CN210509587U - Vertical screw vacuum pump - Google Patents
Vertical screw vacuum pump Download PDFInfo
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- CN210509587U CN210509587U CN201920949822.2U CN201920949822U CN210509587U CN 210509587 U CN210509587 U CN 210509587U CN 201920949822 U CN201920949822 U CN 201920949822U CN 210509587 U CN210509587 U CN 210509587U
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- 230000007704 transition Effects 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a vertical screw vacuum pump, a pump shell and a driving motor are arranged along the vertical direction, a top bearing seat is arranged at the upper end of the pump shell, and a top cover covers the top bearing seat; the left-handed screw and the right-handed screw are arranged along the vertical direction and are arranged in the cavity of the pump shell in an engaged manner; the upper end of the left-handed screw and the upper end of the right-handed screw are both connected to the top bearing seat, the lower end of the left-handed screw and the lower end of the right-handed screw sequentially penetrate through the bottom bearing seat and the bottom plate to be respectively connected with a pair of synchronous gears which are externally meshed, a driving gear in the pair of synchronous gears is externally meshed with a transition gear, the transition gear is externally meshed with a motor gear, and the driving motor drives the motor gear. Two screw rods adopt vertical installation mode in this application, and after vacuum was formed in the pump casing, two screw rods can receive the thrust that ambient atmosphere pressed to last for the axial force that the bearing of installation bore in the bottom bearing seat bore reduces, prolongs the life of bearing.
Description
Technical Field
The utility model relates to the technical field of pumps, specifically say, relate to a vertical screw vacuum pump.
Background
At present, a screw vacuum pump gradually becomes a domestic environment-friendly preferred product due to the characteristics of compact structure, high pumping speed, no need of lubrication, no friction of working parts and the like, and is widely applied to the fields of enterprises with higher requirements on clean vacuum, such as pharmacy, chemical industry, semiconductors and the like. However, most of the existing screw vacuum pumps are horizontal, and the horizontal screw vacuum pump has the following problems:
(1) due to gravity and flow velocity of the pumping air flow, particles and condensed gas can be deposited in the pump body, and the screw rod is easy to be blocked and damaged;
(2) the occupied area and the installation space are large;
(3) the screw shaft is transversely installed, and the gravity center is easy to droop after long-term placement.
For example, utility model patent publication No. CN 205117725U: the screw vacuum pump capable of cleaning dust is a horizontal type screw vacuum pump in the patent, and although the problem of dust deposition in a pump body can be solved to a certain extent, the problem still exists, so that a vertical type screw vacuum pump is needed to be designed for overcoming the problems existing in the existing horizontal type screw vacuum pump.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structure compacter, flow is even in succession, work is steady, area is few vertical screw vacuum pump to give and working method.
The utility model provides a technical scheme that above-mentioned problem adopted is: a vertical screw vacuum pump, includes the pump casing, its characterized in that: the device also comprises a driving motor, a gear box, a bottom plate, a bottom bearing seat, a top cover, a left-handed screw, a right-handed screw, a pair of externally meshed synchronous gears, a transition gear and a motor gear; the pump shell and the driving motor are arranged in the vertical direction, the bottom plate is arranged on the gear box, and the synchronous gear, the transition gear and the motor gear which are meshed with each other are arranged in the gear box; the bottom bearing seat is arranged at the lower end of the pump shell, the top bearing seat is arranged at the upper end of the pump shell, and the top cover covers the top bearing seat; the left-handed screw and the right-handed screw are arranged in the vertical direction and are arranged in a cavity of the pump shell in an engaged manner; the upper end of the left-handed screw and the upper end of the right-handed screw are both connected to the top bearing seat, the lower end of the left-handed screw and the lower end of the right-handed screw sequentially penetrate through the bottom bearing seat and the bottom plate and are respectively connected with a pair of synchronous gears which are externally meshed, one gear of the pair of synchronous gears is a driving gear, the driving gear is externally meshed with a transition gear, the transition gear is externally meshed with a motor gear, and the driving motor drives the motor gear.
