WO2023185792A1 - 一种控制阀及其制造方法 - Google Patents

一种控制阀及其制造方法 Download PDF

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Publication number
WO2023185792A1
WO2023185792A1 PCT/CN2023/084264 CN2023084264W WO2023185792A1 WO 2023185792 A1 WO2023185792 A1 WO 2023185792A1 CN 2023084264 W CN2023084264 W CN 2023084264W WO 2023185792 A1 WO2023185792 A1 WO 2023185792A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
valve seat
base
connecting part
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/084264
Other languages
English (en)
French (fr)
Other versions
WO2023185792A9 (zh
Inventor
王太兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanhua Commercial Refrigeration Controls Co Ltd
Original Assignee
Zhejiang Sanhua Commercial Refrigeration Controls Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202210704038.1A external-priority patent/CN116921995A/zh
Priority claimed from CN202221573072.1U external-priority patent/CN217784267U/zh
Application filed by Zhejiang Sanhua Commercial Refrigeration Controls Co Ltd filed Critical Zhejiang Sanhua Commercial Refrigeration Controls Co Ltd
Priority to US18/852,486 priority Critical patent/US20250224039A1/en
Priority to JP2024557120A priority patent/JP7842242B2/ja
Priority to KR1020247036339A priority patent/KR20240167915A/ko
Priority to EP23778157.0A priority patent/EP4502437A4/en
Publication of WO2023185792A1 publication Critical patent/WO2023185792A1/zh
Anticipated expiration legal-status Critical
Publication of WO2023185792A9 publication Critical patent/WO2023185792A9/zh
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/10—Welded housings
    • F16K27/107—Welded housings for taps or cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • F16K5/0689—Packings between housing and plug
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings

Definitions

  • the utility model relates to the technical field of fluid control, and in particular to a method for manufacturing a control valve machine.
  • Figure 1 shows a schematic cross-sectional view of a ball valve in the background technology.
  • the ball valve includes a valve body pipe 01, a left valve body 02, a right valve body 03, a left connecting pipe 04, a right connecting pipe 05, a valve stem 06 and a valve core 07.
  • the valve body pipe 01 is connected with the left valve body 02 and the right valve body 03.
  • Valve body 03 is welded and fixed.
  • the valve stem 06 cooperates with the keyway of the valve core 07, and the valve stem 06 can drive the valve core 07 to rotate circumferentially.
  • the left valve body 02 is machined with a left mounting slot 021
  • the right valve body 03 is machined with a right mounting slot 031
  • the left nozzle 04 is position welded to the left mounting slot 021
  • the right nozzle 05 is position welded to the right mounting slot 031.
  • the valve body structure is relatively complex and inconvenient to process.
  • the matching positions of the left valve body 02, the right valve body 03 and the valve body pipe 01 are related to the pre-tightening force of the left valve body 02, the right valve body 03 on the valve core 07, which will affect the valve stem 06 on the valve. Rotational torque of core 07.
  • the purpose of this application is to provide a control valve, including a housing, a first valve seat and a first pipe.
  • the first valve seat is formed by stamping or stretching metal materials.
  • the first valve seat includes a first base, The first connection part and the second connection part, the first base part is annular, the first connection part is tubular, the first connection part is from the outer edge of the first base towards the housing side extension, the second company
  • the connecting portion is tubular, the second connecting portion extends from the inner edge of the first base portion toward the first connecting portion, the housing is fixedly connected to the first connecting portion, and the first connecting portion is fixedly connected to the first connecting portion.
  • the second connecting part is fixedly connected.
  • the control valve provided by this application includes a shell, a first valve seat and a first nozzle.
  • the first valve seat is formed by stamping or stretching a metal material and includes a first connecting part and a second connecting part.
  • the shell and the first connecting part are The connecting part is fixedly connected, and the first pipe and the second connecting part are fixedly connected.
  • the first valve seat of the present application has a simple structure.
  • the object of the present invention is to provide a manufacturing method of a control valve, which includes:
  • the shell, the first valve seat, and the second valve seat are respectively processed using steel materials.
  • the first valve seat includes a first base, a first connecting portion, and a second connecting portion.
  • the first base is annular, and the The first connecting part is tubular, the second connecting part is tubular, the first connecting part and the second connecting part are located on different sides of the first base part, the inner diameter of the first connecting part is larger than the The outer diameter of the second connecting part is large;
  • the second valve seat includes a second base, a third connecting part and a fourth connecting part, the second base is annular, and the third connecting part is tubular,
  • the fourth connecting part is tubular, the third connecting part and the fourth connecting part are located on different sides of the second base part, and the inner diameter of the third connecting part is larger than the outer diameter of the fourth connecting part. Large diameter;
  • first valve seat takeover assembly weld and fix the first connection part to the first takeover; assemble the second valve seat takeover assembly: connect the third connection part to the The second nozzle is welded and fixed;
  • the first connecting part and the first pipe are welded and fixed to form the first valve seat pipe assembly
  • the third connection part and the second pipe are welded and fixed to be the second valve seat pipe assembly, and assembled Shell, first valve seat take-over assembly, second valve seat take-over assembly.
  • Figure 1 A schematic cross-sectional view of a control valve in the background technology
  • Figure 2 A schematic cross-sectional view of a control valve provided by the utility model
  • Figure 3A A partial enlarged schematic diagram of I1 in Figure 2;
  • Figure 3B Partial enlargement of I2 in Figure 2;
  • Figure 4 A perspective view of the first valve seat in Figure 2;
  • Figure 5 A perspective view of the second valve seat in Figure 2;
  • FIG. 6 Assembly diagram of valve seat takeover assembly A
  • Figure 7 Assembly diagram of the first assembly D
  • Figure 8 Schematic diagram of the assembly of the stop ring, joint and housing
  • Figure 9 Assembly diagram of the third assembly C
  • Figure 10 Schematic cross-sectional view of the third assembly C
  • Figure 11 Schematic diagram of the assembly of the third assembly part C, the first assembly part D, and the second assembly part E.
  • Figure 2- Figure 2- Figure 11 1-shell, 10-valve chamber; 11-body part, 110-inner cavity of the body part; 12-protruding part, 120-inner cavity of protruding part; 2-the first valve seat, 21-the first base, 211-the outer wall of the first base; 22-first connecting part, 23-second connecting part; 231-convex part, 24-inner step part; 20-groove; 2'-the second valve seat, 21'-the second base, 211'-the outer wall of the second base; 22'-the third connection part, 23'-the fourth connection part; 3-joint, 30-through hole; 31-upper step part, 32-lower step part; 33-outer step portion, 331-step surface of the outer step portion; 332-step wall of the outer step part, 34-external thread part; 4-First takeover, 41-First cooperation section; 4'-Second takeover, 41'-Second matching section; 5-valve stem, 51-cylindrical part; 52-the first key
  • Figure 2 is a schematic cross-sectional view of a control valve provided by the present utility model
  • Figure 3A is a partially enlarged schematic view of I1 in Figure 2
  • Figure 4 is a first valve seat in Figure 2 three-dimensional view.
  • the control valve includes a housing 1, a first valve seat 2, a joint 3, a first connecting pipe 4, and a valve stem 5.
  • the first valve seat 2 is formed by stamping or stretching a metal material.
  • the first valve seat 2 is specifically made by stamping or stretching a metal sheet.
