A device for detecting leakage of electrolyte in and out of an electric pile

Abstract

The application relates to the technical field of liquid flow batteries, and discloses a device capable of detecting internal and external liquid leakage of an electric pile, which comprises a fixing frame, a limiting block is fixedly connected to the side wall of the fixing frame, a detection table is slidably connected to the side wall of the fixing frame, a fixing rod is slidably connected to the inside of the detection table, a placing plate is fixedly connected to the upper surface of the fixing rod, a bidirectional screw rod is rotatably connected to the inside of the placing plate, a fixing seat one is slidably connected to the inside of the detection table, a motor is fixedly connected to the upper surface of the fixing seat one, the output end of the motor is fixedly connected to one end of the bidirectional screw rod, a sliding block is threadedly connected to the side wall of the bidirectional screw rod, and the side wall of the sliding block is slidably connected to the inside of the placing plate. The bidirectional screw rod is driven to rotate by starting the motor, the clamping plate one is slid and pressed to fix the electric pile, the clamping plate two, the clamping plate three and the rubber block are adaptively deflected, the contact area with the electric pile is increased, the stable clamping effect is achieved, and the electric pile with different shapes can be fixed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid flow battery, in particular to a device capable of detecting internal and external liquid leakage of an electric pile. BACKGROUND

[0002] The electric pile is a device that directly converts chemical energy into electrical energy, usually composed of multiple electrochemical cell units stacked together, each electrochemical cell unit contains two electrodes and an electrolyte between the two electrodes, in the electrochemical reaction, the active substances in the electrolyte are transported between the electrodes to generate current, the safe operation of the electric pile is crucial, therefore it is necessary to detect the liquid leakage, internal leakage will cause the instability of the electrolyte concentration inside the electric pile, affecting the electrochemical reaction, and even causing internal short circuit or other safety problems of the electric pile, external leakage will cause pollution to the environment around the electric pile, and also cause corrosion or other damage to the equipment and structure around the electric pile.

[0003] The traditional internal and external liquid leakage detection device of the electric pile first fixes the electric pile, places it inside the detection groove, and then uses an electrolyte detector to detect the electrolyte leakage in the internal and external environment of the electric pile. These detectors are usually based on chemical sensor technology, which can quickly and accurately detect the presence of electrolyte and issue an alarm or record data, but the traditional internal and external liquid leakage detection device of the electric pile does not consider the problem that the fixing structure is single, and only fixes the electric pile through the corresponding groove, which cannot fix electric piles of different shapes and sizes. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides a device capable of detecting internal and external liquid leakage of an electric pile, which solves the problem that the traditional internal and external liquid leakage detection device of the electric pile cannot fix electric piles of different shapes and sizes due to the single fixing structure.

[0005] In order to achieve the above object, the present application is realized by the following technical scheme: A device capable of detecting liquid leakage in and out of an electric pile, comprising a fixing frame, a limiting block is fixedly connected to the side wall of the fixing frame, a detection table is slidably connected to the side wall of the fixing frame, a fixed rod is slidably connected inside the detection table, a placing plate is fixedly connected to the upper surface of the fixed rod, a double screw rod is rotatably connected inside the placing plate, a fixed seat one is slidably connected inside the detection table, a motor is fixedly connected to the upper surface of the fixed seat one, the output end of the motor is fixedly connected to one end of the double screw rod, a sliding block is threadedly connected to the side wall of the double screw rod, the sliding block is slidably connected inside the placing plate, a clamping plate one is fixedly connected to the upper surface of the sliding block, a limiting groove one is formed in the inside of the clamping plate one, a clamping plate two is arranged inside the clamping plate one, a limiting ring one is fixedly connected to the side wall of the clamping plate two, the limiting ring one is slidably connected inside the limiting groove one, a limiting groove two is formed in the inside of the clamping plate two, a clamping plate three is arranged inside the clamping plate two, a limiting ring two is fixedly connected to the side wall of the clamping plate three, the limiting ring two is slidably connected inside the limiting groove two, a limiting groove three is formed in the inside of the clamping plate three, a rubber block is arranged inside the clamping plate three, a limiting ring three is fixedly connected to the side wall of the rubber block, the limiting ring three is slidably connected inside the limiting groove three, a temperature measuring assembly is arranged on the upper surface of the clamping plate one, a pressurizing assembly is arranged on the upper surface of the detection table, and a control assembly is arranged inside the fixing frame.

[0006] Preferably, the temperature measuring assembly comprises a hinged frame fixedly connected to the upper surface of the clamping plate one, a rotating plate rotatably connected inside the clamping plate one, a fixed block one fixedly connected to the upper surface of one side of the rotating plate, and a fixed block two fixedly connected to the upper surface of the other side of the rotating plate.

[0007] Preferably, the fixed block one is slidably connected with a clamping block, the fixed block two is rotatably connected with a rotating frame, the rotating frame is fixedly connected with a groove plate, and the groove plate is clamped with the clamping block.

[0008] Preferably, a spring is arranged between the groove plate and the fixed block two, one end of the spring is fixedly connected to the upper surface of the fixed block two, and the other end of the spring is fixedly connected to the side wall of the groove plate.

[0009] Preferably, a controller is fixedly connected to the upper surface of the clamping plate one, a temperature detector is fixedly connected to the lower surface of the rotating plate, a connecting line one is arranged between the controller and the temperature detector, a warning lamp is arranged on the upper surface of the controller, the controller is electrically connected with the warning lamp, and the controller and the temperature detector are connected through the connecting line one.

[0010] Preferably, the pressing assembly comprises a fixed seat two, the side wall of the fixed seat two is slidably connected in the detection table, the upper surface of the fixed seat two is fixedly connected with a presser, the output end of the presser is fixedly connected with a connecting pipe one, and the inside of the connecting pipe one is fixedly connected with a pressure gauge one.

[0011] Preferably, the detection table is fixedly connected with a pressure gauge two, and the inside of the pressure gauge two is fixedly provided with a connecting pipe two.

[0012] Preferably, the inside of the fixed frame is fixedly connected with a water tank, the inside of the water tank is fixedly connected with a drain pipe, the inside of the drain pipe is slidably connected with a drain plug, and one end of the connecting pipe two is arranged in the inside of the water tank.

[0013] Preferably, the control assembly comprises an operation screen, the lower surface of the operation screen is fixedly connected with the side wall of the fixed frame, the inside of the fixed frame is fixedly connected with a sensor, and the operation screen and the sensor are electrically connected.

[0014] Preferably, the sensor and the presser are provided with a connecting line two, and the sensor and the presser are connected through the connecting line two.

[0015] Working principle: in the process of using the device to detect whether the electric pile leaks, first, the electric pile is placed between the clamping plates, then the motor is started to drive the bidirectional screw rod to rotate, and the two side sliders move to the middle of the placement plate, thereby driving the clamping plate one to slide to the middle, and the electric pile is fixed by extrusion, at this time, the rubber block in the clamping plate one slides in the clamping plate three through the limiting ring three, the clamping plate three slides in the clamping plate two through the limiting ring two, and the clamping plate two slides in the clamping plate one through the limiting ring one, so that the contact area with the electric pile is increased, the fixed is more firm and can clamp and fix electric piles of different shapes, after fixing, the swing plate is moved to rotate in the hinged frame, so that the temperature detector is attached to the surface of the electric pile, then the clamping block is pushed to slide in the fixed block one, the groove plate is gradually lifted, the groove plate is deflected by the spring and the spring is deformed, when the protruding block of the clamping block moves to the bottom of the recess hole in the groove plate, the spring loses pressure and resets, and the groove plate is reset, so that the clamping block and the groove plate are engaged, ensuring the stability of the temperature detector, then the electric wire is connected with the electric pile to simulate the running state, after a period of time, the temperature detector is controlled by the controller to detect the temperature, the temperature detector detects the temperature and transmits the signal back to the controller, then the controller compares the temperature with the normal running temperature of the electric pile, the normal running temperature of the electric pile is between 20-60 DEG C, when the detected temperature is abnormal and exceeds the interval, the controller controls the warning light to flash, reminding the staff that the electric pile has internal leakage, when it is necessary to detect whether the electric pile has external leakage, the connecting pipe one is connected with the air inlet of the electric pile, the connecting pipe two is connected with the air outlet of the electric pile, and the bottom end of the connecting pipe two is placed in the water tank, then the sensor is started by operating the screen, the sensor controls the pressure generator to pressurize the inside of the electric pile after receiving the signal, the pressure gauge one records the pressure value, when the electric pile has external leakage, gas and electrolyte flow out from the inside of the connecting pipe two, at the same time, the pressure gauge two records again, by comparing the values of the pressure gauge two and the pressure gauge one, it can be known whether the electric pile has external leakage, or directly observing whether bubbles are generated in the water tank, whether the electric pile has external leakage can also be known.

