Filtering device for cleaning equipment and cleaning equipment

Abstract

The utility model discloses a filtering device for cleaning equipment and the cleaning equipment, the filtering device comprises a base, a water collecting cavity, a centrifugal cavity and a residue collecting cavity are formed in the base, the water collecting cavity is suitable for being communicated with the cleaning equipment, the centrifugal cavity is communicated with the water collecting cavity, and the residue collecting cavity is communicated with the centrifugal cavity; the centrifugal filter screen is contained in the centrifugal cavity, the centrifugal filter screen is suitable for filtering impurities flowing through the centrifugal filter screen, and the upstream side of the centrifugal filter screen is communicated with the slag collecting cavity; and the air exhausting device is used for communicating the centrifugal cavity with external air so as to balance the air pressure of the centrifugal cavity. The filtering device provided by the utility model can filter circulating water of cleaning equipment, prevents impurities in the water from polluting tableware, balances the pressure in the centrifugal cavity by arranging the exhaust device in the centrifugal cavity, and prevents the filtering effect from being influenced by overlarge pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a filtering device for cleaning equipment and the cleaning equipment. Background Art

[0002] In the related art, dishwashers and other cleaning equipment use internal circulating water for jet cleaning when cleaning tableware to reduce water consumption. During the cleaning process, as food residues accumulate, the filter will be blocked by the residues, affecting the cleaning effect. In the existing internal circulation system, the residues are constantly washed away by the circulating water, and small particles of residues will enter the circulating water and be brought to the tableware to cause pollution. Therefore, how to optimize the filtering structure of the cleaning setting and improve the filtering effect of the residues has become an urgent problem to be solved in this field. Utility Model Content

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a filter device for use in cleaning equipment. The filter device disclosed in the present invention can filter the circulating water of the cleaning equipment to prevent contamination of tableware by impurities in the water. By providing an exhaust device within the centrifugal chamber to balance the pressure within the centrifugal chamber, the device prevents excessive pressure from affecting the filtration effect.

[0004] The utility model also provides a cleaning device with the filtering device.

[0005] According to the utility model, the filtering device for cleaning equipment includes: a base, in which a water collecting chamber, a centrifugal chamber and a slag collecting chamber are formed, the water collecting chamber is suitable for being communicated with the cleaning equipment, the centrifugal chamber is communicated with the water collecting chamber, and the slag collecting chamber is communicated with the centrifugal chamber; a centrifugal filter screen, the centrifugal filter screen is accommodated in the centrifugal chamber and the centrifugal filter screen is suitable for filtering impurities flowing through the centrifugal filter screen, and the upstream side of the centrifugal filter screen is communicated with the slag collecting chamber; an exhaust device, which connects the centrifugal chamber with the external air to balance the air pressure in the centrifugal chamber.

[0006] According to the utility model, the filtering device for cleaning equipment forms a water collecting chamber, a centrifugal chamber and a residue collecting chamber on the base, and a centrifugal filter is arranged in the centrifugal chamber to collect circulating water and filter the circulating water to prevent impurities from remaining in the circulating water and causing secondary contamination of tableware. The filtered impurities can flow into the residue collecting chamber; the present application connects the centrifugal chamber with the external air by arranging an exhaust device to balance the pressure in the centrifugal chamber, avoid excessive pressure in the centrifugal chamber during the filtration process, ensure smooth flow of water during the filtration process, ensure stable operation of the cleaning equipment, and avoid excessive pressure affecting the filtration effect.

[0007] According to some embodiments of the present invention, an exhaust hole is formed on the base and located on the wall surface of the centrifugal chamber. The exhaust hole connects the centrifugal chamber with the outside and is constructed as the exhaust device.

[0008] According to some embodiments of the present invention, the water collecting chamber is arranged adjacent to the centrifugal chamber, a partition wall is formed on the base between the centrifugal chamber and the water collecting chamber, a through hole connecting the centrifugal chamber and the water collecting chamber is formed on the partition wall, and the exhaust hole is formed on the partition wall.

[0009] According to some embodiments of the present invention, the exhaust hole is located at the top of the via hole.

[0010] According to some embodiments of the present invention, the distance between the exhaust hole and the top wall of the centrifugal chamber is H1, the height of the centrifugal chamber is H2, and the relationship H1 / H2≤1 / 3 is satisfied.

[0011] According to some embodiments of the present invention, the cross-sectional area of ​​the exhaust hole is S, and satisfies: S ≥ 4 mm 2 .

[0012] According to some embodiments of the present invention, the size of the exhaust hole in the height direction is h, and the size of the exhaust hole in the horizontal direction is d, and the following condition is satisfied: h<d.

[0013] According to some embodiments of the present invention, the centrifugal filter is cylindrical in structure and is rotatably disposed in the centrifugal chamber.

[0014] According to some embodiments of the present invention, the filtering device further includes: a flow-disturbing component, which is protruding from the upstream side of the centrifugal filter; and / or the flow-disturbing component protrudes from the wall of the centrifugal chamber; and / or the flow-disturbing component is movably arranged between the upstream side of the centrifugal filter and the wall of the centrifugal chamber.

[0015] The following briefly describes a cleaning device according to another embodiment of the present invention.

[0016] The cleaning device according to the present invention includes the filtering device described in any one of the above embodiments, and the cleaning device can be constructed as a dishwasher. Since the cleaning device according to the present invention includes the filtering device described in any one of the above embodiments, the cleaning device can filter the cleaning water to prevent residual impurities in the water from contaminating the tableware, thereby improving the cleaning effect.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a top cross-sectional view of a filter device according to some embodiments of the present invention;

[0020] Figure 2 is an internal cross-sectional view of a filter device according to some embodiments of the present invention;

[0021] Figure 3 Schematic diagram of the water collection chamber and centrifugal chamber structure of the filtration device according to some embodiments of the present invention;

[0022] Figure 4 Schematic diagram of the water collection chamber and centrifugal chamber structure of the filtration device according to some embodiments of the present invention;

[0023] Figure 5 is a structural diagram of a centrifugal filter screen of a filtration device according to some embodiments of the present utility model;

[0024] Figure 6 It is a schematic diagram of the base structure of the filtering device according to some embodiments of the present utility model.

[0025] Reference numerals:

[0026] Filter device 1;

[0027] Base 11;

[0028] Water collecting chamber 12; centrifugal chamber 13; slag collecting chamber 14;

[0029] Centrifugal filter 15; partition wall 16, through hole 161, exhaust hole 162; spoiler 17. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the related art, dishwashers and other cleaning equipment use internal circulating water for jet cleaning when cleaning tableware to reduce water consumption. During the cleaning process, as food residues accumulate, the filter will be blocked by the residues, affecting the cleaning effect. In the existing internal circulation system, the residues are constantly washed away by the circulating water, and small particles of residues will enter the circulating water and be brought to the tableware to cause pollution. Therefore, how to optimize the filtering structure of the cleaning setting and improve the filtering effect of the residues has become an urgent problem to be solved in this field.

[0032] Reference below Figures 1-6 A filtering device for cleaning equipment according to an embodiment of the present invention is described.

[0033] According to the utility model, the filtering device 1 for cleaning equipment includes: a base 11, in which a water collecting chamber 12, a centrifugal chamber 13 and a slag collecting chamber 14 are formed, the water collecting chamber 12 is suitable for being communicated with the cleaning equipment, the centrifugal chamber 13 is communicated with the water collecting chamber 12, and the slag collecting chamber 14 is communicated with the centrifugal chamber 13; a centrifugal filter screen 15, the centrifugal filter screen 15 is accommodated in the centrifugal chamber 13 and the centrifugal filter screen 15 is suitable for filtering impurities flowing through the centrifugal filter screen 15, and the upstream side of the centrifugal filter screen 15 is communicated with the slag collecting chamber 14; an exhaust device, the exhaust device connects the centrifugal chamber 13 with the external air to balance the air pressure in the centrifugal chamber 13.

[0034] Specifically, the base 11 is arranged at the bottom of the cleaning equipment for receiving cleaning water for the cleaning equipment, and a water collecting chamber 12, a centrifugal chamber 13 and a slag collecting chamber 14 are formed inside the base 11, wherein the water collecting chamber 12 is directly connected to the cleaning equipment and is responsible for collecting the mixed liquid containing impurities and water discharged from the cleaning equipment; the centrifugal chamber 13 is connected to the water collecting chamber 12, and a centrifugal filter 15 is arranged in the centrifugal chamber 13, and the centrifugal filter 15 is rotatably and detachably arranged in the centrifugal chamber 13. When the mixed liquid containing impurities passes through the centrifugal filter 15, the impurities can be separated by the centrifugal filter 15, effectively intercepting and separating the impurities in the liquid to prevent the impurities from entering the downstream water pump and other structures. After the filtration is completed, the centrifugal filter 15 can be taken out for cleaning, or the centrifugal filter 15 can be rotated to separate the impurities on the surface to avoid impurities accumulating on the surface of the centrifugal filter 15 and affecting the filtration effect.

[0035] The slag collection chamber 14 is connected to the centrifugal chamber 13 and is used to collect impurities separated during the centrifugal process, ensuring that the cleaned liquid can be further processed or discharged. The upstream side of the centrifugal filter 15 is connected to the slag collection chamber 14, allowing the separated impurities to enter the slag collection chamber 14 directly, avoiding impurity backflow and re-contamination, and ensuring that the impurities can be discharged.

[0036] The main function of the exhaust device is to connect the centrifugal chamber 13 with the outside air to maintain the air pressure balance inside the centrifugal chamber 13. During the filtration process, with the continuous accumulation of impurities and the flow of liquid, the air pressure inside the centrifugal chamber 13 may change. If the air pressure inside the centrifugal chamber 13 is too high, it may affect the filtration effect or even damage the equipment. Therefore, the centrifugal chamber 13 is connected to the outside air by providing an exhaust device. The exhaust device can be constructed as an exhaust pump, an exhaust pipe or an exhaust hole 162, etc., to connect the centrifugal chamber 13 with the external atmospheric pressure, thereby balancing the internal pressure of the centrifugal chamber 13 and ensuring the smooth progress of the filtration process and the stable operation of the equipment.

[0037] According to the utility model, the filtering device 1 for cleaning equipment forms a water collecting chamber 12, a centrifugal chamber 13 and a residue collecting chamber 14 on the base 11, and a centrifugal filter 15 is provided in the centrifugal chamber 13 to collect circulating water and filter the circulating water to prevent impurities from remaining in the circulating water and causing secondary contamination of the tableware. The filtered impurities can flow into the residue collecting chamber 14; the present application connects the centrifugal chamber 13 with the external air by providing an exhaust device to balance the pressure in the centrifugal chamber 13, avoid excessive pressure in the centrifugal chamber 13 during the filtration process, ensure smooth flow of water during the filtration process, ensure stable operation of the cleaning equipment, and avoid excessive pressure affecting the filtration effect.

[0038] According to some embodiments of the present invention, an exhaust hole 162 is formed on the base 11 and located on the wall of the centrifugal chamber 13 . The exhaust hole 162 connects the centrifugal chamber 13 with the outside and is configured as an exhaust device.

[0039] Specifically, vent 162 is located on the wall of centrifugal chamber 13. This ensures that vent 162 can effectively exhaust the gas within centrifugal chamber 13 while preventing it from causing unnecessary interference with the filtration process. Vent 162 acts as a direct exhaust device, connecting centrifugal chamber 13 to the outside air. When the gas pressure within centrifugal chamber 13 increases due to the filtration process, the high-pressure gas within centrifugal chamber 13 is rapidly discharged through vent 162, thereby maintaining the air pressure balance within centrifugal chamber 13.

[0040] Designing the exhaust device in the form of exhaust holes 162 significantly simplifies the structure of filter device 1 and reduces manufacturing costs. By eliminating additional exhaust components, such as additional exhaust pipes, the likelihood of failure is reduced, improving the overall reliability of filter device 1. By eliminating exhaust holes 162 in centrifugal chamber 13, while maintaining air pressure balance in centrifugal chamber 13, the structure of the cleaning device is further simplified, improving its reliability and reducing costs.

[0041] According to some embodiments of the present invention, the water collecting chamber 12 and the centrifugal chamber 13 are arranged adjacent to each other, and a partition wall 16 is formed on the base 11 between the centrifugal chamber 13 and the water collecting chamber 12, and a through hole 161 is formed on the partition wall 16 to connect the centrifugal chamber 13 and the water collecting chamber 12, and an exhaust hole 162 is formed on the partition wall 16.

