Flow guide damping slow-closing check valve

Abstract

The utility model discloses a flow guide damping slow-closing check valve, relates to the technical field of slow-closing check valves, and aims at solving the technical problem that an existing flow guide damping slow-closing check valve is poor in sealing performance. A hydraulic damping structure is arranged on the side, facing the valve, of the bottom in the valve body, an elastic telescopic structure is hinged to the side, facing the valve, of the top in the valve body, the elastic telescopic structure is obliquely arranged, a mounting base is hinged to one end of the elastic telescopic structure, and the mounting base is arranged on the valve. The installation base is in a circular truncated cone shape, the interior of the installation base is hollowed out, the large head end of the installation base is connected with the valve, and the small head end of the installation base is connected with the elastic telescopic structure. The utility model has the advantage of leakage prevention.

Description

Technical Field

[0001] The utility model relates to the technical field of slow-closing check valves, and more specifically to a flow-guiding damping slow-closing check valve. Background Art

[0002] The flow-guiding damping slow-closing check valve is a slow-closing check valve, which is used to prevent the backflow of the medium in the pipeline. The opening and closing parts are opened or closed automatically by the flow and force of the medium to prevent the backflow of the medium. The check valve belongs to the automatic valve type and is mainly used in pipelines with unidirectional flow of the medium. It only allows the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline. The flow-guiding damping slow-closing check valve is usually equipped with a hydraulically controlled damping structure (hydraulic cylinder, etc.) to achieve the slow closing effect of the valve.

[0003] The existing flow-guiding damping slow-closing check valve achieves a sealing effect by pushing the valve with the reflux medium. When the reflux medium fluctuates in the valve body, the valve will open and close slightly, resulting in a loose seal and leakage. Therefore, its practical performance is not good enough. In view of this, we propose a flow-guiding damping slow-closing check valve. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a flow guiding damping slow closing check valve to solve the technical problem of poor sealing performance of the current flow guiding damping slow closing check valve.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a flow-guiding damping slow-closing check valve, comprising a valve body, a valve is rotatably arranged inside the valve body at one side of the water inlet, and a hydraulic damping structure is arranged at the bottom of the valve body on one side facing the valve;

[0006] An elastic telescopic structure is hingedly arranged at the top of the valve body toward one side of the valve, and the elastic telescopic structure is arranged obliquely, and a mounting seat is hingedly arranged at one end of the elastic telescopic structure, and the mounting seat is arranged on the valve;

[0007] The mounting seat is in a truncated cone shape, the interior of the mounting seat is hollow, the large end of the mounting seat is connected to the valve, and the small end of the mounting seat is connected to the elastic telescopic structure.

[0008] The utility model adopts the designed elastic telescopic structure and mounting seat. During the use of the device, when the water inlet pressure reaches a certain level, the valve will be opened to realize the conveying of the medium. At this time, the elastic telescopic structure is in a compressed state. When the water inlet pressure decreases, the elastic telescopic structure will reset, and then cooperate with the reflux medium in the valve body to drive the valve to reset, so that the valve seals the water inlet to prevent backflow. The elastic telescopic structure can cooperate with the mounting seat to stably press the valve against the water inlet to achieve a sealing effect. Even if the reflux medium fluctuates, it will not affect the valve, so that the valve can effectively seal the water inlet and is not prone to leakage. The mounting seat is truncated cone-shaped as a whole, and the interior is hollow, and the end of the elastic telescopic structure is connected to the small end of the mounting seat. Therefore, the driving force generated by the elastic telescopic structure can be diffused from the small end of the mounting seat to the large end of the mounting seat around, and then the valve is pushed around, ensuring that the valve can be stably pressed on the water inlet for sealing around the valve, further ensuring the sealing effect of the valve on the water inlet.

[0009] Preferably, a sealing ring is arranged on the side of the valve facing away from the mounting seat, and a sealing groove symmetrical to the sealing ring is arranged on the water inlet of the valve body.

[0010] Preferably, a limiting structure is arranged on a side of the top of the valve body facing away from the valve, and the limiting structure comprises a vertical rod, and a concave bracket is arranged at the bottom end of the vertical rod.

[0011] Preferably, the elastic telescopic structure comprises a sleeve, a spring is arranged inside the sleeve, and a rod is inserted into one end of the sleeve.

[0012] Preferably, one end of the spring is connected to an end of the sleeve interior facing away from the insertion rod, and the other end of the spring is connected to an end of the insertion rod inserted into the sleeve.

