CN208330499U - Urea pump assembly - Google Patents
Urea pump assembly Download PDFInfo
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- CN208330499U CN208330499U CN201820440613.0U CN201820440613U CN208330499U CN 208330499 U CN208330499 U CN 208330499U CN 201820440613 U CN201820440613 U CN 201820440613U CN 208330499 U CN208330499 U CN 208330499U
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- urea
- urea pump
- liquid level
- pump assembly
- level sensor
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Abstract
The utility model relates to a kind of urea pump assemblies, comprising: urea pump unit, the urea pump unit include shell, transfer tube, printed circuit board, urea injection pipe, internal coolant pipeline, main electrical connector；Liquid level sensor assembly；External coolant duct；Urea solution suction line；Wherein, the liquid level sensor assembly is located at the outside of the shell, and is electrically connected with the harness of the enclosure interior.Urea pump assembly according to the present utility model have it is compact-sized, be easily assembled, advantage low in cost.
Description
Technical field
The utility model relates to vehicle maintenance service field more particularly to a kind of urine for tail gas treatment system of diesel engine
Plain pump assembly.
Background technique
Car combustion engine, such as when diesel engine work, nitrogen oxide can be generated with excessive oxygen in most cases
(NOx), to can cause environmental pollution.In order to meet increasingly harsh emission request, the discharge of nitrogen oxide is reduced, handle is needed
NOx in tail gas is reduced into nitrogen and water, usually before tail gas enters catalyst converter, sprays aqueous solution of urea as reducing agent
Into tail gas, the reduction to NOx is realized, this work is specifically to be pumped into exhaust after drawing urea in urea box by urea pump
It is realized in the tail gas of pipeline.
Urea pump currently on the market is divided into the structure of monoblock type and separate type, space needed for the urea pump of monoblock type produces
Greatly, production assembly and management are not easy to；The urea pump of separate type needs additional Assembly interface and components, increases and is produced into
This, does not meet the integrated development trend of Present Attitude.
Summary of the invention
To solve the above-mentioned problems, the utility model provides a kind of compact-sized, and the urea pump of assembly easy to produce is total
At.
Urea pump assembly provided by the utility model includes: urea pump unit, which includes shell, driving
Pump, printed circuit board, urea injection pipe, internal coolant pipeline, main electrical connector；Liquid level sensor assembly；It is external cold
Two ends in but liquid pipe road, the outside coolant duct are connected with the internal coolant pipeline respectively, to realize cold
But liquid first passes through after the internal cooling pipe flows into the external coolant duct and is back to the internal coolant pipeline again
Function；Urea solution suction line, the urea solution suction line are connected with the urea injection pipe of the enclosure interior；Wherein, institute
The outside that liquid level sensor assembly is located at the shell is stated, and is electrically connected with the harness of the enclosure interior.
Preferably, liquid level sensor electrical connection mouth, the liquid level sensor are formed in the first end face of the shell
Assembly is electrically connected by way of grafting with the harness in liquid level sensor electrical connection mouth.
Preferably, the liquid level sensor assembly includes liquid level sensor printed circuit board, for protecting the liquid level to pass
The storage tube of sensor printed circuit board, and it is nested with the float in the storage tube periphery, wherein the liquid level sensor prints
Contact pin is formed on circuit board, which is inserted into the liquid level sensor electrical connection mouth to which the harness internal with it forms electricity
Gas connection.
It preferably, further include quality sensor assembly, the quality sensor assembly is located at the outside of the shell, and with
The harness of the enclosure interior is electrically connected.
Preferably, quality sensor electrical connection mouth, the quality sensor are formed in the first end face of the shell
Assembly is electrically connected by way of grafting with the harness in quality sensor electrical connection mouth.
Preferably, the quality sensor assembly includes quality sensor ontology, quality sensor electrical connector and
The harness being connected respectively with the quality sensor ontology and quality sensor electrical connector, the quality sensor electrically connect
Connector is inserted into the quality sensor electrical connection mouth and is electrically connected to be formed with its internal harness.
It preferably, further include the chuck with multiple cavernous structures, the first end of the storage tube, the external cooling
The first end and the second end in liquid pipe road, the first end of urea suction line, the first end of harness are inserted into respectively right respectively
In the cavernous structure answered.
Preferably, the first end of the storage tube, the first end of the external coolant duct and the second end
It is provided with positioning ring on periphery by welding respectively.
Preferably, the first end of the storage tube, the first end of the external coolant duct and the second end
Gasket is equipped on periphery respectively, the gasket is between the positioning ring and the urea pump unit.
Preferably, gasket is equipped on the periphery of the first end of the urea suction line.
Preferably, the first end of the harness is connected with the quality sensor electrical connector, and the quality passes
Sensor electrical connector is between the chuck and the urea pump unit.
Preferably, it is connected by snap connection means between the chuck and the urea pump unit.
Preferably, the urea pump unit further includes solenoid valve and filter screen.
Compared with prior art, urea pump assembly provided by the utility model has integrated level high, and assembling process is simple, and zero
The few advantage of unit interface, thereby reduces production cost.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.In attached drawing
In:
Fig. 1 is the decomposition explosion figure of urea pump assembly described in the utility model；
Fig. 2 is the front view of urea pump assembly shown in Fig. 1；
Fig. 3 is the bottom view of urea pump unit shown in Fig. 1；
Fig. 4 is the front view of urea pump unit shown in Fig. 3；
Fig. 5 is the stereoscopic schematic diagram of chuck shown in Fig. 1；
Fig. 6 is the top view of chuck shown in Fig. 5；
Fig. 7 is the secondary general assembly schematic diagram in Fig. 1 in addition to urea pump unit；
Fig. 8 is another secondary general assembly schematic diagram in Fig. 1 except urea pump unit；
Fig. 9 is another secondary general assembly schematic diagram in Fig. 1 except urea pump unit.
Specific embodiment
It is described below with reference to accompanying drawings and by embodiment according to urea pump assembly of the utility model.
The major function of urea pump assembly and effect are the information fed back according to control unit of engine (ECU), according to giving
Fixed pressure and flow will cooperate the urea in the urea box being assembled together to be ejected into the gas exhaust piping of engine with it, drop
Low NOx content.
As shown in Figure 1, urea pump assembly described in the utility model includes: urea pump unit 1, liquid level sensor assembly 2,
External coolant duct 3, urea solution suction line 4.As shown in figure 3, the urea pump unit 1 further comprises the outside of the unit
Shell 11, coolant liquid flow into interface 17, and coolant liquid flows out interface 18, urea outlet 19, main electrical connector 10, solenoid valve (figure
In be not shown), filter screen (not shown), and be located at 11 inside of the shell but transfer tube not shown in the figure, print
Printed circuit board, urea injection pipe, internal coolant pipeline.
Wherein, the transfer tube can be preferably gear pump；The printed circuit board is with communication and control function
Controller, major function are to communicate with ECU, and control urea pump assembly and spray urea according to given pressure and flow；It is main
Electrical connector 10 is used to provide electrical and signal to urea pump unit 1 and connect；Solenoid valve is used to control the on-off of coolant liquid；
Main strainer is for the impurity in filter urea, it is ensured that the cleannes of urea in urea pump assembly.
As shown in Fig. 2, the liquid level sensor assembly 2 is located at the outside of the shell 11, and with inside the shell 11
Harness (not shown) form the relationship of electrical connection, after urea pump assembly and urea box assemble, the level sensing
Device assembly 2 will be inserted into urea box, so as to pass through the liquid level signal in the urea box measured in the shell 11
Harness pass to control unit of engine.
As shown in Fig. 2, the urea solution suction line 4 is located at the outside of the shell 11, and with inside the shell 11
Urea injection pipe is connected, and after urea pump assembly and urea box assembly, the urea solution suction line 4 will be inserted into urea box
In, so as to which urea is extracted from urea box by gear pump, and according to certain pressure by the urea pump unit 1
The urea injection pipe in portion is transported to urea outlet 19.
The coolant liquid flows into interface 17 and is connected to (figure with the internal coolant pipeline respectively with coolant liquid outflow interface 18
In be not shown)；In addition, as depicted in figs. 1 and 2, the external coolant duct 3 is the structure similar to spiral wound,
Have there are two end, respectively external coolant duct first end 31 and external coolant duct the second end 32, the two
End is also connected with the internal coolant pipeline respectively, to realize under urea pump assembly working condition, through coolant liquid
The engine coolant that interface 17 enters is flowed into return again after the internal cooling pipe flows into the external coolant duct
It is flow to the internal coolant pipeline, most flows out urea pump assembly through coolant liquid outflow interface 18 afterwards, function and effect are pair
Urea in the urea pump unit 1 and in urea box is heated, and to prevent urea from crystalline polamer occur, (urea is subzero 11
It will appear crystalline polamer below degree).
As a preferred embodiment, as depicted in figs. 1 and 2, the urea pump assembly further comprises quality sensor
Assembly 5, the quality sensor assembly 5 are located at the outside of the shell 11, and (in figure not with the harness inside the shell 11
Show) relationship being electrically connected is formed, after urea pump assembly and urea box assembly, the quality sensor assembly 5 will insertion
In urea box, so as to which the urea quality signal in the urea box measured is passed to hair by the harness in the shell 11
Motivation control unit.
As a preferred embodiment, as shown in figures 1 and 3, the shell 11 has first end face 111, the first end
Be formed on face 111 liquid level sensor electrical connection mouth 15, the liquid level sensor assembly 2 can by way of grafting with should
Liquid level sensor is electrically connected the harness in mouth 15 and realizes that electrical connection, such as one end of liquid level sensor assembly 2 can design
At male connector, liquid level sensor electrical connection mouth 15 can be designed to that female, the two form the plug structure of connector, carry out signal
Transmitting.
As a preferred embodiment, as shown in Figure 1, the liquid level sensor assembly 2 includes such as lower component: level sensing
Device printed circuit board 21；For protecting the storage tube 22 of the liquid level sensor printed circuit board 21；And it is nested with and is deposited described
The float 23 of storage 22 periphery of pipe, clearance fit between the float 23 and the storage tube 22, and as urea box urea level is high
The variation of degree is floated under 22 guiding role of storage tube；Contact pin is formed on the liquid level sensor printed circuit board 21
211, which is inserted into the liquid level sensor electrical connection mouth 15 and is electrically connected to be formed with its internal harness,
At this point, the contact pin 211 constitutes the male connector of connector, the liquid level sensor electrical connection mouth 15 is the female of connector, two
After person patches, the signal that induction can be obtained 23 height change of float by the liquid level sensor printed circuit board 21 is transmitted
To ECU.
As a preferred embodiment, as shown in figures 1 and 3, quality is formed in the first end face 111 of the shell 11
Sensor is electrically connected mouth 16, and the quality sensor assembly 5 can electrically be connected by way of grafting with the quality sensor
Harness in interface 16 realizes that electrical connection, such as one end of quality sensor assembly 5 can be designed to female, quality sensor
Electrical connection mouth 16 can be designed to that male connector, the two form the plug structure of connector, carry out signal transmitting.
As a preferred embodiment, as shown in Figure 1, the quality sensor assembly 5 includes such as lower component: for detecting
The quality sensor ontology 51 of urea liquid quality concentration (such as being detected based on ultrasonic transmission rate), quality sensor is electrical
Connector 53 and the harness 52 being connected respectively with the quality sensor ontology 51 and quality sensor electrical connector 53,
The quality sensor electrical connector 53 is inserted into the quality sensor electrical connection mouth 16 to which the harness internal with it is formed
Electrical connection, at this point, the quality sensor electrical connector 53 constitutes the female of connector, the quality sensor electrically connects
Interface 16 can be designed to male connector, and after the two patches, the urea quality signal that the quality sensor ontology 51 measures passes through
The connector transmitting that linear speed 52 and the quality sensor electrical connector 53 and quality sensor electrical connection mouth 16 are constituted
To ECU.
As a preferred embodiment, as shown in Figures 1 to 9, in order to which all components are kept a metastable shape
State and position (being unlikely to fall off from the urea pump unit 1), the urea pump assembly further include with multiple cavernous structures
61 chuck 6, the first end 221 of the storage tube 22, the external coolant duct first end 31 and the second end 32,
The first end 41 of urea suction line 4, the first end 521 of harness 52 are inserted into multiple corresponding cavernous structures 61 respectively
In.
As a preferred embodiment, the first end 221 of the storage tube 22, the external coolant duct first
Positioning ring 7 is provided with by welding respectively on end 31 and the periphery of the second end 32, to prevent them from described
It falls off on chuck 6.
As a preferred embodiment, in order to adjust the gap between the corresponding interface of urea pump unit with
And realize effectively sealing, the first end 221 of the storage tube 22, the external coolant duct first end 31 and second end
Portion 32, the urea suction line 4 first end 41 periphery on be equipped with gasket 8 and O-ring respectively, the gasket 8 is located at
Between the positioning ring 7 and the O-ring, the O-ring is between the gasket 8 and the urea pump unit 1.
As a preferred embodiment, the first end 521 of the harness 52 and the quality sensor electrical connector
53 are connected, and the quality sensor electrical connector 53 is between the chuck 6 and the urea pump unit 1.
As a preferred embodiment, in order to enable the stronger stabilization of each components assembly, the chuck 6 and the urine
It can be connected by snap connection means between plain pump unit 1, it is specific as shown in Figures 4 to 6, it is formed on the chuck 6
There is buckle structure 62, notch 9 is formed on the shell 11, buckle structure 62 and notch 9 are coupled, so that institute
Stating chuck 6 and other pipe fittings can be firmly installed in the urea pump unit 1.
Although the utility model has been disclosed in the preferred embodiments as above, the utility model is not limited to this.Any
Field technical staff, made various changes and modification, should all be included in this without departing from the spirit and scope of the utility model
In the protection scope of utility model, therefore the protection scope of the utility model should be defined by the scope defined by the claims..
Claims (13)
1. urea pump assembly characterized by comprising
Urea pump unit (1), the urea pump unit (1) include shell (11), transfer tube, printed circuit board, urea injection pipe,
Internal coolant pipeline, main electrical connector；
Liquid level sensor assembly (2)；
External coolant duct (3), two ends of the outside coolant duct (3) respectively with the internal coolant pipeline phase
Connection, thus realize coolant liquid first pass through the internal cooling pipe flow into after the external coolant duct be back to again it is described
The function of internal coolant pipeline；
Urea solution suction line (4), the urea solution suction line (4) the urea injection pipe internal with the shell (11) are connected；
Wherein, the liquid level sensor assembly (2) is located at the outside of the shell (11), and the line internal with the shell (11)
Beam electrical connection.
2. urea pump assembly according to claim 1, which is characterized in that in the first end face (111) of the shell (11)
It is formed with liquid level sensor electrical connection mouth (15), the liquid level sensor assembly (2) is passed by way of grafting with the liquid level
Sensor is electrically connected the harness electrical connection in mouth (15).
3. urea pump assembly according to claim 2, which is characterized in that the liquid level sensor assembly (2) includes liquid level
Sensor pcb (21), for protecting the storage tube (22) of the liquid level sensor printed circuit board (21), Yi Jitao
The float (23) in the storage tube (22) periphery is set, wherein being formed with contact pin on the liquid level sensor printed circuit board (21)
(211), which is inserted into liquid level sensor electrical connection mouth (15) and electrically connects to which the harness internal with it is formed
It connects.
4. according to claim 1, urea pump assembly described in 2 or 3, which is characterized in that it further include quality sensor assembly (5),
The quality sensor assembly (5) is located at the outside of the shell (11), and the harness internal with the shell (11) electrically connects
It connects.
5. urea pump assembly according to claim 4, which is characterized in that in the first end face (111) of the shell (11)
It is formed with quality sensor electrical connection mouth (16), the quality sensor assembly (5) is passed by way of grafting with the quality
Sensor is electrically connected the harness electrical connection in mouth (16).
6. urea pump assembly according to claim 5, which is characterized in that the quality sensor assembly (5) includes quality
Sensor body (51), quality sensor electrical connector (53) and respectively with the quality sensor ontology (51) and quality
The harness (52) that sensor electrical connector (53) is connected, the quality sensor electrical connector (53) are inserted into the quality and pass
Sensor is electrically connected mouth (16) and is electrically connected to be formed with its internal harness.
7. urea pump assembly according to claim 6, which is characterized in that further include the card with multiple cavernous structures (61)
Disk (6), the first end (221) of the storage tube (22), the external coolant duct (3) first end (31) and second
End (32), the first end (41) of urea suction line (4), the first end (521) of harness (52) are inserted into respective corresponding respectively
The cavernous structure (61) in.
8. urea pump assembly according to claim 7, which is characterized in that the first end (221) of the storage tube (22),
It is set by welding respectively on the first end (31) of the external coolant duct (3) and the periphery of the second end (32)
It is equipped with positioning ring (7).
9. urea pump assembly according to claim 8, which is characterized in that the first end (221) of the storage tube (22),
It is equipped with gasket (8), institute respectively on the first end (31) of the external coolant duct (3) and the periphery of the second end (32)
Gasket (8) are stated between the positioning ring (7) and the urea pump unit (1).
10. urea pump assembly according to claim 7, which is characterized in that the first end of the urea suction line (4)
(41) gasket (8) are equipped on periphery.
11. urea pump assembly according to claim 7, which is characterized in that the first end (521) of the harness (52) with
The quality sensor electrical connector (53) is connected, and the quality sensor electrical connector (53) is located at the chuck
(6) between the urea pump unit (1).
12. urea pump assembly according to claim 7, which is characterized in that the chuck (6) and the urea pump unit
(1) it is connected by snap connection means between.
13. urea pump assembly according to claim 1, which is characterized in that the urea pump unit (1) further includes solenoid valve
And filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440613.0U CN208330499U (en) | 2018-03-28 | 2018-03-28 | Urea pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440613.0U CN208330499U (en) | 2018-03-28 | 2018-03-28 | Urea pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208330499U true CN208330499U (en) | 2019-01-04 |
Family
ID=64783897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820440613.0U Active CN208330499U (en) | 2018-03-28 | 2018-03-28 | Urea pump assembly |
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| CN (1) | CN208330499U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682422A (en) * | 2019-01-19 | 2019-04-26 | 合肥杰思环保科技有限公司 | A kind of urea sensor installing ultrasonic probe additional |
| CN109975495A (en) * | 2019-04-30 | 2019-07-05 | 凯龙高科技股份有限公司 | A kind of integrated form urea level temperature quality sensor |
| CN109973188A (en) * | 2019-04-30 | 2019-07-05 | 凯龙高科技股份有限公司 | A kind of air auxiliary urea pump of integrated urea level temperature sensor |
| CN113530645A (en) * | 2020-04-17 | 2021-10-22 | 泰科电子(上海)有限公司 | Urea case sensor assembly |
| CN113639086A (en) * | 2021-08-06 | 2021-11-12 | 武冈市永锐电子科技有限公司 | Wire harness integrated urea pump system |
-
2018
- 2018-03-28 CN CN201820440613.0U patent/CN208330499U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682422A (en) * | 2019-01-19 | 2019-04-26 | 合肥杰思环保科技有限公司 | A kind of urea sensor installing ultrasonic probe additional |
| CN109975495A (en) * | 2019-04-30 | 2019-07-05 | 凯龙高科技股份有限公司 | A kind of integrated form urea level temperature quality sensor |
| CN109973188A (en) * | 2019-04-30 | 2019-07-05 | 凯龙高科技股份有限公司 | A kind of air auxiliary urea pump of integrated urea level temperature sensor |
| CN113530645A (en) * | 2020-04-17 | 2021-10-22 | 泰科电子(上海)有限公司 | Urea case sensor assembly |
| CN113530645B (en) * | 2020-04-17 | 2022-09-30 | 泰科电子(上海)有限公司 | Urea tank sensor assembly |
| CN113639086A (en) * | 2021-08-06 | 2021-11-12 | 武冈市永锐电子科技有限公司 | Wire harness integrated urea pump system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 241009 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 27 North Road Patentee after: WeiPai automotive electronics (Wuhu) Co., Ltd Address before: 241009 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 27 North Road Patentee before: Continental Automotive GmbH |
|
| CP01 | Change in the name or title of a patent holder |