CN103016338A - Pump structure for urea SCR system - Google Patents
Pump structure for urea SCR system Download PDFInfo
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- CN103016338A CN103016338A CN2011104435526A CN201110443552A CN103016338A CN 103016338 A CN103016338 A CN 103016338A CN 2011104435526 A CN2011104435526 A CN 2011104435526A CN 201110443552 A CN201110443552 A CN 201110443552A CN 103016338 A CN103016338 A CN 103016338A
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- China
- Prior art keywords
- pump
- scr system
- urea scr
- pump unit
- used urea
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/10—Fluid working
- F04C2210/1083—Urea
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a pump structure for a urea SCR system and discloses a pump unit for a urea SCR system. A pump unit for a urea-SCR system may use a fuel pump of a vehicle engine and may have a case portion surrounding a motor portion and a pump portion. The motor portion may include a barrier wall surrounding a rotator so as to separate the rotator from a stator of the motor portion, and the pump portion includes a shield in which a suction hole and a supply hole for fluid are formed and that is disposed between the pump portion and the motor portion so as to prevent fluid from leaking into the motor portion, so the motor is protected from the urea solution to prevent corrosion thereof, manufacturing cost is reduced, and noise caused by the vibration is reduced.
Description
Cross reference with related application
The application requires preference and the interests of the korean patent application submitted on September 20th, 2011 10-2011-0094788 number, and the full content of above-mentioned application is incorporated into this and is used for this all purposes of quoting.
Technical field
The present invention relates to a kind of pump structure for used urea SCR system, and more particularly, the present invention relates to a kind of like this pump structure for used urea SCR system, it can prevent the leakage of urea liquid effectively, thereby protects its motor part.
Background technique
Type according to vehicle, vehicle can be divided into passenger car, bus and truck, and according to the type of employed fuel, the LPG vehicle that they can be further divided into the gasoline vehicle that uses gasoline, the diesel vehicle that uses diesel oil and use liquefied petroleum gas (LPG).
Compare with petrol engine, diesel engine combustion fuel and produce a large amount of NOx as harmful matter under the condition of oxygen surplus, and under diesel engine simple condition, be difficult to reduce NOx.Therefore, as the method for removing NOx, urea selective catalytic reduction (urea-SCR) system is the technology of the most actively researching and developing.
Used urea SCR system is to exhausting air pipeline supply urea (NH
2-CO-NH
2) solution, thereby urea liquid is converted into NH by the decomposition of the exhausting air of high temperature
3And HNCO, thereby and the water decomposition that is discharged in the gas of HNCO be converted into ammonia and CO
2The ammonia that produces as mentioned above is used for by catalytic reaction NOx being converted to N
2+ O
2
Used urea SCR system comprises the sparger that sprays urea liquid, urea liquid is fed to the pump of sparger from urea tank, and the CPU of control jet pressure and discharge time.
Be difficult to utilize and supply urea liquid such as the Fuel Petroleum pump of using in the common vehicle motor and the such pump of diesel fuel pump.This is because urea liquid is that pH value is the strong alkali solution of 9-11, thereby it has very strong corrosion ability, the most of metal of urea liquid corrosion except the SUS material.When common petrolift was used to the pumping urea liquid, therefore the pump corrosion can break down after 4 to 6 hours.
Therefore, as shown in Figure 1, used special-purpose urea supply pump to get rid of the etching problem in the conventional art.That is, the pump part 2 of urea supply pump is arranged in the case tank 4, motor part 1 be arranged in the case tank outside and with the outer wall of case tank separately, thereby described pump rotates by magnetic coupling 3 and prevents the pump corrosion, described magnetic coupling 3 at an upper portion thereof/bottom has a plurality of magnets.
Yet, because common petrolift can not use as described above, therefore just need independent urea pump, thereby cost increase, and the magnetic coupling that particularly needs to use costliness has as shown in Figure 1 so just further increased cost to prevent urea supply pump corrosion, and also has a problem to be, owing to having adopted the labyrinth of magnetic coupling, therefore having produced operation noise.
The information that is disclosed in this background of invention technology part only is intended to deepen the understanding to general background technique of the present invention, and should not be regarded as admitting or hint that in any form this information structure has been prior art known in those skilled in the art.
Summary of the invention
All aspects of of the present invention provide a kind of pump structure for used urea SCR system, and its advantage is to have utilized the petrolift that uses in vehicle motor, thereby save manufacturing cost, reduce noise, and prevent simultaneously because the corrosion that urea liquid causes.
In All aspects of of the present invention, provide a kind of pump structure for used urea SCR system with as the device that is used for addressing the above problem.According to All aspects of of the present invention, the pump unit that is used for used urea SCR system uses the petrolift of vehicle motor, and it has the housing parts that surrounds motor part and pump part; Wherein, described motor part is divided and is comprised the barrier rib that surrounds solid of rotation, thereby the stator of this solid of rotation and described motor part is separated; And described pump partly comprises guard shield, is formed with inlet hole and supply orifice for liquid in described pump part, and described guard shield is arranged between described pump part and described motor part divide, thereby prevents that leak of liquid is in described motor part.
Described barrier rib can be made by the anticorrosive that comprises the SUS material.
Described pump part can be comprised of in inscribed gear pump, circumscribed gear pump and the Gerotor pump.
Can be formed with center hole in the described guard shield, and the axle of described petrolift passes this center hole, thereby be connected to described motor part.
Can be furnished with bearing between described axle and the described center hole and between described axle and the described barrier rib.
Can be furnished with O shape circle between described bearing and the described guard shield, thereby prevent the leakage of liquid.
Described housing parts can comprise main casing and upper shell, and this main casing surrounds the side surface of described motor part and described pump part, and this upper shell covers the top of described motor part.
Described barrier rib and described main casing can integrally form.
Described barrier rib can have cylindrical shape, the closed upper part of wherein said barrier rib and the bottom of described barrier rib place is formed with flange, and wherein said barrier rib engages with end sections along the circle of the inner circumference formation of described main casing by described flange.
The upper surface place of described end sections can be formed with groove, thereby prevents that liquid from leaking between described end sections and described flange, and is inserted with O shape circle in this groove.
Described motor part can be brushless direct current (BLDC) motor.
Described pump unit for used urea SCR system further comprises outer cover, and this outer cover surrounds the excircle of described solid of rotation, thereby prevents described solid of rotation corrosion.
Described outer cover can form by Overmolded plastic materials.
According to the pump structure for used urea SCR system of the present invention, the most of parts that are used for the pump of vehicle motor can be used, thereby minimizing manufacturing cost, no longer need the sort of independently complicated structure in the conventional art for example, and the present invention has also and makes because the effect that the pulsation of liquid and noise that vibration causes reduce.
And guard shield partly separates pump part and motor, and inlet hole and supply orifice both are formed in the pump part, therefore has effect and is: the urea liquid of used urea SCR system can not flow into motor partly in, thereby having prevented that motor part from dividing corrodes.
In addition; suppose that urea liquid leaks by guard shield; the barrier rib that separates by the solid of rotation with stator and motor part is protected avoids corrosion, and the outer cover of the encirclement solid of rotation excircle that is formed by the plastic overmold moulding has protected solid of rotation to avoid being subject to the impact of urea liquid.
By the accompanying drawing of including this paper in and the embodiment that is used from subsequently explanation some principle of the present invention with accompanying drawing one, the further feature that method and apparatus of the present invention has and advantage will become clear or more specifically be illustrated.
Description of drawings
Fig. 1 is the figure that has shown according to the urea supply pump structure of conventional art.
Fig. 2 is the exploded perspective view according to the pump structure for exemplary used urea SCR system of the present invention.
Fig. 3 is the sectional view according to the pump structure for exemplary used urea SCR system of the present invention.
Fig. 4 is the figure that has shown according to the example process for covering the solid of rotation excircle of the present invention.
Fig. 5 is that wherein barrier rib and main casing integrally form according to the sectional view of exemplary pump structure of the present invention.
Fig. 6 is for the exploded perspective view according to the pump structure of the exemplary used urea SCR system that has adopted Gerotor pump (gerotor pump) of the present invention.
Embodiment
To at length make each mode of execution of the present invention now and quoting, the example of these mode of executions is shown in the accompanying drawings and is described below.Although the present invention will combine with illustrative embodiments and be described, should recognize, this specification is not to be intended to limit the invention to those illustrative embodiments.On the contrary, the present invention is intended to not only cover these illustrative embodiments, and covers various selection forms, modification, the equivalent form of value and other mode of execution that can be included within the spirit and scope of the present invention that limited by claims.
As shown in Figure 2, the pump structure of the used urea SCR system of each mode of execution uses the petrolift of vehicle motor according to the present invention, and the petrolift of this vehicle motor comprises motor part 100, pump part 200 and housing parts 300.In illustrated illustrative embodiments, motor part 100 comprises axle 110, solid of rotation 120, stator 130 and barrier rib 140, and pump part 200 comprises inlet hole 210, supply orifice 220 and guard shield 230, and housing parts 300 comprises main casing 310 and upper shell 320.
As shown in Figure 2, according to each mode of execution of the present invention, the structure of motor part 100 can be used brush-less Dc motor (BLDC) motor that uses in the common vehicle motor.
As a rule, the BLDC motor comprises axle 110, solid of rotation 120 and stator 130, and this solid of rotation 120 engages with the excircle of axle 110, and this stator 130 produces induction electromotive force so that solid of rotation 120 rotations.Solid of rotation 120 rotatably is arranged on the stator 130 and is interval in stator 130.
As shown in Figure 2, solid of rotation 120 comprises rotor (for example iron coil) 121 and permanent magnet 122, and this rotor 121 is fixed on the excircle of axle 110, and this permanent magnet 122 is arranged in inboard or the outside of rotor 121; Stator 130 comprises coil 131 and stator core body 132, and this coil 131 produces induction electromotive force, and this stator core body 132 is inserted in the coil 131.And insulator 133A and 133B are arranged in the place, upper and lower of stator 130, thus isolated electric current or heat.
In the motor part 100 of each mode of execution according to the present invention, solid of rotation 120 separates certain space by barrier rib 140 with stator 130.
As shown in Figure 2, barrier rib 140 surrounds solid of rotation 120, thereby the solid of rotation 120 of motor part 100 and the stator 130 of motor part 100 are separated.
Flow in the motor although have some urea liquids when urea liquid is pumped in used urea SCR system so that solid of rotation 120 can be subject to the impact of urea liquid because the existence of barrier rib 140 and so that stator 130 can not be affected.By barrier rib 140, so that be protected and avoid the urea liquid impact as the coil 131 of primary element in the motor, the stator 130 that comprises stator core body 132, electric wire and electrode.
Therefore, barrier rib 140 will be made by etch-proof material, and in each mode of execution, this material can be made by the SUS material.
The shape of barrier rib 140 can form various shapes, but as shown in Figures 2 and 3, barrier rib according to each mode of execution has cylindrical shape, wherein, the closed upper part of this cylinder, place, the bottom of this cylinder is formed with flange 141, and this flange 141 engages with end sections 311 along the inner circumference formation of main casing 310 by bolt 142.
And; as shown in Figure 2, groove 311a is formed on the upper surface place of end sections 311, and O shape circle 20a is inserted among this groove 311a; thereby liquid can not leaked between end sections 311 and flange 141, thereby protection stator 130 is not subject to the impact of urea liquid.
In such configuration, when urea liquid flow into the motor part 100 from 200 leakages of pump part, stator 130 was protected, and only has solid of rotation 120 to be affected.
The outer cover 123 of being made by the SUS material can be set, thereby prevent solid of rotation 120 corrosions that cause owing to urea liquid.
Outer cover 123 has cylindrical shape, and its upper and lower is closed to surround the excircle of solid of rotation 120, and wherein, outer cover 123 is made by Overmolded (over-molding) plastic materials, thereby prevents solid of rotation 120 corrosions.
