CN219817345U - Dredging device - Google Patents

Abstract

The utility model provides a dredging device, which comprises: the storage part is provided with an air supply outlet, and the air supply outlet is communicated with the air inlet so that the air in the storage part flows out from the air outlet after passing through the air supply outlet and the air inlet in sequence; one end of the connecting pipe group is connected with the air outlet, and the other end of the connecting pipe group is communicated with a pipeline to be dredged; the detection part of the first pressure detection piece and the detection part of the second pressure detection piece extend into the connecting pipe group, the detection part of the first pressure detection piece is arranged at one end of the connecting pipe group, and the detection part of the second pressure detection piece is arranged at the other end of the connecting pipe group. By the technical scheme provided by the utility model, the technical problem that a concrete pump pipe is easy to block in the prior art can be solved.

Description

Dredging device

Technical Field

The utility model relates to the technical field of pipeline dredging, in particular to a dredging device.

Background

At present, in the building pouring construction process of various underground chamber concrete walls and equipment foundations of mines, vehicles are difficult to reach the vicinity of a construction point due to the underground special limited environment, and therefore a concrete conveying pump is required to be matched with a conveying pump pipe to convey concrete to a preset place. The conveying pump pipe is formed by connecting multiple sections of steel pipes successively through buckles.

However, in various reasons such as equipment malfunction, improper operation or concrete quality, a situation in which the pump pipe is clogged inevitably occurs, which may cause the concrete pouring to be not performed normally. If the dredging device is not in place timely, concrete in the pump pipe can be solidified, the inside of the pump pipe is easy to be blocked, and the pump pipe can be scrapped when serious.

Disclosure of Invention

The utility model mainly aims to provide a dredging device to solve the technical problem that a concrete pump pipe is easy to block in the prior art.

In order to achieve the above object, the present utility model provides a dredging device for dredging a pipeline to be dredged, the dredging device comprising:

the storage part is provided with an air supply outlet, and the air supply outlet is communicated with the air inlet so that the air in the storage part flows out from the air outlet after passing through the air supply outlet and the air inlet in sequence;

one end of the connecting pipe group is connected with the air outlet, and the other end of the connecting pipe group is communicated with a pipeline to be dredged;

the detection part of the first pressure detection piece and the detection part of the second pressure detection piece extend into the connecting pipe group, the detection part of the first pressure detection piece is arranged at one end of the connecting pipe group, and the detection part of the second pressure detection piece is arranged at the other end of the connecting pipe group.

Further, the pull throughs further comprise:

the control piece is connected with the first pressure detection piece and the second pressure detection piece;

the prompting piece is connected with the control piece; when the pressure value detected by the second pressure detecting piece is smaller than the pressure value detected by the first pressure detecting piece, and the pressure difference between the second pressure detecting piece and the first pressure detecting piece is larger than the preset pressure difference, the control piece controls the prompting piece to prompt.

Further, the pull throughs further comprise:

the control element can be a control panel which is arranged on the outer side wall of the storage element; and/or the number of the groups of groups,

the prompting piece can be a sound-producing structure or a light-emitting structure.

Further, the connecting tube group includes:

one end of the first connecting pipe forms one end of the connecting pipe group, and the first connecting pipe is made of metal materials;

and one end of the second connecting pipe is communicated with the other end of the second connecting pipe, the other end of the second connecting pipe forms the other end of the connecting pipe group, and the second connecting pipe is of a hose structure.

Further, the hose structure is a rubber hose or a stainless steel corrugated pipe; and/or the number of the groups of groups,

the end, close to the hose structure, of the first connecting pipe is provided with a first flange joint, and the end, close to the first connecting pipe, of the hose structure is provided with a second flange joint matched with the first flange joint; one end of the hose structure, which is far away from the first connecting pipe, is provided with a third flange joint which is used for being connected with a pipeline to be dredged.

Further, the first connecting pipe comprises a communicating section and a gradual change section which are connected with each other, and the communicating section is positioned at one side of the gradual change section far away from the second connecting pipe; along the extending direction from the first connecting pipe to the second connecting pipe, the flow section of the gradual change section is gradually increased.

Further, the pull throughs further comprise:

the third pressure detection piece is arranged on the storage piece, the detection part of the third pressure detection piece stretches into the air supply outlet, and the third pressure detection piece is used for detecting the fluid pressure of the air supply outlet.

Further, the pull throughs further comprise:

one end of the air supply pipeline is communicated with the air supply outlet, and the other end of the air supply pipeline is communicated with the air inlet;

the pressure reducing valve is arranged on the air supply pipeline and is close to the air supply outlet.

Further, the pull throughs further comprise:

the installation base is provided with an air cannon;

the locating sleeve is arranged on the mounting base, the locating sleeve and the air cannon are arranged at intervals, the locating sleeve is provided with a locating hole matched with the storage piece, and the storage piece is mounted in the locating hole.

Further, the pull throughs further comprise:

the roller assembly is rotatably arranged below the mounting base;

the locking assembly is arranged on the mounting base, and the locking end of the locking assembly is used for being connected with or separated from a foundation to be locked, so that the locking assembly is respectively located at a locking position or an avoiding position.

By adopting the technical scheme, the air cannon and the storage piece are arranged, so that the air outlet of the air cannon is connected with the pipeline to be dredged through the connecting pipe group, and gas can be provided for the air cannon through the storage piece so as to impact and dredge the pipeline to be dredged through the air cannon, thereby solving the technical problem that a concrete pump pipe is easy to block in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic view of the overall structure of a pull through provided in accordance with an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. an air cannon; 11. an air inlet; 12. an air outlet;

20. a storage member; 21. a gas supply outlet;

30. connecting the tube group; 31. a first connection pipe; 311. a communication section; 312. a gradual change section; 32. a second connection pipe;

40. an air supply line; 50. a pressure reducing valve; 60. a mounting base; 70. a positioning sleeve; 80. a roller assembly; 90. a locking assembly;

101. a first pressure detecting member; 102. and a second pressure detecting member.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1, in an embodiment of the present utility model, a dredging apparatus is provided for dredging a pipeline to be dredged, and the dredging apparatus includes an air cannon 10, a storage member 20, a connection pipe group 30, and a first pressure detecting member 101 and a second pressure detecting member 102. The air cannon 10 has an air inlet 11 and an air outlet 12 arranged at intervals, the storage member 20 has an air supply outlet 21, and the air supply outlet 21 communicates with the air inlet 11 so that the air in the storage member 20 flows out from the air outlet 12 after passing through the air supply outlet 21 and the air inlet 11 in order. One end of the connecting tube group 30 is connected with the air outlet 12, and the other end of the connecting tube group 30 is communicated with a pipeline to be dredged. The detection portion of the first pressure detecting member 101 and the detection portion of the second pressure detecting member 102 both extend into the connection tube group 30, the detection portion of the first pressure detecting member 101 is provided at one end of the connection tube group 30, and the detection portion of the second pressure detecting member 102 is provided at the other end of the connection tube group 30.

By adopting such arrangement, through setting up the storage piece 20 in order to supply gas to the air cannon 10, the end of the air cannon 10 is communicated with the pipeline to be dredged through the connecting pipe group 30, can change gas into air jet through the air cannon and dredge the concrete in the pipeline, can effectively solve the technical problem that the concrete pipeline is easy to block in the prior art. In addition, setting up first pressure detection spare 101 and second pressure detection spare 102 also can detect the atmospheric pressure at connecting tube nest 30 both ends, and then can realize treating whether still having the jam in the dredging pipe through first pressure detection spare 101 and second pressure detection spare 102 and judge, can further promote the mediation effect of pull throughs, convenience of customers operation.

Wherein the first pressure detecting member 101 is provided at an end of the connecting tube group 30 remote from the air cannon 10, and the second pressure detecting member 102 is provided at an end of the connecting tube group 30 near the air cannon 10.

