CN217327405U - Dust removing device - Google Patents

Abstract

The utility model provides a dust collector, include: a fixed plate having a plurality of universal wheels connected to one side surface thereof; the box body is fixedly connected with one side of the fixed plate, which is back to the universal wheel, and an accommodating cavity is arranged in the box body; the communicating pipe is arranged in the accommodating cavity, is connected with the inner wall of the accommodating cavity, and at least one end of the communicating pipe penetrates through the box body; at least one air inlet pipe communicated with one end of the communicating pipe penetrating through the box body; the mounting pipe is arranged in the accommodating cavity and communicated with the communicating pipe; the dust removal bag is arranged in the accommodating cavity, is sleeved with the air outlet of the mounting pipe and is connected with the outer wall of the mounting pipe; the exhaust pipe is communicated with the accommodating cavity and is internally provided with an exhaust fan; at least one supporting rod, the two opposite ends of the supporting rod are respectively connected with the fixing plate and the air inlet pipe. Adopt the utility model discloses, on being fixed in the fixed plate of installing the universal wheel with the box of intercommunication intake pipe and blast pipe, the roll with the help of the universal wheel drives the box and removes, need not too much with the help of the manpower, also can freely remove in narrow and small tunnel, and the operating personnel of being convenient for removes.

Description

Dust removal device

technical field

The utility model relates to the technical field of coal mine construction, in particular to a dust removal device.

Background technique

Coal is the main energy supply in my country. According to the different mining forms, coal mines can be divided into underground coal mines and open-pit coal mines. During the mining process of underground coal mines, a large amount of dust will be generated in the roadway. It will adversely affect the health of workers and seriously endanger the health and life safety of workers. Therefore, dust removal equipment needs to be used to control the dust. The existing dust removal equipment is inconvenient to move and has poor flexibility, especially in small roadways, it is inconvenient to move.

Utility model content

In view of this, the present utility model provides a dust removal device, which fixes the box body connected with the air intake pipe and the exhaust pipe on a fixed plate installed with a universal wheel, and drives the box body to move by means of the rolling of the universal wheel, so as to overcome the current situation. There are technical flaws.

The dust removal device provided by the utility model comprises: a fixing plate, one side surface of the fixing plate is connected with a plurality of universal wheels; a box body, the side of the box body and the fixing plate facing away from the universal wheels a fixed connection, an accommodating cavity is arranged in the box; a communication pipe, which is arranged in the accommodating cavity and connected with the inner wall of the accommodating cavity, and at least one end of the communicating pipe penetrates the box; at least an air intake pipe, which is communicated with one end of the communication pipe that runs through the box body; an installation pipe, which is arranged in the accommodating cavity and communicated with the communication pipe; a dust bag, The dust bag is arranged in the accommodating cavity, and is sleeved with an air outlet of the installation pipe, which is connected with the outer wall of the installation pipe; an exhaust pipe, the exhaust pipe communicates with the accommodating cavity, and the exhaust pipe An exhaust fan is arranged in the air duct; at least one support rod, and opposite ends of one of the support rods are respectively connected with the fixing plate and the air intake pipe.

Optionally, the dust removal device further includes a gas collecting hood, the gas collecting hood is communicated with the end of the air intake pipe facing away from the box body, and the cross-sectional diameter of the gas collecting hood is facing away from the box body. gradually increases in the direction.

Optionally, the dust removal device further includes a protective net, and the protective net is circumferentially connected with the inner wall of the gas collecting hood.

Optionally, the dust removal device further includes a telescopic pipe, and opposite ends of the telescopic pipe are respectively connected to the opposite end of the air inlet pipe and the communication pipe; the air inlet pipe is detachably connected to the support rod.

Optionally, an observation window is provided on the box body.

Optionally, the dust removal device further includes an access door, and the access door is detachably connected to the box body.

Optionally, the dust removal device further includes a drain pipe, the drain pipe communicates with the accommodating cavity, and a drain valve is provided on the drain pipe.

Optionally, the dust removal device further includes an intake fan, and the intake fan is arranged in the air intake pipe.

Optionally, the dust removal device further includes a control panel, the control panel is connected to the outer wall of the box, and the output end of the control panel is connected in communication with the control end of the exhaust fan and the control end of the intake fan. .

Optionally, a plurality of air outlet holes are formed through the exhaust pipe, and a protective cover is provided at an end of the exhaust pipe facing away from the box.

