Heating protection structure of urea pump filter element

Abstract

The utility model provides a heating protection structure of a urea pump filter element, which is characterized in that a urea pump heating aluminum bar is connected with a shell of a urea pump, and is inserted into a urea pump filter element central pipe when in use; the urea pump filter element upper end cover is connected with a filter material of the urea pump filter element and the urea pump filter element central pipe; the urea pump filter element central pipe is connected with the urea pump filter element upper end cover and the urea pump filter element lower end cover; a boss is arranged on the urea pump filter element lower end cover; the urea pump filter element high-temperature-resistant rubber sleeve is placed on a boss of the urea pump filter element lower end cover in an embedded mode. The urea pump filter element high-temperature-resistant rubber sleeve is installed on the lower portion of the urea pump filter element center pipe. And the urea pump filter element lower end cover is connected with a filter material of the urea pump filter element and the urea pump filter element central pipe. According to the scheme, the problem that a urea pump cannot work in time due to temperature transmission failure caused by surface crystallization and corrosion due to direct contact of a head heating area of the heating aluminum bar with a urea solution is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a urea pump filter element, and in particular to a heating protection structure of a urea pump filter element. Background Art

[0002] Since the SCR system is mostly used in commercial vehicles, the environment in which it is used determines that it will work in some extremely cold environments in winter. The freezing point of urea solution is relatively low. Usually in cold weather, urea solution is easy to freeze. When the vehicle is started, the urea pump needs to thaw the urea solution in advance, and the method is to heat the urea pump heating aluminum rod in the urea pump. However, urea solution is highly corrosive, and it is easy to form crystals on the surface of the urea pump heating aluminum rod after long-term operation, thereby affecting its heating efficiency. Therefore, the head of the urea pump heating aluminum rod needs to be isolated from direct contact with the urea solution. Utility Model Content

[0003] In view of the defects in the prior art, the purpose of the utility model is to provide a heating protection structure for a urea pump filter element.

[0004] The heating protection structure of the urea pump filter element provided by the utility model comprises: a urea pump heating aluminum rod, an upper end cover of the urea pump filter element, a central tube of the urea pump filter element, a high temperature resistant rubber sleeve of the urea pump filter element and a lower end cover of the urea pump filter element;

[0005] The urea pump heating aluminum rod is connected to the housing of the urea pump, and the urea pump heating aluminum rod is inserted into the central tube of the urea pump filter element;

[0006] The upper end cover of the urea pump filter element is connected to the filter material of the urea pump filter element and the central tube of the urea pump filter element;

[0007] The urea pump filter core central tube is connected to the urea pump filter core upper end cover and the urea pump filter core lower end cover;

[0008] A boss is provided on the lower end cover of the urea pump filter element;

[0009] The high temperature resistant rubber sleeve of the urea pump filter element is placed on the boss of the lower end cover of the urea pump filter element by embedding;

[0010] The high temperature resistant rubber sleeve of the urea pump filter element is installed at the lower part of the central tube of the urea pump filter element;

[0011] The lower end cover of the urea pump filter element is connected to the filter material of the urea pump filter element and the central tube of the urea pump filter element.

[0012] Preferably, the upper end cover of the urea pump filter element is bonded to the central tube of the urea pump filter element by infrared welding.

[0013] Preferably, the filter material of the urea pump filter element is a depth filtration non-woven fabric.

[0014] Preferably, the central tube of the urea pump filter element is connected to the upper end cover of the urea pump filter element and the lower end cover of the urea pump filter element by infrared welding.

[0015] Preferably, the lower end cover of the urea pump filter element is bonded to the central tube of the urea pump filter element by infrared welding.

[0016] Preferably, the high temperature resistant rubber sleeve of the urea pump filter element utilizes the circular chamfered concave surface at the top to cooperate with the top chamfer of the urea pump heating aluminum rod to form a supporting surface.

[0017] Preferably, an electrical insulation layer is designed on both the upper end cover of the urea pump filter element and the lower end cover of the urea pump filter element.

[0018] Preferably, the high temperature resistant rubber sleeve of the urea pump filter element is made of a material that is corrosion resistant and resistant to low temperatures down to -40°C.

[0019] Preferably, the material of the central tube of the urea pump filter element is high-strength stainless steel.

