Heating sheet structure

Abstract

The utility model discloses a heating sheet structure, comprising an application type heating sheet which is provided with a plurality of round holes; the middle of the check ring structure protrudes upwards to be of an arc structure, the periphery of the check ring structure horizontally extends to be of a plane structure, and an open hole is formed in the center of the check ring structure; the bottom of the boss is fixed on the surface of a shell of a to-be-heated component; the circular holes of the application type heating piece penetrate through the bosses in a one-to-one correspondence mode, and the application type heating piece is pressed on the surface of the shell through a check ring structure. According to the utility model, the heating sheet can be completely applied to the outer side surface of the urea pump flow channel, so that the frozen urea water solution can be heated, unfrozen and insulated conveniently; and the shape can be freely designed according to the surface to be applied actually.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, more specifically, the utility model mainly applies to the diesel engine exhaust aftertreatment system on various automobiles, and is mainly applied to the urea pump. BACKGROUND

[0002] With the gradually strengthened environmental protection consciousness of people, the national emission standard requirement of automobile exhaust is more and more strict. In order to meet the strict standard required by the country, automobile and engine manufacturers need to add a set of engine exhaust aftertreatment system in the automobile system. In the whole exhaust aftertreatment system, the urea pump is a key component, and there will be residual urea water solution in the urea pump after working. In the area where the environmental temperature is lower than-11 DEG C, the residual urea water solution will freeze. After the urea pump inside freezes, the flow channel in the urea pump is blocked, and the urea pump cannot work normally again. Therefore, the frozen urea in the pump needs to be thawed, and the urea pump can work normally.

[0003] At present, the heating scheme used by the head enterprises in the industry is that the heating sheet is molded and installed in the urea pump. The main defects of this scheme are uneven heating, not easy to fit, and the manufacturing cost is more than three times of the application. SUMMARY

[0004] The utility model aims at providing a kind of heating sheet structure, ensure that heating sheet can be completely applied to the surface of urea pump flow channel outside, it is convenient to heat thawing and heat preservation to frozen urea water solution;Shape can be freely designed according to the surface of actual need to apply.

[0005] The utility model solves the technical scheme that the technical problem is adopted: a kind of heating sheet structure, comprising:

[0006] The application type heating sheet is provided with a plurality of round holes on it;

[0007] The stop ring structure is upwardly protruding in the middle and is in arc structure, and is horizontally extended in plane structure around, and the center of the stop ring structure has an opening;

[0008] The boss is fixed to the shell surface of the component to be heated at the bottom;The round hole of the application type heating sheet is one-to-one through the boss, and the application type heating sheet is pressed tightly on the shell surface by the stop ring structure.

[0009] As a further scheme of the utility model, the application type heating sheet is sequentially stacked and fixed by bottom aluminum foil layer, heating wire layer, middle aluminum foil layer and heat preservation cotton layer from bottom to top.

[0010] As a further scheme of the utility model, the opening of the stop ring structure is plum-blossom type opening.

[0011] As a further scheme of the utility model is: the blocking ring structure is a metal quincunx blocking ring.

[0012] As a further scheme of the utility model is: the boss is a cylindrical structure, and the minimum aperture of the inner ring of the quincunx blocking ring is equal to or slightly smaller than the outer diameter of the boss.

[0013] The utility model has at least the following beneficial effects: the application adopts the patch type heating sheet and has the advantages of uniform heating, and the cost is lower, but the patch type heating sheet is fixed through screws in the installation process, so that the compression surface is too small, the installation is uneven, and more screws are needed for fixing, the application is used in cooperation with the blocking ring structure and the boss, the flatness of the installation of the patch type heating sheet is guaranteed, and the compression area of a single installation point is improved.

[0014] Other advantages, objects and features of the utility model will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structure schematic view of the heating sheet structure of an embodiment of the utility model;

[0016] Fig. 2 It is the structure schematic view of the patch type heating sheet of the utility model.

[0017] Among them, 1-heating sheet, 2-blocking ring structure, 3-boss, 4-shell, 5-bottom aluminum foil layer, 6-heating wire layer, 7-middle aluminum foil layer, 8-thermal insulation cotton layer. CONCRETE EMBODIMENT

[0018] The utility model will be described in detail and completely in combination with the drawings. Those skilled in the art can realize the utility model based on these descriptions. Before the utility model is described in combination with the drawings, it needs to be pointed out specially: the technical scheme and technical features provided in each part including the following description in the utility model can be combined mutually in the case of no conflict.

[0019] In addition, the embodiments of the utility model involved in the following description are usually only the embodiments of a part of the utility model, not all the embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0020] The utility model will be described in detail and completely in combination with the drawings. Those skilled in the art can realize the utility model based on these descriptions. Before the utility model is described in combination with the drawings, it needs to be pointed out specially: the technical scheme and technical features provided in each part including the following description in the utility model can be combined mutually in the case of no conflict.

[0021] As Figs. 1-2The utility model provides a heating piece structure, including:

[0022] The paste type heating piece 1 is provided with a plurality of round holes, and the round holes are arranged at the fixed point of the paste type heating piece 1;

[0023] The blocking ring structure 2 is upwardly protruded in the middle and is in the circular arc structure, and the periphery is horizontally extended and is in the plane structure, and the center of the blocking ring structure 2 has an opening;

[0024] The boss 3 is fixed to the surface of the urea pump shell 4 at the bottom, the round hole of the paste type heating piece 1 is correspondingly passed through the boss 3, and the paste type heating piece 1 is pressed tightly to the surface of the shell 4 through the blocking ring structure 2, so that the paste type heating piece 1 can be fixed.

[0025] The paste type heating piece 1 has the advantages of uniform heating, and the cost is lower, but in the installation process, the paste type heating piece 1 is fixed through the screw, so that the pressing surface is too small, the installation is not level and needs more screws to fix, the blocking ring structure 2 and the boss 3 are used in cooperation to ensure the flatness of the installation of the paste type heating piece 1, and the pressing area of single installation point is improved.

[0026] The technical scheme can further include the following technical details to better achieve the technical effect: the paste type heating piece 1 is sequentially stacked and fixed by the bottom aluminum foil layer 5, the heating wire layer 6, the middle aluminum foil layer 7 and the thermal insulation cotton layer 8 from bottom to top. When installing, one side of the bottom aluminum foil layer 5 is tightly attached to the shell 4, so that the temperature can be transmitted to the frozen urea water solution through the flow channel wall more quickly, so that the urea water solution can be quickly melted. The thermal insulation cotton layer 8 plays a heat preservation role, reduces the heat diffusion to the outside air, and reduces heat loss.

[0027] The technical scheme can further include the following technical details to better achieve the technical effect: the opening of the blocking ring structure 2 is a keyhole type opening.

[0028] The technical scheme can further include the following technical details to better achieve the technical effect: the blocking ring structure 2 is a metal keyhole blocking ring. The keyhole blocking ring is made of metal. The keyhole blocking ring has a larger pressing area for the heating piece 1 compared with the screw, so that the heating piece 1 is more attached to the surface of the shell 4. Because it has a similar barb structure, when the blocking ring is pressed into the boss 3, the blocking ring is not easy to fall off, so that the heating piece 1 can be effectively attached to the surface of the shell 4 at all times.

[0029] The technical scheme can further include the following technical details to better achieve the technical effect: the boss 3 is in a cylindrical structure, and the minimum aperture of the inner ring of the keyhole blocking ring is equal to or slightly smaller than the outer diameter of the boss 3.

[0030] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the embodiments shown and described herein.

Claims

1. A heating sheet structure, characterized by, The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated.

2. The heater sheet structure of claim 1, wherein, The application relates to a heating device for a shell of a component to be heated.

3. The heater sheet structure of claim 1, wherein, The application relates to a heating device for a shell of a component to be heated.

4. The heater sheet structure of claim 3, wherein, The application relates to a heating device for a shell of a component to be heated.

5. The heater sheet structure of claim 4, wherein, The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be heated. The application relates to a heating device for a shell of a component to be

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