Novel durable rubber diaphragm and vacuum diaphragm valve
By designing a novel main and secondary sidewall structure for the rubber diaphragm, and combining it with a tray and spring, the problem of rubber diaphragm wear in vacuum diaphragm valves was solved, achieving durability and sealing performance of the rubber diaphragm, extending its service life and reducing the size of the vacuum valve.
Patent Information
- Application Number
- CN202520307671.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The rubber diaphragm of existing vacuum diaphragm valves is prone to wear and tear during frequent opening and closing, which shortens its service life.
A novel rubber diaphragm was designed, comprising a main sidewall and a secondary sidewall. The main sidewall is perpendicular to the bottom surface, and the secondary sidewall is parallel to the main sidewall. During displacement, the secondary sidewall adheres tightly to the inner wall of the upper shell to provide support. After the main sidewall flips over, it also adheres tightly to the inner wall of the upper shell. Combined with the design of a tray and a spring, a double seal is achieved and the displacement stroke is extended, reducing wear.
The support design of the main and secondary sidewalls reduces the wear of the rubber diaphragm and extends its service life. The combination of double sealing and limiting grooves improves the sealing effect and reduces the overall volume of the vacuum valve.
Smart Images
Figure CN223579086U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pneumatic control valve technical field especially is related to a novel durable rubber diaphragm and vacuum diaphragm valve. BACKGROUND
[0002] The existing vacuum diaphragm valve often uses rubber diaphragm as driving element. When vacuum is connected to the driving interface of the vacuum diaphragm valve, the vacuum suction force will drive the rubber diaphragm to deform and overturn, thereby driving the internal valve core to act to open the valve. When the vacuum suction force disappears, the rubber diaphragm restores the deformation to drive the valve core to act to close the valve. Therefore, the rubber diaphragm is an essential key part of the vacuum diaphragm valve.
[0003] Due to the frequent opening and closing of the vacuum diaphragm valve, the rubber diaphragm frequently switches between deformation and recovery of deformation, which is prone to product wear and tear, thereby shortening the service life of the rubber diaphragm. SUMMARY
[0004] The utility model provides a novel durable rubber diaphragm and vacuum diaphragm valve, which has a reasonable structure design and can prolong the service life of the rubber diaphragm.
[0005] The utility model provides a novel durable rubber diaphragm, which comprises a circular bottom surface and a main side wall, the main side wall is formed by extending upward from the edge of the circular bottom surface, the upper edge of the main side wall is bent and overturned and extends downward to the middle part of the main side wall to form a secondary side wall, and the bottom edge of the secondary side wall extends circumferentially to form a connecting ring edge.
[0006] The main side wall is vertically arranged with the bottom surface, and the secondary side wall is arranged in parallel with the main side wall.
[0007] Further, the bottom surface is concave to form a boss, and the middle part of the boss has a circular hole.
[0008] Further, the inner side of the connecting ring edge is provided with a fitting groove for installation, the two side groove walls are perpendicular to the groove bottom wall, and the two side groove walls are arranged in parallel.
[0009] The utility model also provides a vacuum diaphragm valve, which comprises an upper shell, a lower shell, a valve plate, a valve port and a valve plate seat, the upper shell and the lower shell are detachably connected, the valve plate seat is arranged in the middle part of the valve body, the valve port is arranged in the lower part of the valve body, the tail end of the valve plate penetrates through the valve plate seat and is located between the valve plate seat and the valve port, and characterized in that the rubber diaphragm and a spring are further included, the rubber diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed and not in communication with each other by the rubber diaphragm, the rubber diaphragm is fixedly connected with the head end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper shell.
[0010] Further, the port of the upper shell is provided with a flange adapted to the fitting groove of the rubber diaphragm.
[0011] Further, the port of the upper shell is provided with a flange adapted to the fitting groove of the rubber diaphragm.
[0012] Further, the rubber diaphragm is fixedly installed on the first end of the valve plate through the tray.
[0013] Further, the tray comprises a first tray sheet and a second tray sheet, the first tray sheet is arranged above the second tray sheet, the first tray sheet and the second tray sheet clamp the rubber diaphragm in the middle part, and the middle part of the first tray sheet and the second tray sheet are provided in a shape adapted to the boss of the rubber diaphragm.
[0014] Further, the middle part of the first tray sheet is provided with a limiting part for limiting the position of the spring.
[0015] Further, the edge of the first tray sheet extends upward to form an extension wall, and the extension wall is close to the main side wall of the rubber diaphragm.
[0016] The beneficial effects of the present application are:
[0017] The rubber diaphragm comprises a main side wall, a secondary side wall and a bottom surface, the main side wall and the secondary side wall are parallel to each other and perpendicular to the bottom surface, in the displacement process of the rubber diaphragm, the secondary side wall is always close to the inner wall of the upper shell, so that the support force of the inner wall of the upper shell can be obtained at all times, and after the main side wall is turned, the main side wall can also be close to the inner wall of the upper shell, that is, in the displacement process of the rubber diaphragm, the main side wall can also obtain the support force provided by the inner wall of the upper shell, so that the wear degree of the rubber diaphragm is reduced, and the service life of the rubber diaphragm is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a structural schematic diagram of the present application Figure 1 ;
[0019] Figure 2 is a structural schematic diagram of the present application Figure 2 ;
[0020] Figure 3 is a structural schematic diagram of the present application Figure 3 ;
[0021] Figure 4 is a combination schematic diagram of the rubber diaphragm, the tray and the valve plate seat of the present application;
[0022] Figure 5 is a structural schematic diagram of the present application installed on a vacuum valve Figure 1 ;
[0023] Figure 6 yes Figure 5 Enlarged view of A2;
[0024] Figure 7 This is a schematic diagram of the structure of this utility model installed on a vacuum valve. Figure 2 ;
[0025] Figure 8 yes Figure 7 Enlarged view of A1;
[0026] In the picture:
[0027] Rubber diaphragm 1, bottom surface 11, main side wall 12, secondary side wall 13, connecting ring edge 14, first boss 15, round hole 16, fitting groove 17, upper shell 2, flange 21, groove 22, first gas interface 23, second interface 24, lower shell 3, valve plate 4, valve port 5, valve plate seat 6, spring 7, tray 8, first tray piece 81, limiting groove 812, limiting part 813, guide slope 8131, second tray piece 82, second boss 811, third boss 822. Detailed Implementation
[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] Example:
[0030] like Figures 1-3 As shown, a novel durable rubber diaphragm 1 includes a circular bottom surface 11 and a main sidewall 12. The main sidewall is formed by the upward extension of the circular bottom edge. The upper edge of the main sidewall is bent and extended downward to the middle of the main sidewall to form a secondary sidewall 13. The bottom edge of the secondary sidewall extends circumferentially to form a connecting ring edge 14. The main sidewall is perpendicular to the bottom surface, and the secondary sidewall is parallel to the main sidewall. A first boss 15 is formed by a recess in the bottom surface, and a circular hole 16 is provided in the middle of the boss. A fitting groove 17 for installation is provided on the inner side of the connecting ring edge (between the connecting ring edge and the secondary sidewall). The two side walls of the fitting groove are perpendicular to the bottom wall of the groove and are parallel to each other.
[0031] Install the rubber diaphragm onto the vacuum diaphragm valve, such as Figures 5-8As shown, the vacuum diaphragm valve includes an upper shell 2, a lower shell 3, a valve plate 4, a valve port 5, a valve plate seat 6, a spring 7, and the above-mentioned rubber diaphragm 1. The upper shell and the lower shell are detachably connected (can be quick release, screw connection). The valve plate seat is arranged in the middle of the valve body, the valve port is arranged in the lower part of the valve body, the tail end (valve head) of the valve plate passes through the valve plate seat and is located between the valve plate seat and the valve port, the rubber diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed by the rubber diaphragm and do not communicate with each other, the rubber diaphragm is fixedly connected with the front end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper shell. When the rubber diaphragm deforms and recovers, it can drive the tail end (valve head) of the valve plate to move back and forth between the valve plate seat and the valve port; when the rubber diaphragm deforms upward, it can press the spring and recover under the action of the spring.
