CN109210230A - A kind of ball check valve - Google Patents
A kind of ball check valve Download PDFInfo
- Publication number
- CN109210230A CN109210230A CN201811116382.9A CN201811116382A CN109210230A CN 109210230 A CN109210230 A CN 109210230A CN 201811116382 A CN201811116382 A CN 201811116382A CN 109210230 A CN109210230 A CN 109210230A
- Authority
- CN
- China
- Prior art keywords
- valve core
- ontology
- ball check
- valve
- sealing ring
- 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.)
- Pending
Links
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
- F16K5/0647—Spindles or actuating means
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of ball check valves, including valve component, spherical valve core and rotating mechanism, spherical valve core is set in valve component, spherical valve core and rotating mechanism are cooperatively connected, valve component includes ontology, connector and plinth, connector and plinth are respectively arranged on the both ends of ontology, and it is fixedly connected with ontology, plinth and connector are connected to ontology, spherical valve core is set to body interior, and spherical valve core and inner body wall are rotatablely connected, and feed pathway is equipped in connector, liquid outlet channel is equipped in plinth, level was equipped with water through-hole in the middle part of spherical valve core.It solves and generallys use ball check valve on underground coal mine fully mechanized mining hydraulic pipeline, due to the relationship of working environment, it is hydraulic very high in hydraulic pipeline, when needing to open ball check valve, since the pressure difference at ball check valve both ends is 35.1MP, the rotating bar for directly pulling ball check valve with hand is relatively elaborate, in some instances it may even be possible to will appear the problem of driving lever is by the case where switch out.
Description
Technical field
The present invention relates to a kind of shut-off valve, specially a kind of ball check valve.
Background technique
Ball check valve is generallyd use on underground coal mine fully mechanized mining hydraulic pipeline, due to the relationship of working environment, hydraulic pipeline
Interior is hydraulic very high, when needing to open ball check valve, since the pressure difference at ball check valve both ends is 35.1MP, directly
It is relatively elaborate to connect the rotating bar for pulling ball check valve with hand, or even will appear the case where driving lever is by switch out, if worked
Occur such case in journey, will affect the progress of work, and is likely to result in huge loss.
Summary of the invention
It is an object of that present invention to provide a kind of ball check valves, mentioned above in the background art in underground coal mine to solve
Ball check valve is generallyd use on fully mechanized mining hydraulic pipeline, it is hydraulic very high in hydraulic pipeline due to the relationship of working environment, when
When needing to open ball check valve, since the pressure difference at ball check valve both ends is 35.1MP, spherical cut-off directly is pulled with hand
The rotating bar of valve is relatively elaborate, in some instances it may even be possible to will appear the problem of driving lever is by the case where switch out.
To achieve the goals above, the present invention use following technological means, a kind of ball check valve, including valve component,
Spherical valve core and rotating mechanism, the spherical valve core are set in valve component, and the spherical valve core and rotating mechanism are cooperatively connected,
The valve component includes ontology, connector and plinth, and the connector and plinth are respectively arranged on the both ends of ontology, and and ontology
It is fixedly connected, the plinth and connector are connected to ontology, and the spherical valve core is set to body interior, and spherical valve core and sheet
Internal wall rotation connection is equipped with feed pathway in the connector, is equipped with liquid outlet channel in the plinth, in the spherical valve core
Portion's level was equipped with water through-hole.
Preferably, the bodies top is equipped with frame, and the frame roof is equipped with cover board, the cover board and the fixed company of frame
It connects, the rotating mechanism is set in frame, and the rotating mechanism includes valve rod, gear and adjusts component, and the valve rod is set vertically
It sets, and is fixedly connected at the top of the lower end of valve rod and spherical valve core, the valve rod upper end and cover board are rotatablely connected, and valve rod and cover board
Between be rotatablely connected by bearing, the gear is fixedly connected with valve rod.
Preferably, it is fixed with spacing shim on valve rod, round pin is provided on ontology, spacing shim and round pin cooperate.
Preferably, seal receptacle is equipped between the valve component and spherical valve core, the seal receptacle includes the first sealing ring
With the second sealing ring, first sealing ring exists close to feed pathway, the second sealing ring close to liquid outlet channel, spherical valve core setting
Between first sealing ring and the second sealing ring.
Preferably, the structure of the first sealing ring and the second sealing ring is identical, and the outside of the first sealing ring is plane, and first is close
The inside of seal is in the conical surface, and plane is bonded with the rear end of connector, the appearance face contact of the conical surface and spherical valve core.When spherical valve core will
When feed pathway and liquid outlet channel are blocked, leakproofness ensure that.
Preferably, the adjusting component includes screw rod, and the screw rod front end is connected with rectangular shaped slider, the screw rod and rectangle
Sliding block rotation connection, the rectangular shaped slider medial surface are equipped with rack gear, and the rack and pinion is cooperatively connected, and the screw rod rear end is solid
Surely it is connected with handwheel, described frame one end is equipped with threaded hole, and the screw rod and threaded hole are cooperatively connected, and the frame other end is equipped with square
Shape through-hole, the rectangular shaped slider are slidably connected with rectangular through-hole.
The invention has the benefit that, to adjust the angle of water through-hole, having served as water through-hole by the rotation of spherical valve core
It when turning to certain position, crosses water through-hole and is connected to feed pathway with liquid outlet channel, the liquid entered from feed pathway can be straight
It connects and enters liquid outlet channel across water through-hole excessively, and flowed out from liquid outlet channel.When needing the rotational angle of regulation ball valve core,
It only needs to rotate handwheel, since handwheel is fixedly connected with screw rod, so driving screw rod that synchronous turn occurs while working as hand wheel rotating
It is dynamic, when screw rod rotates in threaded hole, Forward can occur according to the rotation direction difference of handwheel and move back, the end rotation of screw rod
It is connected with rectangular shaped slider, rectangular slide can be mobile with screw rod, and moves with carry-over bar, rack gear and tooth
Wheel is cooperatively connected, therefore while rack gear movement, will drive the rotation of gear generation clockwise or counterclockwise, after gear rotation i.e.
Spherical valve core can be driven to rotate, the rotational angle of regulation ball valve core be carried out with this, the rotation of screw rod is compared to directly rotation
Relative ease for spherical valve core does not need using very big strength, therefore efficiency can be improved.
Detailed description of the invention
Fig. 1 is a kind of ball check valve main sectional view of the present invention.
Fig. 2 is the left cross-sectional view of adjusting component of the present invention.
Wherein: 1, valve rod；2, gear；3, component is adjusted；31, threaded hole；32, screw rod；33, rectangular shaped slider；34, rectangle is logical
Hole；35, handwheel；5, spherical valve core；6, ontology；61, frame；62, cover board；63, bearing；7, connector；8, plinth；9, it seals
Seat；91, the first sealing ring；92, the second sealing ring；11, feed pathway；13, spacing shim；14, round pin；15, liquid outlet channel.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1 to Figure 2, a kind of ball check valve, including valve component, spherical valve core 5 and rotating mechanism, the ball
Shape spool 5 is set in valve component, and the spherical valve core 5 is cooperatively connected with rotating mechanism, the valve component include ontology 6,
Connector 7 and plinth 8, the connector 7 and plinth 8 are respectively arranged on the both ends of ontology 6, and are fixedly connected with ontology 6, described to connect
Headstock 8 and connector 7 are connected to ontology 6, and the spherical valve core 5 is set to inside ontology 6, and spherical valve core 5 and 6 inner wall of ontology turn
Dynamic connection.Liquid enters in ball check valve from connector 7, and flows out from plinth 8, by controlling the rotation of spherical valve core 5,
To control the circulation or stopping of liquid.
It is equipped with feed pathway 11 in the connector 7, is equipped with liquid outlet channel 15 in the plinth 8, in the spherical valve core 5
Portion's level was equipped with water through-hole.By the rotation of spherical valve core 5, to adjust the angle of water through-hole, water through-hole is served as and has turned to
It when certain position, crosses water through-hole and is connected to feed pathway 11 with liquid outlet channel 15, the liquid entered from feed pathway 11 can be straight
It connects and enters liquid outlet channel 15 across water through-hole excessively, and flowed out from liquid outlet channel 15.
It is equipped with frame 61 at the top of the ontology 6, cover board 62 is equipped at the top of the frame 61, the cover board 62 and frame 61 are solid
Fixed connection, the rotating mechanism are set in frame 61, and the rotating mechanism includes valve rod 1, gear 2 and adjusting component 3, the valve
Bar 1 is vertically arranged, and is fixedly connected at the top of the lower end of valve rod 1 and spherical valve core 5, and 1 upper end of valve rod and the rotation of cover board 62 connect
It connects, and is rotatablely connected between valve rod 1 and cover board 62 by bearing 63, the gear 2 is fixedly connected with valve rod 1, fixed on valve rod 1
There is spacing shim 13, round pin 14 is provided on ontology 6, spacing shim 13 and round pin 14 cooperate.When needing to make spherical valve core 5
When rotating, it is only necessary to so that valve rod 1 rotates, because gear 2 is fixedly connected with valve rod 1, when gear 2 occurs to turn
When dynamic, it can rotate with ovable valve stem 1, change the rotational angle of spherical valve core 5 with this.
Seal receptacle 9 is equipped between the valve component and spherical valve core 5, the seal receptacle 9 includes 91 He of the first sealing ring
Second sealing ring 92, first sealing ring 91 is close to feed pathway 11, and the second sealing ring 91 is close to liquid outlet channel 12, globe valve
Core 5 is arranged between the first sealing ring 91 and the second sealing ring 92, and the first sealing ring 91 is identical with the structure of the second sealing ring 92,
The outside of first sealing ring 91 is plane, and the inside of the first sealing ring 91 is in the conical surface, and plane is bonded with the rear end of connector 7, the conical surface
With the appearance face contact of spherical valve core 5.When spherical valve core 5 blocks feed pathway 11 and liquid outlet channel 15, sealing ensure that
Property.
The adjusting component 3 includes screw rod 32, and 32 front end of screw rod is connected with rectangular shaped slider 33, the screw rod 32 and square
Shape sliding block 33 is rotatablely connected, and 33 medial surface of rectangular shaped slider is equipped with rack gear, and the rack and pinion 2 is cooperatively connected, the silk
32 rear end of bar is fixedly connected with handwheel 35, and described 61 one end of frame is equipped with threaded hole 31, and the screw rod 32 cooperates with threaded hole 31
Connection, 61 other end of frame are equipped with rectangular through-hole 34, and the rectangular shaped slider 33 is slidably connected with rectangular through-hole 35.When needing to adjust
When the rotational angle of spherical valve core 5, it is only necessary to handwheel 35 is rotated, since handwheel 35 is fixedly connected with screw rod 32, so working as handwheel
While 35 rotation, screw rod 32 is driven to rotate synchronously, when screw rod 32 rotates in threaded hole 31, can be turned according to handwheel 35
Dynamic direction difference occurs Forward and moves back, and the end of screw rod 32 is rotatably connected to rectangular shaped slider 33, and rectangular slide 33 can be with silk
Bar 32 it is mobile, and moved with carry-over bar, rack and pinion 2 is cooperatively connected, therefore mobile same of rack gear
When, will drive the rotation of the generation of gear 2 clockwise or counterclockwise, gear 2 can drive spherical valve core 5 to rotate after rotating,
Carry out the rotational angle of regulation ball valve core 5 with this, the rotation of screw rod 32 is relatively light compared to for direct rotation spherical spool 5
Pine does not need using very big strength, therefore efficiency can be improved.
Concrete operating principle and step: liquid enters in ball check valve from connector 7, and flows out from plinth 8, passes through
The rotation for controlling spherical valve core 5, to control the circulation or stopping of liquid, by the rotation of spherical valve core 5, to adjust water through-hole
Angle, when having served as water through-hole and turning to certain position, cross water through-hole and be connected to feed pathway 11 with liquid outlet channel 15, from feed liquor
The liquid that channel 11 enters can enter liquid outlet channel 15 directly through water through-hole excessively, and flow out from liquid outlet channel 15, when need
When spherical valve core 5 being made to rotate, it is only necessary to so that valve rod 1 rotates, because gear 2 is fixedly connected with valve rod 1,
When gear 2 rotates, it can rotate with ovable valve stem 1, change the rotational angle of spherical valve core 5 with this, when needing to adjust
When saving the rotational angle of spherical valve core 5, it is only necessary to handwheel 35 is rotated, since handwheel 35 is fixedly connected with screw rod 32, so working as hand
While 35 rotation of wheel, screw rod 32 is driven to rotate synchronously, it, can be according to handwheel 35 when screw rod 32 rotates in threaded hole 31
Rotation direction difference occurs Forward and moves back, and the end of screw rod 32 is rotatably connected to rectangular shaped slider 33, and rectangular slide 33 can be with
Screw rod 32 it is mobile, and moved with carry-over bar, rack and pinion 2 is cooperatively connected, therefore rack gear is mobile
Meanwhile will drive the rotation of the generation of gear 2 clockwise or counterclockwise, gear 2 can drive spherical valve core 5 to occur to turn after rotating
It is dynamic, the rotational angle of regulation ball valve core 5 is carried out with this, the rotation of screw rod 32 is opposite compared to for direct rotation spherical spool 5
Easily, it does not need using very big strength, therefore efficiency can be improved.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of ball check valve, which is characterized in that including valve component, spherical valve core (5) and rotating mechanism, the globe valve
Core (5) is set in valve component, and the spherical valve core (5) and rotating mechanism are cooperatively connected, and the valve component includes ontology
(6), connector (7) and plinth (8), the connector (7) and plinth (8) are respectively arranged on the both ends of ontology (6), and and ontology
(6) it is fixedly connected, the plinth (8) and connector (7) are connected to ontology (6), and the spherical valve core (5) is set to ontology (6)
Inside, and spherical valve core (5) and ontology (6) inner wall are rotatablely connected, and are equipped with feed pathway (11) in the connector (7), it is described to connect
Liquid outlet channel (15) are equipped in headstock (8), level was equipped with water through-hole in the middle part of the spherical valve core (5).
2. a kind of ball check valve according to claim 1, which is characterized in that be equipped with frame at the top of the ontology (6)
(61), cover board (62) are equipped at the top of the frame (61), the cover board (62) is fixedly connected with frame (61), the rotating mechanism
In frame (61), the rotating mechanism includes valve rod (1), gear (2) and adjusts component (3), and the valve rod (1) sets vertically
It sets, and is fixedly connected at the top of the lower end of valve rod (1) and spherical valve core (5), valve rod (1) upper end and cover board (62) rotation connect
It connects, and is rotatablely connected between valve rod (1) and cover board (62) by bearing (63), the gear (2) is fixedly connected with valve rod (1).
3. a kind of ball check valve according to claim 2, which is characterized in that valve rod is fixed with spacing shim on (1)
(13), it is provided with round pin (14) on ontology (6), spacing shim (13) and round pin (14) cooperate.
4. a kind of ball check valve according to claim 1, which is characterized in that the valve component and spherical valve core (5)
Between be equipped with seal receptacle (9), the seal receptacle (9) include the first sealing ring (91) and the second sealing ring (92), described first is close
Seal (91) is arranged close to liquid outlet channel (12), spherical valve core (5) first close to feed pathway (11), the second sealing ring (91)
Between sealing ring (91) and the second sealing ring (92).
5. a kind of ball check valve according to claim 4, which is characterized in that the first sealing ring (91) and the second sealing ring
(92) structure is identical, and the outside of the first sealing ring (91) is plane, and the inside of the first sealing ring (91) is in the conical surface, plane with connect
The rear end fitting of head (7), the appearance face contact of the conical surface and spherical valve core (5).When spherical valve core (5) by feed pathway (11) and goes out
When liquid channel (15) is blocked, leakproofness ensure that.
6. a kind of ball check valve according to claim 2, which is characterized in that the adjusting component (3) includes screw rod
(32), screw rod (32) front end is connected with rectangular shaped slider (33), and the screw rod (32) and rectangular shaped slider (33) are rotatablely connected, institute
Rectangular shaped slider (33) medial surface is stated equipped with rack gear, the rack and pinion (2) is cooperatively connected, and screw rod (32) rear end is fixed to be connected
It being connected to handwheel (35), described frame (61) one end is equipped with threaded hole (31), and the screw rod (32) and threaded hole (31) are cooperatively connected,
Frame (61) other end is equipped with rectangular through-hole (34), and the rectangular shaped slider (33) is slidably connected with rectangular through-hole (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811116382.9A CN109210230A (en) | 2018-09-25 | 2018-09-25 | A kind of ball check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811116382.9A CN109210230A (en) | 2018-09-25 | 2018-09-25 | A kind of ball check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109210230A true CN109210230A (en) | 2019-01-15 |
Family
ID=64984875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811116382.9A Pending CN109210230A (en) | 2018-09-25 | 2018-09-25 | A kind of ball check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109210230A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657249A (en) * | 2019-10-28 | 2020-01-07 | 武芳 | Stop valve |
| CN110711337A (en) * | 2019-11-08 | 2020-01-21 | 新昌端宗电子信息技术有限公司 | Emergency fire extinguishing device based on intelligent system |
| CN110985739A (en) * | 2019-12-31 | 2020-04-10 | 扬州瀚泰机械有限公司 | Mining spherical stop valve |
| CN112944017A (en) * | 2021-02-24 | 2021-06-11 | 安徽唐兴机械装备有限公司 | Gear rack switch ball valve |
| CN113137514A (en) * | 2021-05-07 | 2021-07-20 | 韶关一本机械设备有限公司 | Sea valve electromechanical static pressure driving device |
| CN113757408A (en) * | 2021-08-24 | 2021-12-07 | 华东矿用设备有限公司 | One-way valve |
| CN116589014A (en) * | 2023-06-26 | 2023-08-15 | 无锡工源环境科技股份有限公司 | Non-blocking adjustable instantaneous energy dissipation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008057675A (en) * | 2006-08-31 | 2008-03-13 | Osaka Gas Co Ltd | Gas cock |
| CN102042436A (en) * | 2010-12-16 | 2011-05-04 | 江苏苏威阀门有限公司 | Gearbox |
| CN202674362U (en) * | 2012-05-16 | 2013-01-16 | 宁波长壁流体动力科技有限公司 | Mass-flow spherical stop valve used under a coal mine |
| CN202852047U (en) * | 2012-09-14 | 2013-04-03 | 杭州艾诺流体控制仪表有限公司 | Bellows sealed ball valve |
-
2018
- 2018-09-25 CN CN201811116382.9A patent/CN109210230A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008057675A (en) * | 2006-08-31 | 2008-03-13 | Osaka Gas Co Ltd | Gas cock |
| CN102042436A (en) * | 2010-12-16 | 2011-05-04 | 江苏苏威阀门有限公司 | Gearbox |
| CN202674362U (en) * | 2012-05-16 | 2013-01-16 | 宁波长壁流体动力科技有限公司 | Mass-flow spherical stop valve used under a coal mine |
| CN202852047U (en) * | 2012-09-14 | 2013-04-03 | 杭州艾诺流体控制仪表有限公司 | Bellows sealed ball valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657249A (en) * | 2019-10-28 | 2020-01-07 | 武芳 | Stop valve |
| CN110711337A (en) * | 2019-11-08 | 2020-01-21 | 新昌端宗电子信息技术有限公司 | Emergency fire extinguishing device based on intelligent system |
| CN110985739A (en) * | 2019-12-31 | 2020-04-10 | 扬州瀚泰机械有限公司 | Mining spherical stop valve |
| CN112944017A (en) * | 2021-02-24 | 2021-06-11 | 安徽唐兴机械装备有限公司 | Gear rack switch ball valve |
| CN113137514A (en) * | 2021-05-07 | 2021-07-20 | 韶关一本机械设备有限公司 | Sea valve electromechanical static pressure driving device |
| CN113757408A (en) * | 2021-08-24 | 2021-12-07 | 华东矿用设备有限公司 | One-way valve |
| CN116589014A (en) * | 2023-06-26 | 2023-08-15 | 无锡工源环境科技股份有限公司 | Non-blocking adjustable instantaneous energy dissipation device |
| CN116589014B (en) * | 2023-06-26 | 2024-02-06 | 无锡工源环境科技股份有限公司 | Non-blocking adjustable instantaneous energy dissipation device |
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Application publication date: 20190115 |