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 removing device

Technical Field

The utility model relates to a colliery construction technical field, concretely relates to dust collector.

Background

Coal is a main energy supply in China, coal mines can be divided into underground coal mines and opencast coal mines according to different mining modes, a large amount of dust is generated in a roadway in the mining process of the underground coal mines, and if the dust is not timely processed, the dust can cause adverse effects on the health of workers and seriously endanger the health and life safety of the workers, so that dust removal equipment is required to be used for treating the dust. The existing dust removing equipment is inconvenient to move, has poor flexibility and is inconvenient to move and operate particularly in a small roadway.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a dust collector, the box that will communicate intake pipe and blast pipe is fixed in on the fixed plate of installing the universal wheel, drives the box with the help of the roll of universal wheel and removes to overcome prior art's defect.

The utility model provides a dust collector includes: the device comprises a fixed plate, a plurality of universal wheels and a plurality of wheels, wherein the surface of one side of the fixed plate is connected with the universal wheels; the box body is fixedly connected with one side of the fixing plate, which is back to the universal wheels, and an accommodating cavity is formed in the box body; the communicating pipe 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 through the box body; the air inlet pipe is communicated with one end of the communicating pipe penetrating through the box body; the mounting pipe is arranged in the accommodating cavity and is communicated with the communicating pipe; the dust removal bag is arranged in the accommodating cavity, sleeved with the air outlet of the mounting pipe and connected with the outer wall of the mounting pipe; the exhaust pipe is communicated with the accommodating cavity, and an exhaust fan is arranged in the exhaust pipe; and the two opposite ends of one support rod are respectively connected with the fixed plate and the air inlet pipe.

Optionally, the dust collector further comprises a gas collecting hood, the gas collecting hood is communicated with one end, back to the box body, of the gas inlet pipe, and the diameter of the cross section of the gas collecting hood is gradually increased in the direction back to the box body.

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

Optionally, the dust removing device further comprises a telescopic pipe, and two opposite ends of the telescopic pipe are respectively communicated with one opposite ends of the air inlet pipe and the communicating pipe; the air inlet pipe is detachably connected with the support rod.

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

Optionally, dust collector still includes the access door, the access door with the box can be dismantled and be connected.

Optionally, the dust collector further comprises a drain pipe, the drain pipe is communicated with the containing cavity, and a drain valve is arranged on the drain pipe.

Optionally, the dust removing device further comprises an air inlet fan, and the air inlet fan is arranged in the air inlet pipe.

Optionally, the dust collector further comprises a control panel, the control panel is connected with the outer wall of the box body, and the output end of the control panel is in communication connection with the control end of the exhaust fan and the control end of the air inlet fan.

Optionally, a plurality of air outlets are formed in the exhaust pipe in a penetrating mode, and a protective cover covers one end, back to the box body, of the exhaust pipe.

The utility model provides an above technical scheme compares with prior art, has following beneficial effect at least:

adopt the utility model discloses dust collector, on the box that will communicate intake pipe and blast pipe was fixed in the fixed plate of installing the universal wheel, the roll with the help of the universal wheel drove the box and removes, need not too much with the help of the manpower, even also can freely remove in narrow and small tunnel, the operating personnel of being convenient for remove.

Drawings

Fig. 1 is a schematic view of a dust removing apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the dust extraction device shown in FIG. 1;

FIG. 3 is a schematic view of a connection assembly between a dust bag and a mounting tube in the dust collector of FIG. 2;

FIG. 4 is an enlarged view of a portion A of the dust removing device shown in FIG. 2;

fig. 5 is a partially enlarged view of the dust removing device shown in fig. 2 at B.

