CN208564969U - Dry screw vacuum pump - Google Patents
Dry screw vacuum pump Download PDFInfo
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- CN208564969U CN208564969U CN201821239139.1U CN201821239139U CN208564969U CN 208564969 U CN208564969 U CN 208564969U CN 201821239139 U CN201821239139 U CN 201821239139U CN 208564969 U CN208564969 U CN 208564969U
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- screw rod
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Abstract
The utility model provides a kind of dry screw vacuum pump, belongs to vacuum pump technology field.It solves the problems, such as that the revolving speed of screw rod in existing dry screw vacuum pump is low, reliability is low, heat dissipation effect is poor.It includes pedestal and the pump housing on pedestal, the front end of the pump housing is equipped with air inlet, its rear end is equipped with gas outlet, the first screw rod and the second screw rod are equipped in the pump housing, first screw rod is equipped with male rotor, second screw rod, which is equipped with, to be cooperatively connected to realize the female rotor of synchronous backward rotation with male rotor, the rear end of the pump housing is equipped with gear housing, the rear end of gear housing is equipped with motor case body, first screw rod and the second screw rod pass through bearing one respectively and are mounted on gear housing, and first screw rod and the second screw rod rear end pass through gear housing after be mounted on motor case body by bearing two respectively, motor is equipped in motor case body, transmission component motor-driven is equipped in gear housing.The utility model has many advantages, such as high reliablity, good heat dissipation effect, applied widely.
Description
Technical field
The utility model belongs to vacuum pump technology field, is related to a kind of dry screw vacuum pump.
Background technique
Dry screw vacuum pump be using a pair of of screw rod, make in pump case synchronous high-speed reversely rotate and the air-breathing that generates and
The air-extractor of scavenging action, screw rod are mounted in pump case by bearing support, there is certain gap between screw rod and screw rod,
When pump work, between each other without friction, smooth running, low noise, working chamber is without lubricating oil.Therefore, dry type screw pump can be taken out
Except the gas occasion containing a large amount of water vapours and a small amount of dust, ultimate vacuum is higher, and consumption power is lower, has energy conservation, exempts to tie up
The advantages that repairing.
If Chinese patent discloses a kind of vacuum pump [notification number CN204984884U], including a pair of of the spiral shell being driven by motor
Bar, a pair of of screw rod are mounted in pump case by bearing support, and by intermeshing driving gear and driven gear be cooperatively connected with
Realize synchronous backward rotation；Sealing device is equipped on the outside of the pump case of the junction of screw rod and pump case；The screw pitch of screw rotor by
Air inlet to exhaust outlet direction gradually becomes smaller.
Motor is not integrated in vacuum pump in the vacuum pump, and is driven by way of the direct-connected motor of driving screw axis
Dynamic, motor is synchronous with screw rod to be turned, and the revolving speed of screw rod is low, and the attainable vacuum degree of institute is limited；And it pumps internal two screw rods high speed and transports
The heat generated when turning cannot radiate in time, cause vacuum pump operation unstable, and reliability reduces, and service life is short.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of dry type of high reliablity
Screw vacuum pump.
The purpose of this utility model can be realized by the following technical scheme:
The front end of dry screw vacuum pump, the pump housing including pedestal and on pedestal, the pump housing is equipped with air inlet,
Rear end is equipped with gas outlet, and the first screw rod and the second screw rod are equipped in the pump housing, and first screw rod is equipped with male rotor,
Second screw rod, which is equipped with, to be cooperatively connected to realize the female rotor of synchronous backward rotation with male rotor, which is characterized in that institute
The rear end for stating the pump housing is equipped with gear housing, and the rear end of the gear housing is equipped with motor case body, first screw rod and second
Screw rod passes through bearing one respectively and is mounted on gear housing, and the rear end of the first screw rod and the second screw rod is divided after gear housing
Not Tong Guo bearing two be mounted on motor case body, motor is equipped in the motor case body, be equipped in the gear housing by
Motor-driven transmission component.
In above-mentioned dry screw vacuum pump, first screw rod is parallel with the second screw rod, and the motor is located at
First screw rod is parallel with the first screw rod with the output shaft of the top of the second screw rod and motor, and the transmission component includes coaxial solid
The synchromesh gear one being scheduled on the first screw rod and the synchromesh gear two being coaxially fixed on the second screw rod, the synchromesh gear one
It is engaged with synchromesh gear two, the output shaft of the motor is equipped with driving wheel, and first screw rod is equipped with driven wheel, described
Driving wheel engaged with driven wheel.By changing the transmission ratio of driving wheel and driven wheel, the revolving speed of the first screw rod can be changed.
In above-mentioned dry screw vacuum pump, there is axis hole one in first screw rod, in second screw rod
With axis hole two.One end of axis hole one is connected with oil pipe, and one end of axis hole two is also connected with oil pipe, when the first screw rod and the second spiral shell
Bar work when, cooling oil is injected in axis hole one and axis hole two by oil inlet pipe, to the first screw rod, the second screw rod, male rotor and
Female rotor is cooled down, and is improved service life.
In above-mentioned dry screw vacuum pump, the lower part of the motor case body is fuel tank, is had on first screw rod
There is the oil outlet one being located above fuel tank, the oil outlet one is connected to axis hole one；Have on second screw rod and is located at
Oil outlet two above fuel tank, the oil outlet two are connected to axis hole two.The front end of axis hole one and axis hole two is closed, axis hole one
It is connect with the rear end of axis hole two with oil pipe, cooling oil enters in axis hole one and axis hole two through oil pipe when work, then by fuel-displaced
Hole one and oil outlet two flow out, and take away the heat generated by the first screw rod, the second screw rod, male rotor and female rotor.What is flowed out is cold
But oil, which is fallen directly into, is located in the fuel tank of two lower section of oil outlet one and oil outlet.
In above-mentioned dry screw vacuum pump, the rear end of the motor case body is equipped with fan housing, outside the fan
The cooling fan for being sheathed on motor output shaft rear end is equipped in cover.When motor works, cooling fan movement is driven, motor is carried out
It is cooling.
In above-mentioned dry screw vacuum pump, the outside of the pump housing is equipped with radiating fin one.Radiating fin one is set
The heat dissipation area for improving the pump housing is conducive to pump housing heat dissipation.
In above-mentioned dry screw vacuum pump, the outside of the gear housing is equipped with radiating fin two.Radiating fin is set
Piece two improves the heat dissipation area of gear housing, is conducive to the heat dissipation of gear housing.
In above-mentioned dry screw vacuum pump, the outside of the motor case body is equipped with radiating fin three.Radiating fin is set
Piece three improves the heat dissipation area of motor case body, is conducive to the heat dissipation of motor case body.
In above-mentioned dry screw vacuum pump, the male rotor is in variable-pitch auger shape, and the female rotor is in change
Pitch auger shape.It realizes more series, and obtain lower final pressure by considerably less component, male rotor with
Female rotor rotates inward in a reverse direction, and gas chamber between the two, will regularly from air inlet toward air outlet side " movement "
Gas is carried out in a manner of low swirling flow.
Set in the air outlet side of the pump housing there are two axle envelope, one of axle envelope between the first screw rod and gear housing,
Between the second screw rod and gear housing, two axle envelopes are all combined by piston ring and the group of labyrinth sealing another axle envelope
At due to no any contact, axle envelope is hardly worn when work, effectively extends service life.
Compared with prior art, this dry screw vacuum pump has the advantage that the first screw rod is stretched to the second screw rod
Pumping intracorporal part is cantilever design, and without working media in pump chamber, gets clear clean, pollution-free, can be recycled valuable gases, in the pump housing
Contactless friction member, it is insensitive to dust, it is applied widely, can in rugged environment long-play；Male rotor with
Female rotor is cooperatively connected to realize that synchronous backward rotates, and by considerably less component, realizes more series, and can obtain lower
Final pressure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of preferred embodiment provided by the utility model.
Fig. 2 is the front view of preferred embodiment provided by the utility model.
Fig. 3 is cross-sectional view at A-A in Fig. 2 provided by the utility model.
Fig. 4 is cross-sectional view at B-B in Fig. 2 provided by the utility model.
In figure, 1, pedestal；2, the pump housing；3, air inlet；4, gas outlet；5, the first screw rod；6, the second screw rod；7, male rotor；
8, female rotor；9, gear housing；10, motor case body；11, bearing one；12, bearing two；13, motor；14, synchromesh gear one；15,
Synchromesh gear two；16, driving wheel；17, driven wheel；18, axis hole one；19, axis hole two；20, fan housing；21, cooling fan；
22, radiator；23, radiating fin one；24, radiating fin two；25, radiating fin three.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Dry screw vacuum pump as depicted in figs. 1 and 2, the pump housing 2 including pedestal 1 and on pedestal 1, the pump housing 2
Front end is equipped with air inlet 3, and its rear end is equipped with gas outlet 4, as shown in figure 3, the first screw rod 5 and the second screw rod 6 are equipped in the pump housing 2,
First screw rod 5 is equipped with male rotor 7, and the second screw rod 6, which is equipped with, to be cooperatively connected to realize the yin of synchronous backward rotation with male rotor 7
Rotor 8.As shown in Figure 1, the rear end of the pump housing 2 is equipped with gear housing 9, the rear end of gear housing 9 is equipped with motor case body 10, such as Fig. 3
Shown, the first screw rod 5 and the second screw rod 6 are mounted on gear housing 9 by bearing 1 respectively, and the first screw rod 5 and second
The rear end of screw rod 6 is mounted on motor case body 10 by bearing 2 12 respectively after passing through gear housing 9, as shown in figure 4, motor housing
It is equipped with motor 13 in body 10, is equipped with the transmission component driven by motor 13 in gear housing 9.
As shown in figure 3, the first screw rod 5 is parallel with the second screw rod 6, motor 13 is located at the upper of the first screw rod 5 and the second screw rod 6
The output shaft of side and motor 13 is parallel with the first screw rod 5, as shown in figure 3, transmission component includes coaxially being fixed on the first screw rod 5
Synchromesh gear 1 and the synchromesh gear 2 15 that is coaxially fixed on the second screw rod 6, synchromesh gear 1 and synchromesh gear two
15 engagements, as shown in figure 4, the output shaft of motor 13 is equipped with driving wheel 16, the first screw rod 5 is equipped with driven wheel 17, driving wheel
16 engage with driven wheel 17.
As shown in figure 3, having axis hole 1 in the first screw rod 5, there is axis hole 2 19 in the second screw rod 6.Axis hole 1
One end is connected with oil pipe, and one end of axis hole 2 19 is also connected with oil pipe, when the first screw rod 5 and the second screw rod 6 work, by into
Oil pipe injects cooling oil in axis hole 1 and axis hole 2 19, to the first screw rod 5, the second screw rod 6, male rotor 7 and female rotor 8 into
Row cooling, improves service life.
In the present embodiment, it is fuel tank in the lower part of motor case body 10, has on the first screw rod 5 and be located at going out above fuel tank
Oilhole one, oil outlet one are connected to axis hole 1, have the oil outlet two being located above fuel tank, oil outlet two on the second screw rod 6
It is connected to axis hole 2 19.The front end of axis hole 1 and axis hole 2 19 is closed, and the rear end and oil pipe of axis hole 1 and axis hole 2 19 connect
It connecing, cooling oil enters in axis hole 1 and axis hole 2 19 through oil pipe when work, then flowed out by oil outlet one and oil outlet two,
Take away the heat generated by the first screw rod 5, the second screw rod 6, male rotor 7 and female rotor 8.The cooling oil of outflow is fallen directly into place
In in the fuel tank of two lower section of oil outlet one and oil outlet.
As shown in figure 3, the rear end of motor case body 10 is equipped with fan housing 20, it is equipped in fan housing 20 and is sheathed on motor 13
Export the cooling fan 21 of shaft rear end.When motor 13 works, drives cooling fan 21 to act, motor 13 is cooled down.
As shown in figure 3, the rear end of fan housing 20 is equipped with radiator 22.
As shown in Figure 1, Figure 2 and Figure 3, the outside of the pump housing 2 is equipped with radiating fin 1, and setting radiating fin 1 improves
The heat dissipation area of the pump housing 2 is conducive to the heat dissipation of the pump housing 2；The outside of gear housing 9 is equipped with radiating fin 2 24, and radiating fin is arranged
2 24 improve the heat dissipation area of gear housing 9, are conducive to the heat dissipation of gear housing 9；The outside of motor case body 10 is equipped with heat dissipation
Fin 3 25, setting radiating fin 3 25 improve the heat dissipation area of motor case body 10, are conducive to the heat dissipation of motor case body 10.
As shown in figure 3, male rotor 7 is in variable-pitch auger shape, female rotor 8 is in variable-pitch auger shape.It passes through considerably less
Component realizes more series, and obtains lower final pressure, and male rotor 7 and female rotor 8 are in a reverse direction to inward turning
Turn, gas chamber between the two is transported gas regularly from air inlet 3 toward 4 side of gas outlet " movement " in a manner of low swirling flow
It goes out.
Set in 4 side of the gas outlet of the pump housing 2 there are two axle envelope, one of axle envelope be located at the first screw rod 5 and gear housing 9 it
Between, another axle envelope is between the second screw rod 6 and gear housing 9, and two axle envelopes are all by the group of piston ring and labyrinth sealing
It is combined into, due to no any contact, axle envelope is hardly worn when work, effectively extends service life.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (9)
1. a kind of dry screw vacuum pump, including pedestal (1) and the pump housing (2) being set on pedestal (1), before the pump housing (2)
End is equipped with air inlet (3), and its rear end is equipped with gas outlet (4), and the first screw rod (5) and the second screw rod are equipped in the pump housing (2)
(6), first screw rod (5) is equipped with male rotor (7), and second screw rod (6), which is equipped with to cooperate with male rotor (7), to be connected
Connecing the female rotor (8) to realize synchronous backward rotation, which is characterized in that the rear end of the pump housing (2) is equipped with gear housing (9),
The rear end of the gear housing (9) is equipped with motor case body (10), and first screw rod (5) passes through respectively with the second screw rod (6)
Bearing one (11) is mounted on gear housing (9), and the rear end of the first screw rod (5) and the second screw rod (6) passes through gear housing (9)
It is mounted on motor case body (10) by bearing two (12) respectively afterwards, is equipped with motor (13) in the motor case body (10), institute
The transmission component driven by motor (13) is equipped in the gear housing (9) stated.
2. dry screw vacuum pump according to claim 1, which is characterized in that first screw rod (5) and the second spiral shell
In parallel, the motor (13) is located at the top of the first screw rod (5) and the second screw rod (6) and the output shaft of motor (13) to bar (6)
It is parallel with the first screw rod (5), the transmission component include the synchromesh gear one (14) being coaxially fixed on the first screw rod (5) and
The synchromesh gear two (15) being coaxially fixed on the second screw rod (6), the synchromesh gear one (14) and synchromesh gear two (15)
The output shaft of engagement, the motor (13) is equipped with driving wheel (16), and first screw rod (5) is equipped with driven wheel (17),
The driving wheel (16) is engaged with driven wheel (17).
3. dry screw vacuum pump according to claim 1 or 2, which is characterized in that have in first screw rod (5)
Axis hole one (18), second screw rod (6) is interior to have axis hole two (19).
4. dry screw vacuum pump according to claim 3, which is characterized in that the lower part of the motor case body (10) is oil
Case has the oil outlet one being located above fuel tank on first screw rod (5), and the oil outlet one and axis hole one (18) are even
It is logical；There is the oil outlet two being located above fuel tank, the oil outlet two and axis hole two (19) are even on second screw rod (6)
It is logical.
5. dry screw vacuum pump according to claim 1 or 2, which is characterized in that the rear end of the motor case body (10)
The cooling fan for being sheathed on motor (13) output shaft rear end is equipped with equipped with fan housing (20), in the fan housing (20)
(21)。
6. dry screw vacuum pump according to claim 1, which is characterized in that the outside of the pump housing (2) is equipped with heat dissipation
Fin one (23).
7. dry screw vacuum pump according to claim 1, which is characterized in that the outside of the gear housing (9) is equipped with
Radiating fin two (24).
8. dry screw vacuum pump according to claim 1, which is characterized in that the outside of the motor case body (10) is equipped with
Radiating fin three (25).
9. dry screw vacuum pump according to claim 1, which is characterized in that the male rotor (7) is in varying pitch spiral shell
Shape is revolved, the female rotor (8) is in variable-pitch auger shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239139.1U CN208564969U (en) | 2018-08-02 | 2018-08-02 | Dry screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239139.1U CN208564969U (en) | 2018-08-02 | 2018-08-02 | Dry screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208564969U true CN208564969U (en) | 2019-03-01 |
Family
ID=65449349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821239139.1U Active CN208564969U (en) | 2018-08-02 | 2018-08-02 | Dry screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208564969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365236A (en) * | 2020-03-27 | 2020-07-03 | 宁波英德菲尔机械科技有限公司 | Dry screw compressor |
-
2018
- 2018-08-02 CN CN201821239139.1U patent/CN208564969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111365236A (en) * | 2020-03-27 | 2020-07-03 | 宁波英德菲尔机械科技有限公司 | Dry screw compressor |
| CN111365236B (en) * | 2020-03-27 | 2020-12-11 | 宁波英德菲尔机械科技有限公司 | Dry screw compressor |
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