CN213205797U

CN213205797U - Water heating type urea pump assembly

Info

Publication number: CN213205797U
Application number: CN202022000507.0U
Authority: CN
Inventors: 何国裕; 周宗銮; 夏昌勇; 徐谦; 钟方钢; 陈杰
Original assignee: Zhejiang Jinjia Automobile Parts Co ltd
Current assignee: Zhejiang Jinjia Automobile Parts Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-05-14
Anticipated expiration: 2030-09-14

Abstract

The utility model relates to a prevent frozen water heating type urea pump assembly of urea through water heating mode. This kind of water heating type urea pump assembly is including the casing, installs pressure sensor, choke valve, switching-over valve, filter and diaphragm pump in the casing, its characterized in that: an aluminum heat conducting seat is installed at the bottom of the shell, a first concave surface matched with a shell of the filter and a second concave surface matched with a shell of the reversing valve are arranged on the upper surface of the aluminum heat conducting seat, a plastic base is connected to the lower portion of the aluminum heat conducting seat in a sealing mode, a sealing cavity is formed between the plastic base and the aluminum heat conducting seat, and a water inlet interface and a water outlet interface which are communicated with the sealing cavity are formed in the plastic base. The water heating type urea pump assembly can prevent the urea liquid in the assembly from freezing in a water heating mode.

Description

Water heating type urea pump assembly

Technical Field

The utility model relates to a urea pump assembly.

Background

With the improvement of national emission requirements, more and more diesel vehicles need to be additionally provided with an SCR system, and urea is utilized to neutralize oxynitride so as to reduce the pollution of the diesel vehicles to the environment. Because the medium urea has the characteristic of freezing at low temperature, the urea pump assembly also needs to provide the functions of low-temperature heating and the like. At present, a common urea pump assembly is electrically heated, however, the electrical heating is prone to line problems, and circuit faults of the urea pump assembly are caused.

Disclosure of Invention

In view of the deficiencies in the prior art, the utility model discloses the innovation provides a water heating type urea pump assembly that prevents urea freezing through water heating mode.

This kind of water heating type urea pump assembly is including the casing, install pressure sensor, choke valve, switching-over valve, filter and diaphragm pump in the casing, its characterized in that: the filter is characterized in that an aluminum heat conducting seat is mounted at the bottom of the shell, a first concave surface matched with a shell of the filter and a second concave surface matched with a shell of the reversing valve are arranged on the upper surface of the aluminum heat conducting seat, a plastic base is connected to the lower portion of the aluminum heat conducting seat in a sealing mode, a sealing cavity is formed between the plastic base and the aluminum heat conducting seat, and a water inlet interface and a water outlet interface which are communicated with the sealing cavity are arranged on the plastic base.

The upper surface of the plastic base is provided with a first groove and a second groove, the first concave surface of the aluminum heat conducting seat is positioned above the first groove, and the second concave surface of the aluminum heat conducting seat is positioned above the second groove.

The bottom surface of the plastic base is a groove grating surface.

According to the utility model provides a pair of water heating type urea pump assembly, through the mode of water heating, can prevent that the inside urea liquid of assembly from freezing.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the concealed plastic base of FIG. 1;

FIG. 3 is a top view of an aluminum heat conductive base;

fig. 4 is a top view of a plastic base.

Detailed Description

As shown in fig. 1 and 2, the water heating type urea pump assembly includes a housing 1, a pressure sensor, a throttle valve, a reversing valve, a filter 4 and a diaphragm pump are installed in the housing 1, and an aluminum heat conducting base 2 is installed at the bottom of the housing 1, wherein the filter 4 is responsible for filtering, has a large size, contains a large amount of urea liquid inside, and the reversing valve is responsible for reversing the flow direction of urea, has a fine structure, so that the filter and the reversing valve need to work normally. For this purpose, as shown in fig. 3, a first concave 21 matching with the housing of the filter 4 and a second concave 22 matching with the housing of the reversing valve are provided on the upper surface of the aluminum heat conduction seat 2, the first concave 21 of the aluminum heat conduction seat 2 is attached to the housing of the filter 4, the second concave 22 of the aluminum heat conduction seat 2 is attached to the housing of the reversing valve, a plastic base 3 is hermetically connected to the lower portion of the aluminum heat conduction seat 2, a sealed cavity is formed between the plastic base 3 and the aluminum heat conduction seat 2, and a water inlet 33 and a water outlet 34 communicating with the sealed cavity are provided on the plastic base 3.

In operation, hot water enters from the water inlet port 33 and flows into a sealed cavity formed between the plastic base 3 and the aluminum heat conducting seat 2 and then flows out from the water outlet port 34, and the aluminum heat conducting seat 2 takes away heat in the hot water, and because the aluminum heat conducting seat 2 has good heat conductivity and the aluminum heat conducting seat 2 is in direct contact with the reversing valve and the filter 4, the aluminum heat conducting seat 2 can conduct the heat to the reversing valve and the filter 4, thereby preventing urea in the reversing valve, the filter 4 and other components from freezing.

In order to enlarge the space corresponding to the reversing valve and the filter 4 in the sealing cavity to obtain better heating effect, as shown in fig. 4, the utility model discloses have first recess 31 and second recess 32 on plastic base 3's upper surface, the first concave surface 21 of aluminium system heat conduction seat 2 is located first recess 31 top, and the second concave surface 22 of aluminium system heat conduction seat 2 is located second recess 33 top. By this structure, more hot water is in the first groove 21 and the second groove 22, and the space in the sealing chamber corresponding to the reversing valve and the filter 4 is greatly increased, so that the reversing valve and the filter 4 can obtain better heating effect.

Finally, it is worth mentioning that, since the plastic base 3 does not need to conduct heat, in order to prevent the plastic base 3 from overheating, as shown in fig. 1, the bottom surface of the plastic base 3 is a groove grating surface 30, and the groove grating surface 30 not only reduces the weight of the whole base, but also can better realize heat dissipation and prevent the plastic base 3 from overheating.

Claims

1. Water heating type urea pump assembly, including the casing, install pressure sensor, choke valve, switching-over valve, filter and diaphragm pump, its characterized in that in the casing: the filter is characterized in that an aluminum heat conducting seat is mounted at the bottom of the shell, a first concave surface matched with a shell of the filter and a second concave surface matched with a shell of the reversing valve are arranged on the upper surface of the aluminum heat conducting seat, a plastic base is connected to the lower portion of the aluminum heat conducting seat in a sealing mode, a sealing cavity is formed between the plastic base and the aluminum heat conducting seat, and a water inlet interface and a water outlet interface which are communicated with the sealing cavity are arranged on the plastic base.

2. A water heated urea pump assembly as set forth in claim 1, wherein: the upper surface of the plastic base is provided with a first groove and a second groove, the first concave surface of the aluminum heat conducting seat is positioned above the first groove, and the second concave surface of the aluminum heat conducting seat is positioned above the second groove.

3. A water heated urea pump assembly as claimed in claim 1 or claim 2, wherein: the bottom surface of the plastic base is a groove grating surface.