CN213645241U

CN213645241U - Nitrogen gas pipeline cleaning device

Info

Publication number: CN213645241U
Application number: CN202021626539.5U
Authority: CN
Inventors: 孙幼清; 周世标
Original assignee: Wuhan Tuteng Industry & Trade Development Co ltd
Current assignee: Wuhan Tuteng Industry & Trade Development Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-07-09
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a nitrogen gas pipeline cleaning device, include: the device comprises a fixed ring, a brush ring, a fixed groove, a wheel carrier, a fixed block, a rubber wheel, a connecting frame, a dust collecting pump and the like; the inner wall and two side walls of the brush ring are semi-wrapped and fixed by the fixing ring, three fixing grooves which are arranged at equal intervals in a circumferential manner are formed in the inner wall of the fixing ring, two rubber wheels are fixed on two sides of each wheel carrier, a fixing block is arranged in the middle of each wheel carrier, the fixing blocks are embedded in the fixing grooves, three wheel carriers are mounted in the three fixing grooves through the fixing blocks, a connecting frame is fixed on each of the front side and the rear side of one wheel carrier through bolts, a dust collecting pump is connected below the two connecting frames in a clamping manner, and the traveling motor is connected with the rubber wheels through a coupling; the utility model has the advantages that: the problem of traditional air-blowing formula clean mode, when some more stubborn dust of air-blowing, hardly peel off the dust from the inner wall of nitrogen gas pipeline, cause clean not thorough is solved.

Description

Nitrogen gas pipeline cleaning device

Technical Field

The utility model relates to the pipe-line equipment field specifically is a nitrogen gas pipeline cleaning device.

Background

The nitrogen pipeline is used as a pipeline for conveying nitrogen, the quality requirement of the inner wall of the pipeline is strict, and the inner wall must be kept smooth and clean; before the nitrogen pipeline is used for conveying and producing, dust which can pollute the product possibly exists in the pipeline and needs to be removed through purging; dust remaining in the pipeline can interfere with impurities of working gas to influence the product quality; in a word, the purpose of air-blowing is in order to clean the pipeline in order to eliminate the factor that probably influences product quality and production safety, but current nitrogen gas pipeline adopts the air-blowing formula mostly, and when some more stubborn dust of air-blowing, it is difficult to peel off the dust from the inner wall of nitrogen gas pipeline, causes the not thorough consequence of cleaning, so the prior art needs to have a nitrogen gas pipeline cleaning device that can carry out the scrubbing and collection with the more stubborn dust of nitrogen gas pipeline inner wall.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nitrogen gas pipeline cleaning device to solve the problem mentioned in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a nitrogen line cleaning apparatus comprising: the device comprises a fixed ring, a brush ring, a fixed groove, a wheel carrier, a fixed block, a rubber wheel, a connecting frame, a dust collecting pump, a dust collecting pipe, a dust collecting hopper, a bayonet lock, a walking motor, a motor bracket, a rubber ring, an ash collecting box, a pump shell, a dust collecting motor, a propeller, a filter cover, a connecting block, an air outlet, a buckle, a retaining ring, a dust collecting opening and an air hole; the brush ring is of a ring structure made of sponge materials or network fiber materials, the inner wall and two side walls of the brush ring are semi-wrapped and fixed by the fixing ring, the inner wall of the fixing ring is provided with three fixing grooves which are arranged at equal intervals in a circumferential manner, the middle part of the wheel carrier is of a square rod shape, two sides of the wheel carrier are respectively fixed with two rubber wheels by adopting triangular brackets, the rubber wheels are fixed on the front side and the rear side of the wheel carrier by utilizing shaft rods and bearings, a rotating pair is formed between the rubber wheels and the wheel carrier, the middle part of the wheel carrier is provided with a fixing block, the cross section outline of the fixing block is consistent with the cross section inner outline of the fixing groove, the fixing block is embedded in the fixing grooves, three groups of wheel carriers are arranged in the three fixing grooves in common through the fixing blocks, the front side and the rear side of one of the wheel carrier are respectively fixed with a connecting frame by adopting bolts, the, the dust suction hopper is of a hollow shell structure which is through up and down; a motor support is fixed on one of the connecting frames connected with the wheel frame through a bolt, the upper portion of the motor support is bent below one group of rubber wheels to form a horizontal structure, a walking motor is fixed on the horizontal structure of the motor support through a bolt, and the output end of the walking motor is connected with the shaft rod of the rubber wheel on the same side of the walking motor through a coupler.