[0013] Preferably, a mounting shaft is arranged at the top of the valve, and the mounting shaft is rotatably arranged at the top of the valve body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts the designed elastic telescopic structure and mounting seat. During the use of the device, when the water inlet pressure reaches a certain level, the valve will be opened to realize the medium transportation. At this time, the elastic telescopic structure is in a compressed state. When the water inlet pressure decreases, the elastic telescopic structure will reset, and then cooperate with the reflux medium in the valve body to drive the valve to reset, so that the valve can seal the water inlet to prevent backflow. The elastic telescopic structure can cooperate with the mounting seat to stably close the valve on the water inlet to achieve a sealing effect. Even if the reflux medium fluctuates, it will not affect the valve, so that the valve can effectively seal the water inlet and is not prone to leakage. The technical problem of poor sealing performance of the current diversion damping slow-closing check valve is solved. Therefore, the utility model has the advantage of anti-leakage.

[0016] 2. The mounting seat of the utility model is truncated cone-shaped as a whole, and the interior is hollow, and the end of the elastic telescopic structure is connected to the small end of the mounting seat. Therefore, the driving force generated by the elastic telescopic structure can be diffused from the small end of the mounting seat to the large end of the mounting seat, and then push the valve around, ensuring that the valve can be stably pressed on the water inlet for sealing around the valve, further ensuring the sealing effect of the valve on the water inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first overall cross-sectional structure of the utility model;

[0018] Figure 2 It is a second overall cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the elastic telescopic structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the mounting seat structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the limiting structure of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Valve body; 101. Sealing groove; 2. Mounting shaft; 3. Valve; 301. Sealing ring; 4. Elastic telescopic structure; 401. Casing; 402. Insert rod; 403. Spring; 5. Mounting seat; 6. Limiting structure; 601. Vertical rod; 602. Concave bracket; 7. Hydraulic damping structure. DETAILED DESCRIPTION

[0024] like Figures 1 to 5As shown, the utility model relates to a flow-guiding damping slow-closing check valve, comprising a valve body 1, a valve 3 is rotatably arranged inside the valve body 1 on one side of the water inlet, a hydraulic damping structure 7 is arranged on the bottom of the valve body 1 on the side facing the valve 3, the valve body 1, the valve 3 and the hydraulic damping structure 7 constitute a flow-guiding damping slow-closing check valve, the hydraulic damping structure 7 is a prior art and will not be elaborated on herein, when the medium flows in through the water inlet, the valve 3 will be opened, at this time the medium is transported normally, if the medium refluxes, at this time the reflux medium will push the valve 3 to close to block and seal the water inlet, thereby achieving an anti-backflow effect; specifically, an installation shaft 2 is arranged on the top of the valve 3, and the installation shaft 2 is rotatably arranged on the top of the valve body 1, and the rotatable installation of the valve 3 is achieved with the cooperation of the installation shaft 2.

[0025] In the embodiment of the utility model, an elastic telescopic structure 4 is hingedly arranged at the top of the valve body 1 at one side of the valve 3, and the elastic telescopic structure 4 is arranged in an inclined manner. A mounting seat 5 is hingedly arranged at one end of the elastic telescopic structure 4, and the mounting seat 5 is arranged on the valve 3. During the use of the device, when the water inlet pressure reaches a certain level, the valve 3 will be opened to realize the transportation of the medium. At this time, the elastic telescopic structure 4 is in a compressed state. When the water inlet pressure decreases, the elastic telescopic structure 4 will reset, and then cooperate with the reflux medium in the valve body 1 to drive the valve 3 to reset, so that the valve 3 can seal the water inlet to prevent backflow. The elastic telescopic structure 4 cooperates with the mounting seat 5 to stably close the valve 3 on the water inlet to achieve a sealing effect. Even if the reflux medium fluctuates, it will not affect the valve 3, so that the valve 3 can effectively seal the water inlet and is not prone to leakage.

[0026] Specifically, a sealing ring 301 is arranged on the side of the valve 3 facing away from the mounting seat 5, and a sealing groove 101 symmetrical to the sealing ring 301 is arranged at the water inlet of the valve body 1. When the valve 3 is closed, the sealing ring 301 is embedded in the sealing groove 101 to ensure the sealing effect of the valve 3 on the water inlet.

[0027] Furthermore, a limiting structure 6 is arranged on the top side of the valve body 1 facing away from the valve 3. The limiting structure 6 includes a vertical rod 601. A concave bracket 602 is arranged at the bottom end of the vertical rod 601. The vertical rod 601 cooperates with the concave bracket 602 to limit the valve 3. When the valve 3 rotates to a certain extent, the concave bracket 602 presses on the valve 3.

