CN218787375U - Pipeline connection structure for pump truck and pump truck - Google Patents

Abstract

The utility model provides a pipeline connection structure for pump truck, including first pipeline, second pipeline and pipeline sealing member, the one end of first pipeline and the one end of second pipeline are connected, and pipeline sealing member includes the sealing member main part, and the installation through-hole has been seted up to the sealing member main part, and the department of being connected of first pipeline and second pipeline holds in the installation through-hole, and pipeline sealing member is along the department of being connected of axial and radial seal first pipeline and second pipeline. The utility model also provides a pump truck, including above-mentioned pipeline connection structure for the pump truck. The pipeline connecting structure for the pump truck and the pump truck of the utility model have the advantages that the pipeline sealing element is arranged to flexibly transfer the received pumping pressure, thereby reducing the risks of cracking and pipe explosion; the condition of leakage from the joint of the two pipelines in the pumping process is reduced; the sealing performance between pipelines is enhanced, and the positions of the pipelines are quickly positioned and installed, so that the generation of pipeline gaps and steps is prevented.

Description

Pipeline connection structure for pump truck and pump truck

Technical Field

The utility model relates to an engineering machine tool technical field, in particular to pipeline connection structure and pump truck for pump truck.

Background

The pump truck is generally a concrete pump truck, and is a machine for continuously conveying concrete along a pipeline by using pressure. The pump truck is composed of a pump body and a conveying pipe, and is divided into a piston type, an extrusion type and a water pressure diaphragm type according to the structural form, wherein the pump body is arranged on an automobile chassis, and then a telescopic or zigzag distributing rod is arranged, so that the pump truck is formed.

The concrete pipes on the pump truck are connected by sections through the arm support, and then the concrete is pumped to a required place along the pipeline by using pressure. The concrete pipe adopts a pipe clamp connection mode, the pipe clamp connection is not tight, slurry is easy to leak at the pipe clamp connection position in the concrete conveying process, and the pumping efficiency is influenced; pipe strap and concrete pipe flange rigid connection of concrete pipe connection department, the delivery pressure of pump truck will lead to concrete pipe vibrations in concrete transportation process, and concrete pipe connection department impact force is great, leads to frequent striking and wearing and tearing, can lead to concrete pipe flange deformation fracture simultaneously, has the risk of tube explosion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline connection structure and pump truck for pump truck to solve the problem that appears in the background art.

The utility model discloses a realize that the technical scheme of its purpose is like: the utility model provides a pipeline connection structure for pump truck, including first pipeline, second pipeline and pipeline sealing member, the one end of first pipeline with the one end of second pipeline is connected, pipeline sealing member includes the sealing member main part, the installation through-hole has been seted up to the sealing member main part, first pipeline with the department of being connected of second pipeline holds in the installation through-hole, pipeline sealing member is along axial and radial seal first pipeline with the department of being connected of second pipeline.

The utility model discloses an in one embodiment, sealing member main part both sides all are provided with first seal lip and second seal lip, first pipeline includes first butt joint portion, the second pipeline includes second butt joint portion, first butt joint portion with the equal cover of second butt joint portion is established in the sealing member main part and in butt joint in the mounting hole sets up respectively sealing member main part both sides form first interval groove between the first seal lip, set up and be in each side of sealing member main part form second interval groove between first seal lip and the second seal lip.

In an embodiment of the present invention, the first pipeline further includes a first flange disposed at the end of the first butt joint portion, the second pipeline further includes a second flange disposed at the end of the second butt joint portion, and the first flange and the second flange are both accommodated in the through hole and abut against each other.

In an embodiment of the present invention, the first pipeline further includes a first main pipe body, the first butt-joint portion and the first flange are coaxially connected in sequence, and an outer diameter of the first butt-joint portion is smaller than outer diameters of the first flange and the first main pipe body;

the second pipeline further comprises a second main pipe body, the second butt joint portion and the second flange are sequentially and coaxially connected, and the outer diameter of the second butt joint portion is smaller than the outer diameters of the second flange and the second main pipe body.

In an embodiment of the present invention, the first sealing lip abuts against the outer sides of the first flange and the second flange respectively; the second sealing lip is respectively abutted against the end faces of the first flange and the second flange and is simultaneously abutted against the outer surfaces of the first butt joint part and the second butt joint part.

In an embodiment of the present invention, the pipe sealing member is annular, the pipe sealing member is coaxially sleeved on the first pipe and the second pipe, two sides of the first spacing groove include ear grooves, two the ear grooves are recessed to two sides respectively along a direction parallel to the axial direction, and two side walls between the ear grooves face towards the axial direction.

In an embodiment of the present invention, a surface of the ear groove close to the first flange and the second flange forms a first included angle with the axial direction; one surface of the lug groove, which is far away from the first flange and the second flange, is parallel to the axial direction, or forms a second included angle; one surface of the second spacing groove is perpendicular to the axial direction, and a third included angle is formed between the other surface of the second spacing groove and the axial direction.

In an embodiment of the present invention, an extending direction of the first seal lip forms an included angle of 20 ° to 50 ° with an axial direction of the first pipe and the second pipe.

The utility model discloses an in an embodiment, sealing member main part both sides evenly are provided with first seal lip, set up respectively sealing member main part both sides form first interval groove between the first seal lip, first pipeline includes first butt joint portion, sets up first flange and the first main pipe body that first butt joint portion is terminal, first main pipe body first butt joint portion with first flange coaxial coupling in proper order, just the external diameter of first butt joint portion is less than first flange with the external diameter of first main pipe body, the second pipeline includes second butt joint portion, sets up the terminal second flange of second butt joint portion and second main pipe body, the second main pipe body second butt joint portion with the second flange coaxial coupling in proper order, just the external diameter of second butt joint portion is less than the second flange with the external diameter of second main pipe body, first flange with the second flange all overlaps and is established in the sealing member main part and in the mounting hole, the automobile-used connection structure of pump line still includes the buffer block, buffer block partially inserts along the axis direction and locates respectively first flange is close to first butt joint portion first flange and second butt joint portion one end be close to the flange.

The utility model discloses an in one embodiment, sealing member main part both sides evenly are provided with first seal lip, set up respectively sealing member main part both sides form first interval groove between the first seal lip, first pipeline includes first butt joint portion, sets up first flange and the first main pipe body that first butt joint portion is terminal, first main pipe body first butt joint portion with first flange coaxial coupling in proper order, just the external diameter of first butt joint portion is less than first flange with the external diameter of first main pipe body, the second pipeline includes second butt joint portion, sets up second butt joint portion terminal second flange and second main pipe body, the second main pipe body second butt joint portion with the second flange coaxial coupling in proper order, just the external diameter of second butt joint portion is less than the second flange with the external diameter of second main pipe body, first flange with the second flange is all established in the sealing member main part and in the installation through-hole, automobile-used connection structure of pump still includes packing ring and pipeline, the packing ring is located respectively first butt joint portion and second butt joint portion are close to first stopper and second end butt joint portion first stopper.

The utility model discloses an in one embodiment, the pump truck is with pipeline connection structure still includes chucking spare, the chucking spare card is located the lateral surface and the locking connection of pipe seal spare.

The utility model also provides a pump truck, include as above-mentioned pipeline connection structure for the pump truck.

Compared with the prior art, the utility model beneficial effect who has: the pipeline connecting structure for the pump truck and the pump truck of the utility model have the advantages that the pipeline sealing element is arranged between the first pipeline and the second pipeline for connection, so that the received pumping pressure is flexibly transmitted, and the risks of cracking and pipe explosion are reduced; the condition that concrete leaks from the joint of the two pipelines in the pumping process is reduced; the sealing performance between pipelines can be enhanced, the position of the pipeline is quickly positioned and installed, so that the pipeline gap and the step are prevented from being generated, and meanwhile, the buffer effect on longitudinal pumping pressure is achieved.

