Foot valve with good sealing effect

Abstract

The utility model provides a foot valve with a good sealing effect, which belongs to the technical field of foot valves and comprises a valve body, a valve core arranged in the valve body, a first sealing ring arranged in an upper mounting groove of the valve core, a second sealing ring arranged in a bottom mounting groove of the valve core and a third sealing ring arranged at the bottom of the valve body. According to the foot valve, fluid in the valve body can be prevented from leaking outwards, the connecting nozzles can be sealed and isolated, and the using effect of the foot valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to foot valve technical field, concretely relates to a foot valve with good sealing effect. BACKGROUND

[0002] Valve is the control component in fluid conveying system, can be used for controlling air, water, steam, various corrosive medium, mud, oil product, liquid metal and radioactive medium and so on various types fluid flow, has the functions such as stop, regulation, diversion, prevent backflow, pressure stabilization, shunt or overflow pressure relief, and the variety of valve is many, foot valve is also one kind of valve, it is commonly used as air valve, present part foot valve can be isolated by sealing washer inside valve body and outside, avoid the fluid in valve body to leak outward, but in stationary state, cannot guarantee the airtight isolation between the mouthpiece, fluid can be leaked in advance through the gap between valve body and valve core, when using foot valve, due to the leakage of fluid, it will affect the use effect of foot valve. SUMMARY

[0003] Therefore, the utility model provides a foot valve with good sealing effect, which can not only avoid fluid leakage in the valve body, but also realize the closed isolation between the mouthpieces, ensuring the use effect of the foot valve.

[0004] To solve the above technical problems, the utility model provides a foot valve with good sealing effect, which comprises a valve body, a valve core arranged in the valve body, a first sealing ring arranged in the upper part mounting groove of the valve core, a second sealing ring arranged in the bottom mounting groove of the valve core, and a third sealing ring arranged at the bottom of the valve body. The first sealing ring, the second sealing ring, and the third sealing ring are in contact with the inner groove surface of the valve body. During operation, the operator can press down the valve core, so that the originally closed upper mouthpiece is connected with the lower mouthpiece, thereby realizing the flow operation of the fluid. The first sealing ring can ensure the sealing between the upper part of the valve body and the valve core, avoiding fluid leakage through the gap between the valve body and the valve core. The third sealing ring can ensure the sealing between the second threaded groove at the bottom of the valve body and the threaded valve cover, avoiding fluid leakage through the gap between the second threaded groove and the valve cover in the working state. The second sealing ring can be in contact with the inside of the valve body in the stationary state of the foot valve, avoiding fluid leakage through the gap between the valve body and the valve core in the stationary state, and ensuring the sealing between the upper and lower mouthpieces.

[0005] The surface of the valve body is provided with a plurality of first threaded grooves, and each first threaded groove is threadedly connected with a mouthpiece, facilitating the installation and replacement of the mouthpiece.

[0006] The number of mouthpieces is four, and the second sealing ring is located between the upper mouthpiece and the lower mouthpiece. When the valve core is pressed down, the second sealing ring moves to the bottom of the lower mouthpiece, ensuring the flow between the upper and lower mouthpieces.

[0007] The upper end surface of the valve body is provided with a threaded surface, and a fixing nut is threadedly connected to the threaded surface, so that the valve body can be fixed by the fixing nut.

[0008] The bottom of the valve body is provided with a second threaded groove, and a valve cover is threadedly connected to the second threaded groove, so that the valve cover can be twisted out through the second threaded groove.

[0009] The third sealing ring is located on the upper side of the valve cover, and blocks and seals the gap between the valve cover and the valve body.

[0010] Compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0011] 1. When the utility model is used, not only can the fluid in the valve body be prevented from leaking outward, but also the connection nozzles can be closed and isolated, thereby ensuring the use effect of the foot valve.

[0012] 2. When the utility model is used, the number of connection nozzles is four, the second sealing ring is located between the upper connection nozzle and the lower connection nozzle, and when the valve core is pressed downward, the second sealing ring will move to the bottom of the lower connection nozzle, thereby ensuring the flow between the upper and lower connection nozzles.

[0013] 3. When the utility model is used, the upper end surface of the valve body is provided with a threaded surface, and a fixing nut is threadedly connected to the threaded surface, so that the valve body can be fixed by the fixing nut.

[0014] 4. When the utility model is used, the third sealing ring is located on the upper side of the valve cover, and blocks and seals the gap between the valve cover and the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a structural schematic view of the right side of the utility model;

[0017] Figure 3 is a detailed structural schematic view of the valve body of the utility model.

