Electromagnetic valve testing device

Abstract

The utility model relates to the technical field of electromagnetic valve service life testing, in particular to an electromagnetic valve testing device. The electromagnetic valve testing device comprises an electromagnetic valve, an inflation assembly, a time relay, a throttling ring and a gas detection assembly, wherein the electromagnetic valve is provided with an inlet and an outlet; the inflation assembly communicates with an inlet of the electromagnetic valve and is used for providing air for the electromagnetic valve. The time relay is electrically connected with the electromagnetic valve and used for controlling opening and closing of the electromagnetic valve; the throttling ring is communicated with an outlet of the electromagnetic valve, the throttling ring is provided with a throttling channel for air to pass through, and the channel hole diameter of the throttling channel is smaller than the caliber of the outlet; the gas detection assembly is communicated with the throttling channel of the throttling ring and used for detecting air passing through the throttling channel, generating a first feedback signal, a second feedback signal and a third feedback signal and controlling the electromagnetic valve testing device to test the service life of the electromagnetic valve. The time relay is arranged to control opening and closing of the electromagnetic valve to test the service life of the electromagnetic valve, and the problems of high test cost and complex operation can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic valve life test, in particular to an electromagnetic valve testing device. BACKGROUND

[0002] As an important automatic basic element, electromagnetic valve is widely used in controlling the flow path opening and closing of fluid medium (such as gas, liquid, etc.) in many industrial fields, and its stability and reliability directly relate to the normal operation and safety of the whole system. Life test of electromagnetic valve is one of the key means to evaluate its quality and reliability.

[0003] At present, in the common electromagnetic valve life test method, pressure is usually generated by means of air compressor, and pressure is regulated by means of pressure reducing valve. By calculating the relevant parameters, the operation of electromagnetic valve is accurately controlled by programmable logic controller (PLC). At the same time, by means of various types of sensors such as pressure sensor, flow sensor, temperature sensor, etc., the performance and life of electromagnetic valve are detected and evaluated. This test method not only has large hardware investment and high cost; when different models / specifications of electromagnetic valve are replaced, the judgment conditions also need to be changed, and the test method cannot be used for all models of electromagnetic valve, which has the problem of large debugging workload. In addition, using compressed air for testing also has the problems of large consumption of compressed air and large noise. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary to provide an electromagnetic valve testing device capable of testing the life of electromagnetic valve by a simple method.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] An electromagnetic valve testing device for detecting the service life of an electromagnetic valve, wherein the electromagnetic valve has an inlet and an outlet; the electromagnetic valve testing device comprises:

[0007] An air charging assembly for communicating with the inlet of the electromagnetic valve, for providing air to the electromagnetic valve;

[0008] A time relay for electrically connecting with the electromagnetic valve to control the opening and closing of the electromagnetic valve;

[0009] A throttle ring for communicating with the outlet of the electromagnetic valve, the throttle ring having a throttle passage through which air can pass, the passage aperture of the throttle passage being smaller than the aperture of the outlet;

[0010] A gas detection assembly communicating with the throttle passage of the throttle ring, for detecting air passing through the throttle passage and generating a first feedback signal, a second feedback signal and a third feedback signal, for controlling the time relay to open / close;

[0011] When the throttling passage is intermittently passed through by air for a preset time, the gas detection assembly generates the first feedback signal, and the electromagnetic valve testing device is in a state of testing the service life of the electromagnetic valve; when the throttling passage is continuously passed through by air for a preset time, the gas detection assembly generates the second feedback signal, and the electromagnetic valve testing device stops testing the service life of the electromagnetic valve; when the throttling passage is not passed through by air for a preset time, the gas detection assembly generates the third feedback signal, and the electromagnetic valve testing device stops testing the service life of the electromagnetic valve.

[0012] It can be understood that the opening and closing of the electromagnetic valve is controlled by the time relay, and then the opening / closing times of the electromagnetic valve are detected by the gas detection assembly, so as to obtain the service life of the electromagnetic valve. The electromagnetic valve testing device has simple overall structure, few debugging steps, and low cost. The electromagnetic valve testing device can also be used for service life testing of electromagnetic valves of various types, thereby expanding the application range of the electromagnetic valve testing device. In addition, the air consumption and noise can be reduced by using the throttling ring to control the air flow.

