CN216064677U

CN216064677U - Shield type inner pipe negative pressure cleaning device

Info

Publication number: CN216064677U
Application number: CN202121823279.5U
Authority: CN
Inventors: 荣红青; 徐永涛; 王三英; 齐丹丹
Original assignee: Beijing Tichuan International Energy Service Co ltd
Current assignee: Beijing Tichuan International Energy Service Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-03-18
Anticipated expiration: 2031-08-05

Abstract

The application provides a shield formula inner tube negative pressure belt cleaning device belongs to pipeline cleaning technical field. The shield type inner pipe negative pressure cleaning device comprises a moving assembly, a moving negative pressure assembly and a cleaning assembly. The telescopic link is connected the top of removing the base, electric putter connects one side of telescopic link, electric putter's output with sliding connection between the telescopic link, the backup pad is connected the top of telescopic link, the fixed plate is connected the top one end of backup pad. The one end of threaded rod with the mounting panel rotates to be connected, the thread bush screw thread cup joints on the threaded rod, the adapter sleeve is connected the below of thread bush is favorable to the jam in the pipeline to dredge, is favorable to carrying out effectual cleanness to the inner wall of pipeline, is convenient for clear away impurity from the pipeline in, has avoided taking place once more to block up, is favorable to clearing up the different position of pipeline inside.

Description

Shield type inner pipe negative pressure cleaning device

Technical Field

The application relates to the field of pipeline cleaning, in particular to a shield type inner pipe negative pressure cleaning device.

Background

Pipeline cleaning means to wash inside the pipeline, resumes material surface itself in making the pipeline, because the special property of transported substance material leads to the petrochemical industry pipeline often to need the clearance, otherwise, these remain dregs or oil stain and rust stain and cause former pipe diameter to diminish, can influence the delivery capacity of pipeline, can cause the jam of pipeline even.

In general, people adopt a manual high-pressure water washing mode to clean the interior of a pipeline, but the cleaning effect is poor, when the pipeline is blocked, the pipeline is inconvenient to dredge, the inner wall of the pipeline cannot be effectively cleaned, impurities cleaned on the pipeline cannot be removed from the pipeline, and different parts in the pipeline cannot be cleaned conveniently.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, this application provides a shield formula inner tube negative pressure belt cleaning device, when aiming at improving and taking place to block up in the pipeline, be not convenient for dredge, can not carry out effectual cleanness to the inner wall of pipeline, can not clear away the impurity under the clearance on the pipeline in following the pipeline, be not convenient for carry out the problem of clearing up the inside different positions of pipeline.

The embodiment of the application provides a shield type inner tube negative pressure cleaning device includes removal subassembly, removal negative pressure subassembly and clearance subassembly.

The movable assembly comprises a movable base, a telescopic rod, an electric push rod, a supporting plate and a fixed plate, wherein the telescopic rod is connected above the movable base, the electric push rod is connected to one side of the telescopic rod, the output end of the electric push rod is connected with the telescopic rod in a sliding mode, the supporting plate is connected to the top end of the telescopic rod, and the fixed plate is connected to one end of the top of the supporting plate.

Remove negative pressure component and include mounting panel, first motor, threaded rod, thread bush, adapter sleeve, screw rod, air exhauster, collecting box and connecting pipe, the mounting panel is fixed the top of fixed plate, first motor is fixed the below of mounting panel, the one end of threaded rod with the output of first motor is connected, the one end of threaded rod with the mounting panel rotates to be connected, the thread bush screw thread cup joints on the threaded rod, the adapter sleeve is connected the below of thread bush, the screw rod with threaded connection between the adapter sleeve, the air exhauster with the collecting box is fixed in the backup pad, the output of air exhauster with the collecting box intercommunication, the connecting pipe with the input of air exhauster is connected.

The clearance subassembly is including fixed cover, removal setting element, fixed cover, second motor, axostylus axostyle, connecting cylinder, buffering cleaning member and conical head, fixed cover is connected the one end of screw rod, it connects to remove the setting element the both sides of fixed cover, fixed cover with the cover is decided and is connected, the second motor sets up in the fixed cover, the one end of axostylus axostyle with the output of second motor is connected, the connecting cylinder is fixed cup joint the outside of axostylus axostyle, buffering cleaning member is connected on the connecting cylinder, the conical head is fixed the other end of axostylus axostyle.

