Leakage-proof water drain valve

Abstract

The utility model discloses a leakage-proof water drain valve, which comprises a valve body, the valve body is used for being installed at the bottom of a water tank, the valve body is of a hollow structure, the side wall of the valve body is provided with at least one inlet communicated with the interior of the valve body, and the bottom of the valve body is provided with at least one outlet communicated with the interior of the valve body; the valve element is movably arranged in the valve body in the longitudinal direction and matched with the outlet in a plugging mode, a sealing gasket is arranged between the valve element and the valve body in the longitudinal direction, and the valve element is made of metal materials. The leakage-proof water drain valve can be rapidly closed, and the utilization rate of water resources is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a leak-proof drain valve. Background Art

[0002] The drain valve is mainly installed at the bottom of the water tank. The water tank is drained by lifting the valve core to separate the valve core from the drain port. It is mainly used in domestic water, water treatment systems, water supply systems, HVAC systems and other fields.

[0003] At present, the drain valve core mainly adopts light valve cores such as rubber. Due to the light weight of the valve core, there are the following problems: 1. Due to the light weight of the valve core, the drain valve will not be completely closed until the water level in the water tank reaches a certain level after draining water, resulting in the loss of tap water; 2. After a period of use, the drain valve will often leak due to scale accumulation on the sealing surface. With the global shortage of water resources and the requirements of national environmental protection policies, it is necessary to develop a leak-proof drain valve to improve the utilization rate of water resources. Utility Model Content

[0004] In view of the above problems existing in the existing drain valves, the present invention aims to provide a leak-proof drain valve which can be closed quickly to improve the utilization rate of water resources.

[0005] The specific technical solutions are as follows:

[0006] A leak-proof drain valve, comprising:

[0007] A valve body, the valve body is used to be installed at the bottom of the water tank, the valve body is a hollow structure, the side wall of the valve body has at least one inlet connected to the interior of the valve body, and the bottom of the valve body has at least one outlet connected to the interior of the valve body;

[0008] A valve core is movably arranged in the valve body along the longitudinal direction and cooperates with the outlet plug. A sealing gasket is arranged between the valve core and the valve body along the longitudinal direction. The valve core is made of metal.

[0009] In the above-mentioned leak-proof drain valve, the sealing gasket is installed on the valve core and / or the valve body.

[0010] The above-mentioned leak-proof drain valve, wherein the valve body includes a main body and a valve seat that are connected to each other, the inlet is arranged on the side wall of the main body, the outlet is arranged at the bottom of the valve seat, the valve core is sealed and cooperated with the valve seat, and the sealing gasket is installed on the valve core and / or the valve seat.

[0011] The above-mentioned anti-leakage drain valve, wherein the valve body further includes: a compression sleeve, the valve seat passes through the water tank, the compression sleeve is installed on the valve seat, and the bottom of the water tank is limited to be located between the valve seat and the compression sleeve.

[0012] The above-mentioned leak-proof drain valve, wherein the bottom of the water tank has a bottom surface, the water tank is located on the bottom surface and has a groove, the body is arranged in the groove, the valve seat passes through the bottom of the groove, the lowest point of the inlet is not higher than the lowest point of the bottom surface, and the water tank is located at the bottom of the groove and is limited to be between the valve seat and the pressure sleeve.

[0013] The above-mentioned anti-leakage drain valve, wherein the valve core includes a pressing portion and a guiding portion connected to each other, the pressing portion and the valve seat are limitedly matched, the sealing gasket is installed on the pressing portion and / or the valve seat, and the guiding portion extends into the outlet.

[0014] The above-mentioned anti-leakage drain valve, wherein the interior of the guide part is hollow, and the side wall of the guide part has at least one through hole connected to the interior thereof.

[0015] In the above-mentioned anti-leakage drain valve, the pressing part is movably arranged in the main body, the outer periphery of the pressing part is slidably matched with the inner periphery of the main body, the top of the main body has a step, and the top of the pressing part is limitedly matched with the step.

[0016] In the above-mentioned anti-leakage drain valve, a lifting piece is provided on the top of the valve core, and the lifting piece passes through the top of the valve body.

[0017] The above-mentioned leak-proof drain valve, wherein a sealing ring is provided between the valve seat and the box body.

