Conveying pipe group for flexible connection

Abstract

The utility model discloses a conveying pipe set for flexible connection, the conveying pipe set for flexible connection is used for communicating two tank bodies, the conveying pipe set for flexible connection comprises a hose, at least one connector assembly and at least one fastening assembly, the connector assembly comprises a plug connector, the plug connector is provided with an insertion part, the fastening assembly comprises at least one fastening structure and a reinforcing part, and the reinforcing part is provided with an insertion part. After the inserting part is inserted into the hose, the fastening structure tightly abuts against the inner wall of the hose or the outer wall of the inserting part so as to enable the inserting piece to be connected with the hose in a sealed mode, and when the reinforcing piece is arranged at one end of the hose in a sleeving mode and the inserting piece is inserted into the corresponding end of the hose, the fastening structure can tightly abut against the inner wall of the hose or the outer wall of the inserting part. The reinforcing piece can deform under external force and apply pressure to the hose so as to press the hose on the plug connector to be integrally locked, compared with an existing sealing mode, the hose connector can bear higher pressure intensity, the situation of fluid leakage caused by high-pressure use is effectively avoided, and the use requirement in a higher-pressure-intensity place is met.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying pipes, in particular to a conveying pipe group for flexible connection. Background Art

[0002] To achieve the conveyance of fluids, a conveying pipe is usually installed between two tanks. During actual installation, due to the positional deviation between the two tanks, there is a situation where the interfaces between the two tanks do not correspond. To reduce the installation difficulty, a flexible hose is usually used for connection.

[0003] The flexible hose usually needs to be configured with a metal joint, and is connected to the tank through the metal joint. The outer surface of one end of this metal joint is usually provided with bamboo joint teeth. By inserting the end of the metal joint with bamboo joint teeth into the flexible hose, and using the inner support of the bamboo joint teeth on the flexible hose and the elasticity of the flexible hose itself, the sealed connection between the metal joint and the flexible hose is achieved.

[0004] Obviously, this connection method is too simple. Under the action of external force, the metal joint may be separated from the flexible hose, affecting the use. In addition, in this connection method, the overall sealing performance is relatively poor, and thus the pressure resistance ability is also relatively poor. In the case of high pressure, fluid leakage may occur, and the use requirements in higher pressure places cannot be met. Summary of the Utility Model

[0005] One advantage of the utility model is to provide a conveying pipe group for flexible connection. The utility model can flexibly connect two tanks, reduce the assembly difficulty, and has good sealing performance and firm overall connection. Compared with the existing sealing method, it can withstand higher pressure, effectively avoid fluid leakage due to high-pressure use, and meet the use requirements in higher pressure places.

[0006] One advantage of the utility model is to provide a conveying pipe group for flexible connection. The utility model can be packaged and transported in a way that the flexible hose, the joint assembly and the reinforcement are disassembled, and the plug-in part and the connecting part of the joint assembly are disassembled, effectively saving space and reducing costs.

[0007] One advantage of the utility model is to provide a conveying pipe group for flexible connection. By using the detachable design of the plug-in part and the connecting part, the flexible hose can be connected to different tanks equipped with the connecting part.

[0008] One advantage of the utility model is to provide a conveying pipe group for flexible connection. Through the detachable design of the connecting part and the tank, the conveying pipe group for flexible connection can be assembled with different tanks, and then different two tanks can be connected.

[0009] To achieve at least one of the above advantages of the present utility model, the present utility model provides a conveying pipe group for flexible connection, which is used to connect two tanks. The conveying pipe group for flexible connection includes:

[0010] A hose that can undergo elastic deformation;

[0011] At least one joint assembly, which is detachably and sealingly inserted into the hose. The inside of the joint assembly is hollow, and the hose is connected to one of the tanks through the joint assembly. The joint assembly includes:

[0012] An insert, which has an insertion part. The insert can be installed on the hose in a way that the insertion part is inserted into the hose and is connected to the hose;

[0013] At least one fastening assembly, and the number of the fastening assemblies is the same as the number of the joint assemblies. The fastening assembly includes:

[0014] At least one fastening structure, which is annular and formed on the outer wall of the insertion part or the inner wall of the hose. When either the insertion part or the hose forms the fastening structure and the other moves relatively so that the two are inserted and matched, with reference to the moving direction of the corresponding moving insertion part or the hose, the cross-sectional dimension of the fastening structure gradually increases. After the insertion part is inserted into the hose, the fastening structure tightly abuts against the inner wall of the hose or the outer wall of the insertion part to seal and connect the insert to the hose;

[0015] A reinforcement, which can be sleeved on the hose. When the reinforcement is sleeved on one end of the hose and the insert is inserted into the corresponding end of the hose, the reinforcement remains on the outer peripheral side of the insert. The reinforcement can undergo plastic deformation under external force and press on the hose to press the hose against the insert for overall locking.

[0016] According to an embodiment of the present utility model, the reinforcement is applied with a radial pressure to form at least one pressure groove parallel to its axis and squeeze the insert through the hose for overall locking.

[0017] According to an embodiment of the present utility model, a plurality of the fastening structures are provided, and the plurality of the fastening structures are arranged along the length direction of the insertion part or the hose.

[0018] According to an embodiment of the present utility model, the fastening structure is implemented as a rubber material and integrally formed on the inner wall of the hose. With reference to the direction in which the insertion part is inserted into the hose, the cross-sectional dimension of the fastening structure gradually increases. The cross-sectional dimension of the insertion part is smaller than the maximum inner diameter cross-sectional area of the part of the hose where the fastening structure is formed, and the cross-sectional dimension of the insertion part is larger than the minimum inner diameter cross-sectional area of the part of the hose where the fastening structure is formed.

[0019] According to an embodiment of the present utility model, the fastening structure is implemented as a metal material and integrally formed on the outer wall of the insertion part. With reference to the moving direction in which the hose is sleeved on the insertion part, the cross-sectional dimension of the fastening structure gradually increases. The minimum cross-sectional dimension of the part of the insertion part where the fastening structure is formed is smaller than the inner diameter cross-sectional area of the hose, and the maximum cross-sectional dimension of the part of the insertion part where the fastening structure is formed is larger than the inner diameter cross-sectional area of the hose.

[0020] According to an embodiment of the present utility model, both the fastening structure and the insertion part can undergo plastic deformation. When the reinforcement part and the plug-in part are both assembled on the hose, the reinforcement part undergoes plastic deformation under an external force and squeezes the fastening structure and the insertion part through the hose, causing both of them to undergo plastic deformation.

[0021] According to an embodiment of the present utility model, the reinforcement part has a displacement-limiting end. The reinforcement part can be sleeved on one end of the hose with the end opposite to the displacement-limiting end first, and the corresponding end face of the hose can be held inside the reinforcement part in a sleeved manner.

[0022] According to an embodiment of the present utility model, when the reinforcement part and the plug-in part are both assembled on the hose, one end face of the hose remains in contact with the inner wall of the displacement-limiting end, and the insertion part remains in contact with the end face of the displacement-limiting end.

[0023] According to an embodiment of the present utility model, the plug-in part further has a docking part, which is formed by extending from the insertion part. The joint assembly further includes a connecting part, which is installed on the docking part, and one end of the connecting part away from the docking part is hermetically connected to the tank body. The plug-in part is communicated with the tank body through the connecting part.

[0024] According to an embodiment of the present utility model, the plug-in member further has an abutting portion formed on the outer wall of the docking portion. The joint assembly further includes a connecting member which is penetrated by the docking portion and restricted by the abutting portion to be sleeved on the docking portion. The connecting member is detachably mounted on the docking portion through the connecting member. The conveying pipe group for flexible connection further includes a sealing structure, which includes a conical groove and an abutting and sealing protrusion. The outer peripheral wall of the abutting and sealing protrusion forms an arc wall. The abutting and sealing protrusion is formed on the outside of either the abutting portion or the connecting member, and the other forms a conical groove and is coaxial with the conical groove. When the connecting member is docked with the docking portion, the abutting and sealing protrusion corresponds to the conical groove, and the arc wall is located at one end of the abutting and sealing protrusion close to the conical groove. When the plug-in member is connected to the connecting member through the connecting member, the connecting member squeezes the abutting portion so that the arc wall of the abutting and sealing protrusion keeps abutting against the inclined wall of the conical groove. The plug-in member is hermetically connected to the connecting member through the abutting action between the abutting and sealing protrusion and the conical groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. shows a usage scenario diagram of the conveying pipe group for flexible connection according to the present utility model.

[0026] Figure 2 FIG. shows a schematic structural diagram of the conveying pipe group for flexible connection according to the present utility model.