[0013] In one embodiment, the gas detection assembly includes a water tank, the water tank contains liquid, and the throttling ring is in communication with the water tank, for inputting air into the liquid and making the liquid in the water tank bubble.

[0014] In one embodiment, the gas detection assembly includes a flow meter.

[0015] In one embodiment, the channel aperture of the throttling passage is set as D, wherein 0.5mm≥D≥0.1mm.

[0016] In one embodiment, the air charging assembly includes an air compressor and a pressure reducing valve, the pressure reducing valve is arranged between the air compressor and the electromagnetic valve, and is in communication with the air compressor and the electromagnetic valve respectively.

[0017] The air compressor is used to provide air, and the pressure reducing valve can reduce the air pressure provided by the air compressor, so that the air pressure value introduced into the electromagnetic valve meets the working pressure value range of the electromagnetic valve.

[0018] In one embodiment, the electromagnetic valve testing device further includes a timer, the timer can record the time period when the time relay is turned on.

[0019] In one embodiment, the electromagnetic valve testing device further includes a counter, the counter is electrically connected with the time relay, and is used to record the opening / closing times of the electromagnetic valve.

[0020] In one embodiment, the number of throttle rings is configured to be multiple, and the multiple throttle rings (40) are arranged one-to-one corresponding to the multiple electromagnetic valves arranged in parallel;

[0021] The multiple throttle rings are capable of being communicated with the air charging assembly in parallel through the corresponding electromagnetic valves.

[0022] It can be understood that by configuring the number of electromagnetic valves and throttle rings to be multiple, the electromagnetic valve testing device can be used for life test of multiple electromagnetic valves at the same time, and the test efficiency is improved when multiple electromagnetic valves need to be tested.

[0023] In one embodiment, the electromagnetic valve testing device further comprises a communication device, the communication device has an air inlet and multiple air outlets, and the multiple air outlets are communicated with the air inlet in parallel; wherein the air inlet is communicated with the air charging assembly;

[0024] The multiple air outlets are used to correspond to the multiple electromagnetic valves arranged in parallel, and the air outlets are respectively communicated with the corresponding electromagnetic valves.

[0025] In one embodiment, the electromagnetic valve testing device further comprises a communication device, the communication device has an air inlet and multiple air outlets, and the multiple air outlets are communicated with the air inlet in parallel; wherein the air inlet is communicated with the air charging assembly;

[0026] The number of the multiple air outlets is greater than the number of the multiple throttle rings, part of the multiple air outlets are used to correspond to the multiple electromagnetic valves, and the air outlets are respectively communicated with the corresponding electromagnetic valves; the remaining part of the multiple air outlets are respectively plugged by plugs installed on the communication device.

[0027] Compared with the prior art, the electromagnetic valve testing device controls the opening and closing of the electromagnetic valve through the time relay, and then detects the opening / closing times of the electromagnetic valve through the gas detection assembly to obtain the life of the electromagnetic valve. The electromagnetic valve testing device has simple overall structure, few debugging steps, and low cost. The electromagnetic valve testing device can also be used for life test of multiple types of electromagnetic valves, and expands the application range of the electromagnetic valve testing device. In addition, by using the throttle ring to control the air flow, the air consumption and noise can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0029] Figure 1 The structural schematic diagram of the electromagnetic valve testing device provided by an embodiment of the present application.

[0030] Figure 2 The structural schematic diagram of the electromagnetic valve testing device provided by another embodiment of the present application.

[0031] The element reference numbers are as follows:

[0032] 100, electromagnetic valve testing device; 10, electromagnetic valve; 11, inlet; 12, outlet; 20, inflation assembly; 21, air compressor; 22, pressure reducing valve; 30, time relay; 31, power supply; 32, timer; 33, counter; 40, throttle ring; 50, gas detection assembly; 51, water tank; 52, liquid; 53, flow meter; 60, communication device; 61, air inlet; 62, air outlet; 63, plug. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more apparent and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0034] It should be noted that when an assembly is referred to as "fixed to" or "disposed on" another assembly, it can be directly on the other assembly or there can be a middle assembly. When an assembly is referred to as "connected to" another assembly, it can be directly connected to the other assembly or there can be a middle assembly. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation.

