Check valve with anti-freezing effect

Abstract

The utility model relates to the technical field of check valves, in particular to a check valve with an anti-freezing effect, which comprises a valve, the lower end of the valve is fixedly connected with a first connecting end, one side of the valve is fixedly connected with a second connecting end, the inner wall of the valve is rotatably connected with a handle, and the surface of the valve is provided with a protective device. The protection device comprises a stabilizing sleeve and a heat preservation core, the stabilizing sleeve is arranged on the valve in a sleeving mode, a containing groove is formed in the surface of the stabilizing sleeve, one end of the heat preservation core is inserted into the containing groove, and a top plate is fixedly connected to the upper end of the heat preservation core. According to the scheme, the check valve is simple in structure and convenient to produce, the top plate is opened only when the check valve needs to be adjusted, the valve handle can be stably protected through the heat preservation core, the freezing probability is effectively reduced, normal use of equipment is facilitated, meanwhile, electric power is not needed, potential safety hazards of electric leakage do not exist, and the service life of the check valve is prolonged. And popularization and use are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and in particular to a check valve with antifreeze effect. Background Technology

[0002] A check valve is a type of valve whose opening and closing element is a circular valve disc that relies on its own weight and the pressure of the medium to prevent backflow of the medium. It belongs to the category of automatic valves and is also known as a non-return valve, one-way valve, reflux valve, or isolation valve. The valve disc movement is divided into lifting type and swing type. With the development of society, check valves have been widely used.

[0003] Existing technologies, such as the utility model patent with publication number CN213176905U, disclose a check valve with antifreeze effect, including a valve body, an outlet pipe connected to the right end of the valve body, and an inlet pipe connected to the left end of the valve body. The left end of the inlet pipe is threadedly connected to a connecting pipe, and the inner wall of the connecting pipe has an annular groove. A sealing ring is snapped into the annular groove, and a filter screen is embedded inside the sealing ring. A valve disc is movably connected to the right end of the inlet pipe inside the valve body, and a temperature detector is fixedly connected to the upper right side of the valve body. Several thermal resistance wires are connected to the lower left end of the temperature detector on the inner wall of the valve body. The filter screen helps to reduce impurities entering the inlet pipe, preventing the valve disc from leaking due to impurities. The thermal resistance wires help to heat the valve body to prevent it from freezing. The rotation of the spiral blades helps to quickly and thoroughly drain any remaining water in the valve body to prevent water from remaining in the valve body and freezing.

[0004] The inventors discovered in their daily work that existing technologies use temperature detectors and resistance thermometers for antifreeze operation, which increases the production cost of the equipment. At the same time, when the equipment is used in winter, it is necessary to ensure that the equipment is continuously powered. The resistance thermometer is prone to scaling during use, which can cause the equipment to malfunction. In addition, since the equipment supplies power to the valves, there is a risk of electric leakage when the user operates the valves. Therefore, an improvement in operation is necessary. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of existing technologies that use temperature detectors and resistance wires for antifreeze operation, which increases the production cost of the equipment. At the same time, when the equipment is used in winter, it is necessary to ensure that the equipment is continuously powered. The resistance wire is prone to scaling during use, which can cause the equipment to malfunction. In addition, since the equipment supplies power to the valve, there is a risk of leakage when the user operates the valve. Therefore, this utility model proposes a check valve with antifreeze effect.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a check valve with antifreeze effect, comprising a valve, a first connecting end fixedly connected to the lower end of the valve, a second connecting end fixedly connected to one side of the valve, a handle rotatably connected to the inner wall of the valve, a protective device provided on the surface of the valve, the protective device comprising a stabilizing sleeve and an insulating core, the stabilizing sleeve being fitted onto the valve, a placement groove being formed on the surface of the stabilizing sleeve, one end of the insulating core being inserted into the placement groove, a top plate fixedly connected to the upper end of the insulating core, and an auxiliary device provided on the surface of the valve. This solution has a simple structure, is convenient for production, and only requires opening the top plate when the check valve needs to be adjusted. The insulating core can stably protect the valve handle, effectively reducing the probability of freezing and facilitating normal use of the equipment. Furthermore, this solution does not require electricity, eliminating the safety hazard of electric leakage, and is easy to widely adopt.

[0007] Preferably, the surface of the stabilizing sleeve is provided with a limiting groove, and the surface of the top plate is fixedly connected with a hook. One end of the hook is inserted into the limiting groove to facilitate the assembly of the heat insulation core and to protect the handle.

[0008] Preferably, the longitudinal section of the hook is L-shaped and the edge of the hook is rounded, so that it can be stably inserted into the limiting groove, which facilitates the use of the equipment.

[0009] Preferably, a spring is fixedly connected to the lower surface of the top plate, and a stop plate is fixedly connected to one end of the spring. The stop plate is located above the handle. When the valve needs to be adjusted, grasp the handle and press down. The top plate then moves the insulation core and the hook downward. The hook moves to the bottom of the limiting groove. Then, turn the handle. The hook then moves to the other side of the limiting groove. Then, pull the handle upward to remove the top plate and the insulation core. Then, the stabilizing sleeve slides down, and the handle is exposed. The handle can then be turned to control the check valve.

[0010] Preferably, the auxiliary device includes a stop block, which is fixedly connected to the surface of the valve. A retaining sleeve is fixedly connected to the lower surface of the stabilizing sleeve, and the retaining sleeve is fitted onto the stop block. After adjustment, the stabilizing sleeve is pulled upward, and then fitted onto the handle. The insulation core is then inserted into the placement groove, and then the handle is pressed downward. The handle causes the insulation core and the retaining hook to move downward, and the spring deforms under force. When the retaining hook is inserted into the bottom of the limiting groove, the handle is rotated, and then the retaining hook moves to the other side of the limiting groove. Then the handle is slowly released, the spring returns to its original position, and the spring pushes the top plate upward. The top plate then causes the retaining hook to engage in the limiting groove, completing the operation.

[0011] Preferably, a handle is fixedly connected to the upper surface of the top plate, so that the insulation core can be removed and placed by pulling the handle.

[0012] Preferably, a cover is fixedly connected to the side surface of the top plate, and an auxiliary groove is provided on the surface of the top plate to effectively guide rainwater.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] In this invention, when valve adjustment is required, grasp the handle and press down. The top plate then moves the insulation core and the hook downwards. The hook moves to the bottom of the limiting groove. Then, rotate the handle, and the hook moves to the other side of the limiting groove. Pull the handle upwards to remove the top plate and insulation core. The stabilizing sleeve then slides down, exposing the handle. The handle can then be rotated to control the check valve. After adjustment, pull the stabilizing sleeve upwards, and the stabilizing sleeve will then be placed on the handle. Insert the insulation core into the placement groove, and then press the handle downwards. The handle moves the insulation core and the hook downwards. When the spring is deformed by the force, and the hook is inserted into the bottom of the limiting groove, the handle is turned, and the hook moves to the other side of the limiting groove. Then, the handle is slowly released, the spring returns to its original position, and the spring pushes the top plate upward. The top plate then drives the hook to engage in the limiting groove, completing the operation. This solution has a simple structure, is convenient for production, and only requires opening the top plate when the check valve needs to be adjusted. The insulation core can stably protect the valve handle, effectively reducing the probability of freezing and facilitating normal use of the equipment. At the same time, this solution does not require electricity, so there is no safety hazard of leakage, making it easy to popularize and use. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a check valve with antifreeze effect is provided for this utility model.

[0016] Figure 2 A bottom view of the structure of a check valve with antifreeze effect is provided for this utility model.

[0017] Figure 3 A partial cross-sectional view of a check valve with antifreeze effect is provided for this utility model.

[0018] Figure 4 This utility model proposes a check valve with antifreeze effect. Figure 3 A schematic diagram of a partial structure;

[0019] Figure 5 This utility model provides a structural diagram of a check valve with antifreeze effect during use.

[0020] Legend:

[0021] 1. Valve; 2. First connecting end; 3. Second connecting end; 4. Handle; 5. Protective device; 51. Stabilizing sleeve; 52. Placement slot; 53. Limiting slot; 54. Insulation core; 55. Support plate; 56. Spring; 57. Hook; 58. Top plate; 6. Auxiliary device; 61. Stop block; 62. Sleeve; 63. Cover; 64. Handle; 65. Auxiliary slot. Detailed Implementation

[0022] Please see Figure 1-5 This utility model provides a technical solution: a check valve with antifreeze effect, including a valve 1, a first connecting end 2 fixedly connected to the lower end of the valve 1, a second connecting end 3 fixedly connected to one side of the valve 1, a handle 4 rotatably connected to the inner wall of the valve 1, a protective device 5 provided on the surface of the valve 1, the protective device 5 including a stabilizing sleeve 51 and a heat-insulating core 54, the stabilizing sleeve 51 is fitted onto the valve 1, the surface of the stabilizing sleeve 51 has a placement groove 52, one end of the heat-insulating core 54 is inserted into the placement groove 52, the upper end of the heat-insulating core 54 is fixedly connected to a top plate 58, and an auxiliary device 6 is provided on the surface of the valve 1. This solution has a simple structure, is convenient for production, and only requires opening the top plate 58 when the check valve needs to be adjusted. The heat-insulating core 54 can stably protect the handle 4 of the valve 1, effectively reducing the probability of freezing and facilitating normal use of the equipment. At the same time, this solution does not require electricity, there is no safety hazard of leakage, and it is easy to popularize and use.

[0023] In this embodiment: a limiting groove 53 is formed on the surface of the stabilizing sleeve 51, and a hook 57 is fixedly connected to the surface of the top plate 58. One end of the hook 57 is inserted into the limiting groove 53 to facilitate the assembly of the heat insulation core 54 and to protect the handle 4.

[0024] Specifically, the longitudinal section of the hook 57 is L-shaped and the edges of the hook 57 are rounded, so that it can be stably inserted into the limiting groove 53, which facilitates the use of the equipment.

[0025] Specifically, a spring 56 is fixedly connected to the lower surface of the top plate 58, and a stop plate 55 is fixedly connected to one end of the spring 56. The stop plate 55 is located above the handle 4. When it is necessary to adjust the valve 1, grasp the handle 64 and press it down. The top plate 58 then drives the insulation core 54 and the hook 57 to move downward. The hook 57 moves to the bottom of the limiting groove 53. Then, turn the handle 64, and the hook 57 moves to the other side of the limiting groove 53. Then, pull the handle 64 upward to remove the top plate 58 and the insulation core 54. Then, the stabilizing sleeve 51 slides down, and the handle 4 is exposed. The handle 4 can then be turned to control the check valve.

[0026] In this embodiment: the auxiliary device 6 includes a stop block 61, which is fixedly connected to the surface of the valve 1. A retainer 62 is fixedly connected to the lower surface of the stabilizing sleeve 51. The retainer 62 is fitted onto the stop block 61. After adjustment, the stabilizing sleeve 51 is pulled upward, and then fitted onto the handle 4. The insulation core 54 is then inserted into the placement groove 52. Then, the handle 64 is pressed downward. The handle 64 causes the insulation core 54 and the hook 57 to move downward. The spring 56 is deformed by force. When the hook 57 is inserted into the bottom of the limiting groove 53, the handle 64 is rotated. Then, the hook 57 moves to the other side of the limiting groove 53. Then, the handle 64 is slowly released, the spring 56 returns to its original position, and the spring 56 pushes the top plate 58 upward. The top plate 58 then causes the hook 57 to engage in the limiting groove 53, completing the operation.

[0027] Specifically, a handle 64 is fixedly connected to the upper surface of the top plate 58, which makes it easy to remove and place the insulation core 54 by pulling the handle 64.

[0028] Specifically, a cover 63 is fixedly connected to the side surface of the top plate 58, and an auxiliary groove 65 is opened on the surface of the top plate 58 to effectively guide rainwater.

[0029] Working principle: When valve 1 needs to be adjusted, grasp handle 64 and press it down. The top plate 58 then moves the insulation core 54 and the hook 57 downwards. The hook 57 moves to the bottom of the limiting groove 53. Then, turn handle 64, and the hook 57 moves to the other side of the limiting groove 53. Then, pull handle 64 upwards to remove the top plate 58 and the insulation core 54. Then, the stabilizing sleeve 51 slides down, exposing the handle 4. The handle 4 can then be turned to control the check valve. After adjustment, pull the stabilizing sleeve 51 upwards, and the stabilizing sleeve 51 will then be placed on the handle 4. Then, insert the insulation core 54 into the placement groove 52. Then, press handle 64 downwards, and handle 64 moves the insulation core 54 and the hook 57 downwards. When hook 57 moves downward, spring 56 deforms under force. When hook 57 is inserted into the bottom of limit groove 53, handle 64 is turned, and hook 57 moves to the other side of limit groove 53. Then handle 64 is slowly released, spring 56 returns to its original position, and spring 56 pushes top plate 58 upward. Top plate 58 then drives hook 57 to engage in limit groove 53, completing the operation. This solution has a simple structure, is convenient for production, and only requires opening top plate 58 when the check valve needs to be adjusted. The insulation core 54 can stably protect valve 1 handle 4, effectively reducing the probability of freezing and facilitating normal use of the equipment. At the same time, this solution does not require electricity, so there is no safety hazard of leakage, making it easy to popularize and use.

Claims

1. A check valve with antifreeze effect, comprising a valve (1), wherein a first connecting end (2) is fixedly connected to the lower end of the valve (1), a second connecting end (3) is fixedly connected to one side of the valve (1), and a handle (4) is rotatably connected to the inner wall of the valve (1), characterized in that: The surface of the valve (1) is provided with a protective device (5), the protective device (5) includes a stabilizing sleeve (51) and a heat insulation core (54). The stabilizing sleeve (51) is fitted onto the valve (1). The surface of the stabilizing sleeve (51) is provided with a placement groove (52). One end of the heat insulation core (54) is inserted into the placement groove (52). The upper end of the heat insulation core (54) is fixedly connected to a top plate (58). The surface of the valve (1) is provided with an auxiliary device (6).

2. A check valve with antifreeze effect according to claim 1, characterized in that: The surface of the stabilizing sleeve (51) is provided with a limiting groove (53), and the surface of the top plate (58) is fixedly connected with a hook (57), one end of the hook (57) being inserted into the limiting groove (53).

3. A check valve with antifreeze effect according to claim 2, characterized in that: The longitudinal section of the hook (57) is L-shaped, and the edges of the hook (57) are rounded.

4. A check valve with antifreeze effect according to claim 1, characterized in that: A spring (56) is fixedly connected to the lower surface of the top plate (58), and a stop plate (55) is fixedly connected to one end of the spring (56). The stop plate (55) is located above the handle (4).

5. A check valve with antifreeze effect according to claim 1, characterized in that: The auxiliary device (6) includes a stop block (61), which is fixedly connected to the surface of the valve (1). A retainer (62) is fixedly connected to the lower surface of the stabilizing sleeve (51), and the retainer (62) is fitted onto the stop block (61).

6. A check valve with antifreeze effect according to claim 1, characterized in that: A handle (64) is fixedly connected to the upper surface of the top plate (58).

7. A check valve with antifreeze effect according to claim 1, characterized in that: A shield (63) is fixedly connected to the side surface of the top plate (58), and an auxiliary groove (65) is provided on the surface of the top plate (58).

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