EP0523328A2 - Soupape de pulvérisation ajustable - Google Patents

Soupape de pulvérisation ajustable Download PDF

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Publication number
EP0523328A2
EP0523328A2 EP92106915A EP92106915A EP0523328A2 EP 0523328 A2 EP0523328 A2 EP 0523328A2 EP 92106915 A EP92106915 A EP 92106915A EP 92106915 A EP92106915 A EP 92106915A EP 0523328 A2 EP0523328 A2 EP 0523328A2
Authority
EP
European Patent Office
Prior art keywords
piston
spring
sleeve
nozzle valve
valve according
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
EP92106915A
Other languages
German (de)
English (en)
Other versions
EP0523328A3 (en
Inventor
Richard Voss
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.)
Voss Richard Grubenausbau GmbH
Original Assignee
Voss Richard Grubenausbau GmbH
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
Application filed by Voss Richard Grubenausbau GmbH filed Critical Voss Richard Grubenausbau GmbH
Publication of EP0523328A2 publication Critical patent/EP0523328A2/fr
Publication of EP0523328A3 publication Critical patent/EP0523328A3/de
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/22—Equipment for preventing the formation of, or for removal of, dust

Definitions

  • the invention relates to a spray valve, in particular for hydraulic shield removal in underground mining with a housing with connecting sleeves for water supply and water outflow, as well as the control pressure sleeve for the hydraulic pressure line leading to the punch and in the housing against the force of a spring in the connection hole between water supply. and water drain sliding piston.
  • the floating dust is sprayed in underground mining, whereby this is precipitated by the finely sprayed water.
  • spraying in the form of internal and external nozzles on the roller loader is known.
  • the planing alley is used to deposit fine dust.
  • the spraying in the form of gap surface, cap, rear and break area spraying is used on the expansion of the step.
  • nozzles are used at the transfer points in the promotion and on shredding machines. Common to all these different areas of application is that only as much water is to be released as is required to precipitate the suspended dust. Otherwise, the sprayed water can adversely affect the person lying down or the material being conveyed, or it can hinder the miners.
  • spray valves are used, which ensure a time-limited application area of the spraying that is tailored to the respective application.
  • Such spray valves in the area of shield removal are switched so that spray water only escapes in the period in which the respective removal is solved and moved. If, on the other hand, he is in a tensioned state, the spray valve shuts off the water inflow. This is achieved in that the piston is pressed against the force of an actuating spring by the pressure fluid from the supply line of the expansion into the valve seat. The valve then locks.
  • the invention is therefore based on the object of creating a little space-consuming nozzle valve which can be precisely adjusted with respect to the opening pressure.
  • the object is achieved in that the water inflow the piston is displaceably connected from the valve seat and that the piston consists of control piston and outer piston, the control piston, which has a smaller diameter formed on the outer piston, against the spring designed as an adjusting spring is arranged supporting.
  • the check valve method previously used is dispensed with and instead a valve is created which is controlled exclusively by the pressure applied to the consumer, ie the stamp here.
  • the spring or spring force is completely disregarded.
  • the spring is only required to determine the opening pressure of the valve, which is advantageous because this opening pressure can now be set precisely by adjusting the adjusting spring.
  • a very small spring can be used for the function of the actuating spring, so that such spray valves are advantageously small and can be used practically anywhere. This use occurs practically directly at the consumer, so that long cable routes can be avoided.
  • control piston is designed as a metal pin on which the outer piston, which is made of plastic, is arranged to encompass it.
  • the control piston which is acted upon via the hydraulic pressure line, is designed to be correspondingly stable, the plastic outer piston ensuring an advantageously tight fit, so that a precisely working valve is provided.
  • the actuating spring is arranged in a spring sleeve screwed into the housing, into which the control piston is inserted in a supporting manner against the spring plate. Since the spring is only required to determine the opening pressure, a relatively small-sized spring can be used, which in turn is accommodated in a spring sleeve that is easy to install and takes up little space.
  • the spring sleeve is designed so that the control piston is guided in it, so that an accurate displacement path is guaranteed.
  • the spring is supported once on the spring plate and on the other hand on the adjusting screw, so that the control piston pressing against the spring plate from the other side can be specifically loaded, so that it specifies the opening pressure that is desired or necessary for the respective application is.
  • This adjustment is carried out by the adjusting screw, it being provided according to the invention that an adjusting screw which is displaceable in the direction of the spring plate and clamps the adjusting spring is arranged on the side of the spring sleeve opposite the introduction for the control piston.
  • This set screw can be turned with the help of an Allen key in the hole provided and moved towards or away from the spring plate, so that the force of the spring and thus the opening pressure can be set within wide limits.
  • the invention provides that an O-ring with a groove in the inner bore of the outer piston is arranged correspondingly on the control piston.
  • the control piston has a corresponding annular projection, so that the outer piston is effectively fixed after being pushed onto the control piston and is pressed firmly onto the sealing surface for complete sealing via the movement of the control piston.
  • control pressure sleeve is designed as a rotary sleeve and has a piston guide.
  • the control piston is thus precisely guided on one side in the control pressure sleeve and on the opposite side in the spring sleeve, so that a precise sequence of movements is ensured and, in addition, easy assembly of the control piston and the associated parts.
  • threads for the spring sleeve on the one hand and the control pressure sleeve on the other hand only the threads for the connection sleeves are required, via which the supply hoses for the spraying can be connected.
  • the piston guide is designed to receive only the control piston, while the outer piston is correspondingly shorter and designed so that it can be effectively pressed against the valve seat.
  • the control piston itself can have a correspondingly small diameter, whereby it should be so stable that a smooth sliding of the piston in the housing or in the guides on both sides is possible.
  • the control piston is thus securely guided on the one hand in the spring sleeve and on the other hand in the corresponding recess or blind hole of the spring plate, so that tilting of both parts is impossible.
  • the spring sleeve is advantageously sealed off from the water-carrying connecting bore by the spring sleeve having on the screw-in side a guide bore which receives the control piston and in the inner wall of which an O-ring is embedded. This O-ring thus grinds on the control piston and ensures an effective seal of the interior of the spring sleeve with respect to the connecting bore.
  • the easy assembly of the spray valve according to the invention also serves a design according to which the connecting sleeves have a sleeve nipple which can be inserted into the sleeve from the receiving bore for the plug-in nipple and has an internal hexagon accessible via the receiving bore, which is equipped with an annular shoulder supported on a corresponding projection.
  • the invention is characterized in particular by the fact that an advantageously small-sized spray valve is created which is particularly suitable for use in underground mining.
  • the spray valve consists first of all of a relatively small housing, into or into which the spring sleeve with the adjusting spring and the control pressure sleeve with the control piston are inserted and screwed in.
  • the connection sleeves for the water supply or the water drain are provided on the side, the direction of flow of the spraying water being reversed, so that the actuating spring is now not responsible for the opening and closing of the valve, but only for the amount of the opening pressure.
  • the piston is designed as a differential piston, so that overall a very small spring is used, via which the opening pressure can be set effectively.
  • connection sleeves (3, 4) for the supply and discharge of the water required for spraying. Accordingly, both connection sleeves (3, 4) are connected via a connecting bore (6) in the housing (2).
  • a piston (7) which can be inserted from the control pressure sleeve (5), projects into this connecting bore (6). This piston (7) is pressed into the valve seat (8) via the hydraulic pressure on the control pressure sleeve (5), which represents the lower half of the illustration.
  • the opening pressure can be set, at which the piston (7) begins to move, ie at which it pushes into the valve seat (8) or lifts it out of the valve seat (8) .
  • the water inflow (10) through the connecting sleeve (3) through the connecting hole (6) through to the connecting sleeve (4) to spray the water through the nozzles, not shown here, and thus deposit the suspended dust.
  • the piston (7) is designed as a differential piston, i.e. it consists of the control piston (13) and the outer piston (14), the outer piston, as illustrated in FIG. 1, made of plastic and the control piston (13) being pushed onto it in a comprehensive manner.
  • a spring sleeve (15) is arranged on the side opposite the control pressure sleeve (5), in which the adjusting spring (9) is accommodated.
  • the spring sleeve (15) has an insertion (16) which can be inserted or screwed into a corresponding recess in the housing (2).
  • the control piston (13) lies with its rounded tip (21) in a corresponding blind bore (22) of the spring plate (23). This ensures reliable guidance of the control piston (13), the spring plate (23) forming one abutment and the adjusting screw (24) forming the other abutment for the adjusting spring (9).
  • the set screw (24) has a thread (25) so that it can be moved in the direction of the spring plate (23), which can be achieved by inserting an Allen key into the hexagon opening of the set screw (24). Correspondingly, it can also be turned back so that the opening pressure can be set precisely via the adjusting spring (9).
  • the blind bore (22) is formed on the underside (26) of the spring plate (23), the spring plate (23) having bevels on the side in order to be able to use a spring plate (23) which can also be used in conventional pressure relief valves and the like. Valves is used. This can significantly reduce the number of spare parts.
  • an O-ring (27) is used, which is arranged or arranged with the groove (28) in the inner bore (29) of the outer piston (14) . is trained. Since the control piston (13) also has an annular extension (31), the outer piston (14) is to be fixed so effectively once it has been brought into the position shown in FIG. 1.
  • the control pressure sleeve (5) is equipped at the end with a recess (32) into which the end of the control piston (13) is inserted, so that a cheaply designed effective piston guide (30) results.
  • the comparison of the upper and lower representation of the spray valve (1) according to FIG. 1 shows that the control piston (13) and thus the entire piston (7) can make the necessary movements without slipping out of the piston guide (30) or the guide bore (18). This ensures safe operation of the spray valve (1).
  • Fig. 2 illustrates the design of the spring sleeve (15), it becoming clear that there is a closed housing for receiving the actuating spring (9), in which on one side of the control piston (13) protrudes, while on the other side Adjusting screw (24) is displaceable in it.
  • the spring can be preloaded to precisely determine the opening pressure of the spray valve (1).
  • Fig. 2 illustrates a low opening pressure, since it is to be ensured in this way that the spray valve (1) starts early and thus ensures that spray water is released even with the slightest movements of the shield removal to the suspended dust or when lowering to remove dust released during expansion.
  • Fig. 3 shows one of the two connection sleeves (3, 4), partly in section, to illustrate that here a particularly suitable embodiment is used for the intended application.
  • the plug-in nipple (34) is inserted into the connecting sleeve (3) via the receiving bore (33), this receiving bore (33) simultaneously serving to insert the sleeve nipple (36) into the sleeve (35).
  • the sleeve nipple (36) is dimensioned so that it is easy to insert, and it can then be screwed into the corresponding receiving bore of the housing (2) via the hexagon socket (37).
  • the sleeve (35) has a circumferential projection (38), while the sleeve nipple (36) on the other hand has a corresponding ring shoulder (39).
  • head Start (38) and ring shoulder (39) are dimensioned so small that the necessary stabilities are guaranteed, whereby it surprisingly turns out that these dimensions are sufficient for the projection (38) and ring shoulder (39), because a corresponding height of the projection (38 ) is available so that the necessary security is given.
  • This design is particularly advantageous in that the sleeve sleeve is made of high-strength brass and the sleeve nipple is made of stainless steel, so that long service lives are guaranteed.
  • wires etc. not be used for mounting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Nozzles (AREA)
  • Safety Valves (AREA)
EP19920106915 1991-07-17 1992-04-23 Adjustable spraying valve Ceased EP0523328A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4123610 1991-07-17
DE19914123610 DE4123610C2 (de) 1991-07-17 1991-07-17 Einstellbares Bedüsungsventil

Publications (2)

Publication Number Publication Date
EP0523328A2 true EP0523328A2 (fr) 1993-01-20
EP0523328A3 EP0523328A3 (en) 1993-04-21

Family

ID=6436311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920106915 Ceased EP0523328A3 (en) 1991-07-17 1992-04-23 Adjustable spraying valve

Country Status (3)

Country Link
EP (1) EP0523328A3 (fr)
DE (1) DE4123610C2 (fr)
PL (1) PL168633B1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154177A3 (fr) * 2000-05-12 2003-02-12 Richard Voss Grubenausbau Gmbh Soupape anti-retour
CN102434188A (zh) * 2011-12-14 2012-05-02 枣庄矿业（集团）有限责任公司滨湖煤矿 综掘工作面煤层长距离深孔注水工艺
CN103899271A (zh) * 2014-04-23 2014-07-02 中国矿业大学(北京) 突出煤层采煤工作面长钻孔脉动注水防突方法
CN107762541A (zh) * 2017-10-26 2018-03-06 鸿大智能机械有限公司 液控单向阀的自动卸载装置
CN107842380A (zh) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 自动卸载液控单向阀的阀芯组件
CN107842381A (zh) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 自动卸载液控单向阀
CN107842382A (zh) * 2017-10-27 2018-03-27 鸿大智能机械有限公司 液控单向阀
CN107859524A (zh) * 2017-10-27 2018-03-30 鸿大智能机械有限公司 液控单向阀的阀芯组件
US10024157B2 (en) 2015-12-04 2018-07-17 Joy Global Underground Mining Llc Spray nozzle for underground roof support

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209916C2 (de) * 1992-03-27 1995-12-14 Vos Richard Grubenausbau Gmbh Bedüsungsventil mit Zuhalte
DE4323462C2 (de) * 1993-07-14 1995-05-04 Vos Richard Grubenausbau Gmbh Ausbaustempel für den Untertageeinsatz mit integriertem Druckbegrenzungsventil
DE102017206007B4 (de) * 2017-04-07 2023-06-15 Festo Se & Co. Kg Druckregelventil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7301728U (de) * 1973-07-12 Boehmer W Gmbh Ventil für den hydraulischen Strebausbau
US2829670A (en) * 1954-06-01 1958-04-08 Halliburton Oil Well Cementing Remote control valve assembly
DE2305361A1 (de) * 1973-02-03 1974-08-08 Gewerk Eisenhuette Westfalia Vorrichtung zur automatischen wasserbeduesung in bergbau-gewinnungsbetrieben
CH596485A5 (fr) * 1975-08-20 1978-03-15 Sulzer Ag
GB1473267A (en) * 1975-12-06 1977-05-11 Hayden Nilos Conflow Ltd Mining machines

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154177A3 (fr) * 2000-05-12 2003-02-12 Richard Voss Grubenausbau Gmbh Soupape anti-retour
CN102434188A (zh) * 2011-12-14 2012-05-02 枣庄矿业（集团）有限责任公司滨湖煤矿 综掘工作面煤层长距离深孔注水工艺
CN103899271A (zh) * 2014-04-23 2014-07-02 中国矿业大学(北京) 突出煤层采煤工作面长钻孔脉动注水防突方法
US10024157B2 (en) 2015-12-04 2018-07-17 Joy Global Underground Mining Llc Spray nozzle for underground roof support
US10378354B2 (en) 2015-12-04 2019-08-13 Joy Global Underground Mining Llc Spray nozzle for underground roof support
CN107762541A (zh) * 2017-10-26 2018-03-06 鸿大智能机械有限公司 液控单向阀的自动卸载装置
CN107842380A (zh) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 自动卸载液控单向阀的阀芯组件
CN107842381A (zh) * 2017-10-26 2018-03-27 鸿大智能机械有限公司 自动卸载液控单向阀
CN107842382A (zh) * 2017-10-27 2018-03-27 鸿大智能机械有限公司 液控单向阀
CN107859524A (zh) * 2017-10-27 2018-03-30 鸿大智能机械有限公司 液控单向阀的阀芯组件

Also Published As

Publication number Publication date
PL168633B1 (pl) 1996-03-29
PL295244A1 (fr) 1993-02-08
DE4123610A1 (de) 1993-01-21
DE4123610C2 (de) 1994-04-28
EP0523328A3 (en) 1993-04-21

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