CN213511194U - Nitrogen sealing dry screw vacuum pump - Google Patents
Nitrogen sealing dry screw vacuum pump Download PDFInfo
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- CN213511194U CN213511194U CN202021958108.9U CN202021958108U CN213511194U CN 213511194 U CN213511194 U CN 213511194U CN 202021958108 U CN202021958108 U CN 202021958108U CN 213511194 U CN213511194 U CN 213511194U
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- vacuum pump
- nitrogen gas
- pump body
- screw rod
- nitrogen
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Abstract
The utility model discloses a nitrogen gas seals dry-type screw vacuum pump, including the vacuum pump body, nitrogen gas jar and motor, there is the sealed chamber of nitrogen gas vacuum pump body one side through bolted connection, the sealed chamber upper end of nitrogen gas is connected with the trachea through the ferrule, there is the pressure valve through threaded connection on the trachea, the trachea other end is connected with through the ferrule the nitrogen gas jar, the vacuum pump body is kept away from there is the motor through bolted connection nitrogen gas sealed chamber one side, the internal rotation of vacuum pump is connected with screw rod one, screw rod one side is rotated and is connected with screw rod two, screw rod one with the motor passes through the key-type connection. Has the advantages that: the utility model discloses a set up nitrogen gas jar, trachea, pressure valve and nitrogen gas seal chamber, can fill into nitrogen gas to the vacuum pump is internal to seal the protection through the nitrogen gas seal chamber to the screw rod vacuum pump, can replace mechanical seal, excellent in use effect reduces cost of maintenance, improves the result of use.
Description
Technical Field
The utility model relates to a screw vacuum pump technical field, concretely relates to dry-type screw vacuum pump is sealed to nitrogen gas.
Background
The screw vacuum pump is an air pumping device which utilizes a pair of screws to synchronously rotate in a high speed and reverse direction in a pump shell to generate air suction and exhaust functions, is a renewal product of an oil seal type vacuum pump, can pump out gas occasions containing a large amount of water vapor and a small amount of dust, and is widely applied to the fields of enterprises with higher requirements on clean vacuum, such as domestic pharmacy, chemical industry, semiconductors and the like.
The existing screw vacuum pump is mostly sealed by adopting a mechanical sealing device, the mechanical sealing device is easy to wear in the using process, the service life is limited, the maintenance is better frequently needed, the use cost is high, the existing screw vacuum pump can generate larger vibration during working, larger noise is easy to generate, and the using effect of the device is influenced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to overcome prior art not enough, present a nitrogen gas seal dry-type screw vacuum pump, solved current screw vacuum pump and adopted mechanical seal device to seal mostly, and easy wearing and tearing in the mechanical seal device use, life is limited, need often maintain better, problem that use cost is high.
(II) technical scheme
The utility model discloses a following technical scheme realizes: the utility model provides a nitrogen gas seals dry-type screw vacuum pump, including the vacuum pump body, nitrogen gas jar and motor, there is the sealed chamber of nitrogen gas vacuum pump body one side through bolted connection, the sealed chamber upper end of nitrogen gas is connected with the trachea through the ferrule, there is the pressure valve through threaded connection on the trachea, the trachea other end is connected with through the ferrule the nitrogen gas jar, the vacuum pump body is kept away from there is the motor through bolted connection nitrogen gas sealed chamber one side, the internal rotation of vacuum pump is connected with screw rod one, screw rod one side is rotated and is connected with screw rod two, screw rod one with the motor passes through the key-type connection.
Further, an air inlet is formed at the upper end of the vacuum pump body, and an air outlet is formed at one side of the vacuum pump body adjacent to the air inlet.
Through adopting above-mentioned technical scheme, the motor can give the vacuum pump body provides power, guarantees the normal work of the vacuum pump body, screw rod one with screw rod two can rotate relatively, thereby make the inside negative pressure state that is of the vacuum pump body, thereby pass through the air inlet inhaled air, and pass through the gas outlet is discharged, thereby realizes bleeding and exhaust function, nitrogen gas can be stored to the nitrogen gas jar, through pressure valve control tracheal circulation, thereby make nitrogen gas pass through the trachea gets into in the nitrogen gas seals the chamber, thereby can be right the vacuum pump body carries out nitrogen gas and seals, replaces mechanical seal, excellent in use effect reduces cost of maintenance, improves the result of use.
Furthermore, the air inlet with all be provided with the muffler in the air outlet, the muffler with the vacuum pump body passes through the screw connection.
By adopting the technical scheme, noise generated in the air exhaust process can be eliminated, and the silent property of the device work is ensured.
Furthermore, the bottom end of the vacuum pump body is connected with a damping plate through a bolt, and the bottom end of the damping plate is connected with a base through a bolt.
Through adopting above-mentioned technical scheme, can give the vacuum pump body provides stable support, simultaneously the shock attenuation board can slow down the vibrations that screw vacuum pump during operation produced, reduces noise at work, improves the result of use.
Furthermore, both sides of the bottom end of the base are connected with supporting legs through bolts.
Through adopting above-mentioned technical scheme, can for the base provides stable support.
(III) advantageous effects
Compared with the prior art, the utility model, following beneficial effect has:
1. in order to solve the problems that most of the existing screw vacuum pumps are sealed by adopting a mechanical sealing device, the mechanical sealing device is easy to wear in the using process, the service life is limited, the maintenance is better and the use cost is high, the nitrogen can be filled into the vacuum pump body by arranging a nitrogen tank, an air pipe, a pressure valve and a nitrogen sealing cavity, so that the screw vacuum pump can be sealed and protected by the nitrogen sealing cavity, the mechanical sealing can be replaced, the use effect is good, the maintenance cost is reduced, and the use effect is improved;
2. for solving current screw vacuum pump can produce great vibrations at the during operation, produce great noise easily, influence the result of use's of device problem, the utility model discloses a set up the shock attenuation board, can slow down the vibrations that screw vacuum pump during operation produced, reduce noise at work, improve the result of use.
Drawings
FIG. 1 is a front view of a nitrogen sealed dry screw vacuum pump according to the present invention;
FIG. 2 is a main sectional view of a nitrogen sealed dry screw vacuum pump according to the present invention;
fig. 3 is a top view of the nitrogen sealed dry screw vacuum pump of the present invention.
The reference numerals are explained below:
1. a motor; 2. a vacuum pump body; 3. an air inlet; 4. an air outlet; 5. an air tube; 6. a pressure valve; 7. a nitrogen tank; 8. sealing the cavity by nitrogen; 9. a base; 10. supporting legs; 11. a damper plate; 12. a first screw rod; 13. a second screw; 14. a silencer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-3, the nitrogen sealing dry screw vacuum pump in this embodiment includes a vacuum pump body 2, a nitrogen tank 7 and a motor 1, one side of the vacuum pump body 2 is connected with a nitrogen sealing cavity 8 through a bolt, the upper end of the nitrogen sealing cavity 8 is connected with an air pipe 5 through a pipe hoop, the air pipe 5 is connected with a pressure valve 6 through a thread, the other end of the air pipe 5 is connected with the nitrogen tank 7 through the pipe hoop, one side of the vacuum pump body 2, far away from the nitrogen sealing cavity 8, is connected with the motor 1 through a bolt, a first screw 12 is rotatably connected in the vacuum pump body 2, one side of the first screw 12 is rotatably connected with a second screw 13, the first screw 12 is connected with the motor 1 through a key, an air inlet 3 is formed at the upper end of the vacuum pump body 2, an air outlet 4 is formed at one side of, screw rod 12 and screw rod two 13 can rotate relatively, thereby make the inside negative pressure state that is of vacuum pump body 2, thereby inhale the air through air inlet 3, and discharge through gas outlet 4, thereby realize bleeding and exhaust function, nitrogen gas can be stored to nitrogen gas jar 7, circulation through pressure valve 6 control trachea 5, thereby make nitrogen gas pass through trachea 5 and get into in the nitrogen gas seal chamber 8, thereby can carry out nitrogen gas seal to vacuum pump body 2, replace mechanical seal, excellent in use effect, and the maintenance cost is reduced, and the use effect is improved.
As shown in fig. 1-3, in the present embodiment, silencers 14 are disposed in both the air inlet 3 and the air outlet 4, and the silencers 14 are connected to the vacuum pump body 2 by screws, so as to eliminate noise generated during air suction and exhaust, and ensure silent operation of the device.
As shown in fig. 1-3, in this embodiment, the bottom end of the vacuum pump body 2 is connected with a damping plate 11 through a bolt, the bottom end of the damping plate 11 is connected with a base 9 through a bolt, so as to provide stable support for the vacuum pump body 2, meanwhile, the damping plate 11 can slow down the vibration generated during the operation of the screw vacuum pump, reduce the working noise and improve the use effect, and the two sides of the bottom end of the base 9 are connected with supporting legs 10 through bolts, so as to provide stable support for the base 9.
The specific implementation process of this embodiment is as follows: when in use, the motor 1 can provide power for the vacuum pump body 2, ensure the normal work of the vacuum pump body 2, enable the screw rod one 12 and the screw rod two 13 to rotate relatively, thereby enabling the inside of the vacuum pump body 2 to be in a negative pressure state, enabling air to enter the vacuum pump body 2 through the air inlet 3 and then to be discharged through the air outlet 4, thereby realizing the functions of air suction and exhaust, the nitrogen tank 7 can store nitrogen, and control the circulation of the air pipe 5 through the pressure valve 6, thereby enabling the nitrogen to enter the nitrogen sealing cavity 8 through the air pipe 5, carrying out nitrogen sealing on the vacuum pump body 2, replacing mechanical sealing, the using effect is good, the maintenance cost is reduced, the using effect is improved, the silencers 14 are arranged in the air inlet 3 and the air outlet 4, the noise generated in the air suction and exhaust processes can be eliminated, the silent operation of the device is ensured, the vibration generated during the work of the screw, reduce the working noise and improve the use effect.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (5)
1. The utility model provides a nitrogen gas seals dry-type screw vacuum pump which characterized in that: including the vacuum pump body (2), nitrogen gas jar (7) and motor (1), there is nitrogen gas sealed chamber (8) vacuum pump body (2) one side through bolted connection, nitrogen gas sealed chamber (8) upper end is connected with trachea (5) through the ferrule, there is pressure valve (6) through threaded connection on trachea (5), trachea (5) other end is connected with through the ferrule nitrogen gas jar (7), the vacuum pump body (2) are kept away from there is motor (1) nitrogen gas sealed chamber (8) one side through bolted connection, the internal rotation of the vacuum pump body (2) is connected with screw rod (12), screw rod (12) one side is rotated and is connected with screw rod two (13), screw rod (12) with motor (1) is through the key-type connection.
2. A nitrogen sealed dry screw vacuum pump as claimed in claim 1, wherein: the vacuum pump body (2) upper end shaping has air inlet (3), the vacuum pump body (2) with one side shaping that air inlet (3) are adjacent has gas outlet (4).
3. A nitrogen sealed dry screw vacuum pump as claimed in claim 2, wherein: the air inlet (3) and the air outlet (4) are internally provided with silencers (14), and the silencers (14) are connected with the vacuum pump body (2) through screws.
4. A nitrogen sealed dry screw vacuum pump as claimed in claim 1, wherein: the vacuum pump body (2) bottom has shock attenuation board (11) through bolted connection, shock attenuation board (11) bottom has base (9) through bolted connection.
5. A nitrogen sealed dry screw vacuum pump as claimed in claim 4, wherein: and supporting legs (10) are connected to the two sides of the bottom end of the base (9) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021958108.9U CN213511194U (en) | 2020-09-09 | 2020-09-09 | Nitrogen sealing dry screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021958108.9U CN213511194U (en) | 2020-09-09 | 2020-09-09 | Nitrogen sealing dry screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511194U true CN213511194U (en) | 2021-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021958108.9U Active CN213511194U (en) | 2020-09-09 | 2020-09-09 | Nitrogen sealing dry screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511194U (en) |
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2020
- 2020-09-09 CN CN202021958108.9U patent/CN213511194U/en active Active
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