CN208503554U - A kind of urea pump block, reversal valve and exchange system of commutating - Google Patents
A kind of urea pump block, reversal valve and exchange system of commutating Download PDFInfo
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- CN208503554U CN208503554U CN201820886940.9U CN201820886940U CN208503554U CN 208503554 U CN208503554 U CN 208503554U CN 201820886940 U CN201820886940 U CN 201820886940U CN 208503554 U CN208503554 U CN 208503554U
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Abstract
The utility model relates to a kind of urea pump commutation blocks, including valve body and valve rod, the valve body is equipped with tetra- runners of A, B, C, D, it is equipped with the valve chamber for accommodating valve rod in the valve body, is equipped with duct in the valve rod, the both ends in the duct are respectively E and F mouthfuls, when valve rod is located at right side, E mouthfuls and F mouthfuls are staggered with runner A and the position runner D respectively, and runner A is connected to runner B, and runner C is connected to runner D；When valve rod is located at left side, E mouthfuls and F mouthfuls are aligned with runner A and runner D respectively, and by hole link, runner C is connected to runner B by runner A and runner D；A kind of reversal valve using above-mentioned commutation block is further related to, further includes coil block；Further relate to a kind of exchange system using above-mentioned reversal valve, the runner A is connected with runner C with pump means, runner B and runner D respectively with urea box and build pressure chamber and be connected；The reversal valve small volume, structure are simple.
Description
Technical field
The utility model relates to a kind of commutation block, reversal valve and exchange systems, in particular to a kind of urea pump is with two four
Logical commutation block, reversal valve and exchange system.
Background technique
In order to preserve the ecological environment, pollution of the harmful substance to environment in lorry tail gas is reduced, nowadays lorry requires to pacify
SCR system is filled, SCR (Selective Catalytic Reduction, catalytic reduction technique) is to utilize NH3 and NOx (nitrogen oxygen
Compound) catalytic reduction reaction occurs to reduce the technology of NOx in the exhaust gas for even being eliminated engine, such as diesel engine, to meet
State IV and the above emission request；The urea pump of SCR system effect needs to complete injection and two kinds of working conditions of pumpback, each urea
The urea liquid in urea pump is flow back to urea box after pump work, at this moment just needs a kind of reversing mechanism, to realize this
Step.
The use of the reversing mechanism that more urea pump uses is on the market piece-picking type, by block every time two holes come
Realize commutation, cooperation pipeline is mutually communicated, and completes the conversion of commutation fluid path；The structure of the reversing mechanism of piece-picking type is more complicated,
Group reload request is high；And since urea liquid crystallization causes the plectrum place of blocking up guide sleeve sternly urea liquid not to be caused to be revealed.
Utility model content
In view of the deficiency of the prior art, it is simple to provide a kind of structure for the utility model, is easily assembled to and reliably
The high urea pump reversal valve of property.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of urea pump commutation block, including valve body
And valve rod, the valve body are equipped with tetra- runners of A, B, C, D, are equipped with the valve chamber for accommodating valve rod in the valve body, in the valve rod
Equipped with duct, the both ends in the duct are respectively E and F mouthfuls, remain that runner A selects one with runner B, D and is connected to, runner C and stream
Road B, D select a connection, and when valve rod is located at right side, E mouthfuls and F mouthfuls are staggered with runner A and the position runner D respectively, runner A and runner
B connection, runner C are connected to runner D；When valve rod is located at left side, E mouthfuls and F mouthfuls are aligned with runner A and runner D respectively, runner A
With runner D by the hole link, runner C is connected to runner B.
Further, it is successively arranged first step, second step and third step on the valve rod from left to right, described first
The first sealing ring, the second sealing ring and third sealing ring are respectively equipped on step, second step and third step, described E mouthfuls sets
In the left side of the second step, described F mouthfuls is set on the third step, the first step and third step difference
For the left and right ends of the valve rod.
The beneficial effect of the utility model commutation block is: valve rod uses hollow structure, reduces the volume of commutation block；Structure
Simply, easy to assembly.
Further, first sealing ring, the second sealing ring and third sealing ring are all made of hydrogenation nitrile rubber.
Beneficial effect using above-mentioned further technical solution is: sealing ring is enclosed more wear-resisting using hydrogenation nitrile rubber.
Further, be additionally provided on the valve chamber four it is corresponding with the runner A, runner B, runner C and runner D respectively
Annular groove, four annular grooves respectively with the runner A, runner B, runner C and runner D arc transition.
Beneficial effect using above-mentioned further upper technical solution is: guaranteeing that movement will not in valve chamber for valve rod and sealing ring
It is scratched.
The utility model further relates to a kind of urea pump reversal valve using above-mentioned commutation block, including coil block, institute
Stating coil block includes coil, the guide sleeve and iron core that are arranged in coil, further include setting the iron core and the guide sleeve it
Between spring, the sliding cavity for iron core sliding is equipped in the guide sleeve, the iron core and the valve rod are coaxially connected.
Further, the iron core is connect with the left end of the valve rod by connecting rod.
Further, first sealing ring can prevent urea liquid from entering in coil block.
Further, between the coil and the valve body be equipped with fixed plate, the fixed plate be equipped with centre bore, it is described in
Heart hole and the valve chamber and the sliding cavity are coaxially disposed.
Further, the right end of the valve body is equipped with sealing plate, and the sealing plate is detachably connected with the valve body.
The beneficial effect of the utility model reversal valve is: electromagnetic coil moves back and forth spool with spring cooperation, is not pressurized
Difference can also work, and not limited by ambient pressure, valve rod is made into hollow structure, reduces the volume of valve block；It is only provided on valve rod
Three sealing rings can realize commutation to seal each cavity, compared to existing two position and four-way reversing valve, the number of sealing ring
It reduces, reduces frictional force, reduce the requirement to the surface roughness of valve flowing channel, decrease appearance when valve rod moves back and forth
The case where easy Caton.
The utility model further relates to a kind of urea pump exchange system, including above-mentioned reversal valve, the runner A and runner
C is connected with pump means, runner B and runner D respectively with urea box and build pressure chamber and be connected；When valve rod is located at right side, E mouthfuls and F
Mouth is staggered with runner A and runner D respectively, and the urea solution in urea box enters runner A through runner B, then enters stream through pump means
Road C, it is most intracavitary into pressure is built through runner D afterwards；When valve rod is located at left side, E mouthfuls and F mouthfuls are staggered with runner A and runner D respectively,
It builds and presses intracavitary urea liquid through runner D, the duct is entered from F mouthfuls, and flowed out from E mouthfuls, then enter pump through runner A and inhale dress
It sets, then enters runner B through runner C, finally enter in urea box from runner B.
Further, the pump means is diaphragm pump.
The beneficial effect of the utility model exchange system is: the hollow structure of valve rod reduces the overall structure of reversal valve；
Guarantee that the movement in valve chamber of valve rod and sealing ring will not be scratched, and use more wear-resisting sealing ring material, in unlubricated feelings
It sealing ring may be implemented under condition rubs for a long time to cause urea liquid to be revealed without wearing, it can be by building in pressure chamber when use
Pressure carrys out auxiliary electromagnetic coil band ovable valve stem and moves along a straight line, to reduce the requirement to electromagnet, to reduce Direct Action Type two
The cost of four-way reversing mechanism.
Detailed description of the invention
Fig. 1 is structural schematic diagram when commutation block is in close state in the utility model；
Fig. 2 is in structural schematic diagram when energized state for commutation block in the utility model；
Fig. 3 is the structural schematic diagram of valve rod in the utility model；
Fig. 4 is structural schematic diagram when reversal valve is in close state in the utility model；
Fig. 5 is in structural schematic diagram when energized state for reversal valve in the utility model；
Fig. 6 is structural schematic diagram when exchange system is in close state in the utility model；
Fig. 7 is in structural schematic diagram when energized state for exchange system in the utility model；
In the accompanying drawings, list of designations represented by each label is as follows: 10, coil block, 11, coil, 12, guide sleeve,
13, iron core, 14, spring, 15, connecting rod, 20, valve body, 21, runner A, 22, runner B, 23, runner C, 24, runner D, 25, valve chamber,
26, annular groove, 30, valve rod, 31, E mouthfuls, 32, F mouthfuls, 33, first step, 34, second step, 35, third step, 36,
One sealing ring, the 37, second sealing ring, 38, third sealing ring, 39, duct, 40, fixed plate, 41, centre bore, 5, sealing plate.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in Figure 1-Figure 3, a kind of urea pump is equipped with commutation block, including valve body 20 and valve rod 30, the valve body 20
A, tetra- runners of B, C, D, the valve body 20 is interior to be equipped with the valve chamber 25 for accommodating valve rod 30, is equipped with duct 39, institute in the valve rod 30
The both ends for stating duct 39 are respectively E mouth 31 and F mouth 32, remain that runner A21 selects one with runner B, D and is connected to, runner C23 with
Runner B, D select a connection, and when valve rod is located at right side, E mouth 31 and F mouth 32 are staggered with runner A21 and the position runner D24 respectively,
Runner A21 is connected to runner B22, and runner C23 is connected to runner D24；When valve rod 30 is located at left side, 32 points of E mouth 31 and F mouth
It is not aligned with runner A21 and runner D24, runner A21 is connected to runner D24 by the duct 39, runner C23 and runner B22
Connection.
It is successively arranged first step 33, second step 34 and third step 35 on the valve rod 30 from left to right, described
The first sealing ring 36, the second sealing ring 37 and third sealing are respectively equipped on one step 33, second step 34 and third step 35
Circle 38, the E mouth 31 are set to the left side of the second step 34, and the F mouth 32 is set on the third step 35, and described first
Step 33 and the third step 35 are respectively the left and right ends of the valve rod 30.
First sealing ring 36, the second sealing ring 37 and third sealing ring 38 are all made of hydrogenation nitrile rubber.
Be additionally provided on the valve chamber 25 four it is opposite with the runner A21, runner B22, runner C23 and runner D24 respectively
The annular groove 26 answered, four annular grooves 26 are round with the runner A21, runner B22, runner C23 and runner D24 respectively
Arc transition.
As shown in fig. 4-5, the utility model further relates to a kind of urea pump reversal valve using above-mentioned commutation block, packet
Coil block 10 is included, the coil block 10 includes coil 11, the guide sleeve 12 and iron core 13 being arranged in coil 11, further includes
Spring 14 between the iron core 13 and the guide sleeve 12 is set, the cunning for the iron core 13 sliding is equipped in the guide sleeve 12
Dynamic chamber, the iron core 13 and the valve rod 30 are coaxially connected.
The iron core 13 is connect with the left end of the valve rod 30 by connecting rod 15, and first sealing ring 36 can prevent
Urea liquid enters in coil block 10, and fixed plate 40, the fixed plate 40 are equipped between the coil 11 and the valve body 20
It is equipped with centre bore 41, the centre bore 41 is coaxially disposed with the valve chamber 25 and the sliding cavity；The right end of the valve body 20
Equipped with sealing plate 50, the sealing plate 50 is detachably connected with the valve body 20.
As Figure 6-Figure 7, the utility model further relates to a kind of urea pump exchange system, including above-mentioned reversal valve, institute
The runner A21 stated is connected with runner C23 with pump means, runner B22 and runner D24 respectively with urea box and build pressure chamber and be connected；
When valve rod 30 is located at right side, E mouth 31 and F mouth 32 are staggered with runner A21 and runner D24 respectively, the urea solution warp in urea box
Runner B22 enters runner A21, then enters runner C23 through pump means, most intracavitary into pressure is built through runner D24 afterwards；When valve rod 30
When positioned at left side, E mouth 31 and F mouth 32 are staggered with runner A21 and runner D24 respectively, build and press intracavitary urea liquid through runner
D24 enters the duct from F mouth 32, and flows out from E mouth 31, then enters pump means through runner A21, then through runner C23
Into runner B22, finally enter in urea box from runner B22；The pump means is diaphragm pump.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of urea pump commutation block, which is characterized in that including valve body and valve rod, the valve body is equipped with A, B, C, D tetra-
Runner, the valve body is interior to be equipped with the valve chamber for accommodating valve rod, is equipped with duct in the valve rod, the both ends in the duct are respectively E and F
Mouthful, when valve rod is located at right side, E mouthfuls and F mouthfuls are staggered with runner A and the position runner D respectively, and runner A is connected to runner B, runner C
It is connected to runner D；When valve rod is located at left side, E mouthfuls and F mouthfuls are aligned with runner A and runner D respectively, and runner A passes through with runner D
Hole link, runner C are connected to runner B.
