A stage light waterproof testing device

Abstract

This utility model relates to a waterproof testing device for stage lights, including a positive and negative pressure module installed inside the device housing; the positive and negative pressure module is connected to a connection port for testing; the device housing is provided with a control switch for controlling the positive and negative pressure module to output positive or negative pressure from the connection port; this utility model, by setting up a positive and negative pressure module and a multi-channel control structure, realizes non-destructive and rapid testing of stage lights, and has the advantages of improving waterproof testing efficiency, reducing resource consumption, and ensuring equipment safety.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a waterproof testing device for stage lights. Background Technology

[0002] With the booming development of the stage performance and entertainment industry, the market demand for waterproof stage lights continues to rise, and product types are becoming increasingly diversified. Stage light manufacturers face severe challenges in ensuring that the waterproof performance of their products meets design standards. Currently, the industry generally uses traditional testing methods such as water spraying or immersion for waterproof verification. Water spraying tests rely on customized spray equipment to simulate a rain environment, but due to uneven water flow distribution and limited spray angle, it cannot effectively cover all potential water seepage areas of the product, resulting in unreliable test results and a high risk of missed detections. Immersion tests require the product to be completely submerged in water for observation. While this provides a more comprehensive test, the process is time-consuming and requires tedious cleaning and drying afterward, making operation extremely inconvenient. These methods generally suffer from low testing efficiency and high manual labor intensity; the water spraying or immersion process consumes a large amount of water resources, resulting in resource waste; the working environment is constantly damp, making it difficult to maintain dry conditions, affecting operational safety and equipment maintenance; more seriously, if the product leaks during testing, internal electronic components are easily damaged, leading to product scrapping or additional repair costs. Therefore, the development of a testing device that can quickly, non-destructively, and reliably assess the waterproof performance of stage lights has become an urgent need in the industry. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a waterproof testing device for stage lights.

[0004] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0005] A waterproof testing device for stage lights includes a positive and negative pressure module housed within a device housing. The positive and negative pressure module is connected to a connection port for testing. The device housing contains a control switch for controlling the positive and negative pressure module to output positive or negative pressure from the connection port. The positive and negative pressure module includes an air pump. The air pump includes an inlet pipe and an outlet pipe. The inlet pipe is connected to one port of a first one-way valve and a second three-way solenoid valve via a first three-way connector. One end of the first one-way valve, facing away from the first three-way connector, is connected to one port of the first three-way solenoid valve. The other two ports of the first three-way solenoid valve are respectively connected to a first main pipe and the second one-way valve. The first main pipe is connected to the connection port. One end of the second one-way valve, facing away from the first three-way solenoid valve, is connected to one port of the second three-way solenoid valve and the outlet pipe via a second three-way connector. The other port of the second three-way solenoid valve is configured as an inlet / outlet.

[0006] In one embodiment of this utility model, the control switch includes a positive pressure switch and a negative pressure switch; the control switch is disposed on the positive and negative pressure modules; and a cover is rotatably connected to the equipment housing.

[0007] In one embodiment of this utility model, the positive and negative pressure module is provided with a display screen that displays the air pressure at the connection port.

[0008] In one embodiment of this utility model, a first filter and a digital pressure gauge are provided between the first main pipe and the connection port.

[0009] In one embodiment of this utility model, the first main pipeline is connected to a one-way pressure relief pipe and a first three-way solenoid valve respectively through a third three-way interface; the ventilation direction of the one-way pressure relief pipe is set to allow gas from the first three-way solenoid valve to enter the third three-way interface to flow into the one-way pressure relief pipe and then be discharged.

[0010] In one embodiment of the present invention, the ventilation direction of the first one-way valve is set to allow gas from the first three-way solenoid valve into the first one-way valve to flow into the first three-way port.

[0011] In one embodiment of the present invention, the air passage direction of the second one-way valve is configured to allow gas from the second three-way solenoid valve to enter the second one-way valve and then flow into the first three-way solenoid valve.

[0012] In one embodiment of this utility model, at least two ports of the first three-way solenoid valve and the second three-way solenoid valve can be opened and closed independently.

[0013] In one embodiment of this utility model, the second three-way solenoid valve is configured such that the inlet and outlet ports are connected to the silencer via a second filter; the second filter and the silencer allow gas to pass through in both directions.

[0014] In one embodiment of the present invention, the first three-way solenoid valve includes port 1, port 2, and port 3; port 1 is connected to the third three-way interface, port 2 is connected to the second one-way valve, and port 3 is connected to the first one-way valve; the second three-way solenoid valve includes port 4, port 5, and port 6; port 4 is connected to the second three-way interface, port 5 is connected to the first three-way interface, and port 6 is an air inlet / outlet.

[0015] When positive pressure detection is performed, port 3 of the first three-way solenoid valve is closed, port 4 of the second three-way solenoid valve is closed, external gas enters the second three-way solenoid valve through port 6 and is output from port 5. Further gas enters the intake pipe through the first three-way interface and is then drawn into the air pump, and is output from the outlet pipe. Further gas passes through the second three-way interface and the second check valve in sequence and enters the first three-way solenoid valve through port 2. Further gas is output through port 1 and enters the first main pipe, and is finally output from the connection port.

[0016] When negative pressure detection is performed, port 2 of the first three-way solenoid valve is closed, and port 5 of the second three-way solenoid valve is closed. External gas enters the first main pipeline through the connection port, and further gas enters the first three-way solenoid valve through port 1 and is output from port 3. Further gas enters the intake pipeline through the first one-way valve and the first three-way interface and is then drawn into the air pump, and is output from the outlet pipeline. Further gas enters the second three-way solenoid valve through port 4 after passing through the second three-way interface, and is finally output from port 6.

[0017] The beneficial effects of this utility model are: by setting positive and negative pressure modules and a multi-channel control structure, non-destructive and rapid testing of stage lights is achieved, which has the advantages of improving waterproof testing efficiency, reducing resource consumption, and ensuring equipment safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural view of the present invention;

[0020] Figure 2 This is a three-dimensional view of the positive and negative pressure module of this utility model;

[0021] Figure 3 This is a simplified circuit diagram of the positive pressure mode of this utility model;

[0022] Figure 4 This is a simplified circuit diagram of the negative pressure mode of this utility model;

[0023] Explanation of reference numerals in the attached figures:

[0024] 10. Equipment housing; 20. Control switch; 21. Positive pressure switch; 22. Negative pressure switch; 30. Display screen; 40. Connection port; 50. Cover; 100. Positive and negative pressure module; 110. Air pump; 111. Air inlet pipe; 112. Air outlet pipe; 120. First three-way connector; 130. First one-way valve; 140. First three-way solenoid valve; 150. First main pipe; 151. First filter; 152. Digital pressure gauge; 153. Third three-way connector; 154. One-way pressure relief pipe; 160. Second three-way solenoid valve; 161. Second filter; 162. Silencer; 170. Second three-way connector; 180. Second one-way valve; 190. Control main board. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] For an example, please refer to... Figure 1-4 As shown:

[0029] A waterproof testing device for stage lights includes a positive and negative pressure module 100 disposed inside a device housing 10; the positive and negative pressure module 100 is connected to a connection port 40 for testing; the device housing 10 is provided with a control switch 20 for controlling the positive and negative pressure module 100 to output positive or negative pressure from the connection port 40; the positive and negative pressure module 100 includes an air pump 110; the air pump 110 includes an air inlet pipe 111 and an air outlet pipe 112; the air inlet pipe 111 is connected to a port of a first one-way valve 130 and a second three-way solenoid valve 160 through a first three-way interface 120; The end of the first one-way valve 130 away from the first three-way interface 120 is connected to one port of the first three-way solenoid valve 140; the other two ports of the first three-way solenoid valve 140 are respectively connected to the first main pipe 150 and the second one-way valve 180; the first main pipe 150 is connected to the connection port 40; the end of the second one-way valve 180 away from the first three-way solenoid valve 140 is connected to one port of the second three-way solenoid valve 160 and the air outlet pipe 112 through the second three-way interface 170; the other port of the second three-way solenoid valve 160 is configured as an air inlet and outlet.

[0030] This technical solution achieves air pressure testing of the waterproof performance of stage lights by constructing a positive and negative pressure module 100 and a multi-channel air circuit control system. The positive and negative pressure module 100, as the core power source, can switch between positive pressure output and negative pressure extraction modes via a control switch 20, replacing the traditional physical testing method of water immersion. The air pump 110's inlet pipe 111 and outlet pipe 112 form a composite air circuit system through dual three-way solenoid valves and one-way valves. Switching the pressure input / output path is achieved by opening and closing different ports of the first three-way solenoid valve 140 and the second three-way solenoid valve 160 without changing the air pump 110's inlet and outlet paths, allowing the air pump 110 to achieve both positive pressure output and negative pressure intake effects under the same operating mode. This dual solenoid valve linkage design allows for precise control of gas flow. During positive pressure testing, gas enters through the inlet and outlet ports and is pressurized and delivered to the connection port 40 by the air pump 110; during negative pressure testing, air is extracted from the connection port 40 through different reverse paths. The first main pipeline 150 serves as the main pressure transmission channel, and its direct connection with the connection port 40 ensures that the detection pressure can effectively act on the measured object. A specially designed one-way valve assembly ensures the stability of the unidirectional airflow and enables rapid switching between positive and negative pressure modes through the opening and closing control of the solenoid valve port. Simultaneously, the coordination with the solenoid valve ensures the stability of the gas flow direction and prevents leakage. This technical solution replaces traditional physical contact detection with pressure change detection, fundamentally solving problems such as low detection efficiency, high resource consumption, and environmental damage. Furthermore, the modular gas path design ensures the controllability and repeatability of the detection process.

