CN102392809B - Vacuum displacement pump based on Maltese cross movement mechanism - Google Patents
Vacuum displacement pump based on Maltese cross movement mechanism Download PDFInfo
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- CN102392809B CN102392809B CN201110409488.XA CN201110409488A CN102392809B CN 102392809 B CN102392809 B CN 102392809B CN 201110409488 A CN201110409488 A CN 201110409488A CN 102392809 B CN102392809 B CN 102392809B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 244000027321 Lychnis chalcedonica Species 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention discloses a vacuum displacement pump based on a Maltese cross movement mechanism. The vacuum displacement pump comprises a Maltese cross movement mechanism; a groove is arranged on a driven disk; a driving disk is provided with a clamping body; a pump cavity is formed at the bottom of the groove; a piston is arranged in the pump cavity; two pistons of which the axes are located on the same straight line are connected through a rigid connecting piece; the driven disk rotates around a movement shaft; an air inlet hole and an air outlet hole are formed on the movement shaft; and when the clamping body is clamped with the groove, the pump cavity corresponding to the groove is communicated with the air outlet hole, and the other pump cavity on the same axis as the pump cavity is communicated with the air inlet hole. With the Maltese cross movement mechanism, the vacuum pump has relatively high control accuracy, makes full use of circular motion, realizes more stable operation and higher efficiency, can greatly reduce the vibration and noise of a pump body, and has relatively low loss and long service life; and moreover, an air intake/exhaust valve is not required, the air intake/exhaust tightness is better due to the adoption of a rotary machine, and a relatively high vacuum degree can be realized.
Description
Technical field
The present invention relates to a kind of vacuum pump, particularly a kind of vacuum displacement pump based on Maltese cross movement mechanism.
Background technique
Vacuum pump is widely used in all trades and professions, and vacuum pump kind is more has various structures, and various structures have pluses and minuses separately, and the limiting vacuum value that can reach also has very large difference.Large and the efficiency low (as reciprocating piston pump, sliding vane rotary pump) of some surface friction drag, but easy to manufacture, cost is low; High but the processing difficulties (as Roots pump, screw pump) of some efficiency, cost are high.Wherein reciprocating piston type vacuum pump is the most ripe and the most reliable a kind of structural type at present, it realizes air-breathing, exhaust by cylinder, can reach higher vacuum values, because piston have reliability high, keep in repair easy, easy to process, assembling is simple, the lower significant advantage of cost, thereby reciprocating piston type vacuum pump is still current most popular vacuum pump.
Reciprocating piston type vacuum pump forms of motion is that piston does linear reciprocating motion in pump chamber, the spatial volume generating period that piston and pump chamber surround is changed, to reach the object of air inlet and exhaust.The form that mostly is to rotatablely move due to providing of current driving force provides, so for driven plunger linear reciprocating motion, must drive reciprocating motion of the pistons by mechanisms such as bent axle, connecting rods, will make like this size of complete machine become large.The linear reciprocating motion of piston is acceleration and deceleration motion, and connecting rod is plane motion, certainly lead to so unbalanced inertial force and cause vibration and the mechanical noise of machine, and piston is easy to wearing and tearing, and the working life of vacuum pump is shorter.Eccentric swing has also increased force of sliding friction greatly in addition, thus consume more powerful, and rotating speed can not be too high, therefore efficiency is lower.
Comprehensive above-mentioned reason, how to find a kind of easy to manufacture, cost is low, efficiency is high, the vacuum pump of high vacuum values, is the target that Professional visitors tries hard to gain all the time always.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of this invention is to provide that a kind of noise is little, reliability is high, long service life, there is the vacuum pump of high vacuum values.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of vacuum displacement pump based on Maltese cross movement mechanism, comprise Maltese cross movement mechanism, described Maltese cross movement mechanism comprises a drive plate and a driven disc, described driven disc is provided with even number groove, described groove is radially uniformly distributed along described driven disc, described drive plate is provided with an engaging body, when described engaging body engages with described groove, described drive plate rotation can drive described driven disc rotation, the bottom of described groove is provided with through hole, described through hole forms pump chamber, in described pump chamber, be provided with the piston matching with it, two pistons that axis is located along the same line connect by rigid connector, described driven disc is around rotating with a machine mandrel, described machine mandrel is fixed, described pump chamber is connected with described machine mandrel motive sealing, described machine mandrel is provided with an inlet hole and an air outlet hole, in the time that described engaging body engages with a groove, the corresponding pump chamber of this groove is communicated with described air outlet hole, and another pump chamber that is positioned at same axis with this pump chamber is communicated with described inlet hole.
Preferably, on described driven disc, between adjacent two grooves, form arc-shaped concave, described drive plate is provided with a cam, when described engaging body and described groove depart from, described cam matches and relatively moves with described arc-shaped concave, and described driven disc does not rotate.
Preferably, the outer end of described piston is connected with one end of piston rod, and the other end of described piston rod is connected with needle roller, and described needle roller is mobilizable to be stuck in described groove.
Preferably, described driven disc is provided with 6 grooves.
Preferably, described groove is the U-groove bevel extending along described driven disc radial direction from described driven disc peripheral openings.
Preferably, in the through hole of described channel bottom, be provided with cylinder block, described cylinder block inner chamber forms described pump chamber, described cylinder block both ends open.
Preferably, described engaging body is a cylinder.
Preferably, described drive plate, driven disc are positioned on a base.
Technique scheme has following beneficial effect: this vacuum pump is in the time of work, drive plate drives its rotation by driving mechanism, after drive plate rotates to an angle, engaging body engages with a groove, along with the rotation of drive plate, engaging body moves inward along groove gradually, and then driven plunger moves inward in pump chamber, because this pump chamber is now communicated with air outlet hole, so just the gas in this pump chamber can be discharged, meanwhile, another piston being connected by rigid connector with this piston can outwards move along the pump chamber at its place, and this pump chamber is connected with inlet hole, this pump chamber can be inwardly air-breathing by inlet hole like this, as can be seen here the drive plate of this vacuum pump rotate a circle can complete once air-breathing, the process of exhaust.This vacuum pump adopts Maltese cross movement mechanism to have higher control accuracy, make full use of the mode of circular movement, move more steady, efficiency is higher, can significantly reduce vibrations and the noise of the pump housing, and loss is less, long service life, and without intake and exhaust valve block, better tightness while adopting rotary machine structure to carry out air-breathing, exhaust, can realize higher degree of vacuum.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and coordinate accompanying drawing to be elaborated to this patent.
Brief description of the drawings
Fig. 1 is the view of embodiment of the present invention engaging body while engaging with groove.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
View when Fig. 3 is embodiment of the present invention engaging body and groove disengaging.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, 2, should comprise Maltese cross movement mechanism by the vacuum displacement pump based on Maltese cross movement mechanism, this Maltese cross movement mechanism comprises a base 1, base 1 is provided with a drive plate 2 and a driven disc 3, drive plate 2 is connected with base 1 by rotating shaft 23, drive plate 2 23 rotations around the shaft, and drive plate 2 is provided with an engaging body 21 and a cam 22, engaging body 21 be a cylinder, engaging body 21 and with cam 22 positioned opposite.
Between adjacent two grooves 31 of driven disc, form arc-shaped concave 34, in the time that engaging body 21 departs from groove 31, cam 22 on drive plate 2 matches with arc-shaped concave 34, arc-shaped concave 34 can make cam 22 and arc-shaped concave 34 relatively move as guiding face, now driven disc does not rotate, adopt this structure can make drive plate 2, driven disc 3 rotate more steady, reduce noise.
As one embodiment of the present of invention, the outer end of piston 33 can also be connected with one end of piston rod, and the other end of piston rod is connected with needle roller, and needle roller is mobilizable to be stuck in groove 31.In the time that engaging body 21 driven plunger 33 move inward, just can change sliding friction between the two into rolling friction, thereby reach minimizing loss, the object of raising the efficiency like this.
As an alternative embodiment of the invention, for the ease of processing, cylinder block can be directly set in the through hole of groove 31 bottoms, make this cylinder block inner chamber form pump chamber, now opening is all answered at these cylinder block two ends.