[0035] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or a quantity of indicated features. Thus, a feature defined with "first", "second" can include at least one of the feature implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0036] In the present application, unless otherwise explicitly specified and limited, "on", "under", "above", and "over" of a first feature to a second feature can mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "on", "above", and "over" of a first feature to a second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below", and "underneath" of a first feature to a second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more relevant listed items.

[0038] Please refer to Figure 1 and Figure 2This application provides a solenoid valve testing device 100 for detecting the service life of a solenoid valve 10, wherein the solenoid valve 10 has an inlet 11 and an outlet 12; the solenoid valve testing device 100 includes an air filling assembly 20, a time relay 30, a throttling ring 40, and a gas detection assembly 50; the air filling assembly 20 is connected to the inlet 11 of the solenoid valve 10 to supply air to the solenoid valve 10; the time relay 30 is electrically connected to the solenoid valve 10 to control the opening and closing of the solenoid valve 10; the throttling ring 40 is connected to the outlet 12 of the solenoid valve 10, and the throttling ring 40 has a throttling channel (not shown) through which air can pass, the orifice diameter of the throttling channel being smaller than the diameter of the outlet 12; the gas detection assembly 50 is connected to the throttling ring The throttling channel of valve 40 is connected to detect air passing through the throttling channel and generate a first feedback signal, a second feedback signal, and a third feedback signal. When air passes through the throttling channel at preset intervals, the gas detection component 50 generates the first feedback signal, and the solenoid valve testing device 100 is in a state of testing the service life of the solenoid valve 10. When air continuously passes through the throttling channel within the preset time, the gas detection component 50 generates the second feedback signal, and the solenoid valve testing device 100 stops testing the service life of the solenoid valve 10. When no air is conducted through the throttling channel within the preset time, the gas detection component 50 generates the third feedback signal, and the solenoid valve testing device 100 stops testing the service life of the solenoid valve 10.

[0039] As shown above, by setting a time relay 30 to control the opening and closing of the solenoid valve 10, and then using a gas detection component 50 to detect the number of times the solenoid valve 10 opens and closes, the lifespan of the solenoid valve 10 can be obtained. This solenoid valve testing device 100 has a simple overall structure and requires fewer debugging steps, thus reducing costs. This solenoid valve testing device 100 can also be used for life testing of various models of solenoid valves 10, expanding its applicability. Furthermore, by using a throttling ring 40 to control airflow, air consumption and noise can be reduced.

[0040] like Figure 1 and Figure 2 As shown, the inflation assembly 20 includes an air compressor 21 and a pressure reducing valve 22. The pressure reducing valve 22 is disposed between the air compressor 21 and the solenoid valve 10, and is connected to both the air compressor 21 and the solenoid valve 10.

[0041] The air compressor 21 is used to provide air with a certain pressure, and the pressure reducing valve 22 can reduce the pressure of the air provided by the air compressor 21 so that the air pressure value introduced into the solenoid valve 10 meets the working pressure value requirement of the solenoid valve 10.

[0042] In an embodiment, the time relay 30 is powered by the power supply 31, and the time relay 30 can control the electromagnetic valve 10 to open or close, and the electromagnetic valve 10 opens for a time t1. The electromagnetic valve 10 closes for a time t2, and t1+t2 is the length of one opening and closing cycle of the electromagnetic valve.

[0043] As shown in Figure 1 , the electromagnetic valve testing device 100 further comprises a timer 32, which can record the time period t3 when the time relay 30 is turned on. Wherein, t3 / (t1+t2)=A, thus the opening and closing number A of the electromagnetic valve 10 can be obtained, and when the electromagnetic valve 10 has a problem, the opening and closing number A of the corresponding electromagnetic valve 10 is the service life of the electromagnetic valve 10.

