A diaphragm mounting structure for a diaphragm valve

Abstract

The utility model discloses a diaphragm valve's diaphragm mounting structure relates to diaphragm valve technical field, including the carrier for installing diaphragm, the carrier includes valve body and valve cover, the valve body and valve cover are connected through bolt, the diaphragm is installed in the valve body and valve cover junction, the diaphragm includes support part, elastic part and plugging part, the support part fixed mounting is on the carrier, the elastic part is connected in the inboard of support part, the plugging part is fixed in the elastic part center position, be equipped with the ejector rod on the plugging part, the upper end of ejector rod is connected through quick -release type connecting piece between the actuating mechanism set up on the valve cover, the utility model discloses the quick -release type connecting piece between the actuating mechanism and the diaphragm of setting, has realized the quick assembly and disassembly of diaphragm and actuating mechanism, has effectively improved the replacement efficiency of diaphragm, improves the stability and sealing property of diaphragm installation through the annular recess and annular convex that set up on the diaphragm support part simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm valve technology, specifically a diaphragm mounting structure for a diaphragm valve. Background Technology

[0002] Diaphragm valves, due to their simple structure, leak-free operation, and suitability for media containing particles or high viscosity, have been widely used in pharmaceuticals, bio-fermentation, food and beverage, and fine chemicals. The core functional component of a diaphragm valve—the diaphragm—not only isolates the medium from the actuator but also uses its elastic deformation to open and close the flow channel and regulate flow. However, the diaphragm is highly susceptible to fatigue failure under the combined effects of long-term alternating stress, media erosion, and temperature / pressure cycles, making it the most typical vulnerable component in the entire valve.

[0003] However, in the existing technology, the connection between the diaphragm and the actuator (such as a pneumatic piston, handwheel or electric actuator) generally adopts a complex structure such as multi-level nesting, threaded locking, snap ring or conical surface clamping. This means that when replacing the diaphragm, the operator needs to use special tooling to avoid damaging the diaphragm insert or valve stem sealing surface, which significantly reduces the efficiency of diaphragm replacement.

[0004] Based on this, a diaphragm mounting structure for a diaphragm valve is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a diaphragm mounting structure for a diaphragm valve to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A diaphragm mounting structure for a diaphragm valve includes a carrier for mounting the diaphragm. The carrier includes a valve body and a valve cover, which are connected by bolts. The diaphragm is mounted at the connection between the valve body and the valve cover. The diaphragm includes a support portion, an elastic portion, and a sealing portion. The support portion is fixedly mounted on the carrier. The elastic portion is connected to the inner side of the support portion. The sealing portion is fixed at the center of the elastic portion. A push rod is provided on the sealing portion. The upper end of the push rod is connected to an actuator provided on the valve cover via a quick-release connector.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative: the valve body has an input pipe at one end and an output pipe at the other end, a partition plate in the middle of the valve body, an opening in the partition plate, an arc-shaped groove matching the sealing part in the opening, and an annular stop block on the outside of the opening.

[0010] In one alternative: the upper end of the valve body is provided with a first connecting seat for connecting with the valve cover, the first connecting seat is provided with a support seat for installing the diaphragm, and the support seat is provided with a first annular groove.

[0011] In one alternative: the valve cover includes a cover body, the cover body is provided with a second connecting seat that is bolted to the first connecting seat, the bottom end of the cover body is provided with a pressure block, and the lower end of the pressure block is provided with a second annular protrusion.

[0012] In one alternative embodiment: the actuator includes a piston rod slidably disposed on the cover, the lower end of the piston rod having a connecting groove, a top plate slidably mounted in the connecting groove, and a spring disposed on the top plate.

[0013] In one alternative embodiment: the quick-release connector includes a slot disposed on the inner wall of the connecting groove and a connecting rod disposed on the top rod, wherein the connecting rod is provided with a locking block that matches the slot.

[0014] In one alternative: the upper end of the support portion is provided with a second annular groove that matches the second annular protrusion, and the lower end of the support portion is provided with a first annular protrusion that matches the first annular groove.

[0015] In one alternative: a protective plate is provided on the outside of the sealing part, a spherical groove is provided at the upper end of the sealing part, a ball is provided in the spherical groove, and the ball is fixed to the lower end of the top rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model achieves quick assembly and disassembly of the diaphragm and the actuator through a quick-release connector set between the actuator and the diaphragm, effectively improving the replacement efficiency of the diaphragm. At the same time, the annular groove and annular protrusion set on the diaphragm support improve the stability and sealing of the diaphragm installation.

[0018] 2. This utility model uses a protective plate set on the outside of the diaphragm sealing part. When the valve is closed, the sealing part is sealed in the opening. At the same time, the protective plate is in contact with the annular stop block, which improves the sealing effect. When the valve is opened, the actuator drives the diaphragm to move upward, causing the elastic part to deform upward, driving the protective plate to fit against the outside of the sealing part, thereby reducing the scouring loss of the sealing part by the medium. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the carrier structure in this utility model.

[0021] Figure 3This is a schematic diagram of the valve body in this utility model.

[0022] Figure 4 This is a schematic diagram of the valve cover in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the diaphragm in this utility model.

[0024] Reference numerals in the attached drawings: 100, carrier; 200, valve body; 201, input pipe; 202, output pipe; 203, partition plate; 204, opening; 205, arc-shaped groove; 206, annular stop; 207, first connecting seat; 208, support seat; 209, first annular groove; 300, valve cover; 301, cover body; 302, second connecting seat; 303, pressure block; 304, second annular groove. 305. Protrusion; 306. Piston rod; 307. Connecting groove; 308. Slot; 309. Top plate; 400. Spring; 401. Diaphragm; 402. Support part; 403. Elastic part; 404. Sealing part; 405. Second annular groove; 406. First annular protrusion; 407. Protective plate; 408. Spherical groove; 409. Top rod; 410. Sphere; 411. Connecting rod; 412. Locking block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, such as Figures 1-5As shown, a diaphragm valve diaphragm mounting structure includes a carrier 100 for mounting a diaphragm 400. The carrier 100 includes a valve body 200 and a valve cover 300, which are connected by bolts. The diaphragm 400 is mounted at the connection between the valve body 200 and the valve cover 300. The diaphragm 400 includes a support portion 401, an elastic portion 402, and a sealing portion 403. The support portion 401 is fixedly mounted on the carrier 100. The elastic portion 402 is connected to the inner side of the support portion 401. The sealing portion 403 is fixed at the center of the elastic portion 402. A push rod 408 is provided on the sealing portion 403. The upper end of valve 200 is connected to the actuator mounted on valve cover 300 via a quick-release connector. One end of valve body 200 has an input pipe 201, and the other end has an output pipe 202. A partition plate 203 is located in the middle of valve body 200. The partition plate 203 has an opening 204, and the opening 204 contains an arc-shaped groove 205 that matches the sealing part 403. An annular stop 206 is located outside the opening 204. The upper end of valve body 200 has a first connecting seat 207 for connecting to valve cover 300. The first connecting seat 207 contains a support seat 208 for mounting diaphragm 400. The support seat 208 has... The valve cover 300 includes a cover body 301, a second connecting seat 302 bolted to the first connecting seat 207, a pressure block 303 at the bottom of the cover body 301, a second annular protrusion 304 at the lower end of the pressure block 303, a second annular groove 404 matching the second annular protrusion 304 at the upper end of the support part 401, a first annular protrusion 405 matching the first annular groove 209 at the lower end of the support part 401, a protective plate 406 on the outside of the sealing part 403, and a spherical groove 407 at the upper end of the sealing part 403. The spherical groove 407 contains a... The ball 409 is fixed to the lower end of the push rod 408. During installation, the push rod 408 is connected to the diaphragm 400 through the ball 409. Then, the push rod 408 is connected to the lower end of the actuator through a quick-release connector. Next, the support part 401 of the diaphragm 400 is installed into the support seat 208. At the same time, the valve cover 300 is bolted to the valve body 200, so that the pressure block 303 presses the support part 401. The stable installation and sealing of the support part 401 are ensured by the cooperation between the first annular protrusion 405, the first annular groove 209, the second annular protrusion 304, and the second annular groove 404.

[0027] In one embodiment, such as Figure 4 and Figure 5As shown, the actuator includes a piston rod 305 slidably mounted on the cover 301. The lower end of the piston rod 305 is provided with a connecting groove 306. A top plate 308 is slidably mounted in the connecting groove 306. A spring 309 is provided on the top plate 308. The quick-release connector includes a slot 307 provided on the inner wall of the connecting groove 306 and a connecting rod 410 provided on the top rod 408. The connecting rod 410 is provided with a locking block 411 that matches the slot 307. During installation, the locking block 411 is inserted into the slot 307, and at the same time, the upper end of the connecting rod 410 presses against the top plate 308 and the spring 309. The reaction force of the spring 309 prevents the locking block 411 from disengaging from the slot 307.

[0028] The above embodiments disclose a diaphragm installation structure for a diaphragm valve. By setting a quick-release connector, the snap-fit ​​between the snap-fit ​​block 411 and the snap-fit ​​groove 307 enables quick assembly and disassembly of the diaphragm 400 and the actuator, effectively improving the replacement efficiency of the diaphragm 400. At the same time, the cooperation between the first annular protrusion 405, the first annular groove 209, the second annular protrusion 304, and the second annular groove 404 ensures the stability and sealing of the diaphragm 400 installation.

[0029] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A diaphragm mounting structure for a diaphragm valve, comprising a carrier (100) for mounting a diaphragm (400), the carrier (100) comprising a valve body (200) and a valve cover (300), the valve body (200) and the valve cover (300) being connected by bolts, the diaphragm (400) being mounted at the connection between the valve body (200) and the valve cover (300), characterized in that, The diaphragm (400) includes a support part (401), an elastic part (402), and a sealing part (403). The support part (401) is fixedly installed on the carrier (100). The elastic part (402) is connected to the inside of the support part (401). The sealing part (403) is fixed at the center of the elastic part (402). The sealing part (403) is provided with a push rod (408). The upper end of the push rod (408) is connected to the actuator provided on the valve cover (300) through a quick-release connector.

2. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The valve body (200) has an input pipe (201) at one end and an output pipe (202) at the other end. A partition plate (203) is provided in the middle of the valve body (200). An opening (204) is provided on the partition plate (203). An arc-shaped groove (205) matching the sealing part (403) is provided in the opening (204). An annular stop block (206) is provided on the outside of the opening (204).

3. The diaphragm mounting structure of a diaphragm valve according to claim 2, characterized in that, The valve body (200) has a first connecting seat (207) at its upper end for connecting with the valve cover (300). The first connecting seat (207) has a support seat (208) for installing the diaphragm (400) inside. The support seat (208) has a first annular groove (209).

4. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The valve cover (300) includes a cover body (301), a second connecting seat (302) bolted to the first connecting seat (207) on the cover body (301), a pressure block (303) at the bottom end of the cover body (301), and a second annular protrusion (304) at the lower end of the pressure block (303).

5. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The actuator includes a piston rod (305) slidably disposed on the cover (301), the lower end of the piston rod (305) is provided with a connecting groove (306), a top plate (308) is slidably installed in the connecting groove (306), and a spring (309) is provided on the top plate (308).

6. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The quick-release connector includes a slot (307) on the inner wall of the connecting groove (306) and a connecting rod (410) on the top rod (408). The connecting rod (410) is provided with a locking block (411) that matches the slot (307).

7. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The upper end of the support part (401) is provided with a second annular groove (404) that matches the second annular protrusion (304), and the lower end of the support part (401) is provided with a first annular protrusion (405) that matches the first annular groove (209).

8. The diaphragm mounting structure of a diaphragm valve according to claim 1, characterized in that, The sealing part (403) is provided with a protective plate (406) on the outside, and a spherical groove (407) is provided at the upper end of the sealing part (403). A ball (409) is provided in the spherical groove (407), and the ball (409) is fixed to the lower end of the top rod (408).

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