A filter for regenerating working fluid of hydrogen peroxide device

Abstract

The present invention discloses a filter for regenerating working fluid of a hydrogen peroxide device, and relates to the field of chemical engineering technology. During the long-term operation of a traditional filter, as the filtering process continues, impurities will gradually adhere to and accumulate on one side of the filter screen. The subsequent decline in filtering effect means that more impurities may enter the subsequent production links, thereby affecting product quality. The present invention solves the problems of blockage and decline in filtering effect of traditional filter screens through backwashing, ensures production continuity, reduces production costs, simplifies equipment and operation procedures, and is conducive to large-scale promotion. In the filter assembly, filters of different apertures realize graded filtration and improve the overall filtering effect. The spiral sheet in the conduction assembly ensures smooth conduction of the embedded plug. The horn block and the embedded plug structure can control the water flow velocity to improve the impurity removal effect. The first filter screen uses the reset spring to use the water flow impact vibration to prevent pore blockage and maintain stable filtering performance.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering, in particular to a filter for regenerating working fluid of a hydrogen peroxide device. Background Art

[0002] In many industrial fields, such as chemical, pharmaceutical, and food processing, filtration technology is a key link to ensure product quality, protect equipment, and meet production process requirements. Take the hydrogen peroxide device in the chemical industry as an example. During the production process, the working fluid needs to be kept highly pure. If the impurities in it are not effectively removed, it will affect the stability of the entire production process, product quality, and the service life of the equipment.

[0003] In this regard, patent CN219308041U discloses a filter structure for preparing hydrogen peroxide. After the filter has been used for a long time, the filter frame can be moved upward by a driving device, and the filter screen can be moved from the inside of the device. The rotating brush rod can be moved left and right and forward and backward to clean the surfaces of the coarse filter screen and the fine filter screen. The operation process is very convenient and saves time and effort, thereby improving the overall working efficiency.

[0004] During the long-term operation of traditional filters, as the filtration process continues, impurities will gradually adhere to and accumulate on one side of the filter. For example, in the filtration system of a hydrogen peroxide device, particulate impurities and degradation products in the working fluid will be intercepted by the filter. After a certain filtration cycle, a large amount of impurities will adhere to the surface of the filter. The adhesion of such impurities will cause a series of problems. For situations such as hydrogen peroxide production where the purity of the working fluid is extremely high, the decline in filtration effect means that more impurities may enter the subsequent production links, thereby affecting product quality.

[0005] In view of the above problems, a filter for regenerating working fluid of a hydrogen peroxide device is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a filter for regenerating working fluid of a hydrogen peroxide device, which solves the problem of impurities affecting filtration in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a filter for regenerating working fluid of a hydrogen peroxide device, comprising a filter vessel, an electric push rod is installed at the top of the filter vessel, a collection base is wrapped on the outer surface of the filter vessel, and the collection base is used to combine multiple groups of filter vessels together, a circulation pipe is embedded in one side of the filter vessel, a liquid inlet is arranged at the top of the circulation pipe, and the liquid inlet is used to guide the working fluid, a recoil pipe is embedded in the other side of the filter vessel, a sewage outlet is arranged at the top of the recoil pipe, and a liquid outlet is arranged at the bottom of the recoil pipe;

[0008] A backwashing assembly is embedded in the filter vessel, and the backwashing assembly includes an upper movable plug and a lower movable plug. The upper movable plug is embedded in the top of the filter vessel, and the lower movable plug is embedded in the bottom of the filter vessel. A linkage rod is connected between the upper movable plug and the lower movable plug, and the upper movable plug and the lower movable plug are slidably connected to the filter vessel.

[0009] A first blocking block and a second blocking block are embedded in the recoil pipe, a transmission rod is connected between the first blocking block and the second blocking block, and the transmission rod and the second blocking block are slidably connected to the recoil pipe;

[0010] The output end of the electric push rod is connected to the upper movable plug. When the electric push rod controls the upper movable plug to rise to the top, the first blocking block is at the highest point of the recoil pipe.

