A multi-stage filtration device for industrial water treatment

Abstract

This invention relates to the field of filtration and discloses a multi-stage filtration device for industrial water treatment. A grooved ring is fixedly connected to the opposite sides of the curved plate. Clamping rods are symmetrically arranged on the outer surface of the connecting ring. The opposite sides of the clamping rods are fixedly connected to the outer surface of the connecting ring. The inner wall of the clamping rod is engaged with the outer surface of the grooved ring. A top ring is engaged with the inner wall of the clamping rod. A limit ring is fixedly connected to the bottom end of the filter cylinder. By setting the curved plate and clamping rods, the clamping rods deform synchronously during deformation. During deformation, the clamping force of the top ring and grooved ring on the filter bag is increased, preventing the filter bag from slipping and affecting filtration. When the residue inside the filter bag accumulates excessively, and the wastewater flow rate fluctuates, the filter bag experiences excessive impact. At this time, the curved plate buffers the impact force encountered by the filter bag through deformation, cooperating with the adjustment mechanism to prevent damage to the filter bag.

Description

Technical Field

[0001] This invention relates to the field of filtration, and more specifically to a multi-stage filtration device for industrial water treatment. Background Technology

[0002] Industrial wastewater refers to wastewater, sewage, and waste liquid generated during industrial production. It contains industrial raw materials, intermediate products, and finished products lost with the water, as well as pollutants generated during the production process. If it is directly discharged into rivers, it will seriously pollute the environment and cause great harm to human health. Therefore, whether the effluent after wastewater treatment meets the standards directly depends on the wastewater treatment equipment. As a process device in wastewater treatment equipment, the filtration device plays a crucial role in the entire wastewater treatment process. Insufficient filtration may lead to the overall quality of the wastewater after treatment not meeting the standards, thus causing environmental pollution.

[0003] In existing industrial water filtration processes, bag filtration is commonly used. However, during bag filtration, when the residue inside the filter bag accumulates excessively, the filter bag experiences excessive impact force when the wastewater flow rate fluctuates. This can easily cause the filter bag to detach or be damaged, severely affecting the normal filtration process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a multi-stage filtration device for industrial water treatment, comprising a filter chamber, a screening mechanism fixedly connected to the top of the filter chamber, and a filtration mechanism fixedly connected to the inner wall of the filter chamber, the filtration mechanism including a funnel, and further comprising:

[0005] An anti-detachment mechanism includes a funnel cylinder fixedly connected to the bottom of a funnel tray. A connecting ring is fixedly connected to the outer surface of the funnel cylinder. Curved plates are symmetrically arranged on the outer surface of the connecting ring. Opposite sides of the curved plates are fixedly connected to the outer surface of the connecting ring. Grooved rings are fixedly connected to opposite sides of the curved plates. Clamping rods are symmetrically arranged on the outer surface of the connecting ring. Opposite sides of the clamping rods are fixedly connected to the outer surface of the connecting ring. The inner wall of each clamping rod engages with the outer surface of the grooved ring. A top ring is engaged with the inner wall of each clamping rod. The bottom of the funnel cylinder... The end is fixedly connected with a limiting ring. During the process of filtering wastewater, the filter bag is clamped and fixed by the locking rod between the groove ring and the top ring. When the filtered residue in the filter bag continues to accumulate or the amount of wastewater passing through the filter bag is too large and the filter bag cannot filter out the wastewater quickly, the filter bag will fall due to gravity. During the downward movement of the top ring and groove ring, the locking rod will deform. The clamping plates holding the bottom of the top ring and the top of the groove ring will deform synchronously during the deformation of the locking rod.

[0006] A filter bag is snapped onto the inner wall of the groove ring, and the outer surface of the filter bag is snapped onto the top of the top ring. An adjustment mechanism is provided at the bottom of the filter bag, and the top of the adjustment mechanism is in contact with the bottom of the filter bag. The adjustment mechanism includes a tray, and the bottom of the tray is symmetrically provided with arc plates. The top of the arc plates is fixedly connected to the bottom of the tray, and the bottom of the arc plates is fixedly connected with a fixing ring. The wastewater after the residue is removed falls into the sieve tray, and the wastewater flows slowly into the filter bag along the inclination of the inner wall of the sieve tray. At the same time, the filter bag is protected during the process of filtering wastewater through the cooperation of the adjustment mechanism and the anti-detachment mechanism.

