Diaphragm valve with high sealing performance
By setting the limit ring and ring groove structure in the diaphragm valve, the sealing problem caused by the gap between the diaphragm and the valve body is solved, and higher sealing and stability are achieved.
Patent Information
- Application Number
- CN202422307369.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-21
AI Technical Summary
The existing diaphragm valves have poor sealing properties due to the gap between the diaphragm and the valve port, and fluid is prone to flow out of the gap.
By setting a limit ring on the diaphragm and opening an annular groove on the valve body, the limit ring is inserted into the annular groove, and the slot wall of the annular groove limits the limit ring, thereby reducing the gap between the diaphragm and the valve body and enhancing sealing.
Effectively reduce the flow of fluid from the diaphragm and valve body gap, and improve the sealing and stability of the diaphragm valve.
Smart Images
Figure CN223090050U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of diaphragm valves, and in particular to a high-sealing diaphragm valve. Background Art
[0002] A diaphragm valve is a globe valve that uses a diaphragm as a closing member to seal the flow channel, cut off the fluid, and separate the inner cavity of the valve body and the inner cavity of the valve cover. The diaphragm valve can be applied to fields with high hygiene requirements such as food, beverage, and medicine.
[0003] In related technologies, a diaphragm valve includes a valve body. A valve port is formed on the valve body. A valve cover is provided on the valve body. The valve cover is provided with an operating assembly. The operating assembly is provided with an operating plate. A diaphragm is provided on the operating plate. The diaphragm is located between the operating plate and the valve body.
[0004] Since the diaphragm is arranged on the operating plate and the operating plate abuts against the valve port, the diaphragm seals the valve port, achieving the sealing of the valve port. However, since there is still a certain gap between the diaphragm and the valve port, it is possible that the fluid flows out from the gap, resulting in poor sealing performance of the diaphragm valve. Utility Model Content
[0005] In order to improve the problem of poor sealing performance of the diaphragm valve, this application provides a high-sealing diaphragm valve.
[0006] A high-sealing diaphragm valve provided by this application adopts the following technical solutions:
[0007] A high-sealing diaphragm valve includes a valve body. A valve port is formed on the valve body. A valve cover is provided on the valve body. The valve cover is provided with an operating assembly. The operating assembly is provided with an operating plate. A diaphragm is provided on the operating plate. The operating assembly drives the diaphragm to seal the valve port. A limiting ring is provided on the diaphragm. A ring groove for inserting the limiting ring is formed on the valve body. When the limiting ring is located in the ring groove, the diaphragm abuts against the valve body.
[0008] By adopting the above technical solutions, the operating assembly drives the diaphragm to seal the valve port. Since the limiting ring is inserted into the ring groove, the groove wall of the ring groove limits the limiting ring, enabling the limiting ring to fill the gap between the diaphragm and the valve body, reducing the gap between the diaphragm and the valve body, so that it is difficult for the fluid to flow out from the gap between the diaphragm and the valve body, increasing the sealing performance of the diaphragm valve.
[0009] Optionally, the operating assembly includes an operating rod and an operating block. The operating rod is threadedly connected to the valve cover. The operating block is threadedly connected to the operating rod. The operating plate is located on the moving path of the operating rod. When the operating block rotates, the operating block drives the operating rod to approach the valve body.
[0010] By adopting the above technical solution, the operating block is threadedly connected to the operating rod, enabling the staff to drive the operating block to rotate. Moreover, the operating rod is threadedly connected to the valve cover, allowing the operating rod to slide on the valve cover. Additionally, since the operating plate is located on the moving path of the operating rod, the operating rod can drive the operating plate to move towards the valve body, enabling the diaphragm on the operating plate to smoothly abut against the valve body. By threadedly connecting the operating block to the operating rod, the staff can more precisely control the moving displacement of the operating rod, enabling the staff to master the moving path of the operating plate, so that the staff does not need to overly squeeze the diaphragm with the operating plate, thereby avoiding damage to the diaphragm.
[0011] Optionally, a rotating cover is fixedly connected to the operating block, and a plurality of rotating blocks are provided on the rotating cover. The plurality of rotating blocks are circumferentially distributed along the rotating cover.
