Liquid level switch testing device

Abstract

An embodiment of the utility model discloses a liquid level switch testing device which comprises a fixing assembly, a driving assembly and a clamping assembly, the driving assembly is arranged on the fixing assembly, a rotating space is arranged on the fixing assembly, the driving assembly comprises a driving piece and a driving shaft connected with the driving piece, and the clamping assembly is arranged on the driving piece. The driving shaft is located in the rotating space, and the clamping assembly is arranged on the driving shaft and used for fixing a liquid level switch; the driving part can drive the driving shaft to rotate so as to drive the clamping assembly to rotate in the rotating space. According to the utility model, the liquid level switch is fixed through the clamping assembly, and the rotation test is carried out in the rotation space, so that the test condition of the liquid level switch can be quickly obtained, and the abnormal liquid level switch can be screened out.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a liquid level switch testing device. Background Art

[0002] In the prior art, the liquid level switch is a key component in an air conditioner unit. The liquid level switch is mainly used to monitor the water level of the condensed water accumulated in the air conditioner unit, and at the same time, it can control the on-off of the circuit to start or stop the air conditioner unit. Under normal working conditions, the liquid level switch remains in a conducting state; when the water level of the condensed water in the air conditioner unit reaches a preset limit level, the liquid level switch will disconnect the contacts in the air conditioner unit, causing the air conditioner unit to stop operating. However, there is a defect in the prior art: if the water level of the condensed water in the air conditioner unit reaches the height at which it should stop, but the liquid level switch is damaged and fails to disconnect effectively, this will cause the condensed water in the water receiving tray of the air conditioner unit to overflow. This will not only cause the air conditioner unit to leak water, but also pose a safety hazard. Therefore, the service life and reliability of the liquid level switch are crucial, but there is no device in the prior art that can perform a quick on-off test on the liquid level switch when it leaves the factory. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a liquid level switch testing device, aiming to solve the problem that there is no device in the prior art for quickly testing the on-off of the liquid level switch when it leaves the factory.

[0004] To solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions: A liquid level switch testing device is provided, including a fixing component, a driving component, and a clamping component. The driving component is arranged on the fixing component. A rotating space is provided on the fixing component. The driving component includes a driving member and a driving shaft connected to the driving member. The driving shaft is located in the rotating space. The clamping component is arranged on the driving shaft and is used for fixing the liquid level switch. The driving member can drive the driving shaft to rotate, so as to drive the clamping component to rotate in the rotating space.

[0005] Further, the clamping component includes a clamping bracket and a clamping piece. The liquid level switch is arranged on the clamping piece. The clamping bracket is provided with a clamping space. The driving shaft is clamped in the clamping space. A sliding groove and an elastic buckle are arranged on the clamping piece. The clamping bracket can slide on the sliding groove. A limiting groove is arranged on the clamping bracket. The limiting groove is used for clamping with the elastic buckle when the clamping bracket slides into the sliding groove.

[0006] Further, along the sliding direction of the clamping bracket sliding into the sliding groove, the sliding groove is located in front of the elastic buckle.

[0007] Further, the elastic buckle is provided with an inclined portion, and one end of the inclined portion close to the chute is higher than the end far from the chute;

[0008] Further, the rotation angle range of the drive shaft is greater than or equal to 180 degrees;

[0009] Further, a plurality of the clamping assemblies are arranged side by side on the drive shaft;

[0010] Further, a needle seat plate is arranged on the fixing assembly, and the needle seat plate is connected to the liquid level switch through a needle seat connector;

[0011] Further, the fixing assembly includes a test area and a central control area. The rotation space is arranged in the test area. One end of the drive shaft is connected to the side of the test area far from the central control area, and the other end is connected to the side of the central control area close to the test area;

[0012] Further, a central control platform is arranged in the central control area. The central control platform includes a control module and a display module arranged on the surface of the central control platform. The display module and the driving member are both connected to the control module;

[0013] Further, the central control platform further includes an alarm module connected to the control module.

