Device and cleaning assembly for cleaning drum-type membrane filter element

Abstract

The utility model belongs to the technical field of tobacco production, and particularly relates to a device for cleaning a barrel-type film-covered filter element, which comprises a dust collection barrel, a cleaning air knife assembly, a catch wheel, a carrier roller and a power-assisted air knife assembly, and is connected with the barrel-type film-covered filter element cleaning assembly in a manner that the barrel-type film-covered filter element is sleeved outside the cleaning air knife assembly; the outer surface of the barrel-type membrane filter element is in rotary contact with the outer walls of the two carrier rollers respectively, and the end face of the blind cover of the barrel-type membrane filter element is in rotary contact with the rotary end of the catch wheel 3. The device disclosed by the utility model can shorten the time consumed by soot blowing and cleaning of a single filter element, greatly improve the cleaning efficiency, avoid the damage to the filter element or pollution and damage to the environment caused by a traditional soot blowing mode, save the energy consumption of compressed air used for soot blowing, and have important significance in popularization in the whole tobacco industry.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco processing, in particular to a device for cleaning a cylindrical membrane filter element and a cleaning component. Background Art

[0002] Technological development, equipment upgrades, and improved production processes inevitably lead to the renovation and updating of production line equipment in production workshops. However, due to the numerous links involved in a production line and the significant capital investment required to renovate or build new workshop hardware, in actual production, the upgrade, renovation, and update of process equipment must be carried out within the existing equipment layout and hardware conditions. For example, during the operation of a silk-making workshop, a large amount of dust is generated. However, due to the limited number of existing power sources, air source interfaces, and dust removal or moisture exhaust pipes, dust collectors are currently mostly used for on-site dust removal at workshop workstations.

[0003] Among them, the cylindrical membrane filter element is a component in the dust collector that needs to be disassembled and cleaned frequently. After the dust collector has been running for a period of time, a large amount of dust will adhere to the cylindrical membrane filter element. At this time, it needs to be disassembled and blown clean one by one. Only when it reaches a certain degree of cleanliness can it be installed back into the dust collector to meet the normal operation of the dust collector.

[0004] However, there are currently no suitable cleaning tools for cleaning cartridge membrane filters. The traditional cleaning method mainly involves pulling the cartridge membrane filter and dust collector into the open air or open space, and then using the dust collector's built-in timed pulse blower or other compressed air supply device to blow compressed air to clean the cartridge membrane filter one by one. Because the blowing force cannot be controlled during this cleaning process, it will cause irreversible damage to the filter element in the long run. In addition, this cleaning process is not only inefficient, but also generates a large amount of dust during the cleaning process, which not only causes environmental pollution problems but also causes invisible harm to personnel. Therefore, it is necessary to design a cartridge membrane filter cleaning device that can clean efficiently and is environmentally friendly.

[0005] In order to solve at least one of the above problems, the present utility model is proposed. Utility Model Content

[0006] The utility model provides a device, a cleaning assembly and a method for using a cylindrical membrane filter element. The cylindrical membrane filter element that needs to be cleaned can be placed in a dedicated device for cleaning, which greatly shortens the cleaning time of a single cylindrical membrane filter element and improves the cleaning efficiency. At the same time, it effectively avoids the problems of damage to the filter element and environmental pollution caused by the traditional soot blowing method. It has important promotion significance in the tobacco industry and related similar fields.

[0007] The technical solution adopted by this utility model is:

[0008] In a first aspect, the present invention provides a device for cleaning a cartridge membrane filter element, comprising the following components:

[0009] The dust collecting cylinder 1 includes a clean room 11 in the upper section and a dust removal room 12 in the lower section, which together form an independent space. An air supply port 111 communicating with the outside is provided on the front side wall of the clean room 11, and a negative pressure dust removal interface 121 communicating with the outside is provided at the bottom of the dust removal room 12. In actual application, the negative pressure dust removal interface 121 is used to connect an external negative pressure dust removal device such as a dust collector. It should be noted that the independent spaces formed by the clean room 11 in the upper section and the dust removal room 12 in the lower section are interconnected.

[0010] The cleaning air knife assembly 2 includes an air knife mounting plate 21, a first short air knife 22, and a first long air knife 23. The first short air knife 22 and the first long air knife 23 are connected end to end and are mounted on the side wall of the air knife mounting plate 21. The side walls of the first short air knife 22 and the first long air knife 23 are both provided with a first air outlet channel 24.

[0011] The stopper wheel 3 includes a stopper wheel shaft 31, a bearing 32, and a nylon end cap 33. One end of the stopper wheel shaft 31 is connected to the inner circle of the bearing 32 to form a fixed end. The end of the bearing 32, whose outer circle is away from the stopper wheel shaft 31 and connected to the inner circle of the bearing 32, is covered with a nylon end cap 33. The outer circle of the bearing 32 and the nylon end cap 33 form a rotating end as a whole. The nylon material of the nylon end cap 33 not only makes it have good wear resistance, but also can well protect the filter element from wear.

[0012] Rollers 4, number 2; preferably, the outer surface of the rollers is made of stainless steel;

[0013] The power-assisted air knife assembly 5 includes an air knife mounting frame 51, a second short air knife 52, and a second long air knife 53. The second short air knife 52 and the second long air knife 53 are mounted end to end on the air knife mounting frame 51, wherein the unconnected ends of the second short air knife 52 and the second long air knife 53 are rotatably connected to the ends of the air knife mounting frame 51; the side walls of the second short air knife 52 and the second long air knife 53 are both provided with a second air outlet channel 54;

[0014] The positional relationships among the above components are as follows:

[0015] The blocking wheel 3 is connected to the non-connecting end of the first short air knife 22 or the first long air knife 23 through the non-bearing 32 connecting end of the blocking wheel shaft 31;

[0016] The cleaning air knife assembly 2 is connected to the rear wall inside the cleaning chamber 11 through one end of the first short air knife 22 or the first long air knife 23 facing away from the retaining wheel 3. One end of the two idler rollers 4 is rotatably connected to the rear wall inside the cleaning chamber 11. The two idler rollers 4 are symmetrically arranged below the cleaning air knife assembly 2 and are arranged in a triangular shape with the cleaning air knife assembly 2, where the cleaning air knife assembly 2 is arranged at the vertex where the two waists of the triangle intersect, and the two idler rollers 4 are respectively arranged at the vertices where the two waists and the base of the triangle intersect; the optimal layout is that the two idler rollers 4 are symmetrically arranged below the cleaning air knife assembly 2 and are arranged in an isosceles triangle with the cleaning air knife assembly 2.

[0017] The boosting air knife assembly 5 is arranged obliquely above the cleaning air knife assembly 2. One end of the air knife mounting bracket 51 of the boosting air knife assembly 5 is mounted on the rear wall inside the cleaning chamber 11.

[0018] Preferably, the first air outlet channels 24 on the side walls of the first short air knife 22 and the first long air knife 23 are connected end to end to form a "one" shape; the second air outlet channels 54 on the side walls of the second short air knife 52 and the second long air knife 53 are connected end to end to form a "one" shape. In order to ensure the air pressure blown out from each air knife, the two ends of the first short air knife 22, the two ends of the first long air knife 23, the two ends of the second short air knife 52, and the two ends of the second long air knife 53 are preferably sealed, so that the blown air can only be directed at the cylindrical film-coated filter element.

[0019] Preferably, the dust collection cylinder 1 further includes a floor bracket 13. The floor bracket 13 is installed at the bottom of the cleaning chamber 11. The plane formed by the top end of the floor bracket 13 and the plane formed by the bottom end form a certain angle, so that the dust collection cylinder 1 is inclined at the top end of the floor bracket 13. The front end of the dust collection cylinder 1 is the highest end and the rear end is the lowest end. Further, the components such as the cleaning air knife assembly 2, the idler rollers 4, and the boosting air knife assembly 5 installed inside the cylinder should preferably also be inclined as the dust collection cylinder 1 is inclined, that is, the cleaning air knife assembly 2, the idler rollers 4, and the boosting air knife assembly 5 should be kept perpendicular to the rear wall of the cleaning chamber 11. Preferably, the axis of the dust collection cylinder 1 is set at an angle of 15° with the horizontal ground. There are two functions of such a design: First, the inclined setting of the device can make the filter element be affected by gravity to offset the influence of compressed air, thereby preventing the filter element from actively disengaging from the device; Second, the inclined setting of the device can make the dust separated from the filter element initially fall downward naturally, thereby avoiding the dust from overflowing from the air supply opening 111 and polluting the environment.

