CN216447494U

CN216447494U - Back pressure valve diaphragm

Info

Publication number: CN216447494U
Application number: CN202123030729.8U
Authority: CN
Inventors: 张齐
Original assignee: Shanghai Longmeng Machinery Co ltd
Current assignee: Shanghai Longmeng Machinery Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-06
Anticipated expiration: 2031-12-06

Abstract

The application relates to the field of back pressure valves, discloses a back pressure valve diaphragm, and it includes the gasket, and the integrative deformation ring that has been fixed in gasket week side, and the integrative solid fixed ring that has in deformation ring week side, the thickness of deformation ring is less than the thickness of gasket, and the thickness of deformation ring is less than solid fixed ring's thickness simultaneously. This application has under the prerequisite of ensureing diaphragm life, improves the effect of the sensitivity of diaphragm pressure deformation.

Description

Back pressure valve diaphragm

Technical Field

The application relates to the field of backpressure valves, in particular to a backpressure valve diaphragm.

Background

At present, the backpressure valve is mostly applied to the outlet end to keep constant pressure, the sensitivity of the backpressure valve is improved on the premise of ensuring the service life of a sealing device, and the backpressure valve becomes the core competitiveness of the field in the future market.

Referring to fig. 1, a back pressure valve comprises a valve body 4, a water inlet flow passage 6 and a water outlet flow passage 1 are respectively arranged at two ends of the valve body 4, a valve cover 2 is connected at the upper end of the valve body 4 through a bolt, a cavity 7 is arranged between the valve cover 2 and the valve body 4, the cavity 7 is communicated with the water outlet flow passage 1 and the water inlet flow passage 6, a diaphragm 5 is arranged in the cavity 7, the diaphragm 5 is corrugated, a spring device 3 is tightly propped against one side of the diaphragm 5, which is far away from the valve body 4, a regulating device for regulating the elastic force of the spring device 3 is arranged at one end of the valve cover 2, which is far away from the valve body 4, one side of the diaphragm 5, which is far away from the spring device 3, is propped against the water outlet flow passage 1, the edge of the diaphragm 5 is fixed at the position where the valve body 4 is connected with the valve cover 2, liquid flows into the cavity 7 through the water inlet flow passage 6, when the pressure of the liquid, which acts on the diaphragm 5, is greater than the elastic force of the spring device 3 acts on the diaphragm 5, the diaphragm 5 is propped up towards the direction far away from the valve body 4, therefore, liquid flows to the water outlet flow passage 1, pressure relief of the backpressure valve is achieved, when the elastic force of the spring device 3 is larger than the pressure of the liquid, the diaphragm 5 abuts against the water outlet flow passage 1 again, the water outlet flow passage 1 is sealed, and constant pressure of an outlet end is guaranteed.

To the correlation technique among the above-mentioned, in order to make things convenient for production and processing, the whole thickness of diaphragm 5 is unanimous, and in the use, 5 middle parts of diaphragm are compressed tightly by the spring holder for a long time, and diaphragm 5 easily receives the extrusion and damages, if increase 5 whole thickness of diaphragm, though can avoid 5 middle parts of diaphragm to receive the extrusion and damage to a certain extent, but reduced diaphragm 5 to pressure variation then produce the sensitivity of deformation.

SUMMERY OF THE UTILITY MODEL

In order to improve the sensitivity of diaphragm pressure deformation under the prerequisite of ensureing diaphragm life, this application provides a back pressure valve diaphragm.

The application provides a back pressure valve diaphragm adopts following technical scheme:

the utility model provides a back pressure valve diaphragm, includes the gasket, the integrative shape ring that has been fixed in gasket week side, the integrative solid fixed ring that has in deformation ring week side, the thickness of shape ring is less than the thickness of gasket, the thickness of shape ring is less than simultaneously gu fixed ring's thickness.

Through adopting above-mentioned technical scheme, gu fixed ring supports tightly and is fixed in the back pressure valve, the gasket is used for supporting tightly sealed, liquid direct action in the back pressure valve is on the deformation ring, when liquid produced enough big pressure, with deformation ring jack-up, drive gasket jack-up, thereby reach the purpose of pressure release, when the pressure of liquid is not enough with deformation ring jack-up, the gasket supports tightly sealed again, reach the requirement that keeps exit end constant pressure, adopt thicker gasket can reduce the gasket damaged probability under the extrusion, the life of structure has been strengthened, adopt thinner deformation ring can make deformation ring deformation sensitivity more under the effect of pressure, great improvement diaphragm sensitivity.

Preferably, one side of the sealing plate is in the same plane as one side of the deformation ring and forms a resilient contact surface.

Through adopting above-mentioned technical scheme, the side of gasket and deformation ring supports tightly in spring assembly simultaneously, can increase the area of spring assembly working face like this, improves overall structure intensity.

Preferably, one side of the fixing ring close to the elastic contact surface is in the same plane with the elastic contact surface.

Through adopting above-mentioned technical scheme, solid fixed ring adopts such design to reduce the difficult degree of processing on the one hand, and on the other hand one side of solid fixed ring can avoid appearing stress concentration's phenomenon in the edges and corners position with the elasticity contact surface in the coplanar, improves holistic use strength.

Preferably, a transition section is integrally fixed between the deformation ring and the sealing sheet on one side far away from the elastic contact surface, and the thickness of the transition section gradually increases along the axial direction close to the deformation ring.

Through adopting above-mentioned technical scheme, increase the changeover portion and can make the joint strength between deformation ring and the gasket when the deformation ring upwards jacks up, improve the life of structure.

Preferably, a transition ring is integrally fixed between the deformation ring and the fixing ring on one side far away from the elastic contact surface, and the thickness of the transition ring is gradually reduced along the axial direction close to the deformation ring.

Through adopting above-mentioned technical scheme, the deformation ring jack-up makes again and solid fixed ring junction has great pulling force, increases the transition ring and can avoid appearing the edges and corners, reduces stress concentration's phenomenon, has improved the life of structure greatly.

Preferably, the cross section of the deformation ring is corrugated.

Through adopting above-mentioned technical scheme, the deformation length of deformation ring when being stretched can be improved greatly to the deformation ring that uses the flute form, improves the sensitivity that deformation ring deformed under pressure.

Preferably, the cross section of the deformation ring is in a circular arc curve shape.

Through adopting above-mentioned technical scheme, adopt circular-arcly, can avoid deformation ring edges and corners to appear, reduce stress concentration, avoid the problem that deformation ring ftractures to a certain extent, improved holistic life.

Preferably, a sealing conical plug body is fixed on the side surface, far away from the elastic contact surface, of the sealing sheet.

By adopting the technical scheme, the whole structure can be automatically corrected when the seal is deviated, so that the seal conical plug body is accurately sealed in the water outlet flow channel, and the sealing reliability is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

the deformation ring with the thickness smaller than that of the sealing sheet is adopted, so that the deformation of the deformation ring is more sensitive when the deformation ring is subjected to liquid pressure.

Adopt thickness to compare in the thick gasket of deformation ring, can reduce the probability of damage under spring assembly extrusion, improved overall structure's life.

Adopt thickness to compare in the solid fixed ring that deformation ring is thicker, can reduce the damaged probability under the extrusion of valve body and valve gap, improved this life that can carry the structure.

By using the sealing conical plug body, the whole structure can realize accurate alignment when being sealed, the phenomenon of deviation can not occur, and the sealing reliability is greatly improved.

Drawings

Fig. 1 is a schematic view of a back pressure valve according to the related art.

Fig. 2 is a schematic view of a back pressure valve diaphragm structure according to embodiment 1 of the present application.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view of a back pressure valve diaphragm of embodiment 2 of the present application.

Fig. 5 is a sectional view of a back pressure valve diaphragm of embodiment 3 of the present application.

Fig. 6 is a sectional view of a back pressure valve diaphragm of embodiment 4 of the present application.

Fig. 7 is a sectional view of a back pressure valve diaphragm of embodiment 5 of the present application.

Reference numerals: 1. a water outlet flow channel; 2. a valve cover; 3. a spring device; 4. a valve body; 5. a membrane; 6. a water inlet flow channel; 7. a cavity; 10. sealing the sheet; 11. a deformation ring; 12. a fixing ring; 13. an elastic contact surface; 14. a transition section; 15. a transition ring; 16. the conical plug body is sealed.

Detailed Description

The present application is described in further detail below with reference to figures 2-7.

The embodiment of the application discloses back pressure valve diaphragm.

Example 1:

referring to fig. 2 and 3, a back pressure valve membrane, including the gasket 10 that is used for sealed, the gasket 10 week is surveyed integrative fixed and is had deformation ring 11, deformation ring 11 week is surveyed integrative fixed and is had fixed ring 12, the thickness of deformation ring 11 is less than the thickness of gasket 10, the thickness of deformation ring 11 is less than fixed ring 12's thickness simultaneously, adopt such design, use thicker gasket 10 can reduce the damaged probability under spring assembly's extrusion, use thinner deformation ring 11 to set up between gasket 10 and fixed ring 12, can improve the sensitivity that deformation ring 11 received liquid pressure deformation.

Referring to fig. 2 and 3, one side of the sealing sheet 10 and one side of the deformation ring 11 are in the same plane and form an elastic contact surface 13, and one side of the fixing ring 12 close to the elastic contact surface 13 and the elastic contact surface 13 are in the same plane, so that the liquid pressure acting on the deformation ring 11 can be directly applied to one end of the spring device close to the elastic contact surface 13, and the probability of breakage of the deformation ring 11 under extrusion is reduced.

The implementation principle of the embodiment 1 is as follows: when the pressure relief valve is used, the fixing ring 12 is arranged between the valve body and the valve cover, the valve body and the valve cover are fixed tightly through the bolt, the fixing ring 12 is tightly fixed between the valve body and the valve cover, the elastic contact surface 13 is tightly abutted to the spring device, one side, far away from the elastic contact surface 13, of the sealing sheet 10 tightly abuts against the water outlet flow channel to achieve the sealing effect, liquid in the water inlet flow channel flows into the cavity and acts on the deformation ring 11 through liquid pressure, when the liquid pressure acting on the deformation ring 11 is larger than the elastic force acting on the elastic contact surface 13 through the spring device, the sealing sheet 10 upwards jacks up to be far away from the water outlet flow channel to achieve the pressure relief effect, when the liquid pressure acting on the deformation ring 11 is smaller than the elastic force acting on the elastic contact surface 13 through the spring device, the sealing sheet 10 is in contact with the water outlet flow channel to achieve the requirement of keeping constant pressure of an outlet end.

Example 2:

referring to fig. 4, the difference between this embodiment and embodiment 1 is that a transition section 14 is integrally fixed between the deformation ring 11 and the sealing piece 10 on a side away from the elastic contact surface 13, the thickness of the transition section 14 gradually increases along the axial direction close to the deformation ring 11, the transition section 14 can increase the cross section of the connection between the deformation ring 11 and the sealing piece 10, and the transition section 14 has no edge angle, so that the phenomenon of stress concentration does not occur, and the connection strength between the deformation ring 11 and the sealing piece 10 can be increased.

Referring to fig. 4, a transition ring 15 is integrally fixed on one side of the deformation ring 11 and the fixing ring 12 away from the elastic contact surface 13, the thickness of the transition ring 15 is close to the axial direction of the deformation ring 11 and gradually decreases, the transition section 14 is increased to increase the section between the deformation ring 11 and the fixing ring 12, the transition ring 15 has no edge angle, the phenomenon of stress concentration cannot occur, and when the deformation ring 11 is close to the spring device to be jacked, the connection strength between the deformation ring 11 and the fixing ring 12 can be increased.

The implementation principle of the embodiment 2 is as follows: compared with embodiment 1, when the deformation ring 11 is jacked close to the spring device, the section of the joint between the deformation ring 11 and the fixed ring 12 and the sealing piece 10 is larger, and the transition section 14 and the transition ring 15 are beneficial to increasing the connection strength between the deformation ring 11 and the fixed ring 12 and the sealing piece 10 when in use.

Example 3:

referring to fig. 5, the present embodiment is different from embodiment 1 in that the deformable ring 11 has a corrugated cross section, and the corrugated deformable ring 11 has a V-shaped cross section.

The implementation principle of the embodiment 3 is as follows: compared with the embodiment 1, when the sealing gasket is used, the liquid pressure acts on the corrugated deformation ring 11, and the method can have more elastic expansion lengths when the corrugated deformation ring 11 is jacked close to the spring device under the liquid pressure, so that the sealing gasket 10 is more conveniently jacked, and the deformation sensitivity of the deformation ring 11 is improved.

Example 4:

referring to fig. 6, the present embodiment is different from embodiment 3 in that the cross section of the deformable ring 11 is in a circular arc curve shape, and the cross section of the circular arc curve shaped deformable ring 11 is in an S-shaped corrugation.

The implementation principle of the embodiment 4 is as follows: compared with embodiment 3, when in use, the liquid pressure acts on the deformation ring 11 with the arc curve shape, and the edge angle on the deformation ring 11 is reduced by adopting the method, so that the deformation ring 11 is not easy to damage when being stretched, and the strength of the deformation ring 11 is improved.

Example 5:

referring to fig. 7, the present embodiment is different from embodiment 1 in that a sealing conical plug 16 is fixed to a side surface of the sealing sheet 10 away from the elastic contact surface 13, the sealing conical plug 16 is in a circular truncated cone shape, and a cross section of the sealing conical plug 16 gradually decreases along a direction away from the sealing sheet.

The implementation principle of the embodiment 5 is as follows: compared with the embodiment 1, when in use, the sealing conical plug body 16 is tightly propped against the water outlet flow channel, and the conical shape is adopted during work, so that the whole structure can not deviate during sealing, the sealing conical plug body 16 is accurately propped against the water outlet flow channel, and the sealing reliability is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A back pressure valve diaphragm characterized by: including gasket (10), gasket (10) week side an organic whole is fixed and is had deformation ring (11), deformation ring (11) week side an organic whole is fixed and is had solid fixed ring (12), the thickness of deformation ring (11) is less than the thickness of gasket (10), the thickness of deformation ring (11) is less than simultaneously gu the thickness of solid fixed ring (12).

2. A back pressure valve diaphragm according to claim 1, wherein: one side of the sealing sheet (10) and one side of the deformation ring (11) are in the same plane and form an elastic contact surface (13).

3. A back pressure valve diaphragm according to claim 2, wherein: one side of the fixing ring (12) close to the elastic contact surface (13) is in the same plane with the elastic contact surface (13).

4. A back pressure valve diaphragm according to claim 2 or 3, wherein: a transition section (14) is integrally fixed between the deformation ring (11) and the sealing piece (10) at one side far away from the elastic contact surface (13), and the thickness of the transition section (14) is gradually increased along the axial direction close to the deformation ring (11).

5. A back pressure valve diaphragm according to claim 2 or 3, wherein: the shape change ring (11) with between the solid fixed ring (12) in keeping away from one side of elasticity contact surface (13) an organic whole is fixed with transition ring (15), the thickness of transition ring (15) is along being close to the axial direction of shape change ring (11) reduces gradually.

6. A back pressure valve diaphragm according to claim 1, wherein: the section of the deformation ring (11) is corrugated.

7. A back pressure valve diaphragm according to claim 6, wherein: the section of the deformation ring (11) is in a circular arc curve shape.

8. A back pressure valve diaphragm according to claim 2, wherein: and a sealing conical plug body (16) is fixed on the side surface of the sealing sheet (10) far away from the elastic contact surface (13).