CN108223340A - A kind of diaphragm of diaphragm pump assembly for urea liquid - Google Patents
A kind of diaphragm of diaphragm pump assembly for urea liquid Download PDFInfo
- Publication number
- CN108223340A CN108223340A CN201711488162.4A CN201711488162A CN108223340A CN 108223340 A CN108223340 A CN 108223340A CN 201711488162 A CN201711488162 A CN 201711488162A CN 108223340 A CN108223340 A CN 108223340A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- valve
- seat
- honour
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of diaphragm of diaphragm pump assemblies for urea liquid, it includes valve body and the check valve assembly being set in the valve body, diaphragm unit and driving mechanism, the check valve assembly includes the seat of honour and the lower seat that are set in valve body, the diaphragm unit includes diaphragm, the movable inner cavity of sealing is formed between the diaphragm and the lower seat, the driving mechanism drives the diaphragm to move back and forth and then movable inner cavity is made to increase or become smaller, inlet and liquid outlet are offered on the seat of honour, sealed set arranged side by side has the first check valve and the second check valve between the seat of honour and lower seat, the inlet, first check valve, movable inner cavity, second check valve and liquid outlet form unidirectional sealing runner.Above-mentioned to be not only simple in structure for the diaphragm of diaphragm pump assembly of urea liquid, reasonable design, service life are long；And urea pump drawing liquid vacuum degree can be effectively improved, good airproof performance, metering is accurately.
Description
Technical field
The present invention relates to a kind of diaphragm pump, more particularly, to a kind of diaphragm of diaphragm pump assembly for urea liquid.
Background technology
Existing diesel engine self-technique is unable to reach the exhaust emission standard of rules and regulations, therefore must increase a set of system newly
System, makes the oxynitrides in urea liquid and tail gas fully be reacted, to reach the exhaust emission standard of rules and regulations；Cause
The device that a voltage stabilizing is needed in exhaust pipe, measures certain volume urea liquid is ejected into for urea liquid, and current technology is very
Hardly possible realizes this requirement, the serious development for limiting diesel car industry.
Invention content
The purpose of the present invention is to provide a kind of diaphragm of diaphragm pump assembly for urea liquid, to solve in the prior art
In tail gas processing system of diesel engine urea liquid injection there are it is unstable the problem of.
For this purpose, the present invention uses following technical scheme：
A kind of diaphragm of diaphragm pump assembly for urea liquid including valve body and is set to unidirectional in the valve body
Valve module, diaphragm unit and driving mechanism, the check valve assembly include the seat of honour and the lower seat that are set in valve body, the diaphragm
Component includes diaphragm, and the movable inner cavity of sealing is formed between the diaphragm and the lower seat, and the driving mechanism drives the film
Piece moves back and forth and then movable inner cavity is made to increase or become smaller, and offers inlet and liquid outlet on the seat of honour, the seat of honour and
Sealed set arranged side by side has the first check valve and the second check valve between lower seat, the inlet, the first check valve, movable inner cavity,
Second check valve and liquid outlet form unidirectional sealing runner.
Particularly, the bottom periphery of the diaphragm is equipped with arc locating ring, and annular groove is provided on the valve body, described
Arc locating ring is set in the annular groove, can play positioning action, and energy when diaphragm assembles using the above structure
Enough improve the structural stability of diaphragm.
Particularly, the top surface periphery of the diaphragm offers locating slot, coordinates the locating slot in the bottom surface of the lower seat
On be provided with positioning convex strip, the positioning convex strip is set in the locating slot.
Particularly, the tail portion of the diaphragm is provided with fixing screws, and the driving mechanism includes connecting bar disk, the fixed spiral shell
Nail is connect with the connecting bar disk.
Particularly, on the outer end face at the seat of honour external sealing is both provided in the periphery of the inlet and liquid outlet
Item.
Particularly, it is provided with inner sealing item on the contact surface of the seat of honour and lower seat.