  • the first valve seat 2 includes a first base 21 , a first connecting part 22 and a second connection
  • the first base portion 21 is annular
  • the first connecting portion 22 is tubular
  • the first connecting portion 22 extends from the outer edge of the first base 21 toward the housing 1 side
  • the second connecting portion 23 is tubular
  • the first connecting portion 22 is formed in a tubular shape.
  • the two connecting parts 23 extend from the inner edge of the first base part 21 toward the first pipe 4 side, that is, the first connecting part 23 extends from the inner edge of the first base part 21 toward the first pipe 4 side.
  • the connecting portion 22 and the second connecting portion 23 are located on different sides of the first base portion 21 .
  • the first connecting part 22 and the second connecting part 23 are coaxially arranged, that is, the central axis of the first connecting part 22 coincides with the central axis of the second connecting part 23, and the inner diameter of the first connecting part 22 is larger than that of the second connecting part 22.
  • the outer diameter of the portion 23 is large.
  • the housing 1 and the first connecting part 22 are connected by welding or screwing, and the first pipe 4 and the second connecting part 23 are connected by welding or screwing. Specifically, the housing 1 and the first connection part 22 are fixed by laser welding, and the first pipe 4 and the second connection part 23 are fixed by furnace welding.
  • the first valve seat 2 is made by stamping or drawing a metal plate.
  • the first valve seat 2 includes a first connecting part 22 and a second connecting part 23 .
  • the housing 1 is fixedly connected to the first connecting part 22
  • the first connecting part 4 is fixedly connected to the second connecting part 23 .
  • the valve seat of this embodiment has a simple structure, does not require lathe processing, and is easy to process.
  • the control valve also includes a valve core 6 and a first sealing gasket 7 .
  • the valve core 6 is generally spherical and is located in the valve chamber 10 of the control valve.
  • the first valve seat 2 includes an inner step portion 24 with a step surface facing the valve core 6 side.
  • the inner step portion 24 is composed of a first base portion 21 and a first connecting portion 22 .
  • the first sealing gasket 7 is placed on the inner step portion 24 , and the first sealing gasket 7 is against the valve core 6 to support the valve core 6 .
  • the inner stepped portion 24 formed by stamping or stretching of the first valve seat 2 supports the first sealing gasket 7 and the valve core 6, and has a simple structure.
  • the inner step portion 24 has a groove 20, which is located at the connection point between the first base portion 21 and the first connecting portion 22 and is formed by stamping.
  • the groove 20 serves as a clear corner, so that the first sealing gasket 7 can reliably cooperate with the first valve seat 2, thereby improving the matching accuracy between the two.
  • the first sealing gasket 7 includes a chamfered portion 71 , the chamfered surface of the chamfered portion 71 faces the connection between the first base portion 21 and the first connecting portion 22 , and the chamfered portion 71 can also make the first sealing gasket 7 reliably cooperates with the first valve seat 2.
  • the first sealing gasket 7 also includes a first receiving groove 70 with an opening facing the first base 21 .
  • the control valve also includes a first sealing ring 9, which is made of rubber material and has elasticity.
  • the first sealing ring 9 is located in the first accommodating groove 70, and the first sealing ring 9 abuts against the groove wall forming the first accommodating groove 70.
  • the first sealing ring 9 abuts against the above-mentioned first base 21, that is, the first sealing ring 9 elastically abuts against the first base 21. It is connected between the groove wall of the first receiving groove 70 and the first base 21 .
  • the first pipe 4 includes a first fitting section 41 , and the first fitting section 41 is sleeved on the second connecting part 23 .
  • the second connecting part 23 includes a convex part 231 formed by a wire drawing process, and the convex part 231 is located on the outer peripheral surface of the second connecting part 23 .
  • the first matching section 41 is matched with the convex portion 231 and then welded and fixed. By providing the convex portion 231, it is convenient for the solder to pass through the convex portion 231 during soldering. It flows between the first mating section 41 and the second connecting part 23 to improve the welding reliability of the first pipe 4 and the first valve seat 2 .
  • the housing 1 is stamped or stretched from stainless steel pipes, and includes a body part 11 and a protruding part 12.
  • the protruding part 12 protrudes from the circumferential outer wall of the body part 11.
  • the body part 11 is cylindrical, and the protruding part 12 is annular. shape, the first connecting part 22 is at least partially located in the inner cavity 110 of the main body part, the outer peripheral wall of the first connecting part 22 has a clearance fit with the inner wall of the housing 1, and the main part 11 and the first connecting part 22 are welded and fixed.
  • the joint 3 includes an outer step portion 33 with a step surface facing downward (toward the valve core 3 ).
  • the protruding portion 12 is in contact with the step surface of the outer step portion 33 .
  • the step wall of the outer step portion 33 is located in the inner cavity 120 of the protruding portion. , the protruding portion 12 and the outer step portion 33 are welded and fixed. By providing the outer step portion 33 on the joint 3, the protruding portion 12 contacts the step surface of the outer step portion 33 for positioning, which improves the positioning accuracy of the joint 3 and the housing 1 and facilitates welding between the two.
  • the joint 3 is roughly in the shape of a ring and is formed by turning stainless steel profiles.
  • the joint 3 includes a through hole 30, and the valve stem 5 passes through the through hole 30.
  • the lower section of the valve stem 5 extends into the valve chamber 10 of the control valve and is connected with the keyway of the valve core 6.
  • the valve stem 5 can drive the valve core 6 to rotate to open and close. Control valve or regulate the flow of a control valve.
  • the joint 3 includes an integrally formed lower step portion 32
  • the valve stem 5 includes a valve stem step portion 54 with the step facing upward.
  • the valve stem step portion 54 can offset the lower step portion 32 to limit the direction of the valve stem 5 . Control the longitudinal upward movement of the valve.
  • the valve stem 5 has a flip-chip structure, and the integrally formed lower step portion 32 reliably limits the position of the valve stem 5; moreover, the lower step portion 32 is provided on the joint 3, and the valve stem 5 does not need to have an outwardly protruding protrusion.
  • the edge portion can realize reliable position limiting, which can reduce the material cost of the valve stem 5 .
  • the shell 1, the first valve seat 2 and the first nozzle 4 are made of stainless steel.
  • the shell 1 and the joint 3 are fixed by laser welding, and the first valve seat 2 and the first nozzle 4 are first welded in the furnace. It is fixed into components, and then the first valve seat 2 is fixed with the shell 1 through laser welding.
  • Figure 5 is a perspective view of the second valve seat in Figure 2.
  • the control valve also includes a second valve seat 2', a second pipe 4' and a second sealing gasket 7'.
  • the second valve seat 2 ′ has the same structure as the first valve seat 2 , is made of a metal plate by stamping or drawing, and is arranged symmetrically with respect to the central axis of the protruding portion 12 of the housing 1 .
  • the second valve seat 2' includes a second base part 21', a third connecting part 22' and a fourth connecting part 23'.
  • the second base part 21' is annular
  • the third connecting part 22' is tubular
  • the third connecting part 22' is tubular.
  • the connecting part 22' is from the second base part 21'
  • the outer edge portion extends toward the housing 1 side
  • the fourth connecting portion 23' is tubular
  • the fourth connecting portion 23' extends from the inner edge portion of the second base portion 21' toward the second pipe 4' side.
  • the housing 1 is connected to the third connecting part 22' by welding or screwing
  • the second pipe 4' is connected to the fourth connecting part 23' by welding or screwing.