As shown in Figure 1, 2, this vacuum pump is in the time of work, drive plate 2 drives its rotation by driving mechanism, after drive plate 2 rotates to an angle, engaging body 21 engages with a groove, along with the rotation of drive plate 2, engaging body 21 moves inward along groove gradually, and then driven plunger 33 ' pump chamber 32 ' in move inward, due to pump chamber 32 now ' be communicated with air outlet hole 37, so just this pump chamber 32 ' interior gas can be discharged; Meanwhile, outwards move with another piston 33 of this piston 33 ' be connected by rigid connector " can along the pump chamber 32 at its place ", this pump chamber 32 " is connected with inlet hole 36; this pump chamber 32 like this " can be inwardly air-breathing by inlet hole 36, all the other four pump chambers are connected with machine mandrel 35 motive sealings, and in pump chamber, state remains unchanged.The drive plate of this vacuum pump rotates a circle and can complete respectively once air-breathing and process exhaust by two relative pump chambers as can be seen here.
As shown in Figure 3, in the time that engaging body 21 departs from groove 31, cam 22 matches with arc-shaped concave 34, arc-shaped concave 34 can make cam 22 and arc-shaped concave 34 relatively move as guiding face, now driven disc 3 does not rotate, the even machine mandrel 35 of all pump chambers keeps sealing state, until engaging body 21 engages with next groove, two pump chambers of next group can carry out air-breathing, bleeding accordingly.
This vacuum pump adopts Maltese cross movement mechanism to have higher control accuracy, make full use of the mode of circular movement, move more steady, efficiency is higher, vibrations and the noise that can significantly reduce the pump housing, loss is less, and without intake and exhaust valve block, better tightness while adopting rotary machine structure to carry out air-breathing, exhaust, can realize higher degree of vacuum.
A kind of vacuum displacement pump based on Maltese cross the movement mechanism above embodiment of the present invention being provided is described in detail; for one of ordinary skill in the art; according to the thought of the embodiment of the present invention; all will change in specific embodiments and applications; in sum; this description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (8)
1. the vacuum displacement pump based on Maltese cross movement mechanism, comprise Maltese cross movement mechanism, described Maltese cross movement mechanism comprises a drive plate and a driven disc, described driven disc is provided with even number groove, described groove is radially uniformly distributed along described driven disc, described drive plate is provided with an engaging body, when described engaging body engages with described groove, described drive plate rotation can drive described driven disc rotation, it is characterized in that: the bottom of described groove is provided with through hole, described through hole forms pump chamber, in described pump chamber, be provided with the piston matching with it, two pistons that axis is located along the same line connect by rigid connector, described driven disc is around rotating with a machine mandrel, described machine mandrel is fixed, described pump chamber is connected with described machine mandrel motive sealing, described machine mandrel is provided with an inlet hole and an air outlet hole, in the time that described engaging body engages with a groove, the corresponding pump chamber of this groove is communicated with described air outlet hole, and another pump chamber that is positioned at same axis with this pump chamber is communicated with described inlet hole.
2. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, it is characterized in that: on described driven disc, between adjacent two grooves, form arc-shaped concave, described drive plate is provided with a cam, when described engaging body and described groove depart from, described cam matches and relatively moves with described arc-shaped concave, and described driven disc does not rotate.
3. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, it is characterized in that: the outer end of described piston is connected with one end of piston rod, the other end of described piston rod is connected with needle roller, and described needle roller is mobilizable to be stuck in described groove.
4. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, is characterized in that: described driven disc is provided with 6 grooves.
5. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, is characterized in that: described groove is the U-groove bevel extending along described driven disc radial direction from described driven disc peripheral openings.
6. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, is characterized in that: in the through hole of described channel bottom, be provided with cylinder block, described cylinder block inner chamber forms described pump chamber, described cylinder block both ends open.
7. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, is characterized in that: described engaging body is a cylinder.
8. the vacuum displacement pump based on Maltese cross movement mechanism according to claim 1, is characterized in that: described drive plate, driven disc are positioned on a base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110409488.XA CN102392809B (en) | 2011-12-12 | 2011-12-12 | Vacuum displacement pump based on Maltese cross movement mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110409488.XA CN102392809B (en) | 2011-12-12 | 2011-12-12 | Vacuum displacement pump based on Maltese cross movement mechanism |
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| Publication Number | Publication Date |
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| CN102392809A CN102392809A (en) | 2012-03-28 |
| CN102392809B true CN102392809B (en) | 2014-06-04 |
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| CN201110409488.XA Active CN102392809B (en) | 2011-12-12 | 2011-12-12 | Vacuum displacement pump based on Maltese cross movement mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104791086B (en) * | 2015-04-03 | 2017-12-08 | 金勤杨 | Dual rotor internal combustion engine |
| CN106922596B (en) * | 2017-03-17 | 2018-09-25 | 福建泉州远方致远自动化科技有限公司 | A kind of anti-sticking fish fish jar |
| CN111054908B (en) * | 2019-12-31 | 2022-01-07 | 兴化市永泰铝业有限公司 | Equipment and process method for manufacturing casting by recycling waste aluminum |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19635738A1 (en) * | 1995-09-04 | 1997-03-06 | Toyoda Automatic Loom Works | Variable compression piston compressor |
| DE102007053750A1 (en) * | 2007-11-12 | 2009-05-14 | Jhou, Wen-San, An-Din | Air compressor has sealing ring, which is in engagement in piston, and outer edge rib of sealing ring extends beyond over piston, to reach sliding engagement with inner edge surface of cylinder |
| CN202370780U (en) * | 2011-12-12 | 2012-08-08 | 苏州盟通利机电设备有限公司 | Positive displacement vacuum pump based on Maltese cross movement mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040028545A1 (en) * | 2002-08-06 | 2004-02-12 | Ta-Chin Wang | Cylinder assembly for a mini air compressor |
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2011
- 2011-12-12 CN CN201110409488.XA patent/CN102392809B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19635738A1 (en) * | 1995-09-04 | 1997-03-06 | Toyoda Automatic Loom Works | Variable compression piston compressor |
| DE102007053750A1 (en) * | 2007-11-12 | 2009-05-14 | Jhou, Wen-San, An-Din | Air compressor has sealing ring, which is in engagement in piston, and outer edge rib of sealing ring extends beyond over piston, to reach sliding engagement with inner edge surface of cylinder |
| CN202370780U (en) * | 2011-12-12 | 2012-08-08 | 苏州盟通利机电设备有限公司 | Positive displacement vacuum pump based on Maltese cross movement mechanism |
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| CN102392809A (en) | 2012-03-28 |
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Addressee: SUZHOU MACTUNI ELECTROMECHANICAL EQUIPMENT Co.,Ltd. Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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Address after: 215000 Jiangsu city of Suzhou province Wuzhong District Swan Dang Lu Yuexi Fumin Industrial Zone 5 Applicant after: SUZHOU MACTUNI ELECTROMECHANICAL EQUIPMENT Co.,Ltd. Address before: 215000, room 6107, building 6, Suzhou innovation science and Technology Park, No. 14 tomb, Pingjiang District, Suzhou, Jiangsu Applicant before: SUZHOU MACTUNI ELECTROMECHANICAL EQUIPMENT Co.,Ltd. |
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Address after: 215000 Jiangsu city of Suzhou province Wuzhong District Swan Dang Lu Yuexi Fumin Industrial Zone 5 Patentee after: Suzhou Union Tongli Environmental Technology Co.,Ltd. Address before: 215000 Jiangsu city of Suzhou province Wuzhong District Swan Dang Lu Yuexi Fumin Industrial Zone 5 Patentee before: SUZHOU MACTUNI ELECTROMECHANICAL EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20240312 Address after: 215000, Unit 8, Room 1312, Building 2, No. 21 Intercity Road, High tech Zone, Suzhou City, Jiangsu Province (Cluster Registration) Patentee after: Suzhou Menjie Intelligent Technology Co.,Ltd. Country or region after: China Address before: 215000 Building 5, Yuexi Fumin Industrial Zone, tianedang Road, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: Suzhou Union Tongli Environmental Technology Co.,Ltd. Country or region before: China |