Cast valve body of check valve

Abstract

The utility model discloses a check valve casting valve body which comprises a valve seat and valve ports arranged on two sides of the valve seat, a rotating unit and a sealing unit are arranged in the valve seat, the sealing unit comprises a sealing ring and a sliding rod, the rotating unit and the sealing unit are arranged, the rotating unit comprises a sealing cover, the sealing unit comprises a sealing ring, and the sliding rod is arranged on the sliding rod. When slight water pressure occurs, the water pressure in the valve port pushes the sealing cover to move, the sealing cover drives the sealing ring to move along with the sealing cover, the valve port is sealed under the action of the sealing ring, when the sliding rod moves to compress the spring, the moving distance of the sealing ring is limited under the bounce of the spring, and therefore the situation that when the water pressure fluctuates, the valve port is blocked is effectively avoided. Water flow enters the valve seat, at the moment, slight water pressure does not conduct water pressure circulation, and the situation that when water pressure fluctuates, the sealing cover rotates frequently, water conveying is conducted, the conveying water pressure on the other side fluctuates frequently, and the water flow conveying stability is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field, concretely is a check valve casting valve body. BACKGROUND

[0002] Check valve is the valve that the valve clapper is round and acts to block the medium backflow by its own weight and medium pressure.

[0003] The main function of check valve is to allow fluid to flow in one direction only, when the fluid backflow occurs, the valve clapper will automatically close, thereby cutting off the flow path, preventing damage caused by backflow, the check valve casting valve body usually seals the flow outlet by setting the one-way rotating valve clapper, when the water pressure appears at the outlet end, the valve clapper is pushed to rotate, and the water flow is flowed, when the water pressure on the other side is too large, the valve clapper is tightly extruded with the outlet end at this time, so that the water flow is avoided to be transported, but in the prior art, the rotation of the valve clapper relies on the water pressure difference, but when the water pressure fluctuates, the valve clapper is still pushed to rotate, which leads to frequent opening of the valve clapper, and thus the stability of water flow transmission cannot be effectively controlled, and the use effect is affected, so we provide a check valve casting valve body. SUMMARY

[0004] The utility model discloses a check valve casting valve body, to solve the problem in the above background art.

[0005] A check valve casting valve body, including valve seat and the valve port of setting at the both sides of valve seat, install rotating unit and sealing unit in the valve seat, the sealing unit includes:

[0006] Sealing ring is inserted in one of the valve ports, and the sealing ring is used to separate the valve port and the valve seat.

[0007] The sliding rod is fixedly connected to one end of the sealing ring and is used to limit the sliding of the sealing ring.

[0008] Preferably, the valve cover is installed on the valve seat and is used to overhaul the rotating unit in the valve seat.

[0009] Preferably, the rotating unit includes:

[0010] The sealing cover is attached to the sealing ring and is used to seal the valve port with the sealing ring.

[0011] The connecting rod is connected to the sealing cover through bolts and is used to drive the sealing cover to rotate.

[0012] Preferably, the end of the connecting rod is rotatably connected to the rotating seat, and the rotating seat is fixedly installed on the inner wall of the valve port.

[0013] Preferably, one end of the sealing ring inside the valve port is fixedly connected with a sliding seat, and the sliding seat is slidingly connected to the inner wall of the valve port.

[0014] Preferably, the end of the sliding seat is fixedly connected with a spring, and the other end of the spring is fixedly connected with the valve port.

[0015] Preferably, the spring is sleeved on the outer peripheral wall of the corresponding sliding rod, and the spring is equidistantly distributed in the valve port, and the equidistant arrangement is used for making the stress on the sealing ring more uniform.

[0016] By adopting the above technical scheme, when water pressure fluctuates, water flow enters the valve seat, slight water pressure does not circulate water pressure, when water pressure fluctuates, the sealing cover rotates frequently, water transmission is performed, the water pressure on the other side is transmitted frequently, and the stability of water flow transmission is affected.

[0017] Compared with the prior art, the utility model discloses a check valve casting valve body,

[0018] When slight water pressure appears, the water pressure in the valve port pushes the sealing cover to move, so that the sealing cover drives the sealing ring to move, the valve port is sealed under the action of the sealing ring, the sliding rod moves to compress the spring, the movement distance of the sealing ring is limited under the rebound of the spring, water flow enters the valve seat when water pressure fluctuates, slight water pressure does not circulate water pressure, the sealing cover rotates frequently when water pressure fluctuates, water transmission is performed, the water pressure on the other side is transmitted frequently, and the stability of water flow transmission is affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is overall structure schematic view of the utility model;

[0020] Figure 2 It is internal structure schematic view of the valve seat of the utility model;

[0021] Figure 3 It is structure schematic view of the utility model rotation unit;

[0022] Figure 4 It is structure schematic view of the utility model sealing unit.

[0023] In the drawing: 1, valve seat;2, valve port;3, valve cover;4, rotation unit;401, sealing cover;402, connecting rod;403, rotation seat;5, sealing unit;501, sealing ring;502, sliding rod;503, sliding seat;504, spring. DETAILED DESCRIPTION

[0024] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of the utility model protection.

[0025] Please refer to Figures 1-4 ,

[0026] Embodiment one:

[0027] The utility model provides a technical scheme: a check valve cast valve body, including valve seat 1 and the valve port 2 of setting in the both sides of valve seat 1, install rotating unit 4 and sealing unit 5 in valve seat 1, sealing unit 5 includes:

[0028] Sealing ring 501 is inserted in one of valve port 2, and sealing ring 501 is used to cut off valve port 2 and valve seat 1;

[0029] Sliding rod 502, one end is fixedly connected with sealing ring 501, and is used to limit the sliding of sealing ring 501.

[0030] Valve cover 3 is installed on valve seat 1, is used to overhaul rotating unit 4 in valve seat 1, by disassembling the bolt between valve cover 3 and valve seat 1, valve cover 3 is disassembled, rotating unit 4 in valve seat 1 can be observed, and it is convenient to overhaul rotating unit 4, when the long time use process, water pressure impacts rotating unit 4, and the tightness of rotating unit 4 can be guaranteed by replacing rotating unit 4.

[0031] Rotating unit 4 includes:

[0032] Sealing cover 401 is attached with sealing ring 501, is used to cooperate sealing ring 501 to seal valve port 2, when there is slight water pressure, the water pressure in valve port 2 pushes sealing cover 401 to move at this time, sealing cover 401 drives sealing ring 501 to move at this time, under the action of sealing ring 501, valve port 2 is sealed, at this time, slight water pressure does not carry out water pressure flow, avoid when water pressure fluctuation, sealing cover 401 rotates more frequently, carries out the transmission of water, causes the transmission water pressure to appear frequent fluctuation on the other side, influences the stability of water flow transmission;

[0033] Connecting rod 402 is connected with sealing cover 401 by bolt, is used to drive sealing cover 401 to rotate.

[0034] When sliding rod 502 is pushed and removed from valve port 2, at this time, water flow transmission can be carried out.

[0035] The end of the connecting rod 402 is rotationally connected with a rotating seat 403, and the rotating seat 403 is fixedly installed on the inner wall of the valve port 2.

[0036] Embodiment two:

[0037] The end of the sealing ring 501 inside the valve port 2 is fixedly connected with a sliding seat 503, and the sliding seat 503 is slidingly connected on the inner wall of the valve port 2. When water pressure fluctuation occurs in the valve port 2, at this time the water pressure pushes the sealing cover 401 to move, and the sealing ring 501 is moved, at this time the sealing ring 501 drives the sliding rod 502 to slide.

[0038] The end of the sliding seat 503 is fixedly connected with a spring 504, and the other end of the spring 504 is fixedly connected with the valve port 2. When the sliding rod 502 moves to compress the spring 504, under the rebound of the spring 504, the movement distance of the sealing ring 501 is limited, thereby effectively avoiding water flow into the valve seat 1 when water pressure fluctuation occurs.

[0039] When the water pressure is large, normal water flow transmission is carried out, at this time the water pressure pushes the sealing cover 401 to move, at this time the sealing cover 401 drives the sealing ring 501 to move, until the sealing ring 501 is separated from the valve port 2, that is, the water flow can be transmitted;

[0040] So that the water flow is transmitted through two valve ports 2, when the transmission is completed, the pressure difference disappears, under the rebound of the spring 504, the sealing ring 501 is recombined with the corresponding valve port 2, the sealing of the valve port 2 is completed, and backflow of the water flow is avoided.

[0041] The spring 504 is sleeved on the outer peripheral wall of the corresponding sliding rod 502, and the spring 504 is equidistantly distributed in the valve port 2, and the equidistant arrangement is used to make the stress on the sealing ring 501 more uniform.

[0042] Working principle: when the water pressure in the valve port 2 combined with the rotating unit 4 occurs, when the water pressure in the valve port 2 is slight, at this time the water pressure in the valve port 2 pushes the sealing cover 401 to move, at this time the sealing cover 401 drives the sealing ring 501 to move;

[0043] At this time the sealing ring 501 drives the sliding rod 502 to slide, when the sliding rod 502 moves to compress the spring 504, under the rebound of the spring 504, the movement distance of the sealing ring 501 is limited, thereby effectively avoiding water flow into the valve seat 1 when water pressure fluctuation occurs;

[0044] Under the action of the sealing ring 501, the valve port 2 is sealed, at this time the slight water pressure does not circulate, avoiding that the sealing cover 401 rotates frequently when water pressure fluctuation occurs, and the water is transmitted, which causes the water pressure on the other side to fluctuate frequently, affecting the stability of the water flow transmission;

[0045] When the water pressure is large, normal water flow transmission is carried out, at this time the water pressure pushes the sealing cover 401 to move, at this time the sealing cover 401 drives the sealing ring 501 to move, until the sealing ring 501 is separated from the valve port 2, that is, the water flow can be transmitted;

[0046] The water flow is transmitted through two valve ports 2, when the transmission is completed, the pressure difference disappears, under the rebound of the spring 504, the sealing ring 501 is recombined with the corresponding valve port 2, the sealing of the valve port 2 is completed, and the reverse flow of the water flow is avoided.

[0047] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cast check valve body, comprising a valve seat (1) and valve ports (2) disposed on both sides of the valve seat (1), wherein a rotating unit (4) and a sealing unit (5) are installed in the valve seat (1), characterized in that: The sealing unit (5) includes: A sealing ring (501) is inserted into one of the valve ports (2), the sealing ring (501) being used to separate the valve port (2) from the valve seat (1); The sliding rod (502) is fixedly connected at one end to the sealing ring (501) and is used to limit the sliding of the sealing ring (501).

2. The cast valve body of the check valve as described in claim 1, characterized in that: A valve cover (3) is installed on the valve seat (1) for maintenance of the rotating unit (4) in the valve seat (1).

3. The cast valve body of the check valve as described in claim 2, characterized in that: The rotating unit (4) includes: The sealing cap (401) fits into the sealing ring (501) and is used to seal the valve port (2) in conjunction with the sealing ring (501); The connecting rod (402) is connected to the sealing cover (401) by bolts and is used to drive the sealing cover (401) to rotate.

4. The cast valve body of the check valve as described in claim 3, characterized in that: The end of the connecting rod (402) is rotatably connected to a rotating seat (403), and the rotating seat (403) is fixedly installed on the inner wall of the valve port (2).

5. The cast valve body of the check valve as described in claim 1, characterized in that: The sealing ring (501) is fixedly connected to a sliding seat (503) at one end inside the valve port (2), and the sliding seat (503) is slidably connected to the inner wall of the valve port (2).

6. The cast valve body of the check valve as described in claim 5, characterized in that: A spring (504) is fixedly connected to one end of the sliding seat (503), and the other end of the spring (504) is fixedly connected to the valve port (2).

7. The cast valve body of the check valve as described in claim 6, characterized in that: The spring (504) is sleeved on the outer peripheral wall of the corresponding sliding rod (502). The springs (504) are evenly distributed in the valve port (2). The evenly distributed arrangement is intended to ensure that the sealing ring (501) is subjected to more uniform force.

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