As a further aspect of the present invention: the dust collection pump comprises a dust collection box, a pump shell, a dust collection motor, a propeller, a filter cover, a connecting block, an air outlet, buckles, a retaining ring and a dust collection port, wherein the pump shell is of a hollow shell structure which is sealed up and down, a circular hole position is arranged in the middle of the lower surface of the pump shell to form an air hole, the dust collection motor is fixed above the air hole through a support, the output end of the dust collection motor is positioned below the air hole, the propeller is fixed at the output end of the dust collection motor through a clamping key, the filter cover with an upper opening is fixed at the bottom of the pump shell through a screw, at least four groups of buckles are arranged below the pump shell, the dust collection box is of a cylindrical structure with an upper opening, a circle of concentric convex rings are arranged at the upper opening of the dust collection box to form the retaining ring, the outline of the retaining ring is consistent with the surface outline of the pump shell, the retaining ring, the dust collecting port is of a cylindrical structure, the lower portion of the dust collecting port is located below the pump shell and is not communicated with the interior of the pump shell and the interior of the dust collecting box, the pump shell is provided with an opening to form an air outlet, the pump shell is fixedly connected with a connecting block of a plate-shaped structure, the connecting block is provided with a screw hole for connecting the connecting frame, and the connecting block penetrates through the screw hole and is fixedly connected with the connecting frame through a bolt.

As a further aspect of the present invention: the filter mantle is formed by a filter gauze with three hundred meshes and a supporting frame, the upper part and the lower part of the supporting frame are circular ring structures, the upper circular ring and the lower circular ring are connected by adopting a vertical rod, so that the supporting frame is in a frame structure with an upper opening and a lower opening, and the filter gauze is covered on the side wall and the bottom surface of the supporting frame, so that the whole filter mantle is in a cylindrical structure with an upper opening.

As a further aspect of the present invention: the fixed part of fixed slot and fixed block is equipped with a round hole jointly, runs through a bayonet lock in the round hole, and the one end of bayonet lock is equipped with spacing post, and the other end of bayonet lock is equipped with a rubber ring, and the diameter of rubber ring slightly is greater than the diameter of round hole, and the diameter of bayonet lock slightly is less than the diameter of round hole.

As a further aspect of the present invention: the lower part of the dust suction hopper is arc-shaped.

As a further aspect of the present invention: the dust collection pipe adopts a universal bamboo joint air pipe.

As a further aspect of the present invention: the distance from the edge of the brush ring to the circle center of the brush ring is larger than the distance from the rubber wheel to the circle center of the brush ring, and the distance from the rubber wheel to the circle center of the brush ring is equal to the inner diameter of the nitrogen pipeline to be cleaned.