  • the second joint 4' includes a second fitting section 41', which is sheathed on the fourth connecting part 23'.
  • the second fitting section 41' and the fourth connecting part 23' are welded and fixed.
  • the second sealing gasket 7′ has the same structure as the first sealing gasket 7 and is arranged symmetrically with respect to the central axis of the protruding portion 12.
  • the valve core 6 is located between the first sealing gasket 7 and the second sealing gasket 7', the second valve seat 2' supports the second sealing gasket 7', and the second sealing gasket 7' supports the valve core 6.
  • the present invention also provides a method for manufacturing a control valve. Please refer to Figures 2 and 3A, and to Figures 3B, 6 to 11.
  • Figure 3B is a partially enlarged schematic view of I2 in Figure 2;
  • Figure 6 is a valve
  • Figure 7 is the assembly schematic diagram of the first assembly D;
  • Figure 8 is the assembly schematic diagram of the stopper, the joint and the housing;
  • Figure 9 is the assembly schematic diagram of the third assembly C;
  • Figure 10 is the assembly diagram of the third assembly C.
  • Figure 11 is a schematic assembly view of the third assembly C, the first assembly D, and the second assembly E.
  • the shell 1 is prepared by processing steel.
  • the shell 1 includes a body part 11 and a protruding part 12.
  • the stainless steel pipe is first cut into a shell blank, and then the shell blank is punched and flanged to form the protruding part 12.
  • it can also be made from stainless steel plates.
  • the stainless steel plates need to be rolled into tubes first, and the subsequent processes are the same as those for pipes.
  • the first valve seat 2, the second valve seat 2', the first pipe 4 and the second pipe 4' are processed using steel.
  • the first valve seat 2 and the second valve seat 2' are made of stamped stainless steel plates and have the same structure. Specifically, a "Z"-shaped structure is punched out of the stainless steel plate as the first valve seat 2.
  • the first valve seat 2 It includes a first base part 21, a first connecting part 22 and a second connecting part 23.
  • the first base part 21 is annular and the first connecting part 22 is tubular.
  • the first connecting part 22 is from the outer edge of the first base part 21 to one side.
  • the second connecting part 23 is tubular, and the second connecting part 23 extends from the inner edge of the first base part 21 to the other side, that is, the first connecting part 22 and the second connecting part 23 are located on different sides of the first base part 21 , the inner diameter of the first connecting part 22 is larger than the outer diameter of the second connecting part 23 , and the first base part 21 and the first connecting part 22 form an inner step part 24 .
  • the second base part 21' is annular
  • the third connecting part 22' is tubular
  • the third connecting part 22' extends from the second base 21 ' extends toward one side
  • the fourth connecting portion 23' is tubular
  • the fourth connecting portion 23' extends from the inner edge of the second base portion 21' toward the other side, that is, the third connecting portion 22' and the fourth connecting portion 23' extend toward one side.
  • the connecting portions 23' are located on different sides of the second base portion 21', and the inner diameter of the third connecting portion 22' is larger than the outer diameter of the fourth connecting portion 23'.
  • the first valve seat 2 and the second valve seat 2' do not need to be machined after stamping, which can reduce the processing cost of the first valve seat 2 and the second valve seat 2'.
  • the first nozzle 4 and the second nozzle 4' are specifically made of stainless steel pipes.
  • One end of the first nozzle 4 is formed into a first matching section 41 through an expansion process.
  • the other end of the first pipe 4 is used to weld the copper bushing.
  • the copper bushing can be coated or embedded in the other end of the first pipe 4 .
  • the structure of the second nozzle 4' is the same as that of the first nozzle 4 and will not be described again.
  • a first sealing gasket 7 and a second sealing gasket 7' are provided, and the first sealing gasket 7 and the second sealing gasket 7' are made of materials such as PTFE, PEK, and high-temperature nylon.
  • the joint 3 is prepared using steel processing, and the joint 3 is specifically made of stainless steel profile turning.
  • the joint 3 is generally in the shape of a hollow cylinder and includes a through hole 30 .
  • the joint 3 includes an upper step portion 31 with a step surface facing upward, a lower step portion 32 with a step surface facing downward, and an outer step portion 33 located on its outer periphery with a step surface facing downward.
  • the outer step portion 33 is located at the lower section of the joint 3.
  • An external thread portion 33 is processed on the outer peripheral wall of the upper section.
  • a stop ring 8 is provided.
  • the stop ring 8 is stamped from a stainless steel plate and includes a fitting hole 80 .
  • the valve stem 5 is prepared by processing steel.
  • the valve stem 5 is in the shape of a rod and is specifically made by turning a stainless steel bar.
  • the extending direction of the first base portion 21 is consistent with the longitudinal direction of the valve stem 5, and the extending direction of the second base portion 21' is consistent with the longitudinal direction of the valve stem 5.
  • the valve stem 5 includes a cylindrical portion 51 , a first key portion 52 and a second key portion 53 .
  • the first key portion 52 is located on the upper side of the cylindrical portion 51
  • the second key portion 53 is located on the lower side of the cylindrical portion 51 .
  • the cylindrical portion 51 includes a valve stem stepped portion 54 with a stepped surface facing upward.
  • the valve cap 100 is prepared by processing steel.
  • the valve cap 100 is specifically made of stainless steel.
  • the inner peripheral wall of the valve cap 100 is machined with an internal thread portion 101 .
  • the first valve seat 2, the first nozzle 4 and the first copper bushing 200 are fixedly connected by brazing in the furnace to form the first valve seat nozzle assembly A. Specifically, at least part of the first connection portion 22 of the first valve seat 2 Extending into the first matching section 41 of the first pipe 4, the first copper bushing 200 is coated or embedded in the other end of the first pipe 4, and the three are fixed by brazing in the furnace.
  • the second valve seat 2', the second pipe 4' and the second copper bushing 200' are fixedly connected by brazing in the furnace to form the second valve seat pipe assembly B.
  • the third connecting portion 22' of the second valve seat 2' at least partially extends into the second matching section 41' of the second pipe 4', and the second copper bushing 200' is coated or embedded in the second pipe 4 'The other end, the three are fixed by brazing in the furnace.
  • the first valve seat 2 and the second valve seat 2' have the same structure
  • the first pipe 4 and the second pipe 4' have the same structure
  • the first copper bushing 200 and the second copper bushing 200' have the same structure. , therefore, the first valve seat take-over assembly A and the second valve seat take-over assembly B can be interchanged.
  • valve stem 5 Assemble the valve stem 5. Specifically, install the valve stem 5 from one side of the open end of the housing 1 so that the valve stem 5 penetrates the through hole 30 of the joint 3 and allows the valve stem step portion 54 to connect with the lower step of the joint 3. The parts 32 are against each other to restrict the valve stem 5 from protruding longitudinally upward. And the first key portion 52 extends out of the joint 3 to facilitate the rotation of an external tool wrench or the like.
  • a valve core 6 is provided, and the valve core 6 is made of stainless steel material.
  • the valve core 6 is made of stainless steel material.
  • first screw the valve stem 5 until the extension direction of the second key portion 53 is consistent with the axis direction of the body portion 11, and then install the valve core 6 from one side of the open end of the housing 1 , so that the second key portion 53 is embedded in the groove 60 of the valve core 6 to form the third assembly C, that is, the third assembly C includes the housing 1, the joint 3, the stop ring 8, the valve stem 5 and the valve core 6 .