[0014] An embodiment of the present invention provides a liquid level switch testing device, including a fixing assembly, a driving assembly, and a clamping assembly. The driving assembly is arranged on the fixing assembly. A rotation space is provided on the fixing assembly. The driving assembly includes a driving member and a drive shaft connected to the driving member. The drive shaft is located in the rotation space. The clamping assembly is arranged on the drive shaft and is used for fixing the liquid level switch; the driving member can drive the drive shaft to rotate so as to drive the clamping assembly to rotate in the rotation space. The present invention fixes the liquid level switch through the clamping assembly and performs a rotation test in the rotation space. In this way, the test situation of the liquid level switch can be quickly obtained, and abnormal liquid level switches can be screened out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a liquid level switch testing device provided by an embodiment of the present invention;

[0017] Figure 2 Structural schematic diagram of the clamping assembly and the driving assembly provided by an embodiment of the present utility model;

[0018] Figure 3 For Figure 2 Enlarged view of part A in

[0019] Figure 4 Structural schematic of the clamping assembly provided by an embodiment of the present utility model Figure 1 ;

[0020] Figure 5 Structural schematic of the clamping assembly provided by an embodiment of the present utility model Figure 2 ;

[0021] Figure 6 For Figure 5 Cross-sectional view taken along B-B in

[0022] Explanation of the markings in the figure:

[0023] 10. Fixing assembly; 11. Needle seat plate; 111. Connection port; 12. Central control platform;

[0024] 20. Driving assembly; 21. Driving member; 22. Driving shaft;

[0025] 30. Clamping assembly; 31. Clamping bracket; 311. Limiting groove; 32. Clamping member; 321. Sliding groove; 322. Elastic buckle; 3221. Inclined portion;

[0026] 40. Rotating space. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0029] It should also be understood that the terms used in the description of the present utility model herein are merely for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the description of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0030] It should be further understood that the term "and / or" used in the description of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] Combined with Figures 1 to 3 As shown, the embodiment of the present utility model provides a liquid level switch testing device, which includes a fixing component 10, a driving component 20 and a clamping component 30. The driving component 20 is arranged on the fixing component 10. A rotating space 40 is provided on the fixing component 10. The driving component 20 includes a driving member 21 and a driving shaft 22 connected to the driving member 21. The driving shaft 22 is located in the rotating space 40. The clamping component 30 is arranged on the driving shaft 22 and is used to fix the liquid level switch; the driving member 21 can drive the driving shaft 22 to rotate so as to drive the clamping component 30 to rotate in the rotating space 40.

[0032] In this embodiment, the driving component 20 and the clamping component 30 are arranged on the fixing component 10. The clamping component 30 can fix the liquid level switch and rotate under the drive of the driving component 20 to simulate the actual operation mode of the liquid level switch in the air conditioner. The clamping component 30 can fix and clamp the liquid level switch to the driving shaft 22 of the driving component 20. Through this setting, the driving member 21 drives the driving shaft 22 to rotate, and the liquid level switch on the clamping component 30 rotates up and down with the driving shaft 22. The floating ball of the liquid level switch moves back and forth up and down on its connecting rod main shaft, thereby simulating the change of the liquid level. This displacement change enables the floating ball of the liquid level switch to realize its function through automatic on-off, and tests the response performance and service life of the liquid level switch by simulating the change of the liquid level in the actual use environment.

[0033] Combined with Figure 4 and Figure 5 As shown, in an embodiment, the clamping component 30 includes a clamping bracket 31 and a clamping member 32. The liquid level switch is arranged on the clamping member 32. The clamping bracket 31 is provided with a clamping space. The driving shaft 22 is clamped in the clamping space. A sliding groove 321 and an elastic buckle 322 are arranged on the clamping member 32. The clamping bracket 31 can slide on the sliding groove 321. A limiting groove 311 is arranged on the clamping bracket 31. The limiting groove 311 is used for clamping with the elastic buckle 322 when the clamping bracket 31 slides into the sliding groove 321.

[0034] In this embodiment, a clamping space is provided on the clamping bracket 31 for installing and fixing the drive shaft 22. The clamping member 32 is installed on the clamping bracket 31. The clamping member 32 is designed with a sliding groove 321 and an elastic buckle 322. The sliding groove 321 is located on the clamping member 32 and provides a guiding function for the sliding of the clamping bracket 31. The clamping bracket 31 can move along the sliding groove 321 on the clamping member 32 during installation or adjustment. In this way, the position of the liquid level switch can be adjusted to facilitate the positioning of the liquid level switch. The elastic buckle 322 can be used in cooperation with the sliding groove 321 to ensure that the clamping bracket 31 is locked in place. A limiting groove 311 is provided on the clamping bracket 31, and its main function is to cooperate with the elastic buckle 322. When the clamping bracket 31 slides along the sliding groove 321 to an appropriate position, the limiting groove 311 is engaged with the elastic buckle 322, thereby fixing the clamping bracket 31 in the current position. This clamping mechanism not only enhances the stability of the clamping assembly 30 but also ensures the accurate positioning of the liquid level switch during the test process.

[0035] In one embodiment, along the sliding direction of the clamping bracket 31 sliding into the sliding groove 321, the sliding groove 321 is located in front of the elastic buckle 322.

[0036] In this embodiment, the sliding groove 321 is arranged along the sliding direction of the clamping bracket 31, and the sliding groove 321 is located in front of the elastic buckle 322 (i.e., the direction of forward sliding). The elastic buckle 322 is arranged behind the sliding groove 321 as the final locking mechanism. When the clamping bracket 31 slides to the proper position along the sliding groove 321, the elastic buckle 322 will automatically snap into the limiting groove 311, thereby fixing the position of the clamping bracket 31 and ensuring the correct test posture of the liquid level switch.

[0037] When the test is about to start, the operator installs the liquid level switch on the clamping member 32 and then pushes the clamping bracket 31 forward. As the clamping bracket 31 slides, the clamping bracket 31 is first guided by the sliding groove 321 to ensure that the clamping bracket 31 can slide smoothly and accurately to the predetermined position. After the clamping bracket 31 reaches the predetermined position, the elastic buckle 322 will be engaged with the limiting groove 311 on the clamping bracket 31. The elastic buckle 322 is designed to provide a quick and safe locking function. The elastic buckle 322 has elasticity and can adapt to different sizes or minor position errors to ensure that the clamping bracket 31 is firmly locked in place.

[0038] Combined with Figure 6 As shown, in one embodiment, the elastic buckle 322 is provided with an inclined portion 3221, and the end of the inclined portion 3221 close to the sliding groove 321 is higher than the end away from the sliding groove 321.

[0039] In this embodiment, the elastic buckle 322 is used to ensure that the clamping bracket 31 is locked in an appropriate position, and the elastic buckle 322 has an inclined portion 3221. The inclined portion 3221 is designed to be inclined, and one end of the inclined portion 3221 is closer to the slide slot 321 than the other end away from the slide slot 321. Figure 6 As shown, the elastic buckle 322 is generally triangular in shape when viewed from the side. This design allows the inclined portion 3221 to provide a smooth introduction angle when the clamping bracket 31 slides into place along the slide groove 321 .

[0040] When the operator pushes the clamping bracket 31 along the slide groove 321, the clamping bracket 31 first contacts the lower end of the inclined portion 3221. Due to the design of the inclined portion 3221, the clamping bracket 31 will not be stuck when contacting the elastic buckle 322, but will use the elastic deformation of the elastic buckle 322 to gradually move along the inclined portion 3221 while pressing down the elastic buckle 322, which helps to reduce the physical resistance encountered during clamping.

[0041] As the clamping bracket 31 continues to slide forward, the clamping bracket 31 will slide to the higher end along the inclined portion 3221. At this time, the elastic buckle 322 is pressed downward due to the internal elastic design. When the elastic buckle 322 is aligned with the limit groove 311 on the clamping bracket 31, it will recover and protrude upward, and firmly engage with the limit groove 311 on the clamping bracket 31. This locking point ensures the stability of the clamping bracket 31, thereby ensuring the correct alignment and fixation of the liquid level switch during testing.

[0042] In addition, when the clamping bracket 31 needs to be unlocked to remove or reposition the liquid level switch, the elastic buckle 322 can be lightly pressed to retract the elastic buckle 322 from the limiting groove 311, so that the clamping bracket 31 can be moved as a whole to release the lock.

[0043] In one embodiment, the rotation angle range of the driving shaft 22 is greater than or equal to 180 degrees.

[0044] In this embodiment, the drive shaft 22 in the liquid level switch test device can be designed to allow a rotation angle range greater than or equal to 180 degrees. This enables the liquid level switch test device to evaluate the performance of the liquid level switch by detecting the operating angle through a 180-degree rotation. The rotation of the drive shaft 22 is controlled by the drive member 21, which is usually connected to a single-chip microcomputer (such as a 51 single-chip microcomputer) and receives instructions from the single-chip microcomputer to achieve rotation control of the drive shaft 22. This 180-degree rotation angle enables the liquid level switch to operate at different angles during testing, and can detect the functional integrity of the liquid level switch.

[0045] In particular, the liquid level switch testing device can also detect whether the float of the liquid level switch gets stuck during the test rotation process, and whether the clamping assembly 30 fits accurately with the connecting rod main shaft of the liquid level switch.

[0046] Furthermore, the liquid level switch testing device can also detect the conversion reliability of the magnetic attraction conduction signal in the liquid level switch. Since the float of the liquid level switch may come into contact with the magnetic part of the liquid level switch testing device during the rotation process, the liquid level switch testing device can verify whether the magnetic attraction can conduct or disconnect the circuit at a predetermined angular position through detections at different angles, thereby evaluating the electrical performance of the liquid level switch.

[0047] In one embodiment, a plurality of clamping assemblies 30 are arranged side by side on the drive shaft 22.

[0048] In this embodiment, a plurality of clamping assemblies 30 can be provided on the liquid level switch testing device to support batch testing, improving the testing efficiency and the utilization rate of the liquid level switch testing device. The liquid level switch testing device usually has two testing modes: the full inspection mode and the life detection mode. Users can freely switch between these two testing modes according to their needs. The full inspection mode is mainly used for rapid full inspection during batch production, and can quickly identify non-conforming products in the manufacturing batch. The life detection mode, through reciprocating on-off tests, simulates the switch actions during long-term use to evaluate the expected service life of the liquid level switch.

[0049] Each clamping assembly 30 can perform real-time parameter monitoring on the liquid level switch installed therein, including key operation parameters such as the number of on-off cycles and the operating time. These data will be automatically recorded and stored without manual intervention. This not only facilitates the extraction and application of data, but also enhances the data traceability ability, providing strong data support for quality control and risk management. By adopting this efficient and automated liquid level switch testing device, the R & D cost is reduced compared with traditional methods. This improvement in cost-effectiveness is mainly attributed to the side-by-side arrangement of a plurality of clamping assemblies 30. This layout not only improves the utilization rate of the testing stations, but also reduces the testing cost per unit product.

[0050] In one embodiment, a needle seat plate 11 is provided on the fixing assembly 10, and the needle seat plate 11 is connected to the liquid level switch through a needle seat connector.

[0051] In this embodiment, the fixing component 10 is generally an integral framework, which is composed of a base, a needle base plate 11 and a plurality of cover plates. The fixing component 10 is usually made of bakelite to ensure the stability and durability of the overall structure. Bakelite has excellent electrical insulation performance and mechanical strength, and is suitable for being used as the structural material of the fixing component 10. The needle base plate 11 is located on the fixing component 10, and a plurality of connection ports 111 are opened on the needle base plate 11. During use, it is connected to the liquid level switch through a needle base connector, that is, one end of the needle base connector is connected to the connection port 111, and the other end of the needle base connector is connected to the liquid level switch. Usually, one needle base connector corresponds to one liquid level switch and one connection port 111.

[0052] The function of the needle base connector is to ensure the electrical connection between the liquid level switch and the connection port 111, so as to facilitate the feedback of the data obtained from the test of the liquid level switch through the connection port 111 (that is, the connection port 111 is connected to the control module in the liquid level switch test device, and the control module can receive the data fed back by the connection port 111).

[0053] Specifically, at the start of the test, the liquid level switch is installed on the liquid level switch test device in an inverted state, and the floating ball of the liquid level switch is located at the upper limit point. At this time, the liquid level switch is in the off state. Through the control of the driving member 21 (such as a synchronous motor), the liquid level switch is rotated 180 degrees to the upright state through the driving shaft 22. In the upright state, the floating ball of the liquid level switch moves to the lower limit point, and at this time the liquid level switch turns to the on state. During the test, the needle base connector continuously receives the test data of the liquid level switch and transmits it to the corresponding connection port 111 on the needle base plate 11.

[0054] In one embodiment, the fixing component 10 includes a test area and a central control area. The rotating space 40 is arranged in the test area. One end of the driving shaft 22 is connected to the side of the test area away from the central control area, and the other end is connected to the side of the central control area close to the test area.

[0055] Furthermore, a central control platform 12 is arranged in the central control area. The central control platform 12 includes a control module and a display module arranged on the surface of the central control platform 12. The display module and the driving member 21 are both connected to the control module.

[0056] Furthermore, the central control platform 12 further includes an alarm module connected to the control module.

[0057] In this embodiment, the fixed component 10 can be divided into a test area and a central control area. The test area is provided with a rotation space 40, and a drive shaft 22 connected to the test area at one end and the central control area at the other end. The central control area is provided with a central control platform, which includes a control module and a display module. The control module (usually a PLC module, the same below) is responsible for the logic control and instruction distribution of the entire liquid level switch test device, while the display module provides an intuitive operating interface, such as a liquid crystal touch screen. The alarm module includes a display light and a buzzer. The display light can switch colors according to different test conditions, such as red, green, etc., and the buzzer can emit different alarm sounds according to different test conditions.

[0058] Furthermore, the operator can set the test times, start, reset, and pause of the liquid level switch through the display module, and view the current operation times and historical fault data. The alarm module is connected to the control module to provide sound and light alarms when a fault is detected or a test task is completed, thereby improving the safety of the equipment and the response efficiency of the user.

[0059] During use, the user selects the detection mode (full detection mode or life detection mode) through the display module and sets the relevant parameters. After clicking "Start", the PLC module controls the driver 21 to drive the drive shaft 22 to rotate, thereby driving the liquid level switch to rotate. The on-off state changes are monitored by the internal current detection circuit, and automatically recorded and transmitted to the control module. If an on-off fault is detected, the system automatically shuts down, and an audible and visual alarm is issued through the alarm module, and the specific fault position and cause are indicated on the display module. After completing the set number of tests, the system automatically shuts down, the display module prompts that the test task is completed, and the corresponding display light shows green, indicating that the detection record is qualified (if unqualified, the display light shows red). Of course, during the test process, if the parameters set by the user exceed the set range, the control module can also automatically identify and judge, and control the alarm module to issue an audible and visual alarm reminder.

[0060] Furthermore, the control module can automatically record the number of tests and product information to ensure that the test history of each product in the production process is stored, which is convenient for quality control and data traceability. During the test process, if any product fails in the on-off test, the level switch test device will automatically shut down and sound an alarm. This function realizes the monitoring of the whole process, ensuring that the problems can be dealt with in time, thereby improving the production quality. The level switch test device can monitor the test parameters of each level switch in real time to ensure that all parameters are within the predetermined range during the test. All test data are automatically stored in the built-in storage unit of the control module, without the need for manual transcription, reducing the possibility of human error and greatly improving the efficiency of data processing.

[0061] In addition, the liquid level switch testing device of the present utility model can improve the detection efficiency of the liquid level switch and reduce the time for post-test processing. The liquid level switch testing device is particularly suitable for large-scale production environments. The liquid level switch testing device adopts a multi-station rotary structure (i.e., multiple clamping components 30), allowing simultaneous testing of the on-off states of multiple liquid level switches. This design effectively improves the parallelism and efficiency of the testing process and reduces the waiting time of a single device.

[0062] The liquid level switch testing device can test the on-off function of the liquid level switch in a completely dry state. This feature overcomes the subsequent drying and drying steps required for testing with water in traditional liquid level detection, thereby reducing the complexity and time consumption in the production process. The completion time for a single test of the liquid level switch testing device is only within 5 seconds, which enables the liquid level switch testing device to quickly complete the detection of a large number of products. The liquid level switches that have completed the detection can be directly packaged and shipped without the need for drying or other treatments after traditional water inspection, significantly improving the overall production efficiency.

[0063] Specifically, before the test starts, the operator installs the liquid level switch in the designated position. After starting the test program, the liquid level switch testing device automatically rotates to drive all liquid level switches for synchronous testing. Each liquid level switch will complete the detection of the on-off state within 5 seconds, and the test results will be fed back to the control module. The products that pass the test will directly enter the shipping process without additional processing.

[0064] As described above, the above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A liquid level switch testing device, characterized in that, It includes a fixed component, a driving component and a clamping component. The driving component is arranged on the fixed component. A rotating space is provided on the fixed component. The driving component includes a driving member and a driving shaft connected to the driving member. The driving shaft is located in the rotating space. The clamping component is arranged on the driving shaft and is used for fixing the liquid level switch. The driving member can drive the driving shaft to rotate so as to drive the clamping component to rotate in the rotating space.

2. The liquid level switch testing device according to claim 1, wherein The clamping component includes a clamping bracket and a clamping piece. The liquid level switch is arranged on the clamping piece. The clamping bracket is provided with a clamping space. The driving shaft is clamped in the clamping space. A sliding groove and an elastic buckle are arranged on the clamping piece. The clamping bracket can slide on the sliding groove. A limiting groove is arranged on the clamping bracket. The limiting groove is used for clamping and connecting with the elastic buckle when the clamping bracket slides into the sliding groove.

3. The liquid level switch testing device according to claim 2, wherein, Along the sliding direction of the clamping bracket sliding into the sliding groove, the sliding groove is located in front of the elastic buckle.

4. The liquid level switch testing device according to claim 3, wherein, The elastic buckle is provided with an inclined portion. One end of the inclined portion close to the sliding groove is higher than the end far from the sliding groove.

5. The liquid level switch testing device according to claim 1, wherein The rotation angle range of the driving shaft is greater than or equal to 180 degrees.

6. The liquid level switch testing device according to claim 1, wherein A plurality of the clamping components are arranged side by side on the driving shaft.

7. The liquid level switch testing device according to claim 1, characterized in that, A needle seat plate is arranged on the fixed component. The needle seat plate is connected to the liquid level switch through a needle seat connector.

8. The liquid level switch testing device according to claim 1, wherein, The fixed component includes a test area and a central control area. The rotating space is arranged in the test area. One end of the driving shaft is connected to the side of the test area far from the central control area, and the other end is connected to the side of the central control area close to the test area.

9. The liquid level switch testing device according to claim 8, wherein, The central control area is provided with a central control platform. The central control platform includes a control module and a display module arranged on the surface of the central control platform. The display module and the driving member are both connected to the control module.

10. The liquid level switch testing device according to claim 9, characterized in that, The central control platform further includes an alarm module connected to the control module.

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