A multi-stage water treatment and purification device

Abstract

The application relates to the field of sewage purification, and discloses a multistage water treatment and purification device which comprises an inclined plate sedimentation tank, a support frame for supporting inclined plates is arranged in the inclined plate sedimentation tank, the support frame comprises a variable-pitch shaft which is horizontally arranged and rotationally arranged in the inclined plate sedimentation tank; a guide rail which is horizontally arranged and parallel to the variable-pitch shaft; a moving block, a rail groove which is slidably connected with the guide rail is arranged on the moving block, a limiting column which is inserted into a variable-pitch groove in the surface of the variable-pitch shaft is arranged on the moving block; an insertion column which is vertically fixed on the moving block; an insertion hole which is matched with the insertion column is arranged on the inclined plate, the adjacent two inclined plates after the convergence of the plurality of moving blocks abut against each other; and a driving motor for driving the variable-pitch shaft to rotate is arranged on the inclined plate sedimentation tank. The application realizes the abutment and collision of the adjacent two inclined plates, the collision can remove the dirt on the inclined plates without taking down the inclined plates, the dirt on the inclined plates is removed, the sludge is easily deposited on the inclined plates, and the purification effect of the inclined plate sedimentation tank is ensured.

Description

Technical Field

[0001] This application relates to the field of wastewater purification, and more particularly to a multi-stage water treatment and purification device. Background Technology

[0002] For urban wastewater treatment, due to the smaller urban population and lower water standards, the scale of wastewater treatment is relatively small. Therefore, small-scale multi-stage treatment and purification devices are generally used. After entering the multi-stage treatment and purification device, the wastewater first reaches the filter screen tank to remove fixed debris and other pollutants. Then it flows into the equalization tank, where perforated aerators are installed to pre-treat some pollutants. The water is then pumped to the membrane bioreactor, and then flows into the inclined plate sedimentation tank for sludge-water separation. Because the water passes through the membrane bioreactor, the sludge concentration and activity in the water are increased, making it easier for the sludge to settle on the inclined plates in the sedimentation tank. After that, the water enters the deep filtration tank, where it undergoes deep filtration through sand and carbon filtration to meet discharge requirements.

[0003] However, during the implementation of the relevant technical solutions, at least the following technical problems were found: When water containing sludge flows upward in the inclined plate sedimentation tank, the sludge will continuously fall onto the inclined plate. When there is enough sludge on the inclined plate, the sludge will slide down the inclined plate to the sludge collection area of ​​the sedimentation tank under the action of gravity. The sludge will accumulate on the inclined plate repeatedly over a long period of time, and the dirt that forms on the inclined plate will affect the sludge falling, thereby affecting the purification standard of the entire multi-stage treatment and purification device. Summary of the Invention

[0004] This application provides a multi-stage water treatment and purification device that solves the technical problem in the prior art where dirt on the inclined plates affects the settling of sludge and thus the purification standard of the entire multi-stage treatment and purification device. It achieves the collision between two adjacent inclined plates without removing the plates. The collision removes dirt from the inclined plates, which facilitates the settling of sludge on the inclined plates and ensures the purification effect of the inclined plate sedimentation tank.

[0005] This application provides a multi-stage water treatment and purification device, including an inclined plate sedimentation tank. A support frame for supporting the inclined plates is provided within the sedimentation tank. The support frame includes: a variable-pitch shaft, horizontally and rotatably positioned within the sedimentation tank; a guide rail, horizontally positioned and parallel to the variable-pitch shaft; a movable block, having a groove slidably connected to the guide rail, and a limiting post inserted into the variable-pitch groove on the surface of the variable-pitch shaft; several movable blocks equally spaced on the variable-pitch shaft; and a vertically fixed insertion post. The inclined plates have insertion holes that mate with the insertion posts. The inclined plates, with the insertion posts inserted into the insertion holes, are in an inclined state. Adjacent inclined plates of the several movable blocks abut against each other when they are closed. A drive motor for driving the variable-pitch shaft to rotate is provided on the sedimentation tank.

