CN110645387A - High-lift differential pressure unpowered pump air valve - Google Patents
High-lift differential pressure unpowered pump air valve Download PDFInfo
- Publication number
- CN110645387A CN110645387A CN201910793805.9A CN201910793805A CN110645387A CN 110645387 A CN110645387 A CN 110645387A CN 201910793805 A CN201910793805 A CN 201910793805A CN 110645387 A CN110645387 A CN 110645387A
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- seat
- valve
- fixedly connected
- adjusting
- overflow
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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
- 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
- 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
- F16K17/0486—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 mechanical 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a high-lift differential pressure unpowered pump air valve, which comprises a valve body, an overflow pipe, a valve seat, an exhaust funnel, a top seat, an adjusting seat and an adjusting screw rod, wherein the upper part of the valve body is provided with an air chamber, the bottom of the air chamber is provided with an overflow hole communicated with an inner cavity of the valve body, an elastic diaphragm is arranged in the air chamber, the valve seat is fixedly connected in a fixed sleeve, the center of the upper surface of a bottom plate of the valve seat is fixedly connected with a valve core, the exhaust funnel is provided with an exhaust hole, the top seat is connected with the exhaust funnel through the adjusting cylinder, the bottom of the adjusting seat is fixedly connected with a sealing plunger, the bottom surface of the sealing plunger is fixedly connected with an iron sheet, and an adjusting spring is fixedly connected between the iron sheet and a connecting seat. Thereby playing the role of pressure relief.
Description
Technical Field
The invention relates to the technical field of air valves, in particular to a high-lift differential pressure unpowered pump air valve.
Background
The unpowered pump is a device which utilizes the flowing of water to drive the impeller to pump water to other places without consuming energy, the unpowered pump is widely applied to water supply and drainage engineering in water conservancy and municipal industries, and the high-lift differential pressure of the fire-fighting lance is realized through the unpowered pump.
In long-distance, high-lift and large-flow water supply engineering, the hydraulic impact phenomenon that the water flow pressure in the pipeline is increased or reduced rapidly due to rapid change of the flow speed in the pressure pipeline is called as a water hammer phenomenon, if air in the pipeline cannot be discharged in time, the water hammer phenomenon is aggravated, and the pipeline can be broken by expansion or the impeller of the unpowered pump can be broken in serious cases.
In long distance, high lift, large-traffic water supply engineering, because the rapid change of velocity of flow among the pressure pipeline, the pressure of rivers also can rapid change, when rivers pressure was too big, if can not carry out timely pressure release, also can lead to the pipeline to be broken by rising, causes incident and great economic loss.
Disclosure of Invention
In order to solve the problems, the invention provides a high-lift differential pressure unpowered pump air valve which is realized by the following technical scheme.
A high-lift differential pressure unpowered pump air valve comprises a valve body, an overflow pipe, a valve seat, an exhaust funnel, a top seat, an adjusting seat and an adjusting screw rod, wherein an air chamber is arranged at the upper part of the valve body, an overflow hole communicated with an inner cavity of the valve body is formed in the bottom of the air chamber, an elastic diaphragm is arranged in the air chamber, a connecting seat is fixedly connected to the upper surface of the elastic diaphragm, and a fixing sleeve is fixedly connected to the lower part of the valve body; the overflow pipe is fixedly connected to an integrated structure of the connecting seat and the elastic diaphragm, the bottom of the overflow pipe is fixedly connected with an overflow seat, the inner cavity of the overflow seat is in a round table shape, the small end of the inner cavity of the overflow seat faces upwards, and the size of the small end of the inner cavity of the overflow seat is equal to the size of the inner diameter of the overflow pipe; the valve seat is fixedly connected in the fixed sleeve, the center of the upper surface of the bottom plate of the valve seat is fixedly connected with a valve core, the valve core and the overflow pipe are coaxially arranged, and the top of the valve core extends into the air chamber; the exhaust funnel is fixedly connected to the top of the valve body and covers the air chamber in the valve body, and an exhaust hole is formed in the exhaust funnel; the top seat is of a cylindrical cavity structure with an opening at the bottom, is arranged at the upper part of the exhaust funnel and is coaxial with the exhaust funnel, and is connected with the exhaust funnel through an adjusting cylinder; the adjusting seat is connected in the adjusting cylinder in a sliding manner, the bottom of the adjusting seat is fixedly connected with a sealing plunger, the sealing plunger is connected in the exhaust cylinder in a sliding manner, the bottom surface of the sealing plunger is fixedly connected with an iron sheet, and an adjusting spring is fixedly connected between the iron sheet and the connecting seat; the bottom of the adjusting screw rod is rotatably connected with the top surface of the adjusting seat, the adjusting screw rod is further meshed with the top plate of the top seat, and the top of the adjusting screw rod extends out of the top seat and is fixedly connected with an adjusting knob.
Furthermore, the two sides of the valve body are fixedly connected and communicated with a communicating pipe.
Furthermore, the left communicating pipe and the right communicating pipe are respectively connected with a liquid inlet pipeline and a liquid outlet pipeline through flanges.
Furthermore, the size of the valve core is larger than the inner diameter of the overflow pipe, and the size of the valve core is smaller than the size of the large end of the inner cavity of the overflow seat.
Furthermore, a lifting plate is connected in the valve seat in a sliding mode, a return spring is fixedly connected between the bottom surface of the lifting plate and the upper surface of the bottom plate of the valve seat, and the valve core is fixedly connected to the center of the upper surface of the lifting plate.
Furthermore, the sealing plunger is made of rubber materials and is in interference fit with the exhaust funnel.
Furthermore, a bearing seat is fixedly connected to the center of the top surface of the adjusting seat, and the bottom of the adjusting screw is rotatably connected with the bearing seat.
Furthermore, the lower surface circumference of adjusting the seat evenly is rigid connected with the guide bar, and the top surface of aiutage is equipped with the direction slide opening with guide bar sliding connection.
The pressure relief device has the advantages that the structure is novel, the function is practical, when water flow in a pipeline where the pressure relief device is located flows, and in an initial state, more air is contained in the hollow pipe, the flowing water flow compresses the air to increase the pressure of the air, the air enters the air chamber through the overflow hole and jacks up the diaphragm, the overflow pipe is opened, the air is discharged through the overflow pipe and the exhaust hole, so that the purpose of discharging the air is achieved, in the process of stably running and conveying the water flow, the connecting seat and the elastic diaphragm are pressed down by the adjusting spring in a normal state, the valve core enters the overflow seat to close the overflow hole, and when the flow speed of the water flow is too high, the elastic diaphragm is jacked up by the pressure of the water flow, so that.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive labor.
FIG. 1: the invention relates to a structural schematic diagram of an air valve of a high-lift differential pressure unpowered pump;
FIG. 2: FIG. 1 shows a close-up view at A;
FIG. 3: the structure of the overflow pipe is schematically shown.
The reference numbers are as follows:
1. the valve comprises a valve body, 101, an air chamber, 102, overflow holes, 103, an elastic diaphragm, 104, a connecting seat, 105, a fixed sleeve, 106, a communicating pipe, 107 and a flange;
2. an overflow pipe 201 and an overflow base;
3. a valve seat 301, a valve core 302, a lifting plate 303 and a return spring;
4. an exhaust cylinder 401 and an exhaust hole;
5. a top seat 501, an adjusting cylinder;
6. the device comprises an adjusting seat 601, a sealing plunger 602, an iron sheet 603, an adjusting spring 604, a bearing seat 605, a guide rod 606 and a guide sliding hole;
7. adjusting screw 701, adjust knob.
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.
As shown in fig. 1-3, the high-lift differential pressure unpowered pump air valve comprises a valve body 1, an overflow pipe 2, a valve seat 3, an exhaust funnel 4, a top seat 5, an adjusting seat 6 and an adjusting screw 7, wherein the upper part of the valve body 1 is provided with an air chamber 101, the bottom of the air chamber 101 is provided with an overflow hole 102 communicated with the inner cavity of the valve body 1, an elastic diaphragm 103 is arranged in the air chamber 101, the upper surface of the elastic diaphragm 103 is fixedly connected with a connecting seat 104, and the lower part of the valve body 1 is also fixedly connected with a fixing sleeve 105; the overflow pipe 2 is fixedly connected to an integrated structure of the connecting seat 104 and the elastic diaphragm 103, the bottom of the overflow pipe 2 is fixedly connected with an overflow seat 201, the inner cavity of the overflow seat 201 is in a round table shape, the small end of the inner cavity of the overflow seat 201 faces upwards, and the size of the small end of the inner cavity of the overflow seat 201 is equal to the size of the inner diameter of the overflow pipe 2; the valve seat 3 is fixedly connected in the fixed sleeve 105, the center of the upper surface of the bottom plate of the valve seat 3 is fixedly connected with the valve core 301, the valve core 301 and the overflow pipe 2 are coaxially arranged, and the top of the valve core 301 extends into the air chamber 101; the exhaust funnel 4 is fixedly connected to the top of the valve body 1 and covers the air chamber 101 in the exhaust funnel 4, and an exhaust hole 401 is formed in the exhaust funnel 4; the top seat 5 is a cylindrical cavity structure with an open bottom, the top seat 5 is arranged at the upper part of the exhaust funnel 4 and is coaxial with the exhaust funnel 4, and the top seat 5 is connected with the exhaust funnel 4 through an adjusting cylinder 501; the adjusting seat 6 is connected in the adjusting cylinder 501 in a sliding manner, the bottom of the adjusting seat 6 is fixedly connected with a sealing plunger 601, the sealing plunger 601 is connected in the exhaust cylinder 4 in a sliding manner, the bottom surface of the sealing plunger 601 is fixedly connected with an iron sheet 602, and an adjusting spring 603 is fixedly connected between the iron sheet 602 and the connecting seat 104; the bottom of the adjusting screw 7 is rotatably connected with the top surface of the adjusting seat 6, the adjusting screw 7 is also meshed with the top plate of the top seat 5, and the top of the adjusting screw 7 extends out of the top seat 5 and is fixedly connected with an adjusting knob 701.
Preferably, the communicating tube 106 is fixedly connected and communicated with two sides of the valve body 1.
Preferably, the left and right communicating pipes 106 are connected to a liquid inlet pipe and a liquid outlet pipe respectively through flanges 107.
Preferably, the size of the valve core 301 is larger than the inner diameter of the overflow pipe 2, and the size of the valve core 301 is smaller than the size of the large end of the inner cavity of the overflow seat 201.
Preferably, a lifting plate 302 is slidably connected in the valve seat 3, a return spring 303 is fixedly connected between the bottom surface of the lifting plate 302 and the upper surface of the bottom plate of the valve seat 3, and the valve core 301 is fixedly connected to the center of the upper surface of the lifting plate 302.
Preferably, the sealing plunger 601 is made of rubber material, and the sealing plunger 601 is in interference fit with the exhaust cylinder 4.
Preferably, a bearing seat 604 is fixedly connected to the center of the top surface of the adjusting seat 6, and the bottom of the adjusting screw 7 is rotatably connected to the bearing seat 604.
Preferably, the lower surface of the adjusting seat 6 is uniformly and fixedly connected with guide rods 605 in the circumferential direction, and the top surface of the exhaust funnel 4 is provided with guide sliding holes 606 slidably connected with the guide rods 605.
The working principle is as follows:
when in use, the two communicating pipes 106 are respectively connected with an external liquid inlet pipeline and an external liquid outlet pipeline through the flanges 107.
In the initial state, the water flow pipeline is an empty pipe, a large amount of air exists in the empty pipe, when water flows in the water flow pipeline, the air in the empty pipe is compressed, so that the pressure of the air is increased, the air enters the air chamber 101 through the overflow hole 102, the integrated structure of the elastic diaphragm 103 and the connecting seat 104 is jacked up by the excessive air pressure, so that the overflow seat 201 is separated from the valve core 301, the overflow pipe 2 is opened, and the air in the air chamber 101 enters the exhaust funnel 4 through the overflow pipe 2 and is exhausted through the exhaust hole 401.
The device is at the in-process of steady transport fluid, and under normal condition, regulating spring 603 pushes down the body structure of connecting seat 104 and elastic diaphragm 103, and case 301 gets into overflow seat 201 and seals overflow pipe 2, and the fluid is normal transport in the pipeline, and when the fluid pressure in the pipeline was unusual increase, elastic diaphragm 103 jack-up, the fluid flowed out through overflow hole 102, overflow pipe 2 and blast pipe, carried out the operation of pressure release.
Rotation through adjust knob 701 can drive adjusting screw 7 and rotate, and adjusting screw 7 and footstock 5 meshing rise or descend during its rotation to the rising or the decline of drive regulation seat 6, thereby change the volume that adjusting spring 603 compressed, the size that the reaction of adjusting spring 603 acted on connecting seat 104 and elastic diaphragm 103 also can be changed, thereby adjust the regulation of earial drainage pressure size.
When the pressing angle of the elastic diaphragm 103 is large, the integrated structure of the valve body 301 and the lifting plate 302 descends, and when the elastic diaphragm 103 is lifted up, the return spring 303 returns the valve body 301.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a high-lift pressure differential does not have power pump air valve which characterized in that: the air-conditioning valve comprises a valve body, an overflow pipe, a valve seat, an exhaust funnel, a top seat, an adjusting seat and an adjusting screw rod, wherein an air chamber is arranged at the upper part of the valve body, an overflow hole communicated with an inner cavity of the valve body is formed in the bottom of the air chamber, an elastic diaphragm is arranged in the air chamber, the upper surface of the elastic diaphragm is fixedly connected with a connecting seat, and a fixing sleeve is fixedly connected to the lower part of the valve body; the overflow pipe is fixedly connected to an integrated structure of the connecting seat and the elastic diaphragm, the bottom of the overflow pipe is fixedly connected with an overflow seat, the inner cavity of the overflow seat is in a round table shape, the small end of the inner cavity of the overflow seat faces upwards, and the size of the small end of the inner cavity of the overflow seat is equal to the size of the inner diameter of the overflow pipe; the valve seat is fixedly connected in the fixed sleeve, the center of the upper surface of the bottom plate of the valve seat is fixedly connected with a valve core, the valve core and the overflow pipe are coaxially arranged, and the top of the valve core extends into the air chamber; the exhaust funnel is fixedly connected to the top of the valve body and covers the air chamber in the valve body, and an exhaust hole is formed in the exhaust funnel; the top seat is of a cylindrical cavity structure with an opening at the bottom, is arranged at the upper part of the exhaust funnel and is coaxial with the exhaust funnel, and is connected with the exhaust funnel through an adjusting cylinder; the adjusting seat is connected in the adjusting cylinder in a sliding manner, the bottom of the adjusting seat is fixedly connected with a sealing plunger, the sealing plunger is connected in the exhaust cylinder in a sliding manner, the bottom surface of the sealing plunger is fixedly connected with an iron sheet, and an adjusting spring is fixedly connected between the iron sheet and the connecting seat; the bottom of the adjusting screw rod is rotatably connected with the top surface of the adjusting seat, the adjusting screw rod is further meshed with the top plate of the top seat, and the top of the adjusting screw rod extends out of the top seat and is fixedly connected with an adjusting knob.
2. The high head differential pressure unpowered pump air valve of claim 1, wherein: and communicating pipes are fixedly connected and communicated with the two sides of the valve body.
3. The high head differential pressure unpowered pump air valve of claim 2, wherein: the left communicating pipe and the right communicating pipe are respectively connected with a liquid inlet pipeline and a liquid outlet pipeline through flanges.
4. The high head differential pressure unpowered pump air valve of claim 1, wherein: the size of the valve core is larger than the inner diameter of the overflow pipe, and the size of the valve core is smaller than the size of the big end of the inner cavity of the overflow seat.
5. The high head differential pressure unpowered pump air valve of claim 1, wherein: the valve seat is connected with a lifting plate in a sliding mode, a return spring is fixedly connected between the bottom surface of the lifting plate and the upper surface of the bottom plate of the valve seat, and the valve core is fixedly connected to the center of the upper surface of the lifting plate.
6. The high head differential pressure unpowered pump air valve of claim 1, wherein: the sealing plunger is made of rubber materials and is in interference fit with the exhaust funnel.
7. The high head differential pressure unpowered pump air valve of claim 1, wherein: the top surface center rigid coupling of adjusting the seat has the bearing frame, adjusting screw's bottom is connected with the bearing frame rotation.
