Flow switch starting and stopping component

Abstract

The utility model discloses a flow switch starting and stopping component which comprises a valve body, a switch assembly arranged in the valve body and used for a flow switch and a starting and stopping assembly used for starting and stopping in the opening and closing process, and an adjusting assembly used for starting and stopping pressure in the starting and stopping process is arranged on the valve body. The switch assembly comprises a piston cylinder fixed to the valve body. When the flow switch starting and stopping component and the piston type flow switch are used, the adjusting assembly and the guiding assembly are matched with each other, the push plate moves in the piston cylinder, the distance between the push plate and the plugging piston is adjusted in the moving process of the push plate, the compression amount of the spring is changed by adjusting the distance, and therefore the piston type flow switch can be started and stopped. According to the piston type flow switch, the spring is arranged, so that the spring extrudes and pushes the plugging piston with different elastic forces, further, when the valve body is used, the valve body can be started and stopped under the action of different fluid pressures, and flexible operation and use of the piston type flow switch are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of flow switches, and in particular relates to a start-stop component of a flow switch. Background Art

[0002] There are three main types of flow switches: thermal conductivity flow switches, baffle flow switches and piston flow switches. During the operation of the piston flow switch, the free-floating blocking piston responds to the flow in the pipeline. When the flow increases or decreases, the movement of the blocking piston will activate the sealed reed switch and trigger the specified action. The blocking piston of the piston flow switch during operation is provided by a spring, and the extrusion force during the operation is relatively fixed, which makes the piston flow switch inconvenient to start and stop operations under different fluid pressure conditions, affecting the flexible operation and use of the piston flow switch.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] A flow switch start-stop component, comprising a valve body, a switch assembly for flow switch arranged inside the valve body and a start-stop assembly for starting and stopping during the switching process, wherein the valve body is provided with a regulating assembly for starting and stopping pressure during the start-stop process;

[0006] The switch assembly includes a piston cylinder fixed on the valve body, the front end and one side of the piston cylinder are respectively provided with a first through hole and a second through hole, the interior of the piston cylinder is slidably connected with a blocking piston for blocking the first through hole and the second through hole, and the piston cylinder is provided with an elastic extrusion assembly for elastically extruding the blocking piston.

[0007] The start-stop assembly includes a magnetic block fixed to one end of the blocking piston, a control box is fixed to the outside of the piston cylinder, and a first conductive sheet and a second conductive sheet are arranged inside the control box.

[0008] The second conductive sheet is elastic and moves toward the first conductive sheet in a closing manner during the movement of the magnetic block.

[0009] The elastic extrusion assembly comprises a push plate slidably connected to the inside of the piston cylinder, and a spring for resisting and pushing the blocking piston is arranged between the push plate and the magnetic block.

[0010] The adjustment assembly includes a threaded tube rotatably connected to the end of the piston cylinder, a threaded rod is threadedly engaged on the threaded tube, one end of the threaded rod is fixed to the push plate, a driving pin is fixed to one end of the threaded tube, and a guide assembly is provided inside the piston cylinder for guiding during the adjustment process.

[0011] The guide assembly comprises two sets of sleeves fixed inside the piston cylinder, the two sets of sleeves are located on both sides of the threaded tube, a sliding rod is slidably connected to the sleeve, and one end of the sliding rod is fixed to the push plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The flow switch start-stop component of the utility model, during the use of the piston flow switch, the push plate is moved inside the piston cylinder through the cooperation of the adjustment component and the guide component. During the movement of the push plate, the distance between the push plate and the blocking piston is adjusted. By adjusting the distance, the compression amount of the spring is changed, so that the spring squeezes and pushes the blocking piston with different elastic forces. Further, when the valve body is in use, the valve body can be started and stopped under the action of different fluid pressures, which is convenient for the flexible operation and use of the piston flow switch.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the switch component, the start-stop component and the adjustment component of the utility model.

[0018] In the figure: 1-valve body; 201-piston cylinder; 202-first through hole; 203-second through hole; 204-blocking piston; 301-magnetic block; 302-control box; 303-first conductive sheet; 304-second conductive sheet; 401-push plate; 402-spring; 501-threaded tube; 502-threaded rod; 503-driving pin; 601-sleeve; 602-slide rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0020] like Figure 1 to Figure 2 As shown, a flow switch start-stop component includes a valve body 1, and also includes a switch component for flow switch arranged inside the valve body 1 and a start-stop component for starting and stopping during the switching process. The valve body 1 is provided with a regulating component for starting and stopping pressure during the start-stop process;

[0021] The switch assembly includes a piston cylinder 201 fixed on the valve body 1, and a first through hole 202 and a second through hole 203 are respectively opened at the front end and one side of the piston cylinder 201. A blocking piston 204 for blocking the first through hole 202 and the second through hole 203 is slidably connected inside the piston cylinder 201, and an elastic extrusion assembly for elastically extruding the blocking piston 204 is provided on the piston cylinder 201;

[0022] During the use of the piston flow switch, the push plate 401 is moved inside the piston cylinder 201 through the cooperation between the adjustment component and the guide component. During the movement of the push plate 401, the distance between the push plate 401 and the blocking piston 204 is adjusted. By adjusting the distance, the compression amount of the spring 402 is changed, so that the spring 402 squeezes and pushes the blocking piston 204 with different elastic forces. Further, when the valve body 1 is in use, the valve body 1 can be started and stopped under different fluid pressures, which facilitates the flexible operation and use of the piston flow switch.

[0023] The start-stop assembly includes a magnetic block 301 fixed to one end of the blocking piston 204, a control box 302 is fixed to the outside of the piston cylinder 201, and a first conductive sheet 303 and a second conductive sheet 304 are arranged inside the control box 302; the second conductive sheet 304 is elastic and moves toward the first conductive sheet 303 for closing during the movement of the magnetic block 301; in the process of opening the valve body 1 by the movement of the blocking piston 204, the magnetic block 301 is driven to move with the movement of the blocking piston 204, and in the process of the movement of the magnetic block 301, the second conductive sheet 304 moves toward the magnetic block 301 with the displacement of the magnetic block 301 and the magnetic attraction between the magnetic block 301 and the second conductive sheet 304, and in the process of the movement, the second conductive sheet 304 is abutted against the first conductive sheet 303, and the circuit between the second conductive sheet 304 and the first conductive sheet 303 is connected, triggering the specified action;

[0024] It should be noted that a power source is disposed inside the control box 302 , and the power source is electrically connected to the second conductive sheet 304 and the first conductive sheet 303 .

[0025] The elastic extrusion component includes a push plate 401 slidably connected to the inside of the piston cylinder 201, and a spring 402 is arranged between the push plate 401 and the magnetic block 301 for pushing the blocking piston 204 against each other; the spring 402 on the push plate 401 facilitates the squeezing and pushing of the blocking piston 204 on the magnetic block 301.

[0026] The adjusting component includes a threaded tube 501 rotatably connected to the end of the piston cylinder 201, a threaded rod 502 is threadedly engaged with the threaded tube 501, one end of the threaded rod 502 is fixed to the push plate 401, a driving pin 503 is fixed to one end of the threaded tube 501, and a guide component for guiding during the adjustment process is arranged inside the piston cylinder 201; the guiding component includes two groups of sleeves 601 fixed inside the piston cylinder 201, the two groups of sleeves 601 are located on both sides of the threaded tube 501, a sliding rod 602 is slidably connected to the sleeve 601, and one end of the sliding rod 602 is fixed to the push plate 401; the threaded tube 501 is driven to rotate by the driving pin 503, and during the rotation of the threaded tube 501, the push plate 401 after being subjected to force moves inside the piston cylinder 201 through the mutual meshing transmission between the threaded tube 501 and the threaded rod 502 and the sliding guiding effect of the sleeve 601 and the sliding rod 602.

[0027] During the use of the piston-type flow switch, the front and rear ends of the valve body 1 are installed and connected with the corresponding pipelines. After the connection is completed, when the piston-type flow switch is in the closed state, the elastic extrusion component is used to push the blocking piston 204 to block the first through hole 202 and the second through hole 203, and the fluid inside the valve body 1 cannot flow. When the piston-type flow switch is in the open state, the pressure of the circulating fluid inside the valve body 1 and the front end of the blocking piston 204 pushes the blocking piston 204 to move inside the piston cylinder 201. Through the movement of the blocking piston 204, the blocking piston 204 no longer blocks the first through hole 202 and the second through hole 203. At this time, the fluid inside the valve body 1 passes through the first through hole 202 and the second through hole 203 to open and circulate;

[0028] In the process of opening the valve body 1 by the movement of the blocking piston 204, the movement of the blocking piston 204 drives the magnetic block 301 to move. In the process of the movement of the magnetic block 301, the displacement of the magnetic block 301 and the magnetic attraction between the magnetic block 301 and the second conductive sheet 304 cause the second conductive sheet 304 to move toward the magnetic block 301. In the process of movement, the second conductive sheet 304 abuts against the first conductive sheet 303, connecting the circuit between the second conductive sheet 304 and the first conductive sheet 303, triggering the specified action, and completing the use of the piston type flow switch;

[0029] During the use of the piston flow switch, the push plate 401 is moved inside the piston cylinder 201 through the cooperation of the adjustment component and the guide component. During the movement of the push plate 401, the distance between the push plate 401 and the blocking piston 204 is adjusted. By adjusting the distance, the compression amount of the spring 402 is changed, so that the spring 402 squeezes and pushes the blocking piston 204 with different elastic forces. Further, when the valve body 1 is in use, the valve body 1 can be started and stopped under different fluid pressures, which facilitates the flexible operation of the piston flow switch.

Claims

1. A flow switch start-stop component, comprising: Valve body (1); It is characterized by further comprising: A switch component for flow switch and a start-stop component for starting and stopping during the switching process are arranged inside the valve body (1), and a regulating component for starting and stopping pressure during the starting and stopping process is arranged on the valve body (1); The switch assembly comprises a piston cylinder (201) fixed on the valve body (1), a first through hole (202) and a second through hole (203) are respectively provided at the front end and one side of the piston cylinder (201), a blocking piston (204) for blocking the first through hole (202) and the second through hole (203) is slidably connected inside the piston cylinder (201), and an elastic squeezing assembly for elastically squeezing the blocking piston (204) is provided on the piston cylinder (201).

2. A flow switch start-stop component according to claim 1, characterized in that: The start-stop assembly comprises a magnetic block (301) fixed to one end of a blocking piston (204); a control box (302) is fixed to the outside of the piston cylinder (201); and a first conductive sheet (303) and a second conductive sheet (304) are arranged inside the control box (302).

3. A flow switch start-stop component according to claim 2, characterized in that: The second conductive sheet (304) is elastic and moves toward the first conductive sheet (303) in a closing manner during the movement of the magnetic block (301).

4. A flow switch start-stop component according to claim 3, characterized in that: The elastic extrusion assembly comprises a push plate (401) slidably connected to the interior of the piston cylinder (201), and a spring (402) for pushing the blocking piston (204) against each other is arranged between the push plate (401) and the magnetic block (301).

5. A flow switch start-stop component according to claim 4, characterized in that: The adjustment component comprises a threaded tube (501) rotatably connected to the end of the piston cylinder (201); a threaded rod (502) is threadedly engaged with the threaded tube (501); one end of the threaded rod (502) is fixed to the push plate (401); a driving pin (503) is fixed to one end of the threaded tube (501); and a guide component for guiding during the adjustment process is arranged inside the piston cylinder (201).

6. A flow switch start-stop component according to claim 5, characterized in that: The guide assembly includes two groups of sleeves (601) fixed inside the piston cylinder (201), the two groups of sleeves (601) are located on both sides of the threaded tube (501), and a sliding rod (602) is slidably connected to the sleeve (601), and one end of the sliding rod (602) is fixed to the push plate (401).

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