CN210509591U - Rotary vane vacuum pump - Google Patents
Rotary vane vacuum pump Download PDFInfo
- Publication number
- CN210509591U CN210509591U CN201921268770.9U CN201921268770U CN210509591U CN 210509591 U CN210509591 U CN 210509591U CN 201921268770 U CN201921268770 U CN 201921268770U CN 210509591 U CN210509591 U CN 210509591U
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- China
- Prior art keywords
- oil
- detection device
- pump
- permanent magnet
- vacuum pump
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- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 239000003086 colorant Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses a rotary vane vacuum pump, including the motor and the pump body, be provided with heat dissipation chamber and oil pocket in the pump body, the output shaft of motor crosses behind the heat dissipation chamber and the oil pump connection of oil intracavity, be provided with radiator vane on the output shaft of motor, be connected with the cooling tube of arranging the heat dissipation intracavity in between the oil inlet of oil pump and the oil-out, be provided with oil level detection device in the oil pocket, oil level detection device is including establishing the guide slot on the oil pocket chamber wall, arranging the annular permanent magnet float in the guide slot in, arranging the detection device that the highest oil level and minimum oil level detected permanent magnet float magnetic field respectively in, the last warning circuit that is connected with of detection device. The oil level detection device is arranged in the oil cavity, the permanent magnet floater is suspended on the liquid level through the buoyancy of oil, the liquid level is detected through detecting the position of the permanent magnet floater, the oil filling and oil reducing prompts are realized through the alarm circuit, and the loss caused by human negligence is avoided.
Description
Technical Field
The utility model relates to a pump unit field, more specifically the utility model relates to a sliding vane rotary vacuum pump that says so.
Background
The rotary vane vacuum pump has one rotor installed eccentrically inside the pump body, the outer circle of the rotor is tangent to the inner surface of the pump body, and two rotary vanes with spring inside the rotor slot. The pump cavity of the existing vane-rotating needle vacuum pump needs to keep a certain amount of oil, and the oil level is too low to perform an oil sealing function on an exhaust valve; the oil level is too high, which easily causes too much oil return when the pump is stopped. In order to facilitate the monitoring of the oil quantity in the pump cavity, the conventional vertical strip-shaped observation window is generally adopted for manual observation. In actual operation, if the user cares or forgets to observe the oil, the oil amount is extremely low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem and provide a sliding vane rotary vacuum pump.
The utility model discloses a following technical scheme realizes:
the utility model provides a rotary vane vacuum pump, includes the motor and the pump body, be provided with heat dissipation chamber and oil pocket in the pump body, the output shaft of motor crosses behind the heat dissipation chamber and is connected with the oil pump in the oil pocket, be provided with radiator vane on the output shaft of motor, be connected with the cooling tube of arranging the heat dissipation intracavity in between the oil inlet of oil pump and the oil-out, be provided with oil level detection device in the oil pocket, oil level detection device is including establishing the guide slot on the oil pocket wall, arranging the annular permanent magnet float in the guide slot in, arranging the detection device that the magnetic field of highest oil level and minimum oil level detection permanent magnet float in respectively, the last warning. The pump body of this scheme includes two cavitys, heat dissipation chamber and oil pocket, and the heat dissipation intracavity is arranged in to the cooling tube, and in the oil pump carried the cooling tube in heat dissipation chamber with the oil in the oil pocket, drive the blade rotation under the motor rotation and reach the cooling effect, the oil after the cooling can get back to in the oil pocket once more. The air cooling mode is adopted, the blades are connected to the output shaft of the motor, no power source is additionally added, and energy is saved. An oil level detection device is arranged in the oil cavity, the permanent magnet floater is suspended on the liquid level through the buoyancy pair of oil, and the liquid level is detected through detecting the position of the permanent magnet floater. The guide slot carries on spacingly to the shift position of permanent magnet float, realizes the detection of liquid level through the magnetic field that detects the permanent magnet float, realizes refueling and the suggestion of subtracting oil through warning circuit, avoids the loss that the artificial carelessness caused.
Preferably, the radiating pipe is S-shaped in order to improve stability of the radiating pipe. Present cooling tube becomes many rings of loop configuration, and the both ends of cooling tube are located the intra-annular respectively and outside the ring, for the convenience of being connected with the oil pump, need set up the connecting tube, and the cooling tube is whole just not on same horizontal plane, and the stability of cooling tube receives the influence. This scheme sets up it into the S type, and the drawing forth of the both ends connector of being convenient for can guarantee that the cooling tube is whole to be in on same horizontal plane, improves its stability.
Preferably, in order to further enhance the emission performance, the outer surface of the pump body is provided with heat dissipation ribs.
Preferably, in order to facilitate the control of the oil filling operation, an observation window is arranged on the side wall of the oil cavity, and a maximum oil level prompt line and a minimum oil level prompt line are arranged on the observation window.
Preferably, in order to simplify the structure of the device and facilitate maintenance, the guide groove is a cylinder with a drainage port on the side wall along the diameter direction, the permanent magnet floater comprises a cylindrical floating body and a permanent magnet arranged in an annular groove of the floating body, the detection device comprises a Hall switch, an analog-to-digital converter and a control circuit which are electrically connected in sequence, and the alarm circuit is connected to the control circuit. The permanent magnet is arranged in the oil cavity, does not need to be changed and overhauls, and outside the oil cavity was arranged in to detection device, when needing to overhaul, direct dismantlement can, it is very convenient, do not need dismouting oil pump body.
Furthermore, in order to facilitate the alarm of the highest oil level and the lowest oil level, the alarm circuit is an acousto-optic alarm circuit, and the two alarm circuits are different in light emitting color.
Preferably, in order to facilitate the maintenance of the pump body, the two ends of the radiating pipe are connected with the oil pump through detachable connecting pipes.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model discloses set up oil level detection device in the oil pocket, the buoyancy through oil is to suspending permanent magnet float on the liquid level, reaches the detection to the liquid level through the position that detects permanent magnet float, realizes refueling and the suggestion of subtracting oil through warning circuit, avoids the loss that the human negligence caused.
2. The air cooling mode is adopted, the blades are connected to the output shaft of the motor, no power source is additionally added, and energy is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the pump body of the present invention.
Fig. 3 is a plan view of the oil level detection device.
Fig. 4 is a schematic structural diagram of a heat dissipation pipe.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
A rotary vane vacuum pump as shown in fig. 1, which comprises a motor 1 and a pump body 2, wherein a heat dissipation cavity 21 and an oil cavity 22 are arranged in the pump body 2, an output shaft 11 of the motor 1 traverses the heat dissipation cavity 21 and then is connected with an oil pump 4 in the oil cavity 22, a heat dissipation blade 3 is arranged on the output shaft 11 of the motor 1, a heat dissipation pipe 5 arranged in the heat dissipation cavity 21 is connected between an oil inlet and an oil outlet of the oil pump 4, an oil level detection device is arranged in the oil cavity 22, the oil level detection device comprises a guide groove 51 arranged on the wall of the oil cavity 22, an annular permanent magnet float arranged in the guide groove 51, and a detection device 52 respectively arranged at the highest oil level and the lowest oil level to detect the.
Specifically, the oil pump 4 may adopt an existing structure, that is, a structure including a rotor, a stator, a spring, and the like, which is an existing conventional structure and is not described herein again. The radiating pipe 5 is S-shaped and comprises straight pipe sections arranged in parallel and arc sections connecting two adjacent straight pipe sections, as shown in fig. 4. The two ends of the radiating pipe 5 are connected with the oil pump 4 through detachable connecting pipes.
As shown in fig. 1, the outer surface of the pump body 2 is provided with a plurality of heat dissipation ribs 23. An observation window 24 is arranged on the side wall of the oil chamber 22, and a maximum oil level prompt line and a minimum oil level prompt line are arranged on the observation window 24.
Example 2
Based on the principle of the above embodiment, the embodiment discloses a specific implementation manner, that is, the guide groove 51 is a cylinder with a drainage port on the side wall along the diameter direction, the inner cavity of the cylinder forms a guide groove structure, and the drainage port ensures the communication between the guide groove and the oil chamber. The permanent magnet float comprises a cylindrical floating body 53 and a permanent magnet 54 arranged in an annular groove of the floating body 53, and the floating body 53 can be made of foam and the like. The permanent magnet is annular and can form a magnetic field around. The detection device 52 includes a hall switch, an analog-to-digital converter and a control circuit which are electrically connected in sequence, the alarm circuit is connected to the control circuit, the alarm circuit is an acousto-optic alarm circuit, and the two alarm circuits have two paths and the light emitting colors of the two paths of alarm circuits are different. When the permanent magnet reaches the lowest liquid level or the highest liquid level along with the liquid level, the Hall switch generates state jump, the converter sends jump information to the control circuit, and the control circuit controls the corresponding alarm circuit to alarm according to the signal so as to realize liquid level monitoring. The circuit connection relationship among the hall switch, the analog-to-digital converter and the control circuit can adopt the existing conventional circuit, and the details are not repeated herein.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A rotary vane vacuum pump is characterized by comprising a motor (1) and a pump body (2), a heat dissipation cavity (21) and an oil cavity (22) are arranged in the pump body (2), an output shaft (11) of the motor (1) traverses the heat dissipation cavity (21) and then is connected with an oil pump (4) in the oil cavity (22), an output shaft (11) of the motor (1) is provided with a radiating blade (3), a radiating pipe (5) arranged in a radiating cavity (21) is connected between an oil inlet and an oil outlet of the oil pump (4), the oil level detection device is arranged in the oil cavity (22) and comprises a guide groove (51) formed in the wall of the oil cavity (22), an annular permanent magnet floater arranged in the guide groove (51) and a detection device (52) which is respectively arranged at the highest oil level and the lowest oil level and detects the magnetic field of the permanent magnet floater, and an alarm circuit is connected to the detection device (52).
2. A rotary vane vacuum pump as claimed in claim 1, wherein said heat radiating pipe (5) is S-shaped.
3. A rotary vane vacuum pump according to claim 1, characterized in that the outer surface of the pump body (2) is provided with heat dissipating ribs (23).
4. A rotary vane vacuum pump as claimed in claim 1, characterized in that a viewing window (24) is provided on a side wall of said oil chamber (22), said viewing window (24) being provided with a maximum oil level indication line and a minimum oil level indication line.
5. A rotary vane vacuum pump according to claim 1, characterized in that the guide groove (51) is a cylinder with a drainage port on the side wall along the diameter direction, the permanent magnet float comprises a cylindrical floating body (53), a permanent magnet (54) arranged in the annular groove of the floating body (53), the detection device (52) comprises a hall switch, an analog-to-digital converter and a control circuit which are electrically connected in sequence, and the alarm circuit is connected to the control circuit.
6. A rotary vane vacuum pump as claimed in claim 5, wherein the alarm circuit is an acousto-optic alarm circuit, and the two alarm circuits have different light colors.
7. A rotary vane vacuum pump as claimed in claim 1, wherein both ends of said heat radiating pipe (5) are connected with the oil pump (4) through detachable connection pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268770.9U CN210509591U (en) | 2019-08-07 | 2019-08-07 | Rotary vane vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921268770.9U CN210509591U (en) | 2019-08-07 | 2019-08-07 | Rotary vane vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210509591U true CN210509591U (en) | 2020-05-12 |
Family
ID=70588108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921268770.9U Expired - Fee Related CN210509591U (en) | 2019-08-07 | 2019-08-07 | Rotary vane vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210509591U (en) |
-
2019
- 2019-08-07 CN CN201921268770.9U patent/CN210509591U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |