Liquid medicine adding device

Abstract

The utility model provides a liquid medicine adding device which comprises a barrel-shaped liquid medicine barrel with a barrel body, the barrel body is provided with a transparent area, and a calibration reference liquid level line is arranged in the transparent area; the liquid level detector is arranged on the liquid medicine barrel, a detection part of the liquid level detector extends into the liquid medicine barrel, and the liquid level detector is used for detecting the liquid level of the liquid medicine barrel in a liquid level contact mode; the liquid level calibration module is fixedly arranged on the outer wall of the barrel body of the liquid medicine barrel and corresponds to the calibration reference liquid level line in the axial direction of the liquid medicine barrel, and the liquid level calibration module is used for calibrating the detection precision of the liquid level detector. According to the liquid medicine adding device, the occupied space of the liquid medicine adding device is reduced, and pipelines are simplified. A liquid level calibration module is further arranged on the outer wall of the barrel body of the liquid medicine barrel, a liquid level detection result obtained in a liquid contact dynamic liquid level detection mode is calibrated through a liquid level detection result obtained in an external liquid level detection fixing mode, and the liquid level detection precision in the liquid medicine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar cell production, and in particular to a liquid medicine adding device. BACKGROUND

[0002] For cleaning equipment and wet processing equipment in the production process of solar cells, we need to add medicine to each cleaning tank according to different process requirements in the process of mass production of silicon wafers. The wet processing equipment needs to be operated for a long time at a high frequency. In this case, the automatic liquid supplementing and medicine adding equipment provided in each cleaning tank will gradually have the problems of inaccurate measurement, reduced medicine adding accuracy, and high medicine consumption, thereby causing the pyramidal texture of the silicon wafer to exceed the standard range during acid etching and alkali polishing processes, and reducing the efficiency of the solar cell.

[0003] In addition, the liquid medicine barrel has a wide range of use scenarios, complex use conditions, and high space requirements. Currently, one liquid medicine barrel is generally used with one calibration barrel to improve the medicine supplementing accuracy. However, the use of a liquid medicine barrel with a calibration barrel makes the medicine supplementing device occupy a large space and have a complex pipeline, and the actual calibration accuracy is not ideal. CONTENT OF THE INVENTION

[0004] The present application provides a liquid medicine adding device, which comprises:

[0005] A liquid medicine barrel in a cylindrical shape and having a barrel body, the barrel body wall having a transparent area, and a calibration reference liquid level line being arranged in the transparent area;

[0006] A liquid level detector arranged on the liquid medicine barrel and having a detection part inserted into the interior of the liquid medicine barrel, the liquid level detector being configured to detect the liquid level of the liquid medicine barrel by a liquid surface contact method;

[0007] A liquid level calibration module fixedly arranged on the outer wall of the barrel body of the liquid medicine barrel and corresponding to the calibration reference liquid level line in the axial direction of the liquid medicine barrel, the liquid level calibration module being configured to calibrate the detection accuracy of the liquid level detector.

[0008] In some embodiments of the present application, the calibration reference liquid level line is provided with one or more liquid level horizontal detectors corresponding to each calibration reference liquid level line in the axial direction of the liquid medicine barrel, so that the liquid level value currently detected by the liquid level horizontal detector when the liquid level of the liquid medicine in the liquid medicine barrel reaches the calibration reference liquid level line is used as a standard liquid level value, and the standard liquid level value is used to calibrate the detected liquid level value currently detected by the liquid level detector.

[0009] In some embodiments of the present application, the calibration reference liquid level line comprises a highest liquid level line and a lowest liquid level line, and the liquid level calibration module comprises a first liquid level horizontal detector and a second liquid level horizontal detector,

[0010] The first liquid level detector is arranged corresponding to the highest liquid level line and is used for detecting the liquid level of the chemical liquid actually reaching the highest liquid level line outside the chemical liquid barrel.

[0011] The second liquid level detector is arranged corresponding to the lowest liquid level line and is used for detecting the liquid level of the chemical liquid actually reaching the lowest liquid level line outside the chemical liquid barrel.

[0012] In some embodiments of the present application, the outer wall of the barrel of the chemical liquid barrel is axially provided with a liquid level scale, and the liquid level scale comprises a highest liquid level line, a lowest liquid level line, and a plurality of liquid level scale lines arranged at equal intervals between the highest liquid level line and the lowest liquid level line.

