CN111720595A - Valve for gas pipeline - Google Patents
Valve for gas pipeline Download PDFInfo
- Publication number
- CN111720595A CN111720595A CN202010618957.8A CN202010618957A CN111720595A CN 111720595 A CN111720595 A CN 111720595A CN 202010618957 A CN202010618957 A CN 202010618957A CN 111720595 A CN111720595 A CN 111720595A
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- Prior art keywords
- valve
- shell
- pipeline
- outer shell
- pipe according
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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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
- F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
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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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
- F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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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
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a valve for a gas pipeline, which comprises a valve, a detection pipeline connected to the outlet end of the valve and an air pressure detector arranged on the detection pipeline, wherein the inlet end of the valve is connected with a safety buffer pipeline; the valve comprises a first shell, a first connecting flange connected to the first shell, a second connecting flange connected to the second shell, an inner pipe arranged between the first shell and the second shell, a first helical gear sleeved on the inner pipe, a plurality of plugging bulges arranged on the inner wall of the inner pipe, a plurality of mounting holes arranged on the inner pipe, plugging pieces arranged in the mounting holes, a mounting bracket connected to the first shell, a motor arranged on the mounting bracket and an adjusting handle. This valve for gas pipeline has the function of buffering and one-way circulation, can prevent that the pipeline internal gas pressure from changing and causing the damage to the valve when great, also can make the valve close comparatively stable when opening and shutting, and the security is higher.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a valve for a gas pipeline.
Background
Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like.
The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.
The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.
The valve can be controlled by adopting various transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic hydraulic, electrohydraulic, pneumatic hydraulic, spur gear, bevel gear drive and the like; the valve can be operated according to the preset requirement under the action of pressure, temperature or other forms of sensing signals, or can be simply opened or closed without depending on the sensing signals, and the valve can make the opening and closing piece perform lifting, sliding, swinging or rotating motion by depending on a driving or automatic mechanism, so that the size of the flow passage area of the valve can be changed to realize the control function of the valve.
At present, most of common valves adopt a motor or a manual mode to control a plugging piece in the valve to rotate or move up and down, the flow rate of liquid or gas in a pipeline is adjusted by adjusting the flow area in a pipe, but the valves do not have a buffering function, the gas or the liquid in the pipeline directly applies pressure to the valve, so that different force needs to be applied when the valve is opened or closed, and once the pressure in the pipeline is increased, the valve is easily damaged to a certain extent.
Disclosure of Invention
The invention aims to solve the problems and provide a valve for a gas pipeline, which has a simple structure and a reasonable design.
The invention realizes the purpose through the following technical scheme:
a valve for a gas pipeline comprises a valve, a detection pipeline connected to the outlet end of the valve and an air pressure detector arranged on the detection pipeline, wherein a safety buffer pipeline is connected to the inlet end of the valve;
the valve comprises a first shell, a first connecting flange connected to the first shell, a second connecting flange connected to the second shell, an inner pipe arranged between the first shell and the second shell, a first helical gear sleeved on the inner pipe, a plurality of plugging bulges arranged on the inner wall of the inner pipe, a plurality of mounting holes arranged on the inner pipe, plugging pieces arranged in the mounting holes, a mounting bracket connected to the first shell, a motor and an adjusting handle arranged on the mounting bracket, a worm wheel and a second helical gear connected to a motor output shaft, and a worm connected to the adjusting handle, wherein the plugging pieces are connected with the first helical gear, the first helical gear is meshed with the second helical gear, and the worm wheel is meshed with the worm.
As a further optimization scheme of the invention, the inner wall of the safety buffer pipeline is connected with a plurality of fixing rings, a plurality of limiting rods connected to the fixing rings, a moving ring sleeved on the limiting rods, a moving rod connected to the moving ring, a connecting rod fixedly connected to the moving rod, a buffer plate connected to the end part of the connecting rod and a spring sleeved on the limiting rods.
As a further optimization scheme of the invention, one end of the spring is connected with the movable ring, and the other end of the spring is connected with the fixed ring.
The buffer plate is provided with a chamfer inclined plane, and the middle part of the fixing ring is provided with a through hole matched with the buffer plate.
As a further optimization scheme of the invention, the plane of the first bevel gear is provided with an external thread, the plugging piece is provided with a thread matched with the external thread, and the external thread is meshed with the thread.
As a further optimization scheme of the invention, the worm wheel and the worm are both positioned in the mounting bracket, and the worm wheel is positioned between the second bevel gear and the motor.
As a further optimized scheme of the invention, a plurality of clamping blocks are arranged on the inner pipe, a plurality of clamping grooves are arranged on the inner wall of the first shell, and the clamping blocks are positioned in the clamping grooves.
As a further optimization scheme of the invention, a plurality of limiting grooves are formed in the inner wall of the second shell, a plurality of driven bevel gears are arranged in the limiting grooves, and the driven bevel gears are meshed with the first bevel gears.
As a further optimization scheme of the invention, the first shell and the second shell are detachably connected, the bottom of the first shell is connected with the base, and the base is detachably connected with the second shell.
As a further optimization scheme of the invention, round holes matched with the inner pipe are arranged on the first outer shell and the second outer shell, and the diameter of each round hole is the same as the inner diameter of the inner pipe.
The invention has the beneficial effects that:
1) according to the invention, when gas passes through the safety buffer pipeline, the buffer plate is pushed and the moving ring is driven to move, when the moving ring moves, the spring is compressed, after a gap is formed between the buffer plate and the fixed ring, the gas circulates from the gap, a certain buffer effect is achieved, the gas pressure in the pipeline can be prevented from suddenly increasing to cause certain damage to the valve, the service life of the valve is prolonged, and the buffer plate is in one-way circulation, so that the gas in the pipeline can be effectively prevented from flowing backwards, and the safety is higher;
2) when the valve is opened, the rotation of the adjusting handle can be manually controlled through controlling the rotation of the motor, the adjusting handle can be driven to rotate, the second bevel gear drives the first bevel gear to rotate after rotating, the plugging piece is driven to move upwards in the mounting hole through the external thread after the first bevel gear rotates, the flowing area in the inner pipe can be increased after the plugging piece moves upwards, the effect of controlling the opening of the valve is achieved, when the valve is controlled to be closed, the second bevel gear rotates reversely and drives the first bevel gear to rotate reversely, the plugging piece is driven to move downwards after the first bevel gear rotates reversely, the flowing area of fuel gas in the inner pipe is reduced until the plugging piece finally contacts with the plugging bulge, the effect of completely closing the valve is achieved, and the valve can be adjusted through the motor or manually, so that the valve can cope with emergency situations such as power failure and the like, the safety is high;
3) the invention has simple structure, high stability, reasonable design and convenient realization.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the valve of the present invention;
FIG. 3 is a view of the engagement of the blocking member with the first helical gear according to the present invention;
FIG. 4 is a view of the closure of the present invention in cooperation with an inner tube;
fig. 5 is a schematic structural view of the safety buffer pipe in the present invention.
