A dual-effect catalytic oxidation device

Abstract

The utility model relates to oxidation equipment technical field, the utility model provides a double -effect catalytic oxidation device, it includes the material pipeline, injects the pipe for injecting the reagent to the material pipeline, mixes the axle one end rotation setting on the lateral wall of material pipeline, can mix reagent and water through rotation, the box has the processing cavity with the material pipeline intercommunication, the board piece sets up on the lateral wall of box, and the board piece surface has titanium dioxide coating, the sleeve sets up on the lateral wall of box, the ultraviolet lamp tube sets up in the pipe cavity, is used for the illumination titanium dioxide coating on the board piece surface and mixed reagent and water. The titanium dioxide coating on the board piece surface is excited to produce electron -hole pair under the ultraviolet lamp tube illumination, and electron is captured to generate super oxygen free radical by O2, and the hole can directly oxidize organic matter or react with water to generate hydroxyl radical, simultaneously, titanium dioxide can also be used as catalyst to realize the efficient activation of H2O2, and continuously generate free radical. The problem that traditional catalyst is easy to pollute, deactivation has been solved.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of oxidation equipment technology, specifically to a dual-effect catalytic oxidation device. Background Technology

[0002] Against the backdrop of rapid global industrialization and urbanization, drinking water safety has become an increasingly prominent issue. Water bodies not only contain traditional microbial contamination, but also a large number of persistent organic pollutants (such as pesticide residues, pharmaceuticals and personal care products, and endocrine disruptors) introduced by industrial emissions, agricultural non-point source pollution, and domestic sewage infiltration. These micropollutants are characterized by low concentrations, high toxicity, and difficulty in degradation, making them difficult to completely remove using conventional water treatment processes (such as coagulation, sedimentation, filtration, and disinfection). Long-term consumption may pose a potential threat to human health. Existing technologies suffer from low concentrations of hydroxyl radicals (•OH) generated, insufficient oxidizing power, and the susceptibility of traditional catalysts to contamination and deactivation in practical applications. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a dual-effect catalytic oxidation device, which solves the technical problems of low concentration of hydroxyl radicals (•OH) generation, insufficient oxidizing power, and easy contamination and deactivation of traditional catalysts in the prior art.

[0004] According to one aspect, at least one embodiment of the present invention provides a dual-effect catalytic oxidation device, comprising: a feed pipe for conveying water, wherein an injection pipe communicating with the interior of the feed pipe is provided on the side wall of the feed pipe, and the injection pipe is used to inject a reagent into the feed pipe;

[0005] A mixing shaft, one end of which is rotatably mounted on the side wall of the feed pipe and located inside the feed pipe, is capable of mixing the medicine and water by rotating.

[0006] The housing has a processing chamber connected to the feed pipe, the processing chamber being used to receive the mixed reagent and water;

[0007] A plate, which is disposed on the side wall of the housing and located inside the processing cavity, has a titanium dioxide coating on its surface;

[0008] A sleeve is disposed on the side wall of the housing and located inside the processing cavity. The sleeve is made of transparent material and has an internal cavity.

[0009] An ultraviolet lamp is disposed inside the cavity and is used to irradiate the titanium dioxide coating on the surface of the plate, as well as the mixed reagent and water.

[0010] For example, in at least one embodiment of the present invention, a dual-effect catalytic oxidation device is provided, which further includes a filter screen disposed inside the feed pipe near one end of the housing.

[0011] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the mixing shaft includes spiral blades disposed on the periphery of the main shaft.

[0012] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the housing has an inlet and an outlet, and the area between the inlet and the outlet is a water treatment area, wherein the plate, the sleeve and the ultraviolet lamp are all located within the water treatment area.

[0013] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the inner diameter of the inlet gradually increases from the water treatment area to the outlet; and the inner diameter of the water treatment area gradually decreases from the outlet to the outlet.

[0014] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the sleeve and the ultraviolet lamp tube are a set of irradiation tube groups, and at least one set of irradiation tube groups is provided above and below one of the plates.

[0015] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the sleeve is arranged obliquely on the housing along the height direction, one end of the sleeve has a pipe opening, and further includes:

[0016] A connector for electrically connecting to the ultraviolet lamp tube and capable of covering the tube opening.

[0017] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the housing has a through-hole for inserting and removing the plate;

[0018] The housing is provided with a guide section, which has a guide groove for accommodating the side of the plate.

[0019] The plate also has a gripping part located on the outside of the housing, and the gripping part has a first insertion hole.

[0020] The outer wall of the housing is also provided with a plug-in plate, which is located on one side of the opening and has a second plug-in hole corresponding to the first plug-in hole. The housing and the plate are connected by fasteners passing through the first plug-in hole and the second plug-in hole.

[0021] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the guide groove is arranged inclined along the height direction, and its inclined direction is parallel to the inclined direction of the sleeve.

[0022] For example, in a dual-effect catalytic oxidation device provided in at least one embodiment of the present invention, the device further includes: a frame, the frame being movably disposed within the processing chamber, the frame having a plurality of collars slidably sleeved on the outer periphery of the sleeve, the frame being able to move and clean the outer periphery of the sleeve through the collars;

[0023] A linear drive unit is disposed on the housing and is used to drive the frame to move.

[0024] The beneficial effects of the embodiments of this utility model are as follows:

[0025] In this invention, a plate with a titanium dioxide coating is arranged inside the processing chamber. A sleeve and an ultraviolet lamp are also arranged on one side of the plate. Under ultraviolet light irradiation, the titanium dioxide coating on the plate surface is excited to generate electron-hole pairs based on semiconductor band theory. Electrons are captured by O2 to generate superoxide radicals, and holes can directly oxidize organic matter or react with water to generate hydroxyl radicals. Simultaneously, titanium dioxide can also act as a catalyst to achieve efficient activation of H2O2, continuously generating free radicals. Furthermore, the plate design enables the immobilization of nano-titanium dioxide. This immobilization design enhances the anti-fouling properties of nano-titanium dioxide, extending its lifespan by 2-3 times, and solving the problems of easy contamination and deactivation of traditional catalysts. At the same time, the synergistic effect of titanium dioxide and H2O2 improves the generation efficiency and sustained stability of hydroxyl radicals. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a dual-effect catalytic oxidation device in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the mixing shaft in the embodiment;

[0029] Figure 3 for Figure 1 A first-view structural schematic diagram of the housing, connectors, sleeves, etc. in the embodiment;

[0030] Figure 4 for Figure 1 A second-view structural diagram of the housing, connectors, sleeves, etc. in the embodiment (excluding the frame);

[0031] Figure 5 for Figure 1 A schematic diagram of the internal structure of the housing in the embodiment;

[0032] Figure 6 for Figure 1 A schematic diagram of the box structure in the embodiment;

[0033] Figure 7 for Figure 1 The schematic diagram of the irradiation tube assembly in the embodiment is shown.

[0034] In the diagram: 1. Feed pipe; 2. Injection pipe; 3. Mixing shaft; 301. Main shaft; 302. Spiral blade; 4. Housing; 401. Processing chamber; 402. Inlet; 403. Water treatment area; 404. Outlet; 405. Through port; 406. Guide section; 407. Guide groove; 408. Insert plate; 409. Second insertion hole; 5. Sleeve; 501. Tube cavity; 502. Tube opening; 6. Ultraviolet lamp tube; 7. Filter screen; 8. Irradiation tube assembly; 9. Connector; 10. Plate; 1001. Grip section; 1002. First insertion hole; 11. Fastener; 12. Frame; 13. Linear drive component; 14. Rotary motor. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0036] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] like Figures 1-7 As shown, this invention discloses a dual-effect catalytic oxidation device. The device includes a feed pipe 1 for conveying water to be treated, and an injection pipe 2 connected to the interior of the feed pipe 1, which is disposed on the side wall of the feed pipe 1. The injection pipe 2 is used to inject a reagent into the feed pipe 1. In this embodiment, H2O2 is injected into the feed pipe 1 through the injection pipe 2.

[0042] One end of the mixing shaft 3 is rotatably installed inside the feed pipe 1. By rotating, the injected H2O2 can be fully mixed with the water to be treated, so that the reagent is evenly distributed in the water. This ensures that the subsequent catalytic oxidation reaction is more uniform and efficient, and avoids the generation efficiency of hydroxyl radicals being affected by excessively high or low local concentrations of the reagent, thereby improving the oxidation performance of the equipment.

[0043] The device also includes a housing 4, inside which is a processing chamber 401. A plate 10 with a titanium dioxide coating is disposed within the processing chamber 401. A sleeve 5 and an ultraviolet lamp 6 are disposed on one side of the plate 10. Under irradiation by the ultraviolet lamp 6, the titanium dioxide coating on the surface of the plate 10 is excited to generate electron-hole pairs based on semiconductor band theory. Electrons are captured by O2 to generate superoxide radicals, and holes can directly oxidize organic matter or react with water to generate hydroxyl radicals. Simultaneously, titanium dioxide can also act as a catalyst to achieve efficient activation of H2O2, continuously generating free radicals. Furthermore, the design of the plate 10 enables the immobilization of nano-titanium dioxide. This immobilization design enhances the antifouling properties of the nano-titanium dioxide, extending its lifespan by 2-3 times, and solving the problems of easy contamination and deactivation of traditional catalysts. At the same time, the synergistic effect of titanium dioxide and H2O2 improves the generation efficiency and sustained stability of hydroxyl radicals.

[0044] In this design, the sleeve 5 is made of a transparent material, such as a quartz sleeve 5. The ultraviolet lamp 6 inside emits ultraviolet light (λ≤387nm), which irradiates the titanium dioxide coating on the plate 10, exciting it to produce a photocatalytic reaction. On the other hand, it directly excites the decomposition of H2O2 to generate hydroxyl radicals, and can also directly excite the dissociation of organic molecules to carry out photodegradation. The ultraviolet light provides energy for both catalytic oxidation processes, promoting the large-scale generation of hydroxyl radicals. The transparent sleeve 5 protects the ultraviolet lamp 6, ensuring its stable operation and guaranteeing the continuous photocatalytic reaction.

[0045] In some examples, the filter screen 7 is located at one end of the feed pipe 1 near the housing 4. The water to be treated and the reagent (H2O2) are mixed by the mixing shaft 3 within the feed pipe 1 and then pass through the filter screen 7. The filter screen 7 removes suspended particles, impurities, or larger-diameter contaminants from the water through physical interception, allowing the filtered liquid to enter the treatment chamber 401 of the housing 4. This prevents suspended impurities from adhering to the nano-titanium dioxide coating on the surface of the plate 10, preventing catalyst contamination, maintaining its photocatalytic activity, and further ensuring the catalyst's lifespan. It also helps to increase the concentration of hydroxyl radicals, enhance the equipment's oxidizing power, and solve the problem of low hydroxyl radical concentration and insufficient oxidizing power in existing technologies. When the main shaft 301 of the mixing shaft 3 rotates, it drives the surrounding spiral blades 302 to rotate. During rotation, the spiral blades 302 stir and push the water to be treated and the injected reagent (H2O2) within the feed pipe 1, ensuring thorough mixing of the reagent and water to form a uniform mixture.

[0046] In some examples, the inlet 402 of the housing 4 is connected to the feed pipe 1 to receive the mixed and filtered solution of water to be treated and reagents; the outlet 404 is used to discharge the water treated by the dual-effect catalytic oxidation; the water treatment area 403 between the inlet 402 and the outlet 404 is the core reaction site for the two catalytic oxidation processes, UV / H2O2 and UV / TiO2 (UV refers to ultraviolet light).

[0047] The inner diameter of the inlet 402 gradually increases from the water treatment zone 403. Under a constant flow rate, the increased inner diameter can reduce the flow rate of the mixed liquid and prolong the residence time of the mixed liquid in the water treatment zone 403, providing sufficient reaction time for the two catalytic oxidation processes. This ensures that H2O2 is fully decomposed into hydroxyl radicals (·OH) under ultraviolet light excitation, while ensuring that the electron-hole pairs generated by titanium dioxide under ultraviolet light irradiation can effectively interact with H2O2 (avoiding carrier recombination) and continuously generate hydroxyl radicals (·OH).

[0048] The inner diameter of the water treatment zone 403 to the outlet 404 gradually decreases, which gradually increases the flow rate of the mixed liquid, accelerates the discharge of the treated water, avoids the water that has been degraded from staying in the outlet 404 area for too long, reduces side reactions caused by free radical residue (such as secondary pollution), and ensures the smooth continuous operation of the equipment, so that energy consumption is reduced by 30%-40% compared with traditional processes.

[0049] In some examples, at least one set of irradiation tubes 8 is provided above and below a plate 10. The irradiation tubes 8 above and below the plate 10 provide ultraviolet light from multiple angles, reducing the light blind zone on the surface of the plate 10 and ensuring that the titanium dioxide coating on the surface of the plate 10 can receive ultraviolet light energy from all directions, maximizing the excitation of photocatalytic reaction. At the same time, ultraviolet light can also directly irradiate the mixed liquid (containing H2O2) around the plate 10, promoting the decomposition of H2O2 in the UV / H2O2 process to generate hydroxyl radicals (·OH).

[0050] In some examples, the sleeve 5 is installed at an angle along the height direction on the housing 4, and the internal cavity 501 is tilted synchronously with the sleeve 5. The tilted design allows the ultraviolet lamp 6 to reduce resistance when removing the cavity 501 with the help of a slight slope, making the installation and removal of the lamp easier. At the same time, the tilt, for example, tilting 1° relative to the horizontal plane, will not significantly affect the irradiation range of the ultraviolet lamp 6, and can still ensure effective irradiation of the target area (such as the plate 10).

[0051] One end of the connector 9 is electrically connected to the ultraviolet lamp tube 6 and can be covered on the opening 502 of the sleeve 5 (such as by snap-fit) to form a mechanical fixation; at the same time, as one implementation scheme, the connector 9 also has an external plug, which is used as a transfer interface to connect the external circuit with the circuit of the ultraviolet lamp tube 6 to realize power supply.

[0052] Regarding the circuit connection between connector 9 and the UV lamp, the following solution is provided: The UV lamp tube 6 integrates a waterproof plug with three metal pins (corresponding to the live, neutral, and ground wires respectively). The plug shell is made of corrosion-resistant ABS material with a waterproof coating. Connector 9 has a pre-installed 3-hole socket matching the plug. The socket contacts are made of copper elastic structure to ensure tight contact after insertion. The socket connects to the circular waterproof interface (female connector) on the outside of connector 9 via an internal wire (105℃ heat-resistant silicone wire), with an O-ring rubber seal at the interface. An external power supply line (e.g., 220V AC) is connected to a male connector matching the female connector of connector 9. The male connector has threads on the outside, allowing it to be tightened with the female connector for enhanced waterproofing. A miniature circuit breaker (e.g., 16A overload protection) and a time relay are connected in series in the power supply line. The time relay can preset the lamp's operating time (e.g., automatically starting and stopping according to the water treatment process) to improve safety.

[0053] During installation, first insert the plug of the UV lamp tube 6 into the internal socket of the connector 9. A "click" sound indicates that the circuit is connected and initially fixed. Insert the lamp tube into the inclined sleeve 5 and push it to the designated position. Then, snap the connector 9 onto the opening 502 of the sleeve 5 (the snap engages with the groove on the outer wall of the sleeve 5). Finally, screw the male connector of the external power supply line into the female connector of the connector 9 and tighten it to a sealed state to complete the overall circuit connection.

[0054] The above-described solution is a reference for implementing circuit connection and is not the focus of this application. Therefore, it is not shown in the accompanying drawings. In addition, there are many other technical solutions that can achieve circuit connection, which are not limited here.

[0055] In some examples, the opening 405 of the housing 4 provides a channel for inserting and removing the plate 10, which facilitates the installation and replacement of the plate 10. The grip part 1001 of the plate 10 is located on the outside of the housing 4. The operator can perform the insertion and removal of the plate 10 by gripping this part without having to go deep into the housing 4, thus simplifying the operation process.

[0056] The guide section 406 inside the housing 4 is provided with a guide groove 407 to accommodate the side of the plate 10. When the plate 10 is inserted, it slides along the guide groove 407 to ensure accurate installation. The guide groove 407 is arranged at an angle along the height direction and the angle is parallel to the sleeve 5 (including the ultraviolet lamp 6) to keep the relative position of the plate 10, the sleeve 5, and the ultraviolet lamp 6 stable, and to ensure uniform irradiation of the titanium dioxide coating on the surface of the plate 10 by ultraviolet light.

[0057] The gripping part 1001 of the plate 10 is provided with a first insertion hole 1002, and the insertion plate 408 on the outside of the housing 4 is provided with a corresponding second insertion hole 409. By passing fasteners 11 (such as bolts or pins) through the two holes, the plate 10 can be fixed to the housing 4 to prevent the plate 10 from loosening during equipment operation. When disassembling, simply remove the fasteners 11, and the plate 10 can be pulled out through the gripping part 1001.

[0058] In some examples, the frame 12 is movably disposed within the processing chamber 401, with several collars slidingly fitted around the outer periphery of the sleeve 5. When the frame 12 moves within the processing chamber 401, the inner walls of the collars contact and rub against the outer periphery of the sleeve 5, thereby removing impurities, scale, or contaminants adhering to the surface of the sleeve 5, preventing these substances from blocking ultraviolet light and ensuring the transmission efficiency of ultraviolet light. A linear drive component 13 (such as an electric push rod, cylinder, lead screw slide, etc.) is mounted on the housing 4, and its output end is connected to the frame 12, which can drive the frame 12 to reciprocate along the length of the sleeve 5, causing the collars to complete a comprehensive cleaning of the outer periphery of the sleeve 5, achieving automated cleaning without manual intervention. Because the sleeve 5 is arranged at an angle along the height direction, the movement trajectory of the frame 12 is adapted to the angle direction of the sleeve 5, and the collars can always fit against the outer periphery of the sleeve 5, ensuring that there are no dead corners in the cleaning.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dual-effect catalytic oxidation device, characterized in that, include: A feed pipe (1) is used to transport water. An injection pipe (2) is provided on the side wall of the feed pipe (1) and communicates with the inside of the feed pipe (1). The injection pipe (2) is used to inject a medicine into the feed pipe (1). The housing (4) has a processing chamber (401) communicating with the feed pipe (1), the processing chamber (401) being used to receive the mixed agent and water; Plate (10), the plate (10) is disposed on the side wall of the box (4) and located in the processing cavity (401), the surface of the plate (10) has a titanium dioxide coating; The sleeve (5) is disposed on the side wall of the box (4) and located in the processing cavity (401). The sleeve (5) is made of transparent material and has a cavity (501) inside. Ultraviolet lamp (6), which is disposed in the cavity (501), is used to irradiate the titanium dioxide coating on the surface of the plate (10) as well as the mixed reagent and water.

2. The dual-effect catalytic oxidation device according to claim 1, characterized in that, Also includes: A filter screen (7) is disposed inside the feed pipe (1) at one end near the housing (4).

3. The dual-effect catalytic oxidation device according to claim 1, characterized in that, Also includes: A mixing shaft (3) is rotatably mounted on the side wall of the feed pipe (1) and located inside the feed pipe (1), and can mix the medicine and water by rotating. The mixing shaft (3) includes a main shaft (301) and spiral blades (302) disposed around the main shaft (301).

4. The dual-effect catalytic oxidation device according to claim 1, characterized in that, The box (4) has an inlet (402) and an outlet (404), and the water treatment area (403) is between the inlet (402) and the outlet (404). The plate (10), the sleeve (5) and the ultraviolet lamp (6) are all located in the water treatment area (403).

5. The dual-effect catalytic oxidation device according to claim 1, characterized in that, From the inlet (402) to the water treatment area (403), the inner diameter gradually increases; from the water treatment area (403) to the outlet (404), Its inner diameter gradually decreases.

6. The dual-effect catalytic oxidation device according to claim 1, characterized in that, The sleeve (5) and the ultraviolet lamp (6) form a set of irradiation tubes (8), and at least one set of irradiation tubes (8) is provided above and below each of the plates (10).

7. The dual-effect catalytic oxidation device according to claim 1, characterized in that, The sleeve (5) is arranged obliquely on the box (4), and one end of the sleeve (5) has a pipe opening (502). It also includes: A connector (9) is used to electrically connect with the ultraviolet lamp tube (6) and can be covered on the tube opening (502).

8. The dual-effect catalytic oxidation device according to claim 1, characterized in that, The housing (4) has a through-hole (405) for inserting and removing the plate (10); The housing (4) is provided with a guide part (406) inside, and the guide part (406) has a guide groove (407) for accommodating the side of the plate (10); The plate (10) also has a grip (1001) located on the outside of the housing (4), and the grip (1001) has a first insertion hole (1002). The outer side wall of the housing (4) is also provided with a plug plate (408). The plug plate (408) is located on one side of the opening (405) and has a second plug hole (409) corresponding to the first plug hole (1002). The housing (4) and the plate (10) are connected by fasteners (11) that pass through the first plug hole (1002) and the second plug hole (409).

9. The dual-effect catalytic oxidation device according to claim 1, characterized in that, The guide groove (407) is arranged at an angle, and its angle is parallel to the angle of the sleeve (5).

10. A dual-effect catalytic oxidation device according to claim 1, characterized in that, Also includes: The frame (12) is movably disposed within the processing chamber (401). The frame (12) has a plurality of collars that are slidably sleeved on the outer periphery of the sleeve (5). The frame (12) can move and clean the outer periphery of the sleeve (5) through the collars. A linear drive (13) is disposed on the housing (4) and is used to drive the frame (12) to move.

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