CN201666238U - Plunger piston type metering spraying pump for emission reduction system - Google Patents
Plunger piston type metering spraying pump for emission reduction system Download PDFInfo
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- CN201666238U CN201666238U CN2010201445673U CN201020144567U CN201666238U CN 201666238 U CN201666238 U CN 201666238U CN 2010201445673 U CN2010201445673 U CN 2010201445673U CN 201020144567 U CN201020144567 U CN 201020144567U CN 201666238 U CN201666238 U CN 201666238U
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Abstract
The utility model relates to a plunger piston type metering spraying pump for an emission reduction system, which comprises a casing, a pump body, an elastic separation element, a plunger sleeve and a plunger piston, wherein a first cavity and a second cavity which are communicated through an oil passing hole is arranged in the casing, the pump body is arranged in the casing and is communicated with the first cavity, the elastic separation element is arranged in the first cavity for separating the first cavity and the second cavity into an oil storage cavity and a pump liquid cavity, the pump liquid cavity is positioned between the elastic separation element and the pump body, the plunger sleeve is arranged in the second cavity, in addition, the inside of the plunger sleeve is communicated with the oil passing hole, the side wall of the plunger sleeve is also provided with a metering hole communicated with the second cavity, and the plunger piston is glidingly inserted and arranged in the plunger sleeve, and is used for doing reciprocating movement under the external force effect. Preferably, the elastic separation element is a diaphragm, and seals the oil passing hole or the pump body, and the plunger piston realizes the reciprocating movement through electromagnetic force. The utility model has the advantages of ingenious design, simple structure, low cost and good reliability, can precisely meter the urea spraying, has simple control, and is applicable to large-scale popularization and application.
Description
Technical field
The utility model relates to Vehicular exhaust post-processing purifying system technical field, and particularly diesel oil tail gas post-processing purifying system for vehicle injection of reducing agent injection device technical field specifically is meant a kind of emission-reducing system plunger type metered injection pump.
Background technique
Similar diesel oil tail gas post-processing purifying system for vehicle injection of reducing agent injection device application technology is arranged at present both at home and abroad, as Chinese patent application CN200480025239.9, its disclosed a kind of used for diesel engine in order to carry the particularly pump of urea-water solution of waste gas post-processing medium.This pump has a pump casing, settles a pumping element in pump casing, utilizes this pumping element that medium is sent to outlet from a reservoir vessel.In order to make waste gas post-processing medium can properly and obtain reliably carrying under the various conditions that occur on the diesel vehicle, pumping element is a piston, and this piston can overcome a reaction force and move, and separates mutually with medium by a barrier film.
Because the piston that Chinese patent application CN200480025239.9 discloses directly is connected with barrier film, this pumping element can only play the effect of fed sheet of a media, because the each motion emitted dose of this structure is relatively large, thereby can not play the effect of accurate measurement.The general Micro Controller Unit (MCU) driving stepper motor that adopts of the metering of urea liquid and injection drives the diaphragm pump realization.The stepper motor working in reciprocating mode relies on calculated step motor rotation angle control additive injection amount, causes like this in order to guarantee higher measuring accuracy to make control section very complicated, and product price is high; In case and control section does not reach the necessary control precision after simplifying.
Therefore, but the expectation provide a kind of accurate measurement urea-spray simple in structure, control simple and lower-cost metered injection device.
The model utility content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, and a kind of emission-reducing system plunger type metered injection pump is provided, and this metered injection pump design is ingenious, simple in structure, with low cost, good reliability, but accurate measurement urea-spray and control are simple, are suitable for large-scale promotion application.
To achieve these goals, emission-reducing system of the present utility model plunger type metered injection pump, comprise the housing and the pump housing, be provided with first cavity and second cavity that are communicated with by oil through in the described housing, the described pump housing is arranged on and is communicated with described first cavity in the described housing, be characterized in, described emission-reducing system also comprises the elasticity dividing element with plunger type metered injection pump, plunger bushing and plunger, described elasticity dividing element is arranged in described first cavity described first cavity and described second cavity is separated into shoe cream room and pump sap cavity, described pump sap cavity is between the described elasticity dividing element and the described pump housing, described plunger bushing is installed in described second cavity and the described oil through of internal communication, described plunger bushing sidewall also is provided with the measuring hole that is communicated with described second cavity, and described plunger slidably is plugged in and is used in the described plunger bushing under external force in described plunger bushing to-and-fro motion.
Preferably, described elasticity dividing element seals up the described oil through or the described pump housing.
Preferably, described elasticity dividing element is a barrier film.
Preferably, be provided with fluid one-way valve and feed liquor one-way valve in the described pump housing, described feed liquor one-way valve is communicated with described fluid one-way valve.
Preferably, described emission-reducing system also comprises elastic element, magnetic core and electromagnetic coil with plunger type metered injection pump, described electromagnetic coil is installed in described second cavity, described magnetic core is arranged in the described electromagnetic coil and connects described plunger, and described elastic element two ends are respectively against described plunger bushing and described plunger or described magnetic core.
More preferably, described elastic element is a spring.
More preferably, described emission-reducing system also comprises solenoid housing and coil top cover with plunger type metered injection pump, described coil top cover and described solenoid housing are installed in described second cavity and form receiving cavity between the two, and described electromagnetic coil is installed in the described receiving cavity.
Further, described coil top cover middle part is provided with the movable chamber of magnetic core, and described magnetic core is arranged in the movable chamber of described magnetic core.
Further, described solenoid housing is installed on the described plunger bushing, and described coil top cover is installed on the inwall of described second cavity.
Preferably, described housing comprises end cap, and described end cap is provided with pressuring film plate, and described pressuring film plate is communicated with described second cavity.
The beneficial effects of the utility model are specific as follows:
1, the utility model is provided with measuring hole on plunger bushing, when pump sap cavity direction moved, hydraulic oil moved to pump sap cavity direction by oil through at plunger, and the elasticity dividing element moves to the pump housing under pressure, utilize the measuring hole on the plunger bushing that hydraulic oil is carried out accurate measurement, thereby the urea-spray to the pump sap cavity carries out accurate measurement, designs ingenious, simple in structure, with low cost, good reliability, but accurate measurement urea-spray and control are simple, are suitable for large-scale promotion application.
2, plunger of the present utility model can be realized to-and-fro motion by electromagnetic force, specifically under the electromagnetic coil effect, drive by magnetic core, the urea-spray amount is further controlled by the adjusting drive motion frequency of power frequency, design ingenious, simple in structure, with low cost, good reliability, but accurate measurement urea-spray and control are simple, are suitable for large-scale promotion application.
3, the hydraulic oil in the shoe cream room of the present utility model can also cool off (because the electromagnetic coil continuous firing can be generated heat electromagnetic coil as cooling liquid, overheated meeting damage equipment), improved durability and reliability, cost is cheaper, has filled up the blank in domestic this field.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1, emission-reducing system of the present utility model plunger type metered injection pump, comprise housing 1, the pump housing 2, elasticity dividing element 3, plunger bushing 4 and plunger 5, be provided with first cavity 7 and second cavity 8 that are communicated with by oil through 6 in the described housing 1, the described pump housing 2 is arranged on and is communicated with described first cavity 7 in the described housing 1, described elasticity dividing element 3 is arranged in described first cavity 7 described first cavity 7 and described second cavity 8 is separated into shoe cream room 9 and pump sap cavity 10, described pump sap cavity 10 is between the described elasticity dividing element 3 and the described pump housing 2, described plunger bushing 4 is installed in described second cavity 8 and the described oil through 6 of internal communication, described plunger bushing 4 sidewalls also are provided with the measuring hole 11 that is communicated with described second cavity 8, and described plunger 5 slidably is plugged in and is used in the described plunger bushing 4 under external force in described plunger bushing 4 to-and-fro motion.In specific embodiment of the utility model, in the shoe cream room 9 hydraulic oil, in the pump sap cavity 10 urea liquid, elasticity dividing element 3 is separated hydraulic oil and urea liquid.
Preferably, described elasticity dividing element 3 seals up the described oil through 6 or the described pump housing 2.In specific embodiment of the utility model, described elasticity dividing element 3 seals up the described pump housing 2.