[0011] Preferably, the circulation pipe is connected to the interior of the filter vessel, the backwash pipe is connected to the interior of the filter vessel, the upper movable plug rises to the highest point, the lower movable plug seals the bottom opening of the circulation pipe, and at the same time the first blocking block seals the sewage outlet.

[0012] Preferably, a filter assembly is embedded inside the filter vessel, and the filter assembly includes a filter element, which divides the interior of the filter vessel into two parts, an upper part and an lower part. The bottom end of the circulation pipe is connected to the lower half of the filter vessel, and the top end of the circulation pipe is connected to the upper half of the filter vessel.

[0013] Preferably, a filter cartridge is embedded in the filter element, a top filter is embedded in the filter cartridge, a first filter screen is embedded in the top filter, and a reset spring is connected to the bottom end of the first filter screen.

[0014] Preferably, the bottom end of the return spring is connected to the inner wall of the filter element, and the return spring is used to support the first filter screen, and the first filter screen is longitudinally slidably connected inside the top filter.

[0015] Preferably, a conduction component is embedded in the interior of the filter element, and the conduction component includes a horn block, and the horn block is configured to be truncated cone-shaped, and the top end diameter of the horn block is large, and the bottom end diameter is small.

[0016] Preferably, a drainage hole is opened on the side of the speaker block, an insert is embedded in the speaker block, the top of the insert is connected to an inner plug, the inner plug and the insert are both embedded in the speaker block, and a buffer spring is connected to the outer surface of the insert.

[0017] Preferably, a flow groove with a small opening at the bottom and a large opening at the top is provided inside the speaker block, and the inner plug is embedded in the flow groove.

[0018] Preferably, a second filter screen is embedded inside the inner plug, and the second filter screen is used for filtering the working fluid, and the filter hole diameter of the second filter screen is larger than the filter hole diameter of the first filter screen.

[0019] Preferably, a spiral piece is embedded inside the inner plug, and the spiral piece and the inner plug are rotationally connected. The spiral piece is configured as a spiral structure with a small bottom and a large top, and the impact of water flow drives the spiral piece to rotate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a filter for regenerating working fluid in a hydrogen peroxide device, which solves the problems of blockage and reduced filtering effect of traditional filter screens through backwashing, ensures production continuity, reduces production costs, simplifies equipment and operation procedures, and is conducive to large-scale promotion. In the filter assembly, filter screens with different apertures realize graded filtration and improve the overall filtering effect. The spiral sheet in the conduction assembly ensures smooth flow of the embedded plug. The horn block and the embedded plug structure can control the water flow speed to improve the impurity removal effect. The first filter screen uses the reset spring to use the water flow impact vibration to prevent pore blockage and maintain stable filtering performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the filter vessel and the assembly base of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the sewage outlet and the liquid outlet of the present invention;

[0025] Figure 4 It is a schematic diagram of the filtering state of the working fluid of the present invention;

[0026] Figure 5 This is a schematic diagram of the impurity removal state of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the filter element and the filter cartridge of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the speaker block and the inner plug of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the first filter screen and the return spring of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the insert tube and the speaker block of the present invention.