Reference numerals:

1: a fixing plate; 2: a box body; 3: a communicating pipe; 4: an air inlet pipe; 5: installing a pipe; 6: a dust removal bag; 7: an exhaust pipe; 8: a support bar; 9: a universal wheel; 10: an accommodating chamber; 11: an exhaust fan; 111: a first motor; 112: a first fan blade; 113: a first protective housing; 12: a gas-collecting hood; 13: a protective net; 14: a telescopic pipe; 15: an observation window; 16: an access door; 17: a drain pipe; 18: a drain valve; 19: a fan inlet; 191: a second motor; 192: a second fan blade; 193: a second protective housing; 20: a control panel; 21: an air outlet; 22: a protective cover; 23: a connecting assembly; 231: a first connecting member; 232: a second connecting member; 233: a first fixed block; 234: a second fixed block; 235: a first non-slip mat; 236: a second non-slip mat; 237; fixing the components: 24: a limiting ring; 25: a first mounting bracket; 26: a second mounting bracket.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or component to which the reference is made must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Fig. 1 is a schematic view of a dust removing apparatus according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of the dust extraction device shown in FIG. 1; FIG. 3 is a schematic view of a connection assembly between a dust bag and a mounting tube in the dust collector of FIG. 2; fig. 4 is a partially enlarged view of a portion a of the dust removing device shown in fig. 2.

As shown in fig. 1 to 4, the dust removing apparatus includes a fixing plate 1, a case 2, a communicating pipe 3, at least one air inlet pipe 4, a mounting pipe 5, a dust removing bag 6, an air outlet pipe 7, and at least one support rod 8.

A plurality of universal wheels 9 are connected to the surface of one side of the fixed plate 1; the box body 2 is fixedly connected with one side of the fixed plate 1, which is back to the universal wheels 9, and an accommodating cavity 10 is formed in the box body 2; the communicating pipe 3 is arranged in the accommodating cavity 10 and connected with the inner wall of the accommodating cavity 10, and at least one end of the communicating pipe 3 penetrates through the box body 2; one air inlet pipe 4 is communicated with one end of the communicating pipe 3 penetrating through the box body 2; the mounting pipe 5 is arranged in the accommodating cavity 10 and communicated with the communicating pipe 3; the dust removing bag 6 is arranged in the accommodating cavity 10, sleeved with the air outlet of the mounting pipe 5 and connected with the outer wall of the mounting pipe 5; the exhaust pipe 7 is communicated 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 connected to the fixing plate 1 and the air inlet pipe 4, respectively.

During the use, with the help of universal wheel 9's roll, will be whole dust collector removes the position that needs to handle the dust, opens exhaust fan 11 under exhaust fan 11's suction operation, form the negative pressure in the box 2, and then make the outside contain the dust air warp intake pipe 4 gets into communicating pipe 3, and warp 3 get into communicating pipe 3 get into installation pipe 5, finally get into the cover and establish installation pipe 5 dust bag 6, dust in the air is by dust bag 6 filters the interception is in inside the dust bag 6, the clean air after the filtration by dust bag 6 effluvium, effluvium the clean air of dust bag 6 is in under exhaust fan 11's the suction effect, by exhaust pipe 7 discharges to in the air. The box 2 can also pour into the clear water of take the altitude into, and the clear water submerges partly dust bag 6 then follows the clear water is advanced into to exhaust clean air in the dust bag 6, and the moist air that escapes in the clear water is again through blast pipe 7 discharges to the air in, has both reduced the temperature of air, has improved the humidity of air again to the travelling comfort of surrounding environment has been promoted.

Adopt the utility model discloses dust collector will communicate intake pipe 4 with blast pipe 7 box 2 is fixed in and installs universal wheel 9 on the fixed plate 1, with the help of the roll of universal wheel 9 drives box 2 removes, need not too much with the help of the manpower, even also can freely remove in narrow and small tunnel, the operating personnel of being convenient for remove.

