CN104033365B - Miniature five cylinder membrane pumps - Google Patents
Miniature five cylinder membrane pumps Download PDFInfo
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- CN104033365B CN104033365B CN201410315923.6A CN201410315923A CN104033365B CN 104033365 B CN104033365 B CN 104033365B CN 201410315923 A CN201410315923 A CN 201410315923A CN 104033365 B CN104033365 B CN 104033365B
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Abstract
The open a kind of miniature five cylinder membrane pumps of the present invention, including reflux, pump cover, outlet valve, diaphragm seat, water intaking valve, water proof diaphragm, Pressure Block, bearing holder (housing, cover), bearing, bias, the pump housing and motor casing；Reflux is arranged on pump cover；Outlet valve and water intaking valve are all arranged on diaphragm seat；Motor shaft in motor casing is through the hole, location of the pump housing；Bias is connected on motor shaft, and is arranged in bearing；Bearing is arranged on the locating slot of bearing holder (housing, cover)；Bearing holder (housing, cover) is connected to water proof diaphragm, and Pressure Block is between bearing holder (housing, cover) and water proof diaphragm；Diaphragm seat is connected to water proof diaphragm；It is provided with piston block on water proof diaphragm；Water proof diaphragm and piston block are one-body molded；It is provided with dashpot between water proof diaphragm and piston block.Present invention, avoiding water-separating film sheet to work long hours the fatigability tear caused, the simultaneously the most less workload of motor.
Description
Technical field
The present invention relates to a kind of pump, be specifically related to a kind of miniature five cylinder membrane pumps.
Background technology
As it is shown in figure 1, be miniature two cylinder membrane pumps commonly used on current power sprayer market.Being characterized in that operating current is low, the storage battery used is less, low cost, and peasant bears the lighter in weight of power sprayer.Its shortcoming is that operating pressure is less, inefficiency, and atomizing effect is poor, and the usage amount of pesticide is big, pollutes environment.
Again as in figure 2 it is shown, be the triplex membrane pump of current power sprayer market upper part employing.The motor being characterized in used is big, and operating pressure is high, and atomizing effect is good.Its shortcoming is that operating current is big, and during motor work, caloric value is big, uses storage battery relatively big, and cost is high, the heavier-weight bearing power sprayer of peasant, and membrane pump spoilage is high.Triplex membrane pump includes: motor 31, and motor output shaft is provided with eccentric 30, eccentric 30 and is arranged on bearing 29, and bearing 29 is fixed on bearing holder (housing, cover) 28；Bearing holder (housing, cover) is provided with Pressure Block 27, and water proof diaphragm 26 is screwed on bearing holder (housing, cover) 28 by piston block 25；Water intaking valve 24 and outlet valve 22, through the hole, location of diaphragm seat 23, are fixed on diaphragm seat 23, and 0 type circle 22 is fixed in the groove of diaphragm seat 23；Diaphragm seat 23 is positioned on water proof diaphragm 26, is screwed on Pressure Block 27 by pump cover 20.
With reference to shown in Fig. 3, wherein the end face of outlet valve 22 is concaved circular cambered surface, and the center and peripheral of end face is provided with three reinforcements.Diaphragm seat is provided with corresponding concave arc groove.Outlet valve is met the corrosive substances such as pesticide and swelling reaction is occurred, and gross distortion occurs, and the outlet valve after deformation is not tight with the concave arc groove laminating of diaphragm seat, with reference to shown in Fig. 4, and the situation that build-up of pressure reduces.
As it is shown in figure 5, the water proof diaphragm 26 of triplex membrane pump is screwed on bearing holder (housing, cover) 28 by piston block 25.Sealing between water proof diaphragm 26 and bearing holder (housing, cover) 28 extrudes water proof diaphragm 26 by piston block 25 and bearing holder (housing, cover) 28 common plane and completes.When membrane pump works, piston block 25 and bearing holder (housing, cover) 28 high speed up-down vibration, screw may be made to have loosening, cause the extruding force between piston block 25 and bearing holder (housing, cover) 28 inadequate, situation about leaking between water proof diaphragm 26 and bearing holder (housing, cover) 28 occurs；The most as shown in Figure 6, meet pesticide when water proof diaphragm 26 to react, when water proof diaphragm 26 shrinks thinning, piston block 25 and bearing holder (housing, cover) 28 extrude space invariance, the water that will also result in high pressure enters from the screw hole of piston block 25, flows out between water proof diaphragm 26 and bearing holder (housing, cover), and β is the place that leaks, bearing 29 is caused to get rusty stuck, the situation that motor 31 burns.During the work of triplex membrane pump, motor 31 drives eccentric 30 to rotate, the piston push rod on bearing holder (housing, cover) 28 is made to do up-down vibration together with piston block 25, diaphragm around stretching piston block 25, add load when motor 31 works, cause the fatigability the worked long hours tear as shown in the γ of Fig. 6 of the diaphragm around piston block 25 simultaneously.Water proof diaphragm 26 is met pesticide and is reacted, and after water proof diaphragm 26 shrinks, pump cover 20 extrudes the bossing less than water proof diaphragm 26, causes membrane pump suck, the low situation with shake of operating pressure.