[0031] The stage lighting waterproof testing equipment achieves waterproof performance testing by constructing a positive and negative pressure module 100 and a multi-channel air circuit control system. The positive and negative pressure module 100 serves as a power source, and its output pressure mode switching is achieved through a control switch 20. This switch can be a mechanical lever switch or an electronic touch panel. The operator controls the module to output positive or negative pressure by triggering different command signals. The positive and negative pressure module 100 includes an air pump 110. The air pump 110's inlet pipe 111 and outlet pipe 112 form a composite air circuit system through a double three-way solenoid valve and a one-way valve. Specifically, the first three-way solenoid valve 140 and the second three-way solenoid valve 160 change the gas flow direction by combining port opening and closing. For example, the first three-way solenoid valve 140 can adopt an electromagnetically driven slide valve structure, with its three ports connected to the first main pipe 150, the first one-way valve 130, and the third three-way interface 153, respectively. The valve core position is controlled by the on / off state of the electromagnetic coil, realizing the conduction or cutoff of different channels.

[0032] In terms of gas path control, the first one-way valve 130 and the second one-way valve 180 form a one-way flow combination. The airflow direction of the first one-way valve 130 is set from the first three-way solenoid valve 140 to the first three-way port 120. This one-way valve can adopt a spring-return conical valve core structure or a diaphragm valve body to ensure that the gas flows only in a preset direction. The second one-way valve 180 is located between the first three-way solenoid valve 140 and the second three-way port 170. Its airflow direction allows gas to flow from the second three-way solenoid valve 160 into the first three-way solenoid valve 140. This valve body can be replaced with a ball valve or duckbill valve or other one-way flow elements, or use the same structure as the first one-way valve 130. This combination design of dual one-way valves and solenoid valves allows the air pump 110 to switch between positive pressure output and negative pressure extraction modes by switching the solenoid valve ports in a fixed operating mode.

[0033] In practical implementation, the first main pipeline 150 serves as the main pressure transmission channel. A quick-connect coupling or threaded interface can be installed in its connection path with the connecting port 40 to adapt to different specifications of stage light detection interfaces. The inlet and outlet ports of the second three-way solenoid valve 160 can be connected to a detachable silencer 162. This silencer 162 uses porous metal material or a ceramic filter element to reduce noise during gas emission. The inlet pipeline 111 and outlet pipeline 112 of the air pump 110 form branch paths through the first three-way interface 120 and the second three-way interface 170. A feedback channel is established between the first three-way interface 120 and the second three-way interface 170 through a second one-way valve 180. The conduction state of this feedback channel is controlled by the opening and closing of the solenoid valve port, thereby changing the working cycle path of the air pump 110.

[0034] The core innovation of this technical solution lies in the precise control of airflow direction achieved through a dual-solenoid valve linkage design. During positive pressure testing, external gas enters through the inlet and outlet of the second three-way solenoid valve 160, is pressurized by the air pump 110, and then transported along the first main pipeline 150 to the connection port 40. During negative pressure testing, the gas at connection port 40 enters the solenoid valve through the first main pipeline 150 and is then pumped out by the air pump 110. This pressure testing method replaces the traditional water-spraying and immersion method, detecting sealing performance through changes in air pressure, avoiding water consumption and the risk of damage to electronic components. Simultaneously, the modular air path design ensures the controllability and repeatability of the testing process.

[0035] The stage lighting waterproof testing equipment achieves waterproof performance testing by constructing a positive and negative pressure module 100 and a multi-channel air circuit control system. The positive and negative pressure module 100, installed inside the equipment housing 10, serves as the core power source and includes an air pump 110 and matching air inlet pipe 111 and air outlet pipe 112. The air inlet pipe 111 of the air pump 110 is connected to one port of a first one-way valve 130 and a second three-way solenoid valve 160 through a first three-way interface 120. The end of the first one-way valve 130 facing away from the first three-way interface 120 is connected to a port of the first three-way solenoid valve 140. The other two ports of the solenoid valve are connected to the first main pipe 150 and the second one-way valve 180, respectively. The first main pipe 150 is directly connected to the connection port 40, while the end of the second one-way valve 180 opposite to the first three-way solenoid valve 140 is connected to the port of the second three-way solenoid valve 160 and the air outlet pipe 112 through the second three-way interface 170. The other port of the second three-way solenoid valve 160 serves as the air inlet and outlet. The control switch 20 is located on the positive and negative pressure module 100, and the positive pressure switch 21 and the negative pressure switch 22 are switched to enable the connection port 40 to output positive or negative pressure.

