CN207583580U - A kind of positive displacement pump - Google Patents
A kind of positive displacement pump Download PDFInfo
- Publication number
- CN207583580U CN207583580U CN201721301516.5U CN201721301516U CN207583580U CN 207583580 U CN207583580 U CN 207583580U CN 201721301516 U CN201721301516 U CN 201721301516U CN 207583580 U CN207583580 U CN 207583580U
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- pump housing
- positive displacement
- eccentric wheel
- air inlet
- motor
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Abstract
The utility model discloses a kind of positive displacement pump, including：The pump housing, the pump housing is fixedly arranged at the front end with middle cover, and middle cover is fixedly arranged at the front end with protecgulum, and middle cover and protecgulum offer air inlet and gas outlet, air inlet diaphragm is equipped between the air inlet of protecgulum and the air inlet of middle cover, outlet diaphragm is equipped between the gas outlet of protecgulum and the gas outlet of middle cover；The shell of motor is fixedly connected with the lower surface of the pump housing, and the motor shaft of motor is fixed with an eccentric wheel on the pump housing, the motor shaft of motor from bottom to top, and eccentric wheel is arranged on the inside of the pump housing；One end of piston is cyclic structure, and the other end of piston is a connecting rod, and cyclic structure is set in outside eccentric wheel, and cyclic structure is rotatably connected with eccentric wheel；Connecting rod is fixed with leather cup and pressing plate, outer rim and the pump housing slidable connection of leather cup relative to the other end of cyclic structure.The utility model reduces small product size and cost, to adapt to specific final assembly demand, adapts to increasingly fierce market competition by optimizing structure design.
Description
Technical field
Technical field more particularly to a kind of positive displacement pump the utility model is related to pump.
Background technology
The operation principle of this electric-motor pump is moved with motor circumference, using the device of machinery, in the pump housing
Portion's leather cup is back and forth run, and the air in pump chamber is made to expand and compress, and under pressure differential effect, gas can be inhaled into and discharge
Pump chamber.
Utility model content
It is led to the problem of for above-mentioned, the purpose of this utility model is to provide one kind can be applied to the food such as beer brewing machine drink
Expect the positive displacement pump of industry.
To achieve these goals, the technical solution that the utility model is taken is：
A kind of positive displacement pump, wherein, including：The pump housing, the pump housing are fixedly arranged at the front end with middle cover, and the front end of the middle cover is fixed
There is a protecgulum, the middle cover and the protecgulum offer air inlet and gas outlet, the air inlet of the protecgulum and the middle cover
Air inlet diaphragm is equipped between air inlet, outlet diaphragm is equipped between the gas outlet of the protecgulum and the gas outlet of the middle cover；Electricity
Machine, the shell of the motor are fixedly connected with the lower surface of the pump housing, and the motor shaft of the motor is from bottom to top through described
The pump housing is fixed with an eccentric wheel on the motor shaft of the motor, and the eccentric wheel is arranged on the inside of the pump housing；Piston, institute
The one end for stating piston is cyclic structure, and the other end of the piston is a connecting rod, and the cyclic structure is set in the eccentric wheel
Outside, the cyclic structure is rotatably connected with the eccentric wheel；Leather cup and pressing plate, the connecting rod is relative to the cyclic structure
The other end is fixed with the leather cup and the pressing plate, the outer rim of the leather cup and the pump housing slidable connection.
Above-mentioned positive displacement pump, wherein, sunk screw is further included, the sunk screw sequentially passes through the pressing plate, the skin
The end of bowl and the connecting rod.
Above-mentioned positive displacement pump, wherein, steel bushing is further included, the steel bushing is arranged on the inside of the pump housing, the steel bushing
Lateral surface is fixedly connected with the inner surface of the pump housing, the medial surface of the steel bushing and the cup packing ground slidable connection.
Above-mentioned positive displacement pump, wherein, the motor shaft of the motor is axially through the eccentric wheel, the side of the eccentric wheel
Face is equipped with a holding screw, and the end of thread of the holding screw runs through the side of the eccentric wheel and is butted on the side of the motor shaft
Face.
Above-mentioned positive displacement pump, wherein, bearing is equipped between the eccentric wheel and the piston.
Above-mentioned positive displacement pump, wherein, it is adopted between the eccentric wheel and the bearing, between the bearing and the piston
With interference fit.
Above-mentioned positive displacement pump, wherein, the pump housing is additionally provided with a upper cover for being easily installed the motor.
Above-mentioned positive displacement pump, wherein, the air inlet diaphragm and the outlet diaphragm are diaphragm type one-way valve, the air inlet
In diaphragm and the outlet diaphragm are generally aligned in the same plane.
Above-mentioned positive displacement pump, wherein, the leather cup uses PTFE (Polytetrafluoroethylene, polytetrafluoroethyl-ne
Alkene) material.
As a result of above-mentioned technology, the good effect for being allowed to have compared with prior art is the utility model：
(1) the utility model reduces small product size and cost, to adapt to specific final assembly by optimizing structure design
Demand adapts to increasingly fierce market competition.And modularization, seriation are can adapt to meet different industries, equipment need
It asks.
(2) the utility model realizes sealing by the cooperation of stainless steel inner cavity and polytetrafluoroethylene (PTFE) leather cup, prevents the pump housing from becoming
To the influence of sealing effect after shape.
Description of the drawings
Fig. 1 is the front section view of the positive displacement pump of the utility model.
Fig. 2 is the side sectional view of the positive displacement pump of the utility model.
Fig. 3 is the explosive view of the positive displacement pump of the utility model.
Fig. 4 is the explosive view of the positive displacement pump of the utility model.
Fig. 5 is the stereogram of the positive displacement pump of the utility model.
In attached drawing：1st, the pump housing；11st, upper cover；2nd, middle cover；21st, outlet catch；3rd, protecgulum；31st, air inlet catch；32nd, air inlet
Mouth；33rd, outlet nozzle；41st, air inlet diaphragm；42nd, outlet diaphragm；5th, motor；6th, eccentric wheel；61st, holding screw；62nd, bearing；7th, it is living
Plug；71st, ring mechanism；72nd, connecting rod；8th, leather cup；9th, pressing plate；91st, sunk screw；10th, steel bushing.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
Fig. 1 is the front section view of the positive displacement pump of the utility model, and Fig. 2 is the side, sectional of the positive displacement pump of the utility model
Figure, refers to shown in Fig. 1 to Fig. 2, shows a kind of positive displacement pump of preferred embodiment, including：The pump housing 1, the front end of the pump housing 1 are fixed
There is middle cover 2, middle cover 2 is fixedly arranged at the front end with protecgulum 3, and middle cover 2 and protecgulum 3 offer air inlet and gas outlet, the air inlet of protecgulum 3
Air inlet diaphragm 41 is equipped between mouth and the air inlet of middle cover 2, outlet is equipped between the gas outlet of protecgulum 3 and the gas outlet of middle cover 2
Diaphragm 42.
In addition, as a kind of preferred embodiment, positive displacement pump further includes：Motor 5, the shell of motor 5 and the following table of the pump housing 1
Face is fixedly connected, and the motor shaft of motor 5 is fixed with an eccentric wheel 6 on the pump housing 1, the motor shaft of motor 5 from bottom to top, eccentric
Wheel 6 is arranged on the inside of the pump housing 1.
In addition, as a kind of preferred embodiment, positive displacement pump further includes：Piston 7, one end of piston 7 is cyclic structure 71,
The other end of piston 7 is a connecting rod 72, and cyclic structure 71 is set in outside eccentric wheel 6, and cyclic structure 72 rotatably connects with eccentric wheel 6
It connects.
Further, as a kind of preferred embodiment, positive displacement pump further includes：Leather cup 8 and pressing plate 9, connecting rod 72 is relative to ring
The other end of shape structure 71 is fixed with leather cup 8 and pressing plate 9, outer rim and 1 slidable connection of the pump housing of leather cup 8.Pass through turning for motor 5
Dynamic band movable eccentric wheel 6 rotates, so as to which piston 7 be driven to move back and forth, then realize leather cup 8 and pressing plate 9 back and forth back and forth
Movement.
Further, as a kind of preferred embodiment, positive displacement pump further includes：Sunk screw 91, sunk screw 91 is successively
Through the end of pressing plate 9, leather cup 8 and connecting rod 72.
Further, as a kind of preferred embodiment, positive displacement pump further includes：Steel bushing 10, steel bushing 10 are arranged on the pump housing 1
Inside, the lateral surface of steel bushing 10 are fixedly connected with the inner surface of the pump housing 1, and the medial surface of steel bushing 10 and leather cup 8 are hermetically slidably
Connection.
The foregoing is merely the utility model preferred embodiment, not thereby limit the utility model embodiment and
Protection domain.
The utility model also has on the basis of the above is implemented as follows mode：
Fig. 3 is the explosive view of the positive displacement pump of the utility model, and Fig. 4 is the explosive view of the positive displacement pump of the utility model, and Fig. 5 is
The stereogram of the positive displacement pump of the utility model, continuing with referring to shown in Fig. 1 to Fig. 5.
In the further embodiment of the utility model, continuing with referring to shown in Fig. 1 to Fig. 3, the motor shaft of motor 5 is in an axial direction
Through eccentric wheel 6, the side of eccentric wheel 6 is equipped with a holding screw 61, and the end of thread of holding screw 61 runs through the side of eccentric wheel 6
And it is butted on the side of motor shaft.
In the further embodiment of the utility model, bearing 62 is equipped between eccentric wheel 6 and piston 7, it will by bearing 62
Sliding friction between eccentric wheel 6 and piston 7 is changed into rolling friction.
In the further embodiment of the utility model, adopted between eccentric wheel 6 and bearing 62, between bearing 62 and piston 7
With interference fit.
In the further embodiment of the utility model, the pump housing 1 is additionally provided with a upper cover 11 for being easily installed motor.
Fig. 3 is the explosive view of the positive displacement pump of the utility model, and Fig. 4 is the explosive view of the positive displacement pump of the utility model, please be joined
As shown in Fig. 1 to Fig. 4.
In the further embodiment of the utility model, air inlet diaphragm 41 and outlet diaphragm 42 are diaphragm type one-way valve, into
In air film piece 41 and outlet diaphragm 42 be generally aligned in the same plane, cost and compact-sized is reduced.
In the further embodiment of the utility model, air inlet catch 31, air inlet are integrally equipped at the air inlet of protecgulum 3
The valve block of diaphragm 41 is right against air inlet catch 31.When positive displacement pump air inlet, the lower section of the valve block of air inlet diaphragm 41 into Fig. 3, Fig. 4
Movement, the air inlet of middle cover 2 and the air inlet of protecgulum 3 are opened, and realize air inlet；When positive displacement pump not air inlet, air inlet diaphragm 41
Upper direction of the valve block into Fig. 3, Fig. 4, be butted on air inlet catch 31 and block the air inlet of protecgulum 3, prevent outlet so as to
Realize the function of one-way air inlet.
In the further embodiment of the utility model, outlet catch 21, outlet are integrally equipped at the gas outlet of middle cover 2
The valve block of diaphragm 42 is right against outlet catch 21.When positive displacement pump is vented, the top of the valve block of outlet diaphragm 42 into Fig. 3, Fig. 4
Movement, the gas outlet of middle cover 2 and the gas outlet of protecgulum 3 are opened, and realize exhaust；When positive displacement pump is not vented, outlet diaphragm 42
Moved beneath of the valve block into Fig. 3, Fig. 4, be butted on outlet catch 21 and block the gas outlet on middle cover 2, prevent air inlet from
And realize the function of unidirectional outlet.
In the further embodiment of the utility model, be additionally provided with suction nozzle 32 and outlet nozzle 33 on protecgulum 3, suction nozzle 32 with
The air inlet of protecgulum 3 is connected, and outlet nozzle 33 is connected with the gas outlet of protecgulum 3.