[0007] The bottom of the fixing ring is symmetrically provided with support rods, the top of the support rods is fixedly connected to the bottom of the fixing ring, and the bottom of the support rods is fixedly connected to the inner wall of the filter chamber. The inner wall of the fixing ring is symmetrically provided with clamping rods, and the outer surface of the clamping rods is rotatably connected to the inner wall of the fixing ring. The bottom of the tray is fixedly connected with a connecting plate, and the bottom of the connecting plate is symmetrically provided with pressure rods. The top of the pressure rods is fixedly connected to the bottom of the connecting plate, and the non-opposite side of the pressure rods is fixedly connected to the opposite side of the clamping rods. During the downward movement of the filter bag, the tray in contact with the filter bag, through the cooperation of the arc plate and the tray, buffers the internal impact force on the filter bag through deformation as the tray moves slightly downward with the filter bag. At the same time, during the downward movement of the tray, the pressure rods push the clamping rods to rotate and clamp the filter bag inward.

[0008] The top of the screening mechanism is fixedly connected to a water inlet pipe, and the outer surface of the filter chamber is fixedly connected to a support ring. Support legs are symmetrically arranged at the bottom of the support ring, and the tops of the support legs are fixedly connected to the bottom of the support ring. A chassis is fixedly connected to the bottom of the filter chamber, and a water outlet pipe is fixedly connected to the bottom of the chassis. Leak-proof blocks are symmetrically arranged at the bottom of the chassis, with the tops of the leak-proof blocks fixedly connected to the bottom of the chassis and the opposite sides of the leak-proof blocks fixedly connected to the outer surface of the filter chamber. Industrial wastewater filtered by the filter bag accumulates in the filter chamber and is discharged through the water outlet pipe at the bottom of the chassis. Simultaneously, the leak-proof blocks reinforce the connection between the bottom of the filter chamber and the chassis to prevent wastewater leakage.

[0009] The screening mechanism includes a screen cylinder, with a stacking ring fixedly connected to the bottom end of the screen cylinder and a cover fixedly connected to the top of the stacking ring. The top of the cover is fixedly connected to the bottom of the inlet pipe. A sliding ring is rotatably connected to the inner wall of the screen cylinder, and a sliding rod is slidably connected to the inner wall of the sliding ring. A spring is fixedly connected to the bottom of the sliding ring, and a pressure plate is fixedly connected to the bottom of the spring. Anti-clogging mechanisms are symmetrically arranged at the bottom of the pressure plate, with the opposite side of the anti-clogging mechanism fixedly connected to the bottom of the pressure plate. The top of the pressure plate is fixedly connected to the bottom of the sliding rod. A bottom ring is fixedly connected to the bottom of the stacking ring. Industrial wastewater enters the screening mechanism through the inlet pipe, and the water flows over the surface of the screen cylinder. The gap between the anti-clogging mechanism and the holes on the surface of the screen cylinder allows the water and fine residues to pass through, while blocking large residues. Large residues slide down the slope of the screen cylinder surface to the bottom. Compared to a screen plate, the screen cylinder allows residues to slide off and prevents them from accumulating on the surface, thus avoiding interference with the screening process.

[0010] The anti-clogging mechanism includes an orifice plate, on the outer surface of which spring plates are symmetrically arranged. The inner wall of the spring plates is fixedly connected to the outer surface of the orifice plate. A top block is fixedly connected to the top of the spring plates. A locking block is fixedly connected to the outer surface of the orifice plate. A fixing rod is fixedly connected to the outer surface of the locking block. The top of the fixing rod is fixedly connected to the bottom of the pressure plate. When the anti-clogging mechanism blocks the surface of the screen cylinder, the residue is screened through the gap between the top block and the screen cylinder hole. The outer diameter of the top block is smaller than the diameter of the screen cylinder hole. At the same time, the top block protrudes from the outer surface of the screen cylinder. Since the top block is higher than the outer surface of the screen cylinder, when the residue in the wastewater impacts the screen cylinder, it contacts the screen cylinder through the top block, which is higher than the surface of the screen cylinder.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. This invention uses a curved plate and a clamping rod. The clamping rod deforms synchronously during its deformation process, increasing the clamping force of the top ring and groove ring on the filter bag to prevent the filter bag from slipping and affecting the filtration process. When the residue inside the filter bag accumulates too much, the filter bag is subjected to excessive impact force due to the fluctuating flow rate of the wastewater. At this time, the curved plate buffers the impact force encountered by the filter bag through deformation, and works with the adjustment mechanism to prevent damage to the filter bag.