[0020] Preferably, the dust removal chamber 12 is in a flat funnel shape; the cleaning chamber 11 is in a frustum-shaped cylindrical shape with a gradually decreasing diameter from the front end to the rear end. Preferably, the connection from the front end to the rear end on the outer wall of the cleaning chamber 11 forms an 8° angle with the central axis of the cleaning chamber 11.

[0021] Preferably, the longest diameter of the air supply opening 111 is smaller than the shortest diameter of the front side wall of the cleaning chamber 11. The main functions of the air supply opening 111 are to serve as the insertion and extraction opening for the cartridge type membrane filter element and as the air supply opening for balancing the air volume and air pressure in the balancing device. However, considering the prevention of dust overflow during cleaning, the diameter of the air supply opening 111 should not be too large when ensuring the above two functions. It is preferably designed as a square-round groove type;

[0022] Preferably, air inlets are respectively provided on the side walls of the first short air knife 22, the first long air knife 23, the second short air knife 52, and the second long air knife 53. The air inlets are respectively communicated with the first air outlet channels (24) on the side walls of the first short air knife 22 and the first long air knife 23, and the second air outlet channels (54) on the side walls of the second short air knife 52 and the second long air knife 53. The air inlets of the first short air knife 22 and the second short air knife 52 are externally connected to the same air supply line, and the air inlets of the first long air knife 23 and the second long air knife 53 are externally connected to the same air supply line. By grouping and connecting the short knives and long knives of the cleaning air knife assembly 2 and the assisting air knife assembly 5 to the external air supply lines, separate control of the short knives and long knives can be achieved, which can meet the cleaning of filter elements of different lengths and can also minimize energy consumption to the greatest extent. In practical applications, the common length dimensions of filter elements are 500 mm, 600 mm, and 800 mm. Therefore, in this device, the first long air knife 23 and the second long air knife 53 adopted are preferably set to 500 mm, and the first short air knife 22 and the second short air knife 52 are set to 300 mm.

[0023] Meanwhile, to ensure the smooth completion of cleaning, the overall length of the dust collection cylinder 1 should be greater than the sum of the lengths of the first short air knife 22 and the first long air knife 23, or the length of the idler roller 4, or the sum of the lengths of the second short air knife 52 and the second long air knife 53. Optimally, the sum of the lengths of the first short air knife 22 and the first long air knife 23, the length of the idler roller 4, and the sum of the lengths of the second short air knife 52 and the second long air knife 53 should be equivalent.

[0024] The second aspect of the present utility model provides a cleaning assembly for a cartridge type membrane filter element. The assembly includes the above-mentioned device and the cartridge type membrane filter element 6. The cartridge type membrane filter element 6 is a hollow cylindrical structure with one end open and the other end provided with a blind cover 61;

[0025] The connection mode between the device and the cartridge type membrane filter element is as follows: The cartridge type membrane filter element 6 is sleeved outside the cleaning air knife assembly 2, and the outer surface of the cartridge type membrane filter element 6 is in rotational contact with the outer walls of the 2 idler rollers 4 respectively. The end face of the blind cover 61 of the cartridge type membrane filter element 6 is in rotational contact with the rotating end of the retaining wheel 3.

[0026] Preferably, the first air outlet channel 24 faces the inner surface of the cartridge - type membrane filter element 6; the second air outlet channel 54 faces the outer surface of the cartridge - type membrane filter element 6, and the air outlet path of the second air outlet channel 54 is tangent to the outer surface of the cartridge - type membrane filter element 6.

[0027] Preferably, the outermost edge of the assisting air knife assembly 5 on the side close to the cartridge - type membrane filter element 6 is at a vertical distance of 10 - 20 mm from the outer surface of the cartridge - type membrane filter element 6.

[0028] The third aspect of the present utility model provides a method for using a cleaning assembly for a cartridge - type membrane filter element, which uses the device and the cartridge - type membrane filter element 6;

[0029] Before starting the cleaning, first place the cartridge - type membrane filter element 6 into the air supply opening 111, and pass the outer cavity of the cartridge - type membrane filter element 6 over the outside of the cleaning air knife assembly 2. The outer surface of the cartridge - type membrane filter element 6 abuts against the two supporting rollers 4, and the end surface of the blind cover 61 of the cartridge - type membrane filter element 6 abuts against the retaining wheel 3;

[0030] Turn on the device and external equipment. The compressed air ejected by the first short air knife 22 and / or the first long air knife 23 in the cleaning air knife assembly 2 makes the deposited dust inside the cartridge - type membrane filter element 6 fly up and disperse. At the same time, the compressed air ejected by the second short air knife 52 and / or the second long air knife 53 in the assisting air knife assembly 5 located obliquely above the cleaning air knife assembly 2 makes the cartridge - type membrane filter element 6 start to rotate in a circular motion. This process enables the inside of the cartridge - type membrane filter element 6 to be blown and cleaned by the cleaning air knife assembly 2. At the same time, the centrifugal force generated by the circular motion of the cartridge - type membrane filter element 6 throws the dispersed dust to the surroundings. The dust is collected by the dust removal chamber 12 and sucked away by the dust removal equipment connected to the negative - pressure dust removal interface 121, and then undergoes unified sedimentation treatment.