In the further embodiment of the utility model, leather cup 8 uses PTFE materials, and upper cover 11, middle cover 2 and protecgulum 3 are equal
High temperature resistant, corrosion-resistant using PPS (Polyphenylenesulphide, polyphenylene sulfide) material, mechanical performance is good, has and is not easy
The characteristics of deformation.The pump housing 1 and steel bushing 10 are unlikely to deform using stainless steel, and sealing effect is good, properties of product and service life compared with
It is good.
In the further embodiment of the utility model, upper cover 11, middle cover 2 and protecgulum 3 use plastic article Shooting Technique,
The pump housing 1 uses hardware dies compression moulding, and steel bushing 10 uses metal cutting processes.
In the further embodiment of the utility model, motor 5 uses brushless motor, long lifespan, low noise, large torque.
In the further embodiment of the utility model, the working media of the positive displacement pump of the utility model is gas.
The foregoing is merely the utility model preferred embodiment, not thereby limit the utility model embodiment and
Protection domain to those skilled in the art, should can appreciate that all in the utility model specification and diagram
Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in
In enclosing.
Claims (9)
1. a kind of positive displacement pump, which is characterized in that including：
The pump housing, the pump housing are fixedly arranged at the front end with middle cover, and the middle cover is fixedly arranged at the front end with protecgulum, the middle cover and the protecgulum
Air inlet and gas outlet are offered, air inlet diaphragm, institute are equipped between the air inlet of the protecgulum and the air inlet of the middle cover
It states and outlet diaphragm is equipped between the gas outlet of protecgulum and the gas outlet of the middle cover；
Motor, the shell of the motor are fixedly connected with the lower surface of the pump housing, and the motor shaft of the motor passes through from bottom to top
The pump housing is worn, an eccentric wheel is fixed on the motor shaft of the motor, the eccentric wheel is arranged on the inside of the pump housing；
Piston, one end of the piston is cyclic structure, and the other end of the piston is a connecting rod, and the cyclic structure is set in
Outside the eccentric wheel, the cyclic structure is rotatably connected with the eccentric wheel；
Leather cup and pressing plate, the connecting rod are fixed with the leather cup and the pressing plate, institute relative to the other end of the cyclic structure
State the outer rim of leather cup and the pump housing slidable connection.
2. positive displacement pump according to claim 1, which is characterized in that further include sunk screw, the sunk screw passes through successively
Wear the end of the pressing plate, the leather cup and the connecting rod.
3. positive displacement pump according to claim 1, which is characterized in that further include steel bushing, the steel bushing is arranged on the pump housing
Inside, the lateral surface of the steel bushing is fixedly connected with the inner surface of the pump housing, the medial surface of the steel bushing and the leather cup
Hermetically slidable connection.
4. positive displacement pump according to claim 1, which is characterized in that the motor shaft of the motor is axially through the bias
Wheel, the side of the eccentric wheel are equipped with a holding screw, and the end of thread of the holding screw runs through the side of the eccentric wheel simultaneously
It is butted on the side of the motor shaft.
5. positive displacement pump according to claim 1, which is characterized in that bearing is equipped between the eccentric wheel and the piston.
6. positive displacement pump according to claim 5, which is characterized in that between the eccentric wheel and the bearing, the bearing
Using interference fit between the piston.
7. positive displacement pump according to claim 1, which is characterized in that the pump housing is additionally provided with one and is easily installed the motor
Upper cover.
8. positive displacement pump according to claim 1, which is characterized in that the air inlet diaphragm and the outlet diaphragm are diaphragm
In formula check valve, the air inlet diaphragm and the outlet diaphragm are generally aligned in the same plane.
9. positive displacement pump according to claim 1, which is characterized in that the leather cup uses PTFE materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301516.5U CN207583580U (en) | 2017-09-30 | 2017-09-30 | A kind of positive displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301516.5U CN207583580U (en) | 2017-09-30 | 2017-09-30 | A kind of positive displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583580U true CN207583580U (en) | 2018-07-06 |
Family
ID=62728817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721301516.5U Active CN207583580U (en) | 2017-09-30 | 2017-09-30 | A kind of positive displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583580U (en) |
-
2017
- 2017-09-30 CN CN201721301516.5U patent/CN207583580U/en active Active
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