CN206093067U - Reductant supply system, its backward flow subassembly and valve module - Google Patents
Reductant supply system, its backward flow subassembly and valve module Download PDFInfo
- Publication number
- CN206093067U CN206093067U CN201620824891.7U CN201620824891U CN206093067U CN 206093067 U CN206093067 U CN 206093067U CN 201620824891 U CN201620824891 U CN 201620824891U CN 206093067 U CN206093067 U CN 206093067U
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- Prior art keywords
- valve
- pumpback
- reducing agent
- module
- reductant
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 112
- 238000010992 reflux Methods 0.000 claims abstract description 57
- 230000000694 effects Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a reductant supply system, include, the reductant case, pump module, dosing module and backward flow subassembly, pump module with the reductant case passes through supply line and connects, pump module has certainly reductant case suction reductant or with the function of reductant pumpback to reductant case dosing module pass through pressure pipeline connection in the supply module low reaches, be connected with the manifold on the pressure pipe line, the backward flow subassembly with the manifold is connected, and the backward flow subassembly low reaches pass through reflux pipeline connect in the reductant case, wherein, the backward flow subassembly is in the manifold with form a backward flow route and a pumpback route between the reflux pipeline. Through providing different backward flow route and pumpback routes, can make the reductant among the pumpback dosing module synchronous with the reductant in reflux pipeline and the backward flow subassembly.
Description
Technical field
, about a kind of reductant supply system, its reflux assembly and valve module, especially relevant one kind can for this utility model
To synchronously complete reductant supply system, its time of pumpback reductant supply system pressure line and the reducing agent in reflux pipeline
Stream component and valve module.
Background technology
Vehicle reductant supply system generally comprises two sections of courses of work, the common course of work and the pumpback course of work.Please
Refering to shown in Fig. 1, reductant supply system 100 includes reducing agent tank 101, supply module 102, jet module 103 and backflow group
Part 104, supply module 102 include main pump 105 and reversal valve 106, so that reducing agent is aspirated in autoreduction agent case 101 or be able to will reduce
Agent is back in reducing agent tank 101.
During common work, main pump 105 is started working, and the reducing agent in reducing agent tank 101 is pumped to supply mould
Block 102, is further supplied to jet module 103 by pressure line, before jet module 103 opens injection, pressure line
In reducing agent build pressure.In addition, manifold is also associated with pressure line, the manifold is further connected with reflux assembly 104, when
When pressure rise in pressure line is to certain value, from manifold, some reducing agent passes through reflux assembly 104 and return duct
Line is back to reducing agent tank 101, so as to keep the pressure in pressure line will not be too high.Include in the reflux assembly 104
Filter 107, keeps cleaning, reflux assembly 104 also to include choke valve 108 to filter the reducing agent in reflux pipeline, from
And the reducing agent in reflux pipeline is flowed back with certain flow velocity.
At the end of injection, in order to prevent the reducing agent remained in reductant supply system from freezing under low temperature state so as to
Destruction reductant supply system, needs to start the pumpback course of work.In the pumpback course of work, reversal valve 106 changes position, from
And the reducing agent that main pump 105 will be remained in pressure line and subsequent jet module 103, and the backflow group after manifold
The reducing agent remained in part 104 and reflux pipeline, pumpback is in reducing agent tank 101 together.
In pumpback, two-way pumpback path is produced, the first via is pressure line and jet module 103, and the second tunnel is discrimination
Pipe, reflux assembly 104 and reflux pipeline.If the path of pumpback all the way therein is terminated prior to another road pumpback, Ze Gai roads are hollow
Gas can be directly entered, so as to system cannot be clean by the reducing agent pumpback in another road.Under low temperature state, if reducing agent
Freeze, then some parts that may be destroyed in reductant supply system, such as jet module etc..
Utility model content
The purpose of this utility model be provide one kind can synchronously complete pumpback reductant supply system pressure line and
The reductant supply system of the reducing agent in reflux pipeline, its reflux assembly and valve module.
This utility model provides a kind of valve module, including valve chest, has valve pocket and valve top surface, in institute in the valve casing body
Stating, backflow choke valve is formed in the valve top surface, the valve element of the check valve is sealed by elastic component
The backflow choke valve being closed, pumpback choke valve being further provided with from the valve chest, the pumpback choke valve can be with the valve
Chamber connects.
This utility model also has following characteristics, and the pumpback choke valve is arranged at the valve top surface of the valve chest
On.
This utility model also has following characteristics, and the throttle diameter of the backflow choke valve is more than the pumpback choke valve
Throttle diameter.
