Reed valve detection device and system

Abstract

A reed valve detection device and system includes an airflow supply mechanism and an airflow impact control mechanism. A gas buffer chamber is provided between the inlet and outlet bases of the airflow impact control mechanism. The outlet base is provided with a detection interface that communicates with the gas buffer chamber and is used to connect to the reed valve. The inlet base is provided with an air chamber connected to the airflow supply mechanism. Multiple solenoid valve mounting holes are distributed around the air chamber, connected to the gas buffer chamber. The air chamber is connected to each solenoid valve mounting hole via gas channels distributed within the inlet base, and is connected to the gas buffer chamber via solenoid valves. The on-off of the impact airflow is controlled by multiple solenoid valves. Multiple low-flow, high-frequency solenoid valves can be used to achieve high-frequency switching control of large-flow gas. This solves the problems of slow switching response, insufficient switching frequency, and overheating under high-flow and high-current conditions associated with large-flow solenoid valves, achieving high-frequency airflow impact that simulates the working process of a real engine.

Description

Technical Field

[0001] The present invention relates to a detection technology for engine intake system components, in particular to a reed valve detection device and system. Background Art

[0002] The reed valve is a critical component in the intake system of a two-stroke engine. It directly controls the amount of air entering the crankcase, indirectly impacting the engine's power, fuel economy, and emissions. During engine operation, the reed valve undergoes two phases: opening and closing. The frequency of these openings and closings increases with increasing engine speed. This frequent opening and closing directly impacts the lifespan of the reed valve. Especially at certain speeds, when its vibration frequency approaches the reed valve's natural frequency, resonance may occur. The resonating reed will strike the stop plate with significant force and amplitude, potentially shattering the reed. Damage to the reed valve inevitably results in reduced engine power output and may even cause the engine to stop. Therefore, testing the effectiveness of the reed valve assembly is crucial to product quality control.

[0003] Measuring the reliability and intake volume of reed valves at various operating points during engine operation has been relatively imperfect. Currently, two methods are commonly used. The first involves directly applying a normal force to the reed and measuring its deformation. This testing process applies a direct mechanical force to the reed, whereas in actual engine operation, it is the airflow that exerts fluid force on the reed valve. Therefore, this method struggles to simulate the actual force of gas flow and is difficult to achieve high-frequency switching during testing.

[0004] Second, the opening and closing of the air flow valve is used to apply a constant frequency of airflow shock to the reed valve. To realistically simulate the operation of a two-stroke engine, the air flow rate required to impact the reed valve must be guaranteed. However, due to technical limitations of the air flow valve, the response time of the air flow valve required to detect air flow is too long, making it difficult to achieve high-frequency airflow changes. Furthermore, the excessive control current leads to severe heat generation during prolonged operation. Furthermore, this high-flow air flow valve struggles to achieve precise airflow control, making it difficult to switch between angle and time control modes. Furthermore, during operation, there is no realistic simulation of air flow pressure and temperature to adjust the solenoid valve opening. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that a device for detecting airflow impact on a reed valve is difficult to achieve high-frequency airflow conversion, and to provide a reed valve detection device and system.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a reed valve detection device, comprising an airflow supply mechanism for providing a pressurized airflow, and an airflow impact control mechanism for connecting the airflow supply mechanism and the reed valve to be detected, the airflow impact control mechanism comprising an air inlet end base and an air outlet end base that are connected to each other, a gas buffer cavity is provided between the air inlet end base and the air outlet end base, and a detection interface that is connected to the gas buffer cavity and is used to connect the reed valve is provided on the air outlet end base; an air chamber for connecting the airflow supply mechanism is provided on the air inlet end base, and a plurality of solenoid valve mounting holes connected to the gas buffer cavity are distributed around the air chamber, the air chamber is connected to each solenoid valve mounting hole through a gas channel distributed in the air inlet end base, and is connected to the gas buffer cavity via a solenoid valve arranged in the solenoid valve mounting hole.

[0007] The solenoid valve mounting holes are evenly distributed around the air chamber, and the center of the air chamber corresponds to the center of the gas buffer cavity.

[0008] A transition sleeve is provided in the mounting hole of the solenoid valve, the inner hole shape of the transition sleeve matches the solenoid valve, and a vent hole corresponding to the gas channel is provided on the transition sleeve.

[0009] The air inlet end base is provided with an air chamber and a solenoid valve mounting hole on one side thereof, and is connected to a pressure plate. An opening corresponding to the air chamber is provided in the center of the pressure plate, and a recess for surrounding and fixing the solenoid valve is provided on the circumference of the pressure plate.

