Clamping and pressing quick-connection stop valve

Abstract

The utility model discloses a clamping and pressing quick-connection stop valve, which relates to the technical field of stop valves, and comprises a valve body, a clamping and pressing mechanism, a first sealing mechanism and a second sealing mechanism, external pipes are arranged at two ends of the valve body in a penetrating manner, the clamping and pressing mechanism is arranged on the outer wall of the valve body, and the clamping and pressing mechanism is used for connecting the valve body with the external pipes; the first sealing mechanism is arranged on the inner wall of the valve body, and the second sealing mechanism is arranged at the end of the external pipe. The external connecting pipe and the valve body are fixed through the clamping and pressing mechanism, then the clamping and pressing position is sealed through the first sealing mechanism, and then the abutting position of the external connecting pipe and the valve body is sealed through the second sealing mechanism, so that when the annular groove cannot be stably sealed due to the fact that deformation of the clamping and pressing mechanism is uneven, the sealing effect is good, and the sealing effect is good. And the second sealing mechanism can be used for sealing, so that the use stability of the stop valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of stop valve technology, and in particular to a press-fit quick-connect stop valve. Background Technology

[0002] In fluid transport systems, shut-off valves are an important control element and are widely used in pipeline systems to realize the opening, closing and regulation of fluids.

[0003] Traditional gate valves are usually fixed to external pipelines by means of threaded connection, flange connection or welding. Although these methods are reliable, they have problems such as complicated installation, inconvenient disassembly or the need for special tools. In order to simplify the installation process and improve the connection efficiency, press-fit quick-connect gate valves have been gradually promoted. They achieve quick connection between the valve body and the external pipeline by press-fitting.

[0004] Press-fit quick-connect stop valves typically use O-rings for sealing at the press-fit position. This is achieved by the clamping action compressing the O-ring through clamp deformation. However, during the press-fit operation, the deformation is an overall inward contraction, which can lead to uneven contraction at the press-fit position. This results in uneven force on the O-ring, affecting the sealing effect. Therefore, we propose a press-fit quick-connect stop valve with better sealing performance. Utility Model Content

[0005] The purpose of this invention is to provide a quick-connect shut-off valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-connect shut-off valve, comprising:

[0007] The valve body has external connecting pipes inserted at both ends;

[0008] A clamping mechanism is provided on the outer wall of the valve body and is used to connect the valve body to the outer pipe.

[0009] A first sealing mechanism is disposed on the inner wall of the valve body;

[0010] The second sealing mechanism is located at the end of the outer pipe.

[0011] Preferably, the clamping mechanism includes an annular protrusion located on the outside of the valve body, and the first sealing mechanism is positioned opposite the clamping mechanism.

[0012] Preferably, the first sealing mechanism includes:

[0013] An annular groove is formed on the inner wall of the valve body, and the annular groove is opposite to the annular protrusion.

[0014] The O-ring is fitted inside the annular groove, and the outer connecting pipe is inserted into the inner wall of the O-ring.

[0015] Preferably, the second sealing mechanism includes:

[0016] The second rubber ring is disposed between the outer pipe and the valve body, and the outer diameter of the second rubber ring is the same as the outer diameter of the outer pipe.

[0017] The first rubber ring is fixedly sleeved on the outer wall of the second rubber ring and is sleeved on the end of the outer pipe. The inner wall of the valve body has a rounded chamfer on its side.

[0018] Preferably, a valve cover is installed at the top of the valve body, a baffle plate is raised and lowered below the valve cover, and a gasket is provided at the bottom of the baffle plate.

[0019] Preferably, the bottom end of the valve cover and the top end of the valve body are provided with slots, and sealing rings are installed inside the two slots.

[0020] Preferably, the inner wall of the valve cover is threaded with a valve stem, the bottom end of the valve stem is provided with a countersunk hole, a valve pin is fixedly inserted inside the countersunk hole, and the bottom end of the valve pin is fixedly connected to the top end of the baffle plate.

[0021] Preferably, a pressure cap is provided at the top of the inner wall of the valve cover, the valve stem is inserted into the inner wall of the pressure cap, and a packing is provided between the pressure cap and the valve stem.

[0022] Preferably, a rotating handle is fitted onto the top of the valve stem, and a pan head screw is inserted through the inner wall of the rotating handle, the pan head screw being threadedly connected to the top of the valve stem.

[0023] The technical effects and advantages of this utility model are as follows:

[0024] This utility model uses a clamping mechanism to fix the outer pipe to the valve body, then uses a first sealing mechanism to seal the clamping position, and then uses a second sealing mechanism to seal the contact position between the outer pipe and the valve body. This allows the second sealing mechanism to seal the annular groove even when the clamping mechanism is not deformed evenly, thus improving the stability of the shut-off valve. Attached Figure Description

[0025] Figure 1 This is a front cross-sectional view of the present invention.

[0026] Figure 2 This is a front cross-sectional view of the first rubber ring of this utility model.

[0027] In the diagram: 101, valve body; 102, external connecting pipe; 201, first rubber ring; 301, second rubber ring; 401, annular protrusion; 402, annular groove; 403, O-ring; 501, valve cover; 502, baffle plate; 503, gasket; 601, retaining groove; 602, sealing ring; 701, valve stem; 702, valve pin; 703, countersunk hole; 801, pressure cap; 901, rotating handle; 902, pan head screw. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides, for example Figures 1-2 The quick-connect shut-off valve shown includes a valve body 101, a clamping mechanism, a first sealing mechanism, and a second sealing mechanism. External connecting pipes 102 are inserted into both ends of the valve body 101. The clamping mechanism is located on the outer wall of the valve body 101 and is used to connect the valve body 101 to the external connecting pipes 102. The first sealing mechanism is located on the inner wall of the valve body 101, and the second sealing mechanism is located at the end of the external connecting pipes 102. The clamping mechanism fixes the external connecting pipes 102 to the valve body 101. The first sealing mechanism seals the clamping position, and the second sealing mechanism seals the contact position between the external connecting pipes 102 and the valve body 101. This design allows for sealing even when the clamping mechanism deforms unevenly, preventing the annular groove 402 from sealing stably, thus improving the stability of the shut-off valve.

[0030] The clamping mechanism includes an annular protrusion 401, which is located on the outside of the valve body 101. The first sealing mechanism is positioned opposite to the clamping mechanism and includes an annular groove 402 and an O-ring 403. The annular groove 402 is located on the inner wall of the valve body 101 and is positioned opposite to the annular protrusion 401. The O-ring 403 is clamped inside the annular groove 402. The outer pipe 102 is inserted into the inner wall of the O-ring 403. After the outer pipe 102 is inserted into the valve body 101, the annular protrusion 401 is squeezed by the clamp, causing the annular protrusion 401 to shrink and deform, squeezing the inner wall of the outer pipe 102, thus connecting the outer pipe 102 to the valve body 101. At the same time as the deformation, the O-ring 403 is squeezed against the inner wall of the outer pipe 102, thus sealing the connection between the outer pipe 102 and the valve body 101.

[0031] The second sealing mechanism includes a first rubber ring 201 and a second rubber ring 301. The second rubber ring 301 is disposed between the outer pipe 102 and the valve body 101. The outer diameter of the second rubber ring 301 is the same as that of the outer pipe 102. The first rubber ring 201 is fixedly sleeved on the outer wall of the second rubber ring 301 and sleeved on the end of the outer pipe 102. The inner wall of the valve body 101 has a rounded chamfer on its side. Before the outer pipe 102 is inserted into the valve body 101, the first rubber ring 201 is first sleeved on the end of the outer pipe 102, so that the second rubber ring 301 abuts against the outer pipe 102, and then the outer pipe 102 is inserted into the valve body 101. The outer pipe 102 is inserted, causing it to abut against the valve body 101. Then, it is clamped and fixed at the clamping mechanism position. This strengthens the sealing effect through the first rubber ring 201 and the second rubber ring 301. The second rubber ring 301 prevents the outer pipe 102 from moving within the valve body 101, thus preventing the first rubber ring 201 from shifting. Simultaneously, the clamping fixation fixes the position of the outer pipe 102 against the valve body 101, preventing further movement of the outer pipe 102 within the valve body 101. This ensures that the second rubber ring 301 remains firmly against the valve body 101, resulting in a better sealing effect through the double seal of the second rubber ring 301 and the first rubber ring 201.

[0032] The valve body 101 has a valve cover 501 installed at the top, a baffle plate 502 that is raised and lowered below the valve cover 501, and a gasket 503 at the bottom of the baffle plate 502. Both the bottom of the valve cover 501 and the top of the valve body 101 have slots 601, and sealing rings 602 are installed inside the two slots 601. The sealing rings 602 seal the valve cover 501 and the valve body 101. Then, when the baffle plate 502 moves down, the gasket 503 is pressed tightly against the valve port, which closes the shut-off valve. When the baffle plate 502 moves up, the gasket 503 is separated from the valve port, which opens the shut-off valve.

