CN206987916U - Integrating device and exhaust gas aftertreatment system - Google Patents

Abstract

A kind of integrating device of pump and nozzle, it includes pump group part and nozzle assembly.Pump group part is provided with host cavity, pump group part housing and the pump for housing nozzle assembly.The pump group part housing includes access road and exit passageway, and the exit passageway connects with the nozzle assembly.The pump group part includes case, driving the motor coil of the pump, magnetic and intermeshing first gear component and second gear component.The motor coil is interference fitted in case cavity.The nozzle assembly includes nozzle assembly housing and the nozzle.The nozzle assembly also includes to drive the nozzle coil of the nozzle, wherein the motor coil is independently controlled respectively with the nozzle coil.Integrating device of the present utility model is simple in construction, compact, and control is accurate higher.In addition, the utility model further relates to a kind of exhaust gas aftertreatment system.

Description

Integrating device and exhaust gas aftertreatment system

Technical field

A kind of integrating device and exhaust gas aftertreatment system are the utility model is related to, belongs to motor exhaust post-processing technology Field.

Background technology

It is more and more tighter with the discharge standard of internal-combustion engines vehicle, in order to reduce the harmful substance such as oxynitrides in exhaust, The post-processing technology of industry generally use is SCR at present（SCR）, and install in SCR upstream and sprayed into exhaust Penetrate urea liquid.Hydrolysis occurs for urea liquid, pyrolysis produces ammonia, and is chemically reacted with oxynitrides etc., and then drops The concentration of low harmful substance.

Urea injection system in the market generally includes air assist system and non-air accessory system.Certainly, nothing By which kind of system include urea box assembly, be connected by low pressure pipeline with the urea box assembly pump feed unit, pass through The nozzle module and controller that pressure piping is connected with pump feed unit.Pump feed unit includes urea pump and pressure passes Sensor etc., nozzle module is including urea nozzle etc..Urea pump and urea nozzle interval larger distance, and pass through urea tube phase Even.In addition, existing urea injection system includes more parts, installation is complicated, and cost is higher.

Therefore, need badly and a kind of new technical scheme is provided.

Utility model content

The purpose of this utility model is to provide a kind of more accurate integrating device of control ratio and exhaust gas aftertreatment system.

To achieve the above object, the utility model adopts the following technical scheme that：

A kind of integrating device of pump and nozzle, wherein the pump to the nozzle pump fluid media (medium), the nozzle To spray the fluid media (medium) in the exhaust to engine, the integrating device includes pump group part and nozzle assembly；The pump Component includes pump group part housing and the pump being engaged with the pump group part housing, and the pump group part housing includes being located at institute The access road stating the upstream of pump and connected with the pump and lead to positioned at the downstream of the pump and with the outlet that the pump connects Road, the exit passageway connect with the nozzle assembly, and the pump group part housing includes case and below the case The first housing, the case is provided with case cavity, and the access road is located in the first shell body；The pump group part includes To drive the motor coil of the pump, the magnetic to be interacted with the motor coil and intermeshing first gear Component and second gear component, wherein the motor coil is interference fitted in the case cavity, the first gear component Including first gear axle and first gear, the second gear component includes second gear axle and second gear, and described One gear is intermeshed with the second gear；The nozzle assembly include nozzle assembly housing and with the nozzle assembly shell The nozzle of mates, the nozzle assembly also includes to drive the nozzle coil of the nozzle, wherein the motor Coil is independently controlled respectively with the nozzle coil.

As the further improved technical scheme of the utility model, the pump is urea pump, and the nozzle is urea nozzle, The fluid media (medium) is urea liquid.

As the further improved technical scheme of the utility model, the pump is petrolift, and the nozzle is fuel nozzle, The fluid media (medium) is fuel.

As the further improved technical scheme of the utility model, the integrating device include with the motor coil and The controller of the nozzle coil connection, the controller carry out independent control to the urea pump and the urea nozzle respectively System.

As the further improved technical scheme of the utility model, the integrating device includes connecting with the exit passageway Pressure sensor and the overflow element that is connected between the exit passageway and the access road.

As the further improved technical scheme of the utility model, the integrating device includes being arranged on the pump group part shell Internal temperature sensor.

As the further improved technical scheme of the utility model, the pump group part includes housing the metal of the magnetic Cover, the motor coil are socketed in the periphery of the metal cap；The first gear axle is driving shaft, and the second gear axle is Driven shaft, the first gear axle are higher than the second gear axle.

As the further improved technical scheme of the utility model, the pump group part also includes being housed in the metal cap And the elastomer below the magnetic, the elastomer can be compressed to absorb because of expansion caused by urea icing Volume.

As the further improved technical scheme of the utility model, the pump group part housing, which is provided with, houses the first gear With the gear grooved of the second gear, the first gear and the second gear external toothing, the side of the gear grooved is provided with With the admission chamber of the inlet passage, the opposite side of the gear grooved is provided with goes out sap cavity with what the exit passageway connected.

As the further improved technical scheme of the utility model, the nozzle assembly includes mutual with the nozzle coil The magnetic portion of effect, the needle portion below the magnetic portion, the bullet acted between the magnetic portion and the needle portion Spring and the valve seat coordinated with the needle portion.

As the further improved technical scheme of the utility model, the nozzle coil is located at the periphery of the magnetic portion, The needle portion is provided with needle, and the valve seat is provided with the spray-hole being engaged with the needle.

As the further improved technical scheme of the utility model, the valve seat includes being welded on the nozzle assembly housing On spinning disk, the spray-hole is arranged on the spinning disk, and the spinning disk is additionally provided with and connected with the spray-hole Some eddy flow grooves.

As the further improved technical scheme of the utility model, the integrating device is provided with to cool down the urea spray The cooling component of mouth, the cooling component are cooled down by cooling medium to the urea nozzle.

As the further improved technical scheme of the utility model, the controller is provided with control panel, the motor coil Be electrically connected with the nozzle coil with the control panel, the case be provided with the through hole that is connected with the case cavity and The waterproof and breathable lid being fixed in the through hole；Thread plug is welded with the control panel, the thread plug is exposed to institute State outside case.

As the further improved technical scheme of the utility model, the case is carried out with first housing by bolt Connection, the pump group part housing is provided with to be passed through and to support the support column of the control panel for the bolt.

As the further improved technical scheme of the utility model, the pump group part housing is provided with and the first shell body phase The connection board component of cooperation, the connection board component include plate portion and are fixed on the gold in the plate portion and to raise up Category cover, the magnetic are housed in the metal cap, and the motor coil is socketed in the periphery of the metal cap, the plate Portion is fixed on first housing by some screws.

As the further improved technical scheme of the utility model, first housing is included under the first upper surface, first Surface and first side, wherein first upper surface is provided with first annular groove, surrounded by the first annular groove first Island portion and the first sealing ring being housed in the first annular groove, first sealing ring are located under the metal cap Side, the plate portion compresses downwards first sealing ring；First island portion be provided with through first upper surface with it is described First positioning hole of the first lower surface and the second positioning hole through first lower surface, the urea pump include being housed in The first axle sleeve in first positioning hole and the second axle sleeve being housed in second positioning hole, wherein first tooth Wheel shaft is inserted in first axle sleeve, and the second gear axle is inserted in second axle sleeve.

As the further improved technical scheme of the utility model, first lower surface is communicated with first positioning Hole and the first drain charge groove of second positioning hole.

As the further improved technical scheme of the utility model, first island portion also includes running through first upper table Face and the first guiding gutter for being connected with second positioning hole and through first upper surface and with inlet passage First connecting hole；First housing be provided with through first lower surface and the second connecting hole for being connected with the admission chamber with And through first lower surface and with it is described go out the outlet opening that connects of sap cavity.

As the further improved technical scheme of the utility model, first housing is additionally provided with downward through described first The host cavity of lower surface, the host cavity is housing at least part of nozzle assembly.