[0010] A concave cavity is provided on one side of the gas outlet base for docking with the gas inlet base, and the circumference of the concave cavity is docked with the gas inlet base through a sealing ring to form the gas buffer cavity.

[0011] The air inlet end base is provided with a groove docking with the concave cavity of the air outlet end base, and the groove is located in a circular area surrounded by the multiple solenoid valve mounting holes.

[0012] The air flow supply mechanism includes a primary air storage tank and a secondary air storage tank. The primary air storage tank is connected to the secondary air storage tank via a pressure reducing valve, and the secondary air storage tank is connected to the air chamber of the air inlet end base via an air supply pipeline.

[0013] The reed valve detection device is further provided with a control unit, which receives air pressure and flow signals and controls the switching frequency of the solenoid valve.

[0014] The air flow impact control mechanism is used to connect the air supply pipeline of the air flow supply mechanism, which is connected to a temperature and pressure transmitter for detecting the temperature and pressure of the gas in the pipeline and a flow transmitter for detecting the gas flow in the pipeline. The temperature and pressure transmitter and the flow transmitter are connected to the control unit.

[0015] The present invention also provides a reed valve detection system, which includes the above-mentioned reed valve detection device, wherein the reed valve detection device is fixed on a test bench by a bracket, and a display screen for displaying monitoring parameters and an operating module for controlling the operation mode of the solenoid valve are provided on the test bench. The operating module is connected to the control unit in the reed valve detection device for controlling the switch of the solenoid valve.

[0016] The beneficial effect of the present invention is that the airflow impact control mechanism diverts the supplied pressurized airflow to multiple circumferential solenoid valves, which then converge into an impact airflow in the gas buffer chamber for reed valve detection. The impact airflow is controlled by multiple solenoid valves, enabling high-frequency on / off control of large gas flows using multiple low-flow, high-frequency solenoid valves. This solves the problems of slow on / off response, insufficient switching frequency, and overheating at high flow and current levels associated with high-flow solenoid valves, achieving high-frequency airflow impact that simulates the operating process of a real engine.

[0017] Furthermore, by installing a pressure-reducing valve between the primary and secondary air tanks, the compressed air is adjusted to the desired pressure, thereby simulating the compressed air in the actual engine operation process. During the simulation, the temperature and pressure transmitters provide real-time temperature and pressure feedback to the control unit. The control unit then adjusts the opening time of the solenoid valve based on the feedback temperature and pressure values ​​in real time, further precisely controlling the air flow through the reed valve. The entire test system can be designed with two control modes: angle-based and time-based switching, capable of realistically simulating the opening time of the engine reed valve and accelerating endurance simulation tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the detection device of the present invention.

[0019] Figure 2 It is a schematic diagram of the air intake side of the airflow impact control mechanism of the present invention.

[0020] Figure 3 It is a schematic diagram of the air outlet side of the airflow impact control mechanism of the present invention.

[0021] Figure 4 It is a cross-sectional schematic diagram of the airflow impact control mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the air intake end base of the airflow impact control mechanism.

[0023] Figure 6 yes Figure 5 The diagram shows the back structure of the air inlet end base.

[0024] Figure 7 yes Figure 5 Schematic diagram of the cross section of the air inlet end base is shown.

[0025] Figure 8 It is a structural diagram of the pressure plate.

[0026] Figure 9 It is a cross-sectional schematic diagram of the transition sleeve.

[0027] Figure 10 It is a schematic diagram of the structure of the air outlet base of the airflow impact control mechanism.

[0028] Figure 11 yes Figure 10 The diagram shows the back structure of the outlet end base.

[0029] Figure 12 It is a schematic diagram of the cross-sectional structure of the outlet end base.

[0030] Figure 13 It is a structural diagram of the air flow supply mechanism.

[0031] Figure 14 It is a schematic diagram of the arrangement of the detection device of the present invention on a test bench.

[0032] Figure 15 It is a structural diagram of the test bench.

[0033] Figure 16 It is a schematic diagram of the bracket structure for fixing the detection device.

[0034] Figure 17 It is a schematic diagram of the detection system of the present invention.

[0035] Markings in the figure: 1. Test bench, 101. Temperature and pressure display screen, 102. Gas flow display screen, 103. Speed ​​control touch screen, 104. Time / angle control switch key, 105. Support cabinet, 106. Horizontal support plate, 107. Threaded hole A, 2. Air flow supply mechanism, 201. First-level gas storage tank, 202. Second-level gas storage tank, 203. Pressure reducing valve, 204. Gas supply pipeline, 205. Air inlet interface, 206. Valve, 207. Air outlet, 3. Air flow impact switching mechanism, 4. Air inlet end base, 401. Air chamber, 402. Solenoid valve mounting hole, 403. Gas channel, 404. Groove, 405. Threaded hole D, 406, threaded hole E, 5, outlet base, 501, detection interface, 502, concave cavity, 503, sealing groove, 504, threaded hole F, 505, threaded hole G, 6, gas buffer chamber, 7, solenoid valve, 8, transition sleeve, 801, vent, 802, small seat hole, 803, large seat hole, 9, pressure plate, 901, opening, 902, notch, 903, through hole A, 10, reed valve, 11, sealing ring, 12, temperature and pressure transmitter, 13, flow transmitter, 14, bracket, 141, threaded hole B, 142, large through hole, 143, threaded hole C, 15, three-way connector, 16, pressure gauge, 17, air pump. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments. The specific contents listed in the following embodiments are not limited to the technical features required to solve the technical problems to be solved by the technical solutions described in the claims. At the same time, the examples listed are only part of the present invention, not all embodiments.

[0037] like Figure 1 As shown, the reed valve testing device of the present invention includes an airflow supply mechanism 2 and an airflow impact control mechanism 3. The airflow supply mechanism 2 is used to provide pressurized airflow to the airflow impact control mechanism 3. The airflow impact control mechanism 3 receives the pressurized airflow from the airflow supply mechanism 2 and controls the high-frequency on-off of the airflow, thereby generating a high-frequency airflow impact on the connected reed valve 10 to be tested, simulating its state under engine operating conditions.

[0038] like Figure 2 、 3 As shown in FIG4 , the airflow impact control mechanism 3 includes an air inlet base 4 connected to the airflow supply mechanism 2 and an air outlet base 5 connected to the reed valve to be detected 10. The air inlet base 4 and the air outlet base 5 are butted together, and a gas buffer chamber 6 is formed between the two.

[0039] like Figure 5 、 6 As shown in Figure 7, there is an air chamber 401 in the center of the air inlet end base 4, and a plurality of solenoid valve mounting holes 402 are distributed around the air chamber 401. The air chamber 401 is connected to each solenoid valve mounting hole 402 through a gas channel 403 distributed in the air inlet end base 4. The solenoid valve mounting hole 402 is connected to the gas buffer chamber 6, and a solenoid valve 7 is provided inside the solenoid valve 7 for controlling the gas passage between the gas channel 403 and the gas buffer chamber 6. The air chamber 401 is connected to the air flow supply mechanism 2, and the supplied pressurized air flow is distributed from the air chamber 401 through the gas channels 403 distributed on its circumference to each solenoid valve mounting hole 402, and the solenoid valve 7 is connected to the gas buffer chamber 6. The solenoid valve 7 adopts a gas solenoid valve that can be switched on and off at a high frequency, and its switching frequency is synchronously controlled by the control unit.

[0040] like Figure 4 As shown, the solenoid valve 7 is assembled in the solenoid valve mounting hole 402 using a transition sleeve 8. The structure of the transition sleeve 8 is as follows: Figure 9As shown, its inner hole shape matches that of the solenoid valve 7 and is divided into two sections, a small seat hole 802 and a large seat hole 803, of different apertures in the axial direction. A vent hole 801 is provided on the transition sleeve 8 for connecting to the gas passage 403. The transition sleeve 8 is interference-fitted into the solenoid valve mounting hole 402, and the vent hole 801 is aligned with the gas passage 403 as much as possible. The solenoid valve 7 is installed in the transition sleeve 8, and the large O-ring of the solenoid valve 7 is connected to the large seat hole 803 in the transition sleeve 8, while the small O-ring of the solenoid valve 7 is connected to the small seat hole 802 in the transition sleeve 8, thereby ensuring the sealing of the air passage.

[0041] Figure 2 In the embodiment shown in FIG-7 , twelve solenoid valve mounting holes 402 are evenly distributed around the perimeter of the gas chamber 401, and twelve solenoid valves 7 are installed in corresponding solenoid valve mounting holes 402. The circle formed by the twelve solenoid valves 7 is concentric with the gas chamber 401, and the gas channels 403 that distribute gas to the four sides are of equal length, ensuring consistent gas pressure distribution.