In this embodiment, the fixing plate 1 is a rectangular plate, the fixing plate 1 is connected to one universal wheel 9 at each of four corners of the lower surface in fig. 1, the box 2 is a hollow rectangular parallelepiped, as shown in fig. 2, the communicating tube 3 is horizontally disposed on the upper portion of the accommodating chamber 10, the left and right ends of the communicating tube 3 respectively penetrate through the box 2, and the left and right ends of the communicating tube 3 are respectively communicated with the air inlet tubes 4, each air inlet tube 4 is supported by one supporting rod 8, as shown in fig. 2, the lower end of the supporting rod 8 is fixedly connected to the upper surface of the fixing plate 1, the upper end of the supporting rod 8 is connected to the air inlet tube 4, the air inlet tube 4 is a hollow cylinder, in order to provide a more stable support for the air inlet tube 4, an upper end surface of the supporting rod 8 in fig. 2 is provided with a circular arc-shaped groove matching the outer diameter of the air inlet tube 4, the air inlet pipe 4 is abutted to the support rod 8 in the circular arc-shaped groove. In this embodiment, communicating pipe 3 is in central point in holding chamber 10 puts perpendicular intercommunication installation pipe 5, dust bag 6 cover is established the gas outlet of installation pipe 5 lower extreme to with the help of coupling assembling 23 with the outer wall of installation pipe 5 is connected, installation pipe 5 is hollow cylinder. As shown in fig. 3, the connection assembly 23 includes a first connector 231 and a second connector 232 in a semicircular shape, the radius of the inner wall of the first connector 231 is the same as that of the inner wall of the second connector 232, the first connector 231 is matched with the radius of the cross section of the installation pipe 5, the two opposite ends of the opening of the first connector 231 are respectively connected with a first fixing block 233, the two opposite ends of the opening of the second connector 232 are respectively connected with a second fixing block 234, the dust removal bag 6 is sleeved on the air outlet of the installation pipe 5 and is abutted against the outer wall of the installation pipe 5, then the first connector 231 and the second connector 232 in a semicircular shape are respectively attached to the positions of the dust removal bag 6 and the abutment of the installation pipe 5, and then two fixing members 237 respectively penetrate through the first fixing block 233 and the second fixing block 234 on both sides in sequence, so as to realize the connection of the first connector 231 and the second connector 232, i.e. to achieve the connection of the dust bag 6 to the mounting tube 5. In order to prevent the first connector 231 and the second connector 232 from sliding down along the dust removing bag 6 and the mounting pipe 5, a first anti-slip pad 235 is connected to the inner wall of the first connector 231, and a second anti-slip pad 236 is connected to the inner wall of the second connector 232. In order to further prevent the connecting assembly 23 from sliding down and slipping along the installation tube 5, an annular stop ring 24 is circumferentially connected to the outer wall close to the air outlet of the installation tube 5 in fig. 2, so that the connecting assembly 23 cannot slip off the installation tube 5 but abuts against the stop ring 24 in the sliding down process of the connecting assembly 23. In this embodiment, the exhaust pipe 7 is in fig. 2 the upper end middle part of box 2 runs through box 2, with hold the chamber 10 intercommunication, be provided with in the exhaust pipe 7 exhaust fan 11, as shown in fig. 2 and 4, exhaust fan 11 includes first motor 111 and first flabellum 112, first motor 111 erects in the exhaust pipe 7 through with the first installing support 25 of the inner wall connection of exhaust pipe 7, first flabellum 112 with the output shaft fixed connection of first motor 111 rotate under the drive action of first motor 111, for the messenger first motor 111 avoids the dust interference, increase of service life the outside cover of first motor 111 is equipped with first protective housing 113. According to the practical application, the universal wheel 9 is in concrete position and the quantity that sets up on the fixed plate 1 can be adjusted, dust bag 6 can be adjusted dust particle's filtration rank, fixed plate 1 the box 2 communicating pipe 3 intake pipe 4 installation pipe 5 blast pipe 7 reaches the size of bracing piece 8 all can be adjusted, bracing piece 8 with intake pipe 4 can dismantle the connection, also can not dismantle the connection, first installing support 25 with the inner wall of blast pipe 7 can dismantle the connection, also can not dismantle the connection, coupling assembling 23 can realize in any form dust bag 6 with installation pipe 5's connection. Communicating pipe 3 also can only have one end to run through box 2, then only need set up one intake pipe 4, with communicating pipe 3 runs through that one end intercommunication of box 2 can.

