Testing device for pneumatic control valve production

Abstract

The utility model discloses a testing device for pneumatic control valve production, and relates to the technical field of pneumatic control valve testing, the testing device comprises a detection mechanism, a reset mechanism and other parts, the detection mechanism comprises a workbench, an air pump is installed on the upper surface of the workbench, a transparent detection box is installed on one side of the air pump on the upper surface of the workbench, and the reset mechanism is installed on the transparent detection box. According to the detection mechanism of the device, only one detection box is arranged to detect the on-off state of the pneumatic control valve, only one sensor is installed, the production cost of the device is reduced, and due to the fact that electrical components are reduced, the device is not prone to being damaged, and the detection efficiency is improved. The service life of the device is prolonged, a reset mechanism of the device limits a first spring through an extrusion plate, the extrusion plate can be taken down only by rotating a rotary knob to move a clamping piece out of a clamping groove, operation is easy, and a worker can replace the first spring conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic regulating valve testing, in particular to a testing device for producing pneumatic regulating valves. Background Art

[0002] Pneumatic control valve uses compressed gas as power source, cylinder as actuator, and uses valve positioner, converter, solenoid valve, position-holding valve, gas storage tank, gas filter and other accessories to drive the valve, realize switch quantity or proportional regulation, and receive control signals from industrial automation control system to adjust pipeline medium: flow, pressure, temperature, liquid level and other process parameters; the characteristics of pneumatic control valve are simple control, fast response, and inherent safety, and no additional explosion-proof measures are required. Pneumatic control valve needs to be tested during production and processing, and thus requires testing equipment;

[0003] For example, the patent website discloses a test device for the production of pneumatic control valves (publication number: CN216524772U). This device is provided with two detection mechanisms, and thus this device is installed with multiple electrical components such as sensor plates, sensor rods and sensor blocks, which leads to high device costs. At the same time, the large number of electrical components makes the device easy to damage. Therefore, technical personnel in this field have proposed a test device for the production of pneumatic control valves. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a testing device for the production of pneumatic control valves. Only one sensor is arranged in the detection mechanism of the device to solve the problems in the above background.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a test device for production of pneumatic control valves, comprising:

[0006] A detection mechanism, wherein the detection mechanism is used to detect the pneumatic control valve;

[0007] The detection mechanism comprises a workbench, an air pump is installed on the upper surface of the workbench, a transparent detection box is installed on the upper surface of the workbench at one side of the air pump, a first pipe whose end is connected to the transparent detection box is installed at the output end of the air pump, a second pipe whose end is connected to the transparent detection box is installed on the side of the first pipe, a mounting port is installed on the side of the first pipe, a pressure gauge is installed on the side of the first pipe at one side of the mounting port, a one-way valve is installed on the first pipe near the transparent detection box, a first solenoid valve is installed on the second pipe, a movable plate is slidably arranged in the transparent detection box, an extrusion rod is installed at the center of the lower surface of the movable plate, and a pressure sensor is installed on the inner bottom surface of the transparent detection box just below the extrusion rod;

[0008] A reset mechanism is used to reset components inside the detection mechanism.

[0009] As a further technical solution of the utility model, an exhaust pipe is installed on the side of the transparent detection box above the movable plate, and a second solenoid valve is arranged on the exhaust pipe.

[0010] As a further technical solution of the utility model, the reset mechanism includes an extrusion plate arranged directly above the transparent detection box, and two slots are correspondingly opened on the upper surface of the extrusion plate. Each of the slots is provided with an extension rod whose lower end extends into the transparent detection box and is fixedly connected to the movable plate. Each of the extension rods is provided with a first spring between the transparent detection box and the extrusion plate.

[0011] As a further technical solution of the utility model, a cavity is opened in the extrusion plate on one side of the slot, a limit plate is arranged in each cavity, and a second spring is arranged in each cavity on one side of the limit plate.

