Leakage-proof gas-liquid linkage valve

Abstract

The utility model discloses a leakage-proof water-gas linkage valve, and belongs to the technical field of water-gas linkage valves. A leakage-proof gas-water linkage valve comprises a water valve assembly, a gas valve assembly and a connecting sleeve. The air valve component and the water valve component are fixedly mounted at left and right ends of the connecting sleeve respectively; the air valve assembly comprises a valve body, a piston rod, a spring and a sealing assembly. The valve body is fixedly mounted at the left end of the connecting sleeve; a through spring groove and a piston hole are formed in the valve body, an air inlet pipe communicated with the piston hole is arranged at the upper end of the valve body, and an air outlet pipe communicated with the spring groove is arranged at the lower end of the valve body. The piston rod is movably installed in the piston hole, the spring is installed in the spring groove, the two ends of the spring abut against the inner wall of the spring groove and the piston rod respectively, and the end, away from the spring, of the movable rod penetrates through the connecting sleeve and extends into the water valve assembly. The sealing assembly is arranged on the valve body, the piston rod can be sealed through the sealing assembly, and the conditions of abrasion and air leakage are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water-gas linkage valves, and more specifically relates to a leakage-proof water-gas linkage valve. Background Art

[0002] The water-gas linkage valve is also called the water-gas linkage device, which includes a water control device and a gas control device. The function of the water-gas linkage device is to ensure that the gas control valve can only be opened when the water pressure is sufficient and introduced into the heat exchanger to flow; and when the water flow stops or the pressure is insufficient, the gas supply path is automatically cut off to prevent the equipment from being burned due to lack of water;

[0003] Generally, a water-gas linkage valve controls the opening and closing of the valve by a piston push rod. The piston rod needs to move back and forth frequently, so wear will occur at the connection with the valve body, resulting in air leakage, which affects the sealing of the valve. Therefore, a leak-proof water-gas linkage valve is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a leak-proof water-gas linkage valve, which can achieve sealing at the valve piston rod and avoid leakage caused by wear.

[0005] The utility model discloses a leak-proof water-gas linkage valve, comprising a water valve assembly, an air valve assembly and a connecting sleeve; the air valve assembly and the water valve assembly are respectively fixedly mounted at the left and right ends of the connecting sleeve; the air valve assembly comprises a valve body, a piston rod, a spring and a sealing assembly; the valve body is fixedly mounted at the left end of the connecting sleeve; a through spring groove and a piston hole are arranged in the valve body, an air inlet pipe communicating with the piston hole is arranged at the upper end of the valve body, and an air outlet pipe communicating with the spring groove is arranged at the lower end of the valve body; the piston rod is movably mounted in the piston hole, the spring is mounted in the spring groove, and the two ends of the spring are respectively abutted against the inner wall of the spring groove and the piston rod, one end of the movable rod away from the spring passes through the connecting sleeve and extends into the water valve assembly, the sealing assembly is arranged on the valve body, and the output end of the sealing assembly abuts against the piston rod for sealing.

[0006] As a further improvement of the utility model, the sealing assembly includes a fixed ring, a movable ring and a sealing ring; a sealing groove is provided at the right end of the valve body, the fixed ring is fixedly installed in the sealing groove, the movable ring is movably installed in the sealing groove, the two ends of the sealing ring are respectively connected to the inner end surface of the fixed ring and the inner end surface of the movable ring, a flange is provided at the left end of the connecting sleeve, the flange pushes the movable ring to compress the sealing ring, and the sealing ring abuts against the outer wall of the piston rod to form a seal.

[0007] As a further improvement of the utility model, a limiting ring is arranged on the outer end surface of the movable plate, a limiting groove matched with the limiting ring is arranged on the left end of the flange, and the limiting ring is inserted into the limiting groove.

[0008] As a further improvement of the utility model, the middle part of the sealing ring bulges inwards.

[0009] As a further improvement of the utility model, the inner wall of the spring groove and one end of the piston rod are both provided with limit slots, and the two ends of the spring are respectively installed in the limit slots.

[0010] As a further improvement of the utility model, a sealing ring is arranged on the outer wall of the piston rod, and the sealing ring abuts against the inner wall of the valve body to form a seal.

[0011] As a further improvement of the utility model, the water valve assembly includes a left valve body, a right valve body and a tympanic membrane; the left valve body and the right valve body are connected by bolts, the tympanic membrane is fixedly installed between the left valve body and the right valve body, the left valve body is fixedly connected to the connecting sleeve and communicates with the connecting sleeve, the piston rod passes through the left valve body and abuts against the tympanic membrane, and the right valve body is provided with a water inlet and a water outlet.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] 1. The utility model is provided with a sealing assembly on the valve body, through which the piston rod can be sealed to avoid wear and leakage.

