CN207048966U - A kind of pilot reversing valve applied on Pneumatic double diaphragm pump - Google Patents
A kind of pilot reversing valve applied on Pneumatic double diaphragm pump Download PDFInfo
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- CN207048966U CN207048966U CN201721041065.6U CN201721041065U CN207048966U CN 207048966 U CN207048966 U CN 207048966U CN 201721041065 U CN201721041065 U CN 201721041065U CN 207048966 U CN207048966 U CN 207048966U
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Abstract
The utility model proposes a kind of pilot reversing valve applied on Pneumatic double diaphragm pump.This pilot reversing valve includes valve body（A part for the pump housing of membrane pump）Left end cap and right end cap installed in the left and right both ends of valve body, the first sliding sleeve, the second sliding sleeve, the slide bar that can be slidably reciprocated in sliding sleeve in valve body, the flap together slided on slide bar and with slide bar, are in contact to form the reversing plate of planar slide dynamic sealing with flap；Left end cap, the endoporus of the first sliding sleeve, the left surface of slide bar define first chamber, and slide bar, the first sliding sleeve, the second sliding sleeve, valve body, reversing plate define second chamber, and the right flank of slide bar, the endoporus of the second sliding sleeve, right end cap define the 3rd chamber.The slide bar of this pilot reversing valve is under the promotion of the diaphragm assembly of Pneumatic double diaphragm pump, carry out in commutation process, first chamber positioned at the slide bar side and the 3rd chamber effect positioned at the slide bar opposite side, the pressure differential in some direction can be produced to slide bar, the pressure differential promotes slide bar quickly correctly to commutate.
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 alternately to inhale, discharging liquid, and then realize membrane pump and constantly aspirate and convey liquid.
Two air chambers of membrane pump alternately fill, arrange compressed air, are commutated to and fro realization by the air master valve of membrane pump, and
The commutation of membrane pump air master valve is to be sent to commutation signal after being commutated by the pilot reversing valve of membrane pump, and air master valve connects
The commutation signal of pilot valve is received, is commutated.
The slide bar commutation whole process of current most of Pneumatic double diaphragm pump pilot reversing valves is only to lean on diaphragm assembly
Promote what is carried out, accelerate to commutate without other strength, commutating speed is slower with respect to this new structure, and unreliable, and membrane pump plays
Do not go out optimum performance；And the sealing ring on slide bar is easy to wear, short life, particularly slide bar reciprocatingly slide commutation when, need
The air-vent to pass through on sliding sleeve, it is easy to scratched by air-vent scratch, if source of the gas is more severe, have impurity dirt, also very
Easily sealing ring is scratched, current most of pilot reversing valves also need to regularly add lubricant to reduce abrasion.
The content of the invention
The utility model proposes pilot reversal valve, the slide bar of the reversal valve can be allowed to commutate rapidly；Also, the commutation
Valve employs the ceramic material with high-wearing feature and self lubricity, thus also solve common pilot reversing valve sealing ring intolerant to
Mill, easy scratch, need the drawbacks of periodically addition lubricant.It is achieved by the following technical solution, and one kind is applied to gas
The pilot reversing valve of dynamic twin-diaphragm pump, applied on Pneumatic double diaphragm pump, the pilot reversing valve includes valve body（The membrane pump pump housing
A part）, left end cap and right end cap installed in the left and right both ends of valve body, the first sliding sleeve, the second sliding sleeve in valve body,
The slide bar that can be slidably reciprocated in the first sliding sleeve, the second sliding sleeve, the flap together slided on slide bar and with slide bar, with valve
Valve is in contact to form the reversing plate of planar slide dynamic sealing, left feeler lever, the right feeler lever being respectively arranged on left and right end cap, two
Feeler lever can axially move under the promotion of membrane pump diaphragm assembly, so as to promote slide bar to move；First chamber, by left end cap,
The endoporus of first sliding sleeve, the left surface of slide bar surround；Second chamber, by slide bar, the first sliding sleeve, the second sliding sleeve, valve body, reversing plate
Surround；3rd chamber, surrounded by the right flank of slide bar, the endoporus of the second sliding sleeve, right end cap.
