Lifting type check valve sealing structure

Abstract

The utility model discloses a lifting type return valve sealing structure, and relates to the field of lifting type return valves. The lifting type return valve sealing structure comprises a valve body, a valve cover, a sealing unit and a pushing unit, the valve cover is installed on the valve body through a bolt, the sealing unit is connected into the valve body in a sliding mode, and the pushing unit is located on the valve cover. According to the lifting type return valve sealing structure, when the water pressure in the valve body is too large, the water pressure pushes the conical valve element and the sealing gasket to move, when the sealing gasket is separated from a valve seat in the valve body, liquid in the valve body flows out through the conical valve element to be conveyed, and the larger the pressure is, the more the conical valve element is pushed to move, and the faster water drainage is; the sliding rod is driven to move, the pressure in the valve body can be observed according to the moving height of the sliding rod at the moment, and pressure abnormity in the valve body can be found and checked conveniently and rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of lift type return valves, in particular to a lift type return valve sealing structure. Background Art

[0002] A lift return valve is a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself. Its main function is to prevent the medium from flowing back, the pump and the drive motor from reversing, and the discharge of the container medium.

[0003] The lifting return valve sealing structure is the main structure to prevent the backflow of the medium. The valve body is sealed by contacting and squeezing the valve core and the valve seat. When the pressure in the valve body is too high, the valve core is pushed to move, so that the valve core and the valve seat are separated, and the liquid flows. However, in the existing technology, the pressure inside the valve body cannot be intuitively observed by sealing the sealing gasket, and the cleaning of the inside of the valve body cannot be judged. As a result, when the pressure is abnormal, it is necessary to check one by one, which is not conducive to the use of the lifting return valve. Therefore, we propose a lifting return valve sealing structure. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a lifting return valve sealing structure, which solves the problem that by completely sealing the sealing gasket, the pressure inside the valve body cannot be intuitively observed, and the cleaning inside the valve body cannot be judged, resulting in the need to check one by one when the pressure is abnormal, which is not conducive to the use of the lifting return valve.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lifting return valve sealing structure, comprising a sealing unit and a pushing unit, wherein the sealing unit is slidably connected to the interior of a valve body, a valve cover is mounted on the valve body by bolts, and the pushing unit is located on the valve cover;

[0006] The sealing unit includes a conical valve core and a sealing gasket, wherein the conical valve core is fixedly connected to the sealing gasket, and the sealing gasket is in contact with the inner wall of the valve body;

[0007] The pushing unit includes a sliding rod, and the sliding rod is fixedly connected to the conical valve core.

[0008] Preferably, a flow channel is provided inside the valve body, and the conical valve core is inserted into the flow channel.

[0009] Preferably, a shielding frame is slidably connected to the inner wall of the valve body, and the shielding frame is fixedly connected to the top end surface of the sealing gasket.

[0010] Preferably, a spring is fixedly connected to the inner wall of the conical valve core, and the spring is sleeved on the outer peripheral wall of the sliding rod.

[0011] Preferably, the top end surface of the spring is fixedly connected to a connecting seat.

[0012] Preferably, the sliding rod is slidably connected to the inner wall of the connecting seat.

[0013] Preferably, the connecting seat is installed inside the valve cover.

[0014] The utility model discloses a lifting return valve sealing structure, which has the following beneficial effects:

[0015] This lifting return valve sealing structure has a structure in which, when the water pressure in the valve body is too high, the water pressure pushes the conical valve core and the sealing gasket to move. When the sealing gasket separates from the valve seat in the valve body, the liquid in the valve body flows out through the conical valve core to transport the liquid. The greater the pressure, the more the conical valve core is pushed to move, and the faster the water is drained. When the conical valve core moves, it drives the slide rod to move. At this time, the height of the slide rod movement can be used to observe the pressure inside the valve body, which is convenient for quickly discovering and troubleshooting abnormal pressure in the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection between the sealing unit and the pushing unit of the utility model.

[0020] In the figure: 1. valve body; 101. flow channel; 2. valve cover; 3. sealing unit; 301. conical valve core; 302. sealing gasket; 303. shielding frame; 4. pushing unit; 401. connecting seat; 402. sliding rod; 403. spring. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] The embodiment of the present application provides a lifting return valve sealing structure, which solves the problem that the pressure inside the valve body 1 cannot be visually observed and the cleaning inside the valve body 1 cannot be determined by completely sealing the sealing gasket 302, resulting in the need to check one by one when the pressure is abnormal, which is not conducive to the use of the lifting return valve. When the water pressure in the valve body 1 is too high, the water pressure pushes the conical valve core 301 and the sealing gasket 302 to move. When the sealing gasket 302 is separated from the valve seat in the valve body 1, the liquid in the valve body 1 flows out through the conical valve core 301 to transport the liquid. The greater the pressure, the more the conical valve core 301 is pushed to move, and the faster the water is drained. When the conical valve core 301 moves, it drives the slide rod 402 to move. At this time, the height of the movement of the slide rod 402 can be used to observe the pressure inside the valve body 1, which is convenient for quickly finding and checking the pressure abnormality in the valve body 1.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] The embodiment of the utility model discloses a lifting type return valve sealing structure.

