Conveying pipe for conveying automobile urea liquid

Abstract

The utility model discloses a delivery pipe for delivering automobile urea liquid, which relates to the field of urea box butt-joint pipeline structures and comprises a delivery pipe body, a urea box butt-joint pipe is arranged on one side of the delivery pipe body, a mother pipe connecting seat is fixedly connected to one side of the urea box butt-joint pipe, and a son pipe connector is fixedly connected to one side of the delivery pipe body. A movable threaded ring is movably connected to the outer side of the secondary pipe connector, an extrusion ring is fixedly connected to one side of the secondary pipe connector, a sealing groove seat is fixedly connected to the inner wall of the primary pipe connecting seat, a reset spring is fixedly connected into a sealing groove of the sealing groove seat, and a sealing ring is installed on one side of the reset spring. Preliminary connection of the mother pipe connecting seat and the son pipe connecting head is achieved through threaded connection of the movable threaded ring and the threaded wall groove, and the extrusion ring can be pushed to enter the sealing groove seat to extrude the sealing ring to achieve sealing of the connecting position during connection, so that the connecting effect and the sealing performance of the connecting position of the conveying pipe body are guaranteed. And the situation of urea liquid leakage caused by loosening of the joint is avoided.

Description

Technical Field

[0001] The utility model relates to the field of urea tank butting pipe structures, in particular to a delivery pipe for delivering automobile urea liquid. Background Art

[0002] In SCR post-treatment technology, the delivery pipe is an essential component. It is primarily used to transport the urea liquid from the urea tank to the exhaust pipe, where urea decomposes at high temperatures to form NH3, which acts as a reducing agent to reduce NOx in the exhaust pipe to N2. However, existing delivery pipes are mostly single tube structures, which cannot heat or insulate the urea liquid during the delivery process. Therefore, when operating in low-temperature environments, the urea liquid temperature may be too low. This leads to insufficient ammonia production during subsequent operation due to insufficient heating, which affects the NOx reduction effect in the exhaust gas.

[0003] Although the existing delivery pipe can preheat the automobile urea during the transportation process to avoid insufficient hydrolysis and insufficient ammonia production due to insufficient heating, which causes the NOx in the exhaust gas to be unable to be completely reduced to N2; however, the pipe connection lacks an effective sealing structure, which makes the connection with the urea tank pipe prone to leakage. During long-term use, the connection is likely to loosen, resulting in urea liquid leakage, thereby affecting the vehicle's exhaust gas reduction function.

[0004] Therefore, it is necessary to invent a kind of conveying automobile urea liquid delivery pipe to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a delivery pipe for delivering automobile urea liquid, so as to solve the problem of lack of sealing structure in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a delivery pipe for transporting automobile urea liquid, comprising a delivery pipe body, a urea tank docking pipe being provided on one side of the delivery pipe body, a main pipe connecting seat being fixedly connected to one side of the delivery pipe body, a sub-pipe connector being fixedly connected to one side of the main pipe connecting seat, a docking ring being fixedly connected to one side of the sub-pipe connecting seat, an assembly ring being fixedly connected to one side of the sub-pipe connector, a movable threaded ring being movably connected to the outer side of the sub-pipe connector, an extrusion ring being fixedly connected to one side of the sub-pipe connector, a sealing groove seat being fixedly connected to the inner wall of the main pipe connecting seat, a return spring being fixedly connected to the sealing groove of the sealing groove seat, a sealing ring being installed on one side of the return spring, a liquid guide inner tube being provided inside the delivery pipe body, wherein a heating layer is provided on the outer side of the liquid guide inner tube.

[0007] Preferably, a rubber ring is installed on one side of the assembly ring.

[0008] Preferably, one side of the assembly ring is threadedly connected with multiple groups of docking bolts, and the multiple groups of docking bolts are distributed in a ring on one side of the assembly ring. One side of the docking ring is provided with multiple groups of docking threaded holes, and the multiple groups of docking threaded holes are distributed in a ring on one side of the docking ring.