[0044] In an embodiment, as shown in Figure 2 , the electromagnetic valve testing device 100 further comprises a counter 33, which is electrically connected with the time relay 30, and is used to record the opening and closing number A of the electromagnetic valve 10, and when the electromagnetic valve 10 has a problem, the opening and closing number A of the corresponding electromagnetic valve 10 is the service life of the electromagnetic valve 10.

[0045] As shown in Figure 1 , the gas detection assembly 50 comprises a water tank 51, which contains a liquid 52, and the throttle ring 40 is in communication with the water tank 51, which is used to input air into the liquid 52 and make the liquid 52 in the water tank 51 bubble. Wherein, the gas detection assembly 50 further comprises a bubble detection component, which can detect bubbles and generate first, second and third feedback signals.

[0046] Here, the bubble detection component can be configured as a monitor, a pressure sensor, a capacitive sensor, etc., or can use visual observation method for testing. According to the test requirements, the tester can choose different methods to detect the bubble, which will not be described here.

[0047] In this embodiment, the visual observation method is used for testing, and when the bubbles are observed to be spaced apart and the interval time is t1 and the bubble emergence time is t2, the opening and closing number of the electromagnetic valve 10 is recorded. When it is observed that no bubbles are emitted for more than t1 time or the bubble emission time is more than t2, the recording of the opening and closing number of the electromagnetic valve 10 is stopped, so as to achieve the purpose of detecting the service life of the electromagnetic valve 10.

[0048] In an embodiment, as shown in Figure 2As shown, the gas detection component 50 includes a flow meter 53, which monitors the air flow behind the throttling ring 40. When air flow can be detected at interval t1 and the time for detecting air flow is t2, the number of opening and closing times of the solenoid valve 10 is recorded. When no gas flow is detected after time t1 or the time for detecting gas flow exceeds t2, the recording of the number of opening and closing times of the solenoid valve 10 is stopped, thereby achieving the purpose of detecting the life of the solenoid valve 10.

[0049] In one embodiment, the orifice diameter of the throttling channel is set to D, wherein 0.5mm ≥ D ≥ 0.1mm.

[0050] like Figure 1 and Figure 2 As shown, the number of throttling rings 40 is configured to be multiple, for example, two, three, four, etc. Multiple throttling rings 40 are used to correspond one-to-one with multiple solenoid valves 10 connected in parallel;

[0051] Multiple throttling rings 40 can be connected to the inflation assembly 20 in parallel via corresponding solenoid valves 10. Thus, by configuring multiple solenoid valves 10 and multiple throttling rings 40, the solenoid valve testing device 100 can simultaneously perform life tests on multiple solenoid valves 10. When multiple solenoid valves 10 need to be tested for life, the above method can improve testing efficiency.

[0052] In one embodiment, the solenoid valve testing device 100 further includes a communicating vessel 60, which has an air inlet 61 and multiple air outlets 62. The multiple air outlets 62 are connected in parallel to the air inlet 61. The air inlet 61 is connected to the inflation component 20. The multiple air outlets 62 correspond one-to-one with multiple solenoid valves 10 arranged in parallel, and the solenoid valve 10 is connected to the corresponding air outlet 62.