[0031] In the figure: 11, filter vessel; 12, electric push rod; 13, assembly base; 14, circulation pipe; 15, liquid inlet; 16, backwash pipe; 17, sewage outlet; 18, liquid outlet; 2, backwash assembly; 21, upper movable plug; 22, linkage rod; 23, lower movable plug; 24, first blocking block; 25, transmission rod; 26, second blocking block; 3, filter assembly; 31, filter element; 32, filter cartridge; 33, top filter; 34, first filter screen; 35, reset spring; 4, conduction assembly; 41, horn block; 42, sewage hole; 43, embedded plug; 44, second filter screen; 45, spiral sheet; 46, insert cylinder; 47, buffer spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0034] Combination Figure 1-Figure 9 The present invention discloses a filter for regenerating the working fluid of a hydrogen peroxide device, comprising a filter vessel 11, an electric push rod 12 is installed at the top of the filter vessel 11, a collection base 13 is wrapped around the outer surface of the filter vessel 11, and the collection base 13 is used to combine multiple groups of filter vessels 11 together, a circulation pipe 14 is embedded in one side of the filter vessel 11, and a liquid inlet 15 is arranged at the top of the circulation pipe 14, and the liquid inlet 15 is used to guide the working fluid, and a recoil pipe 16 is embedded in the other side of the filter vessel 11, and a sewage outlet 17 is arranged at the top of the recoil pipe 16, and a liquid outlet 18 is arranged at the bottom of the recoil pipe 16. The existing filter prolongs the overall filtration cycle by increasing the thickness of the filter screen or adopting a multi-layer filter screen structure, but this only delays the time when impurities block the filter screen, and cannot fundamentally solve the problem. Some filters adopt the method of regularly replacing the filter screen, but this method not only increases the production cost, but also causes the equipment to stop during the replacement of the filter screen, affecting the continuity of production. In addition, although some complex filter cleaning technologies can clean the filter to a certain extent, they often require complex equipment structures and operating procedures, and are difficult to promote on a large scale in actual industrial applications.

[0035] In order to solve this problem, the water flow direction is changed periodically to make the water flow in the reverse direction, and the impurities attached to the filter are washed away by the impact force of the water flow. While ensuring the normal filtering function of the filter, it can effectively solve the problems of filter blockage and reduced filtering effect. For systems such as hydrogen peroxide devices that have strict requirements on filtering effects and need to run continuously for a long time, backwashing technology can ensure the high-efficiency filtration of the filter without affecting production continuity, reduce the problems of reduced production efficiency, reduced product quality and increased equipment maintenance costs caused by filter blockage, and has important practical application value.

[0036] The specific operations are as follows:

[0037] The filter vessel 11 is embedded with a backwashing assembly 2, which includes an upper movable plug 21 and a lower movable plug 23. The upper movable plug 21 is embedded in the top of the filter vessel 11, the circulation pipe 14 is connected to the inside of the filter vessel 11, and the backwashing pipe 16 is connected to the inside of the filter vessel 11. The upper movable plug 21 rises to the highest point, and the lower movable plug 23 seals the bottom opening of the circulation pipe 14. At the same time, the first blocking block 24 seals the sewage outlet 17. The filter vessel 11 A filter assembly 3 is embedded inside the filter vessel 11, and the filter assembly 3 includes a filter element 31. The filter element 31 divides the interior of the filter vessel 11 into two parts, an upper part and an lower part. The bottom end of the circulation pipe 14 is connected to the lower half of the filter vessel 11, and the top end of the circulation pipe 14 is connected to the upper half of the filter vessel 11. A lower movable plug 23 is embedded at the bottom end of the filter vessel 11, and a linkage rod 22 is connected between the upper movable plug 21 and the lower movable plug 23. The upper movable plug 21 and the lower movable plug 23 are slidably connected to the filter vessel 11;

[0038] A first blocking block 24 and a second blocking block 26 are embedded in the recoil tube 16, a transmission rod 25 is connected between the first blocking block 24 and the second blocking block 26, and the transmission rod 25 and the second blocking block 26 are slidably connected to the recoil tube 16;

[0039] The output end of the electric push rod 12 is connected to the upper movable plug 21 . When the electric push rod 12 controls the upper movable plug 21 to rise to the top, the first blocking block 24 is at the highest point of the recoil pipe 16 .