  • this solution facilitates the control of the matching position accuracy of the first valve seat, the second valve seat and the shell during the welding process, so that the valve core is subject to the pre-tightening force of the first valve seat and the second valve seat. Therefore, the consistency of the rotational torque of the valve stem to the valve core can be improved.
  • control valve also includes a first sealing ring 9 and a second sealing ring 9'.
  • the first sealing ring 9 and the second sealing ring 9' are made of rubber material.
  • the first sealing gasket 7 is provided with a first receiving groove 70.
  • the opening of the first receiving groove 70 faces the first base 21, and the second connecting part of the first valve seat 2 23 before welding to the housing 1, place the first sealing ring 9 in the first receiving groove 70 and assemble it as an assembly with the first valve seat takeover assembly A to form the first assembly D.
  • the first sealing gasket 7 is placed on the inner step portion 24 of the first valve seat 2 so that the outer peripheral wall of the first sealing gasket 7 closely matches the inner peripheral wall of the second connecting portion 23 .
  • the second sealing gasket 7' has the same structure as the first sealing gasket 7.
  • the second sealing gasket 7' is provided with a second receiving groove 70', and the fourth connecting portion 23' of the second valve seat 2' is connected to the shell. 1
  • the specific assembly method is the same as the first assembly D.
  • the joint 3 of the third assembly part C is first positioned by tooling, and clamped using a synchronous actuating mechanism (such as a servo machine, etc.)
  • a synchronous actuating mechanism such as a servo machine, etc.
  • the first assembly D uses the outer wall 211 of the first base 21 of the first valve seat 2 as a positioning surface for clamping.
  • the second assembly D uses the second valve seat 2'
  • the outer wall 211' of the second base 21' is used as a positioning surface for clamping.
  • the first assembly D and the second assembly E are simultaneously moved toward the valve core 6 by a preset distance.
  • the first valve seat 2 partially extends into the inner cavity 110 of the main body, and the first sealing gasket 7 resists the valve core 6 , so that the second valve seat 2' partially extends into the inner cavity 110 of the main body, so that the second sealing gasket 7 'Offset with valve core 6 to achieve pre-positioning.
  • the first valve seat 2 is fixedly connected to the housing 1 through laser welding
  • the second valve seat 2' is fixedly connected to the housing 1 through laser welding. It is conceivable that the first valve seat 2 and the second valve seat 2' can also be laser welded to the housing 1 at the same time. In this way, the assembly accuracy of the control valve can be improved, the consistency of the rotational torque of the valve stem to the valve core can be improved, and the internal leakage performance of the control valve can also be improved.
  • housing 1 and the first valve seat 2 and the second valve seat 2' can also be fixed by welding methods such as argon arc welding and gas shielded welding.
  • the bonnet 100 is screwed into the joint 3 to form a control valve, and the bonnet 100 is fixedly connected to the joint 3 by screwing the external thread part 34 with the internal thread part 101 .
  • the first connecting portion 22 is formed into a convex portion 231 through a wire drawing process, and the first matching section 41 is matched and welded to the convex portion 231 .