Preferably, the joints of the upper end of the left-handed screw and the upper end of the right-handed screw and the top bearing seat are respectively provided with a bearing, and the joints of the lower end of the left-handed screw and the lower end of the right-handed screw and the bottom bearing seat are also respectively provided with a bearing.
Preferably, because gear and bearing need lubricate, consequently the upper end of levogyration screw rod and the upper end of dextrorotation screw rod with the junction of top bearing frame all sets up seal structure, and this seal structure includes the one-level labyrinth seal, second grade labyrinth seal and the lip seal that top-down installed in proper order, and is same, the lower extreme of levogyration screw rod and the lower extreme of dextrorotation screw rod and the junction of bottom bearing frame also all sets up above-mentioned seal structure, and its one-level labyrinth seal, second grade labyrinth seal and lip seal install in proper order from bottom to top. During the operation of the vacuum pump, the primary labyrinth seal is in interference fit with the screw rod and can play a primary sealing role on lubricating oil, the secondary labyrinth seal and the lip seal are in interference fit with inner holes of the bottom bearing seat and the top bearing seat, the lip seal is tightly attached to the screw rod due to the elasticity of the lip seal, so that the sealing purpose is achieved, the primary labyrinth seal and the secondary labyrinth seal mainly play a role in further preventing the lubricating oil from leaking after passing through the primary labyrinth seal, the primary labyrinth seal and the secondary labyrinth seal do not move relatively and are prevented from being worn and abraded mutually
Preferably, the pump housing is provided with an air inlet and an air outlet, the air inlet is located at the upper position of the pump housing, and the air outlet is located at the lower position of the pump housing.
Preferably, the left-handed screw and the right-handed screw are of equal pitch and can also be of variable pitch.
Preferably, the left-handed screw and the right-handed screw are of equal diameter and can also be of variable diameter.
Preferably, all be equipped with water cooling circulation system on pump case, gear box, bottom plate and the top cap, the pump case outside is equipped with the radiating block to reach whole equipment cooling radiating good effect.
Preferably, four mounting feet are arranged at the bottom of the gear box, so that the equipment is convenient to transport and mount; all be equipped with on top cap and the gear box and look the oil glass, be convenient for observe lubricated condition, avoid lubricated defect.
Preferably, two vertical intermediate shafts are installed in the gear box, one intermediate shaft is used for installing a motor gear, the other intermediate shaft is used for installing a transition gear, and the end part of an output shaft of the driving motor is connected with the intermediate shaft provided with the motor gear through a coupler.
The utility model discloses still provide another technical scheme: the working method of the vertical screw vacuum pump is characterized in that: the driving motor drives the motor gear to rotate, and power is transmitted to the pair of synchronous gears through the transition gear, so that the left-handed screw and the right-handed screw are driven to rotate; the air enters the pump cavity through the air inlet in the upper part of the pump shell, a plurality of cavities are formed between the left-handed screw and the right-handed screw and the inner wall of the pump shell, and after the left-handed screw and the right-handed screw rotate to do work in a mode of opposite rotating directions, the air in the plurality of cavities regularly moves from the air inlet side to the air outlet side, so that the air is conveyed out in a low-swirling mode, and air suction, compression and exhaust are realized.
Compared with the prior art, the utility model, have following advantage and effect: 1. the vertical installation mode is adopted, so that pumping media are discharged from top to bottom, deposition of condensable gas and liquid is reduced, meanwhile, the thrust generated by rotation of the screw and the gravity action of the media are added, and the pumping media are discharged more quickly and thoroughly; 2. the two screws adopt a vertical installation mode, and after vacuum is formed in the pump shell, the two screws can bear upward thrust of ambient atmosphere, so that the axial force borne by the bearing installed in the bottom bearing seat is reduced, and the service life of the bearing is prolonged; 3. the two screws adopt a vertical installation mode, so that screw shafts cannot bend due to gravity center offset, and the service life of the screws is prolonged; the vertical installation is adopted, so that the flow is continuous and uniform, the work is stable and easy to adjust, the number of easily damaged parts is small, and the management and the maintenance are more convenient; 4. the driving motor and the pump shell are vertically arranged, so that the occupied area is reduced, the structure is more compact, and the transportation and the installation are convenient.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 2.
Description of reference numerals: the device comprises a driving motor 1, a gear box 2, a bottom plate 3, a bottom bearing seat 4, a pump shell 5, an air inlet a, an air outlet b, a top bearing seat 6, a top cover 7, a left-handed screw 8, a right-handed screw 9, a coupler 10, an intermediate shaft 11, a synchronous gear 12, a transition gear 13, a motor gear 14, a bearing 15, a primary labyrinth seal 16, a secondary labyrinth seal 17 and a lip seal 18.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 3, the present embodiment is a vertical screw vacuum pump, which includes a pump housing 5, a driving motor 1, a gear box 2, a bottom plate 3, a bottom bearing seat 4, a top bearing seat 6, a top cover 7, a left-handed screw 8, a right-handed screw 9, a pair of external-meshed synchronous gears 12, a transition gear 13 and a motor gear 14.
In this embodiment, the pump housing 5 and the driving motor 1 are both arranged along the vertical direction, the pump housing 5 is provided with an air inlet a and an air outlet b, the air inlet a is located at the upper part of the pump housing 5, and the air outlet b is located at the lower part of the pump housing 5. The base plate 3 is mounted on the gear case 2, and a pair of externally meshed synchronizing gears 12, a transition gear 13 and a motor gear 14 are disposed inside the gear case 2. The bottom bearing block 4 is installed at the lower end of the pump housing 5, the top bearing block 6 is installed at the upper end of the pump housing 5, and the top cover 7 covers the top bearing block 6.
In this embodiment, the left-handed screw 8 and the right-handed screw 9 are vertically disposed and engaged with each other in the cavity of the pump housing 5, and the screws are of the same pitch or variable pitch, and are of the same diameter or variable diameter. The upper end of a left-handed screw 8 and the upper end of a right-handed screw 9 are both connected to a top bearing seat 6, the lower end of the left-handed screw 8 and the lower end of the right-handed screw 9 both sequentially penetrate through a bottom bearing seat 4 and a bottom plate 3 and are respectively connected with a pair of synchronous gears 12 which are externally meshed, one gear of the pair of synchronous gears 12 is a driving gear, the driving gear is externally meshed with a transition gear 13, the transition gear 13 is externally meshed with a motor gear 14, the driving motor 1 drives the motor gear 14, and the function of changing the transmission ratio can be achieved by changing the number of teeth of the transition gear 13.
In this embodiment, bearings 15 are disposed at the joints between the upper end of the left-handed screw 8 and the upper end of the right-handed screw 9 and the top bearing block 6, and similarly, bearings 15 are disposed at the joints between the lower end of the left-handed screw 8 and the lower end of the right-handed screw 9 and the bottom bearing block 4. Because the gear and the bearing need to be lubricated, sealing structures are arranged at the joints of the upper end of the left-handed screw 8 and the upper end of the right-handed screw 9 and the top bearing seat 6 respectively, each sealing structure comprises a first-stage labyrinth seal 16, a second-stage labyrinth seal 17 and a lip seal 18 which are sequentially arranged from top to bottom, and similarly, the sealing structures are arranged at the joints of the lower end of the left-handed screw 8 and the lower end of the right-handed screw 9 and the bottom bearing seat 4 respectively, and the first-stage labyrinth seal 16, the second-stage labyrinth seal 17 and the lip seals 18 are sequentially arranged from bottom to top.