[0042] Specifically, the adjacent arrangement of the water collection chamber 12 and the centrifugal chamber 13 helps simplify the structure of the entire filter device 1, making the filter device 1 more compact and smaller, and reducing energy loss during liquid transmission. A partition wall 16 is formed on the base 11 between the centrifugal chamber 13 and the water collection chamber 12 to prevent mixing of liquid and impurities between the water collection chamber 12 and the centrifugal chamber 13. A through hole 161 is formed in the partition wall 16, connecting the centrifugal chamber 13 with the water collection chamber 12. Through hole 161 allows mixed liquid containing impurities to flow from the water collection chamber 12 into the centrifugal chamber 13 for filtration. An exhaust hole 162 is also provided on the partition wall 16. The exhaust hole 162 penetrates the thickness of the partition wall 16 to connect the centrifugal chamber 13 with the water collecting chamber 12. The water collecting chamber 12 is connected to the cleaning equipment to collect the circulating water of the cleaning equipment. The space in the water collecting chamber 12 is equivalent to being connected to the outside, and the air pressure is maintained at a low state. When impurities block the centrifugal filter 15, the gas in the centrifugal chamber 12 can be discharged into the water collecting chamber 12 through the exhaust hole 161, thereby ensuring that the pressure in the centrifugal chamber 13 will not be too high.

[0043] The adjacent arrangement of the water collecting chamber 12 and the centrifugal chamber 13 and the design of the partition wall 16 make the structure of the entire filter device 1 more compact; the design of the through hole 161 ensures that the mixed liquid can flow smoothly into the centrifugal chamber 13 for filtering treatment, and the mixed liquid in the water collecting chamber 12 flows into the centrifugal chamber 13 through the through hole 161, and the impurities in the mixed liquid are filtered by the centrifugal filter 15. As the impurities enter the centrifugal chamber 13 and accumulate on the surface of the centrifugal filter 15, the pressure in the centrifugal chamber 13 increases, and an exhaust hole 161 is provided on the partition wall 16 to discharge the high-pressure gas in the centrifugal chamber 13, so that the air pressure balance is more stable and reliable, thereby ensuring the filtering effect of the filter device 1.

[0044] According to some embodiments of the present invention, the exhaust hole 162 is located on the top of the via hole 161 .

[0045] Specifically, the exhaust hole 162 is set at the top of the through hole 161. When the liquid in the water collecting chamber 12 flows into the centrifugal chamber 13 through the through hole 161, the centrifugal filter 15 filters the impurities in the mixed liquid. As the impurities accumulated on the surface of the centrifugal filter 15 increase, the air pressure in the centrifugal chamber 13 increases, and the high-pressure gas accumulates at the top of the centrifugal chamber 13. The exhaust hole 162 at the top can quickly discharge the high-pressure gas, thereby more effectively maintaining the air pressure balance in the centrifugal chamber 13.

[0046] Providing the exhaust hole 162 at the top of the through hole 161 also makes the structural layout of the entire filter device 1 more compact and reasonable, helps to reduce the volume and weight of the filter device 1, and facilitates the installation of the filter device 1 in the cleaning equipment.

[0047] According to some embodiments of the present invention, the distance between the exhaust hole 162 and the top wall of the centrifugal chamber 13 is H1, the height of the centrifugal chamber 13 is H2, and the relationship H1 / H2≤1 / 3 is satisfied.

[0048] Specifically, as the pressure in the centrifugal chamber 13 increases, high-pressure gas accumulates at the top of the centrifugal chamber 13. The exhaust hole 162 is set at the top of the centrifugal chamber 13. The exhaust hole 162 near the top can quickly discharge the high-pressure gas, thereby more effectively maintaining the air pressure balance in the centrifugal chamber 13. If the exhaust hole 162 is too close to the bottom of the centrifugal chamber 13, it will affect the exhaust efficiency, thereby affecting the filtering effect of the filter device 1. The ratio of H1 and H2 satisfies H1 / H2≤1 / 3, which can ensure the air pressure balance in the centrifugal chamber 13 and improve the exhaust efficiency of the exhaust hole 162. At the same time, this ratio also avoids the exhaust hole 162 being too high and affecting the effect of balancing the air pressure, ensuring the efficient and stable operation of the filter device 1 in the cleaning equipment.

[0049] According to some embodiments of the present invention, the cross-sectional area of ​​the exhaust hole 162 is S, and satisfies: S ≥ 4 mm 2 .

[0050] Specifically, when the air pressure in the centrifugal chamber 13 rises, sufficient exhaust channel area is required to quickly discharge excess gas to maintain air pressure balance. The cross-sectional area of ​​the exhaust hole 162 directly determines its exhaust capacity. During the filtration process, tiny impurity particles may flow with the gas to the vicinity of the exhaust hole 162. If the cross-sectional area of ​​the exhaust hole 162 is too small, these impurity particles are more likely to gather and clog the exhaust hole 162. A larger cross-sectional area provides more channel space, reducing the possibility of clogging. The cross-sectional area of ​​the exhaust hole 162 is S, and meets the following requirements: S ≥ 4mm 2 , while ensuring the exhaust effect, the blockage of the exhaust hole 162 can be effectively avoided.

[0051] According to some embodiments of the present invention, the size of the exhaust hole 162 in the height direction is h, and the size of the exhaust hole 162 in the horizontal direction is d, and the following relationship is satisfied: h<d.

[0052] Specifically, exhaust holes 162 are designed to be larger horizontally than vertically, creating a wider exhaust channel. This allows gas to flow more smoothly through exhaust holes 162, reducing resistance and thus improving exhaust efficiency. The larger horizontal dimension provides more space within exhaust holes 162 for gas to pass through, which helps reduce the risk of impurity particles accumulating and clogging exhaust holes 162, thereby optimizing exhaust efficiency, reducing the risk of clogging, and improving structural stability.

[0053] According to some embodiments of the present invention, the centrifugal filter 15 is cylindrical in shape and rotatably disposed in the centrifugal chamber 13 .

[0054] Specifically, the cylindrical structure allows the centrifugal filter 15 to have a larger filtration area, thereby more effectively intercepting and removing impurities from the liquid. The cylindrical centrifugal filter 15 can generate a stable centrifugal effect during rotation. When liquid enters the centrifugal chamber 13 through its inlet, impurities in the liquid adhere to the surface of the centrifugal filter 15. The centrifugal force generated by the rotation of the centrifugal filter 15 ejects the impurities attached to the surface, preventing impurity accumulation and affecting its filtration capacity. Because the centrifugal filter 15 is rotatable, the magnitude of the centrifugal force can be controlled by adjusting its rotational speed. A larger centrifugal force can more thoroughly remove tiny impurity particles from the liquid, improving the cleaning effect. The cylindrical centrifugal filter 15 has a relatively simple structure, and because it is rotatable, it is easy to maintain and clean. When a large amount of impurities adhere to the filter surface, it can be cleaned by disassembling or inverting the filter to restore its filtration performance. The centrifugal filter 15 in the filter device 1 of the cleaning device is designed to be cylindrical and rotatably disposed within the centrifugal chamber 13. The centrifugal force generated by the rotation ejects impurities attached to the surface, preventing impurity accumulation and ensuring the filtration effect.

[0055] According to some embodiments of the present invention, the filter device 1 further includes: a flow-disturbing component 17, which is protruding from the upstream side of the centrifugal filter 15; and / or the flow-disturbing component 17 protrudes from the wall of the centrifugal chamber 13; and / or the flow-disturbing component 17 is movably arranged between the upstream side of the centrifugal filter 15 and the wall of the centrifugal chamber 13.

[0056] Specifically, the flow-disturbing component 17 can change the flow state of the fluid in the centrifugal chamber 13, increase the disturbance and turbulence of the fluid in the centrifugal chamber 13, and increase the disturbance of the fluid through the disturbance of the flow-disturbing component 17, so as to flush the impurities accumulated on the surface of the centrifugal filter 15 and reduce the problem of impurity deposition caused by liquid retention. The flow-disturbing component 17 can be set on the surface of the centrifugal filter 15 and located on the upstream side of the centrifugal filter 15. The mixed liquid enters the centrifugal chamber 13 from the water collection chamber 12. The flow-disturbing component 17 can directly stir the mixed liquid. The centrifugal force generated by the rotation of the centrifugal filter 15 can throw out the impurities attached to its surface. The flow-disturbing component 17 stirs the water flow and pushes the impurities into the slag collection chamber 14 to prevent the impurities from accumulating on the centrifugal filter 15 and affecting its filtering capacity. The flow-disturbing component 17 can be constructed as follows: Figure 4 and Figure 5 The blade structure shown in the figure has multiple blades surrounding and spaced apart on the outer periphery of the bottom of the centrifugal filter 15. The blades can rotate with the centrifugal filter 15 and stir the mixed liquid, pushing the mixed liquid to flow from the bottom to the top of the centrifugal filter 15, thereby flushing the surface of the centrifugal filter 15 and separating impurities from the filter; the spoiler 17 can also be set on the wall of the centrifugal chamber 13. During the rotation of the centrifugal filter 15, the spoiler 17 can push the mixed liquid to flow, thereby flushing the surface of the centrifugal filter 15 and discharging impurities into the slag collecting chamber 14; the spoiler 17 can be movably set on the centrifugal filter 15 and the wall of the centrifugal chamber 13 to further enhance the stirring effect on the mixed liquid, avoid impurities from accumulating on the surface of the centrifugal filter 15, and ensure the filtering effect of the centrifugal filter 15.

[0057] The cleaning device according to the present invention is briefly described below.

[0058] The cleaning device according to the present invention includes the filtering device 1 described in any one of the above embodiments, and the cleaning device can be constructed as a dishwasher. Since the cleaning device according to the present invention includes the filtering device 1 described in any one of the above embodiments, the cleaning device can filter the cleaning water to prevent residual impurities in the water from contaminating the tableware, thereby improving the cleaning effect.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0060] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0061] In the description of the present invention, “plurality” means two or more.

[0062] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0063] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0064] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filtering device for cleaning equipment, characterized in that: include: A base, wherein a water collecting chamber, a centrifugal chamber and a slag collecting chamber are formed in the base, the water collecting chamber is adapted to be communicated with a cleaning device, the centrifugal chamber is communicated with the water collecting chamber, and the slag collecting chamber is communicated with the centrifugal chamber; a centrifugal filter screen, the centrifugal filter screen being accommodated in the centrifugal chamber and being adapted to filter impurities flowing through the centrifugal filter screen, wherein the upstream side of the centrifugal filter screen is in communication with the slag collecting chamber; An exhaust device connects the centrifugal chamber to external air to balance the air pressure in the centrifugal chamber.

2. The filtering device for cleaning equipment according to claim 1, characterized in that: An exhaust hole is formed on the base and located on the wall surface of the centrifugal chamber. The exhaust hole connects the centrifugal chamber with the outside and is constructed as the exhaust device.

3. The filtering device for cleaning equipment according to claim 2, characterized in that: The water collecting chamber is arranged adjacent to the centrifugal chamber, a partition wall is formed on the base between the centrifugal chamber and the water collecting chamber, a through hole is formed on the partition wall for connecting the centrifugal chamber and the water collecting chamber, and the exhaust hole is formed on the partition wall.

4. The filtering device for cleaning equipment according to claim 3, characterized in that: The exhaust hole is located on the top of the via hole.

5. The filtering device for cleaning equipment according to claim 3, characterized in that: The distance between the exhaust hole and the top wall of the centrifugal chamber is H1, the height of the centrifugal chamber is H2, and the relationship H1 / H2≤1 / 3 is satisfied.

6. The filtering device for cleaning equipment according to claim 3, characterized in that: The cross-sectional area of ​​the exhaust hole is S, and satisfies: S ≥ 4mm 2 .

7. The filtering device for cleaning equipment according to claim 5, characterized in that: The size of the exhaust hole in the height direction is h, and the size of the exhaust hole in the horizontal direction is d, and the following condition is satisfied: h<d.

8. The filtering device for cleaning equipment according to claim 1, characterized in that: The centrifugal filter is cylindrical in structure and is rotatably disposed in the centrifugal chamber.

9. The filtering device for cleaning equipment according to claim 8, characterized in that: Also includes: a flow-disturbing component, the flow-disturbing component being protrudingly provided on the upstream side of the centrifugal filter; and / or the flow-disturbing component protrudes from the wall surface of the centrifugal chamber; And / or the flow-disturbing component can be movably arranged between the upstream side of the centrifugal filter and the wall surface of the centrifugal chamber.

10. A cleaning device, characterized in that: include: The filter device according to any one of claims 1 to 9.

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