A filtration mechanism and an apparatus for preparing industrial pure water.

Abstract

This invention discloses a filtration mechanism and device for industrial pure water preparation, relating to the field of industrial pure water preparation technology. It includes an activated carbon filter with an inlet pipe and an outlet pipe connected to its upper and lower ends, respectively. A drain pipe is also connected to the lower end of the activated carbon filter. Solenoid valves are installed on the inlet, outlet, and drain pipes. A U-shaped sedimentation tank is fixedly connected to the lower end of the drain pipe, forming a sedimentation chamber. This invention improves upon existing activated carbon filters, enabling them to perform activated carbon rinsing, remove activated carbon dust, and collect the dust without wasting water resources. The rinsing operation is simple, and the rinsed activated carbon can be used directly, making it more convenient to use. This invention forms an improved solution that integrates low improvement cost, convenient operation, good rinsing effect, and water conservation.

Description

Technical Field

[0001] This invention relates to the field of industrial pure water preparation technology, and in particular to a filtration mechanism and an industrial pure water preparation device. Background Technology

[0002] Industrial pure water is generally produced through the following steps: raw water is processed sequentially through a quartz sand filter, an activated carbon filter, a precision filter, a reverse osmosis device, and a sterilization device to obtain pure water that meets the required quality standards.

[0003] Activated carbon filters are a commonly used water treatment device. As a pretreatment in water treatment desalination systems, they adsorb residual chlorine that cannot be removed by upstream filtration, effectively ensuring the service life of downstream equipment, improving effluent quality, and preventing contamination, especially preventing poisoning from free residual chlorine in downstream reverse osmosis membranes and ion exchange resins. They also adsorb small-molecule organic pollutants leaking from upstream processes, exhibiting significant adsorption and removal effects on odors, colloids, pigments, and heavy metal ions in the water, and reducing COD. Furthermore, they can further reduce the SDI value of RO feed water, ensuring SDI < 5 and TOC < 2.0 ppm.

[0004] It is worth noting that in the initial stage of using activated carbon (or during the initial operation after replacing activated carbon), a small amount of extremely fine powdered activated carbon may enter the reverse osmosis equipment system with the water flow, causing fouling of the reverse osmosis membrane channels, resulting in increased operating pressure, decreased permeate flow, and increased system pressure drop. Moreover, this destructive effect is difficult to reverse using conventional cleaning methods. Therefore, the activated carbon must be thoroughly rinsed to remove the fine powder before the filtered water can be sent to the subsequent RO system. However, existing activated carbon filters do not have the function of rinsing activated carbon, and the cleaning operation must be carried out externally. After cleaning, the activated carbon still needs to be dried before it can be easily added to the activated carbon filter for use. The operation of removing activated carbon powder is quite inconvenient. Therefore, there is a need for a filtration mechanism and device for industrial pure water preparation. Summary of the Invention

[0005] The purpose of this application is to provide a filtration mechanism and an industrial pure water preparation device for industrial pure water preparation, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a filtration mechanism and an industrial pure water preparation device, including an activated carbon filter, with an inlet pipe and an outlet pipe respectively connected to the upper and lower ends of the activated carbon filter, and a drain pipe connected to the lower end of the activated carbon filter, and solenoid valves are installed on the inlet pipe, the outlet pipe and the drain pipe.

[0007] A U-shaped sedimentation tank is fixedly connected to the lower end of the drain pipe. A sedimentation chamber is formed inside the U-shaped sedimentation tank. A backflushing pump is installed at the end of the U-shaped sedimentation tank away from the drain pipe. A suction pipe is fixedly connected to the upper part of the end of the U-shaped sedimentation tank away from the drain pipe. One end of the suction pipe is connected to the input end of the backflushing pump. The output end of the backflushing pump is fixedly connected to the backflushing pipe. The other end of the backflushing pipe is connected to the upper end of the activated carbon filter.

[0008] The lower end of the suction tube extends to the lower part of the sedimentation chamber.

[0009] As a further supplement to this solution, a vertically installed baffle is fixed inside the sedimentation chamber, with the lower end of the baffle extending downwards and its horizontal height being lower than the horizontal height of the lower end of the suction tube.

[0010] A filter membrane is attached to the lower end of the baffle near the suction tube. One end of the filter membrane extends to the side wall inside the sedimentation chamber. The baffle and the filter membrane accessory separate the sedimentation chamber into two areas.

[0011] The suction tube is located in the area above the filter membrane.

[0012] As a further supplement to this solution, an opening is provided on one side of the U-shaped sedimentation tank, and a material dispensing door is closed inside the opening. An opening for installing a filter membrane is provided on the other side of the U-shaped sedimentation tank, and an arc-shaped wall plate adapted to the side wall of the U-shaped sedimentation tank is closed at the opening. The inner side wall of the arc-shaped wall plate is fixed to one end of the filter membrane, and the arc-shaped wall plate forms a seal when the opening is closed.

[0013] As a further supplement to this solution, a water distribution plate is fixed inside the activated carbon filter. The water distribution plate is located in the upper part of the activated carbon filter and is connected to the water inlet pipe. Multiple evenly distributed water outlet holes are opened at the lower end of the water distribution plate.

[0014] The upper end of the backflush pipe passes through the activated carbon filter and is connected to the water distribution plate.

[0015] As a further supplement to this solution, a support filter plate is fixed inside the activated carbon filter. The support filter plate is located in the lower part of the activated carbon filter. Activated carbon particles are filled above the support filter plate, and filter pads are filled at both the top and bottom of the activated carbon particles.

[0016] As a further supplement to this solution, a packing pipe and a discharge pipe are also fixed on one side of the activated carbon filter. Both the packing pipe and the discharge pipe are connected to the activated carbon filter. The packing pipe is located below the water distribution plate and above the activated carbon filter. The lower end of the packing pipe is above the activated carbon particles. The discharge pipe is located above the support filter plate and below the activated carbon filter. The upper end of the discharge pipe is above the filter pad below.

[0017] Solenoid valves are also installed on the packing pipe and the discharge pipe.

[0018] As a further improvement of this application, two baffles are provided. The two baffles are fixed to the inner top wall and the bottom wall of the sedimentation chamber, respectively, and there is a gap between the other end of the two baffles and the inner wall of the sedimentation chamber.

[0019] The lower baffle also has an extended baffle plate at the upper part, which extends horizontally.

[0020] As a further supplement to this scheme, a carbon block is also fixed on the top wall of the sedimentation chamber on the side away from the suction pipe from the baffle. The carbon block is a conical block with a larger diameter at the top and a smaller diameter at the bottom.

[0021] The surface of the carbonized lumps is covered with densely distributed hairs.

[0022] As a further supplement to this solution, several vertically distributed guide plates are fixed on the inner wall of the connection port between the U-shaped sedimentation tank and the drain pipe. The two adjacent guide plates are symmetrically arranged, and the two guide plates that make a bell coincide at their tail ends in the vertical direction.

[0023] An impeller is installed above the top guide plate. One side of the impeller is located below the connection between the U-shaped sedimentation tank and the drain pipe. The impeller is rotatably connected to the inner wall of the U-shaped sedimentation tank.

[0024] An industrial pure water preparation device includes the aforementioned industrial pure water preparation filtration mechanism, comprising a quartz sand filter, an activated carbon filter, a precision filter, a reverse osmosis device, and a sterilization device. The quartz sand filter, activated carbon filter, precision filter, reverse osmosis device, and sterilization device are connected in sequence via pipelines. The input end of the quartz sand filter is connected to raw water, and the output end of the sterilization device outputs industrial pure water.

