Hydrogen peroxide filtering device and filtering process

Abstract

The invention relates to the technical field of filtering devices, and particularly discloses a hydrogen peroxide filtering device and a filtering technology.The hydrogen peroxide filtering device comprises an outer cylinder and a filtering cylinder, the filtering cylinder is fixedly assembled on the inner side of the outer cylinder, a water distribution pipe body is fixedly assembled in the filtering cylinder, and a rotating rod is movably arranged in the water distribution pipe body; water baffles are symmetrically arranged in the upper section, the middle section and the lower section of the filter cartridge, a plurality of water diversion grooves are formed in the pipe wall of the water diversion pipe body, a plurality of first water diversion rings and second water diversion rings are arranged on the rotating rod, and the first water diversion rings and the second water diversion rings can rotate along with the rotating rod; the water distribution pipe body is matched with the water distribution tank and the water baffle to always keep one side of a certain section of the filter cartridge communicated with the interior of the water distribution pipe body; according to the hydrogen peroxide filtering device, through cooperation of the rotating rod, the water distribution pipe, the first water distribution ring and the second water distribution ring, it is guaranteed that all the filtering layers of the filtering cylinder can evenly receive water flow, and the filtering material blocking rate is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering devices, in particular to a hydrogen peroxide filtering device and filtering process. BACKGROUND

[0002] Hydrogen peroxide (hydrogen peroxide solution) as an important chemical raw material and disinfectant, is widely used in the fields of medicine, electronics, food processing, etc., and its purity directly affects the product quality and safety. In the production and purification process of hydrogen peroxide, although the initial filtration process can remove most of the suspended impurities, there will still be trace amounts of particles, colloids and other pollutants remaining, which need to be further purified by deep filtration. At present, the industry uses the process mode of "filter cartridge and negative pressure discharge" for deep filtration of hydrogen peroxide after initial filtration, that is, using the filter cartridge to intercept impurities, and at the same time, the negative pressure of the discharge pipe is used to accelerate the discharge of the filtered hydrogen peroxide.

[0003] In the traditional device, the filter cartridge is usually provided with a water distributor to realize segmented water feeding along the axial direction, but the negative pressure source of the discharge pipe is usually fixed in the middle or a certain area of the outer cylinder. Even if the water distributor can uniformly distribute hydrogen peroxide to each segment of the filter cartridge, the unfiltered hydrogen peroxide will still flow preferentially to the filter cartridge area close to the negative pressure port under the driving of negative pressure, resulting in a large difference in the actual filtration load borne by different areas of the filter cartridge. The flow rate of the filter segment close to the negative pressure port is fast, and the intercepted impurities are concentrated, while the filter segment far from the negative pressure port is in a low load state, and the filter material utilization rate is insufficient, which shortens the filter cartridge replacement cycle and increases the production cost. SUMMARY

[0004] The present application provides a hydrogen peroxide filtering device and filtering process, aiming to solve the problem in the related art that hydrogen peroxide still flows preferentially to the filter cartridge area close to the discharge port under the influence of negative pressure when the water distributor is in action.

[0005] The hydrogen peroxide filtering device of the present application comprises an outer cylinder and a filter cartridge, the filter cartridge is fixedly assembled on the inner side of the outer cylinder, a water distribution pipe body is fixedly assembled inside the filter cartridge, and a rotating shaft is movably arranged inside the water distribution pipe body, which can rotate and vertically slide relative to the filter cartridge; A water baffle is symmetrically arranged inside the upper segment, middle segment and lower segment of the filter cartridge for separating the inner cavity of the filter cartridge, a water distribution groove is formed on the pipe wall of the water distribution pipe body, a plurality of water distribution grooves are arranged equidistantly along the length direction of the water distribution pipe body and are annularly and uniformly distributed on the outer periphery of the water distribution pipe body for connecting the inside of the filter cartridge and the inside of the water distribution pipe body; A plurality of water distribution rings one and two are arranged on the rotating shaft, the water distribution ring one is located inside the middle segment of the filter cartridge, the water distribution ring two is located inside the upper segment and lower segment of the filter cartridge, the water distribution ring one and two can rotate with the rotating shaft, and cooperate with the water distribution groove and the water baffle to keep only one side of a certain segment of the filter cartridge connected with the inside of the water distribution pipe body at all times; The lifting of the rotating rod relative to the filter cartridge can drive the lifting of the water distribution ring I and the water distribution ring II and the rotation of the baffle relative to the filter cartridge, so that all the water distribution grooves are fully opened and the backflushing liquid can flow freely in the filter cartridge.

[0006] Preferably, the outer part of the water distribution pipe body is fixedly connected with two baffles, which are used to divide the filter cartridge into upper, middle and lower sections.

[0007] Preferably, the water distribution ring I is provided with a through groove I and a through groove II, and the water distribution ring II is provided with a through groove III and a through groove IV, and the through grooves I, II, III and IV are all communicated with the water distribution grooves.

[0008] Preferably, the outer side of the rotating rod is sleeved with a sliding groove sleeve corresponding to the water baffle, the sliding groove sleeve is single degree of freedom and slides along the length direction of the rotating rod, the outer side of the sliding groove sleeve is threadedly connected with a rotating sleeve, a connecting rod is arranged between the water baffle and the sliding groove sleeve, one end of the connecting rod is hinged to the rotating sleeve, and the other end of the connecting rod is arranged in the water distribution pipe body and slidably assembled in the water baffle.

[0009] Preferably, the middle part of the outer circumferential surface of the outer cylinder is provided with a discharge pipe which is communicated with the inner cavity of the outer cylinder and is used to discharge the filtered hydrogen peroxide, the discharge pipe is further provided with a backflushing pipe, the top of the outer cylinder is fixedly provided with an end cover, the top of the end cover is provided with a feeding pipe which is used to feed the unfiltered hydrogen peroxide into the device, and the feeding pipe is further provided with a backflushing discharge pipe.

[0010] Preferably, the lower part of the outer cylinder is fixedly provided with a motor I, a bevel gear is fixedly connected to the driving shaft of the motor I, and the bottom of the outer cylinder is provided with a bevel gear sleeve which is meshed with the bevel gear.

[0011] Preferably, the bottom of the outer cylinder is provided with a square rod, the rotating rod is arranged in the inner wall of the bottom of the outer cylinder and is fixedly connected with the square rod, the bevel gear sleeve is sleeved on the outer part of the square rod, and the bottom of the square rod is fixedly connected with a horizontal groove plate.

[0012] Preferably, the lower part of the outer cylinder is further fixedly provided with a motor II, an eccentric rod is fixedly connected to the driving end of the motor II, and the eccentric rod is arranged in the groove body of the horizontal groove plate.

[0013] A filtering process of hydrogen peroxide, comprising the following steps: S1: feeding the hydrogen peroxide into the water distribution pipe body, the hydrogen peroxide enters each section and each side of the filter cartridge in sequence, is filtered from the inner side to the outer side of the filter cartridge, and is discharged from the discharge pipe; S2: when the filter cartridge is blocked due to long-time filtering, the backflushing pipe is connected with backflushing water, the water distribution ring I and the water distribution ring II are lifted to open all the water distribution grooves, the water baffle is rotated, the filter cartridge is backflushed, and the backflushing liquid is discharged through the backflushing discharge pipe; S3: Close the backflush related valves, reset the water distribution ring one, water distribution ring two and the water baffle, check the component state, and prepare for the next filtration.

[0014] The beneficial effects of the present application are: I. In use, through the coordinated cooperation of the rotating rod, the water distribution pipe and the water distribution ring one and the water distribution ring two, only one side of a certain section of the filter cartridge is always connected with the inside of the water distribution pipe, combined with the blocking effect of the water baffles in each section of the filter cartridge, the cross-regional flow of hydrogen peroxide in the filter cartridge section is completely blocked, the filtered hydrogen peroxide is forced to penetrate in the mode of segmented single side in sequence, ensuring that the filter layer of the filter cartridge can uniformly receive water flow, avoiding the situation of excessive accumulation of impurities in a single area caused by local flow concentration due to negative pressure of the discharge pipe, significantly reducing the plugging rate of filter material, prolonging the backflush time interval, and indirectly improving the production efficiency.