8. The high head differential pressure unpowered pump air valve of claim 1, wherein: the lower surface circumference of adjusting the seat evenly is rigid coupling has the guide bar, and the top surface of aiutage is equipped with the direction slide opening with guide bar sliding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793805.9A CN110645387A (en) | 2019-08-27 | 2019-08-27 | High-lift differential pressure unpowered pump air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793805.9A CN110645387A (en) | 2019-08-27 | 2019-08-27 | High-lift differential pressure unpowered pump air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110645387A true CN110645387A (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910793805.9A Pending CN110645387A (en) | 2019-08-27 | 2019-08-27 | High-lift differential pressure unpowered pump air valve |
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| CN (1) | CN110645387A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146196A (en) * | 2020-09-07 | 2020-12-29 | 潘彬夫 | Wind and solar energy air purifier and air purification method |
| CN114233904A (en) * | 2021-12-23 | 2022-03-25 | 南京六合鼎扬制泵有限公司 | Pressure regulating type safety valve for emulsion pump |
| WO2023045174A1 (en) * | 2021-09-22 | 2023-03-30 | 台州天扬机电有限公司 | Autonomous pressure relief high-protection pressure tank for water pump |
| CN117358442A (en) * | 2023-12-07 | 2024-01-09 | 威海市正昊矿山设备有限公司 | High-efficiency cyclone reflux device |
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| JP2005004694A (en) * | 2003-06-16 | 2005-01-06 | Ckd Corp | Pressure-control valve |
| CN101201128A (en) * | 2007-11-14 | 2008-06-18 | 宁波亚德客自动化工业有限公司 | Pressure regulating valve |
| CN201748007U (en) * | 2010-08-24 | 2011-02-16 | 河南航天压力元件有限公司 | Diaphragm-type pressure relief valve |
| CN204025800U (en) * | 2014-06-26 | 2014-12-17 | 华中科技大学无锡研究院 | A kind of two damping One-stage Water Hydraulic Relief Valve |
| CN204201212U (en) * | 2014-11-04 | 2015-03-11 | 浙江百灵气动科技有限公司 | Reduction valve |
| CN204605137U (en) * | 2014-10-22 | 2015-09-02 | 上海富之佳机电设备有限公司 | Screen process press pressure regulation locking device and screen process press |
| CN207229786U (en) * | 2017-08-30 | 2018-04-13 | 宁波市华益气动工程有限公司 | A kind of sensitive pressure reducing valve of overflow |
| CN207673904U (en) * | 2017-11-14 | 2018-07-31 | 上海气动成套公司三分厂 | Pneumatic pressure-release valve |
| CN208442335U (en) * | 2018-06-07 | 2019-01-29 | 长兴远华皮革机械股份有限公司 | A kind of automatic Leather Drum rotational positioning air valve |
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2019
- 2019-08-27 CN CN201910793805.9A patent/CN110645387A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104625A (en) * | 1986-07-04 | 1988-05-11 | Smf国际公司 | Teleoperator |
| JP2005004694A (en) * | 2003-06-16 | 2005-01-06 | Ckd Corp | Pressure-control valve |
| CN101201128A (en) * | 2007-11-14 | 2008-06-18 | 宁波亚德客自动化工业有限公司 | Pressure regulating valve |
| CN201748007U (en) * | 2010-08-24 | 2011-02-16 | 河南航天压力元件有限公司 | Diaphragm-type pressure relief valve |
| CN204025800U (en) * | 2014-06-26 | 2014-12-17 | 华中科技大学无锡研究院 | A kind of two damping One-stage Water Hydraulic Relief Valve |
| CN204605137U (en) * | 2014-10-22 | 2015-09-02 | 上海富之佳机电设备有限公司 | Screen process press pressure regulation locking device and screen process press |
| CN204201212U (en) * | 2014-11-04 | 2015-03-11 | 浙江百灵气动科技有限公司 | Reduction valve |
| CN207229786U (en) * | 2017-08-30 | 2018-04-13 | 宁波市华益气动工程有限公司 | A kind of sensitive pressure reducing valve of overflow |
| CN207673904U (en) * | 2017-11-14 | 2018-07-31 | 上海气动成套公司三分厂 | Pneumatic pressure-release valve |
| CN208442335U (en) * | 2018-06-07 | 2019-01-29 | 长兴远华皮革机械股份有限公司 | A kind of automatic Leather Drum rotational positioning air valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146196A (en) * | 2020-09-07 | 2020-12-29 | 潘彬夫 | Wind and solar energy air purifier and air purification method |
| CN112146196B (en) * | 2020-09-07 | 2022-12-13 | 江苏拓丰环保科技有限公司 | Wind and solar energy air purifier and air purification method |
| WO2023045174A1 (en) * | 2021-09-22 | 2023-03-30 | 台州天扬机电有限公司 | Autonomous pressure relief high-protection pressure tank for water pump |
| CN114233904A (en) * | 2021-12-23 | 2022-03-25 | 南京六合鼎扬制泵有限公司 | Pressure regulating type safety valve for emulsion pump |
| CN117358442A (en) * | 2023-12-07 | 2024-01-09 | 威海市正昊矿山设备有限公司 | High-efficiency cyclone reflux device |
| CN117358442B (en) * | 2023-12-07 | 2024-02-23 | 威海市正昊矿山设备有限公司 | High-efficiency cyclone reflux device |
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Application publication date: 20200103 |
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