A high-efficiency crystallization recovery device for sodium sulfate wastewater

Abstract

The utility model relates to the technical field of sodium sulfate wastewater treatment, especially to a sodium sulfate wastewater efficient crystallization recovery device, including evaporimeter, circulating assembly and stirring subassembly, evaporimeter inside is provided with heating chamber, heating chamber side is provided with steam pipe and water outlet pipe respectively, the bottom of evaporimeter is provided with collecting pipe, the top of evaporimeter is equipped with upper baffle and is seted up with feeding port on the upper baffle, circulating assembly includes circulating pump, circulating pump is fixed in the upper baffle and is with evaporimeter conduction, the outside of circulating pump is connected with compressor, one side of compressor is connected with circulating pipe, the lower extreme of circulating pipe is connected with heating chamber conduction, the outside of circulating pipe is equipped with heat preservation cover, can realize the recycling use to steam, significantly improves energy utilization efficiency, need not directly discharging steam heat, can save a large amount of steam consumption, reduces production cost, need not using additional cooling water, has reduced waste water discharge.

Description

Technical Field

[0001] This utility model relates to the field of sodium sulfate wastewater treatment technology, and in particular to a high-efficiency crystallization and recovery device for sodium sulfate wastewater. Background Technology

[0002] With the rapid development of industries such as chemical and dyeing, the discharge of sodium sulfate wastewater is increasing day by day. The wastewater is characterized by complex composition and high salt concentration. If it is discharged directly, it will not only cause environmental problems such as soil salinization and water ecological imbalance, but also waste the recyclable resources. In industry, the evaporation crystallization method is mostly used to treat sodium sulfate wastewater to achieve resource recovery.

[0003] The invention patent with publication number CN112777828A in the prior art uses a rotating motor, a discharge pipe, a storage pipe, a support frame, a rotating shaft, a heating plate, a heating chamber, and a rotating table to heat the wastewater. At the same time, it can drive the wastewater to rotate and stir, which greatly improves the heating efficiency and makes the evaporation efficiency higher.

[0004] However, it adopts a single-effect evaporation mode, and the secondary steam generated by evaporation is directly discharged, which not only causes a large amount of latent heat loss, but also exacerbates the energy consumption of equipment operation. On the other hand, the lack of a steam recovery and reuse system means that the subsequent evaporation process needs to consume a large amount of fresh steam to maintain the temperature, resulting in a low overall energy efficiency ratio and high processing costs. Therefore, we need to upgrade and transform the existing technology to overcome the existing problems and shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency crystallization and recovery device for sodium sulfate wastewater to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] Design a high-efficiency crystallization and recovery device for sodium sulfate wastewater, including an evaporator, a circulation component and a stirring component. The evaporator is equipped with a heating chamber inside, and a steam pipe and a water outlet pipe are respectively arranged on the side of the heating chamber. A collection pipe is arranged at the bottom of the evaporator, and an upper cover plate is provided on the top of the evaporator with a feed inlet on the upper cover plate.

[0008] The circulation assembly includes a circulation pump, which is fixed to the upper cover and connected to the evaporator. A compressor is connected to the outside of the circulation pump, and a circulation pipe is connected to one side of the compressor. The lower end of the circulation pipe is connected to the heating chamber.

[0009] Preferably, an insulation sleeve is provided on the outside of the circulation pipe, and a solenoid valve is installed at the connection between the circulation pipe and the heating chamber.

[0010] Preferably, the steam pipe is connected to an external steam generator and is equipped with a solenoid valve, and the water outlet pipe is connected to an external drainage device and is equipped with a solenoid valve.

[0011] Preferably, the stirring assembly includes an electric motor, the lower end of which is connected to a main stirring rod, and the main stirring rod is provided with main stirring blades.

[0012] Preferably, a connecting sleeve is installed on the main stirring rod, a side stirring rod is fixed to the side of the connecting sleeve, and a side stirring blade is provided on the side stirring rod.

[0013] Preferably, the upper end of the main stirring rod is provided with a limiting sleeve and the limiting sleeve is fixed to the lower end of the upper cover plate, and the lower end of the motor is provided with a sealing ring and the sealing ring is attached to the upper end of the upper cover plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model has a circulation component installed in the device. The circulation pump extracts the steam in the evaporator and sends it to the compressor. The compressor pressurizes and heats the steam. The pressurized and heated steam is then introduced into the heating chamber through the circulation pipe. This enables the recycling of steam, which significantly improves energy efficiency. There is no need to directly discharge the heat of the steam, which can save a lot of steam consumption, reduce production costs, eliminate the need for additional cooling water, and reduce wastewater discharge.

[0016] 2. This utility model incorporates a stirring assembly within the device. An electric motor drives the main stirring rod and main stirring blades to rotate, which in turn drives the side stirring rods and side stirring blades to rotate. This enables the stirring of sodium sulfate wastewater, improving the heating uniformity of the wastewater and enhancing the equipment's evaporation and crystallization efficiency. The side stirring rods and side stirring blades effectively prevent eddy currents, reduce crystal agglomeration, and effectively promote heat exchange between high-temperature steam and wastewater, further improving the heating uniformity of the wastewater.

[0017] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1This is a schematic diagram of the overall structure according to the present utility model;

[0020] Figure 2 This is a cross-sectional view of the internal structure according to the present invention;

[0021] Figure 3 An exploded view of the circulation component according to this utility model;

[0022] Figure 4 This is an exploded view of the stirring assembly according to the present invention.

[0023] In the diagram: 1. Evaporator; 11. Heating chamber; 12. Steam pipe; 13. Water outlet pipe; 14. Collection pipe; 2. Top cover plate; 21. Feed inlet; 3. Circulation assembly; 31. Circulation pump; 32. Compressor; 33. Circulation pipe; 34. Insulation sleeve; 4. Stirring assembly; 41. Motor; 42. Main stirring rod; 43. Main stirring blade; 44. Connecting sleeve; 45. Side stirring rod; 46. Side stirring blade; 47. Limiting sleeve; 48. Sealing ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 As shown in Figure 4, this embodiment provides a high-efficiency crystallization and recovery device for sodium sulfate wastewater, including an evaporator 1, a circulation component 3, and a stirring component 4. The evaporator 1 is equipped with a heating chamber 11, and a steam pipe 12 and a water outlet pipe 13 are respectively provided on the side of the heating chamber 11. A collection pipe 14 is provided at the bottom of the evaporator 1, and an upper cover plate 2 is provided at the top of the evaporator 1 with a feed inlet 21. The steam pipe 12 is connected to an external steam generator and a solenoid valve is installed on the steam pipe 12. The water outlet pipe 13 is connected to an external drainage device and a solenoid valve is installed on the water outlet pipe 13.

[0026] In this embodiment, the circulation component 3 includes a circulation pump 31, which is fixed to the upper cover plate 2 and connected to the evaporator 1. A compressor 32 is connected to the outside of the circulation pump 31, and a circulation pipe 33 is connected to one side of the compressor 32. The lower end of the circulation pipe 33 is connected to the heating chamber 11. An insulation sleeve 34 is fitted on the outside of the circulation pipe 33. A solenoid valve is installed at the connection between the circulation pipe 33 and the heating chamber 11. The steam in the evaporator 1 is extracted by the circulation pump 31 and delivered to the compressor 32. The compressor 32 pressurizes and heats the steam. The pressurized and heated steam is then introduced into the heating chamber 11 through the circulation pipe 33. This enables the recycling of steam, significantly improves energy efficiency, eliminates the need to directly discharge steam heat, saves a large amount of steam consumption, reduces production costs, eliminates the need for additional cooling water, and reduces wastewater discharge.

[0027] In this embodiment, the stirring assembly 4 includes a motor 41, a main stirring rod 42 connected to the lower end of the motor 41, a main stirring blade 43 provided on the main stirring rod 42, a connecting sleeve 44 installed on the main stirring rod 42, a side stirring rod 45 fixed to the side of the connecting sleeve 44, a side stirring blade 46 provided on the side stirring rod 45, a limiting sleeve 47 provided at the upper end of the main stirring rod 42 and fixed to the lower end of the upper cover plate 2, and a sealing ring 48 provided at the lower end of the motor 41 and attached to the upper end of the upper cover plate 2. The motor 41 drives the main stirring rod 42 and the main stirring blade 43 to rotate, and the main stirring rod 42 synchronously drives the side stirring rod 45 and the side stirring blade 46 to rotate, thereby realizing the stirring operation of sodium sulfate wastewater, improving the heating uniformity of the wastewater, improving the evaporation and crystallization efficiency of the equipment for wastewater, and the side stirring rod 45 and the side stirring blade 46 can effectively prevent the generation of eddies, reduce crystal agglomeration, effectively promote the heat exchange between high-temperature steam and wastewater, and further improve the heating uniformity of wastewater.

[0028] The working principle and process of this utility model are as follows: In use, sodium sulfate wastewater is introduced into the evaporator 1 through the feed inlet 21, and steam is introduced into the heating chamber 11 through the steam pipe 12. The steam heats and evaporates the sodium sulfate wastewater in the evaporator 1. The main stirring rod 42 and the main stirring blade 43 are driven to rotate by the motor 41. The main stirring rod 42 synchronously drives the side stirring rod 45 and the side stirring blade 46 to rotate, thereby realizing the stirring operation of the sodium sulfate wastewater, improving the heating uniformity of the wastewater, and improving the evaporation and crystallization efficiency of the equipment. During this process, the steam in the evaporator 1 is extracted by the circulation pump 31 and sent to the compressor 32. The compressor 32 pressurizes and heats the steam, and the pressurized and heated steam is introduced into the heating chamber 11 through the circulation pipe 33, which realizes the recycling of steam and significantly improves energy utilization efficiency.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A high-efficiency crystallization and recovery device for sodium sulfate wastewater, characterized in that, It includes an evaporator (1), a circulation assembly (3) and a stirring assembly (4). The evaporator (1) is equipped with a heating chamber (11). A steam pipe (12) and a water outlet pipe (13) are respectively provided on the side of the heating chamber (11). A collection pipe (14) is provided at the bottom of the evaporator (1). The top of the evaporator (1) is provided with an upper cover plate (2) and a feed inlet (21) is provided on the upper cover plate (2). The circulation assembly (3) includes a circulation pump (31), which is fixed on the upper cover plate (2) and connected to the evaporator (1). A compressor (32) is connected to the outside of the circulation pump (31), and a circulation pipe (33) is connected to one side of the compressor (32). The lower end of the circulation pipe (33) is connected to the heating chamber (11).

2. The sodium sulfate wastewater high-efficiency crystallization recovery device according to claim 1, characterized in that: The circulation pipe (33) is fitted with an insulation sleeve (34) on the outside, and a solenoid valve is installed at the connection between the circulation pipe (33) and the heating chamber (11).

3. The sodium sulfate wastewater high-efficiency crystallization and recovery device according to claim 1, characterized in that: The steam pipe (12) is connected to an external steam generator and is equipped with a solenoid valve. The water outlet pipe (13) is connected to an external drainage device and is equipped with a solenoid valve.

4. The high-efficiency crystallization and recovery device for sodium sulfate wastewater according to claim 1, characterized in that: The stirring assembly (4) includes a motor (41), the lower end of which is connected to a main stirring rod (42), and the main stirring rod (42) is provided with a main stirring blade (43).

5. The high-efficiency crystallization and recovery device for sodium sulfate wastewater according to claim 4, characterized in that: A connecting sleeve (44) is installed on the main stirring rod (42), and a side stirring rod (45) is fixed on the side of the connecting sleeve (44). A side stirring blade (46) is provided on the side stirring rod (45).

6. The high-efficiency crystallization and recovery device for sodium sulfate wastewater according to claim 4, characterized in that: The upper end of the main stirring rod (42) is provided with a limiting sleeve (47) and the limiting sleeve (47) is fixed to the lower end of the upper cover plate (2). The lower end of the motor (41) is provided with a sealing ring (48) and the sealing ring (48) is attached to the upper end of the upper cover plate (2).

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