Evaporative concentration tank for treating high-salinity wastewater
By introducing a horizontal scraper, a vertical scraper, and a rotating plate structure into the evaporation and concentration tank, combined with a pretreatment box and a debris collection frame, the problem of solid waste in high-salt wastewater damaging the equipment was solved, achieving efficient concentration and scale prevention layer formation, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINLIN ENERGY SAVING EVAPORATION EQUIP CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-04
AI Technical Summary
When treating high-salt wastewater, existing evaporation and concentration equipment is prone to damage from solid waste, which can reduce heat transfer efficiency and form hard scale, thus affecting production efficiency.
An evaporation and concentration tank with horizontal scrapers, vertical scrapers, and rotating plates was designed, combined with a pretreatment box and a collection frame, to scrape off crystals on the inner wall and filter solid waste, prevent scale formation, and improve concentration efficiency.
It effectively prevents the formation of crystals on the inner wall, improves the evaporation and concentration efficiency, ensures stable equipment operation, and reduces the damage of solid waste to the equipment.
Smart Images
Figure CN224590729U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of evaporation and concentration tank technology, and in particular to an evaporation and concentration tank for treating high-salt wastewater. Background Technology
[0002] In the production processes of industries such as chemical, pharmaceutical, and food processing, large amounts of wastewater with high salt concentrations are generated. Direct discharge of this type of wastewater would cause serious environmental pollution, thus requiring concentration treatment to achieve water-salt separation and resource recovery. Currently, commonly used evaporation and concentration equipment mainly includes falling film evaporators, thin-film evaporators, and vacuum concentration tanks. However, high-salt wastewater often contains mixed solid waste. If solid waste enters the evaporation and concentration tank along with the wastewater, it will not only affect the evaporation and concentration efficiency but also easily damage the equipment. Furthermore, high-salt wastewater tends to form a hard scale layer on the heating wall during evaporation, leading to a decrease in heat transfer efficiency and requiring frequent shutdowns for cleaning, affecting continuous production efficiency. Therefore, it is necessary to propose an evaporation and concentration tank for treating high-salt wastewater. Utility Model Content
[0003] The purpose of this invention is to address the problems existing in the background technology by proposing an evaporation and concentration tank for treating high-salt wastewater.
[0004] The technical solution of this utility model: An evaporation and concentration tank for treating high-salinity wastewater, comprising an evaporation and concentration tank body, a heating chamber formed between the inner and outer walls of the evaporation and concentration tank body, a heating layer provided inside the heating chamber, a motor mounted on the top surface of the evaporation and concentration tank body, the output end of the motor extending through into the interior of the evaporation and concentration tank body and having a rotating shaft, a support frame at the bottom end of the rotating shaft, and horizontal scrapers on both the left and right sides of the rotating shaft and the support frame, with the ends of every two horizontal scrapers on the same side away from the rotating shaft having the same vertical scraper, and every two horizontal scrapers on the same side having a vertical scraper connected to each other. A rotating rod is rotatably mounted on one side of the evaporation and concentration tank. Each rotating rod has a rotating plate on its outer ring. A through pipe is mounted at the top of the evaporation and concentration tank body. A pretreatment box is mounted on the left side of the through pipe. A feed pipe is mounted on the top surface of the pretreatment box. A second motor is mounted on the left side of the pretreatment box. The output end of the second motor extends through into the interior of the pretreatment box and is equipped with a threaded rod. A push plate is threaded to the outer ring of the right end of the threaded rod. A filter plate is mounted on the right inner wall of the pretreatment box. A partition is mounted on the bottom left side of the filter plate. A pull-out groove is opened on the left side of the pretreatment box. A collection frame is slidably mounted inside the pull-out groove.
[0005] Preferably, the top surface of the evaporation and concentration tank body is provided with a steam outlet.
[0006] Preferably, the bottom surface of the evaporation and concentration tank body is provided with a crystallization outlet, and the top of the crystallization outlet is provided with an electronic valve.
[0007] Preferably, the bottom surface of the support frame is rotatably connected to the inner bottom surface of the evaporation and concentration tank body, the bottom surface of the support frame is provided with an L-shaped ring bar, and the inner bottom surface of the evaporation and concentration tank body is provided with an L-shaped ring groove, and the L-shaped ring bar and the L-shaped ring groove are rotatably connected.
[0008] Preferably, the side of each vertical scraper away from the rotating shaft is in contact with the inner wall of the evaporation and concentration tank body.
[0009] Preferably, the rotating plate is made of soft silicone.
[0010] Preferably, the inner right wall of the pretreatment box is provided with a slot, the push plate is slidably installed in correspondence with the slot, and the bottom surface of the push plate is in contact with the top surface of the filter plate.
[0011] Preferably, a guide rod is provided between the inner walls of the left and right sides of the pretreatment box, and the guide rod is slidably connected to the push plate.
[0012] Preferably, guide grooves are provided on both the front and rear sides of the pull-out groove, and guide strips are provided on both the front and rear sides of the collection frame, with the guide strips slidably connected to the guide grooves.
[0013] Compared with the prior art, the present invention has the following beneficial technical effects: This invention, by setting horizontal and vertical scraper bars, facilitates continuous scraping and cleaning of the inner wall of the evaporation and concentration tank, preventing crystals from condensing and forming a hard scale layer inside the tank. The rotating rod and plate prevent crystals from being broken during wastewater agitation, improving concentration efficiency and reducing dissolution. The pretreatment box connected to the impurity collection frame filters out solid waste from high-salt wastewater, ensuring the efficiency of subsequent evaporation and concentration. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another perspective; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a cross-sectional structural diagram of the pretreatment box in this utility model.
[0015] Reference numerals in the attached diagram: 1. Evaporation and concentration tank body; 2. Heating layer; 3. Motor 1; 4. Rotating shaft; 5. Support frame; 6. Horizontal scraper; 7. Vertical scraper; 8. Rotating rod; 9. Rotating plate; 10. Through pipe; 11. Pretreatment box; 12. Feed pipe; 13. Motor 2; 14. Threaded rod; 15. Push plate; 16. Filter plate; 17. Baffle plate; 18. Impurity collection frame; 19. Steam outlet; 20. Crystallization outlet; 21. Electronic valve; 22. L-shaped ring; 23. Guide rod; 24. Guide bar. Detailed Implementation
[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example
[0017] like Figures 1 to 4 As shown, the present invention proposes an evaporation and concentration tank for treating high-salt wastewater, comprising an evaporation and concentration tank body 1, a steam outlet 19 on the top surface of the evaporation and concentration tank body 1, the evaporation and concentration tank body 1 and the steam outlet 19 being fixedly connected to each other to facilitate the discharge of steam generated by evaporation through the steam outlet 19, a crystallization outlet 20 on the bottom surface of the evaporation and concentration tank body 1, the bottom surface of the evaporation and concentration tank body 1 and the crystallization outlet 20 being fixedly connected to each other, an electronic valve 21 on the top of the crystallization outlet 20, the discharge of the crystallization outlet 20 being controlled by the electronic valve 21, a heating chamber being opened between the inner and outer walls of the evaporation and concentration tank body 1, a heating layer 2 being provided inside the heating chamber, the heating layer 2 being fixedly installed inside the heating chamber, the wastewater inside the evaporation and concentration tank body 1 being heated by the heating layer 2, a motor 3 being provided on the top surface of the evaporation and concentration tank body 1, the top surface of the evaporation and concentration tank body 1 and the bottom surface of the motor 3 being fixedly connected, the output end of the motor 3 extending through into the interior of the evaporation and concentration tank body 1 and being provided with a rotating shaft 4; The output end of motor 3 is rotatably connected to the evaporator-concentrator body 1, and the output end of motor 3 is fixedly connected to the top of rotating shaft 4. A support frame 5 is provided at the bottom of rotating shaft 4, and the bottom of rotating shaft 4 is fixedly connected to the top surface of support frame 5. The bottom surface of support frame 5 is rotatably connected to the inner bottom surface of evaporator-concentrator body 1. An L-shaped ring 22 is provided on the bottom surface of support frame 5, and the bottom surface of support frame 5 is fixedly connected to the top surface of L-shaped ring 22. An L-shaped annular groove is formed on the inner bottom surface of evaporator-concentrator body 1, and L-shaped ring 22 is rotatably connected to the L-shaped annular groove. The L-shaped groove can guide and limit the L-shaped ring bar 22, thereby guiding and limiting the running trajectory of the support frame 5. Horizontal scraper bars 6 are provided on both the left and right sides of the rotating shaft 4 and the support frame 5. The rotating shaft 4, the support frame 5 and the horizontal scraper bars 6 are fixedly connected. The same vertical scraper bar 7 is provided on the end of each pair of horizontal scraper bars 6 on the same side away from the rotating shaft 4. The horizontal scraper bars 6 and the vertical scraper bars 7 are fixedly connected. The side of each vertical scraper bar 7 away from the rotating shaft 4 is in contact with the inner wall of the evaporation and concentration tank body 1, which is convenient for scraping and cleaning the inner wall of the evaporation and concentration tank body 1. A rotating rod 8 is rotatably mounted on one side of each pair of horizontal scrapers 6 located close to each other. A rotating plate 9 is mounted on the outer ring of each rotating rod 8. The rotating rod 8 and the rotating plate 9 are fixedly connected. The rotating plate 9 is made of soft silicone to prevent the concentrated crystallized product from breaking during rotation and to reduce dissolution. A through pipe 10 is mounted at the top of the evaporation and concentration tank body 1, and the top of the evaporation and concentration tank body 1 is fixedly connected to the through pipe 10. A pretreatment box 11 is mounted on the left side of the through pipe 10, and the left side of the through pipe 10 is fixedly connected to the right side of the pretreatment box 11. The pretreatment box 11 is connected to the bottom of the feed pipe 12. The top of the pretreatment box 11 is fixedly connected to the bottom of the feed pipe 12. The left side of the pretreatment box 11 is fixedly connected to the right side of the motor 13. The output end of the motor 13 extends through into the interior of the pretreatment box 11 and is provided with a threaded rod 14. The output end of the motor 13 is rotatably connected to the pretreatment box 11. The output end of the motor 13 is fixedly connected to the left end of the threaded rod 14. A push plate 15 is threadedly connected to the outer ring of the right end of the threaded rod 14. A guide rod 23 is provided between the inner walls of the left and right sides of the pretreatment box 11. The guide rod 23 is fixedly installed inside the pretreatment box 11 and is slidably connected to the push plate 15. The guide rod 23 can guide and limit the push plate 15. A slot is provided on the inner wall of the right side of the pretreatment box 11. The push plate 15 is slidably installed in the slot, which facilitates hiding the push plate 15 in the slot. The bottom surface of the push plate 15 is in contact with the top surface of the filter plate 16. The movement of the push plate 15 can push the debris on the top surface of the filter plate 16. The filter plate 16 is provided on the inner wall of the right side of the pretreatment box 11 and is fixed. Installed on the right inner wall of the pretreatment box 11, a partition 17 is provided on the left bottom surface of the filter plate 16. The filter plate 16 and the partition 17 are fixedly connected. The bottom surface of the partition 17 is fixedly connected to the inner bottom surface of the pretreatment box 11. A pull-out groove is provided on the left side of the pretreatment box 11. A collection frame 18 is slidably arranged inside the pull-out groove. Guide grooves are provided on both the front and rear sides of the pull-out groove. Guide bars 24 are provided on both the front and rear sides of the collection frame 18. The front and rear sides of the collection frame 18 are fixedly connected to the guide bars 24. The guide bars 24 are slidably connected to the guide grooves. The guide bars 24 can be guided and limited through the guide grooves, thereby guiding and limiting the running trajectory of the collection frame 18.
[0018] In this embodiment, when using this device, high-salt wastewater is first fed into the pretreatment tank 11 through the feed pipe 12 and filtered through the filter plate 16 to isolate solid waste in the wastewater on the top surface of the filter plate 16. Then, motor 13 is run, and the output end of motor 13 drives the threaded rod 14 to rotate. The rotation of the threaded rod 14 can drive the push plate 15 to move to the left, thereby pushing the waste from the top surface of the filter plate 16 into the collection frame 18. Meanwhile, the wastewater flows into the evaporation and concentration tank body 1 through the pipe 10 and is heated by the heating layer 2. At the same time, motor 3 drives the rotating shaft 4 to rotate, which in turn drives the support frame 5 to rotate, thereby driving the horizontal scraper 6 and the vertical scraper 7 to rotate. This allows the inner wall of the evaporation and concentration tank body 1 to be constantly scraped and cleaned to prevent the formation of hard scale. Furthermore, the rotating rod 8 and the rotating plate 9 not only stir the wastewater but also prevent the crystals from being broken and dissolved, thus improving the concentration efficiency.
[0019] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.
Claims
1. An evaporation concentration tank for treating high-salinity wastewater, comprising an evaporation concentration tank body (1), characterized in that: A heating chamber is provided between the inner and outer walls of the evaporation and concentration tank body (1). A heating layer (2) is provided inside the heating chamber. A motor (3) is provided on the top surface of the evaporation and concentration tank body (1). The output end of the motor (3) extends through the interior of the evaporation and concentration tank body (1) and is provided with a rotating shaft (4). A support frame (5) is provided at the bottom end of the rotating shaft (4). Horizontal scrapers (6) are provided on both the left and right sides of the rotating shaft (4) and the support frame (5). The end of each pair of horizontal scrapers (6) on the same side away from the rotating shaft (4) is provided with the same vertical scraper (7). A rotating rod (8) is rotatably provided on the side of each pair of horizontal scrapers (6) that are close to each other. A rotating plate is provided on the outer ring of each rotating rod (8). 9) A through pipe (10) is provided at the top of the evaporation and concentration tank body (1). A pretreatment box (11) is provided on the left side of the through pipe (10). A feed pipe (12) is provided on the top surface of the pretreatment box (11). A motor (13) is provided on the left side of the pretreatment box (11). The output end of the motor (13) extends through into the interior of the pretreatment box (11) and is provided with a threaded rod (14). A push plate (15) is threaded to the outer ring of the right end of the threaded rod (14). A filter plate (16) is provided on the inner wall of the right side of the pretreatment box (11). A partition plate (17) is provided on the bottom left side of the filter plate (16). A pull-out groove is provided on the left side of the pretreatment box (11). A collection frame (18) is slidably provided inside the pull-out groove.
2. The evaporation concentration tank for treating high-salinity wastewater according to claim 1, characterized by The top surface of the evaporation and concentration tank body (1) is provided with a steam outlet (19).
3. The evaporation concentrator tank for treating high salinity wastewater of claim 1, wherein, The bottom surface of the evaporation and concentration tank body (1) is provided with a crystallization outlet (20), and the top of the crystallization outlet (20) is provided with an electronic valve (21).
4. The evaporation concentrator tank for treating high salinity wastewater of claim 1, wherein The bottom surface of the support frame (5) is rotatably connected to the inner bottom surface of the evaporation and concentration tank body (1). The bottom surface of the support frame (5) is provided with an L-shaped ring bar (22). The inner bottom surface of the evaporation and concentration tank body (1) is provided with an L-shaped ring groove. The L-shaped ring bar (22) is rotatably connected to the L-shaped ring groove.
5. The evaporation concentrator tank for treating high salinity wastewater of claim 1, wherein Each of the vertical scrapers (7) is in contact with the inner wall of the evaporation and concentration tank body (1) on the side away from the rotating shaft (4).
6. The evaporation concentrator tank for treating high salinity wastewater of claim 1, wherein The rotating plate (9) is made of soft silicone.
7. The evaporation concentrator tank for treating high salinity wastewater of claim 1, wherein The inner wall of the pretreatment box (11) is provided with a slot, and the push plate (15) is slidably installed in accordance with the slot. The bottom surface of the push plate (15) is in contact with the top surface of the filter plate (16).
8. The evaporation concentrator of claim 1, wherein the evaporation concentrator is configured to concentrate the high-salinity wastewater to a concentration of about 50,000 mg / L or more. A guide rod (23) is provided between the inner walls of the left and right sides of the pretreatment box (11), and the guide rod (23) is slidably connected to the push plate (15).
9. The evaporation concentrator of claim 1, wherein The front and rear sides of the pull-out groove are provided with guide grooves, and the front and rear sides of the collection frame (18) are provided with guide strips (24), and the guide strips (24) are slidably connected to the guide grooves.