Particularly, the upper surface of the diaphragm is designed using wavy shaped configuration, can effectively squeeze solution, and can absorb
Tension and compression stress of the diaphragm in active procedure preferably extends the service life of diaphragm.
Particularly, first check valve and the second one-way valve structures are identical and be set to the seat of honour and lower seat in the opposite direction
Between, including valve casing, valve deck, one-way valve spring, unidirectional valve ball, the valve casing is by unidirectional valve seals sealed set in institute
State in lower seat, one end of the valve deck is set in the valve casing, and the other end is located in the seat of honour, the one-way valve spring and
Unidirectional valve ball is set between the valve casing and valve deck, and unidirectional valve ball sealing is provided between the unidirectional valve ball and the valve casing
Circle.
Particularly, the diaphragm, which includes base, the intermediate adhesion of the base made of resistant to urea solution rubber, fiber
Layer, the fixing screws are embedded in the base.
Beneficial effects of the present invention are, the diaphragm of diaphragm pump assembly for urea liquid is not only compared with prior art
Simple in structure, reasonable design, service life are long；And urea pump drawing liquid vacuum degree can be effectively improved, and good airproof performance, metering essence
Really.
Description of the drawings
Fig. 1 is the structural representation for the diaphragm of diaphragm pump assembly for urea liquid that the specific embodiment of the invention provides
Figure；
Fig. 2 is the partial enlarged view at A in Fig. 1.
Specific embodiment
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
It please refers to Fig.1 with shown in Fig. 2, in the present embodiment, a kind of diaphragm of diaphragm pump assembly for urea liquid includes valve
Body 1 and check valve assembly, diaphragm unit and the driving mechanism being set in the valve body 1, the check valve assembly include setting
It is placed in the seat of honour 2 in valve body 1 and lower seat 3, is provided with inner sealing item 4 on the contact surface of the seat of honour 2 and lower seat 3, passes through institute
It states inner sealing item 4 to be sealed the seat of honour 2 and lower seat 3, the diaphragm unit includes diaphragm 5, and the diaphragm 5 includes resistant to urea
Base made of solution rubber, the intermediate adhesion of the base have fibrous layer, and fixing screws 6 are embedded in the diaphragm 5, adopt
The assembling of diaphragm unit and driving structure is facilitated with this structure, and connection is reliable, reduces overall volume, the fixing screws
6 use Cr18Ni9 materials and are surface-treated accordingly, enhance its intensity and service life, and provide reliable and stable spray
Injection pressure, the driving mechanism include connecting bar disk 7, and the fixing screws 6 are connect with the connecting bar disk 7, and the connecting bar disk 7 is by driving
Dynamic motor drives it to pump.
The diaphragm 5 is installed in the valve body 1 of 3 lower section of lower seat, and the bottom periphery of the diaphragm 5 is positioned equipped with arc
Ring 8 is provided with annular groove 9 on the valve body 1, and the arc locating ring 8 is set in the annular groove 9, the diaphragm 5
Top surface periphery offer locating slot 10, coordinate the locating slot 10 in being provided with positioning convex strip 11 on the bottom surface of the lower seat 3,
The positioning convex strip 11 is set in the locating slot 10, can play positioning action when diaphragm assembles using the above structure,
And the structural stability of diaphragm can be improved.
The movable inner cavity 12 of sealing is formed between the diaphragm 5 and the lower seat 3, the connecting bar disk 7 drives the diaphragm 5
It pumps and then movable inner cavity 12 is made to increase or become smaller, the upper surface of the diaphragm 5 is designed using wavy shaped configuration, energy
Effective exclusion solution, and can tension and compression stress of the Absorbing film 5 in active procedure, preferably extend diaphragm uses the longevity
Life.
Inlet 13 and liquid outlet 14 are offered on the seat of honour 2, in the inlet 13 on the outer end face at the seat of honour 2
External sealing strip 15 is both provided with the periphery of liquid outlet 14, there is first single sealed set arranged side by side between the seat of honour 2 and lower seat 3
To 16 and second check valve 17 of valve, the inlet 13, the first check valve 16, movable inner cavity 12, the second check valve 17 and go out liquid
Mouth 14 forms unidirectional sealing runner.
First check valve 16 is identical with 17 structure of the second check valve, but the arranged direction phase in the seat of honour and lower seat
Instead, both including valve casing 18, valve deck 19, one-way valve spring 20, unidirectional valve ball 21, first check valve 16 and second is unidirectionally
The valve casing 18 of valve 17 respectively by unidirectional 22 sealed set of valve seals in corresponding lower seat 3 or the seat of honour 2, the valve deck 19
One end is set in the valve casing 18, and the other end is located in the seat of honour 2, and the one-way valve spring 20 and unidirectional valve ball 21 are set
Between the valve casing 18 and valve deck 19, unidirectional valve ball sealing ring is provided between the unidirectional valve ball 21 and the valve casing 18
23。
During work, 12 volume of the activity inner cavity increases when diaphragm 5 moves downward, and internal vacuum is caused to become larger, into
And from 13 inspiration liquid of inlet；Movable 12 volume of inner cavity reduces when diaphragm 5 moves upwards, and internal vacuum is caused to become smaller,
And then spray liquid from liquid outlet 14.And constant volume of movable 12 solution of inner cavity in each cycle, it is lived by controlling
The cycle-index of dynamic inner cavity 12 carries out accurate measurement liquor capacity.
Above example is to elaborate the basic principle and characteristic of the present invention, and the present invention is not limited by above-mentioned example,
Without departing from the spirit and scope, the present invention also has various changes, these changes and modifications are both fallen within
In scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (9)
1. a kind of diaphragm of diaphragm pump assembly for urea liquid, which is characterized in that it includes valve body and is set to the valve
Internal check valve assembly, diaphragm unit and driving mechanism, the check valve assembly include being set to the seat of honour in valve body under
Seat, the diaphragm unit include diaphragm, and the movable inner cavity of sealing, the driving mechanism are formed between the diaphragm and the lower seat
The diaphragm is driven to move back and forth and then movable inner cavity is made to increase or become smaller, inlet and liquid outlet are offered on the seat of honour,
Sealed set arranged side by side has the first check valve and the second check valve between the seat of honour and lower seat, the inlet, the first check valve,
Movable inner cavity, the second check valve and liquid outlet form unidirectional sealing runner.
2. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that the bottom of the diaphragm
Face periphery is equipped with arc locating ring, is provided with annular groove on the valve body, it is recessed that the arc locating ring is set to the annular
In slot.
3. the diaphragm of diaphragm pump assembly according to claim 1 or 2 for urea liquid, which is characterized in that the diaphragm
Top surface periphery offer locating slot, coordinate the locating slot in being provided with positioning convex strip on the bottom surface of the lower seat, it is described fixed
Position raised line is set in the locating slot.
4. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that the tail of the diaphragm
Portion is provided with fixing screws, and the driving mechanism includes connecting bar disk, and the fixing screws are connect with the connecting bar disk.
5. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that outside the seat of honour
On end face external sealing strip is both provided in the periphery of the inlet and liquid outlet.
6. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that the seat of honour is under
Inner sealing item is provided on the contact surface of seat.
7. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that the diaphragm it is upper
It is designed using wavy shaped configuration on surface.
8. the diaphragm of diaphragm pump assembly according to claim 1 for urea liquid, which is characterized in that described first is unidirectional
Valve and the second one-way valve structures are identical and be set in the opposite direction between the seat of honour and lower seat, including valve casing, valve deck, check valve
Spring, unidirectional valve ball, by unidirectional valve seals sealed set in the lower seat, one end of the valve deck is set the valve casing
In in the valve casing, the other end is located in the seat of honour, and the one-way valve spring and unidirectional valve ball are set to the valve casing and valve
Between lid, unidirectional valve ball sealing ring is provided between the unidirectional valve ball and the valve casing.
