CN105298847A - Cooling device for rotor of screw vacuum pump - Google Patents
Cooling device for rotor of screw vacuum pump Download PDFInfo
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- CN105298847A CN105298847A CN201510804812.6A CN201510804812A CN105298847A CN 105298847 A CN105298847 A CN 105298847A CN 201510804812 A CN201510804812 A CN 201510804812A CN 105298847 A CN105298847 A CN 105298847A
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- heat pipe
- vacuum pump
- screw
- cooling
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Abstract
The invention relates to a cooling device for a rotor of a screw vacuum pump. The cooling device comprises a rotary heat pipe. A sealed vacuum pipe serves as the rotary heat pipe. The rotary heat pipe is filled with work media. A cooling chamber is arranged on the end face of one side of the screw vacuum pump perpendicular to the axial direction of the screw rotor. Cooling media are arranged in the cooling chamber. A shaft hole extending in the axial direction of the screw rotor is formed in the end face, close to the cooling chamber, of the screw rotor. The rotary heat pipe is arranged in the shaft hole. One end of the rotary heat pipe stretches out of the shaft hole and extends into the cooling chamber. The cooling effect of the cooling device on the screw rotor is good. The phenomenon of deformation and clamping caused by high temperature to the rotor is avoided, and the service life is prolonged. Heat deformation of the rotor is small, a fit clearance of a driving rotor and a driven rotor can be arranged reasonably, the effective pumping speed and the vacuum degree of the vacuum pump are increased, and the aim of energy saving is achieved. The rotary heat pipe is easy and convenient to manufacture, low in cost, easy to mount, high in delivery efficiency and easy to seal and operate.
Description
Technical field
The present invention relates to screw vacuum pump refrigerating device, specifically screw vacuum pump rotor cooling unit.
Background technique
At present, dry screw vacuum pump be market more and more higher to clean vacuum environmental requirement when the optimal vacuum products that occurs.Its employing is intermeshed for a pair and discontiguous screw rotor is rotated by gear transmission, realizes object of bleeding.Its structure is simple, pumping performance is excellent, can discharging directly into atmosphere pumping process be clean thus enjoys great popularity without oil pollution.But China is at present by the restriction of material and level of processing, and the overall performance of pump significantly reduces, so the main dependence on import of this product at present.
Although screw pump has possessed lot of advantages, the difficult problem that the cooling of pump is still larger at present, has generally adopted jacket cooling pump shell to reduce vacuum pump temperature now, cannot cooling screw rotor.Such screw rotor can produce thermal accumlation in running, causes screw rotor to be out of shape because temperature is high, so direct performance and used life affecting screw vacuum pump.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of to rotor good cooling effect, ensures the stable performance of rotor and the screw vacuum pump rotor cooling unit of long service life.
For solving the problems of the technologies described above, technological scheme of the present invention is: screw vacuum pump rotor cooling unit, comprises the screw rotor be arranged in screw vacuum pump, comprise rotating heat pipe, and described rotating heat pipe is the vacuum tube of sealing, is filled with working medium in described rotating heat pipe; A side end face perpendicular to the screw vacuum pump of described screw rotor axis is provided with cooling chamber, is provided with cooling medium in described cooling chamber; The end face that described screw rotor closes on described cooling chamber is provided with along its axially extended axis hole, and described rotating heat pipe is installed in described axis hole, and described rotating heat pipe one end is stretched out described axis hole and extended in described cooling chamber.
As preferred technological scheme, described working medium is made up of following parts by weight of component: 3 parts of potassium permanganate, 2 parts of potassium sulfates, 95 parts of distilled water.
As preferred technological scheme, described working medium is made up of following parts by weight of component: 3 parts of potassium permanganate, 2 parts of potassium sulfates, 95 parts of distilled water, 10 parts of ethanol.
As preferred technological scheme, the degree of vacuum of described rotating heat pipe is 0.0005 handkerchief-0.005 handkerchief.
As preferred technological scheme, described rotating heat pipe extends along the whole length direction of described rotor.
