Anti-freezing joint and water mixing valve

Abstract

The utility model discloses an anti-freezing connector which comprises a connector body, a water flow channel is arranged in the connector body, and a water inlet, a water outlet and a valve hole which are communicated with the water flow channel are formed in the connector body. The pressure release valve comprises a plug pipe, the plug pipe is movably and detachably arranged at the valve hole to plug or open the valve hole, and an opening in one end of the plug pipe is communicated with the interior of the plug pipe and the water flow channel; the piston is movably arranged in the plug pipe, at least one first annular groove is formed in the side wall of the piston, and a first sealing ring is arranged in the first annular groove. Water leakage caused by the fact that water flows out from a gap between the piston and the inner wall of the plug pipe can be effectively prevented, the volume of a water flow channel can be indirectly increased through movement of the piston, water pressure in the connector body is reduced, and the connector body is prevented from being burst and damaged due to overlarge pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipe joints, in particular to an antifreeze joint and a water mixing valve. Background Art

[0002] In daily life, joints are often used to connect and install different pipe fittings. For example, in a shower mixing valve, there may be a certain distance between the mixing valve and the water pipe, and the eccentricity is large. Joints can be used to connect the faucet and the water pipe. Therefore, joints are widely used in daily life. A Chinese utility model patent with announcement number CN204153368U discloses an antifreeze joint, in which a pressure relief valve is arranged in the body, the pressure relief valve comprises a pressure relief valve body having a cavity, an elastic member arranged in the cavity and connected to the inner wall of the cavity at one end, a movable gasket arranged in the cavity and connected to the other end of the elastic member, and a pressure relief hole arranged at a position of the pressure relief valve body corresponding to the movable gasket and connected to the water flow channel. The elastic member contracts and drives the movable gasket to slide in the cavity. When the device is in a low temperature environment, the volume of water freezes and expands, and the elastic member is compressed, thereby effectively alleviating the pressure in the body caused by the expansion of the volume of water freezing, and can effectively prevent the body from being damaged by excessive pressure on the expansion of the volume of water freezing. However, the movable gasket has poor waterproof performance. When ice forms or the water pressure is very high, the movable gasket is compressed, and water will easily flow out from the gap between the edge of the movable gasket and the pressure relief valve body, causing water leakage. Utility Model Content

[0003] The utility model provides an antifreeze joint, which achieves the purpose of effectively preventing water leakage by arranging a first sealing ring moving with the piston between the piston and the plugging pipe to seal the gap between the piston and the inner wall of the plugging pipe.

[0004] The utility model provides an antifreeze joint, comprising:

[0005] A joint body, wherein a water flow channel is arranged inside the joint body, and a water inlet, a water outlet, and a valve hole connected with the water flow channel are arranged on the joint body;

[0006] A pressure relief valve comprising:

[0007] A plugging pipe, which is movably and detachably arranged at the valve hole to block or open the valve hole, and one end of the plugging pipe is opened to connect the inside thereof with the water flow channel;

[0008] The piston is movably arranged in the plug tube, and at least one first annular groove is arranged on the side wall of the piston, and a first sealing ring is arranged in the first annular groove.

[0009] Preferably, in the antifreeze joint, a limiting ring is provided on the inner side wall of one end of the plugging pipe.

[0010] Preferably, in the antifreeze joint, an opening at one end of the plugging tube is opposite to the water inlet and an adjusting part is provided on the inner wall of the joint body between the two, and a water flow space connected to the water flow channel is provided between the plugging tube and the adjusting part, and the water flow space is expanded or contracted when the plugging tube moves away from or close to the adjusting part, and the water flow channel is blocked when the plugging tube contacts and abuts against the adjusting part.

[0011] Preferably, in the antifreeze joint, the adjusting member is an adjusting ring, a second sealing ring is provided at the adjusting ring, a second annular groove is provided on the side wall of the second sealing ring, and the adjusting ring is arranged in the second annular groove.

[0012] Preferably, in the antifreeze joint, a first elastic body is inserted into the water flow channel near the water inlet, and a second elastic body is inserted into the water flow channel near the water outlet.

[0013] Preferably, in the antifreeze joint, the first elastomer and the second elastomer are both tubular and are in contact with the inner wall of the joint body.

[0014] Preferably, in the antifreeze joint, a connecting piece is provided on the joint body, and the connecting piece is detachably connected to a base provided on the wall.

[0015] Preferably, in the antifreeze joint, the pressure relief valve further comprises:

[0016] A pressure regulating block, which is movably arranged in the plugging pipe;

[0017] An elastic member is arranged in the plugging tube and located between the pressure regulating block and the piston.

[0018] Preferably, in the antifreeze joint, the elastic member is a spring, a connecting groove is provided at one end of the piston, a limiting protrusion is provided on the pressure regulating block, one end of the spring is inserted in the connecting groove, and the other end is sleeved outside the limiting protrusion.

[0019] The utility model also provides a water mixing valve, comprising at least one antifreeze joint described in the utility model, wherein the water outlet of the joint body of the antifreeze joint is communicated with the water inlet of the water mixing valve.

[0020] The utility model at least includes the following beneficial effects: in the utility model, a water flow channel is arranged inside the joint body, a water inlet, a water outlet and a valve hole connected with the water flow channel are arranged on the joint body, a plugging tube of the pressure relief valve is movably and detachably arranged at the valve hole, one end of the plugging tube is opened to connect its interior with the water flow channel, a piston is movably arranged inside the plugging tube, at least one first annular groove is arranged on the side wall of the piston, a first sealing ring is arranged in the first annular groove, when the piston is squeezed and moves in the plugging tube due to excessive water pressure in the water flow channel or volume expansion of water freezing, the first sealing ring seals the gap between the piston and the inner wall of the plugging tube, which can effectively prevent water from flowing out of the gap between the piston and the inner wall of the plugging tube to cause water leakage; and the movement of the piston can indirectly increase the volume of the water flow channel, reduce the water pressure in the joint body, and prevent the joint body from bursting and being damaged due to excessive pressure.

[0021] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the internal structure of an antifreeze joint in one of the technical solutions of the utility model;

[0023] Figure 2 It is a three-dimensional diagram of an antifreeze joint in one technical solution of the utility model;

[0024] Figure 3 It is a three-dimensional diagram of the first elastic body in one technical solution of the utility model;

[0025] Figure 4 It is a three-dimensional diagram of the second elastic body in one technical solution of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a water mixing valve in another technical solution of the utility model;

[0027] Among them, 1-the second sealing ring, 2-the first elastomer, 3-the water inlet, 4-the water flow channel, 5-the adjusting ring, 6-the connecting piece, 7-the fixing tube, 8-the base, 9-the limiting ring, 10-the plugging tube, 11-the third sealing ring, 12-the spring, 13-the limiting protrusion, 14-the pressure regulating block, 15-the valve hole, 16-the connecting groove, 17-the piston, 18-the first sealing ring, 19-the water outlet, 20-the water flow space, 21-the second elastomer, 22-the joint body, 23-the straight groove, 24-the moving hole, 25-the mixing valve. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood in specific circumstances. The orientation or position relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0031] like Figure 1 , Figure 2 As shown, the present application provides an antifreeze joint, comprising:

[0032] The joint body 22 has a water flow channel 4 disposed therein, and the joint body 22 is provided with a water inlet 3, a water outlet 19, and a valve hole 15 connected to the water flow channel 4;

[0033] A pressure relief valve comprising:

[0034] A plugging pipe 10 is movably and detachably arranged at the valve hole 15 to block or open the valve hole 15, and one end of the plugging pipe 10 is opened to connect the inside thereof with the water flow channel 4;

[0035] The piston 17 is movably arranged in the plug tube 10 , and at least one first annular groove is arranged on the side wall of the piston 17 , and a first sealing ring 18 is arranged in the first annular groove.

[0036] The antifreeze joint provided by the technical solution is mainly composed of a joint body 22 and a pressure relief valve detachably mounted on the joint body 22. A water flow channel 4 is arranged inside the joint body 22. The joint body 22 is provided with a water inlet 3, a water outlet 19 and a valve hole 15 connected to the water flow channel 4. The pressure relief valve comprises a plugging tube 10 detachably arranged at the valve hole 15 and a piston 17 movably arranged in the plugging tube 10. The plugging tube 10 can be moved at the valve hole 15 to change the width of the water flow channel 4 to adjust the water flow rate. The valve hole 15 can be opened or blocked by disassembling the plugging tube 10. At least one first annular groove is arranged on the side wall of the piston 17. A first sealing ring 18 is arranged in the first annular groove to block the gap between the piston 17 and the side wall of the plugging tube 10. One end of the plugging tube 10 is opened to connect its interior with the water flow channel 4. When the water pressure is too large or the water in the water flow channel 4 freezes and expands in volume, the piston 17 will be pushed to move in the plugging tube 10 to avoid bursting the joint body 22.

[0037] The working principle of the antifreeze joint of the present technical solution is as follows: the plugging tube 10 is arranged at the valve hole 15 to block the valve hole 15, and water enters from the water inlet 3 and fills the water flow channel 4 before flowing out from the water outlet 19. Moving the plugging tube 10 can change the intercepting area of ​​the water flow channel 4, thereby adjusting the amount of water flow; when the water pressure in the water flow channel 4 is too high or the volume of water expands due to freezing, water will enter the plugging tube 10 from one end opening of the plugging tube 10 to squeeze the piston 17, causing the piston 17 to move, thereby indirectly increasing the volume of the water flow channel 4 and achieving the purpose of pressure relief. At the same time, the first sealing ring 18 moves with the piston 17 and blocks the gap between the piston 17 and the plugging tube 10 to prevent water leakage due to deformation of the piston 17 due to excessive pressure.

[0038] The technical solution includes at least the following beneficial effects: a water flow channel 4 is arranged inside the joint body 22, a water inlet 3, a water outlet 19, and a valve hole 15 connected to the water flow channel 4 are arranged on the joint body 22, a plugging pipe 10 of the pressure relief valve is movably and detachably arranged at the valve hole 15, one end of the plugging pipe 10 is opened to connect its interior with the water flow channel 4, a piston 17 is movably arranged inside the plugging pipe 10, at least one first annular groove is arranged on the side wall of the piston 17, a first sealing ring 18 is arranged in the first annular groove, when the piston 17 is affected by water When the water pressure in the flow channel 4 is too high or the water expands when frozen and is squeezed to move in the plug tube 10, the first sealing ring 18 seals the gap between the piston 17 and the inner wall of the plug tube 10, which can effectively prevent water from flowing out of the gap between the piston 17 and the inner wall of the plug tube 10 and causing water leakage; and the movement of the piston 17 can indirectly increase the volume of the water flow channel 4, reduce the water pressure in the joint body 22, and prevent the joint body 22 from bursting and being damaged due to excessive pressure; moving the plug tube 10 can change the cut-off area of ​​the water flow channel 4, thereby flexibly adjusting the water flow rate.

[0039] In another technical solution, Figure 1 As shown, in the antifreeze joint, a limiting ring 9 is provided on the inner side wall of one end of the plugging pipe 10 to prevent the piston 17 from moving excessively and detaching from the plugging pipe 10 to enter the water flow channel 4.

[0040] In another technical solution, Figure 1 As shown, in the antifreeze joint, one end opening of the plug tube 10 is opposite to the water inlet 3 and an adjusting part is provided on the inner wall of the joint body 22 between the two. A water flow space 20 connected to the water flow channel 4 is provided between the plug tube 10 and the adjusting part. When the plug tube 10 moves away from or close to the adjusting part, the water flow space 20 is expanded or reduced. When the plug tube 10 contacts and abuts against the adjusting part, the water flow channel 4 is blocked. The insertion depth of the plug tube 10 in the valve hole 15 is adjusted to move the plug tube 10 away from or close to the adjusting part to change the size of the water flow space, thereby realizing the interception of water in the water flow channel 4 to change the size of the water flow.

[0041] In another technical solution, Figure 1 As shown, in the antifreeze joint, the adjusting member is an adjusting ring 5, a second sealing ring 1 is arranged at the adjusting ring 5, a second annular groove is arranged on the side wall of the second sealing ring 1, and the adjusting ring 5 is arranged in the second annular groove. The second sealing ring 1 is covered on the outside of the adjusting ring 5, and when the adjusting ring 5 contacts and abuts against the plugging pipe 10, the elastic second sealing ring 1 between the adjusting ring 5 and the plugging pipe 10 plays a good sealing role.

[0042] In another technical solution, Figure 1 As shown, in the antifreeze joint, a first elastic body 2 is inserted into the water flow channel 4 near the water inlet 3, and a second elastic body 21 is inserted into the water flow channel 4 near the water outlet 19. The first elastic body 2 and the second elastic body 21 can be directly inserted into or pulled out of the joint body from the water inlet 3 and the water outlet 19, which is convenient for disassembly and assembly; the first elastic body 2 and the second elastic body 21 can both be made of foamed silicone, and when the water pressure in the water flow channel 4 is too high or the water freezes and expands, the first elastic body 2 and the second elastic body 21 can be compressed to increase the volume of the water flow channel 4 and buffer the pressure.

[0043] In another technical solution, Figure 1 , Figure 3 , Figure 4As shown, in the antifreeze joint, the first elastic body 2 and the second elastic body 21 are both tubular and are attached to the inner wall of the joint body 22. A moving hole 24 is provided on the side wall of the second elastic body 21 for the plug pipe 10 to move through; after the water flows into the water flow channel 4, it flows in the first elastic body 2 and the second elastic body 21, reducing the direct contact area between the water and the joint body, so as to protect the joint body.

[0044] In another technical solution, Figure 1 , Figure 2 As shown, in the antifreeze joint, a connector 6 is provided on the joint body 22, and the connector 6 is detachably connected to a base 8 provided on the wall. The connector 6 is a connecting pipe, and a fixing pipe 7 is provided on the base 8, and the connecting pipe is sleeved outside the fixing pipe 7 through a threaded structure, so as to facilitate the disassembly, assembly and fixing of the antifreeze joint.

[0045] In another technical solution, Figure 1 As shown, in the antifreeze joint, the pressure relief valve also includes:

[0046] A pressure regulating block 14, which is movably arranged in the plugging pipe 10;

[0047] The elastic member is arranged in the plugging tube 10 and between the pressure regulating block 14 and the piston 17. The pressure regulating block 14 is movably connected to the plugging tube 10 through a threaded structure; by adjusting the position of the pressure regulating block 14, the compression state of the elastic member can be adjusted, thereby flexibly adjusting the movement pressure of the piston 17.

[0048] In another technical solution, Figure 1 As shown, in the antifreeze joint, the elastic member is a spring 12, a connecting groove 16 is provided at one end of the piston 17, a limiting protrusion 13 is provided on the pressure regulating block 14, one end of the spring 12 is inserted in the connecting groove 16, and the other end is sleeved outside the limiting protrusion 13.

[0049] In another technical solution, in the antifreeze joint, the plugging pipe is movably connected to the side wall of the joint body between the valve hole and the water flow channel through a threaded structure, and the plugging pipe and the joint body are detachably connected and movably connected, which is convenient for disassembly, assembly and adjustment.

[0050] In another technical solution, Figure 1 As shown, in the antifreeze joint, a third annular groove is provided on the outer wall of the plugging pipe 10, and a third sealing ring 11 is provided in the third annular groove to improve the sealing performance between the plugging pipe 10 and the joint body to prevent water leakage.

[0051] In another technical solution, Figure 2As shown, in the antifreeze joint, a slot 23 is provided on the end surface of the plug pipe 10 facing the outside of the joint body, so as to facilitate the movement and disassembly of the plug pipe 10.

[0052] like Figure 5 As shown, the utility model also provides a water mixing valve 25, comprising at least one antifreeze joint as described in any of the above technical solutions, wherein the water outlet 19 of the joint body 22 of the antifreeze joint is connected to the water inlet 3 of the water mixing valve 25. The pressure-bearing antifreeze capability and environmental adaptability of the water mixing valve 25 are improved.

[0053] The number of devices and processing scales described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.

[0054] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Antifreeze joint, characterized in that: include: A joint body, wherein a water flow channel is arranged inside the joint body, and a water inlet, a water outlet, and a valve hole connected with the water flow channel are arranged on the joint body; A pressure relief valve comprising: A plugging pipe, which is movably and detachably arranged at the valve hole to block or open the valve hole, and one end of the plugging pipe is opened to connect the inside thereof with the water flow channel; The piston is movably arranged in the plug tube, and at least one first annular groove is arranged on the side wall of the piston, and a first sealing ring is arranged in the first annular groove.

2. The antifreeze joint according to claim 1, characterized in that: A limiting ring is arranged on the inner side wall of one end of the plugging pipe.

3. The antifreeze joint according to claim 2, characterized in that: One end opening of the plugging tube is opposite to the water inlet and an adjusting part is provided on the inner wall of the joint body between the two, and a water flow space connected to the water flow channel is provided between the plugging tube and the adjusting part. When the plugging tube moves away from or close to the adjusting part, the water flow space is expanded or reduced, and when the plugging tube contacts and abuts against the adjusting part, the water flow channel is blocked.

4. The antifreeze joint according to claim 3, characterized in that: The adjusting member is an adjusting ring, a second sealing ring is arranged at the adjusting ring, a second annular groove is arranged on the side wall of the second sealing ring, and the adjusting ring is arranged in the second annular groove.

5. The antifreeze joint according to claim 1, characterized in that: A first elastic body is inserted into the water flow channel close to the water inlet, and a second elastic body is inserted into the water flow channel close to the water outlet.

6. The antifreeze joint according to claim 5, characterized in that: The first elastic body and the second elastic body are both tubular and are in contact with the inner wall of the joint body.

7. The antifreeze joint according to claim 1, characterized in that: The joint body is provided with a connecting piece, and the connecting piece is detachably connected to a base arranged on the wall.

8. The antifreeze joint according to claim 1, characterized in that: The pressure relief valve further comprises: A pressure regulating block, which is movably arranged in the plugging pipe; An elastic member is arranged in the plugging tube and located between the pressure regulating block and the piston.

9. The antifreeze joint according to claim 8, characterized in that: The elastic member is a spring, one end of the piston is provided with a connecting groove, the pressure regulating block is provided with a limiting protrusion, one end of the spring is inserted in the connecting groove, and the other end is sleeved outside the limiting protrusion.

10. A water mixing valve, characterized in that: It comprises at least one antifreeze joint as claimed in any one of claims 1 to 9, wherein the water outlet of the joint body of the antifreeze joint is connected with the water inlet of the mixing valve.

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