[0025] In summary, the technical effects and advantages of this invention are as follows:

[0026] 1. In this invention, by setting up a U-shaped sedimentation tank, after filling with new activated carbon, the user only needs to close the solenoid valve on the outlet pipe and open the solenoid valves on the inlet and outlet pipes at the same time. This allows the pre-treated water to enter the activated carbon filter through the inlet pipe and rinse the activated carbon. The activated carbon dust then enters the U-shaped sedimentation tank with the water flow and settles there. Since activated carbon dust is also present in the U-shaped sedimentation tank, the water in the U-shaped sedimentation tank is secondary treated water after being adsorbed by both activated carbon and activated carbon dust. The user can use the backwash pump and suction pipe to extract the secondary treated water from the U-shaped sedimentation tank for the next rinse of new activated carbon, thus achieving the reuse of water resources.

[0027] The existing activated carbon filter has been improved to enable it to rinse the activated carbon, remove activated carbon dust, and collect the dust without wasting water resources. The rinsing operation is simple, and the rinsed activated carbon can be used directly, making it more convenient to use. This improvement solution integrates low improvement cost, convenient operation, good rinsing effect, and water conservation.

[0028] 2. In this invention, the baffle and filter membrane can block the activated carbon dust entering the sedimentation chamber, allowing the activated carbon dust to settle to the bottom of the sedimentation chamber more quickly. At the same time, it can prevent activated carbon dust from entering the suction pipe with the water flow when the suction pipe is pumped out, thus preventing the activated carbon dust from flowing back. It can also prevent the backflushing pump from being subjected to a greater workload or damaged, ensuring the feasibility of reusing the water resources in the U-shaped sedimentation tank. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the filtration mechanism for industrial pure water preparation in Example 1;

[0031] Figure 2 This is a cross-sectional view of the activated carbon filter and U-shaped sedimentation tank in Example 1;

[0032] Figure 3 This is a schematic diagram of the U-shaped sedimentation tank structure in Example 1;

[0033] Figure 4 This is a schematic cross-sectional view of the U-shaped sedimentation tank in Example 1;

[0034] Figure 5 This is a schematic diagram of the industrial pure water preparation device in Example 1;

[0035] Figure 6 This is a cross-sectional view of the U-shaped sedimentation tank in Example 2.

[0036] In the diagram: 1. Quartz sand filter; 2. Activated carbon filter; 21. Inlet pipe; 22. Outlet pipe; 23. Packing pipe; 24. Discharge pipe; 25. Drain pipe; 26. Water distribution tray; 27. Filter pad; 28. Activated carbon granules; 29. ​​Supporting filter plate; 3. Precision filter; 4. Reverse osmosis device; 5. Sterilization device; 6. U-shaped sedimentation tank; 61. Sedimentation chamber; 62. Feed gate; 63. Arc-shaped wall panel; 64. Filter membrane; 65. Baffle; 651. Extension baffle; 66. Carbonized clump; 661. Floss; 67. Guide plate; 68. Impeller; 7. Backflush pump; 8. Suction pipe; 9. Backflush pipe. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1

[0039] refer to Figure 1-2 The filter mechanism for preparing industrial pure water shown includes an activated carbon filter 2. The upper and lower ends of the activated carbon filter 2 are respectively connected to an inlet pipe 21 and an outlet pipe 22. The lower end of the activated carbon filter 2 is also connected to a drain pipe 25. Solenoid valves are installed on the inlet pipe 21, the outlet pipe 22 and the drain pipe 25.

[0040] The lower end of the drain pipe 25 is fixedly connected to a U-shaped sedimentation tank 6, and a sedimentation chamber 61 is formed inside the U-shaped sedimentation tank 6. A backwash pump 7 is installed at the end of the U-shaped sedimentation tank 6 away from the drain pipe 25. A suction pipe 8 is fixedly connected to the upper part of the end of the U-shaped sedimentation tank 6 away from the drain pipe 25. One end of the suction pipe 8 is connected to the input end of the backwash pump 7. The output end of the backwash pump 7 is fixedly connected to a backwash pipe 9. The other end of the backwash pipe 9 is connected to the upper end of the activated carbon filter 2.

[0041] The lower end of the suction tube 8 extends to the lower part of the sedimentation chamber 61.

[0042] Based on the above structure, when using the activated carbon, after filling (or replacing) it with new activated carbon, the user needs to close the solenoid valve on the outlet pipe 22 and open the solenoid valves on the inlet pipe 21 and the drain pipe 25 at the same time. This allows the pre-treated water to enter the activated carbon filter 2 through the inlet pipe 21 and flush the activated carbon. The activated carbon dust then enters the U-shaped sedimentation tank 6 with the water flow and settles there. Since activated carbon dust is also present in the U-shaped sedimentation tank 6, the water in the U-shaped sedimentation tank 6 is secondary treated water after being adsorbed by both activated carbon and activated carbon dust. The user can use the backwash pump 7 and the suction pipe 8 to suck up the secondary treated water in the U-shaped sedimentation tank 6 for the next flushing operation of the new activated carbon, thus achieving the reuse of water resources.

[0043] After improving the existing activated carbon filter 2, the activated carbon filter 2 can perform activated carbon rinsing, remove activated carbon dust, and collect activated carbon dust. At the same time, it will not waste water resources. The rinsing operation is simple, and the rinsed activated carbon can be used directly, making it more convenient to use. This forms an improvement solution that integrates low improvement cost, convenient operation, good rinsing effect, and saving rinsing water resources.

[0044] Furthermore, such as Figures 3-4 As shown, a vertically arranged baffle 65 is fixed inside the sedimentation chamber 61. The lower end of the baffle 65 extends downward and its horizontal height is lower than the horizontal height of the lower end of the suction tube 8.

[0045] A filter membrane 64 is snapped onto the lower end of the side of the baffle 65 near the suction tube 8. One end of the filter membrane 64 extends to the side wall inside the sedimentation chamber 61. The baffle 65 and the filter membrane 64 separate the sedimentation chamber 61 into two areas.

[0046] The suction tube 8 is located in the area at the upper end of the filter membrane 64.

[0047] By setting baffle 65 and filter membrane 64, activated carbon dust entering the sedimentation chamber 61 can be blocked, allowing the activated carbon dust to settle to the bottom of the sedimentation chamber 61 more quickly. At the same time, it can prevent activated carbon dust from entering the suction pipe 8 with the water flow when the suction pipe 8 is pumped out, thus preventing the activated carbon dust from flowing back. It can also prevent the backwash pump 7 from being subjected to a greater workload or damaged, ensuring the feasibility of reusing the water resources in the U-shaped sedimentation tank 6.

[0048] Furthermore, such as Figure 3As shown, the U-shaped sedimentation tank 6 has an opening on one side, and a material handling door 62 is closed inside the opening. The other side of the U-shaped sedimentation tank 6 has an opening for installing a filter membrane 64. An arc-shaped wall plate 63 adapted to the side wall of the U-shaped sedimentation tank 6 is closed at the opening. The inner side wall of the arc-shaped wall plate 63 is fixed to one end of the filter membrane 64, and the arc-shaped wall plate 63 forms a seal when the opening is closed.

[0049] With the material handling door 62 in place, after a period of use, staff can open the material handling door 62 to remove the accumulated activated carbon dust, which facilitates cleaning of the activated carbon dust and its secondary use. In addition, staff can also pull out the arc-shaped wall panel 63 to remove the filter membrane 64 and replace it, thus ensuring the effectiveness of the filter membrane 64 in blocking activated carbon dust.

