CN113124184A - Valve core assembly of novel structure of precise pressure regulating valve - Google Patents
Valve core assembly of novel structure of precise pressure regulating valve Download PDFInfo
- Publication number
- CN113124184A CN113124184A CN202110553064.4A CN202110553064A CN113124184A CN 113124184 A CN113124184 A CN 113124184A CN 202110553064 A CN202110553064 A CN 202110553064A CN 113124184 A CN113124184 A CN 113124184A
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- Prior art keywords
- valve core
- valve
- valve body
- pressure regulating
- assembly
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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
- F16K1/36—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
- 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
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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
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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
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the technical field of pressure regulating valves, in particular to a valve core assembly with a novel structure of a precise pressure regulating valve, which comprises a valve body, the valve core component is arranged in the valve body through the base, the lower air chamber diaphragm component is arranged on the upper side in the valve body, the high-strength stainless steel 440 is adopted through the steel ball, therefore, the smoothness, roundness, hardness and corrosion resistance of the spherical surface can meet the product performance requirements, the problems of spherical surface scratch, damage and the like can not occur, thereby greatly improving the qualification rate of the valve core assembly, and by adopting the stainless steel 304 material for processing the valve core, because the valve core does not need to process a spherical surface, the processing difficulty is small, the processing efficiency and the qualification rate are high, meanwhile, the valve core is made of stainless steel 304 material with strong corrosion resistance, so the valve core does not need to be subjected to corrosion prevention treatment after being processed, this also greatly shortens the machining cycle of the part, thereby increasing the valve core machining speed as a whole and reducing the production cost.
Description
Technical Field
The invention relates to the technical field of pressure regulating valves, in particular to a valve core assembly with a novel structure for a precision pressure regulating valve.
Background
The precision pressure regulating valve has the advantages of stable output pressure, high sensitivity, high pressure regulating precision and the like, so the precision pressure regulating valve is widely applied to industrial production, a valve core assembly is one of key parts of the precision pressure regulating valve, and a spherical surface and a rubber vulcanized layer of the assembly are used as sealing surfaces for closing and exhausting an upper air chamber and opening and closing a main valve port, so the requirements of the valve core assembly on the smoothness, roundness and hardness of the spherical surface and the coaxiality of the conical surface of the rubber vulcanized layer are high.
Although the original valve core assembly (old type) is simpler in structure, the valve core and the spherical surface are integrally processed, but the requirement on the smoothness and the roundness of the spherical surface of the valve core is higher, so that the requirement on the processing is higher, the processing difficulty is high, the processing efficiency is low, the cost is high, meanwhile, the valve core needs to be subjected to rubber vulcanization treatment after being processed, the spherical surface of the valve core is easily scratched and damaged due to the influence of external factors in the rubber vulcanization and circulation processes, and therefore the assembly is scrapped, the qualification rate of the assembly is influenced, the integral cost of products is increased, and the problem is improved by the valve core assembly with a new structure of the precise pressure regulating valve.
Disclosure of Invention
The invention aims to provide a valve core assembly with a novel structure for a precision pressure regulating valve, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a precision air-vent valve new construction case combination piece, includes the valve body, department is provided with the base in the middle of the bottom of valve body, there is the case subassembly inside of valve body through the pedestal mounting, the tip of valve body is provided with the plastics connecting block, the tip of plastics connecting block is provided with the body connecting block, the inside upside of valve body is provided with down air chamber diaphragm assembly, the tip of air chamber diaphragm assembly is provided with well air chamber diaphragm down.
According to the preferable scheme of the invention, an air inlet hole is formed in the left side of the valve body, an air outlet hole is formed in the right side of the valve body, pressure gauge connecting holes are formed in the front side and the back side of the valve body, a stainless steel filter screen is arranged inside the air inlet hole, a plug is arranged in the pressure gauge connecting hole in the right side, and the plastic connecting block is made of a PC material.
According to the preferable scheme of the invention, a first O-shaped sealing ring is arranged at the joint of the outer wall of the base and the valve body, a fixed throttling hole insert is embedded in the upper body connecting block, and the first O-shaped sealing ring is made of nitrile rubber.
According to the preferable scheme of the invention, the lower air chamber diaphragm assembly comprises a lower cavity box, a lower air chamber diaphragm and a lower cavity box cover, an air tap is arranged in the middle of the bottom of the lower cavity box, the lower cavity box cover is arranged at the end part of the lower cavity box, and the lower air chamber diaphragm is arranged on the lower side of the outer wall of the lower cavity box.
In a preferred embodiment of the present invention, the bottom of the lower air chamber diaphragm is connected to the valve body through a fixed orifice gasket and a second O-ring, and the second O-ring is made of nitrile rubber.
According to the preferable scheme of the invention, the valve core assembly comprises a valve core, a rubber pad, a nitrile rubber vulcanized layer and steel balls, the steel balls are arranged at the end part of the valve core, the nitrile rubber vulcanized layer is arranged on the outer wall of the upper side of the valve core, the outer wall of the lower side of the valve core is connected with the base through the rubber pad, the rubber hardness of the nitrile rubber vulcanized layer is Shore 85+2, and the steel balls are made of stainless steel 440.
As a preferable scheme of the invention, steel balls at the end part of the valve core are arranged corresponding to the air tap, and the valve core is made of stainless steel 304.
As a preferable scheme of the invention, the plastic connecting block, the upper body connecting block and the valve body are connected through connecting screws.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the valve core vulcanization process, the nitrile rubber vulcanized layer is arranged on the middle step of the valve core, the rubber hardness is Shore 85+2, and the valve core has no spherical surface in the rubber vulcanization process, so that the problems of scratching and spherical surface damage in the vulcanization and part circulation processes are avoided, and the qualified rate of the valve core vulcanized part is improved; after the valve core is vulcanized by the nitrile rubber layer, the stainless steel 440 steel balls are pressed into the hole on the top surface of the valve core in an interference manner, and because the valve core does not need to be subjected to surface anti-corrosion treatment, spherical surface polishing and other factors which influence the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer after being processed, the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer can be better ensured after the vulcanized valve core is pressed into the steel balls, and meanwhile, the steel balls adopt the high-strength stainless steel 440, so that the smoothness, the roundness, the hardness and the anti-corrosion capability of the spherical surface can be ensured to meet the product performance requirements.
2. According to the invention, the valve core is made of the stainless steel 304 material, and the valve core does not need to be processed with a spherical surface, so that the processing difficulty is small, the processing efficiency and the qualification rate are high, and meanwhile, the stainless steel 304 material with strong corrosion resistance is adopted, so that the valve core does not need to be subjected to corrosion prevention treatment after being processed, and the processing period of the part is greatly shortened, thereby integrally improving the processing speed of the valve core and reducing the production cost.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is an overall rear view of the present invention;
FIG. 3 is a schematic diagram of the overall explosive structure of the present invention;
fig. 4 is an overall sectional structural view of the present invention.
In the figure: 1. a valve body; 101. a base; 102. a plastic connecting block; 103. an upper body connecting block; 104. a middle gas chamber diaphragm; 105. an air inlet; 106. an air outlet; 107. a pressure gauge connecting hole; 108. a stainless steel filter screen; 109. a plug; 110. a first O-ring seal; 111. a fixed orifice insert; 112. a connecting screw; 2. a valve core assembly; 201. a valve core; 202. a rubber pad; 203. a nitrile rubber vulcanizate; 204. steel balls; 3. a lower air chamber diaphragm assembly; 301. a lower cavity box; 302. a lower air chamber diaphragm; 303. a lower cavity box cover; 304. an air tap; 305. a fixed orifice shim; 306. and a second O-shaped sealing ring.
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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-4, the present invention provides a technical solution:
a new structure valve core assembly of a precision pressure regulating valve comprises a valve body 1, a base 101 is arranged in the middle of the bottom of the valve body 1, a valve core assembly 2 is installed in the valve body 1 through the base 101, a plastic connecting block 102 is arranged at the end of the valve body 1, an upper body connecting block 103 is arranged at the end of the plastic connecting block 102, a lower air chamber diaphragm assembly 3 is arranged at the upper side in the valve body 1, a middle air chamber diaphragm 104 is arranged at the end of the lower air chamber diaphragm assembly 3, an air inlet 105 is arranged at the left side of the valve body 1, an air outlet 106 is arranged at the right side of the valve body 1, pressure gauge connecting holes 107 are arranged at the front side and the back side of the valve body 1, a stainless steel filter screen 108 is arranged in the air inlet 105, a plug 109 is arranged in the pressure gauge connecting hole 107 at the right side, the plastic connecting block 102 is made of PC, the first O-shaped sealing ring 110 is made of nitrile rubber, the lower air chamber diaphragm assembly 3 comprises a lower cavity box 301, a lower air chamber diaphragm 302 and a lower cavity box cover 303, an air tap 304 is arranged in the middle of the bottom of the lower cavity box 301, the lower cavity box cover 303 is arranged at the end portion of the lower cavity box 301, the lower air chamber diaphragm 302 is arranged on the lower side of the outer wall of the lower cavity box 301, the bottom of the lower air chamber diaphragm 302 is connected with the valve body 1 through a fixed throttling hole gasket 305 and a second O-shaped sealing ring 306, and the second O-shaped sealing ring 306 is made of nitrile rubber.
In an embodiment, referring to fig. 3 and 4, the valve core assembly 2 includes a valve core 201, a rubber pad 202, a nitrile rubber vulcanized layer 203 and steel balls 204, the steel balls 204 are arranged at the end portions of the valve core 201, the nitrile rubber vulcanized layer 203 is arranged on the outer wall of the upper side of the valve core 201, the outer wall of the lower side of the valve core 201 is connected with the base 101 through the rubber pad 202, the rubber hardness of the nitrile rubber vulcanized layer 203 is shore 85+2, the steel balls 204 are made of stainless steel 440, the valve core 201 is vulcanized by using a nitrile rubber process, the nitrile rubber vulcanized layer 203 is arranged on the middle step of the valve core 201, the rubber hardness is shore 85+2, and the problem that the valve core 201 has no spherical surface in the rubber vulcanization process cannot occur, the problem that the spherical surface is; after the valve element 201 is vulcanized by the nitrile rubber layer, the stainless steel ball 204 is pressed into the hole on the top surface of the valve element 201 in an interference manner, and because the valve element 201 does not need to be subjected to surface anticorrosion treatment, spherical surface polishing and other factors which influence the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer after being processed, the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer can be better ensured after the valve element vulcanized part is pressed into the steel ball, and meanwhile, the steel ball 204 adopts the high-strength stainless steel 440, so that the smoothness, the roundness, the hardness and the anticorrosion capacity of the spherical surface can be ensured to meet the product performance requirements, the problems of spherical surface.
In the embodiment, referring to fig. 3 and 4, the steel ball 204 at the end of the valve core 201 is arranged corresponding to the air tap 304, the valve core 201 is made of stainless steel 304, the valve core 201 does not need to be machined into a spherical surface, so that the machining difficulty is low, the machining efficiency and the qualification rate are high, and meanwhile, the valve core is made of stainless steel 304 with strong corrosion resistance, so that the valve core does not need to be subjected to corrosion prevention treatment after being machined, the machining period of the part is greatly shortened, and the machining speed of the valve core is integrally increased and the production cost is reduced.
The working principle is as follows: during the use, replace former valve core composite member (old type) well valve core composite member use through case subassembly 2 in this scheme, 2 structural procedure of valve core subassembly are as follows in this scheme: according to the process for vulcanizing the nitrile rubber by using the valve element 201, the nitrile rubber vulcanized layer 203 is arranged on the middle step of the valve element 201, the rubber hardness is Shore 85+2, and the problem that the spherical surface is scratched and damaged in the vulcanization and part circulation processes can be avoided because the valve element 201 has no spherical surface in the rubber vulcanization process, so that the qualified rate of the valve element vulcanized part is improved; after the valve core 201 is vulcanized by the nitrile rubber layer, the stainless steel ball 204 is pressed into the hole on the top surface of the valve core 201 in an interference manner, because the valve core 201 does not need to be subjected to surface anticorrosion treatment, spherical surface polishing and other factors which influence the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer, the coaxiality of the spherical surface and the conical surface of the vulcanized rubber layer can be better ensured after the valve core vulcanized piece is pressed into the steel ball, and simultaneously, the steel ball 204 adopts the high-strength stainless steel 440, so that the smoothness, the roundness, the hardness and the anticorrosion capability of the spherical surface can be ensured to meet the product performance requirements, the spherical surface can not be scratched, the damage and other problems can be avoided, the qualification rate of the valve core assembly is greatly improved, the valve core 201 is processed by adopting the stainless steel 304 material, and because the valve core 201 does not need to be processed by the spherical surface, the processing, this also greatly shortens the machining cycle of the part, thereby increasing the valve core machining speed as a whole and reducing the production cost.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a precision pressure-regulating valve new construction case sub-assembly, includes valve body (1), its characterized in that: department is provided with base (101) in the middle of the bottom of valve body (1), case subassembly (2) are installed through base (101) to the inside of valve body (1), the tip of valve body (1) is provided with plastics connecting block (102), the tip of plastics connecting block (102) is provided with upper part connecting block (103), the inside upside of valve body (1) is provided with down air chamber diaphragm assembly (3), the tip of lower air chamber diaphragm assembly (3) is provided with well air chamber diaphragm (104).
2. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 1, characterized in that: the left side of valve body (1) is provided with inlet port (105), the right side of valve body (1) is provided with venthole (106), the front and the back of valve body (1) are provided with manometer connecting hole (107), the inside of inlet port (105) is provided with stainless steel filter screen (108), the right side manometer connecting hole (107) are provided with end cap (109), plastics connecting block (102) adopt the preparation of PC material.
3. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 1, characterized in that: the connection department of the outer wall of base (101) and valve body (1) is provided with first O type sealing washer (110), it has fixed orifice mold insert (111) to inlay on upper part of the body connecting block (103), first O type sealing washer (110) adopt the preparation of butadiene-acrylonitrile rubber.
4. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 1, characterized in that: lower air chamber diaphragm assembly (3) are including lower chamber box (301), lower air chamber diaphragm (302) and lower chamber lid (303), the department is provided with air cock (304) in the middle of the bottom of lower chamber box (301), the tip of lower chamber box (301) is provided with lower chamber lid (303), the outer wall downside of lower chamber box (301) is provided with lower air chamber diaphragm (302).
5. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 4, characterized in that: the bottom of the lower air chamber diaphragm (302) is connected with the valve body (1) through a fixed throttling hole gasket (305) and a second O-shaped sealing ring (306), and the second O-shaped sealing ring (306) is made of nitrile rubber.
6. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 1, characterized in that: the valve core assembly (2) comprises a valve core (201), a rubber pad (202), a nitrile rubber vulcanized layer (203) and steel balls (204), wherein the steel balls (204) are arranged at the end part of the valve core (201), the nitrile rubber vulcanized layer (203) is arranged on the outer wall of the upper side of the valve core (201), the outer wall of the lower side of the valve core (201) is connected with the base (101) through the rubber pad (202), the rubber hardness of the nitrile rubber vulcanized layer (203) is 85+2 Shore, and the steel balls (204) are made of stainless steel 440 materials.
7. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 6, characterized in that: the end steel ball (204) of the valve core (201) is arranged corresponding to the air tap (304), and the valve core (201) is made of stainless steel 304.
8. The valve core assembly for the new structure of the precision pressure regulating valve according to claim 1, characterized in that: the plastic connecting block (102), the upper body connecting block (103) and the valve body (1) are connected through a connecting screw (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110553064.4A CN113124184A (en) | 2021-05-20 | 2021-05-20 | Valve core assembly of novel structure of precise pressure regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110553064.4A CN113124184A (en) | 2021-05-20 | 2021-05-20 | Valve core assembly of novel structure of precise pressure regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113124184A true CN113124184A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110553064.4A Pending CN113124184A (en) | 2021-05-20 | 2021-05-20 | Valve core assembly of novel structure of precise pressure regulating valve |
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| CN (1) | CN113124184A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586791A (en) * | 2021-08-03 | 2021-11-02 | 深圳市得宝来自动化科技有限公司 | Electromagnetic valve with quick exhaust function |
| CN117515180A (en) * | 2024-01-05 | 2024-02-06 | 海普瑞(常州)洁净系统科技有限公司 | High-precision pressure regulating valve for semiconductor chemicals and working method thereof |
-
2021
- 2021-05-20 CN CN202110553064.4A patent/CN113124184A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113586791A (en) * | 2021-08-03 | 2021-11-02 | 深圳市得宝来自动化科技有限公司 | Electromagnetic valve with quick exhaust function |
| CN117515180A (en) * | 2024-01-05 | 2024-02-06 | 海普瑞(常州)洁净系统科技有限公司 | High-precision pressure regulating valve for semiconductor chemicals and working method thereof |
| CN117515180B (en) * | 2024-01-05 | 2024-03-12 | 海普瑞(常州)洁净系统科技有限公司 | High-precision pressure regulating valve for semiconductor chemicals and working method thereof |
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