[0031] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0032] The device of the present utility model can shorten the time consumed for blowing and cleaning a single filter element, greatly improve the cleaning efficiency, avoid the damage to the filter element or the environmental pollution and damage caused by the traditional blowing - ash method, and also save the energy consumption of the compressed air used for blowing ash. It is of great significance for promotion throughout the tobacco industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following - described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] AppendixFigure 1 Structural schematic diagram of the dust collection cylinder in Embodiment 1 of the present utility model;

[0035] Appendix Figure 2 Installation schematic diagram of the cleaning air knife assembly, boosting air knife assembly, and idler roller in Embodiment 1 of the present utility model;

[0036] Appendix Figure 3 Structural schematic diagram of the cleaning air knife assembly in Embodiment 1 of the present utility model;

[0037] Appendix Figure 4 Structural schematic diagram of the retaining wheel in Embodiment 1 of the present utility model;

[0038] Appendix Figure 5 Structural schematic diagram of the boosting air knife assembly in Embodiment 1 of the present utility model;

[0039] Appendix Figure 6 Installation schematic diagram of the cleaning air knife assembly, boosting air knife assembly, idler roller, and cartridge membrane filter in Embodiment 2 of the present utility model;

[0040] Reference numerals: 1 - dust collection cylinder, 11 - cleaning chamber, 12 - dust removal chamber, 111 - air supply opening, 121 - negative pressure dust removal interface, 2 - cleaning air knife assembly, 21 - air knife mounting plate, 22 - first short air knife, 23 - first long air knife, 24 - first air outlet channel, 3 - retaining wheel, 31 - retaining wheel small shaft, 32 - bearing, 33 - nylon end cap, 4 - idler roller, 5 - boosting air knife assembly, 51 - air knife mounting frame, 52 - second short air knife, 53 - second long air knife, 54 - second air outlet channel, 6 - cartridge membrane filter, 61 - blind cover. Detailed implementation manners

[0041] The present utility model will be further described in detail below in conjunction with the embodiments, but it is not a limitation to the present utility model. Any transformation or improvement made based on the teachings of the present utility model falls within the protection scope of the present utility model. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0042] Embodiment 1

[0043] As Figure 1As shown in the figure, the dust collecting cylinder 1 includes a cleaning chamber 11 in the upper section and a dust removal chamber 12 in the lower section. The two together form an independent space. An air supply opening 111 communicating with the outside is provided on the front side wall of the cleaning chamber 11, and a negative pressure dust removal interface 121 communicating with the outside is opened at the bottom of the dust removal chamber 12. The negative pressure dust removal interface 121 is circular, the air supply opening 111 is a square-round groove type, the dust removal chamber 12 is in a flat funnel shape, and the cleaning chamber 11 is in a cylindrical shape. Specifically, the negative pressure dust removal interface 121 is used to connect with an external dust collector to enable the dust collector to suck away the dust in the dust removal chamber 12.

[0044] The dust collecting cylinder 1 further includes a floor bracket 13. The floor bracket 13 is installed at the bottom of the cleaning chamber 11. The plane formed by the top end of the floor bracket 13 and the plane formed by the bottom end form a certain angle, so that the dust collecting cylinder 1 is inclined at the top end of the floor bracket 13. The front end of the dust collecting cylinder 1 is the highest end and the rear end is the lowest end. Further, the cleaning air knife assembly 2, the idler roller 4, and the assisting air knife assembly 5 installed in the cylinder are inclined as the dust collecting cylinder 1 is inclined, that is, the cleaning air knife assembly 2, the idler roller 4, and the assisting air knife assembly 5 are perpendicular to the rear wall of the cleaning chamber 11. The axis of the dust collecting cylinder 1 forms an angle of 15° with the horizontal ground. The floor bracket 13 can be a structure including four legs. Among the four legs, the two front legs are longer than the two rear legs, so as to realize the inclined setting of the dust collecting cylinder 1, and the front end of the dust collecting cylinder 1 is the highest end and the rear end is the lowest end. A transverse strengthening beam is also provided between the four legs to ensure the overall strength.

[0045] As Figure 3 shown in the figure, the cleaning air knife assembly 2 includes an air knife mounting plate 21, a first short air knife 22, and a first long air knife 23. The first short air knife 22 and the first long air knife 23 are installed on the side wall of the air knife mounting plate 21 end to end. The side walls of the first short air knife 22 and the first long air knife 23 are both provided with a first air outlet channel 24. The length of the first short air knife 22 is 300 mm, and the length of the first long air knife 23 is 500 mm.

[0046] The first air outlet channels 24 on the side walls of the first short air knife 22 and the first long air knife 23 are connected end to end to form a "one" shape.

[0047] As Figure 4 shown in the figure, the retaining wheel 3 includes a retaining wheel small shaft 31, a bearing 32, and a nylon end cap 33. One end of the retaining wheel small shaft 31 is connected to the inner circle of the bearing 32 to form a fixed end. The outer circle of the bearing 32 is covered with a nylon end cap 33 at the end away from the connection between the retaining wheel small shaft 31 and the inner circle of the bearing 32. The outer circle of the bearing 32 and the nylon end cap 33 together form a rotating end. The material of the nylon end cap 33 is preferably nylon, which can ensure that the nylon end cap 33 has good wear resistance, and can also ensure that when the nylon end cap 33 abuts against the blind cap 61 of the cylindrical film-covered filter element, the filter element can be well protected from wear.

[0048] As shown Figure 5 in FIG. Figure 5 , the assisting air knife assembly 5 includes an air knife mounting bracket 51, a second short air knife 52 and a second long air knife 53. The second short air knife 52 and the second long air knife 53 are connected end to end. The unconnected ends of the second short air knife 52 and the second long air knife 53 are rotatably connected to both ends of the air knife mounting bracket 51. Second air outlet channels 54 are provided on the side walls of both the second short air knife 52 and the second long air knife 53. The length of the second short air knife 52 is 300 mm, and the length of the second long air knife 53 is 500 mm. The second air outlet channels 54 on the side walls of the second short air knife 52 and the second long air knife 53 are connected end to end to form a "one" shape.

[0049] An air inlet is further provided on the side wall of the first short air knife 22, the side wall of the first long air knife 23, the side wall of the second short air knife 52, and the side wall of the second long air knife 53. The first air inlet is communicated with the first air outlet channel 24 on the side wall of the first short air knife 22. The second air inlet is communicated with the first air outlet channel 24 on the side wall of the first long air knife 23. The third air inlet is communicated with the second air outlet channel 54 on the side wall of the second short air knife 52. The third air inlet is communicated with the second air outlet channel 54 of the second long air knife 53. The air inlets of the first short air knife 22 and the second short air knife 52 are externally connected to the same air supply path. The air inlets of the first long air knife 23 and the second long air knife 53 are externally connected to the same air supply path (not shown in the figure).

[0050] As shown Figure 2 in FIG. Figure 2 , the positional relationship between the above-mentioned components is as follows:

[0051] The retaining wheel 3 is connected to the non-connected end of the first long air knife 23 through the non-bearing 32 connection end of the retaining wheel small shaft 31;

[0052] The cleaning air knife assembly 2 is connected to the rear wall in the cleaning chamber 11 through the end of the first short air knife 22 facing away from the retaining wheel 3. One ends of the two idler rollers 4 are rotatably connected to the rear wall in the cleaning chamber 11. The two idler rollers 4 are symmetrically arranged below the cleaning air knife assembly 2 and are arranged in an isosceles triangle with the cleaning air knife assembly 2. The cleaning air knife assembly 2 is arranged at the vertex where the two waists of the isosceles triangle intersect. The two idler rollers 4 are respectively arranged at the vertices where the two waists and the base of the isosceles triangle intersect;

[0053] The assisting air knife assembly 5 is arranged obliquely above the cleaning air knife assembly 2. The assisting air knife assembly 5 is installed on the rear wall in the cleaning chamber 11 through one end of the air knife mounting bracket 51.