[0050] It should be noted that the activated carbon in the activated carbon filter 2 is generally replaced every 2-3 months. Therefore, the activated carbon dust in the U-shaped sedimentation box 6 can be completely settled. When the activated carbon is replaced next time, the activated carbon dust that the suction pipe 8 can carry when it sucks water is limited. Therefore, the filter membrane 64 intercepts less activated carbon dust each time, allowing it to be used for a long time.

[0051] Furthermore, such as Figure 2 As shown, a water distribution plate 26 is fixed inside the activated carbon filter 2. The water distribution plate 26 is located in the upper part of the activated carbon filter 2. The water distribution plate 26 is connected to the water inlet pipe 21. Multiple evenly distributed water outlet holes are opened at the lower end of the water distribution plate 26.

[0052] The upper end of the backwash pipe 9 passes through the activated carbon filter 2 and is connected to the water distribution plate 26, so that the return water drawn from the U-shaped sedimentation box 6 can enter the water distribution plate 26, thereby evenly rinsing the (replaced) activated carbon.

[0053] Furthermore, such as Figure 2 As shown, a support filter plate 29 is fixed inside the activated carbon filter 2. The support filter plate 29 is located in the lower part of the activated carbon filter 2. Activated carbon particles 28 are filled above the support filter plate 29. Filter pads 27 are filled at both the upper and lower ends of the activated carbon particles 28. The filter pads 27 are made of sponge particles or quartz sand materials commonly used in the prior art. They are mainly used to intercept large organic particles, thereby achieving a good filtration effect.

[0054] A packing tube 23 and a discharge pipe 24 are also fixed on one side of the activated carbon filter 2. Both the packing tube 23 and the discharge pipe 24 are connected to the activated carbon filter 2. The packing tube 23 is located below the water distribution plate 26 and above the activated carbon filter 2. The lower end of the packing tube 23 is above the activated carbon particles 28. The discharge pipe 24 is located above the support filter plate 29 and below the activated carbon filter 2. The upper end of the discharge pipe 24 is above the filter pad 27 below.

[0055] Solenoid valves are also installed on the packing pipe 23 and the discharge pipe 24.

[0056] Workers can fill the activated carbon filter 2 with filter pad 27 and activated carbon particles 28 through the filler tube 23, and discharge the filter pad 27 and activated carbon particles 28 through the discharge tube 24, thereby replacing the activated carbon particles 28. The operation is convenient. Replacing activated carbon (i.e. activated carbon particles 28) is a routine operation for those skilled in the art in the prior art, and the specific steps will not be described in detail here.

[0057] like Figure 5 As shown, an industrial pure water preparation device includes the aforementioned industrial pure water preparation filtration mechanism, and further includes a quartz sand filter 1, an activated carbon filter 2, a precision filter 3, a reverse osmosis device 4, and a sterilization device 5. The quartz sand filter 1, activated carbon filter 2, precision filter 3, reverse osmosis device 4, and sterilization device 5 are connected sequentially by pipelines. The input end of the quartz sand filter 1 is connected to raw water, and the output end of the sterilization device 5 outputs industrial pure water. The required industrial pure water can be obtained through the treatment of the quartz sand filter 1, activated carbon filter 2, precision filter 3, reverse osmosis device 4, and sterilization device 5.

[0058] Example 2

[0059] refer to Figure 6 The filter mechanism for preparing industrial pure water shown has two baffles 65. The two baffles 65 are fixed to the inner top wall and the bottom wall of the sedimentation chamber 61, respectively. There is a gap between the other end of the two baffles 65 and the inner wall of the sedimentation chamber 61.

[0060] Among them, the upper end of the lower baffle 65 is also formed with an extension baffle 651, which extends horizontally.

[0061] By setting two baffles 65, the activated carbon powder entering the sedimentation chamber 61 can be intercepted more effectively, thereby reducing the amount of activated carbon powder entering below the filter membrane 64, thus reducing the workload of the filter membrane 64, allowing the filter membrane 64 to be used for a longer time and reducing maintenance costs.

