Electromagnetic valve sealing performance detection device and operation method

Abstract

The invention discloses a solenoid valve sealing performance detection device and an operation method, the solenoid valve sealing performance detection device comprises a rack, a mounting support, a detection assembly, an inflation air pump and a controller, and the rack is provided with a workbench; the mounting bracket is fixedly mounted on the workbench; the detection assembly comprises an upper detection mechanism and a lower detection mechanism, the upper detection mechanism comprises a sealing cover, the sealing cover is installed on the installation support, the lower detection mechanism comprises a fixed base, and the fixed base is installed on the workbench; the inflation air pump is installed on the machine frame and arranged below the working table. A connecting flange extending outwards is arranged at the bottom of the fixed base, the inflation air pump is suitable for being connected with the connecting flange, and a pressure sensor is arranged in the connecting flange; the device can improve the stability of pressure loading, has a dynamic simulation function, and achieves the more accurate and efficient detection of the sealing performance of the solenoid valve.

Description

Technical Field

[0001] The invention relates to a solenoid valve sealing detection device and an operating method, belonging to the technical field of solenoid valve equipment. Background Art

[0002] The solenoid valve is an industrial equipment controlled by electromagnetics and is an automated basic component used to control fluids. Therefore, the sealing of the solenoid valve plays a vital role in the implementation of the project. At present, the solenoid valve sealing detection mostly adopts the traditional immersion bubble observation method or static pressure difference method. The immersion method requires manual visual observation of bubble escape, which is easily affected by water quality, light and operator experience, has a high missed detection rate, and needs to be dried after detection, which is inefficient. After searching, it was found that the Chinese patent with announcement number CN220084281U discloses a solenoid valve sealing detection device. In this patent, a barometer is provided at the outlet end of the solenoid valve, a connecting pipe is provided at the inlet end of the solenoid valve, and an inflatable sleeve is provided at the middle of the upper end of the connecting pipe. The inflatable sleeve is pushed by a cylinder, so that the inflatable sleeve and the connecting pipe are sealed and connected, and then the high-pressure gas is filled into the solenoid valve through the inflatable sleeve by a high-pressure air pump. The operator judges whether it is qualified according to the display value of the barometer, thereby realizing the sealing detection of the solenoid valve. Although this patent can perform quantitative analysis, the pressure loading stability is poor, making it difficult to capture tiny leaks, and it lacks dynamic simulation capabilities. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a solenoid valve sealing detection device and an operating method, which can improve the stability of pressure loading and have a dynamic simulation function, thereby achieving more accurate and efficient solenoid valve sealing detection.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a solenoid valve sealing detection device, comprising: A frame, wherein a workbench is provided on the frame; A mounting bracket, the mounting bracket is fixedly mounted on the workbench; A detection assembly, the detection assembly comprising an upper detection mechanism and a lower detection mechanism, the upper detection mechanism comprising a sealing cover, the sealing cover being mounted on the mounting bracket, the lower detection mechanism comprising a fixed base, the fixed base being mounted on the workbench; An air pump, which is mounted on the frame and arranged below the workbench; The bottom of the fixed base is provided with a connecting flange extending outwards, the air pump is suitable for connecting with the connecting flange, and the connecting flange is provided with a pressure sensor; One end of the solenoid valve to be tested is suitable for being installed on the fixed base, the sealing cover is suitable for moving downward to seal against the other end of the solenoid valve, and when the solenoid valve is installed in place, the inflation air pump is suitable for filling gas into the interior of the solenoid valve; A controller, wherein the controller is provided with a display screen, the pressure sensor transmits pressure data to the controller via a WIFI module or a Bluetooth module, and after the pressure sensor is connected to the network and powered on for P time, it sends N pressure data to the controller at intervals of Q time; wherein P and N are set values, and Q is a random value of 0-5 seconds, and the controller is suitable for receiving N data sent by the pressure sensor and recording and analyzing them.

[0005] Furthermore, in order to improve the convenience of operation, the detection component also includes a driving mechanism, which includes a driving bracket and a driving motor. The driving bracket is slidably fitted on the mounting bracket, the driving motor is mounted on the driving bracket, and the movable end of the driving motor is connected to the sealing cover.

[0006] Furthermore, in order to improve the stability of the sealing cover during movement, the driving mechanism also includes an adjustment plate and at least one guide column, the guide column is installed on the adjustment plate, and the driving bracket is provided with a guide hole suitable for the guide column to pass through, and the guide column is suitable for moving in the guide hole.

[0007] Furthermore, in order to prevent the adjustment plate from falling off, a limiting piece is provided at the end of the guide column facing the drive motor.

[0008] Furthermore, in order to reduce friction and wear, extend the service life of the device, and achieve rapid and accurate position adjustment, the driving bracket is slidably mounted on the mounting bracket via at least one guide rail slider pair; wherein, The guide rail slider pair comprises: a guide rail mounted on the mounting bracket; A sliding block is mounted on the driving bracket.

[0009] Furthermore, the detection component includes a driving cylinder, the driving cylinder is mounted on the mounting bracket, and the movable end of the driving cylinder is connected to the driving bracket.

[0010] Furthermore, in order to strengthen the fixation of the solenoid valve, the lower detection mechanism also includes a clamp seat and at least one clamping bolt, the clamp seat is installed on the fixed base, and the clamping bolt is installed on the clamp seat. When the valve base of the solenoid valve is installed on the fixed base, the clamping bolt is screwed to make the clamping bolt move and abut the valve base of the solenoid valve.

[0011] Furthermore, in order to improve the sealing performance when filling with gas, the inflation air pump is suitable for being connected to the connecting flange via a connecting pipe, and a sealing ring is provided between the connecting pipe and the connecting flange.

[0012] The present invention also provides an operating method of a solenoid valve sealing detection device, the method comprising the following steps: S1. Equipment pre-check: Start the controller to perform system self-check, confirm that the air pump, pressure sensor and drive mechanism are operating normally, and set the pressure fluctuation threshold range; S2. Workpiece clamping: vertically install the solenoid valve to be tested on a fixed base, fix the valve base with the clamping bolts, and ensure that the connecting flange is airtightly connected to the bottom of the solenoid valve; S3, sealing and pressurizing: the driving cylinder pushes the sealing cover downward, so that both ends of the solenoid valve are in a closed state, and the air pump fills gas into the solenoid valve; S4, dynamic monitoring: the pressure sensor starts data transmission after being powered on for P seconds, and continuously sends N groups of pressure values ​​at random intervals Q; S5, leakage analysis: after receiving N groups of pressure values, the controller performs data analysis. If the pressure value data is less than the minimum value of the pressure valve set by the solenoid valve for N / 5 consecutive times, the solenoid valve is judged to be unqualified, and the rest are qualified; S6. Safe disassembly: After the test is completed, the sealing cover rises first, and after the residual gas is slowly released, the valve base is removed by clamping bolts to complete the test of the solenoid valve.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects: 1. In the present invention, the sealing cover is driven by the driving mechanism, and the two ends of the solenoid valve are effectively sealed and stably pressure-loaded in cooperation with the air pump, thereby improving the accuracy and repeatability of the detection; By installing a pressure sensor in the connecting flange, the sealing performance of the solenoid valve under pressure can be detected in real time. When used in conjunction with the controller, the pressure data of the solenoid valve can be continuously monitored and analyzed to accurately determine whether the solenoid valve is a qualified product, thereby improving detection efficiency and accuracy.

[0014] 2. In the present invention, the design of the guide column and the guide rail slider pair reduces the friction and wear generated by the sealing cover when it moves up and down, effectively extending the service life of the device; by adding a sealing ring between the connecting pipe and the connecting flange, the air tightness during the inflation process is ensured, gas leakage is prevented, and the accuracy of the detection is guaranteed; the design of the clamp seat and the clamping bolt strengthens the fixation of the solenoid valve, preventing the solenoid valve from falling off or tilting during the test, thereby affecting the result of the entire test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a three-dimensional diagram of a solenoid valve sealing detection device of the present invention; Figure 2 It is a front view of a solenoid valve sealing detection device of the present invention; Figure 3 It is a left side view of a solenoid valve sealing detection device of the present invention; Figure 4 A top view of a solenoid valve sealing detection device of the present invention; Figure 5 It is a structural schematic diagram of the detection component of the present invention; Figure 6 This is a schematic diagram of the structure of the solenoid valve used for detection in the present invention. DETAILED DESCRIPTION