[0015] II. By making the water distribution ring one and the water distribution ring two disengage from the cooperation position with the water distribution tank, all the water distribution tanks can be completely opened, the backflush liquid can pass through the water distribution tank into the entire space of the upper section, middle section and lower section of the filter cartridge without obstruction, the rotation of the water baffle can break the space separation in the filter cartridge section, so that the backflush liquid can flow freely on both sides of each section of the filter cartridge, forming a dead corner-free penetration from the outside to the inside of the filter cartridge, ensuring that the backflush liquid can uniformly act on each area of the filter layer of the filter cartridge. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective structural schematic diagram of the present application.

[0017] Figure 2 is a front view structural schematic diagram of the present application.

[0018] Figure 3 is a right view structural schematic diagram of the present application.

[0019] Figure 4 is a structural schematic diagram of the driving assembly one and the driving assembly two of the present application.

[0020] Figure 5 is a structural schematic diagram of the filter cartridge of the present application.

[0021] Figure 6 is a structural schematic diagram of the water distribution pipe of the present application.

[0022] Figure 7 is a structural schematic diagram of the rotating rod of the present application.

[0023] Figure 8 is a front view structural schematic diagram of the water distribution pipe of the present application.

[0024] Figure 9 is Figure 8 the A-A sectional view shown.

[0025] Figure 10 is Figure 8 the B-B cross-sectional view shown in the figure.

[0026] Figure 11 is a structural schematic diagram of the transmission assembly of the present application.

[0027] Figure 12 is a structural schematic diagram of the water distribution ring one of the present application.

[0028] Figure 13 is a structural schematic diagram of the water distribution ring two of the present application.

[0029] Reference signs: 10, outer cylinder; 101, discharge pipe; 11, end cover; 111, inlet pipe; 20, driving assembly one; 201, motor one; 202, bevel gear; 203, bevel gear sleeve; 21, driving assembly two; 211, motor two; 212, eccentric rod; 22, square rod; 221, transverse slot plate; 30, filter cylinder; 40, water distribution pipe; 401, water distribution pipe body; 402, water distribution groove; 41, water guide part; 42, partition plate; 50, rotating rod; 51, water distribution ring one; 511, through groove one; 512, through groove two; 52, water distribution ring two; 521, through groove three; 522, through groove four; 60, transmission assembly; 601, sliding slot sleeve; 602, rotating sleeve; 603, connecting rod; 61, water baffle. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] As Figures 1 to 13As shown, the hydrogen peroxide filtering device of the present application comprises an outer cylinder 10, a driving assembly one 20, a driving assembly two 21, a filter cartridge 30, a water distribution pipe 40 and a rotating rod 50, the driving assembly one 20 and the driving assembly two 21 are arranged below the outer cylinder 10, the filter cartridge 30 is fixedly installed inside the outer cylinder 10, the water distribution pipe 40 is fixedly assembled inside the filter cartridge 30, and the outer cylinder 10, the filter cartridge 30, the water distribution pipe 40 and the rotating rod 50 are coaxially arranged, the filter cartridge 30 is divided into an upper section, a middle section and a lower section by the water distribution pipe 40, the rotating rod 50 is movably arranged inside the water distribution pipe 40 and can rotate and vertically slide relative to the water distribution pipe 40 under the driving of the driving assembly one 20 and the driving assembly two 21, the rotating rod 50 is provided with a water distribution ring one 51 and a water distribution ring two 52, and when the rotating rod 50 rotates, the water distribution ring one 51 and the water distribution ring two 52 can cooperate with the water distribution pipe 40 to make the hydrogen peroxide always filtered from only one side of each section of the filter cartridge 30, and when the filter cartridge 30 is back-flushed, the rotating rod 50 is lifted to avoid the water distribution ring one 51 and the water distribution ring two 52 from blocking the back-flushing liquid.

[0032] As shown, Figures 1 to 3 The middle part of the outer periphery of the outer cylinder 10 is provided with a discharge pipe 101, the discharge pipe 101 is communicated with the inner cavity of the outer cylinder 10, the end of the discharge pipe 101 away from the outer cylinder 10 is further provided with a negative pressure pump for discharging the filtered hydrogen peroxide from the device through the discharge pipe 101, the discharge pipe 101 is provided with a back-flushing water pipe for back-flushing the filter cartridge 30, and the discharge pipe 101 and the back-flushing water pipe are both provided with valves, and the valve on the discharge pipe 101 and the valve on the back-flushing water pipe will not be opened at the same time under any working condition of the device, so as to ensure that the qualified hydrogen peroxide is stably discharged in the filtering stage and the back-flushing water pressure is concentrated on the filter cartridge 30 in the back-flushing stage to realize efficient cleaning.

[0033] The top of the outer cylinder 10 is fixedly assembled with an end cover 11, the top of the end cover 11 is provided with an inlet pipe 111, the inlet pipe 111 is communicated with the inner cavity of the end cover 11, the end of the inlet pipe 111 away from the end cover 11 is further provided with a pressure pump for feeding the unfiltered hydrogen peroxide into the device, the inlet pipe 111 is provided with a back-flushing discharge pipe for discharging the back-flushing liquid from the device, and the inlet pipe 111 and the back-flushing discharge pipe are both provided with valves, and the valve on the inlet pipe 111 and the valve on the back-flushing discharge pipe will not be opened at the same time under any working condition of the device, so as to ensure that the material is accurately conveyed in the filtering stage and the cleaning is efficient and orderly in the back-flushing stage, and the process interference is avoided.

[0034] As shown, Figure 1 and Figure 4As shown, the driving assembly one 20 includes a motor one 201, a bevel gear 202 and a bevel gear sleeve 203, the motor one 201 is fixedly installed below the outer cylinder 10, the bevel gear 202 is fixedly connected to the driving shaft of the motor one 201, the bevel gear sleeve 203 is rotatably arranged at the bottom of the outer cylinder 10, the bevel gear 202 is engaged with the bevel gear sleeve 203, the motor one 201 can drive the bevel gear 202 to rotate, and then drive the bevel gear sleeve 203 to rotate relative to the outer cylinder 10.

[0035] The bottom of the outer cylinder 10 is provided with a square rod 22, the top end of the square rod 22 is fixedly connected to the bottom end of the rotating rod 50, and the bevel gear sleeve 203 is slidably sleeved outside the square rod 22, the rotation of the bevel gear sleeve 203 can drive the square rod 22 to rotate, so that the rotating rod 50 rotates, and then drives the water distribution ring one 51 and the water distribution ring two 52 to rotate, cooperates with the water distribution pipe 40 to make the hydrogen peroxide uniformly filtered from each section of the filter cartridge 30, and the outer periphery of the outer cylinder 10 is also provided with mounting ears, which facilitates the installation of the filter device.

[0036] The driving assembly two 21 includes a motor two 211 and an eccentric rod 212, the motor two 211 is fixedly arranged below the outer cylinder 10, the eccentric rod 212 is fixedly connected to the driving end of the motor two 211, and the motor can drive the eccentric rod 212 to rotate around the axis of the motor two 211, the bottom of the square rod 22 is fixedly connected with a transverse groove plate 221, the eccentric rod 212 penetrates the groove body of the transverse groove plate 221, and when the eccentric rod 212 rotates, it can drive the transverse groove plate 221 to lift upward, forcing the square rod 22 to lift the rotating rod 50 to facilitate backflushing of the filter plate.

[0037] As shown in Figure 2 , Figure 3 and Figure 5 , the filter cartridge 30 abuts between the bottom inner wall of the outer cylinder 10 and the end cover 11, and a sealing gasket is arranged at the abutting portion to prevent leakage of hydrogen peroxide during filtration, and the hydrogen peroxide is filtered from the inside of the filter cartridge 30 to the outside of the filter cartridge 30, and the filter layer of the filter cartridge 30 is a prior art which will not be described here.

[0038] As shown in Figure 6 , Figure 8 and Figure 9 , the water distribution pipe 40 includes a water distribution pipe body 401 and a water distribution groove 402, the water distribution pipe body 401 is fixedly assembled inside the filter cartridge 30, the water distribution groove 402 is provided with a plurality of water distribution grooves, which are equidistantly arranged along the length direction of the water distribution pipe body 401 and are annularly distributed on the outer periphery of the water distribution pipe body 401, and the hydrogen peroxide to be filtered flows from the inside of the water distribution pipe body 401 to the inside of the filter cartridge 30 through the water distribution grooves 402 for filtration.

