CN204402894U - A kind of vacuum pump with self-protection function - Google Patents
A kind of vacuum pump with self-protection function Download PDFInfo
- Publication number
- CN204402894U CN204402894U CN201420765075.4U CN201420765075U CN204402894U CN 204402894 U CN204402894 U CN 204402894U CN 201420765075 U CN201420765075 U CN 201420765075U CN 204402894 U CN204402894 U CN 204402894U
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- CN
- China
- Prior art keywords
- pump housing
- pump
- self
- rotating shaft
- vacuum pump
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- 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 kind of vacuum pump with self-protection function, comprise the pump housing, rotating shaft is provided with in the described pump housing, turbo type Pumping mechanism, molecule drawing pump Pu mechanism and rotary drive mechanism, described rotary drive mechanism comprises stators and rotators, described rotor is positioned at stator, one end of described rotor is connected with the pump housing by bearing, the other end of described rotor is fixedly connected with rotating shaft, the other end of described rotating shaft is also connected with the pump housing by bearing, described turbo type Pumping mechanism and molecule drawing pump Pu mechanism are arranged in rotating shaft successively, also pressure protective device is provided with in the described pump housing.The design makes vacuum pump have the function of self-protection, causes the damage of self structure after preventing it to be subject to excessive pressure.
Description
Technical field
The utility model relates to a kind of vacuum pump, particularly a kind of vacuum pump with self-protection function.
Background technique
Vacuum pump is a kind of rotary positive-displacement vacuum pump, fore pump must be had to coordinate, can be used in wider pressure range, have larger pumping speed, to extracted in gas containing dust and water vapor insensitive, be widely used in the industries such as metallurgy, chemical industry, food, electronics plated film.But nowadays vacuum pump on the market does not possess the function of self-protection, once its pressure born is excessive be easy to the damage causing self structure, so design a kind of vacuum pump with self-protection function just seem particularly important.
Summary of the invention
The utility model technical issues that need to address are the functions making vacuum pump have self-protection, cause the damage of self structure after preventing it to be subject to excessive pressure; A kind of vacuum pump with self-protection function is provided.
For solving above-mentioned technical problem, structure of the present utility model comprises the pump housing, rotating shaft is provided with in the described pump housing, turbo type Pumping mechanism, molecule drawing pump Pu mechanism and rotary drive mechanism, described rotary drive mechanism comprises stators and rotators, described rotor is positioned at stator, one end of described rotor is connected with the pump housing by bearing, the other end of described rotor is fixedly connected with rotating shaft, the other end of described rotating shaft is also connected with the pump housing by bearing, described turbo type Pumping mechanism and molecule drawing pump Pu mechanism are arranged in rotating shaft successively, also pressure protective device is provided with in the described pump housing.
Further: described pressure protective device comprises valve cylinder, spool, spring and valve gap, the described spool being positioned at valve cylinder is connected with valve gap by spring, and described valve gap offers leak holes.
Further again: described valve cylinder connects to form by about arc inner wall formula valve cylinder and straight line type inner wall type valve cylinder.
Further again: the outside of the described pump housing is provided with silencing pad.
After adopting said structure, the utility model can not only make vacuum pump have the function of self-protection, causes the damage of self structure after preventing it to be subject to excessive pressure; And it also has the function of sound-insulation noise, prevent the noise produced during work from causing harmful effect to surrounding environment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of pressure protective device.
Embodiment
A kind of vacuum pump with self-protection function as shown in Figure 1, comprise the pump housing 1, rotating shaft 3 is provided with in the described pump housing 1, turbo type Pumping mechanism 4, molecule drawing pump Pu mechanism 5 and rotary drive mechanism, described rotary drive mechanism comprises stator 7 and rotor 6, described rotor 6 is positioned at stator 7, one end of described rotor 6 is connected with the pump housing 1 by bearing 8, the other end of described rotor 6 is fixedly connected with rotating shaft 3, the other end of described rotating shaft 3 is also connected with the pump housing 1 by bearing 8, described turbo type Pumping mechanism 4 and molecule drawing pump Pu mechanism 5 are arranged in rotating shaft 3 successively, pressure protective device 9 is also provided with in the described pump housing 1.During work, it is made to produce magnetic field by giving stator 7 energising, thus rotor is rotated under the influence of a magnetic field, because rotor 6 is fixedly connected with rotating shaft 3, together rotate so also can follow at the process shaft 3 of rotor 6 rotation, together rotated with turbo type Pumping mechanism 4 and molecule drawing pump Pu mechanism 5 by rotating shaft 3, utilize turbo type Pumping mechanism 4 and molecule drawing pump Pu mechanism 5 to vacuumize.When vacuum pump is subject to excessive pressure, pressure protective device 9 will start voluntarily and carry out pressure release, thus plays the effect of self-protection.
Pressure protective device 9 as shown in Figure 2 comprises valve cylinder, spool 13, spring 14 and valve gap 12, and the described spool 13 being positioned at valve cylinder is connected with valve gap 12 by spring 14, and described valve gap 12 offers leak holes 15.Described valve cylinder is connected to form by arc inner wall formula valve cylinder 11 and straight line type inner wall type valve cylinder about 10.When vacuum pump is subject to excessive pressure, air pressure will push spool 13 and move to arc inner wall formula valve cylinder 11 from straight line type inner wall type valve cylinder 10, when spool 13 moves in arc inner wall formula valve cylinder 11, unnecessary air pressure will be run out of from the gap between the inwall of arc inner wall formula valve cylinder 11 and spool 13, thus plays the effect reducing pressure.
The outside of the pump housing 1 is as shown in Figure 1 provided with silencing pad 2.The design also has the function of sound-insulation noise, prevents the noise produced during work from causing harmful effect to surrounding environment; And it also has the advantage that structure is simple, be easy to manufacture and practicality and high efficiency.
Claims (4)
1. one kind has the vacuum pump of self-protection function, comprise the pump housing (1), it is characterized in that: in the described pump housing (1), be provided with rotating shaft (3), turbo type Pumping mechanism (4), molecule drawing pump Pu mechanism (5) and rotary drive mechanism, described rotary drive mechanism comprises stator (7) and rotor (6), described rotor (6) is positioned at stator (7), one end of described rotor (6) is connected with the pump housing (1) by bearing (8), the other end of described rotor (6) is fixedly connected with rotating shaft (3), the other end of described rotating shaft (3) is also connected with the pump housing (1) by bearing (8), described turbo type Pumping mechanism (4) and molecule drawing pump Pu mechanism (5) are arranged in rotating shaft (3) successively, pressure protective device (9) is also provided with in the described pump housing (1).
2. a kind of vacuum pump with self-protection function according to claim 1; it is characterized in that: described pressure protective device (9) comprises valve cylinder, spool (13), spring (14) and valve gap (12); the described spool (13) being positioned at valve cylinder is connected with valve gap (12) by spring (14), and described valve gap (12) offers leak holes (15).
3. a kind of vacuum pump with self-protection function according to claim 2, is characterized in that: described valve cylinder is connected to form by arc inner wall formula valve cylinder (11) and straight line type inner wall type valve cylinder (10) left and right.
4. a kind of vacuum pump with self-protection function according to claim 1, is characterized in that: the outside of the described pump housing (1) is provided with silencing pad (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765075.4U CN204402894U (en) | 2014-12-08 | 2014-12-08 | A kind of vacuum pump with self-protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420765075.4U CN204402894U (en) | 2014-12-08 | 2014-12-08 | A kind of vacuum pump with self-protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402894U true CN204402894U (en) | 2015-06-17 |
Family
ID=53426760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420765075.4U Expired - Fee Related CN204402894U (en) | 2014-12-08 | 2014-12-08 | A kind of vacuum pump with self-protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402894U (en) |
-
2014
- 2014-12-08 CN CN201420765075.4U patent/CN204402894U/en not_active Expired - Fee Related
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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: 20150617 Termination date: 20151208 |
|
| EXPY | Termination of patent right or utility model |