[0013] 2. The present invention uses a limiting ring to cause the curved plate to deform, causing the filter bag to slide down and increasing the contact with the adjustment mechanism. The limiting ring at the bottom restricts the downward movement distance during the downward movement, preventing the filter bag from falling off.

[0014] 3. By setting up an arc plate, the present invention buffers the internal impact force on the filter bag through deformation as the tray moves slightly downward with the filter bag.

[0015] 4. The present invention uses clamping rods to restrict the filter bag on the outside before it moves down, preventing it from shifting and detaching from the adjustment mechanism under the impact of water flow during filtration. At the same time, the clamping rods clamp the filter bag inward during its downward movement, applying pressure to the filter bag from the outside and accelerating the filtration speed.

[0016] 5. By setting up a screen cylinder, the present invention utilizes the gap between the anti-blocking mechanism and the holes on the surface of the screen cylinder to allow water flow and fine residue to pass through, while blocking large residues. This allows large residues to slide down the slope of the screen cylinder surface to the bottom. Compared with a screen plate, the screen cylinder allows residues to slide off and does not accumulate on the surface, thus affecting the screening process.

[0017] 6. By setting a top block, since the top block is higher than the outer surface of the screen cylinder, when the screen cylinder is impacted by residue in the wastewater, the top block, which is higher than the surface of the screen cylinder, makes contact, and at the same time, the deformation of the spring plate buffers the impact, preventing the residue from damaging the screen cylinder. Attached Figure Description

[0018] Figure 1 This is a front view of the multi-stage filtration device for industrial water treatment according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the multi-stage filtration device for industrial water treatment according to the present invention;

[0020] Figure 3 This is a schematic diagram of the filtration mechanism of the present invention;

[0021] Figure 4 This is a sectional view of the anti-detachment mechanism of the present invention;

[0022] Figure 5 This is a schematic diagram of the adjustment mechanism of the present invention;

[0023] Figure 6 This is a sectional view of the screening mechanism of the present invention;

[0024] Figure 7 This is a schematic diagram of the screening mechanism of the present invention;

[0025] Figure 8 This is a schematic diagram of the anti-blocking mechanism of the present invention.

[0026] In the diagram: 1. Filter chamber; 2. Filtering mechanism; 3. Screening mechanism; 4. Inlet pipe; 5. Leak-proof block; 6. Support ring; 7. Support leg; 8. Chassis; 9. Outlet pipe; 21. Anti-detachment mechanism; 22. Filter bag; 23. Adjustment mechanism; 24. Drip tray; 211. Drip cylinder; 212. Connecting ring; 213. Curved plate; 214. Locking rod; 215. Groove ring; 216. Limiting ring; 217. Top ring; 231. 232. Arc plate; 233. Tray; 234. Fixing ring; 235. Support rod; 236. Connecting plate; 237. Pressure rod; 238. Clamping rod; 31. Slip ring; 32. Sliding rod; 33. Cover cylinder; 34. Stacking ring; 35. Screen cylinder; 36. Anti-blocking mechanism; 37. Pressure plate; 38. Spring; 39. Bottom ring; 361. Perforated plate; 362. Top block; 363. Spring plate; 364. Locking block; 365. Fixing rod. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0028] Example 1, as Figures 1-5 As shown, a multi-stage filtration device for industrial water treatment includes a filter chamber 1, a screening mechanism 3 fixedly connected to the top of the filter chamber 1, and a filtration mechanism 2 fixedly connected to the inner wall of the filter chamber 1. The filtration mechanism 2 includes a funnel 24 and further includes:

[0029] The anti-detachment mechanism 21 includes a funnel cylinder 211 fixedly connected to the bottom of the funnel tray 24. A connecting ring 212 is fixedly connected to the outer surface of the funnel cylinder 211. Curved plates 213 are symmetrically arranged on the outer surface of the connecting ring 212. Opposite sides of the curved plates 213 are fixedly connected to the outer surface of the connecting ring 212. A grooved ring 215 is fixedly connected to the opposite side of the curved plates 213. A locking rod 214 is symmetrically arranged on the outer surface of the connecting ring 212. Opposite sides of the locking rod 214 are fixedly connected to the outer surface of the connecting ring 212. The filter bag 22 is fixedly connected to the surface. The inner wall of the clamping rod 214 is engaged with the outer surface of the groove ring 215. The inner wall of the clamping rod 214 is engaged with the top ring 217. The bottom end of the filter cylinder 211 is fixedly connected with the limit ring 216. During the process of filtering wastewater, the filter bag 22 is clamped and fixed by the engagement between the groove ring 215 and the top ring 217 through the clamping process of the clamping rod 214. As the filtered residue in the filter bag 22 continues to accumulate... Alternatively, if the wastewater volume in filter bag 22 is too large and filter bag 22 cannot filter out the wastewater quickly, filter bag 22 will fall due to gravity. At this time, curved plate 213 deforms, causing filter bag 22 to slide down, increasing contact with adjusting mechanism 23. The bottom limiting ring 216 limits the downward movement distance during the downward movement to prevent filter bag 22 from falling off. During the downward movement of top ring 217 and groove ring 215, the clamping rod 214 deforms, clamping the bottom of top ring 217 and the top of groove ring 215. The clamping plate deforms synchronously with the deformation of the clamping rod 214. During the deformation process, the clamping force of the top ring 217 and the groove ring 215 on the filter bag 22 is increased to prevent the filter bag 22 from slipping and affecting the filtration process. When the residue inside the filter bag 22 accumulates too much, the filter bag 22 is subjected to excessive impact force when the wastewater flow rate is sometimes fast and sometimes slow. At this time, the curved plate 213 buffers the impact force encountered by the filter bag 22 through deformation and cooperates with the adjustment mechanism 23 to prevent the filter bag 22 from being damaged.

[0030] A filter bag 22 is snapped onto the inner wall of the groove ring 215. The outer surface of the filter bag 22 is snapped onto the top of the top ring 217. An adjustment mechanism 23 is provided at the bottom of the filter bag 22. The top of the adjustment mechanism 23 is in contact with the bottom of the filter bag 22. The adjustment mechanism 23 includes a tray 232. An arc plate 231 is symmetrically arranged at the bottom of the tray 232. The top of the arc plate 231 is fixedly connected to the bottom of the tray 232. A fixing ring 233 is fixedly connected to the bottom of the arc plate 231. The wastewater after the residue is removed falls into the sieve tray 24. The wastewater flows slowly into the filter bag 22 along the inclination of the inner wall of the sieve tray 24. At the same time, the filter bag 22 is protected during the process of filtering wastewater by the cooperation of the adjustment mechanism 23 and the anti-detachment mechanism 21.

[0031] A support rod 234 is symmetrically arranged at the bottom of the fixing ring 233. The top of the support rod 234 is fixedly connected to the bottom of the fixing ring 233, and the bottom of the support rod 234 is fixedly connected to the inner wall of the filter chamber 1. A clamping rod 237 is symmetrically arranged on the inner wall of the fixing ring 233. The outer surface of the clamping rod 237 is rotatably connected to the inner wall of the fixing ring 233. A connecting plate 235 is fixedly connected to the bottom of the tray 232. A pressure rod 236 is symmetrically arranged at the bottom of the connecting plate 235. The top of the pressure rod 236 is fixedly connected to the bottom of the connecting plate 235, and the non-opposite side of the pressure rod 236 is fixedly connected to the opposite side of the clamping rod 237. During the downward movement of the filter bag 22, the tray 232, which is in contact with the filter bag 22, ... 2. During the downward movement, the arc plate 231 and the tray 232 work together to cushion the internal impact force on the filter bag 22 as the tray 232 moves slightly downward with the filter bag 22 through deformation. At the same time, as the tray 232 moves downward, the pressure rod 236 pushes the clamping rod 237 to rotate and clamp the filter bag 22 inward. Before the filter bag 22 moves downward, the clamping rods 237 around the filter bag 22 restrict the filter bag 22 on the outside to prevent the filter bag 22 from deviating and detaching from the adjustment mechanism 23 under the impact of water flow during the filtration process. At the same time, the inward clamping of the filter bag 22 during the downward movement applies pressure to the filter bag 22 from the outside, thereby accelerating the filtration speed of the filter bag 22.

[0032] The top of the screening mechanism 3 is fixedly connected to the water inlet pipe 4, the outer surface of the filter chamber 1 is fixedly connected to the support ring 6, the bottom of the support ring 6 is symmetrically provided with support legs 7, the top of the support legs 7 is fixedly connected to the bottom of the support ring 6, the bottom of the filter chamber 1 is fixedly connected to the chassis 8, the bottom of the chassis 8 is fixedly connected to the water outlet pipe 9, the bottom of the chassis 8 is symmetrically provided with anti-leakage blocks 5, the top of the anti-leakage blocks 5 is fixedly connected to the bottom of the chassis 8, and the opposite side of the anti-leakage blocks 5 is fixedly connected to the outer surface of the filter chamber 1. The industrial wastewater filtered by the filter bag 22 accumulates in the filter chamber 1 and is discharged through the water outlet pipe 9 at the bottom of the chassis 8. At the same time, the anti-leakage blocks 5 reinforce the connection between the bottom of the filter chamber 1 and the chassis 8 to prevent wastewater from seeping out.

[0033] Example 2, see Example 1 for further details. Figures 6-8The screening mechanism 3 includes a screen cylinder 35. A stacking ring 34 is fixedly connected to the bottom end of the screen cylinder 35. A cover cylinder 33 is fixedly connected to the top of the stacking ring 34. The top of the cover cylinder 33 is fixedly connected to the bottom of the water inlet pipe 4. A sliding ring 31 is rotatably connected to the inner wall of the screen cylinder 35. A sliding rod 32 is slidably connected to the inner wall of the sliding ring 31. A spring 38 is fixedly connected to the bottom of the sliding ring 31. A pressure plate 37 is fixedly connected to the bottom end of the spring 38. Anti-blocking mechanisms 36 are symmetrically arranged at the bottom of the pressure plate 37. The opposite sides of the anti-blocking mechanisms 36 are fixedly connected to the bottom of the pressure plate 37. The top of the pressure plate 37 is fixedly connected to the bottom end of the sliding rod 32. A stacking ring 34 is fixedly connected to the bottom of the screen cylinder 35. Bottom ring 39: Industrial wastewater enters the screening mechanism 3 through the inlet pipe 4. The water flows over the surface of the screen cylinder 35. The gap between the anti-clogging mechanism 36 and the holes on the surface of the screen cylinder 35 allows the water and small residues to pass through, while blocking large residues. Large residues slide down the slope of the screen cylinder 35 to the bottom. Compared with the screen plate, the screen cylinder 35 allows the residues to slide off and will not accumulate on the surface, thus affecting the screening process. The residues are collected inside the accumulation ring 34. At the same time, during the screening process, the cover cylinder 33 prevents wastewater from splashing out and leaves a gap between it and the accumulation ring 34 to facilitate the cleaning of the residues accumulated in the accumulation ring 34.

[0034] The anti-blocking mechanism 36 includes an orifice plate 361. Spring plates 363 are symmetrically arranged on the outer surface of the orifice plate 361. The inner wall of the spring plates 363 is fixedly connected to the outer surface of the orifice plate 361. A top block 362 is fixedly connected to the top of the spring plates 363. A locking block 364 is fixedly connected to the outer surface of the orifice plate 361. A fixing rod 365 is fixedly connected to the outer surface of the locking block 364. The top end of the fixing rod 365 is fixedly connected to the bottom of the pressure plate 37. When the anti-blocking mechanism 36 blocks the surface of the screen cylinder 35, the material is screened through the gap between the top block 362 and the orifice of the screen cylinder 35. The outer diameter of the top block 362 is smaller than the orifice of the screen cylinder 35. The diameter of the hole is such that the top block 362 protrudes from the outer surface of the screen cylinder 35. Since the top block 362 is higher than the outer surface of the screen cylinder 35, when the residue in the wastewater impacts the screen cylinder 35, it contacts the screen cylinder 35 through the top block 362 which is higher than the surface of the screen cylinder 35. At the same time, the spring plate 363 deforms to buffer the impact and prevent the residue from damaging the screen cylinder 35. Meanwhile, when the water flow speed increases, the water flow impacts the slide bar 32, causing the spring 38 to stretch and push the pressure plate 37 to move down, which in turn drives the anti-blocking mechanism 36 to move down. The gap between the top block 362 and the hole of the screen cylinder 35 increases, allowing the water to flow through quickly and preventing wastewater from overflowing.