[0018] Compared with the prior art, the above technical solution has the following positive effects:

[0019] The valve core of the utility model adopts metal material instead of existing light materials such as rubber, and is heavy. After draining the water, the valve core can fall down quickly, and the drain valve can be closed quickly, avoiding water leakage caused by the rubber valve core falling slowly and unable to close quickly. At the same time, the heavy metal material has a knocking effect during the rapid falling process, which can avoid scaling of the sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional view of the overall structure of a leak-proof drain valve in a closed state according to the utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of a leak-proof drain valve of the utility model in an open state;

[0022] Figure 3 This is a structural front view of the main body of a leak-proof drain valve of the utility model;

[0023] Figure 4 This is a top view of the structure of the main body of a leak-proof drain valve of the utility model;

[0024] Figure 5 The utility model is a leak-proof drain valve Figure 4 Sectional view in the AA direction;

[0025] Figure 6 The utility model is a leak-proof drain valve Figure 5 Cross-sectional view in the BB direction;

[0026] Figure 7 This is a structural cross-sectional view of a valve core in a leak-proof drain valve of the utility model;

[0027] Figure 8 The utility model is a leak-proof drain valve Figure 7 Cross-sectional view in CC direction;

[0028] Fig. 9 The utility model is a leak-proof drain valve Figure 7 Cross-sectional view in the middle DD direction;

[0029] In the attached drawings: 1. valve body; 2. valve core; 3. water tank; 4. inlet; 5. outlet; 6. sealing gasket; 7. ring groove; 8. pulling piece; 9. sealing ring; 11. main body; 12. valve seat; 13. pressing sleeve; 14. step; 21. pressing part; 22. guide part; 23. through port; 31. bottom surface; 32. groove; 81. connecting port. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0031] like Figures 1 to 9 As shown, a leak-proof drain valve of a preferred embodiment is shown, comprising: a valve body 1 and a valve core 2, the valve body 1 is used to be installed at the bottom of a water tank 3, the valve body 1 is a hollow structure, the side wall of the valve body 1 has at least one inlet 4 connected to the inside of the valve body 1, the bottom of the valve body 1 has at least one outlet 5 connected to the inside of the valve body 1, the valve core 2 is movably arranged in the valve body 1 along the longitudinal direction, and is sealed with the outlet 5, a sealing gasket 6 is provided between the valve core 2 and the valve body 1 along the longitudinal direction, and the valve core 2 is made of metal.

[0032] Preferably, the valve core 2 is made of heavy metal material such as copper, stainless steel, iron, aluminum or metal alloy.

[0033] Further, as a preferred embodiment, the sealing gasket 6 is installed on the valve core 2 and / or the valve body 1 .

[0034] Preferably, at least one annular groove 7 is provided on the valve core 2 and / or the valve body 1 , and at least a portion of the sealing gasket 6 is clamped in the annular groove 7 to fix the sealing gasket 6 .

[0035] Further, as a preferred embodiment, the valve body 1 includes a main body 11 and a valve seat 12 that are connected to each other, the inlet 4 is arranged on the side wall of the main body 11, the outlet 5 is arranged at the bottom of the valve seat 12, the valve core 2 is sealed and matched with the valve seat 12, and the sealing gasket 6 is installed on the valve core 2 and / or the valve seat 12.

[0036] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention.

[0037] The utility model also has the following implementation methods based on the above:

[0038] In further embodiments of the present invention, please continue to refer to Figures 1 to 9 As shown, the valve body 1 further includes: a press sleeve 13 , the valve seat 12 passes through the water tank 3 , the press sleeve 13 is installed on the valve seat 12 , and the bottom of the water tank 3 is limited between the valve seat 12 and the press sleeve 13 .

[0039] In a further embodiment of the utility model, the bottom of the water tank 3 has a bottom surface 31, the water tank 3 is located on the bottom surface 31 and a groove 32 is opened, the body 11 is arranged in the groove 32, the valve seat 12 passes through the bottom of the groove 32, the lowest point of the inlet 4 is not higher than the lowest point of the bottom surface 31, and the water tank 3 is located at the bottom of the groove 32 and is limited between the valve seat 12 and the pressing sleeve 13.

[0040] Preferably, a plurality of inlets 4 are provided on the circumferential side of the body 11 , and the plurality of inlets 4 are arranged at equal intervals along the circumferential direction of the body, and the lowest points of all the inlets 4 are not higher than the lowest point of the bottom surface 31 .

[0041] In a further embodiment of the utility model, the valve core 2 includes a pressing portion 21 and a guide portion 22 connected to each other, the pressing portion 21 and the valve seat 12 are limitedly matched, the sealing gasket 6 is installed on the pressing portion 21 and / or the valve seat 12, and the guide portion 22 extends into the outlet 5.

[0042] In a further embodiment of the present invention, the interior and the bottom of the guide portion 22 are hollow, and the side wall of the guide portion 22 has at least one through hole 23 communicating with the interior thereof.

[0043] Preferably, a plurality of through openings 23 are provided on the side wall of the guide portion 22, and the plurality of through openings 23 are arranged at equal intervals along the circumferential direction of the guide portion.

[0044] In a further embodiment of the utility model, the pressing portion 21 is movably disposed in the body 11 , the outer periphery of the pressing portion 21 is slidably matched with the inner periphery of the body 11 , the top of the body 11 has a step 14 , and the top of the pressing portion 21 is limitedly matched with the step 14 .

[0045] In a further embodiment of the present invention, a lifting member 8 is provided on the top of the valve core 2 , and the lifting member 8 passes through the top of the valve body 1 .

[0046] Preferably, the lifting member 8 is a lifting rope.

[0047] Preferably, the top of the valve core 2 has a connecting port 81 , and the lifting member 8 passes through the connecting port 81 .

[0048] In a further embodiment of the utility model, a sealing ring 9 is provided between the valve seat 12 and the box body 3 .

[0049] The valve core 2 of the utility model adopts metal material instead of existing light materials such as rubber, and is heavy. After draining the water, the valve core 2 can fall quickly to quickly close the drain valve, avoiding water leakage caused by the rubber valve core falling slowly and unable to close quickly. At the same time, the heavy metal material has a knocking effect during the rapid falling process, which can avoid scaling of the sealing gasket.

[0050] First embodiment:

[0051] The sealing gasket 6 is fixed on the valve core 2. The valve core 2 is provided with an annular groove 7 on its circumference. The inner circumference of the sealing gasket 6 is clamped in the annular groove 7. The upper side of the sealing gasket 6 abuts against the valve core 2, and the lower side of the sealing gasket 6 is sealed and matched with the valve body 1.

[0052] Second embodiment:

[0053] The sealing gasket 6 is fixed on the valve body 1 . The valve body 1 is provided with an annular groove 7 . The sealing gasket 6 is clamped in the annular groove 7 . The bottom of the valve core 2 is sealed with the upper side of the sealing gasket 6 .

[0054] Third embodiment:

[0055] A sealing gasket 6 is fixed on the valve core 2 and the valve body 1. An annular groove 7 is provided on the circumference of the valve core 2. The inner circumference of the sealing gasket 6 is clamped in the annular groove 7 of the valve core 2. An annular groove 7 is provided on the valve body 1. The sealing gasket 6 is clamped in the annular groove 7 of the valve body 1. The lower side of the sealing gasket 6 on the valve core 2 is sealed with the upper side of the sealing gasket 6 on the valve body 1.

[0056] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A leak-proof drain valve, characterized in that: include: A valve body, the valve body is used to be installed at the bottom of the water tank, the valve body is a hollow structure, the side wall of the valve body has at least one inlet connected to the interior of the valve body, and the bottom of the valve body has at least one outlet connected to the interior of the valve body; A valve core is movably arranged in the valve body along the longitudinal direction and cooperates with the outlet plug. A sealing gasket is arranged between the valve core and the valve body along the longitudinal direction. The valve core is made of metal.

2. The anti-leakage drain valve according to claim 1, characterized in that: The sealing gasket is installed on the valve core and / or the valve body.

3. The anti-leakage drain valve according to claim 2, characterized in that: The valve body includes a main body and a valve seat connected to each other, the inlet is arranged on the side wall of the main body, the outlet is arranged at the bottom of the valve seat, the valve core is sealed and matched with the valve seat, and the sealing gasket is installed on the valve core and / or the valve seat.

4. The anti-leakage drain valve according to claim 3, characterized in that: The valve body further comprises: a pressing sleeve, the valve seat passes through the water tank, the pressing sleeve is installed on the valve seat, and the bottom of the water tank is limited to be located between the valve seat and the pressing sleeve.

5. The anti-leakage drain valve according to claim 4, characterized in that: The bottom of the water tank has a bottom surface, the water tank is located on the bottom surface and a groove is opened, the body is arranged in the groove, the valve seat passes through the bottom of the groove, the lowest point of the inlet is not higher than the lowest point of the bottom surface, and the water tank is located at the bottom of the groove and is limited to between the valve seat and the pressure sleeve.

6. The anti-leakage drain valve according to claim 5, characterized in that: The valve core comprises a pressing portion and a guiding portion which are connected to each other. The pressing portion and the valve seat are limitedly matched with each other. The sealing gasket is installed on the pressing portion and / or the valve seat. The guiding portion extends into the outlet.

7. The anti-leakage drain valve according to claim 6, characterized in that: The interior of the guide part is hollow, and the side wall of the guide part is provided with at least one through opening communicating with the interior of the guide part.

8. The anti-leakage drain valve according to claim 6, characterized in that: The pressing part is movably arranged in the main body, the outer periphery of the pressing part is slidably matched with the inner periphery of the main body, the top of the main body is provided with a step, and the top of the pressing part is limitedly matched with the step.

9. The anti-leakage drain valve according to claim 1, characterized in that: A lifting piece is provided on the top of the valve core, and the lifting piece passes through the top of the valve body.

10. The anti-leakage drain valve according to claim 3, characterized in that: A sealing ring is arranged between the valve seat and the water tank.

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