[0020] Preferably, the urea pump heating aluminum rod is tightly fitted to the inner wall of the central tube of the urea pump filter element through the precisely machined spiral lines.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model comprises a urea pump heating aluminum rod, an upper end cover of a urea filter element, a central tube of a urea filter element, a lower end cover of a urea filter element, a boss of the urea filter element and high-temperature resistant rubber. The high-temperature resistant rubber sleeve protects the heating aluminum rod, thereby ensuring that the entire heating structure can operate stably for a long time; and solves the problem that the head heating area of ​​the heating aluminum rod directly contacts the urea solution, causing surface crystallization and corrosion, thereby causing temperature transfer failure and making the urea pump unable to work in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the heating protection structure of the urea pump filter element;

[0025] Figure 2 This is a schematic diagram of the heating protection structure of the urea pump filter element;

[0026] Figure numerals: 1-urea pump heating aluminum rod; 2-urea pump filter element upper end cover; 3-urea pump filter element center tube; 4-urea pump filter element high temperature resistant rubber sleeve; 5-urea pump filter element lower end cover; 6-filter material. DETAILED DESCRIPTION

[0027] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0028] Example

[0029] like Figure 1 and Figure 2 The utility model provides a heating protection structure of a urea pump filter element, comprising: a urea pump heating aluminum rod 1, an upper end cover 2 of a urea pump filter element, a central tube 3 of a urea pump filter element, a high temperature resistant rubber sleeve 4 of a urea pump filter element and a lower end cover 5 of a urea pump filter element;

[0030] The urea pump heating aluminum rod 1 is a core component of the urea pump and is usually connected to the housing of the urea pump. During use, the urea pump heating aluminum rod 1 will be inserted into the central tube 3 of the urea pump filter element.

[0031] The urea pump filter element upper end cover 2 is a component of the urea pump filter element, which is connected to the filter material of the urea pump filter element (usually a deep filtration non-woven fabric) and the urea pump filter element center tube 3. The urea pump filter element upper end cover 2 and the urea pump filter element center tube 3 are usually bonded together by infrared welding.

[0032] The central tube 3 of the urea pump filter element is connected to the upper end cover 2 and the lower end cover 5 of the urea pump filter element by infrared welding process. Its main function is to protect the external urea pump filter element filter material from collapse due to the pressure of the urea pump and play a supporting role. The urea pump heating aluminum rod 1 will be inserted into the central tube 3 of the urea pump filter element when working, so that the frozen urea solution can be melted.

[0033] The high temperature resistant rubber sleeve 4 of the urea pump filter is placed on the boss of the lower end cover 5 of the urea pump filter by embedding, and its height needs to be adapted to the length of the urea pump heating aluminum rod 1 so that the heating area of ​​its head is protected.

[0034] The lower end cover 5 of the urea pump filter element is a component of the urea pump filter element, which is connected to the filter material of the urea pump filter element (usually a deep filtration non-woven fabric) and the central tube 3 of the urea pump filter element. The lower end cover 5 of the urea pump filter element and the central tube 3 of the urea pump filter element are usually bonded together by infrared welding.

[0035] The urea pump heating aluminum rod 1 is tightly fitted to the inner wall of the urea pump filter core central tube 3 through the precisely machined spiral lines, so that heat can be evenly transferred during heating to avoid local overheating.

[0036] The high temperature resistant rubber sleeve 4 of the urea pump filter element is made of a special material that is corrosion resistant and resistant to low temperatures down to -40°C, ensuring good sealing and durability in extreme environments, and effectively protecting the urea pump filter element from the influence of the external environment.

[0037] The urea pump filter element upper end cover 2 and the urea pump filter element lower end cover 5 are both designed with an electrical insulation layer, which can not only prevent electrical short circuits, but also enhance the anti-aging performance of the entire structure and improve safety.

[0038] The material of the central tube 3 of the urea pump filter element is high-strength stainless steel, and the inner wall is polished to reduce the adhesion of urea crystals. When used in conjunction with the heated aluminum rod 1, it can effectively prevent the urea solution from crystallizing and clogging the pipeline due to low temperature.

[0039] The heating protection structure integrates an intelligent temperature control system, which monitors the surrounding environment or fluid temperature of the urea pump filter element through a built-in temperature sensor, and automatically adjusts the working state of the urea pump heating aluminum rod 1, thereby ensuring rapid heating to the working temperature in a low temperature environment and avoiding energy waste and safety risks caused by excessive heating.