The first working hole, steam vent, the second working hole are disposed with the reversing plate；First chamber is provided with first
Intercommunicating pore, it is connected with the first working hole；3rd chamber is provided with the second intercommunicating pore, is connected with the second working hole；Reversing plate
On steam vent be connected with total steam vent of membrane pump.
The first chamber passes through the first work on the first intercommunicating pore and reversing plate in the left side of the slide bar, the chamber
Hole is connected；The second chamber is to be connected with compressed air source, and second chamber is filled with compressed air；Described 3rd
Chamber is connected in the right side of the slide bar, the chamber by the second intercommunicating pore with the second working hole on reversing plate.Work as slide bar
The first chamber being sequentially located at when the promotion of barrier film is moved to certain position at left and right sides of slide bar and the 3rd chamber, wherein
One enters compressed air, and another then discharges compressed air, and a pressure differential, the pressure are quickly formed at left and right sides of slide bar
Power difference promotes slide bar to commutate rapidly.
The second working hole on the reversing plate（Or first working hole）, while the control also with the air master valve of membrane pump
Chamber is connected, with the commutation of pilot reversing valve, the second working hole（Or first working hole）Replace to the control chamber of air master valve
Ground fills, arranges compressed air, i.e., sends commutation signal, driving air master valve commutation to air master valve.
The flap and the reversing plate use ceramic material, and flap is past on reversing plate under the drive of the slide bar
It is multiple to slide, go between the two into planar slide dynamic sealing.
The first Y sealing rings and the second Y shape circle are provided with the slide bar;Shrinkage pool is provided with the flap.
The utility model is relative to advantage possessed by prior art：The slide bar of pilot reversing valve of the present utility model
The left and right sides is each provided with a chamber, i.e. first chamber and the 3rd chamber respectively, and wherein first chamber is located at the left side of slide bar,
3rd chamber is located at the right side of slide bar, and when the pilot reversing valve commutates, slide bar pushes away in the diaphragm assembly of Pneumatic double diaphragm pump
It is dynamic when being moved to certain position, the one of chamber inflating pressure of the two chambers, another chamber then exhaust pressure relief, make
A pressure differential is quickly formed at left and right sides of slide bar, the pressure differential quickly promotes slide bar to commutate；Other reversal valve sealing shape
Formula is planar slide dynamic sealing, and main seal part flap and reversing plate employ ceramics, has self lubricity, wear-resisting, close
Envelope is reliable, suitable for harsh source of the gas environment, solve common pilot reversing valve sealing ring is unreliable, sealing ring is not wear-resisting,
The drawbacks of being easily scraped off, needing periodically to add lubricant, be high to work source of the gas requirement.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1-a in Fig. 1 are the structural representation of the utility model Pneumatic double diaphragm pump；Fig. 1-b are that the utility model is first
Reversal valve schematic diagram is led, the position of the slide bar of pilot reversing valve is in the centre position of its stroke in the figure；
Fig. 2 is the barrier film of membrane pump from the schematic diagram for moving left to right process；
Fig. 3 is the barrier film of membrane pump from the schematic diagram for being shifted to the right to left process.
As above each figure：1- valve bodies；2- left end caps；3- right end caps；The sliding sleeves of 4- first；The sliding sleeves of 5- second；6- slide bars；7- valves
Valve；8- reversing plates；The left feeler levers of 9-；The right feeler levers of 10-；11- the first Y shape circles；12- the second Y shape circles；101- first chambers；102-
Two chambers；The chambers of 103- the 3rd；The working holes of 104- first；105- steam vents；The working holes of 106- second；The intercommunicating pores of 107- first；
The intercommunicating pores of 108- second；109- 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 discharge；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 " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Embodiment one,
With reference to figure 1-b, Fig. 2 and Fig. 3, the utility model proposes a kind of pilot reversing valve, applied to Pneumatic double diaphragm pump.
The pilot reversing valve includes valve body 1（A part for the membrane pump pump housing）, left end cap 2 and right-hand member installed in the left and right both ends of valve body
Lid 3, the first sliding sleeve 4, the second sliding sleeve 5 in valve body, the slide bar that can be slidably reciprocated in the first sliding sleeve 4, the second sliding sleeve 5
6, the flap 7 together slided on slide bar 6 and with slide bar, it is in contact to form the commutation of planar slide dynamic sealing with flap 7
Plate 8, left feeler lever 9, the right feeler lever 10 being respectively arranged on left and right end cap, two feeler levers are under the promotion of membrane pump diaphragm assembly
It can axially move, so as to promote slide bar 6 to move；First chamber 101, by left end cap 2, the endoporus of the first sliding sleeve 4, slide bar 6
Left surface surrounds；Second chamber 102, surrounded by slide bar 6, the first sliding sleeve 4, the second sliding sleeve 5, valve body 1, reversing plate 8；3rd chamber
103, surrounded by the right flank of slide bar 6, the endoporus of the second sliding sleeve 5, right end cap 3.
The first working hole 104, steam vent 105, the second working hole 106 are disposed with the reversing plate 8 of the present embodiment；The
One chamber 101 is provided with the first intercommunicating pore 107, is connected with the first working hole 104；3rd chamber 103 is provided with the second connection
Hole 108, it is connected with the second working hole 106；Steam vent 105 on reversing plate 8 is connected with total steam vent of membrane pump..
The first chamber 101 of the present embodiment passes through the first intercommunicating pore 107 and commutation in the left side of the slide bar 6, the chamber
The first working hole 104 on plate 8 is connected；Second chamber 102 is to be connected with compressed air source, is full of in second chamber
Compressed air；3rd chamber 103 passes through the second intercommunicating pore 108 and the second work on reversing plate in the right side of slide bar 6, the chamber
Make hole 106 to be connected.When slide bar 6 is moved to certain position in the promotion of barrier film, be sequentially located at left and right sides of slide bar
One chamber 101 and the 3rd chamber 103, one of them enters compressed air, and another then discharges compressed air, a left side for slide bar 6
Right both sides quickly form a pressure differential, and the pressure differential promotes slide bar to commutate rapidly.
The second working hole 106 on the reversing plate 8 of the present embodiment（Or first working hole 104）, while also with membrane pump
The control chamber of air master valve 209 is connected, with the commutation of pilot reversing valve, the second working hole 106（Or first working hole 104）
Alternately filled to the control chamber of air master valve 209, arrange compressed air, i.e., send commutation signal to air master valve, drive air master
Valve commutates.
The flap 7 and reversing plate 8 of the present embodiment use ceramic material, under the drive of flap 7 and slide bar 6, on reversing plate 8
Reciprocatingly slide, flap 7 and reversing plate 8 remain contact, and both manage it into planar slide dynamic sealing.
The first Y sealing rings 11 and the second Y shape circle 12 are provided with the slide bar 6 of the present embodiment；Shrinkage pool is provided with flap 7
109。
Next the pilot reversing valve operation principle being applied on Pneumatic double diaphragm pump is illustrated：
With reference to figure 2, the barrier film of membrane pump is from moving left right process:
Left barrier film 204 promotes left feeler lever 9 to move right, and then left feeler lever 9 promotes slide bar 6 and the valve being fixed on slide bar 6
Valve 7 is moved right, and when slide bar 6 moves right to certain position, the first working hole 104 on reversing plate 8 is opened with second chamber 102
Begin to connect, and first chamber 101 is connected to logical, thus now the first chamber by the first intercommunicating pore 107 and the first working hole 104
Room 101 starts to connect with second chamber 102, and then the compressed air in second chamber 102 enters first chamber 101, the first chamber
Room starts to pressurize；At the same time, the second working hole 106 on reversing plate 8 passes through on the shrinkage pool 109 on flap 7 and reversing plate
Steam vent 105 starts to connect, and the 3rd chamber 103 be connected to by the second intercommunicating pore 108 and the second working hole 106 it is logical, because
And now the 3rd chamber 103 starts to connect with the steam vent 105 on reversing plate 8, and then the compressed air in the 3rd chamber 103 is opened
Begin to discharge pressure release.By upper, the first chamber 101 and the two chambers of the 3rd chamber 103 of the left and right sides of slide bar 6 quickly form one to
Right pressure differential, in the presence of the pressure differential, slide bar 6 slides into the right maximum travel position rapidly, now on reversing plate 8
Second working hole 106（Or first working hole 104）Also because slide bar 6 moves right to rapidly maximum travel position, at utmost
Ground conveys commutation signal to the air master valve 209 of membrane pump, and driving air master valve 209 commutates rapidly.