[0013] In some embodiments of the present application, the liquid level detector is a magnetostrictive liquid level meter, and the detection part of the magnetostrictive liquid level meter comprises a detection rod and a float arranged on the outer periphery of the detection rod. The float can float up and down along the axial direction of the detection rod with the change of the liquid level of the chemical liquid.

[0014] In some embodiments of the present application, the top end of the barrel of the chemical liquid barrel is provided with a top cover abutting against the barrel. The detection part penetrates into the inside of the chemical liquid barrel through the central opening of the top cover, and the top cover is connected with the magnetostrictive liquid level meter.

[0015] In some embodiments of the present application, the bottom of the chemical liquid barrel comprises a base sealingly connected with the bottom end of the barrel of the chemical liquid barrel. The chemical liquid adding device further comprises:

[0016] An integrated chemical liquid valve group is arranged below the base and comprises an inlet valve and an outlet valve. Each valve in the integrated chemical liquid valve group is in communication with the inside of the chemical liquid barrel and is used for controlling the flow of the chemical liquid into and out of the chemical liquid barrel.

[0017] In some embodiments of the present application, the chemical liquid adding device further comprises an overflow protection module, and the overflow protection module comprises:

[0018] An overflow pipeline extends from a preset overflow liquid level in the chemical liquid barrel to the bottom of the chemical liquid barrel along the axial direction of the chemical liquid barrel and out of the base. The overflow pipeline is divided into an overflow inner pipe section in the chemical liquid barrel and an overflow outer pipe section below the base.

[0019] An overflow sensing alarm is arranged in the overflow outer pipe section and is used for alarming the overflow of the chemical liquid from the overflow pipeline.

[0020] In some embodiments of the present application, an indicator light belt is assembled on the outer wall of the chemical liquid barrel in the axial direction. The extension direction of the indicator light belt is the same as that of the liquid level scale. The indicator light belt is used for indicating the working state of the chemical liquid adding device, and the working state comprises a normal running state and an overflow state.

[0021] In some embodiments of the present application, a flow equalizing plate is arranged at the bottom of the liquid tank, the flow equalizing plate is provided with a plurality of flow holes and is arranged above the base in a spaced-apart manner, and the outer periphery of the flow equalizing plate abuts against the inner wall of the barrel of the liquid tank, so that the liquid entering the interior of the liquid tank from the liquid inlet valve is evenly distributed through the flow equalizing plate.

[0022] The liquid adding device provided by the present application uses a liquid level detector to detect the liquid level of the liquid tank in a liquid surface contact manner, so as to ensure that the change of the liquid level in the liquid tank is obtained in real time and quickly, while avoiding the increase of the floor area of the liquid adding device due to the setting of the standard tank, reducing the floor space occupied by the liquid adding device and simplifying the pipeline. In addition, a liquid level calibration module is arranged on the outer wall of the barrel of the liquid tank, and the liquid level detection result obtained by the fixed external detection liquid level manner is calibrated with the liquid level detection result obtained by the liquid contact dynamic detection liquid level manner, so as to improve the liquid level detection precision in the liquid, ensure the dosing precision, and further ensure that the production process of the solar cell sheet meets the standard requirements, improve the yield of the solar cell sheet, and optimize the battery efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 is a front view of the liquid adding device provided by the present application;

[0025] Figure 2 is Figure 1 a sectional view in the A-A direction of

[0026] Figure 3 is Figure 1 a sectional view in the C-C direction of

[0027] Figure 4 is Figure 1 a sectional view in the D-D direction of

[0028] Figure 5 is a bottom view of the liquid adding device provided by the present application.

[0029] Reference sign list:

[0030] Liquid tank-1; barrel-11; top cover-12; base-13;

[0031] Magnetostrictive liquid level meter-2; probe rod-21; float-22; circuit unit-23; union nut-24; union sleeve-25; sealing ring-26;

[0032] Liquid level calibration module-3; First liquid level detector-31; Second liquid level detector-32;

[0033] Liquid level scale -4; Highest liquid level line -41; Lowest liquid level line -42;

[0034] Inlet valve-51; Outlet valve-52;

[0035] Overflow pipe-61; Overflow inner pipe section-611; Overflow outer pipe section-612; Overflow sensor alarm-62;

[0036] Indicator light with -7;

[0037] Flow equalization plate-8; flow hole-81. Detailed Implementation

[0038] The following will be combined with the appendix Figure 1 To be continued Figure 5 The technical solution of this application is described in detail.

[0039] like Figures 1 to 5 As shown in the figure, this application provides a drug solution adding device, including:

[0040] The liquid tank 1 is cylindrical and has a body 11. The body 11 has a transparent area, and a calibration reference liquid level line is set in the transparent area.

[0041] A liquid level detector is installed on the medicine tank 1 and the detection part extends into the inside of the medicine tank 1. The liquid level detector is used to detect the liquid level of the medicine tank 1 by contact with the liquid surface.

[0042] The liquid level calibration module 3 is fixedly installed on the outer wall of the cylinder 11 of the liquid tank 1 and corresponds to the calibration reference liquid level line in the axial upward position of the liquid tank 1. The liquid level calibration module 3 is used to calibrate the detection accuracy of the liquid level detector.

[0043] The chemical solution addition device provided in this application uses a level detector to detect the liquid level in the chemical solution tank 1 via liquid surface contact. This ensures real-time and rapid acquisition of liquid level changes in the chemical solution tank 1 while avoiding the need for a standard tank, thus reducing the footprint of the chemical solution addition device and simplifying the piping. A level calibration module 3 is also installed on the outer wall of the cylinder 11 of the chemical solution tank 1. This module calibrates the liquid level detection results obtained by the external fixed level detection method against the liquid level detection results obtained by the liquid contact dynamic level detection method. This improves the accuracy of liquid level detection in the chemical solution, ensures accurate dosing, and ultimately ensures that the solar cell production process meets standard requirements, improves the yield of solar cells, and optimizes cell efficiency.

[0044] In some embodiments of the present application, the barrel 11 is fully transparent, and the barrel 11 is transparent from the top end to the bottom end, so that the technician can observe the liquid in the barrel from the outside.

[0045] In some other embodiments of the present application, the barrel 11 has transparent regions and non-transparent regions from the top end to the bottom end, and the calibration reference liquid level line is arranged in the transparent region, and the liquid level calibration module 3 is arranged corresponding to the calibration reference liquid level line in the transparent region. When the liquid level in the barrel 11 is in the transparent region, the technician can observe the liquid level from the outside.

[0046] In some embodiments of the present application, the calibration reference liquid level line is one or more, and the liquid level calibration module 3 includes a liquid level detector corresponding to each calibration reference liquid level line in the axial direction of the liquid barrel 1, so that when the liquid level of the liquid barrel 1 reaches the calibration reference liquid level line, the liquid level value currently detected by the liquid level detector is used as a standard liquid level value, and the standard liquid level value is used to calibrate the detected liquid level value currently detected by the liquid level detector.

[0047] In some embodiments of the present application, the calibration reference liquid level line includes a highest liquid level line 41 and a lowest liquid level line 42, and the liquid level calibration module 3 includes a first liquid level detector 31 and a second liquid level detector 32.

[0048] The first liquid level detector 31 is arranged corresponding to the highest liquid level line 41, and is used to detect the actual liquid level reaching the highest liquid level line 41 outside the liquid barrel 1.

[0049] The second liquid level detector 32 is arranged corresponding to the lowest liquid level line 42, and is used to detect the actual liquid level reaching the lowest liquid level line 42 outside the liquid barrel 1.

[0050] In some specific examples, the liquid level detector is calibrated after the liquid barrel 1 is filled with liquid for a period of time. The liquid level in the liquid barrel 1 reaches the highest liquid level line 41, and the first liquid level detector 31 detects the actual liquid level reaching the highest liquid level line 41 outside the liquid barrel 1 to obtain a first standard liquid level value. At the same time, the liquid level detector currently detects a first detected liquid level value. The first detected liquid level value is compared with the first standard liquid level value, and if the first detected liquid level value is different from the first standard liquid level value, the detection error of the liquid level detector is adjusted to improve the detection accuracy. The calibration process of the second liquid level detector 32 is the same as that of the first liquid level detector 31, and will not be described again.

[0051] The arrangement of multiple calibration reference liquid level lines and liquid level detectors can improve the calibration quality and the liquid level detection accuracy.