[0036] In the specific implementation process, when positive pressure testing is performed, port 3 of the first three-way solenoid valve 140 and port 4 of the second three-way solenoid valve 160 are closed. External gas enters the second three-way solenoid valve 160 through the inlet and outlet ports, then sequentially passes through the second three-way interface 170 and the second one-way valve 180 into the first three-way solenoid valve 140, and is output through port 1 to the first main pipeline 150. Finally, positive pressure is applied to the stage light under test through the connection port 40. When negative pressure testing is performed, port 2 of the first three-way solenoid valve 140 and port 5 of the second three-way solenoid valve 160 are closed. Gas introduced through the connection port 40 enters port 1 of the first three-way solenoid valve 140 through the first main pipeline 150, and is output through port 3. It then enters the intake pipeline 111 through the first one-way valve 130 and the first three-way interface 120. After being pressurized by the air pump 110, it is discharged through the outlet pipeline 112 and the second three-way interface 170. During this process, the ventilation direction of the first one-way valve 130 is set to allow gas to flow from the first three-way solenoid valve 140 to the first three-way port 120, while the second one-way valve 180 ensures that gas flows into the first three-way solenoid valve 140 in one direction. The opening and closing control of the ports of the two solenoid valves realizes the precise switching of the airflow path.

[0037] This technical solution replaces the traditional water-spraying and immersion testing method with pressure variation, solving the problems of low testing efficiency, high resource consumption, and easy damage to electronic components. The dual-mode output function of the positive and negative pressure module 100, combined with the linkage design of the solenoid valve and the one-way valve, enables the same air pump 110 to achieve bidirectional functions of positive pressure output and negative pressure extraction without changing the air inlet and outlet paths. This simplifies the equipment structure and ensures the controllability and repeatability of the testing process. The direct connection between the first main pipeline 150 and the connection port 40 ensures that the pressure is effectively transmitted to the object being tested, while the independent opening and closing control of the solenoid valve port and the directional conduction characteristic of the one-way valve jointly ensure the stability of the air circuit system and avoid pressure fluctuations caused by gas backflow during the testing process. This modular air circuit design not only improves testing efficiency but also eliminates water consumption and environmental humidification problems through non-contact testing, while reducing product cleaning and maintenance costs.

[0038] In one embodiment of this utility model, the control switch 20 includes a positive pressure switch 21 and a negative pressure switch 22; the control switch 20 is disposed on the positive and negative pressure module 100; a cover 50 is rotatably connected to the equipment housing 10.

[0039] Among them, the positive pressure switch 21 and the negative pressure switch 22 refer to physical operating units used to independently control the pressure output mode. They can be implemented in parallel using push-button switches, toggle switches, or touch panels. This split design, by physically isolating the two switch units, can avoid signal interference during mode switching, allowing the operator to intuitively select the output pressure type through independent buttons. The control switch 20 is set on the positive and negative pressure module 100, which means that the operating unit is directly integrated into the surface of the module body. It can be implemented by welding, plug-in assembly, or embedded installation. It should be understood that the positive and negative pressure module 100 also includes a plate-like structure or connecting structure for mounting the control switch 20. This layout shortens the physical distance between the control unit and the actuator, reduces signal transmission delay, and facilitates power supply and data interaction of the switch through the module body. The rotating connecting cover 50 on the equipment housing 10 refers to a protective structure that can rotate and open around a fixed axis. It can be connected by mechanical means such as hinges or rotating shafts. When not in operation, the structure can form a sealed protection by closing the cover 50, which not only prevents dust from entering the chamber and affecting precision components, but also allows for convenient operation during testing by adjusting the opening and closing angle.

[0040] As a preferred embodiment, the solution of this application is implemented as follows: Both the positive pressure switch 21 and the negative pressure switch 22 are waterproof buttons with indicator lights, integrated on the operation panel at the top of the positive and negative pressure module 100. The cover 50 of the equipment housing 10 is connected to the housing through two limiting hinges, and when the cover 50 is closed, it forms a sealed structure with the housing through a latch. When debugging the equipment, the operator first opens the cover 50 to the working angle, and presses the positive pressure switch 21 or the negative pressure switch 22 respectively to test the pressure output status for further testing.

[0041] In one embodiment of this utility model, the positive and negative pressure module 100 is provided with a display screen 30 that displays the air pressure of the connection port 40.

