CN207048967U - A kind of air master valve applied on Pneumatic double diaphragm pump - Google Patents
A kind of air master valve applied on Pneumatic double diaphragm pump Download PDFInfo
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- CN207048967U CN207048967U CN201721041363.5U CN201721041363U CN207048967U CN 207048967 U CN207048967 U CN 207048967U CN 201721041363 U CN201721041363 U CN 201721041363U CN 207048967 U CN207048967 U CN 207048967U
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Abstract
The utility model proposes a kind of air master valve applied on Pneumatic double diaphragm pump.The air master valve includes valve body, installed in the left end cap of valve body left end, installed in the right end cap of valve body right-hand member, the first valve core housing, the second valve core housing, isolation back-up ring, thrust axle sleeve in valve body, the valve element that can be moved left and right in the first valve core housing and the second valve core housing, the thrust axis that can be moved left and right in thrust axle sleeve, the flap moved on valve element together with valve element, the reversing plate of plane contact is remained with flap；First chamber, surrounded by the left surface of left end cap, the first sliding sleeve endoporus and valve element；Second chamber, surrounded by valve body, reversing plate, the first sliding sleeve, the second sliding sleeve；3rd chamber, surrounded by left side wall, the thrust axis of the right side wall of valve element, the endoporus of the second sliding sleeve, isolation back-up ring；4th chamber, surrounded by the endoporus of the right side wall of isolation back-up ring, thrust axis, thrust axle sleeve；5th chamber, surrounded by the right side wall of thrust axis, the endoporus of thrust axle sleeve, right end cap.
Description
Technical field
The utility model belongs to barrier film pump technical field.
Background technology
Pneumatic double diaphragm pump is a kind of novel conveyer tool, is a kind of pump class of current latest domestic grain husk.Using compressed gas
Body is power source, for various corruption property liquid, the liquid with particle, and high viscosity, volatile, inflammable, hypertoxic liquid, equal energy
Taken out light exhaustion.The operation principle of Pneumatic double diaphragm pump is：Two air chambers of membrane pump constantly alternately fill, row pressure contracting is empty
Gas, drive two fluid chambers of membrane pump to replace inspiration, discharge liquid, and then realize membrane pump and constantly aspirate and convey liquid
Body.Two air chambers of membrane pump alternately fill, arrange compressed air, are realized by the air master valve of membrane pump.
Current Pneumatic double diaphragm pump at work, is sudden shut off if compressed air is supplied, or compressed air source
When pressure is very low, the valve element of the air master valve of Pneumatic double diaphragm pump is easy to stop at the centre position of its stroke, causes pneumatic
Twin-diaphragm pump hang-up can not restart, that is, " dead point " occur, if along with frequently starting, stopping, more aggravating
The probability of occurrence at " dead point ";In addition, the sealing ring of the air master valve of ordinary construction uses radial seal form, valve element do it is past
When moving again, sealing ring is easy to be scratched by the air-vent on valve core housing and pulled, and sealing ring also easily wears, if work gas
There is dirt impurity in source, can more aggravate to wear, it is also necessary to which periodically addition lubricant is worn with reducing.
The content of the invention
The utility model purpose is to propose a kind of air master valve applied on Pneumatic double diaphragm pump, and the air master valve can
Effectively avoid the valve element of air master valve from resting on the centre position of stroke, and then effectively avoid " dead point " of membrane pump from occurring；Separately
For the primary sealing member of the outer air master valve using ceramics, seal form is that planar slide seals, and such a structure has wear-resisting, certainly
Lubrication, resistant it is antifouling, suitable for harsh source of the gas environment, need not periodically add the advantages that lubricant
It is achieved by the following technical solution, a kind of air master valve applied to Pneumatic double diaphragm pump, including valve body,
Installed in the left end cap of valve body left end, installed in the right end cap of valve body right-hand member, the first valve core housing, the second valve in valve body
Core retainer plate, isolation back-up ring, thrust axle sleeve, the valve element that can be moved left and right in the first valve core housing and the second valve core housing can be in thrust axis
The thrust axis moved left and right in set, the flap moved on valve element together with valve element, plane contact is remained with flap
Reversing plate；First chamber, surrounded by the left surface of left end cap, the first sliding sleeve endoporus and valve element；Second chamber, by valve body, change
Surrounded to plate, the first sliding sleeve, the second sliding sleeve；3rd chamber, by the right side wall of valve element, the endoporus of second sliding sleeve, isolation back-up ring
Left side wall, thrust axis surround；4th chamber, surrounded by the endoporus of the right side wall of isolation back-up ring, thrust axis, thrust axle sleeve；5th
Chamber, surrounded by the right side wall of thrust axis, the endoporus of thrust axle sleeve, right end cap.
The second chamber is connected by the air interface on valve body with compressed air source；The company of being provided with the valve element
Groove, first chamber is connected with second chamber, therefore first chamber is also to be connected with compressed air source.
For the first chamber in the left side of the valve element, this chamber is logical due to being connected to compressed air source, therefore this
Compressed air in chamber produces thrust to the right to valve element all the time；3rd chamber and the 5th chamber are in the valve element
Right side, the two chambers are connected by the elongated hole set on thrust axis, and the air pressure of two chambers is identical, with gas
The commutation back and forth of the air pilot valve of dynamic twin-diaphragm pump, pilot valve fill compressed air to the 3rd chamber being connected and the 5th chamber
Or row's compressed air, it is alternately to fill compressed air and row's compressed air；4th chamber and Pneumatic double diaphragm pump
Total exhaust outlet is connected, and the pressure in the 4th chamber is zero（Gauge pressure）.
First Y shape circle is installed on the valve element, the second Y shape circle is installed on barrier film back-up ring, is provided with thrust axis
Three Y shape circles.
The first working hole, steam vent, the second working hole are disposed with the reversing plate；First working hole and the second work
Make hole respectively with the air chamber of left and right two of Pneumatic double diaphragm pump to be connected, alternately fill/arrange to being attached thereto logical air chamber
Compressed air, the barrier film of membrane pump is driven to move reciprocatingly back and forth；Steam vent is connected with total exhaust outlet of Pneumatic double diaphragm pump.
The first intercommunicating pore is provided with the valve body, by the intercommunicating pore, the air pilot valve of membrane pump to be connected
Three chambers and the 5th chamber alternately fill/arranged compressed air, that is, send commutation signal；The second connection is additionally provided with the valve body
4th chamber is connected by hole, the intercommunicating pore with total exhaust outlet of Pneumatic double diaphragm pump.
The flap and the reversing plate, using ceramic material, remain close contact, drive of the flap in valve element
Under, reciprocatingly slided on reversing plate, form planar slide dynamic sealing between the two.
A shrinkage pool is provided with the flap.
The utility model is relative to advantage possessed by prior art：Pneumatic double diaphragm pump connects compressed air and starts work
After work, no matter how the pilot valve of Pneumatic double diaphragm pump acts, in the utility model air master valve on the left of the valve element
First chamber, to valve element synergy, is always produced with the 3rd chamber being connected on the right side of valve element and the 5th chamber to valve element
A raw thrust to the left or to the right, promotes valve element to be accordingly moved to the maximum position of stroke, completes commutation, avoids valve element from stopping
Stay in " centre position " of stroke, so avoid Pneumatic double diaphragm pump hang-up, can not the unexpected situation such as pneumatic again；
Meanwhile the primary sealing member flap and reversing plate of air master valve of the present utility model use ceramic material, seal form is flat
Face slippage sealing of elastoplastic in relative motion dust seal, the sealing ring that avoids ordinary construction is not wear-resisting, sealing ring is easily scratched and pulls, needs periodically addition profit
The drawbacks of lubrication prescription.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.It is it should be evident that attached in description below
Figure is some embodiments of the utility model, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
1-a in Fig. 1 is the structural representation of Pneumatic double diaphragm pump;Fig. 1-b are the utility model air master valve schematic diagram,
For clear its structure of expression, the position of air valve core of main valve is in the centre position of its stroke in the figure；
Fig. 2 is that the valve element of Pneumatic double diaphragm pump air master valve moves the schematic diagram to be commutated from left to right；
Fig. 3 is that the valve element of Pneumatic double diaphragm pump air master valve moves the schematic diagram to be commutated from right to left.
As above each figure：1- valve bodies；2- left end caps；3- right end caps；The valve core housings of 4- first；The valve core housings of 5- second；6- isolation gears
Circle；7- thrust axle sleeves；8- valve elements；9- thrust axis；10- flaps；11- reversing plates；12- the first Y shape circles；13- the second Y shape circles；14-
3rd Y shape circle；101- first chambers；102- second chambers；The chambers of 103- the 3rd；The chambers of 104- the 4th；The chambers of 105- the 5th；
106- air interfaces；107- connectivity slots；108- elongated holes；The working holes of 109- first；110- steam vents；The working holes of 111- second；
The intercommunicating pores of 112- first；The intercommunicating pores of 113- second；114- shrinkage pools；201- pump inlets；The left fluid chambers of 202-；The left air chambers of 203-；
The left barrier films of 204-；205- pump discharges；The right air chambers of 206-；The right barrier films of 207-；The right fluid chambers of 208-；209- air master valves.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, it is necessary to which explanation is：Term " first ", " second ",
" the 3rd ", " the 4th ", " the 5th " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Embodiment one,
With reference to figure 1, Fig. 2 and Fig. 3, the utility model proposes a kind of air master valve applied to Pneumatic double diaphragm pump.Should
Air master valve includes valve body 1, installed in the left end cap 2 of valve body left end, installed in the right end cap 3 of valve body right-hand member, installed in valve body
In the first valve core housing 4, the second valve core housing 5, isolation back-up ring 6, thrust axle sleeve 7, can be in the first valve core housing 4 and the second valve core housing 5
The valve element 8 inside moved left and right, the thrust axis 9 that can be moved left and right in thrust axle sleeve 7, is started shipment on valve element 8 with valve element one
Dynamic flap 10, the reversing plate 11 of plane contact is remained with flap 10；First chamber 101, by left end cap 2, the first sliding sleeve 4
The left surface of endoporus and valve element 8 surrounds；Second chamber 102, surrounded by valve body 1, reversing plate 11, the first sliding sleeve 4, the second sliding sleeve 5；
3rd chamber 103, surrounded by left side wall, the thrust axis 9 of the right side wall of valve element 8, the endoporus of the second sliding sleeve 5, isolation back-up ring 6；The
Four chambers 104, surrounded by the endoporus of the right side wall of isolation back-up ring 6, thrust axis 9, thrust axle sleeve 7；5th chamber 105, by thrust
The right side wall of axle 9, the endoporus of thrust axle sleeve 7, right end cap 3 surround.
The second chamber 102 in the present embodiment is connected by the air interface 106 on valve body with compressed air source；
Connectivity slot 107 is provided with the valve element 8, first chamber 101 is connected with second chamber 102, therefore first chamber 101 is also
It is connected with compressed air source.
The first chamber 101 in the present embodiment is in the left side of the valve element 8, and this chamber due to being with compressed air source
It is connected, therefore the compressed air in this chamber produces thrust to the right to valve element 8 all the time；3rd chamber 103 and
Five chambers 105 are connected in the right side of the valve element 8, the two chambers by the elongated hole 108 set on thrust axis 9, two
The air pressure of chamber is identical, and with the commutation back and forth of the air pilot valve of Pneumatic double diaphragm pump, pilot valve is to being connected
The 3rd chamber 103 and the 5th chamber 105 fill compressed air or row compressed air, fill compressed air and row compressed air be alternating
Carry out；4th chamber 104 is connected with total exhaust outlet of Pneumatic double diaphragm pump, and the pressure in the 4th chamber 104 is zero
（Gauge pressure）.
First Y shape circle 12 is installed on the valve element 8 in the present embodiment, isolates on back-up ring 6 and second Y shape circle is installed
13, the 3rd Y shape circle 14 is installed on thrust axis 9.
The first working hole 109 is disposed with the reversing plate 11 in the present embodiment, steam vent 110, second works
Hole 111；First working hole 109 and the second working hole 111 air chamber 203 of left and right two with Pneumatic double diaphragm pump, 206 phases respectively
Connection, alternately to be attached thereto logical air chamber fill/arrange compressed air, drive the barrier film of membrane pump to move reciprocatingly back and forth；
Steam vent 110 is connected with total exhaust outlet of Pneumatic double diaphragm pump.
The first intercommunicating pore 112 is provided with the valve body in the present embodiment, by the intercommunicating pore, the air of membrane pump is first
Pilot valve alternately fills/arranged compressed air to the 3rd chamber 103 being connected and the 5th chamber 105, that is, sends commutation signal；The valve
The second intercommunicating pore 113 is additionally provided with body 1, the 4th chamber 104 is connected by the intercommunicating pore with total exhaust outlet of Pneumatic double diaphragm pump
It is logical.
The flap 10 and the reversing plate 11 in the present embodiment, using ceramic material, remain close contact, valve
Valve 10 is under the drive of valve element 8, and 11 reciprocatingly slide on reversing plate, forms planar slide dynamic sealing between the two.
A shrinkage pool 114 is provided with the flap in the present embodiment.
Next, elaborate the operation principle for the air master valve being applied on Pneumatic double diaphragm pump：
Process one, with reference to figure 2, process that the valve element of Pneumatic double diaphragm pump air master valve moves from left to right：
The pilot valve of Pneumatic double diaphragm pump is carried out to the 3rd chamber 103 being connected on the right side of valve element and the 5th chamber 105
Compressed air is emptied, now the compressed air in the two chambers is emptied by pilot valve, and the air pressure of two intracavitary is zero（Table
Pressure）, it is zero to the active force of valve element 8 and thrust axis 9 to the left；First chamber 101 on the left of valve element connects with compressed air source all the time
It is logical, therefore the air pressure in first chamber 101 is the pressure of compressed air, active force to the right to valve element 8 be present, promotes valve
Core 8 moves right, and the flap 10 on valve element 8 enters to the right line slip, directly under the drive of valve element 8 on reversing plate 11
To maximum travel position is slided into the right, commutation is completed.After commutation, the first working hole 109 on reversing plate 11 connects the second chamber
Room 102, i.e., connected with compressed air source, therefore the air chamber of the first working hole 109 to coupled logical membrane pump is filled
Compressed air；Meanwhile the second working hole 111 on reversing plate 11 is connected by the shrinkage pool 114 on flap 10 with steam vent 110,
The air chamber for that Pneumatic double diaphragm pump being thus connected with the second working hole 111 carries out row's compressed air.By upper pneumatic double
Two air chambers of membrane pump establish a pressure differential, and the pressure differential drives the barrier film of Pneumatic double diaphragm pump to enter along pressure difference direction
Row motion, and then drive two fluid chambers of Pneumatic double diaphragm pump to be aspirated and conveyed liquid.
Process two, with reference to figure 3, process that the valve element of Pneumatic double diaphragm pump air master valve moves from right to left：
The pilot valve of Pneumatic double diaphragm pump is carried out to the 3rd chamber 103 being connected on the right side of valve element 8 and the 5th chamber 105
Compressed air is filled, now the two chambers are due to having filled compressed air, and the compressed air in the 3rd chamber 103 is directly to valve element 8
Produce thrust to the left；Similarly the compressed air in the 5th chamber 105 also produces thrust to the left to thrust axis 9, and the power
Valve element is passed to by thrust axis, i.e. the 5th chamber 105 also produces thrust to the left to valve element 8, thus the 3rd chamber 103 and
Five chambers 105 produce thrust to the left to valve element 8.First chamber 101 on the left of valve element communicates with compressed air source, should
Pressure in chamber is compressed air pressure, and active force to the right is produced to valve element 8.It should be evident that first chamber 101 is to valve
The thrust of core 8 to the right is less than the 3rd chamber 103 and the 5th chamber 105 jointly to the thrust to the left of valve element 8, thus valve element 8 exists
It is moved to the left under conjunction thrust to the left, the flap 10 on valve element 8, under the drive of valve element 8, on reversing plate 11
Planar slide is done to the left, until sliding into the maximum position of stroke to the left, completes commutation.After commutation, second on reversing plate 11
Working hole 111 connect second chamber 102, i.e., with compressed air source connect, therefore the second working hole 111 to it is coupled it is logical every
The air chamber of membrane pump carries out filling compressed air；Meanwhile the first working hole 109 on reversing plate 11 passes through the shrinkage pool on flap 10
114 are connected with steam vent 110, thus the air chamber for that Pneumatic double diaphragm pump being connected with the first working hole 109 is arranged
Compressed air.A pressure differential with the opposite direction of process one is established by two air chambers of upper Pneumatic double diaphragm pump, band is taken offence
The barrier film of dynamic twin-diaphragm pump is moved along the direction opposite with process one, and then continues to drive two of Pneumatic double diaphragm pump
Liquid is aspirated and conveyed to fluid chamber.
To sum up, after membrane pump connects compressed air start-up operation, no matter how the pilot valve of Pneumatic double diaphragm pump acts, this
First chamber 101 positioned at the left side of valve element 8 and the be connected the 3rd on the right side of valve element 8 in utility model air master valve
The chamber 105 of chamber 103 and the 5th always produces a thrust to the left or to the right to valve element, promoted to the synergy of valve element 8
Valve element 8 is accordingly moved to the maximum position of stroke, completes commutation, avoids valve element 8 from resting on " centre position " of stroke, and then keep away
Exempted from Pneumatic double diaphragm pump hang-up, can not the unexpected situation such as pneumatic again；Meanwhile air master valve of the present utility model
Primary sealing member flap 10 and reversing plate 11 use ceramic material, and seal form is planar slide dynamic sealing, avoid common
The sealing ring of structure is not wear-resisting, sealing ring is easily scratched and pulls, need to periodically add the drawbacks of lubricant.
Above example is only illustrating the technical solution of the utility model, rather than is limited；Although with reference to before
Embodiment is stated the utility model is described in detail, for the person of ordinary skill of the art, still can be right
Technical scheme described in previous embodiment is modified, or carries out equivalent substitution to which part technical characteristic；And these
Modifications or substitutions, do not make appropriate technical solution essence depart from the utility model technical scheme claimed spirit and
Scope.
Claims (5)
- A kind of 1. air master valve applied on Pneumatic double diaphragm pump, it is characterised in thatThe air master valve includes valve body 1, installed in the left end cap 2 of valve body left end, installed in the right end cap 3 of valve body right-hand member, installation The first valve core housing 4, the second valve core housing 5, isolation back-up ring 6, thrust axle sleeve 7 in valve body, can be in the first valve core housing 4 and the second valve The valve element 8 moved left and right in core retainer plate 5, the thrust axis 9 that can be moved left and right in thrust axle sleeve 7, on valve element 8 with valve element one The flap 10 of motion is played, the reversing plate 11 of plane contact is remained with flap 10；First chamber 101, by left end cap 2, first The left surface of the endoporus of sliding sleeve 4 and valve element 8 surrounds；Second chamber 102, by valve body 1, reversing plate 11, the first sliding sleeve 4, the second sliding sleeve 5 Surround；3rd chamber 103, enclosed by left side wall, the thrust axis 9 of the right side wall of valve element 8, the endoporus of the second sliding sleeve 5, isolation back-up ring 6 Into；4th chamber 104, surrounded by the endoporus of the right side wall of isolation back-up ring 6, thrust axis 9, thrust axle sleeve 7；5th chamber 105, by The right side wall of thrust axis 9, the endoporus of thrust axle sleeve 7, right end cap 3 surround.