In this embodiment, the pull through further comprises a control member and a reminder member. The first pressure detecting member 101 and the second pressure detecting member 102 are both connected with the control member, and the prompting member is connected with the control member. When the pressure value detected by the second pressure detecting member 102 is smaller than the pressure value detected by the first pressure detecting member 101, and the pressure difference between the second pressure detecting member 102 and the first pressure detecting member 101 is larger than the preset pressure difference, the control member controls the prompting member to prompt. By adopting the arrangement, the air pressure information detected by the first pressure detecting piece 101 and the second pressure detecting piece 102 can be judged through the control piece, the result of whether blockage still exists in the pipeline to be dredged or not is obtained, and a prompt is sent to an operator through the control prompt piece, so that the blockage situation and the dredging situation in the pipeline can be more conveniently known.

In particular, the control member may be a control panel disposed on an outer sidewall of the storage member 20. Alternatively, the cue element may be a sound-emitting structure or a light-emitting structure. Still alternatively, the sound emitting structure or the light emitting structure may be provided while the control panel is provided. By adopting the arrangement, operators can obtain condition information of the inside of the pipeline to be dredged more conveniently, so that next dredging operation can be performed more rapidly, and the use efficiency of the dredging device can be improved.

In the present embodiment, the connection tube group 30 includes a first connection tube 31 and a second connection tube 32. One end of the first connection pipe 31 forms one end of the connection pipe group 30, and the first connection pipe 31 is made of a metal material. One end of the second connection pipe 32 communicates with the other end of the second connection pipe 32, the other end of the second connection pipe 32 forms the other end of the connection pipe group 30, and the second connection pipe 32 is of a hose structure. With the arrangement, as the first connecting pipe 31 is required to be directly connected with the air outlet of the air cannon, high compressive strength is required, and the metal structure can ensure that the first connecting pipe 31 is not damaged by atmospheric pressure as much as possible, so that the use stability of the dredging device can be improved; meanwhile, the second connecting pipe 32 made of soft materials can be more convenient to connect with the pipeline to be dredged, and the efficiency of the dredging device in use can be improved.

In particular, the hose structure may be a rubber hose or a stainless steel bellows. This can increase the service life of the hose structure as much as possible.

Alternatively, the end of the first connecting tube 31 close to the hose structure may be provided with a first flange joint, and the end of the hose structure close to the first connecting tube 31 may be provided with a second flange joint adapted to the first flange joint. The end of the hose construction remote from the first connecting tube 31 is provided with a third flange joint for connection with a pipe to be dredged. By adopting such a setting, the first connecting pipe 31 can be conveniently connected with the hose structure in a mounting manner, and the hose structure can be conveniently connected with a pipeline to be dredged.

Still alternatively, the first flange joint, the second flange joint, and the third flange joint may be provided while the hose structure is made of a rubber hose or a stainless steel bellows. By adopting the arrangement, the connection convenience of the structure of the connecting pipe group 30 and the connection convenience of the connecting pipe group 30 and the pipeline to be dredged can be further improved, and the efficiency of the dredging device when the pipeline to be dredged is connected can be further improved; and adopt flange joint's mode, also can strengthen the leakproofness of connection structure department to a certain extent, thereby can reduce gas leakage and make the air current that reaches the jam position have sufficient impact force, can further promote dredging device's dredging effect.

In the present embodiment, the first connection pipe 31 includes a communication section 311 and a transition section 312 connected to each other, the communication section 311 being located at a side of the transition section 312 remote from the second connection pipe 32. The flow cross section of the transition section 312 gradually increases along the extending direction of the first connection pipe 31 to the second connection pipe 32. With such arrangement, the flow rate of the gas entering the second connecting pipe 32 can be increased by the change of the flow section of the transition section 312, so that the flow rate of the gas entering the connecting pipe group 30 and the pipeline to be dredged can be increased, and the sufficient impact force can be ensured to be provided in the pipeline to be dredged so as to break up the blocked concrete, and the dredging effect of the dredging device can be further improved.

