CN201043514Y - Minitype electrical plunger pump - Google Patents
Minitype electrical plunger pump Download PDFInfo
- Publication number
- CN201043514Y CN201043514Y CNU2007201510191U CN200720151019U CN201043514Y CN 201043514 Y CN201043514 Y CN 201043514Y CN U2007201510191 U CNU2007201510191 U CN U2007201510191U CN 200720151019 U CN200720151019 U CN 200720151019U CN 201043514 Y CN201043514 Y CN 201043514Y
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- plunger
- pump
- piston
- way valve
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- Details Of Reciprocating Pumps (AREA)
Abstract
Relating to the technical field of reciprocating dynamic piston pumps, the utility model provides a minitype electric piston pump which has the advantages of compact integral structure, light weight and adaptation to microinjection. In the technical scheme resolving the technical problems, the utility model comprises a pump body, an electric motor, a piston, a pump cavity, a pump cover, a liquid inlet check valve and a liquid outlet check valve, wherein, the piston is provided with a unidirectional liquid outlet channel controlled by the liquid outlet check valve, which includes the piston head in the pump cavity, the outer surface of a piston lug boss arranged on the piston head is provided with a plunger and intervallically matches the inner surface hole of the plunger, the outer surface of the plunger matches the inner surface of the pump cavity, the axial length of the piston lug boss is longer than the axial length of the plunger, a unidirectional gasket is arranged on the end surface of the piston lug boss, and the excircle diameter of the unidirectional gasket is larger than the diameter of the inner surface hole of the plunger. When being operated on the back or in the hand, the prior piston pump has the problems of high labor intensity, heavy vibration and noise and non-adaptation to microinjection, and the utility model resolves the problem.
Description
Technical field
The utility model relates to reciprocating power plunger pump technique field, particularly a kind of miniature electric plunger pump.
Background technique
Thereby the reciprocating power plunger pump is by the to-and-fro motion of plunger, makes pressure cycle variation inspiration liquid in the pump chamber and the working pump that liquid is ejected with certain pressure.Existing small-sized reciprocating power plunger pump is generally by motor; plunger pump; compositions such as frame; motor; plunger pump is located on the frame; the power of motor drives the plunger pump motion after the reducing gear transmission; such plunger pump volume is big; quality is heavy; the flow of pump is big; be usually used in equipment for plant protection as the medicine liquid spray instrument; carry out operation by manual operation; the carrying effort; particularly need manpower to bear or hand-held when carrying out mobile operating; labor intensity is big; vibration and noise are big; the operator is tired easily, also is not suitable for smart amount and trace and sprays, and is not suitable for that manpower is born at present or hand-held carries out the light weight of mobile operating; be fit to the miniature power plunger pump that trace sprays.
The model utility content
The purpose of this utility model is to provide a kind of compact overall structure, light weight, is fit to the miniature electric plunger pump that trace sprays, solving existing reciprocating power plunger pump is bearing or hand-held when carrying out mobile working, labor intensity is big, vibration and noise are big, is not suitable for the problem that trace sprays.
The technological scheme of the utility model technical solution problem is, comprise the pump housing, motor, plunger, pump chamber, pump cover, the feed liquor one-way valve, the fluid one-way valve, the feed liquor one-way valve is located on the pump cover, and pump cover is established inlet opening, inlet opening is communicated with pump chamber by the feed liquor one-way valve, the pump housing is established liquid outlet opening, plunger cooperates with pump housing internal surface, does reciprocating linear motion in pump chamber under the power input shaft rotation drives, and described plunger is provided with the unidirectional liquid outlet channel by the control of fluid one-way valve, and described unidirectional liquid outlet channel one end is communicated with pump chamber, the other end is communicated with liquid outlet opening.
Described unidirectional liquid outlet channel comprises the plunger head of plunger end in pump chamber, described plunger head is provided with the plunger boss, plunger boss outer surface is provided with piston, plunger boss outer surface and piston inner surface apertures are Spielpassung, outer surface of piston cooperates with the pump chamber internal surface, the axial length of described plunger boss is greater than the axial length of piston, and the terminal surface of described plunger boss is established the one-way sealing pad, and the outside diameter of described one-way sealing pad is greater than the diameter of piston inner surface apertures.
Described feed liquor one-way valve touches by spring and the one-way valve seated connection that is arranged on the pump chamber inner top.
Described one-way sealing pad is fixed on the terminal surface of plunger boss by being threaded.
Described outer surface of piston is established seal ring.
Described plunger near pto one end axially establish opening slot, described opening slot is connected with the eccentric shaft that is located at the pto end, the periphery of described eccentric shaft is provided with bearing.
The inlet opening at described feed liquor one-way valve place is provided with the one-way valve push rod, and described one-way valve push rod is located on the pump cover.
The described pump housing, pump cover adopt the Reinforced Nylon material.
The described pump housing is established Metallic cylinder one at the internal surface of pump cover one end.
The endoporus of the described pump housing between liquid outlet opening and plunger guide hole established Metallic cylinder two, and Metallic cylinder two inner headed faces, periphery are established seal ring respectively, and described Metallic cylinder two tip portion are established the fence dottle pin.
Beneficial effect: because miniature electric plunger pump compact overall structure, the pump housing adopts nonmetallic material, light weight such as nylon, is suitable for that manpower is born or hand-held carries out the movable spray operation; Be provided with the unidirectional liquid outlet channel of fluid one-way valve control, simple in structure, functional reliability is high, add Metallic cylinder increased the pump housing rigidity and intensity, the wearing and tearing of minimizing movement parts, prolonged working life of machine; Spring by being provided with or changing different elastic force can improve feed liquor one-way valve functional reliability with the cracking pressure of adjusting the feed liquor one-way valve, the flow of controlling liquid, reduces the utilization ratio of the waste of liquid and loss, raising liquid, is fit to smart amount and trace and sprays; On eccentric shaft, be provided with rolling bearing, reduced the friction and wear of plunger and output shaft, increased the working life of plunger and pto; The place is provided with the one-way valve push rod at the feed liquor one-way valve, in the time of starting, push the one-way valve push rod, the one-way valve push rod can be with the feed liquor one-way valve opens, make the interior gas of pump chamber discharge, shorten the time of atomizing of liquids from start to beginning fast, thereby the dry friction that reduces the pump housing and plunger has reduced the relative movement machine members; 7 pairs of Metallic cylinders that contacted of fence dottle pin and piston have the supplemental support effect.
Description of drawings
Fig. 1 is the complete machine structure schematic representation.
Embodiment
Among the figure, the 1-pump housing, 2-motor, 3-plunger, 4-seal ring, 5-Metallic cylinder two, 6-seal ring, 7-fence dottle pin, 8-liquid outlet opening, 9-seal ring, the 10-piston, 11-one-way sealing pad, 12-Metallic cylinder one, 13-spring, 14-feed liquor one-way valve, 15-one-way valve push rod, 16-inlet opening, 17-bearing, 18-eccentric shaft, 19-power input shaft, the 20-bearing, 21-pump cover, 22-opening slot, 23-pump chamber, 24-plunger boss, 25-piston inner surface apertures, the unidirectional valve seat of 26-, 27-plunger guide hole.
As shown in Figure 1, the pump housing 1, pump cover 21 adopt the Reinforced Nylon material; Pump cover 21 is established feed liquor one-way valve 14 and is contacted with unidirectional valve seat 26 by the spring 13 that is arranged on pump chamber 23 inner tops, pump cover 21 is established inlet opening 16, inlet opening 16 is communicated with pump chamber 23 by feed liquor one-way valve 14, and the pump cover 21 at feed liquor one-way valve 14 places is provided with one-way valve push rod 15; The unidirectional liquid outlet channel of plunger 3 comprises the plunger head of plunger 3 end in pump chamber 23, plunger head is provided with plunger boss 24, plunger boss 24 outer surfaces are provided with piston 10, plunger boss 24 outer surfaces and piston 10 inner surface apertures 25 are Spielpassung, piston 10 outer surfaces cooperate with Metallic cylinder one 12 internal surfaces, piston 10 outer surfaces are established seal ring 9, the axial length of plunger boss 24 is greater than the axial length of piston 10, one-way sealing pad 11 is fastened on the terminal surface of plunger boss 24 by screw, and the outside diameter of one-way sealing pad 11 is greater than the diameter of piston 10 inner surface apertures 25, and unidirectional liquid outlet channel one end is communicated with pump chamber 23, the other end is communicated with liquid outlet opening 8; The pump housing 1 is established Metallic cylinder 1 at the internal surface of pump cover 21 1 ends; The endoporus of the pump housing 1 between liquid outlet opening 8 and plunger guide hole 27 established Metallic cylinder 25, and the endoporus of Metallic cylinder 25 cooperates with plunger 3, and Metallic cylinder 25 inner headed faces, periphery are established seal ring 4 and seal ring 6 respectively, and Metallic cylinder 25 tip portion are established fence dottle pin 7; The pump housing 1 is established liquid outlet opening 8, plunger 3 is axially being established opening slot 22 near power input shaft 19 1 ends, opening slot 22 is connected with the eccentric shaft 18 that is located at pto 19 ends, the periphery of eccentric shaft 18 is provided with bearing 17, and plunger 3 does reciprocating linear motion in the pump housing 1 under power input shaft 19 rotations drive.
Working principle: miniature electric plunger pump as shown in the figure, power input shaft 19 is by bearing 20 and the pump housing 1 fixed connection, eccentric shaft 18 is around the rotation of power input shaft 19 centers, the bearing 17 of the periphery of eccentric shaft 18 contacts with the shaft orientation opening groove 22 of plunger 3, does reciprocating linear motion in the pump housing 1 thereby drive plunger 3; When plunger 3 has just begun to move downward in the pump housing 1, feed liquor one-way valve 14 keeps contacting with unidirectional valve seat 26 by the elastic force effect of spring 13, owing to the effect that is associated with seal ring 9 of joining between piston 10 and the Metallic cylinder 1, produce certain surface friction drag and motion delay, piston 10 and plunger boss 24 are relatively moved axial the generation, thereby make the upper-end surface of piston 10 and the lower end surface of one-way sealing pad 11 keep in touch and seal, make pump chamber 23 not be communicated with the liquid outlet opening 8 of piston 10 bottoms, form the seal space of a sealing in the pump chamber 23, when plunger 3 continues in the pump housing 1 when descending, seal spacies in the pump chamber 23 increase, and open feed liquor one-way valve 14 and make liquid enter pump chamber 23 thereby produce certain negative pressure; When going downwards to lower dead center in the pump housing 1, plunger 3 transfers to when up, owing to the effect that is associated with seal ring 9 of joining between piston 10 and the Metallic cylinder 1, produce certain surface friction drag and motion delay, piston 10 and plunger boss 24 are relatively moved axial the generation, thereby make the upper-end surface of piston 10 and the lower end surface of one-way sealing pad 11 an axial gap occur, make pump chamber 23 be communicated with by this axial gap with the liquid outlet opening 8 of piston 10 bottoms, when plunger 3 continues in the pump housing 1 when up, seal space in the pump chamber 23 is compressed, thereby produce liquid that certain malleation makes pump chamber 23 through the gap of axial gap and plunger boss outer surface and piston inner surface apertures and with certain pressure outflow liquid outlet opening 8, be up to atdc and begin another work cycle.
Claims (10)
1. miniature electric plunger pump, comprise the pump housing (1), motor (2), plunger (3), pump chamber (23), pump cover (21), feed liquor one-way valve (14), the fluid one-way valve, feed liquor one-way valve (14) is located on the pump cover (21), pump cover (21) is established inlet opening (16), inlet opening (16) is communicated with pump chamber (23) by feed liquor one-way valve (14), the pump housing (1) is established liquid outlet opening (8), and plunger (3) cooperates with the pump housing (1) internal surface, under power input shaft (19) rotation drives, in pump chamber (23), do reciprocating linear motion, it is characterized in that, described plunger (3) is provided with the unidirectional liquid outlet channel by the control of fluid one-way valve, and described unidirectional liquid outlet channel one end is communicated with pump chamber (23), the other end is communicated with liquid outlet opening (8).
2. miniature electric plunger pump according to claim 1, it is characterized in that, described unidirectional liquid outlet channel comprises the plunger head of plunger (3) end in pump chamber (23), described plunger head is provided with plunger boss (24), plunger boss (24) outer surface is provided with piston (10), plunger boss (24) outer surface and piston (10) inner surface apertures (25) are Spielpassung, piston (10) outer surface cooperates with pump chamber (23) internal surface, the axial length of described plunger boss (24) is greater than the axial length of piston (10), the terminal surface of described plunger boss (24) is established one-way sealing pad (11), and the outside diameter of described one-way sealing pad (11) is greater than the diameter of piston (10) inner surface apertures (25).
3. miniature electric plunger pump according to claim 1 is characterized in that, described feed liquor one-way valve (14) contacts with unidirectional valve seat (26) by the spring (13) that is arranged on pump chamber (23) inner top.
4. miniature electric plunger pump according to claim 2 is characterized in that, described one-way sealing pad (11) is fixed on the terminal surface of plunger boss (24) by being threaded.
5. miniature electric plunger pump according to claim 2 is characterized in that, described piston (10) outer surface is established seal ring (9).
6. miniature electric plunger pump according to claim 2, it is characterized in that, described plunger (3) is axially being established opening slot (22) near pto (19) one ends, described opening slot (22) is connected with the eccentric shaft (18) that is located at pto (19) end, and the periphery of described eccentric shaft (18) is provided with bearing (17).
7. according to claim 1 or 3 described miniature electric plunger pumps, it is characterized in that the inlet opening (16) that described feed liquor one-way valve (14) is located is provided with one-way valve push rod (15), described one-way valve push rod (1 5) is located on the pump cover (21).
8. miniature electric plunger pump according to claim 1 is characterized in that, the described pump housing (1), pump cover (21) adopt the Reinforced Nylon material.
9. miniature electric plunger pump according to claim 8 is characterized in that, the described pump housing (1) is established Metallic cylinder one (12) at the internal surface of pump cover (21) one ends.
10. miniature electric plunger pump according to claim 8, it is characterized in that, the endoporus of the described pump housing (1) between liquid outlet opening (8) and plunger guide hole (27) established Metallic cylinder two (5), Metallic cylinder two (5) inner headed faces, periphery are established seal ring (4) and seal ring (6) respectively, and described Metallic cylinder two (5) tip portion are established fence dottle pin (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201510191U CN201043514Y (en) | 2007-05-05 | 2007-05-05 | Minitype electrical plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201510191U CN201043514Y (en) | 2007-05-05 | 2007-05-05 | Minitype electrical plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043514Y true CN201043514Y (en) | 2008-04-02 |
Family
ID=39258408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201510191U Expired - Fee Related CN201043514Y (en) | 2007-05-05 | 2007-05-05 | Minitype electrical plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043514Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410208A (en) * | 2010-09-02 | 2012-04-11 | 罗伯特·博世有限公司 | Piston guiding element, particularly piston guiding element for cylinder piston pump |
| CN108457842A (en) * | 2018-05-24 | 2018-08-28 | 吉林化工学院 | Medical compound plunger pump |
| WO2020007175A1 (en) * | 2018-07-03 | 2020-01-09 | 宁波亿林节水科技股份有限公司 | Single-plunger high-pressure spraying pump |
| CN111927727A (en) * | 2020-08-13 | 2020-11-13 | 苏州小科清洁科技有限公司 | Connecting structure of plunger pump body |
| WO2022188447A1 (en) * | 2021-03-09 | 2022-09-15 | 绿田机械股份有限公司 | Pump unit for miniature cleaning machine |
-
2007
- 2007-05-05 CN CNU2007201510191U patent/CN201043514Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410208A (en) * | 2010-09-02 | 2012-04-11 | 罗伯特·博世有限公司 | Piston guiding element, particularly piston guiding element for cylinder piston pump |
| CN108457842A (en) * | 2018-05-24 | 2018-08-28 | 吉林化工学院 | Medical compound plunger pump |
| CN108457842B (en) * | 2018-05-24 | 2023-06-23 | 吉林化工学院 | Medical composite plunger pump |
| WO2020007175A1 (en) * | 2018-07-03 | 2020-01-09 | 宁波亿林节水科技股份有限公司 | Single-plunger high-pressure spraying pump |
| CN111927727A (en) * | 2020-08-13 | 2020-11-13 | 苏州小科清洁科技有限公司 | Connecting structure of plunger pump body |
| WO2022188447A1 (en) * | 2021-03-09 | 2022-09-15 | 绿田机械股份有限公司 | Pump unit for miniature cleaning machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 Termination date: 20110505 |