Filter and dust collection equipment provided with same

Abstract

The filter comprises a cylindrical filter body, an upper end cover and a lower end cover, the upper end cover and the lower end cover are arranged on the upper side and the lower side of the filter body respectively, the upper end cover comprises an upper annular groove, a groove opening of the upper annular groove is arranged downwards, the lower end cover comprises a lower annular groove, a groove opening of the lower annular groove is arranged upwards, and the filter body is arranged in the lower annular groove. Two ends of the filter body are respectively inserted into the upper annular groove and the lower annular groove; the air-passing device further comprises a barrel-shaped air-passing framework. The filter body is arranged on the outer side of the air passing framework, and the inner side wall of the space in the filter body cylinder is close to the outer side wall surface of the barrel side part of the air passing framework; the area surrounded by the upper annular groove of the upper end cover is the central area of the upper end cover, the top of the barrel is located below the central area of the upper end cover, a concave-convex positioning mechanism is arranged between the top of the barrel and the central area of the upper end cover, and radial positioning is achieved between the air passing framework and the upper end cover through the concave-convex positioning mechanism. The dust collection device further comprises a filter and an air draft unit, and the air draft unit is used for sucking outside air into the dust collection device and conveying the outside air to the filter.

Description

TECHNICAL FIELD

[0001] The present application relates to a filter and a dust collecting apparatus provided with the filter. BACKGROUND

[0002] The filter is mainly used to intercept solid particles, hair and other impurities in the air by using filter material, and allow the air to continue to flow, so as to purify the air. In the fields of industrial production, environmental protection, daily life and the like, the filter plays a vital role. The filter material is various, and the commonly used ones are filter cotton and filter screen which are weak in rigidity. Therefore, a support framework is often used to support the filter material. For example, the filter core disclosed in the existing patent 02224716.5 has an inner framework, and an upper joint and a lower cover are arranged at two ends of the inner framework. The inner framework is externally provided with filter material, and the surface of the filter material is provided with an outer protective screen. The outer surface of the outer protective screen is provided with an explosion-proof hoop. The explosion-proof hoop is fixedly connected with the outer protective screen as a whole. The explosion-proof hoop holds the filter material, and when air flow is back-flushed, the explosion-proof hoop bears most of the back-flushing force, so as to protect the filter material from being damaged. However, the inner framework, the upper joint and the lower cover are separate components, and the installation is relatively complicated. Moreover, the upper end and the lower end of the inner framework need to be respectively inserted into the grooves of the upper joint and the lower cover. When the support strength of the inner framework needs to be improved and the wall thickness of the inner framework is increased, the outer diameter of the upper joint and the lower cover will be increased, so that the volume of the filter core is increased. SUMMARY

[0003] In view of the deficiencies of the prior art, one of the purposes of the present application is to simplify the installation operation of the filter and effectively reduce the volume of the filter by optimizing the structural design of the filter. In view of this, the present application provides a filter, characterized in that it comprises a filter body in the form of a cylinder and an upper end cover and a lower end cover arranged on the upper and lower sides of the filter body, the upper end cover comprises an upper annular groove, the opening of the upper annular groove is arranged downward, the lower end cover comprises a lower annular groove, the opening of the lower annular groove is arranged upward, and the two ends of the filter body are inserted into the upper annular groove and the lower annular groove respectively; further comprising a wind passing framework in the form of a barrel, the wind passing framework comprises a barrel side and a barrel top, the lower end of the barrel side is connected to the lower end cover and is an integrated molding structure with the lower end cover, a wind passing window is arranged on the barrel side, an air inlet channel is arranged on the lower end cover, and the air inlet channel communicates with the barrel inner space of the wind passing framework; the filter body is arranged on the outer side of the wind passing framework, and the inner side wall of the cylinder inner space of the filter body is close to the outer side wall of the barrel side of the wind passing framework; the area surrounded by the upper annular groove of the upper end cover is the central area of the upper end cover, the barrel top is located below the central area of the upper end cover, and a concave-convex positioning mechanism is arranged between the barrel top and the central area of the upper end cover, which realizes radial positioning between the wind passing framework and the upper end cover by means of the concave-convex positioning mechanism.

[0004] According to the above technical scheme, compared with the prior art, the beneficial technical effects of the present application are: first, since the lower end of the barrel side is connected to the lower end cover and is an integrated molding structure with the lower end cover, the structure of the filter is simplified, it is more compact, and the installation operation of the filter is simplified, which is beneficial to improve the installation efficiency. In addition, the upper end of the barrel side is radially positioned by the barrel top, and the lower end of the barrel side is radially positioned by the lower end cover, so that the degree of radial deformation of the barrel side during the process of bearing radial force can be reduced, and the deformation and damage degree of the filter body can also be reduced, thereby optimizing the support effect on the filter body. Second, since the radial positioning between the wind passing framework and the upper end cover is realized by means of the concave-convex positioning mechanism, the difficulty of radial bias of the wind passing framework and the upper end cover can be improved during the process of bearing radial force of the filter, the wind passing framework, the upper end cover and the lower end cover form a relatively stable support body, and the support effect on the filter body is further optimized.

[0005] Further technical solutions can also be that the concave-convex positioning mechanism comprises a concave pit and a protrusion capable of being inserted into the concave pit, and the concave pit and the protrusion are arranged in the barrel top or the central area of the upper end cover in an alternative manner.

[0006] Further technical solutions can also include a protective cover sleeved outside the filter body, the inner diameter of the protective cover is slightly larger than the outer diameter of the filter body, a cover through hole is arranged on the protective cover, and the protective cover and one of the upper end cover or the lower end cover are in an integral molding structure.

[0007] Further technical solutions can also be that the lower end of the barrel side is connected to the inner side groove wall of the lower annular groove of the lower end cover, and the outer diameter of the barrel side is equivalent to the outer diameter of the inner groove wall of the upper annular groove.

[0008] Further technical solutions can also be that the upper end of the filter body is adhesively fixed in the upper annular groove, and the lower end of the filter body is adhesively fixed in the lower annular groove.

[0009] Further technical solutions can also be that the air inlet channel of the lower end cover is in a horn shape with a small upper end and a large lower end.

[0010] The application also proposes a dust collection device provided with the filter, and the dust collection device comprises the filter and an air suction unit, and the air suction unit is used for sucking external air into the dust collection device and conveying the air to the filter.

[0011] Further technical solutions can also include a mounting cavity with a mounting inlet, a cover body covering the mounting inlet, and an air guide pipe, the filter is detachably mounted in the mounting cavity; one end of the air guide pipe is used for receiving air sucked by the air suction unit, the other end of the air guide pipe abuts against the air inlet channel of the lower end cover, so as to axially position the lower direction of the filter; and the cover body covering the mounting inlet abuts against the upper end cover, so as to axially position the upper direction of the filter.

[0012] Further technical solutions can also be that a radial positioning mechanism for limiting radial movement of the filter is arranged between the cover body and the upper end cover of the filter.

[0013] Due to the above characteristics and advantages, the application can be applied to the filter and the dust collection device provided with the filter. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of a filter according to the application;

[0015] Figure 2 FIG. 2 is a schematic diagram of an exploded structure of the filter;

[0016] Figure 3 FIG. 3 is a schematic diagram of a top view structure of the filter;

[0017] Figure 4 is a sectional view of the filter along the A-A direction in Figure 3 ;

[0018] Figure 5 is a sectional view of the dust collecting apparatus with the filter installed;

[0019] Figure 6 is a perspective view of the cover. DETAILED DESCRIPTION

[0020] The structure of the filter and the dust collecting apparatus with the filter installed according to the technical solutions of the present application will be further described below with reference to the drawings. Except for the explicitly described equivalent or alternative embodiments, the various embodiment details disclosed below can be selectively applied or combined in one embodiment even if there is no direct functional correlation or synergy.

[0021] As shown in Figures 1 to 4 , the filter 100 is characterized in that it comprises a filter body 1 in the shape of a cylinder and an upper end cover 2 and a lower end cover 3 arranged on the upper and lower sides of the filter body 1 respectively, the upper end cover 2 comprises an upper annular groove (not marked in Figure 3 because it is blocked by the upper end of the filter body 1), the opening of the upper annular groove is arranged downward, the lower end cover 3 comprises a lower annular groove 30, the opening of the lower annular groove 30 is arranged upward, the two ends of the filter body 1 are inserted into the upper annular groove and the lower annular groove 30 respectively; further comprising a wind passing framework 31 in the shape of a barrel, the wind passing framework 31 comprises a barrel side part 311 and a barrel top part 312, the lower end of the barrel side part 311 is connected to the lower end cover 3 and is in an integrated molding structure with the lower end cover 3, a wind passing window 3110 is arranged on the barrel side part 311, an air inlet passage 32 is arranged on the lower end cover 3, the air inlet passage 32 communicates with the inner space of the wind passing framework 31; the filter body 1 is arranged on the outer side of the wind passing framework 31 and the inner side wall of the cylinder inner space of the filter body 1 is close to the outer side wall surface of the barrel side part 311 of the wind passing framework 31; the area surrounded by the upper annular groove of the upper end cover 2 is an upper end cover central area 21, the barrel top part 312 is located below the upper end cover central area 21, a concave-convex positioning mechanism is arranged between the barrel top part 312 and the upper end cover central area 21, the concave-convex positioning mechanism is used to realize radial positioning between the wind passing framework 31 and the upper end cover 2.

[0022] Among them, the filter body 1 is a component capable of intercepting solid particles, hair and other impurities carried in the air, but allowing air to pass through. It can be filter cotton, folded filter paper, etc.

[0023] The notch of the upper annular groove is arranged downward, and the notch of the lower annular groove 30 is arranged upward, so that the notch of the upper annular groove and the notch of the lower annular groove 30 are oppositely arranged, the upper end of the filter body 1 is inserted into the upper annular groove, and the lower end is inserted into the lower annular groove 30. Further, the upper end of the filter body 1 is adhesively fixed in the upper annular groove, and the lower end of the filter body 1 is adhesively fixed in the lower annular groove 30. In this way, the filter body 1, the upper end cover 2 and the lower end cover 3 are kept in a connected relationship by means of the above-mentioned adhesive structure.

[0024] The air passing framework 31 is inverted, that is, the barrel opening of the barrel inner space is arranged downward, and the barrel top 312 is located above the barrel opening. The barrel opening is connected to the air inlet channel 32 of the lower end cover 3, and the air inlet channel 32 communicates with the barrel inner space of the air passing framework 31. Of course, in order to make the air inlet channel 32 communicate with the barrel inner space of the air passing framework 31, an annular connecting wall can also be provided on the inner side groove wall of the lower annular groove 30 of the lower end cover 3, the air inlet channel 32 is arranged on the annular connecting wall, and the lower end of the barrel side 311 is connected to the annular connecting wall and surrounds the upper port of the air inlet channel 32. Further, the air inlet channel 32 of the lower end cover 3 is in the shape of a horn with a small upper end and a large lower end.

[0025] The structure form of the barrel side 311 of the air passing framework 31 is various, for example, it can be a side wall arranged in a ring shape, and the window openings formed in the side wall constitute the air passing window 3110. In the present embodiment, the barrel side 311 is composed of a plurality of spaced-apart connecting rods 3111, and the gaps between adjacent connecting rods 3111, the upper end cover 2 and the lower end cover 3 constitute the air passing window 3110.

[0026] The lower end of the barrel side 311 is connected to the lower end cover 3 and is integrally formed with the lower end cover 3, so that the air passing framework 31 and the lower end cover 3 are fixedly connected together. In specific applications, an integral single component including the air passing framework 31 and the lower end cover 3 can be injection molded by an injection molding process. Further, the lower end of the barrel side 311 is connected to the inner side groove wall of the lower annular groove 30 of the lower end cover 3, and the outer diameter of the barrel side 311 is equivalent to the outer diameter of the inner groove wall of the upper annular groove. In specific applications, the barrel side 311 can be selected not to be inserted into the upper annular groove and the lower annular groove 30, thereby facilitating the reduction of the volume of the filter.

[0027] The filter body 1 is arranged outside the air passing framework 31, and in fact the air passing framework 31 also extends into the barrel inner space of the filter body 1.

[0028] The concave-convex positioning mechanism can include a recess provided on the barrel top portion 312 and a protrusion 3121 provided on the upper end cover central area 21, and the protrusion 3121 is inserted into the recess; or the concave-convex positioning mechanism includes a recess provided on the upper end cover central area 21 and a protrusion 3121 provided on the barrel top portion 312, and the protrusion 3121 is inserted into the recess. When the filter 100 bears axial extrusion force, the upper end cover central area 21 of the upper end cover 2 and the barrel top portion 312 are pressed together, and under the support of the barrel side portion 311, the axial compression rate of the installation space formed between the upper annular groove and the lower annular groove 30 for installing the filter body 1 can be reduced, thereby providing good protection for the filter body 1.

[0029] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present application are: first, since the lower end of the barrel side portion 311 is connected to the lower end cover 3 and is an integrated molding structure with the lower end cover 3, the structure of the filter 100 is simplified, making it more compact, and the installation operation of the filter 100 is simplified, which is beneficial to improve the installation efficiency. In addition, the upper end of the barrel side portion 311 is radially positioned by the barrel top portion 312, and the lower end of the barrel side portion 311 is radially positioned by the lower end cover 3, so that the degree of radial deformation of the barrel side portion 311 during bearing radial force can be reduced, and the deformation and damage degree of the filter body 1 can also be reduced, and the support effect on the filter body 1 is optimized. Second, the radial positioning between the air passing framework 31 and the upper end cover 2 is realized by means of the concave-convex positioning mechanism, so that during the process of the filter 100 bearing radial force, the difficulty of radial bias of the air passing framework 31 and the upper end cover 2 is improved, and the air passing framework 31, the upper end cover 2 and the lower end cover 3 form a relatively stable support body, which further optimizes the support effect on the filter body 1.

[0030] Furthermore, it also includes a protective cover 22 that is sleeved on the outside of the filter body 1. The inner diameter of the protective cover 22 is slightly larger than the outer diameter of the filter body 1. A cover through hole 220 is provided on the protective cover 22. The protective cover 22 and one of the upper end cover 2 or the lower end cover 3 are an integrally formed structure. In this way, when the airflow entering the barrel space of the airflow frame 31 passes through the airflow window 3110 and blows toward the filter body 1, the filter body 1 can rely on the protective cover 22 to reduce the degree of outward expansion caused by the impact of the airflow, thereby playing a certain protective role for the filter body 1. Since the protective cover 22 and one of the upper end cover 2 or the lower end cover 3 are an integrally formed structure, this can further simplify the structure and installation operation of the filter 100, which is conducive to improving installation efficiency.

[0031] like Figure 5 and Figure 6 As shown, the present invention also provides a dust collection device, the dust collection device includes the filter 100 and the exhaust unit 4, the exhaust unit 4 is used to suck the outside air onto the filter 100. The dust collection device also includes a mounting cavity ( Figure 5 The filter 100 is obscured by the filter 100 and is not marked in the figure), and the cover body 5 and the air duct 40 that cover the installation entrance are provided. The filter 100 is removably installed in the installation cavity. One end of the air duct 40 is used to receive air sucked in by the exhaust unit, and the other end of the air duct 40 abuts the air inlet channel 32 of the lower end cover 3, thereby axially positioning the filter 100 downward. The cover body 5 that covers the installation entrance abuts the upper end cover 2, thereby axially positioning the filter 100 upward. In this way, the filter 100 can be installed in the installation cavity very conveniently. A radial positioning mechanism is provided between the cover body 5 and the upper end cover 2 of the filter 100 to limit the radial movement of the filter 100. The radial positioning mechanism includes a connecting ear 23 provided on the upper end cover 2, and a plug-in slot 51 provided on the inner side wall of the cover body 5. The connecting ear 23 is inserted into the plug-in slot 51. The exhaust unit 4 can be an exhaust fan. Under the action of the exhaust unit 4, the air is first sucked into the air duct 40, and then passes through the air inlet channel 32, the barrel space of the air frame 31, and the air window 3110 of the barrel side 311 in sequence, and then passes through the filter body 1. The filter body 1 intercepts solid particles, hair and other impurities entrained in the air to purify the air.

