Device for testing air tightness and maximum flow of turbine box assembly of breathing machine

Abstract

The utility model provides an air tightness and maximum flow testing device for a turbine box assembly of a breathing machine, which relates to the technical field of testing equipment and comprises a control machine table, a pressing plugging mechanism, a movable clamp assembly and a multi-process testing integrated mechanism. The pressing plugging mechanism, the movable clamp assembly and the multi-process testing integrated mechanism are all fixedly connected in the control machine table and electrically connected with the control machine table, the movable clamp assembly is located in the central area of the multi-process testing integrated mechanism, and the pressing plugging mechanism is located above the movable clamp assembly; according to the breathing machine turbine box assembly air tightness and maximum flow testing device, a plurality of detection procedures can be integrated for use, the automation degree is improved, and the production efficiency of the turbine box assembly is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a device for testing the air tightness and maximum flow rate of a ventilator turbine box assembly. Background Technology

[0002] As a medical device for treating certain respiratory diseases, ventilators require high reliability. In the ventilator product field, the turbine is the most crucial component, used to generate airflow. The turbine housing assembly, as the turbine's load-bearing component, plays multiple roles, including gas mixing, stabilizing airflow, noise reduction, vibration isolation, and heat conduction and cooling.

[0003] Because there are many subsequent assembly parts for the turbine, airtightness testing is required before and after assembling the turbine box assembly and accessories during the machining process. Existing ventilator turbine assemblies on the market test airtightness and maximum flow rate, but these are basically separate mechanisms that only test airtightness and separate mechanisms that only test flow rate, without integrating the two together. Since these tests are performed separately by various different mechanisms, manual or external equipment is required to assist in moving the turbine box assembly, which is time-consuming, labor-intensive, and has a low degree of automation, resulting in low production line efficiency and hindering the improvement of output efficiency.

[0004] Therefore, it is necessary to propose a test device for the airtightness and maximum flow rate of a ventilator turbine box assembly to integrate multiple testing processes, improve automation, and thus increase the production efficiency of the turbine box assembly. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes a device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly. This device integrates multiple testing processes, improves automation, and enhances the production efficiency of the turbine box assembly.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly, including a control platform, a pressure sealing mechanism, a movable clamp assembly, and a multi-process testing integrated mechanism. The pressure sealing mechanism, the movable clamp assembly, and the multi-process testing integrated mechanism are all fixedly connected to the control platform and electrically connected to the control platform. The movable clamp assembly is located in the central area of ​​the multi-process testing integrated mechanism, and the pressure sealing mechanism is located above the movable clamp assembly.

[0008] Furthermore, the multi-process testing integrated mechanism includes a side-sealing mechanism, a gas supply mechanism, and a flow testing mechanism. One end of the movable fixture assembly is located between the side-sealing mechanism and the gas supply mechanism, with both the side-sealing mechanism and the gas supply mechanism facing the movable fixture assembly. The flow testing mechanism is located on one side of the other end of the movable fixture assembly, facing the movable fixture assembly. The side-sealing mechanism, the gas supply mechanism, and the flow testing mechanism are all fixedly connected to and electrically connected to the control machine.

[0009] Furthermore, the side sealing mechanism includes a first translational feeding device and a sealing block. The bottom of the first translational feeding device is fixedly connected to the control machine base and electrically connected to the control machine base. The bottom of the sealing block is fixedly connected to the sliding end of the first translational feeding device, and one end of the sealing block faces the space above the movable clamp assembly.

[0010] Furthermore, the gas delivery mechanism includes a second translational feeding device and a gas delivery plug. The bottom of the second translational feeding device is fixedly connected to the control unit and electrically connected to the control unit. An airtightness tester is provided inside the control unit. The airtightness tester is connected to the gas delivery plug through a pipe and is in communication with it. The bottom of the gas delivery plug is fixedly connected to the sliding end of the second translational feeding device, and the gas outlet end of the gas delivery plug faces the space above the movable clamp assembly.

[0011] Furthermore, the flow testing mechanism includes a third translational feeding device and a flow meter. The bottom of the third translational feeding device is fixedly connected to the control platform and electrically connected to the control platform. The bottom of the flow meter is fixedly connected to the sliding end of the third translational feeding device, and one end of the flow meter faces the space above the movable fixture assembly.

[0012] Furthermore, the multi-process testing integrated mechanism also includes a dotting mechanism, which is fixedly connected to and electrically connected to the control machine base, and is located on one side of the movable fixture assembly.

[0013] Furthermore, the dotting mechanism includes a fourth translational feeding device and a dotting device. The bottom of the fourth translational feeding device is fixedly connected to the control machine base and electrically connected to the control machine base. The bottom of the dotting device is fixedly connected to the sliding end of the fourth translational feeding device, and one end of the dotting device faces the space above the movable clamp assembly.

[0014] Furthermore, the movable fixture assembly includes a base plate, a drive device, and a clamping fixture. The base plate is fixedly connected to the control machine and located in the central area of ​​the multi-process testing integrated mechanism. The bottom of the clamping fixture is slidably connected to the base plate. One end of the drive device is fixedly connected to one end of the base plate, and one end of the drive device's rotating shaft is rotatably connected to the other end of the base plate. The rotating shaft of the drive device passes through the clamping fixture and forms a lead screw drive connection with the clamping fixture. The drive device is electrically connected to the control machine.

[0015] Furthermore, the base plate is provided with a slide rail, and the bottom of the clamping fixture is provided with a sliding groove. A portion of the slide rail is housed in the sliding groove and is slidably connected to the groove wall.

[0016] Furthermore, an integrated industrial control computer is provided on one side of the control machine to facilitate operation by workers. The integrated industrial control computer is electrically connected to the control machine, the pressing and sealing mechanism, the movable fixture assembly, and the multi-process testing integrated mechanism.

[0017] The beneficial effects of this utility model are:

[0018] This invention employs a control unit to operate the pressure-sealing mechanism, the movable clamp assembly, and the multi-process testing integrated mechanism. When testing the turbine box assembly, the turbine box assembly is fixed to the movable clamp assembly. The movable clamp assembly then moves the turbine box assembly to the first test area within the multi-process testing integrated mechanism. The pressure-sealing mechanism then presses down to seal the top hole of the turbine box assembly, and the first test is performed. After the first test is completed, the pressure-sealing mechanism rises, and the movable clamp assembly moves the turbine box assembly to the next test area within the multi-process testing integrated mechanism. The pressure-sealing mechanism then presses down again to seal the top hole of the turbine box assembly, and the next test is performed. This allows for automated testing of the turbine box assembly. In summary, this ventilator turbine box assembly airtightness and maximum flow rate testing device integrates multiple testing processes, improving automation and thus increasing the production efficiency of turbine box assemblies. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the airtightness and maximum flow rate testing device for the ventilator turbine box assembly of this utility model.

[0020] Figure 2 This is an internal schematic diagram of the airtightness and maximum flow rate testing device for the ventilator turbine box assembly of this utility model.

[0021] Figure 3This is a schematic diagram of the internal structure of the ventilator turbine box assembly airtightness and maximum flow rate testing device after the pressure sealing mechanism has been pressed down.

[0022] The attached figures are labeled as follows:

[0023] 1 control unit, 11 air tightness tester, 12 industrial control integrated computer;

[0024] The pressing and sealing mechanism 2, cylinder 21, support frame 22, and pressing frame plate 23;

[0025] Movable clamp assembly 3, base plate 31, slide rail 311, drive device 32, clamping clamp 33, sliding groove 331;

[0026] Multi-process testing integrated mechanism 4, side sealing mechanism 41, first translational feeding device 411, sealing block 412, gas supply mechanism 42, second translational feeding device 421, gas supply plug 422, flow testing mechanism 43, third translational feeding device 431, flow meter 432, dotting mechanism 44, fourth translational feeding device 441, dotting device 442;

[0027] Turbine box assembly 5. Detailed Implementation

[0028] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0029] Please refer to Figures 1-3 This utility model proposes a device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly, including a control platform 1, a pressure sealing mechanism 2, a movable clamp assembly 3, and a multi-process testing integrated mechanism 4. The pressure sealing mechanism 2, the movable clamp assembly 3, and the multi-process testing integrated mechanism 4 are all fixedly connected to the control platform 1 and electrically connected to the control platform 1. The movable clamp assembly 3 is located in the central area of ​​the multi-process testing integrated mechanism 4, and the pressure sealing mechanism 2 is located above the movable clamp assembly 3. The pressure sealing mechanism 2 includes a cylinder 21, a support frame 22, and a pressure plate 23. The cylinder 21 is fixedly connected to the top of the support frame 22, and the pressure plate 23 is longitudinally slidably connected to the support frame 22. The push rod of the cylinder 21 is fixedly connected to the middle of the pressure plate 23. When pressing down, the cylinder 21 pushes the pressure plate 23 to slide downward, thereby causing the pressure plate 23 to press down on the turbine box assembly.

[0030] In this embodiment, the worker can use the control machine 1 to operate the pressing and sealing mechanism 2, the movable clamp assembly 3, and the multi-process testing integrated mechanism 4. When testing the turbine box assembly 5, the turbine box assembly is fixed on the movable clamp assembly 3, and then the control machine 1 is operated to issue test commands to the pressing and sealing mechanism 2, the movable clamp assembly 3, and the multi-process testing integrated mechanism 4 respectively. Then, the movable clamp assembly 3 moves the turbine box assembly to the first test area in the multi-process testing integrated mechanism 4. The turbine box assembly 5 stops in the test area, and the pressing and sealing mechanism 2 presses down to seal the top hole of the turbine box assembly. Then, the turbine box assembly 5 is subjected to the first test. After the first test is completed, the pressing and sealing mechanism 2 rises, and the movable clamp assembly 3 moves the turbine box assembly to the next test area in the multi-process test integrated mechanism 4. The pressing and sealing mechanism 2 presses down again to seal the top hole of the turbine box assembly. Then, the turbine box assembly 5 is subjected to the next test. In this way, the turbine box assembly 5 can be automatically tested in all test processes.

[0031] In summary, this ventilator turbine box assembly airtightness and maximum flow rate testing device can integrate multiple testing processes, improve the degree of automation, and thus improve the production efficiency of turbine box assemblies.

[0032] In this embodiment, the multi-process testing integrated mechanism 4 includes a side sealing mechanism 41, a gas delivery mechanism 42, and a flow testing mechanism 43. One end of the movable clamp assembly 3 is located between the side sealing mechanism 41 and the gas delivery mechanism 42, with both the side sealing mechanism 41 and the gas delivery mechanism 42 facing the movable clamp assembly 3. The flow testing mechanism 43 is located on one side of the other end of the movable clamp assembly 3, facing the movable clamp assembly 3. The side sealing mechanism 41, the gas delivery mechanism 42, and the flow testing mechanism 43 are all fixedly connected to and electrically connected to the control unit 1. When testing the turbine box assembly, a sealing test and a flow test are performed. During the sealing test, the turbine box assembly is fixed on the movable clamp assembly 3. The movable clamp assembly 3 moves the turbine box assembly to a position between the side sealing mechanism 41 and the gas delivery mechanism 42, where it stops. Then, the pressing sealing mechanism 2 descends. The top opening of the turbine box assembly is sealed, and then the side sealing mechanism 41 extends to seal the opening on one side of the turbine box assembly, while the air supply mechanism 42 extends to seal the opening on the other side of the turbine box assembly. Then, the air supply mechanism 42 supplies air into the turbine box assembly and detects the air pressure change value to test the overall sealing performance of the turbine box assembly. After the sealing performance test is completed, the flow test is performed. During the flow test, the downward sealing mechanism 2 rises, and the movable clamp assembly 3 moves the turbine box assembly to one side of the flow test mechanism 43. Then, the downward sealing mechanism 2 descends again to seal the top opening of the turbine box assembly, and the flow test mechanism 43 extends and seals the opening on one side of the turbine box assembly, while the opening on the other side remains open. Then, the flow test mechanism 43 begins to supply air to the turbine box assembly and detects the air pressure change value to test the flow rate of the turbine box assembly.

[0033] In this embodiment, the side sealing mechanism 41 includes a first translational feeding device 411 and a sealing block 412. The bottom of the first translational feeding device 411 is fixedly connected to the control unit 1 and electrically connected to the control unit 1. The bottom of the sealing block 412 is fixedly connected to the sliding end of the first translational feeding device 411. One end of the sealing block 412 faces the space above the movable clamp assembly 3. The first translational feeding device 411 is translated by a stepper motor driving a slider through a lead screw. The sliding end is located at the top of the slider. When the turbine box assembly and the sealing block 412 are aligned, the first translational feeding device 411 is activated to drive the sealing block 412 toward the turbine box assembly to seal the opening on one side of the turbine box assembly.

[0034] In this embodiment, the gas supply mechanism 42 includes a second translational feeding device 421 and a gas supply plug 422. The bottom of the second translational feeding device 421 is fixedly connected to the control unit 1 and electrically connected to the control unit 1. An airtightness tester 11 is provided in the control unit 1. The airtightness tester 11 is connected to the gas supply plug 422 through a pipe and is conductive. The bottom of the gas supply plug 422 is fixedly connected to the sliding end of the second translational feeding device 421. The gas outlet end of the gas supply plug 422 faces the space above the movable clamp assembly 3. The second translational feeding device 421 is translated by a stepper motor driving a slider through a lead screw. The sliding end is located at the top of the slider. When the turbine box assembly and the gas supply plug 422 are aligned, the second translational feeding device 421 is activated to drive the gas supply plug 422 to move toward the turbine box assembly to seal the opening on the other side of the turbine box assembly, and then gas is supplied to test the overall airtightness of the turbine box assembly.

[0035] In this embodiment, the flow testing mechanism 43 includes a third translational feeding device 431 and a flow meter 432. The bottom of the third translational feeding device 431 is fixedly connected to the control platform 1 and electrically connected to the control platform 1. The bottom of the flow meter 432 is fixedly connected to the sliding end of the third translational feeding device 431. One end of the flow meter 432 faces the space above the movable clamp assembly 3. The third translational feeding device 431 is translated by a stepper motor driving a slider through a lead screw. The sliding end is located at the top of the slider. When the turbine box assembly and the flow meter 432 are aligned, the third translational feeding device 431 is activated to move the flow meter 432 toward the turbine box assembly to seal the opening on one side of the turbine box assembly, and then supply air to test the flow rate of the turbine box assembly.

[0036] In this embodiment, the multi-process testing integrated mechanism 4 also includes a marking mechanism 44, which is fixedly connected to and electrically connected to the control platform 1. The marking mechanism 44 is located on one side of the movable fixture assembly 3. After the turbine box assembly has completed the airtightness and flow rate tests and is a good product, the marking mechanism 44 will mark a mark on one side of the turbine box assembly to mark the good turbine box assembly.

[0037] In this embodiment, the marking mechanism 44 includes a fourth translational feeding device 441 and a marking device 442. The bottom of the fourth translational feeding device 441 is fixedly connected to the control platform 1 and electrically connected to the control platform 1. The bottom of the marking device 442 is fixedly connected to the sliding end of the fourth translational feeding device 441. One end of the marking device 442 faces the space above the movable clamp assembly 3. The first translational feeding device 411, the second translational feeding device 421, the third translational feeding device 431, and the fourth translational feeding device 441 have the same structure. The fourth translational feeding device 441 is translated by a stepper motor driving a slider through a lead screw. The sliding end is located at the top of the slider. After the turbine box assembly has completed the airtightness and flow rate tests and is a good product, the movable clamp assembly 3 drives the turbine box assembly to move to one side of the marking device 442. The marking device 442 then marks the turbine box assembly with dots to make a mark.

[0038] In this embodiment, the movable fixture assembly 3 includes a base plate 31, a drive device 32, and a clamping fixture 33. The base plate 31 is fixedly connected to the control platform 1 and located in the central area of ​​the multi-process testing integrated mechanism 4. The bottom of the clamping fixture 3 is slidably connected to the base plate 31. One end of the drive device 32 is fixedly connected to one end of the base plate 31, and one end of the drive device 32's rotating shaft is rotatably connected to the other end of the base plate 31. The rotating shaft of the drive device 32 passes through the clamping fixture 33 and forms a screw drive connection with the clamping fixture 33. The drive device 32 is electrically connected to the control platform 1. Before testing the turbine box assembly, the turbine box assembly is first placed in the clamping fixture 33 for clamping and fixing, and then the control... Under the control of machine 1, drive device 32 rotates forward, causing lead screw to rotate forward a first preset number of times, so that clamping fixture 33 slides backward a first preset distance, thereby causing turbine box assembly to stop between side sealing mechanism 41 and gas delivery mechanism 42 for sealing test. After sealing test is completed, drive device 32 rotates forward again, causing lead screw to rotate forward a second preset number of times, so that clamping fixture 33 slides backward a second preset distance, thereby causing turbine box assembly to stop on one side of flow test mechanism 43 for flow test. After all tests are completed and turbine box assembly is removed, drive device 32 reverses, causing lead screw to reverse a third preset number of times, so that clamping fixture 33 is reset.

[0039] In this embodiment, a slide rail 311 is provided on the base plate 31, and a sliding groove 331 is provided at the bottom of the clamping fixture 33. A portion of the slide rail 311 is housed in the sliding groove 331 and is slidably connected to the groove wall of the sliding groove 331. The slide rail 311 is used to provide a sliding support structure for the clamping fixture 33. The cooperation between the sliding groove 331 and the slide rail 311 can improve the sliding accuracy and make the sliding of the clamping fixture 33 smoother.