[0035] In use, industrial wastewater is introduced into the screening mechanism 3 through the inlet pipe 4. The water flows over the surface of the screen cylinder 35. The gap between the anti-blocking mechanism 36 and the holes on the surface of the screen cylinder 35 allows the water and small residues to pass through, while blocking large residues. Large residues slide down the slope of the screen cylinder 35 to the bottom and are collected inside the accumulation ring 34.

[0036] When the anti-blocking mechanism 36 blocks the surface of the screen cylinder 35, the material is screened through the gap between the top block 362 and the hole of the screen cylinder 35. The outer diameter of the top block 362 is smaller than the diameter of the hole of the screen cylinder 35, and the top block 362 protrudes from the outer surface of the screen cylinder 35.

[0037] After large debris is removed by screening, the wastewater falls into the sieve plate 24. The wastewater flows slowly into the filter bag 22 along the inclination of the inner wall of the sieve plate 24. At the same time, the filter bag 22 is protected by the cooperation of the adjustment mechanism 23 and the anti-detachment mechanism 21 during the process of filtering wastewater.

[0038] During the process of filtering wastewater by the filter bag 22, the filter bag 22 is clamped and fixed by the clamping process between the groove ring 215 and the top ring 217 through the clamping rod 214. When the residue filtered in the filter bag 22 continues to accumulate or the amount of wastewater passing through the filter bag 22 is too large and the filter bag 22 cannot filter out the wastewater quickly, the filter bag 22 falls due to gravity. At this time, the curved plate 213 deforms, causing the filter bag 22 to slide down and increase the contact with the adjusting mechanism 23. During the downward movement of the top ring 217 and the groove ring 215, the clamping rod 214 deforms. The clamping plate holding the bottom of the top ring 217 and the top of the groove ring 215 deforms synchronously during the deformation of the clamping rod 214.

[0039] During the downward movement of the filter bag 22, the tray 232, which is in contact with the filter bag 22, cushions the internal impact force on the filter bag 22 through the cooperation of the arc plate 231 and the tray 232 as the tray 232 moves slightly downward with the filter bag 22 by deformation. At the same time, during the downward movement of the tray 232, the pressure rod 236 pushes the clamping rod 237 to rotate and clamp the filter bag 22 inward.

[0040] Industrial wastewater filtered by filter bag 22 accumulates in filter chamber 1 and is discharged through water outlet pipe 9 at the bottom of chassis 8. At the same time, leak-proof block 5 reinforces the connection between the bottom of filter chamber 1 and chassis 8 to prevent wastewater from seeping out.