[0009] Preferably, a threaded wall groove is provided on the inner wall of the female pipe connecting seat.

[0010] Preferably, two groups of limiting rings are fixedly connected to the inner wall of the movable threaded ring, and the two groups of limiting rings are linearly distributed on the inner wall of the movable threaded ring. Two groups of movable grooves are opened on the outer wall of the sub-pipe connector, and the two groups of movable grooves are linearly distributed on the outer wall of the sub-pipe connector.

[0011] Preferably, two groups of thermal insulation layers are provided on the outside of the heating layer, and the two groups of thermal insulation layers are symmetrically distributed on the outside of the heating layer.

[0012] Preferably, a resistance wire is wound around the outer side of the heating layer.

[0013] Technical effects and advantages of this utility model:

[0014] 1. By arranging a mother pipe connector, a sub-pipe connector, a docking ring, an assembly ring, a rubber ring, a docking bolt, a docking threaded hole, a movable threaded ring, a threaded wall groove, an extrusion ring, a sealing groove seat, a return spring, a sealing ring, a limit ring and a movable groove, the device can realize the preliminary connection between the mother pipe connector and the sub-pipe connector through the threaded connection of the movable threaded ring and the threaded wall groove, and during the connection, the extrusion ring can be pushed into the sealing groove seat to squeeze the sealing ring, and the rebound force of the return spring on the back of the sealing ring can be returned to the sealing ring, thereby realizing the sealing of the connection, and the mother pipe connector and the sub-pipe connector are further connected and installed through the threaded connection of the docking bolt and the docking threaded hole, and the use of the rubber ring further improves the sealing performance of the device, thereby ensuring the connection effect and sealing of the connection of the transport pipe body, and avoiding the situation where the connection is loose and causes leakage of urea liquid;

[0015] 2. By arranging the conveying pipe body, the liquid guiding inner pipe, the heating layer, the thermal insulation layer and the resistance wire, the device can heat the liquid guiding inner pipe and the urea liquid through the resistance wire wrapped around the outside of the heating layer, and the use of the thermal insulation layer ensures the heating effect of the device, thereby effectively avoiding the situation where the ambient temperature is too low, causing the temperature of the automobile urea liquid to be too low, resulting in insufficient ammonia production due to insufficient heating in subsequent work, and affecting the NOx reduction effect in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of a delivery pipe for delivering automobile urea liquid.

[0018] Figure 2 The utility model is a schematic diagram of the explosion structure of a delivery pipe for delivering automobile urea liquid.

[0019] Figure 3 The utility model is a schematic diagram of the internal structure of a delivery pipe for delivering automobile urea liquid.

[0020] Figure 4 This is a schematic diagram of the heating layer structure of a delivery pipe for delivering automobile urea liquid in the utility model.

[0021] In the figure: 1. Delivery pipe body; 2. Urea tank docking pipe; 3. Mother pipe connector; 4. Sub-pipe connector; 5. Docking ring; 6. Assembly ring; 7. Rubber ring; 8. Docking bolt; 9. Docking threaded hole; 10. Movable threaded ring; 11. Threaded wall groove; 12. Extrusion ring; 13. Sealing groove seat; 14. Return spring; 15. Sealing ring; 16. Limiting ring; 17. Movable groove; 18. Liquid guide inner tube; 19. Heating layer; 20. Insulation layer; 21. Resistance wire. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-4The shown embodiment is a delivery pipe for transporting automobile urea liquid, comprising a delivery pipe body 1, a urea tank docking pipe 2 is provided on one side of the delivery pipe body 1, a mother pipe connecting seat 3 is fixedly connected to one side of the urea tank docking pipe 2, wherein the mother pipe connecting seat 3 is a connecting component for the urea tank docking pipe 2, a sub-pipe connector 4 is fixedly connected to one side of the delivery pipe body 1, wherein the sub-pipe connector 4 is a connecting component for the delivery pipe body 1, a docking ring 5 is fixedly connected to one side of the mother pipe connecting seat 3, and an assembly ring 6 is fixedly connected to one side of the sub-pipe connector 4, wherein the assembly ring 6 can be connected to the docking ring 5, and a movable threaded ring 10 is movably connected to the outer side of the sub-pipe connector 4, wherein the movable threaded ring 10 is a main connecting component for the delivery pipe body 1 and the urea tank docking pipe 2, and the sub-pipe connector An extrusion ring 12 is fixedly connected to one side of the head 4, wherein the extrusion ring 12 can be used to enter the sealing groove seat 13 to extrude and seal the sealing ring 15, and the inner wall of the mother pipe connecting seat 3 is fixedly connected to the sealing groove seat 13, and a return spring 14 is fixedly connected to the sealing groove of the sealing groove seat 13, wherein the rebound force generated by the return spring 14 during deformation can be applied to the sealing ring 15, thereby effectively improving the sealing effect of the contact position between the sealing ring 15 and the extrusion ring 12, and a sealing ring 15 is installed on one side of the return spring 14, wherein the sealing ring 15 is the main sealing component of the device, and an inner liquid guide tube 18 is provided inside the conveying pipe body 1, wherein the inner liquid guide tube 18 is a urea liquid transmission component, and a heating layer 19 is provided on the outer side of the inner liquid guide tube 18.

[0024] A rubber ring 7 is installed on one side of the assembly ring 6, wherein the rubber ring 7 is made of rubber material. The use of this material can ensure the sealing of the connection between the assembly ring 6 and the docking ring 5, thereby avoiding the leakage of urea liquid during use and causing the failure of exhaust gas reduction.

[0025] One side of the assembly ring 6 is threadedly connected with multiple groups of docking bolts 8, and the multiple groups of docking bolts 8 are distributed in a ring shape on one side of the assembly ring 6. One side of the docking ring 5 is provided with multiple groups of docking threaded holes 9, and the multiple groups of docking threaded holes 9 are distributed in a ring shape on one side of the docking ring 5. The multiple groups of docking bolts 8 can be threadedly connected with the multiple groups of docking threaded holes 9, thereby realizing the connection between the assembly ring 6 and the docking ring 5. This connection method has a firm fixing effect and is convenient for the user to disassemble later.

[0026] A threaded wall groove 11 is provided on the inner wall of the mother pipe connecting seat 3, wherein the threaded wall groove 11 can be threadedly connected to the movable threaded ring 10, thereby realizing the connection between the sub-pipe connector 4 and the urea tank connecting pipe 2. This connection method realizes the preliminary connection between the delivery pipe body 1 and the urea tank connecting pipe 2, and at the same time, this connection method provides stable pressure for the sealing component.

[0027] Two groups of limiting rings 16 are fixedly connected to the inner wall of the movable threaded ring 10, and the two groups of limiting rings 16 are linearly distributed on the inner wall of the movable threaded ring 10. Two groups of movable grooves 17 are opened on the outer wall of the sub-pipe connector 4, and the two groups of movable grooves 17 are linearly distributed on the outer wall of the sub-pipe connector 4. The two groups of limiting rings 16 can be movably connected with the two groups of movable grooves 17, thereby realizing the limited rotation of the movable threaded ring 10, which is convenient for users to install and disassemble.

[0028] Two groups of insulation layers 20 are arranged on the outside of the heating layer 19. The two groups of insulation layers 20 are symmetrically distributed on the outside of the heating layer 19. The use of the two groups of insulation layers 20 improves the insulation effect of the conveying pipe body 1, and at the same time improves the heating effect of the heating layer 19, thereby improving the reduction effect of the exhaust gas.

[0029] The outside of the heating layer 19 is wound with a resistance wire 21, wherein the use of the resistance wire 21 can convert electrical energy into thermal energy, thereby realizing the heating function of the heating layer 19 and avoiding the situation where the ambient temperature is too low, resulting in low urea liquid temperature and low reduction efficiency.

[0030] Working principle: The user aligns the sub-pipe connector 4 on the outside of the delivery pipe body 1 with the mother pipe connector seat 3 on the urea tank butt pipe 2 and inserts it, then rotates the movable threaded ring 10. The movable threaded ring 10 can be threadedly connected with the internal threaded wall groove 11 of the mother pipe connector seat 3, thereby driving the sub-pipe connector 4 to penetrate into the mother pipe connector seat 3, so that the extrusion ring 12 at one end of the sub-pipe connector 4 can enter the sealing groove of the sealing groove seat 13, thereby contacting and squeezing the sealing ring 15. The return spring 14 on the back of the sealing ring 15 is deformed under force and generates a reverse force to apply to the sealing ring 15 to improve the sealing effect of the sealing ring 15, until the movable threaded ring 10 can no longer rotate, the delivery pipe body 1 and the urea tank butt pipe 2 are completed. The initial connection is made, the rotation of the movable threaded ring 10 drives the assembly ring 6 to be in close contact with the docking ring 5, and then the user screws the docking bolt 8 into the docking threaded hole 9 to further improve the connection effect of the delivery pipe body 1. At the same time, the rubber ring 7 on the outside of the assembly ring 6 is in close contact with the docking ring 5 after locking to further improve the sealing effect. Finally, the user connects the resistance wire 21 wrapped around the outside of the heating layer 19 to the automobile generator. When the car starts, the generator provides electrical energy to the resistance wire 21, and the resistance wire 21 converts electrical energy into heat energy, thereby heating the urea liquid inside the liquid guide inner tube 18 to improve the reduction efficiency of the exhaust gas, thereby realizing a sealing connection and heating function of the delivery pipe for transporting automobile urea liquid.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A delivery pipe for delivering automobile urea liquid, comprising a delivery pipe body (1), characterized in that: A urea tank butt joint (2) is provided on one side of the delivery pipe body (1), a main pipe connection seat (3) is fixedly connected to one side of the urea tank butt joint (2), a sub-pipe connection head (4) is fixedly connected to one side of the delivery pipe body (1), a butt joint ring (5) is fixedly connected to one side of the main pipe connection seat (3), an assembly ring (6) is fixedly connected to one side of the sub-pipe connection head (4), a movable threaded ring (10) is movably connected to the outer side of the sub-pipe connection head (4), an extrusion ring (12) is fixedly connected to one side of the sub-pipe connection head (4), a sealing groove seat (13) is fixedly connected to the inner wall of the main pipe connection seat (3), a return spring (14) is fixedly connected to the sealing groove of the sealing groove seat (13), a sealing ring (15) is installed on one side of the return spring (14), and a liquid guide inner tube (18) is provided inside the delivery pipe body (1), wherein a heating layer (19) is provided on the outer side of the liquid guide inner tube (18).

2. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: A rubber ring (7) is installed on one side of the assembly ring (6).

3. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: One side of the assembly ring (6) is threadedly connected to a plurality of groups of docking bolts (8), and the plurality of groups of docking bolts (8) are distributed in a ring shape on one side of the assembly ring (6). One side of the docking ring (5) is provided with a plurality of groups of docking threaded holes (9), and the plurality of groups of docking threaded holes (9) are distributed in a ring shape on one side of the docking ring (5).

4. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: The inner wall of the female pipe connecting seat (3) is provided with a threaded wall groove (11).

5. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: Two groups of limiting rings (16) are fixedly connected to the inner wall of the movable threaded ring (10), and the two groups of limiting rings (16) are linearly distributed on the inner wall of the movable threaded ring (10). Two groups of movable grooves (17) are opened on the outer wall of the sub-pipe connector (4), and the two groups of movable grooves (17) are linearly distributed on the outer wall of the sub-pipe connector (4).

6. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: Two groups of thermal insulation layers (20) are arranged on the outside of the heating layer (19), and the two groups of thermal insulation layers (20) are symmetrically distributed on the outside of the heating layer (19).

7. The delivery pipe for delivering automobile urea liquid according to claim 1, characterized in that: The outer side of the heating layer (19) is wound with a resistance wire (21).

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