In the above-mentioned realization process, drive the telescopic link through starting electric putter and remove, be convenient for adjust the length of telescopic link to the realization highly adjusts the backup pad, is favorable to clearing up inside the better entering into pipeline of subassembly, drives the threaded rod through starting first motor and rotates, makes the thread bush remove for the threaded rod, thereby drives the adapter sleeve and carries out the position with clearance subassembly and remove. Be favorable to clearing up in the subassembly removes the pipeline, remove the setting element through the setting and be favorable to the device to fix a position in the pipeline, be favorable to improving clear effect, can also adapt to the pipeline of different diameters simultaneously, drive axostylus axostyle and connecting cylinder through starting the second motor and rotate for the buffering cleaning member is cleared up the inner wall of pipeline, is favorable to buffering cleaning member to laminate with the pipeline inner wall better, is favorable to improving clear effect. The conical head can dredge the pipeline of jam, drive the second motor through rotating the screw rod and remove to pipeline inside, the removal of cooperation adapter sleeve, be favorable to clearing up the position of difference in the pipeline, can clear away the impurity that buffering cleaning member and conical head cleared up getting off from the pipeline through the connecting pipe through starting the air exhauster, be favorable to the jam in the pipeline to dredge, be favorable to carrying out effectual cleanness to the inner wall of pipeline, be convenient for clear away impurity from the pipeline in, the emergence once more is blockked up, be favorable to clearing up the position of pipeline inside difference.

In a specific embodiment, the mobile base comprises a base plate and mobile wheels fixed below the base plate.

In the above implementation process, the bottom plate fixes the moving wheel, and the moving wheel is convenient to move the device.

In a specific embodiment, the telescopic rod comprises a first rod body and a second rod body, the first rod body is fixed above the bottom plate, and the second rod body is connected above the first rod body in a sliding mode.

In the implementation process, the second rod body is connected with the first rod body in a sliding mode, so that the distance between the first rod body and the second rod body can be adjusted conveniently, and the length of the telescopic rod can be adjusted.

In a specific embodiment, a handrail is connected to the fixing plate, and the handrail is fixed to one side of the fixing plate.

In the implementation process, the device is convenient to push through the arrangement of the handrails, and the handrails are matched with the moving wheels, so that the flexibility of the device is improved.

In a specific embodiment, a connecting seat is connected below the threaded rod, and one end of the threaded rod is rotatably connected with the connecting seat.

In the implementation process, the connecting seat is arranged to fix one end of the threaded rod conveniently, and the threaded rod is rotatably connected with the connecting seat, so that the rotating effect between the threaded rod and the first motor is improved.

In a specific embodiment, a rotary hand wheel is fixed at one end of the screw, and an exhaust pipe is connected between the exhaust fan and the connecting pipe.

In the implementation process, the rotary hand wheel is arranged to facilitate rotation of the screw rod, and the exhaust pipe is arranged to facilitate connection of the input end of the exhaust fan and the connecting pipe.

In a particular embodiment, the connection pipe includes a three-way valve and a connection rod, the three-way valve is connected between the exhaust pipe and the connection pipe, the connection rod is connected below the mounting plate, and the connection rod is connected with the three-way valve.

In the implementation process, the connecting rod is arranged to fix the position of the three-way valve, and the three-way valve is arranged to be favorable for connecting the connecting pipe.

In a specific embodiment, the movable positioning part comprises a first spring and a roller, the first spring is connected to two sides of the fixed sleeve, and the roller is connected to one end of the first spring.

In the implementation process, the roller is favorable for positioning the device in the pipeline, the cleaning effect is favorably improved, and the first spring is favorable for the roller to contact the pipelines with different diameters.

In a specific embodiment, the fixing cover comprises a plate body and a cover shell, wherein the plate body is connected with the fixing cover, and the cover shell is connected to one side of the plate body.

In the implementation process, the plate body is favorable for fixing the cover to be connected with the screw rod, and the cover shell is favorable for protecting the second motor.

In a specific embodiment, the buffer cleaning piece comprises a fixed rod, a sliding rod, a second spring and a cleaning roller brush, wherein the fixed rod is connected to the connecting cylinder, the sliding rod is connected with the fixed rod in a sliding mode, the second spring is wound on the sliding rod, and the cleaning roller brush is connected above the sliding rod.

In the implementation process, the shaft lever and the connecting cylinder are driven to rotate through the second motor, so that the inner wall of the pipeline is cleaned through the cleaning roller brush, the fixed rod and the sliding rod are connected in a sliding mode, the second spring is arranged, the cleaning roller brush is favorably attached to the inner wall of the pipeline better, and the cleaning effect is favorably improved.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a shield-type inner tube negative pressure cleaning device provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a moving assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a mobile vacuum assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a cleaning assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a connection structure of the buffering cleaning member according to the embodiment of the present application.

In the figure: 100-a moving assembly; 110-a mobile base; 112-a backplane; 114-a moving wheel; 120-a telescopic rod; 122-a first stick; 124-a second stick body; 130-an electric push rod; 140-a support plate; 150-a fixed plate; 160-a handrail; 200-moving the negative pressure assembly; 210-a mounting plate; 220-a first motor; 230-a threaded rod; 232-connecting seat; 240-thread bush; 250-connecting sleeves; 260-screw rod; 262-rotating the handwheel; 270-an exhaust fan; 272-an exhaust pipe; 280-a collection box; 290-connecting tube; 292-a three-way valve; 294-a connecting rod; 300-a cleaning assembly; 310-a fixation sleeve; 320-moving the positioning member; 322-a first spring; 324-a roller; 330-fixed cover; 332-a plate body; 334-a casing; 340-a second motor; 350-shaft lever; 360-connecting cylinder; 370-a buffer cleaning member; 372-a fixation rod; 374 — a slide bar; 376-a second spring; 378-cleaning the roller brush; 380-conical head.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-5, the present application provides a technical solution: a shield type inner tube negative pressure cleaning device comprises a moving assembly 100, a moving negative pressure assembly 200 and a cleaning assembly 300.

Referring to fig. 1-5, the moving assembly 100 includes a moving base 110, a telescopic rod 120, an electric push rod 130, a supporting plate 140 and a fixing plate 150, the moving base 110 includes a bottom plate 112 and a moving wheel 114, and the moving wheel 114 is fixed below the bottom plate 112. The base plate 112 holds the moving wheels 114, and the moving wheels 114 are provided to facilitate the movement of the apparatus. The telescopic rod 120 is connected above the movable base 110, the telescopic rod 120 includes a first rod 122 and a second rod 124, the first rod 122 is fixed above the bottom plate 112, and the second rod 124 is slidably connected above the first rod 122. Through second body of rod 124 and first body of rod 122 sliding connection, be favorable to adjusting the distance between first body of rod 122 and the second body of rod 124 to can adjust the length of telescopic link 120. The electric push rod 130 is connected to one side of the telescopic rod 120, the output end of the electric push rod 130 is slidably connected to the telescopic rod 120, the support plate 140 is connected to the top end of the telescopic rod 120, and the fixing plate 150 is connected to one end of the upper portion of the support plate 140. The fixed plate 150 is connected with a handrail 160, and the handrail 160 is fixed at one side of the fixed plate 150. The armrest 160 facilitates pushing of the device, and the armrest 160 and the moving wheel 114 cooperate with each other to improve flexibility of the device.

Referring to fig. 1-5, the movable negative pressure assembly 200 includes a mounting plate 210, a first motor 220, a threaded rod 230, a threaded sleeve 240, a connecting sleeve 250, a threaded rod 260, a suction fan 270, a collection box 280 and a connecting pipe 290, the mounting plate 210 is fixed above the fixing plate 150, the first motor 220 is fixed below the mounting plate 210, one end of the threaded rod 230 is connected with an output end of the first motor 220, one end of the threaded rod 230 is rotatably connected with the mounting plate 210, a connecting seat 232 is connected below the threaded rod 230, and one end of the threaded rod 230 is rotatably connected with the connecting seat 232. The arrangement of the connecting seat 232 facilitates the fixation of one end of the threaded rod 230, and the threaded rod 230 is rotatably connected with the connecting seat 232, so that the rotating effect between the threaded rod 230 and the first motor 220 is improved. The threaded sleeve 240 is sleeved on the threaded rod 230 in a threaded manner, the connecting sleeve 250 is connected below the threaded sleeve 240, the threaded sleeve 260 is in threaded connection with the connecting sleeve 250, the suction fan 270 and the collection box 280 are fixed on the supporting plate 140, the output end of the suction fan 270 is communicated with the collection box 280, and the connecting pipe 290 is connected with the input end of the suction fan 270. A rotary hand wheel 262 is fixed at one end of the screw 260, and an exhaust tube 272 is connected between the exhaust fan 270 and the connecting tube 290. A rotating handwheel 262 is provided to facilitate rotation of screw 260, and an exhaust tube 272 is provided to facilitate connection of the input end of exhaust fan 270 to connection tube 290. The connection pipe 290 includes a three-way valve 292 and a connection rod 294, the three-way valve 292 is connected between the exhaust pipe 272 and the connection pipe 290, the connection rod 294 is connected below the mounting plate 210, and the connection rod 294 is connected with the three-way valve 292. The setting of the connecting rod 294 enables fixing of the position of the three-way valve 292, and the setting of the three-way valve 292 facilitates the connection of the connecting pipe 290.

Referring to fig. 1 to 5, the cleaning assembly 300 includes a fixing sleeve 310, a movable positioning member 320, a fixing cover 330, a second motor 340, a shaft 350, a connecting cylinder 360, a buffer cleaning member 370 and a conical head 380, the fixing sleeve 310 is connected to one end of the screw 260, the movable positioning member 320 is connected to both sides of the fixing sleeve 310, the movable positioning member 320 includes a first spring 322 and a roller 324, the first spring 322 is connected to both sides of the fixing sleeve 310, and the roller 324 is connected to one end of the first spring 322. The arrangement of the roller 324 is beneficial to positioning the device in a pipeline and improving the cleaning effect, and the arrangement of the first spring 322 is beneficial to the contact of the roller 324 and pipelines with different diameters. The fixed cover 330 is connected with the fixed cover 310, the second motor 340 is disposed in the fixed cover 330, the fixed cover 330 includes a plate body 332 and a cover casing 334, the plate body 332 is connected with the fixed cover 310, and the cover casing 334 is connected to one side of the plate body 332. The plate body 332 is arranged to facilitate connection of the fixing cover 330 with the screw 260, and the cover casing 334 is arranged to facilitate protection of the second motor 340. One end of the shaft rod 350 is connected with the output end of the second motor 340, the connecting cylinder 360 is fixedly sleeved outside the shaft rod 350, the buffering cleaning piece 370 is connected on the connecting cylinder 360, and the conical head 380 is fixed at the other end of the shaft rod 350. The buffer cleaning member 370 includes a fixing rod 372, a sliding rod 374, a second spring 376 and a cleaning roller brush 378, the fixing rod 372 is connected to the connecting cylinder 360, the sliding rod 374 is connected to the fixing rod 372 in a sliding manner, the second spring 376 is wound around the sliding rod 374, and the cleaning roller brush 378 is connected above the sliding rod 374. Drive axostylus axostyle 350 and the rotation of connecting cylinder 360 through second motor 340 for cleaning roller brush 378 clears up the inner wall of pipeline, through sliding connection between dead lever 372 and the slide bar 374, and set up second spring 376 and be favorable to cleaning roller brush 378 to laminate with the pipeline inner wall better, be favorable to improving clear effect.

The working principle of the shield type inner tube negative pressure cleaning device is as follows: during the use, mutually support with removal wheel 114 through handrail 160, the flexibility of device has been improved, be convenient for promote the device, drive the second body of rod 124 through starting electric putter 130 and remove, be convenient for adjust the length of telescopic link 120, thereby the realization is highly adjusted backup pad 140, be favorable to inside the better pipeline that enters into of clearance subassembly 300, drive threaded rod 230 through starting first motor 220 and rotate, make thread bush 240 remove for threaded rod 230, thereby it carries out position shift to drive adapter sleeve 250 and clearance subassembly 300. Be favorable to clearance subassembly 300 to remove to the pipeline in, be favorable to the device to fix a position in the pipeline through setting up gyro wheel 324, be favorable to improving clear effect, it is favorable to gyro wheel 324 and the pipeline of different diameters to contact to set up first spring 322, drive axostylus axostyle 350 and connecting cylinder 360 through starting second motor 340 and rotate, make cleaning roller 378 clear up the inner wall of pipeline, through sliding connection between dead lever 372 and the slide bar 374, and set up second spring 376 and be favorable to cleaning roller 378 to laminate with the pipeline inner wall better, be favorable to improving clear effect. Conical head 380 can dredge the pipeline of jam, through rotating rotatory hand wheel 262, make screw rod 260 drive second motor 340 remove to pipeline inside, the removal of cooperation adapter sleeve 250, be favorable to clearing up the position of difference in the pipeline, can clear up the impurity that cleaning roller brush 378 and conical head 380 got off through starting air exhauster 270 and clear away from the pipeline through connecting pipe 290, when taking place to block up in the pipeline, be not convenient for dredge, can not carry out effectual cleanness to the inner wall of pipeline, can not clear up the impurity under the clearance on the pipeline in the pipeline, be not convenient for carry out the problem of clearance to the different positions of pipeline inside.

It should be noted that the specific model specifications of the electric push rod 130, the first motor 220, the exhaust fan 270, and the second motor 340 need to be determined according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed description is omitted.

The power supply and the principle of the power supply of the power push rod 130, the first motor 220, the suction fan 270, and the second motor 340 will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A shield type inner tube negative pressure cleaning device is characterized by comprising

The moving assembly (100) comprises a moving base (110), a telescopic rod (120), an electric push rod (130), a supporting plate (140) and a fixing plate (150), wherein the telescopic rod (120) is connected above the moving base (110), the electric push rod (130) is connected to one side of the telescopic rod (120), the output end of the electric push rod (130) is in sliding connection with the telescopic rod (120), the supporting plate (140) is connected to the top end of the telescopic rod (120), and the fixing plate (150) is connected to one end above the supporting plate (140);

remove negative pressure subassembly (200), remove negative pressure subassembly (200) including mounting panel (210), first motor (220), threaded rod (230), thread bush (240), adapter sleeve (250), screw rod (260), air exhauster (270), collecting box (280) and connecting pipe (290), mounting panel (210) are fixed the top of fixed plate (150), first motor (220) are fixed the below of mounting panel (210), the one end of threaded rod (230) with the output of first motor (220) is connected, the one end of threaded rod (230) with mounting panel (210) rotate to be connected, thread bush (240) screw-thread cup joints on threaded rod (230), adapter sleeve (250) are connected the below of thread bush (240), screw rod (260) with threaded connection between adapter sleeve (250), air exhauster (270) with collecting box (280) are fixed on backup pad (140), the output end of the exhaust fan (270) is communicated with the collection box (280), and the connecting pipe (290) is connected with the input end of the exhaust fan (270);

a cleaning component (300), wherein the cleaning component (300) comprises a fixed sleeve (310), a movable positioning piece (320), a fixed cover (330), a second motor (340), a shaft lever (350), a connecting cylinder (360), a buffering cleaning piece (370) and a conical head (380), the fixed sleeve (310) is connected to one end of the screw rod (260), the movable positioning piece (320) is connected to two sides of the fixed sleeve (310), the fixed cover (330) is connected with the fixed sleeve (310), the second motor (340) is arranged in the fixed cover (330), one end of the shaft lever (350) is connected with the output end of the second motor (340), the connecting cylinder (360) is fixedly sleeved outside the shaft rod (350), the buffering cleaning piece (370) is connected to the connecting cylinder (360), and the conical head (380) is fixed to the other end of the shaft rod (350).

2. The shield-type inner tube negative pressure cleaning device according to claim 1, wherein the moving base (110) comprises a bottom plate (112) and a moving wheel (114), and the moving wheel (114) is fixed below the bottom plate (112).

3. The shield-type inner tube negative pressure cleaning device of claim 2, wherein the telescopic rod (120) comprises a first rod (122) and a second rod (124), the first rod (122) is fixed above the bottom plate (112), and the second rod (124) is slidably connected above the first rod (122).

4. The shield-type inner tube negative pressure cleaning device according to claim 1, wherein a handrail (160) is connected to the fixing plate (150), and the handrail (160) is fixed on one side of the fixing plate (150).

5. The shield-type inner tube negative pressure cleaning device is characterized in that a connecting seat (232) is connected below the threaded rod (230), and one end of the threaded rod (230) is rotatably connected with the connecting seat (232).

6. The shield-type inner pipe negative pressure cleaning device of claim 1, wherein a rotating hand wheel (262) is fixed at one end of the screw (260), and an exhaust pipe (272) is connected between the exhaust fan (270) and the connecting pipe (290).

7. The shield-type inner pipe negative pressure cleaning device according to claim 6, wherein the connecting pipe (290) comprises a three-way valve (292) and a connecting rod (294), the three-way valve (292) is connected between the exhaust pipe (272) and the connecting pipe (290), the connecting rod (294) is connected below the mounting plate (210), and the connecting rod (294) is connected with the three-way valve (292).

8. The shield-type inner tube negative pressure cleaning device according to claim 1, wherein the moving positioning member (320) comprises a first spring (322) and a roller (324), the first spring (322) is connected to both sides of the fixing sleeve (310), and the roller (324) is connected to one end of the first spring (322).

9. The shield-type inner tube negative pressure cleaning device as claimed in claim 1, wherein the fixing cover (330) comprises a plate body (332) and a cover shell (334), the plate body (332) is connected with the fixing cover (310), and the cover shell (334) is connected to one side of the plate body (332).

10. The shield-type inner tube negative pressure cleaning device as claimed in claim 1, wherein the buffer cleaning member (370) comprises a fixed rod (372), a sliding rod (374), a second spring (376) and a cleaning roller brush (378), the fixed rod (372) is connected to the connecting cylinder (360), the sliding rod (374) is connected with the fixed rod (372) in a sliding manner, the second spring (376) is wound on the sliding rod (374), and the cleaning roller brush (378) is connected above the sliding rod (374).