Described elasticity dividing element 3 can be any elastically-deformable material that takes place under flow of fluid.In specific embodiment of the utility model, described elasticity dividing element 3 is barrier films.Barrier film adopts resistant material to make, and can improve the decay resistance of the pump housing 2 greatly.
In specific embodiment of the utility model, be provided with fluid one-way valve 12 and feed liquor one-way valve 13 in the described pump housing 2, described feed liquor one-way valve 13 is communicated with described fluid one-way valve 12.See also shown in Figure 1ly, arrow is represented the urea solution flows direction.
Preferably, described emission-reducing system also comprises elastic element 14, magnetic core 15 and electromagnetic coil 16 with plunger type metered injection pump, described electromagnetic coil 16 is installed in described second cavity 8, described magnetic core 15 is arranged in the described electromagnetic coil 16 and connects described plunger 5, and described elastic element 14 two ends are respectively against described plunger bushing 4 and described plunger 5 or described magnetic core 15.In specific embodiment of the utility model, described elastic element 14 is springs, and the two ends of spring are respectively against described plunger bushing 4 and described plunger 5.
More preferably, described emission-reducing system also comprises solenoid housing 17 and coil top cover 18 with plunger type metered injection pump, described coil top cover 18 and described solenoid housing 17 are installed in described second cavity 8 and form receiving cavity 19 between the two, and described electromagnetic coil 16 is installed in the described receiving cavity 19.
In specific embodiment of the utility model, described coil top cover 18 middle parts are provided with the movable chamber 20 of magnetic core, and described magnetic core 15 is arranged in the movable chamber 20 of described magnetic core.
In specific embodiment of the utility model, described solenoid housing 17 is installed on the described plunger bushing 4, and described coil top cover 18 is installed on the inwall of described second cavity 8.
In specific embodiment of the utility model, described housing 1 comprises end cap 21, and described end cap 21 is provided with pressuring film plate 22, and described pressuring film plate 22 is communicated with described second cavity 8.
After electromagnetic coil 16 energisings, magnetic core 15 to 10 motions of pump sap cavity, drives plunger 5 to 10 motions of pump sap cavity simultaneously under the electromagnetic force effect; After plunger 5 leading portions passed through measuring hole 11, plunger 5, plunger bushing 4, housing 1, oil through 6 and barrier film formed sealed cavity; Plunger 5 continues to move right, and by oil through 6 hydraulic oil is pushed first cavity 7 of housing 1, and barrier film moves right under pressure, and the liquid in the pump sap cavity 10 is discharged from the pump housing 2 by fluid one-way valve 12; Saturating pressuring film plate 22 keeps internal and external pressure balance; After electromagnetic coil 16 outages, plunger 5 resets to second cavity 8 under the effect of spring, hydraulic oil pressure release in the oil through 6, barrier film resets under elastic reaction simultaneously, barrier film produces pump-absorb action by two one-way valves (fluid one-way valve 12 and feed liquor one-way valve 13), liquid (urea liquid) suction pump sap cavity 10, and effective fluid partitioning and mechanical part, decay resistance improved; Electromagnetic coil 16 reciprocal power on/off, plunger 5 to-and-fro motion drive the barrier film to-and-fro motion, and liquid is constantly sucked and extrude the pump housing 2, supply with exhaust after treatment system.
To sum up, emission-reducing system of the present utility model is ingenious, simple in structure, with low cost with the design of plunger type metered injection pump, good reliability, but accurate measurement urea-spray and control are simple, are suitable for large-scale promotion application.。
In this specification, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. an emission-reducing system is with plunger type metered injection pump, comprise the housing and the pump housing, be provided with first cavity and second cavity that are communicated with by oil through in the described housing, the described pump housing is arranged on and is communicated with described first cavity in the described housing, it is characterized in that, described emission-reducing system also comprises the elasticity dividing element with plunger type metered injection pump, plunger bushing and plunger, described elasticity dividing element is arranged in described first cavity described first cavity and described second cavity is separated into shoe cream room and pump sap cavity, described pump sap cavity is between the described elasticity dividing element and the described pump housing, described plunger bushing is installed in described second cavity and the described oil through of internal communication, described plunger bushing sidewall also is provided with the measuring hole that is communicated with described second cavity, and described plunger slidably is plugged in and is used in the described plunger bushing under external force in described plunger bushing to-and-fro motion.
