Liquid drainage mechanism and photovoltaic cleaning device

Abstract

The utility model relates to the technical field of solar cells, in particular to a liquid drainage mechanism and a photovoltaic cleaning device. The storage tank is used for storing liquid discharged from the process tank, the first liquid discharge pipeline and the second liquid discharge pipeline are both communicated with the storage tank, the first detection part is arranged in the storage tank and can detect the type of the liquid in the storage tank, the first control assembly is arranged on the first liquid discharge pipeline, and the second control assembly is arranged on the second liquid discharge pipeline. The first control assembly and the second control assembly are electrically connected with the first detection part, when the first detection part detects that the liquid type in the storage groove is first liquid, the first control assembly controls the first liquid to be discharged from the first liquid discharging pipeline, and when the first detection part detects that the liquid type in the storage groove is second liquid, the second control assembly controls the second liquid to be discharged from the second liquid discharging pipeline. The second control assembly controls the second liquid to be discharged from the second liquid discharge pipeline, so that the process liquid and the waste liquid are automatically and separately discharged, manual intervention is not needed in the whole process, and safety risks are not prone to being generated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar cells, in particular to a liquid discharge mechanism and a photovoltaic cleaning device. BACKGROUND

[0002] Solar cell technology is mainly based on the photoelectric effect of semiconductors, and involves the technology of converting solar energy into electrical energy, which is the core of photovoltaic power generation. Among them, the photovoltaic cleaning device plays a crucial role in the production process of solar cells. For example, in the steps of solar cell texturing, alkali etching, and etching, etc., the process tank in the photovoltaic cleaning device needs to be injected with acid and alkali process liquids to clean the silicon wafer. After the process is completed, the process tank needs to be cleaned and waste liquid is generated. The process liquid and waste liquid need to be discharged separately.

[0003] The existing discharge mechanism generally uses manual discharge, which is easy to cause misdischarge. During the operation process, if the discharge valve is forgotten to be opened or closed, the waste liquid of the washing tank will be discharged into the pipeline containing high-concentration process liquid, increasing the cost of waste liquid treatment. Or, the high-concentration acid and alkali process liquid flowing into the low-concentration waste liquid pipeline can easily cause environmental accidents. CONTENT OF THE INVENTION

[0004] The present application discloses a liquid discharge mechanism and a photovoltaic cleaning device, which can automatically discharge high-concentration acid and alkali process liquid and low-concentration acid and alkali waste liquid separately.

[0005] In order to achieve the above purpose, in a first aspect, the present application discloses a liquid discharge mechanism, comprising:

[0006] A storage tank for storing liquid discharged from the process tank;

[0007] A first liquid discharge pipeline connected to the storage tank;

[0008] A second liquid discharge pipeline connected to the storage tank;

[0009] A first detection member provided in the storage tank, the first detection member being capable of detecting the type of liquid in the storage tank;

[0010] A first control assembly provided in the first liquid discharge pipeline, the first control assembly being electrically connected to the first detection member, and the first control assembly being configured to control the first liquid to be discharged from the first liquid discharge pipeline when the first detection member detects that the type of liquid in the storage tank is the first liquid;

[0011] a second control component disposed in the second liquid discharge conduit, the second control component being electrically connected with the first detection component, and the second control component being configured to control the second liquid to be discharged from the second liquid discharge conduit when the first detection component detects that the liquid in the storage tank is the second liquid.

[0012] As an optional embodiment, the first control component comprises a first liquid pumping component and a second detection component, the second detection component being disposed on a wall of the first liquid discharge conduit and being configured to detect a liquid level in the first liquid discharge conduit, and the first liquid pumping component being disposed in the first liquid discharge conduit and being electrically connected with the first detection component and the second detection component, such that when the first detection component detects that the liquid in the storage tank is the first liquid and the second detection component detects that the liquid level in the first liquid discharge conduit reaches a first preset position, the first liquid pumping component pumps the first liquid.

[0013] The second control component comprises a second liquid pumping component and a third detection component, the third detection component being disposed on a wall of the second liquid discharge conduit and being configured to detect a liquid level in the second liquid discharge conduit, and the second liquid pumping component being disposed in the second liquid discharge conduit and being electrically connected with the first detection component and the third detection component, such that when the first detection component detects that the liquid in the storage tank is the second liquid and the third detection component detects that the liquid level in the second liquid discharge conduit reaches a second preset position, the second liquid pumping component pumps the second liquid.

[0014] As an optional embodiment, the liquid discharging mechanism further comprises a first valve disposed in the first liquid discharge conduit, and the first valve is opened when the liquid level in the first liquid discharge conduit reaches the first preset position, so as to enable the first liquid to be discharged from the first liquid discharge conduit.

[0015] The liquid discharging mechanism further comprises a second valve disposed in the second liquid discharge conduit, and the second valve is opened when the liquid level in the second liquid discharge conduit reaches the second preset position, so as to enable the second liquid to be discharged from the second liquid discharge conduit.

[0016] As an optional implementation, the first valve comprises a first float and a first stopper, the first stopper is arranged in the first liquid discharge pipe, the first float is arranged on the first stopper, the second detection member is arranged corresponding to the position of the first float on the first stopper, the first float is configured to have a density less than that of the liquid, when the liquid level in the first liquid discharge pipe reaches the first preset position, the first float leaves the first stopper, so that the first float leaves the detection range of the second detection member;

[0017] The second valve comprises a second float and a second stopper, the second stopper is arranged in the second liquid discharge pipe, the second float is arranged on the second stopper, the third detection member is arranged corresponding to the position of the second float on the second stopper, the second float is configured to have a density less than that of the liquid, when the liquid level in the second liquid discharge pipe reaches the second preset position, the second float leaves the second stopper, so that the second float leaves the detection range of the third detection member.

[0018] As an optional implementation, the first liquid discharge pipe comprises a first detection pipe and a first liquid discharge pipe, the first detection pipe is communicated with the bottom of the storage tank and extends in the vertical direction, the first stopper is arranged on the inner wall of the first detection pipe, the first liquid discharge pipe is communicated with the first detection pipe, the connection between the first liquid discharge pipe and the first detection pipe is arranged higher than the first stopper, and the first liquid pumping member is arranged in the first liquid discharge pipe.

[0019] The second liquid discharge pipe comprises a second detection pipe and a second liquid discharge pipe, the second detection pipe is communicated with the bottom of the storage tank and extends in the vertical direction, the bottom of the second detection pipe is communicated with the bottom of the first detection pipe, the second stopper is arranged on the inner wall of the second detection pipe, the second liquid discharge pipe is communicated with the second detection pipe, the connection between the second liquid discharge pipe and the second detection pipe is arranged higher than the second stopper, and the second liquid pumping member is arranged in the second liquid discharge pipe.

[0020] As an optional implementation, in the vertical direction, the first stopper and the second stopper are arranged at the same height.

[0021] As an optional implementation, the liquid discharge mechanism further comprises a first blocking net and a second blocking net, the first blocking net is arranged at the connection between the first detection pipe and the first liquid discharge pipe, and the first blocking net is configured to block the first valve from entering the first liquid discharge pipe when the first liquid pumping member pumps liquid.

[0022] The second blocking net is arranged at the connection between the second detection pipeline and the second liquid discharge pipeline, and is configured to block the second valve from entering the second liquid discharge pipeline when the second liquid suction member sucks liquid.

[0023] As an optional implementation, the first detection member is arranged at the bottom of the storage tank.

[0024] As an optional implementation, the first floating member and the second floating member are both spherical, the first stop member comprises a spherical surface matched with the outer surface of the first floating member, and the bottom of the first stop member is provided with an opening configured to allow the first liquid to pass through.

[0025] In a second aspect, the application discloses a photovoltaic cleaning device, comprising:

[0026] A process tank;

[0027] The liquid discharge mechanism according to any one of the first aspect, the liquid discharge mechanism is communicated with the bottom of the process tank;

[0028] A communication pipe is communicated between the process tank and the storage tank, and an electromagnetic valve is arranged on the communication pipe, so that when the electromagnetic valve is opened, the liquid in the process tank can flow into the storage tank.

[0029] Compared with the prior art, the application has the following beneficial effects:

[0030] The liquid discharge mechanism provided by the application, the storage tank is used for storing the liquid discharged from the process tank, the first liquid discharge pipeline and the second liquid discharge pipeline are both communicated with the storage tank, the first detection member is arranged in the storage tank and can detect the type of the liquid in the storage tank, the first control assembly is arranged in the first liquid discharge pipeline, the second control assembly is arranged in the second liquid discharge pipeline, the first control assembly and the second control assembly are both electrically connected with the first detection member, when the first detection member detects that the type of the liquid in the storage tank is the first liquid, the first control assembly controls the first liquid to be discharged from the first liquid discharge pipeline, and when the first detection member detects that the type of the liquid in the storage tank is the second liquid, the second control assembly controls the second liquid to be discharged from the second liquid discharge pipeline. The first liquid is a high-concentration acid-base process liquid, and the second liquid is a low-concentration acid-base waste liquid, so that the process liquid and the waste liquid can be automatically discharged respectively, manual intervention is not needed in the whole process, safety risks are not easy to occur, and the safety and stable operation of the photovoltaic cleaning device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0032] Figure 1 Structure diagram of a prior art liquid discharge mechanism;

[0033] Figure 2 Structure diagram of a liquid discharge mechanism disclosed in the embodiments of the present application;

[0034] Figure 3 Structure diagram of a photovoltaic cleaning device disclosed in the embodiments of the present application.

[0035] Explanation of reference signs:

[0036] 100-liquid discharge mechanism; a-process liquid discharge pipeline; b-waste liquid discharge pipeline; 1-storage tank; 2-first liquid discharge pipeline; 21-first detection pipeline; 211-first blocking net; 22-first liquid discharge pipeline; 3-second liquid discharge pipeline; 31-second detection pipeline; 311-second blocking net; 32-second liquid discharge pipeline; 4-first detection member; 5-first control assembly; 51-first liquid pumping member; 52-second detection member; 6-second control assembly; 61-second liquid pumping member; 62-third detection member; 7-first valve; 71-first floating member; 72-first stop member; 72a-opening; 8-second valve; 81-second floating member; 82-second stop member; 200-photovoltaic cleaning device; 9-process tank; 91-communication pipeline; 911-solenoid valve. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments 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 other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0038] In the present application, the terms "upper", "lower", "bottom", "inner", "outer", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used for better description of the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] And, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances.

[0040] In addition, the terms "provided", "provided with", and "connected" should be broadly understood. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures can be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0042] The solar cell technology is mainly based on the photoelectric effect of semiconductors, which involves the technology of converting solar energy into electrical energy, which is the core of photovoltaic power generation. Among them, the photovoltaic cleaning device plays a crucial role in the production process of solar cells, for example, in the steps of solar cell texturing, alkali etching, etching, etc., the process tank in the photovoltaic cleaning device needs to be injected with acid and alkali process liquid to clean the silicon wafer. After the process is completed, the process tank needs to be cleaned and waste liquid is generated, and the process liquid and waste liquid need to be discharged separately.

[0043] As Figure 1 , the existing discharge mechanism generally adopts manual discharge, and the discharge mechanism includes a process liquid discharge pipeline a and a waste liquid discharge pipeline b, and valves are arranged in the two pipelines. When the process tank 9 is filled with process liquid, the valve in the process liquid discharge pipeline a is opened to discharge the process liquid; when the process tank 9 is filled with waste liquid, the valve in the waste liquid discharge pipeline b is opened to discharge the waste liquid, thereby realizing the separate discharge of the process liquid and the waste liquid. However, such a discharge mechanism is prone to misdischarge. During operation, if the discharge valve is forgotten to be opened or closed, the waste liquid in the washing tank will be discharged into the pipeline containing the process liquid with a higher concentration, thereby increasing the cost of waste liquid treatment, or the high-concentration acid and alkali process liquid will flow into the low-concentration waste liquid pipeline, which is prone to cause environmental accidents.

[0044] Therefore, the embodiment of the present application discloses a discharge mechanism, which realizes automatic discharge of high-concentration acid and alkali process liquid and low-concentration acid and alkali waste liquid, and does not need manual intervention throughout the process, thereby reducing the risk of safety accidents.

[0045] The technical solutions of the present application will be further described below in combination with embodiments and drawings.

[0046] Please refer to Figure 2 , Figure 2 The structure schematic diagram of the liquid discharge mechanism 100 is disclosed in the embodiments of the present application. The liquid discharge mechanism 100 disclosed in the embodiments of the present application comprises:

[0047] The storage tank 1 is used to store the liquid discharged from the process tank 9, i.e. the first liquid or the second liquid. The first liquid is a higher-concentration acid-base process liquid used for cleaning silicon wafers, and the second liquid is a lower-concentration acid-base waste liquid after cleaning the process tank 9;

[0048] The first liquid discharge pipeline 2 is connected to the storage tank 1;

[0049] The second liquid discharge pipeline 3 is connected to the storage tank 1;

[0050] The first detection member 4 is arranged in the storage tank 1. The first detection member 4 can detect the type of liquid in the storage tank 1 and whether there is liquid in the storage tank 1;

[0051] The first control assembly 5 is arranged in the first liquid discharge pipeline 2. The first control assembly 5 is electrically connected to the first detection member 4. The first control assembly 5 is configured to control the first liquid to be discharged from the first liquid discharge pipeline 2 when the first detection member 4 detects that the type of liquid in the storage tank 1 is the first liquid;

[0052] The second control assembly 6 is arranged in the second liquid discharge pipeline 3. The second control assembly 6 is electrically connected to the first detection member 4. The second control assembly 6 is configured to control the second liquid to be discharged from the second liquid discharge pipeline 3 when the first detection member 4 detects that the type of liquid in the storage tank 1 is the second liquid.

[0053] In this way, the type of liquid in the storage tank 1 is detected by the first detection member 4, and the first control assembly 5 and the second control assembly 6 can automatically control the first liquid and the second liquid to be discharged from the corresponding discharge pipelines, respectively. This automatic discharge process does not require manual intervention, thereby improving work efficiency. Moreover, since manual operation is not required, the opportunity for the operator to come into contact with dangerous liquids such as acid and alkali is reduced, thereby reducing the safety risk. The automatic liquid discharge process can ensure timely discharge of process liquid and waste liquid, which helps to maintain stable operation of the photovoltaic cleaning device 200. By discharging different types of liquids respectively, on the one hand, the waste liquid is more effectively treated and managed, thereby reducing environmental pollution, and on the other hand, the higher-concentration acid-base process liquid can be recycled or reused, thereby improving resource utilization.

[0054] It can be understood that the first detection member 4 can be any possible detection element such as an optical sensor, an acoustic sensor, etc. In a first possible implementation, the optical sensor identifies the liquid type by analyzing the absorption, scattering or refraction characteristics of the light by the liquid, can provide a high-precision detection result, the light itself has a fast propagation speed, the circuit of the optical sensor is composed of electronic components and does not contain mechanical working time, so the response time is very short; in a second possible implementation, the acoustic sensor identifies the liquid type by analyzing the propagation characteristics of the sound wave in the liquid, the sound wave such as ultrasonic wave can penetrate the liquid more easily and is not affected by dust, dirt or high humidity level, and can still work efficiently in harsh environments (such as dust or strong light conditions), which is not limited in the embodiment.

[0055] As an optional implementation, in combination with Figure 2 The first control assembly 5 includes a first liquid pumping member 51 and a second detection member 52, the second detection member 52 is arranged on the pipe wall of the first liquid discharge pipe 2 and is used to detect the liquid level in the first liquid discharge pipe 2, and the first liquid pumping member 51 is arranged in the first liquid discharge pipe 2 and is electrically connected with the first detection member 4 and the second detection member 52, so that when the first detection member 4 detects that the liquid type in the storage tank 1 is the first liquid and the second detection member 52 detects that the liquid level in the first liquid discharge pipe 2 reaches the first preset position, the first liquid pumping member 51 pumps the first liquid.

[0056] The second control assembly 6 includes a second liquid pumping member 61 and a third detection member 62, the third detection member 62 is arranged on the pipe wall of the second liquid discharge pipe 3 and is used to detect the liquid level in the second liquid discharge pipe 3, and the second liquid pumping member 61 is arranged in the second liquid discharge pipe 3 and is electrically connected with the first detection member 4 and the third detection member 62, so that when the first detection member 4 detects that the liquid type in the storage tank 1 is the second liquid and the third detection member 62 detects that the liquid level in the second liquid discharge pipe 3 reaches the second preset position, the second liquid pumping member 61 pumps the second liquid.

[0057] For the first control assembly 5, when the first detection member 4 determines that the liquid in the storage tank 1 is the first liquid, the second detection member 52 needs to detect that the liquid level in the first liquid discharge pipe 2 reaches the first preset position before the first liquid pumping member 51 pumps the first liquid. This avoids the problem of incomplete or low-efficiency pumping caused by pumping when the liquid level in the pipe does not reach the appropriate height. Similarly, for the second control assembly 6, when the first detection member 4 determines that the liquid is the second liquid and the third detection member 62 detects that the liquid level in the second liquid discharge pipe 3 reaches the second preset position, the second liquid pumping member 61 pumps the second liquid, ensuring the accuracy and efficiency of pumping.

[0058] The operation of the liquid pumping member depends not only on the detection of the type of liquid, but also on the liquid level in the pipeline. In the first liquid discharge pipeline 2, the liquid is pumped only when the liquid level reaches the first preset position, which helps to prevent the first liquid from flowing back to the storage tank 1 due to other factors (such as pressure fluctuations, etc.) when the liquid level in the pipeline is low. The same applies to the second liquid discharge pipeline 3. By controlling the pumping of the liquid through level detection, the occurrence of the second liquid being mistakenly discharged into the first liquid discharge pipeline 2 or other abnormal discharges can be reduced, preventing the disordered flow or interference of different liquids in the pipeline during the pumping process, thereby improving the stability of the entire liquid discharge mechanism 100 and the photovoltaic cleaning device 200 containing the liquid discharge mechanism 100, and making the operation of the entire liquid discharge system more orderly.

[0059] It should be noted that the first liquid pumping member 51 and the second liquid pumping member 61 are any possible liquid pumping members such as water pumps, and the present embodiment does not limit them.

[0060] It should be noted that the second detection member and the third detection member are any possible detection elements such as optical sensors and acoustic sensors, and the present embodiment does not limit them.

[0061] In some possible implementations, the liquid discharge mechanism 100 further includes a first valve 7 disposed in the first liquid discharge pipeline 2. When the first detection member 4 detects that the type of liquid in the storage tank 1 is the first liquid, and the second detection member 52 detects that the liquid level in the first liquid discharge pipeline 2 reaches the first preset position, the first valve 7 is opened, and the first liquid pumping member 51 pumps the first liquid to discharge it from the first liquid discharge pipeline 2.

[0062] The liquid discharge mechanism 100 further includes a second valve 8 disposed in the second liquid discharge pipeline 3. When the first detection member 4 detects that the type of liquid in the storage tank 1 is the second liquid, and the third detection member 62 detects that the liquid level in the second liquid discharge pipeline 3 reaches the second preset position, the second valve 8 is opened, and the second liquid pumping member 61 pumps the second liquid to discharge it from the second liquid discharge pipeline 3.

[0063] The first valve 7 and the second valve 8 further ensure the timing of controlling the discharge of the liquid. The first valve 7 cooperates with the first liquid pumping member 51 to work. When the first liquid level reaches the preset position, the first valve 7 is opened, and then the first liquid pumping member 51 pumps the first liquid. This avoids problems that may be caused by early or late discharge of the liquid, such as incomplete discharge of the liquid due to early discharge, and affects the efficiency of the entire liquid discharge system due to late discharge. The same applies to the second valve 8. The opening of the first valve 7 and the second valve 8 is coordinated with the work of the detection members and the liquid pumping members, which helps to prevent abnormal flow of the liquid in the pipeline, such as backflow or unstable flow, thereby enhancing the stability of the entire liquid discharge mechanism 100 and the photovoltaic cleaning device 200.

[0064] In some embodiments, in combination with Figure 2 The first valve 7 comprises a first floating member 71 and a first stop member 72, the first stop member 72 is arranged in the first liquid discharge pipe 2, and the first floating member 71 is arranged on the first stop member 72. The second detection member 52 is arranged in position corresponding to the position of the first floating member 71 on the first stop member 72. The first floating member 71 is configured to have a density less than that of the liquid, i.e. the first floating member 71 can float on the surface of the liquid. When the liquid level in the first liquid discharge pipe 2 reaches the first preset position, the first floating member 71 leaves the first stop member 72, so that the first floating member 71 leaves the detection range of the second detection member 52. The first detection member 4 detects that the liquid is the first liquid, and the first liquid pumping member 51 is started and pumps the first liquid in the first liquid discharge pipe 2.

[0065] The second valve 8 comprises a second floating member 81 and a second stop member 82, the second stop member 82 is arranged in the second liquid discharge pipe 3, and the second floating member 81 is arranged on the second stop member 82. The third detection member 62 is arranged in position corresponding to the position of the second floating member 81 on the second stop member 82. The second floating member 81 is configured to have a density less than that of the liquid, i.e. the second floating member 81 can also float on the surface of the liquid. When the liquid level in the second liquid discharge pipe 3 reaches the second preset position, the second floating member 81 leaves the second stop member 82, so that the second floating member 81 leaves the detection range of the third detection member 62. The first detection member 4 detects that the liquid is the second liquid, and the second liquid pumping member 61 is started and pumps the second liquid in the second liquid discharge pipe 3.

[0066] In this way, the first liquid and the second liquid are discharged separately. The structure of the floating member and the stop member is relatively simple, and does not need complex electronic control elements to control the opening of the valve separately, but uses the natural relationship between the liquid buoyancy and the liquid level. The simple structure makes the mechanism less prone to failure, and improves the reliability of the entire liquid discharge mechanism 100. In the long-term operation process, the situation that the valve cannot be normally opened or closed due to the failure of the electronic elements is less likely to occur, thereby ensuring the stable operation of the photovoltaic cleaning device 200.

[0067] In addition, the first floating member 71 is arranged in position corresponding to the second detection member 52, and the valve is opened only when the liquid level reaches a certain height to make the first floating member 71 leave. This prevents the valve from being opened by mistake due to other interference factors when the liquid level does not reach the requirement. For high-concentration acid-base process liquid, the mistaken opening of the valve may cause liquid leakage, which may harm the equipment and the environment. This structure effectively avoids such risks.

[0068] It can be understood that the first floating member 71 and the second floating member 81 use any possible material that can float in the acid-base liquid (hydrogen peroxide, sodium hydroxide, hydrofluoric acid, hydrochloric acid, etc.) and is not easy to be corroded, and the embodiment does not limit this.

[0069] Optionally, the first liquid discharge pipeline 2 comprises a first detection pipeline 21 and a first liquid discharge pipeline 22, the first detection pipeline 21 is communicated with the bottom of the storage tank 1 and extends in the vertical direction, the first stopper 72 is arranged on the inner wall of the first detection pipeline 21, the first liquid discharge pipeline 22 is communicated with the first detection pipeline 21, the connection position of the first liquid discharge pipeline 22 and the first detection pipeline 21 is higher than the position where the first stopper 72 is arranged, and the first liquid pumping member 51 is arranged in the first liquid discharge pipeline 22.

[0070] The second liquid discharge pipeline 3 comprises a second detection pipeline 31 and a second liquid discharge pipeline 32, the second detection pipeline 31 is communicated with the bottom of the storage tank 1 and extends in the vertical direction, the bottom of the second detection pipeline 31 is communicated with the bottom of the first detection pipeline 21, the second stopper 82 is arranged on the inner wall of the second detection pipeline 31, the second liquid discharge pipeline 32 is communicated with the second detection pipeline 31, the connection position of the second liquid discharge pipeline 32 and the second detection pipeline 31 is higher than the position where the second stopper 82 is arranged, and the second liquid pumping member 61 is arranged in the second liquid discharge pipeline 32.

[0071] The vertically arranged detection pipeline can make the liquid level in the detection pipeline change obviously, so that the floating member rises or falls immediately with the rising or falling of the liquid level, and the second detection member 52 and the third detection member 62 can more accurately reflect the actual liquid level when detecting the liquid level.

[0072] The first detection pipeline 21 is communicated with the storage tank 1, and the bottom of the second detection pipeline 31 is communicated with the bottom of the first detection pipeline 21, and the similar U-shaped communication pipe 91 makes the whole liquid discharge mechanism 100 more compact in structure, which is beneficial to the overall layout. At the same time, there is a synergistic effect of rising or falling at the same time in detecting the liquid level, and the synergistic effect helps to improve the efficiency and stability of the whole liquid discharge mechanism 100, so that the discharge process of different types of liquid is more coordinated and orderly, and the overall performance of the photovoltaic cleaning device 200 containing the liquid discharge mechanism 100 is improved.

[0073] The liquid level detection and liquid pumping functions are separated in space, which ensures that the corresponding liquid pumping operation is responded in time after the liquid level is accurately detected, avoids the interference of the liquid pumping process on the liquid level detection, and improves the accuracy and stability of the whole first liquid discharge process. This structure helps to prevent improper discharge of acid-base liquid, reduces the corrosion risk of the device equipment, protects the safety of the operator, and improves the stability and safety of the overall operation of the photovoltaic cleaning device 200.

[0074] As an optional implementation, the first stopper 72 and the second stopper 82 are located at the same height in the vertical direction, i.e., at the same horizontal plane. It can be understood that the first float 71 and the second float 81 are also located at the same height in the natural state, so the second detection member 52 and the third detection member 62 are also located at the same height.

[0075] This design provides a unified liquid level reference standard for the first liquid discharge pipe 2 and the second liquid discharge pipe 3. In the liquid discharge mechanism 100, the first stopper 72 cooperates with the first float 71, and the second stopper 82 cooperates with the second float 81. The same height setting makes the liquid level control of the two liquids in the respective pipes unified, which helps to more accurately control the discharge timing of the two liquids, ensures that the corresponding operations are performed under the same liquid level conditions, and improves the accuracy of the entire liquid discharge process.

[0076] When operating and managing the liquid discharge mechanism 100, the operator does not need to set different liquid level judgment standards for different pipes, which simplifies the operation process, reduces the operation difficulty, and reduces the risk of misoperation caused by different liquid level judgment standards. For the photovoltaic cleaning device 200 containing the liquid discharge mechanism 100, this simplification helps to improve the overall operation efficiency of the equipment and reduce maintenance costs.

[0077] In some possible implementations, in combination Figure 2 The liquid discharge mechanism 100 further includes a first blocking net 211 and a second blocking net 311. The first blocking net 211 is arranged at the connection between the first detection pipe 21 and the first liquid discharge pipe 22, and the first blocking net 211 is configured to block the first valve 7 from entering the first liquid discharge pipe 22 when the first liquid pumping member 51 pumps liquid.

[0078] The second blocking net 311 is arranged at the connection between the second detection pipe 31 and the second liquid discharge pipe 32, and the second blocking net 311 is configured to block the second valve 8 from entering the second liquid discharge pipe 32 when the second liquid pumping member 61 pumps liquid.

[0079] When the first liquid pumping member 51 pumps liquid, the first blocking net 211 can prevent the first floating member 71 from entering the first liquid discharge pipeline 22. If the first floating member 71 enters the first liquid discharge pipeline 22, it can cause the first liquid discharge pipeline 22 to be blocked, affecting the normal pumping function of the first liquid pumping member 51. When processing acid-base process liquid such as the photovoltaic cleaning device 200, a stable pumping process is the key to ensuring the effective discharge of the process liquid, and the first blocking net 211 can ensure the smoothness of the liquid discharge pipeline, thereby ensuring the smooth progress of the entire liquid discharge process. The second blocking net 311 has a similar effect to the first blocking net 211, which can prevent the second liquid discharge pipeline 32 from being blocked and ensure that the second liquid pumping member 61 can normally pump the second liquid (acid-base waste liquid with lower concentration). In the photovoltaic cleaning device 200, the normal discharge of waste liquid is crucial to maintaining the balance and cleanliness of the liquid in the device, and the second blocking net 311 helps to ensure the smoothness of the waste liquid discharge.

[0080] Optionally, in combination with Figure 2 The first detection member 4 is arranged at the bottom of the storage tank 1.

[0081] Since the liquid discharged from the process tank 9 first accumulates at the bottom of the storage tank 1, arranging the first detection member 4 at the bottom can more timely and accurately detect the type of liquid that has just flowed into the storage tank 1. For example, in the photovoltaic cleaning device 200, whether it is acid-base process liquid with high concentration or acid-base waste liquid with low concentration, the concentration distribution at the bottom is relatively uniform when it first enters the storage tank 1, so that the first detection member 4 can more accurately determine the type of liquid. Compared with being arranged at other positions of the storage tank 1, such bottom arrangement can reduce detection errors caused by liquid stratification or local uneven mixing.

[0082] The first detection member 4 at the bottom can quickly detect the type of liquid flowing into the storage tank 1, so that the first control assembly 5 or the second control assembly 6 can quickly respond according to the detection result, and quickly starting the liquid discharge process helps to improve the working efficiency of the entire device, reduce the residence time of the liquid in the storage tank 1, and avoid adverse chemical reactions between different types of liquids.

[0083] In some embodiments, the first floating member 71 and the second floating member 81 are both spherical, the first stop member 72 includes a spherical surface matched with the outer surface of the first floating member 71, and the bottom of the first stop member 72 is provided with an opening 72a configured to pass the first liquid.

[0084] The spherical surface-to-spherical surface structure design makes the contact between the first floating member 71 and the first stop member 72 more intimate, providing a better sealing effect when the liquid level does not reach the first preset position or the second preset position, ensuring the stable state of the liquid in the pipeline, and helping to accurately control the liquid discharge process.

[0085] In addition, this also helps the positioning of the first floating member 71 on the first stop member 72. Due to the shape characteristics of the ball, its position on the stop member is relatively stable, which makes the corresponding relationship between the second detection member 52 and the position of the first floating member 71 on the stop member more reliable. When the liquid level in the first liquid discharge pipeline 2 changes, the first floating member 71 can move as expected and accurately, thereby ensuring the normal cooperation with the second detection member 52 and improving the accuracy of liquid level detection and valve control.

[0086] The first stop member 72 is provided with an opening 72a at the bottom for the first liquid to pass through. When the liquid level reaches the bottom of the stop member, the liquid can flow out smoothly through the opening 72a, driving the floating member to rise out of the detection range of the corresponding detection member, so that the liquid suction member responds in time to suck the liquid, better realizing the automatic liquid discharge process and ensuring the stable operation of the photovoltaic cleaning device 200.

[0087] In the second aspect, please refer to Figure 3 , Figure 3 The structure of the photovoltaic cleaning device 200 is disclosed in the embodiments of the present application. The present application also discloses a photovoltaic cleaning device 200, which comprises:

[0088] A process tank 9;

[0089] The liquid discharge mechanism 100 of any one of the first aspect is connected to the bottom of the process tank 9;

[0090] A communication pipe 91 is connected between the process tank 9 and the storage tank 1, and an electromagnetic valve 911 is arranged on the communication pipe 91. When the electromagnetic valve 911 is opened, the liquid in the process tank 9 can flow into the storage tank 1.

[0091] The liquid (such as high-concentration acid-base process liquid and low-concentration acid-base waste liquid) in the process tank 9 can be orderly flowed into the storage tank 1 under the control of the electromagnetic valve 911, and then various components (such as the first detection member 4, the first control assembly 5, the second control assembly 6, etc.) of the liquid discharge mechanism 100 are used to process different types of liquid. This makes the entire photovoltaic cleaning device 200 can comprehensively manage the liquid generated during the cleaning process, and improves the integrity and systematicness of liquid treatment. The electromagnetic valve 911 can realize precise control and automatic operation, thereby realizing the automatic liquid discharge of the entire photovoltaic cleaning device 200, without manual intervention throughout the process, which is not easy to produce safety risks, and improves the safety and stable operation of the photovoltaic cleaning device 200.

[0092] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A drainage mechanism, characterized in that, include: Storage tank, used to store liquid discharged from process tank; A first liquid discharge pipe is connected to the storage tank; A second liquid discharge pipe is connected to the storage tank; A first detection element is disposed in the storage tank, and the first detection element is capable of detecting the type of liquid in the storage tank; A first control component is disposed in the first liquid discharge pipe. The first control component is electrically connected to the first detection element. The first control component is configured to control the first liquid to be discharged from the first liquid discharge pipe when the first detection element detects that the liquid in the storage tank is of the first liquid type. A second control component is disposed in the second liquid discharge pipe. The second control component is electrically connected to the first detection element. The second control component is configured to control the second liquid to be discharged from the second liquid discharge pipe when the first detection element detects that the liquid type in the storage tank is the second liquid.

2. The drainage mechanism according to claim 1, characterized in that, The first control component includes a first liquid extraction component and a second detection component. The second detection component is disposed on the wall of the first liquid discharge pipe and is used to detect the liquid level in the first liquid discharge pipe. The first liquid extraction component is disposed in the first liquid discharge pipe and is electrically connected to the first detection component and the second detection component, so that the first detection component detects that the liquid type in the storage tank is the first liquid, and when the second detection component detects that the liquid level in the first liquid discharge pipe reaches a first preset position, the first liquid extraction component extracts the first liquid. The second control component includes a second pumping element and a third detection element. The third detection element is disposed on the wall of the second liquid discharge pipe and is used to detect the liquid level in the second liquid discharge pipe. The second pumping element is disposed inside the second liquid discharge pipe and is electrically connected to the first detection element and the third detection element, so that the first detection element detects that the liquid type in the storage tank is the second liquid, and when the third detection element detects that the liquid level in the second liquid discharge pipe reaches a second preset position, the second pumping element pumps out the second liquid.

3. The drainage mechanism according to claim 2, characterized in that, The drainage mechanism further includes a first valve, which is disposed inside the first liquid discharge pipe. When the liquid level in the first liquid discharge pipe reaches the first preset position, the first valve opens so that the first liquid can be discharged from the first liquid discharge pipe. The drainage mechanism further includes a second valve, which is disposed in the second liquid discharge pipe. When the liquid level in the second liquid discharge pipe reaches the second preset position, the second valve opens so that the second liquid can be discharged from the second liquid discharge pipe.

4. The drainage mechanism according to claim 3, characterized in that, The first valve includes a first floating element and a first stop element. The first stop element is disposed inside the first liquid discharge pipe, and the first floating element is disposed on the first stop element. The second detection element is disposed corresponding to the position of the first floating element on the first stop element. The first floating element is configured to have a density less than that of the liquid. When the liquid level in the first liquid discharge pipe reaches the first preset position, the first floating element moves away from the first stop element so that the first floating element moves out of the detection range of the second detection element. The second valve includes a second floating element and a second stop element. The second stop element is disposed inside the second liquid discharge pipe, and the second floating element is disposed on the second stop element. The third detection element is disposed corresponding to the position of the second floating element on the second stop element. The second floating element is configured to have a density less than that of the liquid. When the liquid level in the second liquid discharge pipe reaches the second preset position, the second floating element moves away from the second stop element, so that the second floating element moves out of the detection range of the third detection element.

5. The drainage mechanism according to claim 4, characterized in that, The first liquid discharge pipe includes a first detection pipe and a first drain pipe. The first detection pipe is connected to the bottom of the storage tank and extends vertically. The first stop is disposed on the inner wall of the first detection pipe. The first drain pipe is connected to the first detection pipe. The connection between the first drain pipe and the first detection pipe is higher than the first stop. The first liquid suction device is disposed inside the first drain pipe. The second liquid discharge pipe includes a second detection pipe and a second drain pipe. The second detection pipe is connected to the bottom of the storage tank and extends vertically. The bottom of the second detection pipe is connected to the bottom of the first detection pipe. The second stop is disposed on the inner wall of the second detection pipe. The second drain pipe is connected to the second detection pipe. The connection between the second drain pipe and the second detection pipe is higher than the second stop. The second liquid suction device is disposed inside the second drain pipe.

6. The drainage mechanism according to claim 4, characterized in that, In the vertical direction, the first stop and the second stop are at the same height.

7. The drainage mechanism according to claim 5, characterized in that, The draining mechanism further includes a first blocking net and a second blocking net. The first blocking net is disposed at the connection between the first detection pipe and the first draining pipe. The first blocking net is configured to prevent the first valve from entering the first draining pipe when the first pumping element pumps liquid. The second barrier is disposed at the connection between the second detection pipe and the second drain pipe. The second barrier is configured to prevent the second valve from entering the second drain pipe when the second pumping element is pumping liquid.

8. The drainage mechanism according to claim 1, characterized in that, The first detection element is disposed at the bottom of the storage tank.

9. The drainage mechanism according to claim 4, characterized in that, Both the first floating member and the second floating member are spheres. The first stop member includes a spherical surface that matches the outer surface of the first floating member, and the bottom of the first stop member is provided with an opening configured to allow the first liquid to pass through.

10. A photovoltaic cleaning device, characterized in that, include: Process tank; The draining mechanism as described in any one of claims 1-9 is connected to the bottom of the process tank; A connecting pipe is provided between the process tank and the storage tank. The connecting pipe is equipped with a solenoid valve. When the solenoid valve is opened, the liquid in the process tank can flow into the storage tank.

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