Pressure self-sealing swing check valve
By designing the medium inlet and gas transmission execution unit in the check valve, dynamic sampling during the medium circulation process is realized, which solves the problem of cumbersome sampling operation of the existing check valve and improves work efficiency.
Patent Information
- Application Number
- CN202421049129.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
Existing check valves cannot perform dynamic sampling during the flow of medium, and the sampling operation is cumbersome.
A pressure self-sealing swing check valve is designed. By setting a medium inlet and a gas transmission execution unit in the valve body, the gas is used to drive the movement of the gas transmission execution unit to realize the opening of the medium inlet and the dynamic sampling of the fluid medium.
It realizes convenient dynamic sampling during the medium circulation process, simplifies the sampling operation and improves work efficiency.
Smart Images
Figure CN222377306U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a pressure self-sealing swing check valve. Background Art
[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. The flow channel inside the check valve is used for the circulation of fluid medium. In order to determine the parameters of the fluid medium, the flow channel needs to be sampled regularly; however, the existing check valves cannot perform dynamic sampling during the flow of the medium. Sampling can only be performed after the check valve is closed and the relevant pipelines are disassembled, which is relatively cumbersome. Utility Model Content
[0003] The utility model aims to provide a pressure self-sealing swing check valve to solve the problems raised in the background technology.
[0004] The above technical objectives of the utility model are achieved through the following technical solutions:
[0005] A pressure self-sealing swing check valve comprises a valve body and a valve cover arranged on the upper end of the valve body, a flow channel is provided in the valve body, and a valve core is arranged in the valve body to block the flow channel; a mounting groove is provided at the lower end of the valve body, a medium inlet communicating with the flow channel is provided at the upper end of the mounting groove, and a gas-transmitting actuator unit is arranged in the mounting groove, and the gas-transmitting actuator unit can keep the medium inlet cut off under normal conditions, and the gas-transmitting actuator unit is driven to move by introducing gas into the gas-transmitting actuator unit, thereby opening the medium inlet for sampling.
[0006] Further configuration is: the gas transmission type execution unit includes an inner shell fixed in the installation groove, an inner fixed block is fixedly arranged inside the inner shell, the inner fixed block is located below the medium inlet, a first medium inlet is provided between the upper end of the inner fixed block and the medium inlet, and the first medium inlet is communicated with the medium inlet; a second medium inlet is provided between the side of the inner fixed block and the inner wall of the inner shell, and the second medium inlet is communicated with the first medium inlet; an inner slider is slidably arranged inside the inner shell, a compression spring is also arranged inside the inner shell, and the inner slider is pushed by the compression spring to maintain the upward movement trend, and a sealing block is fixedly arranged on the upper end of the inner slider, and the sealing block will be kept against the inner fixed block under the push of the compression spring to cut off the second medium inlet;
[0007] A third medium inlet is provided inside the sealing block, a fourth medium inlet communicating with the third medium inlet is provided inside the inner sliding block, and the lower end of the fourth medium inlet can extend to the outside of the valve body.
[0008] A further configuration is that: a displacement recess is provided on the inner wall of the inner shell, a displacement block is fixedly provided on the side of the inner sliding block, when the sealing block abuts against the inner fixed block, a first air supply passage is provided between the displacement recess and the displacement block, a second air supply passage is provided on the inner wall of the inner shell, a third air supply passage and an air supply pipe are provided in the valve body, the air supply pipe, the third air supply passage, the second air supply passage and the first air supply passage are connected in sequence, and the air supply pipe extends to the surface of the valve body.
[0009] A further configuration is as follows: an inner cavity is opened between the right half of the inner slider and the inner shell, a connecting block is arranged in the inner cavity, a positioning block is arranged at the upper end of the connecting block, and the connecting block, the positioning block and the inner shell are fixed by screws; a longitudinal rod is fixedly arranged at the upper end of the positioning block, the longitudinal rod extends into the inner slider, and the compression spring is located in the inner cavity and is sleeved on the outer circumference of the longitudinal rod.
[0010] The beneficial effects of the utility model are:
[0011] 1. In the utility model, a medium inlet is provided to sample the fluid medium in the flow channel. The gas-transmitting execution unit can keep the medium inlet cut off under normal conditions. When gas is introduced into the gas-transmitting execution unit, the gas-transmitting execution unit can be driven to move, thereby opening the medium inlet for sampling. In this way, dynamic sampling can be achieved, which is very convenient.
[0012] 2. In the present invention, the fluid medium is guided by setting the first medium inlet, the second medium inlet, the third medium inlet and the fourth medium inlet; the compression spring provides the inner slider with a driving force to move upward, so that the inner slider can cut off the second medium inlet under normal conditions.
[0013] 3. In the utility model, the displacement indentation setting can cooperate with the displacement block to form the first gas supply channel. The second gas supply channel, the third gas supply channel and the gas supply pipe are used to input gas. The input gas can be input into the first gas supply channel and then push the inner slider downward, so that the second medium inlet channel and the third medium inlet channel are connected, thereby realizing smooth sampling of the fluid medium.
[0014] 4. In the present invention, the longitudinal rod can limit the compression spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an embodiment;
[0016] Figure 2 for Figure 1Enlarged view of part A in the middle.
[0017] In the figure: 11, valve body; 12, valve cover; 13, flow channel; 14, valve core; 21, mounting groove; 22, inner shell; 23, inner fixing block; 30, medium inlet; 31, first medium inlet; 32, second medium inlet; 33, third medium inlet; 34, fourth medium inlet; 41, inner slider; 42, compression spring; 43, sealing block; 51, displacement recess; 52, displacement block; 61, first gas delivery channel; 62, second gas delivery channel; 63, third gas delivery channel; 64, gas delivery pipe; 71, inner cavity; 72, connecting block; 73, positioning block; 74, screw; 75, longitudinal rod. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] As attached Figure 1 and 2 As shown;
[0020] The present embodiment discloses a pressure self-sealing swing check valve, comprising a valve body 11 and a valve cover 12 covered on the upper end of the valve body 11, a flow channel 13 is opened in the valve body 11, and a valve core 14 is arranged in the valve body 11 to block the flow channel 13; the above belongs to the conventional structure of the check valve, and the valve core 14 can achieve self-sealing under pressure.
[0021] A mounting groove 21 is provided at the lower end of the valve body 11, and a medium inlet 30 communicating with the flow channel 13 is provided at the upper end of the mounting groove 21. A gas-transmitting actuator unit is arranged in the mounting groove 21. The gas-transmitting actuator unit can keep the medium inlet 30 cut off under normal conditions. The gas-transmitting actuator unit is driven to move by introducing gas, thereby opening the medium inlet 30 for sampling.
[0022] The gas transmission type execution unit includes an inner shell 22 fixed in the mounting groove 21, an inner fixed block 23 is fixedly arranged inside the inner shell 22, and the inner fixed block 23 is located below the medium inlet 30. A first medium inlet 31 is provided between the upper end of the inner fixed block 23 and the medium inlet 30, and the first medium inlet 31 is communicated with the medium inlet 30; a second medium inlet 32 is provided between the side of the inner fixed block 23 and the inner wall of the inner shell 22, and the second medium inlet 32 is communicated with the first medium inlet 31; an inner slider 41 is slidably arranged inside the inner shell 22, and a compression spring 42 is also arranged inside the inner shell 22, and the inner slider 41 is pushed by the compression spring 42 to maintain the upward movement trend, and a sealing block 43 is fixedly arranged on the upper end of the inner slider 41, and the sealing block 43 will be pushed by the compression spring 42 to keep against the inner fixed block 23 to cut off the second medium inlet 32;
[0023] A third medium inlet 33 is defined inside the sealing stop 43 , and a fourth medium inlet 34 communicating with the third medium inlet 33 is defined inside the inner slider 41 . The lower end of the fourth medium inlet 34 can extend to the outside of the valve body 11 .
[0024] Among them, a displacement recess 51 is opened on the inner wall of the inner shell 22, and a displacement block 52 is fixedly arranged on the side of the inner sliding block 41. When the sealing block 43 abuts against the inner fixed block 23, a first air supply channel 61 is provided between the displacement recess 51 and the displacement block 52, a second air supply channel 62 is opened on the inner wall of the inner shell 22, and a third air supply channel 63 and an air supply pipe 64 are opened in the valve body 11. The air supply pipe 64, the third air supply channel 63, the second air supply channel 62 and the first air supply channel 61 are connected in sequence, and the air supply pipe 64 extends to the surface of the valve body 11.
[0025] Among them, an inner cavity 71 is opened between the right half of the inner slider 41 and the inner shell 22, and a connecting block 72 is arranged in the inner cavity 71. A positioning block 73 is arranged at the upper end of the connecting block 72. The connecting block 72, the positioning block 73 and the inner shell 22 are fixed by screws 74; a longitudinal rod 75 is fixedly arranged at the upper end of the positioning block 73, and the longitudinal rod 75 extends into the inner slider 41. The compression spring 42 is located in the inner cavity 71 and is sleeved on the outer periphery of the longitudinal rod 75.
[0026] The working principle of this embodiment is:
[0027] ① Under normal conditions, the inner slider 41 will maintain an upward movement under the push of the compression spring 42, and then push the sealing block 43 to abut against the inner fixed block 23, so that the second medium inlet 32 and the third medium inlet 33 are separated and sampling cannot be performed.
[0028] ⑤ When sampling is required, gas is input through the gas pipe 64. The input gas can be input into the first gas channel 61 after passing through the third gas channel 63 and the second gas channel 62, and then the inner slider 41 will be pushed downward, so that the sealing block 43 is separated from the inner fixed block 23, and the second medium inlet 32 and the third medium inlet 33 are connected; at this time, the fluid medium entering from the medium inlet 30 will pass through the first medium inlet 31, the second medium inlet 32 and the third medium inlet 33 and then be output from the fourth medium inlet 34.
[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A pressure self-sealing swing check valve, comprising a valve body (11) and a valve cover (12) disposed on the upper end of the valve body (11), wherein a flow channel (13) is provided in the valve body (11), and a valve core (14) is disposed in the valve body (11) for blocking the flow channel (13); characterized in that: The lower end of the valve body (11) is provided with a mounting groove (21), and the upper end of the mounting groove (21) is provided with a medium inlet (30) communicating with the flow channel (13). An air-transmitting actuator unit is arranged in the mounting groove (21). The air-transmitting actuator unit can keep the medium inlet (30) cut off under normal conditions. The air-transmitting actuator unit is driven to move by introducing gas into the air-transmitting actuator unit, thereby opening the medium inlet (30) for sampling.
2. A pressure self-sealing swing check valve according to claim 1, characterized in that: The gas transmission type execution unit comprises an inner shell (22) fixed in the installation groove (21), an inner fixing block (23) is fixedly arranged inside the inner shell (22), the inner fixing block (23) is located below the medium inlet (30), a first medium inlet (31) is provided between the upper end of the inner fixing block (23) and the medium inlet (30), and the first medium inlet (31) is communicated with the medium inlet (30); a second medium inlet (32) is provided between the side of the inner fixing block (23) and the inner wall of the inner shell (22), and the second medium inlet (32) is communicated with the medium inlet (30). The second medium inlet (32) is connected to the first medium inlet (31); an inner slider (41) is slidably arranged inside the inner shell (22); a compression spring (42) is also arranged inside the inner shell (22); the inner slider (41) is pushed by the compression spring (42) to maintain an upward movement; a sealing block (43) is fixedly arranged at the upper end of the inner slider (41); the sealing block (43) is pushed by the compression spring (42) to keep contact with the inner fixed block (23) to cut off the second medium inlet (32); The sealing block (43) has a third medium inlet (33) formed inside, and the inner sliding block (41) has a fourth medium inlet (34) formed inside and communicating with the third medium inlet (33), and the lower end of the fourth medium inlet (34) can extend to the outside of the valve body (11).
3. A pressure self-sealing swing check valve according to claim 2, characterized in that: The inner wall of the inner shell (22) is provided with a displacement recess (51), and a displacement block (52) is fixedly arranged on the side of the inner sliding block (41). When the sealing block (43) abuts against the inner fixed block (23), a first air supply passage (61) is provided between the displacement recess (51) and the displacement block (52). The inner wall of the inner shell (22) is provided with a second air supply passage (62). The valve body (11) is provided with a third air supply passage (63) and an air supply pipe (64). The air supply pipe (64), the third air supply passage (63), the second air supply passage (62) and the first air supply passage (61) are connected in sequence, and the air supply pipe (64) extends to the surface of the valve body (11).
4. A pressure self-sealing swing check valve according to claim 3, characterized in that: An inner cavity (71) is provided between the right half of the inner slider (41) and the inner shell (22), a connecting block (72) is provided in the inner cavity (71), a positioning block (73) is provided at the upper end of the connecting block (72), and the connecting block (72), the positioning block (73) and the inner shell (22) are fixed by screws (74); a longitudinal rod (75) is fixedly provided at the upper end of the positioning block (73), and the longitudinal rod (75) extends into the inner slider (41), and the compression spring (42) is located in the inner cavity (71) and is sleeved on the outer circumference of the longitudinal rod (75).