[0027] Figure 3 FIG. shows a schematic structural diagram of the conveying pipe group for flexible connection according to the present utility model before assembly.

[0028] Figure 4 FIG. shows a structural sectional view of the conveying pipe group for flexible connection according to the present utility model.

[0029] Figure 5 FIG. shows a partial structural sectional view of an embodiment of the conveying pipe group for flexible connection according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0031] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0032] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the number.

[0033] Reference Figures 1 to 2 , according to a preferred embodiment of the present utility model, a conveying pipe group for flexible connection will be elaborated in detail below. The conveying pipe group for flexible connection is used to connect two tanks. The conveying pipe group for flexible connection includes a hose 10 and at least one joint assembly 20. The joint assembly 20 is detachably and sealingly inserted into the hose 10. The interior of the joint assembly 20 is hollow, and the hose 10 is connected to one of the tanks through the joint assembly 20.

[0034] It is worth mentioning that through the design of the hose 10, when connecting the two tanks, the interfaces of the two tanks do not need to be aligned, which increases the convenience of assembly.

[0035] In one embodiment, there is one joint assembly 20. At this time, one end of the hose 10 is connected to one of the tanks, and the other end is connected to the joint assembly 20. And the hose 10 is connected to the other tank through the joint assembly 20.

[0036] In another embodiment, there are two joint assemblies 20. At this time, both ends of the hose 10 are connected with the joint assemblies 20, and the hose 10 is respectively connected to the two tanks through the joint assemblies 20.

[0037] Reference Figures 3 to 5 , the joint assembly 20 includes a plug-in part 21. The plug-in part 21 has an insertion part 211. The plug-in part 21 can be installed on the hose 10 in a manner that the insertion part 211 is inserted into the hose 10 and is connected to the hose 10.

[0038] The conveying pipe group for the flexible connection further includes at least one fastening component 30, and the number of the fastening components 30 is the same as the number of the joint components 20. The fastening component 30 includes at least one fastening structure 31, and the fastening structure 31 is annular and formed on the outer wall of the insertion part 211 or the inner wall of the hose 10. When either the insertion part 211 or the hose 10 forms the fastening structure 31 and the other moves relatively to make the two be inserted and matched, with reference to the moving direction of the corresponding moving insertion part 211 or the hose 10, the cross-sectional dimension of the fastening structure 31 gradually increases. The hose 10 can undergo elastic deformation. After the insertion part 211 is inserted into the hose 10, the fastening structure 31 tightly abuts against the inner wall of the hose 10 or the outer wall of the insertion part 211 to seal-connect the plug-in part 21 and the hose 10 to prevent leakage.

[0039] Reference Figure 3 , preferably, the fastening structure 31 is implemented as a metal material and integrally formed on the outer wall of the insertion part 211. With reference to the moving direction of the hose 10 sleeved on the insertion part 211, the cross-sectional dimension of the fastening structure 31 gradually increases, the minimum cross-sectional dimension of the part of the insertion part 211 forming the fastening structure 31 is smaller than the inner diameter cross-sectional area of the hose 10, and the maximum cross-sectional dimension of the part of the insertion part 211 forming the fastening structure 31 is larger than the inner diameter cross-sectional area of the hose 10. During the process of the insertion part 211 being inserted into the hose 10, the fastening structure 31 formed on the outer wall of the insertion part 211 extrudes the inner wall of the hose 10 so that the plug-in part 21 can be hermetically inserted into the hose 10.

[0040] Reference Figure 5 , alternatively, the fastening structure 31 is implemented as a rubber material and integrally formed on the inner wall of the hose 10. With reference to the direction of the insertion part 211 being inserted into the hose 10, the cross-sectional dimension of the fastening structure 31 gradually increases, the cross-sectional dimension of the insertion part 211 is smaller than the maximum inner diameter cross-sectional area of the part of the hose 10 forming the fastening structure 31, and the cross-sectional dimension of the insertion part 211 is larger than the minimum inner diameter cross-sectional area of the part of the hose 10 forming the fastening structure 31. During the process of the insertion part 211 being inserted into the hose 10, the outer wall of the insertion part 211 extrudes the fastening structure 31 formed on the inner wall of the hose 10 so that the plug-in part 21 can be hermetically inserted into the hose 10.