This utility model provides reflux assembly, including shell in addition, and the inside the shell is provided with filter and as mentioned above
Valve module.
This utility model provides a kind of reductant supply system in addition, including,
Reducing agent tank；
Pump module, the pump module are connected by supply line with the reducing agent tank, and the pump module is with from described
Reducing agent tank aspirates reducing agent or the function by reducing agent pumpback to reducing agent tank；
Jet module, the jet module are connected to the pump module downstream by pressure line, on the pressure line
It is connected with manifold；
Reflux assembly, the reflux assembly are connected with the manifold, and pass through return duct in the downstream of the reflux assembly
Line is connected to the reducing agent tank, wherein,
The reflux assembly forms a return flow path and a pumpback road between the manifold and the reflux pipeline
Footpath.
This utility model also has following characteristics, and the return flow path is included a backflow choke valve and saved with the backflow
Reducing agent unnecessary in pressure line can be back to reducing agent tank by the return flow path by the check valve of stream valve series connection.
This utility model also has following characteristics, and the pumpback path includes a pumpback choke valve, by the pumpback
Choke valve can be by the reducing agent pumpback in reflux pipeline and manifold to pump module.
This utility model also has following characteristics, and the restriction effect of the pumpback choke valve is arranged in pump module pumpback
When, can be by the reduction in institute's reflux pipeline and reducing agent in manifold pressure line and jet module with the manifold downstream
Agent synchronization pumpback terminates.
This utility model also has following characteristics, and the pump module includes pump and reversal valve.
This utility model also has following characteristics, and the reflux assembly includes filter and if claim is to any one institute
The valve module stated.
Using architectural feature of the present utility model, the supply reducing agent and pumpback reducing agent in reductant supply system
During use different paths, can make reductant supply system that pumpback reductant supply system pressure is synchronously completed in pumpback
The reducing agent of the reducing agent in solenoid line and reflux pipeline.
Description of the drawings
Below with reference to the accompanying drawings exemplary embodiment of the present utility model is described in detail, it will be appreciated that retouch below
The embodiment stated is only used for explaining this utility model, and scope of the present utility model is not restricted, and appended accompanying drawing is wherein：
The structured flowchart of Fig. 1 reductant supply systems of the prior art.
Fig. 2 is the reductant supply system structured flowchart of one embodiment of the present utility model.
Fig. 3 is the sectional view of the reflux assembly of one embodiment of the present utility model, to the entirety for showing reflux assembly
Structure.
Fig. 4 is the sectional view of the valve module of one embodiment of the present utility model, to show the structure in valve module.
Fig. 5 is the sectional view of the valve module of another embodiment of the present utility model, to show the structure in valve module.
Specific embodiment
In different drawings, same or analogous part is presented with like reference characters.
It should be appreciated that accompanying drawing is only used for illustrating this utility model, the wherein size of part, proportionate relationship and portion
The number of part is not as to restriction of the present utility model.
Refer to shown in Fig. 2, in one embodiment of reductant supply system of the present utility model, the reducing agent supply
System 10 includes reducing agent tank 1, and the reducing agent tank 1 is connected with a pump module 2, and the pump module 2 is with reducing agent tank 1 by supplying
Pipeline 12 is answered to connect, the pump module 2 aspirates reducing agent or by reducing agent pumpback to reducing agent tank 1 with from the reducing agent tank
Function.In the explanation of this practical utility model, it is from upper to define autoreduction agent case 1 to the direction that pump module 2 supplies reducing agent
Trip direction downstream.There is jet module 3 in the downstream connection of pump module 2, the jet module 3 is connected by pressure line 23
In supply module 2, in the downstream of supply module 2.Manifold 34 is connected with further on the pressure line 23, the manifold 34
Downstream connection has reflux assembly 4, and the downstream of reflux assembly 4 has reflux pipeline 41, and the reflux pipeline 41 can be by the group that flows back
Reducing agent in part 4 is delivered to reducing agent pipe 1.
In the present embodiment, the pump module 2 includes pump 21 and reversal valve 22, by the effect of reversal valve 22, completes pump
21 autoreduction agent casees 1 are downstream supplied reducing agent or reducing agent pumpback are returned the conversion of reducing agent tank 1 from downstream.Certainly at other
In embodiment, the pump module can have other embodiments, for example, arrange the pump of two different directions, and a supply is also
Former agent, a pumpback reducing agent；One can also be arranged and the pump for turning can be moved with two kinds of different directions, other embodiments are not
Repeat again.
Please continue to refer to shown in Fig. 2, reflux assembly 4 is set in the downstream of manifold 34, the reflux assembly 4 is provided with and will reduce
Reducing agent in the supply module 2 that agent is swum thereon at is delivered to the return flow path of reflux pipeline 41 downstream, while setting
It is equipped with reducing agent from the pumpback path of the supply module 2 of 41 pumpback of reflux pipeline to its upstream in downstream.
Cooperation is referred to refering to shown in Fig. 2,3, in the embodiment shown in Fig. 2,3, reflux assembly 4 includes shell 44,
Filter 5 is provided with the shell 44, the downstream of filter 5 is provided with a valve module 6.The valve module 6 includes backflow throttling
Valve 64, is in series with a check valve 622 on backflow choke valve 64, and take out once choke valve 65 and the backflow choke valve 64 and
Check valve 622 is in parallel.The check valve 622 can be unidirectionally opened from upstream toward downstream.From the backflow choke valve 64 through check valve
622 form return flow path, and pumpback choke valve 65 described in Jing forms pumpback path.
Cooperation is referred to refering to shown in Fig. 2,3,4, which shows the internal physical structure of valve module 6, and the valve module 6 includes
Valve chest 61, valve chest 61 have valve pocket 62 and valve top surface 63, are provided with check valve 622, the check valve in the valve pocket 62
62 include elastic component 6222 and are arranged at the valve element 6221 on 6222 top of elastic component.Groove 631, valve element are formed on valve top surface 63
6221 can withstand at groove 631 in the presence of elastic component 6222 so as to close the groove 631 and valve pocket 62.On the valve top
Backflow choke valve 64 is formed on face 63, in the present embodiment, the backflow choke valve 64 is connected with groove 631.From the valve top surface
Pumpback choke valve 65 is further provided with 63, the pumpback choke valve 65 can be connected with the valve pocket 62, but with the groove
631 do not connect, and when valve element 6222 closes the groove 631, the pumpback choke valve 65 continues to keep connecting with valve pocket 62.Certainly exist
In other embodiments, the groove 631 can be omitted, and pass through valve element 6222 and directly close the backflow choke valve on valve top surface 63
64.In other embodiments, pumpback choke valve 65 can also be not provided with valve top surface 63, and is arranged at side wall, specifically
Embodiment not will not be described here.
Refer to shown in Fig. 5, be a kind of structural representation of another embodiment of valve module of this utility model 6, itself and Fig. 4
Shown in difference be pumpback choke valve 65 position and structure it is different from Fig. 4.One of ordinary skill in the art is in this reality
Many different versions be can be designed that with new technology enlightenment.
In the present embodiment, the throttle diameter of backflow choke valve 64 is the throttle diameter of the pumpback choke valve 65.
Other settings, including pump power, each length of pipeline, in the case that the size of injection apparatus determines, it may be determined that backflow choke valve
And the pore size of pumpback choke valve, so as to ensure the pumpback in regular supply and pumpback stage from pressure line and injection apparatus
Process is synchronous with the pumpback process from manifold, reflux assembly and reflux pipeline.The synchronization in this utility model, might not
Terminate completely simultaneously, be ended substantially simultaneously, for the safety of reductant supply system do not produce materially affect be also included within it is interior.
In the actual course of work, in the stage of normal supply reducing agent, reversal valve 21 is in forward condition, this
When, pump 22 aspirates reducing agent from reducing agent tank 1 by supply line 12, and reducing agent leads up to pressure line 23 and supplies to spray
Module 3 is penetrated, another road is supplied to reflux assembly 4 from manifold 34.The pressure of the reducing agent in pressure line 23 gradually rises, when reaching
Start to spray reducing agent to jet module 3 during certain pressure value.Now, the pressure in manifold 34 is also raised, and reducing agent passes through
Filter 5 enters return flow path.First, it is filled with groove 631 through the choke valve 64 that flows back, now the pressure of reducing agent promotes single
The elastic force of elastic component 6221 is overcome downstream to move to the valve element 6222 of valve 622, check valve 622 is opened, so as to reducing agent can
Reflux pipeline 41 is entered through valve pocket 62, and eventually enter into reducing agent tank 1, because backflow choke valve 64 and check valve 622
Exist, so as to the pressure in pressure line 23 is able to maintain that certain pressure value.In the present embodiment, the section of backflow choke valve 64
Throttle diameter of the discharge orifice footpath much larger than pumpback choke valve 65, therefore in the state of backflow choke valve 64 is opened, pumpback choke valve
65 restriction effect can be ignored.
