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CN-224229340-U - Butterfly valve check integrated valve

CN224229340UCN 224229340 UCN224229340 UCN 224229340UCN-224229340-U

Abstract

The utility model discloses a butterfly valve check valve, which belongs to the technical field of butterfly valves and comprises a valve shell I, a valve shell II, a check valve, a valve rod, a resistance component and an adjusting component, wherein the resistance component is arranged at the outer end of the valve rod, the adjusting component is arranged at the outer end of a sleeve, the adjusting component is used for driving the resistance component to be adjusted, the resistance component downwards presses a rotating block, the rotating block is fixed at the outer end of the valve rod, a plurality of inclined grooves which are distributed at equal intervals are formed on an inclined plane on the rotating block, a friction disc is arranged in a wave shape, when the friction disc is tightly pressed in the inclined grooves on the rotating block through the pressurization of the adjusting component, the protruding edge of the inner side of the friction disc is clamped in the inclined grooves, and when a worker turns the valve rod again to close the butterfly valve, the friction disc has elasticity and is clamped with the inclined grooves, thereby forming paragraph type resistance, more time is needed when the butterfly valve is closed, and the water hammer effect is weakened.

Inventors

  • LI SUIDONG
  • ZHENG ZIQUAN
  • CHEN FENG
  • ZHENG SHAOLING

Assignees

  • 浙江科权流体设备有限公司

Dates

Publication Date
20260512
Application Date
20250630

Claims (7)

  1. 1. The utility model provides a butterfly valve check integrative valve, includes valve casing one (1), valve casing two (2) and check valve (5), its characterized in that still includes: The valve rod (10), the valve plate (9) is fixedly arranged at the bottom end of the valve rod (10), and the valve rod (10) is used for driving the valve plate (9) to rotate to open and close the butterfly valve; The resistance assembly (12), the resistance assembly (12) comprises a rotating block (123) and a friction disc (121), the rotating block (123) is fixedly arranged at the outer end of the valve rod (10), an inclined plane I (125) is arranged at the outer end of the rotating block (123), the friction disc (121) is matched with the inclined plane I (125), annular equidistant distributed inclined grooves (124) are formed in the outer surface of the inclined plane I (125), and the inclined grooves (124) are matched with the friction disc (121); An adjustment assembly (7), the adjustment assembly (7) being located above the resistance assembly (12), and the adjustment assembly (7) forcing the friction disc (121) against the rotating block (123) by a downward movement; wherein the friction disk (121) is propped against the inclined surface I (125) to improve the rotation resistance of the valve rod (10).
  2. 2. The integrated check valve for butterfly valve as set forth in claim 1, wherein the first valve housing (1) and the second valve housing (2) are fixedly connected, the third valve housing (3) is fixedly installed on the other side of the second valve housing (2), the check valve (5) is arranged on the inner side of the third valve housing (3), and the flange plate (4) is fixedly installed on one end, far away from each other, of the first valve housing (1) and the third valve housing (3).
  3. 3. The integrated check valve for butterfly valve according to claim 1, wherein a sealing bushing (14) is arranged between the first valve housing (1) and the second valve housing (2), the sealing bushing (14) is sleeved on the outer end of the valve plate (9) to form a seal, the top parts of the first valve housing (1) and the second valve housing (2) are provided with a sleeve (6), the sleeve (6) is internally provided with a mounting groove (13), and the adjusting component (7) and the resistance component (12) are both positioned on the inner side of the mounting groove (13).
  4. 4. The butterfly valve check integrated valve of claim 3, wherein the top of the valve rod (10) penetrates through the sleeve (6) to extend to the outside and is fixedly provided with a pull rod (8), and the outer end of the sleeve (6) is provided with annular equidistant movable grooves (11).
  5. 5. The butterfly valve check integrated valve of claim 4, wherein the resistance component (12) further comprises a pressure plate (122), the rotating block (123) and the friction disk (121) are coaxially arranged, the pressure plate (122) is positioned above the friction disk (121), the outer surface of the friction disk (121) is in a wavy arrangement, a connecting ring (127) is fixedly arranged at the top of the friction disk (121), an inclined plane II (126) matched with the friction disk (121) is formed in the inner side of the pressure plate (122), and the connecting ring (127) is fixedly arranged at the top end inside the pressure plate (122).
  6. 6. The butterfly valve check integrated valve of claim 5, wherein the adjusting component (7) comprises a rotary ring (71) and a sliding ring (74), threads matched with each other are formed on the inner side of the rotary ring (71) and the outer end of the sleeve (6), an annular groove (72) matched with the sliding ring (74) is formed on the inner side of the rotary ring (71), the sliding ring (74) is sleeved on the outer end of the sleeve (6), and the sliding ring (74) is in sliding connection with the annular groove (72).
  7. 7. The butterfly valve check integrated valve of claim 6, wherein the adjusting assembly (7) further comprises a pressing piece (73), connecting blocks (75) which are distributed at equal intervals are fixedly arranged at the outer ends of the pressing pieces (73), the connecting blocks (75) penetrate through the movable groove (11) and are fixedly connected with the inner side of the slip ring (74), and the pressing pieces (73) are connected with the top of the pressure plate (122).

Description

Butterfly valve check integrated valve Technical Field The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve check integrated valve. Background The butterfly valve check valve is a valve integrating functions of a butterfly valve and a check valve, and is mainly used in a pipeline system, and is not only used for cutting off and regulating flow, but also used for preventing medium backflow, the medium pressure pushes a check valve plate (or a butterfly plate) to open, fluid normally passes through, if the flow is required to be regulated, the opening of the butterfly valve can be controlled manually or through an actuator, and when the medium flows reversely, the check valve is automatically closed to prevent backflow. CN218440807U provides an integrated butterfly valve check valve, one end of the butterfly valve body is an inlet end, one end of the check valve body is an outlet end, and the integrated butterfly valve check valve is matched with the check valve body and the check valve spring seat, so that the integrated butterfly valve check valve is convenient to detach and clean, particularly, the detached end is arranged on the check valve spring seat, the sealing grade requirement of the sealing gasket of the valve plate is low, an extension shaft sleeve is arranged on one side of the check valve spring seat, and the problem that the sealing performance of the valve plate on the other side is reduced and water leakage is caused due to the inclination of the spring is avoided. When the butterfly valve is closed rapidly, fluid in the pipeline still keeps flowing at the original speed due to inertia, fluid at the upstream of the valve is accumulated, the pressure rises suddenly to form a water hammer effect, the water hammer effect can damage the valve and the pipeline, the butterfly valve in the scheme is not provided with corresponding slow closing measures, and when the butterfly valve is closed, a worker is easy to close at too high speed, so that the strength of the water hammer effect is improved. Therefore, a butterfly valve check integrated valve is proposed to address the above-described problems. Disclosure of utility model The utility model provides a butterfly valve check integrated valve, which can solve the problems in the related art that when a butterfly valve is closed quickly, pressure rises suddenly to form a water hammer effect, the butterfly valve is not provided with corresponding slow closing measures, and a worker is easy to close at too high speed when closing the butterfly valve, so that the strength of the water hammer effect is improved. In order to solve the problems, the utility model adopts the following technical scheme. The embodiment of the application provides a butterfly valve check integrated valve, which comprises a valve casing I, a valve casing II, a check valve, a valve rod, a resistance component and an adjusting component, wherein the valve rod is fixedly arranged at the bottom end of the valve rod and used for driving the valve plate to rotate so as to open and close the butterfly valve, the resistance component comprises a rotating block and a friction disc, the rotating block is fixedly arranged at the outer end of the valve rod, the outer end of the rotating block is provided with a bevel I, the friction disc is matched with the bevel I, the outer surface of the bevel I is provided with annular inclined grooves which are distributed at equal intervals, the inclined grooves are matched with the friction disc, the adjusting component is positioned above the resistance component, and the friction disc is forced to abut against the rotating block by downward movement, and the friction disc abuts against the bevel I so as to improve the rotation resistance of the valve rod. The technical scheme provided by the embodiment of the application at least has the following technical effects: The resistance component is installed at the outer end of the valve rod, the adjusting component is installed at the outer end of the sleeve, the adjusting component is used for driving and adjusting the resistance component, the resistance component downwards presses the rotating block, the rotating block is fixed at the outer end of the valve rod, a plurality of inclined grooves which are distributed at equal intervals are formed in the inclined plane on the rotating block, the friction disc is in wave-shaped arrangement, when the friction disc tightly abuts against the inclined grooves on the rotating block through the pressurization of the adjusting component, the protruding edge of the inner side of the friction disc is clamped in the inclined grooves, at the moment, when a worker rotates the valve rod to close the butterfly valve, the friction disc is elastic and is clamped with the inclined grooves, so that paragraph type resistance is formed, more time is needed when the butterfly valve is closed, and the water hammer effect