[0033] The valve cover 501 is threadedly connected to the inner wall of the valve stem 701. The bottom end of the valve stem 701 is provided with a countersunk hole 703. A valve pin 702 is fixedly inserted inside the countersunk hole 703. The bottom end of the valve pin 702 is fixedly connected to the top end of the baffle plate 502. By rotating the valve stem 701 inside the valve cover 501, the baffle plate 502 can be raised and lowered, thereby improving the ease of operation of the baffle plate 502.

[0034] The valve cover 501 has a pressure cap 801 on the top of its inner wall. The valve stem 701 is inserted into the inner wall of the pressure cap 801. Packing is provided between the pressure cap 801 and the valve stem 701. The packing seals the pressure cap 801 with the valve cover 501 and the valve stem 701, ensuring the stable use of the shut-off valve.

[0035] The valve stem 701 has a rotating handle 901 fitted at its top end. A pan head screw 902 is inserted into the inner wall of the rotating handle 901 and threaded onto the top end of the valve stem 701. By setting the rotating handle 901 and fixing it to the valve stem 701 with the pan head screw 902, the valve stem 701 can be rotated by rotating the rotating handle 901, which increases the rotational lever arm of the valve stem 701 and makes the shut-off valve easier to operate.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-connect stop valve, characterized in that, include: The valve body (101) has external connecting pipes (102) inserted at both ends; A clamping mechanism is provided on the outer wall of the valve body (101) and is used to connect the valve body (101) and the outer pipe (102); The first sealing mechanism is disposed on the inner wall of the valve body (101); The second sealing mechanism is disposed at the end of the outer pipe (102).

2. The quick-connect shut-off valve according to claim 1, characterized in that, The clamping mechanism includes an annular protrusion (401) which is located on the outside of the valve body (101), and the first sealing mechanism is positioned opposite to the clamping mechanism.

3. A quick-connect shut-off valve according to claim 2, characterized in that, The first sealing mechanism includes: An annular groove (402) is formed on the inner wall of the valve body (101), and the annular groove (402) is opposite to the annular protrusion (401). The O-ring (403) is fitted inside the annular groove (402), and the outer pipe (102) is inserted into the inner wall of the O-ring (403).

4. A quick-connect shut-off valve according to claim 1, characterized in that, The second sealing mechanism includes: The second rubber ring (301) is disposed between the outer pipe (102) and the valve body (101), and the outer diameter of the second rubber ring (301) is the same as the outer diameter of the outer pipe (102). The first rubber ring (201) is fixedly sleeved on the outer wall of the second rubber ring (301). The first rubber ring (201) is sleeved on the end of the outer pipe (102). The inner wall of the valve body (101) has a rounded chamfer on its side.

5. A quick-connect shut-off valve according to claim 1, characterized in that, A valve cover (501) is installed at the top of the valve body (101), and a baffle plate (502) is raised and lowered below the valve cover (501). A gasket (503) is provided at the bottom of the baffle plate (502).

6. A quick-connect shut-off valve according to claim 5, characterized in that, The bottom end of the valve cover (501) and the top end of the valve body (101) are provided with slots (601), and sealing rings (602) are installed inside the two slots (601).

7. A quick-connect shut-off valve according to claim 5, characterized in that, The valve cover (501) has a valve stem (701) threadedly connected to its inner wall. The bottom end of the valve stem (701) has a countersunk hole (703). A valve pin (702) is fixedly inserted inside the countersunk hole (703). The bottom end of the valve pin (702) is fixedly connected to the top end of the baffle plate (502).

8. A quick-connect shut-off valve according to claim 7, characterized in that, A pressure cap (801) is provided on the top of the inner wall of the valve cover (501), and the valve stem (701) is inserted into the inner wall of the pressure cap (801). A packing is provided between the pressure cap (801) and the valve stem (701).

9. A quick-connect shut-off valve according to claim 7, characterized in that, A rotating handle (901) is sleeved on the top of the valve stem (701), and a pan head screw (902) is inserted through the inner wall of the rotating handle (901). The pan head screw (902) is threaded to the top of the valve stem (701).

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