[0052] In some examples, the first liquid level detector 31 and the second liquid level detector 32 can be selected from the tube-mounted liquid level detector of OMRON. The tube-mounted liquid level detector can detect the liquid level in a transparent tube-shaped or barrel-shaped device, and the tube-mounted liquid level detector is mounted on the outer wall of the liquid tank 1 by, for example, a strap or the like.

[0053] In some embodiments of the present application, the outer wall of the barrel 11 of the liquid tank 1 is provided with a liquid level scale 4 in the axial direction, and the liquid level scale 4 includes a highest liquid level line 41, a lowest liquid level line 42, and a plurality of liquid level scale lines arranged at equal intervals between the highest liquid level line 41 and the lowest liquid level line.

[0054] In some embodiments of the present application, the liquid level detector is a magnetostrictive liquid level meter 2, and the detection part of the magnetostrictive liquid level meter 2 includes a detection rod 21 and a float 22 arranged on the outer periphery of the detection rod 21. The float 22 can float up and down along the detection rod 21 in the axial direction as the liquid level changes.

[0055] In some specific examples, the magnetostrictive liquid level meter 2 further includes a circuit unit 23 arranged at the top end of the detection rod 21. The detection rod 21 has the float 22 arranged thereon, and the float 22 moves up and down along the detection rod 21 as the liquid level changes. When the magnetic field of the magnet of the float 22 intersects the current magnetic field of the circuit unit 23, a special pulse can be obtained. According to the waveguide principle, the time difference between the starting pulse and the special pulse is converted into a pulse signal, and the actual position of the float 22 can be calculated to measure the liquid level.

[0056] In some embodiments of the present application, the top end of the barrel 11 of the liquid tank 1 is provided with a top cover 12 abutting the barrel 11, and the detection part is inserted into the inside of the liquid tank 1 through the central opening of the top cover 12. The top cover 12 is connected to the magnetostrictive liquid level meter 2.

[0057] In some specific embodiments, the bottom end of the protective circuit unit 23 is connected to the ferrule sleeve 25, and a sealing ring 26 is arranged at the connection part to prevent liquid leakage. The ferrule nut 24 is threadedly connected to the protective circuit unit 23 and the ferrule sleeve 25, and the ferrule nut 24 tightly holds the protective circuit unit 23 and the ferrule sleeve 25. The magnetostrictive liquid level meter 2 is connected in a split ferrule manner and is fixed on the top cover 12, which is very convenient to disassemble, replace and maintain.

[0058] In some embodiments of the present application, the bottom of the liquid tank 1 includes a base 13 sealingly connected to the bottom end of the barrel 11 of the liquid tank 1, and the liquid adding device further includes:

[0059] The integrated liquid valve group is arranged below the base 13 and includes an inlet valve 51 and an outlet valve 52. Each valve in the integrated liquid valve group is in communication with the inside of the liquid tank 1 and is used to control the inflow and outflow of the liquid tank 1.

[0060] In some embodiments of the present application, the liquid medicine adding device further comprises an overflow protection module, and the overflow protection module comprises:

[0061] An overflow pipeline 61 extends from a preset overflow liquid level in the liquid medicine barrel 1 to the bottom of the liquid medicine barrel 1 along the axial direction of the liquid medicine barrel 1 and extends out of the base 13, and the overflow pipeline 61 is divided into an overflow inner pipeline section 611 in the liquid medicine barrel 1 and an overflow outer pipeline section 612 below the base 13.

[0062] An overflow sensing alarm 62 is arranged on the overflow outer pipeline section 612 and is used for alarming overflow of the liquid medicine from the overflow pipeline 61.

[0063] In some examples, the overflow inner pipeline section 611 is attached to the inner wall of the liquid medicine barrel 1.

[0064] In some embodiments of the present application, the overflow is accompanied by audible and light alarms, which are not limited to photoelectric, capacitive, ultrasonic, etc., and are selected according to the medium.

[0065] In some embodiments of the present application, an indicator light strip 7 is arranged on the outer wall of the liquid medicine barrel 1 in the axial direction, the extension direction of the indicator light strip 7 is the same as the extension direction of the liquid level scale 4, and the indicator light strip 7 is used for indicating the working state of the liquid medicine adding device, and the working state includes a normal running state and an overflow state. When the overflow sensing alarm 62 issues an overflow alarm, the indicator light strip 7 flashes red and is in an overflow state, and an external alarm is given. When the liquid medicine in the liquid medicine adding device flows out normally, the indicator light strip 7 flashes green and is in a normal running state.

