CN112013169A - Novel PE body that bonding is prevented to inner wall - Google Patents

Novel PE body that bonding is prevented to inner wall Download PDF

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Publication number
CN112013169A
CN112013169A CN202010993459.1A CN202010993459A CN112013169A CN 112013169 A CN112013169 A CN 112013169A CN 202010993459 A CN202010993459 A CN 202010993459A CN 112013169 A CN112013169 A CN 112013169A
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CN
China
Prior art keywords
pipe
wall
pipeline body
pneumatic
piston cylinder
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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.)
Withdrawn
Application number
CN202010993459.1A
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Chinese (zh)
Inventor
吴寿华
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Individual
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Individual
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Publication date
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Priority to CN202010993459.1A priority Critical patent/CN112013169A/en
Publication of CN112013169A publication Critical patent/CN112013169A/en
Withdrawn legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/12Rigid pipes of plastics with or without reinforcement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04Devices damping pulsations or vibrations in fluids
    • F16L55/045Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/24Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/06Protection of pipes or objects of similar shape against external or internal damage or wear against wear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

The invention discloses a novel PE pipe body with an anti-bonding inner wall, which comprises a pipe body, wherein one end of the pipe body is provided with a control valve, the pipe body is close to the control valve, the water outlet end of the pipe body is provided with a fixed pipe, the surface of the fixed pipe is provided with a pneumatic collecting device, and the pneumatic collecting device is composed of a piston cylinder, a movable rod, a piston sheet and a push plate. This PE body is by the PE inlayer, enhancement layer and top layer are constituteed, the body intensity has been increased, and the oxidation resistance of surface graphite layer is superior, through the pneumatic collection device of fixed pipe with and table, can utilize impact force and the negative pressure that positive water hammer and negative water hammer phenomenon produced, drive the activity of piston piece, thereby pour into the inside of gas holder with the outside air, reach the air of certain atmospheric pressure after the compression, pneumatic motor drives the ring canal and rotates, utilize the clearance pole to wash the inner wall of pipeline body, thereby use manpower sparingly, need not additionally to erect the power supply, buffer water hammer effect simultaneously, the protection pipeline.

Description

Novel PE body that bonding is prevented to inner wall
Technical Field
The invention relates to the technical field of PE pipes, in particular to a novel PE pipe body with an anti-bonding inner wall.
Background
PE is polyethylene plastic, the most basic plastic, plastic bags, preservative films and the like are PE, and HDPE is a nonpolar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white, and the micro-thin section is semitransparent to a certain degree. PE has excellent resistance to most domestic and industrial chemicals.
The application fields of PE pipes are very wide, the following being the main application fields: 1. safe drinking water in rural areas and drinking water pipelines in urban and rural areas; 2. city tap water pipe network system, water service company, water works; 3. the material liquid conveying pipeline for chemical industry, chemical fiber industry, food industry, forestry industry, printing and dyeing industry, pharmacy industry, light industry, papermaking industry, metallurgy industry and other industries.
At present, some pipelines for supplying water, particularly urban and rural water supply pipelines, due to geographical factors, certain trace elements in water exceed the standard, are easy to adhere to the inner wall of a water pipeline, are not cleaned for a long time and are easy to deteriorate, so that the water supply pipeline needs to be cleaned regularly to prevent water quality from being influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a novel PE pipe body with an anti-bonding inner wall.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel PE pipe body with an anti-bonding inner wall comprises a pipe body, wherein a control valve is installed at one end of the pipe body, the pipe body is close to the control valve, a fixed pipe is installed at the water outlet end of the pipe body, a pneumatic collecting device is arranged on the surface of the fixed pipe and consists of a piston cylinder, a movable rod, a piston sheet and a push plate, the piston cylinder is fixedly connected to the surface of the fixed pipe, through holes are formed in the upper surface and the lower surface of the piston cylinder, the top end and the bottom end of the movable rod are installed in the through holes through linear sealing bearings, a reset spring is installed on the surface of the movable rod, which is located in the piston cylinder, the piston sheet is fixedly connected to the surface of the movable rod, is located below the reset spring and has a clearance smaller than 0.5mm with the inner wall of the piston cylinder, and the push plate is fixedly connected to the bottom, two one-way air inlet pipes are installed on the right side of the piston cylinder, and two one-way air outlet pipes are installed on the left side of the piston cylinder.
The middle part of the pipeline body is provided with a rotatable ring pipe through a mounting ring, the inner wall of the mounting ring is fixedly connected with the ring pipe through a waterproof sealing bearing, the upper surface of the pipeline body is provided with a pneumatic motor for driving the ring pipe to rotate, and the output end of the piston cylinder supplies air for the pneumatic motor through an air storage tank; ring canal inner wall fixedly connected with extends to the inside clearance pole of pipeline body, clearance pole and pipeline body's inner wall radian adaptation and laminating.
Preferably, the pipeline body comprises a PE inner layer, a reinforcing layer and a surface layer from inside to outside, the PE inner layer is made of PE plastic, the reinforcing layer is made of a stainless steel aluminum strip, and the surface layer is made of a graphite coating with the thickness of 2 cm.
Preferably, the number of the pneumatic collecting devices is a plurality of, the plurality of pneumatic collecting devices are circumferentially arranged on the surface of the fixed pipe at equal intervals, and the one-way air outlet pipes of the plurality of pneumatic collecting devices are communicated with the air storage tank.
Preferably, the open-close valve is installed at the left output end of the air storage tank, the driving gear is installed at the output shaft of the pneumatic motor, the outer gear ring is arranged on the surface of the ring pipe, and the driving gear is meshed with the outer gear ring.
Preferably, the material of clearance pole is the stainless steel hollow tube, and has seted up a plurality of exports with the one side of pipeline body laminating.
Preferably, a liquid storage box is arranged on the surface of the ring pipe, and the liquid storage box is communicated with the inside of the cleaning rod through a connecting pipe.
The invention has the following beneficial effects:
1. the novel PE pipe body with the anti-bonding inner wall is characterized in that the pipe body is composed of a PE inner layer, a reinforcing layer and a surface layer, the strength of the pipe body is improved, the oxidation resistance of a graphite layer on the surface is excellent, the impact force and the negative pressure generated by the phenomena of a positive water hammer and a negative water hammer can be utilized by arranging a fixed pipe and a pneumatic collecting device of a surface of the fixed pipe, the piston sheet is driven to move, so that the outside air is injected into an air storage tank, the air reaching certain air pressure after being compressed is utilized, a ring pipe is driven to rotate by a pneumatic motor, the inner wall of the pipe body is cleaned by a cleaning rod, the labor is saved, the cleaning is convenient, an additional power source does not need to be erected, the water hammer effect.
2. According to the novel PE pipe body with the anti-bonding inner wall, the rotating ring pipe can be further arranged in the middle of the pipe body, the cleaning rods can be arranged on two sides of the pipe body, the length of each cleaning rod can be shortened, and cleaning liquid can be added into the cleaning rods by arranging the liquid storage box and the connecting pipe, so that the cleaning efficiency is improved, and the novel PE pipe body is convenient and rapid to use.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a cross-sectional view of the pipe body of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
FIG. 4 is a schematic front sectional view of the grommet of FIG. 1;
FIG. 5 is a schematic structural view of example 2 of the present invention;
fig. 6 is an enlarged schematic view of B in fig. 5.
In the figure: the device comprises a pipeline body 1, a control valve 2, a fixed pipe 3, a piston cylinder 4, a movable rod 5, a piston sheet 6, a push plate 7, a linear sealing bearing 8, a return spring 9, a one-way air inlet pipe 10, a one-way air outlet pipe 11, a ring pipe 12, a pneumatic motor 13, an air storage tank 14, a cleaning rod 15, a PE inner layer 16, a reinforcing layer 17, a surface layer 18, an opening and closing valve 19, a driving gear 20, an outer gear ring 21, a liquid storage box 22, a connecting pipe 23 and a mounting ring 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-4, a novel PE pipe body with an anti-bonding inner wall comprises a pipe body 1, a control valve 2 is installed at one end of the pipe body 1, the pipe body 1 is close to the control valve 2 and located at a water outlet end of the pipe body 1, a fixing pipe 3 is installed at the water outlet end of the pipe body 1, the pipe body 1 is composed of a PE inner layer 16, a reinforcing layer 17 and a surface layer 18 from inside to outside, the PE inner layer 16 is made of PE plastic, the reinforcing layer 17 is made of a stainless steel aluminum belt, and the surface layer 18 is made of a graphite coating with the thickness of 2 cm.
Fixed pipe 3's surface is provided with pneumatic collection device, pneumatic collection device is by piston cylinder 4, movable rod 5, piston piece 6 and push pedal 7 are constituteed, 4 fixed connection on fixed pipe 3's surface of piston cylinder, and the through-hole has all been seted up on the upper and lower surface, the inside at the through-hole is all installed through linear seal bearing 8 in the top and the bottom of movable rod 5, movable rod 5 is located the inside surface mounting of piston cylinder 4 and has reset spring 9, 6 fixed connection on the surface of movable rod 5 of piston piece, and be located reset spring 9 the below and be less than 0.5mm with the inner wall clearance of piston cylinder 4, 7 fixed connection of push pedal is in the bottom that movable rod 5 extends to 1 inside of pipeline body, two one-way intake pipe 10 are installed on piston cylinder 4's right side, two one-way outlet duct 11 are installed in piston cylinder 4.
The middle part of the pipeline body 1 is provided with a rotatable ring pipe 12 through a mounting ring 24, the inner wall of the mounting ring 24 is fixedly connected with the ring pipe 12 through a waterproof sealing bearing, the upper surface of the pipeline body 1 is provided with a pneumatic motor 13 for driving the ring pipe 12 to rotate, and the output end of the piston cylinder 4 supplies air to the pneumatic motor 13 through an air storage tank 14; the inner wall of the ring pipe 12 is fixedly connected with a cleaning rod 15 extending to the inside of the pipeline body 1, and the cleaning rod 15 is matched and attached with the radian of the inner wall of the pipeline body 1.
The quantity of pneumatic collection device is a plurality of, and a plurality of pneumatic collection device circumference equidistance sets up on the surface of fixed pipe 3, and a plurality of pneumatic collection device's one-way outlet pipe 11 all communicates with gas holder 14, and open and shut valve 19 is installed to the left side output of gas holder 14, and drive gear 20 is installed to pneumatic motor 13's output shaft, and the surface of ring canal 12 is provided with external gear ring 21, and drive gear 20 meshes with external gear ring 21.
In this embodiment, pipeline body 1 is by PE inlayer 16, enhancement layer 17 and top layer 18 are constituteed, the body intensity has been increased, and the surface graphite layer is anti-oxidation performance is superior, through setting up the pneumatic collection device of fixed pipe 3 and table, can utilize the impact force and the negative pressure that positive water hammer and negative water hammer phenomenon produced, drive the activity of piston piece 6, thereby pour into the inside of air holder 14 with the outside air, utilize the air that reaches certain atmospheric pressure after the compression, drive ring pipe 12 through pneumatic motor 13 and rotate, wash the inner wall of pipeline body 1 through clearance pole 15, thereby use manpower sparingly, be convenient for clear up, need not additionally to erect the power supply, simultaneously cushion water hammer effect, protect the pipeline.
Example 2
Referring to fig. 5 to 6, the difference from embodiment 1 is that the ring pipe 12 is installed in the middle of the pipe body 1, the cleaning rod 15 is made of a stainless steel hollow pipe, and a plurality of outlets are opened on one surface of the cleaning rod which is attached to the pipe body 1, the surface of the ring pipe 12 is provided with a liquid storage box 22, and the liquid storage box 22 is communicated with the inside of the cleaning rod 15 through a connecting pipe 23.
In this embodiment, pivoted ring pipe 12 can also set up at the middle part of pipeline body 1, and both sides all can set up clearance pole 15, can shorten clearance pole 15's length, through setting up stock solution box 22 and connecting pipe 23, can be to the inside washing liquid that adds of clearance pole 15 to improve cleaning efficiency, convenient and fast.
When the novel PE pipe body with the anti-bonding inner wall provided by the invention is used and needs to be cleaned, the control valve 2 is closed, so that the positive water hammer effect can be caused, the excessive water generates impact force on the push plate 7 to drive the piston sheet 6 to ascend, air above the piston sheet 6 is pushed to enter the air storage tank 14, then the control valve 2 is opened, so that the negative water hammer effect can be caused, and the air below the piston sheet 6 is pushed to enter the air storage tank 14, so that air can be added into the air storage tank 14, when the internal pressure is overlarge, the opening and closing valve 19 can be opened, the pneumatic motor 13 is used for driving the ring pipe 12 to rotate, and the cleaning rod 15 is used for cleaning the inner wall of the pipe body 1, so that the labor is saved, the cleaning is convenient, no additional power source is needed, the water hammer effect is buffered, and.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (6)

1. The utility model provides a novel PE body that bonding is prevented to inner wall, includes pipeline body (1), its characterized in that: the pipeline comprises a pipeline body (1), a control valve (2) is installed at one end of the pipeline body (1), the pipeline body (1) is close to the control valve (2) and is located at a water outlet end of the pipeline body (1) to install a fixed pipe (3), a pneumatic collecting device is arranged on the surface of the fixed pipe (3) and consists of a piston cylinder (4), a movable rod (5), a piston sheet (6) and a push plate (7), the piston cylinder (4) is fixedly connected to the surface of the fixed pipe (3), through holes are formed in the upper surface and the lower surface of the piston cylinder, the top end and the bottom end of the movable rod (5) are installed inside the through holes through linear sealing bearings (8), a reset spring (9) is installed on the surface of the movable rod (5) located inside the piston cylinder (4), the piston sheet (6) is fixedly connected to the surface of the movable rod (5), is located below the reset spring (9) and is smaller than 0.5mm from the gap of the inner wall of the, the push plate (7) is fixedly connected to the bottom end of the movable rod (5) extending to the interior of the pipeline body (1), two one-way air inlet pipes (10) are installed on the right side of the piston cylinder (4), and two one-way air outlet pipes (11) are installed on the left side of the piston cylinder (4);
the middle part of the pipeline body (1) is provided with a rotatable ring pipe (12) through a mounting ring (24), the inner wall of the mounting ring (24) is fixedly connected with the ring pipe (12) through a waterproof sealing bearing, the upper surface of the pipeline body (1) is provided with a pneumatic motor (13) for driving the ring pipe (12) to rotate, and the output end of the piston cylinder (4) supplies air to the pneumatic motor (13) through an air storage tank (14);
the inner wall of the ring pipe (12) is fixedly connected with a cleaning rod (15) extending to the inside of the pipeline body (1), and the cleaning rod (15) is matched and attached to the inner wall of the pipeline body (1) in radian.
2. The novel PE pipe body with the anti-bonding inner wall as claimed in claim 1, wherein: the pipeline body (1) comprises a PE inner layer (16), a reinforcing layer (17) and a surface layer (18) from inside to outside, the material of the PE inner layer (16) is PE plastic, the material of the reinforcing layer (17) is a stainless steel aluminum strip, and the material of the surface layer (18) is a graphite coating with the thickness of 2 cm.
3. The novel PE pipe body with the anti-bonding inner wall as claimed in claim 1, wherein: the quantity of pneumatic collection device is a plurality of, and a plurality of pneumatic collection device circumference equidistance sets up on the surface of fixed pipe (3), and a plurality of pneumatic collection device's one-way outlet duct (11) all communicate with gas holder (14).
4. The novel PE pipe body with the anti-bonding inner wall as claimed in claim 1, wherein: an opening and closing valve (19) is installed at the left output end of the air storage tank (14), a driving gear (20) is installed at the output shaft of the pneumatic motor (13), an external gear ring (21) is arranged on the surface of the ring pipe (12), and the driving gear (20) is meshed with the external gear ring (21).
5. The novel PE pipe body with the anti-bonding inner wall as claimed in claim 1, wherein: the cleaning rod (15) is made of a stainless steel hollow pipe, and a plurality of outlets are formed in one surface attached to the pipeline body (1).
6. The novel PE pipe body with the anti-bonding inner wall as claimed in claim 1, wherein: the surface of the ring pipe (12) is provided with a liquid storage box (22), and the liquid storage box (22) is communicated with the inside of the cleaning rod (15) through a connecting pipe (23).
CN202010993459.1A 2020-09-21 2020-09-21 Novel PE body that bonding is prevented to inner wall Withdrawn CN112013169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010993459.1A CN112013169A (en) 2020-09-21 2020-09-21 Novel PE body that bonding is prevented to inner wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010993459.1A CN112013169A (en) 2020-09-21 2020-09-21 Novel PE body that bonding is prevented to inner wall

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CN112013169A true CN112013169A (en) 2020-12-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112845410A (en) * 2021-01-06 2021-05-28 新疆农业大学 Novel hydraulic engineering uses water conservancy pipeline
CN113090858A (en) * 2021-03-01 2021-07-09 焦微嘉 Water diversion device for hydraulic engineering construction based on ecological protection technology
CN114011323A (en) * 2021-11-11 2022-02-08 重庆市佳佳乳业有限责任公司 Compound protein drink production system
CN114738592A (en) * 2022-05-09 2022-07-12 浙江肥特科技有限公司 Anti-blocking device for water inlet pipeline of irrigation water supply pump and control method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005226690A (en) * 2004-02-10 2005-08-25 Hoshizaki Electric Co Ltd Water hammer arrestor structure
CN102235563A (en) * 2010-03-26 2011-11-09 奥拉尔(瑞士)股份公司 Pressure equalising device for systems through which fluid flows
CN103016901A (en) * 2012-11-28 2013-04-03 华英伦科技(宁波)有限公司 Integrated device for filtering pipelines, removing water hammer and preventing frost crack
CN109668005A (en) * 2018-11-22 2019-04-23 江苏理文化工有限公司 A kind of good antiscale property efficient liquid delivery pipe
CN210113444U (en) * 2019-04-18 2020-02-25 天津市久金管道工程有限公司 Pipeline with waterproof hammer function
CN213575989U (en) * 2020-09-17 2021-06-29 王明豪 A new type of PE pipe body with anti-bonding inner wall

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005226690A (en) * 2004-02-10 2005-08-25 Hoshizaki Electric Co Ltd Water hammer arrestor structure
CN102235563A (en) * 2010-03-26 2011-11-09 奥拉尔(瑞士)股份公司 Pressure equalising device for systems through which fluid flows
CN103016901A (en) * 2012-11-28 2013-04-03 华英伦科技(宁波)有限公司 Integrated device for filtering pipelines, removing water hammer and preventing frost crack
CN109668005A (en) * 2018-11-22 2019-04-23 江苏理文化工有限公司 A kind of good antiscale property efficient liquid delivery pipe
CN210113444U (en) * 2019-04-18 2020-02-25 天津市久金管道工程有限公司 Pipeline with waterproof hammer function
CN213575989U (en) * 2020-09-17 2021-06-29 王明豪 A new type of PE pipe body with anti-bonding inner wall

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112845410A (en) * 2021-01-06 2021-05-28 新疆农业大学 Novel hydraulic engineering uses water conservancy pipeline
CN112845410B (en) * 2021-01-06 2022-06-17 新疆农业大学 Hydraulic pipeline for hydraulic engineering
CN113090858A (en) * 2021-03-01 2021-07-09 焦微嘉 Water diversion device for hydraulic engineering construction based on ecological protection technology
CN114011323A (en) * 2021-11-11 2022-02-08 重庆市佳佳乳业有限责任公司 Compound protein drink production system
CN114738592A (en) * 2022-05-09 2022-07-12 浙江肥特科技有限公司 Anti-blocking device for water inlet pipeline of irrigation water supply pump and control method thereof

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Application publication date: 20201201