[0040] Working principle: The urea pump heating aluminum rod 1 is used to melt the frozen urea solution at extremely low temperatures, keep the urea solution in a liquid state, and melt the floating ice and ice residue to prevent the particles from clogging the filter material. The urea pump filter element upper end cover 2 and the urea pump filter element lower end cover 5 are matched with filter materials 6 of different precisions to form a complete filter around the urea pump filter element center tube 3. The urea pump filter element center tube 3 provides internal support for the filter. After the external urea solution passes through the filter to intercept large particles, it passes through the center tube and passes through the filter on the top of the upper end cover to enter the SC R circulation system, the high temperature resistant rubber sleeve 4 of the urea pump filter element is installed at the lower part of the central tube 3, and the circular chamfered concave surface on the top is matched with the top chamfer of the urea pump heating aluminum rod 1 to form a supporting surface, so that the urea pump heating aluminum rod 1 does not touch the surface of the central tube 3 during heating, so as to prevent the central tube from being deformed or burned by high temperature. At the same time, after the upper and lower positioning are completed, the flexible material of the high temperature resistant rubber sleeve 4 of the urea pump filter element can prevent the vibration during the vehicle's travel, which causes noise and other abnormalities due to the friction between the urea pump heating aluminum rod 1 and the central tube 3.

[0041] The utility model designs a structure in which a high temperature resistant rubber sleeve is added to a urea filter element, which perfectly avoids the problem of contact between the urea pump heating aluminum rod 1 and the urea solution. A boss structure is designed on the lower end cover 5 of the injection molded urea pump filter element, and the urea pump filter element high temperature resistant rubber sleeve 4 is installed on the boss, so that the urea pump heating aluminum rod 1 is protected by the high temperature resistant rubber sleeve, thereby avoiding the problems of corrosion and crystallization.

[0042] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A heating protection structure for a urea pump filter element, characterized in that: include: A urea pump heating aluminum rod (1), a urea pump filter element upper end cover (2), a urea pump filter element center tube (3), a urea pump filter element high temperature resistant rubber sleeve (4) and a urea pump filter element lower end cover (5); The urea pump heating aluminum rod (1) is connected to the housing of the urea pump, and the urea pump heating aluminum rod (1) is inserted into the central tube (3) of the urea pump filter element; The urea pump filter element upper end cover (2) is connected to the filter material of the urea pump filter element and the urea pump filter element center tube (3); The urea pump filter core central tube (3) is connected to the urea pump filter core upper end cover (2) and the urea pump filter core lower end cover (5); A boss is provided on the lower end cover (5) of the urea pump filter element; The high temperature resistant rubber sleeve (4) of the urea pump filter element is placed on the boss of the lower end cover (5) of the urea pump filter element by embedding; The high temperature resistant rubber sleeve (4) of the urea pump filter element is installed at the lower part of the central tube (3) of the urea pump filter element; The urea pump filter element lower end cover (5) is connected to the filter material of the urea pump filter element and the urea pump filter element central tube (3).

2. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The urea pump filter element upper end cover (2) is bonded to the urea pump filter element center tube (3) by infrared welding.

3. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The filter material of the urea pump filter element is a deep filtration non-woven fabric.

4. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The urea pump filter core central tube (3) is connected to the urea pump filter core upper end cover (2) and the urea pump filter core lower end cover (5) by infrared welding.

5. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The urea pump filter element lower end cover (5) is bonded to the urea pump filter element central tube (3) by infrared welding.

6. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The high temperature resistant rubber sleeve (4) of the urea pump filter element utilizes the circular chamfered concave surface at the top to cooperate with the chamfered top of the urea pump heating aluminum rod (1) to form a supporting surface.

7. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The urea pump filter element upper end cover (2) and the urea pump filter element lower end cover (5) are both designed with an electrical insulation layer.

8. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The high temperature resistant rubber sleeve (4) of the urea pump filter element is made of a material that is corrosion resistant and can withstand temperatures as low as -40°C.

9. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The material of the urea pump filter core central tube (3) is high-strength stainless steel.

10. The heating protection structure of the urea pump filter element according to claim 1, characterized in that: The urea pump heating aluminum rod (1) is tightly fitted to the inner wall of the urea pump filter core center tube (3) through the precisely machined spiral lines.

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