  • the convex portion 231 in this solution facilitates the flow of solder.
  • the welding reliability of the first valve seat 2 and the first pipe 4 can be improved.
  • connection structure between the second valve seat 2' and the second pipe 4' can also be the connection structure between the first valve seat 2 and the first pipe 4, which also has corresponding technical effects and will not be described again here.
  • the first sealing gasket 7 includes a chamfered portion 71 , and the chamfered portion 71 faces the connection between the first base portion 21 and the second connecting portion 23 , so as to avoid the first base portion 21
  • the R angle at the connection point with the second connecting part 23 ensures the reliability of the cooperation between the first valve seat 2 and the first sealing gasket 7 .
  • the groove 20 is formed on the first valve seat 2 by stamping.
  • the groove 20 is located at the connection between the first base 21 and the second connecting part 23, which can also ensure reliable cooperation between the first valve seat 2 and the first sealing gasket 7. sex.
  • the matching structure of the second valve seat 2' and the second sealing gasket 7' can also be the matching structure of the first valve seat 2 and the first sealing gasket 7, which also has corresponding technical effects and will not be discussed here. Repeat.
  • each component is basically made of stainless steel, which meets the requirements of today's society for controlling the lead content of products; the three components of the first copper bushing, the first pipe and the first valve seat are once
  • the fixed welding method is simple and easy to process; the connection is fixed through furnace brazing and laser welding, without pickling, and the production process is clean and environmentally friendly.

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Abstract

一种控制阀及其制造方法，该控制阀包括壳体（1）、第一阀座（2）和第一接管（4），通过金属材料冲压或拉伸形成第一阀座（2），所述第一阀座（2）包括第一基部（21）、第一连接部（22）和第二连接部（23），所述第一基部（21）呈环状，所述第一连接部（22）呈管状，所述第一连接部（22）自所述第一基部（21）的外缘部朝所述壳体（1）侧延伸，所述第二连接部（23）呈管状，所述第二连接部（23）自所述第一基部（21）的内缘部朝所述第一接管（4）侧延伸，所述壳体（1）与所述第一连接部（22）固定连接，所述第一接管（4）与所述第二连接部（23）固定连接。该控制阀在焊接过程中，便于控制阀座与壳体（1）的配合位置。

Description

一种控制阀及其制造方法
本申请要求于2022年03月31日提交中国专利局、申请号为202210333693.0、发明名称为“一种控制阀的制造方法”和申请号为202220733494.4、发明名称为“一种控制阀”以及2022年06月21日提交中国专利局、申请号为202210704038.1、发明名称为“一种控制阀的制造方法”和申请号为202221573072.1、发明名称为“一种控制阀”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本实用新型涉及流体控制技术领域，具体涉及一种控制阀机器制造方法。
背景技术
图1所示为背景技术一种球阀的剖面示意图。如图1所示，球阀包括阀体管01、左阀体02、右阀体03、左接管04、右接管05、阀杆06和阀芯07，阀体管01与左阀体02、右阀体03焊接固定。阀杆06与阀芯07键槽配合，阀杆06能够带动阀芯07周向转动。
该结构中，在左阀体02车加工有左安装槽021，右阀体03车加工有右安装槽031，左接管04与左安装槽021定位焊接，右接管05与右安装槽031定位焊接。该阀体结构较为复杂，加工不便。
另外，该结构中，左阀体02、右阀体03与阀体管01的配合位置关系到左阀体02、右阀体03对阀芯07的预紧力，会影响阀杆06对阀芯07的旋转扭矩。
发明内容
本申请的目的是提供一种控制阀，包括壳体、第一阀座和第一接管，通过金属材料冲压或拉伸形成所述第一阀座，所述第一阀座包括第一基部、第一连接部和第二连接部，所述第一基部呈环状，所述第一连接部呈管状，所述第一连接部自所述第一基部的外缘部朝所述壳体侧延伸，所述第二连 接部呈管状，所述第二连接部自所述第一基部的内缘部朝所述第一接管侧延伸，所述壳体与所述第一连接部固定连接，所述第一接管与所述第二连接部固定连接。
本申请所提供的控制阀，包括壳体、第一阀座和第一接管，通过金属材料冲压或拉伸形成第一阀座，包括第一连接部和第二连接部，壳体与第一连接部固定连接，第一接管与第二连接部固定连接。相对于背景技术，本申请的第一阀座结构简单。
本发明的目的是提供一种控制阀的制造方法，包括：
使用钢材分别加工制备壳体、第一阀座、第二阀座，所述第一阀座包括第一基部、第一连接部和第二连接部，所述第一基部呈环状，所述第一连接部呈管状，所述第二连接部呈管状，所述第一连接部、所述第二连接部位于所述第一基部的不同侧，所述第一连接部的内径尺寸比所述第二连接部的外径尺寸大；所述第二阀座包括第二基部、第三连接部和第四连接部，所述第二基部呈环状，所述第三连接部呈管状，所述第四连接部呈管状，所述第三连接部、所述第四连接部位于所述第二基部的不同侧，所述第三连接部的内径尺寸比所述第四连接部的外径尺寸大；
提供第一接管和第二接管，组装第一阀座接管组件：将所述第一连接部与所述第一接管焊接固定；组装第二阀座接管组件：将所述第三连接部与所述第二接管焊接固定；
组装所述壳体、所述第一阀座接管组件、所述第二阀座接管组件：将所述第二连接部与所述壳体焊接固定；将所述第四连接部与所述壳体焊接固定。
本发明所提供的控制阀的制造方法，将第一连接部与第一接管焊接固定作为第一阀座接管组件，将第三连接部与第二接管焊接固定作为第二阀座接管组件，组装壳体、第一阀座接管组件、第二阀座接管。本方案在焊接过程中，便于控制第一阀座、第二阀座与壳体的配合位置。
附图说明
图1：背景技术一种控制阀的剖面示意图；
图2：本实用新型提供的一种控制阀的剖面示意图；
图3A：图2中I1处的局部放大示意图；
图3B：图2中I2处的局部放大示意图；
图4：图2中第一阀座的立体图；
图5：图2中第二阀座的立体图；
图6：阀座接管组件A的装配示意图；
图7：第一装配件D的装配示意图；
图8：止动圈、接头与壳体的装配示意图；
图9：第三装配件C的装配示意图；
图10：第三装配件C的剖面示意图；
图11：第三装配件C与第一装配件D、第二装配件E的装配示意图。
图2-图11中：
1-壳体、10-阀腔；
11-本体部、110-本体部的内腔；
12-凸出部、120-凸出部的内腔；
2-第一阀座、21-第一基部、211-第一基部的外壁；
22-第一连接部、23-第二连接部；
231-凸纹部、24-内台阶部；
20-凹槽；
2’-第二阀座、21’-第二基部、211’-第二基部的外壁；
22’-第三连接部、23’-第四连接部；
3-接头、30-贯通孔；
31-上台阶部、32-下台阶部；
33-外台阶部、331-外台阶部的台阶面；
332-外台阶部的台阶壁、34-外螺纹部；
4-第一接管、41-第一配合段；
4’-第二接管、41’-第二配合段；
5-阀杆、51-圆柱部；
52-第一键部、53-第二键部；
54-阀杆台阶部；
6-阀芯、60-槽；
7-第一密封垫；
70-第一容纳槽、71-倒角部；
7’-第二密封垫、70’-第二容纳槽；
8-止动圈、80-配合孔；
9-第一密封圈、9’-第二密封圈；
100-阀帽、101-内螺纹部；
200-第一铜衬套、200’-第二铜衬套；
A-第一阀座接管组件、B-第二阀座接管组件、C-第三装配件；
D-第一装配件、E-第二装配件。
具体实施方式
为了使本技术领域的人员更好地理解本实用新型方案，下面结合附图和具体实施方式对本实用新型作进一步的详细说明。
这里需要说明的是，本文中所涉及的上和下等方位词是以图2中零部件位于图中及零部件相互之间的位置来定义的，只是为了表达技术方案的清楚及方便。应当理解，本文所采用的方位词不应限制本申请请求保护的范围。
请参考图2、图3A和图4，图2为本实用新型提供的一种控制阀的剖面示意图；图3A为图2中I1处的局部放大示意图；图4为图2中第一阀座的立体图。
如图所示，控制阀包括壳体1、第一阀座2、接头3、第一接管4、阀杆5。通过金属材料冲压或拉伸形成第一阀座2，第一阀座2具体通过金属板材冲压或拉伸制成，第一阀座2包括第一基部21、第一连接部22和第二连接部23，第一基部21呈环状，第一连接部22呈管状，第一连接部22自第一基部21的外缘部朝壳体1侧延伸形成，第二连接部23呈管状，第二连接部23自第一基部21的内缘部朝第一接管4侧延伸形成，即第一连 接部22与第二连接部23位于第一基部21的不同侧。进一步的，第一连接部22与第二连接部23同轴设置，即第一连接部22的中心轴线与第二连接部23的中心轴线重合，第一连接部22的内径尺寸比第二连接部23的外径尺寸大。壳体1与第一连接部22通过焊接或螺纹固定连接，第一接管4与第二连接部23通过焊接或螺纹固定连接。具体的，壳体1与第一连接部22通过激光焊固定，第一接管4与第二连接部23通过炉中焊固定。
本实施方案，第一阀座2通过金属板材冲压或拉伸制成。第一阀座2包括第一连接部22和第二连接部23，壳体1与第一连接部22固定连接，第一接管4与第二连接部23固定连接。相较于背景技术，本实施方案的阀座结构简单，无需车加工，加工方便。
控制阀还包括阀芯6和第一密封垫7。阀芯6大致呈球状，位于控制阀的阀腔10。第一阀座2包括台阶面朝向阀芯6侧的内台阶部24，该内台阶部24由第一基部21与第一连接部22构成。第一密封垫7置于该内台阶部24上，第一密封垫7与阀芯6相抵以支撑阀芯6。第一阀座2通过冲压或拉伸形成的内台阶部24对第一密封垫7、阀芯6起支撑作用，结构简单。
作为进一步的实施例，内台阶部24具有凹槽20，该凹槽20位于第一基部21与第一连接部22的相连处，通过冲压形成。该凹槽20作为清角，使得第一密封垫7能够与第一阀座2可靠配合，提高了两者的配合精度。和/或，第一密封垫7包括倒角部71，倒角部71的倒角面朝向第一基部21与第一连接部22的相连处，设置倒角部71也能够使得第一密封垫7与第一阀座2可靠配合。
第一密封垫7还包括第一容纳槽70，该第一容纳槽70的开口朝向第一基部21。控制阀还包括第一密封圈9，该第一密封圈9由橡胶材料制成，具有弹性。第一密封圈9位于第一容纳槽70，第一密封圈9与形成第一容纳槽70的槽壁相抵，第一密封圈9与上述第一基部21相抵，即第一密封圈9弹性抵接于第一容纳槽70的槽壁与第一基部21之间。
进一步的，第一接管4包括第一配合段41，第一配合段41外套于第二连接部23。第二连接部23包括凸纹部231，凸纹部231通过拉丝工艺形成，凸纹部231位于第二连接部23的外周面。第一配合段41与凸纹部231配合后焊接固定。通过设置凸纹部231，便于焊接时焊料通过凸纹部231 流入第一配合段41与第二连接部23之间，提高第一接管4与第一阀座2的焊接可靠性。
壳体1由不锈钢管材冲压或拉伸成型，包括本体部11和凸出部12，凸出部12从本体部11的周向外壁凸出，本体部11呈筒状，凸出部12呈环状，第一连接部22至少部分位于本体部的内腔110，第一连接部22的外周壁与壳体1的内壁间隙配合，本体部11与第一连接部22焊接固定。接头3包括台阶面朝下(朝向阀芯3)的外台阶部33，凸出部12与该外台阶部33的台阶面接触定位，外台阶部33的台阶壁位于凸出部的内腔120，凸出部12与外台阶部33焊接固定。通过在接头3上设置外台阶部33，使得凸出部12与该外台阶部33的台阶面接触实现定位，提高了接头3与壳体1的定位精度，便于两者焊接。
本方案中，接头3大致呈圆环状，通过不锈钢型材车加工成型。接头3包括贯通孔30，阀杆5穿设于贯通孔30，阀杆5的下段伸入控制阀的阀腔10并与阀芯6键槽连接，阀杆5能够带动阀芯6转动以开闭控制阀或调节控制阀的流量。
作为进一步的技术方案，接头3包括一体成形的下台阶部32，阀杆5包括台阶面朝上的阀杆台阶部54，阀杆台阶部54能够与下台阶部32相抵以限制阀杆5沿控制阀的纵向向上移动。本方案中，阀杆5为倒装结构，一体成形的下台阶部32对阀杆5限位可靠；且，下台阶部32设置在接头3上，阀杆5无需设置向外凸出的凸缘部即可实现可靠限位，能够降低阀杆5的材料成本。
壳体1、第一阀座2和第一接管4由不锈钢材料制成，本方案中，壳体1与接头3通过激光焊固定，第一阀座2与第一接管4先通过炉中焊固定成组件，然后第一阀座2再与壳体1通过激光焊固定。
请一并参考图5，图5为图2中第二阀座的立体图。
如图2、图5所示，控制阀还包括第二阀座2’、第二接管4’和第二密封垫7’。第二阀座2’与第一阀座2结构相同，由金属板材通过冲压或拉伸制成，相对于壳体1的凸出部12的中心轴线对称设置。具体的，第二阀座2’包括第二基部21’、第三连接部22’和第四连接部23’，第二基部21’呈环状，第三连接部22’呈管状，第三连接部22’自第二基部21’ 的外缘部朝壳体1侧延伸，第四连接部23’呈管状，第四连接部23’自第二基部21’的内缘部朝第二接管4’侧延伸。壳体1与第三连接部22’通过焊接或螺纹固定连接，第二接管4’与第四连接部23’通过焊接或螺纹固定连接。如此设置，第二阀座2’的结构简单。
第二接管4’包括第二配合段41’，第二配合段41’外套于第四连接部23’，第二配合段41’与第四连接部23’焊接固定。
第二密封垫7’与第一密封垫7结构相同，相对于凸出部12的中心轴线对称设置。阀芯6位于第一密封垫7与第二密封垫7’之间，第二阀座2’支撑第二密封垫7’，第二密封垫7’支撑阀芯6。
本发明还提供一种控制阀的制造方法，请参考图2、图3A，并参考图3B、图6至图11，其中，图3B为图2中I2处的局部放大示意图；图6为阀座接管组件A的装配示意图；图7为第一装配件D的装配示意图；图8为止动圈、接头与壳体的装配示意图；图9为第三装配件C的装配示意图；图10为第三装配件C的剖面示意图；图11为第三装配件C与第一装配件D、第二装配件E的装配示意图。
