Anode workshop pouring area dust collection device

Abstract

The utility model relates to the technical field of workshop dust removal, and provides an anode workshop pouring area dust collection device which comprises a first pipeline, an air inducing assembly, a dust collection assembly and a plurality of second pipelines, and the air inducing assembly is communicated with the first pipeline and used for generating negative pressure in the first pipeline; the second pipeline is communicated with the first pipeline; the dust collection assembly comprises a plurality of dust collection units in one-to-one correspondence with the second pipelines, each dust collection unit comprises at least one telescopic pipe, the telescopic pipes are vertically arranged, and the tops of the telescopic pipes communicate with the corresponding second pipelines. By arranging the air inducing assembly, negative pressure is formed in the first pipeline, and then dust-containing air enters the telescopic pipe; by changing the length of the telescopic pipe, dust removal can be carried out on areas with different heights, interference with a driving worker or other parts in a workshop can be avoided, the adaptability is better, the telescopic pipe is easy to store and does not occupy the ground space, and the problems that the dust removal range of the dust removal device is limited, and the advancing route of the driving worker is interfered are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of workshop dust removal, in particular to a dust collecting device for a casting area of ​​an anode workshop. Background Art

[0002] When the phosphorus pig iron pouring operation is carried out in the anode workshop, a large amount of smoke and dust will be generated, which will not only interfere with the workers' vision, but also cause serious harm to their bodies.

[0003] At present, the conventional dust removal method in anode workshops is to install dust removal devices such as vacuum cleaners in the workshop to suck away the smoke and dust. However, this method can only vacuum certain areas close to the ground, and the dust removal area is limited. If multiple dust removal devices are installed, a lot of space will be occupied, restricting the route of the operator. Utility Model Content

[0004] The embodiment of the utility model provides a dust collecting device for the casting area of ​​an anode workshop, which can solve the problem that the dust removal range of the dust removal device is limited and interferes with the travel route of the crane operator.

[0005] An embodiment of the utility model provides a dust collecting device for a casting area of ​​an anode workshop, comprising: a first pipe, an air induced draft component, a dust suction component and a plurality of second pipes, wherein the air induced draft component is connected to the first pipe and is used to create a negative pressure inside the first pipe; one end of the plurality of second pipes is connected to the first pipe; the dust suction component comprises a plurality of dust suction units corresponding one-to-one to the plurality of second pipes, the dust suction unit comprises at least one telescopic tube, the telescopic tube is vertically arranged, and the top of the telescopic tube is connected to the corresponding second pipe.

[0006] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collection unit includes a plurality of the telescopic tubes; the dust collecting device for the casting area of ​​the anode workshop also includes a plurality of connecting pieces corresponding one by one to the plurality of the dust collection units, and the connecting pieces are connected to the bottoms of the plurality of telescopic tubes corresponding to the dust collection units.

[0007] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the interior of the connecting piece has a plurality of cavities corresponding one-to-one to the plurality of telescopic tubes corresponding to the dust suction unit, the connecting piece is provided with a plurality of dust suction ports connected to the cavities, and any of the cavities has a plurality of dust suction ports in different directions connected to it, and the cavity is connected to the corresponding telescopic tube through one of the dust suction ports.

[0008] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting device for the casting area of ​​the anode workshop further comprises a lifting assembly, the lifting assembly is connected to the dust suction unit, and drives the telescopic tube to extend and retract.

[0009] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting device for the casting area of ​​the anode workshop also includes a plurality of connecting parts corresponding one-to-one to the plurality of dust suction units, and the connecting parts are connected to the bottom of the telescopic tube of the corresponding dust suction unit; the lifting assembly includes a plurality of lifting units corresponding one-to-one to the plurality of dust suction units, and the lifting unit is connected to the connecting parts and drives the connecting parts to rise and fall.

[0010] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting device for the casting area of ​​the anode workshop also includes a plurality of valves corresponding one-to-one to a plurality of the second pipes, and the valve is arranged at one end of the corresponding second pipe connected to the first pipe.

