CN202176482U - Negative pressure pump with adjustable negative pressure value - Google Patents
Negative pressure pump with adjustable negative pressure value Download PDFInfo
- Publication number
- CN202176482U CN202176482U CN2011202905274U CN201120290527U CN202176482U CN 202176482 U CN202176482 U CN 202176482U CN 2011202905274 U CN2011202905274 U CN 2011202905274U CN 201120290527 U CN201120290527 U CN 201120290527U CN 202176482 U CN202176482 U CN 202176482U
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- CN
- China
- Prior art keywords
- negative pressure
- driven wheel
- air cylinder
- piston
- pressure value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a negative pressure pump with an adjustable negative pressure value, wherein an electromotor is connected with a driven wheel through a driving wheel and a belt; the driven wheel is connected with an air cylinder cover of an air cylinder through a bearing; one end of a piston screw in the air cylinder is fixed in the center of the driven wheel; the other end of the piston screw is provided with a rubber piston ring; the front end of the air cylinder is provided with an air outlet; the edge of the driven wheel is provided with a magnet; and a singlechip microcomputer is arranged at the lower end of the magnet. According to the utility model, the driven wheel provided with internal threads is driven by the electromotor to drive the piston screw, so that a piston moves in the air cylinder body in a reciprocating way to generate negative pressure, and a negative pressure device with adjustable negative pressure value and intermittent function can be realized under the control of the singlechip microcomputer. The negative pressure pump disclosed by the utility model can be widely applied to medical care instruments, vacuum packaging equipment, daily articles and the like and can be used for devices, such as a milkpump, a breast strengthening instrument, a sputum suction apparatus, a vacuumizing device and the like which need an adjustable negative pressure source in means of production and means of livelihood.
Description
Technical field: the utility model relates to a kind of utility unit that produces negative pressure, especially a kind of negative pressure pump of adjustable negative pressure value.
Background technique: the conventional piston type negative pressure device divides two kinds of producing methods substantially; A kind of is the camshaft piston; Its characteristics are piston next produces negative pressure toward a rereeling pendulum motion in cylinder block in the drive of camshaft, need be provided with special air valve with outgas and come the negative pressure in the control cylinder body air-breathing, and this apparatus structure is complicated; And negative pressure value needs repeatedly can produce after the to-and-fro motion greatly, is difficult to simultaneously realize that the big disposable adjusting of negative pressure value puts in place.Another kind is a leather bucket formula negative pressure device, and its characteristics produce negative pressure for driving the leather bucket to-and-fro motion by the multiple rotation of returning of screw rod in cylinder block, and it is various that this device is made link, so repair rate is higher.
Summary of the invention: to the deficiency of above-mentioned existing technology, the utility model provides a kind of negative pressure pump of adjustable negative pressure value.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is: a kind of negative pressure pump of adjustable negative pressure value, motor is connected with driven wheel with belt through drive wheel.Driven wheel is connected with the cylinder head of cylinder through bearing.One end of piston screw rod is fixed on the center of driven wheel.The other end of piston screw is provided with the rubber piston ring.The front end of cylinder is provided with the air outlet.The edge of driven wheel is provided with magnet.Single-chip microcomputer is in the lower end of magnet.
The driven wheel that the utility model utilizes electric motor drive to have internal thread drives piston screw, makes piston to-and-fro motion in cylinder block produce negative pressure, and leans on Single-chip Controlling to realize the adjustable negative pressure device with intermittent action of negative pressure value.This model utility can be widely used in medical health apparatus, vacuum packaging equipment and articles for daily use etc., needs the device in adjustable negative-pressure source to use in the production and the means of livelihood, as: humalactor, chest exerciser, sputum aspirator, apparatus for vacuum producing etc.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of piston motion when arriving the cylinder bottommost.
Embodiment:
As depicted in figs. 1 and 2: a kind of negative pressure pump of adjustable negative pressure value, motor 9 is connected with driven wheel 6 with belt 8 through drive wheel 10.Driven wheel 6 is connected with the cylinder head 4 of cylinder 1 through bearing 5.One end of cylinder 1 inner carrier screw rod 3 is fixed on the center of driven wheel 6.The other end of piston screw 3 is provided with rubber piston ring 2.The front end of cylinder 1 is provided with air outlet 12.The edge of driven wheel 6 is provided with magnet 7.Monolithic 11 is in the lower end of magnet 7.Described motor 9 can adopt direct current generator.
Working principle:
Holding the driven wheel 6 that has internal thread on the axle 5 by motor 9 outputting powers through drivign belt 8 rotational fixation; Spur the drive screw 3 that has piston head with this; Make piston head to-and-fro motion in cylinder block produce negative pressure, and the rubber piston ring 2 with sealing and opening acting is installed, make to produce negative air pressure in the cylinder block and recover the normal pressure value at piston head; And open an aperture at the tail end of cylinder 1, can make and recover the normal pressure value rapidly after producing maximum negative air pressure value in the cylinder block.Magnet 7 wherein is installed on driven wheel 6; In the rotational displacement of magnet 7, cooperate with the single-chip microcomputer that has Hall element 11 controllers; The number of turns with driven wheel 6 rotation is come control piston reciprocating distance in cylinder block, and intermittently negative pressure apparatus for work of piston type that negative pressure value and reciprocating duty cycle can High Accuracy Control is realized in the space that wherein produces.
Claims (2)
1. the negative pressure pump of an adjustable negative pressure value; It is characterized in that: motor is connected with driven wheel with belt through drive wheel, and driven wheel is connected with the cylinder head of cylinder through bearing, and an end of piston screw rod is fixed on the center of driven wheel; The other end of piston screw is provided with the rubber piston ring; The front end of cylinder is provided with the air outlet, and the edge of driven wheel is provided with magnet, and single-chip microcomputer is in the lower end of magnet.
2. the negative pressure pump of a kind of adjustable negative pressure value as claimed in claim 1, it is characterized in that: described motor is a direct current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202905274U CN202176482U (en) | 2011-08-11 | 2011-08-11 | Negative pressure pump with adjustable negative pressure value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202905274U CN202176482U (en) | 2011-08-11 | 2011-08-11 | Negative pressure pump with adjustable negative pressure value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176482U true CN202176482U (en) | 2012-03-28 |
Family
ID=45866365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202905274U Expired - Fee Related CN202176482U (en) | 2011-08-11 | 2011-08-11 | Negative pressure pump with adjustable negative pressure value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586250B (en) * | 2013-05-10 | 2015-09-02 | 上海御流包装机械有限公司 | A kind of sealing machine negative pressure suction waste material device and waste discharge method thereof |
-
2011
- 2011-08-11 CN CN2011202905274U patent/CN202176482U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586250B (en) * | 2013-05-10 | 2015-09-02 | 上海御流包装机械有限公司 | A kind of sealing machine negative pressure suction waste material device and waste discharge method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20140811 |
|
| EXPY | Termination of patent right or utility model |