[0012] As a further technical solution of the utility model, a slot aligned with the cavity is provided on the side of each extension rod, and a clamp extending into the aligned slot is installed at the center of the side of each limit plate.

[0013] As a further technical solution of the utility model, a central groove is opened between the two cavities in the extrusion plate, a winding rod is rotatably installed in each of the central grooves, and a pull rope with an end extending into the central groove and fixedly connected to the winding rod is installed at the center of the side of each of the limit plates, and one end of the winding rod extends to the outside of the extrusion plate and is installed with a knob;

[0014] Beneficial Effects

[0015] The utility model provides a test device for the production of pneumatic control valves. Compared with the prior art, it has the following beneficial effects:

[0016] 1. A test device for the production of pneumatic control valves. The detection mechanism of the device only has one detection box to detect the switch status of the pneumatic control valve, and only one sensor is installed, which reduces the production cost of the device. Since the electrical components are reduced, the device is not easy to be damaged, and the service life of the device is extended.

[0017] 2. A test device for the production of pneumatic control valves. The reset mechanism of this device uses an extrusion plate to limit the first spring. To remove the extrusion plate, you only need to rotate the knob to move the card out of the slot. The operation is simple and convenient for the staff to replace the first spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a test device for the production of pneumatic control valves;

[0019] Figure 2 A cross-sectional view of a test device for producing a pneumatic control valve;

[0020] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0021] Figure 4 A schematic diagram of the structure of a disassembled state of an extrusion plate of a test device for producing a pneumatic control valve;

[0022] Figure 5 A cross-sectional view of an extrusion plate of a test device for producing pneumatic control valves.

[0023] In the figure: 1. workbench; 2. air pump; 3. first pipeline; 4. installation port; 5. pressure gauge; 6. one-way valve; 7. second pipeline; 8. first solenoid valve; 9. transparent detection box; 10. movable plate; 11. extrusion rod; 12. pressure sensor; 13. exhaust pipe; 14. second solenoid valve; 15. extension rod; 16. first spring; 18. extrusion plate; 19. cavity; 20. limit plate; 21. clamp; 22. second spring; 23. center groove; 24. winding rod; 25. pull rope; 26. slot; 27. knob; 28. slot. DETAILED DESCRIPTION

[0024] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0025] Figure 1 It is a structural schematic diagram of a test device for the production of pneumatic control valves;

[0026] Figure 2 A cross-sectional view of a test device for producing a pneumatic control valve;

[0027] Figure 3 for Figure 3 Enlarged view of part A in the middle;

[0028] Figure 4 A schematic diagram of the structure of a disassembled state of an extrusion plate of a test device for producing a pneumatic control valve;

[0029] Figure 5 A cross-sectional view of an extrusion plate of a test device for producing a pneumatic control valve;

[0030] like Figure 1-5 As shown, a pneumatic control valve production testing device disclosed in the present invention may include: a detection mechanism and a reset mechanism and other components,

[0031] like Figure 1-4 As shown, the detection mechanism includes a workbench 1, an air pump 2, a first pipeline 3, a mounting port 4, a pressure gauge 5, a one-way valve 6, a second pipeline 7, a first solenoid valve 8, a transparent detection box 9, a movable plate 10, an extrusion rod 11, a pressure sensor 12, an exhaust pipe 13, and a second solenoid valve 14;

[0032] An air pump 2 is installed on the upper surface of the workbench 1, a transparent detection box 9 is installed on the upper surface of the workbench 1 on one side of the air pump 2, a first pipe 3 whose end is connected to the transparent detection box 9 is installed at the output end of the air pump 2, a second pipe 7 whose end is connected to the transparent detection box 9 is installed on the side of the first pipe 3, a mounting port 4 is installed on the side of the first pipe 3, a pressure gauge 5 is installed on the side of the first pipe 3 on one side of the mounting port 4, a one-way valve 6 is installed on the first pipe 3 near the transparent detection box 9, a first solenoid valve 8 is installed on the second pipe 7, a movable plate 10 is slidably arranged in the transparent detection box 9, an extrusion rod 11 is installed at the center of the lower surface of the movable plate 10, a pressure sensor 12 is installed on the inner bottom surface of the transparent detection box 9 just below the extrusion rod 11, an exhaust pipe 13 is installed on the side of the transparent detection box 9 above the movable plate 10, a second solenoid valve 14 is arranged on the exhaust pipe 13, and a timer is also installed on the side of the transparent detection box 9;

[0033] When in use, install the pneumatic regulating valve at the port of the installation port 4, then close the pneumatic regulating valve, run the air pump 2, and send gas into the first pipe 3 and the second pipe 7. Since the pneumatic regulating valve is closed, the gas will enter the transparent detection box 9 from the second pipe 7 and pass through the pressure gauge 5 on the first pipe 3. If there is gas passing through, it means that the pneumatic regulating valve is leaking. Since the gas continuously enters the transparent detection box 9, the movable plate 10 is pressed down through the pressing rod 11 to press the pressure sensor 12. The pressure sensor 12 is under pressure, and then the air pump 2 can be closed;

[0034] Then, the first electromagnetic valve 8 is closed to open the pneumatic regulating valve, and then the air pump 2 is operated to allow the gas to enter the first pipeline 3 through the pneumatic regulating valve, and finally enter the transparent detection box 9, and squeeze the movable plate 10 to make it descend, and use the squeezing rod 11 to squeeze the pressure sensor 12, and then use the timer measuring device on the transparent detection box 9 to detect the time taken from opening to the pressure sensor 12 being squeezed, and then open the second electromagnetic valve 14 to allow the gas above the movable plate 10 to be discharged through the exhaust pipe 13, and use the reset mechanism to drive the movable plate 10 to restore its position, and then adjust the flow rate of the pneumatic regulating valve, and repeat the above operation for multiple tests to obtain the multiple times, so as to judge whether the adjustment effect of the pneumatic regulating valve is qualified;

[0035] It should be noted that the device uses an external power supply to supply power to the electrical components in the device, and controls their opening and closing through a control switch;

[0036] like Figure 1-4 As shown, it includes an extension rod 15, a first spring 16, an extrusion plate 18, a cavity 19, a limit plate 20, a clamp 21, a second spring 22, a center groove 23, a winding rod 24, a pull rope 25, a clamping groove 26, a knob 27, and a slot 28;

[0037] The extrusion plate 18 is arranged directly above the transparent detection box 9. Two slots 28 are correspondingly provided on the upper surface of the extrusion plate 18. An extension rod 15 is provided in each slot 28, the lower end of which extends into the transparent detection box 9 and is fixedly connected to the movable plate 10. A first spring 16 is sleeved on each extension rod 15 between the transparent detection box 9 and the extrusion plate 18. A cavity 19 is provided on one side of the slot 28 in the extrusion plate 18. A limit plate 20 is provided in each cavity 19. A second spring 22 is provided on one side of the limit plate 20 in each cavity 19. A slot 26 aligned with the cavity 19 is provided on the side of each extension rod 15, and a clamp 21 extending into the aligned slot 26 is installed at the center of the side of each limiting plate 20. A central slot 23 is provided between the two cavities 19 in the extrusion plate 18, and a winding rod 24 is rotatably installed in each central slot 23. A pull rope 25 with an end extending into the central slot 23 and fixedly connected to the winding rod 24 is installed at the center of the side of each limiting plate 20, and one end of the winding rod 24 extends to the outside of the extrusion plate 18 and is installed with a knob 27.

[0038] As the movable plate 10 descends, the extrusion plate 18 is driven to descend through the extension rod 15. The descending extrusion plate 18 compresses the two first springs 16. When the second solenoid valve 14 is opened to allow the gas above the movable plate 10 in the transparent detection box 9 to be discharged through the exhaust pipe 13, the first spring 16 rebounds and drives the movable plate 10 to rise to restore its position, thereby achieving a reset effect.

[0039] When the first spring 16 needs to be replaced, the knob 27 is rotated to drive the winding rod 24 to rotate and wind the two pull ropes 25, thereby pulling the two limit plates 20 closer together. Each moving limit plate 20 compresses the second spring 22 while driving the clamp 21 to move out of the slot 26. The extrusion plate 18 can be removed from the two extension rods 15, the damaged first spring 16 is removed, and a new first spring 16 is re-installed on the extension rod 15. Then, the extrusion plate 18 is reinstalled on the two extension rods 15 and the two clamps 21 are aligned with the two slots 26. Then, the knob 27 is released to allow the two second springs 22 to rebound and drive the two clamps 21 to be inserted into the aligned slots 26. The extrusion plate 18 is re-fixed on the extension rod 15, and the replacement is completed.

[0040] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A test device for the production of pneumatic control valves, characterized in that: include: A detection mechanism, the detection mechanism is used to detect the pneumatic control valve; The detection mechanism comprises a workbench (1), an air pump (2) is installed on the upper surface of the workbench (1), a transparent detection box (9) is installed on the upper surface of the workbench (1) at one side of the air pump (2), a first pipe (3) whose end is connected to the transparent detection box (9) is installed at the output end of the air pump (2), a second pipe (7) whose end is connected to the transparent detection box (9) is installed on the side of the first pipe (3), a mounting port (4) is installed on the side of the first pipe (3), a pressure gauge (5) is installed on the side of the first pipe (3) at one side of the mounting port (4), a one-way valve (6) is installed on the first pipe (3) near the transparent detection box (9), a first solenoid valve (8) is installed on the second pipe (7), a movable plate (10) is slidably arranged in the transparent detection box (9), an extrusion rod (11) is installed at the center of the lower surface of the movable plate (10), and a pressure sensor (12) is installed on the inner bottom surface of the transparent detection box (9) just below the extrusion rod (11); A reset mechanism is used to reset components inside the detection mechanism.

2. A pneumatic control valve production testing device according to claim 1, characterized in that: An exhaust pipe (13) is installed on the side of the transparent detection box (9) above the movable plate (10), and a second electromagnetic valve (14) is arranged on the exhaust pipe (13).

3. A pneumatic control valve production testing device according to claim 1, characterized in that: The reset mechanism comprises a pressing plate (18) arranged directly above the transparent detection box (9), and two slots (28) are correspondingly provided on the upper surface of the pressing plate (18), and each of the slots (28) is provided with an extension rod (15) whose lower end extends into the transparent detection box (9) and is fixedly connected to the movable plate (10), and each of the extension rods (15) is sleeved with a first spring (16) between the transparent detection box (9) and the pressing plate (18).

4. A pneumatic control valve production testing device according to claim 3, characterized in that: A cavity (19) is provided in the extrusion plate (18) on one side of the slot (28), a limit plate (20) is provided in each cavity (19), and a second spring (22) is provided in each cavity (19) on one side of the limit plate (20).

5. A pneumatic control valve production testing device according to claim 4, characterized in that: A slot (26) aligned with the cavity (19) is provided on the side of each extension rod (15), and a clamping member (21) extending into the aligned slot (26) is installed at the center of the side of each limit plate (20).

6. A pneumatic control valve production testing device according to claim 5, characterized in that: A central groove (23) is provided between the two cavities (19) in the extrusion plate (18), a winding rod (24) is rotatably installed in each of the central grooves (23), a pull rope (25) is installed at the center of the side of each of the limiting plates (20), the end of which extends into the central groove (23) and is fixedly connected to the winding rod (24), and one end of the winding rod (24) extends to the outside of the extrusion plate (18) and is installed with a knob (27).

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