Drawings

Fig. 1 is a schematic structural view of a pipe connection structure for a pump truck according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a sealing member of the pipe connection structure for the pump truck shown in fig. 1.

Fig. 3 is a schematic view of a retainer of the pipe connecting structure for a pump truck of fig. 1.

Fig. 4 is a schematic structural view of a pipe connection structure for a pump truck according to a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a first flange or a second flange of the pipe connection structure for the pump truck shown in fig. 4.

Fig. 6 is a schematic structural view of a pipe connection structure for a pump truck according to a third embodiment of the present invention.

Fig. 7 is a schematic structural view of a gasket of the pipe connection structure for the pump truck shown in fig. 6.

Fig. 8 is a schematic structural diagram of a limiting block of the pipe connection structure for the pump truck shown in fig. 6.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

First embodiment

The utility model provides a pipeline connection structure for pump truck, please refer to fig. 1-3, the pipeline connection structure for pump truck of an embodiment includes first pipeline 11, second pipeline 12 and pipeline seal 13, pipeline seal 13 includes sealing member main part 131, installation through-hole 132 has been seted up to sealing member main part 131, and sealing member main part 131 both sides all are provided with first seal lip 133 and second seal lip 134, first pipeline 11 includes first butt joint portion 111, second pipeline 12 includes second butt joint portion 121, first butt joint portion 111 and second butt joint portion 121 all overlap and establish in sealing member main part 131 and butt joint in installation through-hole 132, set up respectively and form first interval groove 135 between the first seal lip 133 of sealing member main part 131 both sides, it forms second interval groove 136 to set up between first seal lip 133 of each side of sealing member main part 131 and second seal lip 134. The pipe connecting structure for the pump truck further comprises a clamping piece 14, and the clamping piece 14 is clamped on the outer side face of the pipe sealing piece 13 and is in locking connection.

The pipeline connecting structure for the pump truck and the pump truck of the utility model are connected by arranging the pipeline sealing element 13 between the first pipeline 11 and the second pipeline 12, so that the received pumping pressure is flexibly transmitted, and the risks of cracking and tube explosion are reduced; the first groove 135 formed between the first sealing lips 133 reduces the instances of concrete leaking out of the abutment of the two pipes during pumping; the second sealing lip 134 can enhance the sealing performance between pipelines, quickly position the position of the installed pipeline so as to prevent the generation of pipeline gaps and steps, and simultaneously play a role in buffering longitudinal pumping pressure. In addition, the pipeline sealing element 13 is simple in overall structure, convenient to disassemble and assemble and convenient for pipeline connection of the pump truck.

Specifically, the pipe sealing element 13 may be a rubber sealing ring, which is preferably made of modified polyurethane, and the sealing ring formed by vulcanization molding has excellent mechanical properties such as good tensile strength, impact resistance, wear resistance, aging resistance, stable chemical properties, safety, environmental protection, high strength, and the like. It will be appreciated that the rubber seal ring may also be made of rubber, or ethylene propylene diene monomer, or neoprene, or nitrile rubber, or a plastic polymer (e.g., polytetrafluoroethylene).

In this embodiment, the first pipe 11 further includes a first flange 112 disposed at an end of the first butt portion 111, the second pipe 12 further includes a second flange 122 disposed at an end of the second butt portion 121, and the first flange 112 and the second flange 122 are both received in the mounting through hole 132 and abut against each other. Specifically, the outer and inner diameters of both the first and second flanges 112, 122 are equal in size.

In this embodiment, the first pipeline 11 further includes a first main pipe 113, the first butt joint 111, and the first flange 112 are sequentially and coaxially connected, and an outer diameter of the first butt joint 111 is smaller than outer diameters of the first flange 112 and the first main pipe 113, that is, a stepped structure is formed between the first butt joint 111 and the first flange 112 and the first main pipe 113 respectively; the second pipe 12 further includes a second main pipe 123, the second docking portion 121, and the second flange 122 are coaxially connected in sequence, and an outer diameter of the second docking portion 121 is smaller than outer diameters of the second flange 122 and the second main pipe 123, that is, a stepped structure is formed between the second docking portion 121 and the second flange 122 and the second main pipe 123, respectively. Specifically, the first main pipe 113 and the second main pipe 123 are for conveying concrete.

In this embodiment, the first sealing lip 133 abuts against the outer sides of the first flange 112 and the second flange 122, respectively; the second sealing lip 134 abuts against end surfaces of the first flange 112 and the second flange 122, and also abuts against outer surfaces of the first butting portion 111 and the second butting portion 121. Specifically, the first mating portion 111 and the first flange 112 present a stepped structure, and a surface of the second seal lip 134 on the side parallel to the axial direction abuts against an outer surface of the first mating portion 111, and a surface perpendicular to the axial direction abuts against an end surface of the first flange 112 at an end away from the second flange 122; the second butt joint portion 121 and the second flange 122 have a stepped structure, and a surface of the second seal lip 134 on the side parallel to the axial direction abuts against an outer surface of the second butt joint portion 121, and a surface perpendicular to the axial direction abuts against an end surface of the second flange 122 at an end away from the first flange 112.

Specifically, the second seal lip 134 functions as follows: 1. improving the tightness of the joint between the first duct 11 and the second duct 12: the end faces of the first flange 112 and the second flange 122 are respectively abutted, so that the sealing property between the two pipelines is enhanced; 2. the position of the pipeline is quickly positioned and installed: the two vertical and adjacent surfaces of the clamping piece are respectively abutted against the connecting part and the flange of the pipeline, and the connecting part and the flange are in a step shape, so that the clamping piece 14 is formed by sleeving the pipeline connecting piece 13 on the first flange 112 and the second flange 122 and is not easy to deviate or fall off, and the mounting precision, efficiency and stability between the pipelines are improved; 3. the longitudinal pumping pressure is well buffered in the pumping process: when the pipeline sealing member 13 is compressed by the clamping member 14, flexible deformation is generated, so that rubber stress is released, and in addition, after the first pipeline 11 and the second pipeline 12 are locked and connected by the clamping member 14, the pumping pressure is very high in the pumping process, the first pipeline 11 and the second pipeline 12 are respectively in contact with the flange and the butt joint part through the second sealing lip 134, the buffer effect on the pipeline longitudinal pumping pressure air channel is achieved, the protection effect on the flange is also achieved, and the flange is prevented from being deformed and cracked due to the pumping pressure.

In this embodiment, the pipe sealing member 13 may be ring-shaped, the pipe sealing member 13 is coaxially sleeved on the first pipe 11 and the second pipe 12, two sides of the first spacing groove 135 include lug grooves 1351, two lug grooves 1351 are respectively concave to two sides along a direction parallel to the axial direction, and a side wall between the two lug grooves 1351 is convex facing the axial direction. In particular, the structure involved enables the pressure to be transmitted flexibly, the sealing of the sealing lip surface is tighter the larger the pumping pressure is, and the sealing of the pumping pipeline is realized.

Further, a face of the ear groove 1351 adjacent to the first flange 112 and the second flange 122 forms a first included angle with the axial direction; the side of the ear groove 1351 remote from the first flange 112 and the second flange 122 is parallel to the axial direction, or forms a second angle. Preferably, the first included angle is 20-50 degrees, and the second included angle is 20-50 degrees.

In this embodiment, one surface of the second spacing groove 136 is perpendicular to the axial direction, and the other surface of the second spacing groove 136 forms a third included angle with the axial direction. Preferably, the third included angle is 20 ° to 50 °.

In this embodiment, the extending direction of the first sealing lip 133 and the axial direction of the first pipeline 11 and the second pipeline 12 form an included angle of 20 ° to 50 °, so that the leakage of concrete from the joint of the two pipelines in the conveying process is reduced, and the cost is reduced.