In the process, flap 7 remains plane contact with reversing plate 8, forms slippage sealing of elastoplastic in relative motion dust seal, flap 7 is in slide bar 6
Drive under slided to the right on reversing plate 8, until move right to maximum travel position.
With reference to figure 3, the barrier film of membrane pump is from the process for being shifted to the right to a left side:
Right barrier film 207 promotes right feeler lever 10 to be moved to the left, and then right feeler lever 10 promotes slide bar 6 and is fixed on slide bar 6
Flap 7 is moved to the left, when slide bar 6 is moved to the left to certain position, the second working hole 106 and second chamber 102 on reversing plate 8
Begin to turn on, and the 3rd chamber 103 be connected to by the second intercommunicating pore 108 and the second working hole 106 it is logical, thus now the 3rd
Chamber 103 starts to connect with second chamber 102, and then the compressed air in second chamber 102 enters the 3rd chamber 103, and the 3rd
Chamber starts to pressurize；At the same time, the first working hole 104 on reversing plate 8 passes through on the shrinkage pool 109 on flap 7 and reversing plate
Steam vent 105 start to connect, and first chamber 101 be connected to by the first intercommunicating pore 107 and the first working hole 104 it is logical,
Thus now first chamber 101 starts to connect with the steam vent 105 on reversing plate 8, and then the compressed air in first chamber 101
Start to discharge pressure release.By upper, first chamber 101 and threeth chamber 103 two chambers of the slide bar 6 in the left and right sides quickly form one
Individual pressure differential to the left, under the differential pressure action, slide bar 6 slides into maximum travel position to the left rapidly, now on reversing plate 8
Second working hole 106（Or first working hole 104）Also because slide bar 6 is moved to the left to rapidly maximum travel position, at utmost
Ground conveys commutation signal to the air master valve 209 of membrane pump, and driving air master valve 209 commutates rapidly to another direction.
In the process, flap 7 remains plane contact with reversing plate 8, forms slippage sealing of elastoplastic in relative motion dust seal, flap 7 is in slide bar 6
Drive under slided to the left on reversing plate 8, until be moved to the left to maximum travel position.
With the commutation back and forth of pilot reversing valve of the present utility model, the second working hole 106 on reversing plate 8（Or the
One working hole 104）Alternately fill/be vented to the control chamber of coupled logical membrane pump air master valve, that is, send commutation signal, make
Air master valve alternating reciprocating reversing is obtained, the alternating reciprocating reversing of air master valve causes the left and right air chamber of membrane pump alternately fill, arrange
Gas, and then the left and right fluid chamber of membrane pump is alternately arranged, imbibition body, finally realize that membrane pump is continuously drawn into liquid, continuously
Output liquid.
To sum up, the left and right sides of slide bar 6 of pilot reversing valve of the present utility model is respectively arranged with a chamber, i.e. the first chamber
The chamber 103 of room 101 and the 3rd, when the slide bar 6 of the pilot reversing valve starts to commutate, when moving to the certain position of stroke, this two
The individual one of inflating pressure of chamber, another chamber vent pressure release so that the left and right sides of slide bar 6 quickly forms a pressure
Power is poor, and the pressure differential quickly promotes slide bar 6 to commutate rapidly so that slide bar 6 moves quickly into the maximum position of stroke, and maintains
Position is motionless, reliable, quick commutation signal is provided to the air master valve of membrane pump, until the pilot reversing valve is round about
Next time commutation；It is additionally, since seal form of the present utility model and employs planar slide dynamic sealing, primary sealing member flap
7 and reversing plate 8 use ceramic material, solve that current most of membrane pump pilot reversing valves sealing is unreliable, sealing ring holds
Easy to wear, scratch, non-resistant, the drawbacks of lubricant need to be periodically added, substantially increase sealing property and life-span.
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 (6)
- A kind of 1. pilot reversing valve applied on Pneumatic double diaphragm pump, it is characterised in thatThe pilot reversing valve includes valve body（A part for the membrane pump pump housing）, left end cap and the right side installed in the left and right both ends of valve body End cap, the first sliding sleeve, the second sliding sleeve in valve body, the slide bar that can be slidably reciprocated in the first sliding sleeve, the second sliding sleeve, peace The flap together slided on slide bar and with slide bar, it is in contact to form the reversing plate of planar slide dynamic sealing with flap, respectively Left feeler lever, the right feeler lever being arranged on left and right end cap, two feeler levers can move vertically under the promotion of membrane pump diaphragm assembly It is dynamic, so as to promote slide bar to move；First chamber, surrounded by the left surface of left end cap, the endoporus of the first sliding sleeve, slide bar；Second chamber Room, surrounded by slide bar, the first sliding sleeve, the second sliding sleeve, valve body, reversing plate；3rd chamber, by the right flank of slide bar, the second sliding sleeve Endoporus, right end cap surrounds.
- 2. the pilot reversing valve according to claim 1 applied on Pneumatic double diaphragm pump, it is characterised in that the commutation The first working hole, steam vent, the second working hole are disposed with plate；First chamber is provided with the first intercommunicating pore, with the first work It is connected as hole；3rd chamber is provided with the second intercommunicating pore, is connected with the second working hole；Steam vent and barrier film on reversing plate Total steam vent of pump is connected.
- 3. the pilot reversing valve according to claim 2 applied on Pneumatic double diaphragm pump, it is characterised in that described first Chamber is connected in the left side of the slide bar, the chamber by the first intercommunicating pore with the first working hole on reversing plate；Described Two chambers are to be connected with compressed air source, and second chamber is filled with compressed air；3rd chamber is in the slide bar Right side, the chamber is connected by the second intercommunicating pore with the second working hole on reversing plate；When slide bar is under the promotion of barrier film The first chamber being sequentially located at when being moved to certain position at left and right sides of slide bar and the 3rd chamber, it is one of to enter compression sky Gas, another then discharges compressed air, and a pressure differential is quickly formed at left and right sides of slide bar, and the pressure differential promotes slide bar fast Quick change to.
- 4. the pilot reversing valve according to claim 3 applied on Pneumatic double diaphragm pump, it is characterised in that the commutation The second working hole on plate（Or first working hole）, while the control chamber also with the air master valve of membrane pump is connected, with elder generation Lead the commutation of reversal valve, the second working hole（Or first working hole）Alternately filled to the control chamber of air master valve, arrange compressed air, Commutation signal, driving air master valve commutation are sent to air master valve.
- 5. the pilot reversing valve according to claim 4 applied on Pneumatic double diaphragm pump, it is characterised in that the flap Ceramic material is used with the reversing plate, flap reciprocatingly slides on reversing plate under the drive of the slide bar, gone between the two Into planar slide dynamic sealing.
- 6. the pilot reversing valve according to claim 5 applied on Pneumatic double diaphragm pump, it is characterised in that the slide bar On be provided with the first Y sealing rings and the second Y shape circle；Shrinkage pool is provided with the flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721041065.6U CN207048966U (en) | 2017-08-19 | 2017-08-19 | A kind of pilot reversing valve applied on Pneumatic double diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721041065.6U CN207048966U (en) | 2017-08-19 | 2017-08-19 | A kind of pilot reversing valve applied on Pneumatic double diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048966U true CN207048966U (en) | 2018-02-27 |
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ID=61503303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721041065.6U Active CN207048966U (en) | 2017-08-19 | 2017-08-19 | A kind of pilot reversing valve applied on Pneumatic double diaphragm pump |
Country Status (1)
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| CN (1) | CN207048966U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111033962A (en) * | 2018-09-30 | 2020-04-17 | 深圳市大疆软件科技有限公司 | Motor and agricultural plant protection machine of diaphragm pump |
| 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 |
| CN112943586A (en) * | 2021-04-13 | 2021-06-11 | 凯龙高科技股份有限公司 | Diaphragm pump is carried and is prevented taking out integrated unit |
-
2017
- 2017-08-19 CN CN201721041065.6U patent/CN207048966U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111033962A (en) * | 2018-09-30 | 2020-04-17 | 深圳市大疆软件科技有限公司 | Motor and agricultural plant protection machine of diaphragm pump |
| CN111033962B (en) * | 2018-09-30 | 2022-04-22 | 深圳市大疆软件科技有限公司 | Motor and agricultural plant protection machine of diaphragm pump |
| 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 |
| CN112943586A (en) * | 2021-04-13 | 2021-06-11 | 凯龙高科技股份有限公司 | Diaphragm pump is carried and is prevented taking out integrated unit |
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