The above technical solutions provided by the present utility model, compared with the prior art, at least have the following beneficial effects:

By adopting the dust removal device of the utility model, the box connected with the air intake pipe and the exhaust pipe is fixed on the fixed plate installed with the universal wheel, and the box body is moved by the rolling of the universal wheel, without the need for excessive manpower, even in the It can also move freely in the narrow roadway, which is convenient for the operator to move.

Description of drawings

1 is a schematic diagram of a dust removal device according to an embodiment of the present utility model;

Fig. 2 is a sectional view of the dust removal device shown in Fig. 1;

Fig. 3 is the schematic diagram of the connection assembly between the dust removal bag and the installation pipe in the dust removal device shown in Fig. 2;

Fig. 4 is a partial enlarged view of A in the dust removal device shown in Fig. 2;

FIG. 5 is a partial enlarged view of B in the dust removal device shown in FIG. 2 .

Reference number:

1: Fixed plate; 2: Box body; 3: Connecting pipe; 4: Intake pipe; 5: Installation pipe; 6: Dust bag; 7: Exhaust pipe; 8: Support rod; 9: Universal wheel; 10: Accommodating Cavity; 11: Exhaust fan; 111: First motor; 112: First fan blade; 113: First protective casing; 12: Air collecting hood; 13: Protection net; 14: Telescopic tube; 15: Observation window; 16: Access door; 17: Drain pipe; 18: Drain valve; 19: Inlet fan; 191: Second motor; 192: Second fan blade; 193: Second protective shell; 20: Control panel; 21: Air outlet; 22: protective cover; 23: connecting assembly; 231: first connecting piece; 232: second connecting piece; 233: first fixing block; 234: second fixing block; 235: first anti-skid pad; 236: second anti-skid Pad; 237; Fixtures: 24: Limiting Ring; 25: First Mounting Bracket; 26: Second Mounting Bracket.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the simplified description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, a specific orientation, and a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance. Therein, the terms "first position" and "second position" are two different positions.

Fig. 1 is a schematic diagram of a dust removal device according to an embodiment of the present utility model; Fig. 2 is a cross-sectional view of the dust removal device shown in Fig. 1; Fig. 3 is a connection assembly between a dust removal bag and an installation pipe in the dust removal device shown in Fig. 2 Figure 4 is a partial enlarged view of A in the dust removal device shown in Figure 2.

As shown in Figures 1-4, the dust removal device includes a fixed plate 1, a box body 2, a communication pipe 3, at least one intake pipe 4, an installation pipe 5, a dust bag 6, an exhaust pipe 7 and at least one support rod 8.

A plurality of universal wheels 9 are connected to one side surface of the fixing plate 1; There is an accommodating cavity 10; the communicating pipe 3 is arranged in the accommodating cavity 10 and is connected with the inner wall of the accommodating cavity 10, and at least one end of the communicating pipe 3 penetrates the box body 2; 4 communicates with one end of the communication pipe 3 that penetrates through the box body 2; the installation pipe 5 is arranged in the accommodating cavity 10 and communicates with the communication pipe 3; the dust bag 6 is arranged in the accommodating cavity 10, and the air outlet of the installation pipe 5 is sleeved, and is connected with the outer wall of the installation pipe 5; the exhaust pipe 7 communicates with the accommodating cavity 10, and an exhaust fan 11 is arranged in the exhaust pipe 7; The opposite ends of one of the support rods 8 are respectively connected with the fixing plate 1 and the air intake pipe 4 .

When in use, with the help of the rolling of the universal wheel 9, the entire dust removal device is moved to the position where the dust needs to be treated, and the exhaust fan 11 is turned on. Negative pressure, which further promotes the external dust-containing air to enter the communication pipe 3 through the air intake pipe 4, and into the installation pipe 5 through the communication pipe 3, and finally into the dust bag that sets the installation pipe 5. 6. The dust in the air is filtered and intercepted inside the dust bag 6 by the dust bag 6, and the filtered clean air is dissipated from the dust bag 6, and the clean air from the dust bag 6 is dissipated in the exhaust fan. Under the action of the suction force of 11, it is discharged into the air from the exhaust pipe 7. A certain height of clean water can also be injected into the box body 2, and the clean water submerges a part of the dust removal bag 6, then the clean air discharged from the dust removal bag 6 first enters the clean water, and the moist air escaping from the clean water passes through the The exhaust pipe 7 is discharged into the air, which not only reduces the temperature of the air, but also increases the humidity of the air, thereby improving the comfort of the surrounding environment.