[0006] Furthermore, the support frame also includes: a lower inclined block, fixed to one side wall of the movable block, the inclined surface of the lower inclined block being inclined upward and facing the inclined plate; wherein, an upper inclined block is fixed on the bottom surface of the inclined plate, the inclined surface of the upper inclined block being inclined downward and facing the movable block, the lower inclined blocks on each movable block are located on the same side of the movable block, and the upper inclined block on the bottom surface of the inclined plate and the lower inclined block on the movable block are respectively located on both sides of the movable block, the inclined surface of the upper inclined block is used to contact the inclined surface of the lower inclined block on the adjacent inclined plate, the lower inclined blocks on each movable block are of the same height, the upper inclined blocks on each inclined plate are of different heights, and there is a clearance fit between the insertion hole on the inclined plate and the insertion post on the movable block.

[0007] Furthermore, the purification device also includes: a filter screen, into which wastewater first enters, and which is used to remove fixed impurities from the water; an equalization tank, which receives the water filtered by the filter screen, and is equipped with perforated aerators for pre-treating some pollutants; a membrane bioreactor, which receives the water filtered by the equalization tank, and is used to increase the sludge concentration and activity in the water, and the water filtered by the membrane bioreactor enters an inclined plate sedimentation tank; and a depth filtration tank, which receives the water filtered by the inclined plate sedimentation tank, and is used for sand filtration and carbon filtration.

[0008] Furthermore, a number of protrusions are formed on the side of the inclined plate that is not where the sludge falls, and the protrusions are arranged at equal intervals on the inclined plate.

[0009] Furthermore, a number of protrusions are formed on the side of the inclined plate that is not where the sludge falls, and the protrusions are arranged at equal intervals on the inclined plate.

[0010] Furthermore, the movable block is provided with a groove covering the pitch shaft.

[0011] Furthermore, the groove is provided on both sides of the groove, and the guide rail is provided in both grooves.

[0012] Furthermore, the support frame is provided in two sets, and is located at both ends of the inclined plate. Both ends of the inclined plate are provided with the insertion hole, which is used to cooperate with the insertion post on the support frame on both sides.

[0013] Furthermore, the thickness of the moving block is less than the thickness of the inclined plate.

[0014] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0015] Because of the use of a variable-pitch shaft, adjacent inclined plates can abut against each other, and under the action of the upper and lower inclined blocks, friction can be generated between adjacent inclined plates, thereby more effectively removing dirt from the inclined plates. The entire process of cleaning the dirt from the inclined plates does not require removing the inclined plate sedimentation tank, which greatly facilitates the cleaning of dirt from numerous inclined plates and solves the technical problem in the existing technology that dirt on the inclined plates affects the settling of sludge and affects the purification standard of the entire multi-stage treatment and purification device. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of a multi-stage water treatment and purification device in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the inclined plate sedimentation tank in the embodiments of this application;

[0018] Figure 3 for Figure 2 The cross-sectional schematic diagram mainly illustrates the hierarchical structure inside the inclined plate sedimentation tank;

[0019] Figure 4 for Figure 3 A schematic diagram of the middle section, mainly illustrating the overall structure of the support frame;

[0020] Figure 5 Main illustration Figure 4 Construction of the variable pitch shaft;

[0021] Figure 6 for Figure 4 A schematic diagram of the middle section mainly illustrates the connection structure between the inclined plate deterioration support frame;

[0022] Figure 7 This diagram mainly illustrates the effect of the moving blocks closing together.

[0023] Figure 8 The main illustration shows the protrusions on the inclined plate;

[0024] In the diagram: 1. Filter screen tank; 2. Equalization tank; 3. Membrane bioreactor tank; 4. Inclined plate sedimentation tank; 401. Water distribution channel; 402. Triangular sludge collection trough; 403. Sludge discharge pipe; 404. Water distribution hole; 405. Serrated water trough; 41. Inclined plate; 411. Insertion hole; 412. Upper inclined block; 4121. Connecting plate; 413. Protrusion; 42. Support frame; 421. Variable pitch shaft; 4211. Variable pitch groove; 422. Guide rail; 423. Moving block; 4231. Rail groove; 4232. Limiting column; 4233. Groove; 424. Insertion column; 425. Lower inclined block; 43. Drive motor; 5. Depth filtration tank. Detailed Implementation