2. emission-reducing system according to claim 1 is characterized in that with plunger type metered injection pump described elasticity dividing element seals up the described oil through or the described pump housing.
3. emission-reducing system according to claim 1 is characterized in that with plunger type metered injection pump described elasticity dividing element is a barrier film.
4. emission-reducing system according to claim 1 is characterized in that with plunger type metered injection pump be provided with fluid one-way valve and feed liquor one-way valve in the described pump housing, described feed liquor one-way valve is communicated with described fluid one-way valve.
5. emission-reducing system according to claim 1 plunger type metered injection pump, it is characterized in that, described emission-reducing system also comprises elastic element, magnetic core and electromagnetic coil with plunger type metered injection pump, described electromagnetic coil is installed in described second cavity, described magnetic core is arranged in the described electromagnetic coil and connects described plunger, and described elastic element two ends are respectively against described plunger bushing and described plunger or described magnetic core.
6. emission-reducing system according to claim 5 is characterized in that with plunger type metered injection pump described elastic element is a spring.
7. emission-reducing system according to claim 5 plunger type metered injection pump, it is characterized in that, described emission-reducing system also comprises solenoid housing and coil top cover with plunger type metered injection pump, described coil top cover and described solenoid housing are installed in described second cavity and form receiving cavity between the two, and described electromagnetic coil is installed in the described receiving cavity.
8. emission-reducing system according to claim 7 is characterized in that with plunger type metered injection pump described coil top cover middle part is provided with the movable chamber of magnetic core, and described magnetic core is arranged in the movable chamber of described magnetic core.
9. emission-reducing system according to claim 7 is characterized in that with plunger type metered injection pump described solenoid housing is installed on the described plunger bushing, and described coil top cover is installed on the inwall of described second cavity.
10. emission-reducing system according to claim 1 is characterized in that with plunger type metered injection pump described housing comprises end cap, and described end cap is provided with pressuring film plate, and described pressuring film plate is communicated with described second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201445673U CN201666238U (en) | 2010-03-30 | 2010-03-30 | Plunger piston type metering spraying pump for emission reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201445673U CN201666238U (en) | 2010-03-30 | 2010-03-30 | Plunger piston type metering spraying pump for emission reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666238U true CN201666238U (en) | 2010-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201445673U Expired - Lifetime CN201666238U (en) | 2010-03-30 | 2010-03-30 | Plunger piston type metering spraying pump for emission reduction system |
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| CN (1) | CN201666238U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062070A (en) * | 2010-03-30 | 2011-05-18 | 苏州派格力减排系统有限公司 | Plunger type metering ejector pump for emission reduction system |
| CN102213167A (en) * | 2011-05-04 | 2011-10-12 | 北京航空航天大学 | Liquid measure ejector and spraying control method thereof |
| CN103291590A (en) * | 2013-06-13 | 2013-09-11 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-diaphragm pump |
-
2010
- 2010-03-30 CN CN2010201445673U patent/CN201666238U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062070A (en) * | 2010-03-30 | 2011-05-18 | 苏州派格力减排系统有限公司 | Plunger type metering ejector pump for emission reduction system |
| CN102062070B (en) * | 2010-03-30 | 2012-11-07 | 苏州派格力减排系统有限公司 | Plunger type metering ejector pump for emission reduction system |
| CN102213167A (en) * | 2011-05-04 | 2011-10-12 | 北京航空航天大学 | Liquid measure ejector and spraying control method thereof |
| CN103291590A (en) * | 2013-06-13 | 2013-09-11 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-diaphragm pump |
| CN103291590B (en) * | 2013-06-13 | 2015-06-24 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Double-diaphragm pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 215211 Wujiang City, Jiangsu province FENHU Economic Development Zone, the community Fen Road No. 666 Patentee after: Suzhou PowerGreen Emission Solution System Co., Ltd. Address before: 215212 Wujiang City, Jiangsu province FENHU Economic Development Zone Lili town Xinyang Road No. 1966 Patentee before: Suzhou PowerGreen Emission Solution System Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101208 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |