Salt separation device for zero-discharge treatment of industrial wastewater

Abstract

This utility model relates to the field of wastewater desalination technology, and more particularly to a salt separation device for zero-discharge treatment of industrial wastewater, including a pure salt crystallizer; it also includes a support plate, a C-shaped plate, a drive plate, a connecting rod, a bidirectional lead screw, a connecting block, and a shielding plate. Two support plates are symmetrically arranged on the left and right sides of the pure salt crystallizer. A C-shaped plate is connected to the side of the support plate away from the pure salt crystallizer. Two drive plates are symmetrically arranged on the front and rear sides inside the C-shaped plate. A connecting rod is arranged in the middle of the top of the drive plate. A bidirectional lead screw is arranged in the middle of the inside of the C-shaped plate, and the bidirectional lead screw is threadedly connected to the drive plate. In this utility model, rotating the handle rotates the bidirectional lead screw, which drives the two drive plates to move closer to each other. The drive plate drives the shielding plate to move towards the pipeline through the connecting rod until the two shielding plates are combined. The combined shielding plate surrounds the pipeline, realizing the function of pipeline shielding.

Description

Technical Field

[0001] This utility model relates to the field of wastewater desalination technology, and in particular to a desalination device for zero-discharge treatment of industrial wastewater. Background Technology

[0002] The high-salt wastewater desalination and crystallization process is the technological foundation for realizing zero-discharge wastewater and the resource utilization of crystalline salt. The "13th Five-Year Plan for Demonstration of Coal Deep Processing Industry" issued by the National Energy Administration in 2017 also clearly requires that newly built demonstration projects without wastewater receiving bodies utilize technologies such as crystallization and desalination to utilize high-salt wastewater resources. Existing desalination devices used for zero-discharge treatment of industrial wastewater require the wastewater to be transported through pipelines. When foreign objects collide with the pipelines, high-pressure wastewater will leak out, causing safety hazards. In this case, it is necessary to cover and protect the pipelines.

[0003] Commonly used salt separation devices for zero-discharge treatment of industrial wastewater only include salt separation functions. The pretreated high-salt wastewater is first further concentrated and reduced in volume through an evaporator until the dominant salt components are close to saturation. Then it enters a pure salt crystallizer to extract most of the sodium chloride or sodium sulfate. The concentration ratio of the pure salt crystallizer is controlled so that the secondary dominant salt components are close to saturation. The mother liquor discharged from the pure salt crystallizer enters a mixed salt crystallizer to obtain impurities. However, it lacks the function of pipe shielding, which cannot guarantee the safety of the pipes. It is easy for high-pressure wastewater to leak when foreign objects hit the pipes, thus creating safety hazards and affecting the safety of processing.

[0004] Therefore, in view of the lack of pipe shielding function in the above-mentioned salt separation device for zero discharge treatment of industrial wastewater, which is prone to high-pressure wastewater leakage when foreign objects hit the pipe, thus causing safety hazards and affecting processing safety, a salt separation device for zero discharge treatment of industrial wastewater can be designed. Utility Model Content

[0005] To overcome the common problem that common desalination devices used for zero-discharge treatment of industrial wastewater lack pipe shielding, which cannot guarantee pipe safety and is prone to high-pressure wastewater leakage when foreign objects hit the pipe, thus creating safety hazards and affecting processing safety.

[0006] The technical solution of this utility model is as follows: a salt separation device for zero-discharge treatment of industrial wastewater, including a pure salt crystallizer; it also includes a support plate, a C-shaped plate, a drive plate, a connecting rod, a bidirectional screw, a connecting block, and a shielding plate. Two support plates are symmetrically arranged on the left and right sides of the pure salt crystallizer. A C-shaped plate is connected to the side of the support plate away from the pure salt crystallizer. Two drive plates are symmetrically arranged on the front and rear sides inside the C-shaped plate. A connecting rod is arranged in the middle of the top of the drive plate. A bidirectional screw is arranged in the middle of the inside of the C-shaped plate. The bidirectional screw is threadedly connected to the drive plate. A connecting block is arranged at the top of the connecting rod near the support plate. A shielding plate is arranged on the side of the connecting block away from the connecting rod.

[0007] Preferably, rotating the handle rotates the bidirectional lead screw, which in turn drives two drive plates closer together. The drive plates, through a connecting rod, move the shielding plate towards the pipeline until the two shielding plates are combined. The combined shielding plate surrounds the entire pipeline, thus achieving the function of pipeline shielding. This addresses the common problem of common salt separation devices used for zero-discharge treatment of industrial wastewater, which only include salt separation. The pretreated high-salt wastewater is first further concentrated and reduced in an evaporator until the dominant salt component is close to saturation. Then, it enters a pure salt crystallizer to extract most of the sodium chloride or sodium sulfate. The concentration ratio of the pure salt crystallizer is controlled so that the secondary dominant salt component is close to saturation. The mother liquor discharged from the pure salt crystallizer enters a mixed salt crystallizer to obtain impurities. However, this type of device lacks the function of pipeline shielding, which cannot guarantee pipeline safety. It is easy for high-pressure wastewater to leak when a foreign object hits the pipeline, thus creating a safety hazard and affecting processing safety.

[0008] Preferably, the rear end of the bidirectional lead screw is rotatably connected to the rear side inside the C-shaped plate, and the front end of the bidirectional lead screw passes through the C-shaped plate and is connected to a rotating handle.

[0009] Preferably, a groove is provided through the middle of the bottom of the C-shaped plate, and a slider is provided in the middle of the bottom of the drive plate, with the slider slidably connected to the groove.

[0010] Preferably, the bottom of the pure salt crystallizer is symmetrically provided with four first support legs, and the center of the top of the pure salt crystallizer is provided with a first connector.

[0011] Preferably, a first pipe is connected to the middle of the left side of the pure salt crystallizer, and a second connector is connected to the left end of the first pipe.

[0012] Preferably, the bottom of the second connector is connected to an evaporator, and four second support legs are symmetrically arranged at the bottom of the evaporator. A second pipe is connected to the right side of the first connector.

[0013] Preferably, the right end of the second pipe is connected to a salt crystallizer, four third support legs are symmetrically arranged at the bottom of the salt crystallizer, and a third connector is arranged at the center of the top of the salt crystallizer.

[0014] The beneficial effects of this utility model are:

[0015] 1. By rotating the handle, the double-acting screw is turned, which in turn drives the two drive plates to move closer to each other. The drive plates drive the shielding plate to move towards the pipe through the connecting rod until the two shielding plates are combined together. The two combined shielding plates surround the pipe, thus realizing the function of pipe shielding. Attached Figure Description

[0016] Figure 1 The diagram shown is a front view of the overall structure of the salt separation device for zero-discharge treatment of industrial wastewater according to this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the support plate structure of the salt separation device for zero-discharge treatment of industrial wastewater according to this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the structure of the C-shaped plate in the salt separation device for zero-discharge treatment of industrial wastewater according to this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the structure of the shielding assembly of the salt separation device for zero-discharge treatment of industrial wastewater according to this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Pure salt crystallizer; 2. Support plate; 3. C-shaped plate; 4. Slide groove; 5. Drive plate; 6. Slider; 7. Connecting rod; 8. Two-way lead screw; 9. Rotating handle; 10. Connecting block; 11. Cover plate; 12. First support leg; 13. First connector; 14. First pipe; 15. Second connector; 16. Evaporator; 17. Second support leg; 18. Second pipe; 19. Mixed salt crystallizer; 20. Third support leg; 21. Third connector. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a salt separation device for zero-discharge treatment of industrial wastewater, including a pure salt crystallizer 1; it also includes a support plate 2, a U-shaped plate 3, a drive plate 5, a connecting rod 7, a bidirectional lead screw 8, a connecting block 10, and a shielding plate 11. Two support plates 2 are symmetrically arranged on the left and right sides of the pure salt crystallizer 1. The U-shaped plate 3 is connected to the side of the support plate 2 away from the pure salt crystallizer 1. Two drive plates 5 are symmetrically arranged on the front and rear sides inside the U-shaped plate 3. A connecting rod 7 is located in the middle of the top of the drive plate 5. A bidirectional lead screw 8 is located in the middle of the inside of the U-shaped plate 3, and the bidirectional lead screw 8 is threadedly connected to the drive plate 5. A connecting block 10 is located at the top of the connecting rod 7 near the support plate 2, and a shielding plate 11 is located on the side of the connecting block 10 away from the connecting rod 7. By rotating the handle 9, the bidirectional lead screw 8 is rotated, causing the two drive plates 5 to move closer together. The drive plate 5 moves the shield plate 11 towards the pipeline via the connecting rod 7 until the two shield plates 11 are combined. The combined shield plates 11 surround the pipeline, thus achieving the function of pipeline shielding. This solves the problem of common salt separation devices used for zero-discharge treatment of industrial wastewater, which only have the function of salt separation. The pretreated high-salt wastewater is first further concentrated and reduced by the evaporator 16 to make the dominant salt component close to saturation. Then it enters the pure salt crystallizer 1 to extract most of the sodium chloride or sodium sulfate. The concentration ratio of the pure salt crystallizer 1 is controlled so that the secondary dominant salt component is close to saturation. The mother liquor discharged from the pure salt crystallizer 1 enters the mixed salt crystallizer 19 to obtain impurities. However, it lacks the function of pipeline shielding and cannot guarantee pipeline safety. It is easy for high-pressure wastewater to leak when a foreign object hits the pipeline, thus causing safety hazards and affecting the processing safety.

[0023] Please see Figures 2-4 In this embodiment, a first pipe 14 is connected to the middle of the left side of the pure salt crystallizer 1. A second connector 15 is connected to the left end of the first pipe 14. An evaporator 16 is connected to the bottom of the second connector 15. Four second support legs 17 are symmetrically arranged at the bottom of the evaporator 16. A second pipe 18 is connected to the right side of the first connector 13. A mixed salt crystallizer 19 is connected to the right end of the second pipe 18. Four third support legs 20 are symmetrically arranged at the bottom of the mixed salt crystallizer 19. A third connector 21 is arranged at the center of the top of the mixed salt crystallizer 19. High-salt wastewater is concentrated and reduced through the evaporator 16. Then, the high-salt wastewater enters the interior of the pure salt crystallizer 1 through the first pipe 14 to extract most of the sodium chloride or sodium sulfate. After extraction, the mother liquor discharged from the pure salt crystallizer 1 enters the interior of the mixed salt crystallizer 19 through the second pipe 18 to obtain mixed salt.

[0024] Please see Figures 1-4In this embodiment, the rear end of the bidirectional lead screw 8 is rotatably connected to the rear side inside the C-shaped plate 3. The front end of the bidirectional lead screw 8 passes through the C-shaped plate 3 and is connected to a rotating handle 9. A groove 4 is provided through the middle of the bottom end inside the C-shaped plate 3. A slider 6 is provided in the middle of the bottom of the drive plate 5. The slider 6 is slidably connected to the groove 4. Four first support legs 12 are symmetrically arranged at the bottom of the pure salt crystallizer 1. A first connector 13 is provided at the center of the top of the pure salt crystallizer 1. By rotating the bidirectional lead screw 8 through the rotating handle 9, the bidirectional lead screw 8 drives the two drive plates 5 to move closer to each other. The drive plates 5 drive the shielding plate 11 to move towards the pipe through the connecting rod 7 until the two shielding plates 11 are combined together. The two combined shielding plates 11 surround the pipe, realizing the function of pipe shielding. This prevents high-pressure wastewater from leaking when foreign objects hit the pipe, thus causing safety hazards and affecting processing safety.