Summary of the invention
The technical problem existed for prior art, the present invention provides miniature five cylinder membrane pumps, water proof diaphragm and piston block make single component in integrated mode, piston block portion at water proof diaphragm is provided with dashpot, avoid water-separating film sheet to work long hours the fatigability tear caused, the simultaneously the most less workload of motor.
In order to solve existing technical problem, the technical solution used in the present invention is:
A kind of miniature five cylinder membrane pumps, include reflux, pump cover, outlet valve, diaphragm seat, water intaking valve, water proof diaphragm, Pressure Block, bearing holder (housing, cover), bearing, bias, the pump housing and motor casing the most successively；Described reflux is arranged on described pump cover；Described outlet valve and water intaking valve are all arranged on described diaphragm seat；Motor shaft in described motor casing is through the hole, location of the described pump housing；Described bias is connected on described motor shaft, and is arranged in described bearing；Described bearing is arranged on the locating slot of described bearing holder (housing, cover)；Described bearing holder (housing, cover) is connected to described water proof diaphragm, and described Pressure Block is between described bearing holder (housing, cover) and water proof diaphragm；Described diaphragm seat is connected to described water proof diaphragm；It is provided with piston block on described water proof diaphragm；Described water proof diaphragm and piston block are one-body molded；It is provided with dashpot between described water proof diaphragm and piston block.
Further, it is provided with O between described water valve and diaphragm seat；Described O is positioned at the groove of described diaphragm seat.
Further, described Pressure Block uses rigidity plastics.
Further, described diaphragm seat and water proof diaphragm form five independent plunger shaft.
Further, the seal line at the bottom groove of described diaphragm seat extrudes the separation post of described water proof diaphragm, forms the first sealing.
Further, the seal line of the bottom margin of described diaphragm seat extrudes at the plane of described water proof diaphragm, defines the second sealing between described plunger shaft and water inlet.
Further, the seal line bottom described pump cover extrudes the bossing of described water proof diaphragm, forms the 3rd sealing.
Further, the seal line of described pump cover bottom margin extrudes the extension of described water proof diaphragm, forms the 4th sealing.
Further, the bottom surface of described water intaking valve is convex arc surface, and the surface of described diaphragm seat is concaved circular cambered surface, is connected between the two, and leaves gap.
Further, the bottom surface of described outlet valve is convex arc surface, and the surface of described diaphragm seat is concaved circular cambered surface, is connected between the two, and leaves gap.
Compared with prior art, the invention has the beneficial effects as follows:
Present invention, avoiding because piston block up-down vibration stretches the Splitting of the water proof diaphragm that surrounding diaphragm causes, enhance the sealing between water proof diaphragm and pump cover, decrease outlet valve simultaneously and meet the situation that pesticide occurs swelling reaction to cause water-aspirator pressure to reduce.The operating pressure of the operating pressure ratio two cylinder membrane pump of miniature five cylinder membrane pumps improves more than 30%, has reached the pesticide materialization effect of triplex membrane pump, has reduced the usage amount of pesticide, has reduced the pesticide pollution to environment；The miniature five cylinder membrane pumps of the present invention use the RRS775 motor identical with two cylinder membrane pumps, and cost is only the 2/5 of the zyt63 motor that triplex membrane pump uses.Miniature five cylinder membrane pump electric currents are the 3/4 of triplex membrane pump, greatly reduce the consumption of the energy, alleviate peasant simultaneously and bear the weight of power sprayer, have boundless market prospect.
Accompanying drawing explanation
Fig. 1 is two cylinder membrane pump explosive view in prior art.
Fig. 2 is triplex membrane pump explosive view in prior art.
Fig. 3 is the outlet valve deformation cross-reference figure of triplex membrane pump in prior art.
Fig. 4 is the assembling section in prior art before and after outlet valve deformation.
Fig. 5 is the water proof diaphragm of triplex membrane pump in prior art, piston block and bearing holder (housing, cover) scheme of installation.
Fig. 6 is the water proof diaphragm of triplex membrane pump in prior art, piston block and bearing holder (housing, cover) assembling section.
Fig. 7 is the water proof diaphragm of the miniature five cylinder membrane pumps of the present invention.
Fig. 8 is outlet valve, the axonometric chart of outlet valve and the profile of the miniature five cylinder membrane pumps of the present invention.
Fig. 9 is the pump cover of the miniature five cylinder membrane pumps of the present invention.
Figure 10 is the miniature five cylinder membrane pump explosive views of the present invention.
Figure 11 is water proof diaphragm, bearing holder (housing, cover) and Pressure Block scheme of installation and the sectional axonometric drawing of the miniature five cylinder membrane pumps of the present invention.
Figure 12 is water proof diaphragm, bearing holder (housing, cover) and the Pressure Block combination section of the miniature five cylinder membrane pumps of the present invention.
Figure 13 is the Pressure Block of the miniature five cylinder membrane pumps of the present invention.
Figure 14 is the water intaking valve of the miniature five cylinder membrane pumps of the present invention, outlet valve and diaphragm seat scheme of installation.
Figure 15 is the water intaking valve of the miniature five cylinder membrane pumps of the present invention, outlet valve and diaphragm seat combination section.
Figure 16 is the diaphragm seat of the miniature five cylinder membrane pumps of the present invention.
Figure 17 is the head sequential Stereoscopic profile of the miniature five cylinder membrane pumps of the present invention.
Figure 18 is pump cover and first combiner of reflux composition of the miniature five cylinder membrane pumps of the present invention.
Figure 19 is the pump housing and the 4th combiner of motor casing composition of the miniature five cylinder membrane pumps of the present invention.
Figure 20 is the bearing holder (housing, cover) of the miniature five cylinder membrane pumps of the present invention.
Figure 21 is the pump housing of the miniature five cylinder membrane pumps of the present invention.
Figure 22 is the motor casing of the miniature five cylinder membrane pumps of the present invention.
nullIn figure: 1、Reflux，2、Pump cover，3、Outlet valve，4、O，5、Diaphragm does，6、Water intaking valve，7、Water proof diaphragm，8、Pressure-bearing is done，9、Bearing holder (housing, cover)，10、Bearing，11、Eccentric，12、The pump housing，13、Motor casing，20、Triplex diaphragm pump cover，21、O，22、Triplex membrane pump outlet valve，23、Triplex diaphragm of diaphragm pump seat，24、Triplex membrane pump water intaking valve，25、Triplex diaphragm pump piston block，26、Triplex membrane pump water proof diaphragm，27、Triplex membrane pump Pressure Block，28、Triplex membrane pump bearing holder (housing, cover)，29、Triplex membrane pump bearing，30、Triplex membrane pump is eccentric，31、Triplex diaphragm pump motor，57、The miniature chamber of diaphragm pump piston without cylinder，206、207、504、505 is seal line，501、901、1201 is hole, location，502、804、1202 is locating slot，303、603、1203、1302 is locating dowel，201、704、708、802 screw holes，506、507 is nick arc surface，302、602 is dimpling arc surface，301、601 is plane，202、Water inlet，203、Outlet，204、Backflash，205、Fore-set，503、O groove，701、Piston block，702、Dashpot，703、Extension，705、Separate post，706、Bossing，707、Sealing column，803、Pressure-bearing surface，903、Piston push rod，1301、Thermovent
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
Refer to shown in Fig. 7 to Figure 22, the present invention uses water proof diaphragm 7 and piston block 701 to make the scheme of single component in integrated mode, piston block 701 portion at water proof diaphragm 7 is provided with dashpot 702, when the piston push rod 903 in piston block 701 part and bearing holder (housing, cover) 9 of water proof diaphragm 7 does up-down vibration, piston push rod 903 stretches the diaphragm in dashpot 702, to around piston block 701 diaphragm do not impact, avoid water proof diaphragm 7 work long hours cause fatigability tear, the simultaneously the most less workload of motor, reduce energy consumption more than 25%.Being provided with sealing column 707 bottom water proof diaphragm 7, sealing column 707 is provided with screw hole, and the diameter of screw hole is less than the diameter of screw.Being provided with piston push rod 903 on bearing holder (housing, cover) 9, piston push rod 903 is provided with hole, location and screw hole.With screw through the screw hole on the piston block 701 of water proof diaphragm 7, sealing column 707 is fixed to the hole, location of the piston push rod 903 of bearing holder (housing, cover) 9.Screw crush seal post 707 and hole, location, produce sealing effectiveness.Sealing column does not reaches pesticide, so sealing effectiveness will not be produced impact.