[0028] Furthermore, the elastic telescopic structure 4 includes a sleeve 401, a spring 403 is arranged inside the sleeve 401, and a rod 402 is inserted into one end of the sleeve 401; one end of the spring 403 is connected to the end of the sleeve 401 that is opposite to the rod 402, and the other end of the spring 403 is connected to the end of the rod 402 inserted into the sleeve 401. Through the spring 403, the rod 402 can be extended and retracted inside the sleeve 401, so that when the valve 3 is rotated to open, the rod 402 will shrink into the sleeve 401, and when the water inlet pressure decreases, the spring 403 will push the rod 402 to reset, and then the rod 402 will push the valve 3 to reset.

[0029] In an embodiment of the utility model, the mounting seat 5 is in a truncated cone shape, the interior of the mounting seat 5 is hollow, the large end of the mounting seat 5 is connected to the valve 3, and the small end of the mounting seat 5 is connected to the elastic telescopic structure 4. The driving force generated by the elastic telescopic structure 4 can be diffused from the small end of the mounting seat 5 to the large end of the mounting seat 5 around, and then push the valve 3 around, ensuring that the valve 3 can be stably pressed on the water inlet for sealing around, further ensuring the sealing effect of the valve 3 on the water inlet.

[0030] Working principle: This embodiment provides a flow-guiding damping slow-closing check valve. When in use, first, when the medium flows in through the water inlet, the valve 3 will be opened, and the medium will be transported normally at this time. If the medium flows back, the backflow medium will push the valve 3 to close and block the water inlet, and with the cooperation of the hydraulic damping structure 7, the valve 3 will be slowly closed to achieve the effect of preventing backflow;

[0031] Secondly, during the use of the device, when the water inlet pressure reaches a certain level, the valve 3 will be opened to realize the medium transportation. At this time, the elastic telescopic structure 4 is in a compressed state. When the water inlet pressure decreases, the elastic telescopic structure 4 will reset, and then cooperate with the reflux medium in the valve body 1 to drive the valve 3 to reset, so that the valve 3 can seal the water inlet to prevent backflow. The elastic telescopic structure 4 cooperates with the mounting seat 5 to stably close the valve 3 on the water inlet to achieve a sealing effect. Even if the reflux medium fluctuates, it will not affect the valve 3, so that the valve 3 can effectively seal the water inlet and is not prone to leakage.

[0032] Finally, the driving force generated by the elastic telescopic structure 4 can be diffused from the small end of the mounting seat 5 to the large end of the mounting seat 5, and then push the valve 3 around, ensuring that the valve 3 can be stably pressed on the water inlet for sealing around, further ensuring the sealing effect of the valve 3 on the water inlet.

[0033] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A flow-guiding damping slow-closing check valve, characterized in that: It comprises a valve body (1), wherein a valve (3) is rotatably arranged inside the valve body (1) and located on one side of a water inlet, and a hydraulic damping structure (7) is arranged on the bottom of the valve body (1) on the side facing the valve (3); An elastic telescopic structure (4) is hingedly arranged at the top of the valve body (1) on one side facing the valve (3), and the elastic telescopic structure (4) is arranged in an inclined manner. A mounting seat (5) is hingedly arranged at one end of the elastic telescopic structure (4), and the mounting seat (5) is arranged on the valve (3); The mounting seat (5) is in the shape of a truncated cone, the interior of the mounting seat (5) is hollowed out, the large end of the mounting seat (5) is connected to the valve (3), and the small end of the mounting seat (5) is connected to the elastic telescopic structure (4).

2. A flow-guiding damping slow-closing check valve according to claim 1, characterized in that: The valve (3) is provided with a sealing ring (301) on the side facing away from the mounting seat (5), and the water inlet of the valve body (1) is provided with a sealing groove (101) symmetrical to the sealing ring (301).

3. A flow-guiding damping slow-closing check valve according to claim 1, characterized in that: A limiting structure (6) is arranged at the top of the valve body (1) on the side facing away from the valve (3), and the limiting structure (6) comprises a vertical rod (601), and a concave bracket (602) is arranged at the bottom end of the vertical rod (601).

4. A flow-guiding damping slow-closing check valve according to claim 1, characterized in that: The elastic telescopic structure (4) comprises a sleeve (401), a spring (403) is arranged inside the sleeve (401), and an insertion rod (402) is inserted into one end of the sleeve (401).

5. A flow-guiding damping slow-closing check valve according to claim 4, characterized in that: One end of the spring (403) is connected to an end of the sleeve (401) facing away from the insertion rod (402), and the other end of the spring (403) is connected to an end of the insertion rod (402) inserted into the sleeve (401).

6. A flow-guiding damping slow-closing check valve according to claim 1, characterized in that: A mounting shaft (2) is arranged at the top of the valve (3), and the mounting shaft (2) is rotatably arranged at the top of the valve body (1).

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