Curing tank infiltration wastewater recycling treatment system

Abstract

The utility model relates to the technical field of wastewater recycling treatment, and discloses a curing tank infiltration wastewater recycling treatment system which comprises a high-temperature water tank, a curing tank, a plate heat exchanger, a to-be-treated wastewater tank, reduced pressure distillation equipment, a concentrated waste liquid tank and a regenerated water tank, the bottom end of the high-temperature water tank is communicated with the upper end of the curing tank through a high-temperature water tank water conveying pipeline, a high-temperature water tank circulating water pump is installed on the high-temperature water tank water conveying pipeline and used for extracting water in the high-temperature water tank, and the bottom end of the curing tank is communicated with a first water inlet of the plate heat exchanger through a curing tank water conveying pipeline. The liquid outlet end of the to-be-treated wastewater tank is communicated with the liquid inlet end of the reduced pressure distillation equipment through a pipeline. The device can recover heat energy of waste water in the curing tank, saves energy and cost, purifies the waste water, recycles the waste water, and saves water sources.

Description

Technical Field

[0001] This utility model relates to the field of wastewater recycling and treatment technology, and in particular to a solidification tank impregnation wastewater recycling and treatment system. Background Technology

[0002] In the manufacturing process of die-casting and powder metallurgy parts, numerous micropores, sand holes, and cracks inevitably form due to residual gas and crystal shrinkage. Micropore leakage poses a hidden danger to the use of machinery and equipment. Impregnation is a micropore penetration sealing process. Its principle involves placing the leaking casting into a vacuum chamber, evacuating the gas from the micropores, using hydraulic pressure to force the impregnating liquid into the micropores, and heating it to solidify, thus sealing the micropores. During the impregnation and solidification process, the impregnating liquid needs to be maintained within a certain temperature range, and the solidified impregnating liquid needs to be replaced promptly. Therefore, continuous heating of the new impregnating liquid is required, resulting in significant energy consumption.

[0003] There are also some existing studies on utilizing the residual heat of curing, such as the Chinese utility model patent with application number CN201520912954.X entitled "Heat Energy Recycling Device for Curing Chamber". It can collect and recycle the heat energy discharged during the curing process, thereby reducing production costs. However, it mainly utilizes the gas heat energy in the curing chamber of the battery, which is quite different from the utilization of the heat energy of the cured liquid. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a wastewater recycling and treatment system for impregnation in a curing tank, which can recover the heat energy of the wastewater in the curing tank, save energy and costs, and at the same time purify the wastewater for recycling, thus saving water resources.

[0005] This utility model is achieved using the following technical solution: a solidification tank impregnation wastewater recycling and treatment system, comprising a high-temperature water tank, a solidification tank, a plate heat exchanger, a wastewater tank to be treated, a vacuum distillation device, a concentrated waste liquid tank, and a regenerated water tank. The bottom of the high-temperature water tank is connected to the top of the solidification tank via a high-temperature water tank water supply pipe. A high-temperature water tank circulating water pump is installed on the high-temperature water tank water supply pipe to pump the liquid in the high-temperature water tank. The bottom of the solidification tank is connected to the first inlet of the plate heat exchanger via a solidification tank water supply pipe, and then connected to the wastewater tank to be treated via the first channel of the plate heat exchanger. The outlet of the wastewater tank to be treated is connected to the inlet of the vacuum distillation device via a pipe. One outlet of the vacuum distillation device is connected to the concentrated waste liquid tank via a pipe, and the other outlet of the vacuum distillation device is connected to the inlet of the regenerated water tank via a pipe. The outlet of the regenerated water tank is connected to the second inlet of the plate heat exchanger via a regenerated water tank pipe, and then connected to the inlet of the high-temperature water tank via the second channel of the plate heat exchanger.

[0006] Wastewater in the solidification tank is discharged into the wastewater tank to be treated after being cooled through the first channel of the plate heat exchanger via the solidification tank water supply pipe. After being treated by the vacuum distillation equipment, the distilled purified water obtained after distillation enters the regenerated water tank as a reserve for reuse water, and flows to the high-temperature water tank through the second channel of the plate heat exchanger. The high-temperature wastewater transported by the solidification tank and the regenerated low-temperature purified water in the regenerated water tank exchange heat in the plate heat exchanger. The concentrated waste liquid after distillation enters the concentrated waste liquid tank for collection.

[0007] Furthermore, the high-temperature wastewater output from the solidification tank and the low-temperature purified regenerated water output from the regenerated water tank via the plate heat exchanger have the same volume and flow rate.

[0008] Furthermore, a high-temperature water tank regulating valve is installed on the high-temperature water tank water delivery pipeline in front of the high-temperature water tank circulating water pump;

[0009] Furthermore, a curing tank regulating valve and a curing tank booster pump are installed sequentially at intervals on the water supply pipeline of the curing tank.

[0010] Furthermore, a wastewater tank regulating valve is installed at the outlet end of the wastewater tank to be treated.

[0011] Furthermore, a reclaimed water tank regulating valve and a reclaimed water tank circulating water pump are installed sequentially and at intervals on the reclaimed water tank pipeline.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solidification tank impregnation wastewater recycling and treatment system of this utility model, the wastewater in the solidification tank is cooled through the first channel of the plate heat exchanger and discharged into the wastewater tank to be treated. After being treated by the vacuum distillation equipment, the distilled water obtained after distillation enters the regeneration water tank and flows to the high-temperature water tank through the second channel of the plate heat exchanger. The high-temperature wastewater transported by the solidification tank and the regenerated low-temperature clean water in the regeneration water tank have the same internal volume and flow rate in the plate heat exchanger. The two exchange heat, thereby realizing the heat energy recovery of the solidification tank wastewater, saving energy and costs. At the same time, the wastewater is purified and recycled, saving water resources. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the pipeline connection of the solidification tank impregnation wastewater recycling and treatment system of this utility model.

[0014] In the diagram: High-temperature water tank-1; Solidification tank-2; Plate heat exchanger-3; Wastewater tank to be treated-4; Vacuum distillation equipment-5; Concentrated waste liquid tank-6; Reclaimed water tank-7; High-temperature water tank regulating valve-11; High-temperature water tank circulating water pump-12; Solidification tank regulating valve-13; Solidification tank booster pump-14; Wastewater tank regulating valve-15; Reclaimed water tank circulating water pump-16; Reclaimed water tank regulating valve-17. Detailed Implementation

[0015] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0016] The purpose of this invention is to address the shortcomings of existing technologies by providing a system for recycling and treating impregnating wastewater from a curing tank.

[0017] Example 1

[0018] This embodiment provides a system for recycling and treating impregnating wastewater from a curing tank, referring to... Figure 1 As shown, the system includes a high-temperature water tank 1, a solidification tank 2, a plate heat exchanger 3, a wastewater tank 4, a vacuum distillation unit 5, a concentrated waste liquid tank 6, and a regenerated water tank 7. The bottom of the high-temperature water tank 1 is connected to the top of the solidification tank 2 via a high-temperature water tank supply pipe. A high-temperature water tank circulating water pump 12 is installed on this high-temperature water tank supply pipe to pump the liquid in the high-temperature water tank 1. A high-temperature water tank regulating valve 11 is also installed on this high-temperature water tank supply pipe in front of the high-temperature water tank circulating water pump 12 to control the opening and closing of the high-temperature water tank supply pipe at the bottom of the high-temperature water tank 1. The bottom of the solidification tank 2 is connected to the first inlet of the plate heat exchanger 3 via a solidification tank supply pipe. A solidification tank regulating valve 13 and a solidification tank booster pump 14 are installed sequentially at intervals on the solidification tank supply pipe. The solidification tank regulating valve 13 is used to control the opening and closing of the solidification tank supply pipe, and the solidification tank booster pump 14 is used to pump the wastewater in the solidification tank 2 into the plate heat exchanger 3. In this embodiment, the plate heat exchanger 3 uses a detachable plate heat exchanger in the prior art, which is provided with 4 interfaces and is divided into two channels inside. The first channel is located between the hot medium inlet and the hot medium outlet, and the second channel is located between the cold medium inlet and the cold medium outlet.

[0019] The wastewater is connected to the wastewater tank 4 via the first channel of the plate heat exchanger 3. The outlet of the wastewater tank 4 is connected to the inlet of the vacuum distillation equipment 5 via a pipe. A regulating valve 15 is installed at the outlet of the wastewater tank 4 to control the discharge of the wastewater. One outlet of the vacuum distillation equipment 5 is connected to the concentrated waste liquid tank 6 via a pipe, and the other outlet of the vacuum distillation equipment 5 is connected to the inlet of the regenerated water tank 7 via a pipe. The outlet of the regenerated water tank 7 is connected to the second inlet of the plate heat exchanger 3 via a regenerated water tank pipe. In this embodiment, the vacuum distillation equipment 5 can be the company's industrial wastewater vacuum distillation purification equipment or the existing low-temperature wastewater distillation equipment, used to treat the wastewater raw liquid to generate regenerated purified water and concentrated waste liquid. A regenerated water tank regulating valve 17 and a regenerated water tank circulating water pump 16 are installed sequentially and at intervals on the regenerated water tank pipeline. The regenerated water tank regulating valve 17 is used to control the opening and closing of the regenerated water tank pipeline, and the regenerated water tank circulating water pump 16 is used to draw the clean water in the regenerated water tank 7 into the plate heat exchanger 3, and then connect it to the inlet of the high temperature water tank 1 through the second channel of the plate heat exchanger 3.

[0020] This utility model discloses a wastewater recycling and treatment system for impregnation in a curing tank. During operation, the wastewater in the curing tank 2 is discharged into the wastewater tank 4 to be treated after being cooled through the first channel of the plate heat exchanger 3 via the water supply pipe of the curing tank 2. After being treated by the vacuum distillation equipment 5, the distilled purified water enters the regenerated water tank 7 as a reserve for reuse and flows to the high-temperature water tank 1 through the second channel of the plate heat exchanger 3. The high-temperature wastewater transported by the curing tank 2 and the regenerated low-temperature purified water in the regenerated water tank 7 have the same volume and flow rate in the plate heat exchanger 3, and the two exchange heat. The concentrated waste liquid after distillation enters the concentrated waste liquid tank 6 for collection, thereby realizing the heat energy recovery of the curing tank wastewater, saving energy and costs, and purifying the wastewater for recycling, thus saving water resources.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for recycling and treating impregnating wastewater from a curing tank, characterized in that: The system includes a high-temperature water tank (1), a curing tank (2), a plate heat exchanger (3), a wastewater tank (4), a vacuum distillation unit (5), a concentrated waste liquid tank (6), and a regenerated water tank (7). The bottom of the high-temperature water tank (1) is connected to the top of the curing tank (2) via a high-temperature water tank water supply pipe. A high-temperature water tank circulating water pump (12) is installed on the high-temperature water tank water supply pipe to pump the water in the high-temperature water tank (1). The bottom end of the curing tank (2) is connected to the first inlet of the plate heat exchanger (3) through a water supply pipe, and then connected to the wastewater tank (4) through the first channel of the plate heat exchanger (3). The outlet of the wastewater tank (4) is connected to the inlet of the vacuum distillation equipment (5) through a pipe. One outlet of the vacuum distillation equipment (5) is connected to the concentrated waste liquid tank (6) through a pipe, and the other outlet of the vacuum distillation equipment (5) is connected to the inlet of the regenerated water tank (7) through a pipe. The outlet of the regenerated water tank (7) is connected to the second inlet of the plate heat exchanger (3) through a regenerated water tank pipe, and then connected to the inlet of the high-temperature water tank (1) through the second channel of the plate heat exchanger (3). Wastewater in the solidification tank (2) is cooled through the first channel of the plate heat exchanger (3) and discharged into the wastewater tank (4) to be treated. After being treated by the vacuum distillation equipment (5), the distilled water obtained after distillation enters the regenerated water tank (7) as a reserve for reuse water and flows to the high temperature water tank (1) through the second channel of the plate heat exchanger (3). The high temperature wastewater transported by the solidification tank (2) and the regenerated low temperature clean water in the regenerated water tank (7) exchange heat in the plate heat exchanger (3). The concentrated waste liquid after distillation enters the concentrated waste liquid tank (6) for collection.

2. The wastewater recycling and treatment system for the curing tank impregnation as described in claim 1, characterized in that: The high-temperature wastewater output from the solidification tank (2) and the regenerated low-temperature purified water output from the regenerated water tank (7) via the plate heat exchanger (3) have the same volume and flow rate.

3. The wastewater recycling and treatment system for the curing tank impregnation as described in claim 1 or 2, characterized in that: A high-temperature water tank regulating valve (11) is installed on the high-temperature water tank water supply pipeline in front of the high-temperature water tank circulating water pump (12).

4. The solidification tank impregnation wastewater recycling and treatment system according to claim 1 or 2, characterized in that: A curing tank regulating valve (13) and a curing tank booster pump (14) are installed sequentially at intervals on the water supply pipeline of the curing tank.

5. The solidification tank impregnation wastewater recycling and treatment system according to claim 1 or 2, characterized in that: The wastewater tank (4) to be treated is equipped with a wastewater tank regulating valve (15) at the outlet end.

6. The wastewater recycling and treatment system for the curing tank impregnation as described in claim 1 or 2, characterized in that: A reclaimed water tank regulating valve (17) and a reclaimed water tank circulating water pump (16) are installed sequentially at intervals on the reclaimed water tank pipeline.

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