The utility model also provides a pump truck, including foretell pipeline connection structure for the pump truck.

Second embodiment

The pump truck pipeline connecting structure of this embodiment is similar to that of the first embodiment, except that only the first seal lip 133 is disposed in the pipeline sealing member 13, a plurality of mounting grooves are disposed on the first flange 112 and the second flange 122, and the pump truck pipeline connecting structure further includes a plurality of buffer blocks 15.

Referring to fig. 4, the pipe connecting structure for a pump truck of the present embodiment includes a first pipe 11, a second pipe 12, a pipe sealing member 13, a clamping member 14, and a buffer block 15; the first pipeline 11 comprises a first butt-joint part 111, a first flange 112 and a first main pipe 113, wherein the first main pipe 113, the first butt-joint part 111 and the first flange 112 are coaxially connected in sequence; the second pipeline 12 comprises a second butt joint part 121, a second flange 122 and a second main body pipe 123, wherein the first main body pipe 123, the first butt joint part 121 and the second flange 122 are sequentially and coaxially connected; the first flange 112 and the second flange 122 are both accommodated in the sealing member main body 131 of the pipe sealing member 13 and abut against each other, the buffer blocks 15 are partially inserted at intervals in the axial direction at one end of the first flange 112 close to the first butt joint portion 111 and one end of the second flange 122 close to the second butt joint portion 121, respectively, and the clamping member 14 is clamped on the outer side surface of the pipe sealing member 13 and is locked and connected.

Specifically, referring to fig. 5, the first flange 112 is provided with a plurality of first mounting grooves 1121, and the second flange 122 is provided with a plurality of second mounting grooves 1221; the buffer block 15 is partially disposed in the first mounting groove 1121 and the second mounting groove 1221, and the other portion abuts against the clamping member 14, and the clamping member 14 is clamped on the outer side surface of the pipe sealing member 13 and clamps the buffer block 15.

Specifically, the buffer block 15 may be silicone rubber, or ethylene propylene diene monomer, or neoprene, or nitrile rubber, or a plastic polymer (e.g., polytetrafluoroethylene). When the pump truck starts to work, the pipeline can be subjected to pressure of longitudinal pumping, the buffer block 15 is arranged between the flange and the clamping piece 14, the pipeline is not directly contacted with the clamping piece 14, and the buffer block 15 plays a role in buffering, so that the pipeline is not easy to impact and deform; meanwhile, the first mounting groove 1121 and the second mounting groove 1221 are formed, so that the flange is light in weight, and the cost is reduced.

Third embodiment

The pipe connecting structure for a pump truck of this embodiment is similar to that of the first embodiment, except that only the first seal lip 133 is provided in the pipe seal 13, and the gasket 16 and the stopper 17 are added to the overall structure.

Referring to fig. 6, the pipe connecting structure for a pump truck of an embodiment includes a first pipe 11, a second pipe 12, a pipe sealing member 13, a clamping member 14, a gasket 16, and a stopper 17; the first pipeline 11 comprises a first butt joint part 111, a first flange 112 and a first main pipe 113, wherein the first main pipe 113, the first butt joint part 111 and the first flange 112 are sequentially and coaxially connected; the second pipeline 12 comprises a second butt joint part 121, a second flange 122 and a second main body pipe 123, wherein the first main body pipe 123, the first butt joint part 121 and the second flange 122 are sequentially and coaxially connected; the first flange 112 and the second flange 122 are both accommodated in the sealing element main body 131 of the pipeline sealing element 13 and are abutted against each other, the gasket 16 is respectively sleeved on the first abutting portion 111 and the second abutting portion 121 and is abutted against the first flange 112 and the second flange 122, the limiting block 17 is respectively wrapped at one end of the first flange 112 close to the first abutting portion 111 and one end of the second flange 122 close to the second abutting portion 121, and the clamping piece 14 is clamped on the outer side surface of the pipeline sealing element 13 and is in locking connection.

