CN221591829U - Pneumatic three-way valve group with self-balancing structure - Google Patents
Pneumatic three-way valve group with self-balancing structure Download PDFInfo
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- CN221591829U CN221591829U CN202323379655.8U CN202323379655U CN221591829U CN 221591829 U CN221591829 U CN 221591829U CN 202323379655 U CN202323379655 U CN 202323379655U CN 221591829 U CN221591829 U CN 221591829U
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- 238000007789 sealing Methods 0.000 claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 239000000428 dust Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000009776 industrial production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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Abstract
The utility model relates to a pneumatic three-way valve bank with a self-balancing structure, wherein a movable part consists of a piston, a valve rod and a main valve flap which are assembled together, a cylinder spring is arranged between the movable part and a sleeve, the movable part, the cylinder spring and the sleeve are all arranged in a valve body, a cylinder cover is arranged at the top of the valve body and is provided with a compressed air inlet, compressed air enters a three-way valve cylinder through a gas inlet of the cylinder cover and is used for driving the piston to move downwards under the compressed air with certain pressure, and the piston drives the valve rod to act so as to realize the switching of fluid flow directions; a valve rod sealing support ring and an O-shaped sealing ring are arranged between the sleeve and the valve rod, and the valve rod sealing support ring plays a supporting and guiding role when being used for sealing, so that the valve rod clamping stagnation is avoided to influence the function of the three-way valve group, and the reliability of the three-way valve group is improved. The pneumatic three-way valve bank can reduce the valve rod clamping probability of the three-way valve, reduce the requirement of the three-way valve bank on compressed air, enlarge the use occasion of the pneumatic three-way valve and improve the reliability of the three-way valve bank.
Description
Technical Field
The utility model relates to a three-way valve group structure, in particular to a pneumatic three-way valve group with a self-balancing structure.
Background
The three-way valve is mainly used for realizing the switching of the flow direction of fluid and is widely applied to the fields of ships and industrial production. The system is commonly used for purifying and separating fuel oil/lubricating oil in the field of ships, and is commonly used for purifying food, purifying oil, treating environment and the like in the field of industrial production. The three-way valve can be classified into a pneumatic three-way valve and an electromagnetic three-way valve according to a driving mode.
Compared with a pneumatic three-way valve, the electromagnetic three-way valve has the advantages of large size, heavy weight, large heating value and relatively low reliability. The pneumatic three-way valve has the advantages of small size, light weight, compressed air driving, quick response, simple composition and high reliability, and is widely applied to the fields of ships and industry. However, the use of the pneumatic three-way valve requires the outside to provide compressed air with higher pressure as a guarantee condition, so that the use range of the pneumatic three-way valve is limited; meanwhile, the valve rod is easy to be blocked when the pneumatic three-way valve is used.
Disclosure of Invention
In order to solve the problem of valve rod clamping stagnation, reduce the requirement of the three-way valve group on compressed air, expand the application occasions of the pneumatic three-way valve and improve the reliability of the three-way valve group, the utility model provides the pneumatic three-way valve group with a self-balancing structure.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a pneumatic three-way valve set with self-balancing structure is composed of valve body, sleeve, movable part consisting of piston, valve rod and main valve clack, and cylinder spring installed between said movable part and sleeve, the cylinder cover is arranged at the top of the valve body, the cylinder cover is provided with a compressed air inlet, compressed air enters the three-way valve cylinder through the air inlet of the cylinder cover and is used for driving the piston to move downwards under the compressed air with certain pressure, and the piston drives the valve rod to act so as to realize the switching of fluid flow directions; a valve rod sealing support ring and an O-shaped sealing ring are arranged between the sleeve and the valve rod, wherein the valve rod sealing support ring is used for sealing, plays a supporting and guiding role, avoids the influence of valve rod clamping stagnation on the function of the three-way valve group, and improves the reliability of the three-way valve group.
Further, the piston, the valve rod and the main valve clack are assembled into a movable part through a lock nut, a nut and a gasket.
Further, the cylinder head is provided with a cylinder top screw sleeve through threads, a valve rod penetrates through the cylinder top screw sleeve, the cylinder cover is covered on the movable part and is assembled with the valve body through a mounting bolt, and the cylinder top screw sleeve is connected with a dust cover through threads.
