Soft and hard dual-sealing high-temperature check valve

Abstract

The utility model discloses a soft and hard dual-seal high-temperature check valve, which relates to the technical field of check valves and comprises a valve body. The inner side of the valve seat is fixedly connected with the outer side of the valve body; the outer side of the valve clack is in sliding connection with the inner side of the valve seat; the outer side of the sealing assembly is fixedly connected with the outer side of the valve clack; the outer side of the backflow prevention assembly is fixedly connected with the inner side of the valve body; the outer side of the movable assembly is fixedly connected with the inner side of the valve body; the movable assembly comprises a shell. By arranging the buffering assembly, when the valve clack resets, buffering is provided between the valve clack and the valve seat, the impact force of the valve clack on the valve seat is reduced, the valve clack is protected, the service life of the valve clack is prolonged, by arranging the sealing assembly, soft and hard dual sealing is adopted between the valve clack and the valve seat, sealing is more reliable, sealing effectiveness is avoided, and the sealing effect is improved. The operation of the valve is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field, concretely relates to a soft and hard double sealing's high temperature check valve. BACKGROUND

[0002] High temperature check valve belongs to a kind of automatic valve, main function is to prevent medium backflow, prevent pump and driving motor reverse rotation, and the discharge of container medium, check valve can also be used to provide supply to the pipeline of auxiliary system in which the pressure can rise to exceed system pressure, check valve can be mainly divided into swing check valve and lift check valve.

[0003] In prior art, such as Chinese patent number: CN202302123U, a kind of high temperature check valve, it includes valve body, valve seat and valve clack, the valve body includes left valve body and right valve body, left valve body and right valve body are sealedly installed by connecting piece, the valve clack is spherical framework, there is a layer of rubber on the outer surface of framework in the outer circle of framework, valve clack is installed on right valve body by valve rod.

[0004] In prior art, when the temperature inside check valve is too high, the sealing of valve is easily deformed by high temperature, influence the sealing performance of valve, and in prior art, when valve clack is closed, valve clack will be subjected to greater impact force under the action of valve rod, leading to that valve clack is easily damaged, in order to solve above problems, we propose a kind of soft and hard double sealing's high temperature check valve. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the technical scheme adopted by the utility model to solve its technical problems is: a kind of soft and hard double sealing's high temperature check valve, including valve body;Valve seat, the inner side of the valve seat is fixedly connected with the outer side of valve body;Valve clack, the outer side of the valve clack is slidably connected with the inner side of valve seat;Sealing assembly, the outer side of the sealing assembly is fixedly connected with the outer side of valve clack, and the sealing assembly is used to seal valve;Anti-backflow assembly, the outer side of the anti-backflow assembly is fixedly connected with the inner side of valve body, and the anti-backflow assembly is used to reduce material backflow impact valve clack;

[0006] Movable assembly, the outer side of the movable assembly is fixedly connected with the inner side of valve body, and the movable assembly is used to drive valve clack to move;The movable assembly includes shell, the outer side of the shell is fixedly connected with the inner side of valve body, the inner side of the shell is fixedly connected with rebound spring, the end of the rebound spring away from shell is fixedly connected with sliding column, and the end of the sliding column close to rebound spring is fixedly connected with buffer assembly;The outer side of sliding column is slidably connected with the inner side of shell, and the side of the sliding column away from rebound spring is fixedly connected with the outer side of valve clack;

[0007] In use, by setting the buffer assembly, a buffer is provided between the valve disc and the valve seat when the valve disc resets, the impact force of the valve disc on the valve seat is reduced, the valve disc is protected, the service life of the valve disc is prolonged, by setting the sealing assembly, the valve disc and the valve seat are double sealed, the sealing is more reliable, the sealing effect is avoided, and the operation of the valve is affected.

[0008] Preferably, the buffer assembly comprises a rotating rod, the bottom of the rotating rod is fixedly connected with the side close to the rebound spring of the sliding column, the side away from the sliding column of the rotating rod is fixedly connected with a sliding plate, and the outer side of the rotating rod is fixedly connected with an elastic plate.

[0009] Preferably, the anti-backflow assembly comprises a conical shell, the outer side of the conical shell is fixedly connected with the inner side of the valve body, the outer side of the conical shell is fixedly connected with a guide plate, the side away from the conical shell of the guide plate is fixedly connected with the inner side of the valve body, and a discharge port is formed in the wall of the conical shell.

[0010] Preferably, the sealing assembly comprises a circular ring, the inner side of the circular ring is fixedly connected with the outer side of the valve disc, the inner side of the valve seat is fixedly connected with a compression spring, one end of the compression spring away from the valve seat is fixedly connected with a sealing strip, and the outer side of the sealing strip is slidably connected with the outer side of the circular ring.

[0011] Preferably, the edge of the circular ring is fixedly connected with a sealing ring, the outer side of the sealing ring is slidably connected with the inner side of the valve seat, and the part close to the sealing ring of the inner side of the valve seat is fixedly connected with a sealing ring.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. In use, by setting the buffer assembly, a buffer is provided between the valve disc and the valve seat when the valve disc resets, the impact force of the valve disc on the valve seat is reduced, the valve disc is protected, the service life of the valve disc is prolonged.

[0014] 2. In use, by setting the sealing assembly, the valve disc and the valve seat are double sealed, the sealing ring is damaged in a high-temperature environment, the sealing effect is affected, and the valve is more reliable. DRAWINGS

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the sectional view of the utility model;

[0017] Figure 3 is the structure schematic view of the utility model Figure 2 A portion;

[0018] Figure 4 is the structure sectional view of the utility model movable assembly;

[0019] Figure 5 is the structure sectional view of the utility model buffer assembly;

[0020] Figure 6 is the structure sectional view of the utility model anti-return assembly.

[0021] Figure: 1, valve body;2, valve seat;3, movable assembly;31, shell;32, rebound spring;33, sliding column;34, buffer assembly;341, rotating rod;342, elastic plate;343, sliding plate;4, valve flap;5, sealing assembly;51, ring;52, sealing strip;53, compression spring;54, sealing ring;55, sealing ring;6, anti-return assembly;61, conical shell;62, guide plate;63, discharge port. DETAILED DESCRIPTION

[0022] The utility model makes further detailed explanation in combination with the specific implementation and the drawing. The embodiment of the utility model is given for example and description, and is not exhaustive or limit the utility model to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The embodiment is selected and described to better illustrate the principle and practical application of the utility model, and make those skilled in the art understand the utility model to design various embodiments with various modifications suitable for specific use. EMBODIMENT

[0023] Please refer to Figures 1-6 The utility model provides a technical scheme: a soft and hard double sealing high temperature check valve, including valve body 1;Valve seat 2, the inner side of valve seat 2 is fixedly connected with the outer side of valve body 1;Valve flap 4, the outer side of valve flap 4 is slidably connected with the inner side of valve seat 2;Sealing assembly 5, the outer side of sealing assembly 5 is fixedly connected with the outer side of valve flap 4, and sealing assembly 5 is used to seal the valve;Anti-return assembly 6, the outer side of anti-return assembly 6 is fixedly connected with the inner side of valve body 1, and anti-return assembly 6 is used to reduce material backflow impact valve flap 4;

[0024] The outer side of the movable assembly 3 is fixedly connected with the inner side of the valve body 1, and the movable assembly 3 is used to drive the valve disc 4 to move; the movable assembly 3 comprises a shell 31, the outer side of the shell 31 is fixedly connected with the inner side of the valve body 1, the inner side of the shell 31 is fixedly connected with a rebound spring 32, one end of the rebound spring 32 away from the shell 31 is fixedly connected with a sliding column 33, and the other end of the sliding column 33 close to the rebound spring 32 is fixedly connected with a buffer assembly 34; the outer side of the sliding column 33 is slidably connected with the inner side of the shell 31, and the outer side of the sliding column 33 away from the rebound spring 32 is fixedly connected with the outer side of the valve disc 4;

[0025] In use, the material is sent into the valve seat 2, the material flows along the valve seat 2 to the valve disc 4, the material drives the valve disc 4 to move away from the valve seat 2, the valve disc 4 drives the sealing assembly 5 and the sliding column 33 to move away from the valve seat 2, the sliding column 33 drives the rebound spring 32 to compress, at the same time, the buffer assembly 34 in the movable assembly 3 is driven to move by the sliding column 33, at this time, the material flows from the gap between the valve disc 4 and the valve seat 2 to the inside of the valve body 1, the material flows along the valve body 1 to the anti-backflow assembly 6, and then flows along the anti-backflow assembly 6 to the outside; after the input of the material is stopped, the rebound spring 32 is reset under the influence of the elastic force of the rebound spring 32, the sliding column 33 drives the valve disc 4 to move towards the valve seat 2, the valve disc 4 drives the sealing assembly 5 to seal the connecting surface between the valve disc 4 and the valve seat 2, and the buffer assembly 34 reduces the impact force of the valve disc 4 on the valve seat 2;

[0026] In use, the buffer assembly 34 is arranged, so that a buffer is provided between the valve disc 4 and the valve seat 2 when the valve disc 4 is reset, the impact force of the valve disc 4 on the valve seat 2 is reduced, the valve disc 4 is protected, the service life of the valve disc 4 is prolonged, the sealing assembly 5 is arranged, the valve disc 4 and the valve seat 2 are sealed by using soft and hard double sealing, the sealing is more reliable, the sealing effect is avoided, and the operation of the valve is affected.

[0027] The buffer assembly 34 comprises rotating rods 341, the bottom of the rotating rods 341 is fixedly connected with the side of the sliding column 33 close to the rebound spring 32, the side of the rotating rods 341 away from the sliding column 33 is fixedly connected with sliding plates 343, the outer side of the rotating rods 341 is fixedly connected with elastic plates 342, the number of the rotating rods 341 is two, and the rotating rods 341 are circumferentially arranged at the bottom of the sliding column 33; after the input of the material is stopped, the sliding column 33 drives the rotating rods 341 to move towards the valve seat 2, the rotating rods 341 drive the sliding plates 343 and the elastic plates 342 to move, as the lower part of the shell 31 is conical, the distance between the two sliding plates 343 gradually decreases with the movement of the sliding plates 343, the sliding plates 343 drive the rotating rods 341 to rotate, the rotating rods 341 drive the elastic plates 342 to bend and deform, the elastic plates 342 are affected by the elastic force of the elastic plates 342, and the elastic plates 342 apply pressure to the rotating rods 341; the rotating rods 341 apply pressure to the sliding plates 343, and the frictional force between the sliding plates 343 and the shell 31 increases; the sliding plates 343 are subjected to the frictional force, the sliding column 33 is prevented from returning, the valve disc 4 is closer to the valve seat 2, the sliding plates 343 are subjected to greater frictional force, the impact of the valve disc 4 on the valve seat 2 is reduced when the valve disc 4 returns, the sliding column 33 is prevented from moving by the buffer assembly 34, a buffer is provided between the valve disc 4 and the valve seat 2, the impact force of the valve disc 4 on the valve seat 2 is reduced, the valve disc 4 is protected, and the service life of the valve disc 4 is prolonged.

[0028] The anti-backflow assembly 6 comprises a conical shell 61, the outer side of the conical shell 61 is fixedly connected with the inner side of the valve body 1, the outer side of the conical shell 61 is fixedly connected with a guide plate 62, the side of the guide plate 62 away from the conical shell 61 is fixedly connected with the inner side of the valve body 1, and a discharge port 63 is arranged in the wall of the conical shell 61; in use, the material moves along the valve body 1 to the guide plate 62, and then flows to the outside along the discharge port 63 on the conical shell 61; when the input of the material is stopped, the material flows back to the conical shell 61, impacts the conical shell 61, and then flows into the valve body 1 from the discharge port 63; as the cross section of the valve body 1 is larger and the cross section of the conical shell 61 is smaller, the flow rate of the material flowing into the valve body 1 is reduced, the flow rate of the material flowing back is reduced by the anti-backflow assembly 6, the impact of the material on the valve disc 4 is reduced, and the valve disc 4 and the valve seat 2 are protected.

