Dust collection device and workstation

Abstract

The utility model provides a low-noise dust collection device and a work station. The dust collection device comprises a dust box, the air suction mechanism comprises a fan cover, a fan and an air guide cylinder, the fan cover is installed on the outer wall of the dust box, the fan is located in the fan cover, an air inlet of the fan is communicated with the interior of the dust box, an air outlet of the fan is communicated with the interior of the fan cover, the fan cover is in a cylinder shape with one end opened and the other end sealed, and the air guide cylinder is located in the air guide cylinder. The air duct is connected with the side part of the fan cover along the tangential direction and is communicated with the interior of the fan cover; the noise reduction mechanism comprises a noise reduction barrel and a noise reduction cover, the noise reduction barrel is communicated with the air guide barrel, a plurality of second air outlet holes are formed in the barrel wall part of the noise reduction barrel, a plurality of first air outlet holes are formed in the barrel bottom of the noise reduction barrel, the noise reduction cover is located on the periphery of the noise reduction barrel, and the first air outlet holes are communicated with the second air outlet holes. A gap is formed between the silencing cover and the silencing barrel, and the silencing cover is installed on the air guide barrel.

Description

Technical Field

[0001] The utility model belongs to the field of cleaning equipment, in particular to a dust collecting device and a workstation. Background Art

[0002] To improve the efficiency of cleaning equipment, the workstation is equipped with a dust collection device. This device relies on a fan to create a pressure difference between the inside and outside of the dust box, forcing the waste from the robot's dust box into the dust bag inside the workstation's dust box. This requires a relatively high power fan, which generates a lot of noise during operation, significantly affecting the owner's life. Summary of the Invention

[0003] In view of the above-mentioned deficiencies or defects in the prior art, the utility model provides a low-noise dust collecting device and a workstation.

[0004] The dust collecting device provided in this embodiment includes a dust box; an air suction mechanism, wherein the air suction mechanism includes a hood, a fan and an air guide tube, the hood is mounted on the outer wall of the dust box, the fan is located in the hood, the air inlet of the fan is connected to the interior of the dust box, and the air outlet of the fan is connected to the interior of the hood, the hood is in the shape of a tube with one end open and the other end sealed, the air guide tube is tangentially connected to the side of the hood and connected to the interior of the hood; and a noise reduction mechanism, wherein the noise reduction mechanism includes a silencer and a silencer cover, the silencer is connected to the air guide tube and has a plurality of first air outlet holes provided on the tube wall of the silencer, and a plurality of second air outlet holes provided on the tube bottom of the silencer, the silencer cover is located at the outer periphery of the silencer, and there is a distance between the silencer cover and the silencer, and the silencer cover is mounted on the air guide tube.

[0005] Optionally, a front rubber pad is provided between the dust box and the end face of the fan head, the outer wall of the dust box is provided with an inner cylinder connected to the interior of the dust box, and the front rubber pad is provided with a sealing groove for the end of the inner cylinder to be embedded.

[0006] Optionally, the front rubber pad wraps the end face and side face of the fan head, and the side wall of the wind cover is radially recessed outward to form a second limiting shell. The front rubber pad is provided with a second limiting block embedded in the second limiting shell, and the bottom of the second limiting shell is provided with a wiring hole for the line to pass through, and the bottom of the second limiting shell is also provided with a through groove connected to the wiring hole.

[0007] Optionally, an outer cylinder is provided on the outer wall of the dust box, the outer cylinder is located on the outer periphery of the inner cylinder, the end of the outer cylinder abuts the front rubber pad, the outer wall of the outer cylinder is provided with a rib extending axially, and the wind cover is sleeved on the rib.

[0008] Optionally, a rear rubber pad is provided between the end face of the tail of the fan and the wind cover, the bottom wall of the wind cover is provided with a first circumferential limit hole, the rear rubber pad is provided with a first circumferential limit block extending into the first circumferential limit hole, the first circumferential limit hole is frustum-shaped, and the shape of the first circumferential limit hole is adapted to the first circumferential limit block, the bottom wall of the tail of the fan is provided with a second circumferential limit hole, the rear rubber pad is provided with a second circumferential limit block extending into the second circumferential limit hole; a positioning groove is provided on the middle side of the rear rubber pad close to the fan, and a positioning column extending into the positioning groove is provided at the tail of the fan.

[0009] Optionally, the fan is stepped, comprising a fan head with a large outer diameter and a fan tail with a small outer diameter, a sponge is provided between the side wall of the fan tail and the wind cover, the fan air outlet is provided on the side wall of the fan tail, the air guide tube is provided close to the fan air outlet, and an air outlet channel connecting the fan outlet and the air guide tube is provided in the sponge.

[0010] Optionally, the silencer includes an open portion, a guide portion, a cylinder wall portion and a cylinder bottom portion, the guide portion is in a cone shape, the guide portion connects the open portion and the upper end of the cylinder wall portion, the cylinder bottom portion covers the lower end of the cylinder wall portion, the guide portion is provided with a first diversion hole, the second air outlet hole is provided on the cylinder wall portion, and the first air outlet hole is provided at the cylinder bottom portion.

[0011] Optionally, the silencer hood includes an opening portion, a hood body portion, a contraction portion and an air outlet portion, the contraction portion is in a cone shape, the opening portion is connected to the upper end of the hood body portion, the contraction portion is connected to the lower end of the hood body portion and the upper end of the air outlet portion, the hood body portion and the air outlet portion are cylindrical, and a plurality of second diversion holes are provided on the second contraction portion.

[0012] Optionally, the air outlet portion of the silencer cover is provided with an exhaust pipe, the exhaust pipe is a hose, and the exhaust pipe is corrugated.

[0013] The workstation provided in this embodiment includes a frame, a docking cavity is provided at the lower part of the frame; the above-mentioned dust collecting device; and a dust collecting duct, the dust collecting duct connects the dust outlet and the dust inlet, the dust outlet is arranged on the dust box, and the dust inlet is arranged on the cavity wall of the docking cavity.

[0014] The dust collection device provided by the present invention provides an air guide duct tangentially connected to the side of the wind hood, allowing air to be discharged smoothly from the wind hood. Compared to a method in which air is discharged axially from the wind hood, this method avoids noise caused by turbulence. In addition, after the air enters the silencer from the air guide duct, most of it flows toward the bottom of the silencer, and a small part flows toward the wall of the silencer. The air flows out of the silencer through the second air outlet provided at the bottom of the silencer, avoiding the air directly hitting the bottom of the silencer and reflecting to form turbulence. After the air flows out of the silencer through the first air outlet, it is reflected and scattered in the space between the silencer hood and the silencer, further slowing the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is the overall diagram of the dust collection device;

[0017] Figure 2 It is a longitudinal cross-sectional view of the dust collecting device at the hood;

[0018] Figure 3 for Figure 2 Magnified view of the circle shown;

[0019] Figure 4 It is a longitudinal cross-sectional view of the noise reduction mechanism of the dust collecting device;

[0020] Figure 5 for Figure 4 Magnified view of the circle shown;

[0021] Figure 6 This is the overall front view of the wind shield;

[0022] Figure 7 This is the overall rear view of the windshield;

[0023] Figure 8 This is the overall picture of the silencer cover;

[0024] Figure 9 This is the overall picture of the silencer;

[0025] Figure 10 This is the overall diagram of the fan;

[0026] Figure 11 This is the overall picture of the front rubber pad;

[0027] Figure 12 This is the overall rear view of the front rubber pad;

[0028] Figure 13 This is the overall front view of the front rubber pad. DETAILED DESCRIPTION

[0029] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used to describe the relative positions of components in the directions shown in the drawings or in the vertical, perpendicular or gravity directions.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figures 1 to 13 As shown, the dust collecting device provided in this embodiment includes a dust box 1; an air suction mechanism, which includes a hood 21, a fan 6 and an air guide tube 22. The hood 21 is mounted on the outer wall of the dust box 1, and the fan 6 is located inside the hood 21. The air inlet of the fan 6 is connected to the interior of the dust box 1, and the air outlet of the fan 22 is connected to the interior of the hood 21. The hood 21 is in the shape of a tube with one end open and the other end closed. The air guide tube 22 is tangentially connected to the side of the hood 21 and is connected to the interior of the hood 21.

[0034] The noise reduction mechanism includes a silencer 4 and a silencer cover 3. The silencer 4 is connected to the air duct 22. A plurality of first air outlet holes 41 are provided on the wall of the silencer 4. A plurality of second air outlet holes 42 are provided on the bottom of the silencer 4. The silencer cover 4 is located on the outer periphery of the silencer 4. There is a distance between the silencer cover 3 and the silencer 4. The silencer cover 3 is installed on the air duct 22.

[0035] The dust collecting device provided in this embodiment allows air to be discharged smoothly from the wind hood by providing an air guide duct tangentially connected to the side of the wind hood. Compared with the method of discharging air from the wind hood along the axial direction, this method avoids the noise generated by air turbulence. In addition, after the air enters the silencer from the air guide duct, most of it flows toward the bottom of the silencer, and a small part flows toward the wall of the silencer. The air flows out of the silencer through the second air outlet provided at the bottom of the silencer, avoiding the air directly hitting the bottom of the silencer and forming turbulence after reflection. After the air flows out of the silencer through the first air outlet, it is reflected and scattered in the space between the silencer hood and the silencer, further slowing down the flow rate.

[0036] The fan may be an axial flow fan, for example. The fan housing is cylindrical, the air guide is tangent to the circumference of the fan housing, and the axial direction of the air guide may be vertical, front-back, or oblique, depending on the spatial arrangement within the workstation.

[0037] A front rubber pad 72 is provided between the dust box 1 and the end face of the fan head 61 . The outer wall of the dust box 1 is provided with an inner cylinder 11 communicating with the interior of the dust box. The front rubber pad 72 is provided with a sealing groove 721 for the end of the inner cylinder 11 to be embedded.

[0038] By providing a front rubber pad between the dust box and the end face of the fan head, the noise generated by the fan vibration can be reduced. In this embodiment, by further providing a sealing groove on the front rubber pad, the fan is tightly connected to the dust box through the inner cylinder, and no air leakage occurs during the operation of the fan.

[0039] The front rubber pad 72 wraps the end face and side face of the fan head 61, and the side wall of the fan cover 21 is radially recessed outward to form a second limiting shell 212. The front rubber pad 72 is provided with a second limiting block 722 embedded in the second limiting shell 212. The bottom of the second limiting shell 212 is provided with a wiring hole for the line to pass through. The bottom of the second limiting shell 212 is also provided with a through groove 213 connected to the wiring hole. Figure 6 As shown, the wiring hole and the through slot have been connected into one.

[0040] The sealing groove is provided at the portion where the front rubber pad wraps around the end face of the fan head, and the second limiting block is provided at the portion where the front rubber pad wraps around the side face of the fan head. This embodiment can prevent the front rubber pad from rotating circumferentially relative to the wind shield by providing the second limiting shell and the second limiting block. The second limiting shell extends along the axial direction of the wind shield to the space at the tail of the fan, and the fan circuit is led out from the tail of the fan. By providing a wiring hole at the bottom of the second limiting hole, the fan circuit can be easily passed through. Figure 10 As shown, the side wall of the fan tail 62 is provided with a terminal 623, and one end of the line is connected to the terminal 623. Figure 11 As shown, the second limiting block 722 of the front rubber pad 72 is provided with a wiring groove 724 and a wiring hole 723. The wiring passes through the wiring groove 724 and wiring hole 723 on the second limiting block 722 and finally passes through the wiring hole at the bottom of the second limiting shell 212. This embodiment further provides a through slot to facilitate demolding of the air hood.

[0041] The outer wall of the dust box 1 is provided with an outer cylinder 12, which is located on the outer periphery of the inner cylinder 11. The end of the outer cylinder 12 abuts the front rubber pad 72. The outer wall of the outer cylinder 12 is provided with a rib plate 121 extending along the axial direction, and the wind cover 21 is sleeved on the rib plate 121.

[0042] A first screw column is provided on the outer wall of the dust box, and a first support 211 is provided at the end of the open end of the air cover 21. A first positioning hole is provided in the first support for the first screw column to extend into. The fastener passes through the first support and is connected to the first screw column to fix the air cover 21 on the dust box 1.

[0043] If the outer circumferential wall of the outer cylinder were in direct surface contact with the inner wall of the hood, it would be difficult to machine a smooth surface due to the large contact area. This embodiment, by providing ribs on the outer circumferential wall of the outer cylinder, creates linear contact between the outer cylinder and the hood. This not only improves the positioning accuracy between the hood and outer cylinder, but also reduces the difficulty of machining the outer cylinder and hood. Furthermore, by also abutting the end of the outer cylinder against the front rubber pad, this embodiment ensures that the fan is in contact with both the outer cylinder and the inner cylinder, making it less likely to tip over during installation.

[0044] A rear rubber pad 71 is provided between the end face of the fan tail 62 and the wind cover 21, and a first circumferential limit hole 213 is provided on the bottom wall of the wind cover 21. A first circumferential limit block 713 extending into the first circumferential limit hole 213 is provided on the rear rubber pad 71. The first circumferential limit hole 213 is in the shape of a cone, and the shape of the first circumferential limit hole 213 is adapted to the first circumferential limit block 713. A second circumferential limit hole 621 is provided on the bottom wall of the tail of the fan 6, and a second circumferential limit block 711 extending into the second circumferential limit hole 621 is provided; a positioning groove 712 is provided on the side of the middle part of the rear rubber pad 71 close to the fan 6, and a positioning column 622 extending into the positioning groove 712 is provided at the tail of the fan 6.

[0045] The first circumferential limiting hole 213 has a square cross-section, while the second circumferential limiting hole 621 has an arc-shaped cross-section. The first circumferential limiting hole and the first circumferential limiting block cooperate to prevent the rear rubber pad from circumferentially rotating relative to the fan housing. The second circumferential limiting hole and the second circumferential limiting block cooperate to prevent the rear rubber pad from circumferentially rotating relative to the fan. The first circumferential limiting hole and the first circumferential limiting block are frustoconical in shape, preventing axial movement of the rear rubber pad.

[0046] The fan 6 is stepped and includes a fan head 61 with a large outer diameter and a fan tail 62 with a small outer diameter. A sponge 8 is provided between the side wall of the fan tail and the wind cover. The fan outlet is provided on the side wall of the fan tail 62. The air guide tube 22 is provided close to the air outlet of the fan 6. An air outlet channel connecting the air outlet of the fan 6 and the air guide tube 22 is provided in the sponge 8.

[0047] By setting the sponge, the flow rate of the air that is not discharged through the air guide tube can be slowed down, and the noise generated by this part of the air during the flow process can be reduced.

[0048] The silencer 4 includes an open portion 44, a guide portion 45, a cylinder wall portion 46 and a cylinder bottom portion 47. The guide portion 45 is in a cone shape, connecting the open portion 44 and the upper end of the cylinder wall portion 46. The cylinder bottom portion 47 covers the lower end of the cylinder wall portion 46. A first diversion hole 43 is provided on the guide portion 45, a first air outlet hole 41 is provided on the cylinder wall portion 46, and a second air outlet hole 42 is provided on the cylinder bottom portion 47.

[0049] In this embodiment, a guide portion is provided on the silencer, and a first diversion hole is provided on the guide portion, so that the air flows out of the silencer through the second air outlet hole on the wall of the silencer and the first diversion hole on the guide portion, thereby reducing the amount of air flowing out through the first air outlet hole at the bottom of the tube, avoiding a large amount of air hitting the bottom of the tube and reflecting to generate turbulence, thereby generating noise.

[0050] The silencer 3 includes an opening portion 33, a cover body portion 34, a contraction portion 35 and an air outlet portion 36. The contraction portion 35 is in a cone shape. The opening portion 33 is connected to the upper end of the cover body portion 34. The contraction portion 35 is connected to the lower end of the cover body portion 34 and the upper end of the air outlet portion 36. The cover body portion 34 and the air outlet portion 36 are cylindrical, and a plurality of second diversion holes are provided on the contraction portion 36.

[0051] A second support 32 is provided on the periphery of the opening portion 33, and a second screw column 221 is provided on the periphery of the air outlet end of the air duct 22. The second support 32 is provided with a second positioning hole for the second screw column 221 to extend into, and a fastener passes through the second support 32 and is connected to the second screw column 221 to install the silencer 3 on the air duct 22.

[0052] In this embodiment, a second diversion hole is provided on the second contraction portion, so that part of the sound waves entering the silencer cover are discharged through the second diversion hole instead of being discharged all through the air outlet portion, thereby diverting the sound waves once and further reducing noise.

[0053] The air outlet of the muffler cover 3 is provided with an exhaust pipe 92, which is a flexible hose with a corrugated shape. In this embodiment, by configuring the exhaust pipe as a flexible hose and configuring the hose as a corrugated shape, i.e., the inner wall of the exhaust pipe has multiple concave and convex folds, the speed of sound waves can be further slowed down, the energy of sound waves can be weakened, and thus noise can be reduced.

[0054] The workstation provided in this embodiment includes a frame, a docking cavity is provided at the lower part of the frame; the above-mentioned dust collecting device; and a dust collecting duct, the dust collecting duct 91 connects the dust outlet and the dust inlet, the dust outlet is provided on the dust box 1, and the dust inlet is provided on the cavity wall of the docking cavity.

[0055] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0057] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A dust collecting device, characterized in that: include: dust box; an air suction mechanism, the air suction mechanism comprising an air hood, a fan, and an air guide tube, the air hood being mounted on the outer wall of the dust box, the fan being located within the air hood, the air inlet of the fan being in communication with the interior of the dust box, the air outlet of the fan being in communication with the interior of the air hood, the air hood being in the shape of a cylinder with one end open and the other end closed, the air guide tube being tangentially connected to the side of the air hood and in communication with the interior of the air hood; and The noise reduction mechanism includes a silencer and a silencer cover, the silencer is connected to the air duct, a plurality of first air outlet holes are provided on the wall of the silencer, a plurality of second air outlet holes are provided on the bottom of the silencer, the silencer cover is located on the outer periphery of the silencer, there is a distance between the silencer cover and the silencer, and the silencer cover is installed on the air duct.

2. The dust collecting device according to claim 1, characterized in that A front rubber pad is provided between the dust box and the end face of the fan head, an inner cylinder communicating with the interior of the dust box is provided on the outer wall of the dust box, and a sealing groove for embedding the end of the inner cylinder is provided on the front rubber pad.

3. The dust collecting device according to claim 2, characterized in that The front rubber pad wraps the end face and side face of the fan head, and the side wall of the wind cover is radially recessed outward to form a second limiting shell. The front rubber pad is provided with a second limiting block embedded in the second limiting shell, and the bottom of the second limiting shell is provided with a wiring hole for the line to pass through, and the bottom of the second limiting shell is also provided with a through groove connected to the wiring hole.

4. The dust collecting device according to claim 2, characterized in that An outer cylinder is provided on the outer wall of the dust box. The outer cylinder is located on the outer periphery of the inner cylinder. The end of the outer cylinder abuts against the front rubber pad. The outer wall of the outer cylinder is provided with a rib plate extending in the axial direction. The wind cover is sleeved on the rib plate.

5. The dust collecting device according to any one of claims 1 to 4, characterized in that: A rear rubber pad is provided between the end face of the tail of the fan and the wind cover, the bottom wall of the wind cover is provided with a first circumferential limit hole, the rear rubber pad is provided with a first circumferential limit block extending into the first circumferential limit hole, the first circumferential limit hole is frustum-shaped, and the shape of the first circumferential limit hole is adapted to the first circumferential limit block, the bottom wall of the tail of the fan is provided with a second circumferential limit hole, the rear rubber pad is provided with a second circumferential limit block extending into the second circumferential limit hole; a positioning groove is provided on the middle side of the rear rubber pad close to the fan, and a positioning column extending into the positioning groove is provided at the tail of the fan.

6. The dust collecting device according to any one of claims 1 to 4, characterized in that: The fan is stepped, comprising a fan head with a large outer diameter and a fan tail with a small outer diameter, a sponge is provided between the side wall of the fan tail and the wind cover, the fan air outlet is provided on the side wall of the fan tail, the air guide tube is provided close to the fan air outlet, and an air outlet channel connecting the fan outlet and the air guide tube is provided in the sponge.

7. The dust collecting device according to any one of claims 1 to 4, characterized in that: The silencer includes an open portion, a guide portion, a cylinder wall portion and a cylinder bottom portion. The guide portion is in a cone shape. The guide portion connects the open portion and the upper end of the cylinder wall portion. The cylinder bottom portion covers the lower end of the cylinder wall portion. The guide portion is provided with a first diversion hole, the second air outlet hole is provided on the cylinder wall portion, and the first air outlet hole is provided at the cylinder bottom portion.

8. The dust collecting device according to any one of claims 1 to 4, characterized in that: The silencer hood includes an opening portion, a hood body portion, a contraction portion and an air outlet portion, the contraction portion is in a frustum shape, the opening portion is connected to the upper end of the hood body portion, the contraction portion is connected to the lower end of the hood body portion and the upper end of the air outlet portion, the hood body portion and the air outlet portion are cylindrical, and a plurality of second diversion holes are provided on the second contraction portion.

9. The dust collecting device according to any one of claims 1 to 4, characterized in that: The air outlet portion of the muffler cover is provided with an exhaust pipe, the exhaust pipe is a hose, and the exhaust pipe is corrugated.

10. A workstation, characterized in that: include: A frame, wherein a docking cavity is provided at the lower portion of the frame; The dust collecting device according to any one of claims 1 to 9; as well as A dust collecting duct is provided, wherein the dust collecting duct is connected to a dust outlet and a dust inlet, the dust outlet is provided on the dust box, and the dust inlet is provided on the cavity wall of the docking cavity.

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