As the further improved technical scheme of the utility model, first upper surface is additionally provided with positioned at first island The side in portion and to house the pressure sensor accepting hole of pressure sensor, the host cavity houses with the pressure sensor Hole connects.

As the further improved technical scheme of the utility model, first housing is provided with and the outlet opening thereof Overflow element accepting groove, the integrating device are provided with the overflow element being installed in the overflow element accepting groove；When outlet is logical When the pressure in road is higher than setting value, the overflow element is opened so that part urea liquid is returned in the access road.

As the further improved technical scheme of the utility model, the pump group part housing includes being located at first housing Lower section and the second housing for being connected with first housing, second housing include the second upper surface and the second following table Face, the gear grooved is through second upper surface and the second lower surface.

As the further improved technical scheme of the utility model, the pump group part housing includes being located at second housing Lower section and the 3rd housing that is connected with second housing, the 3rd housing include body and from the body to The lug boss of lower extension, wherein the body is provided with the 3rd upper surface, the 3rd upper surface be provided with the 3rd annular groove and The 3rd island portion surrounded by the 3rd annular groove, the 3rd island portion are provided with the 3rd positioning hole through the 3rd upper surface And the 4th positioning hole, the 3rd positioning hole are extended into the lug boss with the 4th positioning hole；The urea pump bag Include the 3rd axle sleeve being housed in the 3rd positioning hole and the 4th axle sleeve being housed in the 4th positioning hole, wherein institute State first gear axle to insert in the 3rd axle sleeve, the second gear axle is inserted in the 4th axle sleeve.

As the further improved technical scheme of the utility model, the 3rd island portion, which is provided with, runs through the 3rd upper surface The second guiding gutter and the 3rd guiding gutter, wherein second guiding gutter connects with the 3rd positioning hole, the described 3rd leads Chute connects with the 4th positioning hole.

As the further improved technical scheme of the utility model, the nozzle assembly housing includes main part and from institute The extension that main part extends downwardly is stated, the main part is provided with the accommodating chamber for housing the urea nozzle and housed described convex The groove in the portion of rising, the accommodating chamber are extended down into the extension.

As the further improved technical scheme of the utility model, the pump group part housing leads to the nozzle assembly housing Some fixing bolts are crossed to be fixed together from bottom to top.

As the further improved technical scheme of the utility model, the nozzle assembly includes mutual with the nozzle coil The magnetic portion of effect, the needle portion being connected with the magnetic portion and the spring for acting on the needle portion；The extension is set There is the manifold connected with the accommodating chamber, wherein magnetic portion protrusion second upper surface is partially housed in the receipts In cavity volume.

As the further improved technical scheme of the utility model, the spring is arranged on the magnetic portion and the needle In portion, the needle portion is provided with tapered portion and the needle extended downwardly from the tapered portion, the needle extend into the collection Flow in chamber, the magnetic portion is provided with the first intercommunicating pore connected with the accommodating chamber, and the needle portion is provided with to be connected with described first Second intercommunicating pore of through hole connection, the tapered portion are provided with the third connecting for connecting second intercommunicating pore with the manifold Hole.

As the further improved technical scheme of the utility model, the nozzle assembly includes the valve that the needle is engaged Seat, the valve seat include the spinning disk being welded on the extension, and the spinning disk is provided with the spray being engaged with the needle Perforation and some eddy flow grooves connected with the spray-hole, the eddy flow groove connect with the manifold.

As the further improved technical scheme of the utility model, the nozzle assembly housing be provided with the first cooling duct, The second cooling duct spaced with first cooling duct and the end cap for being sealed in the extension periphery, the spray Nozzle assembly housing forms between the end cap and the extension connects first cooling duct and the described second cooling The annular cooling bath of passage, first cooling duct are connected with inlet attack with so that engine coolant injects, and described Two cooling ducts are connected with outlet connection with so that engine coolant flows out.

The utility model further discloses following technical scheme：

A kind of exhaust gas aftertreatment system, including the spraying system of exhaust aftertreatment and the package system of exhaust aftertreatment, Wherein described spraying system includes foregoing integrating device, and the package system includes the load positioned at the integrating device downstream Body.

As the further improved technical scheme of the utility model, the carrier includes SCR, the envelope Dress system also includes at least one blender between the integrating device and the carrier.

Compared to prior art, pump and nozzle are integrated in one by the integrating device of the utility model pump and nozzle well Rise, it is simple in construction, compact, it is very easy to the installation of client.In addition, by entering respectively to motor coil and nozzle coil Row independent control, so as to avoid interfering between pump and nozzle, improve the accuracy of control.Integrated in integrating device Urea pump with the basis of urea nozzle, due to the raising of control accuracy, the amount and nitrogen of the urea that can be sparged into exhaust Oxygen compound reaches suitable ratio, reduce because of excessive injection urea and caused by crystallize risk.In addition, by by motor lines Circle is interference fitted in case cavity, is reduced the quantity of part, is easy to both assemblings.

Brief description of the drawings

Fig. 1 is that exhaust gas aftertreatment system of the present utility model applies schematic diagram when handling motor exhaust.

Fig. 2 is the schematic diagram of integrating device in Fig. 1.

Fig. 3 is the schematic perspective view of integrating device of the present utility model in one embodiment.

Fig. 4 is the schematic perspective view of another angles of Fig. 3.

Fig. 5 is the schematic perspective view of the another angles of Fig. 3.

Fig. 6 is Fig. 3 front view.

Fig. 7 is Fig. 3 right view.

Fig. 8 is Fig. 5 upward view.

Fig. 9 is Fig. 5 top view.

Figure 10 is the part isometric exploded view of the utility model integrating device, and wherein pump group part separates with nozzle assembly Come.

Figure 11 is the part isometric exploded view of pump group part in Figure 10, wherein case, motor coil and waterproof and breathable lid quilt Separate.

Figure 12 is the schematic perspective view that case fits together with motor coil in Figure 11.

Figure 13 is Figure 12 three-dimensional exploded view.

Figure 14 is the further three-dimensional exploded views of Figure 11, and wherein control panel is separated.

Figure 15 is to remove the three-dimensional exploded view after the case and control panel in Figure 14, wherein connection board component is separated Come.

Figure 16 is the stereogram that board component is connected in Figure 15.

Figure 17 is the three-dimensional exploded view that board component is connected in Figure 15.

Figure 18 is the further three-dimensional exploded views of Figure 15, and wherein magnetic, elastomer and screw is separated.

Figure 19 is the further three-dimensional exploded views of Figure 18, wherein the first sealing ring, temperature sensor and pressure sensor It is separated.

Figure 20 is the three-dimensional exploded view of magnetic in Figure 19, elastomer and screw etc..

Figure 21 is Figure 20 after assembling along the diagrammatic cross-section of a certain angle.

Figure 22 is the schematic perspective view of pressure sensor in Figure 19.

Figure 23 is the schematic perspective view of another angles of Figure 22.

Figure 24 is Figure 22 three-dimensional exploded view.

Figure 25 is the diagrammatic cross-section of the line C-C along Figure 22.

Figure 26 is the part isometric point after the first sealing ring, temperature sensor and pressure sensor in removal Figure 19 etc. Xie Tu, wherein the first housing is separated.

Figure 27 is the three-dimensional exploded view of the first housing in Figure 26.

Figure 28 is Figure 27 in the three-dimensional exploded view of another angle.

Figure 29 is the stereogram of first shell body in part in Figure 27.

Figure 30 is Figure 29 in the stereogram of another angle.

Figure 31 is Figure 30 top view.

Figure 32 is the diagrammatic cross-section of the line D-D along Figure 31.

Figure 33 is the diagrammatic cross-section of the E-E lines along Figure 31.

Figure 34 is the diagrammatic cross-section of the F-F lines along Figure 31.

Figure 35 is Figure 29 top view.

Figure 36 is the diagrammatic cross-section of the G-G lines along Figure 35.

Figure 37 is the diagrammatic cross-section of the H-H lines along Figure 35.

Figure 38 is the diagrammatic cross-section of the I-I lines along Figure 35.

Figure 39 is to remove the stereogram after the first housing in Figure 26.

Figure 40 is Figure 39 part isometric exploded view, and wherein first gear component is separated with second gear component.

Figure 41 is Figure 39 top view.

Figure 42 is to remove the first gear component in Figure 40 and the three-dimensional exploded view after second gear component.

Figure 43 is the schematic perspective view of the second housing in Figure 42.

Figure 44 is the schematic perspective view of another angles of Figure 43.

Figure 45 is the schematic perspective view of the 3rd housing unit in Figure 42.

Figure 46 is Figure 45 top view.

Figure 47 is the diagrammatic cross-section of the J-J lines along Figure 46.

Figure 48 is the diagrammatic cross-section of the K-K lines along Figure 46.

Figure 49 is the part isometric exploded view of the utility model nozzle assembly.

Figure 50 is the part isometric exploded view of urea nozzle in Figure 49.

Figure 51 is the schematic perspective view of nozzle assembly housing in Figure 49.

Figure 52 is Figure 51 part isometric exploded view.

Figure 53 is the top view of nozzle assembly housing in part in Figure 52.

Figure 54 is the diagrammatic cross-section of the L-L lines along Figure 53.

Figure 55 is the diagrammatic cross-section of the M-M lines along Figure 54.

Figure 56 is the diagrammatic cross-section of the N-N lines along Figure 54.

Figure 57 is the stereogram of another angles of Figure 53.

Figure 58 is the three-dimensional exploded view of the utility model integrating device.

Figure 59 is the diagrammatic cross-section of the line A-A along Fig. 9.

Figure 60 is the diagrammatic cross-section of the O-O lines along Figure 59.

Figure 61 is the diagrammatic cross-section of the P-P lines along Figure 59.

Figure 62 is the diagrammatic cross-section of the Q-Q lines along Figure 60.

Figure 63 is the diagrammatic cross-section of the R-R lines along Figure 61.

Figure 64 is the diagrammatic cross-section of the line B-B along Fig. 9.

Figure 65 is the diagrammatic cross-section of the S-S lines along Figure 64.

Embodiment

It please join shown in Fig. 1, the utility model discloses a kind of exhaust gas aftertreatment system 100, can start applied to processing The tail gas of machine 10, the discharge of harmful substance is reduced to meet the requirement of Abgasgesetz.The exhaust gas aftertreatment system 100 includes tail Gas post processing spraying system 200 and exhaust aftertreatment package system 300, wherein the spraying system 200 include to Urea liquid is pumped from urea box 201（Join shown in arrow X）And the exhaust to the engine 10（Such as to blast pipe 106 or package system 300 in）The integrating device 1 of middle injection urea liquid；The package system 300 includes being located at the collection Blender 301 into the downstream of device 1 and the carrier 30 as one kind 2 positioned at the downstream of blender 301.Certainly, in some embodiments In can also be not provided with blender, or two or more blender is set.The carrier 30 as one kind 2 may, for example, be choosing The catalysis reduction of selecting property（SCR）Deng.

The engine 10 has engine coolant circulation loop.It please join shown in Fig. 1, in the reality of the utility model diagram Apply in mode, the engine coolant circulation loop includes first circulation loop 101（Join shown in block arrow Y）And second follow Loop back path 102（Join shown in thin arrow Z）, wherein the first circulation loop 101 is to cool down the integrating device 1, to reduce Its risk burnt out by the engine exhaust of high temperature；The second circulation loop 102 is to heat the urea box 201, with reality Now heat defrosting function.It is understood that in first circulation loop 101, the integrating device 1 is provided with and supplies engine cool The inlet attack 103 and the outlet connection 104 for engine coolant outflow that liquid stream enters；In second circulation loop 102, its Provided with control valve 105, to open or close the control valve 105 under appropriate conditions, realize to second circulation loop 102 Control.The heating rod 202 being connected in the second circulation loop 102 is provided with the urea box 201, to utilize engine The temperature of coolant carries out heating defrosting to urea liquid.

Integrating device 1 of the present utility model is described in detail below.

It please join shown in Fig. 2, from principle, integrating device 1 of the present utility model is integrated with urea pump 11 and urea nozzle 12 function.The urea pump 11 includes but is not limited to gear pump, diaphragm pump, plunger pump or vane pump etc..It should be appreciated that It is that term " integrated " as used herein refers to that urea pump 11 and urea nozzle 12 can be installed in exhaust as single device Guan Shang；Or urea pump 11 is close to each other with urea nozzle 12 and is attached by shorter connecting pipe, on the whole may be used To be considered as a device.

In addition, in order to be independently controlled to urea pump 11 and urea nozzle 12, exhaust aftertreatment of the present utility model System 100 is additionally provided with controller 13.It is appreciated that the controller 13 can be integrated with the integrating device 1 or It is provided separately with the integrating device 1.It please join shown in Fig. 2, in the utility model embodiment illustrated, the controller 13 It is integrated in the integrating device 1, to realize the Highgrade integration of part, improves the installation convenience of client.

The integrating device 1 is provided with to accommodate the housing 14 of the urea pump 11 and the urea nozzle 12.Shown in Fig. 2 Embodiment be only rough display to housing 14.For example, in one embodiment, the housing 14 by urea pump 11 with And urea nozzle 12 is shared；In another embodiment, the housing 14 is divided into first be engaged with urea pump 11 Housing and the second housing being engaged with urea nozzle 12, the first housing are assembled together with the second housing, to form one It is overall.The housing 14 is provided with the access road 15 being connected between the urea box 201 and the urea pump 11 and connection Exit passageway 16 between the urea pump 11 and the urea nozzle 12.It should be noted that term used herein " enters " entrance " in mouthful passage 15 " with " " outlet " in exit passageway 16 " is the i.e. urea pump 11 using urea pump 11 as reference Upstream is entrance, and the downstream of urea pump 11 is outlet.The exit passageway 16 connects with the urea nozzle 12, with to the urine Plain nozzle 12 pumps urea liquid.It is understood that the access road 15 is located at the upstream of urea pump 11, lead to for low pressure Road；The exit passageway 16 is located at the downstream of urea pump 11, is high-pressure channel.

In addition, the integrating device 1 is provided with the temperature sensor 171 to detection temperature.The temperature sensor 171 can To be arranged to connect with the access road 15 and/or the exit passageway 16；Or the temperature sensor 171 can be by It is arranged to installed in the optional position of the integrating device 1.The signal that the temperature sensor 171 detects passes to controller 13, controller 13 can improve the injection of urea nozzle 12 based on the control algolithm designed by the input signal and other signals Precision.The integrating device 1 is additionally provided with to detect the pressure sensor 172 of pressure, the pressure sensor 172 with it is described go out Mouth passage 16 connects, to detect the pressure in the high-pressure channel of the outlet of urea pump 11.It is interior due to Integrated design of the present utility model The distance of portion's passage is shorter, it can be considered that the pressure sensor 172 is located closer to the urea nozzle 12. The advantages of this design, in the pressure in the pressure measured by pressure sensor 172 relatively urea nozzle 12, improves The accuracy of data, and then improve the accuracy of spray of urea nozzle 12.

Please join shown in Fig. 2, the integrating device 1 be additionally provided be connected to the exit passageway 16 and the access road 15 it Between overflow element 173.The overflow element 173 includes but is not limited to overflow valve, safety valve or electrically-controlled valve etc..The overflow The function of element 173 is when the pressure in high-pressure channel is higher than setting value, and the overflow element 173 is opened, and will be located at height Urea liquid in pressure passageway is discharged into low-pressure channel or is returned directly in the urea box 201, to realize that pressure is adjusted Section.

In order to drive urea pump 11, the urea pump 11 is provided with the motor coil 111 communicated with the controller 13. In order to drive urea nozzle 12, the urea nozzle 12 is provided with the nozzle coil 121 communicated with the controller 13.

The controller 13 is communicated with the temperature sensor 171 and the pressure sensor 172, by temperature Signal and pressure signal send the controller 13 to.Certainly, in order to realize accurate control, the controller 13 may be used also To receive other signals, such as from CAN, relevant with engine operating parameter signal.In addition, the controller 13 The rotating speed of the urea pump 11 can also be obtained, certainly, the collection of tach signal can pass through corresponding speed probe 175 （Hardware）Or pass through control algolithm（Software）To realize.The controller 13 is respectively to the urea pump 11 and the urea Nozzle 12 is independently controlled.The advantages of this control, is shadow of the action to urea nozzle 12 that can reduce urea pump 11 Ring, to realize higher control accuracy.

In addition, under some operating modes, because the exhaust of engine has higher temperature, and urea nozzle 12 is installation On blast pipe, it is therefore desirable to which the urea nozzle 12 is cooled down.The integrating device 1 is additionally provided with cooling group for this Part, the cooling component are cooled down by cooling medium to the urea nozzle 12.The cooling medium includes but is not limited to Air and/or engine coolant and/or lubricating oil and/or urea etc..It please join shown in Fig. 2, the reality of the utility model diagram Apply mode and use water cooling, i.e., urea nozzle 12 is cooled down using engine coolant.It is provided with housing 14 with for starting The cooling duct 141 of machine coolant circulation.

It please join shown in Fig. 2, the main operational principle of the integrating device 1 is as follows：

Controller 13 drives urea pump 11 to operate, and urea liquid is inhaled into by access road 15 in urea box 201 Urea pump 11, urea nozzle 12 is delivered to through over pressurizeed and then by exit passageway 16.Wherein, controller 13 gather and/or Calculate the signal needed, such as temperature, pressure, revolution speed etc..When reaching injection conditions, controller 13 send control signal to Urea nozzle 12, such as be powered to nozzle coil 121, realize that urea sprays by controlling the motion of needle.Controller 13 is sent out Go out control signal to urea pump 11 to control its rotating speed, so as to the pressure of systems stabilisation.In the embodiment party of the utility model diagram In formula, the controller 13 is independently controlled to the urea pump 11 and the urea nozzle 12 respectively.

It please join shown in Fig. 3 to Figure 65, from structure, in the utility model embodiment illustrated, the integrating device 1 Including pump group part 18, nozzle assembly 19 and controller 13.It please join shown in Figure 10, the nozzle assembly 19 is at least partially inserted into In the pump group part 18, and it is assemblied together by some fixing bolts 64.

It please join shown in Fig. 3 to Figure 10, in the utility model embodiment illustrated, the pump group part 18 includes pump group part Housing 180 and the urea pump 11 being engaged with the pump group part housing 180.The pump group part housing 180 includes being located at top Case 2 and positioned at the lower section of the case 2 and the first housing 3, the second housing 4 and the 3rd housing 5 that are stacked. In the utility model embodiment illustrated, first housing 3, the second housing 4 and the 3rd housing 5 are by metal material It is made.

It please join shown in Figure 11 and Figure 12, the case 2 is included to cover the controller 13 and at least part pump group The case cavity 21 of part 18, the through hole 22 connected with the case cavity 21, some first mounting holes 23 positioned at periphery and The waterproof and breathable lid 24 being fixed in the through hole 22.Chip and other electronic components are installed on the controller 13, They can generate heat at work, cause the air around it to expand, the utility model is by setting waterproof and breathable lid 24 well The effect of solving the problems, such as to damage chip and/or electronic component by pressure because air expands, while also playing waterproof.In addition, The waterproof and breathable lid 24 can improve the environment residing for controller 13, can meet condition of work.In the utility model In embodiment illustrated, in order to improve heat dispersion, the case 2 is made up of the preferable metal material of radiating effect.Separately Outside, the case 2 is also provided with positioned at outside some fin（It is not shown）, to strengthen radiating effect.

It please join shown in Figure 11 and Figure 14, the controller 13 includes control panel 131 and is welded on the control panel 131 On thread plug 132.The thread plug 132 through the case 2 with exposed to outside, to be connected with external circuit Connect.In the utility model embodiment illustrated, the control panel 131 is annular in shape, and it is provided with the centre bore positioned at middle part 135.The pump group part 18 is additionally provided with first housing 3 and to support some supports of the control panel 131 Post 631.

Please join shown in Figure 11 and Figure 14 to Figure 19, the pump group part housing 180 be additionally provided with positioned at the case 2 with it is described Connection board component 6 between first housing 3.Specifically, the connection board component 6 is provided with plate portion 61 and is fixed on the plate In piece portion 61 and the metal cap 62 that raises up.The metal cap 62 is upward through the centre bore 135 of the control panel 131.Please Join Figure 11 shown in, the control panel 131 is clamped jointly by the support column 631 and the case 2, and with the connecting plate group Gap is formed between part 6, so that the control panel 131 is preferably radiated and preferably avoids interfering.

It please join shown in Figure 16, the plate portion 61 is provided with through thereon, the through hole 614 of lower surface, the first threading hole 618 And through hole 615.Please join shown in Figure 14, pressure sensor 172 at least partially across through hole 614, temperature sensor 171 to Least partially penetrate through hole 615.The conductor wire 1721 of pressure sensor 172 passes through through hole 614, the conductor wire of nozzle assembly 19 124 pass through through hole 615, and are electrically connected to institute through the first threading hole 618, the conductor wire 1711 of temperature sensor 171 State on control panel 131.In addition, please join shown in Figure 15, the plate portion 61 is provided with some mounting holes 611 passed through for screw 133. It please join shown in Figure 17, plate portion 61 is provided with the perforation 617 of the corresponding metal cap 62.In the utility model embodiment illustrated In, the lower end of the metal cap 62 is welded on the inwall of the perforation 617.

In the utility model embodiment illustrated, the urea pump 11 is gear pump, it include motor coil 111, The metal cap 62, the elastomer 71 in the metal cap 62 and magnetic 72, the positioned at the lower section of metal cap 62 One sealing ring 73 and intermeshing first gear component 74 and second gear component 75.Because gear pump can establish ratio Larger operating pressure, therefore be advantageous to improve the flow of urea nozzle 12.In addition, gear pump can also invert, beneficial to evacuation The urea liquid of residual, reduce the risk of urea crystals.It please join shown in Figure 12 and Figure 13, the motor coil 111 is provided with support 112 and the coil 113 that is wrapped on the support 112.The support 112 is provided with the hole 114 for housing the metal cap 62. In the utility model embodiment illustrated, the motor coil 111 is interference fitted in the case cavity 21, is so set Put, can be without using extra retaining element（Such as screw etc.）In the case of, motor coil 111 and case cavity 21 are formed One entirety, so as to reduce the quantity of part.In addition, please join shown in Figure 20 and Figure 21, the urea pump 11 also includes housing The outer sleeve 723 of the magnetic 72, the outer sleeve 723 are directly accommodated in the metal cap 62.

It please join shown in Figure 59, the motor coil 111 is socketed in the periphery of the metal cap 62.The plate portion 61 is downward First sealing ring 73 is pushed down to realize sealing.In the utility model embodiment illustrated, elastomer 71 is located at magnetic The lower end of body 72, elastomer 71 is supported by a metallic framework 720 jointly with magnetic 72, such as magnetic 72 and elastomer 71 are socketed in the upper/lower terminal of metallic framework 720 respectively.Metallic framework 720 is provided between elastomer 71 and magnetic 72 Demarcation strip 721.Outside divide plate 721, metallic framework 720 is in hollow tubular on the whole, the first gear component 74 At least partly it is housed in the metallic framework 720（Join shown in Figure 59）.For the preferably spacing elastomer 71, the gold The end of category skeleton 720 is provided with the hook part 724 compressed with the phase of elastomer 71.The hook part 724, which is provided with, to be easy to the bullet 71 sets of body of property is connected to the guiding conical surface 725 on the metallic framework 720.The elastomer 71 is provided with the pilot hole radially extended 711, the metallic framework 720 is provided with the fixing hole 726 corresponding to the pilot hole 711, and the upper end of first gear component 74 leads to The screw 722 crossed in pilot hole 711 and fixing hole 726 is realized radially fixed with the metallic framework 720.So set Put, the axial float of first gear component 74 can be prevented, improve gear pump traveling comfort.It is well known that urea liquid After icing, volume can expand.By setting elastomer 71, elastomer 71 can be compressed to absorb the utility model The volume of the expansion, so as to avoid destroying other elements because of volumetric expansion.

It please join shown in Figure 22 to Figure 25, in the utility model embodiment illustrated, the pressure sensor 172 includes Substrate 176, the circuit board 177 being fixed on the substrate 176, the conductor wire 1721 being connected with the circuit board 177 and button The protection cap 178 being held on the circuit board 177.Wherein, the substrate 176 is provided with board body part 1761 and from the board body part 1761 lug bosses 1762 extended downwardly, sealing ring 1722 is installed on the lug boss 1762.The lug boss 1762 is provided with Downward through through hole 1763, and the through hole 1763 extends upward through the board body part 1761 and circuit board 177.The circuit Plate 177 is provided with chip 1771 in the opening position of the corresponding through hole 1763.The protection cap 178 is arranged on the chip 1771 Periphery, to protect the chip 1771.In the utility model embodiment illustrated, the protection cap 178 is in rectangular-shape, And the protection cap 178 is provided with the hole 1781 connected with the chip 1771.It please join shown in Figure 25 and Figure 59, different from existing Pressure sensor in technology, the pressure sensor 172 in the utility model do not possess single encapsulating housing, but dexterously Borrow case 2 and be used as its encapsulating housing.It is arranged such, volume can be reduced, be easily installed, reduce cost etc..In utility model In embodiment illustrated, the pressure sensor 172 is differential pressure pick-up, and it is become by the differential pressure of the upper and lower ends of chip 1771 Change is transformed into electric signal.In view of the operation principle of differential pressure pick-up is technology well-known to those skilled in the art, herein no longer Repeat.

It please join shown in Figure 26 to Figure 48, in the utility model embodiment illustrated, first housing 3, second shell The housing 5 of body 4 and the 3rd is machined piece, and is fixed together from top to bottom by bolt 66.First housing 3 includes the One upper surface 31, the first lower surface 32 and first side 33, wherein first upper surface 31 be provided with first annular groove 311 with And the first island portion 312 surrounded by the first annular groove 311.The first annular groove 311 seals to house described first Circle 73.First lower surface 32 is provided with the second annular groove 325 and the second island portion surrounded by second annular groove 325 326.Second annular groove 325 is housing the second sealing ring 731（As shown in Figure 64）.

First island portion 312 is provided with the first positioning hole with first lower surface 32 through first upper surface 31 3121st, the second positioning hole 3122 through first lower surface 32, lead to through first upper surface 31 and with the entrance The first connecting hole 3123 and connect through first upper surface 31 and with second positioning hole 3122 that road 15 connects First guiding gutter 3124.It please join shown in Figure 27, Figure 28 and Figure 59, the urea pump 11 is provided with and is housed in first positioning hole The first axle sleeve 76 in 3121 and the second axle sleeve 77 being housed in second positioning hole 3122.In addition, the first shell Body 3 also includes the internal thread hole 317 corresponding to the screw 133.During assembling, the screw 133 is in the peace through plate portion 61 Dress is screwed into the in the internal thread hole 317 after hole 611, so that the connection board component 6 to be fixed.First housing 3 also run through first upper surface 31 including some first assembly holes 318 passed through for bolt 66, first assembly hole 318 With first lower surface 32.First upper surface 31 is additionally provided with positioned at the side of the first island portion 312 and to house pressure The pressure sensor accepting hole 313 of force snesor 172 and to house the temperature sensor accepting hole of temperature sensor 171 314.It please join shown in Figure 59, the sealing ring 1722 on the pressure sensor 172 is interior with the pressure sensor accepting hole 313 Wall realizes sealing.The pressure sensor 172 is pushed down by the plate portion 61, to realize fixation.In addition, first housing 3 Outwardly mounting flange 315 is additionally provided with, the mounting flange 315 is provided with the second peace corresponding to first mounting hole 23 Fill hole 316.During assembling, bolt 63 is sequentially passed through into the second mounting hole 316 and support column 631, and be fastened on the first mounting hole 23 Internal thread in.It is arranged such, the first housing 3 can be realized fixation with case 2, and clamp control panel 131（Join Figure 59 institutes Show）.

In addition, please join shown in Figure 30, first housing 3 be provided with through the first side 33 with urea joint 331 The feed pathway 332 of connection.First housing 3 is provided with through first lower surface 32 and connected with the feed pathway 332 The second logical connecting hole 3127.First connecting hole 3123 and the second connecting hole 3127 are each perpendicular to feed pathway 332.Described first Positioning hole 3121, the second positioning hole 3122, the second connecting hole 3127 are downward through the second island portion 326.Second island portion 326 It is additionally provided with the outlet opening 3126 through first lower surface 32.First lower surface 32 is communicated with first positioning hole 3121 with the first drain charge groove 321 of second positioning hole 3122, to ensure pressure balance.The first drain charge groove 321 is located at In second island portion 326.In addition, first housing 3 is additionally provided with the host cavity 322 downward through first lower surface 32, use To house at least part of nozzle assembly 19.Please join shown in Figure 33, Figure 34 and Figure 36, the host cavity 322 with it is described Pressure sensor accepting hole 313 connects.Meanwhile the host cavity 322 also connects with outlet opening 3126.It please join Figure 32 and Figure 33 It is shown, in the utility model embodiment illustrated, outlet opening 3126 in the inside of first housing 3 be it is inclined, greatly Cause is in inverted V-shaped.First housing 3 is provided with the second threading hole 323 of corresponding first threading hole 618.

In addition, please join shown in Figure 38, Figure 64 and Figure 65, first housing 3 is additionally provided with and feed pathway 332 and receipts The overflow element accepting groove 319 that cavity volume 322 connects.The overflow element accepting groove 319 outwards runs through first side 33, to house The overflow element 173.The overflow element 173 is safety valve in the utility model embodiment illustrated, the purpose is to To ensure that the pressure in the mesohigh passage of integrating device 1 is in the range of safety value by way of pressure release.For fixation The overflow element 173, first housing 3 are provided with the plug 5122 of the fixed overflow element 173.It please join shown in Figure 65, The overflow element 173 is provided with the trickle hole 1731 for connecting the access road 15 and the exit passageway 16 all the time.So set Put, on the one hand can reduce the pressure oscillation of system, especially when nozzle assembly 19 sprays urea；On the other hand also can Urea liquid is enough set to keep flowing, so as to the radiating beneficial to the grade of motor coil 111.

It please join shown in Fig. 1, the urea joint 331 is connected by urea connecting tube 333 with the urea box 201.In order to Heating defrosting function is preferably realized, the exhaust gas aftertreatment system 100 is also provided with carrying out the urea connecting tube 333 The heater 334 of heating.It please join shown in Figure 22 and Figure 29, in the utility model embodiment illustrated, the feed liquor leads to Road 332 it is horizontal-extending enter first housing 3 inside.Certainly, in other embodiments, the feed pathway 332 also may be used With at an angle.

It please join shown in Figure 39 to Figure 41, the first gear component 74 includes first gear axle 741 and is fixed on first First gear 742 on gear shaft 741；The second gear component 75 includes second gear axle 751 and is fixed on the second tooth Second gear 752 on wheel shaft 751, the first gear 742 are intermeshed with the second gear 752.It please join shown in Figure 34, In the utility model embodiment illustrated, the first gear 742 and the external toothing of second gear 752.It is in addition, described First gear axle 741 is driving shaft, and the second gear axle 751 is driven shaft, and the first gear axle 741 is higher than described second Gear shaft 751.The upper end of the first gear axle 741 passes through first axle sleeve 76, and is at least partly fixed on metallic framework In 720.The upper end of the second gear axle 751 is positioned in second axle sleeve 77.When being powered to motor coil 111, its Produce interaction with magnetic 72, electromagnetic force can drive first gear axle 741 to rotate, and thus drive first gear 742 with And second gear 752 rotates.

Second housing 4 is located at the lower section of first housing 3 and is connected with the first housing 3.In addition, in order to more preferable Positioning, some alignment pins 328 are additionally provided between first housing 3 and second housing 4.Second housing 4 includes Second upper surface 41, the second lower surface 42 and through the lower surface 42 of the second upper surface 41 and second and described to house The gear grooved 43 of first gear 742 and second gear 752.The side of the gear grooved 43 is provided with what is connected with access road 15 Admission chamber 431, the opposite side of the gear grooved 43 is provided with goes out sap cavity 432 with what the exit passageway 16 connected.Specifically, feed liquor Chamber 431 connects with the second connecting hole 3127, and the upper end for going out sap cavity 432 connects with outlet opening 3126.In addition, the of the second housing 4 Two upper surfaces 41 are provided with the first receiving hole 411 passed through for the nozzle assembly 19, and the second lower surface 42, which is provided with, positions the spray Second receiving hole 421 of nozzle assembly 19, second receiving hole 421 is more than first receiving hole 411, to form shoulder hole. The nozzle assembly 19 second upper surface 41 protruding upward is simultaneously housed in the host cavity 322.It is arranged such, high pressure Urea liquid can be transported to urea nozzle 12.In addition, second upper surface 41 is additionally provided with corresponding to the second threading hole 323 The 3rd threading hole 412.First threading hole 618, the second threading hole 323 and the 3rd threading hole 412 are mutually aligned, with for spray The conductor wire 124 of nozzle assembly 19 passes through.Second housing 4 also includes some second to be alignd with first assembly hole 318 Assembly hole 418.

It please join shown in Figure 26, Figure 45 to Figure 48, the 3rd housing 5 is located at the lower section of second housing 4 and with second Housing 4 is connected.3rd housing 5 includes body 51, the lug boss 52 extended downwardly from body 51 and described in The flange 53 that body 51 stretches out, wherein the flange 53 is provided with some three to be alignd with second assembly hole 418 Assembly hole 531, passed through with for bolt 66.The body 51 is provided with the 3rd upper surface 511, and the 3rd upper surface 511 is set There are the 3rd annular groove 512 and the 3rd island portion 513 surrounded by the 3rd annular groove 512.3rd annular groove 512 to House the 3rd sealing ring 732（As shown in Figure 64）.3rd island portion 513 is provided with the 3rd positioning hole through the 3rd upper surface 511 5111 and the 4th positioning hole 5112 through the 3rd upper surface 511.3rd housing 5, which is provided with, is contained in the 3rd positioning The 3rd axle sleeve 78 in hole 5111 and the 4th axle sleeve 79 being contained in the 4th positioning hole 5112.The first gear axle 741 lower end is positioned in the 3rd axle sleeve 78, and the lower end of the second gear axle 751 is positioned in the 4th axle sleeve 79.

In addition, the 3rd island portion 513 is additionally provided with the second guiding gutter 5114 and positioned at the 3rd upper surface 511 Three guiding gutters 5115, wherein second guiding gutter 5114 connects with the 3rd positioning hole 5111, the 3rd guiding gutter 5115 and the 4th Positioning hole 5112 connects.It please join shown in Figure 43, the guiding gutter 5115 of the second guiding gutter 5114 and the 3rd is in the 3rd housing 5 Portion is obliquely installed.It please join shown in Figure 48, go out lower end and the second guiding gutter 5114 and the 3rd guiding gutter 5115 of sap cavity 432 Connect.

During work, urea liquid enters feed pathway 332 from the urea connecting tube 333, and a part of urea liquid is from the One connecting hole 3123 enters in metal cap 62, and another part urea liquid enters admission chamber 431 from the second connecting hole 3127；Wherein On the one hand urea liquid in metal cap 62 can be directly penetrated into lubricate the first axle sleeve 76 in the first positioning hole 3121, another Aspect can be penetrated into the second positioning hole 3122 along the first guiding gutter 3124 to lubricate the second axle sleeve 77.Into admission chamber 431 Urea liquid is divided into two-way again, wherein enter exit passageway 16 after the pressurization by gear pump all the way, another way from second, 3rd guiding gutter 5114,5115 respectively enter in the three, the 4th positioning holes 5111,5112 with lubricate the three, the 4th axle sleeves 78, 79, the stationarity that gear pump rotates is improved, reduces abrasion.Into the urea liquid of the high pressure in exit passageway 16 along outlet opening 3126 enter to flow to nozzle assembly 19 in host cavity 322, while a part of urea liquid flows to overflow element 173.Work as pressure When power is less than the setting value of overflow element 173, overflow element 173 is closed, and is only connected by trickle hole 1731；And work as pressure More than overflow element 173 setting value when, overflow element 173 is opened, part urea liquid enter feed pathway 332 in, with reality Existing pressure release.

It is appreciated that in the utility model embodiment illustrated, access road 15 includes feed pathway 332, second Connecting hole 3127 and admission chamber 431.Because the access road 15 is located at the upstream of urea pump 11, low pressure is referred to as Passage.The exit passageway 16 includes sap cavity 432, outlet opening 3126, host cavity 322 etc..Because the exit passageway 16 In the downstream of urea pump 11, so being referred to as high-pressure channel.

Please join shown in Figure 49 to Figure 58, the nozzle assembly 19 include nozzle assembly housing 190 and with the nozzle sets The urea nozzle 12 that part housing 190 is engaged.

The nozzle assembly housing 190 includes the extension 92 that main part 91, main body 91 extend downwardly and from institute State the mounting flange 93 that main part 91 stretches out.The mounting flange 93 is provided with is installed to blast pipe by the integrating device 1 106 or package system 300 on some mounting holes 931.The main part 91 is provided with the 4th upper surface 911 and the 4th side 912.4th upper surface 911 is provided with the accommodating chamber 94 for housing the urea nozzle 12 and the groove for housing lug boss 52 95.It please join shown in Figure 55, the accommodating chamber 94 is extended down into the extension 92.The main part 91 is additionally provided with convex The cylindrical portion 917 stretched into accommodating chamber 94, to support the urea nozzle 12.

The nozzle assembly housing 190 is additionally provided with to cool down the cooling component of the urea nozzle 12.In this reality With in new embodiment illustrated, the cooling component is water cooling component.Cooling duct in nozzle assembly housing 190 141 include through the first cooling duct 913 of the 4th side 912 and are arranged at intervals with first cooling duct 913 The second cooling duct 914.Wherein, first cooling duct 913 connects with the inlet attack 103, second cooling Passage 914 connects with the outlet connection 104.The nozzle assembly housing 190 is provided with the end cap for being sealed in the periphery of extension 92 96.In the utility model embodiment illustrated, the end cap 96 is welded on extension 92.It is arranged such, the nozzle Assembly housing 190 forms between end cap 96 and extension 92 connects the first cooling duct 914 and the second cooling duct 915 Annular cooling bath 916.

In the utility model embodiment illustrated, the mounting flange 93 is formed with the one machining of main part 91. Certainly, in other embodiments, the mounting flange 93 can also be fabricated separately with the main part 91, then be welded on one Rise.