[0025] This application discloses a multi-stage water treatment and purification device. The wastewater to be treated is first fed into a filter screen tank 1, where the screen removes fixed impurities. The water is then fed into an equalization tank 2 to remove some pollutants, followed by a membrane bioreactor 3 to increase the sludge concentration and activity. Next, the water is fed into an inclined plate sedimentation tank 4 for sludge-water separation. Finally, the purified water is fed into a deep filtration tank 5, where sand and carbon filtration processes are performed to meet discharge requirements. In the inclined plate sedimentation tank 4, the inclined plates 41 continuously accumulate sludge over a long period, resulting in... When the dirt that forms needs to be cleaned, the drive motor 43 is started, causing the moving blocks 423 to move closer together at equal intervals. As the moving blocks 423 continue to move closer together, the inclined plate 41 moves upward under the action of the upper inclined block 412 and the lower inclined block 425. Friction is generated during the movement, which removes the dirt on the inclined plate 41. During the entire dirt cleaning process of the inclined plate 41, the inclined plate 41 does not need to be removed from the inclined plate sedimentation tank 4, thus ensuring the purification effect of the inclined plate sedimentation tank 4. This solves the technical problem in the prior art that the dirt on the inclined plate 41 affects the sludge settling and affects the purification standard of the entire multi-stage treatment purification device.

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1A multi-stage water treatment and purification device includes a filter screen tank 1, an equalization tank 2, a membrane bioreactor tank 3, an inclined plate sedimentation tank 4, and a deep filtration tank 5. The wastewater to be treated is first fed into a filter screen tank 1, where the screen removes fixed impurities from the water. Then, the water is fed into an equalization tank 2, which is equipped with perforated aerators to pre-treat some pollutants. Next, the water is fed into a membrane bioreactor 3, where the MBBR biological packing material provides a good carrier for sludge, increasing both sludge concentration and activity. Microporous aerators are also installed at the bottom of the membrane bioreactor 3 to provide oxygen to the wastewater, removing pollutants and also agitating the biological packing material. The water treated by the MBBR membrane bioreactor enters an inclined plate sedimentation tank 4, where sludge and water are separated. Finally, the clear water is fed into a deep filtration tank 5, where sand and carbon filtration ensures the water meets discharge requirements.

[0028] Reference Figure 2 and Figure 3 A water distribution channel 401 can be set on one side of the inclined plate sedimentation tank 4, and the water treated from the membrane bioreactor 3 can first be introduced into the water distribution channel 401. A triangular sludge collection trough 402 is set at the bottom of the inclined plate sedimentation tank 4, and a sludge discharge pipe 403 is set in the triangular sludge collection trough 402 for sludge discharge. Above the triangular sludge collection trough 402 is a water distribution area, and a water distribution hole 404 connected to the water distribution channel 401 is opened in the water distribution area. A support frame 42 is set above the water distribution hole 404, and several inclined plates 41 are arranged and supported on the support frame 42. Above the inclined plates 41 is a clear water area, and a sawtooth water trough 405 is set in the clear water area. Clear water will overflow into the sawtooth water trough 405, and the sawtooth water trough 405 is connected to the deep filtration tank 5.

[0029] Water entering the inclined plate sedimentation tank 4 from the water distribution channel 401 flows upward. Heavier sludge sinks into the triangular sludge collection trough 402 under gravity. The upward-flowing water first comes into contact with the downward-sloping side of the inclined plate 41. Then, the water changes direction due to the resistance of the inclined plate 41 and flows towards the adjacent inclined plate 41. Next, the water flows upward along the upward-sloping side of the adjacent inclined plate 41. During the flow, sludge in the water falls onto the inclined plate 41. As more and more sludge falls, its weight increases, and eventually it slides off the inclined plate 41 and into the triangular sludge collection trough 402.

[0030] Reference Figure 4 , Figure 5 , Figure 6As shown, two sets of support frames 42 are provided, located on both sides of the inclined plate sedimentation tank 4, respectively, and each set of support frames 42 can support both ends of the inclined plate 41. The support frame 42 includes a variable pitch shaft 421, guide rails 422, a moving block 423, a column 424, and a lower inclined block 425. The variable pitch shaft 421 is a round rod, with variable pitch grooves 4211 symmetrically formed on both sides of its center. The variable pitch shaft 421 is horizontally positioned, and its length direction is consistent with the arrangement direction of the inclined plates 41. Both ends of the variable pitch shaft 421 are rotatably connected to the inner walls of both sides of the inclined plate sedimentation tank 4. Two guide rails 422 are provided, located on both sides of the variable pitch shaft 421, parallel to the variable pitch shaft 421, and both ends of the guide rails 422 are fixed to the inner walls of both sides of the inclined plate sedimentation tank 4. The movable block 423 is located on the pitch shaft 421. A groove 4233 is provided in the middle of the movable block 423. The pitch shaft 421 is located in the groove 4233. A limit post 4232 is fixed in the groove 4233. The limit post 4232 is a short post and is inserted into the pitch groove 4211 of the pitch shaft 421. The movable block 423 is provided with rail grooves 4231 on both sides of the groove 4233. The rail grooves 4231 are slidably connected to the guide rails 422. The rail grooves 4231 on both sides are slidably connected to the guide rails 422 on both sides of the pitch shaft 421. Thus, the movable block 423 can move horizontally on the guide rails 422. Since the pitch grooves 4211 are symmetrically provided on both sides of the center of the pitch shaft 421, the movable blocks 423 on both sides of the pitch shaft 421 will move towards or away from the center of the pitch shaft 421 at the same time. In addition, a drive motor 43 is installed on the outer wall of the inclined plate sedimentation tank 4. The output shaft of the drive motor 43 passes through the outer wall of the inclined plate sedimentation tank 4 and is coaxially connected to the variable pitch shaft 421. The drive motor 43 can drive the variable pitch shaft 421 to rotate.

[0031] Continue to refer to Figure 6 Each movable block 423 has two fixed insertion posts 424, located at both ends of the movable block 423. The cross-section of each insertion post 424 is rectangular. An insertion hole 411 is provided on the inclined plate 41. One end of the insertion hole 411 is connected to the upward-sloping side of the inclined plate 41, and the other end is connected to the bottom surface of the inclined plate 41. The insertion post 424 and the insertion hole 411 are fitted with a clearance, allowing the inclined plate 41 to move up and down on the insertion post 424. When the inclined plate 41 is inserted into the insertion post 424 on the movable block 423, the inclined plate 41 will tilt. With both ends of the inclined plate 41 inserted into the insertion posts 424 on the two side support frames 42, the inclined plate 41 can be placed stably.

[0032] Since the limiting post 4232 on the moving block 423 is inserted into the pitch groove 4211 of the pitch shaft 421, the movement of the moving block 423 is restricted by the pitch shaft 421, and the moving block 423 is also restricted by the guide rail 422. Therefore, when the drive motor 43 drives the pitch shaft 421 to rotate, each moving block 423 will move closer or further away at equal intervals. Since the pitch groove 4211 is symmetrically opened on both sides of the center of the pitch shaft 421, the moving blocks 423 on both sides of the pitch shaft 421 will move closer to the center of the pitch shaft 421 at the same time. When it is necessary to move each moving block 423 away, the pitch shaft 421 is rotated in the opposite direction, which can restore each inclined plate 41 to its initial position, so that each inclined plate 41 is distributed at equal intervals.

[0033] When two adjacent moving blocks 423 are moving closer to each other, the adjacent inclined plates 41 are also moving closer to each other. After the two adjacent inclined plates 41 come into contact, they will collide. The collision will knock off the dirt on the inclined plates 41, thereby cleaning the dirt on the inclined plates 41. Therefore, if the inclined plates 41 are removed one by one, it will take a lot of time and manpower for a large number of inclined plates 41 in the inclined plate sedimentation tank 4. However, in this application, the dirt on the inclined plates 41 can be cleaned without removing the inclined plates 41, saving a lot of costs.