[0042] The display screen 30 is a visual component used to display real-time air pressure values. It can be implemented using a digital LCD screen or an analog pointer instrument. The display screen 30 allows operators to monitor air pressure changes during the testing process in real time, ensuring that the positive or negative pressure remains within a preset range. When the air pump 110 malfunctions or a leak occurs in the pipeline, the display screen 30 can immediately report the abnormal value, facilitating rapid disconnection of the control switch 20 to protect the equipment. The direct connection between the display screen 30 and the connection port 40 also avoids measurement errors caused by pressure loss in intermediate pipelines, ensuring the accuracy of the test data.

[0043] Specifically, the display screen 30 is connected to a pressure sensor via an internal circuit. The pressure sensor is installed on the first main pipe 150 near the connection port 40. When the positive and negative pressure module 100 is activated, the pressure sensor collects the air pressure signal at the connection port 40 in real time and transmits the signal to the display screen 30 for digital display. In positive pressure detection mode, when the air pump 110 outputs positive pressure to the connection port 40, the display screen 30 dynamically displays the current air pressure value; in negative pressure detection mode, when the connection port 40 draws gas to form negative pressure, the display screen 30 also reflects the change in negative pressure value in real time. By observing the values ​​on the display screen 30, the operator can determine whether the preset detection pressure value has been reached and adjust the working state of the control switch 20 as needed. In one embodiment, the positive and negative pressure module 100 also includes a control main board 190, which can be used to control the opening and closing of the first three-way solenoid valve 140 and the second three-way solenoid valve 160.

[0044] In one embodiment of this utility model, a first filter 151 and a digital pressure gauge 152 are provided between the first main pipeline 150 and the connection port 40. The first filter 151 is an impurity blocking device installed in the gas transmission path. It can be implemented using a porous ceramic filter element, multi-layer sintered metal material, HEPA filter, activated carbon filter, or multi-layer fiber filter, etc., and its purpose is to remove dust, water mist, and other impurity particles from the gas through mechanical interception. It should be understood that the first filter 151 can allow bidirectional airflow, thereby ensuring unobstructed air passage. The first filter 151 should not impede the passage of gas while performing its basic filtration function. The digital pressure gauge 152 is a pressure monitoring component with digital sensing and display functions. It can be implemented based on piezoresistive, capacitive, or piezoelectric sensing principles, and its purpose is to convert the pressure value at the connection port 40 into a digital signal in real time and output it through the LCD screen 30. In one embodiment, the digital barometer 152 has a built-in display screen 30, and the display screen 30 on the digital barometer 152 is directly used as the display screen 30 set on the positive and negative pressure module 100.

[0045] Specifically, this technical solution establishes a dual-function "filtration-monitoring" module by connecting the first filter 151 and the digital pressure gauge 152 in series between the first main pipeline 150 and the connection port 40. When the positive pressure detection mode is activated, the gas pressurized by the air pump 110 first passes through the first filter 151 to remove impurities, then flows through the digital pressure gauge 152 for real-time pressure acquisition, and is finally delivered to the connection port 40. During negative pressure detection, when the gas in the tested cavity flows back through the connection port 40, it must first pass through the digital pressure gauge 152 for pressure measurement, and then be purified by the first filter 151 before entering the main pipeline. This dual protection mechanism ensures both the purity of the detected gas and enables dynamic and visual monitoring of pressure parameters.

[0046] In one embodiment of this utility model, the first main pipe 150 is connected to a one-way pressure relief pipe 154 and a first three-way solenoid valve 140 via a third three-way port 153. The ventilation direction of the one-way pressure relief pipe 154 is configured to allow gas flowing from the first three-way solenoid valve 140 into the third three-way port 153 to flow into the one-way pressure relief pipe 154 and then be discharged. The one-way pressure relief pipe 154 refers to a valve structure that allows gas to flow in a single direction. It can be implemented using conventional methods such as a spring-loaded valve core, a diaphragm-type one-way valve, or a gravity-driven valve disc. It can relieve some pressure during positive pressure detection to prevent excessive positive pressure and block during negative pressure detection to ensure smooth negative pressure flow.

[0047] In one embodiment of the present invention, the ventilation direction of the first one-way valve 130 is configured to allow gas from the first three-way solenoid valve 140 into the first one-way valve 130 to flow into the first three-way port 120.

[0048] The first one-way valve 130 refers to a valve structure that allows gas to flow in a single direction. It can be implemented using conventional methods such as a spring-loaded valve core, a diaphragm one-way valve, or a gravity-driven valve disc. The purpose of introducing this technical feature is to achieve precise control of the airflow path through mechanical structure design, ensuring that the gas flows in a preset direction in both positive and negative pressure detection modes, avoiding pressure loss or detection errors caused by gas backflow.