[0053] like Figure 2 As shown, when the number of multiple air outlets 62 is greater than the number of multiple throttling rings 40, some of the multiple air outlets 62 correspond one-to-one with multiple solenoid valves 10, and the air outlets 62 are connected to the corresponding solenoid valves 10 respectively; the remaining air outlets 62 are blocked by plugs 63 installed on the communicating vessel 60.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A solenoid valve testing device for detecting the service life of a solenoid valve (10), wherein, The solenoid valve (10) has an inlet (11) and an outlet (12); characterized in that the solenoid valve testing device (100) includes: An air-filling assembly (20) is used to communicate with the inlet (11) of the solenoid valve (10) and to provide compressed air to the solenoid valve (10); A time relay (30) is used to be electrically connected to the solenoid valve (10) to control the opening and closing of the solenoid valve (10); A throttling ring (40) is used to communicate with the outlet (12) of the solenoid valve (10). The throttling ring (40) has a throttling channel through which air can pass, and the orifice diameter of the throttling channel is smaller than the diameter of the outlet (12). The gas detection component (50) is connected to the throttling channel of the throttling ring (40) and is used to detect the air passing through the throttling channel and generate a first feedback signal, a second feedback signal and a third feedback signal; When air passes through the throttling channel at intervals within a preset time, the gas detection component (50) generates the first feedback signal, and the solenoid valve testing device (100) is in a state of testing the service life of the solenoid valve (10); when air continuously passes through the throttling channel within a preset time, the gas detection component (50) generates the second feedback signal, and the solenoid valve testing device (100) stops testing the service life of the solenoid valve (10); when air is not conducted through the throttling channel within a preset time, the gas detection component (50) generates the third feedback signal, and the solenoid valve testing device (100) stops testing the service life of the solenoid valve (10).

2. The solenoid valve testing device according to claim 1, characterized in that, The gas detection component (50) includes a water tank (51) containing liquid (52), and the throttling ring (40) is connected to the water tank (51) for introducing air into the liquid (52) and causing bubbles to rise in the liquid (52) in the water tank (51).

3. The solenoid valve testing device according to claim 1, characterized in that, The gas detection assembly (50) includes a flow meter (53).

4. The solenoid valve testing device according to claim 1, characterized in that, The orifice diameter of the throttling channel is set to D, where 0.5mm ≥ D ≥ 0.1mm.

5. The solenoid valve testing device according to claim 1, characterized in that, The inflation assembly (20) includes an air compressor (21) and a pressure reducing valve (22). The pressure reducing valve (22) is disposed between the air compressor (21) and the solenoid valve (10), and is connected to the air compressor (21) and the solenoid valve (10) respectively. The air compressor (21) is used to provide compressed air, and the pressure reducing valve (22) can reduce the pressure of the air provided by the air compressor (21) so that the air pressure value introduced into the solenoid valve (10) is within the working pressure range of the solenoid valve (10).

6. The solenoid valve testing device according to claim 1, characterized in that, The solenoid valve testing device (100) also includes a timer (32), which is capable of recording the time period during which the time relay (30) is turned on.

7. The solenoid valve testing device according to claim 1, characterized in that, The solenoid valve testing device (100) also includes a counter (33), which is electrically connected to the time relay (30) and is used to record the number of times the solenoid valve (10) is opened and closed.

8. The solenoid valve testing device according to claim 1, characterized in that, The number of throttling rings (40) is configured to be multiple, and the multiple throttling rings (40) are configured to correspond one-to-one with the multiple solenoid valves (10) arranged in parallel; Among them, multiple throttling rings (40) can be connected to the inflation assembly (20) in parallel through the corresponding solenoid valves (10).

9. The solenoid valve testing device according to claim 8, characterized in that, The solenoid valve testing device (100) further includes a communicating vessel (60), which has an air inlet (61) and multiple air outlets (62), and the multiple air outlets (62) are connected to the air inlet (61) in parallel; wherein the air inlet (61) is connected to the inflation assembly (20); The multiple air outlets (62) are used to correspond one-to-one with the multiple solenoid valves (10) arranged in parallel, and the air outlets (62) are respectively connected to the corresponding solenoid valves (10).

10. The solenoid valve testing device according to claim 8, characterized in that, The solenoid valve testing device (100) further includes a communicating vessel (60), which has an air inlet (61) and multiple air outlets (62), and the multiple air outlets (62) are connected to the air inlet (61) in parallel; wherein the air inlet (61) is connected to the inflation assembly (20); The number of the plurality of air outlets (62) is greater than the number of the plurality of throttling rings (40). Some of the plurality of air outlets (62) are used to correspond one-to-one with the plurality of solenoid valves (10), and the air outlets (62) are respectively connected to the corresponding solenoid valves (10); the remaining portion of the plurality of air outlets (62) are respectively blocked by plugs (63) installed on the communicating vessel (60).

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