[0040] In this embodiment, an integrated industrial control computer 12 is provided on one side of the control platform 1 for easy operation by workers. The integrated industrial control computer 12 is electrically connected to the control platform 1, the pressure sealing mechanism 2, the movable fixture assembly 3, and the multi-process testing integrated mechanism 4. The integrated industrial control computer 12 is equipped with a touch screen, and workers can issue corresponding instructions to the pressure sealing mechanism 2, the movable fixture assembly 3, and the multi-process testing integrated mechanism 4 through the touch screen, or set and save collaborative test instructions for automated testing.

[0041] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly, characterized in that, The device includes a control platform, a pressure-sealing mechanism, a movable fixture assembly, and a multi-process testing integrated mechanism. The pressure-sealing mechanism, the movable fixture assembly, and the multi-process testing integrated mechanism are all fixedly connected to the control platform and electrically connected to it. The movable fixture assembly is located in the central area of ​​the multi-process testing integrated mechanism, and the pressure-sealing mechanism is located above the movable fixture assembly.

2. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 1, characterized in that, The multi-process testing integrated mechanism includes a side-sealing mechanism, a gas supply mechanism, and a flow testing mechanism. One end of the movable clamp assembly is located between the side-sealing mechanism and the gas supply mechanism, with both the side-sealing mechanism and the gas supply mechanism facing the movable clamp assembly. The flow testing mechanism is located on one side of the other end of the movable clamp assembly, facing the movable clamp assembly. The side-sealing mechanism, the gas supply mechanism, and the flow testing mechanism are all fixedly connected to and electrically connected to the control machine.

3. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 2, characterized in that, The side sealing mechanism includes a first translational feeding device and a sealing block. The bottom of the first translational feeding device is fixedly connected to the control machine base and electrically connected to the control machine base. The bottom of the sealing block is fixedly connected to the sliding end of the first translational feeding device, and one end of the sealing block faces the space above the movable clamp assembly.

4. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 2, characterized in that, The gas delivery mechanism includes a second translational feeding device and a gas delivery plug. The bottom of the second translational feeding device is fixedly connected to the control unit and electrically connected to the control unit. An airtightness tester is provided in the control unit. The airtightness tester is connected to the gas delivery plug through a pipe and is in communication with it. The bottom of the gas delivery plug is fixedly connected to the sliding end of the second translational feeding device, and the gas outlet end of the gas delivery plug faces the space above the movable clamp assembly.

5. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 2, characterized in that, The flow testing mechanism includes a third translational feeding device and a flow meter. The bottom of the third translational feeding device is fixedly connected to the control platform and electrically connected to the control platform. The bottom of the flow meter is fixedly connected to the sliding end of the third translational feeding device, and one end of the flow meter faces the space above the movable fixture assembly.

6. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 2, characterized in that, The multi-process testing integrated mechanism also includes a dotting mechanism, which is fixedly connected to and electrically connected to the control platform, and is located on one side of the movable fixture assembly.

7. The device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly according to claim 6, characterized in that, The dotting mechanism includes a fourth translational feeding device and a dotting device. The bottom of the fourth translational feeding device is fixedly connected to the control machine base and electrically connected to the control machine base. The bottom of the dotting device is fixedly connected to the sliding end of the fourth translational feeding device, and one end of the dotting device faces the space above the movable clamp assembly.

8. The device for testing the airtightness and maximum flow rate of the ventilator turbine box assembly according to claim 1, characterized in that, The movable fixture assembly includes a base plate, a drive device, and a clamping fixture. The base plate is fixedly connected to the control machine and located in the central area of ​​the multi-process testing integrated mechanism. The bottom of the clamping fixture is slidably connected to the base plate. One end of the drive device is fixedly connected to one end of the base plate, and one end of the drive device's rotating shaft is rotatably connected to the other end of the base plate. The rotating shaft of the drive device passes through the clamping fixture and forms a lead screw drive connection with the clamping fixture. The drive device is electrically connected to the control machine.

9. The device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly according to claim 8, characterized in that, The base plate is provided with a slide rail, and the bottom of the clamping fixture is provided with a sliding groove. A portion of the slide rail is housed in the sliding groove and is slidably connected to the groove wall.

10. The device for testing the airtightness and maximum flow rate of a ventilator turbine box assembly according to claim 1, characterized in that, One side of the control machine is equipped with an integrated industrial control computer for easy operation by workers. The integrated industrial control computer is electrically connected to the control machine, the pressure sealing mechanism, the movable fixture assembly, and the multi-process testing integrated mechanism.

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