[0039] The top of the water distribution pipe body 401 is provided with a water guide part 41, which can guide the hydrogen peroxide water to be filtered to enter the inside of the water distribution pipe body 401. The outside of the water distribution pipe body 401 is fixedly connected with two partitions 42, which can divide the filter cartridge 30 into an upper section, a middle section and a lower section. A sealing ring is arranged between the outer circumferential surface of the partition 42 and the inner wall of the filter cartridge 30, which can fill the assembly gap between the partition 42 and the inner wall of the filter cartridge 30, and prevent the hydrogen peroxide water from flowing between the upper section, the middle section and the lower section of the filter cartridge 30 during the filtering process.

[0040] As shown in Figure 7 , Figure 10 and Figure 11 , the rotating rod 50 is arranged in the bottom of the outer cylinder 10 and is fixedly connected with the square rod 22. A sealing ring is arranged between the rotating rod 50 and the cylinder wall of the outer cylinder 10 to prevent the hydrogen peroxide water from leaking. The top of the rotating rod 50 is conical, which facilitates the water to be filtered to enter the inside of the water distribution pipe 40.

[0041] The rotating rod 50 is provided with a plurality of water distribution rings I 51 and water distribution rings II 52. The water distribution ring I 51 is located inside the middle section of the filter cartridge 30, and the water distribution ring II 52 is located inside the upper section and the lower section of the filter cartridge 30. The water distribution ring I 51 is provided with a through groove I 511 and a through groove II 512, and the water distribution ring II 52 is provided with a through groove III 521 and a through groove IV 522. The through groove I 511, the through groove II 512, the through groove III 521 and the through groove IV 522 can be communicated with the water distribution groove 402. When the rotating rod 50 rotates to drive the water distribution ring I 51 and the water distribution ring II 52 to rotate, one of the through groove I 511, the through groove II 512, the through groove III 521 and the through groove IV 522 is always communicated with the water distribution groove 402. That is, when one side of the middle section of the filter cartridge 30 is communicated with the inside of the water distribution pipe body 401, the other side of the middle section of the filter cartridge 30, the upper section and the lower section of the filter cartridge 30 are not communicated with the inside of the water distribution pipe body 401. Similarly, when one side of the upper section and the lower section of the filter cartridge 30 is communicated with the inside of the water distribution pipe body 401, the other side of the upper section and the lower section of the filter cartridge 30, the middle section of the filter cartridge 30 are not communicated with the inside of the water distribution pipe body 401. During the filtering of the hydrogen peroxide water, the hydrogen peroxide water to be filtered enters the two sides of the middle section and the upper section and the lower section of the filter cartridge 30 in turn, which avoids the problem of local flow concentration or uneven filtering caused by the simultaneous entry of multiple sections, and makes the hydrogen peroxide water be filtered uniformly in each section of the filter cartridge 30.

[0042] As shown in Figures 6 to 11 , the upper section, the middle section and the lower section of the filter cartridge 30 are each provided with two water baffles 61, which are rotationally arranged between the inner wall of the filter cartridge 30 and the outer wall of the water distribution pipe body 401. The water baffles 61 are used to prevent the hydrogen peroxide water to be filtered from flowing to the other side of the section after entering one side of the section, so as to ensure that each side of each section of the filter cartridge 30 can withstand stable and uniform water flow pressure in different working time periods, make the impurities uniformly distributed on the filter cartridge 30, delay local blockage and improve the overall filter material utilization rate.

[0043] The rotating rod 50 is provided with a transmission assembly 60 matched with the baffle 61. The transmission assembly 60 includes a sliding groove sleeve 601, a rotating sleeve 602, and a connecting rod 603. The sliding groove sleeve 601 is sleeved outside the rotating rod 50 and is single degree of freedom to slide along the length direction of the rotating rod 50. The rotating sleeve 602 is threadedly connected outside the sliding groove sleeve 601 and can rotate with the lifting of the sliding groove sleeve 601. One end of the connecting rod 603 is hinged to the rotating sleeve 602, and the other end is arranged in the water distribution pipe body 401 and slidably assembled in the baffle 61. When the filter cartridge 30 is back-flushed, the rotating rod 50 is lifted upward to drive the sliding groove sleeve 601 to lift. The sliding groove on the sliding groove sleeve 601 makes the rotating sleeve 602 rotate, thereby changing the position of the hinged end of the connecting rod 603 and the angle with the inner wall of the water distribution pipe body 401. The other end slides in the baffle 61 to drive the baffle 61 to rotate, so that the two sides of each section of the filter cartridge 30 are communicated. When the filter plate is back-flushed, the contact area between the baffle 61 and the filter cartridge 30 does not block the back-flushed liquid. At the same time, the lifting of the rotating rod 50 drives the lifting of the water distribution ring one 51 and the water distribution ring two 52, so as to avoid the blocking of the water distribution ring one 51 and the water distribution ring two 52 to the water distribution groove 402. All the water distribution grooves 402 are communicated with the inside of the water distribution pipe 40.

[0044] It should be noted that the groove for the angle change of the connecting rod 603 is provided with a diaphragm between the connecting rod 603 and the groove, so as to avoid the cross flow of hydrogen peroxide. The materials of the device components are not affected by the properties of hydrogen peroxide, including but not limited to stainless steel, hastelloy, PTFE, and PFA.

[0045] A hydrogen peroxide filtering process includes the following steps: S1: Prepare the hydrogen peroxide to be filtered, ensure that the purity, concentration and other parameters meet the requirements of the filtering process, avoid affecting the filtering effect due to abnormal initial state of the material, open the valve on the inlet pipe 111, start the pressurizing pump, and deliver the hydrogen peroxide to be filtered to the inside of the outer cylinder 10 through the inlet pipe 111. Under the action of pressure, the hydrogen peroxide is guided through the water guide part 41 at the top of the water distribution pipe 40, and enters the inside of the water distribution pipe body 401 of the water distribution pipe 40. At this time, the valve on the backflushing discharge pipe remains closed to avoid the loss of hydrogen peroxide from the backflushing discharge pipe, and the motor one 201 drives the bevel gear 202 to rotate, which drives the meshing bevel gear sleeve 203 to rotate, and the bevel gear sleeve 203 drives the externally sleeved square rod 22 to rotate, thereby making the rotating rod 50 rotate inside the water distribution pipe 40. When the rotating rod 50 rotates, the water distribution ring one 51 and the water distribution ring two 52 on it rotate synchronously. The through grooves one 511 and two 512 on the water distribution ring one 51 and the through grooves three 521 and four 522 on the water distribution ring two 52 will be communicated with the water distribution grooves 402 on the water distribution pipe body 401 of the water distribution pipe 40 in turn. When a through groove is communicated with a water distribution groove 402, the hydrogen peroxide inside the water distribution pipe body 401 flows to the inside of the corresponding section (upper section, middle section, lower section) of the filter cartridge 30 through the water distribution groove 402, and always keeps only one side of a section of the filter cartridge 30 communicated with the inside of the water distribution pipe body 401, realizing that the hydrogen peroxide enters each section of the filter cartridge 30 in turn in a segmented manner, avoiding the concentration of local flow and uneven filtration caused by the simultaneous entry of multiple sections. The hydrogen peroxide penetrates and filters from the inside to the outside of the filter cartridge 30, and the filter layer of the filter cartridge 30 retains impurities, and the filtered hydrogen peroxide enters the chamber between the outer cylinder 10 and the filter cartridge 30. At the same time, the water baffle 61 (rotatably arranged between the inner wall of the filter cartridge 30 and the outer wall of the water distribution pipe body 401) in each section of the filter cartridge 30 prevents the hydrogen peroxide from flowing to the other side of the section after entering one side of the section, ensuring that each section and each side of the filter cartridge 30 bears stable and uniform water flow pressure, making the impurities uniformly distributed on the filter cartridge 30, delaying local blockage, and improving the utilization rate of filter material. Open the valve on the discharge pipe 101, start the negative pressure pump, and the filtered hydrogen peroxide in the chamber between the outer cylinder 10 and the filter cartridge 30 is discharged from the discharge pipe 101 under the action of negative pressure. At this time, the valve on the backflushing water pipe remains closed to prevent external water sources from entering and affecting the purity of the hydrogen peroxide.

[0046] S2: continue to run the drive assembly for 20, keep the rotating rod 50 stable rotation, ensure that the hydrogen peroxide is continuously segmented uniform filtration. Regular sampling detection of the purity of the filtered hydrogen peroxide, compared with the initial set standard, if the purity decreases to the threshold, it is judged that the filter cartridge 30 impurity retention capacity has reached a certain degree, the valve on the inlet pipe 111 and the pressure pump need to be closed, the delivery of the filtered hydrogen peroxide is stopped, the valve on the discharge pipe 101 and the negative pressure pump need to be closed, the discharge of the filtered hydrogen peroxide is stopped. Start motor two 211 to drive eccentric rod 212 to rotate, with the rotation of eccentric rod 212, transverse groove plate 221 is lifted upward, and then drives square rod 22 and rotating rod 50 to slide vertically upward. In the lifting process of rotating rod 50, the water distribution ring one 51 and the water distribution ring two 52 are synchronously lifted to make them separate from the matching position of the water distribution groove 402 of the water distribution pipe 40, so as to avoid the water distribution ring blocking the backflushing liquid. At the same time, the rotating rod 50 drives the sliding groove sleeve 601 outside the sleeve to lift, the sliding groove on the sliding groove sleeve 601 makes the threaded connection rotating sleeve 602 rotate, the rotating sleeve 602 drives the position and angle of one end of the connecting rod 603 to change, the other end of the connecting rod 603 is sleeved in the water distribution pipe body 401 and slides inside the water baffle 61, drives the water baffle 61 to rotate, so that the two sides of each section of the filter cartridge 30 are connected, preventing the water baffle 61 from blocking the backflushing liquid in the contact area with the filter cartridge 30. Open the valve on the backflushing water pipe, and the clean water source is introduced. The backflushing water source enters the chamber between the outer cylinder 10 and the filter cartridge 30 under the action of pressure, and then penetrates from the outside to the inside of the filter cartridge 30, backflushing the filter layer of the filter cartridge 30 to wash the impurities trapped on the filter cartridge 30. Open the valve on the backflushing discharge pipe, and the backflushing liquid carrying the washed impurities is discharged from the backflushing discharge pipe through the inside of the filter cartridge 30, the water distribution pipe body 401 of the water distribution pipe 40, the inlet pipe 111. Continue backflushing for a period of time, and observe the turbidity of the backflushing discharge liquid during the period. When the clarity of the discharge liquid approaches that of the clean water source, it is judged that the backflushing cleaning is completed.

[0047] S3: close the valves on the backflushing water pipe and the backflushing discharge pipe, stop the delivery and discharge of the backflushing liquid. Motor two 211 drives transverse groove plate 221 to reset, drives square rod 22 and rotating rod 50 to fall back to the initial position, water distribution ring one 51 and water distribution ring two 52 correspond to water distribution groove 402 again, water baffle 61 is restored to the initial state under the drive of connecting rod 603, and the communication between the two sides of each section of filter cartridge 30 is blocked. Check the state of each part of the device, confirm that the rotating rod 50, the water distribution ring, the water baffle 61, etc. are reset normally, there is no jamming or misalignment, and prepare for the next round of filtration.

[0048] In the description of the application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0049] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0050] Although the embodiments of the application have been shown and described above, it is to be understood that the above-described embodiments are exemplary and cannot be construed as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the application.

Claims

1. A hydrogen peroxide filtration device, comprising: The outer cylinder (10) and the filter cylinder (30) are fixedly assembled inside the outer cylinder (10). The filter cylinder (30) is characterized in that a water distribution pipe body (401) is fixedly assembled inside the filter cylinder (30), and a rotating rod (50) is movably arranged inside the water distribution pipe body (401), which can rotate and slide vertically relative to the filter cylinder (30). The filter cylinder (30) is symmetrically equipped with baffles (61) in the upper, middle and lower sections to vertically separate the inner cavity of the filter cylinder (30). A water distribution groove (402) is opened on the pipe wall of the water distribution pipe body (401). Several water distribution grooves (402) are provided and are equidistant along the length of the water distribution pipe body (401) and are evenly distributed in a ring around the outer periphery of the water distribution pipe body (401) to connect the inside of the filter cylinder (30) and the inside of the water distribution pipe body (401). The rotating rod (50) is provided with several water-dividing rings 1 (51) and 2 (52). The water-dividing ring 1 (51) is located inside the middle section of the filter cylinder (30), and the water-dividing ring 2 (52) is located inside the upper and lower sections of the filter cylinder (30). The water-dividing ring 1 (51) and the water-dividing ring 2 (52) can rotate with the rotating rod (50) and cooperate with the water-dividing groove (402) and the baffle plate (61) so that the filter cylinder (30) always maintains that only one side of a certain section is connected to the inside of the water-dividing pipe body (401). The rotating rod (50) is raised relative to the filter cylinder (30), which can drive the first water distribution ring (51) and the second water distribution ring (52) to rise and drive the partition plate (42) to rotate relative to the filter cylinder (30), so that the water distribution tank (402) is fully open and the backwash liquid flows freely inside the filter cylinder (30).

2. The hydrogen peroxide filtration device according to claim 1, characterized in that, The water distribution pipe body (401) is externally fixedly connected to two partitions (42) for dividing the filter cartridge (30) into an upper section, a middle section and a lower section.

3. The hydrogen peroxide filtration device according to claim 1, characterized in that, The water distribution ring 1 (51) is provided with a through groove 1 (511) and a through groove 2 (512), and the water distribution ring 2 (52) is provided with a through groove 3 (521) and a through groove 4 (522). The through groove 1 (511), through groove 2 (512), through groove 3 (521) and through groove 4 (522) can all communicate with the water distribution groove (402).

4. The hydrogen peroxide filtration device according to claim 1, characterized in that, The outer side of the rotating rod (50) is fitted with a sliding sleeve (601) corresponding to the baffle plate (61). The sliding sleeve (601) slides along the length of the rotating rod (50) with a single degree of freedom. The outer side of the sliding sleeve (601) is threaded with a rotating sleeve (602). A connecting rod (603) is provided between the baffle plate (61) and the sliding sleeve (601). One end of the connecting rod (603) is hinged to the rotating sleeve (602), and the other end passes through the water distribution pipe body (401) and is slidably assembled inside the baffle plate (61).

5. The hydrogen peroxide filtration device according to claim 1, characterized in that, A discharge pipe (101) is provided in the middle of the outer circumference of the outer cylinder (10), and the discharge pipe (101) is connected to the inner cavity of the outer cylinder (10) for discharging the filtered hydrogen peroxide from the device. A backflushing water pipe is also provided on the discharge pipe (101). An end cap (11) is fixedly installed on the top of the outer cylinder (10). An inlet pipe (111) is provided on the top of the end cap (11) for feeding unfiltered hydrogen peroxide into the device. A backflushing discharge pipe is also provided on the inlet pipe (111).

6. The hydrogen peroxide filtration device according to claim 1, characterized in that, A motor (201) is fixedly installed below the outer cylinder (10). A bevel gear (202) is fixedly connected to the drive shaft of the motor (201). A bevel sleeve (203) is provided at the bottom of the outer cylinder (10), and the bevel gear (202) and the bevel sleeve (203) mesh with each other.

7. A hydrogen peroxide filtration device according to claim 6, characterized in that, The bottom of the outer cylinder (10) is provided with a square rod (22), the rotating rod (50) passes through the bottom inner wall of the outer cylinder (10) and is fixedly connected to the square rod (22), and the conical sleeve (203) is slidably sleeved on the outside of the square rod (22), and the bottom of the square rod (22) is fixedly connected with a transverse groove plate (221).

8. A hydrogen peroxide filtration device according to claim 7, characterized in that, A second motor (211) is also fixedly installed below the outer cylinder (10). An eccentric rod (212) is fixedly connected to the drive end of the second motor (211). The eccentric rod (212) passes through the groove of the transverse slot plate (221).

9. A hydrogen peroxide filtration process, applicable to the hydrogen peroxide filtration device described in claim 8, characterized in that, Includes the following steps: S1: Hydrogen peroxide is fed into the water distribution pipe (401). The hydrogen peroxide enters each section and side of the filter cartridge (30) in sequence, is filtered from the inside to the outside of the filter cartridge (30), and is discharged from the device through the discharge pipe (101). S2: When the filter cartridge (30) becomes clogged due to prolonged filtration, backwash water is introduced through the backwash water pipe, the water distribution ring one (51) and water distribution ring two (52) are raised to open all water distribution tanks (402), the baffle plate (61) is rotated to backwash the filter cartridge (30) and discharge it through the backwash discharge pipe. S3: Close the backwash valves, reset the water distribution ring 1 (51), water distribution ring 2 (52) and baffle plate (61), check the status of the components, and prepare for the next filtration.

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