Specifically, as shown in fig. 7, the gasket 16 is respectively sleeved on the first butt-joint portion 111 and the second butt-joint portion 121, and the gasket 16 is respectively fixed to the side walls of the first flange 112 and the second flange 122 by using an adhesive; as shown in fig. 8, the stopper 17 is in a ring-shaped step shape, the first stopper surface 171 abuts against the outer sides of the first butt-joint portion 111 and the second butt-joint portion 121, the second stopper surface 172 abuts against the gasket 16, the third stopper surface 173 abuts against the outer sides of the first flange 112 and the second flange 122, and the clamping member 14 is clamped on the outer side surface of the pipe sealing member 13 and clamps and fixes the stopper 17.

Specifically, the gasket 16 may be a rubber gasket; stop 17 may be carbon steel, or alloy steel, or cast iron, or a plastic polymer (e.g., polytetrafluoroethylene).

Specifically, the main functions of the limiting block 17 are: 1. the washer 16 and the flange are protected, and the service life of the flange is prolonged; 2. the extrusion degree of the gasket 16 by the limiting block 17 is adjusted, so that the fastening part 14 can be fixed on the joint more tightly, and the sealing performance of the connecting structure is improved. The connecting form is simple to install, parts are easier to disassemble and replace, the pressure of the pipeline longitudinal pump is buffered, and the service life of each part is greatly prolonged.

In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the sake of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

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

Claims (12)

1. The utility model provides a pipeline connection structure for pump truck, characterized in that, includes first pipeline (11), second pipeline (12) and pipeline seal spare (13), the one end of first pipeline (11) with the one end of second pipeline (12) is connected, pipeline seal spare (13) are including sealing member main part (131), installation through-hole (132) have been seted up in sealing member main part (131), first pipeline (11) with the junction of second pipeline (12) holds in installation through-hole (132), pipeline seal spare (13) are along axial and radial seal first pipeline (11) with the junction of second pipeline (12).

2. The pipe connecting structure for a pump truck according to claim 1, wherein a first seal lip (133) and a second seal lip (134) are provided on both sides of the seal body (131), the first pipe (11) includes a first butt portion (111), the second pipe (12) includes a second butt portion (121), the first butt portion (111) and the second butt portion (121) are both fitted in the seal body (131) and butted in the mounting through hole (132), a first spacing groove (135) is formed between the first seal lips (133) respectively provided on both sides of the seal body (131), and a second spacing groove (136) is formed between the first seal lip (133) and the second seal lip (134) provided on each side of the seal body (131).

3. The pipe connection structure for pump trucks of claim 2, wherein said first pipe (11) further comprises a first flange (112) provided at the end of said first butt portion (111), said second pipe (12) further comprises a second flange (122) provided at the end of said second butt portion (121), said first flange (112) and said second flange (122) being received in said mounting through hole (132) and abutting each other.

4. The pipe connection structure for pump trucks according to claim 3, characterized in that said first pipe (11) further comprises a first main pipe body (113), said first butt joint portion (111) and said first flange (112) are coaxially connected in sequence, and the outer diameter of said first butt joint portion (111) is smaller than the outer diameters of said first flange (112) and said first main pipe body (113);

the second pipeline (12) further comprises a second main pipe body (123), the second butt joint portion (121) and the second flange (122) are sequentially and coaxially connected, and the outer diameter of the second butt joint portion (121) is smaller than the outer diameters of the second flange (122) and the second main pipe body (123).

5. The pipe connection structure for pump trucks according to claim 3, characterized in that said first sealing lip (133) abuts against the outside of said first flange (112) and said second flange (122), respectively; the second seal lip (134) abuts against end faces of the first flange (112) and the second flange (122), respectively, and also abuts against outer surfaces of the first butt joint portion (111) and the second butt joint portion (121).

