Dust collection kit and wall sander

Abstract

The present invention discloses a dust collecting assembly and a wall grinding machine, wherein the dust collecting assembly comprises: a dust collecting seat having an installation cavity, the dust collecting seat being provided with a plurality of through holes communicating with the installation cavity, the plurality of through holes being distributed around the periphery of the dust collecting seat; and a plurality of dust collecting pieces, each of which can be movably inserted into each of the through holes. The technical solution of the present invention is in close contact with the wall surface to prevent dust leakage, thereby ensuring a clean working environment.

Description

Technical Field

[0001] The invention relates to the technical field of polishing and dust prevention, and in particular to a dust collecting component and a wall polishing machine using the dust collecting component. Background Art

[0002] Current wall grinders generate a lot of dust when grinding walls. Although wall grinders are generally equipped with dust suction devices to absorb the generated dust, when grinding uneven walls, the dust collecting parts of the dust suction devices of existing wall grinders will still form gaps with the wall, causing dust to leak from the gaps, resulting in the leaked dust polluting the working environment. Summary of the invention

[0003] The main purpose of the present invention is to provide a dust collection component and a wall grinder, which are designed to be in close contact with the wall surface to avoid dust leakage, thereby ensuring a clean working environment.

[0004] To achieve the above object, the present invention provides a dust collecting assembly comprising:

[0005] A dust collecting seat having a mounting cavity, wherein the dust collecting seat is provided with a plurality of through holes communicating with the mounting cavity, and the plurality of through holes are distributed around the periphery of the dust collecting seat;

[0006] A plurality of dust collecting parts, each of which can be movably arranged in each of the through holes.

[0007] Preferably, a cavity wall of the installation cavity perpendicular to the plane where the plurality of through holes are located is a projection wall, and projections of two adjacent dust collecting parts on the projection wall at least partially overlap.

[0008] Preferably, the extension direction of each of the through holes is arranged at an angle to the outer edge of the dust collecting seat.

[0009] Preferably, each dust collecting member comprises:

[0010] An elastic member, one end of which is arranged on the cavity wall of the installation cavity;

[0011] The dust collecting block is movably arranged in one of the through holes, and one end of the dust collecting block extending into the installation cavity is connected with one end of the elastic member facing away from the cavity wall of the installation cavity.

[0012] Preferably, the dust collecting block is provided with the second limiting protrusion located in the installation cavity, the second limiting protrusion is provided with an assembly groove on the side facing the through hole, the inner wall of the installation cavity is provided with a first limiting protrusion around each through hole, and the first limiting protrusion can be slidably accommodated in the assembly groove.

[0013] Preferably, a limiting groove is provided at one end of the dust collecting stopper adjacent to the elastic member, and one end of the elastic member facing away from the cavity wall of the installation cavity is accommodated and limited in the limiting groove.

[0014] Preferably, an elastic layer is provided at one end of the dust collecting block facing away from the elastic member, for abutting against the polished wall surface.

[0015] Preferably, the dust collecting assembly further comprises a dust collecting ring arranged around the periphery of the dust collecting seat, and the dust collecting ring is arranged at intervals from the plurality of perforations.

[0016] Preferably, the dust collecting ring is an elastic dust collecting ring.

[0017] The present invention also proposes a wall sander using the dust collection assembly, comprising the dust collection assembly, shell, centrifugal fan, grinding medium fixing plate, dust bag and drive assembly as described above, the shell is provided with a connecting hole for communicating with the dust bag and a grinding opening for exposing the grinding medium, the drive assembly is arranged in the shell, and the end of the drive assembly away from the grinding opening is transmission connected to the centrifugal fan, the end of the drive assembly close to the grinding opening is transmission connected to the grinding medium fixing plate, the dust collecting seat is arranged on the outer wall of the shell, and is arranged around the edge of the grinding opening.

[0018] The technical solution of the present invention is to provide a plurality of through-holes arranged around the periphery of the dust collecting seat on the dust collecting seat, and to provide a plurality of dust collecting pieces corresponding to the number of the through-holes, and each dust collecting piece can be movably inserted into each of the through-holes; in this way, when the user is grinding an uneven wall surface, a plurality of dust collecting pieces corresponding to the uneven positions can be relatively stretched and deformed, thereby making the dust collecting pieces closely contact the wall surface to form a sealed space, thereby preventing the dust generated by the wall grinder from leaking, thereby ensuring a clean working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a wall grinding machine according to an embodiment of the present invention from one perspective;

[0021] Figure 2 It is a structural schematic diagram of the wall grinding machine of the present invention from another perspective;

[0022] Figure 3 It is a cross-sectional schematic diagram of the wall grinding machine of the present invention;

[0023] Figure 4 for Figure 3 A partial enlarged view of point A.

[0024] Description of Figure Numbers:

[0025] Label name Label name 1 Dust collection seat 11 The first limit protrusion 1a Mounting cavity 22a The second limiting protrusion 1b perforation 22b Mounting slot 2 Dust collection parts 22c Limit groove 21 Elastic parts 3 shell 22 Dust collection block 4 Grinding medium fixing plate 5 Dust bag

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] The present invention proposes a dust collecting component comprising: Figures 1 to 4 , a dust collecting seat 1 and a plurality of dust collecting parts 2, the dust collecting seat 1 having an installation cavity 1a, the dust collecting seat 1 being provided with a plurality of through holes 1b connected to the installation cavity 1a, the plurality of through holes 1b being distributed around the periphery of the dust collecting seat 1; each dust collecting part 2 can be movably penetrated in each of the through holes 1b.

[0031] In this embodiment, the perforation 1b is specifically arranged on the side of the dust collecting seat 1 facing the working wall, and a plurality of perforations 1b are distributed around the periphery of the dust collecting seat 1, that is, a plurality of dust collecting parts 2 movably arranged in the plurality of perforations 1b can enclose and form a sealed closed loop. When the wall grinder is grinding an uneven wall, the dust collecting parts 2 corresponding to the uneven wall can be stretched and deformed accordingly, so that the dust collecting parts 2 and the wall are pressed against each other and always keep in close contact with the wall, so that dust will not leak out during grinding, which plays an isolation role.

[0032] Specifically, the dust collecting seat 1 is a disc structure, and a ring-shaped seat is protrudingly provided, and a ring-shaped installation cavity 1a is provided in the ring-shaped seat, and a plurality of perforations 1b distributed around the periphery of the dust collecting seat 1 are provided on the side of the dust collecting seat 1 facing the wall; the plurality of perforations 1b are enclosed to form a closed loop, that is, the center lines of the plurality of perforations 1b are connected to form a circular ring, thereby reducing the leakage of dust. The dust collecting seat 1 includes a dust collecting chassis and a dust collecting cover, and a ring-shaped plate is protrudingly provided on the dust collecting chassis at a relative interval, and the dust collecting cover is detachably connected to the side of the two ring-shaped plates facing away from the dust collecting chassis, that is, the dust collecting cover and the two ring-shaped plates enclose the installation cavity 1a.

[0033] The technical solution of the present invention is to provide a plurality of through holes 1b arranged around the periphery of the dust collecting seat 1 on the dust collecting seat 1, and to provide a plurality of dust collecting pieces 2 corresponding to the number of the through holes 1b, and each dust collecting piece 2 can be movably penetrated on each of the through holes 1b; in this way, when the user is grinding an uneven wall surface, a plurality of dust collecting pieces 2 corresponding to the uneven positions can be relatively stretched and deformed, thereby making the dust collecting pieces 2 closely contact with the wall surface to form a sealed space, thereby preventing the dust generated by the wall grinder from leaking, thereby ensuring a clean working environment.

[0034] Further, refer to Figures 1 to 4 The cavity wall of the installation cavity 1a which is perpendicular to the plane where the plurality of through holes 1b are located is a projection wall, and the projections of two adjacent dust collecting parts 2 on the projection wall at least partially overlap.

[0035] In this embodiment, the through hole 1b is located on a side of the dust collecting base 1, and the side corresponds to the top wall of the installation cavity 1a, and the through hole 1b is connected to the installation cavity 1a. The projection wall is the cavity wall of the installation cavity 1a that is perpendicular to the cavity wall where the through hole 1b is set, that is, the cavity wall of the installation cavity 1a in the horizontal direction.

[0036] When multiple perforations 1b are projected onto the projection wall, the projections of the perforations 1b at least partially overlap, that is, the two adjacent ends of two adjacent perforations 1b are partially overlapped; in this way, the multiple dust collecting parts 2 are staggered, and the multiple dust collecting parts 2 can be enclosed to form a tighter closed loop.

[0037] When the wall grinder starts grinding and generates dust, multiple dust collecting parts 2 that are enclosed to form a closed loop can form a better sealing effect with the grinded wall; if the grinded wall is an uneven wall, the dust collecting parts 2 that are movably inserted into the through-holes 1b can perform corresponding telescopic movements corresponding to the uneven positions, so that multiple dust collecting parts 2 that are staggered with each other form a better sealing abutment relationship with the grinded wall, and the staggered dust collecting parts 2 are used to fill the gap between the uneven wall position and the dust collecting seat 1, so as to further increase the amount of dust collecting parts 2 that supplement the gap between the dust collecting seat 1 and the grinded wall.

[0038] In one embodiment, multiple through holes 1b are arranged along the periphery of the dust collecting base 1, that is, the shape formed by the center lines of the through holes 1b is consistent with the periphery of the dust collecting base 1, and the center lines of the through holes 1b are arranged parallel to the periphery of the dust collecting base 1.

[0039] Further, refer to Figures 1 to 4 Each of the through holes 1b is arranged at an angle with the outer edge of the dust collecting seat 1.

[0040] In this embodiment, the extension direction of each perforation 1b is set at an angle with the outer edge of the dust collecting seat 1, that is, the perforations 1b are distributed along the periphery of the dust collecting seat 1, and the perforations 1b are set at a certain angle in the clockwise or counterclockwise direction along the periphery of the dust collecting seat 1. In this way, the distance between two adjacent perforations 1b can be further shortened, and the distance between the two adjacent dust collecting parts 2 that are staggered can be further shortened, thereby further increasing the amount of dust collecting parts 2 that supplement the gap between the dust collecting seat 1 and the polished wall.

[0041] Optionally, in another embodiment, two adjacent through holes 1b are arranged at an angle, and two adjacent dust collecting members 2 are also arranged at an angle, that is, the extension directions of the two adjacent dust collecting members 2 are arranged to intersect. In this way, the distance between the two adjacent through holes 1b can be further shortened, and the distance between the two adjacent dust collecting members 2 that are staggered can be further shortened, thereby further increasing the amount of dust collecting members 2 that supplement the gap between the dust collecting seat 1 and the polished wall.

[0042] Preferably, refer to Figure 3 and Figure 4 , each dust collecting member 2 comprises:

[0043] An elastic member 21, one end of which is arranged on the cavity wall of the installation cavity 1a;

[0044] The dust collecting block 22 is movably disposed in one of the through holes 1b, and one end of the dust collecting block 22 extending into the installation cavity 1a is connected to one end of the elastic member 21 facing away from the cavity wall of the installation cavity 1a.

[0045] In this embodiment, the elastic member 21 may be a spring or a compression spring, which is used to provide elastic force for the dust block 22 to be movably inserted into the through hole 1b. It is understandable that the contour of the dust block 22 is consistent with the contour of the through hole 1b, and one end of the dust block 22 is connected to one end of the cavity wall of the elastic member 21 facing away from the installation cavity 1a, and the other end is movably inserted into the through hole 1b. When encountering a polished wall with a raised or recessed position, the dust block 22 corresponding to the position can move inward or outward under the elastic force of the elastic member 21, so that the dust block 22 is tightly abutted against the polished wall, thereby preventing dust generated by polishing from leaking out.

[0046] Further, refer to Figure 3 and Figure 4 The dust collecting block 22 is provided with the second limiting protrusion 22a located in the installation cavity 1a, and the second limiting protrusion 22a is provided with a mounting groove 22b on the side facing the through hole 1b. The inner wall of the installation cavity 1a is provided with a first limiting protrusion 11 around each through hole 1b, and the first limiting protrusion 11 can be slidably accommodated in the mounting groove 22b.

[0047] In this embodiment, the dust collecting block 22 is provided with a second limiting protrusion 22a at one end of the installation cavity 1a, and the second limiting protrusion 22a is extended in the direction of the projection wall, and an assembly groove 22b is recessed on the side of the second limiting protrusion 22a facing the through hole 1b; a cavity wall of the installation cavity 1a is also provided with a first limiting protrusion 11, and the first limiting protrusion 11 is extended toward the cavity wall where the elastic member 21 is provided, and the first limiting protrusion 11 is provided around the hole edge of the through hole 1b, and is an annular protrusion.

[0048] When the dust collecting block 22 moves inward after abutting against the raised wall surface, the groove side wall of the assembly groove 22b of the second limiting protrusion 22a and the first limiting protrusion 11 limit each other, so that the dust collecting block 22 can move along the extension direction of the first limiting protrusion 11, thereby accelerating the movement speed of the dust collecting block 22 and preventing the dust collecting block 22 from being separated from the limit of the hole wall of the perforation 1b, resulting in the dust collecting block 22 not moving along the fixed direction and being unable to closely abut against the polished wall surface.

[0049] Further, refer to Figure 3 and Figure 4 A limiting groove 22c is provided at one end of the dust collecting block 22 adjacent to the elastic member 21, and one end of the elastic member 21 facing away from the cavity wall of the installation cavity 1a is accommodated and limited in the limiting groove 22c.

[0050] In this embodiment, the dust collecting block 22 is provided with one end of the elastic member 21 which is limited to each other by the limiting groove 22c, so that when the elastic member 21 is pressed down by the polished wall, it is not easy for the elastic member 21 to be disconnected from the dust collecting block 22, thereby strengthening the connection tightness between the dust collecting block 22 and the elastic member 21.

[0051] Further, refer to Figure 3 and Figure 4 The dust collecting block 22 has an elastic layer at one end facing away from the elastic member 21, and is used to abut against the polished wall surface.

[0052] In this embodiment, an elastic layer is provided at one end of the dust collecting block 22. When the dust collecting block 22 abuts against the polished wall surface, the elastic layer can produce corresponding deformation under the pressure of the polished wall surface, so that the elastic layer abuts against the polished wall surface more closely, thereby improving the sealing effect of the dust collecting member 2. It is understandable that the elastic layer can be an elastic material such as silicone or rubber.

[0053] Further, refer to Figure 3 and Figure 4 The dust collecting assembly also includes a dust collecting ring arranged on the surface of the dust collecting seat 1 where the through holes 1b are opened. The dust collecting ring is arranged around the periphery of the dust collecting seat 1 and is spaced apart from the plurality of through holes 1b.

[0054] In this embodiment, a dust collecting ring is convexly provided on one side of the dust collecting seat 1 where the perforations 1b are provided, and the shape of the dust collecting ring is consistent with the periphery of the dust collecting seat 1, that is, the dust collecting ring is also provided around the plurality of perforations 1b. In this way, when there is still a small gap between the dust collecting member 2 and the raised polished wall surface, the dust collecting ring can still be closely in contact with the polished wall surface, thereby improving the sealing effect between the entire dust collecting assembly and the polished wall surface, thereby preventing the dust generated by polishing from leaking into the working environment.

[0055] Further, the dust collecting ring is an elastic dust collecting ring. That is, the dust collecting ring can be an elastic dust collecting ring. It is understandable that the dust collecting ring can be made of elastic material or set as a structure with elastic force, for example, the dust collecting ring can be set as a U-shaped component or setting, and the opening of the dust collecting ring is set toward the horizontal cavity wall of the installation cavity 1a. Alternatively, the dust collecting ring is made of silica gel, rubber or densely distributed fluff.

[0056] The present invention also provides a wall grinding machine using the dust collecting assembly, referring to Figures 1 to 4, including the dust collecting assembly as described above, a shell 3, a centrifugal fan, a grinding medium fixing plate 4, a dust collecting bag 5 and a driving assembly, the shell 3 is provided with a connection hole for communicating with the dust collecting bag 5 and a grinding opening for exposing the grinding medium, the driving assembly is arranged in the shell 3, and the end of the driving assembly away from the grinding opening is connected to the centrifugal fan in a transmission manner, the end of the driving assembly close to the grinding opening is connected to the grinding medium fixing plate 4 in a transmission manner, and the dust collecting seat 1 is arranged on the outer wall of the shell 3 and is arranged around the edge of the grinding opening. The specific structure of the dust collecting assembly refers to the above embodiment. Since the wall grinding machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0057] In this embodiment, after the grinding medium is installed on the grinding medium fixing plate 4 and started, the driving component rotates to drive the grinding medium fixing plate 4 to rotate, so that the grinding medium can grind the working wall surface. The driving component also drives the centrifugal fan to rotate, and the dust generated by grinding is sucked into the dust collection bag 5 under the centrifugal force after the centrifugal fan rotates.

[0058] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dust collecting component, It is characterized in that include: A dust collecting seat having a mounting cavity, wherein the dust collecting seat is provided with a plurality of through holes communicating with the mounting cavity, and the plurality of through holes are distributed around the periphery of the dust collecting seat; A plurality of dust collecting parts, each of which can be movably inserted into each of the through holes; a cavity wall of the installation cavity perpendicular to the plane where the through holes are located is a projection wall, and projections of two adjacent dust collecting parts on the projection wall at least partially overlap; The extension direction of each of the through holes is arranged at an angle with the outer edge of the dust collecting seat; Each dust collection unit includes: An elastic member, one end of which is arranged on the cavity wall of the installation cavity; A dust collecting block is movably arranged in one of the through holes, and one end of the dust collecting block extends into the installation cavity and is connected to one end of the elastic member facing away from the cavity wall of the installation cavity; The dust collecting block is provided with a second limiting protrusion located in the installation cavity, and a mounting groove is recessed on a side of the second limiting protrusion facing the through hole. A first limiting protrusion is provided on the inner wall of the installation cavity around each through hole, and the first limiting protrusion can be slidably accommodated in the mounting groove; The dust collecting assembly further comprises a dust collecting ring arranged around the periphery of the dust collecting seat, and the dust collecting ring is arranged at intervals with the plurality of the through holes.

2. The dust collecting assembly according to claim 1, It is characterized in that A limiting groove is provided at one end of the dust collecting stopper adjacent to the elastic member, and one end of the elastic member facing away from the cavity wall of the installation cavity is accommodated and limited in the limiting groove.

3. The dust collecting assembly according to claim 2, It is characterized in that An elastic layer is provided at one end of the dust collecting block facing away from the elastic member, and is used for abutting against the polished wall surface.

4. The dust collecting assembly according to claim 1, It is characterized in that The dust collecting ring is an elastic dust collecting ring.

5. A wall grinding machine, It is characterized in that It comprises a dust collecting component as claimed in any one of claims 1 to 4, a shell, a centrifugal fan, a grinding medium fixing plate, a dust collecting bag and a driving component, the shell is provided with a connecting hole for communicating with the dust collecting bag and a grinding opening for exposing the grinding medium, the driving component is arranged in the shell, and the end of the driving component away from the grinding opening is transmission-connected to the centrifugal fan, the end of the driving component close to the grinding opening is transmission-connected to the grinding medium fixing plate, and the dust collecting seat is arranged on the outer wall of the shell and is arranged around the edge of the grinding opening.

Images