[0025] According to the attached Figure 1-3 As shown, it includes a sealing unit 3 and a pushing unit 4. The sealing unit 3 is slidably connected to the inside of the valve body 1. A valve cover 2 is installed on the valve body 1 by bolts, and the pushing unit 4 is located on the valve cover 2.

[0026] The sealing unit 3 includes a conical valve core 301 and a sealing gasket 302. The conical valve core 301 and the sealing gasket 302 are fixedly connected. The sealing gasket 302 is in contact with the inner wall of the valve body 1. When the water pressure in the valve body 1 is too high, the water pressure pushes the conical valve core 301 and the sealing gasket 302 to move. When the sealing gasket 302 separates from the valve seat in the valve body 1, the liquid in the valve body 1 flows out through the conical valve core 301 to transport the liquid. The greater the pressure, the more the conical valve core 301 moves, and the faster the water is drained.

[0027] The pushing unit 4 includes a slide rod 402, which is fixedly connected to the conical valve core 301. When the conical valve core 301 moves, it drives the slide rod 402 to move. At this time, the height of the movement of the slide rod 402 can be used to observe the pressure inside the valve body 1, which is convenient for quickly discovering and troubleshooting abnormal pressure in the valve body 1.

[0028] Since the conical valve core 301 is conical, when it is at the critical pressure point, the water pressure pushes the conical valve core 301 to separate from the valve seat. At this time, the liquid is transmitted along the gap between the inclined surface of the conical valve core 301 and the valve body 1, causing the liquid in the valve body 1 to flow gradually along the conical valve core 301, and its transmission rate slowly increases until it moves to the highest point and reaches the maximum flow rate.

[0029] A flow channel 101 is provided inside the valve body 1 , and the conical valve core 301 is inserted into the flow channel 101 , so that liquid enters the flow channel 101 for transportation.

[0030] A shielding frame 303 is slidably connected to the inner wall of the valve body 1. The shielding frame 303 is fixedly connected to the top end surface of the sealing gasket 302. When the sealing gasket 302 moves, the shielding frame 303 moves accordingly.

[0031] Under the action of the shielding frame 303 , the liquid discharge port in the valve body 1 is shielded, effectively preventing liquid from entering the conical valve core 301 .

[0032] A spring 403 is fixedly connected to the inner wall of the conical valve core 301 , and the spring 403 is sleeved on the outer wall of the sliding rod 402 .

[0033] The top end face of the spring 403 is fixedly connected to the connecting seat 401. When the conical valve core 301 moves, the slide rod 402 slides along the connecting seat 401. At this time, the conical valve core 301 squeezes the spring 403, so that the spring 403 is compressed between the conical valve core 301 and the connecting seat 401.

[0034] The slide rod 402 is slidably connected to the inner wall of the connecting seat 401, and the connecting seat 401 is installed inside the valve cover 2. When the slide rod 402 moves out from the connecting seat 401, the compression degree of the spring 403 can be judged by the height of the movement of the slide rod 402, and then the pressure inside the valve body 1 can be observed, which is convenient for quickly checking the abnormal pressure in the valve body 1.

[0035] When the pressure in the valve body 1 disappears, the spring 403 rebounds, pushing the slide rod 402 to slide the conical valve core 301 in the opposite direction until the sealing gasket 302 contacts the valve seat, thereby sealing the valve body 1.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. The lifting return valve sealing structure is characterized by: The valve body (1) comprises a sealing unit (3) and a pushing unit (4), wherein the sealing unit (3) is slidably connected to the inside of a valve body (1), a valve cover (2) is mounted on the valve body (1) via bolts, and the pushing unit (4) is located on the valve cover (2); The sealing unit (3) comprises a conical valve core (301) and a sealing gasket (302), wherein the conical valve core (301) and the sealing gasket (302) are fixedly connected, and the sealing gasket (302) is in contact with the inner wall of the valve body (1); The pushing unit (4) comprises a sliding rod (402), and the sliding rod (402) is fixedly connected to the conical valve core (301).

2. The lifting return valve sealing structure according to claim 1, characterized in that: A flow channel (101) is provided inside the valve body (1), and the conical valve core (301) is inserted into the flow channel (101).

3. The lifting return valve sealing structure according to claim 2, characterized in that: A shielding frame (303) is slidably connected to the inner wall of the valve body (1), and the shielding frame (303) is fixedly connected to the top end surface of the sealing gasket (302).

4. The lifting return valve sealing structure according to claim 3, characterized in that: A spring (403) is fixedly connected to the inner wall of the conical valve core (301), and the spring (403) is sleeved on the outer peripheral wall of the slide rod (402).

5. The lifting return valve sealing structure according to claim 4, characterized in that: The top end surface of the spring (403) is fixedly connected to a connecting seat (401).

6. The lifting return valve sealing structure according to claim 5, characterized in that: The sliding rod (402) is slidably connected to the inner wall of the connecting seat (401).

7. The lifting return valve sealing structure according to claim 6, characterized in that: The connecting seat (401) is installed inside the valve cover (2).

Images