[0025] During operation, rotating the handle 9 rotates the bidirectional lead screw 8, which in turn drives the two drive plates 5 to move closer together. The drive plates 5, through the connecting rod 7, move the shielding plate 11 towards the pipeline until the two shielding plates 11 are combined. The combined shielding plate 11 surrounds the entire pipeline. The high-salt wastewater is concentrated and reduced in volume through the evaporator 16. Then, the high-salt wastewater enters the pure salt crystallizer 1 through the first pipe 14 to extract most of the sodium chloride or sodium sulfate. After extraction, the mother liquor discharged from the pure salt crystallizer 1 enters the mixed salt crystallizer 19 through the second pipe 18 to obtain mixed salts, thus realizing the function of pipeline shielding.

[0026] Through the above steps, rotating the handle 9 rotates the bidirectional lead screw 8, which in turn drives the two drive plates 5 to move closer to each other. The drive plates 5, through the connecting rod 7, drive the shielding plate 11 to move towards the pipeline until the two shielding plates 11 are combined together. The combined shielding plate 11 surrounds the entire pipeline, realizing the function of pipeline shielding. This solves the problem of common salt separation devices used for zero-discharge treatment of industrial wastewater, which only include salt separation function. The pretreated high-salt wastewater is first further concentrated and reduced in volume through the evaporator 16, so that the dominant salt component is close to saturation. Then it enters the pure salt crystallizer 1 to extract most of the sodium chloride or sodium sulfate. The concentration ratio of the pure salt crystallizer 1 is controlled so that the secondary dominant salt component is close to saturation. The mother liquor discharged from the pure salt crystallizer 1 enters the mixed salt crystallizer 19 to obtain impurities. However, it lacks the function of pipeline shielding, which cannot guarantee pipeline safety. It is easy for high-pressure wastewater to leak when a foreign object hits the pipeline, thus causing safety hazards and affecting processing safety.

Claims

1. A salt separation device for zero-discharge treatment of industrial wastewater, comprising a pure salt crystallizer (1); characterized in that: It also includes a support plate (2), a C-shaped plate (3), a drive plate (5), a connecting rod (7), a two-way screw (8), a connecting block (10), and a shielding plate (11). Two support plates (2) are symmetrically arranged on the left and right sides of the pure salt crystallizer (1). The side of the support plate (2) away from the pure salt crystallizer (1) is connected to the C-shaped plate (3). Two drive plates (5) are symmetrically arranged on the front and back sides inside the C-shaped plate (3). A connecting rod (7) is arranged in the middle of the top of the drive plate (5). A two-way screw (8) is arranged in the middle of the inside of the C-shaped plate (3). The two-way screw (8) is threadedly connected to the drive plate (5). A connecting block (10) is arranged on the top of the side of the connecting rod (7) close to the support plate (2). A shielding plate (11) is arranged on the side of the connecting block (10) away from the connecting rod (7).

2. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 1, characterized in that: The rear end of the bidirectional lead screw (8) is rotatably connected to the rear side inside the swivel plate (3), and the front end of the bidirectional lead screw (8) passes through the swivel plate (3) and is connected to a rotating handle (9).

3. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 1, characterized in that: A groove (4) is provided through the middle of the bottom of the C-shaped plate (3), and a slider (6) is provided in the middle of the bottom of the drive plate (5). The slider (6) is slidably connected to the groove (4).

4. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 1, characterized in that: The bottom of the pure salt crystallizer (1) is symmetrically provided with four first support legs (12), and the center of the top of the pure salt crystallizer (1) is provided with a first connector (13).

5. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 4, characterized in that: The middle of the left side of the pure salt crystallizer (1) is connected to the first pipe (14), and the left end of the first pipe (14) is connected to the second connector (15).

6. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 5, characterized in that: The bottom of the second connector (15) is connected to the evaporator (16), and four second support legs (17) are symmetrically arranged at the bottom of the evaporator (16). The right side of the first connector (13) is connected to the second pipe (18).

7. The salt separation device for zero-discharge treatment of industrial wastewater according to claim 6, characterized in that: The right end of the second pipe (18) is connected to a salt crystallizer (19). Four third support legs (20) are symmetrically arranged at the bottom of the salt crystallizer (19). A third connector (21) is arranged at the center of the top of the salt crystallizer (19).

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