Sealed urea heating pipe

Abstract

The utility model discloses a sealed urea heating pipe, and belongs to the technical field of heating urea pipes. Comprising a conveying pipeline made of EPDM materials, a first quick connector connected to one end of the conveying pipeline in a pressed mode, a second quick connector connected to the other end of the conveying pipeline in a pressed mode and two injection molding sheaths connected to the first quick connector and the second quick connector, the first quick connector and the second quick connector are connected with the conveying pipeline through pressing rings, and the two ends of the conveying pipeline are connected with the quick connectors in a pressed mode. The heating wires are arranged on the outer sides of the conveying pipeline, the first quick connector and the second quick connector and in the injection molding sheath so that it can be guaranteed that the urea solution can be heated and unfrozen through the quick connectors, and the heating uniformity and stability are improved. The heat preservation layer is arranged on the outer side of the heating wire, and the first corrugated pipe is arranged on the outer side of the heat preservation layer. The wire is arranged on one side of the first quick connector and connected to the heating wire. The wiring end is connected to the other end of the wire, so that the wire can be electrified for use; the second corrugated pipe is arranged on the outer side of the wire.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating urea pipes, and in particular relates to a sealed urea heating pipe. Background Art

[0002] The urea pipe is a pipeline used to transport urea solution, but the urea solution will solidify at low temperatures, resulting in the urea solution being unable to be sprayed out. Therefore, in order to ensure the normal use of the vehicle, a urea heating pipe has appeared on the market that can melt the solidified urea into liquid, and then the urea solution and the exhaust gas undergo a series of reactions to achieve the effect of treating the exhaust gas.

[0003] In the prior art, conventional delivery pipelines use PA11 / PA12 pipes, which have low heat resistance, anti-aging performance, and flexibility. The connection between quick connectors and delivery pipelines is prone to leakage. The joints are not easily heated, resulting in uneven heating of the urea solution. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a sealed urea heating pipe.

[0005] The technical solution adopted by the utility model is as follows: a sealed urea heating pipe, comprising: a delivery pipeline, the delivery pipeline is made of EPDM material;

[0006] A quick connector 1, crimped onto one end of the delivery pipeline;

[0007] A second quick connector, crimped to the other end of the delivery pipeline;

[0008] At least two injection-molded sheaths connected to the quick connector 1 and the quick connector 2;

[0009] A heating wire is arranged on the outside of the conveying pipeline, the first quick connector, the second quick connector, and the inside of the injection-molded sheath;

[0010] A conducting wire, arranged at one side of the first quick connector and connected to the heating wire;

[0011] A terminal connected to the other end of the wire;

[0012] The first quick connector, the second quick connector and the delivery pipeline are connected with each other through a compression ring low-pressure injection sealing connection.

[0013] Preferably, it also includes:

[0014] A heat-insulating layer is arranged on the outside of the heating wire;

[0015] A bellows 1, arranged on the outside of the thermal insulation layer;

[0016] The second corrugated tube is arranged on the outside of the wire.

[0017] Preferably, the injection-molded sheath is sealedly connected to the bellows.

[0018] Preferably, there are at least two heating wires, which are spirally wound around the outer sides of the conveying pipeline, the first quick connector, and the second quick connector.

[0019] Beneficial effects of the utility model: Compared with the prior art, the utility model is provided with a delivery pipeline made of EPDM material, which has excellent heat resistance, chemical resistance, aging resistance and electrical insulation, and is elastic, can be bent better, and is convenient for molding and assembly. The pressure rings at both ends of the delivery pipeline are low-pressure injection-molded and sealed to connect the quick connectors. The pressure rings are inserted into the connection part between the quick connector and the EPDM pipe, and the pressure rings shrink to ensure that the quick connector does not leak. Multiple heating wires are not only spirally wound around the outside of the delivery pipeline, quick connector one, and quick connector two, but also arranged inside the injection-molded sheath to ensure that the quick connector part can heat and thaw the urea solution, thereby improving the uniformity and stability of heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of a half-section structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional view of the utility model.