Optionally, the dust removing device further comprises a gas collecting hood 12, the gas collecting hood 12 is communicated with one end of the air inlet pipe 4, which faces away from the box body 2, and the diameter of the cross section of the gas collecting hood 12 gradually increases in a direction facing away from the box body 2. Due to the arrangement, the area of the air inlet pipe 4 for absorbing outside dust-containing air is enlarged, and the dust removal efficiency is improved.

In this embodiment, two gas collecting hoods 12 are provided, and are respectively and fixedly connected with the end surfaces of the left and right sides of the intake pipe 4 far away from the box body 2 in fig. 2, and the two gas collecting hoods 12 are both in a horn shape, and the diameters of the cross sections are both in the direction back to the box body 2, that is, gradually increased toward the left and right sides in fig. 2. The diameter of the cross section of the gas collecting channel 12 can be varied according to the actual application.

Optionally, the dust removing device further comprises a protective net 13, and the protective net 13 is circumferentially connected with the inner wall of the gas collecting channel 12. By means of the arrangement, the protective net 13 is used for intercepting large impurities, and the large impurities are prevented from entering the air inlet pipe 4 to cause blockage.

In this embodiment, a plurality of filtering holes are formed through the protective screen 13, and the end of the protective screen 13, which is located at the end of the gas collecting hood 12 far away from the box 2, is connected to the inner wall of the gas collecting hood 12 and is perpendicular to the axial direction of the gas collecting hood 12. According to the practical application, the size of the filtering holes of the protective net 13 can be adjusted, and the protective net 13 and the gas collecting hood 12 can be detachably connected or not detachably connected.

Optionally, the dust removing device further comprises an extension tube 14, and opposite ends of the extension tube 14 are respectively communicated with one end of the air inlet tube 4 opposite to the communicating tube 3; the air inlet pipe 4 is detachably connected with the support rod 8. By means of the arrangement, when the position for absorbing dust needs to be adjusted, the position of the air inlet pipe 4 can be adjusted by adjusting the length of the telescopic rod 14 without changing the positions of the fixed plate 1 and the box body 2, namely the position for absorbing dust is adjusted, and operation is facilitated.

In this embodiment, as shown in fig. 2, the extension tube 14 is specifically a coiled tube, and can be stretched in the horizontal direction in fig. 2, or in any direction, in fig. 2, the extension tubes 14 are respectively connected between the air inlet tube 4 and the communication tube 3 on the left and right sides of the box body 2, the extension tubes 14 are connected between the air inlet tube 4 and the communication tube 14, and the extension tubes 14 are connected with the communication tube 13 through flanges, and the air inlet tube 4 is abutted to the support rod 8. According to practical application, the telescopic pipe 14 can be set to be other telescopic structures besides a coiled pipe, the length of the telescopic pipe 14 can be adjusted, the telescopic pipe 14, the air inlet pipe 4 and the communication pipe 3 can be connected in other connection modes except flange connection, and the air inlet pipe 4 and the support rod 8 can be connected in any detachable mode.

Optionally, the box 2 is provided with an observation window 15. Set up observation window 15 is convenient for observe in the box 2 the collection dirt condition of dust bag 6, when pouring into water in the box 2, also be convenient for observe the water level.

In the present embodiment, as shown in fig. 1, two rectangular observation windows 15 are symmetrically disposed near left and right sides of the box body 2, and the extension height of the observation window 15 is about half of the height of the box body 2. According to practical application, the specific shape and size, the number of the observation windows 15 and the specific arrangement position on the box body 2 can be adjusted, and the dust collection condition and the water level of the dust removal bag 6 in the box body 2 can be observed.

Optionally, the dust removing device further comprises an access door 16, and the access door 16 is detachably connected with the box body 2. With the arrangement, when the dust removal bag 6 needs to be replaced or other elements in the box body 2 need to be overhauled or replaced, the access door 16 is opened, corresponding operation is carried out through the access door 16, and the operation of workers is facilitated.

In this embodiment, as shown in fig. 1, the access door 16 is located in the middle of the box body 2, and is configured to be rectangular, and the length of the access door is about half of the width of the box body 2, and the access door 16 is connected to the box body 2 through bolts at four right-angle positions. The size of the access door 16, the specific location on the box 2, and the specific connection relationship with the box 2 can be adjusted according to the practical application, for example, one side of the access door 16 can be hinged with the box 2.

Optionally, the dust removing device further comprises a water drainage pipe 17, the water drainage pipe 17 is communicated with the accommodating cavity 10, and a water drainage valve 18 is arranged on the water drainage pipe 17. With the arrangement, when water is filled in the box body 2 and dust removal operation is not required, the drain valve 18 is opened to drain the water in the box body 2 through the drain pipe 17, so that operation of workers is facilitated.

In this embodiment, the drainage pipe 17 penetrates the box body 2 at the lower right corner of the box body 2 in fig. 2 and is communicated with the accommodating cavity 10, and a manual drainage valve 18 is arranged on the drainage pipe 17. The specific communication position of the drain pipe 17 and the box body 2 can be adjusted according to the practical application.

Optionally, the dust removing device further comprises an air inlet fan 19, and the air inlet fan 19 is disposed in the air inlet pipe 4. By the arrangement, the absorption speed of the outside dust-containing air is further increased, the circulation speed of the air in the box body 2 is increased, and the dust removal efficiency of the dust removal device is finally improved.

In this embodiment, the air intake fans 19 are disposed in the air intake ducts 4 on both left and right sides of the case 2 in fig. 2. As shown in fig. 2 and 5, the intake fan 19 includes a second motor 191 and a second fan blade 192, the second motor 191 is mounted in the intake duct 4 through a second mounting bracket 26 connected to an inner wall of the intake duct 4, the second fan blade 192 is fixedly connected to an output shaft of the second motor 191, and rotates under the driving action of the second motor 191, and a second protective housing 193 is disposed on an outer cover of the second motor 191 to prevent the second motor 191 from being interfered by dust and to prolong the service life of the second motor 191. According to practical application, the air intake fan 19 may be disposed in only one side of the air intake duct 4, and the second mounting bracket 26 may be detachably connected to the inner wall of the air intake duct 4, or may not be detachably connected.

Optionally, the dust removing device further includes a control panel 20, the control panel 20 is connected to the outer wall of the box 2, and an output end of the control panel 20 is in communication connection with a control end of the exhaust fan 11 and a control end of the intake fan 19. By means of the arrangement, the control panel 20 is used for controlling the starting and stopping of the exhaust fan 11 and the air inlet fan 19 in a centralized manner, and operation of workers is facilitated.

In this embodiment, control panel 20 and fig. 1 the well sub-unit connection of box 2 is located the below of access door 16, and be located two between observation window 15, control panel 20 is last to be provided with the start-stop button of exhaust fan 11 with advance the start-stop button of fan 19, through pressing the corresponding start-stop button, can control right exhaust fan 11 with advance opening or stopping of fan 19. According to practical application, the connection position of the control panel 20 on the box body 2 can be adjusted, and other control functions can be integrated on the control panel 20.

Optionally, a plurality of air outlets 21 are formed in the exhaust pipe 7 in a penetrating manner, and a protective cover 22 is covered at one end of the exhaust pipe 7, which faces away from the box body 2. This arrangement prevents external large foreign materials from entering the housing 2 through the exhaust pipe 7.

In this embodiment, the side wall of the exhaust pipe 7 in fig. 1 is provided with a plurality of air outlet holes 21 at intervals, one end of the exhaust pipe 7, which faces away from the box body 2, that is, the upper end in fig. 1, is fixedly provided with the protective cover 22, and the protective cover 22 is integrally conical. According to practical application, the specific opening position and the 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 air outlet of the exhaust pipe 7 can be blocked.