[0012] By adopting the above technical solution, due to the circumferential distribution of the rotating blocks along the rotating cover, the rotating blocks protrude from the rotating cover, enabling the staff to abut against the rotating blocks, so that the staff can better rotate the rotating cover through the rotating blocks.
[0013] Optionally, a clamping strip is slidably connected to the rotating cover, and a clamping groove for inserting the clamping strip is formed on the valve cover. When the clamping strip is inserted into the clamping groove, the valve cover and the rotating cover are fixed to each other.
[0014] By adopting the above technical solution, the staff slides the clamping strip to insert the clamping strip into the clamping groove. The groove wall of the clamping groove limits the clamping strip, enabling the clamping strip and the valve cover to be fixed to each other, keeping the rotating cover in a locked state, reducing the possibility of the rotating cover being accidentally touched and rotated by people, enabling the rotating cover to more stably fix the operating rod, and reducing the situation where the diaphragm fails to seal the valve port due to vibration or accidental rotation of the rotating cover by people, thereby increasing the stability of the diaphragm valve.
[0015] Optionally, a moving spring is provided on the clamping strip, and the moving spring drives the clamping strip to insert into the clamping groove.
[0016] By adopting the above technical solution, when people do not need to drive the rotating cover to rotate, the moving spring drives the clamping strip to insert into the clamping groove, enabling the clamping strip to automatically insert into the clamping groove, realizing the mutual fixation of the clamping strip and the valve cover, and enabling people not to manually move the clamping strip, avoiding the situation where the rotating cover is not in a restricted state because people forget to slide the clamping strip.
[0017] Optionally, a fixing ring is rotatably connected to the rotating block, a fixing block is provided on the clamping strip, and a fixing hole for the fixing block to pass through is formed on the end face of the fixing ring. When the fixing block is located in the fixing hole, the clamping strip disengages from the clamping groove.
[0018] By adopting the above technical solution, people first rotate the fixing ring, then slide the clamping strip, so that one end of the fixing block passes through the fixing hole and moves to the other end of the fixing ring. At this time, the clamping strip disengages from the clamping groove. Then rotate the fixing ring so that the fixing hole is not on the moving path of the fixing block, so that the fixing block is limited by the fixing ring, restricting the clamping strip from moving towards the clamping groove, thereby realizing the fixing of the clamping strip, enabling people to fix the clamping strip manually when rotating the rotating cover, reducing the operation steps of people, and facilitating the rotation operation of the rotating cover by people.
[0019] Optionally, a stop spring is provided on the rotating cover, and a stop block is provided on the stop spring. The stop spring drives the stop block to insert into the fixing hole. When the stop block is located in the fixing hole, the clamping strip disengages from the clamping groove.
[0020] By adopting the above technical solution, the stop spring drives the stop block to insert into the fixing hole, and the stop block restricts the rotation of the fixing ring, so that the fixing block cannot drive the fixing ring to rotate and cause the fixing block to be unable to move towards the clamping groove, so that the clamping strip cannot be located in the clamping groove, realizing the fixing of the clamping strip; people can rotate the fixing ring to the position where the stop block pops out to realize the fixing of the fixing ring, enabling people to not need to determine the locking of the fixing ring.
[0021] Optionally, the surface of the stop block away from the valve cover has an inclined surface, and the distance between the inclined surface and the valve cover gradually decreases in the direction away from the stop spring. When the stop block is inserted into the fixing hole, the inclined surface is located outside the fixing hole.
[0022] By adopting the above technical solution, since the surface of the stop block away from the valve cover has an inclined surface and the inclined surface is located outside the fixing hole, the fixing block cannot drive the stop block to move through the inclined surface, so as to ensure the limiting effect of the stop block on the fixing block; people press the stop block to make the inclined surface located in the fixing hole, and the fixing block can slide along the inclined surface, so that the fixing block can automatically drive the stop block towards the direction of the stop spring, enabling the fixing block to pass through the fixing hole, realizing the insertion of the clamping strip into the clamping groove, reducing the operation steps of the staff, and facilitating the smooth insertion of the clamping strip into the clamping groove.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By operating the component to drive the diaphragm to block the valve port, since the limiting ring is inserted into the annular groove, the groove wall of the annular groove limits the limiting ring, enabling the limiting ring to fill the gap between the diaphragm and the valve body, reducing the gap between the diaphragm and the valve body, so that the fluid is difficult to flow out from the gap between the diaphragm and the valve body, and increasing the sealing performance of the diaphragm valve.