[0029] The sealing assembly 5 includes a circular ring 51, the inner side of the circular ring 51 is fixedly connected to the outer side of the valve disc 4, and a compression spring 53 is fixedly connected to the inner side of the valve seat 2. The end of the compression spring 53 away from the valve seat 2 is fixedly connected to a sealing strip 52, and the outer side of the sealing strip 52 is slidingly connected to the outer side of the circular ring 51. When in use, the valve disc 4 drives the circular ring 51 to move toward the valve seat 2, and the circular ring 51 moves to the valve seat 2 and contacts the sealing strip 52. The circular ring 51 drives the sealing strip 52 to move, and the sealing strip 52 drives the compression spring 53 to compress. Under the action of its own elastic force, the compression spring 53 drives the sealing strip 52 to stick tightly to the circular ring 51, so as to maintain the sealing of the valve disc 4. Through the sealing strip 52, the connection between the valve disc 4 and the valve seat 2 is hard-sealed to prevent valve leakage.

[0030] A sealing ring 54 is fixedly connected to the edge of the circular ring 51, and the outer side of the sealing ring 54 is slidably connected to the inner side of the valve seat 2. A sealing ring 55 is fixedly connected to the inner side of the valve seat 2 near the sealing ring 54. When in use, the circular ring 51 drives the sealing ring 54 to move, and the sealing ring 54 moves to the valve seat 2 and contacts the sealing ring 55. Since there is a groove at the position of the sealing ring 55, the sealing ring 54 is inserted in the groove, and the sealing ring 54 can also be limited. The valve disc 4 is soft-sealed by the sealing ring 55. By setting the sealing component 5, a soft and hard double seal is adopted between the valve disc 4 and the valve seat 2 to avoid damage to the sealing ring 55 in a high temperature environment, which affects the sealing effect and makes the valve more reliable.

[0031] Working principle:

[0032] During use, the material is fed into the valve seat 2, and the material flows along the valve seat 2 to the valve disc 4. The material drives the valve disc 4 to move away from the valve seat 2, and the valve disc 4 drives the sealing component 5 and the sliding post 33 to move away from the valve seat 2. The sliding post 33 compresses the rebound spring 32. At the same time, the buffer component 34 in the movable component 3 is driven to move by the sliding post 33. At this time, the material flows from the gap between the valve disc 4 and the valve seat 2 to the inside of the valve body 1. The material flows along the valve body 1 to the backflow prevention component 6. The material flows along the guide plate 62 and flows to the outside from the discharge port 63 on the conical shell 61.

[0033] When the material input stops, the rebound spring 32 drives the sliding post 33 to return to its original position under the influence of its own elastic force. The sliding post 33 drives the rotating rod 341 to move in the direction close to the valve seat 2. The rotating rod 341 drives the sliding plate 343 and the elastic plate 342 to move. Since the lower part of the shell 31 is conical, the distance between the two sliding plates 343 gradually decreases as the sliding plate 343 moves. The sliding plate 343 drives the rotating rod 341 to rotate, and the rotating rod 341 drives the elastic plate 342 to bend and deform. The elastic plate 342 is affected by its own elastic force and exerts pressure on the rotating rod 341. The rotating rod 341 exerts pressure on the sliding plate 343. The friction between the sliding plate 343 and the shell 31 increases. The friction force exerted on the sliding plate 343 prevents the sliding post 33 from returning to its original position. The closer the valve disc 4 is to the valve seat 2, the greater the friction force exerted on the sliding plate 343. When the valve disc 4 is returned to the valve seat 2, the impact on the valve seat 2 is reduced.

[0034] At the same time, the sliding column 33 drives the valve disc 4 to move toward the valve seat 2, and the valve disc 4 drives the circular ring 51 to move toward the valve seat 2. The circular ring 51 moves to the valve seat 2 and contacts the sealing strip 52. The circular ring 51 drives the sealing strip 52 to move, and the sealing strip 52 drives the compression spring 53 to be compressed. Under the action of its own elastic force, the compression spring 53 drives the sealing strip 52 to stick tightly to the circular ring 51. The sealing ring 54 is driven by the circular ring 51 to move toward the sealing ring 55. The surfaces of the sealing ring 54 and the sealing ring 55 fit together to seal the valve disc 4.

[0035] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A high-temperature check valve with soft and hard double seals, characterized in that: include: Valve body (1); A valve seat (2), the inner side of the valve seat (2) being fixedly connected to the outer side of the valve body (1); a valve flap (4), the outer side of the valve flap (4) being slidably connected to the inner side of the valve seat (2); A sealing assembly (5), the outer side of the sealing assembly (5) being fixedly connected to the outer side of the valve disc (4), and the sealing assembly (5) being used to seal the valve; An anti-backflow component (6), the outer side of the anti-backflow component (6) being fixedly connected to the inner side of the valve body (1), and the anti-backflow component (6) being used to reduce the impact of material backflow on the valve disc (4); A movable component (3), the outer side of the movable component (3) being fixedly connected to the inner side of the valve body (1), and the movable component (3) being used to drive the valve flap (4) to move; The movable assembly (3) includes a housing (31), the outer side of the housing (31) is fixedly connected to the inner side of the valve body (1), the inner side of the housing (31) is fixedly connected to a rebound spring (32), the end of the rebound spring (32) away from the housing (31) is fixedly connected to a sliding column (33), and the end of the sliding column (33) close to the rebound spring (32) is fixedly connected to a buffer assembly (34).

2. A high-temperature check valve with soft and hard double seals according to claim 1, characterized in that: The outer side of the sliding column (33) is slidably connected to the inner side of the housing (31), and the side of the sliding column (33) away from the rebound spring (32) is fixedly connected to the outer side of the valve disc (4).

3. The high-temperature check valve with soft and hard double seals according to claim 1, characterized in that: The buffer assembly (34) comprises a rotating rod (341), the bottom of the rotating rod (341) is fixedly connected to the side of the sliding column (33) close to the rebound spring (32), the side of the rotating rod (341) away from the sliding column (33) is fixedly connected to the sliding plate (343), and the outer side of the rotating rod (341) is fixedly connected to the elastic plate (342).

4. The high-temperature check valve with soft and hard double seals according to claim 1, characterized in that: The backflow prevention assembly (6) comprises a conical shell (61), the outer side of the conical shell (61) is fixedly connected to the inner side of the valve body (1), a guide plate (62) is fixedly connected to the outer side of the conical shell (61), a side of the guide plate (62) away from the conical shell (61) is fixedly connected to the inner side of the valve body (1), and a discharge port (63) is provided in the wall of the conical shell (61).

5. The high-temperature check valve with soft and hard double seals according to claim 1, characterized in that: The sealing assembly (5) comprises a circular ring (51), the inner side of the circular ring (51) is fixedly connected to the outer side of the valve disc (4), the inner side of the valve seat (2) is fixedly connected to a compression spring (53), the end of the compression spring (53) away from the valve seat (2) is fixedly connected to a sealing strip (52), and the outer side of the sealing strip (52) is slidably connected to the outer side of the circular ring (51).

6. A high-temperature check valve with soft and hard double seals according to claim 5, characterized in that: A sealing ring (54) is fixedly connected to the edge of the circular ring (51), the outer side of the sealing ring (54) is slidably connected to the inner side of the valve seat (2), and a sealing ring (55) is fixedly connected to the inner side of the valve seat (2) near the sealing ring (54).

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