如图所示，上述控制阀的具体制造过程如下：
使用钢材加工制备壳体1，壳体1包括本体部11和凸出部12，具体先将不锈钢管材切割成壳体毛坯，再将壳体毛坯冲压及翻边出凸出部12。当然也可以通过不锈钢板材制成，先需要将不锈钢板材卷成管状，后面的工序跟管材相同。
使用钢材加工制备第一阀座2、第二阀座2’、第一接管4、第二接管4’。第一阀座2与第二阀座2’由不锈钢板材冲压制成，两者结构相同，具体的，将不锈钢板材冲出“Z”字型结构作为第一阀座2，第一阀座2包括第一基部21、第一连接部22和第二连接部23，第一基部21呈环状，第一连接部22呈管状，第一连接部22自第一基部21的外缘部朝一侧延伸，第二连接部23呈管状，第二连接部23自第一基部21的内缘部朝另一侧延伸，即第一连接部22与第二连接部23位于第一基部21的不同侧，第一连接部22的内径尺寸比第二连接部23的外径尺寸大，第一基部21与第一连接部22构成内台阶部24。
将不锈钢板材冲出“Z”字型结构作为第二阀座2’，第二阀座2’包 括第二基部21’、第三连接部22’和第四连接部23’，第二基部21’呈环状，第三连接部22’呈管状，第三连接部22’自第二基部21’的外缘部朝一侧延伸，第四连接部23’呈管状，第四连接部23’自第二基部21’的内缘部朝另一侧延伸，即第三连接部22’与第四连接部23’位于第二基部21’的不同侧，第三连接部22’的内径尺寸比第四连接部23’的外径尺寸大。
本方案中，第一阀座2与第二阀座2’冲压后无需进行车加工，能够降低第一阀座2与第二阀座2’的加工成本。
第一接管4和第二接管4’具体由不锈钢管材制成，具体的第一接管4的一端通过扩口工艺形成第一配合段41，在实际生产过程中，为了便于与客户的铜接管匹配焊接，第一接管4的另一端用于焊接铜衬套，铜衬套可以外套或内嵌于第一接管4的另一端。第二接管4’与第一接管4结构相同，不再赘述。
提供第一密封垫7和第二密封垫7’，第一密封垫7和第二密封垫7’由PTFE、PEK、高温尼龙等材料加工制成。
使用钢材加工制备接头3，接头3具体由不锈钢型材车加工制成。接头3作为零件时大致呈中空圆柱状，包括贯通孔30。接头3包括台阶面朝上的上台阶部31、台阶面朝下的下台阶部32及位于其外周的台阶面朝下的外台阶部33，外台阶部33位于接头3的下段，接头3的上段外周壁加工有外螺纹部33。提供止动圈8，止动圈8由不锈钢板材冲压制成，包括配合孔80。
使用钢材加工制备阀杆5，阀杆5呈杆状，具体由不锈钢棒料车加工制成。前述第一基部21的延伸方向与阀杆5的长度方向一致，前述第二基部21’的延伸方向与阀杆5的长度方向一致。阀杆5包括圆柱部51、第一键部52和第二键部53，第一键部52位于圆柱部51的上侧，第二键部53位于圆柱部51的下侧。圆柱部51包括台阶面朝上的阀杆台阶部54。
使用钢材加工制备阀帽100，阀帽100具体由不锈钢材料加工制成，阀帽100的内周壁车加工内螺纹部101。
将第一阀座2、第一接管4及第一铜衬套200通过炉中钎焊固定连接作为第一阀座接管组件A，具体的，第一阀座2的第一连接部22至少部分 伸入第一接管4的第一配合段41内，第一铜衬套200外套或内嵌于第一接管4的另一端，三者通过炉中钎焊固定。
将第二阀座2’、第二接管4’及第二铜衬套200’通过炉中钎焊固定连接作为第二阀座接管组件B。具体的，第二阀座2’的第三连接部22’至少部分伸入第二接管4’的第二配合段41’内，第二铜衬套200’外套或内嵌于第二接管4’的另一端，三者通过炉中钎焊固定。需要说明的是，由于第一阀座2与第二阀座2’结构相同，第一接管4与第二接管4’结构相同，第一铜衬套200与第二铜衬套200’结构相同，因此，第一阀座接管组件A与第二阀座接管组件B可以互换。
将接头3的下段部分伸入凸出部的内腔120，使得外台阶部33的台阶面331与凸出部12接触，外台阶部33的台阶壁332位于凸出部的内腔120，并通过激光焊使得接头3与壳体1固定连接；将止动圈8置于接头3的上台阶部31，并通过激光焊使得止动圈8与接头3固定连接。
组装阀杆5，具体的，将阀杆5自壳体1的一侧开口端装入，使得阀杆5贯穿接头3的贯通孔30，并使得阀杆台阶部54能够与接头3的下台阶部32相抵以限制阀杆5纵向向上脱出。且第一键部52伸出接头3，便于外部工具扳手等旋转。
提供阀芯6，阀芯6由不锈钢材料制成。装配阀芯6时，为便于安装，先将阀杆5旋至第二键部53的延伸方向与本体部11的轴线方向一致，再将阀芯6自壳体1的一侧开口端装入，使得第二键部53与阀芯6的槽60相嵌形成第三装配件C，即，第三装配件C包括壳体1、接头3、止动圈8、阀杆5及阀芯6。
组装壳体1、第一阀座接管组件A、第二阀座接管组件B，具体的，将第一阀座2的第二连接部23至少部分伸入壳体1，第二连接部23与壳体1焊接固定；将第二阀座2’的第四连接部23’至少部分伸入壳体1，第四连接部23’与壳体1焊接固定。
相比于背景技术，本方案在焊接过程中，便于控制第一阀座、第二阀座与壳体的配合位置精度，从而使得阀芯受到第一阀座、第二阀座的预紧力一致，因此，能够提高阀杆对阀芯的转动扭矩的一致性。
进一步的，控制阀还包括第一密封圈9和第二密封圈9’，第一密封圈 9与第二密封圈9’由橡胶材料制成，第一密封垫7设有第一容纳槽70，第一容纳槽70的开口朝向第一基部21，第一阀座2的第二连接部23与壳体1焊接前，将第一密封圈9置于第一容纳槽70后作为组件与第一阀座接管组件A装配形成第一装配件D。具体的，将第一密封垫7置于第一阀座2的内台阶部24，使得第一密封垫7的外周壁与第二连接部23的内周壁紧配。
同样的，第二密封垫7’与第一密封垫7的结构相同，第二密封垫7’设有第二容纳槽70’，第二阀座2’的第四连接部23’与壳体1焊接前，将第二密封圈9’置于该第二容纳槽70’后作为组件与第二阀座接管组件B装配形成第二装配件E，使得第二密封垫7’的外周壁与第四连接部23’的内周壁紧配。具体装配方法与第一装配件D相同。
在第一装配件D、第二装配件E、第三装配件C装配过程中，先通过工装对第三装配件C的接头3进行定位，使用同步作动机构(例如伺服机等)装夹第一装配件D、第二装配件E，第一装配件D以第一阀座2的第一基部21的外壁211作为定位面进行装夹，第二装配件D以第二阀座2’的第二基部21’的外壁211’作为定位面进行装夹。装夹后，将第一装配件D与第二装配件E同时朝阀芯6方向移动预设距离。使得第一阀座2部分伸入本体部的内腔110，第一密封垫7与阀芯6相抵，使得第二阀座2’部分伸入本体部的内腔110，使得第二密封垫7’与阀芯6相抵，以实现预定位。预定位后，第一阀座2与壳体1通过激光焊固定连接，第二阀座2’与壳体1通过激光焊固定连接。可以想到的是，第一阀座2、第二阀座2’也可以同时与壳体1进行激光焊。如此，能够提高控制阀的装配精度，能够提高阀杆对阀芯的转动扭矩的一致性，也提高了控制阀的内漏性能。
可以想到的是，壳体1与第一阀座2、第二阀座2’也可以采用氩弧焊、气体保护焊等焊接方式实现固定。
然后，将阀帽100拧入接头3形成控制阀，通过外螺纹部34与内螺纹部101螺合使得阀帽100与接头3固定连接。
作为一种具体的实施设计，如图6所示，制备第一阀座2时，将第一连接部22通过拉丝工艺形成凸纹部231，第一配合段41与凸纹部231配合焊接。如此，相较于上述实施例，本方案中凸纹部231利于焊料流动， 能够提高第一阀座2与第一接管4的焊接可靠性。
可以想到的是，第二阀座2’与第二接管4’的连接结构也可以采用第一阀座2与第一接管4的连接结构，也具有相应的技术效果，在此不再赘述。
进一步的，如图2、图3A所示，第一密封垫7包括倒角部71，倒角部71朝向第一基部21与第二连接部23的相连处，如此能够避开第一基部21与第二连接部23的相连处的R角，保证第一阀座2与第一密封垫7的配合可靠性。
或者，第一阀座2通过冲压形成凹槽20，该凹槽20位于第一基部21与第二连接部23的相连处，也能保证第一阀座2与第一密封垫7的配合可靠性。
可以想到的是，第二阀座2’与第二密封垫7’的配合结构也可以采用第一阀座2与第一密封垫7的配合结构，也具有相应的技术效果，在此不再赘述。