Plunger shaft number is increased to five chambeies.The end face of outlet valve 3 and water intaking valve 6 is set to plane, and bottom is dimpling arc surface.Outlet valve 3 is divided into five independent valve bodies by single valve body.The corresponding position of diaphragm seat 5 is arranged to nick arc surface.Pump cover 2 be internally provided with five fore-sets.Outlet valve 3 is fixed jointly by the locating slot 502 on the fore-set 205 of pump cover 2 and diaphragm seat 5.Outlet valve 3 is met pesticide and swelling reaction is occurred, and the position of deformation extends at the end face of outlet valve 3, does not impacts the sealing effectiveness of outlet valve 3.Because outlet valve 3 is relatively independent, so when some outlet valve damages, water proof diaphragm 7 can work on, operating pressure only has and slightly reduces.The groove of diaphragm seat 5 is provided with seal line 504, and seal line 504 extrudes the separation post 705 of water proof diaphragm 7, enhances the sealing between each plunger shaft.
Bottom on pump cover 2 is provided with two seals line.The projection of the first seal line extruding water proof diaphragm forms the first sealing.The extension of the second seal line extruding water proof diaphragm, forms the second sealing.First seals and the common effect of the second sealing, is greatly improved the original sealing effectiveness of membrane pump.
Preferably, the miniature five cylinder membrane pumps of the present invention, motor shaft, through the hole, location 1201 of the pump housing 12, is fixed with the first screw.Motor casing 13 is enclosed within motor, is fixed on the locating slot 1302 of the pump housing 12 through the locating dowel 1302 on motor casing 13 with the second screw.Motor casing 13 is provided with fence type thermovent 1301, and the position of thermovent is corresponding with the position of electric motor fan.Eccentric 11 are fixed on bearing 10, and bearing 10 is fixed at the locating slot 904 of bearing holder (housing, cover) 9.It is provided with piston block 701 with reference on the water proof diaphragm shown in Figure 11, piston block 701 has the sealing column 707 of screw hole 708. water proof diaphragm through the hole, location 801 of Pressure Block 8, be installed in the hole, location 901 on the piston push rod 903 of bearing holder (housing, cover) 9 with the 3rd screw.Because the diameter of the screw hole 708 of piston block 701 is less than the diameter of the 3rd screw, the 3rd screw crush seal post 707 and the hole, location 901 of piston push rod 903, is formed and seal.It is provided with dashpot 702 the most as shown in figure 12 on water proof diaphragm 7, when piston push rod 903 and piston block 701 do up-down vibration, piston block 701 stretches the diaphragm of dashpot 702, diaphragm 709 around piston block 701 do not had active force, decrease the abrasion of water proof diaphragm 7, decrease the load of motor simultaneously and reduce energy consumption.Rigidity plastics PPS is used to replace original nylon PA with reference to Pressure Block 8 shown in Figure 13, it is to avoid to cause the sealing effectiveness between plunger shaft poor because the plane 803 of Pressure Block deforms, the situation of pressure reduction.
As shown in figure 14 O 4 is arranged in the groove 503 of diaphragm seat 5.The end face 601 of water intaking valve 6 is plane, and the locating dowel 603 of bottom, through the hole, location 501 bottom diaphragm seat 5, is fixed on diaphragm seat 5 with fixing post 604.The ground 602 of water intaking valve is dimpling arc surface, and the corresponding surface 507 of diaphragm seat 5 is nick arc surface, leaves gap between the two.The end face 301 of outlet valve 3 is set to plane, bottom centre's locating dowel 303 of outlet valve 3, is installed in the locating slot 502 of diaphragm seat 5, the fore-set 205 on the locating slot 502 of diaphragm seat and pump cover jointly fix.The bottom surface 302 of outlet valve is dimpling arc surface, and the corresponding surface 506 of diaphragm seat 5 is nick arc surface, leaves gap between the two, prevents water intaking valve and outlet valve from meeting pesticide and swelling reaction occurs, and after deformation, the sealing on water inlet and water outlet produces impact, with reference to Figure 15.
As shown in figure 16, being provided with seal line 504 in the bottom groove of diaphragm seat 5, bottom margin is provided with seal line 505. and is put on water proof diaphragm 7 by mounted diaphragm seat 5.Five independent plunger shaft are formed with reference to Figure 17 diaphragm seat 5 and water proof diaphragm 7.Seal line 504 at the bottom groove of diaphragm seat 5 extrudes the separation post 705 of water proof diaphragm 7, forms the first sealing a1.The seal line 505 of the bottom margin of diaphragm seat 5 extrudes at the plane 709 of water proof diaphragm, define the second sealing (not shown) between plunger shaft and water inlet, decrease water proof diaphragm 7 meet pesticide shrink after, the water of high pressure is back to, from plunger shaft, the situation that water inlet makes pressure reduce.
The bottom of pump cover 2 as shown in Figure 9 is provided with seal line 206, and bottom margin is provided with seal line 207.Seal line 206 bottom pump cover extrudes the bossing 706 of water proof diaphragm 7 the most as shown in figure 17, forms the 3rd sealing a3.The seal line 207 of pump cover 2 bottom margin extrudes the extension 703 of water proof diaphragm 7, forms the 4th sealing (not shown).Two seals acts on jointly, enhances the sealing effectiveness between water inlet and the membrane pump external world.Pump cover 2 is provided with water inlet 202 and outlet 203, and water flows into from water inlet 202, forms the water of high pressure, discharge from outlet 203 after membrane pump works.
Being provided with backflash 204 on pump cover 2, when outlet 203 is closed or blocked, form high pressure at outlet 203, the water jack-up of high pressure is arranged on the reflux 1 in backflash 204, and water is back at water inlet 202 from backflash, forms poised state.
Concrete installation method:
With screw, reflux 1 is installed in the backflash of pump cover 2, forms the first combiner, as shown in figure 18.
Water intaking valve 6, O 4, outlet valve 3 are installed on diaphragm seat 5, form the second combiner, the most as shown in figure 14.
Bias 11 is installed on bearing 10, then bearing 10 is installed on bearing holder (housing, cover) 9.Being set on bearing holder (housing, cover) 9 by Pressure Block 8, the sealing column 707 of water proof diaphragm 7 passes at the hole, location 901 positioning the piston push rod 903 that hole 801 is installed to bearing holder (housing, cover) 9 of Pressure Block 8, is screwed, forms the 3rd combiner, with reference to Figure 11.
Motor is installed on the pump housing 12 through the hole, location 1201 of the pump housing 12, then puts motor set 13, be screwed, form the 4th combiner, with reference to Figure 19.
By the bias 11 in the 3rd combiner through motor shaft, the 3rd combiner is installed on the pump housing 12.Then the second combiner is installed on the water proof diaphragm 7 of the 3rd combiner, covers the first combiner, be screwed.Finally on the pump housing 12 and motor casing 13, install motor foot.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.Multiple amendment to these embodiments will be apparent from for those skilled in the art, in the case of generic principles defined herein can be in without departing from the spirit or scope of the present invention, realizes in other embodiments.Therefore, the present invention will not be limited to the embodiments shown herein, and is intended to accord with principles disclosed herein and the consistent the widest scope of features of novelty.
Claims (10)
1. miniature five cylinder membrane pumps, it is characterised in that: include reflux (1), pump cover (2), outlet valve (3), diaphragm seat (5), water intaking valve (6), water proof diaphragm (7), Pressure Block (8), bearing holder (housing, cover) (9), bearing (10), eccentric (11), the pump housing (12) and motor casing (13) the most successively；Described reflux (1) is arranged on described pump cover (2)；Described outlet valve (3) and water intaking valve (6) are all arranged on described diaphragm seat (5)；Motor shaft in described motor casing (13) is through the hole, location (1201) of the described pump housing (12)；Described bias (11) is connected on described motor shaft, and is arranged in described bearing (10)；Described bearing (10) is arranged on the locating slot (904) of described bearing holder (housing, cover) (9)；Described bearing holder (housing, cover) (9) is connected to described water proof diaphragm (7), and described Pressure Block (8) is positioned between described bearing holder (housing, cover) (9) and water proof diaphragm (7)；Described diaphragm seat (5) is connected to described water proof diaphragm (7)；It is provided with piston block (701) on described water proof diaphragm (7)；Described water proof diaphragm (7) and piston block (701) are one-body molded；It is provided with dashpot (702) between described water proof diaphragm (7) and piston block (701).