[0032] Specifically, when the rubber diaphragm is clamped between the upper shell and the lower shell, the port of the upper shell is provided with a flange 21 matched with the fitting groove 17 of the rubber diaphragm, and a groove 22 matched with the connecting ring edge of the rubber diaphragm. Through the cooperation of the fitting groove and the flange, and the cooperation of the connecting ring edge and the groove, the rubber diaphragm and the upper shell and the lower shell achieve the effect of sealing, double sealing, and better effect.
[0033] As shown in the drawings, Figure 4 The rubber diaphragm is fixedly installed on the front end of the valve plate through a tray 8. Specifically, the tray includes a first tray sheet 81 and a second tray sheet 82. The first tray sheet is arranged above the second tray sheet, and the first tray sheet and the second tray sheet clamp the rubber diaphragm in the middle. The middle parts of the first tray sheet and the second tray sheet are respectively provided with a second boss 811 and a third boss 822 matched with the bosses of the rubber diaphragm. The combination structure of the first boss 15, the second boss 811 and the third boss 822 is matched with the structure of the valve plate seat. In the limited space, the displacement stroke of the rubber diaphragm, i.e. the displacement stroke of the valve plate, is lengthened. Therefore, compared with other vacuum valves that need the same displacement stroke, the volume of the upper shell can be reduced, and the purpose of reducing the overall volume of the vacuum valve is achieved.
[0034] The tray and the valve plate seat are both provided with through holes matched with the upper circular hole 16 of the rubber diaphragm, which is used for the main shaft of the valve plate to pass through during installation.
[0035] In the embodiment, the edge of the first tray sheet extends upward to form an extension wall, which is close to the main side wall of the rubber diaphragm; when the rubber diaphragm is installed, the bottom surface thereof is clamped between the first tray sheet and the second tray sheet, the main side wall thereof is close to the outside of the extension wall, and the auxiliary side wall thereof is close to the inner wall of the upper shell; when the rubber diaphragm is displaced upward, each point on the main side wall is close to the inner wall of the upper shell after turning upward during the rising process; for example, four points A, B, C and D are taken on the main side wall and the auxiliary side wall; when the rubber diaphragm is not deformed and displaced, the point A is on the auxiliary side wall and close to the inner wall of the upper shell, the point B is on the main side wall and has the same height as the point A, the point C is on the main side wall and below the point B, and the point D is on the main side wall and below the point C; after the rubber diaphragm is deformed and displaced upward, the four points A, B, C and D are all close to the inner wall of the upper shell, and the point A is at the lowermost position, the point B is above the point A, the point C is above the point B, and the point D is above the point C; since the auxiliary side wall is always close to the inner wall of the upper shell during the displacement process of the rubber diaphragm, the support force of the inner wall of the upper shell can be obtained all the time, and the main side wall can also be close to the upper shell after turning upward, that is, the main side wall can also obtain the support force provided by the inner wall of the upper shell during the displacement process of the rubber diaphragm, so that the wear degree of the rubber diaphragm is reduced, and the service life of the rubber diaphragm is prolonged.
[0036] The upper shell is also provided with a first gas interface 23 and a second gas interface 24; when the first gas interface 23 is connected to vacuum and the second gas interface is connected to atmospheric pressure, the rubber diaphragm is deformed, the valve plate is displaced toward the upper shell and presses the spring, and the opening of the vacuum valve is realized at this time; in the embodiment, the first spring is selected to have sufficient free length and sufficient compression amount, so that when the second gas interface and the first gas interface are connected to atmospheric pressure, the gas pressure in the upper shell and the lower shell is the same, at this time, the compression spring in the upper shell has no vacuum suction force, only the compression force of the spring acts on the rubber diaphragm, the huge spring compression force of the first spring will promote the rubber diaphragm to gradually recover the deformation under the action of the force of the first spring, and the spring force of the rubber diaphragm and the action force of the spring jointly drive the valve plate to move toward the valve port, so that the closing of the vacuum valve is realized, and the spring is in a semi-compressed state at the time of closing.
[0037] In the embodiment, in order to make the spring be in a fixed position, the middle part of the first tray sheet is provided with a limiting portion 813 for limiting the position of the spring; the limiting portion is circular and has a height which is basically flat with the second boss; in the embodiment, the height of the limiting portion is slightly lower than the height of the second boss, and an annular limiting groove 812 is formed between the limiting portion and the second boss, and the lower end of the spring is arranged in the annular limiting groove, so that the spring cannot be displaced and affect the opening of the vacuum valve due to the limitation of the limiting groove. More preferably, the limiting portion 813 has a guide slope 8131 for guiding the spring into the limiting groove 812, and the guide slope is arranged on the side of the upper end of the limiting portion which faces the second boss.
[0038] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the limitation of the utility model. In addition, the term "first", "second", "third" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0039] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should be broad sense, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication. For ordinary skilled in the art, the above-mentioned terms in the utility model can be understood according to the specific meaning of the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined as long as there is no conflict between them.
[0040] It should be emphasized that: the above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the scope of the utility model technical scheme.
Claims
1. A new and improved durable rubber diaphragm characterized by, The bottom surface is circular, and the main sidewall is formed by extending upward from the edge of the circular bottom surface, the upper edge of the main sidewall is bent and turned over and extends downward to the middle part of the main sidewall to form a secondary sidewall, and the bottom edge of the secondary sidewall extends circumferentially to form a connecting ring edge; The main sidewall is perpendicular to the bottom surface, and the secondary sidewall is parallel to the main sidewall.
2. The novel, durable rubber septum of claim 1, wherein, The bottom surface is concave to form a boss, and the middle part of the boss has a circular hole.
3. The novel, durable rubber septum of claim 1, wherein, The inner side of the connecting ring edge is provided with a fitting groove for installation, the two side groove walls are perpendicular to the groove bottom wall, and the two side groove walls are parallel.
4. A vacuum diaphragm valve comprising an upper shell, a lower shell, a valve plate, a valve port and a valve plate seat, the upper shell is detachably connected with the lower shell, the valve plate seat is arranged in the middle of the valve body, the valve port is arranged in the lower part of the valve body, the tail end of the valve plate passes through the valve plate seat and is located between the valve plate seat and the valve port, characterized in that, The rubber diaphragm is clamped between the upper shell and the lower shell, so that the upper shell and the lower shell are sealed from each other by the rubber diaphragm, the rubber diaphragm is fixedly connected to the first end of the valve plate, and the spring is arranged between the rubber diaphragm and the upper shell.
5. The vacuum diaphragm valve according to claim 4, characterized in that The port of the upper shell is provided with a flange matched with the fitting groove of the rubber diaphragm.
6. The vacuum diaphragm valve of claim 4, wherein, The port of the upper shell is provided with a groove matched with the connecting ring edge of the rubber diaphragm.
7. The vacuum diaphragm valve of claim 4, wherein, The rubber diaphragm is fixedly installed on the first end of the valve plate through the tray.
8. The vacuum diaphragm valve according to claim 7, characterized in that The tray includes a first tray piece and a second tray piece, the first tray piece is arranged above the second tray piece, the first tray piece and the second tray piece clamp the rubber diaphragm in the middle part, and the middle part of the first tray piece and the second tray piece is arranged in a shape matched with the boss of the rubber diaphragm.
9. The vacuum diaphragm valve according to claim 8, characterized in that The first tray piece is provided with a limiting part for limiting the position of the spring.
10. The vacuum diaphragm valve of claim 3, wherein, The edge of the first tray piece extends upward to form an extension wall, and the extension wall is close to the main sidewall of the rubber diaphragm.