[0014] 2. The utility model pushes the flange at the left end of the connecting sleeve into the sealing groove, thereby compressing the sealing ring, causing the sealing ring to deform and abut against the outer wall of the piston rod, thereby forming a seal. It will not be affected by the wear of the piston rod and can always maintain the sealing of the water-gas linkage valve. At the same time, a limit groove and a limit ring are provided, which can limit the movable plate when the flange pushes the movable plate, thereby avoiding the situation where the seal is not in place due to deviation when the compression sealing ring is deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the gas valve assembly of the utility model;

[0017] Figure 3 This is a structural schematic diagram of the sealing component of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the water valve assembly of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. Water valve assembly; 101. Left valve body; 102. Right valve body; 103. Tympanum; 104. Water inlet; 105. Water outlet; 2. Air valve assembly; 201. Valve body; 2011. Spring groove; 2012. Piston hole; 202. Piston rod; 203. Spring; 204. Sealing assembly; 2041. Fixed ring; 2042. Movable ring; 2043. Sealing ring; 2044. Limiting ring; 205. Inlet pipe; 206. Outlet pipe; 207. Sealing groove; 3. Connecting sleeve; 301. Flange; 3011. Limiting groove; 4. Limiting card slot; 5. Sealing ring. DETAILED DESCRIPTION

[0021] Specific embodiment 1: Please refer to Figure 1-4 A leak-proof water-gas linkage valve comprises a water valve assembly 1, an air valve assembly 2 and a connecting sleeve 3; the air valve assembly 2 and the water valve assembly 1 are respectively fixedly mounted on the left and right ends of the connecting sleeve 3;

[0022] The air valve assembly 2 includes a valve body 201, a piston rod 202, a spring 203 and a sealing assembly 204; the valve body 201 is fixedly mounted on the left end of the connecting sleeve 3 by screws; a spring groove 2011 and a piston hole 2012 are provided in the valve body 201, and an air inlet pipe 205 communicating with the piston hole 2012 is provided at the upper end of the valve body 201, and an air outlet pipe 206 communicating with the spring groove 2011 is provided at the lower end of the valve body 201; the piston rod 202 is movably mounted in the piston hole 2012, and the spring 203 is mounted in the spring groove 2011, and the two ends of the spring 203 are respectively against the inner wall of the spring groove 2011 and the piston rod 202, and at the same time, the inner wall of the spring groove 2011 and one end of the piston rod 202 are provided with a limiting card groove 4, and the two ends of the spring 203 are respectively mounted in the limiting card groove 4, and the setting of the limiting card groove 4 can limit the spring 203 to avoid the deviation of the spring 203 during use;

[0023] The end of the movable rod away from the spring 203 passes through the connecting sleeve 3 and extends into the water valve assembly 1. The sealing assembly 204 includes a fixed ring 2041, a movable ring 2042 and a sealing ring 2043. A sealing groove 207 is provided at the right end of the valve body 201. The fixed ring 2041 is fixedly installed in the sealing groove 207 by screws. The movable ring 2042 is movably installed in the sealing groove 207. The two ends of the sealing ring 2043 are respectively connected to the inner end surface of the fixed ring 2041 and the inner end surface of the movable ring 2042 by hot melting. A flange 301 is provided at the left end of the connecting sleeve 3. The flange 301 pushes the movable ring 2042 to compress the sealing ring 2043. The sealing ring 204 3 abuts against the outer wall of the piston rod 202 to form a seal; at the same time, the middle part of the sealing ring 2043 bulges inward, so that when the sealing ring 2043 is compressed, the inward bulging shape can achieve the purpose of inward compression and deformation, ensuring the sealing of the air valve. At the same time, a limit ring 2044 is provided on the outer end face of the movable ring 2042, and a limit groove 3011 adapted to the limit ring 2044 is provided at the left end of the flange 301, and the limit ring 2044 is inserted into the limit groove 3011; when the flange 301 pushes the movable ring 2042, the movable ring 2042 is limited to avoid the situation that the seal is not in place due to deviation when the compression sealing ring 2043 is deformed. At the same time, a sealing ring 5 is provided on the outer wall of the piston rod 202, and the sealing ring 5 abuts against the inner wall of the valve body 201 to form a seal, further ensuring the sealing of the piston rod 202 and the spring groove 2011.

[0024] The water valve assembly 1 includes a left valve body 101, a right valve body 102 and a tympanum 103; the left valve body 101 and the right valve body 102 are connected by bolts, the tympanum 103 is fixedly installed between the left valve body 101 and the right valve body 102, the left valve body 101 is fixedly connected to the connecting sleeve 3 and communicates with the connecting sleeve 3, the piston rod 202 passes through the left valve body 101 and abuts against the tympanum 103, and the right valve body 102 is provided with a water inlet 104 and a water outlet 105; through the water pressure of the water inlet 104, when the water pressure is greater than the elastic force of the spring 203, the piston rod 202 can be pushed to move to the left, thereby opening the air valve to achieve the purpose of circulation and achieving the purpose of opening and closing the valve.

[0025] Working principle: In the utility model, when assembling the water-gas linkage valve, the flange 301 on the connecting sleeve 3 is inserted into the sealing groove 207 to compress the sealing ring 2043. The sealing ring 2043 is compressed and deformed, so that the sealing ring 2043 can be against the outer wall of the piston rod 202, thereby achieving the purpose of sealing. Through the action of the deformation elastic force of the sealing ring 2043, it can avoid being affected by the reciprocating movement of the piston rod 202, and there will be no wear and leakage. The sealing performance of the water-gas linkage valve is better.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A leak-proof water-gas linkage valve, characterized in that: The invention comprises a water valve assembly (1), an air valve assembly (2) and a connecting sleeve (3); the air valve assembly (2) and the water valve assembly (1) are respectively fixedly mounted on the left and right ends of the connecting sleeve (3); the air valve assembly (2) comprises a valve body (201), a piston rod (202), a spring (203) and a sealing assembly (204); the valve body (201) is fixedly mounted on the left end of the connecting sleeve (3); a spring groove (2011) and a piston hole (2012) are provided in the valve body (201), and an air inlet pipe (205) which is in communication with the piston hole (2012) is provided at the upper end of the valve body (201); 01) is provided with an air outlet pipe (206) communicating with the spring groove (2011) at the lower end; the piston rod (202) is movably installed in the piston hole (2012), the spring (203) is installed in the spring groove (2011), and the two ends of the spring (203) are respectively against the inner wall of the spring groove (2011) and the piston rod (202), and the end of the movable rod away from the spring (203) passes through the connecting sleeve (3) and extends into the water valve assembly (1); the sealing assembly (204) is arranged on the valve body (201), and the output end of the sealing assembly (204) is against the piston rod (202) for sealing.

2. The anti-leakage water-gas linkage valve according to claim 1, characterized in that: The sealing assembly (204) comprises a fixed ring (2041), a movable ring (2042) and a sealing ring (2043); a sealing groove (207) is arranged at the right end of the valve body (201); the fixed ring (2041) is fixedly installed in the sealing groove (207); the movable ring (2042) is movably installed in the sealing groove (207); two ends of the sealing ring (2043) are respectively connected to the inner end surface of the fixed ring (2041) and the inner end surface of the movable ring (2042); a flange (301) is arranged at the left end of the connecting sleeve (3); the flange (301) pushes the movable ring (2042) to compress the sealing ring (2043); the sealing ring (2043) abuts against the outer wall of the piston rod (202) to form a seal.

3. The anti-leakage water-gas linkage valve according to claim 2, characterized in that: A limiting ring (2044) is arranged on the outer end surface of the movable ring (2042), a limiting groove (3011) matched with the limiting ring (2044) is arranged on the left end of the flange (301), and the limiting ring (2044) is inserted into the limiting groove (3011).

4. The anti-leakage water-gas linkage valve according to claim 2, characterized in that: The middle part of the sealing ring (2043) bulges inwards.

5. The anti-leakage water-gas linkage valve according to claim 1, characterized in that: The inner wall of the spring groove (2011) and one end of the piston rod (202) are both provided with a limit groove (4), and both ends of the spring (203) are respectively installed in the limit groove (4).

6. The anti-leakage water-gas linkage valve according to claim 5, characterized in that: A sealing ring (5) is provided on the outer wall of the piston rod (202), and the sealing ring (5) abuts against the inner wall of the valve body (201) to form a seal.

7. The anti-leakage water-gas linkage valve according to claim 1, characterized in that: The water valve assembly (1) comprises a left valve body (101), a right valve body (102) and a tympanum (103); the left valve body (101) and the right valve body (102) are connected by bolts, the tympanum (103) is fixedly installed between the left valve body (101) and the right valve body (102), the left valve body (101) is fixedly connected to the connecting sleeve (3) and communicates with the connecting sleeve (3), the piston rod (202) passes through the left valve body (101) and abuts against the tympanum (103), and the right valve body (102) is provided with a water inlet (104) and a water outlet (105).

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