It please join shown in Figure 50, in the utility model embodiment illustrated, the urea nozzle 12 includes nozzle coil 121st, the magnetic portion 81 with the nozzle coil 121 interaction, positioned at the needle portion 82 of the lower section of the magnetic portion 81, act on Spring 83 between the magnetic portion 81 and the needle portion 82 and the valve seat 84 with the needle portion 82 cooperation（Join Fig. 5 institutes Show）.The nozzle coil 121 is wrapped in the periphery of the magnetic portion 81.The urea nozzle 12 also includes being socketed in the spray The sleeve part 122 of the periphery of mouth coil 121.The spring 83 is arranged in the magnetic portion 81 and the needle portion 82.The valve Pin portion 82 is provided with tapered portion 821 and the needle 822 extended downwardly from the tapered portion 821.It please join shown in Figure 52, the valve seat 84 spinning disks 85 including being welded on the extension 92.The spinning disk 85 is provided with the spray being engaged with the needle 822 Perforation 851 and some eddy flow grooves 852 connected with the spray-hole 851.It please join shown in Figure 10, Figure 50 and Figure 59, the magnetic Property portion 81 upper end be socketed with the 4th sealing ring 812 with the inwall of the host cavity 322 realize seal, the magnetic portion 81 Lower end is socketed with the 5th sealing ring 813 and sealed with being realized with the inwall of the accommodating chamber 94.It please join shown in Figure 59, the cylindrical portion The 917 support needle portions 82, enable the needle portion 82 with the nozzle coil 121 on the moving direction of needle 822 More overlapping, influence of the electromagnetic force to needle portion 82 caused by increasing nozzle coil 121 is formed, so as to reduce driving electricity Stream, the power consumption of urea nozzle 12 is reduced, reduce caloric value.Match in addition, being additionally provided with the accommodating chamber 94 with urea nozzle 12 Close to adjust the pad 86 in the gap between magnetic portion 81 and needle portion 82.It is appreciated that the stroke in needle portion 82 and it is above-mentioned between Gap has substantial connection, and above-mentioned gap is adjusted by using the pad 86 of different-thickness, being capable of precision control valve pin portion 82 Stroke, to improve the precision of urea nozzle 12.

It please join shown in Figure 59, the extension 92 is provided with manifold 921, and the needle 822 extends into the manifold 921 In.The magnetic portion 81 is provided with the first intercommunicating pore 811 for connect with the host cavity 322, the needle portion 82 provided with it is described Second intercommunicating pore 823 of the first intercommunicating pore 811 connection, the tapered portion 821 are provided with second intercommunicating pore 823 and the collection Flow the third connecting hole 824 that chamber 921 connects.The eddy flow groove 852 connects with the manifold 921.Under the sleeve part 122 Portion is housed in the accommodating chamber 94, and the sleeve part 122 protrudes the partial receipt of the 4th upper surface 911 in the host cavity In 322.The annular cooling bath 916 is located at the periphery of the manifold 921.

It is appreciated that in other embodiment of the present utility model, such as integrating device is applied to the row to engine Spray fuel in gas, to realize the diesel particulate filter in downstream（DPF）Regeneration.Under this application, the urea pump 11 Petrolift is may alternatively be, the urea nozzle 12 may alternatively be fuel nozzle, and the urea liquid can be replaced For fuel.It is this change be to person of ordinary skill in the field it will be appreciated that, will not be repeated here.

For the ease of understanding the utility model, urea pump is referred to as pump with petrolift, and urea nozzle is referred to as with fuel nozzle For nozzle, urea liquid is referred to as fluid media (medium) with fuel.

Compared to prior art, integrating device 1 of the present utility model is a kind of integrated design, can save or shorten In the prior art to connect the urea tube of pump and nozzle, various sensors in the pump feed unit of prior art can also be saved Plug connector between wire harness, thawing apparatus can also need not be heated, therefore reliability is higher.Integrating device of the present utility model 1 is compact-sized, small volume, is easy to the installation of various vehicles.In addition, interior fluid mediums in integrating device 1 of the present utility model Passage is shorter, and pressure drop is small, and the dead volume between pump and nozzle is small, and efficiency is higher.Temperature sensor 171 and pressure sensor 172 Near from nozzle, injection pressure precision is high.In addition, by being independently controlled respectively to pump and nozzle, the dynamic of nozzle is avoided Work is driven by the action of pump, so as to improve the accuracy of control.Because the accuracy of spray of nozzle improves, so as to Amount and the oxynitrides for the urea being sparged into exhaust reach suitable ratio, reduce because excessively spray urea and caused by Crystallize risk.Integrating device 1 of the present utility model can use water cooling, and the urea temperature for making to remain in integrating device 1 is not up to To crystalline temperature, crystallization is not likely to produce.

Above example is merely to illustrate the utility model and not limits the technical scheme described by the utility model, right The understanding of this specification should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments The utility model is had been carried out being described in detail, still, it will be understood by those within the art that, art Technical staff still the utility model can be modified or equivalent substitution, and all do not depart from essence of the present utility model The technical scheme and its improvement of god and scope, all should cover in right of the present utility model.

Claims (33)

1. A kind of 1. integrating device of pump and nozzle, wherein the pump, to pump fluid media (medium) to the nozzle, the nozzle is used To spray the fluid media (medium) in the exhaust to engine, it is characterised in that：The integrating device includes pump group part and nozzle sets Part；The pump group part includes pump group part housing and the pump being engaged with the pump group part housing, the pump group part housing Including connecting positioned at the upstream of the pump and the access road that is connected with the pump and positioned at the downstream of the pump and with the pump Logical exit passageway, the exit passageway connect with the nozzle assembly, and the pump group part housing includes case and positioned at institute The first housing below case is stated, the case is provided with case cavity, and the access road is located in the first shell body；It is described Pump group part is included to drive the motor coil of the pump, the magnetic to be interacted with the motor coil and intermeshing First gear component and second gear component, wherein the motor coil is interference fitted in the case cavity, described the One gear assembly includes first gear axle and first gear, and the second gear component includes second gear axle and the second tooth Wheel, the first gear are intermeshed with the second gear；The nozzle assembly include nozzle assembly housing and with it is described The nozzle that nozzle assembly housing is engaged, the nozzle assembly also include to drive the nozzle coil of the nozzle, its Described in motor coil be independently controlled respectively with the nozzle coil.
2. 2. integrating device as claimed in claim 1, it is characterised in that：The pump is urea pump, and the nozzle is urea nozzle, The fluid media (medium) is urea liquid.
3. 3. integrating device as claimed in claim 1, it is characterised in that：The pump is petrolift, and the nozzle is fuel nozzle, The fluid media (medium) is fuel.
4. 4. integrating device as claimed in claim 2, it is characterised in that：The integrating device include with the motor coil and The controller of the nozzle coil connection, the controller carry out independent control to the urea pump and the urea nozzle respectively System.
5. 5. integrating device as claimed in claim 2, it is characterised in that：The integrating device includes connecting with the exit passageway Pressure sensor and the overflow element that is connected between the exit passageway and the access road.
6. 6. integrating device as claimed in claim 2, it is characterised in that：The integrating device includes being arranged on the pump group part shell Internal temperature sensor.
7. 7. integrating device as claimed in claim 2, it is characterised in that：The pump group part includes housing the metal of the magnetic Cover, the motor coil are socketed in the periphery of the metal cap；The first gear axle is driving shaft, and the second gear axle is Driven shaft, the first gear axle are higher than the second gear axle.
8. 8. integrating device as claimed in claim 7, it is characterised in that：The pump group part also includes being housed in the metal cap And the elastomer below the magnetic, the elastomer can be compressed to absorb because of expansion caused by urea icing Volume.
9. 9. integrating device as claimed in claim 2, it is characterised in that：The pump group part housing, which is provided with, houses the first gear With the gear grooved of the second gear, the first gear and the second gear external toothing, the side of the gear grooved is provided with With the admission chamber of the inlet passage, the opposite side of the gear grooved is provided with goes out sap cavity with what the exit passageway connected.
10. 10. integrating device as claimed in claim 1, it is characterised in that：The nozzle assembly includes and the nozzle coil phase The magnetic portion of interaction, the needle portion below the magnetic portion, act between the magnetic portion and the needle portion Spring and the valve seat coordinated with the needle portion.
11. 11. integrating device as claimed in claim 10, it is characterised in that：The nozzle coil is located at the outer of the magnetic portion Enclose, the needle portion is provided with needle, and the valve seat is provided with the spray-hole being engaged with the needle.
12. 12. integrating device as claimed in claim 11, it is characterised in that：The valve seat includes being welded on the nozzle assembly shell Spinning disk on body, the spray-hole are arranged on the spinning disk, and the spinning disk is additionally provided with and connected with the spray-hole Logical some eddy flow grooves.
13. 13. integrating device as claimed in claim 2, it is characterised in that：The integrating device is provided with to cool down the urea The cooling component of nozzle, the cooling component are cooled down by cooling medium to the urea nozzle.
14. 14. integrating device as claimed in claim 4, it is characterised in that：The controller is provided with control panel, the motor coil Be electrically connected with the nozzle coil with the control panel, the case be provided with the through hole that is connected with the case cavity and The waterproof and breathable lid being fixed in the through hole；Thread plug is welded with the control panel, the thread plug is exposed to institute State outside case.
15. 15. integrating device as claimed in claim 14, it is characterised in that：The case is entered with first housing by bolt Row connection, the pump group part housing is provided with to be passed through and to support the support column of the control panel for the bolt.
16. 16. integrating device as claimed in claim 9, it is characterised in that：The pump group part housing is provided with and first housing The connection board component being engaged, the connection board component include plate portion and are fixed in the plate portion and raise up Metal cap, the magnetic are housed in the metal cap, and the motor coil is socketed in the periphery of the metal cap, the plate Piece portion is fixed on first housing by some screws.
17. 17. integrating device as claimed in claim 16, it is characterised in that：First housing includes the first upper surface, first Lower surface and first side, wherein first upper surface is provided with first annular groove, surrounded by the first annular groove the One island portion and the first sealing ring being housed in the first annular groove, first sealing ring are located under the metal cap Side, the plate portion compresses downwards first sealing ring；First island portion be provided with through first upper surface with it is described First positioning hole of the first lower surface and the second positioning hole through first lower surface, the urea pump include being housed in The first axle sleeve in first positioning hole and the second axle sleeve being housed in second positioning hole, wherein first tooth Wheel shaft is inserted in first axle sleeve, and the second gear axle is inserted in second axle sleeve.
18. 18. integrating device as claimed in claim 17, it is characterised in that：It is fixed that first lower surface is communicated with described first Position hole and the first drain charge groove of second positioning hole.
19. 19. integrating device as claimed in claim 17, it is characterised in that：First island portion also includes on described first Surface and the first guiding gutter for being connected with second positioning hole and through first upper surface and and inlet passage The first connecting hole；First housing is provided with the second connecting hole for running through first lower surface and being connected with the admission chamber And through first lower surface and with it is described go out the outlet opening that connects of sap cavity.
20. 20. integrating device as claimed in claim 17, it is characterised in that：First housing is additionally provided with downward through described The host cavity of a lower surface, the host cavity is housing at least part of nozzle assembly.
21. 21. integrating device as claimed in claim 20, it is characterised in that：First upper surface is additionally provided with positioned at described first The side of island portion and to house the pressure sensor accepting hole of pressure sensor, the host cavity is received with the pressure sensor Hold hole connection.
22. 22. integrating device as claimed in claim 17, it is characterised in that：First housing is provided with and the outlet opening thereof Overflow element accepting groove, the integrating device, which is provided with, is installed on overflow element in the overflow element accepting groove；Work as outlet When the pressure of passage is higher than setting value, the overflow element is opened so that part urea liquid is returned in the access road.
23. 23. integrating device as claimed in claim 22, it is characterised in that：The pump group part housing includes being located at the first shell The lower section of body and the second housing being connected with first housing, second housing include the second upper surface and the second following table Face, the gear grooved is through second upper surface and the second lower surface.
24. 24. integrating device as claimed in claim 23, it is characterised in that：The pump group part housing includes being located at the second shell The lower section of body and the 3rd housing being connected with second housing, the 3rd housing include body and from the bodies The lug boss extended downwardly, wherein the body is provided with the 3rd upper surface, the 3rd upper surface be provided with the 3rd annular groove with And the 3rd island portion surrounded by the 3rd annular groove, the 3rd island portion are provided with the 3rd positioning through the 3rd upper surface Hole and the 4th positioning hole, the 3rd positioning hole are extended into the lug boss with the 4th positioning hole；The urea pump Including the 3rd axle sleeve being housed in the 3rd positioning hole and the 4th axle sleeve being housed in the 4th positioning hole, wherein The first gear axle is inserted in the 3rd axle sleeve, and the second gear axle is inserted in the 4th axle sleeve.
25. 25. integrating device as claimed in claim 24, it is characterised in that：3rd island portion, which is provided with, runs through the 3rd upper table Second guiding gutter and the 3rd guiding gutter in face, wherein second guiding gutter connects with the 3rd positioning hole, the described 3rd Guiding gutter connects with the 4th positioning hole.
26. 26. integrating device as claimed in claim 24, it is characterised in that：The nozzle assembly housing is including main part and certainly The extension that the main part extends downwardly, the main part are provided with described in the accommodating chamber for housing the urea nozzle and collecting The groove of lug boss, the accommodating chamber are extended down into the extension.
27. 27. integrating device as claimed in claim 1, it is characterised in that：The pump group part housing and the nozzle assembly housing It is fixed together from bottom to top by some fixing bolts.
28. 28. integrating device as claimed in claim 26, it is characterised in that：The nozzle assembly includes and the nozzle coil phase The magnetic portion of interaction, the needle portion being connected with the magnetic portion and the spring for acting on the needle portion；The extension Provided with the manifold connected with the accommodating chamber, wherein being partially housed in for magnetic portion protrusion second upper surface is described In host cavity.
29. 29. integrating device as claimed in claim 28, it is characterised in that：The spring is arranged on the magnetic portion and the valve In pin portion, the needle portion is provided with tapered portion and the needle extended downwardly from the tapered portion, and the needle extends into described In manifold, the magnetic portion is provided with the first intercommunicating pore connected with the accommodating chamber, and the needle portion is provided with and described first Second intercommunicating pore of intercommunicating pore connection, the tapered portion are provided with connect second intercommunicating pore with the manifold the 3rd and connected Through hole.
30. 30. integrating device as claimed in claim 29, it is characterised in that：The nozzle assembly includes what the needle was engaged Valve seat, the valve seat include the spinning disk being welded on the extension, and the spinning disk is provided with what is be engaged with the needle Spray-hole and some eddy flow grooves connected with the spray-hole, the eddy flow groove connect with the manifold.
31. 31. integrating device as claimed in claim 30, it is characterised in that：It is logical that the nozzle assembly housing is provided with the first cooling Road and spaced second cooling duct in first cooling duct and the end cap for being sealed in the extension periphery, institute State nozzle assembly housing and formd between the end cap and the extension and connect first cooling duct and described second The annular cooling bath of cooling duct, first cooling duct are connected with inlet attack with so that engine coolant injects, institute The second cooling duct is stated to be connected with outlet connection with so that engine coolant flows out.
32. 32. a kind of exhaust gas aftertreatment system, including the spraying system of exhaust aftertreatment and the package system of exhaust aftertreatment, its Described in spraying system include integrating device as described in any one in claims 1 to 31, the package system includes Carrier positioned at the integrating device downstream.
33. 33. exhaust gas aftertreatment system as claimed in claim 32, it is characterised in that：The carrier includes selective catalysis also Original, the package system also include at least one blender between the integrating device and the carrier.