[0023] In the accompanying drawings, the list of components represented by each reference numeral is as follows: delivery pipeline 1, quick connector one 2, quick connector two 3, injection molding sheath 4, heating wire 5, insulation layer 6, bellows one 7, wire 8, terminal 9, bellows two 10, pressure ring 11. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the specification and embodiments, which will enable those skilled in the art to more fully understand the present invention, but will not limit the present invention in any way.

[0025] In order to solve the technical problems existing in the background technology, this embodiment discloses a sealed urea heating pipe, such as Figures 1 to 3As shown, it includes: a delivery pipeline 1 made of EPDM material, a quick connector 1 2 crimped on one end of the delivery pipeline 1, a quick connector 2 3 crimped on the other end of the delivery pipeline 1, two injection molded sleeves 4 connected to the quick connector 1 2 and the quick connector 2 3, and the quick connector 1 2, the quick connector 2 3 are connected to the delivery pipeline 1 by low-pressure injection molding and sealing via a pressure ring 11. The delivery pipeline 1 made of EPDM material has excellent heat resistance, chemical resistance, aging resistance and electrical insulation, and is elastic, can be bent better, and is convenient for molding and assembly. The quick connectors are crimped at both ends of the delivery pipeline 1, and a pressure ring 11 is used to pass through the connection between the quick connector and the EPDM pipe. The pressure ring 11 shrinks to ensure that the quick connector does not leak.

[0026] The heating wire 5 is arranged on the outside of the conveying pipeline 1, the quick connector 1 2, the quick connector 2 3, and the inside of the injection-molded sheath 4 to ensure that the quick connector can heat and thaw the urea solution, thereby improving the uniformity and stability of the heating. The insulation layer 6 is arranged on the outside of the heating wire 5, and the TPV insulation layer 6 is used. TPV usually has a dry and soft touch, has good resilience and impact resistance in a fairly wide temperature range, and can play a protective and heat-insulating role; the bellows 1 7 is arranged on the outside of the insulation layer 6; the wire 8 is arranged on one side of the quick connector 1 2 and connected to the heating wire 5; the terminal 9 is connected to the other end of the wire 8 so that it can be connected to electricity for use; the bellows 2 10 is arranged on the outside of the wire 8.

[0027] In a further embodiment, the injection-molded sheath 4 is sealed and connected to the corrugated tube 7, and the injection-molded sheath 4 is injection-molded onto the pipeline corrugated tube by low-pressure injection molding, thereby ensuring the overall sealing of the urea heating tube.

[0028] In a further embodiment, there are two heating wires 5, which are spirally wound around the outside of the conveying pipeline 1, the quick connector 1 2, and the quick connector 2 3, and are in close contact with the outer wall of the conveying pipeline 1 to ensure uniform heating.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A sealed urea heating tube, characterized in that: include: A delivery pipeline, wherein the delivery pipeline is made of EPDM material; A quick connector 1, crimped onto one end of the delivery pipeline; A second quick connector, crimped to the other end of the delivery pipeline; At least two injection-molded sheaths connected to the quick connector 1 and the quick connector 2; A heating wire is arranged on the outside of the conveying pipeline, the first quick connector, the second quick connector, and the inside of the injection-molded sheath; A conducting wire, arranged at one side of the first quick connector and connected to the heating wire; A terminal connected to the other end of the wire; The first quick connector, the second quick connector and the delivery pipeline are connected with each other through a compression ring low-pressure injection sealing connection.

2. A sealed urea heating pipe according to claim 1, characterized in that: Also includes: A heat-insulating layer is arranged on the outside of the heating wire; A bellows 1, arranged on the outside of the thermal insulation layer; The second corrugated tube is arranged on the outer side of the wire.

3. A sealed urea heating pipe according to claim 2, characterized in that: The injection-molded sheath is sealed and connected to the corrugated tube.

4. A sealed urea heating pipe according to claim 3, characterized in that: There are at least two heating wires, which are spirally wound around the outer sides of the conveying pipeline, the first quick connector, and the second quick connector.

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