[0025] 2. The staff slides the card strip to insert it into the card slot, enabling the slot wall of the card slot to limit the card strip, thereby fixing the card strip and the valve cover to each other, locking the rotating cover, reducing the possibility of the rotating cover being accidentally touched and rotated by people, enabling the rotating cover to more stably fix the operating rod, and reducing the situation where the diaphragm does not seal the valve port due to vibration of the rotating cover or accidental rotation by people, thereby increasing the stability of the diaphragm valve. Brief Description of the Drawings
[0026] Figure 1 is a schematic structural diagram of Embodiment 1;
[0027] Figure 2 is a cross-sectional view highlighting the operating component in Embodiment 1;
[0028] Figure 3 is an exploded view highlighting the receiving groove in Embodiment 1;
[0029] Figure 4 is a schematic structural diagram of Embodiment 2;
[0030] Figure 5 is along Figure 4 the cross-sectional view taken along line A - A in
[0031] Figure 6 is Figure 5 the enlarged schematic view of part B in
[0032] Figure 7 is an exploded view highlighting the fixing ring in Embodiment 2.
[0033] Reference Numerals: 1, valve body; 11, valve port; 12, inflow pipe; 13, outflow pipe; 2, valve cover; 21, operation plate; 22, diaphragm; 23, limiting ring; 24, annular groove; 25, perforation; 26, card slot; 3, operating component; 31, operating rod; 32, operating block; 4, rotating cover; 41, receiving groove; 42, rotating block; 421, groove; 422, stop spring; 423, stop block; 424, inclined surface; 43, accommodating groove; 431, moving spring; 432, card strip; 433, fixing block; 44, fixing ring; 441, fixing hole. Detailed Embodiments
[0034] The following further elaborates on this application in conjunction with the attached Figure 1-7 drawings.
[0035] Embodiment 1
[0036] This embodiment discloses a highly sealed diaphragm valve. Refer to Figure 1 and Figure 2, A highly sealed diaphragm valve, including a valve body 1, on the surface of which a valve port 11 is provided. An inflow pipe 12 and an outflow pipe 13 are provided on the valve body 1, and both the inflow pipe 12 and the outflow pipe 13 are connected to the valve port 11. A valve cover 2 is bolted to the valve body 1, and the valve cover 2 is used to block the opening of the valve port 11.
[0037] Refer to Figure 2 , An operating assembly 3 is provided on the valve cover 2, an operating plate 21 is provided on the operating assembly 3, and a diaphragm 22 is fixedly connected to the surface of the operating plate 21 facing the valve port 11. Both the operating plate 21 and the diaphragm 22 are located between the valve cover 2 and the valve body 1, and the diaphragm 22 abuts against the end surface of the valve body 1 where the valve port 11 is provided. The operating assembly 3 is used to drive the operating plate 21 to move towards the valve body 1, so that the diaphragm 22 can block the opening of the valve port 11, realizing the blocking of the inflow pipe 12 and the outflow pipe 13.
[0038] Refer to Figure 2 , A limiting ring 23 is integrally formed on the surface of the diaphragm 22 away from the operating plate 21, and a ring groove 24 is provided on the surface of the valve body 1 where the valve port 11 is provided, and the ring groove 24 penetrates the outer surface of the valve body 1. When the diaphragm 22 abuts against the valve body 1, the limiting ring 23 abuts against the groove wall of the ring groove 24. When the valve port 11 is blocked by the diaphragm 22, the inflow pipe 12 and the outflow pipe 13 are not connected.
[0039] Refer to Figure 2 , The operating assembly 3 includes an operating rod 31 and an operating block 32, and the end face of the operating rod 31 is fixedly connected to the operating plate 21. A through hole 25 is provided on the surface of the valve cover 2, and the hole wall of the through hole 25 is for the threaded connection of the operating rod 31. The operating block 32 is sleeved on the operating rod 31, and the operating block 32 is threadedly connected to the outer surface of the operating rod 31.
[0040] Refer to Figure 2 And Figure 3 , A rotating cover 4 is provided on the operating block 32, and a receiving groove 41 for inserting the operating block 32 is provided on the rotating cover 4. The groove wall of the receiving groove 41 and the outer wall of the operating block 32 are threadedly matched with each other, that is, when the rotating cover 4 rotates, the rotating cover 4 can drive the operating block 32 to rotate. A plurality of rotating blocks 42 are integrally formed on the outer surface of the rotating cover 4, and the plurality of rotating blocks 42 are arranged in an array along the circumferential direction of the rotating cover 4.
[0041] The implementation principle of Embodiment 1 is: the limiting ring 23 in the diaphragm 22 is inserted into the ring groove 24 to block the valve port 11 with the diaphragm 22.
[0042] Embodiment 2
[0043] Refer to Figure 4 And Figure 5 , The difference between this embodiment and Embodiment 1 is that a receiving groove 43 is provided on the rotating cover 4.
[0044] Reference Figure 5 and Figure 6 On the bottom wall of the accommodation groove 43, a moving spring 431 is fixedly connected. On the end face of the moving spring 431 away from the accommodation groove 43, a clamping strip 432 is fixedly connected. The clamping strip 432 extends along the length direction of the operating rod 31. A plurality of clamping grooves 26 are formed on the surface of the valve cover 2. The plurality of clamping grooves 26 are arranged in a circumferential array along the valve cover 2. The clamping grooves 26 are for the clamping strip 432 to be inserted into.
[0045] Reference Figure 6 When the clamping strip 432 is inserted into the clamping groove 26, the rotating cover 4 cannot rotate. When the moving spring 431 is in a non-loaded state, the moving spring 431 drives the clamping strip 432 to be inserted into the clamping groove 26. When the moving spring 431 is in a compressed state, the clamping strip 432 is not in the clamping groove 26.
[0046] Reference Figure 6 and Figure 7 On the outer surface of the clamping strip 432, a fixing block 433 is integrally formed. A fixing ring 44 is rotatably connected to the rotating block 42. The fixing ring 44 extends along the circumference of the rotating block 42. On the end face of the fixing ring 44, a fixing hole 441 for the fixing block 433 to pass through is formed. The fixing hole 441 penetrates the fixing ring 44 along the length direction of the fixing rod. The fixing hole 441 is inclined along the circumference of the fixing ring 44. When the fixing block 433 is located on the side of the fixing ring 44 close to the valve cover 2, the fixing hole 441 is on the moving path of the fixing block 433.
[0047] Reference Figure 6 When the fixing block 433 moves from the side of the fixing ring 44 close to the valve body 1 to the side of the fixing ring 44 away from the valve body 1, due to the inclination of the fixing hole 441, the fixing block 433 drives the fixing ring 44 to rotate, and at this time the clamping strip 432 disengages from the clamping groove 26.
[0048] Reference Figure 6 and Figure 7 On the outer surface of the rotating block 42, a groove 421 is formed. On the bottom wall of the groove 421, a stop spring 422 is fixedly connected. On the end of the stop spring 422 away from the bottom wall of the groove 421, a stop block 423 is fixedly connected. The stop block 423 extends along the length direction of the groove 421. On the surface of the stop block 423 away from the valve cover 2, there is an inclined surface 424. The distance between the inclined surface 424 and the valve cover 2 gradually decreases in the direction away from the stop spring 422.
[0049] Reference Figure 6 and Figure 7, the groove 421 is located in the rotation path of the fixed ring 44. When the fixed block 433 moves towards the side away from the valve cover 2, the fixed ring 44 rotates, and the stop block 423 can be inserted into the fixing hole 441. When the stop block 423 is inserted into the fixing hole 441, the inclined surface 424 in the stop block 423 protrudes from the fixing hole 441. At this time, the stop block 423 limits the fixed block 433.
[0050] Referring to Figure 6 , when the fixed block 433 is located on the side of the fixed ring 44 away from the valve cover 2, the staff can press the stop block 423 to make the inclined surface 424 located in the fixing hole 441. The fixed block 433 is subjected to the acting force of the moving spring 431 and moves towards the valve cover 2, so that the fixed block 433 drives the stop block 423 to be inserted into the groove 421 along the inclined surface 424, and the fixed block 433 drives the fixed ring 44 to rotate through the hole wall of the fixing hole 441, realizing the insertion of the clamping strip 432 into the clamping groove 26.
[0051] The implementation principle of Embodiment 2 is as follows: The staff pulls the clamping strip 432 to move the fixed block 433 away from the valve cover 2. The fixed block 433 moves along the direction of the fixing hole 441 to rotate the fixed ring 44. At this time, the fixing hole 441 is communicated with the groove 421, so that the stop block 423 protrudes from the groove 421, realizing the fixing of the stop block 423 to the fixed ring 44, and the fixed block 433 is limited by the fixing hole 441 and cannot move towards the valve cover 2.
[0052] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The "first", "second", "third" and similar terms used in the specification and claims of this application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "one" do not denote a quantity limitation either, but mean that there is at least one. The terms such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms such as "up", "down", "left", "right" are only used to represent relative position relationships. When the absolute position of the object to be described changes, the relative position relationships may also change accordingly.
[0053] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application shall be included in the protection scope of this application.
Claims
1. A high-sealing diaphragm valve, comprising a valve body (1), a valve port (11) is formed on the valve body (1), a valve cover (2) is provided on the valve body (1), an operating assembly (3) is provided on the valve cover (2), an operating plate (21) is provided on the operating assembly (3), a diaphragm (22) is provided on the operating plate (21), and the operating assembly (3) drives the diaphragm (22) to block the valve port (11), characterized in that: A limiting ring (23) is provided on the diaphragm (22), and an annular groove (24) for inserting the limiting ring (23) is formed on the valve body (1). When the limiting ring (23) is located in the annular groove (24), the diaphragm (22) abuts against the valve body (1).
2. The high-sealing diaphragm valve according to claim 1, characterized in that: The operating assembly (3) includes an operating rod (31) and an operating block (32). The operating rod (31) is threadedly connected to the valve cover (2), and the operating block (32) is threadedly connected to the operating rod (31). The operating plate (21) is located on the moving path of the operating rod (31). When the operating block (32) rotates, the operating block (32) drives the operating rod (31) to approach the valve body (1).
3. The high-sealing diaphragm valve according to claim 2, wherein: A rotating cover (4) is fixedly connected to the operating block (32), and a plurality of rotating blocks (42) are provided on the rotating cover (4). The plurality of rotating blocks (42) are circumferentially distributed along the rotating cover (4).
4. The high-sealing diaphragm valve according to claim 3, characterized in that: A clamping strip (432) is slidably connected to the rotating cover (4), and a clamping groove (26) for inserting the clamping strip (432) is formed on the valve cover (2). When the clamping strip (432) is inserted into the clamping groove (26), the valve cover (2) and the rotating cover (4) are fixed to each other.
5. A highly-sealed diaphragm valve according to claim 4, characterized in that: A moving spring (431) is provided on the clamping strip (432), and the moving spring (431) drives the clamping strip (432) to be inserted into the clamping groove (26).
6. The high-sealing diaphragm valve according to claim 4, characterized in that: A fixing ring (44) is rotatably connected to the rotating block (42), a fixing block (433) is provided on the clamping strip (432), and a fixing hole (441) for the fixing block (433) to pass through is formed on the end surface of the fixing ring (44). When the fixing block (433) is located in the fixing hole (441), the clamping strip (432) disengages from the clamping groove (26).
7. The high-sealing diaphragm valve according to claim 6, wherein: A stop spring (422) is provided on the rotating cover (4), a stop block (423) is provided on the stop spring (422), and the stop spring (422) drives the stop block (423) to be inserted into the fixing hole (441). When the stop block (423) is located in the fixing hole (441), the clamping strip (432) disengages from the clamping groove (26).
8. The highly-sealed diaphragm valve according to claim 7, wherein: The surface of the stop block (423) away from the valve cover (2) has an inclined surface (424), and the distance between the inclined surface (424) and the valve cover (2) gradually decreases in the direction away from the stop spring (422). When the stop block (423) is inserted into the fixing hole (441), the inclined surface (424) is located outside the fixing hole (441).