Check valve with guiding function

Abstract

The utility model relates to the technical field of check valves, in particular to a check valve with a guiding function, which comprises a valve body, a first flange is fixedly connected to the surface of the valve body, a second flange is fixedly connected to the surface of the valve body, a control device is arranged on the surface of the valve body, and the control device comprises an air pump and a communicating hole. The air pump is located above the valve body, the communicating hole is formed in the upper surface of the valve body, one end of the air pump communicates with the communicating hole, an air guide opening is formed in the surface of the air pump, a sliding cylinder is slidably connected to the inner wall of the valve body, a transverse rod is fixedly connected to the inner wall of the valve body, and a guide rod is fixedly connected to the upper surface of the transverse rod. According to the scheme, the structure is simple, the control operation of the equipment is effectively simplified, the production cost of the equipment is low, mass production is facilitated, meanwhile, the equipment is modularly designed, the equipment is easy to overhaul and operate, the service life of the equipment is effectively prolonged, and normal use of the equipment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, and in particular to a guide check valve. 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 CN216200877U, disclose a guide check valve, belonging to the field of valve technology. It includes a valve body with an inlet and an outlet, a guide mechanism, a fixing ring, and three sets of mounting plates. The fixing ring is fixedly sleeved on the outer surface of the guide rod. Each set of mounting plates has two plates, and a connecting rod is fixedly connected between the outer surfaces of one side of each pair of mounting plates. A buffer mechanism is also included, mounted on the fixing ring. When the valve core opens or closes, it pushes the guide rod to slide inside the guide hole. The fixing ring stably clamps the guide rod, and the three mounting rods rotatably connected to the fixing ring support it. This mutual support of the three mounting rods prevents the guide rod from tilting, improving its guiding safety. Rotating the mounting tube installed on the inner wall of the valve body facilitates the retraction of the mounting rod. The buffer mechanism cushions the valve core, preventing pressure impact and damage, thus improving the valve's operational safety.

[0004] The inventors discovered in their daily work that most check valves currently have complex internal structures, which increases the production cost of the equipment. At the same time, when the equipment malfunctions, it is difficult to perform maintenance operations, which shortens the service life of the equipment and causes a lot of economic losses to users. This is not conducive to the normal use of the equipment, so improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of existing check valves, which have complex internal structures, leading to increased production costs and difficulty in maintenance when malfunctions occur, thus shortening the service life of the equipment, causing significant economic losses to users, and hindering normal equipment use. Therefore, a guide check valve is proposed.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a guide check valve, comprising a valve body, a first flange fixedly connected to the surface of the valve body, a second flange fixedly connected to the surface of the valve body, a control device provided on the surface of the valve body, the control device comprising an air pump and a connecting hole, the air pump being located above the valve body, the connecting hole being located on the upper surface of the valve body, one end of the air pump being connected to the connecting hole, an air guide port being installed on the surface of the air pump, a slide cylinder being slidably connected to the inner wall of the valve body, a crossbar being fixedly connected to the inner wall of the valve body, a guide rod being fixedly connected to the upper surface of the crossbar, one end of the guide rod penetrating the slide cylinder, and an auxiliary device being provided on the surface of the valve body. This solution has a simple structure, effectively simplifies the control operation of the equipment, has low production costs, is easy to mass-produce, and is modularly designed, making it easy to perform maintenance operations, effectively improving the service life of the equipment, and facilitating normal use of the equipment.

[0007] Preferably, the inner wall of the slide is connected to a sealing ring, which is sleeved on the guide rod to reduce the probability of liquid entering the interior of the slide.

[0008] Preferably, a limiting block is fixedly connected to the end of the guide rod away from the crossbar. The limiting block is located inside the slide cylinder. In use, the valve body is connected to the pipeline through the first flange and the second flange. When the valve needs to be closed, the air pump is turned on. The air pump then draws air into the space between the valve body and the slide cylinder through the air inlet. During the gas extraction process, large dust particles are blocked by the protective cover. Then the slide cylinder moves downward, and the spring is deformed by force. After the slide cylinder seals the valve body, the air pump can be turned off.

[0009] Preferably, the crossbar and the guide rod are arranged perpendicularly to stably limit the displacement of the slide cylinder.

[0010] Preferably, the auxiliary device includes a clamp, which is sleeved on the valve body. The air pump is installed on the valve body through the clamp. When the valve is opened, the air pump is turned on to draw air out. The air pump draws the gas out of the slide and valve body components through the connecting hole. Then the slide moves upward and the spring returns to its original position. When the slide moves above the valve body, the valve is opened.

[0011] Preferably, a spring is fixedly connected to the inner bottom wall of the sealing ring, and one end of the spring is fixedly connected to the inner wall of the valve body for auxiliary equipment use.

[0012] Preferably, a protective cover is fitted over the air inlet, and the surface of the protective cover has ventilation holes to effectively prevent large dust particles from entering the valve body through the air pump.

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

[0014] In this invention, during use, the valve body is connected to the pipeline via the first and second flanges. When the valve needs to be closed, the air pump is turned on, and then the air pump draws air into the space between the valve body and the slide cylinder through the air inlet. During the gas extraction process, large dust particles are blocked by the protective cover. Subsequently, the slide cylinder moves downward, and the spring deforms under force. After the slide cylinder seals the valve body, the air pump is turned off. When the valve is opened, the air pump is turned on to extract air. The air pump extracts the gas from the slide cylinder and valve body through the connecting hole. Then, the slide cylinder moves upward, and the spring returns to its original position. When the slide cylinder moves above the valve body, the valve is opened. This solution has a simple structure, effectively simplifying the control operation of the equipment. The equipment has low production costs and is easy to mass-produce. At the same time, the equipment is modularly designed, making it easy to perform maintenance operations, effectively improving the service life of the equipment, and facilitating normal use. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a guide check valve is provided for this utility model;

[0016] Figure 2 A side view of a guide check valve is provided for this utility model.

[0017] Figure 3 This utility model proposes a guide-type check valve. Figure 2 A schematic diagram of the structure at point A;

[0018] Figure 4 An explosive schematic diagram of a guide check valve is provided for this utility model;

[0019] Figure 5 A partial cross-sectional view of a guide check valve is provided for this utility model.

[0020] Figure 6 This utility model proposes a guide-type check valve. Figure 5 A schematic diagram of the structure at point B.

[0021] Legend:

[0022] 1. Valve body; 2. First flange; 3. Second flange; 4. Control device; 41. Air pump; 42. Air inlet; 43. Connecting hole; 44. Slide cylinder; 45. Guide rod; 46. Limiting block; 47. Sealing ring; 48. Crossbar; 5. Auxiliary device; 51. Clamp; 52. Protective cover; 53. Vent hole; 54. Spring. Detailed Implementation

[0023] Please see Figure 1-6This utility model provides a technical solution: a guide check valve, including a valve body 1, a first flange 2 fixedly connected to the surface of the valve body 1, a second flange 3 fixedly connected to the surface of the valve body 1, a control device 4 provided on the surface of the valve body 1, the control device 4 including an air pump 41 and a connecting hole 43, the air pump 41 being located above the valve body 1, the connecting hole 43 being located on the upper surface of the valve body 1, one end of the air pump 41 being connected to the connecting hole 43, an air inlet 42 being installed on the surface of the air pump 41, a slide cylinder 44 being slidably connected to the inner wall of the valve body 1, a crossbar 48 being fixedly connected to the inner wall of the valve body 1, a guide rod 45 being fixedly connected to the upper surface of the crossbar 48, one end of the guide rod 45 penetrating the slide cylinder 44, and an auxiliary device 5 being provided on the surface of the valve body 1. This solution has a simple structure, effectively simplifies the control operation of the equipment, has low production costs, is easy to put into mass production, and the equipment is modularly designed, making it easy to perform maintenance operations, effectively improving the service life of the equipment, and facilitating normal use of the equipment.

[0024] In this embodiment, a sealing ring 47 is connected to the inner wall of the slide 44. The sealing ring 47 is sleeved on the guide rod 45 to reduce the probability of liquid entering the interior of the slide 44.

[0025] Specifically, a limit block 46 is fixedly connected to the end of the guide rod 45 away from the crossbar 48. The limit block 46 is located inside the slide cylinder 44. In use, the valve body 1 is connected to the pipeline through the first flange 2 and the second flange 3. When the valve needs to be closed, the air pump 41 is turned on. Then the air pump 41 draws air into the space between the valve body 1 and the slide cylinder 44 through the air inlet 42. During the gas extraction process, large dust particles are blocked by the protective cover 52. Then the slide cylinder 44 moves downward and the spring 54 is deformed by force. After the slide cylinder 44 seals the valve body 1, the air pump 41 can be turned off.