2. urea pump according to claim 1 commutation block, which is characterized in that be successively arranged from left to right on the valve rod
First step, second step and third step are respectively equipped with the first sealing on the first step, second step and third step
Circle, the second sealing ring and third sealing ring, described E mouthfuls is set to the left side of the second step, and described F mouthfuls is set to the third platform
On rank, the first step and the third step are respectively the left and right ends of the valve rod.
3. urea pump according to claim 1 commutation block, which is characterized in that be additionally provided on the valve chamber four respectively with
The runner A, runner B, runner C and the corresponding annular groove of runner D, four annular grooves respectively with the runner A,
Runner B, runner C and runner D arc transition.
4. a kind of urea pump reversal valve, which is characterized in that further include coil group including commutation block described in claim 2 or 3
Part, the coil block include coil, the guide sleeve and iron core that are arranged in coil, further include setting in the iron core and described lead
Spring between set, the interior sliding cavity being equipped with for iron core sliding of the guide sleeve, the iron core and the valve rod are coaxially connected.
5. urea pump reversal valve according to claim 4, which is characterized in that the left end of the iron core and the valve rod is logical
Cross connecting rod connection.
6. urea pump reversal valve according to claim 5, which is characterized in that first sealing ring can prevent urea
Solution enters in coil block.
7. urea pump reversal valve according to claim 4, which is characterized in that be equipped between the coil and the valve body
Fixed plate, the fixed plate is equipped with centre bore, the centre bore and the valve chamber and the sliding cavity is coaxially disposed.
8. according to the described in any item urea pump reversal valves of claim 4-7, which is characterized in that the right end of the valve body is equipped with
Sealing plate, the sealing plate are detachably connected with the valve body.
9. a kind of urea pump exchange system, which is characterized in that including such as described in any item reversal valves of claim 4-8, institute
The runner A stated is connected with runner C with pump means, runner B and runner D respectively with urea box and build pressure chamber and be connected；When valve rod position
When right side, E mouthfuls and F mouthfuls are staggered with runner A and runner D respectively, and the urea solution in urea box enters runner A through runner B, then passes through
Pump means enters runner C, most intracavitary into pressure is built through runner D afterwards；When valve rod is located at left side, E mouthfuls and F mouthfuls respectively with runner
A and runner D are staggered, and build and press intracavitary urea liquid through runner D, the duct is entered from F mouthfuls, and flow out from E mouthfuls, then through flowing
Road A enters pump means, then enters runner B through runner C, finally enters in urea box from runner B.
10. urea pump exchange system according to claim 9, which is characterized in that the pump means is diaphragm pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886940.9U CN208503554U (en) | 2018-06-08 | 2018-06-08 | A kind of urea pump block, reversal valve and exchange system of commutating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886940.9U CN208503554U (en) | 2018-06-08 | 2018-06-08 | A kind of urea pump block, reversal valve and exchange system of commutating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208503554U true CN208503554U (en) | 2019-02-15 |
Family
ID=65288679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820886940.9U Active CN208503554U (en) | 2018-06-08 | 2018-06-08 | A kind of urea pump block, reversal valve and exchange system of commutating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208503554U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357623A (en) * | 2020-03-30 | 2020-07-03 | 山东胜伟盐碱地科技有限公司 | Trace irrigation system for saline-alkali soil |
| CN113623428A (en) * | 2020-05-07 | 2021-11-09 | 安徽瑞德莱科技服务有限公司 | Reversing mechanism |
-
2018
- 2018-06-08 CN CN201820886940.9U patent/CN208503554U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111357623A (en) * | 2020-03-30 | 2020-07-03 | 山东胜伟盐碱地科技有限公司 | Trace irrigation system for saline-alkali soil |
| CN113623428A (en) * | 2020-05-07 | 2021-11-09 | 安徽瑞德莱科技服务有限公司 | Reversing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201125 Address after: 264006 a-2-2, 199 qinhuaihe Road, Yantai Development Zone, Shandong Province Patentee after: YANTAI YINGDE PRECISION MACHINERY Co.,Ltd. Address before: 264006 Huali Industrial Park, 199 Qinhuai River Road, Yantai Development Zone, Shandong Province Patentee before: CATS ENVIRONMENTAL PROTECTION TECHNOLOGY (YANTAI) Co.,Ltd. |
|
| TR01 | Transfer of patent right |