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CN-224226704-U - Full-automatic unattended processing and recycling system for silicon wafer cutting fluid in photovoltaic industry

CN224226704UCN 224226704 UCN224226704 UCN 224226704UCN-224226704-U

Abstract

The utility model relates to the technical field of wastewater recycling treatment, in particular to a full-automatic unattended treatment recycling system for silicon wafer cutting fluid in the photovoltaic industry, which comprises a waste liquid collecting tank, a waste liquid feeding tank, tubular membrane equipment, a concentrated liquid tank, a clear liquid collecting tank and a blending tank. The utility model improves the existing production system and process flow, adds a tubular membrane concentration system and a centrifugal separation system in the original solid-liquid separation link in the production system, is used for replacing a filter press to carry out solid-liquid separation, can realize automatic continuous production of the system, can realize unattended full-automatic operation, can greatly improve field operation and production environment, improves device efficiency, and saves labor cost and operation cost. In addition, a concentrated liquid supply circulating water tank and related pipeline equipment are designed, and an operation mode is added for the selection and switching of a producer, so that concentrated liquid supply circulating liquid supply can be used, and the purposes of more energy saving and stability, higher redundancy and better liquid supply consistency of the system are achieved.

Inventors

  • JIA JIANGUO
  • WANG LUFENG
  • TAN PENG
  • ZHANG ZUHONG

Assignees

  • 宜兴市欧清环保科技有限公司

Dates

Publication Date
20260512
Application Date
20250707

Claims (6)

  1. 1. A full-automatic unattended processing and recycling system of silicon wafer cutting fluid in the photovoltaic industry is characterized by comprising a waste fluid collecting tank (2) for receiving cutting waste fluid, a waste fluid feeding tank (7) communicated with the waste fluid collecting tank (2) and used for caching waste fluid, a tubular membrane device (8) communicated with the waste fluid feeding tank (7) and used for concentrating and caching waste fluid, a concentrated liquid tank (13) communicated with a concentrated liquid outlet of the tubular membrane device (8), a centrifugal machine (14) or a filter press (15) communicated with the concentrated liquid tank (13) and used for separating silicon mud (16), a clear fluid collecting tank (9) communicated with a clear fluid outlet of the tubular membrane device (8) and a blending tank (10) communicated with the clear fluid collecting tank (9) and used for blending cutting fluid; The device comprises a blending tank (10), a wire cutting workshop cutting machine table (1), a first fine filter (11) and a second fine filter, wherein the blending liquid in the blending tank is conveyed to the wire cutting workshop cutting machine table (1) through a pipeline and a conveying pump for recycling; the clear liquid obtained by treatment in the centrifuge (14) or the filter press (15) is collected and then is conveyed into the waste liquid feeding tank (7) through a conveying pump; Part of the waste liquid in the waste liquid collecting tank (2) is conveyed by a water pump and filtered by a parallel or serial filter (3) to enter a concentrated liquid supply circulating water tank (4); the cutting fluid prepared in the preparation tank (10) is returned to the concentrated fluid supply circulating water tank (4) through a fluid preparation pipeline, and a second fine filter (12) is arranged on the fluid preparation pipeline; the solution in the concentrated solution supply circulating water tank (4) is stirred and then conveyed by the solution supply water pump (5), and is subjected to fine filtration by the third fine filter (6) and then conveyed to the cutting machine table for cutting and recycling.
  2. 2. The fully automatic unattended processing and recycling system of the silicon wafer cutting fluid in the photovoltaic industry according to claim 1 is characterized in that waste fluid in the waste fluid collecting tank (2) is conveyed into the waste fluid feeding tank (7) through a centrifugal pump, and a filter is arranged between the waste fluid collecting tank (2) and the waste fluid feeding tank (7).
  3. 3. The full-automatic unattended processing and recycling system for the silicon wafer cutting fluid in the photovoltaic industry, which is disclosed in claim 1, is characterized in that the buffer waste fluid in the waste fluid feeding tank (7) is conveyed into the tubular membrane equipment (8) through a centrifugal pump.
  4. 4. The full-automatic unattended processing and recycling system for the silicon wafer cutting fluid in the photovoltaic industry, which is disclosed in claim 1, is characterized in that a clear fluid outlet end of the tubular membrane device (8) is conveyed into the clear fluid collecting tank (9) through a conveying pipe, and an on-line automatic sampling and automatic analysis detection device is arranged on an inlet end pipeline of the clear fluid collecting tank (9).
  5. 5. The full-automatic unattended processing and recycling system for silicon wafer cutting fluid in photovoltaic industry according to claim 1 is characterized in that a stirring device is arranged in the blending tank (10), and an automatic batching device for supplementing new cutting fluid and RO water is further arranged on the blending tank (10).
  6. 6. The full-automatic unattended processing and recycling system of the silicon wafer cutting fluid in the photovoltaic industry, which is disclosed in claim 1, is characterized in that a temperature sensor, a PH meter, a turbidity sensor, a liquid level sensor and an online concentration meter are arranged in the waste liquid collecting tank (2), the waste liquid feeding tank (7), the clear liquid collecting tank (9), the blending tank (10) and the concentrated liquid tank (13), and are used for sampling and detection, a pressure sensor and a flow sensor are arranged on each conveying pipe, and each sensor detects related data through logic control of a PLC system.

Description

Full-automatic unattended processing and recycling system for silicon wafer cutting fluid in photovoltaic industry Technical Field The utility model relates to the technical field of wastewater recycling treatment, in particular to a full-automatic unattended processing recycling system for silicon wafer cutting fluid in the photovoltaic industry. Background Conventionally, in the solar photovoltaic or semiconductor silicon wafer manufacturing industry, a diamond wire cutting process is generally used for the production and processing of silicon wafers, a large amount of cutting fluid is used in the process, a large amount of waste liquid is generated, silicon powder chips and other impurities are contained in the waste liquid, the waste liquid is collected in the past and current industry, then is pumped to a filter press for solid-liquid separation, and the separated clear liquid is manually detected, blended and added with part of active ingredients and reused (generally introduced, the specific process flow is shown in figure 2). The system has low automation degree at present, a plurality of process links are completely operated manually, and the system is not beneficial to standard unification and process control while has high labor cost. Particularly, in the system, the filter pressing equipment in the solid-liquid separation link of the core process has the outstanding problems that the filter pressing equipment cannot continuously produce and periodically discharge mud, the material is required to be manually discharged for several times a day, the material is easy to scatter in the discharging process, the field environment is difficult to messy to manage, the continuous automatic production cannot be realized, the manual operation amount is large, the standardized process control cannot be realized, and the like. Under the background of upgrading devices, automatizing equipment and intelligent intelligence in the current industry, the device becomes a bottleneck and pain point for upgrading devices of a silicon wafer linear cutting fluid recovery processing system. Disclosure of utility model The utility model aims to provide a full-automatic unattended processing and recycling system for silicon wafer cutting fluid in the photovoltaic industry, which solves the problems of automation, less humanization and standardization in the actual production process. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a full-automatic unattended processing and recycling system of silicon wafer cutting fluid in the photovoltaic industry, which comprises a waste fluid collecting tank for receiving cutting waste fluid, a waste fluid feeding tank communicated with the waste fluid collecting tank and used for caching waste fluid, tubular membrane equipment communicated with the waste fluid feeding tank and used for concentrating and caching waste fluid, a concentrated liquid tank communicated with a concentrated liquid outlet of the tubular membrane equipment, a centrifugal machine or a filter press communicated with the concentrated liquid tank and used for separating silicon mud, a clear fluid collecting tank communicated with a clear fluid outlet of the tubular membrane equipment, and a blending tank communicated with the clear fluid collecting tank and used for blending cutting fluid; The blending liquid in the blending tank is conveyed to a cutting machine table of a wire cutting workshop through a pipeline and a conveying pump so as to be recycled; a first fine filter is arranged on the pipeline; collecting clear liquid obtained by treatment in the centrifugal machine or the filter press, and conveying the clear liquid into the waste liquid feeding tank through a conveying pump; Part of waste liquid in the waste water collecting tank is conveyed by a water pump, filtered by a parallel or serial filter and enters a concentrated liquid supply circulating water tank; The cutting fluid prepared in the preparation tank is returned to the concentrated liquid supply circulating water tank through a liquid preparation pipeline, and a second fine filter is arranged on the liquid preparation pipeline; And after the solution in the concentrated solution supply circulating water tank is stirred, the solution is conveyed by a solution supply water pump, is subjected to fine filtration by a third fine filter and is sent to a cutting machine table for cutting and recycling. In this embodiment, further, the waste liquid in the waste liquid collecting tank is conveyed into the waste liquid feeding tank by a centrifugal pump, and a filter is disposed between the waste liquid collecting tank and the waste liquid feeding tank. In still further embodiments, the buffered waste liquid in the waste liquid feed tank is delivered to the tubular membrane apparatus by a centrifugal pump. In this embodiment, the clear liquid outlet end of the tubular membrane a