本实施例的控制阀的制造方法，各零部件基本采用不锈钢材料制成，符合当今社会控制产品含铅量的要求；第一铜衬套、第一接管和第一阀座三个零部件一次性焊接方式固定，工序简单，加工方便；通过炉中钎焊、激光焊固定连接，无需酸洗，生产工艺清洁环保。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (20)

  1. 一种控制阀，其特征在于，包括壳体、第一阀座和第一接管，通过金属材料冲压或拉伸形成所述第一阀座，所述第一阀座包括第一基部、第一连接部和第二连接部，所述第一基部呈环状，所述第一连接部呈管状，所述第一连接部自所述第一基部的外缘部朝所述壳体侧延伸，所述第二连接部呈管状，所述第二连接部自所述第一基部的内缘部朝所述第一接管侧延伸，所述壳体与所述第一连接部固定连接，所述第一接管与所述第二连接部固定连接。
  2. 如权利要求1所述的控制阀，其特征在于，所述第一连接部与所述第二连接部同轴设置，所述第一连接部的内径尺寸比所述第二连接部的外径尺寸大。
  3. 如权利要求1所述的控制阀，其特征在于，还包括阀芯和第一密封垫，所述阀芯位于所述控制阀的内腔，所述第一阀座包括台阶面朝向所述阀芯侧的内台阶部，所述内台阶部由所述第一基部与所述第一连接部构成，所述第一密封垫置于所述内台阶部，所述第一密封垫支撑所述阀芯。
  4. 如权利要求3所述的控制阀，其特征在于，所述内台阶部具有凹槽，所述凹槽位于所述第一基部与所述第一连接部的相连处。
  5. 如权利要求3所述的控制阀，其特征在于，所述第一密封垫包括倒角部，所述倒角部的倒角面朝向所述第一基部与所述第一连接部的相连处。
  6. 如权利要求5所述的控制阀，其特征在于，所述第一密封垫还包括第一容纳槽，所述第一容纳槽的开口朝向所述第一基部，所述控制阀还包括第一密封圈，所述第一密封圈位于所述容纳槽，所述第一密封圈与形成所述第一容纳槽的槽壁相抵，所述第一密封圈与所述第一基部相抵。
  7. 如权利要求1所述的控制阀，其特征在于，所述第一接管包括第一配合段，所述第一配合段外套于所述第二连接部，所述第二连接部包括凸纹部，所述凸纹部位于所述第二连接部的外周面，所述第一配合段与所述凸纹部焊接固定。
  8. 如权利要求1-7任一项所述的控制阀，其特征在于，所述壳体包括本体部和凸出部，所述凸出部自所述本体部的周向外壁凸出，所述本体部呈筒状，所述凸出部呈环状，所述本体部与所述第一连接部焊接固定，所 述第一连接部的外周壁与所述壳体的内壁间隙配合，所述控制阀还包括接头，所述接头包括台阶面朝下的外台阶部，所述凸出部与所述外台阶部的台阶面接触，所述外台阶部的台阶壁位于所述凸出部的内腔，所述凸出部与所述外台阶部焊接固定。
  9. 如权利要求8所述的控制阀，其特征在于，还包括阀芯和阀杆，所述接头包括贯通孔，所述阀杆穿设于所述贯通孔，所述阀杆与所述阀芯键槽连接，所述接头包括一体成形的下台阶部，所述阀杆包括台阶面朝上的阀杆台阶部，所述阀杆台阶部能够与所述下台阶部相抵以限制所述阀杆沿所述控制阀的纵向向上移动。
  10. 如权利要求1-7任一项所述的控制阀，其特征在于，所述壳体、所述第一阀座和所述第一接管由不锈钢材料制成，所述第一阀座与所述第一接管通过炉中焊固定，所述壳体与所述第一阀座通过激光焊固定。
  11. 如权利要求1所述的控制阀，其特征在于，还包括第二阀座和第二接管，通过金属板材冲压或拉伸形成所述第二阀座，所述第二阀座包括第二基部、第三连接部和第四连接部，所述第二基部呈环状，所述第三连接部呈管状，所述第三连接部自所述第二基部的外缘部朝所述壳体侧延伸，所述第四连接部呈管状，所述第四连接部自所述第二基部的内缘部朝所述第二接管侧延伸，所述壳体与所述第三连接部焊接固定，所述第二接管包括第二配合段，所述第二配合段外套于所述第四连接部，所述第二配合段与所述第四连接部焊接固定。
  12. 一种控制阀的制造方法，其特征在于，包括：
    使用钢材分别加工制备壳体、第一阀座、第二阀座，所述第一阀座包括第一基部、第一连接部和第二连接部，所述第一基部呈环状，所述第一连接部呈管状，所述第二连接部呈管状，所述第一连接部、所述第二连接部位于所述第一基部的不同侧，所述第一连接部的内径尺寸比所述第二连接部的外径尺寸大；所述第二阀座包括第二基部、第三连接部和第四连接部，所述第二基部呈环状，所述第三连接部呈管状，所述第四连接部呈管状，所述第三连接部、所述第四连接部位于所述第二基部的不同侧，所述第三连接部的内径尺寸比所述第四连接部的外径尺寸大；
    提供第一接管和第二接管，组装第一阀座接管组件：将所述第一连接部与所述第一接管焊接固定；组装第二阀座接管组件：将所述第三连接部与所述第二接管焊接固定；
    组装所述壳体、所述第一阀座接管组件、所述第二阀座接管组件：将所述第二连接部与所述壳体焊接固定；将所述第四连接部与所述壳体焊接固定。
  13. 如权利要求12所述的控制阀的制造方法，其特征在于，提供第一密封垫和第一密封圈，所述第一密封垫设有第一容纳槽，所述第二连接部与所述壳体焊接前，将所述第一密封圈置于所述第一容纳槽，装配所述第一密封垫与所述第一阀座接管组件作为第一装配件，使得所述第一密封垫的外周壁与所述第二连接部的内周壁紧配，将所述第二连接部至少部分伸入所述壳体；
    提供第二密封垫，所述第四连接部与所述壳体焊接前，装配所述第二密封垫与所述第二阀座接管组件，使得所述第二密封垫的外周壁与所述第四连接部的内周壁紧配，将所述第四连接部至少部分伸入所述壳体。
  14. 如权利要求13所述的控制阀的制造方法，其特征在于，提供第二密封圈，所述第二密封垫设有第二容纳槽，将所述第二密封圈置于所述第二容纳槽后，将所述第二密封垫与所述第二阀座接管组件装配形成第二装配件。
  15. 如权利要求13所述的控制阀的制造方法，其特征在于，所述第一密封垫包括倒角部，所述倒角部朝向所述第一基部与所述第二连接部的相连处；
    或，所述第一阀座通过冲压形成凹槽，所述凹槽位于所述第一基部与所述第二连接部的相连处。
  16. 如权利要求12-15任一项所述的控制阀的制造方法，其特征在于，使用钢材加工制备所述壳体，所述壳体包括本体部和凸出部，所述凸出部通过冲压及翻边制成；将所述第二连接部至少部分伸入所述本体部的内腔，所述本体部与所述第二连接部通过激光焊焊接固定。
  17. 如权利要求16所述的控制阀的制造方法，其特征在于，提供止动圈，使用钢材车加工制备接头，所述接头包括台阶面朝上的上台阶部和台 阶面朝下的外台阶部，将所述止动圈置于所述上台阶部，将所述止动圈与所述接头通过激光焊焊接固定；将所述接头部分伸入所述凸出部的内腔，使得所述凸出部与所述外台阶部的台阶面接触，将所述壳体与所述接头通过激光焊焊接固定。
  18. 如权利要求17所述的控制阀的制造方法，其特征在于，使用钢材加工制备阀杆，所述第一基部的延伸方向与所述阀杆的长度方向一致，所述第二基部的延伸方向与所述阀杆的长度方向一致，所述阀杆包括圆柱部、位于所述圆柱部上侧的第一键部和位于所述圆柱部下侧的第二键部，所述第一键部与所述圆柱部构成阀杆台阶部，所述接头还包括台阶面朝下的下台阶部，
    所述第二连接部与所述壳体焊接前或所述第四连接部与所述壳体焊接前，将所述阀杆自所述壳体的一侧开口端装入，使得所述阀杆贯穿所述接头的贯通孔，使得所述阀杆台阶部能够与所述下台阶部相抵；提供阀芯，将所述阀芯自所述壳体的一侧开口端装入，使得所述第二键部与所述阀芯的槽相嵌形成第三装配件。
  19. 如权利要求18所述的控制阀的制造方法，其特征在于，所述第一阀座、所述第二阀座与所述壳体焊接时，通过工装对所述第三装配件的接头进行定位，将所述第一装配件与所述第二装配件通过同步作动机构同时朝所述阀芯方向移动预设距离，使得所述第一阀座部分伸入所述本体部的内腔，所述第一密封垫与所述阀芯相抵，使得所述第二阀座部分伸入所述本体部的内腔，所述第二密封垫与所述阀芯相抵。
  20. 如权利要求19所述的控制阀的制造方法，其特征在于，所述接头的外周壁包括外螺纹部；使用钢材加工制备阀帽，所述阀帽的内周壁包括内螺纹部；将所述阀帽拧入所述接头，所述阀帽与所述接头通过所述内螺纹部与所述外螺纹部螺合固定。
PCT/CN2023/084264 2022-03-31 2023-03-28 一种控制阀及其制造方法 Ceased WO2023185792A1 (zh)

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