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: it is provided with O (4) between described outlet valve (3) and diaphragm seat (5)；Described O (4) is positioned in the groove (503) of described diaphragm seat (5).
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: described Pressure Block (8) uses rigidity plastics.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: described diaphragm seat (5) and water proof diaphragm (7) form five independent plunger shaft.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: the seal line (504) at the bottom groove of described diaphragm seat (5) extrudes the separation post (705) of described water proof diaphragm (7), forms the first sealing.
Miniature five cylinder membrane pumps the most according to claim 4, it is characterized in that: the seal line (505) of the bottom margin of described diaphragm seat (5) extrudes plane (709) place of described water proof diaphragm (7), define the second sealing between described plunger shaft and water inlet.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: the seal line (206) of described pump cover (2) bottom extrudes the bossing (706) of described water proof diaphragm (7), forms the 3rd sealing.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: the seal line (207) of described pump cover (2) bottom margin extrudes the extension (703) of described water proof diaphragm (7), forms the 4th sealing.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: the bottom surface (602) of described water intaking valve (6) is convex arc surface, and the surface (507) of described diaphragm seat (5) is concaved circular cambered surface, is connected between the two, and leaves gap.
Miniature five cylinder membrane pumps the most according to claim 1, it is characterised in that: the bottom surface (302) of described outlet valve (3) is convex arc surface, and the surface (506) of described diaphragm seat (5) is concaved circular cambered surface, is connected between the two, and leaves gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315923.6A CN104033365B (en) | 2014-07-03 | 2014-07-03 | Miniature five cylinder membrane pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315923.6A CN104033365B (en) | 2014-07-03 | 2014-07-03 | Miniature five cylinder membrane pumps |
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| Publication Number | Publication Date |
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| CN104033365A CN104033365A (en) | 2014-09-10 |
| CN104033365B true CN104033365B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410315923.6A Active CN104033365B (en) | 2014-07-03 | 2014-07-03 | Miniature five cylinder membrane pumps |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7159086B2 (en) * | 2019-03-12 | 2022-10-24 | ジーエムシーシー アンド ウェリング アプライアンス コンポーネント （タイランド） カンパニー リミテッド | Compressors and equipment equipped with them |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4141434A1 (en) * | 1991-12-16 | 1993-06-17 | Fafnir Gmbh | DIAPHRAGM VACUUM PUMP |
| WO2005106247A2 (en) * | 2004-04-21 | 2005-11-10 | Itt Corporation | Five piston diaphragm pump |
| CN201925133U (en) * | 2010-11-25 | 2011-08-10 | 雷平现 | Electric diaphragm pump |
| CN203273082U (en) * | 2013-04-27 | 2013-11-06 | 浙江铭仕管业有限公司 | Single face spanner position temperature measuring pipe fitting with diameter reducing structures |
| CN203570550U (en) * | 2013-11-19 | 2014-04-30 | 厦门坤锦电子科技有限公司 | Large flow micro air pump |
-
2014
- 2014-07-03 CN CN201410315923.6A patent/CN104033365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4141434A1 (en) * | 1991-12-16 | 1993-06-17 | Fafnir Gmbh | DIAPHRAGM VACUUM PUMP |
| WO2005106247A2 (en) * | 2004-04-21 | 2005-11-10 | Itt Corporation | Five piston diaphragm pump |
| CN201925133U (en) * | 2010-11-25 | 2011-08-10 | 雷平现 | Electric diaphragm pump |
| CN203273082U (en) * | 2013-04-27 | 2013-11-06 | 浙江铭仕管业有限公司 | Single face spanner position temperature measuring pipe fitting with diameter reducing structures |
| CN203570550U (en) * | 2013-11-19 | 2014-04-30 | 厦门坤锦电子科技有限公司 | Large flow micro air pump |
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| CN104033365A (en) | 2014-09-10 |
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