HEPA filter, sewage tank and cleaning equipment

Abstract

The utility model is applicable to the technical field of surface cleaning equipment, in particular to an HEPA (High Efficiency Particulate Air) filter, which comprises a shell and an HEPA arranged in the shell, one side of the shell is provided with a rubber coating part, the periphery of the rubber coating part is provided with a convex eave part which protrudes out of the side wall of the corresponding shell, and one side of the convex eave part, which faces the shell, is provided with a sealing groove. The HEPA filter is used for solving the problem that in the prior art, when an HEPA filter is installed, the sealing performance is poor, the utility model further discloses a sewage tank and cleaning equipment applying the HEPA filter, and therefore the same beneficial effects are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface cleaning equipment, and in particular relates to a HEPA filter, a sewage tank and cleaning equipment. Background Art

[0002] Common surface cleaning equipment includes: floor cleaning equipment (such as floor scrubbers, smart sweeping robots, vacuum cleaners), table cleaning equipment and wall cleaning equipment (such as glass cleaning machines), etc. Most of the above surface cleaning equipment adopts a water suction working mode, that is, the suction motor generates suction, and the sewage and dirt generated during cleaning are sucked into a sewage tank for storage through the sewage suction channel. This type of cleaning equipment usually has at least one HEPA filter in the air suction channel connected between the suction motor and the sewage suction channel, which is used to filter the water vapor and debris mixed in the suction airflow to prevent damage to the suction motor.

[0003] There is a type of floor scrubber on the market, in which the HEPA filter is detachably mounted on the sewage tank, and the sewage tank is detachably mounted on the floor scrubber body, wherein the sewage tank is provided with a receiving slot for mounting the HEPA filter, the HEPA filter is embedded in the receiving slot, and the HEPA filter is provided with a rubber coating layer, through which the HEPA filter and the receiving slot are sealed, and the rubber coating layer is also used for sealing the connection between the HEPA filter and the floor scrubber body, such as Chinese patent CN111358344A, a recycling barrel, filter assembly and cleaning device. However, the sealing performance of the rubber coating structure of the existing HEPA filter is not good, so it is necessary to improve this. Utility Model Content

[0004] One of the purposes of the utility model is to provide a HEPA filter, aiming to solve the technical problem of poor sealing of the existing HEPA filter.

[0005] The technical solution of the utility model is implemented as follows: a HEPA filter comprises a shell and a HEPA arranged in the shell, characterized in that a rubber-coated portion is provided on one side of the shell, a convex portion protruding from the corresponding side wall of the shell is provided around the rubber-coated portion, and a sealing groove is provided on the side of the convex portion facing the shell.

[0006] Optionally, a sealing flange is provided on a side of the rubber-coated portion facing away from the outer shell, and the sealing flange on the corresponding side of the rubber-coated portion is arranged to extend toward the outer side of the outer shell.

[0007] Optionally, the sealing flange on one side of the rubber-coated portion includes a first main body located at an inner end connected to the rubber-coated portion and a second main body located at an outer end connected to the first main body, and the second main body is closer to the shell side than the first main body.

[0008] Optionally, the sealing flange on one side of the rubber-coated portion further includes a connecting portion bent and extended toward the shell, wherein the connecting portion connects the sealing flange and the rubber-coated portion.

[0009] Optionally, at least one step portion is exposed on a side of the shell where the rubber-covered portion is provided.

[0010] Another object of the utility model is to provide a sewage tank, comprising a tank body and a tank cover arranged on the tank body, the tank cover being provided with an air intake channel, and also comprising a HEPA filter, the air intake channel being arranged at the upper part of the tank cover to be adapted to the size of the HEPA filter, and the air intake channel being arranged at the upper end opening of the tank cover, an upwardly convex sealing protrusion being arranged on the tank cover at the peripheral side of the upper end opening of the air intake channel, the HEPA filter being arranged as any of the above-described HEPA filters, the HEPA filter being embedded in the air intake channel at the upper part of the tank cover, and the sealing protrusion being embedded in the sealing groove.

[0011] Another object of the utility model is to provide a cleaning device, comprising a body, wherein the body is provided with a mounting groove, wherein a sewage tank is detachably mounted in the mounting groove, and the sewage tank is configured as the sewage tank described above.

[0012] The HEPA filter of the utility model is provided with a convex eave and a sealing groove on one side of the convex eave. When assembled and used, the convex eave is used as the first sealing structure and the sealing groove is used as the second sealing structure. Therefore, the HEPA filter of the utility model has a double sealing effect and good sealing performance.

[0013] The sewage tank and cleaning equipment of the utility model have the same beneficial effects because they apply the above-mentioned HEPA filter.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a sewage tank provided by an embodiment of the utility model when installed on a fuselage body;

[0016] Figure 2 A three-dimensional view of a sewage tank provided by an embodiment of the utility model when it is removed from the fuselage body;

[0017] Figure 3 A three-dimensional view of the HEPA filter provided in an embodiment of the utility model when it is removed from the sewage tank;

[0018] Figure 4 A three-dimensional diagram of a HEPA filter provided in an embodiment of the utility model;

[0019] Figure 5A cross-sectional view of a HEPA filter provided in an embodiment of the utility model;

[0020] Figure 6 A three-dimensional diagram of a box cover provided by an embodiment of the utility model;

[0021] Figure 7 A cross-sectional view of the HEPA filter provided in an embodiment of the utility model when installed;

[0022] Figure 8 A partial cross-sectional view of a sewage tank provided in an embodiment of the utility model during installation.

[0023] The names and numbers of the components in the figure are:

[0024] 1. Main body; 2. Sewage tank; 3. HEPA filter; 11. Mounting groove; 12. Abutment block; 21. Box body; 22. Box cover; 23. Air intake channel; 24. Sealing protrusion; 25. First limiting protrusion; 31. Shell; 32. Rubber-coated part; 33. Eaves part; 34. Sealing groove; 35. Step part; 111. Upper groove wall; 321. Sealing flange; 322. Connecting part; 3211. First main body; 3212. Second main body. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] Please refer to the attached Figure 1-8 As shown, a cleaning device provided by an embodiment of the utility model includes a body 1, on which a mounting groove 11 is provided, and a sewage tank 2 is detachably mounted. Specifically, the mounting groove 11 is arranged to extend along the axial direction of the body 1, and when the body 1 is placed vertically, the lower groove wall of the mounting groove 11 is arranged roughly horizontally, and the upper groove wall 111 of the mounting groove 11 is arranged to be inclined and divergent outwards; the sewage tank 2 is set to a shape that is compatible with the mounting groove 11, so that when the sewage tank 2 is installed in the mounting groove 11, it just fills the mounting groove 11 and is adapted to the contour of the body 1.

[0027] The sewage tank 2 includes a box body 21 and a box cover 22 covered on the box body 21, an air intake channel 23 is provided on the box cover 22, and also includes a HEPA filter 3. The air intake channel 23 is set at the upper part of the box cover 22 to be adapted to the size of the HEPA filter 3, and the air intake channel 23 is set at the upper end opening of the box cover 22. The HEPA filter 3 is embedded in the air intake channel 23 at the upper part of the box cover 22 from the upper end opening of the above-mentioned air intake channel 23.

[0028] The HEPA filter 3 comprises a housing 31 and a HEPA filter disposed in the housing 31. A rubber-encapsulated portion 32 is disposed on one side of the housing 31. A convex portion 33 protruding from the corresponding side wall of the housing 31 is disposed around the rubber-encapsulated portion 32. A sealing groove 34 is disposed on the side of the convex portion 33 facing the housing 31. To match this, a sealing protrusion 24 protruding upward is disposed on the box cover 22 at the peripheral side of the upper end opening of the air intake passage 23. When the HEPA filter 3 is assembled into the air intake passage 23, the sealing protrusion 24 is embedded in the sealing groove 34. It should be noted that when the HEPA filter 3 is assembled on the box cover 22 of the sewage tank 2, first, the rubber-coated portion 32 on the HEPA filter 3 will directly abut against the channel wall of the air intake channel 23, thereby achieving a sealing effect; at the same time, due to the cooperation between the sealing protrusion 24 and the sealing groove 34, the sealing effect of the connection between the HEPA filter 3 and the air intake channel 23 is further achieved; therefore, the HEPA filter 3 of the utility model has a double sealing effect with the air intake channel 23, and the sealing performance is good after assembly. It is understandable that the mutual cooperation structure of the sealing groove 34 respectively arranged on the convex eaves 33 and the sealing protrusion 24 on the box cover 22 on the upper end opening side of the air intake channel 23, in other embodiments, can also be set as a sealing protrusion 24 on the convex eaves 33, and a sealing groove 34 adapted thereto can be set on the box cover 22 on the upper end opening side of the air intake channel 23.