[0026] Specifically, the crossbar 48 and the guide rod 45 are set vertically to stably limit the displacement of the slide cylinder 44.

[0027] In this embodiment: the auxiliary device 5 includes a clamp 51, which is sleeved on the valve body 1. The air pump 41 is installed on the valve body 1 through the clamp 51. When the valve is opened, the air pump 41 is turned on to draw air. The air pump 41 draws the gas from the slide cylinder 44 and the valve body 1 through the connecting hole 43. Then the slide cylinder 44 moves upward and the spring 54 returns to its original position. When the slide cylinder 44 moves above the valve body 1, the valve is opened.

[0028] Specifically, a spring 54 is fixedly connected to the inner bottom wall of the sealing ring 47, and one end of the spring 54 is fixedly connected to the inner wall of the valve body 1 for auxiliary equipment use.

[0029] Specifically, a protective cover 52 is fitted onto the air inlet 42, and the surface of the protective cover 52 has ventilation holes 53 to effectively prevent large dust particles from entering the valve body 1 through the air pump 41.

[0030] Working Principle: In use, the valve body 1 is connected to the pipeline via the first flange 2 and the second flange 3. When the valve needs to be closed, the air pump 41 is turned on. The air pump 41 then draws air into the space between the valve body 1 and the slide cylinder 44 through the air inlet 42. During the gas extraction process, large dust particles are blocked by the protective cover 52. Then the slide cylinder 44 moves downward, and the spring 54 deforms under force. After the slide cylinder 44 seals the valve body 1, the air pump 41 is turned off. When the valve is opened, the air pump 41 is turned on to extract air. The air pump 41 extracts the gas between the slide cylinder 44 and the valve body 1 through the connecting hole 43. Then the slide cylinder 44 moves upward, and the spring 54 returns to its original position. When the slide cylinder 44 moves above the valve body 1, the valve is opened. This solution has a simple structure, effectively simplifying the control operation of the equipment. The production cost of the equipment is low, making it easy to invest in mass production. At the same time, the equipment is modularly designed, making it easy to perform maintenance operations, effectively improving the service life of the equipment, and facilitating normal use.

Claims

1. A guide check valve, comprising a valve body (1), wherein a first flange (2) is fixedly connected to the surface of the valve body (1), and a second flange (3) is fixedly connected to the surface of the valve body (1), characterized in that: The valve body (1) is provided with a control device (4), which includes an air pump (41) and a connecting hole (43). The air pump (41) is located above the valve body (1), and the connecting hole (43) is located on the upper surface of the valve body (1). One end of the air pump (41) is connected to the connecting hole (43). An air guide port (42) is installed on the surface of the air pump (41). A slide cylinder (44) is slidably connected to the inner wall of the valve body (1). A crossbar (48) is fixedly connected to the inner wall of the valve body (1). A guide rod (45) is fixedly connected to the upper surface of the crossbar (48). One end of the guide rod (45) passes through the slide cylinder (44). An auxiliary device (5) is provided on the surface of the valve body (1).

2. A guide-operated check valve according to claim 1, characterized in that: The inner wall of the slide (44) is connected to a sealing ring (47), which is sleeved on the guide rod (45).

3. A guide check valve according to claim 1, characterized in that: The guide rod (45) is fixedly connected to a limiting block (46) at one end away from the crossbar (48), and the limiting block (46) is located inside the slide cylinder (44).

4. A guide-operated check valve according to claim 1, characterized in that: The crossbar (48) and the guide bar (45) are arranged perpendicularly.

5. A guide check valve according to claim 1, characterized in that: The auxiliary device (5) includes a clamp (51), which is fitted onto the valve body (1), and the air pump (41) is installed on the valve body (1) through the clamp (51).

6. A guide-operated check valve according to claim 2, characterized in that: A spring (54) is fixedly connected to the inner bottom wall of the sealing ring (47), and one end of the spring (54) is fixedly connected to the inner wall of the valve body (1).

7. A guide-operated check valve according to claim 1, characterized in that: A protective cover (52) is fitted on the air inlet (42), and the surface of the protective cover (52) is provided with air vents (53).

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