[0049] Specifically, during positive pressure detection, port 3 of the first three-way solenoid valve 140 is closed, and port 4 of the second three-way solenoid valve 160 is closed. External gas enters the second three-way solenoid valve 160 through the inlet and outlet ports, exits through port 5 to the first three-way interface 120, and is then drawn into the air pump 110. At this time, the ventilation direction of the first one-way valve 130 is set to prevent gas from entering the first three-way solenoid valve 140 in the reverse direction, forcing the gas to enter the air pump 110 through a preset intake path. During negative pressure detection, port 2 of the first three-way solenoid valve 140 is closed, and port 5 of the second three-way solenoid valve 160 is closed. External gas is input through connection port 40, enters port 1 through the first main pipeline 150, and exits through port 3. The first one-way valve 130 only allows gas to flow from the first three-way solenoid valve 140 through this valve to the first three-way interface 120, thereby ensuring that the gas enters the main pipeline along a preset path and is finally output.

[0050] In one embodiment of the present invention, the ventilation direction of the second one-way valve 180 is set to allow gas from the second three-way solenoid valve 160 to enter the second one-way valve 180 and then flow into the first three-way solenoid valve 140.

[0051] The second check valve 180 is a control element that allows gas to flow only in a specific direction. It can be implemented using a spring-return check valve, a diaphragm check valve, or an electromagnetically driven check valve. Specifically, the purpose of this ventilation direction design is to ensure that the gas always flows unidirectionally along a preset path during positive pressure detection, avoiding pressure fluctuations and energy losses caused by backflow.

[0052] Specifically, during positive pressure testing, the compressed gas output from the air pump 110 enters the second three-way port 170 through the outlet pipe 112. At this time, the ventilation direction design of the second one-way valve 180 allows the gas to flow unimpeded into the second three-way solenoid valve 160. During this process, the second one-way valve 180 and the first three-way solenoid valve 140 are linked: when the second three-way solenoid valve 160 switches to the positive pressure operating state, the gas is guided through the second one-way valve 180 into the first three-way solenoid valve 140, and finally outputs stable positive pressure to the connection port 40 through the first main pipe 150. This structural design prevents compressed gas from reversing into the air pump 110 outlet pipe 112 and causing equipment malfunctions, and also avoids pressure fluctuations caused by backflow vortices in the pipeline.

[0053] In one embodiment of this invention, at least two ports of the first three-way solenoid valve 140 and the second three-way solenoid valve 160 can be opened and closed independently. The first three-way solenoid valve 140 refers to an electromagnetic control valve with three ports, at least two of which have independent opening and closing capabilities, specifically achieved through an independent valve core structure driven by an electromagnetic coil. Similarly, the second three-way solenoid valve 160's independent port control characteristics can be achieved through a multi-channel electromagnetic drive module. This design aims to eliminate mechanical linkage constraints between ports, providing precise directional control for the gas path.

[0054] Specifically, by giving the solenoid valve ports independent control capabilities, during positive pressure detection, port 3 of the first three-way solenoid valve 140 can be precisely closed to block the negative pressure circuit while maintaining unidirectional flow of positive pressure gas; during negative pressure detection, port 5 of the second three-way solenoid valve 160 is closed to isolate external airflow interference, ensuring a stable negative pressure environment in the detection chamber. This independent control mechanism creates physically isolated independent channels for positive pressure inflation and negative pressure evacuation processes, avoiding gas backflow problems and improving the response speed during pressure switching.

[0055] In one embodiment of the present invention, the second three-way solenoid valve 160 is configured such that the inlet and outlet ports are connected to the silencer 162 via the second filter 161; the second filter 161 and the silencer 162 allow bidirectional flow of operating gas.

[0056] The second filter 161 is a filter component used to intercept impurities in the gas. Its purpose is to remove dust particles from the air through physical blocking or adsorption, preventing impurities from entering core components such as the air pump 110 and solenoid valve, causing wear or blockage. The silencer 162 is an acoustic device used to reduce airflow noise. It can be implemented using a resistive silencer 162 with a sound-absorbing material filling structure or a reactive silencer 162 with a resonant cavity structure. Its purpose is to attenuate the turbulent noise generated by high-speed airflow through sound energy absorption or sound wave interference principles, thereby reducing acoustic pollution during equipment operation. The bidirectional passage characteristic means that both the second filter 161 and the silencer 162 have the ability to allow gas to flow freely in both positive pressure intake and negative pressure exhaust directions. Its purpose is to maintain the permeability of the air path system and avoid affecting the switching efficiency of the positive and negative pressure modules 100 due to airflow resistance imbalance caused by unidirectional setting.

[0057] Specifically, this technical solution establishes a dual protection mechanism by incorporating a composite structure of a second filter 161 and a silencer 162 at the inlet and outlet ports of the second three-way solenoid valve 160. When the positive pressure detection mode is activated, external gas passes through the second filter 161 and enters the silencer 162. The sound-absorbing material converts the high-frequency noise energy generated by the airflow impact into heat energy, and the purified gas enters the air pump 110 system at a stable flow rate. When the negative pressure detection mode is activated, the gas being pumped carries potential impurities and flows back through the silencer 162. At this time, the second filter 161 performs secondary interception of particles in the returning gas, while the silencer 162 further suppresses low-frequency vibration noise during the pumping process. This integrated design of bidirectional filtration and silencing ensures both the cleanliness of the air path system and achieves noise control under all operating conditions.

[0058] This application further proposes a specific control scheme for the positive and negative pressure module 100, including:

[0059] The first three-way solenoid valve 140 includes ports 1, 2, and 3; port 1 is connected to the third three-way interface 153, port 2 is connected to the second one-way valve 180, and port 3 is connected to the first one-way valve 130; the second three-way solenoid valve 160 includes ports 4, 5, and 6; port 4 is connected to the second three-way interface 170, port 5 is connected to the first three-way interface 120, and port 6 is an inlet and outlet port;

[0060] When positive pressure detection is performed, port 3 of the first three-way solenoid valve 140 is closed, port 4 of the second three-way solenoid valve 160 is closed, external gas enters the second three-way solenoid valve 160 through port 6 and is output from port 5. Further gas enters the intake pipe 111 through the first three-way interface 120 and is then drawn into the air pump 110, and is output from the outlet pipe 112. Further gas passes through the second three-way interface 170 and the second one-way valve 180 in sequence and enters the first three-way solenoid valve 140 through port 2. Further gas is output through port 1 and enters the first main pipe 150, and is finally output from the connection port 40.

[0061] When negative pressure detection is performed, port 2 of the first three-way solenoid valve 140 is closed, and port 5 of the second three-way solenoid valve 160 is closed. External gas enters the first main pipeline 150 through connection port 40. Further gas enters the first three-way solenoid valve 140 through port 1 and is output from port 3. Further gas enters the intake pipeline through the first one-way valve 130 and the first three-way interface 120 and is then drawn into the air pump 110, and is output from the outlet pipeline 112. Further gas enters the second three-way solenoid valve 160 through port 4 after passing through the second three-way interface 170, and is finally output from port 6.

[0062] Among them, the first three-way solenoid valve 140 refers to an electromagnetic control valve with three gas channels, which can be implemented by a proportional solenoid valve or an on / off solenoid valve. Its purpose is to achieve precise switching of gas flow direction through independent opening and closing control of the ports. The second three-way solenoid valve 160 refers to a bidirectional control valve with three gas channels, which can be implemented by a solenoid valve with a bidirectional sealing structure. Its purpose is to ensure that the gas maintains pressure stability when flowing bidirectionally in both directions at the inlet and outlet. The port configuration refers to the physical connection relationship between the ports of the solenoid valve, which can be implemented by flange connection or quick-connect coupling. Its purpose is to create a reusable and resealable gas channel.

[0063] Specifically, this scheme forms a bidirectional linkage structure through a specific combination of solenoid valve ports. When positive pressure detection is activated, the closing action of ports 3 and 4 creates a unidirectional pressurization channel: external gas flows through port 6 → port 5 → first tee port 120 → inlet pipe 111 → air pump 110 → outlet pipe 112 → second tee port 170 → second check valve 180 → port 2 → port 1 → first main pipe 150 → connecting port 40. This step-by-step series path design ensures the uniqueness of the gas flow direction and avoids pressure attenuation caused by backflow. In negative pressure detection mode, the closure of ports 2 and 5 creates a reverse suction channel: the exhaust path connects port 40 → first main pipe 150 → port 1 → port 3 → first one-way valve 130 → first three-way connector 120 → inlet pipe 111 → air pump 110 → outlet pipe 112 → second three-way connector 170 → port 4 → port 6. This path design ensures suction efficiency while preventing gas backflow through the cooperation of the one-way valves. It is particularly noteworthy that the port combination of the two solenoid valves achieves dynamic separation between the positive pressure boosting zone and the negative pressure suction zone through physical isolation. This structural design allows for gas path reconstruction without additional mechanical adjustments during mode switching.

[0064] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A stage light waterproof detection device, characterized in that: The device includes a positive and negative pressure module (100) installed inside a housing (10); the positive and negative pressure module (100) is connected to a connection port (40) for detection; the housing (10) is equipped with a control switch (20) for controlling the positive and negative pressure module (100) to output positive or negative pressure from the connection port (40); the positive and negative pressure module (100) includes an air pump (110); the air pump (110) includes an inlet pipe (111) and an outlet pipe (112); the inlet pipe (111) is connected to one port of a first one-way valve (130) and a second three-way solenoid valve (160) through a first three-way interface (120); the first one-way valve (130) is connected to one port of a first one-way valve (130) and a second three-way solenoid valve (160); the first one-way valve (130) is connected to a connection port (40) for detection; the first one-way valve (130) is connected to a connection port (40) for detection; the first one-way valve (14 ... One end of a check valve (130) away from the first three-way interface (120) is connected to one port of the first three-way solenoid valve (140); the other two ports of the first three-way solenoid valve (140) are respectively connected to the first main pipeline (150) and the second check valve (180); the first main pipeline (150) is connected to the connection port (40); one end of the second check valve (180) away from the first three-way solenoid valve (140) is connected to one port of the second three-way solenoid valve (160) and the air outlet pipeline (112) through the second three-way interface (170); the other port of the second three-way solenoid valve (160) is configured as an inlet and outlet.

2. The stage lamp waterproof detection device according to claim 1, characterized in that: The control switch (20) includes a positive pressure switch (21) and a negative pressure switch (22); the control switch (20) is mounted on the positive and negative pressure module (100); a cover (50) is rotatably connected to the equipment housing (10).

3. The stage lamp waterproof detection device according to claim 1, characterized in that: The positive and negative pressure module (100) is equipped with a display screen (30) that displays the air pressure of the connection port (40).

4. The stage lamp waterproof detection device according to claim 1, characterized in that: A first filter (151) and a digital pressure gauge (152) are provided between the first main pipe (150) and the connection port (40).

5. The stage lamp waterproof detection device according to claim 1, characterized in that: The first main pipe (150) is connected to the one-way pressure relief pipe (154) and the first three-way solenoid valve (140) respectively through the third three-way interface (153); the ventilation direction of the one-way pressure relief pipe (154) is set to allow gas from the first three-way solenoid valve (140) to enter the third three-way interface (153) to flow into the one-way pressure relief pipe (154) and then be discharged.

6. The stage lamp waterproof detection device according to claim 1, characterized in that: The ventilation direction of the first check valve (130) is set to allow gas from the first three-way solenoid valve (140) to enter the first check valve (130) to flow into the first three-way port (120).

7. The stage lamp waterproof detection device according to claim 1, characterized in that: The ventilation direction of the second check valve (180) is set to allow gas from the second three-way solenoid valve (160) to enter the second check valve (180) and then flow into the first three-way solenoid valve (140).

8. The stage lamp waterproof detection device according to claim 1, characterized in that: At least two ports of the first three-way solenoid valve (140) and the second three-way solenoid valve (160) can be opened and closed independently.

9. The stage lamp waterproof detection device according to claim 1, characterized in that: The second three-way solenoid valve (160) is configured such that the inlet and outlet ports are connected to the silencer (162) via the second filter (161); the second filter (161) and the silencer (162) allow gas to pass through in both directions.

10. The stage lamp waterproof detection device according to any one of claims 1-9, characterized in that: The first three-way solenoid valve (140) includes port 1, port 2, and port 3; port 1 is connected to the third three-way interface (153), port 2 is connected to the second one-way valve (180), and port 3 is connected to the first one-way valve (130); the second three-way solenoid valve (160) includes port 4, port 5, and port 6; port 4 is connected to the second three-way interface (170), port 5 is connected to the first three-way interface (120), and port 6 is an air inlet / outlet. When positive pressure detection is performed, port 3 of the first three-way solenoid valve (140) is closed, port 4 of the second three-way solenoid valve (160) is closed, external gas enters the second three-way solenoid valve (160) through port 6 and is output from port 5. Further gas enters the intake pipe (111) through the first three-way interface (120) and is then drawn into the air pump (110), and is output from the outlet pipe (112). Further gas passes through the second three-way interface (170) and the second one-way valve (180) in sequence and enters the first three-way solenoid valve (140) from port 2. Further gas is output from port 1 and enters the first main pipe (150), and is finally output from the connection port (40). When negative pressure detection is performed, port 2 of the first three-way solenoid valve (140) is closed, and port 5 of the second three-way solenoid valve (160) is closed. External gas enters the first main pipeline (150) through the connection port (40). Further gas enters the first three-way solenoid valve (140) through port 1 and is output from port 3. Further gas enters the suction pipeline through the first one-way valve (130) and the first three-way interface (120) and is then drawn into the air pump (110) and output from the outlet pipeline (112). Further gas enters the second three-way solenoid valve (160) through port 4 after passing through the second three-way interface (170) and is finally output from port 6.

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