Fig. 4 has shown the formation flow process of the outer cover 123 of solid of rotation 120, and wherein, axle 110 engages with the rotor 121 of solid of rotation 120, and permanent magnet 122 is inserted in the outer cover 123, thereby upper surface is covered the excircle that surrounds solid of rotation 120 by outer cover 123.In each mode of execution, as shown in Figure 4, magnet 122 can be the SPM type that is attached to the outside of rotor 121, and if magnet 122 be to be inserted into IPM type in the rotor 121, outer cover 123 is formed on the excircle of solid of rotation 120 so.
Simultaneously, according to each mode of execution, as shown in Figure 5, barrier rib 140 integrally forms with main casing 310.Be understandable that, barrier rib can form with main casing.When barrier rib integrally formed, the flange 141 of barrier rib 140 no longer was to engage with the end sections 311 of main casing 310 by bolt 142, but integrally forms with end sections 311.Therefore, compare with the situation that main casing 310 engages by bolt 142 with the barrier rib 140 shown in Fig. 2, this has the effect that prevents that urea liquid from leaking.
Simultaneously, as shown in Figure 3, more suitably bearing 10a is arranged between solid of rotation 120 and the barrier rib 140, thereby solid of rotation 120 can be rotated effectively.
The pump that is used for the common vehicle motor can be used as pump part 200 and uses.But, be used for the pump of petrolic impeller type and be not suitable for full-bodied urea liquid, therefore, adopt revolving pump to be fit to.Inscribed gear pump (inscribed gear pump), circumscribed gear pump (circumscribed gear pump) or Gerotor pump (gerotor pump) can be used as revolving pump and use.
Fig. 2 has shown the situation of using gear pump 240 according to each mode of execution, and Fig. 6 shown the situation of using Gerotor pump 240 rather than gear pump, and wherein the structure of other structure and Fig. 2 is similar.
According to each mode of execution of the present invention, pump part 200 comprises for the inlet hole 210 of liquid and supply orifice 220.These are different from the fuel pump structure that is used for vehicle motor, but in the situation that adopts the petrolift that be used for vehicle motor similar to common BLDC pump, because the fuel that the fuel sucting by its underpart is inhaled into is pumped by the rotation of pump, thereby and be supplied to its motor part and be discharged by fuel draining section, if such pump structure is used in used urea SCR system like this, its problem is, during the pumping urea liquid, can corrosion by the motor of copper or steel making.Therefore, liquid inlet hole 210 and supply orifice 220 are formed in the pump part 200 that is arranged in the motor part 100, thereby address the above problem in the present invention.According to each mode of execution, as shown in Figure 2, the urea liquid that sucks by inlet hole 210 also divides 100 without motor part, discharging by supply orifice 220, thereby makes the 100 protected impacts that are not subjected to urea liquid of motor part.
Fig. 2 has shown that the pump 240 at each mode of execution according to the present invention is in the situation of gear pump type, liquid inlet hole 210 and supply orifice 220 form together, and Fig. 6 has shown that the pump 240 at each mode of execution according to the present invention is that liquid inlet hole 210 and supply orifice 220 form together in the situation of Gerotor pump.
And as shown in Figure 2, in the pump part 200 of each mode of execution according to the present invention, guard shield 230 is arranged between pump part 200 and the motor part 100, thereby prevents that leak of liquid is in motor part 100.
The axle 110 that pump part 200 is connected with motor part 100 is passed in the center hole that forms in the guard shield 230, so liquid can leak between center hole and axle 110.Therefore, as shown in Figure 2, each mode of execution according to the present invention, bearing 10b are arranged between the center hole of axle 110 and guard shield 230, thereby liquid (for example urea liquid) can not be leaked in the motor part 100 that is arranged in upside.Compatibly, guard shield 230 is made by the SUS material that is not subject to the urea liquid corrosion.
And such as Fig. 2 or shown in Figure 3, O shape circle 20b is arranged between bearing 10b and the guard shield 230, thereby improves the effect that prevents that urea liquid from leaking, and O shape circle 20c is arranged in the bottom of guard shield 230, thereby prevents the leak of liquid of pump part 200.
As shown in Figure 2, housing parts 300 comprises main casing 310 and upper shell 320, this main casing 310 surrounds the side surface of motor part 100 and pump part 200, this upper shell 320 covers the top of motor part 100, and as shown in Figure 3, main casing 310 and upper shell 320 or main casing 310 and pump part 200 engage by compression or another kind of assembling means.
Because the pump structure that is used for used urea SCR system of the present invention as implied above can use most of parts of the pump of vehicle motor, so cost decreases, complicated structure also no longer is essential, and since the pulsation of liquid and the noise that vibration causes can reduce.
In addition, by guard shield 230 pump part 200 and motor part 100 are separated, and liquid inlet hole 210 and supply orifice 220 both form in pump part 200, thereby make the urea liquid of used urea SCR system can not flow into motor part 100, and then have prevented motor part 100 corrosions.
And; even leakage has occured by guard shield 230 in urea liquid; stator 130 also can be protected to avoid corrosion by barrier rib 140 (this barrier rib 140 separates the stator 130 of solid of rotation 120 with motor part 100); and solid of rotation 120 has outer cover 123 (this outer cover 123 is by the Overmolded excircle that surrounds solid of rotation 120 of plastic materials), thereby its urea liquid that is protected to avoid being leaked is affected.
For the ease of in claims, explaining and explication, term " on " or D score, " interior " or " outward " etc. position of being used for the feature of reference illustrative embodiments shown in the figure come these features are described.
The front is for the purpose of illustration and description to the description that the concrete illustrative embodiments of the present invention presents.The description of front does not want to become milli exhaustively, neither want the present invention is restricted to disclosed precise forms, and obviously, all be possible according to a lot of changes of above-mentioned instruction and variation.Selecting illustrative embodiments and being described is in order to explain certain principles of the present invention and practical application thereof, thereby so that others skilled in the art can realize and utilize various illustrative embodiments of the present invention and various selection form and modification.Scope of the present invention is intended to be limited by appended claims and equivalents thereof.
Claims (14)
1. pump unit that is used for used urea SCR system, it uses the petrolift of vehicle motor, and described pump unit comprises:
Housing parts, this housing parts surround motor part and pump part;
Wherein, described motor part is divided and is comprised the barrier rib that surrounds solid of rotation, thereby the stator of this solid of rotation and described motor part is separated; And
Described pump partly comprises guard shield, is formed with inlet hole and supply orifice for liquid in described pump part, and described guard shield is arranged between described pump part and described motor part divide, thereby prevents that leak of liquid is in described motor part.
2. the pump unit for used urea SCR system according to claim 1, wherein said barrier rib is made by anticorrosive.
3. the pump unit for used urea SCR system according to claim 1, wherein said pump part forms by one in inscribed gear pump, circumscribed gear pump and the Gerotor pump.
4. the pump unit for used urea SCR system according to claim 1 is formed with center hole in the wherein said guard shield, and the axle of described petrolift passes this center hole, thereby is connected to described motor part.
5. the pump unit for used urea SCR system according to claim 4 is furnished with bearing between wherein said axle and the described center hole and between described axle and the described barrier rib.
6. the pump unit for used urea SCR system according to claim 5 is furnished with O shape circle, to prevent the leakage of liquid between wherein said bearing and the described guard shield.
7. the pump unit for used urea SCR system according to claim 1, wherein said housing parts comprises main casing and upper shell, and this main casing surrounds the side surface of described motor part and described pump part, and this upper shell covers described motor top partly.
8. the pump unit for used urea SCR system according to claim 7, wherein said barrier rib and described main casing integrally form.
9. the pump unit for used urea SCR system according to claim 7, wherein said barrier rib has cylindrical shape, the closed upper part of wherein said barrier rib and the bottom of described barrier rib place is formed with flange, and wherein said barrier rib engages with end sections along the circle of the inner circumference formation of described main casing by described flange.
10. the pump unit for used urea SCR system according to claim 9, the upper surface place of wherein said end sections is formed with groove, thereby prevents that liquid from leaking between described end sections and described flange, and is inserted with O shape circle in this groove.
11. the pump unit for used urea SCR system according to claim 1, wherein said motor part is divided into brushless DC motor.
12. the pump unit for used urea SCR system according to claim 1 further comprises outer cover, this outer cover surrounds the excircle of described solid of rotation, thereby prevents described solid of rotation corrosion.
13. the pump unit for used urea SCR system according to claim 12, wherein said outer cover forms by Overmolded plastic materials.
14. the pump unit for used urea SCR system according to claim 2, wherein said anticorrosive is the SUS material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0094788 | 2011-09-20 | ||
| KR1020110094788A KR101220393B1 (en) | 2011-09-20 | 2011-09-20 | Pump structure for urea scr system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103016338A true CN103016338A (en) | 2013-04-03 |
Family
ID=47750994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104435526A Pending CN103016338A (en) | 2011-09-20 | 2011-12-27 | Pump structure for urea SCR system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130071268A1 (en) |
| KR (1) | KR101220393B1 (en) |
| CN (1) | CN103016338A (en) |
| DE (1) | DE102011057082A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373177A (en) * | 2013-08-13 | 2015-02-25 | 现代自动车株式会社 | Urea solution pumping module |
| CN108331644A (en) * | 2017-01-20 | 2018-07-27 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| WO2018171213A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Exhaust gas after-treatment system |
| WO2018171214A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Exhaust gas after-treatment system |
| WO2018171217A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Integrated device, exhaust gas after-treatment system, and control method |
| CN108625940A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| CN108625939A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
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| CN104373177A (en) * | 2013-08-13 | 2015-02-25 | 现代自动车株式会社 | Urea solution pumping module |
| CN108884713A (en) * | 2016-02-22 | 2018-11-23 | 吉凯恩粉末冶金工程有限公司 | Pump assembly with axial flux electric drive |
| CN108884713B (en) * | 2016-02-22 | 2021-06-22 | 吉凯恩粉末冶金工程有限公司 | Pump assembly with axial flux electric drive |
| CN108331644A (en) * | 2017-01-20 | 2018-07-27 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| CN108331644B (en) * | 2017-01-20 | 2023-10-13 | 天纳克（苏州）排放系统有限公司 | Integrated device, exhaust gas aftertreatment system and control method |
| WO2018171214A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Exhaust gas after-treatment system |
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| CN108625938A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| CN108625939A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| CN108625942A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | exhaust gas aftertreatment system |
| CN108625937A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | exhaust gas aftertreatment system |
| CN108625940A (en) * | 2017-03-20 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Integrating device, exhaust gas aftertreatment system and control method |
| WO2018171217A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Integrated device, exhaust gas after-treatment system, and control method |
| WO2018171213A1 (en) * | 2017-03-20 | 2018-09-27 | 天纳克（苏州）排放系统有限公司 | Exhaust gas after-treatment system |
| TWI740017B (en) * | 2017-05-18 | 2021-09-21 | 日商笹倉機械工程股份有限公司 | Corrosion protection method of roots blower |
| CN113518854A (en) * | 2019-05-31 | 2021-10-19 | 全耐塑料高级创新研究公司 | Fixing device for fixing a dispensing module of an aqueous solution contained in an on-board tank |
| US11852065B2 (en) | 2019-05-31 | 2023-12-26 | Plastic Omnium Advanced Innovation And Research | Attachment device for a module for dispensing an aqueous solution contained in a tank on board a motor vehicle |
| CN113518854B (en) * | 2019-05-31 | 2024-02-02 | 全耐塑料高级创新研究公司 | Device for fastening a dispensing module for an aqueous solution contained in a vehicle tank |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101220393B1 (en) | 2013-01-09 |
| DE102011057082A1 (en) | 2013-03-21 |
| US20130071268A1 (en) | 2013-03-21 |
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Application publication date: 20130403 |