CN203079700U - Automatic liquid adding device - Google Patents

Abstract

The utility model discloses an automatic liquid adding device. The automatic liquid adding device comprises a power pump, a liquid inlet pipe, a liquid outlet pipe and a liquid storage barrel, wherein the two ends of the liquid inlet pipe are respectively connected with an inlet of the power pump and a raw material barrel, the liquid outlet pipe is connected with an outlet of the power pump and the liquid storage barrel, a first protective cover is arranged outside the power pump, and a second protective cover is arranged outside the liquid storage barrel; the first protective cover and the second protective cover are used for respectively isolating the power pump and the liquid storage barrel from being in contact with outer space, so that the probability that chemicals are in contact with air is reduced, and other impurities are prevented from entering the chemicals, thus the quality of the chemicals is ensured; and the chemicals are also prevented from losing in the preparation process, thus the accuracy of concentration ratio of the chemicals is ensured, and the quality of a cleaning solution is improved. As a liquid for cleaning silicon materials is strong acid-containing liquid and has strong corrosivity, the totally-enclosed preparation environment can ensure the safety of operating personnel, reduces working risks and improves the working environments of the operating personnel.

Description

Automatic liquid filling device

technical field

The utility model relates to the technical field of polysilicon production, in particular to an automatic liquid adding device.

Background technique

In the production process of solar-grade polysilicon, due to oxidation and other treatments on the silicon surface, there is a layer of amorphous substances called impurities. In addition, the silicon material sticks to dirt during transportation and storage, and even some pollutants will penetrate into the surface of the silicon material. Therefore, Before using these silicon materials, the surface must be cleaned to remove impurities and pollutants on the surface. Improper cleaning of the silicon materials will directly affect the photoelectric conversion efficiency of solar cells, so it is absolutely necessary to clean the silicon materials.

The process of silicon material cleaning is a process of chemical reaction, so it is necessary to accurately control the concentration of chemicals to ensure the quality of silicon material after cleaning. The concentration of chemicals before purchasing cannot meet the process requirements for cleaning silicon materials, so it is necessary to artificially prepare chemicals before cleaning silicon materials. The process of compounding chemicals is another high-risk job.

According to the current state of the art, the process of formulating chemicals is:

A. Purchased vats of packaged chemicals;

B. Divided into several small barrels of chemicals;

C. Weigh out the required chemicals;

D. Manually pour into the cleaning equipment.

During the preparation process of this chemical, the chemical was exposed to the air many times, which had a certain impact on the quality, concentration and other indicators of the chemical. In this preparation process, it is completely manual operation, which is not only inconvenient in operation but also causes a large degree of potential safety hazard.

According to the current technical level, the chemicals are completely exposed to the air during the process of preparing chemicals, and the chemical properties of the chemicals themselves are not stable, and there will be volatilization and reactions, which will cause changes or changes in the concentration ratio , which affects the quality of silicon material cleaning; in the process of preparing chemicals, because it is manually poured into the chemical tank, the control of the amount of chemicals added is very imprecise; Closed, to a large extent caused a security risk.

Therefore, how to clean silicon material safely, efficiently and with high quality is a technical problem that those skilled in the art need to solve.

Utility model content

The purpose of this utility model is to provide an automatic liquid adding device, which can effectively improve the safety and reliability in the preparation process of silicon material cleaning liquid, improve the preparation speed and quality of cleaning liquid, and protect the safety of operators.

In order to achieve the purpose of the above utility model, the utility model provides an automatic liquid filling device, including a power pump, a liquid inlet pipe, a liquid outlet pipe and a liquid storage tank, and the two ends of the liquid inlet pipe are respectively connected to the inlet of the power pump and the raw material barrel, the liquid outlet pipe is connected to the outlet of the power pump and the liquid storage barrel, the exterior of the power pump is provided with a first protective cover, and the exterior of the liquid storage barrel is provided with a second protective cover.

Preferably, the liquid storage tank is a transparent container, and the second protective cover is a transparent cover or has at least one observation hole.

Preferably, the liquid storage barrel has corresponding scales.

Preferably, a workbench supporting the power pump and the liquid storage tank is also included, and rolling wheels are provided at the bottom of the workbench.

Preferably, the outer edge of the part of the workbench located at the lower part of the liquid storage tank is provided with an overflow groove.

Preferably, a locker is provided between the workbench and the rolling wheels.

Preferably, the power pump is specifically a diaphragm pump.

Preferably, two brackets are fixedly installed on the workbench, and the liquid inlet pipe and the liquid outlet pipe are respectively wound on the two brackets.

The automatic liquid adding device provided by the utility model includes a power pump, a liquid inlet pipe, a liquid outlet pipe and a liquid storage barrel, and the two ends of the liquid inlet pipe are respectively connected to the inlet of the power pump and the raw material barrel, and the outlet The liquid pipe is connected to the outlet of the power pump and the liquid storage barrel, the exterior of the power pump is provided with a first protective cover, and the exterior of the liquid storage barrel is provided with a second protective cover. When it is necessary to prepare the cleaning solution, insert the liquid outlet pipe into the liquid storage barrel, insert the liquid inlet pipe into the raw material barrel, and connect the air pipe to the compressed air to make it reach the capacity to be added, then turn off the compressed air, and clean water is required after use Clean the device. The first protective cover and the second protective cover respectively isolate the contact between the power pump and the liquid storage tank and the external space, adopting a fully enclosed protective device, which effectively prevents the chance of chemicals coming into contact with the air, and prevents the chemicals from being exposed to air. The entry of other impurities ensures the quality of the chemicals; it also prevents the loss of chemicals during the preparation process, thereby ensuring the accuracy of the chemical concentration ratio and improving the quality of the cleaning solution. Moreover, the liquid for cleaning the silicon material is a strong acidic liquid, which is highly corrosive. The fully enclosed preparation environment can protect the safety of operators, reduce work risks, and improve the working environment of operators.

In a preferred embodiment, the liquid storage tank is a transparent container, and the second protective cover is a transparent cover or has at least one observation hole. Through the second protective cover and the shell of the liquid storage tank, the volume of the cleaning liquid in the liquid storage tank can be observed, so as to accurately control the quality of the cleaning liquid and improve the controllability when preparing the cleaning liquid.

In another preferred embodiment, the automatic liquid adding device provided by the utility model further includes a workbench supporting the power pump and the liquid storage tank, and rolling wheels are arranged at the bottom of the workbench. The workbench with rolling wheels is similar to a tool trolley. The automatic liquid filling device is placed on this trolley, which can facilitate the transfer of cleaning fluid, power pump and other equipment, improve cleaning efficiency and reduce the labor intensity of staff.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiment of automatic liquid adding device provided by the utility model;

Fig. 2 is a side view of the automatic liquid filling device shown in Fig. 1 .

Detailed ways

The core of the utility model is to provide an automatic liquid adding device, which can effectively improve the safety and reliability in the preparation process of silicon material cleaning liquid, improve the preparation speed and quality of cleaning liquid, and protect the safety of operators.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 and Fig. 2. Fig. 1 is a schematic structural diagram of a specific embodiment of the automatic liquid filling device provided by the present invention; Fig. 2 is a side view of the automatic liquid adding device shown in Fig. 1 .

The automatic liquid adding device provided by the utility model includes a power pump 3, a liquid inlet pipe, a liquid outlet pipe and a liquid storage tank. The outlet of the pump 3 and the liquid storage barrel, the power pump 3 is provided with a first protective cover 1 outside, and the liquid storage barrel is provided with a second protective cover 2 outside. When it is necessary to prepare the cleaning solution, insert the liquid outlet pipe into the liquid storage barrel, insert the liquid inlet pipe into the raw material barrel, and connect the air pipe to the compressed air to make it reach the capacity to be added, then turn off the compressed air, and clean water is required after use Clean the device.

The first protective cover 1 and the second protective cover 2 respectively isolate the contact between the power pump 3 and the liquid storage tank and the external space, and adopt a fully enclosed protective device to effectively prevent the chance of chemicals coming into contact with the air. The inclusion of other impurities in the chemicals ensures the quality of the chemicals; it also prevents the loss of chemicals during the preparation process, thereby ensuring the accuracy of the chemical concentration ratio and improving the quality of the cleaning solution.

Moreover, the liquid for cleaning the silicon material is a strong acidic liquid, which is highly corrosive. The fully enclosed preparation environment can protect the safety of operators, reduce work risks, and improve the working environment of operators.

Specifically, the above-mentioned first protective cover 1 and second protective cover 2 can be made of acid and alkali resistant materials, and can be freely disassembled for easy use. At the same time, both the first protective cover 1 and the second protective cover 2 can also be made of transparent materials, so that the amount of chemicals used and the operation of the equipment itself can be clearly seen, which is convenient for the operator to control.

In a specific embodiment, the liquid storage barrel is a transparent container, and the second protective cover 2 is a transparent cover or has at least one observation hole. Through the second protective cover 2 and the side wall of the liquid storage tank, the volume of the cleaning liquid in the liquid storage tank can be observed, so as to accurately control the quality of the cleaning liquid and improve the controllability when preparing the cleaning liquid.

Further, the above-mentioned liquid storage tank may have corresponding accurate scales, so as to grasp the accuracy of preparing chemicals. That is to say, the liquid storage tank can be a graduated, transparent, acid and alkali-resistant container, which can clearly see the amount of chemicals used, so as to ensure the accuracy of the concentration ratio of the liquid medicine.

In a preferred embodiment, the automatic liquid filling device provided by the utility model also includes a workbench 4 supporting the power pump 3 and the liquid storage tank, and the bottom of the workbench 4 is provided with a rolling wheel 5 . The workbench 4 with the rolling wheels 5 is similar to a tool trolley. The automatic liquid filling device is placed on this trolley, which can facilitate the transfer of equipment such as cleaning fluid and power pump 3, improve cleaning efficiency, and reduce the labor intensity of staff.

Specifically, acid and alkali-resistant plastics can be laid on the plane of the workbench 4, the rear wheel of the trolley can be equipped with a brake function, the trolley can be provided with handles 6, and anti-slip sleeves are added to the handles 6, and the car body is made of stainless steel to improve the stability of the trolley. Maneuverability prolongs the service life of the trolley.

In a further technical solution, the workbench 4 is located at the lower part of the liquid storage tank, and an overflow tank 7 can be provided on its outer edge. The overflow tank 7 can effectively prevent the liquid from overflowing and other accidents caused by equipment problems during operation. flow out, reduce the possibility of leakage, and avoid personal and property injuries.

Simultaneously, locker 8 can be set between workbench 4 and rolling wheel, is about to dolly is divided into upper and lower two layers, and wherein the surface of upper layer is acid and alkali resistant material, and lower layer is provided with locker 8, is used for placing chemical protective clothing, Labor protection items such as chemical-resistant boots and chemical-resistant gloves are convenient for operators to use.

Two brackets 9 are fixedly installed on the workbench 4, and the liquid inlet pipe and the liquid outlet pipe are wound on the two brackets 9 respectively. The bracket 9 can be made of acid and alkali resistant material. After use, the liquid inlet pipe and the liquid outlet pipe are all wound on the bracket 9, which can effectively avoid confusion in use and improve the cleanliness of the production workshop.

The above-mentioned power pump 3 may specifically be a diaphragm pump, which is also called a control pump, and is the main type of actuator. By receiving the control signal output by the modulation unit, the fluid flow is changed by means of power operation. Diaphragm pumps generally consist of actuators and valves. Using compressed air as the power source, it can pump all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. Therefore, using the diaphragm pump as the power pump 3 can avoid the use of electricity, and will not cause accidents where electricity reacts with acid, eliminating potential safety hazards.

The automatic liquid adding device provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (8)

1. An automatic liquid adding device, characterized in that, comprises a power pump, a liquid inlet pipe, a liquid outlet pipe and a liquid storage tank, and the two ends of the liquid inlet pipe are respectively connected to the inlet and the raw material barrel of the power pump, so The liquid outlet pipe is connected to the outlet of the power pump and the liquid storage tank, the power pump is provided with a first protective cover, and the liquid storage tank is provided with a second protective cover. 2. The automatic liquid filling device according to claim 1, wherein the liquid storage tank is a transparent container, and the second protective cover is a transparent cover or has at least one observation hole. 3. The automatic liquid filling device according to claim 2, characterized in that, the liquid storage tank has corresponding scales. 4. The automatic liquid filling device according to any one of claims 1 to 3, further comprising a workbench supporting the power pump and the liquid storage tank, and rolling wheels are provided at the bottom of the workbench. 5. The automatic liquid adding device according to claim 4, characterized in that, the part of the workbench located at the lower part of the liquid storage barrel is provided with an overflow groove on its outer edge. 6 . The automatic liquid filling device according to claim 4 , wherein a locker is provided between the workbench and the rolling wheels. 7 . 7. The automatic liquid filling device according to claim 4, characterized in that, the power pump is specifically a diaphragm pump. 8 . The automatic liquid adding device according to claim 4 , wherein two brackets are fixedly installed on the workbench, and the liquid inlet pipe and the liquid outlet pipe are respectively wound on the two brackets.

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