[0016] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings. Example

[0017] like Figure 1-6 As shown, a solenoid valve sealing detection device comprises: A frame 1, on which a workbench 11 is provided; Mounting bracket 2, the mounting bracket 2 is fixedly mounted on the workbench 11; A detection assembly, the detection assembly includes an upper detection mechanism and a lower detection mechanism, the upper detection mechanism includes a sealing cover 31, the sealing cover 31 is mounted on the mounting bracket 2, and the lower detection mechanism includes a fixed base 32, and the fixed base 32 is mounted on the workbench 11; An air pump 4 is installed on the frame 1 and arranged below the workbench 11; A connecting flange 321 extending outward is provided at the bottom of the fixed base 32, and the air pump 4 is suitable for connecting to the connecting flange 321, and a pressure sensor is provided in the connecting flange 321; One end of the electromagnetic valve 5 to be tested is suitable for being installed on the fixed base 32, and the sealing cover 31 is suitable for moving downward to seal against the other end of the electromagnetic valve 5. When the electromagnetic valve 5 is installed in place, the air pump 4 is suitable for filling gas into the electromagnetic valve 5; Controller 6, controller 6 is provided with a display screen 61, the pressure sensor transmits pressure data to the controller 6 via a WIFI module or a Bluetooth module, after the pressure sensor is connected to the network and powered on for P time, it sends N pressure data to the controller 6 at intervals of Q time; wherein P and N are set values, Q is a random value of 0-5 seconds, and the controller 6 is suitable for receiving N data sent by the pressure sensor and recording and analyzing them.

[0018] In this embodiment, the controller 6 can be an MCU, and the power-on time P of the pressure sensor connected to the network is 10 seconds. The P time is specifically when the solenoid valve 5 is installed in place and the sealing cover 31 accurately abuts against the upper end of the solenoid valve 5, the equipment is started, and the air pump 4 starts to fill the solenoid valve 5 with gas. Within 10 seconds, the solenoid valve 5 is filled with gas by the air pump 4. During the 10 seconds of inflation, the pressure sensor is also in a working state. If the solenoid valve 5 is leaking and damaged during the inflation process, the operator can select the solenoid valve 5 with poor sealing performance in the early stage through the value change of the pressure sensor; In this embodiment, N is 10. The pressure sensor sends pressure data to the controller 6 once at Q time after P (10 seconds), and sends it 10 times in total. Q is a random value of 0-5 seconds in order to obtain the dynamic pressure data inside the solenoid valve 5. The pressure fluctuations in actual use are simulated through random intervals to improve the reliability of the detection results, so as to better evaluate the solenoid valve 5.

[0019] Specifically, Figure 1-5 As shown, the detection component also includes a driving mechanism, which includes a driving bracket 331 and a driving motor 332. The driving bracket 331 is slidably mounted on the mounting bracket 2, and the driving motor 332 is mounted on the driving bracket 331. The movable end of the driving motor 332 is connected to the sealing cover 31.

[0020] Specifically, Figure 1-5 As shown, the driving mechanism also includes an adjustment plate 333 and at least one guide column 334. The guide column 334 is installed on the adjustment plate 333. The driving bracket 331 is provided with a guide hole 331A suitable for the guide column 334 to pass through. The guide column 334 is suitable for moving in the guide hole 331A.

[0021] In this embodiment, the guide post 334 is used to ensure the vertical movement of the adjustment plate 333, maintain its stability, and prevent it from swinging or tilting during the movement.

[0022] Specifically, Figure 4 As shown, a stopper 334A is provided at the end of the guide column 334 facing the driving motor 332 .

[0023] In this embodiment, the limiting member 334A is used to prevent the adjustment plate 333 from excessively moving and falling off. A buffer spring is also sleeved on the guide column 334 , and one end of the buffer spring is mounted on the adjustment plate 333 .

[0024] Specifically, Figure 2-3 As shown, the driving bracket 331 is slidably mounted on the mounting bracket 2 via at least one guide rail slider pair; wherein, The guide rail slider pair includes: A guide rail 71 mounted on the mounting bracket 2; The slider 72 is mounted on the driving bracket 331 .

[0025] Specifically, Figure 1-3 As shown, the detection component includes a driving cylinder 34 , which is mounted on the mounting bracket 2 , and a movable end of the driving cylinder 34 is connected to the driving bracket 331 .

[0026] Specifically, Figure 1-5 As shown, the lower detection mechanism also includes a clamp seat 351 and at least one clamping bolt 352. The clamp seat 351 is installed on the fixed base 32, and the clamping bolt 352 is installed on the clamp seat 351. When the valve base of the solenoid valve 5 is installed on the fixed base 32, the clamping bolt 352 is screwed to make the clamping bolt 352 move and abut the valve base of the solenoid valve 5.

