CN208595039U - A kind of eccentric shaft urea pump - Google Patents
A kind of eccentric shaft urea pump Download PDFInfo
- Publication number
- CN208595039U CN208595039U CN201821269668.6U CN201821269668U CN208595039U CN 208595039 U CN208595039 U CN 208595039U CN 201821269668 U CN201821269668 U CN 201821269668U CN 208595039 U CN208595039 U CN 208595039U
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- China
- Prior art keywords
- eccentric shaft
- fixed
- bearing
- eccentric
- diaphragm
- Prior art date
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Abstract
The utility model discloses a kind of eccentric shaft urea pumps, including pump case, the fixed eccentric shaft of rotation in the pump case, the intermediate throughholes of eccentric shaft cover on the motor shaft of stepper motor, stepper motor is fixedly connected by motor connecting base with pump case, one end of eccentric shaft is fixed on pump case by spring bearing, the other end of eccentric shaft is fixed on bearing gland by bearing support bearing, bearing gland is fixed on the left side wall of pump case, the fixed capacity eccentric bearing in eccentric position of eccentric shaft, the outer ring of capacity eccentric bearing is arranged pendular ring, the fixed pull ring in the top of pendular ring, the fixed diaphragm in the top of pendular ring；The rotary motion of motor is changed into the up and down motion of pendular ring by the eccentric shaft of the utility model setting by eccentric shaft, and the pull ring of pendular ring moves up and down to move up and down with dynamic diaphragm, so that urea pump suction action is realized, to achieve the purpose that transport urea liquid.
Description
Technical field
The utility model relates to a kind of suction pump field, specifically a kind of eccentric shaft urea pump.
Background technique
Urea pump is the important component of urea liquid injection metering system, and major function is in extracted urea case
Urea liquid, and certain pressure is kept, it is then delivered to injection unit, meets injection metering system and flow and pressure is wanted
It asks, during controlling exhaust emissions of diesel engine, usually will use selective catalytic reduction (SCR) technology, SCR device foundation
Nitrogen hydrogen reduction basic principle, the aqueous solution of urea for being 32.5% using mass fraction is as reducing agent, in catalyst surface coating
Under catalytic action, by the nitrogen oxide reduction in exhaust gas at nitrogen and water, urea pump is the core component of SCR system.
Urea pump cost of manufacture currently on the market is high, and most of working principles for being all made of centrifugal pump, centrifugal pump
Transported liquid is filled before starting, in pump case, after starting, impeller drives high-speed rotation by axis, and interlobate liquid is also necessary
With rotation, under the influence of centrifugal force, liquid is thrown to outer rim from impeller center and obtains energy, to leave impeller outer at a high speed
Edge enters volute pump case, and in spiral case, liquid slows down due to being gradually expanded for runner, and part kinetic energy is changed into static pressure
Can, discharge line is finally flowed into higher pressure, is sent to needing place, but the energy consumption of this centrifugal pump is larger, impeller uses
Service life is shorter, and maintenance cost is high, it would therefore be desirable to a kind of new-type urea pump installation.
Utility model content
The purpose of this utility model is to provide a kind of eccentric shaft urea pumps, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the utility model provides the following technical solutions:
A kind of eccentric shaft urea pump, including pump case, pendular ring, eccentric shaft, bearing gland, motor connecting base, stepper motor,
Diaphragm, the interior fixed eccentric shaft of rotation of the pump case, the intermediate throughholes of the eccentric shaft cover on the motor shaft of stepper motor,
The stepper motor is fixedly connected by motor connecting base with pump case, and one end of the eccentric shaft is fixed on pump by spring bearing
On shell, the other end of the eccentric shaft is fixed on bearing gland by bearing support bearing, and the bearing gland is fixed on pump
On the left side wall of shell, the fixed capacity eccentric bearing in eccentric position of the eccentric shaft, the outer ring of the capacity eccentric bearing is arranged swing
Ring, the fixed pull ring in the top of the pendular ring, the fixed diaphragm in the top of the pendular ring.
As a further solution of the present invention: the eccentricity of the eccentric shaft is 0.5mm.
The eccentric shaft material is nylon PA66 moulding as a further solution of the present invention,.
The top of the diaphragm is equipped with raw pressing plate, the raw pressing plate and film as a further solution of the present invention,
Set Packed cavity between piece, the cavity it is sealed around diaphragm seal circle, the cavity top be equipped with valve port, the valve
Mouthful be surrounded by non-return piece sealing ring, non-return piece be installed on the valve port, the top closure of the raw pressing plate disengaging plate, institute
It states disengaging plate and is equipped with the inlet and outlet being connected with exterior line, the inlet and outlet of the disengaging plate pass through non-return piece and raw pressing plate bottom
Cavity be connected, it is described disengaging plate inlet and outlet and non-return piece junction between be equipped with small sealing ring.
The diaphragm is made of rubber material as a further solution of the present invention,.
Stainless steel platen, the stainless steel are equipped at the top of the disengaging plate as a further solution of the present invention,
Pressing plate is by the raw pressing plate of bolt presses and passes in and out plate and is fixed on the surrounding of pump case.
Compared with prior art, the utility model has the beneficial effects that the excentric sleeve of the utility model setting is in motor
On axis, the rotary motion of motor is changed into the up and down motion of pendular ring, the pull ring up and down motion band of pendular ring by eccentric shaft
Dynamic diaphragm moves up and down, to realize urea pump suction action, to achieve the purpose that transport urea liquid, wherein eccentric shaft is changed
For nylon PA moulding, more previous metal processing piece has saved 90% cost, and device structure is ingenious simple, maintenance side
Just.
Detailed description of the invention
Fig. 1 is the Structure explosion diagram of eccentric shaft urea pump.
Fig. 2 is eccentric shaft urea pump overall package molding structure schematic diagram.
Fig. 3 is the structural schematic diagram of eccentric shaft in eccentric shaft urea pump.
In figure: pump case 1, pendular ring 2, pull ring 20, eccentric shaft 3, spring bearing 30, capacity eccentric bearing 31, bearing gland 4, electricity
Machine attachment base 5, stepper motor 6, diaphragm 7, raw pressing plate 8, disengaging plate 9, stainless steel platen 10, diaphragm seal circle 11, small sealing ring
12, non-return piece sealing ring 13, non-return piece 14.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Please refer to Fig. 1~3, in the utility model embodiment, a kind of eccentric shaft urea pump, including pump case 1, pendular ring 2, partially
Mandrel 3, bearing gland 4, motor connecting base 5, stepper motor 6, diaphragm 7, the interior fixed eccentric shaft 3 of rotation of the pump case 1 are described
The intermediate throughholes of eccentric shaft 3 cover on the motor shaft of stepper motor 6, and the stepper motor 6 passes through motor connecting base 5 and pump case
1 is fixedly connected, and one end of the eccentric shaft 3 is fixed on pump case 1 by spring bearing 30, and the other end of the eccentric shaft 3 is logical
It crosses bearing support bearing 30 to be fixed on bearing gland 4, the bearing gland 4 is fixed on the left side wall of pump case 1, the bias
The fixed capacity eccentric bearing 31 in the eccentric position of axis 3, the outer ring of the capacity eccentric bearing 31 are arranged pendular ring 2, the pendular ring 2
The fixed pull ring 20 in top, the fixed diaphragm 7 in the top of the pendular ring 2；
The eccentricity of the eccentric shaft 3 is 0.5mm；
3 material of eccentric shaft is nylon PA66 moulding；
The top of the diaphragm 7 is equipped with raw pressing plate 8, sets Packed cavity between the raw pressing plate 8 and diaphragm 7, described
Cavity it is sealed around diaphragm seal circle 11, the cavity top be equipped with valve port, the valve port is surrounded by non-return piece sealing ring
13, non-return piece 14 is installed on the valve port, the top closure of the raw pressing plate 8 disengaging plate 9, the disengaging plate 9 be equipped with
The inlet and outlet of the inlet and outlet being connected with exterior line, the disengaging plate 9 are connected by non-return piece 14 with the cavity of raw 8 bottom of pressing plate
It is logical, small sealing ring 12 is equipped between 14 junction of inlet and outlet and non-return piece of the disengaging plate 9；
The diaphragm 7 is made of rubber material, and the diaphragm 7 utilizes the good elasticity of rubber material, by transporting up and down
The dynamic function of reaching suction.
The working principle of the utility model is: the rotation of stepper motor 6 will pass through the eccentric band movable pendulum of eccentric shaft 3 when work
Rotating ring 2 moves up and down, and diaphragm 7 is fixed on the pull ring 20 at 2 top of pendular ring, then pendular ring 2 just moves up and down with dynamic diaphragm 7
It moves up and down, the amount of exercise of diaphragm 7 is twice of the eccentricity of eccentric shaft 3, i.e., 1 millimeter, gives birth to 8 lower cavity of pressing plate and diaphragm 7
Cooperation cooperates the inlet and outlet interacted on either on or off disengaging plate 9 by valve port with the non-return piece 14 on top；
When diaphragm 7 moves downward, the non-return piece 14 of disengaging 9 upper inlet of plate is opened, and passes in and out the non-return piece 14 of 9 upper outlet of plate
It closes, urea liquid is entered in the cavity between raw pressing plate 8 and diaphragm 7 by passing in and out the import of plate 9, it is moved upwards with rear film 7,
Import is closed in the rebound of non-return piece 14 for passing in and out 9 import of plate, and the non-return piece 14 that disengaging plate 9 exports is opened, and urea liquid passes through outlet
Discharge.
Embodiment 2
The present embodiment the difference from embodiment 1 is that:
Stainless steel platen 10 is equipped at the top of the disengaging plate 9, the stainless steel platen 10 passes through raw 8 He of pressing plate of bolt presses
Disengaging plate 9 and the surrounding for being fixed on pump case 1.
Working principle of the utility model is: the stainless steel platen 10 can reduce 9 disengaging caused by the high pressure because of inside
The deformation of oralia and raw pressing plate 8.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of eccentric shaft urea pump, including pump case (1), pendular ring (2), eccentric shaft (3), bearing gland (4), motor connecting base
(5), stepper motor (6), diaphragm (7), which is characterized in that the fixed eccentric shaft (3) of rotation, the bias in the pump case (1)
The intermediate throughholes of axis (3) cover on the motor shaft of stepper motor (6), the stepper motor (6) by motor connecting base (5) with
Pump case (1) is fixedly connected, and one end of the eccentric shaft (3) is fixed on pump case (1) by spring bearing (30), the eccentric shaft
(3) the other end is fixed on bearing gland (4) by bearing support bearing (30), and the bearing gland (4) is fixed on pump case
(1) on left side wall, the fixed capacity eccentric bearing in eccentric position (31) of the eccentric shaft (3), the capacity eccentric bearing (31) it is outer
Snare is set pendular ring (2), and the top of the fixed pull ring in top (20) of the pendular ring (2), the pendular ring (2) is fixed
Diaphragm (7).
2. eccentric shaft urea pump according to claim 1, which is characterized in that the eccentricity of the eccentric shaft (3) is
0.5mm。
3. eccentric shaft urea pump according to claim 1, which is characterized in that eccentric shaft (3) material is nylon PA66
Moulding.
4. eccentric shaft urea pump according to claim 1 to 3, which is characterized in that the top of the diaphragm (7) is equipped with
Raw pressing plate (8), set Packed cavity between the raw pressing plate (8) and diaphragm (7), the cavity it is sealed around diaphragm seal
It encloses (11), the cavity top is equipped with valve port, and the valve port is surrounded by non-return piece sealing ring (13), is installed on the valve port
Non-return piece (14), the top closure of the raw pressing plate (8) disengaging plate (9), the disengaging plate (9) be equipped with and exterior line phase
The inlet and outlet of inlet and outlet even, disengaging plate (9) are connected by non-return piece (14) with the cavity of raw pressing plate (8) bottom, institute
It states and is equipped with small sealing ring (12) between the inlet and outlet and non-return piece (14) junction of disengaging plate (9).
5. eccentric shaft urea pump according to claim 4, which is characterized in that the diaphragm (7) is made of rubber material.
6. eccentric shaft urea pump according to claim 4, which is characterized in that be equipped with stainless steel at the top of the disengaging plate (9)
Pressing plate (10), the stainless steel platen (10) is by bolt presses raw pressing plate (8) and disengaging plate (9) and is fixed on pump case (1)
Surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269668.6U CN208595039U (en) | 2018-08-01 | 2018-08-01 | A kind of eccentric shaft urea pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269668.6U CN208595039U (en) | 2018-08-01 | 2018-08-01 | A kind of eccentric shaft urea pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208595039U true CN208595039U (en) | 2019-03-12 |
Family
ID=65604567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821269668.6U Expired - Fee Related CN208595039U (en) | 2018-08-01 | 2018-08-01 | A kind of eccentric shaft urea pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208595039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482750A (en) * | 2021-08-04 | 2021-10-08 | 无锡威孚力达催化净化器有限责任公司 | Urea supply injection system with double-stage injection function |
-
2018
- 2018-08-01 CN CN201821269668.6U patent/CN208595039U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482750A (en) * | 2021-08-04 | 2021-10-08 | 无锡威孚力达催化净化器有限责任公司 | Urea supply injection system with double-stage injection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191009 Address after: West A17, Jiuwei Industrial Park, 2059 Zhonghua West Road, high tech Zone, Heze City, Shandong Province Patentee after: Heze power core electron Science and Technology Ltd. Address before: 274000 Peizhuang 98, Peizhuang Administrative Village, Maji Town, Dingtao County, Heze City, Shandong Province Patentee before: Pei Wen Long |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190312 Termination date: 20200801 |