[0016] The application provides a device capable of detecting internal and external leakage of an electric pile.

[0017] 1. The application drives the bidirectional screw to rotate by starting the motor, so that the clamping plate slides and extrudes the fixed electrode, and with the extrusion process, the clamping plate two, clamping plate three and rubber block will adaptively deflect, so as to increase the contact area with the electrode, so as to achieve the effect of stable clamping and fixing of different shapes of electrodes, solve the problem that the traditional electrode internal and external leakage detection device cannot fix different shapes and sizes of electrodes due to single fixing structure, improve the practicability of the equipment through the above scheme.

[0018] 2. The application drives the rotating plate, so that the temperature detector is attached to the surface of the electrode, and then the clamping block is pushed to slide, so that the clamping block is tightly clamped with the groove plate, ensuring the stability and reliability of the temperature detector, solving the problem that the traditional part of the electrode internal and external leakage detection device is relatively arbitrary when placing the temperature detector, and cannot be firmly attached to the electrode, through the above scheme, the stability of the temperature detector is improved.

[0019] 3. The application adopts modular design as a whole, so that the subsequent disassembly and maintenance work is more convenient, and the efficiency of disassembly and maintenance in the later stage is improved. DETAILED DESCRIPTION

[0020] Figure 1 It is a perspective view of the application;

[0021] Figure 2 It is a side perspective view of the application;

[0022] Figure 3 It is a fixed frame structure diagram of the application;

[0023] Figure 4 It is a detection table structure diagram of the application;

[0024] Figure 5 It is a detection table split structure diagram of the application;

[0025] Figure 6 It is a placement plate structure diagram of the application;

[0026] Figure 7 It is a clamping plate one split structure diagram of the application;

[0027] Figure 8 It is a rotating plate part structure diagram of the application.

[0028] Wherein, 1, fixed frame; 2, limit block; 3, detection table; 4, fixed rod; 5, placing plate; 6, bidirectional screw rod; 7, fixed seat one; 8, motor; 9, sliding block; 10, clamping plate one; 11, limit groove one; 12, clamping plate two; 13, limit ring one; 14, limit groove two; 15, clamping plate three; 16, limit ring two; 17, limit groove three; 18, rubber block; 19, limit ring three; 20, hinged frame; 21, rotating plate; 22, fixed block one; 23, clamping block; 24, fixed block two; 25, spring; 26, rotating frame; 27, groove plate; 28, controller; 29, temperature detector; 30, connecting line one; 31, warning light; 32, fixed seat two; 33, pressure device; 34, pressure gauge one; 35, connecting pipe one; 36, pressure gauge two; 37, connecting pipe two; 38, water tank; 39, drain pipe; 40, drain plug; 41, operation screen; 42, sensor; 43, connecting line two. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Embodiment:

[0031] Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 8The embodiment of the application provides a device capable of detecting liquid leakage in and out of an electric pile, which comprises a fixing frame 1, a limiting block 2 fixedly connected to the side wall of the fixing frame 1, a detection table 3 slidingly connected to the side wall of the fixing frame 1, a fixed rod 4 slidingly connected to the inside of the detection table 3, a placing plate 5 fixedly connected to the upper surface of the fixed rod 4, a bidirectional screw rod 6 rotatably connected to the inside of the placing plate 5, a fixed seat one 7 slidingly connected to the inside of the detection table 3, a motor 8 fixedly connected to one end of the bidirectional screw rod 6, a sliding block 9 threadedly connected to the side wall of the bidirectional screw rod 6, the sliding block 9 slidingly connected to the inside of the placing plate 5, a clamping plate one 10 fixedly connected to the upper surface of the sliding block 9, a limiting groove one 11 formed in the clamping plate one 10, a clamping plate two 12 arranged in the clamping plate one 10, a limiting ring one 13 fixedly connected to the side wall of the clamping plate two 12, the limiting ring one 13 slidingly connected to the inside of the limiting groove one 11, a limiting groove two 14 formed in the clamping plate two 12, a clamping plate three 15 arranged in the clamping plate two 12, a limiting ring two 16 fixedly connected to the side wall of the clamping plate three 15, the limiting ring two 16 slidingly connected to the inside of the limiting groove two 14, a limiting groove three 17 formed in the clamping plate three 15, a rubber block 18 arranged in the clamping plate three 15, a limiting ring three 19 fixedly connected to the side wall of the rubber block 18, the limiting ring three 19 slidingly connected to the inside of the limiting groove three 17, a temperature measuring assembly arranged on the upper surface of the clamping plate one 10, a pressurizing assembly arranged on the upper surface of the detection table 3, and a control assembly arranged in the fixing frame 1.

[0032] In the detection process of whether the electric pile leaks, first, the electric pile to be detected is placed between the clamping plate one 10 in the equipment, at this time, the motor 8 is started, the motor 8 starts to work, drives the bidirectional screw rod 6 to rotate, with the rotation of the bidirectional screw rod 6, the sliding blocks 9 on both sides simultaneously move to the middle in the inside of the placing plate 5, this action makes the clamping plate one 10 gradually slide to the middle, and the electric pile is fixed by extrusion, in the process that the clamping plate one 10 slides to the middle, the rubber block 18 slides in the clamping plate three 15 through the limiting ring three 19, thereby increasing the contact area with the electric pile. At the same time, the clamping plate three 15 also slides in the clamping plate two 12 through the limiting ring two 16, further enhancing the stability of the fixation. Finally, the clamping plate two 12 slides in the clamping plate one 10 through the limiting ring one 13, ensuring the stability and reliability of the whole clamping structure, after the fixation is completed, the inside of the electric pile is pressurized by the pressurizing assembly, whether the electric pile exists out-leakage is detected, then the temperature of the electric pile when running is detected by the temperature measuring assembly, whether the electric pile exists in-leakage is obtained.

[0033] The temperature measuring assembly comprises a hinged frame 20 fixedly connected to the upper surface of the clamping plate 1, a rotating plate 21 rotatably connected to the inside of the clamping plate 1, a fixed block 1 22 fixedly connected to the upper surface of one side of the rotating plate 21, a fixed block 2 24 fixedly connected to the upper surface of the other side of the rotating plate 21, a clamping block 23 slidably connected to the inside of the fixed block 1 22, a rotating frame 26 rotatably connected to the inside of the fixed block 2 24, a groove plate 27 fixedly connected to the side wall of the rotating frame 26, a spring 25 arranged between the groove plate 27 and the fixed block 2 24, one end of the spring 25 fixedly connected to the upper surface of the fixed block 2 24, the other end of the spring 25 fixedly connected to the side wall of the groove plate 27, a controller 28 fixedly connected to the upper surface of the clamping plate 1, a temperature detector 29 fixedly connected to the lower surface of the rotating plate 21, a connecting line 1 30 arranged between the controller 28 and the temperature detector 29, a warning light 31 arranged on the upper surface of the controller 28, and the controller 28 and the warning light 31 are electrically connected.

[0034] When the electric pile is fixed, the rotating plate 21 can be rotated in the hinged frame 20, so that the temperature detector 29 can gradually adhere to the surface of the electric pile, preparing for the subsequent temperature detection work. When the temperature detector 29 is adhered to the surface of the electric pile, the clamping block 23 is pushed to slide in the fixed block 1 22, and with the movement of the clamping block 23, the groove plate 27 is gradually lifted to deform the spring 25. When the protruding block of the clamping block 23 moves to the bottom of the recess hole in the groove plate 27, the spring 25 loses pressure and starts to reset. In this resetting process, the spring 25 makes the groove plate 27 reset, and finally makes the clamping block 23 and the groove plate 27 tightly clamped together, which ensures the stability and reliability of the temperature detector 29. At this time, the electric wire is connected to the electric pile to simulate its running state. Once the electric pile starts to work, the controller 28 can be started to control the temperature detector 29 to detect the temperature. The temperature detector 29 can accurately detect the temperature of the electric pile and transmit the detected signal back to the controller 28. The controller 28 processes and analyzes the received signal to determine whether the running state of the electric pile is normal. The normal running temperature of the electric pile is between 20℃-60℃. When the electric pile has internal leakage, the temperature of the electric pile will rise when it runs. After the electric pile simulates running for a period of time, when the temperature detector 29 detects that the temperature exceeds the temperature range, the controller 28 will immediately respond to control the warning light 31 to start flashing. The flashing warning light 31 can effectively remind the staff to timely discover and handle the possible internal leakage problem of the electric pile.

[0035] The pressing assembly comprises a fixed seat two 32, the side wall of the fixed seat two 32 is slidingly connected in the detection table 3, the upper surface of the fixed seat two 32 is fixedly connected with a pressure device 33, the output end of the pressure device 33 is fixedly connected with a connecting pipe one 35, the inside of the connecting pipe one 35 is fixedly connected with a pressure gauge one 34, the side wall of the detection table 3 is fixedly connected with a pressure gauge two 36, the inside of the pressure gauge two 36 is fixedly provided with a connecting pipe two 37, the inside of the fixed frame 1 is fixedly connected with a water tank 38, the inside of the water tank 38 is fixedly connected with a drain pipe 39, the inside of the drain pipe 39 is slidingly connected with a drain plug 40, one end of the connecting pipe two 37 is arranged in the inside of the water tank 38, the control assembly comprises an operation screen 41, the lower surface of the operation screen 41 is fixedly connected with the side wall of the fixed frame 1, the inside of the fixed frame 1 is fixedly connected with a sensor 42, the operation screen 41 and the sensor 42 are electrically connected, the sensor 42 and the pressure device 33 are provided with a connecting line two 43, and the sensor 42 and the pressure device 33 are connected through the connecting line two 43.

[0036] When the electric pile works normally, the gas enters the electric pile through the gas inlet, passes through the single battery, and is discharged from the gas outlet. However, when the electric pile has an external leakage situation, the electrolyte may flow out from the gas outlet together with the gas, thereby affecting the performance and safety of the electric pile. In order to effectively detect whether the electric pile has an external leakage situation, the connecting pipe one 35 can be tightly connected with the gas inlet of the electric pile. This step is to ensure that the gas can smoothly enter the electric pile. The connecting pipe two 37 is connected with the gas outlet of the electric pile, and the bottom end of the connecting pipe two 37 is placed in the inside of the water tank 38. The water tank 38 provides a water source for the detection process, and whether the electric pile has an external leakage situation is judged by observing the changes in the inside of the water tank 38. At the same time, the sensor 42 can be started through the operation screen 41. After receiving the signal, the sensor 42 will control the pressure device 33 to pressurize the inside of the electric pile. The purpose of this step is to simulate the pressure environment of the electric pile in the working state, so as to better detect the external leakage situation, and observe and record the numerical changes of the pressure gauge one 34 and the pressure gauge two 36. During the pressurization process, the pressure gauge one 34 will record the pressurization value in real time. When the electric pile has an external leakage situation, the gas will flow out from the inside of the connecting pipe two 37 together with the electrolyte, thereby causing bubbles in the inside of the water tank 38. At this time, the pressure gauge two 36 will record the corresponding pressure change. Finally, by comparing the numerical difference between the pressure gauge two 36 and the pressure gauge one 34, whether the electric pile has an external leakage situation can be judged. If the numerical difference between the two is large, or obvious bubbles appear in the inside of the water tank 38, it means that the electric pile has an external leakage problem.