9. the diaphragm of diaphragm pump assembly according to claim 4 for urea liquid, which is characterized in that the diaphragm includes
Base made of resistant to urea solution rubber, the intermediate adhesion of the base have fibrous layer, and the fixing screws are embedded in the base
In layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488162.4A CN108223340A (en) | 2017-12-29 | 2017-12-29 | A kind of diaphragm of diaphragm pump assembly for urea liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711488162.4A CN108223340A (en) | 2017-12-29 | 2017-12-29 | A kind of diaphragm of diaphragm pump assembly for urea liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223340A true CN108223340A (en) | 2018-06-29 |
Family
ID=62647442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711488162.4A Pending CN108223340A (en) | 2017-12-29 | 2017-12-29 | A kind of diaphragm of diaphragm pump assembly for urea liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223340A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268112A (en) * | 2018-09-18 | 2019-01-25 | 浙江锦佳汽车零部件有限公司 | High adaptive on-demand feed flow urea pump assembly |
| WO2020062244A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆软件科技有限公司 | Diaphragm pump and agricultural unmanned aerial vehicle |
| WO2020062245A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆软件科技有限公司 | Diaphragm pump and agricultural unmanned aerial vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201212463Y (en) * | 2008-07-08 | 2009-03-25 | 刘万松 | Compartment drug supplying pump |
| CN102062070A (en) * | 2010-03-30 | 2011-05-18 | 苏州派格力减排系统有限公司 | Plunger type metering ejector pump for emission reduction system |
| WO2011141277A1 (en) * | 2010-05-11 | 2011-11-17 | Robert Bosch Gmbh | Metering pump |
| CN103814212A (en) * | 2011-08-22 | 2014-05-21 | 康明斯排放处理公司 | Urea solution pumps having leakage bypass |
| CN106224213A (en) * | 2016-09-30 | 2016-12-14 | 罗凯缤 | A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure |
| CN206158970U (en) * | 2016-10-24 | 2017-05-10 | 武汉优利可科技有限公司 | SCR urea sprays diaphragm pump |
| CN107246376A (en) * | 2017-07-12 | 2017-10-13 | 浙江卡韦德新能源科技有限公司 | Diesel motor exhaust handles the diaphragm assembly of urea pump |
-
2017
- 2017-12-29 CN CN201711488162.4A patent/CN108223340A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201212463Y (en) * | 2008-07-08 | 2009-03-25 | 刘万松 | Compartment drug supplying pump |
| CN102062070A (en) * | 2010-03-30 | 2011-05-18 | 苏州派格力减排系统有限公司 | Plunger type metering ejector pump for emission reduction system |
| WO2011141277A1 (en) * | 2010-05-11 | 2011-11-17 | Robert Bosch Gmbh | Metering pump |
| CN103814212A (en) * | 2011-08-22 | 2014-05-21 | 康明斯排放处理公司 | Urea solution pumps having leakage bypass |
| CN106224213A (en) * | 2016-09-30 | 2016-12-14 | 罗凯缤 | A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure |
| CN206158970U (en) * | 2016-10-24 | 2017-05-10 | 武汉优利可科技有限公司 | SCR urea sprays diaphragm pump |
| CN107246376A (en) * | 2017-07-12 | 2017-10-13 | 浙江卡韦德新能源科技有限公司 | Diesel motor exhaust handles the diaphragm assembly of urea pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268112A (en) * | 2018-09-18 | 2019-01-25 | 浙江锦佳汽车零部件有限公司 | High adaptive on-demand feed flow urea pump assembly |
| WO2020062244A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆软件科技有限公司 | Diaphragm pump and agricultural unmanned aerial vehicle |
| WO2020062245A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆软件科技有限公司 | Diaphragm pump and agricultural unmanned aerial vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |