CN2797680Y - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
- Publication number
- CN2797680Y CN2797680Y CN 200520109705 CN200520109705U CN2797680Y CN 2797680 Y CN2797680 Y CN 2797680Y CN 200520109705 CN200520109705 CN 200520109705 CN 200520109705 U CN200520109705 U CN 200520109705U CN 2797680 Y CN2797680 Y CN 2797680Y
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Abstract
The utility model discloses a diaphragm pump, which comprises a pump body, wherein the pump body is provided with pump chambers that are separated by a diaphragm inside. The pump body is provided with an inlet, an outlet, and an inlet channel, and an outlet channel which communicate the inlet, the outlet and the pump chambers. The inlet channel and the outlet channel of the pump body are respectively provided with a chamber, and the two chambers respectively divide the inlet channel and the outlet channel into two sections. Each chamber is provided with a rubber diaphragm which can swing in the chamber to form a one-way valve. The diaphragm in the inlet channel covers on a hole of the chamber of the inlet channel, which is communicated with the inlet of the pump body, to form a sealing state, while a gap is reserved between the diaphragm and a hole of the chamber, which is communicated with the pump chambers, therefore the hole can not be sealed by the diaphragm. The diaphragm in the outlet channel covers on a hole in the chamber thereof, which is communicated with a hole of the pump chambers, to form a sealing state, while a gap is reserved between the diaphragm and a hole of the chamber, which is communicated with outlet of the pump body, therefore the hole can not be sealed by the diaphragm. The diaphragm pump has small flow fluctuation when conveying fluids, being very suitable for conveying low pressure difference fluids of small flow.
Description
Technical field
The utility model relates to a kind of diaphragm pump, is particularly suitable for the conveying of the fluid of low differential pressure, small flow, small flow fluctuation.
Background technique
Diaphragm pump has barrier film and barrier film driving mechanism as a kind of conveying equipment for fluid substances in the pump housing, inlet passage in the pump housing and inlet passage communicate with the pump chamber that is divided into by barrier film in the pump housing, and there is one-way valve at import and export passage place in the pump housing.Diaphragm pump is that volume that the action by barrier film changes pump chamber is inhaled into fluid and discharges pump chamber, the suction of fluid and discharge will come the switching of implementation procedure by the switching of the one-way valve in the pump housing, the one-way valve opens of inlet when promptly sucking, the closed check valve of outlet, opposite when the action of one-way valve is with suction when discharging fluid, to guarantee the proper functioning of diaphragm pump.
Because the action of one-way valve always lags behind barrier film, so cause the FLUID TRANSPORTATION flow fluctuation can occur.Always wish that when FLUID TRANSPORTATION flowed fluctuation is as far as possible little,, generally all be designed to two membrane configurations, but can make the barrier film pump structure very complicated like this, cause the corresponding raising of manufacture cost in order to reduce the fluctuation of flow.In addition,, realize the sealing of valve, so require one-way valve to install with bonding reliable to valve events by vertical direction by action of gravity because one-way valve adopts gravity element usually.The patent No. is that 99221925.6 Chinese patent literature discloses a kind of diaphragm pump one-way valve structure, is provided with spring and guiding trestle, improving sensitivity and the sealing that one-way valve opens and closes, and makes its installation direction unrestricted.But the diaphragm pump of this structure is more complicated because one-way valve structures becomes, also make and the pump body structure complexity cause processing cost higher, and one-way valve opens needs higher pressure reduction, so still to lag behind barrier film more in its action, significantly improve improving there is no aspect the flowed fluctuation.No matter be technology or the existing two diaphragm pump in this patent documentation, its common deficiency is that flowed fluctuation is still bigger, and the frequency of pump can not be too high, and its application is limited to when carrying the liquid of low differential pressure, small flow.
The model utility content
Bigger, the baroque problem of flowed fluctuation at existing diaphragm pump existence, the purpose of this utility model is to provide a kind of novel diaphragm pump, this diaphragm pump adopts novel one-way valve structures, its switching is quick on the draw and required pressure reduction little, make that the flowed fluctuation of conveyance fluid is less, and simple in structure, its processing cost is lower.
The diaphragm pump that the utility model provides, comprise the pump housing, the pump chamber that is divided into by barrier film is arranged in the pump housing, import and outlet are arranged on the pump housing and be communicated with import, the inlet passage and the outlet passage of outlet and pump chamber, it is characterized in that: on the inlet passage of the pump housing and outlet passage, respectively be provided with a chamber and be divided into two sections, the elastomer diaphragm that can swing in chamber is installed in each chamber forms one-way valve, and the membrane covered of inlet passage is lived the aperture formation sealing that chamber communicates with pump housing import, but keep certain interval with the aperture that this chamber communicates with pump chamber, it can not sealed up this aperture; Membrane covered in the outlet passage is lived aperture identical with pump chamber in the chamber and is formed sealing, but with the aperture maintenance certain interval that chamber communicates with pump discharge, it can not sealed up this aperture.
Described two elastomer diaphragms can be made of the intermediate portion of two C shape through holes on the monoblock rubber plate, make two as a whole structures of elastomer diaphragm, so that install.
The described pump housing can comprise a superimposed last part and a middle part, import on the pump housing of stating and outlet are positioned on the part, described pump chamber is arranged on the part, on last part and the middle part described inlet passage and outlet passage are arranged all, chamber on the described import and export passage is made of the groove at the place, mating face of middle part, chamber on the described outlet passage is made of the groove at place, last mating face, and described rubber plate edge is clamped between part and the middle part.This structure makes pump structure compact more, and the installation of diaphragm is more convenient, and is convenient to the processing of the pump housing.
Described go up inlet passage in the part and outlet passage respectively with middle part on inlet passage and outlet passage arrange in the dislocation of the aperture at chamber place, make the C shape hole place of inlet passage aperture subtend on the rubber plate of described formation diaphragm on the part, another place, C shape hole on the outlet passage aperture subtend rubber plate on the last part.
On the inlet passage in the groove in described on the part corresponding on position, inlet passage aperture on the part can be provided with projection, equally the place, aperture on the outlet passage of the groove on the part also can be provided with projection corresponding to the outlet passage aperture on the middle part on described, be used to limit the amplitude of fluctuation of diaphragm in chamber at middle part, C shape hole, to guarantee the sensitivity of its reaction, further reduce flowed fluctuation.
The opening direction in described C shape hole can with corresponding outlet on the pump housing and importer to identical, to guarantee the reliability of work.
Described rubber plate edge is provided with a wedge angle, and other parts are straight flange or circular arc limit, and this wedge angle plays indicative function, and the diaphragm dress influences the normal operation of diaphragm pump in the other direction when preventing to assemble.
This diaphragm pump of the present utility model has following beneficial effect:
(1) constitutes one-way valve by chamber being set in inlet passage on the pump housing and the outlet passage and elastomer diaphragm being installed in chamber, an aperture that covers chamber when elastomer diaphragm is not stressed forms sealing, the effect of the pressure reduction of rubber plate both sides makes its swing during diaphragm pump work, make and import and export passage and be opened and close, because it is little that elastomer diaphragm is swung required active force (fluid pressure difference), so the elastomer diaphragm reaction in time, can be substantially and the barrier film synchronization motion, can guarantee that one-way valve in time opens and close, make that the flowed fluctuation of pump is very little, be particularly suitable for low differential pressure, the conveying of small flow fluid.Owing to only constitute one-way valve with an elastomer diaphragm, simple in structure, compact, cost of production is low, and installation direction is not limited in addition.
(2) import and export the protruding setting in place, passage aperture in the groove, make its amplitude of fluctuation that can limit elastomer diaphragm, the sensitivity when the raising diaphragm is closed can reduce the flowed fluctuation of conveyance fluid further.
(3) the elastomer diaphragm structure that part and middle part pump body structure and integral rubber plate constitute in the employing makes pump housing part-structure simpler, compact, and also be more convenient for processing and assembling can obviously reduce production costs.
(4) by last and in the aperture of import and export passage on the part shift to install, make its center that corresponds respectively to elastomer diaphragm and C shape hole place, not only simple in structure, and can guarantee that an aperture opens another and close, make work very reliable.
Description of drawings
Fig. 1 is the structural representation of diaphragm pump of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the planimetric map of diaphragm.
Fig. 4 is the another kind of structural type of one-way valve.
Embodiment
Below in conjunction with the drawings and specific embodiments diaphragm pump of the present utility model is described further, to help understanding content of the present utility model.
As depicted in figs. 1 and 2, diaphragm pump comprises motor 7, the pump housing, the pump housing is assembled into by base 2, end cap 1, last part 11 and middle part 5, motor 7 usefulness screws 18 are fixed on the base 2, end cap 1 usefulness screw 14 is fixed on the base 2, and eccentric bushing 16 usefulness screws 17 are fixed on the output shaft of motor 7, and bearing 8 is housed on the eccentric bushing 16, connecting rod 15 1 step bearings 8, the other end connects with barrier film 10 with screw thread.Loam cake 13, last part 11 and middle part 5 stack with screw 6 and are fixed on the base 2.Form pump chamber 12 between barrier film 10 and the middle part 5, have two through holes to constitute inlet passages 53 and outlet passage 59 on the middle part 5, having inlet passage 113 and outlet passage 119 to communicate with fluid inlet 3 and fluid output 9 on the last part respectively on the last part 11 equally.In the relative junction plane position of last part 11 and middle part 5, aperture at the outlet passage of last part 11 locates fluted 110, there is another groove 50 at place, inlet passage aperture at middle part 5, last part 11 is combined into two grooves of a time-out 50,110 with middle part 5 and has formed inlet passage and the interior chamber of outlet passage, and import 113,53 passages and the dislocation of outlet passage 119,59 axle center that communicate with same chamber on last part 11 and the middle part 5 are arranged.The plane shape of a rubber plate as shown in Figure 3, there are two C shape holes 41 at rubber plate 40 middle parts, 41 ', make rubber plate 40 middle parts two round rubber diaphragms 4 occur, 4 ', the edge of rubber plate 40 by last 11 and middle part 5 clamp be fixed on by last 11 and the pump housing that constitutes of middle part 5 on, elastomer diaphragm 4 middle parts of the aperture subtend of the inlet passage 113 on the last part 11, and whole inlet passage 113 apertures are covered at the elastomer diaphragm 4 aperture periphery that elastomer diaphragm 4 is attached on the part 11 in the raw the time, 41 places, subtend C shape hole, aperture of the inlet passage 53 on the middle part 5 make this elastomer diaphragm 4 this aperture can not blocked; Equally, the aperture of the outlet passage 119 on the last part 11 is over against another 41 ' position, C shape hole, and the aperture of the outlet passage 59 on the middle part 5 is blocked this hole by the elastomer diaphragm 4 of nature ' cover.Elastomer diaphragm 4,4 ' thickness be advisable with 0.2mm～5mm, last part 11 and on the part 5 groove 50,110 the degree of depth greater than elastomer diaphragm 4,4 ' thickness it can be swung in this chamber so that elastomer diaphragm can be swung away from the respective apertures of being blocked it is opened.The C shape hole 41,41 of the rubber plate 40 among Fig. 3 ' opening direction and the pump housing on respective inlets 3 and to export 9 directions consistent, promptly away from the inlet passage on the middle part 53 and on the aperture direction of outlet passage 119 on the part, to guarantee elastomer diaphragm 4,4 ' be quick on the draw and suffered opening and the equilibrium of closing function power.
As shown in Figure 3, rubber plate 40 edges are made of a semi-circle, 1/4 circular arc and three straight lines, wherein two straight lines have constituted a wedge angle 42, this wedge angle angle is advisable with 60 °～120 °, elastomer diaphragm direction dress was anti-when the indicative function by this wedge angle can prevent to assemble, with convenient for assembly and improve efficiency of assembling.
Except that part in can making reaches the aperture dislocation of going up the inlet passage on the part, also can be as shown in Figure 4, the orifice edge place of the outlet passage 119 of last part 11 is provided with a plurality of radial protrusions 112 (or groove even the bulge loop of radial direction through hole is arranged), even make place, elastomer diaphragm 4 ' be attached to aperture still can flow in the outlet passage 119 by the gap between projection (or the through hole on ditch trough or the bulge loop), and in making part 5 and upward the outlet passage on the part 11 can align with one heart.Also can adopt this structure at the place, inlet passage aperture of middle part equally.But obvious this structure is with respect to passing through aperture dislocation so that its mode structure corresponding to C shape hole wants complicated shown in Fig. 1 Fig. 2, and processing cost can be higher, and the reliability of its work is less better.
As depicted in figs. 1 and 2, inlet passage orifice edge in middle part 5 upper grooves have a projection 51 corresponding on the central position, inlet passage 113 aperture of part 11, can be with restriction elastomer diaphragm 4 excessively to the swing of the aperture of middle part 5, to guarantee that fluid can have enough circulation areas with assurance in the inlet passage 53 on the part 5 in space, elastomer diaphragm 4 below flows into, make motor reaction sensitiveer because of elastomer diaphragm 4 amplitude of fluctuation simultaneously for a short time; The same place, aperture that outlet passage on the part 5 59 in the protruding subtend is also arranged at the outlet passage place of last part 11 is to play same purpose.
Its working principle is, when motor 7 makes barrier film 10 centers reciprocating by eccentric bushing 16 and connecting rod 15, because the outer rim of barrier film 10 is fixed, so the volume of pump chamber 12 just increases or dwindles thereupon, when the volume of pump chamber 12 increases, form negative pressure in the chamber, elastomer diaphragm 4 is to the direction swing of middle part 5 under elastomer diaphragm 4 both sides differential pressure actions, the elastomer diaphragm 4 that makes 113 apertures, inlet passage place that originally get lodged in part 11 inlet passage 53 on the part 5 and entering in the pump chamber 12 in this aperture of mouth makes fluid indoor and C shape hole 41 flows to by the aperture inflow chamber, another elastomer diaphragm 4 ' place, 59 apertures, outlet passage aperture of part 5 forms to seal and prevents from outlet passage inner fluid suck-back is returned in the pump chamber 12 in then being attached to by differential pressure action simultaneously.When barrier film 10 moves round about, during the volume reducing of pump cavity 12, form malleation in the chamber, under pressure reduction and diaphragm elastic reaction, elastomer diaphragm 4,4 ' upwards part 11 directions swing is opened outlet passage 59 apertures fluid is discharged by outlet 9 by middle part 5, the outlet passage 59,119 gone up on the part 11, and block it to form and seals at 4 of the elastomer diaphragms place, aperture that is attached to the inlet passage 113 on the part 11 simultaneously, prevent that fluid from being discharged by inlet passage, a circulation is finished.Since elastomer diaphragm 4,4 ' open and close by the elasticity of self and the differential pressure action of fluid, and be not subjected to gravity effect, do not limited to so install.In addition, because elastomer diaphragm 4,4 ' pendulum angle are very little, so reaction is very fast, the dependable flow fluctuation is very little.Particularly the pressure reduction of fluid only need overcome elastomer diaphragm 4,4 ' self elasticity and can realize the switching process, so need fluid pressure difference less, be particularly suitable for the conveying of the fluid of low differential pressure, small flow, and the motion frequency of diaphragm pump barrier film is higher than under 3000 times/minute the high frequency condition.
Claims (9)
1, a kind of diaphragm pump, comprise the pump housing, the pump chamber that is divided into by barrier film is arranged in the pump housing, import and outlet are arranged on the pump housing and be communicated with import, the inlet passage and the outlet passage of outlet and pump chamber, it is characterized in that: on the inlet passage of the pump housing and outlet passage, respectively be provided with a chamber and be divided into two sections, the elastomer diaphragm that can swing in chamber is installed in each chamber forms one-way valve, and the membrane covered of inlet passage is lived the aperture formation sealing that chamber communicates with pump housing import, but keep certain interval with the aperture that this chamber communicates with pump chamber, it can not sealed up this aperture; Membrane covered in the outlet passage is lived aperture identical with pump chamber in the chamber and is formed sealing, but with the aperture maintenance certain interval that chamber communicates with pump discharge, it can not sealed up this aperture.
2, diaphragm pump as claimed in claim 1 is characterized in that: described two elastomer diaphragms are made of the intermediate portion of two C shape through holes on the monoblock rubber plate.
3, diaphragm pump as claimed in claim 2 is characterized in that: corresponding outlet on the opening direction in described C shape hole and the pump housing and importer are to identical.
4, diaphragm pump as claimed in claim 2 is characterized in that: described rubber plate edge is provided with a wedge angle, and other parts are straight flange or circular arc limit.
5, diaphragm pump as claimed in claim 4 is characterized in that: the angle of described wedge angle is 60 °～120 °.