Specifically, the pull through also includes a third pressure sensing member. The third pressure detecting member is provided on the storage member 20, and a detecting portion of the third pressure detecting member extends into the air supply outlet 21, and the third pressure detecting member is for detecting the fluid pressure of the air supply outlet 21. By adopting the arrangement, an operator can conveniently observe the gas allowance in the storage part 20 and timely replace the storage part 20 when the gas allowance in the storage part is small, and the working stability of the dredging device can be further improved.

In this embodiment, the pull through also includes an air supply line 40 and a pressure relief valve 50. One end of the air supply line 40 communicates with the air supply outlet 21, and the other end of the air supply line 40 communicates with the air inlet 11. A pressure reducing valve 50 is provided on the air supply line 40, the pressure reducing valve 50 being provided near the air supply outlet 21. With such arrangement, the air supply pipeline 40 can facilitate the storage part 20 to supply air to the air cannon 10, and since the air in the storage part 20 is usually high-pressure air, the pressure reducing valve 50 can avoid damage to the air supply pipeline 40 and the air cannon 10 due to excessive air pressure, and the safety of the dredging device in use can be improved.

Specifically, the pull through also includes a mounting base 60 and a locating sleeve 70. The air cannon 10 is disposed on the mounting base 60 and the locating sleeve 70 is disposed on the mounting base 60. The locating sleeve 70 is arranged at intervals with the air cannon 10, the locating sleeve 70 is provided with a locating hole matched with the storage piece 20, and the storage piece 20 is arranged in the locating hole. Wherein the storage member 20 is detachably connected to the positioning sleeve 70. With such arrangement, the installation base 60 can provide an installation space for the air cannon and other structures, the positioning sleeve 70 can provide an installation space for the storage piece 20, and the storage piece 20 and the positioning sleeve 70 can be taken out and replaced when the gas allowance in the storage piece 20 is insufficient due to the detachable fixing mode, so that the stability of the dredging device in use can be further enhanced.

In this embodiment, the pull through further includes a roller assembly 80 and a locking assembly 90. The roller assembly 80 is rotatably disposed below the mounting base 60. The locking assembly 90 is mounted on the mounting base 60, and the locking end of the locking assembly 90 is used for being connected with or separated from a foundation to be locked, so that the locking assembly 90 is respectively located at a locking position or an avoiding position. Wherein, when the locking assembly 90 is in the locking position, the locking assembly 90 will hug the roller assembly 80 to block the movement of the roller assembly 80; when the locking assembly 90 is in the retracted position, the locking assembly 90 is not in contact with the roller assembly 80 to retract the movement of the roller assembly 80. By adopting the arrangement, the roller assembly 80 can be locked tightly through the locking assembly 90 when the dredging device is transferred in place, so that the risk that the pipeline is broken or the dredging device is toppled over due to the movement of the roller assembly 80 during the operation of the dredging device is avoided, and the stability of the dredging device during the use can be further improved.

In this embodiment, the dredging device includes a nitrogen bottle (corresponding to the storage part 20), a pressure reducing valve 50, a high pressure hose (corresponding to the air supply pipeline 40), an air cannon 10, a reducing pipe (corresponding to the first connecting pipe 31), a concrete pump hose (corresponding to the second connecting pipe 32), and a skid-mounted trolley. The skid-mounted trolley comprises a mounting base 60, a locking assembly 90, universal wheels (corresponding to the roller assemblies 80) and a positioning sleeve 70 on the mounting base 60. The nitrogen cylinder is a common 40L high-pressure cylinder and is provided with a gas valve. The pressure reducing valve 50 is a gas cylinder pressure reducing valve special for a nitrogen cylinder. The high-pressure hose is a rubber hose or a stainless steel corrugated pipe with the withstand voltage of 3 MPa. The air cannon 10 has a volume of 100L, and is provided with an electromagnetic exhaust valve and an air inlet manual valve. The working principle of the air cannon 10 is that the working medium is air by utilizing the aerodynamic principle, a differential pressure device and a quick exhaust valve capable of realizing automatic control are adopted to instantly convert air pressure energy into air jet power energy so as to dredge a blocking position, and the air cannon 10 can generate strong impact force. The reducing pipe and the concrete pump hose are selected from pipe fittings with the pressure resistance grade of 2.5MPa and matched with the size of the exhaust pipe of the air cannon 10 and the size of the pipeline to be dredged, the two ends of the reducing pipe are selected from flange joints, one end of the concrete pump hose is a second flange joint and is used for connecting a first flange joint of the reducing pipe, and the other end of the concrete pump hose is a concrete pump pipe joint (corresponding to a third flange joint) and is used for connecting a concrete pump pipe.

Specifically, one end of the pressure reducing valve 50 is connected with the opening of the nitrogen cylinder through threads, the other end of the pressure reducing valve is connected with the high-pressure hose through threads, the high-pressure hose is connected to the air inlet 11 of the air cannon 10 through threads, the air outlet 12 of the air cannon 10 is connected with a reducing pipe through a flange and a fastener, and the reducing pipe is connected with a concrete pump hose through the flange and the fastener, so that a path for gas circulation is formed.

In this embodiment, the body of the skid-mounted trolley is made of a steel structure, the skid-mounted trolley comprises a mounting base 60, the mounting base 60 plays a role in fixing and moving the whole equipment, and a steel cylinder ring (corresponding to the positioning sleeve 70) is fixed on the mounting base 60. The nitrogen bottle is placed in the steel bottle circle on the sled dress dolly, and the air cannon 10 uses welding or fixes on sled dress dolly installation base 60 with the mode of bolt fastening, and 4 sets of universal wheels that take locking component 90 are installed to sled dress dolly below. The universal wheel is used for the removal of pull throughs during the construction, and locking assembly 90 is used for the fixed pull throughs' of pull throughs in the position of during operation. The skid-mounted trolley is also provided with an armrest, and the armrest is used for an operator to push the skid-mounted trolley to change the position of the dredging device.

Specifically, when the dredging device provided by the embodiment is used for dredging operation, firstly, the concrete pump hose is connected with a pipeline to be dredged through a buckle, the locking assembly 90 on the universal wheel is closed, the gas valve of the nitrogen gas cylinder and the gas inlet manual valve of the air cannon 10 are opened, and the air cannon 10 can be automatically filled with nitrogen. Then the electromagnetic exhaust valve of the air cannon 10 is opened, and the high-pressure nitrogen in the air cannon 10 can be instantaneously released and impact the concrete blocked in the pipeline to be dredged at a high speed. After the air cannon 10 is exhausted, the electromagnetic exhaust valve of the air cannon 10 is automatically closed, and the air cannon 10 is automatically filled with nitrogen again. If the blockage still exists, the electromagnetic exhaust valve of the air cannon 10 is opened again, and the high-pressure nitrogen continues to dredge the blocked concrete in the pipeline at a high speed. And finally, repeating the operation for a plurality of times until the blocked pipeline to be dredged is thoroughly flushed.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: through setting up the air cannon 10 and for the storage piece 20 of air cannon 10 supply gas, connect the nest of tubes 30 and make the other end connection of connecting nest of tubes 30 wait to dredge the pipeline on the gas outlet 12 of air cannon 10, can impact the mediation to the jam concrete in the pipeline of taking dredging through the air cannon 10, can effectively solve the easy technical problem who blocks up of concrete pipeline among the prior art. Meanwhile, the dredging device adopting the combination of the storage piece 20 and the air cannon 10 can also reduce the blocking processing time of the concrete pump pipe, improve the construction efficiency, reduce the equipment damage rate and improve the concrete pump conveying efficiency, and can solve the problem that the concrete pipe is blocked easily and the problem that the construction period and the engineering quality are influenced due to the blocking of the concrete pump pipe.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a pull throughs, its characterized in that, pull throughs are used for treating the pipeline of dredging, pull throughs include:

the air cannon comprises an air cannon (10) and a storage piece (20), wherein the air cannon (10) is provided with an air inlet (11) and an air outlet (12) which are arranged at intervals, the storage piece (20) is provided with an air supply outlet (21), and the air supply outlet (21) is communicated with the air inlet (11) so that air in the storage piece (20) flows out of the air outlet (12) after sequentially passing through the air supply outlet (21) and the air inlet (11);

the connecting pipe group (30), one end of the connecting pipe group (30) is connected with the air outlet (12), and the other end of the connecting pipe group (30) is communicated with the pipeline to be dredged;

the device comprises a first pressure detection piece (101) and a second pressure detection piece (102), wherein the detection part of the first pressure detection piece (101) and the detection part of the second pressure detection piece (102) are both extended into the connecting pipe group (30), the detection part of the first pressure detection piece (101) is arranged at one end of the connecting pipe group (30), and the detection part of the second pressure detection piece (102) is arranged at the other end of the connecting pipe group (30).

2. The pull through of claim 1, further comprising:

a control member, to which the first pressure detecting member (101) and the second pressure detecting member (102) are connected;

the prompting piece is connected with the control piece; when the pressure value detected by the second pressure detecting piece (102) is smaller than the pressure value detected by the first pressure detecting piece (101), and the pressure difference between the second pressure detecting piece (102) and the first pressure detecting piece (101) is larger than a preset pressure difference, the control piece controls the prompting piece to prompt.

3. A pull through according to claim 2, wherein,

the control element may be a control panel provided on an outer side wall of the storage element (20); and/or the number of the groups of groups,

the prompting piece can be a sound-producing structure or a light-emitting structure.

4. The pull through of claim 1 wherein the connecting tube set (30) comprises:

a first connection pipe (31), one end of the first connection pipe (31) forming one end of the connection pipe group (30), the first connection pipe (31) being made of a metallic material;

and one end of the second connecting pipe (32) is communicated with the other end of the second connecting pipe (32), the other end of the second connecting pipe (32) forms the other end of the connecting pipe group (30), and the second connecting pipe (32) is of a hose structure.

5. A pull through according to claim 4, wherein,

the hose structure is a rubber hose or a stainless steel corrugated pipe; and/or the number of the groups of groups,

a first flange joint is arranged at one end, close to the hose structure, of the first connecting pipe (31), and a second flange joint matched with the first flange joint is arranged at one end, close to the first connecting pipe (31), of the hose structure; one end of the hose structure, which is far away from the first connecting pipe (31), is provided with a third flange joint used for being connected with the pipeline to be dredged.

6. The pull through of claim 4 wherein the first connecting tube (31) comprises a communicating section (311) and a transition section (312) connected to each other, the communicating section (311) being located on a side of the transition section (312) remote from the second connecting tube (32); the flow cross section of the transition section (312) gradually increases along the extending direction of the first connecting pipe (31) to the second connecting pipe (32).

7. The pull through of claim 1, further comprising:

and the third pressure detection piece is arranged on the storage piece (20), a detection part of the third pressure detection piece extends into the air supply outlet (21), and the third pressure detection piece is used for detecting the fluid pressure of the air supply outlet (21).

8. The pull through of claim 1, further comprising:

an air supply pipeline (40), wherein one end of the air supply pipeline (40) is communicated with the air supply outlet (21), and the other end of the air supply pipeline (40) is communicated with the air inlet (11);

and a pressure reducing valve (50) arranged on the air supply pipeline (40), wherein the pressure reducing valve (50) is arranged close to the air supply outlet (21).

9. The pull through of claim 1, further comprising:

a mounting base (60), the air cannon (10) being disposed on the mounting base (60);

the locating sleeve (70) is arranged on the mounting base (60), the locating sleeve (70) and the air cannon (10) are arranged at intervals, the locating sleeve (70) is provided with a locating hole matched with the storage piece (20), and the storage piece (20) is arranged in the locating hole.

10. The pull through of claim 9, wherein the pull through further comprises:

a roller assembly (80) rotatably disposed below the mounting base (60);

the locking assembly (90), the locking assembly (90) is installed on the installation base (60), the locking end of the locking assembly (90) is used for being connected with or separated from a foundation to be locked, so that the locking assembly (90) is located at a locking position or an avoiding position respectively.