[0029] The side of the rubber-coated part 32 facing away from the shell 31 is provided with a sealing flange 321, and the sealing flange 321 on the corresponding side of the rubber-coated part 32 is set to extend in the direction of the outer side of the shell 31. When the sewage tank 2 is installed in the installation groove 11, the sealing flange 321 abuts against the upper groove wall 111 of the installation groove 11 to achieve sealing. It can be understood that in daily use, the assembly method of the sewage tank 2 is to rotate into or out of the installation groove 11 with the bottom of the sewage tank 2 as the rotation axis. Therefore, when the sewage tank 2 is assembled, the sealing flange 321 located on the inner side is easy to scrape the upper groove wall 111 of the installation groove 11 and turn up, affecting the sealing effect; when the sewage tank 2 is disassembled, the sealing flange 321 located on the outer side is easy to scrape the upper groove wall 111 of the installation groove 11 and turn up, affecting the service life of the sealing flange 321.

[0030] Therefore, in one specific embodiment, the sealing flange 321 on one side (i.e., the front side) of the rubber-encapsulated portion 32 includes a first main body 3211 located at the inner end and connected to the rubber-encapsulated portion 32, and a second main body 3212 located at the outer end and connected to the first main body 3211, and the second main body 3212 is closer to the side of the housing 31 than the first main body 3211. In this way, the first main body 3211 can be used to achieve the abutment between the sealing flange 321 on this side and the upper groove wall 111 of the installation groove 11 after installation to achieve sealing, and the second main body 3212 is set to be closer to the side of the housing 31 than the first main body 3211, that is, the distance between the edge of the sealing flange 321 on this side and the upper groove wall 111 is increased, thereby reducing the probability that the outer sealing flange 321 is easily scraped against the upper groove wall 111 of the installation groove 11 and turned up when the sewage tank 2 is disassembled.

[0031] In another specific embodiment, the sealing flange 321 on one side (i.e., the rear side) of the rubber-encased portion 32 further includes a connecting portion 322 that is bent and extended toward the shell 31, and the connecting portion 322 connects the sealing flange 321 and the rubber-encased portion 32. By providing the connecting portion 322, the sealing flange 321 on this side (rear side) is connected to the rubber-encased portion 32 as a whole through the connecting portion 322, which is equivalent to the sealing flange 321 on this side (rear side) having no free edge, thereby preventing the sealing flange 321 on the inner side from scraping the upper groove wall 111 of the mounting groove 11 and flipping up when the sewage tank 2 is assembled.

[0032] In addition, a first limiting protrusion 25 is provided on the side wall of the air intake passage 23 at the upper part of the box cover 22, and a second limiting protrusion is provided on the housing 31 of the HEPA filter 3. The first limiting protrusion 25 and the second limiting protrusion are set as matching arc-shaped staggered arc-surface protrusions. When the HEPA filter 3 is set in the air intake passage 23, the first limiting protrusion 25 and the second limiting protrusion are staggered and abutted. It should be noted that the protruding heights of the first limiting protrusion 25 and the second limiting protrusion should be properly designed to meet the requirements that the first limiting protrusion 25 and the second limiting protrusion can achieve spanning and clamping when the HEPA filter 3 is assembled. The first limiting protrusion 25 and the second limiting protrusion are staggered and abutted so that the installed HEPA filter 3 is clamped in the air intake passage 23 without falling naturally. When the HEPA filter 3 needs to be disassembled, the operator only needs to use appropriate force to separate the first limiting protrusion 25 from the second limiting protrusion, thereby disassembling the HEPA filter 3.

[0033] An abutment block 12 is provided on the upper groove wall 111 of the installation groove 11, and the shell 31 exposes at least one step portion 35 on the side where the rubber-coated portion 32 is provided. When the sewage tank 2 is installed in the installation groove 11, the abutment block 12 abuts against the step portion 35. The mutual abutment between the abutment block 12 and the step portion 35 fixes the relative position of the HEPA filter 3 after the sewage tank 2 is installed in the installation groove 11, thereby providing a more reliable sealing effect. It should be noted that the height of the abutment block 12 cannot be too high so as to affect the disassembly of the sewage tank 2. Therefore, the relative position of the step portion 35 and the abutment block 12 should be considered during design. In this embodiment, it is appropriate that the step portion 35 is provided on the shell 31 on the front side of the HEPA filter 3, and the abutment block 12 is provided at a corresponding position.

[0034] In summary, the Hypa filter 3 of the present invention is provided with a convex flange 33 and a sealing groove 34 on one side of the convex flange 33. When assembled and used, the convex flange 33 is used as a first sealing structure, and the sealing groove 34 is used as a second sealing structure. Therefore, the Hypa filter 3 of the present invention has a double sealing effect and good sealing performance. The sewage tank 2 and the cleaning equipment of the present invention have the same beneficial effects because they use the above-mentioned Hypa filter 3.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A HEPA filter, comprising a housing and a HEPA disposed in the housing, characterized in that: A rubber-covered portion is provided on one side of the shell, and a convex portion protruding from the corresponding side wall of the shell is provided around the rubber-covered portion. A sealing groove is provided on the side of the convex portion facing the shell.

2. The HEPA filter according to claim 1, characterized in that: A sealing flange is provided on a side of the rubber-coated portion facing away from the shell, and the sealing flange on the corresponding side of the rubber-coated portion is arranged to extend toward the outer side of the shell.

3. The HEPA filter according to claim 2, characterized in that: The sealing flange on one side of the rubber-encapsulated portion includes a first main body located at an inner end connected to the rubber-encapsulated portion and a second main body located at an outer end connected to the first main body, wherein the second main body is closer to the shell side than the first main body.

4. The HEPA filter according to claim 2, characterized in that: The sealing flange on one side of the rubber-coated portion further includes a connecting portion that bends and extends toward the shell, and the connecting portion connects the sealing flange and the rubber-coated portion.

5. The HEPA filter according to claim 1, characterized in that: The shell has at least one step portion exposed on one side where the rubber-covered portion is provided.

6. A sewage tank, comprising a tank body and a tank cover arranged on the tank body, wherein the tank cover is provided with an air suction channel, characterized in that: It also includes a HEPA filter, wherein the air intake channel is configured at the upper part of the box cover to be adapted to the size of the HEPA filter, and the air intake channel is opened at the upper end of the box cover, and an upwardly convex sealing protrusion is provided on the box cover around the upper end opening of the air intake channel, and the HEPA filter is configured as the HEPA filter as described in any one of claims 1 to 5, and the HEPA filter is embedded in the air intake channel at the upper part of the box cover, and the sealing protrusion is embedded in the sealing groove.

7. The sewage tank according to claim 6, characterized in that: A first limiting protrusion is provided on the side wall of the air intake channel on the upper part of the box cover, and a second limiting protrusion is provided on the outer shell of the HEPA filter. The first limiting protrusion and the second limiting protrusion are configured as matching arc-shaped staggered arc-surface protrusions. When the HEPA filter is disposed in the air intake channel, the first limiting protrusion and the second limiting protrusion are staggered and abutted.

8. A cleaning device, comprising a main body, wherein the main body is provided with a mounting groove, wherein a sewage tank is detachably mounted on the mounting groove, wherein: The sewage tank is configured as the sewage tank according to claim 6 or 7.

9. The cleaning device according to claim 8, characterized in that An abutment block is provided on the upper groove wall of the installation groove, and the HEPA filter of the sewage tank adopts the HEPA filter described in claim 5. When the sewage tank is installed in the installation groove, the abutment block abuts against the step portion.

10. The cleaning device according to claim 8, characterized in that When the HEPA filter adopts the HEPA filter described in claim 3, the sealing flange including the first body and the second body is located on the side facing outside the mounting groove; when the HEPA filter adopts the HEPA filter described in claim 4, the sealing flange including the connecting part is located on the side facing inside the mounting groove.

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