[0066] In some embodiments of the present application, a flow equalizing plate 8 is arranged on the inner bottom of the liquid medicine barrel 1, the flow equalizing plate 8 is provided with a plurality of flow-through holes 81 and is arranged above the base 13 in a spaced-apart manner, and the outer periphery of the flow equalizing plate 8 abuts against the inner wall of the barrel body 11 of the liquid medicine barrel 1, so that the liquid medicine entering the inside of the liquid medicine barrel 1 from the liquid inlet valve 51 flows uniformly through the flow equalizing plate 8.

[0067] In these embodiments, the flow equalizing plate 8 arranged on the inner bottom of the liquid medicine barrel 1 can eliminate disturbance and impact on the liquid level detector during continuous medicine adding.

[0068] The liquid medicine adding device provided by the present application uses a liquid level detector to detect the liquid level of the liquid medicine barrel 1 in a liquid surface contact manner, which ensures that the change of the liquid level in the liquid medicine barrel 1 is obtained in real time and quickly, avoids increase of the floor area occupied by the liquid medicine adding device due to setting of a standard barrel, reduces the floor space occupied by the liquid medicine adding device, and simplifies the pipeline. Furthermore, a liquid level calibration module 3 is arranged on the outer wall of the barrel body 11 of the liquid medicine barrel 1, the liquid level detection result obtained by the fixed external detection liquid level manner is calibrated with the liquid level detection result obtained by the liquid contact dynamic detection liquid level manner, the liquid level detection precision in the liquid medicine is improved, the medicine adding precision is ensured, and then the solar cell sheet production process meets the standard requirements, the solar cell sheet yield is improved, and the battery efficiency is optimized.

[0069] When the liquid medicine adding device is used to supplement liquid, the outlet valve 52 is closed, the inlet valve 51 is opened, the liquid medicine enters the liquid medicine barrel 1 through the inlet valve 51 and the flow uniforming plate 8, until the liquid level reaches the highest liquid level line 41, the inlet valve 51 is closed, and the medicine adding is stopped. The outlet valve 52 is opened, the liquid medicine is supplemented to the general tank in a large dose through the high-precision measurement of the magnetostrictive liquid level meter 2 according to the amount of medicine needed to be supplemented according to the wet processing technology of the equipment, and through the medicine pipeline connected with the outlet valve 52.

[0070] When the outlet valve 52 fails, the liquid medicine in the liquid medicine barrel 1 flows out from the overflow pipeline 61 and passes through the overflow sensing alarm 62, and the overflow sensing alarm 62 sends an overflow alarm. The overflow outer pipe section 612 of the overflow pipeline 61 is directly connected to the waste pipeline, and after the overflow sensing alarm 62 sends an overflow alarm, the liquid medicine barrel 1 outputs a signal to the upper computer for processing, prompting the production personnel to solve the problem, and after the fault is removed, the alarm prompt is closed.

[0071] When the liquid medicine adding device is used for a long time, the precision is reduced, and the liquid level calibration module 3 is used for calibration to improve the accuracy of detecting the magnetostrictive liquid level meter 2.

[0072] The embodiment of the present application integrates the inlet valve 51, the outlet valve 52, the overflow outer pipe section 612 and the overflow sensing alarm 62 at the bottom of the liquid medicine adding device, simplifies the pipeline design and saves space. The liquid medicine enters uniformly through the flow uniforming plate 8, the liquid level in the barrel is detected by the magnetostrictive liquid level meter 2, precise liquid supplement is realized, which is beneficial to quantitatively control the output of liquid medicine such as acid, alkali and additive, simplify the operation steps and improve the efficiency. The liquid level calibration module 3 is provided to solve the problems of inaccurate measurement, inaccurate liquid medicine feeding amount and redundant detection module after the liquid medicine barrel 1 is used for a long time, large occupied volume and low integration. The liquid medicine adding device of the present application has high integration, complete functions and small occupied space.

[0073] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical range disclosed in the present application can be easily thought by those skilled in the art, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A chemical liquid adding device characterized by comprising: The application relates to a liquid medicine barrel and a liquid medicine adding device. The liquid medicine barrel is cylindrical and has a barrel body with a transparent area, wherein a calibration reference liquid level line is arranged in the transparent area. A liquid level detector is arranged on the liquid medicine barrel and detects a part of the liquid level detector into the inside of the liquid medicine barrel, and the liquid level detector detects the liquid level of the liquid medicine barrel through liquid surface contact. A liquid level calibration module is fixedly arranged on the outer wall of the barrel body of the liquid medicine barrel and corresponds to the calibration reference liquid level line in the axial direction of the liquid medicine barrel, and the liquid level calibration module is used for calibrating the detection accuracy of the liquid level detector.

2. The liquid medicine adding apparatus according to claim 1, characterized by The calibration reference liquid level line is provided with one or more liquid level calibration modules corresponding to each calibration reference liquid level line in the axial direction of the liquid medicine barrel, so that when the liquid level of the liquid medicine barrel reaches the calibration reference liquid level line, the liquid level value detected by the liquid level detector at present is used as a standard liquid level value, and the standard liquid level value is used for calibrating the detection liquid level value detected by the liquid level detector at present.

3. The liquid medicine adding apparatus according to claim 2, characterized by The calibration reference liquid level line comprises a highest liquid level line and a lowest liquid level line, and the liquid level calibration module comprises a first liquid level detector and a second liquid level detector. The first liquid level detector is arranged corresponding to the highest liquid level line and is used for detecting the liquid level actually reaching the highest liquid level line outside the liquid medicine barrel. The second liquid level detector is arranged corresponding to the lowest liquid level line and is used for detecting the liquid level actually reaching the lowest liquid level line outside the liquid medicine barrel.

4. The liquid medicine adding apparatus according to claim 3, characterized in that, The outer wall of the barrel body of the liquid medicine barrel is provided with a liquid level scale in the axial direction, and the liquid level scale comprises the highest liquid level line, the lowest liquid level line and a plurality of liquid level scale lines arranged at equal intervals between the highest liquid level line and the lowest liquid level line.

5. The liquid medicine adding apparatus according to claim 1, characterized in that, The liquid level detector is a magnetostrictive liquid level meter, the detection part of the magnetostrictive liquid level meter comprises a detection rod and a float arranged on the outer periphery of the detection rod, and the float can float up and down along the axial direction of the detection rod with the change of the liquid level.

6. The liquid medicine adding apparatus according to claim 5, characterized by The top end of the barrel body of the liquid medicine barrel is provided with a top cover abutting against the barrel body, the detection part is inserted into the inside of the liquid medicine barrel through the central opening of the top cover, and the top cover is connected with the magnetostrictive liquid level meter.

7. The liquid medicine adding apparatus according to claim 1, characterized by The bottom of the liquid medicine barrel comprises a base sealingly connected with the bottom end of the barrel body of the liquid medicine barrel, and the liquid medicine adding device further comprises: An integrated liquid valve group is arranged below the base and comprises an inlet valve and an outlet valve, each valve in the integrated liquid valve group is communicated with the inside of the liquid medicine barrel and is used for controlling the inflow and outflow of the liquid medicine in the liquid medicine barrel.

8. The liquid medicine adding apparatus according to claim 7, characterized in that, The liquid medicine adding device further comprises an overflow protection module, and the overflow protection module comprises: An overflow pipeline extends from a preset overflow liquid level in the liquid medicine barrel to the bottom of the liquid medicine barrel along the axial direction of the liquid medicine barrel and out of the base, and is divided into an overflow inner pipe section in the liquid medicine barrel and an overflow outer pipe section below the base; An overflow sensing alarm is arranged on the overflow outer pipe section and is used for alarming the overflow of the liquid medicine from the overflow pipeline.

9. The liquid medicine adding apparatus according to claim 4, characterized in that, The outer wall of the liquid barrel is axially provided with an indicating lamp strip, the extending direction of the indicating lamp strip is the same as the extending direction of the liquid level scale, the indicating lamp strip is used for indicating the working state of the liquid adding device, and the working state includes a normal running state and an overflow state.

10. The liquid medicine adding apparatus according to claim 7, characterized by A flow uniformizing plate is arranged at the bottom of the liquid barrel, the flow uniformizing plate is provided with a plurality of flow holes and is arranged above the base in a spaced manner, and the outer periphery of the flow uniformizing plate is in abutment with the inner wall of the barrel body of the liquid barrel, so that the liquid entering the inside of the liquid barrel from the liquid inlet valve is uniformly flowed through the flow uniformizing plate.

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