[0011] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting device for the casting area of ​​the anode workshop also includes a dust collecting component, and the dust collecting component includes a dust collecting box and a filter element, the filter element is arranged in the dust collecting box, and divides the dust collecting box into an upper chamber and a lower chamber, the upper chamber is connected to the air induced assembly, and the lower chamber is connected to the first pipe.

[0012] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting assembly also includes a cleaning unit, the cleaning unit includes a cleaning piece and a driving mechanism, the cleaning piece is located in the lower chamber, the driving mechanism is connected to the cleaning piece and drives the cleaning piece to move so that the cleaning piece contacts the bottom surface of the filter element and moves relative to it.

[0013] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the driving mechanism is used to drive the cleaning element to rotate; the filter element is an arc-shaped structure with a convex middle portion, and the cleaning element can contact any area of ​​the bottom surface of the filter element during rotation.

[0014] According to the dust collecting device for the casting area of ​​the anode workshop provided by the utility model, the dust collecting assembly also includes a dust collecting box and a guide member, the dust collecting box is arranged on the inner bottom surface of the lower chamber, the upper end of the dust collecting box is open, the guide member is arranged above the dust collecting box, and the guide member is used to guide dust into the dust collecting box.

[0015] The dust collecting device for the casting area of ​​the anode workshop of the utility model provides an air induced draft component to make the interior of the first pipe negatively pressured, so that the dust-containing air in the anode workshop enters the telescopic tube from the bottom of the telescopic tube, thereby completing the dust collection work; when the dust collection work is performed, the length of the telescopic tube can be changed, so that dust can be removed from areas at different heights in the workshop, and the cleaning range is wider. Furthermore, the telescopic tube can avoid interference with the operator or other components in the workshop by changing the length, so that the dust collection work can be performed for various workshop working conditions, and the adaptability is better; when the dust collection work is not performed, the telescopic tube can be directly retracted, so that the bottom of the telescopic tube is away from the ground, which is not only easy to store, but also does not occupy ground space, and effectively solves the problems of limited dust collection range of the dust removal device and interference with the travel route of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of the dust collecting device in the casting area of ​​the anode workshop provided by the utility model;

[0018] Figure 2 A partial top view of the dust collecting device in the casting area of ​​the anode workshop provided by the utility model;

[0019] Figure 3 A partial side view of the dust collecting device in the casting area of ​​the anode workshop provided by the utility model.

[0020] Reference numerals:

[0021] 1. The first pipeline;

[0022] 2. induced draft assembly; 21. air pump; 22. air extraction pipeline;

[0023] 3. Dust collection assembly; 31. Telescopic tube;

[0024] 4. Second pipeline;

[0025] 5. Connector; 51. Cavity; 52. Dust suction port;

[0026] 6. Dust hood;

[0027] 7. Lifting components;

[0028] 8. Valve;

[0029] 9. Dust collection assembly; 91. Dust collection box; 92. Filter element; 93. Cleaning element; 94. Driving mechanism; 941. Motor; 95. Dust collection box; 96. Guide element. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Combine the following Figures 1 to 3 The utility model describes a dust collecting device for the casting area of ​​an anode workshop.

[0032] See also Figures 1 to 3 The embodiment of the utility model provides a dust collecting device for the casting area of ​​an anode workshop, comprising: a first pipe 1, an air induced draft component 2, a dust suction component 3 and a plurality of second pipes 4, the air induced draft component 2 is connected to the first pipe 1, and is used to create a negative pressure inside the first pipe 1; one ends of the plurality of second pipes 4 are all connected to the first pipe 1; the dust suction component 3 comprises a plurality of dust suction units corresponding to the plurality of second pipes 4 one by one, the dust suction unit comprises at least one telescopic tube 31, the telescopic tube 31 is vertically arranged, and the top of the telescopic tube 31 is connected to the corresponding second pipe 4.

[0033] Specifically, the first pipe 1 and the second pipe 4 are arranged above the casting area in the anode workshop, and the first pipe 1 and the second pipe 4 can be connected to the workshop wall by fixing parts, and the fixing method is not specifically limited. The induced draft assembly 2 can lead out the air in the first pipe 1, so that the first pipe 1 is under negative pressure. Since the telescopic pipe 31 is connected to the second pipe 4, and the second pipe 4 is connected to the first pipe 1, when the inside of the first pipe 1 is under negative pressure, the inside of the second pipe 4 and the telescopic pipe 31 are also under negative pressure. At this time, the dust in the anode workshop will enter the telescopic pipe 31 from the bottom of the telescopic pipe 31 along with the air, and then flow through the second pipe 4 and the first pipe 1 in turn, and finally guide the dust-containing air to a preset area, which can be outside the anode workshop or inside a container that can purify or collect dust in the dust-containing air.

[0034] The telescopic tube 31 can change the height of its bottom by telescoping, so that the bottom of the telescopic tube 31 can suction dust at different height areas, and the telescopic tube 31 can be telescoping so that the bottom of the telescopic tube 31 is above the pouring area, so as to quickly suck away the smoke and dust generated during pouring; in addition, when the operator moves on the floor of the anode workshop or there are debris on the ground, the height of the bottom of the telescopic tube 31 can be changed to avoid interference between the telescopic tube 31 and the operator or the debris.

[0035] The dust collecting device for the casting area of ​​the anode workshop of the utility model is provided with an air induced draft component 2 to make the interior of the first pipe 1 present a negative pressure, so that the dust-containing air in the anode workshop enters the telescopic tube 31 from the bottom of the telescopic tube 31, thereby completing the dust collection work; when the dust collection work is performed, the length of the telescopic tube 31 can be changed, so that dust can be removed from areas at different heights in the workshop, and the cleaning range is wider. Furthermore, the telescopic tube 31 can avoid interference with the operator or other components in the workshop by changing the length, so that the dust collection work can be performed for various workshop working conditions, and the adaptability is better; when the dust collection work is not performed, the telescopic tube 31 can be directly retracted, so that the bottom of the telescopic tube 31 is away from the ground, which is not only easy to store, but also does not occupy the ground space, and effectively solves the problem that the dust collection range of the dust removal device is limited and interferes with the travel route of the operator.

[0036] See also Figure 1 In some embodiments, the dust collection unit includes a plurality of telescopic tubes 31; the dust collection device in the casting area of ​​the anode workshop also includes a plurality of connectors 5 corresponding to the plurality of dust collection units, and the connectors 5 are connected to the bottoms of the plurality of telescopic tubes 31 of the corresponding dust collection units.

[0037] Specifically, a plurality of second pipes 4 are arranged at intervals along the first direction, and the second pipes 4 are all arranged along the second direction, the first direction and the second direction are both horizontal directions, and the first direction is perpendicular to the second direction. A plurality of telescopic tubes 31 of the dust suction unit are evenly spaced along the extension direction of the corresponding second pipe 4. By setting a plurality of telescopic tubes 31, the dust suction range of the dust removal unit can be increased. The bottoms of the plurality of telescopic tubes 31 of the dust suction unit are connected by a connector 5, which can reduce the swing amplitude of the lower end of the telescopic tube 31, and the telescopic amplitude of the plurality of telescopic tubes 31 of the dust suction unit can be changed synchronously, so that the height adjustment of the bottom of the telescopic tube 31 is more efficient and convenient.

[0038] See also Figure 1 and Figure 3 In some embodiments, the interior of the connector 5 has a plurality of cavities 51 corresponding one-to-one to the plurality of telescopic tubes 31 of the corresponding dust suction units, and the connector 5 is provided with a plurality of dust suction ports 52 connected to the cavities 51, and any cavity 51 has a plurality of dust suction ports 52 in different directions connected to it, and the cavity 51 is connected to the corresponding telescopic tube 31 through one of the dust suction ports 52.

[0039] Specifically, among the multiple dust suction ports 52, at least one dust suction port 52 facing upward is used to communicate with the bottom of the telescopic tube 31, and the communication method can be bonding, clamping or threaded connection, etc., which is not specifically limited here. The remaining dust suction ports 52 face different directions, so that when the telescopic tube 31 is under negative pressure, the remaining dust suction ports 52 facing different directions can suck dust-containing gas from different areas into the cavity 51, and enter the telescopic tube 31 through the upward dust suction port 52, thereby increasing the dust suction range.

[0040] In addition, the remaining dust suction port 52 can also be connected to the dust hood 6 or the cover. For example, the connector 5 can be a strip structure arranged along the second direction. The remaining dust suction port 52 includes a dust suction port 52 located at the bottom of the connector 5 and two dust suction ports 52 arranged opposite to each other along the first direction. When the dust suction port 52 located at the bottom is connected to the dust hood 6, the two dust suction ports 52 along the first direction can be blocked by the cover to avoid diversion. Similarly, when the two dust suction ports 52 along the first direction are both connected to the dust hood 6, the dust suction port 52 at the bottom can be connected to the cover. There are many ways to set the dust suction port 52, the dust hood 6 and the cover. This embodiment only lists some of them. Those skilled in the art can make simple modifications based on the present utility model according to actual needs.

[0041] In some embodiments, the telescopic tube 31 is a bellows, which includes a telescopic section located in the middle and two non-telescopic sections located on both sides of the telescopic section. The telescopic tube 31 changes the bottom height of the telescopic tube 31 through the telescopic section. The telescopic tube 31 is connected to the second pipe 4 and the connecting piece 5 respectively through the two non-telescopic sections.

[0042] See also Figure 1 In some embodiments, the dust collecting device in the casting area of ​​the anode workshop further includes a lifting assembly 7, which is connected to the dust suction unit and drives the telescopic tube 31 to extend and retract.

[0043] Specifically, the lifting assembly 7 includes a plurality of lifting units corresponding to the plurality of dust collecting units. When the bottom of the telescopic tube 31 of the dust collecting unit is connected to the connecting member 5, the lifting unit can be connected to the connecting member 5, and the height of the bottom of the telescopic tube 31 can be changed by driving the connecting member 5 to rise and fall. The lifting unit can be a vertically arranged cylinder, one end of which is connected to the second pipe 4, and the other end is connected to the connecting member 5.

[0044] See also Figure 1 to Figure 2 In some embodiments, the dust collecting device in the casting area of ​​the anode workshop further includes a plurality of valves 8 corresponding one to one with the plurality of second pipes 4 , and the valves 8 are arranged at one end of the corresponding second pipe 4 connected to the first pipe 1 .

[0045] Specifically, the valve 8 can be a solenoid valve, and the dust collection device in the casting area of ​​the anode workshop also includes a control module connected to the solenoid valve. The solenoid valve is controlled by the control module, so that the conductivity of each second pipe 4 can be individually adjusted, and further the suction force of the dust collection unit corresponding to different second pipes 4 can be individually adjusted, so as to reasonably adjust the suction force according to actual needs, thereby better completing the dust collection work.

[0046] See also Figure 1In some embodiments, the dust collecting device in the casting area of ​​the anode workshop also includes a dust collecting component 9, which includes a dust collecting box 91 and a filter 92. The filter 92 is arranged in the dust collecting box 91 and divides the dust collecting box 91 into an upper chamber and a lower chamber. The upper chamber is connected to the induced draft component 2, and the lower chamber is connected to the first pipe 1.

[0047] Specifically, the filter 92 is used to filter dust. The induced draft assembly 2 can extract the air in the upper chamber, so that the dust box 91 is under negative pressure. At this time, the dust-laden air sucked by the telescopic tube 31 can be introduced into the lower chamber through the second pipe 4 and the first pipe 1. Then, the dust in the dust-laden air is filtered by the filter 92 and remains in the lower chamber, while the clean air after filtering enters the upper chamber from the lower chamber and is finally guided out by the induced draft assembly 2.

[0048] The filter element 92 can be a filter screen or a filter cloth, and the filter element 92 is connected to the inner wall of the dust box 91. When the filter element 92 is a filter cloth, a connecting frame can be first provided to connect to the inner wall of the dust box 91, and then the filter cloth is fixed to the connecting frame, and the shape of the connecting frame is not specifically limited.

[0049] See also Figure 1 to Figure 2 In some embodiments, the dust collecting assembly 9 also includes a cleaning unit, which includes a cleaning piece 93 and a driving mechanism 94. The cleaning piece 93 is located in the lower chamber. The driving mechanism 94 is connected to the cleaning piece 93 and drives the cleaning piece 93 to move so that the cleaning piece 93 contacts the bottom surface of the filter element 92 and moves relative to it.

[0050] Specifically, the driving mechanism 94 drives the cleaning member 93 to contact and move relative to the bottom surface of the filter 92, so that the cleaning member 93 can sweep away the dust attached to the bottom of the filter 92 to prevent the air permeability of the filter 92 from being affected by dust blockage.

[0051] For example, the driving mechanism 94 can drive the cleaning element 93 to rotate, so that the cleaning element 93 contacts and moves relative to the bottom surface of the filter element 92. The filter element 92 can be an arc-shaped structure with a convex middle portion, and the curvature of the filter element 92 is set according to the moving path of the cleaning element 93 during rotation, so that the cleaning element 93 can contact any area of ​​the bottom surface of the filter element 92 during the rotation process, ensuring that the bottom surface of the filter element 92 can be fully cleaned. In addition, setting the filter element 92 to an arc shape can increase the filtering area of ​​the filter element 92 in a limited space and improve the filtering effect.

[0052] See also Figure 1 to Figure 2In some embodiments, the cleaning member 93 may be a brush, and the driving mechanism 94 may be a motor 941 and a rotating shaft. The rotating shaft is horizontally arranged and rotatably connected to the dust box 91. One end of the rotating shaft passes through the dust box 91 and is transmission-connected to the motor 941. The brush is fixed on the rotating shaft, and the rotating shaft is driven by the motor 941 to drive the brush to rotate.

[0053] See also Figure 1 In some embodiments, the dust collecting assembly 9 also includes a dust collecting box 95 and a guide member 96. The dust collecting box 95 is arranged on the bottom surface of the lower chamber. The upper end of the dust collecting box 95 is open. The guide member 96 is arranged above the dust collecting box 95. The guide member 96 is used to guide dust into the dust collecting box 95.

[0054] Specifically, the guide member 96 can be a guide plate arranged obliquely, and the guide member 96 is detachably connected to the inner wall of the lower chamber. When the dust-laden air enters the lower chamber, the dust and impurities in the air can fall into the dust box 95 or onto the guide member 96 under the action of gravity. When there is a lot of dust and impurities accumulated on the guide member 96, some of the dust and impurities on the guide member 96 will slide into the dust box 95 to complete the collection of dust and impurities. An opening for the dust box 95 to enter and exit is provided on the side wall of the lower chamber, and the size of the opening is adapted to the size of at least one side wall of the dust box 95, so that when the dust box 95 is completely placed in the lower chamber, one side wall of the dust box 95 can block the opening near the dust box 95 to prevent dust leakage.

[0055] The dust box 95 is provided with a handle for moving the dust box 95. A switch door is provided on one side of the dust box 91, and opening the switch door can open the upper chamber and the lower chamber at the same time, so that the worker can replace the filter 92 or clean the guide member 96.

[0056] See also Figure 1 to Figure 2 In some embodiments, the induced draft assembly 2 includes an air pump 21 and an air extraction pipe 22. The two ends of the air extraction pipe 22 are respectively connected to the air pump 21 and the upper chamber, and the gas in the upper chamber is extracted through the air pump 21. The number of induced draft assemblies 2 can be multiple, so as to increase the suction force when vacuuming.

[0057] The same or similar numbers in the drawings of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust collecting device for the casting area of ​​an anode workshop, characterized in that: include: First pipeline; an air induction component, connected to the first pipeline and used to create a negative pressure inside the first pipeline; A plurality of second pipes, one end of each of the second pipes being connected to the first pipe; The dust collection assembly includes a plurality of dust collection units corresponding to the plurality of second pipes one by one, wherein the dust collection unit includes at least one telescopic pipe, the telescopic pipe is vertically arranged, and the top of the telescopic pipe is connected to the corresponding second pipe.

2. The dust collecting device for the casting area of ​​the anode workshop according to claim 1 is characterized in that: The dust collection unit comprises a plurality of telescopic tubes; The dust collecting device in the casting area of ​​the anode workshop also includes a plurality of connecting pieces corresponding one-to-one to the plurality of dust collecting units, and the connecting pieces are connected to the bottoms of the plurality of telescopic tubes corresponding to the dust collecting units.

3. The dust collecting device for the casting area of ​​the anode workshop according to claim 2 is characterized in that: The interior of the connecting member has a plurality of cavities corresponding one-to-one to the plurality of telescopic tubes of the corresponding dust suction unit, the connecting member is provided with a plurality of dust suction ports connected to the cavities, and any of the cavities has a plurality of dust suction ports connected to it in different directions, and the cavity is connected to the corresponding telescopic tube through one of the dust suction ports.

4. The dust collecting device for the casting area of ​​the anode workshop according to claim 1, characterized in that: The dust collecting device in the casting area of ​​the anode workshop also includes a lifting component, which is connected to the dust suction unit and drives the telescopic tube to extend and retract.

5. The dust collecting device for the casting area of ​​the anode workshop according to claim 4, characterized in that: The dust collecting device in the casting area of ​​the anode workshop further includes a plurality of connecting pieces corresponding to the plurality of dust collecting units one by one, and the connecting pieces are connected to the bottom of the telescopic pipe of the corresponding dust collecting unit; The lifting assembly includes a plurality of lifting units corresponding to the plurality of dust collecting units one by one, and the lifting units are connected to the connecting member and drive the connecting member to rise and fall.

6. The dust collecting device for the casting area of ​​the anode workshop according to claim 1, characterized in that: The dust collecting device in the casting area of ​​the anode workshop also includes a plurality of valves corresponding one-to-one to the plurality of second pipes, and the valves are arranged at one end of the corresponding second pipe connected to the first pipe.

7. The dust collecting device for the casting area of ​​the anode workshop according to claim 1 is characterized in that: The dust collecting device in the casting area of ​​the anode workshop also includes a dust collecting component, which includes a dust collecting box and a filter. The filter is arranged in the dust collecting box and divides the dust collecting box into an upper chamber and a lower chamber. The upper chamber is connected to the air induced assembly, and the lower chamber is connected to the first pipe.

8. The dust collecting device for the casting area of ​​the anode workshop according to claim 7, characterized in that: The dust collecting assembly also includes a cleaning unit, which includes a cleaning piece and a driving mechanism. The cleaning piece is located in the lower chamber. The driving mechanism is connected to the cleaning piece and drives the cleaning piece to move so that the cleaning piece contacts the bottom surface of the filter element and moves relative to it.

9. The dust collecting device for the casting area of ​​the anode workshop according to claim 8, characterized in that: The driving mechanism is used to drive the cleaning member to rotate; The filter element is in an arc-shaped structure with a convex middle portion, and the cleaning element can contact any area of ​​the bottom surface of the filter element during rotation.

10. The dust collecting device for the casting area of ​​the anode workshop according to claim 7, characterized in that: The dust collecting assembly also includes a dust collecting box and a guide member, wherein the dust collecting box is arranged on the inner bottom surface of the lower chamber, the upper end of the dust collecting box is open, and the guide member is arranged above the dust collecting box, and the guide member is used to guide dust into the dust collecting box.

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