Dust-gas separating and filtering system

Abstract

The utility model discloses a dust-gas separating and filtering system and relates to the technical field of dust-gas separation. According to the dust-gas separation and filtration system, an annular wall is arranged in a dust cup, and an inner cavity of the dust cup is divided into an inner cavity body and an outer cavity body; meanwhile, a flow guide piece is arranged on the filter screen cover, the flow guide piece, the annular wall and the filter screen cover body form a spiral flow guide air channel, airflow entering the inner cavity through the air inlet flows along the spiral flow guide air channel, and therefore unexpected substances mixed in the airflow enter the outer cavity through the separation opening under the action of centrifugal force to be collected. According to the dust-gas separating and filtering system, most unexpected substances can be collected in the outer cavity, so that the unexpected substances collected in the inner cavity are greatly reduced, the risk that the unexpected substances are raised again is reduced, the blocking speed of the filter screen is reduced, the aim of prolonging the replacement or cleaning interval of the filter screen is achieved, and the service life of the filter screen is prolonged. And the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust and gas separation, in particular to a dust and gas separation and filtering system. Background Art

[0002] As people's requirements for home cleanliness increase day by day, cleaning appliances have gradually become essential electrical equipment for furniture cleaning. Usually, cleaning appliances mainly include vacuum cleaners, dust removers, floor scrubbers, etc. This type of cleaning appliance mainly generates airflow through the motor, sucks the surface of the object and separates and filters the sucked airflow to achieve the purpose of cleaning.

[0003] The traditional dust and gas separation and filtration system mainly includes: a dust cup, a filter cover and a filter. The filter cover is arranged in the dust cup, the filter is arranged in the filter cover, and there is a gap between the filter cover and the inner wall of the dust cup, and the gap is connected to the air inlet on the dust cup. Through the suction of the motor, the airflow with dust, garbage and other undesirable substances enters from the air inlet, and the dust and gas are separated and filtered by the filter cover and the filter.

[0004] The dust and gas separation filtration system configured in this way will quickly accumulate unwanted substances in its dust cup, which can easily cause the incoming airflow to lift up the unwanted substances again, resulting in more unwanted substances being mixed in the airflow when entering the filter, causing the filter to be quickly blocked, ultimately resulting in the need to frequently replace or clean the filter, resulting in a poor user experience. Utility Model Content

[0005] The purpose of the utility model is to provide a dust and gas separation filtration system to address the defects and shortcomings of the prior art, which can effectively reduce the clogging rate of the filter screen, thereby extending the replacement or cleaning interval of the filter screen, and has the advantages of long filter screen replacement or cleaning intervals and good user experience.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A dust and gas separation and filtration system comprises: a dust cup, having an air inlet and an axially extending cavity, the inner side wall of one side of the dust cup protrudingly provided with a mounting ring, an annular wall provided in the cavity, one end of the annular wall being connected to one side of the mounting ring, and the other end extending axially away from the mounting ring, the annular wall cooperates with the mounting ring to divide the cavity into an inner cavity and an outer cavity, the air inlet passes through the outer cavity to communicate with the inner cavity, and a separation port connecting the inner cavity and the outer cavity is provided on the annular wall; a dust cup cover connected to the side of the dust cup away from the mounting ring, the dust cup away from the mounting ring side The end face of the filter cover and the end face of the annular wall away from the mounting ring are both in contact with the dust cup cover, so that the inner cavity and the outer cavity are independent of each other; a filter cover is installed in the inner cavity, and one end is detachably assembled with the mounting ring, the filter cover comprises a filter cover body and a guide plate arranged on the outer side wall of the filter cover body, the guide plate, the outer side wall of the filter cover body and the annular wall are arranged to form a spiral guide air duct, and the separation port is connected with the spiral guide air duct; and a filter screen is sealingly connected to the mounting ring, one end of the filter screen extends into the filter cover, and the other end is connected to the air inlet of an external fan.

[0008] In one embodiment, the filter cover has a channel with an axis passing through it, the filter cover body includes a large diameter section, a small diameter section and a transition section connecting the large diameter section and the small diameter section, the guide plate is arranged on the outer wall of the large diameter section, and the large diameter section has a filter portion on one side close to the small diameter section, the filter portion has a plurality of filter holes, and the airflow enters the channel through the filter holes.

[0009] In one of the embodiments, a snap-in groove is provided on the end face of the inner wall of the mounting ring away from the dust cup, and a snap-in block is provided on the outer wall of the large diameter section away from the filter hole, and the snap-in block is adapted to the snap-in groove; or, a snap-in block is provided on the end face of the inner wall of the mounting ring away from the dust cup, and a snap-in groove is provided on the outer wall of the large diameter section away from the filter hole, and the snap-in block is adapted to the snap-in groove.

[0010] In one of the embodiments, a limiting portion is provided in the clamping groove near one side of the annular wall, and the limiting portion is used to match with the clamping block to fix the filter cover.

[0011] In one of the embodiments, a wedge-shaped inclined surface and a groove are provided on the limiting portion, and a protrusion is provided on the end surface of the clamping block facing the small-diameter section, and the protrusion is adapted to the groove.

[0012] In one of the embodiments, a baffle ring is provided on one side of the large diameter section close to the transition section, and the baffle ring is used to block unwanted substances mixed in the airflow.

[0013] In one of the embodiments, the guide plate includes an annular segment, an arc segment and a connecting segment connecting the annular segment and the arc segment; the annular segment abuts against the end surface of the mounting ring facing the annular wall, and there is a gap between the tail of the arc segment and the connecting segment to allow the airflow to enter the filter portion, and the connecting segment is adapted to the air inlet so that all the airflow entering the air inlet enters the spiral guide air duct.

[0014] In one of the embodiments, the separation port and the air inlet are arranged opposite to each other, and the axial spacing between the annular segment and the arc segment is equal to the axial size of the separation port.

[0015] In one of the embodiments, a hinged seat and a snap-fit ​​seat are provided on the side of the outer wall of the dust cup away from the mounting ring, and a hinged head and a snap-fit ​​head are provided on the dust cup cover. The hinged head and the hinged seat can be rotatably assembled, and the snap-fit ​​head is used to adapt to the snap-fit ​​seat to fix the dust cup cover.

[0016] In one embodiment, the dust and gas separation and filtration system also includes an air intake structure connected to the outer wall of the dust cup, the air intake structure has an air intake channel, the air intake channel is connected to the inner cavity through the air inlet, and the air intake structure is used to be connected to an external structure.

[0017] The dust and gas separation and filtration system provided by the embodiment of the utility model divides the inner cavity of the dust cup into an inner cavity and an outer cavity by setting an annular wall in the dust cup; at the same time, a guide plate is set on the filter cover to form a spiral guide air duct with the annular wall and the filter cover body, so that the airflow entering the inner cavity through the air inlet flows along the spiral guide air duct, so that the undesirable substances mixed in the airflow enter the outer cavity through the separation port under the action of centrifugal force for collection. The dust and gas separation and filtration system set up in this way can collect most of the undesirable substances in the outer cavity, and greatly reduce the undesirable substances collected in the inner cavity, reduce the risk of undesirable substances being lifted up again, thereby slowing down the speed at which the filter is blocked, achieving the purpose of extending the interval between filter replacement or cleaning, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0020] Figure 2 It corresponds to Figure 1 Top view of the .

[0021] Figure 3 is along Figure 2 Sectional view after cutting along the center cutting line AA.

[0022] Figure 4 It is an exploded view of an embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of a filter screen cover in one embodiment of the utility model.

[0024] Figure 6 It corresponds to Figure 5 Enlarged view of detail B.

[0025] Figure 7 It is a schematic structural diagram of a dust cup in one embodiment of the utility model.

[0026] Figure 8 It corresponds to Figure 7 Enlarged view of detail C. DETAILED DESCRIPTION

[0027] The scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the embodiments of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0030] See also Figures 1 to 3 The present embodiment relates to a dust-gas separation and filtration system 100, which is mainly used in cleaning appliances that need to generate airflow through a motor to clean objects, such as vacuum cleaners, dust removers, floor scrubbers, etc. The dust-gas separation and filtration system 100 is a mechanism for filtering airflow with undesirable substances (dust, garbage, etc.), so that the undesirable substances remain and clean gas is discharged. It should be noted that in the present embodiment, the undesirable substances are described as dust and garbage.

[0031] In one of the embodiments, the dust and gas separation and filtering system 100 mainly includes: a dust cup 1, a dust cup cover 2, a filter cover 3 and a filter 4.

[0032] Specifically, the dust cup 1 has an air inlet 11 and an axially extending cavity 12, and a mounting ring 13 is protrudingly provided on the inner wall of one side of the dust cup 1. An annular wall 14 is provided in the cavity 12, and one end of the annular wall 14 is connected to one side of the mounting ring 13, and the other end extends along the axial direction of the dust cup 1 to a side away from the mounting ring 13. The annular wall 14 cooperates with the mounting ring to divide the cavity 12 into an inner cavity 121 and an outer cavity 122. The air inlet 11 passes through the outer cavity 122 to communicate with the inner cavity 121, and a separation port 141 connecting the inner cavity 121 and the outer cavity 122 is provided on the annular wall 14.

[0033] The dust cup cover 2 is connected to the side of the dust cup 1 away from the mounting ring 13, and the dust cup cover 2 and the dust cup 1 have an open state and a closed state. When the dust cup cover 2 and the dust cup 1 are in the closed state, the end surface of the dust cup 1 away from the mounting ring 13 and the end surface of the annular wall 14 away from the mounting ring 13 are both in contact with the end surface of the dust cup cover 2, so that the inner cavity 121 and the outer cavity 122 are independent of each other.

[0034] The filter cover 3 is installed in the inner cavity 121, and one end is detachably assembled with the mounting ring 13. The filter cover 3 includes a filter cover body 31 and a guide plate 32 arranged on the outer wall of the filter cover body 31, and the guide plate 32 and the outer wall of the filter cover body 31 and the annular wall 14 are surrounded to form a spiral guide air duct 30, and the separation port 141 is connected to the spiral guide air duct 20. The filter screen 4 is sealed and connected to the mounting ring 13, and the filter screen 4 partially passes through the mounting ring 13 and extends into the filter cover 3, so that the airflow in the filter cover 3 can be discharged from the dust and gas separation filtration system 100 through the filter screen 4. The other end of the filter screen 4 protrudes from the mounting ring 13 and is used to be connected to the air inlet of the external fan. The structure of the filter screen 4 belongs to the prior art and will not be described in detail here.

[0035] It should be noted that when the external fan draws air from the filter cover 3 through the filter 4, the airflow enters the inner cavity 121 from the air inlet 11 and the spiral guide duct 30, and the airflow flowing through the spiral guide duct 30 moves along a spiral trajectory, so that the unwanted substances mixed in the airflow move along the annular wall 14 under the action of centrifugal force, and when the unwanted substances move to the position of the separation port 141, a large amount of unwanted substances continue to enter the outer cavity 122 through the separation port 141 under the action of centrifugal force, and finally settle and collect in the outer cavity 122; a very small part of the unwanted substances enters the inner cavity 121 with the airflow, which can greatly reduce the speed of the unwanted substances accumulating in the inner cavity 121, thereby reducing the risk of the unwanted substances being lifted up again, and finally slowing down the clogging speed of the filter 4, extending the interval between replacement or cleaning of the filter 4, and improving the user experience.

[0036] Please continue reading Figures 1 to 3 In one embodiment, an air intake structure 15 is provided on the outer wall of the dust cup 1, and the air intake structure 15 has an air intake channel 151, and the air intake channel 151 is connected to the inner cavity 121 through the air inlet 11. The air intake structure 15 is used to connect with the external structure, so as to facilitate the connection of the dust and gas separation and filtration system 100 with other structures.

[0037] See also Figures 4 to 6 In one embodiment, the filter cover 3 has an axially penetrating passage 33, and the filter cover body 31 includes a large diameter section 311, a small diameter section 312, and a transition section 313 connecting the large diameter section 311 and the small diameter section 312. The guide plate 32 is arranged on the outer side wall of the large diameter section 311, and the large diameter section 311 has a filter part 3111 on one side close to the small diameter section 312, and the filter part 3111 has a plurality of filter holes, and the airflow enters the passage 33 through the filter holes.

[0038] In one embodiment, a snap-in groove 131 is provided on the end face of the inner wall of the mounting ring 13 away from the dust cup 1, and a snap-in block 3112 is provided on the outer wall of the large diameter section 311 away from the filter portion 3111. The snap-in block 3112 is adapted to the snap-in groove 131, thereby realizing a detachable assembly between the filter cover 3 and the mounting ring 13.

[0039] It should be noted that, in other embodiments, a clamping block 3112 is provided on the end face of the inner wall of the mounting ring 13 away from the dust cup 1, and a clamping groove 131 is provided on the outer wall of the large diameter section 311 away from the filter portion 3111. The clamping block 3112 is adapted to the clamping groove 131, thereby realizing a detachable assembly between the filter cover 3 and the mounting ring 13.

[0040] It should also be noted that, in this embodiment, the clamping groove 131 is provided on the mounting ring 13, and the clamping block 3112 is provided on the large diameter section 311. There are multiple clamping blocks 3112, and there are multiple corresponding clamping grooves 131 and clamping blocks 3112. In this embodiment, there are four clamping blocks 3112, and the four clamping blocks 3112 are respectively adapted to the four clamping grooves 131, so as to fix the filter cover 3 and the mounting ring 13 from four directions.

[0041] See also Figures 4 to 8 In one embodiment, the clamping groove 131 is provided on the mounting ring 13, and a limiting portion 1311 is provided in the clamping groove 131 near the annular wall 14. After the clamping block 3112 is clamped into the clamping groove 131, it needs to be rotated so that the clamping block 3112 and the limiting portion 1311 are buckled and clamped.

[0042] In one embodiment, a groove 1312 is provided on the end surface of the limiting portion 1311 that is pressed against the clamping block 3112, and correspondingly, a protrusion 3113 is provided on the end surface of the clamping block 3112 that faces the small diameter section 312. The protrusion 3113 is used to cooperate with the groove 1312, thereby preventing the clamping block 3112 from sliding out of the clamping groove 131, and can play a role in fixing the filter cover 3.

[0043] It should be noted that the setting of the limiting portion 1311 makes the snap-in groove 131 present a “┓” shape. Therefore, when the snap-in block 3112 is snapped with the snap-in groove 131, the snap-in block 3112 needs to first enter the snap-in groove 131, and then the snap-in groove 131 and the snap-in block 3112 are rotated relative to each other, so that the snap-in block 3112 cooperates with the limiting portion 1311, and at the same time, the protrusion 3113 cooperates with the groove 1312, thereby realizing the detachable assembly between the filter cover 3 and the mounting ring 13.

[0044] In one embodiment, a wedge-shaped surface 1313 is further provided on the limiting portion 1311. The wedge-shaped surface 1313 is provided so that when the clamping groove 131 and the clamping block 3112 rotate relative to each other, the clamping block 3112 and the limiting portion 1311 can be clamped together.

[0045] Please continue reading Figures 4 to 8 In one embodiment, a baffle ring 3114 is provided on the large diameter section 311 near the transition section 313. When a large amount of undesirable substances are accumulated in the inner cavity 121, the spiral guide air duct 30 (see Figure 3 ) The airflow entering will lift up the unwanted substances again, and the baffle ring 3114 blocks most of the unwanted substances that are lifted up again, thereby reducing the unwanted substances in the airflow entering the channel 33 from the inner cavity 121, further reducing the risk of clogging of the filter screen 4, and extending the interval for replacing the filter screen 4.

[0046] In one embodiment, the guide plate 32 includes an annular segment 321, an arc segment 322, and a connecting segment 323 connecting the annular segment and the arc segment. The annular segment 321 abuts against the end surface of the mounting ring 13 facing the annular wall 14, and cooperates with the snap-in groove 131 and the snap-in block 3112 to fix the filter cover 3 and the mounting ring 13. There is a gap between the tail of the arc segment 322 and the connecting segment 323 to allow the airflow to enter the filter part 3111. The connecting segment 323 is adapted to the air inlet 11 so that all the airflow entering the air inlet 11 enters the spiral guide air duct 30 (see Figure 3 )Inside.

[0047] In one embodiment, the separation port 141 is arranged opposite to the air inlet 11, and the axial spacing between the annular segment 321 and the arc segment 322 is substantially equal to the axial dimension of the separation port 141. The separation port 141 arranged in this way can allow the undesirable substances in the spiral guide air duct 30 to enter the outer cavity 122 as much as possible under the action of centrifugal force, thereby reducing the undesirable substances entering the inner cavity 121, which is conducive to reducing the risk of the undesirable substances in the inner cavity 121 being lifted up again.

[0048] It should be noted that, in other embodiments, the size and number of the separation ports 141 can be determined according to demand, and they only need to allow the undesired substances in the spiral air guide duct 30 to enter the outer cavity 122 under the action of centrifugal force.

[0049] In one embodiment, a hinge seat 16 and a snap-fit ​​seat 17 are provided on the side of the outer wall of the dust cup 1 away from the mounting ring 13. A hinge head 21 and a snap-fit ​​head 22 are provided on the dust cup cover 2. The hinge head 21 is rotatably assembled with the hinge seat 16. The snap-fit ​​head 22 is used to fit with the snap-fit ​​seat 17, so as to fix the other end of the dust cup cover 2 on the dust cup 1.

[0050] In one of the embodiments, a sealing ring 5 is provided between the dust cup cover 2 and the dust cup 1, and the sealing ring 5 is used to improve the sealing performance between the dust cup cover 2 and the dust cup 1, so that the external motor has a better effect during suction.

[0051] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A dust and gas separation and filtration system, characterized in that: include: A dust cup having an air inlet and an axially extending cavity, a mounting ring protruding from the inner side wall of one side of the dust cup, an annular wall provided in the cavity, one end of the annular wall connected to one side of the mounting ring, and the other end extending axially away from the mounting ring, the annular wall cooperates with the mounting ring to divide the cavity into an inner cavity and an outer cavity, the air inlet passes through the outer cavity and is connected to the inner cavity, and a separation port connecting the inner cavity and the outer cavity is provided on the annular wall; A dust cup cover is connected to the side of the dust cup away from the mounting ring, and the end surface of the dust cup away from the mounting ring and the end surface of the annular wall away from the mounting ring are both in contact with the dust cup cover, so that the inner cavity and the outer cavity are independent of each other; A filter cover is installed in the inner cavity, and one end of the filter cover is detachably assembled with the mounting ring, the filter cover comprises a filter cover body and a guide plate arranged on the outer side wall of the filter cover body, the guide plate, the outer side wall of the filter cover body and the annular wall are arranged to form a spiral guide air duct, and the separation port is communicated with the spiral guide air duct; And, the filter screen is sealed and connected to the mounting ring, one end of the filter screen extends into the filter screen cover, and the other end is connected to the air inlet of the external fan.

2. The dust and gas separation and filtration system according to claim 1, characterized in that: The filter cover has a channel with an axis passing through it, and the filter cover body includes a large diameter section, a small diameter section and a transition section connecting the large diameter section and the small diameter section, the guide plate is arranged on the outer side wall of the large diameter section, and a filter part is provided on the side of the large diameter section close to the small diameter section, and the filter part has a plurality of filter holes, and the airflow enters the channel through the filter holes.

3. The dust and gas separation and filtration system according to claim 2, characterized in that: A clamping groove is provided on the end surface of the mounting ring away from the inner wall of the dust cup, and a clamping block is provided on the outer wall of the large diameter section away from the filter hole, and the clamping block is adapted to the clamping groove; or, A clamping block is arranged on the end surface of the mounting ring away from the inner wall of the dust cup, and a clamping groove is arranged on the outer wall of the large diameter section away from the filter hole, and the clamping block is adapted to the clamping groove.

4. The dust and gas separation and filtration system according to claim 3, characterized in that: A limiting portion is arranged in the clamping groove on one side close to the annular wall, and the limiting portion is used to match with the clamping block to fix the filter cover.

5. The dust and gas separation and filtration system according to claim 4, characterized in that: The limiting portion is provided with a wedge-shaped inclined surface and a groove, and the end surface of the clamping block facing the small-diameter section is provided with a protrusion, and the protrusion is adapted to the groove.

6. The dust and gas separation and filtration system according to claim 2, characterized in that: A baffle ring is provided on one side of the large diameter section close to the transition section, and the baffle ring is used to block unwanted substances mixed in the airflow.

7. The dust and gas separation and filtration system according to claim 2, characterized in that: The guide plate includes an annular segment, an arc segment and a connecting segment connecting the annular segment and the arc segment; the annular segment abuts against the end surface of the mounting ring facing the annular wall, and a gap is provided between the tail of the arc segment and the connecting segment so that airflow enters the filter portion, and the connecting segment is adapted to the air inlet so that all the airflow entering the air inlet enters the spiral guide air duct.

8. The dust and gas separation and filtration system according to claim 7, characterized in that: The separation port is arranged opposite to the air inlet, and the axial distance between the annular segment and the arc segment is equal to the axial size of the separation port.

9. The dust and gas separation and filtration system according to claim 1, characterized in that: A hinged seat and a snap-fit ​​seat are provided on the side of the outer wall of the dust cup away from the mounting ring, and a hinged head and a snap-fit ​​head are provided on the dust cup cover. The hinged head and the hinged seat can be rotatably assembled, and the snap-fit ​​head is used to adapt to the snap-fit ​​seat to fix the dust cup cover.

10. The dust and gas separation and filtration system according to claim 1, characterized in that: It also includes an air intake structure connected to the outer wall of the dust cup, the air intake structure has an air intake channel, the air intake channel is connected to the inner cavity through the air inlet, and the air intake structure is used to be connected to an external structure.

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