Wastewater treatment multi-effect evaporator

Abstract

The invention relates to the technical field of wastewater treatment evaporation, in particular to a wastewater treatment multi-effect evaporator which comprises a concentration tank body, a wastewater evaporation mechanism, a salt removing mechanism, a dual-purpose mechanism and a uniform stirring mechanism, a permeable plate is fixedly connected to the outer wall of the top of the concentration tank body, and two telescopic rods are fixedly connected to the inner wall of the permeable plate; and one ends of the two telescopic rods are fixedly connected with the same liquid level adjusting plate. A dual-purpose mechanism is arranged in the wastewater evaporation mechanism, when a motor rotates anticlockwise, high-salinity wastewater on the inner wall of the wastewater evaporation mechanism can be stirred, the wastewater is heated evenly, and therefore the evaporation efficiency is improved, and when the motor rotates clockwise, the dual-purpose mechanism can be matched with a salt removing mechanism to lock a dual-purpose plate and a semi-permeable plate; and locking is conducted in cooperation with the salt cleaning mechanism, crystalline salt particles in the annular supporting shell are scraped and collected, and therefore blockage caused by crystalline salt is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment evaporation, in particular to a wastewater treatment multi-effect evaporator. Background Art

[0002] During the production and processing process, the factory will produce high-salt wastewater. High-salt wastewater refers to wastewater with a total salt mass fraction of more than 1%. The wastewater contains salt, organic matter, heavy metals, and even radioactive substances. Due to the high osmotic pressure of high-salt wastewater, it will cause the protoplasm of biological cells to separate. At the same time, high concentrations of inorganic salts are also highly toxic to biological cells. If high-salt wastewater is directly discharged into the environment without desalination treatment, it will seriously harm the ecological environment. At present, evaporation devices are mainly used to concentrate and crystallize high-salt wastewater; common evaporation devices include evaporation concentration tanks, in which multiple vertically arranged pipes are arranged inside the evaporation concentration tank. During the evaporation process, the wastewater flows from the top of the pipe to the bottom of the pipe, and high-temperature steam is introduced into the outer wall in the middle of multiple pipes, so that the wastewater is heated and evaporated during transportation through the pipe.

[0003] Patent publication number CN115477352B discloses an evaporation concentration tank for treating high-salt wastewater, comprising a concentration tank body, a partition fixed to the inner top of the concentration tank body, a wastewater evaporation module arranged between the partition and the inner bottom surface of the concentration tank body, the wastewater evaporation module comprising multiple groups of wastewater evaporation units, each group of wastewater evaporation units comprising multiple evaporation parts arranged at equal intervals, and the evaporation parts comprising an annular support shell.

[0004] However, the above-mentioned evaporation concentration tank for treating high-salt wastewater still has some shortcomings in actual use: 1. The wastewater in the annular intercepting pipe relies solely on the motor-driven belt to make multiple shafts rotate synchronously in the same direction, thereby improving the evaporation efficiency of the wastewater, and the effect is very small; 2. After the wastewater evaporates, the concentrated liquid flows into the collection box, but the crystals produced after evaporation are very likely to adhere to the inner wall of the annular intercepting pipe, which can easily cause the annular intercepting pipe to be blocked over time. Therefore, a solution to the above-mentioned problems is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a wastewater treatment multi-effect evaporator.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wastewater treatment multi-effect evaporator includes a concentrating tank body, a top outer wall of the concentrating tank body is fixedly connected to a breathable plate, an inner wall of the breathable plate is fixedly connected to two telescopic rods, one end of the two telescopic rods is fixedly connected to the same liquid level adjustment plate, a mounting plate is provided below the liquid level adjustment plate, the mounting plate is fixedly connected to the concentrating tank body, the outer wall of the concentrating tank body is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a first shaft, the first shaft is rotatably connected to the concentrating tank body, and further includes:

[0008] The wastewater evaporation mechanism is used to intercept and evaporate the wastewater, and the wastewater evaporation mechanism is installed on the mounting plate;

[0009] The salt cleaning mechanism is used to partially scrape and collect the crystallized salt particles inside the wastewater evaporation mechanism when the motor rotates clockwise. The salt cleaning mechanism is installed on the wastewater evaporation mechanism;

[0010] The dual-purpose mechanism is used to stir the high-salt wastewater on the inner wall of the wastewater evaporation mechanism when the motor rotates counterclockwise, so that it is heated evenly and thus the evaporation efficiency is improved. It can also be used to scrape and collect the crystallized salt particles inside the wastewater evaporation mechanism when the motor rotates clockwise and is locked in conjunction with the salt cleaning mechanism. The dual-purpose mechanism is installed on the wastewater evaporation mechanism;

[0011] And a stirring mechanism is used to drive the dual-purpose mechanism when the motor rotates counterclockwise, and the stirring mechanism is installed on the wastewater evaporation mechanism.

[0012] Preferably, the outer wall of the concentrating tank body is connected to an air inlet, the outer wall of the concentrating tank body away from the air inlet is connected to a liquid inlet, an air outlet is provided below the liquid inlet, the air outlet is connected to the concentrating tank body, and the inner wall of the concentrating tank body is rotatably connected to a rotating ring.

[0013] Preferably, the wastewater evaporation mechanism includes a water inlet pipe, an annular support shell, a collecting branch pipe, a valve, an annular intercepting ring and an annular rack. The water inlet pipe is fixedly connected to the mounting plate, the annular intercepting ring is communicated with the water inlet pipe, the collecting branch pipe is communicated with the annular intercepting ring, the valve is fixedly connected to the collecting branch pipe, the annular support shell is slidably connected to the annular intercepting ring, and the annular rack is fixedly connected to the annular intercepting ring.

[0014] Preferably, the salt cleaning mechanism includes a bracket ring, a circular slide rail, a first gear block group, a slider, a third gear, a one-way bearing, a connecting rod 1, a fourth shaft rod and a first cleaning plate. The bracket ring is fixedly connected to the collecting branch pipe, and a circular slide rail is provided on the outer wall of the bracket ring. The bracket ring is slidably connected to the slider through the circular slide rail. One end of the slider is rotatably connected to the third gear, and the outer wall of the third gear is engaged with the first gear block group. The first gear block group is fixedly connected to the bracket ring, the one-way bearing is fixedly connected to the third gear, the connecting rod 1 is rotatably connected to the one-way bearing, the fourth shaft rod is fixedly connected to the connecting rod 1, the first cleaning plate is fixedly connected to the fourth shaft rod, and the fourth shaft rod is slidably connected to the annular support shell.

[0015] Preferably, the dual-purpose mechanism includes a second shaft, a dual-purpose plate and a semi-permeable plate, the second shaft is rotatably connected to the annular intercepting ring, the semi-permeable plate is fixedly connected to the annular intercepting ring, and the dual-purpose plate is fixedly connected to the second shaft.

[0016] Preferably, the inner wall of the semi-permeable plate is slidably connected to two evenly distributed locking blocks, springs are fixedly connected between the two locking blocks and the semi-permeable plate, and the bottom outer wall of the dual-purpose plate is provided with two evenly distributed locking holes.

[0017] Preferably, the stirring mechanism includes a first gear, a ratchet, a pawl assembly and a second rack, the second rack is meshed with the annular intercepting ring, the pawl assembly is fixedly connected to the second rack, the second rack is rotatably connected to the ratchet via a set shaft, the ratchet is rotatably connected to the annular intercepting ring via a set shaft, the pawl assembly is meshed with the inner wall of the ratchet, the first gear is fixedly connected to the outer wall of the second shaft, and the outer walls of the first gear and the ratchet are sleeved with the same first chain.

[0018] Preferably, there are several wastewater evaporation mechanisms, the inner wall of each annular support shell is fixedly connected to a fixing frame, each fixing frame is fixedly connected to the first shaft, the inner wall of each annular support shell is connected to the same spray pipe, the outer wall of the spray pipe is fixedly connected to the rotating ring, the outer wall of each collecting branch pipe is connected to the same collecting pipe, and the outer wall of the collecting pipe is fixedly connected to the concentration tank body.

[0019] Compared with the existing technology, the beneficial effects of the present invention are:

[0020] The present invention arranges a dual-purpose mechanism inside the wastewater evaporation mechanism. When the motor rotates counterclockwise, the high-salt wastewater on the inner wall of the wastewater evaporation mechanism can be stirred so that it is heated evenly, thereby improving the evaporation efficiency. The motor can also be used to lock the dual-purpose plate and the semi-permeable plate in conjunction with the salt cleaning mechanism when the motor rotates clockwise. The salt cleaning mechanism is locked to scrape and collect the crystallized salt particles inside the annular support shell, thereby avoiding blockage caused by crystal salt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0023] Figure 3 It is a schematic diagram of the structure inside the concentration tank of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the wastewater evaporation mechanism of the present invention;

[0025] Figure 5 This invention Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 6 It is a structural schematic diagram of the return slide rail of the present invention;

[0027] Figure 7 This invention Figure 6 A schematic diagram of the partially enlarged structure at point B in the middle;

[0028] Figure 8 This is a schematic diagram of the internal structure of the annular support shell of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the dual-purpose mechanism of the present invention;

[0030] Figure 10 This invention Figure 9 Schematic diagram of the partially enlarged structure at point C in the middle.

[0031] Figure: 1, concentration tank; 2, liquid inlet; 3, telescopic rod; 4, breathable plate; 5, air inlet; 6, motor; 7, collection pipe; 8, air outlet; 9, rotating ring; 10, spray pipe; 11, liquid level adjustment plate; 12, mounting plate; 13, water inlet pipe; 14, annular support shell; 15, fixing frame; 16, collection branch pipe; 17, ratchet assembly; 18, valve; 19, bracket ring; 20, first shaft; 21, annular intercepting ring; 22, annular rack; 23, second shaft; 2 4. First gear; 25. First chain; 26. Second rack; 27. Ratchet; 28. Return slide; 29. ​​First gear block group; 30. Slider; 31. Third gear; 32. One-way bearing; 33. Connecting rod 1; 34. Fourth shaft; 35. First cleaning plate; 36. Locking block; 37. Dual-purpose plate; 38. Spring; 39. Semi-permeable plate; 40. Locking hole; 101. Wastewater evaporation mechanism; 202. Mixing mechanism; 303. Salt cleaning mechanism; 404. Dual-purpose mechanism. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] Reference Figures 1-10 A wastewater treatment multi-effect evaporator includes a concentration tank body 1, a top outer wall of the concentration tank body 1 is fixedly connected to a breathable plate 4, an inner wall of the breathable plate 4 is fixedly connected to two telescopic rods 3, one end of the two telescopic rods 3 is fixedly connected to the same liquid level adjustment plate 11, a mounting plate 12 is provided below the liquid level adjustment plate 11, the mounting plate 12 is fixedly connected to the concentration tank body 1, the outer wall of the concentration tank body 1 is fixedly connected to a motor 6, the output shaft of the motor 6 is fixedly connected to a first shaft 20, the first shaft 20 is rotatably connected to the concentration tank body 1, and further includes:

[0035] The wastewater evaporation mechanism 101 is used to intercept and evaporate wastewater. The wastewater evaporation mechanism 101 is installed on the mounting plate 12;

[0036] The salt cleaning mechanism 303 is used to partially scrape and collect the crystallized salt particles inside the wastewater evaporation mechanism 101 when the motor 6 rotates clockwise. The salt cleaning mechanism 303 is installed on the wastewater evaporation mechanism 101;

[0037] The dual-purpose mechanism 404 is used to stir the high-salt wastewater on the inner wall of the wastewater evaporation mechanism 101 when the motor 6 rotates counterclockwise, so that it is heated evenly and thus the evaporation efficiency is improved. It can also be used to scrape and collect crystallized salt particles inside the wastewater evaporation mechanism 101 when the motor 6 rotates clockwise and the salt cleaning mechanism 303 is locked. The dual-purpose mechanism 404 is installed on the wastewater evaporation mechanism 101;

[0038] And the stirring mechanism 202 is used to drive the dual-purpose mechanism 404 when the motor 6 rotates counterclockwise. The stirring mechanism 202 is installed on the wastewater evaporation mechanism 101.