6, diaphragm pump as claimed in claim 1 or 2, it is characterized in that: the described pump housing comprises a superimposed last part and a middle part, import on the pump housing of stating and outlet are positioned on the part, described pump chamber is arranged on the part, on last part and the middle part described inlet passage and outlet passage are arranged all, chamber on the described import and export passage is made of the groove at the place, mating face of middle part, chamber on the described outlet passage is made of the groove at place, last mating face, and described rubber plate edge is clamped between part and the middle part.
7, diaphragm pump as claimed in claim 6, it is characterized in that: described go up inlet passage in the part and outlet passage respectively with middle part on inlet passage and outlet passage arrange in the dislocation of the aperture at chamber place, make the C shape hole place of inlet passage aperture subtend on the rubber plate of described formation diaphragm on the part, another place, C shape hole on the outlet passage aperture subtend rubber plate on the last part.
8, diaphragm pump as claimed in claim 6, it is characterized in that: on the inlet passage in the groove in described on the part corresponding on position, inlet passage aperture on the part be provided with projection, the place, aperture on the outlet passage of the groove on the part also is provided with projection corresponding to the outlet passage aperture on the middle part on described equally.
9, diaphragm pump as claimed in claim 6 is characterized in that: described the thickness of elastomer diaphragm is arranged is 0.2mm～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109705 CN2797680Y (en) | 2005-06-13 | 2005-06-13 | Diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109705 CN2797680Y (en) | 2005-06-13 | 2005-06-13 | Diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797680Y true CN2797680Y (en) | 2006-07-19 |
Family
ID=36868922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109705 Expired - Fee Related CN2797680Y (en) | 2005-06-13 | 2005-06-13 | Diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797680Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464712A (en) * | 2018-10-31 | 2019-03-15 | 赵亮 | Anti-blocking operation vacuum extractor connector with buffering filtering anti-back suction function |
| CN109838366A (en) * | 2019-01-25 | 2019-06-04 | 邹昌红 | A kind of diaphragm booster pump of belt switch and the adjustment structure of protection |
| CN110318988A (en) * | 2018-03-29 | 2019-10-11 | 小卫（上海）生物科技有限公司 | A kind of diaphragm pump |
| CN112983791A (en) * | 2019-12-12 | 2021-06-18 | 核工业理化工程研究院 | Large flux double-diaphragm hand pump |
-
2005
- 2005-06-13 CN CN 200520109705 patent/CN2797680Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318988A (en) * | 2018-03-29 | 2019-10-11 | 小卫（上海）生物科技有限公司 | A kind of diaphragm pump |
| CN109464712A (en) * | 2018-10-31 | 2019-03-15 | 赵亮 | Anti-blocking operation vacuum extractor connector with buffering filtering anti-back suction function |
| CN109838366A (en) * | 2019-01-25 | 2019-06-04 | 邹昌红 | A kind of diaphragm booster pump of belt switch and the adjustment structure of protection |
| CN109838366B (en) * | 2019-01-25 | 2024-04-12 | 邹昌红 | Diaphragm booster pump with switch and protective adjusting structure |
| CN112983791A (en) * | 2019-12-12 | 2021-06-18 | 核工业理化工程研究院 | Large flux double-diaphragm hand pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CITY RUNTIANZHI IMAGE TECHNOLOGY CO., LT Free format text: FORMER OWNER: JIANG HONG; PATENTEE Effective date: 20070427 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070427 Address after: 518000 hi tech Industrial Park, Guanlan Road, Guanlan Road, Shenzhen, Guangdong, Baoan District Patentee after: Runtianzhi Image Technology Co., Ltd., Shenzhen City Address before: 518020, Shenzhen, Guangdong province Luohu District Bao Gang North Road, international car city, six floor West Co-patentee before: Xia Mingzhuo Patentee before: Jiang Hong |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN RUNTIANZHI DIGITAL EQUIPMENT CO., LTD. Free format text: FORMER NAME: RUNTIANZHI IMAGE TECHNOLOGY CO., LTD., SHENZHEN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 high tech Industrial Park, Guanlan Road, Guanlan street, Shenzhen, Guangdong, Baoan District Patentee after: Shenzhen Runtianzhi Digital Equipment Co., Ltd. Address before: 518000 high tech Industrial Park, Guanlan Road, Guanlan street, Shenzhen, Guangdong, Baoan District Patentee before: Runtianzhi Image Technology Co., Ltd., Shenzhen City |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 Termination date: 20140613 |
|
| EXPY | Termination of patent right or utility model |