CN206874463U - A kind of urea pump pumping diaphragm - Google Patents
A kind of urea pump pumping diaphragm Download PDFInfo
- Publication number
- CN206874463U CN206874463U CN201720675274.XU CN201720675274U CN206874463U CN 206874463 U CN206874463 U CN 206874463U CN 201720675274 U CN201720675274 U CN 201720675274U CN 206874463 U CN206874463 U CN 206874463U
- Authority
- CN
- China
- Prior art keywords
- urea pump
- pumping diaphragm
- bolt head
- rubber membrane
- pump pumping
- 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.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model provides a kind of urea pump pumping diaphragm, belongs to urea pump parts technical field.It solves the problems such as existing urea pump pumping diaphragm service behaviour is unstable, easily reveals.This urea pump pumping diaphragm, including fixing bolt and it is arranged at the rubber membrane of fixing bolt upper end, fixing bolt is connected with bolt head by stud and formed, the bottom of bolt head is provided with cooperation step, groove is offered between coordinating at the top of step and bolt head, rubber membrane lower surface has the welt extended downwardly, the middle part insertion groove of welt, and its tail end is with coordinating step to fit, the outer edge of rubber membrane end face has upward, the raised lip in lower both sides, the inner side of lip on the upside of end face is to lower recess, and some shock rings in semicircle shape to raise up are distributed with recess, rubber membrane laid inside has the reinforcement fibrous layers to play a supportive role.The utility model has the advantages that stable performance, is not easy to reveal.
Description
Technical field
The utility model belongs to urea pump parts technical field, is related to a kind of pumping diaphragm, more particularly to a kind of urea pump pump
Film.
Background technology
SCR (SCR) technology for improve because exhaust emissions and caused by environmental pollution played significantly
Effect, urea pump is the core component of SCR system, and its performance and the discharge function of engine have close ties, and urea pump is
Urea liquid sprays the important component of metering system, and its major function is the urea liquid in extracted urea case, and is kept
Certain pressure, is then delivered to injection unit, and NOX is rapid in the tail gas of injection unit injection urea liquid and diesel emission
Reaction generation nitrogen and water, discharges N2 harmless to the human body into air, urea pump pumping diaphragm served in urea pump sealing,
The effect of anti-leak, the most structure of pumping diaphragm on existing market is relatively simple, rubber membrane is directly arranged on bolt, due to diesel oil
Typically between 200-500 DEG C, shape easily occurs the delivery temperature of machine under the working condition of high temperature for traditional urea pump pumping diaphragm
Become, portion gas can be caused to reveal, arranging influences environment into air.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, there is provided a kind of good airproof performance, property
The stable urea pump pumping diaphragm of energy.
The purpose of this utility model can be realized by following technical proposal：A kind of urea pump pumping diaphragm, including fixing bolt
And it is arranged at the rubber membrane of fixing bolt upper end, it is characterised in that described fixing bolt is connected by stud and bolt head
Composition, the bottom of the bolt head are provided with cooperation step, groove are offered between described cooperation step and bolt head top,
Described rubber membrane lower surface has the welt extended downwardly, the middle part insertion groove of the welt, and its tail end is with coordinating
Step fits, and the outer edge of the rubber membrane end face has the raised lip in up and down both sides, and described is located on end face
The inner side of the lip of side is to lower recess, and some shock rings in semicircle shape to raise up, described rubber is distributed with recess
Glued membrane laid inside has the reinforcement fibrous layers to play a supportive role.
In a kind of above-mentioned urea pump pumping diaphragm, offer between described stud and bolt head and tightened when being assembled for pumping diaphragm
Mating groove.
In a kind of above-mentioned urea pump pumping diaphragm, the top perimeter of the bolt head passes through round-corner transition.Set fillet can
To avoid extruding of the fixing bolt periphery to rubber membrane, reduce the damage of rubber membrane.
Compared with prior art, reinforcement fibrous layers are equipped with the rubber membrane of this urea pump pumping diaphragm, enhance pumping diaphragm work
Stability, opened up in bolt head bottom groove for welt be embedded in so that fixing bolt is more bonded with rubber membrane, strengthens pumping diaphragm
Sealing.
Brief description of the drawings
Fig. 1 is the structure schematic cross-sectional view of this urea pump pumping diaphragm
In figure, 1, fixing bolt；2nd, rubber membrane；3rd, stud；4th, bolt head；5th, step is coordinated；6th, welt；7th, reinforcing fibre
Layer；8th, lip；9th, mating groove；10th, groove；11st, shock ring.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in figure 1, this urea pump pumping diaphragm, including fixing bolt 1 and the rubber membrane for being arranged at the upper end of fixing bolt 1
2, fixing bolt 1 is connected by stud 3 and bolt head 4 and formed, and the bottom of bolt head 4, which is provided with, coordinates step 5, coordinate step 5 with
Groove 10 is offered between the top of bolt head 4, the lower surface of rubber membrane 2 has the welt 6 extended downwardly, the middle part insertion of welt 6
Groove 10, and its tail end, with coordinating step 5 to fit, the outer edge of the end face of rubber membrane 2 has up and down both sides projection
Lip 8, lip 8 help pumping diaphragm to slow down edge abrasion while reducing stress impact, improve the service life of pumping diaphragm, be located at
The inner side of lip 8 on the upside of end face is to lower recess, and some shock rings 11 in semicircle shape to raise up are distributed with recess,
The laid inside of rubber membrane 2 has the reinforcement fibrous layers 7 to play a supportive role.
Further describe in detail, the mating groove 9 tightened when being assembled for pumping diaphragm is offered between stud 3 and bolt head 4.
In order to reduce the damage of rubber membrane 2, the periphery at the top of bolt head 4 passes through round-corner transition.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although more used herein fixing bolt 1, rubber membrane 2, stud 3, bolt head 4, coordinate step 5, welt 6,
The terms such as reinforcement fibrous layers 7, lip 8, mating groove 9, groove 10, shock ring 11, but it is not precluded from the possibility using other terms
Property.It is used for the purpose of more easily describing and explaining essence of the present utility model using these terms；It is construed as any
A kind of additional limitation is all disagreed with the utility model spirit.
Claims (3)
1. a kind of urea pump pumping diaphragm, including fixing bolt（1）And it is arranged at fixing bolt（1）The rubber membrane of upper end（2）, its
It is characterised by, described fixing bolt（1）By stud（3）With bolt head（4）Be connected composition, the bolt head（4）Bottom set
It is equipped with cooperation step（5）, described cooperation step（5）With bolt head（4）Groove is offered between top（10）, described rubber
Film（2）Lower surface has the welt extended downwardly（6）, the welt（6）Middle part insertion groove（10）, and its tail end is with matching somebody with somebody
Close step（5）Fit, the rubber membrane（2）The outer edge of end face has the raised lip in up and down both sides（8）, it is described
The lip on the upside of the end face（8）Inner side to lower recess, and recess be distributed with it is some raise up in semicircle shape
Shock ring（11）, described rubber membrane（2）Laid inside has the reinforcement fibrous layers to play a supportive role（7）.
A kind of 2. urea pump pumping diaphragm according to claim 1, it is characterised in that described stud（3）With bolt head（4）It
Between offer the mating groove tightened when being assembled for pumping diaphragm（9）.
A kind of 3. urea pump pumping diaphragm according to claim 1, it is characterised in that the bolt head（4）Top perimeter lead to
Cross round-corner transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720675274.XU CN206874463U (en) | 2017-06-12 | 2017-06-12 | A kind of urea pump pumping diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720675274.XU CN206874463U (en) | 2017-06-12 | 2017-06-12 | A kind of urea pump pumping diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874463U true CN206874463U (en) | 2018-01-12 |
Family
ID=61332699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720675274.XU Expired - Fee Related CN206874463U (en) | 2017-06-12 | 2017-06-12 | A kind of urea pump pumping diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874463U (en) |
-
2017
- 2017-06-12 CN CN201720675274.XU patent/CN206874463U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20200612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |