A diaphragm valve performance testing device

Abstract

The present invention discloses a diaphragm valve performance testing device, which includes a valve core, a connecting flange, a communicating pipe, a control valve and an execution controller. The valve core is connected to the communicating pipe through the connecting flange. The execution controller is connected to the valve core through the control valve. A control box is arranged on one side of the execution controller above the control valve. A control button and a fixing sleeve are arranged between the control box and the execution controller. A fixing plate, an air inflation pump, an air extraction pump and a fixing box are arranged inside the control box. The diaphragm valve performance testing device of the present invention belongs to the technical field of diaphragm valves. By controlling the inflation degree of the inflation airbag through the air inflation pump and the air extraction pump, the telescopic air column can be made to contact the limiting plate, which can avoid the trouble of workers operating the control button. The limiting plate is used for limiting, so as to avoid damage to the keys of the execution controller due to excessive pressing force during frequent pressing, and the connecting column is reset through the telescopic spring.

Description

Technical Field

[0001] The invention relates to the technical field of diaphragm valves, and in particular to a diaphragm valve performance testing device. Background Art

[0002] The diaphragm valve is a stop valve that uses a diaphragm as a start and close part to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is mostly made of plastic, fiberglass, ceramic or metal-lined rubber materials. It has a simple structure, good sealing and corrosion resistance, and low fluid resistance. It is used for low-pressure, low-temperature, highly corrosive media and media containing suspended matter. According to the structural form, it is divided into ridge type, stop type, gate type, etc., and according to the driving mode, it is divided into manual, pneumatic, and electric. Among them, the electric diaphragm valve needs to press the button of the test device when testing. The pulse is a signal that occurs in a short time relative to the continuous signal in the entire signal cycle, so that the test device sends a pulse to determine whether the actuator is working according to the frequency of the pulse. However, the buttons of the existing control box need to be pressed manually. It is troublesome when the buttons are pressed frequently, and the different pressing forces each time will cause damage to the test equipment or button failure. Summary of the invention

[0003] The main purpose of the present invention is to provide a diaphragm valve performance testing device, which can effectively solve the problem that the buttons of the control box in the background technology need to be pressed manually. When the buttons are pressed manually frequently, it is troublesome, and the different pressing forces each time may cause damage to the test equipment or button failure.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A diaphragm valve performance testing device comprises a valve core, a connecting flange, a connecting pipe, a control valve and an execution controller, wherein the valve core is connected to the connecting pipe via a connecting flange, the execution controller is connected to the valve core via a control valve, a control box is arranged above the control valve and on one side of the execution controller, a control button and a fixing sleeve are arranged between the control box and the execution controller, a fixing plate, an air pump, an air pump and a fixing box are arranged inside the control box, an inflatable airbag is arranged inside the fixing box, a telescopic air column is arranged on the inflatable airbag, and a limit plate, a telescopic spring and a connecting column are arranged on one side of the control box.

[0006] As a preferred technical solution, the inflation pump and the vacuum pump are connected to the inflatable airbag inside the fixed box through a connecting pipe, and the telescopic air column is connected to the inflatable airbag, and the telescopic air column runs through the control box and the interior of the fixed box. The expansion degree of the inflatable airbag is controlled by the inflation pump and the vacuum pump, so that the telescopic air column is in contact with the limit plate.

[0007] As a preferred technical solution, the telescopic air column is in contact with the limit plate, and the telescopic air column pushes the limit plate and the connecting column, and the connecting column is slidably connected to the inner wall of the control box, which can avoid the trouble of workers operating the control button, and is limited by the limit plate to prevent the key of the execution controller from being damaged due to frequent pressing with too much force.

[0008] As a preferred technical solution, both ends of the telescopic spring are connected to the limit plate and the inner wall of the control box, and the length of the telescopic spring is the same as the distance between the limit plate and the control box, and the connecting column is reset by the telescopic spring, which is more convenient.

[0009] As a preferred technical solution, the change in length of the telescopic air column after exhausting and inflating is 0 to 10 mm.

[0010] As a preferred technical solution, the fixing plate is welded inside the control box, and the fixing box is welded inside the control box.

[0011] As a preferred technical solution, a toggle rod is provided on the control button, the toggle rod passes through the inside of the fixed sleeve, and the toggle rod is slidably connected to the fixed sleeve.

[0012] As a preferred technical solution, the connecting flange is connected to the communicating pipe by bolts, and one of the communicating pipes is communicated with the storage tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, an inflatable airbag is provided, and the inflation degree of the inflatable airbag is controlled by an air pump and an air extraction pump, so that the telescopic air column is in contact with the limit plate, which can avoid the trouble of workers operating the control button, and is limited by the limit plate to prevent the key of the execution controller from being damaged due to frequent pressing, and the connecting column is reset by the telescopic spring, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall schematic diagram of the present invention;

[0016] Figure 2 is the schematic diagram of the execution controller and the control box of the present invention;

[0017] Figure 3 is Figure 2 the enlarged view of part A of

[0018] Figure 4 is the schematic diagram of the fixing box of the present invention;

[0019] Figure 5 is the schematic diagram of the limit plate and the connecting column of the present invention.

[0020] In the figure: 1, valve core; 2, connecting flange; 3, communicating pipe; 4, control valve; 5, execution controller; 6, control box; 7, control button; 8, fixed sleeve; 9, fixed plate; 10, air inflation pump; 11, air extraction pump; 12, fixed box; 13, air inflation balloon; 14, limit plate; 15, telescopic spring; 16, telescopic air column; 17, connecting column. Specific implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0022] As Figures 1-5 shown, a diaphragm valve performance test device includes a valve core 1, a connecting flange 2, a communicating pipe 3, a control valve 4 and an execution controller 5. The valve core 1 is connected to the communicating pipe 3 through the connecting flange 2, and the execution controller 5 is connected to the valve core 1 through the control valve 4. A control box 6 is arranged on one side above the control valve 4 and on one side of the execution controller 5. A control button 7 and a fixed sleeve 8 are arranged between the control box 6 and the execution controller 5. An inner part of the control box 6 is provided with a fixed plate 9, an air inflation pump 10, an air extraction pump 11 and a fixed box 12. An air inflation balloon 13 is arranged inside the fixed box 12. A telescopic air column 16 is arranged on the air inflation balloon 13. A limit plate 14, a telescopic spring 15 and a connecting column 17 are arranged on one side of the control box 6.

[0023] In this embodiment, the air inflation pump 10 and the air extraction pump 11 are connected to the air inflation balloon 13 inside the fixed box 12 through a connecting pipe, and the telescopic air column 16 is communicated with the air inflation balloon 13. The telescopic air column 16 penetrates through the inner parts of the control box 6 and the fixed box 12. The inflation degree of the air inflation balloon 13 is controlled by the air inflation pump 10 and the air extraction pump 11, so that the telescopic air column 16 contacts the limit plate 14, which can avoid the trouble of workers operating the control button 7.

[0024] In this embodiment, the telescopic air column 16 contacts the limit plate 14, and the telescopic air column 16 pushes the limit plate 14 and the connecting column 17. The connecting column 17 is slidably connected to the inner wall of the control box 6 and is limited by the limit plate 14, so as to avoid damage to the keys of the execution controller 5 due to excessive pressing force during frequent pressing.

[0025] In this embodiment, both ends of the telescopic spring 15 are connected to the limit plate 14 and the inner wall of the control box 6, and the length of the telescopic spring 15 is the same as the distance between the limit plate 14 and the control box 6; the change length of the telescopic air column 16 after exhausting and inflating is 0 to 10 mm, and the connecting column 17 is reset by the telescopic spring 15, which is more convenient.

[0026] In addition, the fixing plate 9 is welded inside the control box 6, and the fixing box 12 is welded inside the control box 6; a toggle rod is provided on the control button 7, the toggle rod penetrates through the inside of the fixing sleeve 8, and the toggle rod is slidably connected to the fixing sleeve 8; the connecting flange 2 is connected to the communicating pipe 3 by bolts, and one of the communicating pipes 3 is communicated with the storage tank.

[0027] It should be noted that the present invention is a diaphragm valve performance testing device. During testing, the valve core 1 and the control valve 4 are connected to the communicating pipe 3 through the connecting flange 2. At this time, the on-off of the communicating pipe 3 can be controlled by the control valve 4. During testing, the air inflation pump 10 and the air extraction pump 11 can be turned on. At this time, the inflatable airbag 13 inside the fixing box 12 can be repeatedly inflated and deflated. At this time, the inflatable airbag 13 expands and contracts in the fixing box 12. The degree of expansion of the inflatable airbag 13 is controlled by the air inflation pump 10 and the air extraction pump 11, so that the telescopic air column 16 of the inflatable airbag 13 is straightened or contracted, and the fixing box 12 restricts the inflatable airbag 13 to prevent the inflatable airbag 13 from being subjected to too much pressure. When the telescopic air column 16 extends, it pushes the limiting plate 14 to move, so that the connecting column 17 slides along the side wall of the control box 6, so that the telescopic air column 16 contacts the limiting plate 14, which can avoid the trouble of workers operating the control button 7. At this time, the connecting column 17 contacts the control button 7, so that the pulse current in the control box 6 controls the operation of the control box 6, and is limited by the limiting plate 14 to prevent the key of the execution controller 5 from being damaged due to frequent pressing with too much pressing force. When the air inflation pump 10 and the air extraction pump 11 repeatedly inflate and deflate, at this time, when the control button 7 is pressed, the connecting column 17 pushes the control button 7, so that the control button 7 controls the disconnection of the pulse current of the control box 6, and the connecting column 17 is reset by the telescopic spring 15 to stop the test. Between two presses of the control button 7, when the pulse current reaches a certain frequency, the control box 6 can control the valve core 1 of the control valve 4 to close or open, so that the communicating pipe 3 is opened and closed. The degree of expansion of the inflatable airbag 13 is controlled by the air inflation pump 10 and the air extraction pump 11, so that the telescopic air column 16 contacts the limiting plate 14, which can avoid the trouble of workers operating the control button 7, and is limited by the limiting plate 14 to prevent the key of the execution controller 5 from being damaged due to frequent pressing with too much pressing force, and the connecting column 17 is reset by the telescopic spring 15, so that the liquid in the storage tank flows out, and the test results can be observed more intuitively.

[0028] Although the illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, as long as they do not violate the idea of the present invention, they should also be regarded as the content disclosed by the present invention. For those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A diaphragm valve performance testing device, comprising a valve core (1), a connecting flange (2), a communicating pipe (3), a control valve (4) and an execution controller (5), wherein the valve core (1) is connected to the communicating pipe (3) through the connecting flange (2), and the execution controller (5) is connected to the valve core (1) through the control valve (4), characterized in that: Above the control valve (4) and on one side of the execution controller (5), a control box (6) is provided. Between the control box (6) and the execution controller (5), a control button (7) and a fixing sleeve (8) are provided. Inside the control box (6), a fixing plate (9), an air inflation pump (10), an air extraction pump (11) and a fixing box (12) are provided. Inside the fixing box (12), an air inflation balloon (13) is provided. On the air inflation balloon (13), a telescopic air column (16) is provided. On one side of the control box (6), a limiting plate (14), a telescopic spring (15) and a connecting column (17) are provided. The air inflation pump (10) and the air extraction pump (11) are connected to the air inflation balloon (13) inside the fixing box (12) through a connecting pipe. The telescopic air column (16) is communicated with the air inflation balloon (13), and the telescopic air column (16) penetrates through the inside of the control box (6) and the fixing box (12). The telescopic air column (16) contacts the limiting plate (14), and the telescopic air column (16) pushes the limiting plate (14) and the connecting column (17), and the connecting column (17) is slidably connected to the inner wall of the control box (6). Both ends of the telescopic spring (15) are connected to the limiting plate (14) and the inner wall of the control box (6). The length of the telescopic spring (15) is the same as the distance between the limiting plate (14) and the control box (6).

2. The performance testing device for a diaphragm valve according to claim 1, wherein: The changed length of the telescopic air column (16) after exhausting and inflating is 0 to 10 mm.

3. The performance testing device for a diaphragm valve according to claim 1, wherein: The fixing plate (9) is welded inside the control box (6), and the fixing box (12) is welded inside the control box (6).

4. A diaphragm valve performance testing device according to claim 1, characterized in that: On the control button (7), a toggle rod is provided. The toggle rod penetrates through the inside of the fixing sleeve (8), and the toggle rod is slidably connected to the fixing sleeve (8).

5. The performance testing device for a diaphragm valve according to claim 1, wherein: The connecting flange (2) is connected to the communicating pipe (3) by bolts.

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