CN112855964A - Coal mine working face gas extraction pressure limiting valve - Google Patents
Coal mine working face gas extraction pressure limiting valve Download PDFInfo
- Publication number
- CN112855964A CN112855964A CN202110002862.8A CN202110002862A CN112855964A CN 112855964 A CN112855964 A CN 112855964A CN 202110002862 A CN202110002862 A CN 202110002862A CN 112855964 A CN112855964 A CN 112855964A
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- pressure
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- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000000605 extraction Methods 0.000 title claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 230000004888 barrier function Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005065 mining Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0209—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor the valve having a particular passage, e.g. provided with a filter, throttle or safety device
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0058—Optical means, e.g. light transmission, observation ports
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a gas extraction pressure limiting valve for a coal mine working face, which comprises a connecting pipe, wherein a connecting table is arranged on the connecting pipe, a connecting cylinder is fixedly connected to the right side of the upper end of the connecting table, a pressure relief pipe is fixedly connected to the left side of the upper end of the connecting table, threads are arranged on the outer side wall of the connecting cylinder, a knob is connected to the upper side of the connecting cylinder in a threaded manner, a valve core is connected to the middle of the connecting cylinder in a sliding manner, a connecting plate is fixedly connected to the position, right opposite to the valve core, of the connecting pipe, a vent hole is formed in the middle of the connecting plate, a pressure relief channel is arranged right opposite to the pressure relief pipe, a sealing bead is arranged on the lower side of the pressure relief channel, a pressure relief hole is formed in the connecting table and is communicated with the connecting pipe.
Description
Technical Field
The invention relates to the field of coal mining, in particular to a gas extraction pressure limiting valve for a coal mine working face.
Background
A large amount of gas can be generated in the coal mine in the mining process, when the concentration of the gas reaches a certain value, the gas can explode when exposed fire occurs, and the death number caused by gas explosion accounts for more than half of the total death number of coal mine accidents for a long time. The methane is used as a main component of the gas, so that the gas is adsorbed on the surface of coal matrix particles, and part of the gas is dissociated in coal pores or hydrocarbon gas dissolved in coal bed water. In order to reduce potential safety hazards, the generated gas can be extracted for recycling while coal mining, and the coal mining device is more energy-saving and environment-friendly. When gas is extracted, a pressure limiting valve is needed to limit pressure, so that potential safety hazards caused by overlarge pressure in a pipeline are avoided.
Disclosure of Invention
The invention aims to provide a gas extraction pressure limiting valve for a coal mine working face, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a colliery operation face gas drainage pressure-limiting valve, includes the connecting pipe, be equipped with the connection platform on the connecting pipe, connect bench end right side fixedly connected with connecting cylinder, connect bench end left side fixedly connected with pressure release pipe, be equipped with the screw thread on the lateral wall of connecting cylinder, the upside threaded connection of connecting cylinder has the knob, sliding connection has the case in the middle of the connecting cylinder, sliding connection has the spliced pole in the middle of the upside of case, the connecting pipe is just to case department fixedly connected with connecting plate, the centre of connecting plate is equipped with the blow vent, the connection platform is just being equipped with the pressure release way to pressure release pipe department, the downside of pressure release way is equipped with the seal pearl, the downside that the connection platform is located the seal pearl is equipped with the pressure release hole.
Preferably, the middle of knob fixedly connected with extrusion post, the downside of extrusion post is just to the spliced pole, the middle fixedly connected with barrier plate of the downside of case, the downside of barrier plate runs through the connecting pipe, the downside sliding connection of barrier plate is in the centre of connecting plate, the centre of connecting plate is equipped with the spread groove, barrier plate and spread groove sliding connection.
Preferably, the ball is inlayed to the side of the both sides of case, the joint table just is equipped with the connection chamber to the connecting cylinder, be equipped with reset spring in the connection chamber, connect the middle and connection chamber intercommunication of connecting cylinder, reset spring's upside supports and leans on the downside in the case, reset spring's downside is located connecting pipe department, reset spring twines on the barrier plate.
Preferably, the pressure release hole is circular structure, the pressure release is said and rectangular structure, the crossing department of pressure release way and pressure release hole is the arc concave surface, the arc concave surface is equipped with sealing rubber around pressure release hole department, the radian phase-match of sealing pearl and arc concave surface.
Preferably, the upside sliding connection that the pressure release was said and is located the sealed pearl has the pressing plate, the downside of pressing the pressing plate is equipped with the sphere groove, sealed pearl upside and sphere groove agree with mutually, the upside sliding connection that the pressure release was said and is located the pressing plate has the regulating plate, be equipped with coupling spring between regulating plate and the pressing plate, fixedly connected with warning strip in the middle of the upside of sealed pearl, warning strip runs through pressing plate and regulating plate, warning strip upper end and pressure release pipe upside are parallel, scribble fluorescent coating on the warning strip.
Preferably, the middle of the pressure release pipe is in threaded connection with a connecting ring, both sides of the pressure release pipe are provided with slideways, two driving plates are arranged in the middle of the pressure release pipe, the two driving plates are symmetrically arranged and are in sliding connection in the middle of the slideways, and the lower sides of the two driving plates extend to the adjusting plate and are fixedly connected with the upper side end face of the adjusting plate.
Preferably, the drive plate is of an L-shaped structure, a guide groove is formed in the middle of the connecting ring, the upper side of the drive plate is located in the middle of the guide groove of the connecting ring, a connecting bead is rotatably connected to a position, located in the guide groove, of the upper side of the drive plate, and the drive plate is slidably connected to the guide groove through the connecting bead.
Compared with the prior art, the invention has the beneficial effects that: the rotary knob drives the extrusion column to extrude the connecting column and the valve core, the valve core slides in the connecting cylinder through the ball to compress the reset spring, the valve core drives the blocking plate to move in the connecting groove to block the vent hole at the connecting plate, the pressure in the connecting pipe is changed by adjusting the area of the vent hole, when the pressure in the connecting pipe is overlarge, the gas jacks up the sealing bead to enable the pressure relief hole to be communicated with the pressure relief channel to relieve the pressure in the pipeline, so that potential safety hazards caused by overlarge pressure in the connecting pipe are avoided, the sealing bead jacks up the warning strip when moving, the warning strip extends out of the pressure relief pipe, a fluorescent coating on the warning strip is convenient for an operator to observe, the operator is warned, the connecting ring is rotated to drive the driving plate to move along the slide, the driving plate drives the adjusting plate to move, and the distance between the adjusting plate and the pressing plate is, the pressure of pressure release is adjusted, the operation is simple and convenient, and the potential safety hazard caused by overlarge gas pressure in the connecting pipe can be effectively avoided.
Drawings
FIG. 1 is a schematic view of the internal connection structure of a pressure release valve;
FIG. 2 is a schematic view of the internal connection structure of the pressure relief pipe;
fig. 3 is a schematic view of a three-dimensional connection structure of the pressure relief pipe.
In the figure: the device comprises a connecting pipe 1, a connecting table 2, a connecting cylinder 3, a knob 4, an extrusion column 5, a valve core 6, a connecting column 7, a ball 8, a blocking plate 9, a return spring 10, a connecting plate 11, a vent hole 12, a connecting groove 13, a pressure relief pipe 14, a connecting ring 15, a pressure relief hole 16, a sealing bead 17, an arc concave surface 18, sealing rubber 19, a pressure relief channel 20, a pressing plate 21, a warning strip 22, a connecting spring 23, an adjusting plate 24, a slideway 25, a driving plate 26 and a connecting bead 27.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a colliery operation face gas drainage pressure limiting valve, including connecting pipe 1, be equipped with joint table 2 on connecting pipe 1, 2 upper end right side fixedly connected with connecting cylinders 3 of joint table, 2 upper end left side fixedly connected with pressure release pipe 14 of joint table, be equipped with the screw thread on the lateral wall of connecting cylinders 3, the upside threaded connection of connecting cylinders 3 has knob 4, sliding connection has case 6 in the middle of 3 connecting cylinders, sliding connection has spliced pole 7 in the middle of the upside of case 6, connecting pipe 1 is just to case 6 fixedly connected with connecting plate 11, the centre of connecting plate 11 is equipped with blow vent 12, joint table 2 is just being equipped with pressure release way 20 to pressure release pipe 14 department, the downside that pressure release way 20 is equipped with sealed pearl 17, the downside that joint table 2 is located sealed pearl 17 is equipped with pressure release hole 16, pressure release.
The centre fixedly connected with extrusion post 5 of knob 4, the downside of extrusion post 5 is just to spliced pole 7, fixedly connected with barrier plate 9 in the middle of the downside of case 6, the downside of barrier plate 9 runs through connecting pipe 1, the downside sliding connection of barrier plate 9 is in the centre of connecting plate 11, the centre of connecting plate 11 is equipped with spread groove 13, barrier plate 9 and spread groove 13 sliding connection, drive extrusion post 5 through rotatory knob 4 and extrude spliced pole 7 and case 6, case 6 drives barrier plate 9 and removes in spread groove 13 simultaneously, air vent 12 to connecting plate 11 department blocks, area through adjusting air vent 12, change the pressure size in the pipeline.
The side of the both sides of case 6 is inlayed and is had ball 8, connect platform 2 just to be equipped with the connection chamber to connecting cylinder 3, be equipped with reset spring 10 in the connection chamber, connect the middle and connection chamber intercommunication of connecting cylinder 3, reset spring 10's upside supports and leans on in case 6's downside, reset spring 10's downside is located connecting pipe 1 department, reset spring 10 twines on barrier plate 9, case 6 slides in connecting cylinder 3 through ball 8, ball 8 can reduce frictional force, case 6 compresses reset spring 10 at the in-process that moves down, reset spring 10 enables case 6 and resumes the normal position.
The pressure relief channel 20 is located at the upper side of the sealing bead 17 and is slidably connected with a pressing plate 21, the lower side of the pressing plate 21 is provided with a spherical groove, the upper side of the sealing bead 17 is matched with the spherical groove, the pressure relief channel 20 is located at the upper side of the pressing plate 21 and is slidably connected with an adjusting plate 24, a connecting spring 23 is arranged between the adjusting plate 24 and the pressing plate 21, a warning strip 22 is fixedly connected to the middle of the upper side of the sealing bead 17, the warning strip 22 penetrates through the pressing plate 21 and the adjusting plate 24, the upper end of the warning strip 22 is parallel to the upper side of the pressure relief pipe 14, a fluorescent coating is coated on the warning strip 22, in the process of pushing the sealing bead 17 upwards by gas, the pressure relief hole 16 is communicated with the pressure relief channel 20 to relieve the pressure inside the channel, so as to avoid potential safety hazards caused by overlarge pressure in the connecting pipe 1, meanwhile, the connecting spring 23 is compressed, the connecting spring 23 can enable the sealing bead, the fluorescent coating on the warning strip 22 is readily visible to the operator to alert the operator.
The middle threaded connection of pressure release pipe 14 has go-between 15, the both sides of pressure release pipe 14 all are equipped with slide 25, be equipped with two drive plates 26 in the middle of pressure release pipe 14, two drive plates 26 symmetry set up, two drive plates 26 are all sliding connection in the middle of slide 25, the downside of two drive plates 26 all extends to regulating plate 24 department, and with the upside terminal surface fixed connection of regulating plate 24, drive plate 26 also takes regulating plate 24 to move together along the lower extreme of drive plate 26 when slide 25 removes, adjust the position of regulating plate 24, change the distance between regulating plate 24 and the pressure board 21.
The middle of the connecting ring 15 with the L-shaped structure of the driving plate 26 is provided with a guide groove, the upper side of the driving plate 26 is located in the middle of the guide groove of the connecting ring 15, the part, located in the guide groove, of the upper side of the driving plate 26 is rotatably connected with a connecting bead 27, the driving plate 26 is connected in the guide groove in a sliding mode through the connecting bead 27, when the connecting ring 15 moves along the pressure relief pipe 14, the driving plate 26 slides in the guide groove of the connecting ring 15 through the connecting bead 27, the connecting ring 15 can drive the driving plate 16 to move along the slide way 25, and the.
The working principle is as follows: the rotary knob 4 drives the extrusion column 5 to extrude a connecting column 7 and a valve core 6, the valve core 6 slides in a connecting cylinder 3 through a ball 8 to compress a reset spring 10, meanwhile, the valve core 6 drives a blocking plate 9 to move in a connecting groove 13 to block an air vent 12 at a connecting plate 11, the pressure in the connecting pipe 1 is changed by adjusting the area of the air vent 12, when the pressure in the connecting pipe 1 is overlarge, gas jacks up a sealing bead 17 to enable a pressure relief hole 16 to be communicated with a pressure relief channel 20 to relieve the pressure in the pipeline, so that potential safety hazards caused by overlarge pressure in the connecting pipe 1 are avoided, the sealing bead 17 jacks up a warning strip 22 when moving, the warning strip 22 extends out of the pressure relief pipe 14, a fluorescent coating on the warning strip 22 is convenient for operators to observe, the operators are warned, and the connecting ring 15 is rotated to enable the connecting ring to move on the pressure relief pipe, the connecting ring 15 drives the driving plate 26 to move along the slide way 25 while moving, the driving plate 26 drives the adjusting plate 24 to move, the distance between the adjusting plate 24 and the pressing plate 21 is changed, the pressure for pressure relief is adjusted, and the connecting beads 27 can reduce friction force.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a colliery operation face gas drainage pressure limiting valve, includes connecting pipe (1), its characterized in that: the connecting pipe is characterized in that a connecting table (2) is arranged on the connecting pipe (1), a connecting cylinder (3) is fixedly connected to the right side of the upper end of the connecting table (2), a pressure relief pipe (14) is fixedly connected to the left side of the upper end of the connecting table (2), threads are arranged on the outer side wall of the connecting cylinder (3), a knob (4) is connected to the upper side of the connecting cylinder (3), a valve core (6) is connected to the middle of the connecting cylinder (3) in a sliding manner, a connecting column (7) is connected to the middle of the upper side of the valve core (6) in a sliding manner, a connecting plate (11) is fixedly connected to the valve core (6) through the connecting pipe (1), a vent (12) is arranged in the middle of the connecting plate (11), a pressure relief channel (20) is arranged to the pressure relief pipe (14) through the connecting table (2), a sealing bead (17) is arranged on the lower, the pressure relief hole (16) is communicated with the connecting pipe (1).
2. The coal mine working face gas extraction pressure limiting valve according to claim 1, characterized in that: the middle fixedly connected with extrusion post (5) of knob (4), the downside of extrusion post (5) is just to spliced pole (7), fixedly connected with barrier plate (9) in the middle of the downside of case (6), the downside of barrier plate (9) runs through connecting pipe (1), the downside sliding connection of barrier plate (9) is in the centre of connecting plate (11), the centre of connecting plate (11) is equipped with spread groove (13), barrier plate (9) and spread groove (13) sliding connection.
3. The coal mine working face gas extraction pressure limiting valve according to claim 1, characterized in that: the side of the both sides of case (6) is inlayed and is had ball (8), connect platform (2) just to being equipped with the connection chamber to connecting cylinder (3), be equipped with reset spring (10) in the connection chamber, connecting cylinder (3) centre and connecting chamber intercommunication, the upside of reset spring (10) is supported and is leaned on the downside in case (6), the downside of reset spring (10) is located connecting pipe (1) department, reset spring (10) twine on barrier plate (9).
4. The coal mine working face gas extraction pressure limiting valve according to claim 1, characterized in that: pressure release hole (16) are circular structure, pressure release way (20) are the rectangle structure, pressure release way (20) and the crossing department in pressure release hole (16) are arc concave surface (18), arc concave surface (18) are equipped with sealing rubber (19) around pressure release hole (16) department, the radian phase-match of sealing pearl (17) and arc concave surface (18).
5. The coal mine working face gas extraction pressure limiting valve according to claim 1, characterized in that: the upside sliding connection that pressure release says (20) and is located sealed pearl (17) presses down clamp plate (21), the downside of pressing down clamp plate (21) is equipped with the sphere groove, sealed pearl (17) upside and sphere groove agree with mutually, the upside sliding connection that pressure release says (20) and is located pressing down clamp plate (21) has regulating plate (24), be equipped with between regulating plate (24) and the pressing down clamp plate (21) connecting spring (23), fixedly connected with warning strip (22) in the middle of the upside of sealed pearl (17), warning strip (22) run through pressing down clamp plate (21) and regulating plate (24), warning strip (22) upper end and pressure release pipe (14) upside are parallel, scribble fluorescent coating on warning strip (22).
6. The coal mine working face gas extraction pressure limiting valve according to claim 1, characterized in that: the middle threaded connection of pressure release pipe (14) has go-between (15), the both sides of pressure release pipe (14) all are equipped with slide (25), be equipped with two drive plates (26) in the middle of pressure release pipe (14), two drive plate (26) symmetry sets up, two drive plate (26) all sliding connection in the middle of slide (25), two the downside of drive plate (26) all extends to regulating plate (24) department, and with the upside terminal surface fixed connection of regulating plate (24).
7. The coal mine working face gas extraction pressure limiting valve according to claim 6, characterized in that: the driving plate (26) is of an L-shaped structure, a guide groove is formed in the middle of the connecting ring (15), the upper side of the driving plate (26) is located in the middle of the guide groove of the connecting ring (15), a connecting bead (27) is rotatably connected to the position, located in the guide groove, of the upper side of the driving plate (26), and the driving plate (26) is slidably connected into the guide groove through the connecting bead (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002862.8A CN112855964A (en) | 2021-01-04 | 2021-01-04 | Coal mine working face gas extraction pressure limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110002862.8A CN112855964A (en) | 2021-01-04 | 2021-01-04 | Coal mine working face gas extraction pressure limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112855964A true CN112855964A (en) | 2021-05-28 |
Family
ID=76001539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110002862.8A Pending CN112855964A (en) | 2021-01-04 | 2021-01-04 | Coal mine working face gas extraction pressure limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112855964A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130233413A1 (en) * | 2010-11-01 | 2013-09-12 | Matthew Williamson | Pressure relief valve with orifice |
| CN104329497A (en) * | 2014-08-30 | 2015-02-04 | 中国科学院等离子体物理研究所 | Electromagnetic pressure relief valve |
| CN106195368A (en) * | 2016-08-30 | 2016-12-07 | 苏州科迪流体控制设备有限公司 | Pressure visual pressure release control and regulation valve |
| CN206530743U (en) * | 2017-02-27 | 2017-09-29 | 冯德蕾 | A kind of installation for fermenting check valve and installation for fermenting |
| CN207034283U (en) * | 2017-06-09 | 2018-02-23 | 盐城市大丰洪联铸钢有限责任公司 | A kind of check-valves |
| CN210178941U (en) * | 2019-06-06 | 2020-03-24 | 四川万通输配设备有限公司 | Gas regulator suitable for low pressure gas pipe network |
| CN210344349U (en) * | 2019-07-26 | 2020-04-17 | 浙江富锐实业有限公司 | High strength coal chemical industry effect plate valve |
| CN112032333A (en) * | 2020-08-21 | 2020-12-04 | 靖江市富源船舶配件有限公司 | Marine flange gate valve |
-
2021
- 2021-01-04 CN CN202110002862.8A patent/CN112855964A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130233413A1 (en) * | 2010-11-01 | 2013-09-12 | Matthew Williamson | Pressure relief valve with orifice |
| CN104329497A (en) * | 2014-08-30 | 2015-02-04 | 中国科学院等离子体物理研究所 | Electromagnetic pressure relief valve |
| CN106195368A (en) * | 2016-08-30 | 2016-12-07 | 苏州科迪流体控制设备有限公司 | Pressure visual pressure release control and regulation valve |
| CN206530743U (en) * | 2017-02-27 | 2017-09-29 | 冯德蕾 | A kind of installation for fermenting check valve and installation for fermenting |
| CN207034283U (en) * | 2017-06-09 | 2018-02-23 | 盐城市大丰洪联铸钢有限责任公司 | A kind of check-valves |
| CN210178941U (en) * | 2019-06-06 | 2020-03-24 | 四川万通输配设备有限公司 | Gas regulator suitable for low pressure gas pipe network |
| CN210344349U (en) * | 2019-07-26 | 2020-04-17 | 浙江富锐实业有限公司 | High strength coal chemical industry effect plate valve |
| CN112032333A (en) * | 2020-08-21 | 2020-12-04 | 靖江市富源船舶配件有限公司 | Marine flange gate valve |
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Application publication date: 20210528 |
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| RJ01 | Rejection of invention patent application after publication |