[0041] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multi-stage filtering device for industrial water treatment, comprising a filtering bin (1), a screening mechanism (3) is fixedly connected to the top of the filtering bin (1), and a filtering mechanism (2) is fixedly connected to the inner wall of the filtering bin (1), characterized in that: The filtering mechanism (2) comprises a leakage disc (24) and further comprises: The anti-disengagement mechanism (21) comprises a leakage cylinder (211) fixedly connected to the bottom of the leakage disc (24), the outer surface of the leakage cylinder (211) is fixedly connected with a connecting ring (212), the outer surface of the connecting ring (212) is symmetrically provided with a curved plate (213), the opposite side of the curved plate (213) is fixedly connected with the outer surface of the connecting ring (212), the opposite side of the curved plate (213) is fixedly connected with a groove ring (215), the outer surface of the connecting ring (212) is symmetrically provided with a clamping rod (214), the opposite side of the clamping rod (214) is fixedly connected with the outer surface of the connecting ring (212), the inner wall of the clamping rod (214) is clamped with the outer surface of the groove ring (215), the inner wall of the clamping rod (214) is clamped with a top ring (217), and the bottom end of the leakage cylinder (211) is fixedly connected with a limiting ring (216); The inner wall of the groove ring (215) is clamped with a filter bag (22), the outer surface of the filter bag (22) is clamped with the top of the top ring (217), and the bottom of the filter bag (22) is provided with an adjusting mechanism (23) which is in close contact with the bottom of the filter bag (22); The adjusting mechanism (23) comprises a tray (232), the bottom of the tray (232) is symmetrically provided with an arc plate (231), the top of the arc plate (231) is fixedly connected with the bottom of the tray (232), and the bottom of the arc plate (231) is fixedly connected with a fixing ring (233); The bottom of the fixing ring (233) is symmetrically provided with a supporting rod (234), the top of the supporting rod (234) is fixedly connected with the bottom of the fixing ring (233), the bottom of the supporting rod (234) is fixedly connected with the inner wall of the filtering bin (1), and the inner wall of the fixing ring (233) is symmetrically provided with a clamping rod (237) which is rotationally connected with the inner wall of the fixing ring (233); The bottom of the tray (232) is fixedly connected with a connecting disc (235), the bottom of the connecting disc (235) is symmetrically provided with a pressing rod (236), the top of the pressing rod (236) is fixedly connected with the bottom of the connecting disc (235), and the non-opposite side of the pressing rod (236) is fixedly connected with the opposite side of the clamping rod (237).

2. A multi-stage filtration apparatus for industrial water treatment according to claim 1, characterized in that: The top of the screening mechanism (3) is fixedly connected with a water inlet pipe (4), the outer surface of the filtering bin (1) is fixedly connected with a supporting ring (6), the bottom of the supporting ring (6) is symmetrically provided with a supporting leg (7), and the top of the supporting leg (7) is fixedly connected with the bottom of the supporting ring (6).

3. A multi-stage filtration apparatus for industrial water treatment according to claim 2, characterized in that: The screening mechanism (3) comprises a sieve cylinder (35), the bottom end of the sieve cylinder (35) is fixedly connected with an accumulation ring (34), the top of the accumulation ring (34) is fixedly connected with a cover cylinder (33), the top of the cover cylinder (33) is fixedly connected with the bottom of the water inlet pipe (4), and the inner wall of the sieve cylinder (35) is rotationally connected with a sliding ring (31).

4. A multi-stage filtration apparatus for industrial water treatment according to claim 3, characterized in that: The inner wall of the sliding ring (31) is slidably connected with a sliding rod (32), the bottom of the sliding ring (31) is fixedly connected with a spring (38), the bottom end of the spring (38) is fixedly connected with a pressure plate (37), the bottom of the pressure plate (37) is symmetrically provided with an anti-blocking mechanism (36), the opposite sides of the anti-blocking mechanism (36) are fixedly connected with the bottom of the pressure plate (37), the top of the pressure plate (37) is fixedly connected with the bottom end of the sliding rod (32), and the bottom of the accumulation ring (34) is fixedly connected with a bottom ring (39).

5. The multi-stage filtration apparatus for industrial water treatment of claim 1, wherein: The bottom of the filter bin (1) is fixedly connected with a bottom disc (8), the bottom of the bottom disc (8) is fixedly connected with a water outlet pipe (9), the bottom of the bottom disc (8) is symmetrically provided with a leakage-proof block (5), the top of the leakage-proof block (5) is fixedly connected with the bottom of the bottom disc (8), and the opposite sides of the leakage-proof block (5) are fixedly connected with the outer surface of the filter bin (1).

6. A multi-stage filtration apparatus for industrial water treatment according to claim 4, characterized in that: The anti-blocking mechanism (36) comprises a hole plate (361), the outer surface of the hole plate (361) is symmetrically provided with an elastic plate (363), the inner wall of the elastic plate (363) is fixedly connected with the outer surface of the hole plate (361), the top of the elastic plate (363) is fixedly connected with a top block (362), the outer surface of the hole plate (361) is fixedly connected with a clamping block (364), the outer surface of the clamping block (364) is fixedly connected with a fixing rod (365), and the top end of the fixing rod (365) is fixedly connected with the bottom of the pressure plate (37).

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