In the figure: 1. a valve; 101. a first housing; 102. a first connecting flange; 103. a second housing; 104. a second connecting flange; 105. an inner tube; 106. a first helical gear; 107. a second helical gear; 108. a motor; 109. adjusting the handle; 110. a blocking member; 111. plugging the protrusion; 112. mounting holes; 113. a limiting groove; 114. a worm; 115. a base; 116. an external thread; 117. mounting a bracket; 118. a worm gear; 2. a safe buffer pipeline; 201. a fixing ring; 202. a buffer plate; 203. a moving ring; 204. a limiting rod; 205. a spring; 206. a connecting rod; 207. a travel bar; 3. detecting a pipeline; 4. an air pressure detector.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-5, a valve for a gas pipeline comprises a valve 1, a detection pipeline 3 connected to an outlet end of the valve 1, and an air pressure detector 4 arranged on the detection pipeline 3, wherein an inlet end of the valve 1 is connected with a safety buffer pipeline 2;
the valve 1 comprises a first outer shell 101, a first connecting flange 102 connected to the first outer shell 101, a second outer shell 103, a second connecting flange 104 connected to the second outer shell 103, an inner pipe 105 arranged between the first outer shell 101 and the second outer shell 103, a first helical gear 106 sleeved on the inner pipe 105, a plurality of blocking bulges 111 arranged on the inner wall of the inner pipe 105, a plurality of mounting holes 112 arranged on the inner pipe 105, blocking pieces 110 arranged in the mounting holes 112, a mounting bracket 117 connected to the first outer shell 101, a motor 108 and an adjusting handle 109 arranged on the mounting bracket 117, a worm wheel 118 and a second helical gear 107 connected to an output shaft of the motor 108, and a worm 114 connected to the adjusting handle 109, wherein the blocking pieces 110 are connected with the first helical gear 106, the first helical gear 106 is meshed with the second helical gear 107, and the worm wheel 118 is meshed with the worm 114; the plane of the first bevel gear 106 is provided with an external thread 116, the plugging piece 110 is provided with a thread matched with the external thread 116, and the external thread 116 is meshed with the thread; the worm wheel 118 and the worm 114 are both located in the mounting bracket 117, and the worm wheel 118 is located between the second bevel gear 107 and the motor 108; a plurality of clamping blocks are arranged on the inner pipe 105, a plurality of clamping grooves are formed in the inner wall of the first shell 101, and the clamping blocks are located in the clamping grooves; the inner wall of the second housing 103 is provided with a plurality of limiting grooves 113, a plurality of driven bevel gears are arranged in the limiting grooves 113, the driven bevel gears are meshed with the first bevel gears 106, and the driven bevel gears can prevent the first bevel gears 106 from inclining during rotation, so that the first bevel gears 106 are more stable during rotation; the first shell 101 and the second shell 103 are detachably connected, the bottom of the first shell 101 is connected with a base 115, and the base 115 is detachably connected with the second shell 103; the first shell 101 and the second shell 103 are both provided with round holes matched with the inner pipe 105, the diameter of the round holes is the same as the inner diameter of the inner pipe 105, one end of the blocking piece 110 is conical, the other end of the blocking piece is elliptic cylindrical, a half of the elliptic cylindrical end is cut to form an L shape, threads are arranged on the cutting surface, the cutting is to prevent the cylindrical end from being limited by the first bevel gear 106 when moving, and the threads can be meshed with the external threads 116 on the first bevel gear 106, so that the blocking piece 110 can be driven to move upwards or downwards in the mounting hole 112 after the first bevel gear 106 rotates, and the effect of opening or closing the valve 1 is achieved;
when the valve 1 is opened, the rotation of the adjusting handle 109 can be manually controlled through the rotation of the control motor 108, the second bevel gear 107 can be driven to rotate, the first bevel gear 106 is driven to rotate after the second bevel gear 107 rotates, the blocking piece 110 is driven to move upwards in the mounting hole 112 through the external thread 116 after the first bevel gear 106 rotates, after the blocking piece 110 moves upwards, the flowing area in the inner pipe 105 can be increased, the opening effect of the control valve 1 is achieved, when the control valve 1 is closed, the second bevel gear 107 rotates reversely and drives the first bevel gear 106 to rotate reversely, after the first bevel gear 106 rotates reversely, the blocking piece 110 is driven to move downwards, the flowing area of the gas in the inner pipe 105 is reduced until the blocking piece 110 finally contacts with the blocking bulge 111, the effect of completely closing the valve 1 is achieved, and the valve 1 can be adjusted through the motor 108 or manually, therefore, the emergency protection device can deal with emergencies such as power failure and the like, and has higher safety;
the inner wall of the safety buffer pipeline 2 is connected with a plurality of fixing rings 201, a plurality of limiting rods 204 connected to the fixing rings 201, a moving ring 203 sleeved on the limiting rods 204, a moving rod 207 connected to the moving ring 203, a connecting rod 206 fixedly connected to the moving rod 207, a buffer plate 202 connected to the end part of the connecting rod 206 and a spring 205 sleeved on the limiting rods 204; one end of the spring 205 is connected with the moving ring 203, and the other end of the spring 205 is connected with the fixed ring 201; a chamfer inclined plane is arranged on the buffer plate 202, and a through hole matched with the buffer plate 202 is arranged in the middle of the fixing ring 201;
when the gas was followed safe buffer pipe 2 process, promote buffer board 202 and drive shift ring 203 and remove, compression spring 205 when shift ring 203 removed, after producing the clearance between buffer board 202 and the solid fixed ring 201, the gas circulates from the clearance, play certain cushioning effect, can prevent that the gas pressure in the pipeline from increasing suddenly and leading to certain damage to valve 1, prolong valve 1's life, and one-way circulation during buffer board 202, can effectually prevent that the gas is palirrhea in the pipeline, the security is higher.
It should be noted that the motor 108, the air pressure detector 4, and the control system of the motor 108 are all in the prior art, and are not described herein again.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. The utility model provides a valve for gas pipeline, includes valve (1), connects detection pipeline (3) on valve (1) exit end and locates atmospheric pressure detector (4) on detecting pipeline (3), its characterized in that: the inlet end of the valve (1) is connected with a safety buffer pipeline (2);
the valve (1) comprises a first outer shell (101), a first connecting flange (102) connected to the first outer shell (101), a second outer shell (103), a second connecting flange (104) connected to the second outer shell (103), an inner pipe (105) arranged between the first outer shell (101) and the second outer shell (103), a first helical gear (106) sleeved on the inner pipe (105), a plurality of plugging bulges (111) arranged on the inner wall of the inner pipe (105), a plurality of mounting holes (112) arranged on the inner pipe (105), a plugging piece (110) arranged in the mounting hole (112), a mounting bracket (117) connected to the first outer shell (101), a motor (108) and an adjusting handle (109) arranged on the mounting bracket (117), a worm wheel (118) and a second helical gear (107) connected to an output shaft of the motor (108), and a worm (114) connected to the adjusting handle (109), the blocking piece (110) is connected with a first bevel gear (106), the first bevel gear (106) is meshed with a second bevel gear (107), and the worm wheel (118) is meshed with the worm (114).
2. The valve for a gas pipe according to claim 1, wherein: be connected with the solid fixed ring of a plurality of (201), connect a plurality of gag lever post (204) on solid fixed ring (201), establish shift ring (203) on gag lever post (204), connect shift rod (207) on shift ring (203), connecting rod (206) of fixed connection on shift rod (207), connect buffer board (202) and the spring (205) of establishing on gag lever post (204) at connecting rod (206) tip on safe buffer pipeline (2) inner wall.
3. The valve for a gas pipe according to claim 2, wherein: one end of the spring (205) is connected with the movable ring (203), and the other end of the spring (205) is connected with the fixed ring (201).
4. The valve for a gas pipe according to claim 2, wherein: the buffer plate (202) is provided with a chamfer inclined plane, and the middle part of the fixing ring (201) is provided with a through hole matched with the buffer plate (202).
5. The valve for a gas pipe according to claim 1, wherein: the plane of the first bevel gear (106) is provided with an external thread (116), the plugging piece (110) is provided with a thread matched with the external thread (116), and the external thread (116) is meshed with the thread.
6. The valve for a gas pipe according to claim 1, wherein: the worm wheel (118) and the worm (114) are both located in the mounting bracket (117), and the worm wheel (118) is located between the second bevel gear (107) and the motor (108).
7. The valve for a gas pipe according to claim 1, wherein: the inner pipe (105) is provided with a plurality of clamping blocks, the inner wall of the first shell (101) is provided with a plurality of clamping grooves, and the clamping blocks are located in the clamping grooves.
8. The valve for a gas pipe according to claim 1, wherein: the inner wall of the second shell (103) is provided with a plurality of limiting grooves (113), a plurality of driven helical gears are arranged in the limiting grooves (113), and the driven helical gears are meshed with the first helical gears (106).
9. The valve for a gas pipe according to claim 1, wherein: the first shell (101) is detachably connected with the second shell (103), the bottom of the first shell (101) is connected with a base (115), and the base (115) is detachably connected with the second shell (103).
10. The valve for a gas pipe according to claim 1, wherein: the first outer shell (101) and the second outer shell (103) are both provided with round holes matched with the inner tube (105), and the diameter of each round hole is the same as the inner diameter of the inner tube (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618957.8A CN111720595A (en) | 2020-07-01 | 2020-07-01 | Valve for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010618957.8A CN111720595A (en) | 2020-07-01 | 2020-07-01 | Valve for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111720595A true CN111720595A (en) | 2020-09-29 |
Family
ID=72570795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010618957.8A Pending CN111720595A (en) | 2020-07-01 | 2020-07-01 | Valve for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111720595A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228636A (en) * | 2020-11-20 | 2021-01-15 | 安徽中兴流体装备有限责任公司 | Valve with good anti-freezing effect and sealing performance |
| CN112483693A (en) * | 2020-11-27 | 2021-03-12 | 郭国友 | Valve structure with dead pixel automatic detection function |
| CN114000856A (en) * | 2021-11-01 | 2022-02-01 | 胡丽敏 | Valve for oil exploitation pipeline |
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| CN203516863U (en) * | 2013-10-25 | 2014-04-02 | 华英伦科技(宁波)有限公司 | Multifunctional protective ball valve for washing machine |
| CN106740542A (en) * | 2017-01-25 | 2017-05-31 | 深圳市创晶辉精密塑胶模具有限公司 | Vehicle-carrying display screen circulator transmission device |
| CN107654689A (en) * | 2017-09-21 | 2018-02-02 | 永嘉县荣信科技有限公司 | A kind of ball valve |
| CN207814462U (en) * | 2018-01-25 | 2018-09-04 | 泉城阀门有限公司 | A kind of butterfly valve that stability is good |
| CN209922973U (en) * | 2019-05-06 | 2020-01-10 | 薛晓冬 | Secondary reverse osmosis water treatment equipment |
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| CN111059299A (en) * | 2019-12-31 | 2020-04-24 | 段家贵 | High-density liquid pipeline quick adjusting valve |
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2020
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| CN203516863U (en) * | 2013-10-25 | 2014-04-02 | 华英伦科技(宁波)有限公司 | Multifunctional protective ball valve for washing machine |
| CN106740542A (en) * | 2017-01-25 | 2017-05-31 | 深圳市创晶辉精密塑胶模具有限公司 | Vehicle-carrying display screen circulator transmission device |
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| CN207814462U (en) * | 2018-01-25 | 2018-09-04 | 泉城阀门有限公司 | A kind of butterfly valve that stability is good |
| CN209922973U (en) * | 2019-05-06 | 2020-01-10 | 薛晓冬 | Secondary reverse osmosis water treatment equipment |
| CN210240678U (en) * | 2019-07-31 | 2020-04-03 | 天津凯世通阀门制造有限公司 | High-strength wear-resistant check valve |
| CN110792810A (en) * | 2019-10-30 | 2020-02-14 | 铜陵新创流体科技有限公司 | Micro-resistance slow-closing silencing check valve |
| CN111059299A (en) * | 2019-12-31 | 2020-04-24 | 段家贵 | High-density liquid pipeline quick adjusting valve |
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| Title |
|---|
| 张健荣等: "《机电产品学（机械产品）参考资料》", 31 October 1984 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228636A (en) * | 2020-11-20 | 2021-01-15 | 安徽中兴流体装备有限责任公司 | Valve with good anti-freezing effect and sealing performance |
| CN112483693A (en) * | 2020-11-27 | 2021-03-12 | 郭国友 | Valve structure with dead pixel automatic detection function |
| CN114000856A (en) * | 2021-11-01 | 2022-02-01 | 胡丽敏 | Valve for oil exploitation pipeline |
| CN114000856B (en) * | 2021-11-01 | 2024-05-07 | 跃丰阀门制造有限公司 | Valve for petroleum exploitation pipeline |
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Application publication date: 20200929 |
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| RJ01 | Rejection of invention patent application after publication |