[0062] Furthermore, such as Figure 6 As shown, a carbon block 66 is also fixed on the top wall of the sedimentation chamber 61 on the side of the baffle 65 away from the suction pipe 8. The carbon block 66 is a conical block with a larger diameter at the top and a smaller diameter at the bottom.

[0063] The surface of the carbon block 66 is fixed with densely distributed fluff 661.

[0064] The presence of carbonized blocks 66 helps to intercept activated carbon powder floating with the water flow and allows the activated carbon powder to be adsorbed onto the fibers 661, further reducing the probability of activated carbon powder entering below the filter membrane 64 and enabling the activated carbon powder to settle more quickly, resulting in better performance.

[0065] Furthermore, such as Figure 1 As shown, several vertically distributed guide plates 67 are fixed on the inner wall of the connection between the U-shaped sedimentation tank 6 and the drain pipe 25. The two adjacent guide plates 67 are symmetrically arranged, and the two guide plates 67 overlap at their tail ends in the vertical direction.

[0066] An impeller 68 is installed above the top guide plate 67. One side of the impeller 68 is located below the connection between the U-shaped sedimentation tank 6 and the drain pipe 25. The impeller 68 is rotatably connected to the inner wall of the U-shaped sedimentation tank 6.

[0067] With the design of the guide plate 67 and impeller 68, when the water carrying activated carbon enters the U-shaped sedimentation tank 6, it first impacts the impeller 68, causing it to rotate. The rotation of the impeller 68 consumes the power of the water flow, thus slowing down the falling water flow. Furthermore, the rotation of the impeller 68 itself reduces the impact force of the water flow on it, extending its service life. After being slowed down, the water flows onto the guide plate 67 and forms a Z-shaped flow within the U-shaped sedimentation tank 6 along multiple guide plates 67, further consuming the kinetic energy of the water flow. This allows the water entering the U-shaped sedimentation tank 6 to calm down more quickly, preventing turbulent water flow from hindering the sedimentation of activated carbon particles. Faster sedimentation allows the water in the U-shaped sedimentation tank 6 to be used more quickly for backflow rinsing. Therefore, workers can use the rapidly settled water for secondary or multiple backflow rinsing operations, further conserving water resources.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filtration mechanism for preparing industrial pure water, comprising an activated carbon filter (2), wherein the activated carbon filter (2) is connected to an inlet pipe (21) and an outlet pipe (22) at its upper and lower ends, respectively, characterized in that: The lower end of the activated carbon filter (2) is also connected to a drain pipe (25), and solenoid valves are installed on the inlet pipe (21), outlet pipe (22) and drain pipe (25); The lower end of the drain pipe (25) is fixedly connected to a U-shaped sedimentation tank (6), and a sedimentation chamber (61) is formed inside the U-shaped sedimentation tank (6). A backflushing pump (7) is installed at the end of the U-shaped sedimentation tank (6) away from the drain pipe (25). A suction pipe (8) is fixedly connected to the upper part of the end of the U-shaped sedimentation tank (6) away from the drain pipe (25). One end of the suction pipe (8) is connected to the input end of the backflushing pump (7). The output end of the backflushing pump (7) is fixedly connected to a backflushing pipe (9). The other end of the backflushing pipe (9) is connected to the upper end of the activated carbon filter (2). The lower end of the suction tube (8) extends to the lower part of the sedimentation chamber (61); A vertically arranged baffle (65) is fixed inside the sedimentation chamber (61). The lower end of the baffle (65) extends downward and its horizontal height is lower than the horizontal height of the lower end of the suction tube (8). A filter membrane (64) is snapped onto the lower end of the baffle (65) near the suction tube (8). One end of the filter membrane (64) extends to the side wall inside the sedimentation chamber (61). The baffle (65) and the filter membrane (64) fittings separate the sedimentation chamber (61) into two areas. The suction tube (8) is located in the area at the upper end of the filter membrane (64); The U-shaped sedimentation tank (6) has an opening on one side, and a material handling door (62) is closed inside the opening. The other side of the U-shaped sedimentation tank (6) has an opening for installing a filter membrane (64). An arc-shaped wall panel (63) adapted to the side wall of the U-shaped sedimentation tank (6) is closed at the opening. The inner side wall of the arc-shaped wall panel (63) is fixed to one end of the filter membrane (64), and the arc-shaped wall panel (63) forms a seal when the opening is closed. Two baffles (65) are provided. The two baffles (65) are fixed to the inner top wall and the bottom wall of the sedimentation chamber (61) respectively. There is a gap between the other end of the two baffles (65) and the inner wall of the sedimentation chamber (61). Among them, an extension baffle (651) is formed at the upper end of the lower baffle (65), and the extension baffle (651) extends horizontally; The inner top wall of the sedimentation chamber (61) is also fixed with a carbon block (66) on the side of the baffle (65) away from the suction pipe (8). The carbon block (66) is a conical block with a larger diameter at the top and a smaller diameter at the bottom. The surface of the carbonized block (66) is fixed with densely distributed villi (661).

2. The filtration mechanism for industrial pure water preparation according to claim 1, characterized in that: The activated carbon filter (2) is fixed with a water distribution plate (26). The water distribution plate (26) is located in the upper part of the activated carbon filter (2). The water distribution plate (26) is connected to the water inlet pipe (21). The lower end of the water distribution plate (26) is provided with multiple evenly distributed water outlet holes. The upper end of the backflush pipe (9) passes through the activated carbon filter (2) and is connected to the water distribution plate (26).

3. The filtration mechanism for industrial pure water preparation according to claim 2, characterized in that: The activated carbon filter (2) has a fixed support filter plate (29) inside. The support filter plate (29) is located in the lower part of the activated carbon filter (2). Activated carbon particles (28) are filled above the support filter plate (29). Filter pads (27) are filled at both the upper and lower ends of the activated carbon particles (28).

4. The filtration mechanism for industrial pure water preparation according to claim 3, characterized in that: The activated carbon filter (2) is also fixed with a packing tube (23) and a discharge pipe (24) on one side. The packing tube (23) and the discharge pipe (24) are both connected to the activated carbon filter (2). The packing tube (23) is located below the water distribution plate (26) and above the activated carbon filter (2). The lower end of the packing tube (23) is above the activated carbon particles (28). The discharge pipe (24) is located above the support filter plate (29) and below the activated carbon filter (2). The upper end of the discharge pipe (24) is above the filter pad layer (27) below. Solenoid valves are also installed on the packing pipe (23) and the discharge pipe (24).

5. The filtration mechanism for industrial pure water preparation according to claim 1, characterized in that: The inner wall of the connection between the U-shaped sedimentation tank (6) and the drain pipe (25) is fixed with several vertically distributed guide plates (67), and two adjacent guide plates (67) are symmetrically arranged, and the tail ends of two adjacent guide plates (67) overlap in the vertical direction. An impeller (68) is installed above the uppermost guide plate (67). One side of the impeller (68) is located below the connection between the U-shaped sedimentation tank (6) and the drain pipe (25). The impeller (68) is rotatably connected to the inner wall of the U-shaped sedimentation tank (6).

6. An industrial pure water preparation apparatus, comprising a filtration mechanism for industrial pure water preparation as described in any one of claims 1-5, characterized in that: The device includes a quartz sand filter (1), an activated carbon filter (2), a precision filter (3), a reverse osmosis device (4), and a sterilization device (5). The quartz sand filter (1), activated carbon filter (2), precision filter (3), reverse osmosis device (4), and sterilization device (5) are connected in sequence through pipelines. The input end of the quartz sand filter (1) is connected to raw water, and the output end of the sterilization device (5) outputs industrial pure water.

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