[0040] In normal filtering operation, the working liquid is transported to the inside of the filter vessel 11 through the liquid inlet 15, and the liquid is filtered by the filter assembly 3 inside the filter vessel 11. The filtered liquid is discharged through the liquid outlet 18, and the filtration of the working liquid is realized in the first channel. At this time, the upper movable plug 21 rises to the top of the filter vessel 11, and the lower movable plug 23 is blocked at the lower port of the circulation pipe 14. At this time, the working liquid cannot directly enter the lower half of the filter vessel 11, and is discharged through the liquid outlet 18 after being filtered by the filter assembly 3. After a period of filtration, the upper movable plug 21 is driven to descend by the electric push rod 12. When the upper movable plug 21 is lowered, the upper movable plug 23 is lowered. After the upper movable plug 21 is lowered, the linkage rod 22 and the lower movable plug 23 are driven to be lowered. At this time, the upper movable plug 21 will block the upper port of the circulation pipe 14, and the working liquid will flow from the liquid inlet 15 to the inside of the circulation pipe 14, and finally flow into the lower half of the filter vessel 11 through the lower port of the circulation pipe 14. In addition, the second blocking block 26 is also embedded in the liquid outlet 18 to block the liquid outlet 18, so that the liquid will gradually flow from the lower half of the filter vessel 11 to the upper half, and the impurities filtered out will be mixed with the liquid through the inside of the filter assembly 3 and discharged from the inside of the sewage outlet 17, so that the impurities can be discharged;

[0041] By using backwashing, the direction of water flow is changed periodically, and the impurities attached to the filter are washed away by the impact force of water flow, which effectively solves the problems of filter blockage and reduced filtering effect of traditional filters, and avoids the reduction of production efficiency, product quality and increased equipment maintenance costs caused by filter blockage. For systems such as hydrogen peroxide devices that require long-term continuous operation, backwashing can ensure the efficient filtration of the filter without affecting production continuity, overcoming the disadvantages of the traditional method of regular filter replacement that causes equipment downtime and affects production continuity. Secondly, there is no need to replace the filter as frequently as the traditional method, which reduces the cost of filter replacement, avoids the additional manpower and material investment caused by filter replacement, and reduces the overall production cost. Compared with some complex filter cleaning technologies, the structure and operation process are relatively simple, and it is easier to promote on a large scale in actual industrial applications, avoiding the high cost and operation difficulty caused by complex equipment structure.

[0042] In order to improve the filtration of impurities, the filtration effect is further optimized by setting the filtration component 3 and the conduction component 4. The specific operation is as follows:

[0043] A filter cartridge 32 is embedded in the filter element 31, a top filter 33 is embedded in the filter cartridge 32, a first filter screen 34 is embedded in the top filter 33, a return spring 35 is connected to the bottom end of the first filter screen 34, the bottom end of the return spring 35 is connected to the inner wall of the filter element 31, the return spring 35 is used to support the first filter screen 34, and the first filter screen 34 is longitudinally slidably connected inside the top filter 33;

[0044] A conduction component 4 is also embedded in the filter element 31, and the conduction component 4 includes a horn block 41, which is set in a truncated cone shape. The top diameter of the horn block 41 is large and the bottom diameter is small. A sewage discharge hole 42 is opened on the side of the horn block 41, and an insert tube 46 is embedded in the horn block 41. The top of the insert tube 46 is connected to an inner plug 43. The inner plug 43 and the insert tube 46 are both embedded in the horn block 41. The outer surface of the insert tube 46 is connected to a buffer spring 47. The interior of the horn block 41 is provided with a flow groove with a small bottom opening and a large top opening. The inner plug 43 is embedded in the interior of the flow groove. A second filter screen 44 is embedded in the interior of the inner plug 43. The second filter screen 44 is used for filtering the working fluid. The filter hole aperture of the second filter screen 44 is larger than the filter hole aperture of the first filter screen 34. A spiral piece 45 is embedded in the interior of the inner plug 43. The spiral piece 45 and the inner plug 43 are rotatably connected. The spiral piece 45 is set to a spiral structure with a small bottom and a large top. The impact of water flow drives the spiral piece 45 to rotate.

[0045] When the working fluid enters the interior of the filter cartridge 32, the second filter screen 44 is used to filter the larger particles of impurities in the liquid. After filtration, the working fluid enters the interior of the inner plug 43. Then, the flow of the liquid drives the rotation of the spiral blade 45. When the spiral blade 45 rotates, the flow of the liquid can be promoted. At the same time, the rotation of the spiral blade 45 can scrape the inner wall of the inner plug 43. After long-term use, a certain amount of attachments will be attached to the interior of the inner plug 43. The attachments are scraped off by the rotation of the spiral blade 45. With the rotation of the spiral blade 45, the attachments on the inner wall of the inner plug 43 can also be reduced, thereby ensuring the smoothness of the inner plug 43 in guiding the liquid.

[0046] When the liquid flows too fast, the impact force generated by the liquid will become greater, and the impact of the water flow will compress the buffer spring 47. When the buffer spring 47 is compressed, the inner plug 43 will gradually approach the inside of the horn block 41. At this time, the gap between the horn block 41 and the inner plug 43 will become smaller, and the space for water flow will also become smaller. At this time, the speed of the water flow is also reduced. By slowing down the circulation rate of the water flow, the effect of removing impurities is also improved. Under the flow of water, part of the water flow directly flows through the inside of the inner plug 43, another part will flow through the gap between the inner plug 43 and the horn block 41, and another part will be discharged through the drain hole 42. Among them, the inner plug 43 and the horn block 41 suppress the water flow speed according to the change of the water flow size, thereby controlling the filtering effect.

[0047] When the liquid flows out through the horn block 41, it will hit the first filter screen 34, and the liquid will be filtered again through the first filter screen 34. This time the filtration will be more refined than the filtration of the second filter screen 44, and smaller particles of impurities can be filtered. Under the flow of liquid, the force hitting the first filter screen 34 will continue to change. This is because the water flow is in a turbulent state. The speed of the water flow particles in the turbulent flow, so the force hitting the first filter screen 34 will fluctuate. By arranging a return spring 35 at the bottom end of the first filter screen 34, the dynamic process of the force hitting the first filter screen 34 can be used to realize the continuous vibration of the first filter screen 34. The first filter screen 34 will vibrate when it moves up and down. The vibration can make the impurities in the pores be shaken off during the dynamic up and down movement, so as to keep the pores unobstructed, thereby ensuring that the effective filtration area of ​​the first filter screen 34 will not be reduced due to pore blockage, and maintaining stable filtering performance.

[0048] In the filter assembly, by setting filter screens with different apertures, the second filter screen 44 and the first filter screen 34, graded filtration of impurities of different particle sizes is achieved. The second filter screen 44 first filters larger particle impurities, and the first filter screen 34 performs more fine filtration, thereby improving the overall filtration effect of impurities. Secondly, the spiral sheet 45 in the conduction assembly rotates under the impact of water flow, which can not only promote the flow of liquid, but also scrape the inner wall of the inner plug 43, reduce the adhesion of the inner wall attachment, ensure the patency of the inner plug 43 for liquid diversion, and thus maintain the stable operation of the filtration system. The structural design of the speaker block 41 and the embedded plug 43 in the conduction component can automatically adjust the gap between the two according to the size of the water flow, suppress the water flow speed, and reduce the flow speed when the water flow speed is too fast, thereby controlling the filtering effect and improving the removal effect of impurities. A return spring 35 is set at the bottom of the first filter screen 34. The vibration generated by the impact of the water flow on the first filter screen 34 under the turbulent state is used to shake off the impurities in the pores during the dynamic up and down movement, thereby keeping the pores unobstructed, ensuring that the effective filtering area of ​​the first filter screen 34 is stable, and maintaining stable filtering performance.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter for regenerating working fluid in a hydrogen peroxide device, comprising a filter vessel (11), characterized in that: An electric push rod (12) is installed at the top of the filter vessel (11); the outer surface of the filter vessel (11) is wrapped with a collection base (13); the collection base (13) is used to combine multiple groups of filter vessels (11) together; a circulation pipe (14) is embedded in one side of the filter vessel (11); a liquid inlet (15) is provided at the top of the circulation pipe (14); the liquid inlet (15) is used to guide the working liquid; a recoil pipe (16) is embedded in the other side of the filter vessel (11); a sewage outlet (17) is provided at the top of the recoil pipe (16); and a liquid outlet (18) is provided at the bottom of the recoil pipe (16); A backwashing assembly (2) is embedded in the filter vessel (11), and the backwashing assembly (2) comprises an upper movable plug (21) and a lower movable plug (23); the upper movable plug (21) is embedded in the top end of the filter vessel (11), and the lower movable plug (23) is embedded in the bottom end of the filter vessel (11); a linkage rod (22) is connected between the upper movable plug (21) and the lower movable plug (23); and the upper movable plug (21) and the lower movable plug (23) are slidably connected to the filter vessel (11); A first blocking block (24) and a second blocking block (26) are embedded in the recoil tube (16); a transmission rod (25) is connected between the first blocking block (24) and the second blocking block (26); and the transmission rod (25) and the second blocking block (26) are slidably connected to the recoil tube (16); The output end of the electric push rod (12) is connected to the upper movable plug (21), and when the electric push rod (12) controls the upper movable plug (21) to rise to the top, the first blocking block (24) is located at the highest point of the recoil pipe (16); A filter assembly (3) is embedded in the filter vessel (11), the filter assembly (3) comprising a filter element (31), a filter cartridge (32) is embedded in the filter element (31), a top filter (33) is embedded in the filter cartridge (32), a first filter screen (34) is embedded in the top filter (33), a bottom end of the first filter screen (34) is connected to a return spring (35), the bottom end of the return spring (35) is connected to the inner wall of the filter element (31), the return spring (35) is used to support the first filter screen (34), the first filter screen (34) is longitudinally slidably connected in the top filter (33), a conduction assembly (4) is also embedded in the filter element (31), the conduction assembly (4) comprises a horn block (41), the horn block (41) is arranged in a truncated cone shape, the top end of the horn block (41) has a large diameter and the bottom end has a small diameter, and a drainage hole (42) is provided on the side of the horn block (41). The speaker block (41) has an insert (46) embedded inside, the top of the insert (46) is connected to an inner plug (43), the inner plug (43) and the insert (46) are both embedded inside the speaker block (41), the outer surface of the insert (46) is connected to a buffer spring (47), the speaker block (41) is provided with a flow groove with a small bottom opening and a large top opening, the inner plug (43) is embedded inside the flow groove, a second filter screen (44) is embedded inside the inner plug (43), the second filter screen (44) is used for filtering the working fluid, the filter hole diameter of the second filter screen (44) is larger than the filter hole diameter of the first filter screen (34), a spiral piece (45) is embedded inside the inner plug (43), the spiral piece (45) and the inner plug (43) are rotatably connected, the spiral piece (45) is set as a spiral structure with a small bottom and a large top, and the impact of water flow drives the spiral piece (45) to rotate.

2. A filter for regenerating working fluid in a hydrogen peroxide device according to claim 1, characterized in that: The circulation pipe (14) is connected to the interior of the filter vessel (11), the backwash pipe (16) is connected to the interior of the filter vessel (11), the upper movable plug (21) rises to the highest point, the lower movable plug (23) seals the bottom opening of the circulation pipe (14), and at the same time the first blocking block (24) seals the sewage outlet (17).

3. A filter for regenerating working fluid in a hydrogen peroxide device according to claim 2, characterized in that: The filter element (31) divides the interior of the filter vessel (11) into two parts, an upper part and an lower part; the bottom end of the circulation tube (14) is connected to the lower part of the filter vessel (11); and the top end of the circulation tube (14) is connected to the upper part of the filter vessel (11).

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