[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for detecting leakage of electrolyte inside and outside of an electric pile, comprising a fixing frame (1), characterized in that, The fixed frame (1) side wall is fixedly connected with a limiting block (2), the fixed frame (1) side wall is slidably connected with a detection table (3), the detection table (3) is slidably connected with a fixed rod (4) inside, the fixed rod (4) upper surface is fixedly connected with a placing plate (5), the placing plate (5) is rotatably connected with a two-way screw rod (6) inside, the detection table (3) is slidably connected with a fixed seat one (7) inside, the fixed seat one (7) upper surface is fixedly connected with a motor (8), the motor (8) output end is fixedly connected with the two-way screw rod (6) one end, the two-way screw rod (6) side wall is threadedly connected with a sliding block (9), the sliding block (9) side wall is slidably connected in the placing plate (5) inside, the sliding block (9) upper surface is fixedly connected with a clamping plate one (10), the clamping plate one (10) is provided with a limiting groove one (11) inside, the clamping plate one (10) is provided with a clamping plate two (12) inside, the clamping plate two (12) side wall is fixedly connected with a limiting ring one (13), the limiting ring one (13) side wall is slidably connected in the limiting groove one (11) inside, the clamping plate two (12) is provided with a limiting groove two (14) inside, the clamping plate two (12) is provided with a clamping plate three (15) inside, the clamping plate three (15) side wall is fixedly connected with a limiting ring two (16), the limiting ring two (16) side wall is slidably connected in the limiting groove two (14) inside, the clamping plate three (15) is provided with a limiting groove three (17) inside, the clamping plate three (15) is provided with a rubber block (18) inside, the rubber block (18) side wall is fixedly connected with a limiting ring three (19), the limiting ring three (19) side wall is slidably connected in the limiting groove three (17) inside, the clamping plate one (10) upper surface is provided with a temperature measurement assembly, the detection table (3) upper surface is provided with a pressurizing assembly, the fixed frame (1) inside is provided with a control assembly.

2. The device according to claim 1, wherein, The temperature measurement assembly includes a hinged frame (20), the hinged frame (20) side wall is fixedly connected to the clamping plate one (10) upper surface, the clamping plate one (10) is rotatably connected with a rotating plate (21) inside, one side The rotating plate (21) upper surface is fixedly connected with a fixed block one (22), the other side The rotating plate (21) upper surface is fixedly connected with a fixed block two (24).

3. The device according to claim 2, wherein the device is characterized by, The fixed block one (22) is slidably connected with a clamping block (23) inside, the fixed block two (24) is rotatably connected with a rotating frame (26) inside, the rotating frame (26) side wall is fixedly connected with a groove plate (27), the groove plate (27) is engaged with the clamping block (23).

4. The device according to claim 3, wherein the device is characterized by, The spring (25) is provided between the groove plate (27) and the fixed block two (24), one end of the spring (25) is fixedly connected to the upper surface of the fixed block two (24), the other end of the spring (25) is fixedly connected to the side wall of the groove plate (27).

5. The device according to claim 4, wherein the device is characterized by: The upper surface of the clamping plate one (10) is fixedly connected with a controller (28), the lower surface of the rotating plate (21) is fixedly connected with a temperature detector (29), a connecting line one (30) is arranged between the controller (28) and the temperature detector (29), the upper surface of the controller (28) is provided with a warning light (31), and the controller (28) and the warning light (31) are electrically connected.

6. The device according to claim 1, wherein The pressing assembly comprises a fixed seat two (32), the side wall of the fixed seat two (32) is slidably connected in the detection table (3), the upper surface of the fixed seat two (32) is fixedly connected with a presser (33), the output end of the presser (33) is fixedly connected with a connecting pipe one (35), and the inside of the connecting pipe one (35) is fixedly connected with a pressure gauge one (34).

7. The device according to claim 6, wherein the device is characterized by, The side wall of the detection table (3) is fixedly connected with a pressure gauge two (36), and the inside of the pressure gauge two (36) is fixedly provided with a connecting pipe two (37).

8. The device according to claim 7, wherein the device is characterized by, The inside of the fixed frame (1) is fixedly connected with a water tank (38), the inside of the water tank (38) is fixedly connected with a drain pipe (39), the inside of the drain pipe (39) is slidably connected with a drain plug (40), and one end of the connecting pipe two (37) is arranged in the inside of the water tank (38).

9. The device according to claim 6, wherein, The control assembly comprises an operation screen (41), the lower surface of the operation screen (41) is fixedly connected to the side wall of the fixed frame (1), the inside of the fixed frame (1) is fixedly connected with a sensor (42), and the operation screen (41) and the sensor (42) are electrically connected.

10. The device according to claim 9, wherein the device is characterized by: The sensor (42) and the presser (33) are connected through the connecting line two (43).

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