- 2. the air master valve according to claim 1 applied on Pneumatic double diaphragm pump, it is characterised in thatThe second chamber 102 is connected by the air interface 106 on valve body with compressed air source；It is provided with the valve element 8 Connectivity slot 107, first chamber 101 is connected with second chamber 102, therefore first chamber 101 is also to be connected with compressed air source Logical；For the first chamber 101 in the left side of the valve element 8, this chamber is logical due to being connected to compressed air source, therefore this Compressed air in chamber produces thrust to the right to valve element 8 all the time；3rd chamber 103 and the 5th chamber 105 are in institute The right side of valve element 8 is stated, the two chambers are connected by the elongated hole 108 set on thrust axis 9, and the air pressure of two chambers is Identical, with the commutation back and forth of the air pilot valve of Pneumatic double diaphragm pump, pilot valve is to the 3rd chamber 103 being connected and Five chambers 105 fill compressed air or row's compressed air, and it is alternately to fill compressed air and row's compressed air；4th chamber Room 104 is connected with total exhaust outlet of Pneumatic double diaphragm pump, and the pressure in the 4th chamber 104 is zero（Gauge pressure）.
- 3. the air master valve according to claim 2 applied on Pneumatic double diaphragm pump, it is characterised in thatFirst Y shape circle 12 is installed on the valve element 8, isolates on back-up ring 6 and second Y shape circle 13 is installed, be provided with thrust axis 9 3rd Y shape circle 14.
- 4. the air master valve according to claim 3 applied on Pneumatic double diaphragm pump, it is characterised in thatThe first working hole 109, steam vent 110, the second working hole 111 are disposed with the reversing plate 11；First working hole 109 and second working hole 111 be connected respectively with the air chamber of left and right two 203,206 of Pneumatic double diaphragm pump, alternately to The air chamber being connected fill/arrange compressed air, drive the barrier film of membrane pump to move reciprocatingly back and forth；Steam vent 110 with it is pneumatic Total exhaust outlet of twin-diaphragm pump is connected.
- 5. the air master valve according to claim 4 applied on Pneumatic double diaphragm pump, it is characterised in thatThe flap 10 and the reversing plate 11, using ceramic material, remain close contact, band of the flap 10 in valve element 8 Under dynamic, 11 reciprocatingly slide on reversing plate, form planar slide dynamic sealing between the two；Be provided with the flap one it is recessed Hole 114.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721041363.5U CN207048967U (en) | 2017-08-19 | 2017-08-19 | A kind of air master valve applied on Pneumatic double diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721041363.5U CN207048967U (en) | 2017-08-19 | 2017-08-19 | A kind of air master valve applied on Pneumatic double diaphragm pump |
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| Publication Number | Publication Date |
|---|---|
| CN207048967U true CN207048967U (en) | 2018-02-27 |
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ID=61503251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721041363.5U Active CN207048967U (en) | 2017-08-19 | 2017-08-19 | A kind of air master valve applied on Pneumatic double diaphragm pump |
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| CN (1) | CN207048967U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111771063A (en) * | 2019-01-31 | 2020-10-13 | 威尔顿泵业工程公司 | Pump assembly |
| CN112049782A (en) * | 2020-08-17 | 2020-12-08 | 杭州南方赛珀工业设备有限公司 | Air charging and discharging structure and method of pneumatic diaphragm pump capable of discharging air quickly |
-
2017
- 2017-08-19 CN CN201721041363.5U patent/CN207048967U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111771063A (en) * | 2019-01-31 | 2020-10-13 | 威尔顿泵业工程公司 | Pump assembly |
| CN112049782A (en) * | 2020-08-17 | 2020-12-08 | 杭州南方赛珀工业设备有限公司 | Air charging and discharging structure and method of pneumatic diaphragm pump capable of discharging air quickly |
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