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CN-121993634-A - Butt-clamping check valve

CN121993634ACN 121993634 ACN121993634 ACN 121993634ACN-121993634-A

Abstract

The invention relates to the technical field of fluid control, and particularly discloses a butt-clamp type check valve which comprises a valve body, wherein a water flow channel is formed in the valve body, a first supporting shaft fixed with the inner wall of the valve body is arranged in the water flow channel through the center, the first supporting shaft is close to a water flow inlet, one side end surface of the valve body, which is close to the first supporting shaft, is symmetrically provided with two mounting grooves along the central axis of the valve body, sealing components are commonly arranged in the two mounting grooves, compared with the first supporting shaft, one side of the sealing components, which is closer to the water inlet, is provided with two valve plates which form sealing with the first supporting shaft, the sealing components comprise arc-shaped sealing plates which are commonly fixed with the two mounting grooves, and two arc-shaped sliding plates which are consistent with the curvature of the sealing plates are connected with the inner wall of the sealing plates in a sliding mode and are used for solving the problem that the opening and closing sensitivity of the water flow channel of the conventional butt-clamp type check valve cannot be adjusted.

Inventors

  • LI FUHU
  • XU PENG

Assignees

  • 江苏益马机械有限公司

Dates

Publication Date
20260508
Application Date
20260309

Claims (10)

  1. 1. The butt-clamping type check valve is characterized by comprising a valve body (1), wherein a water flow channel (101) is formed in the valve body (1), a first supporting shaft (102) fixed with the inner wall of the valve body (1) is arranged in the water flow channel (101) through the center, and the first supporting shaft (102) is close to a water flow inlet; Two mounting grooves (103) are symmetrically formed in the end face, close to the first supporting shaft (102), of the valve body (1), two sealing assemblies (2) are arranged in the two mounting grooves (103) together, and the sealing assemblies (2) are closer to one side of the water inlet than the first supporting shaft (102); Two valve plates (104) which form sealing with the first water flow channel (101) are arranged between the sealing component (2) and the first supporting shaft (102), The sealing assembly (2) comprises arc-shaped sealing plates (201) which are fixed together in the two mounting grooves (103), two arc-shaped sliding plates (202) with the same curvature as the sealing plates (201) are connected to the inner wall of the sealing plates (201) in a sliding manner, and the two sliding plates (202) are fixed with the end faces of the valve plates (104) respectively; Side plates (203) fixed with the valve body (1) are respectively fixed at the edges of two sides of the sealing plate (201), and the two side plates (203) are symmetrically arranged along the central axis of the valve body, a support shaft II (204) is fixedly connected between the two side plates (203), the support shaft II (204) is arranged in parallel with the support shaft I (102), two connecting blocks (2041) are fixed on the outer wall of the support shaft II (204), and the two connecting blocks (2041) are connected with an arc limiting structure (3) fixed with the valve plate (104); A support shaft III (105) parallel to the support shaft I (102) is arranged on one side of the support shaft I, which is far away from the water inlet, and two ends of the support shaft III (105) are fixedly connected with the inner wall of the valve body (1) as well; two springs (106) are sleeved on the outer side of the first supporting shaft (102), the two springs (106) respectively correspond to the two valve plates (104), one end of each spring (106) is hooked on the third supporting shaft (105) through a bending structure, and the other end of each spring is abutted to the bottom of each valve plate (104); the circle centers of the sealing plate (201), the sliding plate (202) and the limiting structure (3) are overlapped with the axle center of the first supporting shaft (102).
  2. 2. A butt-clip type check valve according to claim 1, wherein two sliding plates (202) are longitudinally arranged and sequentially distributed, the sliding plate (202) adjacent to the sealing plate (201) is slidably connected to the inner wall of the sealing plate (201), the other sliding plate (202) is slidably connected to the sealing plate (201) by a sealing strip, and the sealing strip is fixed to the end of the sealing plate (201) adjacent to the valve plate (104).
  3. 3. The butt-clamping check valve according to claim 1, wherein the limiting structure (3) comprises an arc-shaped plate (301), the curvature of the arc-shaped plate (301) is consistent with that of the sliding plate (202), an arc-shaped groove (3011) consistent with the curvature of the arc-shaped plate (301) is formed in the center of the arc-shaped plate (301) in a penetrating mode, the arc-shaped groove (3011) is matched with the outer diameter of the second supporting shaft (204), and the arc-shaped plate (301) is sleeved on the second supporting shaft (204) in a sliding mode through the arc-shaped groove (3011).
  4. 4. A butt-clip type check valve according to claim 3, wherein one end of the arc-shaped plate (301) is fixedly connected with the end face of the valve plate (104), a cylinder (302) is fixed in an arc-shaped groove (3011) at one end of the arc-shaped plate (301) away from the valve plate (104), and the output end of the cylinder (302) faces towards the second support shaft (204) and is fixedly connected with the connecting block (2041) through a second spring (303).
  5. 5. The butt-clamping check valve according to claim 1, wherein a fastening structure (4) is arranged between the valve plate (104) and the first support shaft (102), the fastening structure (4) comprises a rotating end (401) and a fixed end (402), the rotating end (401) is rotationally connected with the first support shaft (102), the fixed end (402) is fixedly connected with the valve plate (104), and the valve plate (104) rotates around the first support shaft (102) through the fastening structure (4).
  6. 6. The butt-clamping check valve according to claim 1, wherein a detection groove (107) is formed in one side, close to the spring (106), of the valve plate (104), a force sensor is arranged in the detection groove (107), and the force sensor is used for detecting impact force born by one side, close to the spring (106), of the valve plate (104).
  7. 7. The butt-clamping type check valve according to claim 1, wherein the sealing plate (201) and the side plate (203) are integrally formed, and the side plate (203) is fixedly connected with the water inlet end face of the valve body (1) through bolts.
  8. 8. A pinch check valve according to claim 1, wherein the first support shaft (102) and the second support shaft (204) are in the same horizontal plane and the spring (106) is in a compressed state.
  9. 9. A butt-clip type check valve according to claim 1, characterized in that two valve plates (104) are symmetrically arranged, and after splicing, can completely cover the cross section of the water flow channel (101), and the edge profile of the valve plates (104) is adapted to the inner wall of the water flow channel (101).
  10. 10. A pinch check valve according to claim 9, wherein the curvature of the mounting groove (103) is adapted to the arcuate configuration of the sealing assembly (2).

Description

Butt-clamping check valve Technical Field The invention relates to the technical field of fluid control, in particular to a butt clamp type check valve. Background In various fluid delivery systems, check valves serve as a key valve device that plays an irreplaceable role. The main function of the fluid backflow prevention device is to ensure that fluid can flow along one direction, when the fluid flows back, the check valve can be quickly and automatically closed, backflow is effectively prevented, a series of problems such as equipment damage, system faults and process flow disturbance caused by backflow are prevented, and the stable and safe operation of the whole fluid conveying system is ensured. The check valves commonly used in the market at present are various and are divided into a lifting check valve, a swing check valve, a butterfly check valve and the like according to structural forms. The lifting check valve usually realizes opening and closing actions by means of lifting of the valve clack, has relatively simple structure, higher fluid resistance and strict requirements on the installation direction, and is generally only installed horizontally, the swing check valve completes opening and closing processes by rotating the valve clack around a pin shaft outside a valve seat, has lower fluid resistance and relatively flexible installation direction, can be installed horizontally or vertically, but in the long-term use process, the sealing performance between the valve clack and the valve seat is easily influenced by water flow scouring and impurity deposition, so that the sealing effect is reduced, and the butterfly check valve controls the on-off of fluid by utilizing the rotation of a butterfly plate, has the advantages of compact structure, light weight and the like, has relatively limited sealing performance and pressure resistance, and is limited to some occasions with higher sealing and pressure resistance requirements. In addition, the existing check valve still has a plurality of defects in dynamic sealing performance. In the dynamic process of opening and closing the valve plate, due to the relative movement between the valve plate and the valve body, gaps are easily generated at contact positions, so that fluid leakage is caused, energy waste is caused, and the normal operation of a system is possibly influenced. Moreover, part of check valves lack an effective valve plate opening angle limiting device, when the check valves are impacted by larger water flow, the valve plates can collide with the valve body or other parts due to excessive rotation, so that the valve plates are damaged, the service lives of the valves are shortened, and the maintenance cost is increased. Meanwhile, the working state monitoring and adjusting means of the check valve are also deficient, the stress condition of the valve plate is difficult to master in real time, and the opening and closing sensitivity of the valve cannot be adjusted in time according to the actual working condition, so that the performance and reliability of the check valve are affected. Therefore, a butt-clip type check valve is proposed at present for solving the problem that the existing butt-clip type check valve cannot adjust the sensitivity of opening and closing of a water flow channel. Disclosure of Invention The present invention is directed to a butt-clip type check valve to solve the above-mentioned problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: the opposite clamping type check valve comprises a valve body, wherein a water flow channel is formed in the valve body, a first supporting shaft fixed with the inner wall of the valve body is arranged in the water flow channel through the center, and the first supporting shaft is close to a water flow inlet; Two mounting grooves are symmetrically formed in the end face of one side, close to the first support shaft, of the valve body along the central axis of the valve body, and sealing assemblies are arranged in the two mounting grooves together and are closer to one side of the water inlet than the first support shaft; two valve plates which form sealing with the first water flow channel are arranged between the sealing component and the first supporting shaft, The sealing assembly comprises arc-shaped sealing plates which are fixed together in the two mounting grooves, the inner walls of the sealing plates are connected with two arc-shaped sliding plates with the same curvature as the sealing plates in a sliding manner, and the two sliding plates are respectively fixed with the end faces of the valve plates; The two side plates are symmetrically arranged along the central axis of the valve body, a support shaft II is fixedly connected between the two side plates, and the support shaft II is arranged in parallel with the support shaft I; A third support shaft parallel to the first support shaft is arranged on one side, fa