Into the pumpback course of work, reversal valve 21 changes direction, so as to pump 22 is first by 23 part of pressure line
Reducing agent pumpback, then, the reduction in the reducing agent remained in jet module 4 and manifold 34, reflux assembly 4, reflux pipeline 41
Agent also pumpback to pressure line 23.When pressure in manifold 34 is reduced because of pumpback, check valve 622 is in elastic component 6221
Effect is lower to close, and so as to flow back, choke valve 64 is ineffective, and only pumpback choke valve 65 provides throttling function.Because pumpback choke valve
65 throttle diameter is less, even if so in the case of reflux pipeline 41 considerably shorter than pressure line 23, can also make pressure line
23 and jet module 3 in residual reducing agent pumpback synchronous with the reducing agent remained in reflux pipeline 41 and reflux assembly 4 it is complete
Into.
This utility model is described only in conjunction with the most practical preferred embodiment being presently considered above, it is to be understood that
It is that described above is not that, to restriction of the present utility model, this utility model is also not limited to the example above, the art
Change, remodeling, addition or replacement that those of ordinary skill is made in essential scope of the present utility model, should also belong to this reality
With new protection domain.
Claims (10)
1. a kind of valve module (6), it is characterised in that including have in valve chest (61), the valve chest (61) valve pocket (62) and
Valve top surface (63), is provided with check valve (622) in the valve pocket (62), forms backflow choke valve in the valve top surface (63)
(64), the valve element (6221) of the check valve (622) closes backflow choke valve (64) by elastic component (6222), from described
Valve chest (61) is further provided with pumpback choke valve (65), and the pumpback choke valve (65) can be connected with the valve pocket (62).
2. valve module (6) as claimed in claim 1, it is characterised in that the pumpback choke valve (65) is arranged at the valve casing
On the valve top surface (63) of body (61).
3. valve module (6) as claimed in claim 1 or 2, it is characterised in that the throttle diameter of backflow choke valve (64) is big
In the throttle diameter of the pumpback choke valve (65).
4. a kind of reflux assembly (4), it is characterised in that including be provided with shell (44), the shell (44) filter (5) and
Valve module (6) as described in any one of claim 1-3.
5. a kind of reductant supply system (10), including：
Reducing agent tank (1)；
Pump module (2), the pump module (2) are connected by supply line (12) with the reducing agent tank (1), the pump module
(2) reducing agent or the function by reducing agent pumpback to reducing agent tank (1) are aspirated with from the reducing agent tank (1)；
Jet module (3), the jet module (3) are connected to the pump module (2) downstream, the pressure by pressure line (23)
Manifold (34) is connected with solenoid line (23)；
Reflux assembly (4), the reflux assembly (4) are connected with the manifold (34), and are led in the downstream of the reflux assembly (4)
Cross reflux pipeline (41) and be connected to the reducing agent tank (1), wherein,
The reflux assembly (4) forms a return flow path and one between the manifold (34) and the reflux pipeline (41)
Pumpback path.
6. reductant supply system (10) as claimed in claim 5, it is characterised in that the return flow path includes a backflow
Choke valve (64) and the check valve (622) connected with backflow choke valve (64), can be by pressure by the return flow path
In pipeline, unnecessary reducing agent is back to reducing agent tank (1).
7. reductant supply system (10) as claimed in claim 5, it is characterised in that the pumpback path includes a pumpback
Choke valve (65), can be by the reducing agent pumpback in reflux pipeline (41) and manifold (34) extremely by the pumpback choke valve (65)
Pump module (2).
8. reductant supply system (10) as claimed in claim 7, it is characterised in that the section of the pumpback choke valve (423)
Stream effect be arranged in pump module (2) pumpback, can by the reducing agent in institute's reflux pipeline (41) and manifold (34) with it is described
Reducing agent synchronization pumpback in the pressure line (23) and jet module (3) in manifold (34) downstream terminates.
9. reductant supply system (10) as described in any one of claim 5 to 8, it is characterised in that pump module (2) bag
Include pump (21) and reversal valve (22).
10. reductant supply system (10) as claimed in claim 9, it is characterised in that the reflux assembly (4) is including filtration
Device (5) and the valve module (6) as described in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620824891.7U CN206093067U (en) | 2016-08-01 | 2016-08-01 | Reductant supply system, its backward flow subassembly and valve module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620824891.7U CN206093067U (en) | 2016-08-01 | 2016-08-01 | Reductant supply system, its backward flow subassembly and valve module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206093067U true CN206093067U (en) | 2017-04-12 |
Family
ID=58467635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620824891.7U Active CN206093067U (en) | 2016-08-01 | 2016-08-01 | Reductant supply system, its backward flow subassembly and valve module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206093067U (en) |
-
2016
- 2016-08-01 CN CN201620824891.7U patent/CN206093067U/en active Active
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