Using the dust removal device of the present invention, the box body 2 connecting the air intake pipe 4 and the exhaust pipe 7 is fixed on the fixing plate 1 on which the universal wheel 9 is installed. The rolling of the box drives the box body 2 to move, and it can move freely even in a narrow roadway without too much manpower, which is convenient for the operator to move.

In this embodiment, the fixing plate 1 is configured as a rectangular parallelepiped body, the fixing plate 1 is connected with one of the universal wheels 9 at the four corners of the lower surface in FIG. 1 , and the box body 2 is hollow A rectangular parallelepiped, as shown in FIG. 2 , the communication pipe 3 is horizontally arranged on the upper part of the accommodating cavity 10 , the left and right ends of the communication pipe 3 respectively penetrate the box 2 , and the left and right ends are respectively connected to the inlet and outlet. Air pipes 4, each of the air intake pipes 4 is supported by one of the support rods 8. As shown in FIG. 2, the lower end of the support rod 8 is fixedly connected with the upper surface of the fixing plate 1. The upper end is connected with the intake pipe 4, and the intake pipe 4 is set as a hollow cylinder. In order to provide a more stable support for the intake pipe 4, the upper end face of the support rod 8 in FIG. An arc-shaped groove with a matching outer diameter of the air pipe 4, the air intake pipe 4 abuts the support rod 8 in the arc-shaped groove. In this embodiment, the communication pipe 3 is vertically communicated with the installation pipe 5 at the central position in the accommodating cavity 10 , and the dust bag 6 is sleeved with the air outlet at the lower end of the installation pipe 5 , and is connected to the installation pipe 5 by means of the connecting assembly 23 . The outer walls of the installation pipe 5 are connected, and the installation pipe 5 is a hollow cylinder. As shown in FIG. 3 , the connecting assembly 23 includes a semicircular first connecting piece 231 and a second connecting piece 232 , and the inner walls of the first connecting piece 231 and the second connecting piece 232 have the same radius, which is the same as the The cross-sectional radii of the installation pipe 5 are matched, the opposite ends of the opening of the first connecting piece 231 are respectively connected with the first fixing blocks 233, and the opposite ends of the opening of the second connecting piece 232 are respectively connected with the second fixing block 233. Fixing block 234, the dust bag 6 is sleeved on the air outlet of the installation pipe 5, and abuts the outer wall of the installation pipe 5, and then the semi-circular first connector 231 and the second The connecting pieces 232 are respectively fitted to the abutting positions of the dust bag 6 and the installation pipe 5 , and the two fixing pieces 237 respectively pass through the first fixing block 233 and the second fixing block 234 on both sides in sequence. , to realize the connection between the first connector 231 and the second connector 232 , that is, to realize the connection between the dust bag 6 and the installation pipe 5 . In order to prevent the first connecting piece 231 and the second connecting piece 232 from sliding down the dust bag 6 and the installation pipe 5 , a first anti-skid pad 235 is connected to the inner wall of the first connecting piece 231 . A second anti-skid pad 236 is connected to the inner wall of the second connecting member 232 . In order to further prevent the loose connection assembly 23 from sliding down and slipping along the installation pipe 5, in FIG. During the sliding process of the assembly 23 , the connecting assembly 23 will not slip off the mounting pipe 5 , but will abut with the limiting ring 24 . In this embodiment, the exhaust pipe 7 penetrates through the box body 2 in the middle of the upper end of the box body 2 in FIG. The exhaust fan 11 , as shown in FIG. 2 and FIG. 4 , the exhaust fan 11 includes a first motor 111 and a first fan blade 112 , and the first motor 111 passes through a first mounting bracket connected to the inner wall of the exhaust pipe 7 25 is erected in the exhaust pipe 7, the first fan blade 112 is fixedly connected with the output shaft of the first motor 111, and rotates under the driving action of the first motor 111, in order to make the first fan The motor 111 is protected from dust interference and prolongs its service life. A first protective casing 113 is provided on the outer cover of the first motor 111 . According to the actual application situation, the specific setting position and setting quantity of the universal wheel 9 on the fixed plate 1 can be adjusted, and the filtering level of the dust particles by the dust bag 6 can be adjusted. The dimensions of the box body 2 , the communication pipe 3 , the intake pipe 4 , the installation pipe 5 , the exhaust pipe 7 and the support rod 8 can be adjusted. The support rod 8 and the intake pipe can be adjusted in size. 4. It can be detachably connected or not. The first mounting bracket 25 and the inner wall of the exhaust pipe 7 can be detachably or non-detachably connected. The connection assembly 23 can be realized in any form. The dust bag 6 is connected to the installation pipe 5 . The communication pipe 3 may also have only one end that penetrates the box body 2 , and only one air intake pipe 4 needs to be provided to communicate with the end of the communication pipe 3 that penetrates the box body 2 .