[0054] Embodiment 2

[0055] As shown Figure 6As shown in the figure, a cleaning assembly for a cartridge - type membrane filter includes the device described in Embodiment 1 and a cartridge - type membrane filter 6. The cartridge - type membrane filter 6 is a hollow cylindrical structure with one end open and the other end provided with a blind cover 61. The length of the cartridge - type membrane filter 6 is 800 mm.

[0056] The connection method between the device and the cartridge - type membrane filter is as follows: The cartridge - type membrane filter 6 is sleeved outside the cleaning air knife assembly 2, and the outer surface of the cartridge - type membrane filter 6 is in rotational contact with the outer walls of the two idler rollers 4 respectively. The end face of the blind cover 61 of the cartridge - type membrane filter 6 is in rotational contact with the rotating end of the retaining wheel 3.

[0057] The first air outlet channel 24 faces the inner surface of the cartridge - type membrane filter 6; the second air outlet channel 54 faces the outer surface of the cartridge - type membrane filter 6, and the air outlet path of the second air outlet channel 54 is tangent to the outer surface of the cartridge - type membrane filter 6.

[0058] The vertical distance between the boosting air knife assembly 5 and the outer surface of the cartridge - type membrane filter 6 is 16.5 mm.

[0059] Embodiment 3

[0060] A method for using a cleaning assembly for a cartridge - type membrane filter, which uses the device and the cartridge - type membrane filter 6;

[0061] Before starting the cleaning, first place the cartridge - type membrane filter 6 through the air supply opening 111, align the cavity of the cartridge - type membrane filter 6 with one end of the cleaning air knife assembly 2 close to the air supply opening 111. Further, sleeve the cavity of the cartridge - type membrane filter 6 outside the cleaning air knife assembly 2, and make the outer surface of the cartridge - type membrane filter 6 abut against the two idler rollers 4, and the end face of the blind cover 61 of the cartridge - type membrane filter 6 abut against the retaining wheel 3.

[0062] Turn on the device and external equipment. The compressed air ejected by the first short air knife 22 and / or the first long air knife 23 in the cleaning air knife assembly 2 makes the deposited dust inside the cartridge - type membrane filter 6 fly up and scatter. At the same time, the compressed air ejected by the second short air knife 52 and / or the second long air knife 53 in the boosting air knife assembly 5 located obliquely above the cleaning air knife assembly 2 makes the cartridge - type membrane filter 6 start to rotate in a circular motion. In this process, the inside of the cartridge - type membrane filter 6 can be purged and cleaned by the cleaning air knife assembly 2. At the same time, the centrifugal force generated by the circular motion of the cartridge - type membrane filter 6 throws the scattered dust to the surroundings. The dust is collected by the dust removal chamber 12 and sucked away by the dust removal equipment connected to the negative - pressure dust removal interface 121, and then undergoes unified sedimentation treatment.

[0063] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application rather than to limit them. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and details without departing from the scope defined by the claims of the present application; the dimensions described in the drawings and embodiments have nothing to do with specific physical objects and are not used to limit the protection scope of the present application. The physical dimensions can be selected and changed according to actual needs.

Claims

1. A device for cleaning a cartridge-type membrane filter element, characterized in that, The device includes: A dust collection cylinder (1), including a cleaning chamber (11) in the upper section and a dust removal chamber (12) in the lower section, which together form an independent space. A makeup air inlet (111) communicating with the outside is provided on the front side wall of the cleaning chamber (11), and a negative pressure dust removal interface (121) communicating with the outside is opened at the bottom of the dust removal chamber (12); A cleaning air knife assembly (2), including an air knife mounting plate (21), a first short air knife (22) and a first long air knife (23). The first short air knife (22) and the first long air knife (23) are installed on the side wall of the air knife mounting plate (21) end to end. First air outlet channels (24) are provided on the side walls of both the first short air knife (22) and the first long air knife (23); A retaining wheel (3), including a retaining wheel stub shaft (31), a bearing (32) and a nylon end cap (33). One end of the retaining wheel stub shaft (31) is connected to the inner circle of the bearing (32) to form a fixed end. The outer circle of the bearing (32) is covered with a nylon end cap (33) at the end departing from the connection end of the retaining wheel stub shaft (31) and the inner circle of the bearing (32). The outer circle of the bearing (32) and the nylon end cap (33) together form a rotating end; There are 2 supporting rollers (4); An assisting air knife assembly (5), including an air knife mounting frame (51), a second short air knife (52) and a second long air knife (53). The second short air knife (52) and the second long air knife (53) are connected end to end. The unconnected ends of the second short air knife (52) and the second long air knife (53) are respectively rotatably connected to both ends of the air knife mounting frame (51). Second air outlet channels (54) are provided on the side walls of both the second short air knife (52) and the second long air knife (53); The positional relationship between the above-mentioned components is as follows: The non-bearing (32) connection end of the retaining wheel stub shaft (31) of the retaining wheel (3) is connected to the non-connection end of the first short air knife (22) or the first long air knife (23); One end of the first short air knife (22) or the first long air knife (23) of the cleaning air knife assembly (2) departing from the retaining wheel (3) is connected to the rear wall in the cleaning chamber (11). The fixed ends of the 2 supporting rollers (4) are connected to the rear wall in the cleaning chamber (11). The 2 supporting rollers (4) are symmetrically arranged below the cleaning air knife assembly (2) and are arranged in a triangular shape with the cleaning air knife assembly (2). Among them, the cleaning air knife assembly (2) is arranged at the vertex where the two waists of the triangle intersect, and the 2 supporting rollers (4) are respectively arranged at the vertices where the two waists and the bottom edge of the triangle intersect; The assisting air knife assembly (5) is arranged obliquely above the cleaning air knife assembly (2). One end of the air knife mounting frame (51) of the assisting air knife assembly (5) is installed on the rear wall in the cleaning chamber (11).

2. The device for cleaning a cartridge type membrane filter according to claim 1, characterized in that, The first air outlet channels (24) on the side walls of the first short air knife (22) and the first long air knife (23) are connected end to end to form a "one" shape; the second air outlet channels (54) on the side walls of the second short air knife (52) and the second long air knife (53) are connected end to end to form a "one" shape.

3. The device for cleaning a cartridge membrane filter element according to claim 1, characterized in that: The dust collection cylinder (1) further includes a floor bracket (13), which is installed at the bottom of the cleaning chamber (11). The planes formed by the top end and the bottom end of the floor bracket (13) form a certain angle, so that the dust collection cylinder (1) is inclined at the top end of the floor bracket (13), where the front end of the dust collection cylinder (1) is the highest end and the rear end is the lowest end.

4. A device for cleaning a cartridge-type film-coated filter element according to claim 1, characterized in that, The dust removal chamber (12) is in a flat funnel shape; the cleaning chamber (11) is in an approximately cylindrical shape.

5. The device for cleaning a cartridge type film-coated filter element according to claim 1, characterized in that, The longest diameter of the air supply opening (111) is smaller than the shortest diameter of the front side wall of the cleaning chamber (11).

6. The device for cleaning a cartridge membrane filter according to claim 1, wherein, Air inlets are respectively provided on the side walls of the first short air knife (22), the first long air knife (23), the second short air knife (52), and the second long air knife (53). The air inlets are respectively communicated with the first air outlet channel (24) and the second air outlet channel (54). The air inlets of the first short air knife (22) and the second short air knife (52) are externally connected to the same air supply line, and the air inlets of the first long air knife (23) and the second long air knife (53) are externally connected to the same air supply line.

7. A cylindrical membrane filter cleaning assembly, characterized in that, The assembly includes the device according to any one of claims 1-6 and a cylindrical membrane filter element (6). The cylindrical membrane filter element (6) is a hollow cylindrical structure, with one end open and the other end provided with a blind cover (61); The connection method between the device and the cylindrical membrane filter element is that the cylindrical membrane filter element (6) is sleeved outside the cleaning air knife assembly (2), and the outer surface of the cylindrical membrane filter element (6) is in rotational contact with the outer walls of the two supporting rollers (4) respectively. The end face of the blind cover (61) of the cylindrical membrane filter element (6) is in rotational contact with the rotating end of the retaining wheel (3).

8. The cleaning assembly for a cartridge type membrane filter according to claim 7, characterized in that, The air outlet path of the first air outlet channel (24) faces the inner surface of the cylindrical membrane filter element (6); the second air outlet channel (54) faces the outer surface of the cylindrical membrane filter element (6), and the air outlet path of the second air outlet channel (54) is tangent to the outer surface of the cylindrical membrane filter element (6).

9. The cartridge film filter cleaning assembly according to claim 7, characterized in that, The outermost edge of the side of the boosting air knife assembly (5) close to the cylindrical membrane filter element (6) is 10-20 mm away from the outer surface of the cylindrical membrane filter element (6) in the vertical direction.

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