[0018] Explanation of reference signs: 100, valve body; 200, valve core; 301, first sealing ring; 302, second sealing ring; 303, third sealing ring; 401, first threaded groove; 402, connection nozzle; 501, threaded surface; 502, fixing nut; 601, second threaded groove; 602, valve cover. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model with the specific embodiments of the utility model.Figures 1-3 The technical solutions of the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0020] According to one embodiment of the present application, as shown in Figure 1 and Figure 2 : the present embodiment provides a foot valve with good sealing effect, which comprises a valve body 100, a valve core 200 is arranged in the inside of the valve body 100, a first sealing ring 301 is arranged in the upper part mounting groove of the valve core 200, a second sealing ring 302 is arranged in the bottom mounting groove of the valve core 200, a third sealing ring 303 is arranged at the bottom of the valve body 100, the first sealing ring 301, the second sealing ring 302 and the third sealing ring 303 are all in contact with the inner groove surface of the valve body 100, in the working process, the staff can press down the valve core 200, so that the originally closed upper side connector 402 is communicated with the lower side connector 402, so as to realize the circulation operation of fluid, the first sealing ring 301 can ensure the sealing between the upper part of the valve body 100 and the valve core 200, avoid the fluid leaking outward through the gap between the valve body 100 and the valve core 200, the third sealing ring 303 can ensure the sealing between the second threaded groove 601 at the bottom of the valve body 100 and the threaded mounting valve cover 602, avoid the fluid leaking outward through the gap between the second threaded groove 601 and the valve cover 602 in the working state, the second sealing ring 302 can be in contact with the inside of the valve body 100 in the static state of the foot valve, avoid the fluid flowing out through the gap between the valve body 100 and the valve core 200 in the static state in advance, ensure the sealing between the upper and lower side connectors 402.

[0021] According to another embodiment of the present application, as shown in Figure 1 , Figure 2 and Figure 3As shown, the surface of the valve body 100 is provided with a plurality of first threaded grooves 401, each of which is threadedly connected with a connector 402, facilitating installation and replacement of the connector 402, the number of the connectors 402 being four, the second sealing ring 302 being located between the upper connector 402 and the lower connector 402, and when the valve core 200 is pressed downward, the second sealing ring 302 will move to the bottom of the lower connector 402, ensuring the flow between the upper and lower connectors 402, the upper end surface of the valve body 100 being provided with a threaded surface 501, the threaded surface 501 being threadedly connected with a fixing nut 502, and the staff can fix the valve body 100 through the fixing nut 502, the bottom of the valve body 100 being provided with a second threaded groove 601, the second threaded groove 601 being threadedly connected with a valve cover 602, and the staff can rotate and twist the valve cover 602 out of the second threaded groove 601, the third sealing ring 303 being located on the upper side of the valve cover 602, and blocking and sealing the gap between the valve cover 602 and the valve body 100.

[0022] The utility model uses the method: in the working process, the staff can press down the valve core 200, make the originally closed upper connector 402 and lower connector 402 communicate, thereby realizing the flow operation of fluid, the first sealing ring 301 can guarantee the sealing property between the upper portion of valve body 100 and valve core 200, avoid that fluid leaks outward through the gap between valve body 100 and valve core 200, the third sealing ring 303 can guarantee the sealing property between the second threaded groove 601 of the bottom of valve body 100 and the threaded installation valve cover 602, avoid that fluid leaks outward through the gap between the second threaded groove 601 and valve cover 602 in the working state, the second sealing ring 302 can contact with the inside of valve body 100 in the static state of foot valve, avoid that fluid flows out in advance through the gap between valve body 100 and valve core 200 in the static state, guarantee the sealing property between the upper and lower connectors 402, the utility model not only can avoid that fluid leaks outward in valve body 100, but also can realize the closed isolation between the connectors 402, guarantee the use effect of foot valve.

[0023] The above is the preferred embodiment of the utility model, and it should be noted that, for those skilled in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the utility model.

Claims

1. A foot valve with good sealing effect, comprising a valve body (100), characterized in that: The inside of the valve body (100) is provided with a valve core (200), a first sealing ring (301) is arranged in the upper mounting groove of the valve core (200), a second sealing ring (302) is arranged in the bottom mounting groove of the valve core (200), the bottom of the valve body (100) is provided with a third sealing ring (303), and the first sealing ring (301), the second sealing ring (302) and the third sealing ring (303) are all in contact with the inner groove surface of the valve body (100).

2. The foot valve with good sealing effect according to claim 1, characterized in that: The surface of the valve body (100) is provided with a plurality of first threaded grooves (401), and each first threaded groove (401) is threadedly connected with a connecting nozzle (402).

3. The foot valve with a sealing effect according to claim 2, characterized in that: The number of the connecting nozzles (402) is four, and the second sealing ring (302) is located between the upper connecting nozzle (402) and the lower connecting nozzle (402).

4. The foot valve of claim 1, wherein: The upper end surface of the valve body (100) is provided with a threaded surface (501), and the threaded surface (501) is threadedly connected with a fixing nut (502).

5. The foot valve of claim 1, wherein: The bottom of the valve body (100) is provided with a second threaded groove (601), and the second threaded groove (601) is threadedly connected with a valve cover (602).

6. A foot valve with a good sealing effect according to claim 5, characterized in that: The third sealing ring (303) is located on the upper side of the valve cover (602).

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