When in use, the device is integrally arranged in a nitrogen pipeline, strong wind is added on one side of the pipeline to carry out traditional air-blowing type cleaning operation, all rubber wheels are tightly attached to the inner wall of the nitrogen pipeline to play a role of supporting the whole device, then a power supply is connected to the walking motor and the dust absorption motor, the walking motor and the dust absorption motor are started to control the walking motor and the dust absorption motor to rotate, the walking motor drives the connected rubber wheels to rotate when rotating, and further drives the device to integrally move in the nitrogen pipeline, because the distance from the edge of the brush ring to the circle center of the brush ring is larger than the distance from the rubber wheels to the circle center of the brush ring, and the distance from the rubber wheels to the circle center of the brush ring is equal to the inner diameter of the cleaned nitrogen pipeline, the brush ring can be extruded and compressed by the pipeline to generate elastic deformation, under the action of the elastic force of the brush ring, the outer wall of the brush ring can be tightly attached to the inner wall, the dust collecting device falls to the bottom of the inner wall of the pipeline, when the dust collecting motor rotates, the dust collecting motor drives the propeller to move, the propeller generates pumping force from bottom to top, because the lower part of the dust collecting opening is positioned below the pump shell, the dust collecting opening is not communicated with the interior of the pump shell and the interior of the dust collecting box, according to the aerodynamics and the pressure principle, negative pressure is generated in the dust collecting box under the action of pumping force, the pumping force is generated at the dust collecting opening under the action of negative pressure, the dust collecting opening also generates pumping force through the dust collecting hopper connected with the dust collecting pipe, the dust collecting hopper extracts dust brushed by the brush ring, the extracted dust is collected by the dust collecting hopper and is conveyed into the dust collecting box by the dust collecting pipe, the collected dust is filtered by the filter cover and falls into the dust collecting box and is collected by the dust collecting box, and the position of the dust collecting pipe can be adjusted because the dust collecting pipe adopts the universal bamboo, and because the lower part of the dust suction hopper is arc-shaped, the dust suction hopper can be adjusted to be closer to the inner wall of the pipeline, because of the action of gravity of the dust collection pump, the dust suction hopper can be always positioned at the lower part, the inner wall of the pipeline is brushed for a plurality of times, the inner wall of the pipeline can be brushed cleanly, the pipeline can also absorb dust raised in the dust cleaning process, the fixing ring and the brush ring can be changed in size according to the inner diameter of the pipeline, when the pipeline is changed, all clamping pins are drawn out, the original fixing ring and the original brush ring are taken down and then changed with the fixing ring and the brush ring which need to be changed, because one end of each clamping pin is provided with the limiting column, the other end of each clamping pin is provided with the rubber ring, the diameter of each rubber ring is slightly larger than that of the. So insert the round hole in-process on the fixed slot at the bayonet lock, because elastic deformation can take place for the rubber circle the bayonet lock of being convenient for inserts, insert the fixed slot at the bayonet lock, behind the fixed block, the rubber circle recovers, because the diameter of rubber circle slightly is greater than the diameter of round hole, so, can avoid the bayonet lock to deviate from in the round hole, and then prevent that the fixed block from deviating from in the fixed slot (the control mode of walking motor and dust absorption motor can be for the wired control of sufficient long wire connection power, also can be wireless control from taking power and controller, and two kinds of control modes all can regard as the embodiment of this application, and the control mode and the control principle of walking motor and dust absorption motor do not regard as the protection scope of this application.

Compared with the prior art, the beneficial effects of the utility model are that:

through the establishment of brush circle, guaranteed to hug closely nitrogen gas pipeline inner wall and cleaned the brush operation, guaranteed self-propelled operation through the establishment of rubber wheel, solved traditional air-blowing formula clean mode, when some more stubborn dust of air-blowing, hardly peel off the inner wall of dust from nitrogen gas pipeline, cause clean not thorough problem.

Drawings

Fig. 1 is a schematic perspective view of a nitrogen pipeline cleaning device.

FIG. 2 is a schematic view showing an installation structure of a dust collecting pump in the nitrogen gas pipeline cleaning apparatus.

FIG. 3 is a schematic cross-sectional view of a nitrogen line cleaning apparatus.

Fig. 4 is a sectional view showing an internal structure of a dust collecting pump in the nitrogen gas pipeline cleaning apparatus.

Fig. 5 is a schematic front side view of a nitrogen line cleaning apparatus.

FIG. 6 is a schematic view of the structure of the chuck pin in the nitrogen gas pipeline cleaning device.

In the figure: 1-fixed ring, 2-brush ring, 3-fixed groove, 4-wheel carrier, 5-fixed block, 6-rubber wheel, 7-connecting frame, 8-dust collection pump, 9-dust collection pipe, 10-dust collection hopper, 11-bayonet lock, 12-walking motor, 13-motor support, 14-rubber ring, 81-dust collection box, 82-pump shell, 83-dust collection motor, 84-propeller, 85-filter cover, 86-connecting block, 87-air outlet, 88-buckle, 89-buckle ring, 810-dust collection port and 811-air hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, in an embodiment of the present invention, a nitrogen pipeline cleaning device includes: the dust collector comprises a fixed ring 1, a brush ring 2, a fixed groove 3, a wheel carrier 4, a fixed block 5, a rubber wheel 6, a connecting frame 7, a dust collecting pump 8, a dust collecting pipe 9, a dust collecting hopper 10, a bayonet 11, a walking motor 12, a motor bracket 13, a rubber ring 14, a dust collecting box 81, a pump shell 82, a dust collecting motor 83, a propeller 84, a filter cover 85, a connecting block 86, an air outlet 87, a buckle 88, a retaining ring 89, a dust collecting port 810 and an air hole 811; the brush ring 2 is a ring structure made of sponge material or network fiber material, the inner wall and two side walls of the brush ring 2 are semi-wrapped and fixed by the fixing ring 1, the inner wall of the fixing ring 1 is provided with three fixing grooves 3 which are arranged in a circumferential manner at equal intervals, the middle part of the wheel carrier 4 is in a square rod shape, two sides of the wheel carrier 4 are respectively fixed with two rubber wheels 6 by adopting a triangular bracket, the rubber wheels 6 are fixed on the front side and the rear side of the wheel carrier 4 by utilizing a shaft lever and a bearing, a rotating pair is formed between the rubber wheels 6 and the wheel carrier 4, the middle part of the wheel carrier 4 is provided with a fixing block 5, the cross section outline of the fixing block 5 is consistent with the cross section inner outline of the fixing groove 3, the fixing block 5 is embedded in the fixing groove 3, three groups of wheel carriers 4 are arranged in the three fixing grooves 3 through the fixing blocks 5, the front side and, the dust collecting opening 810 of the dust collecting pump 8 is connected with a dust collecting bucket 10 which is narrow at the top and wide at the bottom through a dust collecting pipe 9, and the dust collecting bucket 10 is of a hollow shell structure which is through at the top and the bottom; a motor bracket 13 is fixed on one connecting frame 7 connected with the wheel frame 4 through a bolt, the upper part of the motor bracket 13 is bent below one group of rubber wheels 6 to form a horizontal structure, a walking motor 12 is fixed on the horizontal structure of the motor bracket 13 through a bolt, and the output end of the walking motor 12 is connected with the shaft lever of the rubber wheel 6 on the same side through a shaft coupling.

The dust collecting pump 8 is composed of a dust collecting box 81, a pump shell 82, a dust collecting motor 83, a propeller 84, a filter cover 85, a connecting block 86, an air outlet 87, a buckle 88, a retaining ring 89 and a dust collecting opening 810, wherein the pump shell 82 is a hollow shell structure with closed upper and lower parts, the middle part of the lower surface of the pump shell 82 is provided with a circular hole site forming air hole 811, the dust collecting motor 83 is fixed above the air hole 811 through a bracket, the output end of the dust collecting motor 83 is positioned below the air hole 811, the output end of the dust collecting motor 83 is fixed with the propeller 84 through a clamping key, the bottom of the pump shell 82 is fixed with the filter cover 85 with an upper opening through a screw, at least four groups of buckles 88 are arranged below the pump shell 82, the dust collecting box 81 is a cylindrical structure with an upper opening, the upper opening of the dust collecting box 81 is provided with a circle of concentric convex rings to form the retaining ring 89, the outer contour, the dust collecting box 81 is fixed at the lower part of the pump shell 82, the pump shell 82 is provided with a dust collecting port 810, the dust collecting port 810 is of a cylindrical structure, the lower part of the dust collecting port 810 is positioned below the pump shell 82 and is not communicated with the inside of the pump shell 82 and is communicated with the inside of the dust collecting box 81, the pump shell 82 is provided with an opening to form an air outlet 87, the pump shell 82 is fixedly connected with a connecting block 86 of a plate-shaped structure, the connecting block 86 is provided with a screw hole for connecting the connecting frame 7, and the connecting block 86 penetrates through the screw.

The filter cover 85 is formed by a filter gauze with three hundred meshes and a supporting frame, the upper part and the lower part of the supporting frame are circular rings, the upper circular ring and the lower circular ring are connected by adopting a vertical rod, so that the supporting frame is in a frame structure with an upper opening and a lower opening, and the filter gauze is covered on the side wall and the bottom surface of the supporting frame, so that the filter cover 85 is in a cylindrical structure with an upper opening as a whole.

The fixed part of fixed slot 3 and fixed block 5 is equipped with a round hole jointly, and a bayonet lock 11 has run through in the round hole, and the one end of bayonet lock 11 is equipped with spacing post, and the other end of bayonet lock 11 is equipped with a rubber ring 14, and the diameter of rubber ring 14 slightly is greater than the diameter of round hole, and the diameter of bayonet lock 11 slightly is less than the diameter of round hole.

The lower part of the dust hopper 10 is arc-shaped.

The dust suction pipe 9 adopts a universal bamboo joint air pipe.

The distance from the edge of the brush ring 2 to the circle center thereof is larger than the distance from the rubber wheel 6 to the circle center of the brush ring 2, and the distance from the rubber wheel 6 to the circle center of the brush ring 2 is equal to the inner diameter of the nitrogen pipeline to be cleaned.

When in use, the device is integrally arranged in a nitrogen pipeline, strong wind is added at one side of the pipeline to carry out traditional air-blowing type cleaning operation (the purpose of the application is to clean dust which is difficult to clean by air-blowing type dust cleaning, so the air-blowing type dust cleaning and the dust cleaning can be simultaneously carried out), all the rubber wheels 6 are tightly attached to the inner wall of the nitrogen pipeline to play a role of supporting the whole device, then the walking motor 12 and the dust collecting motor 83 are connected with a power supply, the walking motor 12 and the dust collecting motor 83 are started to control the walking motor 12 and the dust collecting motor 83 to rotate, the rubber wheels 6 connected with the walking motor 12 are driven to rotate when the walking motor 12 rotates, and then the whole device is driven to move in the nitrogen pipeline, because the distance from the edge of the brush ring 2 to the center of the circle is greater than the distance from the rubber wheels 6 to the center of the brush ring 2, the distance from the rubber wheels 6 to the center of the brush, the outer wall of the brush ring 2 can be tightly attached to the inner wall of the nitrogen pipeline to ensure the dust brushing force, so that when the brush ring 2 brushes the dust on the inner wall of the nitrogen pipeline, the brush ring 2 brushes the dust on the inner wall of the nitrogen pipeline to fall to the bottom of the inner wall of the pipeline, when the dust collection motor 83 rotates, the dust collection motor 83 drives the propeller 84 to move, the propeller 84 generates a suction force from bottom to top, because the lower part of the dust collection port 810 is positioned below the pump shell 82, the dust collection port 810 is not communicated with the inside of the pump shell 82 and is communicated with the inside of the dust collection box 81, according to the aerodynamics and pressure principle, a negative pressure can be generated in the dust collection box 81 under the action of the suction force, a suction force is generated at the dust collection port 810 under the action of the negative pressure, so that the dust collection port 810 can also generate a suction force through the dust collection hopper 10 connected with the dust collection pipe 9, the dust brushed by the brush ring 2 is extracted dust, collected dust is filtered by the filter cover 85, falls into the dust collection box 81 and is collected by the dust collection box 81, the dust collection pipe 9 adopts a universal bamboo joint air pipe with a freely adjustable angle, so that the position of the dust collection hopper 10 can be adjusted, and the lower part of the dust collection hopper 10 is arc-shaped, so that the dust collection hopper 10 can be adjusted to be closer to the inner wall of the pipeline, because of the gravity effect of the dust collection pump 8, the dust collection hopper 10 can be always positioned at the lower part, the inner wall of the pipeline is brushed for a plurality of times, the inner wall of the pipeline is brushed cleanly, the pipeline can also absorb dust raised in the dust cleaning process, the fixed ring 1 and the brush ring 2 can be replaced according to the size of the inner diameter of the pipeline, when in replacement, all the clamping pins 11 are drawn out, the original fixed ring 1 and the brush ring 2 are taken down, the fixed ring 1 and the brush ring 2 which need to be replaced are replaced, because one end of the clamping pins 11 is provided with a limiting column, the, the diameter of the rubber ring 14 is slightly larger than that of the round hole on the fixing groove 3, and the diameter of the bayonet lock 11 is slightly smaller than that of the round hole on the fixing groove 3. So in the round hole in bayonet lock 11 insertion fixed slot 3, because rubber ring 14 can take place elastic deformation and be convenient for bayonet lock 11 to insert, bayonet lock 11 inserts fixed slot 3, behind fixed block 5, rubber ring 14 recovers, because the diameter of rubber ring 14 slightly is greater than the diameter of round hole, so, can avoid bayonet lock 11 to deviate from in the round hole, and then prevent that fixed block 5 from deviating from in fixed slot 3 (the control mode of walking motor 12 and dust absorption motor 83 can be for the wired control of sufficient long wire connection power, also can be from taking power and controller to wireless control, the embodiment of this application all can be regarded as to two kinds of control mode, and the control mode and the control principle of walking motor 12 and dust absorption motor 83 do not regard as the protection scope of this application, the solid omission).

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A nitrogen line cleaning apparatus comprising: the dust collector comprises a fixed ring (1), a brush ring (2), a fixed groove (3), a wheel carrier (4), a fixed block (5), a rubber wheel (6), a connecting frame (7), a dust collection pump (8), a dust collection pipe (9), a dust collection hopper (10), a bayonet lock (11), a walking motor (12), a motor support (13), a rubber ring (14), an ash collection box (81), a pump shell (82), a dust collection motor (83), a propeller (84), a filter cover (85), a connecting block (86), an air outlet (87), a buckle (88), a retaining ring (89), a dust collection port (810) and an air hole (811); the method is characterized in that: the brush ring (2) is a ring structure made of sponge materials or network fiber materials, the inner wall and two side walls of the brush ring (2) are wrapped and fixed by the fixing ring (1), three fixing grooves (3) which are arranged at equal intervals in a circumferential manner are formed in the inner wall of the fixing ring (1), the middle of the wheel carrier (4) is in a square rod shape, two rubber wheels (6) are respectively fixed on two sides of the wheel carrier (4) by adopting triangular supports, the rubber wheels (6) are fixed on the front side and the rear side of the wheel carrier (4) by utilizing shaft rods and bearings, a rotating pair is formed between the rubber wheels (6) and the wheel carrier (4), a fixing block (5) is arranged in the middle of the wheel carrier (4), the cross section outline of the fixing block (5) is consistent with the cross section inner outline of the fixing groove (3), the fixing block (5) is embedded in the fixing groove (3), three wheel carriers (4) are installed in the three fixing, the front side and the rear side of one wheel carrier (4) are respectively fixed with a connecting frame (7) by bolts, a dust collecting pump (8) is clamped and connected below the two connecting frames (7), a dust collecting opening (810) of the dust collecting pump (8) is connected with a dust suction hopper (10) which is narrow at the top and wide at the bottom through a dust suction pipe (9), and the dust suction hopper (10) is of a hollow shell structure which is through at the top and the bottom; a motor support (13) is fixed on one connecting frame (7) connected with the wheel frame (4) through bolts, the upper portion of the motor support (13) is bent below one group of rubber wheels (6) to form a horizontal structure, a walking motor (12) is fixed on the horizontal structure of the motor support (13) through bolts, and the output end of the walking motor (12) is connected with the shaft rod of the rubber wheels (6) on the same side through a coupler.

2. A nitrogen line cleaning apparatus as claimed in claim 1, wherein: the dust collection pump (8) is composed of an ash collection box (81), a pump shell (82), a dust collection motor (83), a propeller (84), a filter cover (85), a connecting block (86), an air outlet (87), a buckle (88), a retaining ring (89) and a dust collection port (810), wherein the pump shell (82) is of a hollow shell structure which is closed up and down, a circular hole site is arranged in the middle of the lower surface of the pump shell (82) to form an air hole (811), the dust collection motor (83) is fixed above the air hole (811) through a support, the output end of the dust collection motor (83) is positioned below the air hole (811), the propeller (84) is fixed at the output end of the dust collection motor (83) through a clamping key, the upper opening filter cover (85) is fixed at the bottom of the pump shell (82) through a screw, at least four groups of buckles (88) are arranged below the pump shell (82), and the ash collection box (81), the dust collecting box is characterized in that a circle of concentric convex rings are arranged at an upper opening of the dust collecting box (81) to form a retaining ring (89), the outer contour of the retaining ring (89) is consistent with the surface contour of the pump shell (82), the retaining ring (89) is fastened at the lower part of the pump shell (82) by a buckle (88) to enable the dust collecting box (81) to be fixed at the lower part of the pump shell (82), a dust collecting opening (810) is arranged on the pump shell (82), the dust collecting opening (810) is of a cylindrical structure, the lower part of the dust collecting opening (810) is located below the pump shell (82) and is not communicated with the interior of the pump shell (82) and is communicated with the interior of the dust collecting box (81), an opening is formed in the pump shell (82) to form an air outlet (87), a connecting block (86) of a plate-shaped structure is fixedly connected to the pump shell (82), a screw hole for connecting.

3. A nitrogen line cleaning apparatus as claimed in claim 2, wherein: the filter cover (85) is formed by a filter gauze with three hundred meshes and a support frame, the upper part and the lower part of the support frame are circular ring structures, the upper circular ring and the lower circular ring are connected by adopting a vertical rod, so that the support frame is in a frame structure with an upper opening and a lower opening, and the filter gauze is covered on the side wall and the bottom surface of the support frame, so that the filter cover (85) is integrally in a cylindrical structure with an upper opening.

4. A nitrogen line cleaning apparatus as claimed in claim 1, wherein: the fixing groove (3) and the fixing block (5) are fixed through a circular hole, a clamping pin (11) penetrates through the circular hole, a limiting column is arranged at one end of the clamping pin (11), a rubber ring (14) is arranged at the other end of the clamping pin (11), the diameter of the rubber ring (14) is slightly larger than that of the circular hole, and the diameter of the clamping pin (11) is slightly smaller than that of the circular hole.

5. A nitrogen line cleaning apparatus as claimed in claim 1, wherein: the lower part of the dust suction hopper (10) is arc-shaped.

6. A nitrogen line cleaning apparatus as claimed in claim 1, wherein: the dust collection pipe (9) adopts a universal bamboo joint air pipe.

7. A nitrogen line cleaning apparatus as claimed in claim 1, wherein: the distance from the edge of the brush ring (2) to the circle center of the brush ring is larger than the distance from the rubber wheel (6) to the circle center of the brush ring (2), and the distance from the rubber wheel (6) to the circle center of the brush ring (2) is equal to the inner diameter of the cleaned nitrogen pipeline.