Further, the valve rod is a semi-hollow valve rod with a balance disc, a fluid inflow port is formed in the bottom of the valve rod and the upper end of the valve rod balance disc, a balance cavity is formed between the valve rod balance disc and the sleeve, the pressure of fluid in the balance cavity can balance the pressure of inlet fluid of the three-way valve group on the main valve clack, the requirement of the valve group on the pressure of compressed air is reduced, and the dependence of the system on external guarantee conditions is reduced.
Further, the fluid inlet of the pneumatic three-way valve group is provided with a regulating valve for regulating the flow entering the valve group.
Further, a check valve is arranged at the fluid outlet of the pneumatic three-way valve group and is used for preventing the fluid from flowing backwards and realizing the unidirectional flow of the fluid.
Further, the check valve consists of a check spring, a check valve clack and a guide disc, and is installed with the valve body through threads of the guide disc.
The beneficial effects of the utility model are as follows:
The pneumatic three-way valve bank with the self-balancing structure can reduce the clamping probability of the valve rod of the three-way valve, reduce the requirement of the three-way valve bank on compressed air, enlarge the use occasion of the pneumatic three-way valve and improve the reliability of the three-way valve bank.
Drawings
FIG. 1 is a front cross-sectional view of a pneumatic three-way valve assembly of the self-balancing construction of the present utility model;
fig. 2 is a top cross-sectional view of the self-balancing pneumatic three-way valve assembly of the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1 and 2, the pneumatic three-way valve group with the self-balancing structure provided by the embodiment of the utility model comprises a guide disc 1, a check spring 2, a check valve clack 3, a nut 4, a gasket 5, a sealing gasket 6, a main valve clack 7, a sealing gasket 8, a valve body 9, a sleeve 10, a valve rod 11, a mounting screw 12, a cylinder cover 13, a piston 14, a cylinder top screw sleeve 15, an O-shaped sealing ring one 16, a dust cover 17, an O-shaped sealing ring two 18, an O-shaped sealing ring three 19, a locking nut 20, an O-shaped sealing ring four 21, a rectangular sealing ring 22, an O-shaped sealing ring five 23, a valve rod sealing support ring 24, an O-shaped sealing ring six 25, a cylinder spring 26, an O-shaped sealing ring seven 27, an O-shaped sealing ring eight 28, an O-shaped sealing ring nine 29, a pressure gauge 30, a regulating valve 31 and the like. The piston 14, the valve rod 11 and the main valve clack 7 are assembled into a movable part through the lock nut 20, the nut 4 and the gasket 5, an O-shaped sealing ring IV 21 and a valve rod sealing support ring 24 are arranged between the valve rod 11 and the piston 14, and an O-shaped sealing ring IV 29 is arranged between the valve rod 11 and the main valve clack 7; the sleeve 10 is arranged in the valve body 9, an O-shaped sealing ring eight 28 is arranged between the sleeve 10 and the valve body 9, a cylinder spring 26 is arranged between a movable part and the sleeve 10, the movable part, the cylinder spring 26 and the sleeve 10 are all arranged in the valve body 9, the cylinder top screw sleeve 15 is arranged on the cylinder cover 13 through threads, the valve rod 11 penetrates through the cylinder top screw sleeve 15, the cylinder cover 13 covers the movable part, a rectangular sealing ring 22 and an O-shaped sealing ring five 23 are arranged between the cylinder cover 13 and the piston 14, and the sealing and guiding functions can be achieved; the dust cover 17 is connected with the cylinder top screw sleeve 15 through threads by assembling the mounting bolt 12 with the valve body 9. The cylinder cover 13 is provided with a compressed air inlet E, compressed air enters the three-way valve cylinder through the air inlet of the cylinder cover 13, compressed air with certain pressure drives the piston 14 to move downwards, and the piston 14 drives the valve rod 11 to act so as to realize the switching of fluid flow directions.
As shown in fig. 2, a regulating valve 31 is provided at the three-way valve block fluid inlet a for regulating the flow rate into the valve block; the check spring 2, the check valve clack 3 and the guide disc 1 of the three-way valve group form a check valve, and the check valve is installed with the valve body 9 through the threads of the guide disc 1, so that the backflow of fluid at the outlet B of the three-way valve group is prevented, and the unidirectional flow of fluid is realized.
A valve rod sealing support ring 24 and 2O-shaped sealing rings four 21 are arranged between the sleeve 10 and the valve rod 11, the valve rod sealing support ring 24 not only can play a role in sealing, but also can play a role in supporting and guiding, the valve rod clamping stagnation is avoided from affecting the function of the three-way valve group, and the reliability of the three-way valve group is improved.
The valve rod 11 is a semi-hollow valve rod with a balance disc, the bottom of the valve rod 11 and the upper end of the valve rod balance disc 11-1 are provided with a fluid inflow port 11-2, an O-shaped seal ring seven 27 is arranged between the valve rod 11 and the sleeve, and the O-shaped seal ring four 21 is used for sealing together to form a balance cavity D between the valve rod balance disc 11-1 and the sleeve, the pressure of fluid in the balance cavity D can balance the pressure of fluid in an inlet A of the three-way valve group on a main valve clack, the requirement of the valve group on the pressure of compressed air is reduced, and the dependence of a system on external guarantee conditions is reduced.
Claims (7)
1. The utility model provides a pneumatic three-way valve group of self-balancing structure, includes valve body, sleeve, movable part, cylinder head, its characterized in that: the movable part is composed of a piston, a valve rod and a main valve flap which are assembled together, a cylinder spring is arranged between the movable part and the sleeve, the movable part, the cylinder spring and the sleeve are all arranged in the valve body, the cylinder cover is arranged at the top of the valve body, the cylinder cover is provided with a compressed air inlet, compressed air enters the three-way valve cylinder through the air inlet of the cylinder cover and is used for driving the piston to move downwards under the compressed air with certain pressure, and the piston drives the valve rod to act so as to realize the switching of the fluid flow direction; a valve rod sealing support ring and an O-shaped sealing ring are arranged between the sleeve and the valve rod, wherein the valve rod sealing support ring is used for sealing, plays a supporting and guiding role, avoids the influence of valve rod clamping stagnation on the function of the three-way valve group, and improves the reliability of the three-way valve group.
2. The self-balancing structural pneumatic three-way valve set according to claim 1, wherein: the piston, the valve rod and the main valve clack are assembled into a movable part through a lock nut, a nut and a gasket.
3. The self-balancing structural pneumatic three-way valve set according to claim 1, wherein: the cylinder head is provided with a cylinder top screw sleeve through threads, a valve rod penetrates through the cylinder top screw sleeve, the cylinder cover is covered on the movable part and is assembled with the valve body through a mounting bolt, and the cylinder top screw sleeve is connected with a dust cover through threads.
4. The self-balancing structural pneumatic three-way valve set according to claim 1, wherein: the valve rod is a semi-hollow valve rod with a balance disc, a fluid inflow port is formed in the bottom of the valve rod and the upper end of the valve rod balance disc, a balance cavity is formed between the valve rod balance disc and the sleeve, the pressure of fluid in the balance cavity can balance the pressure of inlet fluid of the three-way valve set on the main valve clack, the requirement of the valve set on the pressure of compressed air is reduced, and the dependence of a system on external guarantee conditions is reduced.
5. The self-balancing structural pneumatic three-way valve set according to claim 1, wherein: the fluid inlet of the pneumatic three-way valve group is provided with an adjusting valve for adjusting the flow entering the valve group.
6. The self-balancing structural pneumatic three-way valve set according to claim 1, wherein: the fluid outlet of the pneumatic three-way valve group is provided with a check valve for preventing the fluid from flowing backwards and realizing the unidirectional flow of the fluid.
7. The self-balancing structural pneumatic three-way valve set of claim 6, wherein: the check valve consists of a check spring, a check valve clack and a guide disc, and is installed with the valve body through guide disc threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323379655.8U CN221591829U (en) | 2023-12-11 | 2023-12-11 | Pneumatic three-way valve group with self-balancing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323379655.8U CN221591829U (en) | 2023-12-11 | 2023-12-11 | Pneumatic three-way valve group with self-balancing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221591829U true CN221591829U (en) | 2024-08-23 |
Family
ID=92412016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323379655.8U Active CN221591829U (en) | 2023-12-11 | 2023-12-11 | Pneumatic three-way valve group with self-balancing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221591829U (en) |
-
2023
- 2023-12-11 CN CN202323379655.8U patent/CN221591829U/en active Active
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