6. The pipe connecting structure for pump trucks of claim 3, characterized in that said pipe seal (13) is ring-shaped, said pipe seal (13) is coaxially fitted over said first pipe (11) and said second pipe (12), both sides of said first spacing groove (135) comprise lug grooves (1351), two of said lug grooves (1351) are respectively recessed to both sides in a direction parallel to an axial direction, and a side wall between two of said lug grooves (1351) is convex toward said axial direction.

7. The pipe connection structure for pump trucks of claim 6, characterized in that the face of said lug groove (1351) close to said first flange (112) and said second flange (122) forms a first angle with said axial direction; the surface of the lug groove (1351) far away from the first flange (112) and the second flange (122) is parallel to the axial direction or forms a second included angle; one surface of the second spacing groove (136) is perpendicular to the axial direction, and the other surface of the second spacing groove (136) forms a third included angle with the axial direction.

8. The pipe connection structure for a pump truck according to claim 2, wherein an extending direction of the first seal lip (133) forms an angle of 20 ° to 50 ° with an axial direction of the first pipe (11) and the second pipe (12).

9. The pipe connection structure for pump trucks according to claim 1, wherein first sealing lips (133) are uniformly disposed on both sides of the sealing member main body (131), first spacing grooves (135) are formed between the first sealing lips (133) respectively disposed on both sides of the sealing member main body (131), the first pipe (11) comprises a first butt portion (111), a first flange (112) and a first main pipe body (113) disposed at a distal end of the first butt portion (111), the first main pipe body (113), the first butt portion (111) and the first flange (112) are coaxially connected in sequence, an outer diameter of the first butt portion (111) is smaller than outer diameters of the first flange (112) and the first main pipe body (113), the second pipe (12) comprises a second butt portion (121), a second flange (122) and a second main pipe body (123) disposed at a distal end of the second butt portion (121), the second main pipe body (123), the second butt portion (121) and the second butt portion (122) are coaxially connected in sequence, and the second butt portion (121) and the second flange (122) and the second butt portion (121) is installed in the through hole (132), the pipeline connecting structure for the pump truck further comprises buffer blocks (15), wherein the buffer blocks (15) are partially inserted into one end, close to the first butt joint part (111), of the first flange (112) and one end, close to the second butt joint part (121), of the second flange (122) at intervals in the axial direction.

10. The pipe connection structure for a pump truck according to claim 1, wherein first sealing lips (133) are uniformly disposed on both sides of the seal main body (131), first spaced grooves (135) are formed between the first sealing lips (133) respectively disposed on both sides of the seal main body (131), the first pipe (11) includes a first butt portion (111), a first flange (112) and a first main pipe body (113) disposed at a distal end of the first butt portion (111), the first main pipe body (113), the first butt portion (111) and the first flange (112) are coaxially connected in sequence, an outer diameter of the first butt portion (111) is smaller than outer diameters of the first flange (112) and the first main pipe body (113), the second pipe (12) includes a second butt portion (121), a second flange (122) and a second main pipe body (123) disposed at a distal end of the second butt portion (121), the second main pipe body (123), the second butt portion (121) and the second butt portion (122) are coaxially connected in sequence, and the second butt portion (121) and the flange (122) is fitted in the second butt portion (121) and the through hole of the second butt portion (121) is smaller than the outer diameter of the flange (122) and the flange (122) of the second butt portion (121) is fitted in sequence, the pipeline connecting structure for the pump truck further comprises a gasket (16) and a limiting block (17), the gasket (16) is respectively sleeved on the first butt joint portion (111) and the second butt joint portion (121) and abutted against the first flange (112) and the second flange (122), and the limiting block (17) is respectively wrapped at one end, close to the first butt joint portion (111), of the first flange (112) and one end, close to the second butt joint portion (121), of the second flange (122).

11. The pipe connecting structure for a pump truck according to claim 1, characterized in that it further comprises a retainer (14), said retainer (14) being caught on an outer side surface of said pipe seal member (13) and locked in connection therewith.

12. A pump truck characterized by comprising the pipe connection structure for a pump truck according to any one of claims 1 to 9.

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