[0027] In this embodiment, the fixed base 32 is a cylindrical structure. Figure 5 The valve base of the solenoid valve 5 used for detection of the device is a circular hole structure adapted to the fixed base 32; When installing the solenoid valve 5 , align the valve base of the solenoid valve 5 with the fixed base 32 so that the valve base of the solenoid valve 5 is stuck on the fixed base 32 . At this time, tighten the clamping bolt 352 to clamp the solenoid valve 5 to complete the installation between the solenoid valve 5 and the fixed base 32 .

[0028] Of course, different specifications of the solenoid valves 5 can be tested by replacing the fixed base 32 with different diameters according to the use requirements of the product.

[0029] In this embodiment, the driving cylinder 34 drives the driving bracket 331 to move, and the height of the driving bracket 331 is adjusted to better adapt to the solenoid valve 5 to be tested. After the driving bracket 331 moves into place, the driving motor 332 drives the adjustment plate 333 and the sealing cover 31 to move downward. The side of the adjustment plate 333 facing the fixed base 32 is also provided with a sealing ring. When the adjustment plate 333 abuts against the clamp seat 352 and the sealing cover 31 abuts against the upper end of the solenoid valve 4, due to the force generated by the connection between the movable end of the driving motor 332 and the sealing cover 31, the sealing cover 31 can be well abutted against the upper end of the solenoid valve 5. Due to the cooperation of the guide column 334 and the guide hole 331A, the adjustment plate 333 can be steadily pressed down in the vertical direction. At the same time, the buffer spring can absorb the excess pressure applied by the driving motor 332 to avoid the sealing cover 31 from causing a rigid impact on the upper end surface of the solenoid valve 5. When the sealing ring of the adjustment plate 333 fits tightly with the clamp seat 351, a closed air chamber can be formed around the solenoid valve 5, which cooperates with the sealing cover 31 to seal the top of the valve body, effectively isolating external environmental interference, so that the pressure sensor can accurately collect subsequent dynamic pressure data at random intervals inside the solenoid valve. Specifically, Figure 1-4 As shown, the inflation air pump 4 is suitable for being connected to the connecting flange 321 through a connecting pipe 41 , and a sealing ring is provided between the connecting pipe 41 and the connecting flange 321 . Example

[0030] This embodiment introduces an operating method of the electromagnetic valve sealing detection device of embodiment 1, and the operating method includes the following steps: S1, equipment pre-check: start the controller 6 to perform system self-check, confirm that the air pump 4, the pressure sensor and the driving mechanism are operating normally, and set the pressure fluctuation threshold range; S2. Workpiece clamping: vertically install the solenoid valve 5 to be tested on the fixed base 32, fix the valve base by the clamping bolts 352, and ensure that the connecting flange 321 is airtightly connected to the bottom end of the solenoid valve 5; S3, sealing and pressurizing: driving the cylinder 34 to push the sealing cover 31 downward, so that both ends of the solenoid valve 5 are in a closed state, and the air pump 4 fills gas into the solenoid valve 5; S4, dynamic monitoring: the pressure sensor starts data transmission after being powered on for P seconds, and continuously sends N groups of pressure values ​​at random intervals Q; S5, leakage analysis: after receiving N groups of pressure values, the controller 6 performs data analysis. When the pressure value data is less than the minimum value of the pressure valve value set by the solenoid valve 5 for N / 5 consecutive times, the solenoid valve 5 is judged to be unqualified, and otherwise it is qualified. In this embodiment, N is a multiple of 5; S6. Safe disassembly: After the detection is completed, the sealing cover 31 rises first, and after the residual gas is slowly released, the valve base is disassembled by the clamping bolts 352 to complete the detection of the solenoid valve 5.

[0031] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve sealing detection device, characterized in that: include: A frame (1), wherein a workbench (11) is provided on the frame (1); A mounting bracket (2), the mounting bracket (2) being fixedly mounted on the workbench (11); A detection assembly, the detection assembly comprising an upper detection mechanism and a lower detection mechanism, the upper detection mechanism comprising a sealing cover (31), the sealing cover (31) being mounted on the mounting bracket (2), the lower detection mechanism comprising a fixed base (32), the fixed base (32) being mounted on the workbench (11); An inflation air pump (4), the inflation air pump (4) being mounted on the frame (1) and arranged below the workbench (11); The bottom of the fixed base (32) is provided with a connecting flange (321) extending outwards, the inflation air pump (4) is suitable for being connected to the connecting flange (321), and a pressure sensor is provided in the connecting flange (321); One end of the solenoid valve (5) to be tested is suitable for being mounted on the fixed base (32), the sealing cover (31) is suitable for moving downward to seal against the other end of the solenoid valve (5), and when the solenoid valve (5) is installed in place, the inflation air pump (4) is suitable for filling gas into the interior of the solenoid valve (5); A controller (6), wherein the controller (6) is provided with a display screen (61), wherein the pressure sensor transmits pressure data to the controller (6) via a WIFI module or a Bluetooth module, wherein the pressure sensor is connected to a network and powered on for P time, and then sends N pressure data to the controller (6) at intervals of Q time; wherein P and N are set values, and Q is a random value of 0 to 5 seconds, and the controller (6) is suitable for receiving the N data sent by the pressure sensor and recording and analyzing them.

2. The solenoid valve sealing detection device according to claim 1, characterized in that: The detection assembly further comprises a driving mechanism, the driving mechanism comprising a driving bracket (331) and a driving motor (332), the driving bracket (331) being slidably mounted on the mounting bracket (2), the driving motor (332) being mounted on the driving bracket (331), and the movable end of the driving motor (332) being connected to the sealing cover (31).

3. The solenoid valve sealing detection device according to claim 2, characterized in that: The driving mechanism further comprises an adjustment plate (333) and at least one guide column (334); the guide column (334) is mounted on the adjustment plate (333); a guide hole (331A) suitable for the guide column (334) to pass through is provided on the driving bracket (331); and the guide column (334) is suitable for moving in the guide hole (331A).

4. The solenoid valve sealing detection device according to claim 3, characterized in that: A limiting piece (334A) is provided at the end of the guide column (334) facing the drive motor (332).

5. The solenoid valve sealing detection device according to claim 2, characterized in that: The driving bracket (331) is slidably mounted on the mounting bracket (2) via at least one guide rail slider pair; wherein: The guide rail slider pair comprises: A guide rail (71) mounted on the mounting bracket (2); A sliding block (72) is mounted on the driving bracket (331).

6. The solenoid valve sealing detection device according to claim 2, characterized in that: The detection assembly comprises a driving cylinder (34), wherein the driving cylinder (34) is mounted on the mounting bracket (2), and the movable end of the driving cylinder (34) is connected to the driving bracket (331).

7. The solenoid valve sealing detection device according to claim 1, characterized in that: The lower detection mechanism further comprises a clamp seat (351) and at least one clamping bolt (352); the clamp seat (351) is mounted on the fixed base (32); the clamping bolt (352) is mounted on the clamp seat (351); when the valve base of the solenoid valve (5) is mounted on the fixed base (32), the clamping bolt (352) is screwed to move the clamping bolt (352) and abut against the valve base of the solenoid valve (5).

8. The solenoid valve sealing detection device according to claim 1, characterized in that: The inflation air pump (4) is suitable for being connected to the connecting flange (321) via a connecting pipe (41), and a sealing ring is provided between the connecting pipe (41) and the connecting flange (321).

9. An operating method of a solenoid valve sealing detection device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, equipment pre-check: start the controller (6) to perform a system self-check, confirm that the inflation pump (4), the pressure sensor and the drive mechanism are operating normally, and set the pressure fluctuation threshold range; S2. Workpiece clamping: vertically install the solenoid valve (5) to be tested on the fixed base (32), fix the valve base with the clamping bolts (352), and ensure that the connecting flange (321) and the bottom end of the solenoid valve (5) are airtightly connected; S3, sealing and pressurizing: the driving cylinder (34) pushes the sealing cover (31) downward, so that both ends of the solenoid valve (5) are in a closed state, and the air pump (4) fills gas into the interior of the solenoid valve (5); S4, dynamic monitoring: the pressure sensor starts data transmission after being powered on for P seconds, and continuously sends N groups of pressure values ​​at random intervals Q; S5, leakage analysis: after receiving N groups of pressure values, the controller (6) performs data analysis. When the pressure value data is less than the lowest value of the pressure threshold set by the solenoid valve (5) for N / 5 consecutive times, the solenoid valve (5) is judged to be unqualified, and otherwise it is qualified; S6. Safe disassembly: After the test is completed, the sealing cover (31) is first raised, and after the residual gas is slowly released, the valve base is disassembled by the clamping bolts (352), thereby completing the test of the solenoid valve (5).

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