Optionally, the dust removal device further includes a gas collecting hood 12, the gas collecting hood 12 is communicated with the end of the air intake pipe 4 facing away from the box body 2, and the cross-sectional diameter of the gas collecting hood 12 is at the back. It gradually increases in the direction of the box body 2 . This arrangement increases the area of the air intake pipe 4 for absorbing the external dust-containing air, which is beneficial to improve the dust removal efficiency.

In this embodiment, two gas collecting hoods 12 are provided in total, which are respectively fixedly connected to the end faces of the air inlet pipes 4 on the left and right sides in FIG. The air hoods 12 are all arranged in a trumpet shape, and the cross-sectional diameters are all in the direction away from the box body 2 , that is, gradually increase toward the left and right sides in FIG. 2 . According to the actual application, the change of the cross-sectional diameter of the gas collecting hood 12 can be adjusted.

Optionally, the dust removal device further includes a protective net 13 , and the protective net 13 is circumferentially connected to the inner wall of the gas collecting hood 12 . With this arrangement, the protection net 13 is used to intercept the larger impurities, so as to prevent the larger impurities from entering the air intake pipe 4 and causing blockage.

In this embodiment, a plurality of filter holes are formed through the protective net 13 , and the end of the protective net 13 at the end of the air collecting hood 12 away from the end of the box body 2 and the end of the air collecting hood 12 The inner walls are connected and perpendicular to the axial direction of the gas collecting hood 12 . According to the actual application, the specification of the filter holes of the protective net 13 can be adjusted, and the protective net 13 and the gas collecting hood 12 can be connected detachably or not.

Optionally, the dust removal device further includes a telescopic pipe 14, and opposite ends of the telescopic pipe 14 are respectively connected to the opposite ends of the intake pipe 4 and the communication pipe 3; the intake pipe 4 and the support rod 8 Removable connections. With this arrangement, when the position of absorbing dust needs to be adjusted, the position of the fixing plate 1 and the box body 2 can be adjusted without changing the position of the air intake pipe 4 by adjusting the length of the telescopic rod 14 . That is to say, adjust the position of absorbing dust for easy operation.

In this embodiment, as shown in FIG. 2 , the telescopic tube 14 is specifically set as a serpentine tube, which can be stretched in either the horizontal direction in FIG. 2 or in any direction. 2. The telescopic pipe 14 is communicated between the intake pipe 4 and the communication pipe 3 on the left and right sides, between the telescopic pipe 14 and the intake pipe 4, and between the telescopic pipe 14 and the The communication pipes 13 are connected by flanges, and the air intake pipe 4 is in abutment with the support rod 8 . According to the actual application, the telescopic tube 14 can also be set to other telescopic structures other than the serpentine tube. The length of the telescopic tube 14 can be adjusted. Other connection modes other than flange connection may also be adopted, and any detachable connection mode may be adopted between the air intake pipe 4 and the support rod 8 .

Optionally, an observation window 15 is provided on the box body 2 . The observation window 15 is provided to facilitate observation of the dust collection condition of the dust bag 6 in the box body 2 , and it is also convenient to observe the water level when water is injected into the box body 2 .

In this embodiment, as shown in FIG. 1 , two rectangular observation windows 15 are symmetrically arranged near the left and right sides of the box body 2 , and the extension height of the observation windows 15 is about the height of the box body 2 . half. According to the actual application situation, the specific shape, size, installation number and specific installation position of the observation window 15 on the box body 2 can be adjusted, so that the dust collection of the dust bag 6 in the box body 2 can be observed. condition and water level.

Optionally, the dust removal device further includes an access door 16 , and the access door 16 is detachably connected to the box body 2 . With this arrangement, when the dust bag 6 needs to be replaced, or other components in the box body 2 need to be repaired or replaced, the inspection door 16 is opened, and corresponding operations are performed through the inspection door 16, which is convenient for the staff operate.

In this embodiment, as shown in FIG. 1 , the access door 16 is located in the middle of the box body 2 , and is set in a rectangular shape, and its length is about half of the width of the box body 2 , and bolts are passed at four right angles. The connection between the access door 16 and the box body 2 is realized. According to the actual application, the shape and size of the access door 16 , the specific setting position on the box body 2 , and the specific connection relationship with the box body 2 can be adjusted. The sides can be hinged to the box 2 .

Optionally, the dust removal device further includes a drain pipe 17 , the drain pipe 17 communicates with the accommodating cavity 10 , and a drain valve 18 is provided on the drain pipe 17 . With this arrangement, when the box body 2 is filled with water, when the dust removal operation is not required, the drain valve 18 is opened, and the water in the box body 2 is discharged through the drain pipe 17, which is convenient for work. personnel operation.

In this embodiment, the drain pipe 17 penetrates through the box body 2 at the lower right corner of the box body 2 in FIG. 2 and communicates with the accommodating cavity 10 , and a manual drain valve is provided on the drain pipe 17 18. According to the actual application situation, the specific communication position of the drain pipe 17 and the box body 2 can be adjusted.

Optionally, the dust removal device further includes an intake fan 19 , and the intake fan 19 is arranged in the intake pipe 4 . This arrangement further accelerates the absorption speed of the external dust-containing air, accelerates the circulation speed of the air in the box 2, and finally improves the dust removal efficiency of the dust removal device.

In this embodiment, the intake fans 19 are provided in the intake pipes 4 on the left and right sides of the box body 2 in FIG. 2 . As shown in FIG. 2 and FIG. 5 , the intake fan 19 includes a second motor 191 and a second fan blade 192 , and the second motor 191 is erected on the second mounting bracket 26 connected to the inner wall of the intake pipe 4 . In the intake pipe 4, the second fan blade 192 is fixedly connected to the output shaft of the second motor 191, and rotates under the driving action of the second motor 191, To prevent dust interference and prolong the service life, a second protective casing 193 is provided on the outer cover of the second motor 191 . According to the actual application situation, the intake fan 19 can also be provided in only one side of the intake pipe 4, and the second mounting bracket 26 can be detachably connected to the inner wall of the intake pipe 4, or can be non-detachably connected .

Optionally, the dust removal device further includes a control panel 20, the control panel 20 is connected to the outer wall of the box body 2, and the output end of the control panel 20 is connected to the control end of the exhaust fan 11 and the intake fan 19 is the control terminal communication connection. With this arrangement, the start and stop of the exhaust fan 11 and the intake fan 19 are centrally controlled through the control panel 20, which is convenient for the staff to operate.

In this embodiment, the control panel 20 is connected to the middle and lower part of the box body 2 in FIG. 1 , located below the access door 16 and between the two observation windows 15 , the control panel The start-stop button of the exhaust fan 11 and the start-stop button of the intake fan 19 are arranged on the 20 . By pressing the corresponding start-stop button, the exhaust fan 11 and the intake fan 19 can be controlled to start or stop. According to the actual application situation, the specific connection position of the control panel 20 on the box body 2 can be adjusted, and other control functions can also be integrated on the control panel 20 .

Optionally, a plurality of air outlet holes 21 are formed through the exhaust pipe 7 , and a protective cover 22 is provided at one end of the exhaust pipe 7 facing away from the box body 2 . This arrangement prevents external large debris from entering the box body 2 through the exhaust pipe 7 .

In this embodiment, a plurality of the air outlet holes 21 are spaced apart on the side wall of the exhaust pipe 7 in FIG. 1 , and the end of the exhaust pipe 7 facing away from the box 2 is shown The upper end of 1 is fixedly mounted with the protective cover 22, and the protective cover 22 is in the shape of a cone as a whole. According to the actual application situation, the specific opening position and opening number of the air outlet holes 21 on the exhaust pipe 7 can be adjusted, and the specific shape and size of the protective cover 22 can be adjusted as long as the exhaust pipe can be blocked. 7's air outlet can be.

The following further describes the use process of the dust removal device:

When in use, pour clean water into the box 2 to submerge a part of the dust bag 6, move the entire dust removal device to the position where the dust needs to be treated by the rolling of the universal wheel 9, and turn on the exhaust fan 11. and the intake fan 19, under the suction of the exhaust fan 11 and the intake fan 19, the external dust-containing air enters the communication pipe 3 through the air collecting hood 12 and the intake pipe 4, and passes through the The communication pipe 3 enters the installation pipe 5, and finally enters the dust bag 6 on which the installation pipe 5 is sleeved. The dust in the air is filtered and intercepted by the dust bag 6 inside the dust bag 6. The clean air is dissipated into the water by the dust bag 6 , and the clean and moist air escaped from the water is discharged into the air by the exhaust pipe 7 under the suction of the exhaust fan 11 . When the dust removal position needs to be adjusted according to the change of dust concentration, the overall position of the device can be adjusted by means of the rolling of the universal wheel 9 , or the intake pipe 4 can be adjusted to a new dust removal position by stretching the telescopic tube 14 . When no dust removal operation is required, the drain valve 18 on the drain pipe 17 is opened, and the water in the box 2 is discharged from the drain pipe 17 . When it is observed from the observation window 15 that the dust bag 6 collects too much dust and needs to be replaced, the access door 16 is opened, and relevant operations are performed from the access door 16 .

Using the dust removal device of the present invention, the box body 2 connecting the air intake pipe 4 and the exhaust pipe 7 is fixed on the fixing plate 1 on which the universal wheel 9 is installed. The rolling of the box drives the box body 2 to move, and it can move freely even in a narrow roadway without too much manpower, which is convenient for the operator to move.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. .

Claims (10)

1. A dedusting device, characterized in that, comprising: a fixing plate, one side surface of the fixing plate is connected with a plurality of universal wheels; a box body, the box body is fixedly connected with the side of the fixing plate facing away from the universal wheel, and a accommodating cavity is arranged in the box body; a communication pipe, which is arranged in the accommodating cavity and is connected with the inner wall of the accommodating cavity, and at least one end of the communicating pipe penetrates the box body; at least one air intake pipe, one of the air intake pipes is communicated with one end of the communication pipe that penetrates through the box body; an installation pipe, which is arranged in the accommodating cavity and communicates with the communication pipe; a dust bag, which is arranged in the accommodating cavity and sleeved with the air outlet of the installation pipe, and is connected to the outer wall of the installation pipe; an exhaust pipe, the exhaust pipe is communicated with the accommodating cavity, and an exhaust fan is arranged in the exhaust pipe; At least one support rod, and opposite ends of one support rod are respectively connected with the fixing plate and the air intake pipe. 2. The dust removal device according to claim 1, further comprising: a gas collecting hood, the gas collecting hood is communicated with the end of the air inlet pipe facing away from the box body, and the cross-sectional diameter of the gas collecting hood gradually increases in the direction facing away from the box body. 3. The dust removal device according to claim 2, characterized in that, further comprising: and a protective net, the protective net is circumferentially connected with the inner wall of the gas collecting hood. 4. The dust removal device according to any one of claims 1-3, characterized in that, further comprising: a telescopic pipe, the opposite ends of the telescopic pipe are respectively connected to the opposite ends of the air inlet pipe and the communication pipe; The air intake pipe is detachably connected with the support rod. 5. The dust removal device according to any one of claims 1-3, characterized in that: An observation window is arranged on the box body. 6. The dust removal device according to any one of claims 1-3, characterized in that, further comprising: an access door, the access door is detachably connected to the box body. 7. The dust removal device according to any one of claims 1-3, characterized in that, further comprising: A drain pipe is connected to the accommodating cavity, and a drain valve is arranged on the drain pipe. 8. The dust removal device according to any one of claims 1-3, characterized in that, further comprising: The intake fan is arranged in the intake pipe. 9. The dust removal device according to claim 8, further comprising: The control panel is connected with the outer wall of the box body, and the output end of the control panel is connected in communication with the control end of the exhaust fan and the control end of the intake fan. 10. The dust removal device according to any one of claims 1-3, characterized in that: The exhaust pipe is provided with a plurality of air outlet holes, and the end of the exhaust pipe facing away from the box body is covered with a protective cover.

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