Claims

1. A filter, characterized in that The filter comprises a cylindrical filter body and an upper end cover and a lower end cover respectively arranged on the upper and lower sides of the filter body, the upper end cover comprises an upper annular groove, the notch of the upper annular groove is arranged downward, the lower end cover comprises a lower annular groove, the notch of the lower annular groove is arranged upward, and the two ends of the filter body are respectively inserted into the upper annular groove and the lower annular groove; the filter comprises a barrel-shaped airflow frame, the airflow frame comprises a barrel side and a barrel top, the lower end of the barrel side is connected to the lower end cover and is an integrated molding structure with the lower end cover, and an airflow frame is provided on the barrel side. The window is provided with an air inlet channel on the lower end cover, and the air inlet channel is connected to the space inside the barrel of the air passing frame; the filter body is arranged on the outside of the air passing frame and the inner wall of the space inside the filter body is close to the outer wall of the barrel side of the air passing frame; the area surrounded by the upper annular groove of the upper end cover is the central area of ​​the upper end cover, and the top of the barrel is located below the central area of ​​the upper end cover. A concave-convex positioning mechanism is provided between the top of the barrel and the central area of ​​the upper end cover, and the radial positioning between the air passing frame and the upper end cover is achieved by means of the concave-convex positioning mechanism.

2. The filter according to claim 1, characterized in that The concave-convex positioning mechanism includes a pit and a protrusion that can be inserted into the pit, and the pit and the protrusion are selectively arranged on the top of the barrel or the central area of ​​the upper end cover.

3. The filter according to claim 1, characterized in that It also includes a protective cover sleeved on the outside of the filter body, the inner diameter of the protective cover is slightly larger than the outer diameter of the filter body, a cover through hole is provided on the protective cover, and the protective cover and one of the upper end cover or the lower end cover are an integrally formed structure.

4. The filter according to any one of claims 1 to 3, characterized in that The lower end of the barrel side portion is connected to the inner groove wall of the lower annular groove of the lower end cover, and the outer diameter of the barrel side portion is equivalent to the outer diameter of the inner groove wall of the upper annular groove.

5. The filter according to any one of claims 1 to 3, characterized in that The upper end of the filter body is bonded and fixed in the upper annular groove, and the lower end of the filter body is bonded and fixed in the lower annular groove.

6. The filter according to any one of claims 1 to 3, characterized in that The air inlet channel of the lower end cover is in a trumpet shape that is smaller at the top and larger at the bottom.

7. A dust collecting device equipped with the filter according to any one of claims 1 to 6, characterized in that: The dust collection device includes the filter and an exhaust unit, and the exhaust unit is used to suck external air into the dust collection device and transport it to the filter.

8. The dust collection device according to claim 7, characterized in that: It also includes an installation cavity with an installation inlet, a cover body covering the installation inlet and an air duct, and the filter is detachably installed in the installation cavity; one end of the air duct is used to receive the air sucked in by the exhaust unit, and the other end is against the air inlet channel of the lower end cover, thereby axially positioning the filter in the downward direction; the cover body covering the installation inlet is against the upper end cover, thereby axially positioning the filter in the upward direction.

9. The dust collection device according to claim 7 or 8, characterized in that: A radial positioning mechanism for limiting radial movement of the filter is provided between the cover body and the upper end cover of the filter.

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