[0041] Preferably, a plurality of fastening structures 31 are provided, and the plurality of fastening structures 31 are arranged along the length direction of the insertion part 211 or the hose 10. When the insertion part 211 is inserted into the hose 10, the plurality of fastening structures 31 simultaneously abut against the inner wall of the hose 10 or the outer wall of the insertion part 211, so as to improve the sealing performance of the connection between the hose 10 and the connector 21.

[0042] Reference Figures 1 to 5 , the fastening assembly 30 further includes a reinforcement member 32, and the reinforcement member 32 can be sleeved on the hose 10. When the reinforcement member 32 is sleeved on one end of the hose 10 and the connector 21 is inserted into the corresponding end of the hose 10, the reinforcement member 32 is held on the outer peripheral side of the connector 21. The reinforcement member 32 can generate plastic deformation under external force and press the hose 10 against the connector 21 for overall locking, further improving the sealing performance and firmness of the connection between the hose 10 and the connector 21. Compared with the existing sealing methods, it can meet the use requirements in higher pressure places.

[0043] Reference Figures 1 to 3 , preferably, the reinforcement member 32 is applied with a radial pressure to form at least one pressure groove 3201 parallel to its axis and squeeze the connector 21 through the hose 10, so that the reinforcement member 32, the hose 10 and the connector 21 are integrally locked.

[0044] Preferably, when the fastening structure 31 is made of a metal material and integrally formed on the outer wall of the insertion part 211, both the fastening structure 31 and the insertion part 211 can undergo plastic deformation. When the reinforcement member 32 and the connector 21 are both assembled on the hose 10, the reinforcement member 32 undergoes plastic deformation under external force and squeezes the fastening structure 31 and the insertion part 211 through the hose 10 to make both of them undergo plastic deformation, thereby improving the sealing performance of the connection between the hose 10 and the connector 21.

[0045] Reference Figures 4 to 5 , further, the reinforcement member 32 has a position-limiting end 321, and the reinforcement member 32 can be sleeved on one end of the hose 10 with the end opposite to the position-limiting end 321 first and the corresponding end face of the hose 10 can be held inside the reinforcement member 32, so as to limit the position of the reinforcement member 32 sleeved on the hose 10 through the position-limiting end 321, ensuring that after the connector 21 is inserted into the hose 10, the reinforcement member 32 is held on the outer peripheral side of the connector 21.

[0046] Preferably, when both the reinforcing member 32 and the plug-in member 21 are assembled to the hose 10, one end surface of the hose 10 remains in contact with the inner wall of the movement-limiting end portion 321, and the insertion portion 211 remains in contact with the end surface of the movement-limiting end portion 321 to lock the position of the reinforcing member 32 and prevent the reinforcing member 32 from moving axially along the hose 10.

[0047] Further, internal threads are formed on the inner wall of the reinforcing member 32 to increase the friction between the reinforcing member 32 and the hose 10 when the reinforcing member 32 undergoes plastic deformation under an external force and presses the hose 10, thereby preventing relative movement between the reinforcing member 32 and the hose 10 and enhancing the firmness of the connection between the reinforcing member 32 and the hose 10.

[0048] Reference Figures 3 to 4 , the plug-in member 21 further has a pair of docking portions 212 which are formed by extending from the insertion portion 211. The joint assembly 20 further includes a connecting member 22 which is installed on the docking portion 212, and one end of the connecting member 22 away from the docking portion 212 is sealingly connected to the tank body, and the plug-in member 21 is communicated with the tank body through the connecting member 22.

[0049] Preferably, the connecting member 22 is detachably and sealingly connected to the docking portion 212, so that the joint assembly 20 can be packaged and transported in a segmented manner, effectively saving space and reducing costs. In addition, by disassembling the docking portion 212 from the connecting member 22, the plug-in member 21 equipped with the hose 10 can be assembled with the connecting members 22 provided on different tank bodies, so that the hose 10 can be communicated with different tank bodies.

[0050] Preferably, the connecting member 22 is threadedly inserted into the tank body and sealingly connected to the tank body, so as to realize the disassembly and assembly of the soft-connection conveying pipe group and the tank body by rotating the connecting member 22. In addition, by disassembling the connecting member 22 from the tank body, the soft-connection conveying pipe group can be assembled with different tank bodies, so that the soft-connection conveying pipe group can communicate two different tank bodies.

[0051] Reference Figures 3 to 4 , further, the plug-in member 21 further has an abutting portion 213 which is formed on the outer wall of the docking portion 212. The joint assembly 20 further includes a connecting member 23 which is penetrated by the docking portion 212 and is restricted by the abutting portion 213 to be sleeved on the docking portion 212, and the connecting member 22 is detachably installed on the docking portion 212 through the connecting member 23.

[0052] In one embodiment, the connecting member 23 is disposed outside the abutting portion 213 in a manner that it can move along the docking portion 212. The connecting member 23 is threadedly sleeved on the communicating member 22, so as to realize the disassembly and assembly of the plugging member 21 and the communicating member 22 by rotating the connecting member 23.

[0053] The conveying pipe group for flexible connection further includes a sealing structure 40. The sealing structure 40 includes a conical groove 41 and a sealing protrusion 42. An arc wall 421 is formed on the outer peripheral wall of the sealing protrusion 42. The sealing protrusion 42 is formed on the outside of either the abutting portion 213 or the communicating member 22, and the other forms the conical groove 41 and is coaxial with the conical groove 41. When the communicating member 22 is docked with the docking portion 212, the sealing protrusion 42 corresponds to the conical groove 41, and the arc wall 421 is located at one end of the sealing protrusion 42 close to the conical groove 41. When the plugging member 21 is connected to the communicating member 22 through the connecting member 23, the connecting member 23 squeezes the abutting portion 213 so that the arc wall 421 of the sealing protrusion 42 remains in contact with the inclined wall of the conical groove 41. The plugging member 21 is hermetically connected to the communicating member 22 through the abutting action between the sealing protrusion 42 and the conical groove 41. Compared with the traditional method of using a rubber ring for sealing, it can withstand higher pressures and is suitable for use in places where the pressure is within 70 MPa, effectively avoiding fluid leakage due to high-pressure use.

[0054] Preferably, the conical groove 41 is formed in the radial direction of the communicating member 22, and the sealing protrusion 42 is integrally formed with the abutting portion 213.

[0055] Alternatively, the conical groove 41 is formed in the abutting portion 213, and the sealing protrusion 42 is formed on the outside of the communicating member 22.

[0056] The present application also provides an assembly method for the conveying pipe group for flexible connection, including the following steps:

[0057] Put the reinforcing member 32 on the hose 10 from one end of the hose 10;

[0058] Insert the insertion portion 211 of the plugging member 21 into the corresponding end of the hose 10. The fastening structure 31 is hermetically connected to the inner wall of the hose 10 or the outer wall of the insertion portion 211 to hermetically connect the plugging member 21 and the hose 10;

[0059] Apply pressure to the reinforcing member 32 to cause it to undergo plastic deformation. The reinforcing member 32 applies pressure to the hose 10 to press the hose 10 against the plugging member 21 for overall locking.

[0060] Preferably, the assembling method of the conveying pipe group for flexible connection further comprises the following steps:

[0061] Using the connecting piece 23, connect the connecting member 22 for assembling with the tank body to the docking portion 212 of the plug-in member 21. The abutting portion 213 of the plug-in member 21 is squeezed by the connecting piece 23, so that the arc wall 421 of the sealing protrusion 42 abuts against the inclined wall of the tapered groove 41, enabling the plug-in member 21 to be hermetically connected to the connecting member 22 through the abutting action between the sealing protrusion 42 and the tapered groove 41.

[0062] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the principle, any deformation or modification of the embodiments of the present invention is possible.

Claims

1. A conveying pipe group for flexible connection, which is used to connect two tanks, and is characterized in that, The delivery pipe set for soft connection comprises: A hose capable of elastic deformation; At least one joint assembly, the joint assembly is detachably sealed and plugged into the hose, the joint assembly is hollow inside, the hose is connected to the tank through the joint assembly, and the joint assembly includes: A plug connector having an insertion portion, wherein the plug connector can be installed on the hose and communicate with the hose in a manner that the insertion portion is inserted into the hose; At least one fastening assembly, the number of which is consistent with the number of the joint assemblies, and the fastening assembly includes: At least one fastening structure, the fastening structure is annular and formed on the outer wall of the insertion part or the inner wall of the hose, when either the insertion part or the hose forms the fastening structure and the other moves relatively to make the two plug and match, the cross-sectional size of the fastening structure gradually increases with the moving direction of the corresponding moving insertion part or the hose as a reference, and after the insertion part is inserted into the hose, the fastening structure tightly abuts against the inner wall of the hose or the outer wall of the insertion part to seal the connector to the hose; A reinforcement member, which can be sleeved on the hose. When the reinforcement member is sleeved on one end of the hose and the connector is inserted into the corresponding end of the hose, the reinforcement member is retained on the outer peripheral side of the connector. The reinforcement member can be plastically deformed by external force and pressurize the hose to press the hose against the connector to lock it as a whole.

2. The conveying pipe group for flexible connection according to claim 1, characterized in that, The reinforcing member is subjected to radial pressure to form at least one pressing groove parallel to its axis and to press the plug-in member through the hose to lock the whole.

3. The delivery pipe group for flexible connection according to claim 1, wherein A plurality of the fastening structures are provided, and the plurality of the fastening structures are arranged along the length direction of the insertion portion or the hose.

4. The delivery pipe group for soft connection according to claim 1, characterized in that, The fastening structure is implemented as a rubber material and is integrally formed on the inner wall of the hose. With reference to the direction in which the insertion portion is inserted into the hose, the cross-sectional size of the fastening structure gradually increases, the cross-sectional size of the insertion portion is smaller than the maximum inner diameter cross-sectional area of the portion of the hose forming the fastening structure, and the cross-sectional size of the insertion portion is larger than the minimum inner diameter cross-sectional area of the portion of the hose forming the fastening structure.

5. The conveying pipe group for flexible connection according to any one of claims 1 to 3, characterized in that The fastening structure is implemented as a metal material and is integrally formed on the outer wall of the insertion part. Along the moving direction of the hose sleeve on the insertion part as a reference, the cross-sectional size of the fastening structure gradually increases, the minimum cross-sectional size of the part of the insertion part forming the fastening structure is smaller than the inner diameter cross-sectional area of the hose, and the maximum cross-sectional size of the part of the insertion part forming the fastening structure is larger than the inner diameter cross-sectional area of the hose.

6. The conveying pipe group for flexible connection according to claim 5, characterized in that, The fastening structure and the inserting part are both capable of plastic deformation. When the reinforcing member and the connector are assembled on the hose, the reinforcing member is plastically deformed by external force and squeezes the fastening structure and the inserting part through the hose so that both are plastically deformed.

7. The conveying pipe group for flexible connection according to claim 1, wherein, The reinforcing member has a displacement-limiting end portion. The reinforcing member can be sleeved on one end portion of the hose with an end portion opposite to the displacement-limiting end portion leading, and the corresponding end face of the hose can be held inside the reinforcing member in a sleeved manner on the hose.

8. The delivery pipe group for flexible connection according to claim 7, characterized in that, When both the reinforcing member and the plugging member are assembled on the hose, one end face of the hose remains in abutment with the inner wall of the displacement-limiting end portion, and the insertion portion remains in abutment with the end face of the displacement-limiting end portion.

9. The delivery pipe group for flexible connection according to claim 1, characterized in that, The plugging member further has a docking portion, the docking portion is formed by extending from the insertion portion. The joint assembly further includes a connecting member, the connecting member is installed on the docking portion, and one end of the connecting member away from the docking portion is sealingly connected to the tank body, and the plugging member is communicated with the tank body through the connecting member.

10. The conveying pipe group for flexible connection according to claim 9, characterized in that, The plugging member further has an abutting portion, the abutting portion is formed on the outer wall of the docking portion. The joint assembly further includes a connecting member, the connecting member is penetrated by the docking portion and is restricted by the abutting portion to be held sleeved on the docking portion. The connecting member is detachably installed on the docking portion through the connecting member. The conveying pipe group for flexible connection further includes a sealing structure, the sealing structure includes a conical groove and a sealing protrusion, an arc wall is formed on the outer peripheral wall of the sealing protrusion. The sealing protrusion is formed on the outside of either the abutting portion or the connecting member, and the other forms a conical groove and is coaxial with the conical groove. When the connecting member is docked with the docking portion, the sealing protrusion corresponds to the conical groove, and the arc wall is located at one end portion of the sealing protrusion close to the conical groove. When the plugging member is connected to the connecting member through the connecting member, the connecting member squeezes the abutting portion so that the arc wall of the sealing protrusion remains in abutment with the inclined wall of the conical groove. The plugging member is sealingly connected to the connecting member through the abutting action between the sealing protrusion and the conical groove.

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