[0039] Among them, the outer wall of the concentration tank body 1 is connected to the air inlet 5, the outer wall of the concentration tank body 1 on the side away from the air inlet 5 is connected to the liquid inlet 2, and an air outlet 8 is provided below the liquid inlet 2. The air outlet 8 is connected to the concentration tank body 1, and the inner wall of the concentration tank body 1 is rotatably connected to a rotating ring 9.

[0040] Among them, the wastewater evaporation mechanism 101 includes an inlet pipe 13, an annular support shell 14, a collecting branch pipe 16, a valve 18, an annular intercepting ring 21 and an annular rack 22. The inlet pipe 13 is fixedly connected to the mounting plate 12, the annular intercepting ring 21 is connected to the water inlet pipe 13, the collecting branch pipe 16 is connected to the annular intercepting ring 21, the valve 18 is fixedly connected to the collecting branch pipe 16, the annular support shell 14 is slidably connected to the annular intercepting ring 21, and the annular rack 22 is fixedly connected to the annular intercepting ring 21.

[0041] In this embodiment, when in use, the external wastewater pipe is connected to the liquid inlet 2, so that the wastewater remains in the space between the liquid level adjustment plate 11 and the concentration tank body 1, and the telescopic rod 3 contracts to drive the liquid level adjustment plate 11 to move upward, so that the wastewater is immersed in the water inlet pipe 13, thereby filling the pipe composed of the annular support shell 14 and the annular intercepting ring 21, and then the telescopic rod 3 is moved downward, so that the water inside the annular support shell 14 and the annular intercepting ring 21 is constant to facilitate subsequent evaporation.

[0042] The dual-purpose mechanism 404 includes a second shaft 23 , a dual-purpose plate 37 and a semi-permeable plate 39 . The second shaft 23 is rotatably connected to the annular intercepting ring 21 , the semi-permeable plate 39 is fixedly connected to the annular intercepting ring 21 , and the dual-purpose plate 37 is fixedly connected to the second shaft 23 .

[0043] Among them, two evenly distributed locking blocks 36 are slidably connected to the inner wall of the semi-permeable plate 39, and springs 38 are fixedly connected between the two locking blocks 36 and the semi-permeable plate 39. Two evenly distributed locking holes 40 are opened on the bottom outer wall of the dual-purpose plate 37.

[0044] Among them, the stirring mechanism 202 includes a first gear 24, a ratchet 27, a pawl assembly 17 and a second rack 26, the second rack 26 is engaged with the annular intercepting ring 21, the pawl assembly 17 is fixedly connected to the second rack 26, the second rack 26 is rotatably connected to the ratchet 27 through a set shaft, the ratchet 27 is rotatably connected to the annular intercepting ring 21 through a set shaft, the pawl assembly 17 is engaged with the inner wall of the ratchet 27, the first gear 24 is fixedly connected to the outer wall of the second shaft 23, and the outer walls of the first gear 24 and the ratchet 27 are sleeved with the same first chain 25.

[0045] In this embodiment, the external evaporator delivers high-temperature steam to the air inlet 5. The high-temperature steam puts the annular support shell 14 and the annular intercepting ring 21 in a high-temperature environment, so that the wastewater is heated and evaporated in the annular support shell 14 and the annular intercepting ring 21. The motor 6 starts to Figure 3 The wastewater inside the annular support shell 14 and the annular intercepting ring 21 is shaken by slowly rotating counterclockwise in the direction shown, and the annular intercepting ring 21 is engaged with the second rack 26. The second rack 26 drives the ratchet 27 to rotate through the pawl assembly 17, and the ratchet 27 drives the second shaft 23 to rotate through the first chain 25 and the first gear 24, so that the dual-purpose plate 37 can evenly stir the wastewater inside, thereby promoting uniform heating thereof.

[0046] Among them, the salt cleaning mechanism 303 includes a bracket ring 19, a circular slide rail 28, a first gear block group 29, a slider 30, a third gear 31, a one-way bearing 32, a connecting rod 33, a fourth shaft rod 34 and a first cleaning plate 35. The bracket ring 19 is fixedly connected to the collecting branch pipe 16. A circular slide rail 28 is provided on the outer wall of the bracket ring 19. The bracket ring 19 is slidingly connected to the slider 30 through the circular slide rail 28. One end of the slider 30 is rotatably connected to the third gear 31. The outer wall of the third gear 31 is engaged with the first gear block group 29. The first gear block group 29 is fixedly connected to the bracket ring 19. The one-way bearing 32 is fixedly connected to the third gear 31. The connecting rod 33 is rotatably connected to the one-way bearing 32. The fourth shaft rod 34 is fixedly connected to the connecting rod 33. The first cleaning plate 35 is fixedly connected to the fourth shaft rod 34. The fourth shaft rod 34 is slidably connected to the annular support shell 14.

[0047] In this embodiment, since the one-way bearing 32 and the third gear 31 rotate in one direction, the slider 30 slides along the return slide rail 28 away from the outer ring track of the annular intercepting ring 21, so that the dual-purpose plate 37 passes through the middle of the wastewater, causing them to collide with each other, further promoting uniform heating. When the evaporation is completed, the first cleaning plate 35 is about to contact the dual-purpose plate 37. At this time, the gap of the annular intercepting ring 21 is on the side of the second rack 26, so the dual-purpose plate 37 will not rotate. When the first cleaning plate 35 gradually approaches the dual-purpose plate 37, the dual-purpose plate 37 and the semi-permeable plate 39 are parallel, and the locking block 36 is stuck in the locking hole 40. The dual-purpose plate 37 and the locking block 36 form a complete plate, and then the valve 18 is opened to discharge the concentrate.

[0048] Among them, there are several wastewater evaporation mechanisms 101, the inner wall of each annular support shell 14 is fixedly connected to a fixing frame 15, each fixing frame 15 is fixedly connected to the first shaft 20, the inner wall of each annular support shell 14 is connected to the same spray pipe 10, the outer wall of the spray pipe 10 is fixedly connected to the rotating ring 9, the outer wall of each collecting branch pipe 16 is connected to the same collecting pipe 7, and the outer wall of the collecting pipe 7 is fixedly connected to the concentration tank body 1.

[0049] In this embodiment, the motor 6 rotates clockwise, and the slider 30 slides along the spring 38 near the inner ring of the annular intercepting ring 21, so that the first cleaning plate 35 contacts the inner wall of the annular intercepting ring 21. When the motor 6 drives the annular support shell 14 to rotate through the first shaft 20 and the fixing frame 15, the dual-purpose plate 37 and the semi-permeable plate 39 can clean the crystallized salt on the inner wall of the annular support shell 14, thereby avoiding blockage caused by the crystallized salt on the inner wall of the annular support shell 14 and the annular intercepting ring 21. When the first cleaning plate 35 approaches the dual-purpose plate 37 again, all the crystallized salt is between the first cleaning plate 35, the dual-purpose plate 37 and the semi-permeable plate 39. When the slider 30 slides to the end of the return slide rail 28 and moves upward, the first cleaning plate 35 rubs off the salt particles between the dual-purpose plate 37 and the semi-permeable plate 39 to avoid adhesion. At this time, the spray pipe 10 is opened to flush it away.

[0050] The specific working principle and usage of the present invention are explained in detail below: When in use, the external wastewater pipe is connected to the liquid inlet 2, so that the wastewater remains in the space between the liquid level adjustment plate 11 and the concentration tank body 1. The telescopic rod 3 contracts and drives the liquid level adjustment plate 11 to move upward, so that the wastewater is immersed in the water inlet pipe 13, thereby filling the pipeline composed of the annular support shell 14 and the annular intercepting ring 21. Then the telescopic rod 3 moves downward, so that the water inside the annular support shell 14 and the annular intercepting ring 21 is constant to facilitate subsequent evaporation.

[0051] The external evaporator delivers high temperature steam to the air inlet 5. The high temperature steam puts the annular support shell 14 and the annular interception ring 21 in a high temperature environment, so that the waste water is heated and evaporated in the annular support shell 14 and the annular interception ring 21. The motor 6 starts to Figure 3 The wastewater inside the annular support shell 14 and the annular intercepting ring 21 is shaken by slowly rotating counterclockwise in the direction shown, and the annular intercepting ring 21 is engaged with the second rack 26. The second rack 26 drives the ratchet 27 to rotate through the pawl assembly 17, and the ratchet 27 drives the second shaft 23 to rotate through the first chain 25 and the first gear 24, so that the dual-purpose plate 37 can evenly stir the wastewater inside, thereby promoting uniform heating thereof.

[0052] At this time, since the one-way bearing 32 and the third gear 31 rotate in one direction, the slider 30 slides along the return slide rail 28 away from the outer ring track of the annular intercepting ring 21, so that the dual-purpose plate 37 passes through the middle of the wastewater, causing them to collide with each other, further promoting uniform heating. When the evaporation is completed, the first cleaning plate 35 is about to contact the dual-purpose plate 37. At this time, the gap of the annular intercepting ring 21 is on the side of the second rack 26, so the dual-purpose plate 37 will not rotate. When the first cleaning plate 35 gradually approaches the dual-purpose plate 37, the dual-purpose plate 37 and the semi-permeable plate 39 are parallel to the locking block 36 and the locking hole 40 are inserted. The dual-purpose plate 37 and the locking block 36 form a complete plate, and then the valve 18 is opened to discharge the concentrate.

[0053] The motor 6 rotates clockwise, and at this time the slider 30 slides along the spring 38 near the inner ring of the annular intercepting ring 21, so that the first cleaning plate 35 comes into contact with the inner wall of the annular intercepting ring 21. When the motor 6 drives the annular support shell 14 to rotate through the first shaft 20 and the fixing frame 15, the dual-purpose plate 37 and the semi-permeable plate 39 can clean the crystallized salt on the inner wall of the annular support shell 14, thereby avoiding blockage caused by the crystallized salt on the inner wall of the annular support shell 14 and the annular intercepting ring 21. When the first cleaning plate 35 approaches the dual-purpose plate 37 again, all the crystallized salt is between the first cleaning plate 35, the dual-purpose plate 37 and the semi-permeable plate 39. When the slider 30 slides to the end of the return slide rail 28 and moves upward, the first cleaning plate 35 rubs off the salt particles between the dual-purpose plate 37 and the semi-permeable plate 39 to avoid adhesion. At this time, the spray pipe 10 is opened to flush it away.

[0054] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece forming and other conventional means well known to those skilled in the art.

[0055] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A wastewater treatment multi-effect evaporator, comprising a concentration tank body (1), wherein the top outer wall of the concentration tank body (1) is fixedly connected to a breathable plate (4), the inner wall of the breathable plate (4) is fixedly connected to two telescopic rods (3), one end of the two telescopic rods (3) is fixedly connected to the same liquid level adjustment plate (11), a mounting plate (12) is provided below the liquid level adjustment plate (11), the mounting plate (12) is fixedly connected to the concentration tank body (1), the outer wall of the concentration tank body (1) is fixedly connected to a motor (6), the output shaft of the motor (6) is fixedly connected to a first shaft (20), and the first shaft (20) is rotatably connected to the concentration tank body (1), characterized in that Also includes: A wastewater evaporation mechanism (101) is used to intercept and evaporate wastewater, and the wastewater evaporation mechanism (101) is installed on the mounting plate (12); The salt cleaning mechanism (303) is used to partially scrape and collect crystallized salt particles inside the wastewater evaporation mechanism (101) when the motor (6) rotates clockwise. The salt cleaning mechanism (303) is installed on the wastewater evaporation mechanism (101); The dual-purpose mechanism (404) is used to stir the high-salt wastewater on the inner wall of the wastewater evaporation mechanism (101) when the motor (6) rotates counterclockwise, so that the wastewater is heated evenly and the evaporation efficiency is improved. The dual-purpose mechanism (404) is also used to scrape and collect crystallized salt particles inside the wastewater evaporation mechanism (101) after the motor (6) rotates clockwise and is locked in conjunction with the salt cleaning mechanism (303). The dual-purpose mechanism (404) is installed on the wastewater evaporation mechanism (101); and a stirring mechanism (202) for driving the dual-purpose mechanism (404) when the motor (6) rotates counterclockwise. The stirring mechanism (202) is installed on the wastewater evaporation mechanism (101).

2. A wastewater treatment multiple-effect evaporator according to claim 1, characterized in that: The outer wall of the concentration tank body (1) is connected to an air inlet (5), the outer wall of the concentration tank body (1) on a side away from the air inlet (5) is connected to a liquid inlet (2), an air outlet (8) is provided below the liquid inlet (2), the air outlet (8) is connected to the concentration tank body (1), and the inner wall of the concentration tank body (1) is rotatably connected to a rotating ring (9).

3. A wastewater treatment multiple-effect evaporator according to claim 2, characterized in that: The wastewater evaporation mechanism (101) comprises a water inlet pipe (13), an annular support shell (14), a collecting branch pipe (16), a valve (18), an annular intercepting ring (21) and an annular rack (22); the water inlet pipe (13) is fixedly connected to the mounting plate (12); the annular intercepting ring (21) is communicated with the water inlet pipe (13); the collecting branch pipe (16) is communicated with the annular intercepting ring (21); the valve (18) is fixedly connected to the collecting branch pipe (16); the annular support shell (14) is slidably connected to the annular intercepting ring (21); and the annular rack (22) is fixedly connected to the annular intercepting ring (21).

4. A wastewater treatment multiple-effect evaporator according to claim 3, characterized in that: The salt cleaning mechanism (303) includes a support ring (19), a return slide rail (28), a first gear block group (29), a slider (30), a third gear (31), a one-way bearing (32), a connecting rod (33), a fourth shaft (34) and a first cleaning plate (35). The support ring (19) is fixedly connected to the collecting branch pipe (16). The outer wall of the support ring (19) is provided with a return slide rail (28). The support ring (19) is slidably connected to the slider (30) through the return slide rail (28). One end of the slider (30) rotates A third gear (31) is connected, the outer wall of the third gear (31) is meshed with a first tooth block group (29), the first tooth block group (29) is fixedly connected to the bracket ring (19), the one-way bearing (32) is fixedly connected to the third gear (31), the connecting rod (33) is rotatably connected to the one-way bearing (32), the fourth shaft (34) is fixedly connected to the connecting rod (33), the first cleaning plate (35) is fixedly connected to the fourth shaft (34), and the fourth shaft (34) is slidably connected to the annular support shell (14).

5. A wastewater treatment multiple-effect evaporator according to claim 4, characterized in that: The dual-purpose mechanism (404) comprises a second shaft (23), a dual-purpose plate (37) and a semi-permeable plate (39); the second shaft (23) is rotatably connected to the annular intercepting ring (21); the semi-permeable plate (39) is fixedly connected to the annular intercepting ring (21); and the dual-purpose plate (37) is fixedly connected to the second shaft (23).

6. A wastewater treatment multiple-effect evaporator according to claim 5, characterized in that: The inner wall of the semi-permeable plate (39) is slidably connected to two evenly distributed locking blocks (36), and a spring (38) is fixedly connected between the two locking blocks (36) and the semi-permeable plate (39). The bottom outer wall of the dual-purpose plate (37) is provided with two evenly distributed locking holes (40).

7. A wastewater treatment multiple-effect evaporator according to claim 6, characterized in that: The stirring mechanism (202) comprises a first gear (24), a ratchet (27), a pawl assembly (17) and a second rack (26); the second rack (26) is engaged with the annular intercepting ring (21); the pawl assembly (17) is fixedly connected to the second rack (26); the second rack (26) is rotationally connected to the ratchet (27) via a set shaft; the ratchet (27) is rotationally connected to the annular intercepting ring (21) via a set shaft; the pawl assembly (17) is engaged with the inner wall of the ratchet (27); the first gear (24) is fixedly connected to the outer wall of the second shaft (23); and the outer walls of the first gear (24) and the ratchet (27) are sleeved with the same first chain (25).

8. The multiple-effect evaporator for wastewater treatment according to claim 7, characterized in that: The wastewater evaporation mechanism (101) is provided with a plurality of them, the inner wall of each annular support shell (14) is fixedly connected to a fixing frame (15), each fixing frame (15) is fixedly connected to the first shaft (20), the inner wall of each annular support shell (14) is connected to the same spray pipe (10), the outer wall of the spray pipe (10) is fixedly connected to the rotating ring (9), the outer wall of each collecting branch pipe (16) is connected to the same collecting pipe (7), and the outer wall of the collecting pipe (7) is fixedly connected to the concentration tank body (1).

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