CN106439087A - Adaptive-angle dredging node valve used for coal mine gas drainage hole - Google Patents
Adaptive-angle dredging node valve used for coal mine gas drainage hole Download PDFInfo
- Publication number
- CN106439087A CN106439087A CN201610928651.6A CN201610928651A CN106439087A CN 106439087 A CN106439087 A CN 106439087A CN 201610928651 A CN201610928651 A CN 201610928651A CN 106439087 A CN106439087 A CN 106439087A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- dredge
- node
- angle
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000006978 adaptation Effects 0.000 claims description 23
- 210000001124 body fluid Anatomy 0.000 claims description 9
- 239000010839 body fluid Substances 0.000 claims description 9
- 230000013011 mating Effects 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 6
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 210000004247 hand Anatomy 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 58
- 238000000605 extraction Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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
- 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
- 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
- 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
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
-
- 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
Abstract
The invention relates to a valve special for a coal mine gas drainage system, in particular to an adaptive-angle dredging node valve used for a coal mine gas drainage hole. The adaptive-angle dredging node valve comprises a valve body and a valve element. The valve body is in a T shape. A T-shaped communicating hole is formed in the valve element. The front end of the T-shaped communicating hole in the valve element corresponds to a fluid inlet. The lower end of the T-shaped communicating hole corresponds to a fluid outlet. The rear end of the T-shaped communicating hole corresponds to a dredging port. A valve body switch sealing mechanism is arranged on the side, corresponding to the dredging port, of the valve element in a detachably matched mode. A flexible pipe structure with the angle adjustable is arranged in the fluid outlet end of the valve body in a communicating mode. The adaptive-angle dredging node valve used for the coal mine gas drainage hole is low in cost, one single gas drainage hole can be conveniently disconnected from the whole gas drainage system so as to be dredged, and the adaptive-angle dredging node valve can adapt to flexible connection between a horizontal connecting pipe system and different gas drainage holes of different drilling angles.
Description
Technical field
The present invention relates to a kind of special valve of gas drainage system of coal mine, specifically a kind of gas discharge in mine hole is used
Angle self adaptation can dredge node valve.
Background technology
The connection of gas drainage system of coal mine pipeline generally uses antistatic PVC or PE plastic tube and pipe fitting, most borrow people
Antistatic standard component with coal gas or natural gas.Pipeline connection is ordinary ball valve, elbow and threeway, will be with above having a down dip
The gas drainage pipe of rake angle and horizontally disposed gas connecting leg system couple together very inconvenient；General ball valve adjusts inconvenience,
Gas density control cannot be unfavorable for, when single gas according to the trickle regulation flow of the gas density of each gas extraction hole
Releasing pipe cannot disconnect system when being blocked by cinder, individually be cleared up.
Content of the invention
The goal of the invention of the present invention is to overcome the gas connecting leg system that existing gas extraction hole tube valve is present at present to connect
Connect very inconvenient, system when single gas drainage pipe is blocked by cinder, cannot be disconnected, the defect of independent cleaning is carried out, so as to realize
A kind of easily the gas connecting leg system of different angles can be connected together, and easily disconnect the gas drainage under suction of single blocking
Pipe and the connection of whole gas drainage system, and the gas discharge in mine hole angle self adaptation dredged by the single hole to blocking
Node valve can be dredged.
For achieving the above object, the technical scheme is that：A kind of gas discharge in mine hole angle self adaptation
Node valve can be dredged, including valve body and the valve element that can rotate in valve inner, the valve body become T-shaped, and three of the valve body open
Mouth is respectively fluid intake, fluid issuing and dredge outlet, and fluid intake is conllinear with dredge outlet, and fluid intake is become with fluid issuing
Right angle is arranged；T-shaped intercommunicating porosity is offered in the valve element, and the T-shaped intercommunicating porosity front end on valve element corresponds to fluid intake, T-shaped intercommunication
Hole lower end corresponds to fluid issuing, and T-shaped intercommunicating porosity rear end corresponds to dredge outlet；The valve element corresponds to dredge outlet side, and detachably cooperation sets
Valve body switch sealing mechanism is equipped with, the valve body switch sealing mechanism can drive Spool rotating, so as to open or valve body；
The valve body fluid port of export is provided with and communicated with the flexible tubular structures of angle adjustable.
Used as the preferred technical solution of the present invention, the valve body switch sealing mechanism includes to rotate sprue, and the valve element is leaned on
Nearly rotation sprue side offers interior six sides groove, and rotation sprue is offered and six side's groove fit in valve element near spool end
Outer hexagonal structure, is provided with spanner mating groove and loading and unloading capacity on the end face for rotating the opposite end that sprue opens up outer hexagonal structure
Button, and the valve end of dredge outlet offers locating slot, is equipped with rotation sprue locating piece in the locating slot.
Used as the preferred technical solution of the present invention, the rotation sprue center is offered and is connected with the T-shaped intercommunicating porosity of valve element
Gas density measured hole, and at the aperture of gas density measured hole, be provided with switchable measured hole closure.
As the preferred technical solution of the present invention, it is provided with the end face edge at valve body dredge outlet end and indicates valve body folding journey
The graduation mark of degree, the rotation sprue is arranged on the end face of spanner mating groove one end and is provided with arrow.
As the preferred technical solution of the present invention, rotate and be additionally provided between sprue lateral wall and valve body dredge outlet medial wall
O-ring seal, increases the sealing property between rotation sprue and valve body.
As the preferred technical solution of the present invention, at the valve body fluid outlet inside wall and the cooperation of valve element bottom, valve is provided with
Core sealing ring, increases the sealing property of valve body.
Used as the preferred technical solution of the present invention, the flexible tubular structures include the screw thread spring bone with valve body molding
Frame and the encapsulated layer of elastoplast, the encapsulated layer of the elastoplast and screw thread spring skeleton secondary injection molding.
Used as the preferred technical solution of the present invention, the flexible tubular structures can with the valve body fluid port of export by helicitic texture
Dismounting connection, and flexible tubular structures include screw thread spring skeleton and the encapsulated layer of elastoplast, the encapsulated layer of the elastoplast and spiral shell
Bellows spring skeleton secondary injection molding.
The gas discharge in mine hole angle self adaptation of the present invention can dredge the work process of node valve：
When certain gas extraction hole is blocked by coal dust, can be gone out with rotary valve switch seal mechanism cut-out fluid intake and fluid
Mouthful, so as to close the node valve dredged, cut off connecting for this gas extraction hole and whole gas pipeline system herein, dredging this
During the gas extraction hole of blocking, normal work and the concentration of whole gas drainage system would not be affected.
Next the gas extraction hole for blocking is dredged, rotation sprue locating piece is removed, is inserted in using specific purpose tool
Loading and unloading capacity takes off out rotation sprue, then valve element and valve body form the passage in straight-through gas drainage pipe, inserts dredging tool pair
Block part in gas drainage pipe is dredged, and after the completion of dredging, then rotation sprue is reinstalled, is finally loaded onto rotation sprue fixed
Position block is fixed, and completes dredging.Rotation sprue is turned by specific purpose tool, rotation sprue band movable valve plug recloses fluid and enters
Mouth and fluid issuing, recover normal work.
The gas discharge in mine hole angle self adaptation of the present invention can dredge the beneficial effect of node valve：
1. the gas discharge in mine hole angle self adaptation of the present invention can dredge node valve, can very easily disconnect single gas
Extraction hole is connected with whole gas drainage system, even if dredging in the single gas extraction hole to blocking, also will not shadow
The normal work and concentration of the whole gas drainage system of sound.
2. the gas discharge in mine hole angle self adaptation of the present invention can dredge node valve, and the connection of the valve body fluid port of export sets
The flexible tubular structures of angle adjustable are equipped with, this structure can be along perpendicular to the valve body longitudinal axis between node valve entrance and exit
Automatically the deformation between adapting to 30 degree in the range of 360 degree.In the case of ensureing that gas connecting leg system level is fixed, it is adapted to not
With flexible connection during gas extraction hole bore angle difference and between horizontal connecting leg system, and later stage coal seam change can be adapted to automatically
The angle change at gas drainage under suction node and small length change that shape causes, are prevented and are led to using general ball valve, three
Connect the easy dislocation for producing, cracking, gas leak phenomenon at node.
3. the gas discharge in mine hole angle self adaptation of the present invention can dredge node valve, be designed with gas on rotation sprue
Measurement of concetration hole, gas density measured hole is connected with node valve inlet, workman can adjusting spool opening angle, a frontier inspection
The gas density that surveys in gas drainage pipe, closes gas density measured hole with measured hole closure after the completion of regulation.Even if working as valve
The gas density of gas drainage under suction in the hole when door is completely closed, equally can be detected by gas density measured hole.
4. the gas discharge in mine hole angle self adaptation of the present invention can dredge node valve, and cost of parts is close to general plastic
Pellet valve, its function can replace a plastic three-way, plastics pipe plug, ball valve made of plastic, one section of skeleton corrugated flexible hose
The function of adding 3 sections of connection short tubes just complete with direct 5 parts of plastics, structure more optimizes, and dredging cost is further
Reduce.
Description of the drawings
Fig. 1 is the closed mode side structure schematic view that gas discharge in mine hole angle self adaptation can dredge node valve；
Fig. 2 is the cross section structure diagram of A-A in Fig. 1；
Fig. 3 is the open mode side structure schematic view that gas discharge in mine hole angle self adaptation can dredge node valve；
Fig. 4 is the cross section structure diagram of B-B in Fig. 3；
Fig. 5 be gas discharge in mine hole angle self adaptation can dredge node valve unload rotation sprue rear side viewing structural representation；
Fig. 6 is the cross section structure diagram of C-C in Fig. 5；
Fig. 7 is the structural representation of flexible tubular structures in embodiment 1；
Fig. 8 is the structural representation of flexible tubular structures in embodiment 2.
Referring to Fig. 1-8：1- valve body, 101- fluid intake, 102- fluid issuing, 103- dredge outlet, 2- valve element, six in 201-
Square groove, 3- valve body switch sealing mechanism, 301- rotates sprue, 302- spanner mating groove, 303- loading and unloading capacity button, 304- rotation
Sprue locating piece, 4- flexible tubular structures, 401- screw thread spring skeleton, 402- plastic, rubber-coating layer, 5- gas density measured hole, 6- is surveyed
Metering-orifice closure, 7- graduation mark, 8- arrow, 9-O type sealing ring, 10- valve core seal ring, 11- helicitic texture.
Specific embodiment
The below in conjunction with the accompanying drawings and by specific embodiment gas discharge in mine hole angle self adaptation to the present invention
Node valve can be dredged and do more detailed description.
Embodiment 1：
The gas discharge in mine hole angle self adaptation of the present invention can dredge node valve, can revolve including valve body 1 and in valve inner
The valve element 2 for turning, 1 one-tenth of the valve body is T-shaped, and three openings of the valve body 1 are respectively fluid intake 101, fluid issuing 102 and dredge
Port 103, and fluid intake 101 is conllinear with dredge outlet 103, fluid intake 101 and the setting at a right angle of fluid issuing 102；Described
T-shaped intercommunicating porosity is offered in valve element 2, the T-shaped intercommunicating porosity front end on valve element 2 corresponds to fluid intake 101, T-shaped intercommunicating porosity lower end pair
Fluid issuing 102 is answered, T-shaped intercommunicating porosity rear end corresponds to dredge outlet 103；The valve element 2 corresponds to 103 side of dredge outlet and detachably coordinates
Valve body switch sealing mechanism 3 is provided with, the valve body switch sealing mechanism 3 includes sprue 301 is rotated, and the valve element 2 is near rotation
Turn 301 side of sprue and interior six sides groove 201 is offered, rotation sprue 301 is offered and six side's groove in valve element near 2 end of valve element
The 201 outer hexagonal structures for coordinating, are provided with spanner mating groove on the end face for rotating the opposite end that sprue 301 opens up outer hexagonal structure
302 and loading and unloading capacity button 303, and 1 end of valve body of dredge outlet 103 offers locating slot, is equipped with the locating slot
Rotation sprue locating piece 304；1 fluid issuing of the valve body, 102 end is provided with and communicated with the flexible tubular structures 4 of angle adjustable, described
Flexible tubular structures 4 include and the integrally formed screw thread spring skeleton 401 of valve body 1 and the encapsulated layer 402 of elastoplast, the elasticity modeling
Expect encapsulated layer 402 and 401 secondary injection molding of screw thread spring skeleton.
Rotation 301 center of sprue offers the gas density measured hole 5 for connecting with the T-shaped intercommunicating porosity of valve element 2, and
Switchable measured hole closure 6 is provided with the aperture of gas density measured hole 5.
The graduation mark 7 for indicating 1 folding degree of valve body, the rotation is provided with the end face edge at 103 end of valve body dredge outlet
Sprue 301 is arranged on the end face of 302 one end of spanner mating groove and is provided with arrow 8.
O-ring seal 9 is additionally provided between rotation 301 lateral wall of sprue and 103 medial wall of valve body dredge outlet, increases rotation
Sealing property between sprue 301 and valve body 1.
Valve core seal ring 10 is provided with 102 inwalls of the valve body fluid outlet and 2 bottom cooperation of valve element, increases valve body 1
Sealing property.
Embodiment 2：
Same as Example 1 is not repeating, and difference is：Flexible tubular structures 4 are by helicitic texture 11 and valve body fluid
Export 102 ends to be detachably connected, and flexible tubular structures 4 include screw thread spring skeleton 401 and the encapsulated layer 402 of elastoplast, described
The encapsulated layer 402 of elastoplast and 401 secondary injection molding of screw thread spring skeleton.
The schematic specific embodiment of the present invention is the foregoing is only, the scope of the present invention is not limited to, any
Equivalent variations and modification that those skilled in the art is made on the premise of without departing from present inventive concept and principle, all should belong to
In the scope of protection of the invention.
Claims (8)
1. a kind of gas discharge in mine hole angle self adaptation can dredge node valve, including valve body and can valve inner rotation
Valve element, it is characterised in that：The valve body becomes T-shaped, and three openings of the valve body are respectively fluid intake, fluid issuing and dredging
Mouthful, and fluid intake and dredge outlet are conllinear, fluid intake and fluid issuing setting at a right angle；Offer in the valve element T-shaped mutual
Through hole, the T-shaped intercommunicating porosity front end on valve element corresponds to fluid intake, and T-shaped intercommunicating porosity lower end corresponds to fluid issuing, after T-shaped intercommunicating porosity
The corresponding dredge outlet in end；The valve element corresponds to dredge outlet side and is detachably equipped with valve body switch sealing mechanism, the valve body
Switch seal mechanism can drive Spool rotating, so as to open or valve body；The valve body fluid port of export is provided with and communicated with
The flexible tubular structures of angle adjustable.
2. angle self adaptation in gas discharge in mine hole according to claim 1 can dredge node valve, it is characterised in that：Institute
Stating valve body switch sealing mechanism includes to rotate sprue, and the valve element offers interior six sides groove near rotation sprue side, rotation
Sprue offers the outer hexagonal structure with six side's groove fit in valve element near spool end, and rotation sprue opens up outer hexagonal structure
Spanner mating groove and loading and unloading capacity button is provided with the end face of opposite end, and the valve end of dredge outlet offers locating slot, institute
State in locating slot and be equipped with rotation sprue locating piece.
3. angle self adaptation in gas discharge in mine hole according to claim 2 can dredge node valve, it is characterised in that：Institute
State rotation sprue center and offer the gas density measured hole for connecting with the T-shaped intercommunicating porosity of valve element, and gas density measured hole
Switchable measured hole closure is provided with aperture.
4. the gas discharge in mine hole angle self adaptation according to Claims 2 or 3 can dredge node valve, and its feature exists
In：The graduation mark for indicating valve body folding degree is provided with the end face edge at valve body dredge outlet end, and the rotation sprue is arranged and pulled
Arrow is provided with the end face of handss mating groove one end.
5. angle self adaptation in gas discharge in mine hole according to claim 4 can dredge node valve, it is characterised in that：Rotation
Turn between sprue lateral wall and valve body dredge outlet medial wall and be additionally provided with O-ring seal.
6. angle self adaptation in gas discharge in mine hole according to claim 1 can dredge node valve, it is characterised in that：Institute
State at valve body fluid outlet inside wall and the cooperation of valve element bottom and be provided with valve core seal ring.
7. angle self adaptation in gas discharge in mine hole according to claim 1 can dredge node valve, it is characterised in that：Institute
Stating flexible tubular structures includes the screw thread spring skeleton with valve body molding and the encapsulated layer of elastoplast, and the elastoplast is encapsulated
Layer and screw thread spring skeleton secondary injection molding.
8. angle self adaptation in gas discharge in mine hole according to claim 1 can dredge node valve, it is characterised in that：Institute
State flexible tubular structures to be detachably connected with the valve body fluid port of export by helicitic texture, and flexible tubular structures include screw thread spring bone
Frame and the encapsulated layer of elastoplast, the encapsulated layer of the elastoplast and screw thread spring skeleton secondary injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928651.6A CN106439087B (en) | 2016-10-31 | 2016-10-31 | A kind of gas discharge in mine hole angle can adaptively dredge node valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928651.6A CN106439087B (en) | 2016-10-31 | 2016-10-31 | A kind of gas discharge in mine hole angle can adaptively dredge node valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106439087A true CN106439087A (en) | 2017-02-22 |
| CN106439087B CN106439087B (en) | 2018-11-20 |
Family
ID=58177267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610928651.6A Active CN106439087B (en) | 2016-10-31 | 2016-10-31 | A kind of gas discharge in mine hole angle can adaptively dredge node valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106439087B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449019Y (en) * | 2000-10-30 | 2001-09-19 | 宝山钢铁股份有限公司 | Ball shaped discharge valve |
| US7793679B2 (en) * | 2005-08-12 | 2010-09-14 | A.O. Smith Corporation | Drain valve |
| CN201651386U (en) * | 2010-04-28 | 2010-11-24 | 晋城凤凰实业有限责任公司 | Underground gas extraction terminal pipe control valve for coal mines |
| CN101975078A (en) * | 2010-10-11 | 2011-02-16 | 河南理工大学 | Gas extraction drilling coupling device and installation and use method thereof |
| CN102128048A (en) * | 2011-04-26 | 2011-07-20 | 张红 | Crossheading gas draining, fixing and connecting system for highly gassy mine |
| CN104390027A (en) * | 2014-10-30 | 2015-03-04 | 菲时特集团股份有限公司 | Angular connecting valve |
| CN104696540A (en) * | 2014-11-24 | 2015-06-10 | 宁波志清实业有限公司 | Combined type ball valve provided with corrugated pipe |
| CN105156709A (en) * | 2015-09-13 | 2015-12-16 | 苏州市燃气设备阀门制造有限公司 | Gas vertical pipe low-torque angle valve |
| CN105156821A (en) * | 2015-10-09 | 2015-12-16 | 吴涛 | Rotary sealed pipe elbow |
| CN205401794U (en) * | 2016-02-26 | 2016-07-27 | 浙江奕富铜业有限公司 | Right angle ball valve |
| CN206175710U (en) * | 2016-10-31 | 2017-05-17 | 张培 | Colliery for gas drainage hole angle self -adaptation can dredge node valve |
-
2016
- 2016-10-31 CN CN201610928651.6A patent/CN106439087B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449019Y (en) * | 2000-10-30 | 2001-09-19 | 宝山钢铁股份有限公司 | Ball shaped discharge valve |
| US7793679B2 (en) * | 2005-08-12 | 2010-09-14 | A.O. Smith Corporation | Drain valve |
| CN201651386U (en) * | 2010-04-28 | 2010-11-24 | 晋城凤凰实业有限责任公司 | Underground gas extraction terminal pipe control valve for coal mines |
| CN101975078A (en) * | 2010-10-11 | 2011-02-16 | 河南理工大学 | Gas extraction drilling coupling device and installation and use method thereof |
| CN102128048A (en) * | 2011-04-26 | 2011-07-20 | 张红 | Crossheading gas draining, fixing and connecting system for highly gassy mine |
| CN104390027A (en) * | 2014-10-30 | 2015-03-04 | 菲时特集团股份有限公司 | Angular connecting valve |
| CN104696540A (en) * | 2014-11-24 | 2015-06-10 | 宁波志清实业有限公司 | Combined type ball valve provided with corrugated pipe |
| CN105156709A (en) * | 2015-09-13 | 2015-12-16 | 苏州市燃气设备阀门制造有限公司 | Gas vertical pipe low-torque angle valve |
| CN105156821A (en) * | 2015-10-09 | 2015-12-16 | 吴涛 | Rotary sealed pipe elbow |
| CN205401794U (en) * | 2016-02-26 | 2016-07-27 | 浙江奕富铜业有限公司 | Right angle ball valve |
| CN206175710U (en) * | 2016-10-31 | 2017-05-17 | 张培 | Colliery for gas drainage hole angle self -adaptation can dredge node valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106439087B (en) | 2018-11-20 |
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Effective date of registration: 20231222 Address after: No. 1 Bizhong Road, Bihu Town, Liandu District, Lishui City, Zhejiang Province, 323000 Patentee after: Zhejiang Zhongyuan Valve Co.,Ltd. Address before: 454002 Building 7, No. 26, Xinyuan District, Jiefang Middle Road, Shanyang District, Jiaozuo City, Henan Province Patentee before: Zhang Pei |
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