In the operation of the vacuum pump, the primary labyrinth seal 16 is in interference fit with the screw, a primary sealing function can be performed on lubricating oil, the secondary labyrinth seal 17 and the lip seal 18 are in interference fit with inner holes of the bottom bearing seat 4 and the top bearing seat 6, the lip seals are tightly attached to the screw due to the elasticity of the lip seals, so that the sealing purpose is achieved, the secondary labyrinth seal 17 and the lip seal 18 mainly serve to further prevent the lubricating oil from leaking after passing through the primary labyrinth seal 16, and the primary labyrinth seal 16 and the secondary labyrinth seal 17 do not move relatively and are prevented from being worn away from each other. In order to avoid lubrication defects, the oil sight glasses are arranged on the top cover 7 and the gear box 2, so that lubrication conditions can be observed conveniently.
In this embodiment, all be equipped with water cooling circulation system on pump case 5, gear box 2, bottom plate 3 and the top cap 7, pump case 5 outside is equipped with the radiating block to reach the radiating good effect of whole equipment cooling. As for the mechanism of the water cooling circulation system and the structure of the rapid heat dissipation, the prior art can be referred to.
In the embodiment, four mounting feet are arranged at the bottom of the gear box 2, so that the equipment is convenient to transport and mount; two vertical intermediate shafts 11 are arranged in the gear box 2, one intermediate shaft 11 is used for installing a motor gear 14, the other intermediate shaft 11 is used for installing a transition gear 13, and the end part of an output shaft of the driving motor 1 is connected with the intermediate shaft 11 provided with the motor gear 14 through a coupler 10.
In this embodiment, the working method of the vertical screw vacuum pump is as follows: the driving motor 1 drives the motor gear 14 to rotate, and power is transmitted to the pair of synchronous gears 12 through the transition gear 13, so that the left-handed screw 8 and the right-handed screw 9 are driven to rotate; the air enters the pump cavity through the air inlet a at the upper part of the pump shell 5, a plurality of cavities are formed between the left-handed screw 8 and the right-handed screw 9 and the inner wall of the pump shell 5, and after the left-handed screw 8 and the right-handed screw 9 rotate in the opposite rotating directions to do work, the air in the cavities regularly moves from the air inlet side to the air outlet side, so that the air is conveyed out in a low-swirling flow mode, and air suction, compression and exhaust are realized.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (9)
1. A vertical screw vacuum pump comprising a pump housing (5), characterized in that: the gear box is characterized by also comprising a driving motor (1), a gear box (2), a bottom plate (3), a bottom bearing seat (4), a top bearing seat (6), a top cover (7), a left-handed screw (8), a right-handed screw (9), a pair of externally meshed synchronous gears (12), a transition gear (13) and a motor gear (14); the pump shell (5) and the driving motor (1) are arranged along the vertical direction, the bottom plate (3) is installed on the gear box (2), and the pair of externally meshed synchronous gears (12), the transition gear (13) and the motor gear (14) are all arranged inside the gear box (2); the bottom bearing seat (4) is arranged at the lower end of the pump shell (5), the top bearing seat (6) is arranged at the upper end of the pump shell (5), and the top cover (7) covers the top bearing seat (6); the left-handed screw (8) and the right-handed screw (9) are arranged in the vertical direction and are arranged in a cavity of the pump shell (5) in an intermeshing manner; the upper end of levogyration screw rod (8) and the upper end of dextrorotation screw rod (9) are all connected on top bearing frame (6), thereby the lower extreme of levogyration screw rod (8) and the lower extreme of dextrorotation screw rod (9) all pass bottom bearing frame (4) and bottom plate (3) in proper order and are connected with a pair of intermeshing synchronizing gear (12) respectively, a gear in a pair of synchronizing gear (12) is the driving gear, this driving gear and transition gear (13) intermeshing, transition gear (13) and motor gear (14) intermeshing, driving motor (1) driving motor gear (14).
2. The vertical screw vacuum pump according to claim 1, wherein: the junction of the upper end of levogyration screw rod (8) and the upper end of dextrorotation screw rod (9) with top bearing frame (6) all sets up bearing (15), and is same, the lower extreme of levogyration screw rod (8) and the lower extreme of dextrorotation screw rod (9) with the junction of bottom bearing frame (4) also all sets up bearing (15).
3. The vertical screw vacuum pump according to claim 1, wherein: the upper end of levogyration screw rod (8) and the upper end of dextrorotation screw rod (9) with the junction of apical axis bearing frame (6) all sets up seal structure, and this seal structure includes one-level labyrinth seal (16), second grade labyrinth seal (17) and lip seal (18) that top-down installed in proper order, and is same, the lower extreme of levogyration screw rod (8) and the lower extreme of dextrorotation screw rod (9) with the junction of base bearing frame (4) also all sets up above-mentioned seal structure, and its one-level labyrinth seal (16), second grade labyrinth seal (17) and lip seal (18) install in proper order from bottom to top.
4. The vertical screw vacuum pump according to claim 1, wherein: the pump casing (5) is provided with an air inlet (a) and an air outlet (b), the air inlet (a) is positioned at the upper part of the pump casing (5), and the air outlet (b) is positioned at the lower part of the pump casing (5).
5. The vertical screw vacuum pump according to claim 1, wherein: the left-handed screw (8) and the right-handed screw (9) are of equal pitch.
6. The vertical screw vacuum pump according to claim 1, wherein: the left-handed screw (8) and the right-handed screw (9) are of equal diameter.
7. The vertical screw vacuum pump according to claim 1, wherein: the water cooling circulation system is characterized in that the pump shell (5), the gear box (2), the bottom plate (3) and the top cover (7) are all provided with a water cooling circulation system, and a radiating block is arranged outside the pump shell (5).
8. The vertical screw vacuum pump according to claim 1, wherein: the bottom of the gear box (2) is provided with four mounting feet; the top cover (7) and the gear box (2) are both provided with oil sight glasses.
9. The vertical screw vacuum pump according to claim 1, wherein: two vertical intermediate shafts (11) are arranged in the gear box (2), one intermediate shaft (11) is used for installing a motor gear (14), the other intermediate shaft (11) is used for installing a transition gear (13), and the end part of an output shaft of the driving motor (1) is connected with the intermediate shaft (11) provided with the motor gear (14) through a coupler (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949822.2U CN210509587U (en) | 2019-06-21 | 2019-06-21 | Vertical screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920949822.2U CN210509587U (en) | 2019-06-21 | 2019-06-21 | Vertical screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210509587U true CN210509587U (en) | 2020-05-12 |
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ID=70579620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920949822.2U Active CN210509587U (en) | 2019-06-21 | 2019-06-21 | Vertical screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210509587U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374869A (en) * | 2019-06-21 | 2019-10-25 | 杭州萨莫雷斯科技有限公司 | A kind of vertical screw vacuum pump and its working method |
| CN113309503A (en) * | 2021-06-30 | 2021-08-27 | 荆州大方智能科技股份有限公司 | Fracturing pump |
-
2019
- 2019-06-21 CN CN201920949822.2U patent/CN210509587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374869A (en) * | 2019-06-21 | 2019-10-25 | 杭州萨莫雷斯科技有限公司 | A kind of vertical screw vacuum pump and its working method |
| CN113309503A (en) * | 2021-06-30 | 2021-08-27 | 荆州大方智能科技股份有限公司 | Fracturing pump |
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Address after: Room 922, 9th Floor, No. 41 Pingjishan Road, Xihu District, Hangzhou City, Zhejiang Province, 310023 Patentee after: Hangzhou Jiuzheng Technology Co.,Ltd. Address before: Room 922, 9th Floor, No. 41 Pingjishan Road, Xihu District, Hangzhou City, Zhejiang Province, 310023 Patentee before: Hangzhou Samores Technology Co.,Ltd. |
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Address after: Building 4, No. 29, Jiaqi Road, Xianlin Street, Yuhang District, Hangzhou City, Zhejiang Province 311122 Patentee after: Hangzhou Jiuzheng Technology Co.,Ltd. Address before: Room 922, 9th Floor, No. 41 Pingjishan Road, Xihu District, Hangzhou City, Zhejiang Province, 310023 Patentee before: Hangzhou Jiuzheng Technology Co.,Ltd. |