The use of the dust removing device is further described as follows:

during the use 2 inside clear water that pours into of box, submergence is partly dust bag 6, with the help of universal wheel 9's roll will be whole dust collector removes to the position that needs the processing dust, opens exhaust fan 11 with fan 19 advances exhaust fan 11 with under fan 19's the suction operation, outside contains the dust air warp gas collecting channel 12 with intake pipe 4 gets into communicating pipe 3, and the warp communicating pipe 3 gets into installation pipe 5 finally gets into the cover and establishes installation pipe 5 dust bag 6 in the air, dust quilt in the air dust bag 6 filters the interception and is in inside dust bag 6, filtered clean air by dust bag 6 effluvium to aquatic, the clean humid air of escaping from the aquatic is in under exhaust fan 11's suction effect, by exhaust pipe 7 discharges to in the air. When the dust removal position is required to be adjusted according to the change of dust concentration, the position of the whole device can be adjusted by means of the rolling of the universal wheels 9, and the air inlet pipe 4 can be driven to be adjusted to a new dust removal position by stretching the telescopic pipe 14. When the dust removing operation is not required, the drain valve 18 of the drain pipe 17 is opened, and the water in the tank 2 is drained through the drain pipe 17. When the observation window 15 observes that the dust collection bag 6 is too much to be replaced, the access door 16 is opened, and relevant operations are carried out from the access door 16.

Adopt the utility model discloses dust collector will communicate intake pipe 4 with blast pipe 7 box 2 is fixed in and installs universal wheel 9 on the fixed plate 1, with the help of the roll of universal wheel 9 drives box 2 removes, need not too much with the help of the manpower, even also can freely remove in narrow and small tunnel, the operating personnel of being convenient for remove.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.

Claims (10)

1. A dust removing device characterized by comprising:

the device comprises a fixed plate, a plurality of universal wheels and a plurality of wheels, wherein the surface of one side of the fixed plate is connected with the universal wheels;

the box body is fixedly connected with one side of the fixing plate, which is back to the universal wheels, and an accommodating cavity is formed in the box body;

the communicating pipe 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 through the box body;

the air inlet pipe is communicated with one end of the communicating pipe penetrating through the box body;

the mounting pipe is arranged in the accommodating cavity and is communicated with the communicating pipe;

the dust removal bag is arranged in the accommodating cavity, sleeved with the air outlet of the mounting pipe and connected with the outer wall of the mounting pipe;

the exhaust pipe is communicated with the accommodating cavity, and an exhaust fan is arranged in the exhaust pipe;

and the two opposite ends of one support rod are respectively connected with the fixed plate and the air inlet pipe.

2. The dust removing device according to claim 1, further comprising:

the gas collecting hood is communicated with one end, back to the box body, of the gas inlet pipe, and the diameter of the cross section of the gas collecting hood is gradually increased in the direction back to the box body.

3. The dust removing device according to claim 2, further comprising:

and the protective net is circumferentially connected with the inner wall of the gas collecting hood.

4. A dust removing apparatus according to any one of claims 1 to 3, further comprising:

the opposite ends of the extension tube are respectively communicated with one end of the air inlet tube opposite to the communicating tube;

the air inlet pipe is detachably connected with the support rod.

5. A dust removing device according to any one of claims 1 to 3, wherein:

an observation window is arranged on the box body.

6. A dust removing apparatus according to any one of claims 1 to 3, further comprising:

the access door, the access door with the connection can be dismantled to the box.

7. A dust removing apparatus according to any one of claims 1 to 3, further comprising:

the drain pipe, the drain pipe intercommunication hold the chamber, be provided with the drain valve on the drain pipe.

8. The dust removing apparatus according to any one of claims 1 to 3, further comprising:

and the air inlet fan is arranged in the air inlet pipe.

9. The dust removing device according to claim 8, further comprising:

the control panel, control panel with the outer wall of box is connected, control panel's output with the control end of exhaust fan reaches the control end communication connection of fan advances.

10. A dust removing device according to any one of claims 1 to 3, wherein:

a plurality of air outlet holes are formed in the exhaust pipe in a penetrating mode, and a protective cover covers one end, back to the box body, of the exhaust pipe.

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