[0042] like Figure 2 and 8 As shown, a pressure plate 9 is connected to one side of the air inlet base 4, which is provided with an air chamber 401 and a solenoid valve mounting hole 402. The pressure plate 9 has an opening 901 in its center and a notch 902 around its circumference. After the transition sleeve 8 and the solenoid valve 7 are installed into the solenoid valve mounting hole 402, the pressure plate 9 is installed. The opening 901 in the center of the pressure plate 9 corresponds to the air chamber 401. The notch 902 around the pressure plate 9 avoids and semi-encloses the solenoid valve 7, pressing against the flange surface around the solenoid valve 7. Bolts are inserted through the through hole A 903 of the pressure plate and the threaded hole D 405 of the air inlet base 4 to tightly press the pressure plate 9 against the air inlet base 4, thereby compressing the solenoid valve 7.

[0043] like Figure 4 As shown, a detection interface 501 is provided on the outlet base 5. The detection interface 501 is used to fix the reed valve 10 to be tested and is internally connected to the gas buffer chamber 6. The airflow delivered by multiple solenoid valves 7 converges in the gas buffer chamber 6, forming a pressurized airflow that can flow out through the detection interface 501 to impact the reed valve 10.

[0044] like Figure 10 、 11 As shown in FIG12, a concave cavity 502 is provided on one side of the outlet end base 5, and a sealing groove 503 is provided on the circumference of the concave cavity 502. A sealing ring 11 is provided in the sealing groove 503. After the side of the outlet end base 5 with the concave cavity 502 is docked with the inlet end base 4, the gas buffer chamber 6 is formed at the position of the concave cavity 502. Bolts are passed through the threaded holes F 504 and F 506 of the outlet end base 5. Figure 6The threaded hole E 406 of the air inlet base 4 connects and fixes the air inlet base 4 and the air outlet base 5 and compresses the sealing ring 11 to ensure the sealing of the end faces of the air inlet base and the air outlet base.

[0045] The detection interface 501 of the outlet base 5 is set in the center of the cavity 502. Figure 10 and 11 In the illustrated embodiment, a rectangular air passage is provided. A reed valve 10 is positioned externally at the detection interface 501. The reed valve 10 is secured to the outlet base 5 using bolts, through holes in the connecting seat on either side of the reed valve 10, and threaded holes G 505 in the outlet base 5. Sealant is applied to ensure a tight seal.

[0046] like Figure 4 and 6 As shown, a groove 404 is provided on the side of the inlet base 4 that docks with the outlet base 5. This groove 404 is located within the circular area enclosed by the multiple solenoid valve mounting holes 402 and, together with the concave cavity 502 of the outlet base 5, forms the gas buffer chamber 6. The provision of groove 404 increases the buffer space in front of the reed valve inlet, avoiding the airflow throttling effect caused by the cross-sectional area of ​​the airway. Furthermore, groove 404 is recessed inward relative to the solenoid valve mounting holes 402 at the outlet of the gas buffer chamber 6, causing the airflows emanating from each solenoid valve mounting hole 402 to swirl and mix in the recessed area, preventing a single airflow from directly impacting the detection interface 501.

[0047] like Figure 13 As shown, the airflow supply mechanism 2 includes a primary air tank 201, a secondary air tank 202, and related pipelines. The primary air tank 201 is connected to the pipeline's air inlet port 205 and is connected to the secondary air tank 202 via a pressure reducing valve 203. Gas reduced to the desired target pressure is temporarily stored in the secondary air tank 202, which then provides pressurized airflow to the airflow impact control mechanism 3 via a supply pipeline 204. The air outlet 207 of the supply pipeline 204 is interference-fitted with the inlet of the air chamber 401 of the air inlet base 4. The gas in the primary air tank 201 can be replenished by a supply source such as an air pump.

[0048] The gas supply line 204 is connected to a temperature and pressure transmitter 12 and a flow rate transmitter 13. The temperature and pressure transmitter 12 is used to detect the temperature and pressure of the gas output from the secondary gas storage tank 202, while the flow rate transmitter 13 is used to detect the flow rate of gas supplied to the airflow impact control mechanism 3. Both the temperature and pressure transmitter 12 and the flow rate transmitter 13 are connected to a control unit, which controls the airflow supply and the opening and closing of the solenoid valve based on detection parameters and a set program.

[0049] like Figure 14As shown, the reed valve detection device system of the present invention includes a test bench 1, an air flow supply mechanism 2 and an air flow impact control mechanism 3 and is fixed on the test bench 1 through a bracket 14. The bracket 14 is in the form of a plate, and its vertical section is as follows Figure 16 As shown, it is L-shaped and has a large through-hole 142 on its plate surface, through which the air supply pipe 204 of the air flow supply mechanism 2 can pass. A threaded hole B 141 is provided on the side wall of the plate surface at the large through-hole 142, which is used to lock and fix the air supply pipe 204. A threaded hole C 143 is provided on the bent portion at the lower end of the bracket 14, which is connected to the threaded hole A 107 of the horizontal support plate 106 of the test bench 1 by bolts to fix the bracket 14 on the test bench 1. The test bench 1 is provided with a display screen for displaying monitoring parameters, such as a temperature and pressure display screen 101, a gas flow display screen 102, and an operating module for controlling the operating mode of the solenoid valve 7, such as a speed control touch screen 103 and a time / angle control switch key 104. The operating module is connected to the control unit, which controls the working mode of the corresponding part according to the operating instructions.

[0050] The working principle of the detection device of the present invention is as follows Figure 17As shown, in one embodiment, its working process is as follows: the industrial air pump delivers gas of a certain pressure to the primary air storage tank, the time / angle control switch key 104 is switched to the angle switch key, and the control unit adjusts to the angle control mode according to the signal given by the switch key, and adjusts the speed control button on the speed control touch screen 103 to set the speed. The control unit will find the pressure value of the engine intake system at the corresponding simulated speed based on the speed signal and the MAP chart stored in itself, and then send an output signal to the pressure reducing valve 203. The pressure reducing valve adjusts the air flow pressure to the required target value and delivers it to the secondary air storage tank 202 for energy storage. After a period of inflation, valve 206 is opened. The control unit also collects speed and angle switch key signals, converts them into corresponding angles and speeds, and then simulates the lead angle and pulse width signals for the engine's reed valve opening. Simultaneously, it issues commands to the twelve high-frequency solenoid valves 7, which open and close at high frequencies under the control of these commands. When a single solenoid valve 7 is opened, air flows through gas channel 403 and vent 801 into the buffer space in front of the reed valve inlet, formed by cavity 502 and groove 404. The total flow from the twelve solenoid valves converges and impacts the reed valve, thereby controlling its opening and closing at the corresponding engine speed. Throughout this process, the temperature and pressure transmitter 12 transmits the collected airflow pressure and temperature values ​​to the control unit, which adjusts the opening lead time and pulse width based on these values, more realistically simulating the engine's operating state. The flow transmitter 13 transmits the collected airflow flow rate to the gas flow display 102, which displays the flow rate value under this operating condition in real time. Because the simulated engine requires high airflow, twelve channels are used to avoid overheating and burning of a single air flow valve under high flow and current conditions. Switching the time / angle control switch 104 to the time switch directly finds the opening advance time and pulse width at the corresponding speed without conversion. The reed is then opened and closed in the same manner as described above. This module adjusts the corresponding opening advance time and pulse width at each speed. Increasing the corresponding time value can accelerate fatigue testing.

[0051] Under specific operating conditions, the opening and flow rate of a reed valve are primarily determined by the pressure differential between the gas before and after the valve. Flow rate at different pressure differentials is a key evaluation metric for the reed valve, reflecting the amount of air entering the engine from the intake system and directly impacting the engine's performance. Furthermore, as engine speed increases, the reed valve requires frequent opening and closing. This high-frequency movement can cause it to align with its natural frequency under certain conditions, causing resonance. This resonance can put the reed at risk of breakage and seriously affect intake flow rate. The detection system provided by this solution achieves the following: a pressure reducing valve is installed between the primary and secondary air tanks to adjust the compressed air to the required pressure, thereby simulating the compressed air during actual engine operation. Based on the reed valve opening and closing times during each engine cycle, twelve high-frequency solenoid valve signals are simulated to drive the valves to open and close within the corresponding timeframe. The high-frequency solenoid valves ensure the high-frequency opening and closing of the reed valves by switching the airflow on and off. During the simulation process, the temperature and pressure transmitters feed back the temperature and pressure to the control unit in real time. The control unit then corrects the opening time of the solenoid valve based on the fed-back temperature and pressure values, further precisely controlling the air flow through the reed valve. The twelve high-frequency solenoid valves prevent overheating of a single air circulation valve under high flow and high current conditions. The entire test system is designed with two control modes based on angle and time switching, which can realistically simulate the opening intake time of the engine reed valve and the accelerated endurance simulation test.

[0052] The above description of the specific embodiments is only used to help understand the technical concept and core ideas of the present invention. Although specific preferred embodiments are used herein to describe and illustrate the technical solutions, they should not be understood as limiting the present invention itself. Those skilled in the art may make various changes in form and details without departing from the technical concept of the present invention. These easily conceived changes or substitutions should all be included within the scope of protection of the present invention.

Claims

1. A reed valve detection device, characterized in that: The invention comprises an air flow supply mechanism (2) for providing a pressurized air flow, and an air flow impact control mechanism (3) for connecting the air flow supply mechanism (2) and a reed valve (10) to be detected, wherein the air flow impact control mechanism (3) comprises an air inlet end base (4) and an air outlet end base (5) which are connected to each other, a gas buffer chamber (6) is provided between the air inlet end base (4) and the air outlet end base (5), and a detection interface (6) is provided on the air outlet end base (5) which is in communication with the gas buffer chamber (6) and is used to connect the reed valve (10). An air chamber (401) for connecting to the air flow supply mechanism (2) is provided on the air inlet end base (4), and a plurality of solenoid valve mounting holes (402) connected to the gas buffer chamber (6) are distributed around the air chamber (401). The air chamber (401) is connected to each solenoid valve mounting hole (402) through a gas channel (403) distributed in the air inlet end base (4), and is connected to the gas buffer chamber (6) via a solenoid valve (7) provided in the solenoid valve mounting hole (402); A concave cavity (502) is provided on one side of the outlet end base (5) for docking with the inlet end base (4), and the circumference of the concave cavity (502) docks with the inlet end base (4) via a sealing ring (11) to enclose the gas buffer cavity (6); The air inlet end base (4) is provided with a groove (404) that docks with the concave cavity (502) of the air outlet end base (5), and the groove (404) is located in a circular area surrounded by a plurality of solenoid valve mounting holes (402); The groove (404) is recessed inwardly at the outlet of the gas buffer chamber (6) relative to the solenoid valve mounting hole (402), so that the airflow rushing out of each solenoid valve mounting hole (402) swirls and mixes in the recess.

2. A reed valve detection device according to claim 1, characterized in that: The solenoid valve mounting holes (402) are evenly distributed around the air chamber (401), and the center of the air chamber (401) corresponds to the center of the gas buffer cavity (6).

3. A reed valve detection device according to claim 1, characterized in that: A transition sleeve (8) is provided in the solenoid valve mounting hole (402), the inner hole shape of the transition sleeve (8) matches the solenoid valve (7), and a vent hole (801) corresponding to the gas channel (403) is provided on the transition sleeve (8).

4. A reed valve detection device according to claim 1, characterized in that: The air inlet end base (4) is provided with an air chamber (401) and a solenoid valve mounting hole (402) on one side thereof, and is connected to a pressure plate (9). An opening (901) corresponding to the air chamber (401) is provided at the center of the pressure plate (9), and a recess (902) is provided on the circumference of the pressure plate (9) for surrounding and fixing the solenoid valve (7).

5. The reed valve detection device according to claim 1, characterized in that: The air flow supply mechanism (2) comprises a primary air storage tank (201) and a secondary air storage tank (202), wherein the primary air storage tank (201) is connected to the secondary air storage tank (202) via a pressure reducing valve (203), and the secondary air storage tank (202) is connected to the air chamber (401) of the air inlet end base (4) via an air supply pipeline (204).

6. A reed valve detection device according to claim 1, characterized in that: A control unit is also provided, which receives air pressure and flow signals and controls the switching frequency of the solenoid valve (7).

7. A reed valve detection device according to claim 6, characterized in that: The airflow impact control mechanism (3) is connected to the air supply pipeline (204) of the airflow supply mechanism (2); the air supply pipeline (204) is connected to a temperature and pressure transmitter (12) for detecting the temperature and pressure of the gas in the pipeline and a flow transmitter (13) for detecting the flow of gas in the pipeline; the temperature and pressure transmitter (12) and the flow transmitter (13) are connected to the control unit.

8. A reed valve detection system, characterized by: The invention comprises a reed valve detection device according to any one of claims 1 to 7, wherein the reed valve detection device is fixed on a test bench (1) via a bracket (14), a display screen for displaying monitoring parameters and an operating module for controlling the operation mode of the solenoid valve (7) are provided on the test bench (1), and the operating module is connected to a control unit in the reed valve detection device for controlling the switch of the solenoid valve (7).

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