[0034] Continue to refer to Figure 6 and Figure 7As shown, the thickness of the movable block 423 is less than the thickness of the inclined plate 41. This allows the two adjacent movable blocks 423 to close together without obstructing the contact of the inclined plate 41. It also ensures that even after the two inclined plates 41 contact, there is still a gap between the two adjacent movable blocks 423 for movement, allowing them to move further together. The lower inclined block 425 is fixed to one side wall of the movable block 423. The lower inclined block 425 is strip-shaped, with its length aligned with the length of the inclined plate 41. The cross-section of the lower inclined block 425 is a right-angled triangle, and its inclined surface faces upwards towards the inclined plate 41. Each movable block 423 has a lower inclined block 425 fixed to it, and all lower inclined blocks 425 on each movable block 423 are located on the same side of the movable block 423. An upper inclined block 412 is fixed on the bottom surface of the inclined plate 41. The upper inclined block 412 is strip-shaped and its length direction is consistent with the length direction of the inclined plate 41. The cross-section of the upper inclined block 412 is a right triangle. The upper inclined block 412 and the bottom surface of the inclined plate 41 are connected by a connecting plate 4121. Each inclined plate 41 has an upper inclined block 412 fixed on it, but the height of the connecting plate 4121 on each inclined plate 41 is different, which makes the height of the upper inclined plate 41 different. The inclined surface of the upper inclined block 412 is inclined downward and faces the moving block 423. The upper inclined block 412 of each inclined plate 41 is located on the same side of the moving block 423. The upper inclined block 412 on the bottom surface of the inclined plate 41 and the lower inclined block 425 on the moving block 423 are located on both sides of the moving block 423, respectively. The inclined surface of the upper inclined block 412 is used to contact the inclined surface of the lower inclined block 425 on the adjacent inclined plate 41.

[0035] Since the thickness of the moving block 423 is less than the thickness of the inclined plate 41, there is still a gap between two adjacent moving blocks 423 for the moving blocks 423 to move. Then, the moving blocks 423 continue to move closer to each other. Then, the upper inclined block 412 will come into contact with the lower inclined block 425. The lower inclined block 425 will push the upper inclined block 412 to move upward. At this time, since the insertion hole 411 on the inclined plate 41 and the insertion post 424 on the moving block 423 are in clearance fit, the inclined plate 41 will also move upward. Friction will be generated during the movement, which can more effectively remove dirt from the inclined plate 41 and further improve the dirt removal effect.

[0036] In addition, refer to Figure 8 As shown, a number of protrusions 413 are formed on the side of the inclined plate 41 that does not receive sludge. If the protrusions 413 are arranged at equal intervals on the inclined plate 41, the protrusions 413 can accelerate the removal of dirt on the inclined plate 41 during the process of two adjacent inclined plates 41 rubbing against each other, thus improving the dirt removal effect.

[0037] The functional principle of this application can be explained through the following methods:

[0038] Water entering the inclined plate sedimentation tank 4 from the water distribution channel 401 will flow upward. The water will flow upward along the inclined plate 41. During the flow, the sludge in the water will fall onto the inclined plate 41. As more and more sludge falls, its weight will become heavier and heavier. Eventually, it will slide off the inclined plate 41 and into the triangular sludge collection trough 402.

[0039] As sludge accumulates repeatedly on the inclined plate 41 over a long period, dirt forms on it. When cleaning is needed, the drive motor 43 is activated, causing the variable pitch shaft 421 to rotate. This causes the moving blocks 423 to approach each other at equal intervals. As adjacent moving blocks 423 approach each other, adjacent inclined plates 41 also approach each other. Then, the adjacent inclined plates 41 come into contact with each other. The variable pitch shaft 421 continues to rotate, allowing the moving blocks 423 to continue to approach each other. Then, under the action of the upper inclined block 412 and the lower inclined block 425, the lower inclined block 425 pushes the upper inclined block 412 upwards, and the inclined plates 41 also move upwards. Friction is generated during this movement, thus removing the dirt from the inclined plates 41. After the dirt is removed, the variable pitch shaft 421 is rotated in the opposite direction, allowing each inclined plate 41 to return to its initial position, with each inclined plate 41 evenly spaced.

[0040] Therefore, the entire process of cleaning the dirt on the inclined plate 41 does not require removing the inclined plate sedimentation tank 4. If the large number of inclined plates 41 present in the inclined plate sedimentation tank 4 were removed one by one, it would consume a lot of time and manpower. However, in this application, the dirt on the inclined plate 41 can be cleaned without removing it, saving a lot of costs. There is also no need for other cleaning scrapers or other mechanisms. Only some modifications need to be made to the existing support frame 42, so it will not affect the flow of water. The water can flow smoothly on the inclined plate 41, ensuring the purification effect of the inclined plate sedimentation tank 4. This solves the technical problem in the prior art that the dirt on the inclined plate 41 affects the sludge settling and affects the purification standard of the entire multi-stage treatment purification device.

[0041] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

[0042] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A multi-stage water treatment and purification device, comprising an inclined plate sedimentation tank (4), wherein a support frame (42) for supporting the inclined plate (41) is provided inside the inclined plate sedimentation tank (4), characterized in that, The support frame (42) includes: A variable pitch shaft (421) is horizontally and rotatably installed in the inclined plate sedimentation tank (4); The guide rail (422) is horizontally arranged and parallel to the variable pitch shaft (421); A movable block (423) is provided with a rail groove (4231) that is slidably connected to the guide rail (422). A limiting post (4232) is provided on the movable block (423) and inserted into the pitch groove (4211) on the surface of the pitch shaft (421). A plurality of movable blocks (423) are provided on the pitch shaft (421). The insert (424) is vertically fixed to the movable block (423); The inclined plate (41) has a socket (411) that mates with the insert (424). The inclined plate (41) into which the insert (424) is inserted is in an inclined state. After the several moving blocks (423) are closed together, two adjacent inclined plates (41) abut against each other. The inclined plate sedimentation tank (4) is equipped with a drive motor (43) for driving the variable pitch shaft (421) to rotate.

2. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The support frame (42) also includes: The lower inclined block (425) is fixed on one side wall of the movable block (423), and the inclined surface of the lower inclined block (425) is inclined upward and faces the inclined plate (41); Among them, an upper inclined block (412) is fixed on the bottom surface of the inclined plate (41). The inclined surface of the upper inclined block (412) is inclined downward and faces the moving block (423). The lower inclined blocks (425) on each moving block (423) are located on the same side of the moving block (423). The upper inclined block (412) on the bottom surface of the inclined plate (41) on each moving block (423) and the lower inclined block (425) on the moving block (423) are respectively located on the bottom surface of the inclined plate (41). On both sides of the movable block (423), the inclined surface of the upper inclined block (412) is used to contact the inclined surface of the lower inclined block (425) on the adjacent inclined plate (41). The lower inclined blocks (425) on each movable block (423) have the same height, and the upper inclined blocks (412) on each inclined plate (41) have different heights. The insertion hole (411) on the inclined plate (41) and the insertion post (424) on the movable block (423) are fitted with a clearance.

3. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The purification device also includes: The filter screen (1) is used to remove fixed impurities from the water. The equalization tank (2) is used to receive the water filtered by the filter grid tank (1). The equalization tank (2) is equipped with a perforated aerator and is used to pre-treat some pollutants. The membrane bioreactor (3) is used to receive the water filtered by the equalization tank (2). The membrane bioreactor (3) is used to increase the sludge concentration and sludge activity in the water. The water filtered by the membrane bioreactor (3) will enter the inclined plate sedimentation tank (4). A deep filtration tank (5) is used to receive water filtered by the inclined plate sedimentation tank (4), and the deep filtration tank (5) is used for sand filtration and carbon filtration treatment.

4. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The inclined plate (41) has a number of protrusions (413) formed on the side that does not receive sludge, and the protrusions (413) are arranged at equal intervals on the inclined plate (41).

5. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The movable block (423) is provided with a groove (4233) covering the pitch shaft (421).

6. The multi-stage water treatment and purification device as described in claim 5, characterized in that, The groove (4233) is provided with rail grooves (4231) on both sides, and the guide rail (422) is provided in both rail grooves (4231).

7. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The support frame (42) is provided in two sets, and is located at both ends of the inclined plate (41). Both ends of the inclined plate (41) are provided with the insertion hole (411), which is used to cooperate with the insertion post (424) on the support frame (42) on both sides.

8. The multi-stage water treatment and purification device as described in claim 1, characterized in that, The thickness of the moving block (423) is less than the thickness of the inclined plate (41).

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