As preferred technological scheme, described rotating heat pipe is positioned at described cooling chamber one end and is provided with several radiating fin.
As preferred technological scheme, the inwall of described rotating heat pipe is provided with spiral chute.
As preferred technological scheme, described screw vacuum pump is provided with pump case cooling unit, described pump case cooling unit comprises and is positioned at water jacket on pump case body and fin, also comprises the water jacket on the end cap being positioned at described pump case body two ends, is provided with oil cooling room outside described end cap
Be filled with working medium in rotating heat pipe of the present invention, realized the heat exchange of screw rotor heat affected zone and cooled region by working medium, to the good cooling results of screw rotor; The temperature of screw rotor is effectively controlled and maintains in rational scope.Therefore overcome rotor and produce distortion stuck phenomenon because temperature is high, improve working life; In addition, because the thermal distortion of rotor is little, be conducive to the matching gap that power rotor and driven rotor are rationally set, improve vacuum pump effective pumping speed and degree of vacuum, reach energy-conservation object.Rotor surface temperature reduces, and the effective screw pump that solves, in the problem of pumping the medium fixed line carbon distribution produced in procedures of turn-off, greatly improves the operating life of rotor.The present invention is equally applicable to the rotor cooling of Roots pump, air-cooled roots vacuum pump and motor, reaches energy-conservation object.Rotating heat pipe have manufacture easy, cost is low, easy installation, transmission efficiency are high, seal the features such as simple to operation, manufacture and user cost low.
Owing to have employed technique scheme, good cooling results of the present invention, the simple and low cost of manufacture of structure; Easy to use, applied widely.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention;
In figure: 1-oil cooling room, 2-driven gear, 3-power rotor, 4-driving gear, 5-end cap, 6-water jacket, the 7-pump housing, 8-axis hole, 9-radiating fin, 10-rotating heat pipe, 11-radiating fin, 12-cooling medium, 13-cooling chamber, 14-driven rotor.
Embodiment
As shown in Figure 1, screw vacuum pump comprises the screw rotor be installed in the pump housing 7, and screw rotor comprises intermeshing power rotor 3 and driven rotor 14, power rotor 3 external connection power device.The mounting end of power rotor is fixed with driving gear 4, and the mounting end of driven rotor is provided with driven gear 2, and driving gear 4 and driven gear 2 engage each other.When external connection power device drives power rotor 3, the driving gear 4 that power process is meshed and driven gear 2 drive driven rotor 14, and dynamic rotor 3 rotates together with driven rotor 14.The pump case cooling unit of screw vacuum pump comprises the water jacket 6 be arranged on the pump housing 7 and end cap 5 and the oil cooling room 1 be arranged on outside end cap 5, and the machine oil in oil cooling room 1 plays the effect of lubrication, cooling to rotor.In order to strengthen radiating effect, the outside of the pump housing 7 is provided with radiating fin 9.Pump case cooling unit is lowered the temperature to pump case, indirectly reduces the temperature in pump case, is beneficial to reduction temperature of rotor.
Screw vacuum pump rotor cooling unit, comprises rotating heat pipe 10, and described rotating heat pipe 10 is the vacuum tube of sealing, is filled with working medium in described rotating heat pipe 10.The parts by weight of component of working medium is: 3 parts of potassium permanganate, 2 parts of potassium sulfates, 95 parts of distilled water.The side of the screw vacuum pump perpendicular with screw rotor bearing of trend is provided with cooling chamber 13, is provided with cooling medium 12, such as cooling water in described cooling chamber 13.One end face of described screw rotor is provided with along its axially extended axis hole 8, and described rotating heat pipe 10 is installed in described axis hole 8, and described rotating heat pipe 10 one end is stretched out described axis hole 8 and extended in described cooling chamber 13.Colling end is passed to rapidly for making screw rotor temperature, 10% ethanol is added inside working medium, rotating heat pipe 10 can be made to have less start-up temperature (about 25 °), one end that described rotating heat pipe 10 is positioned at described cooling chamber 13 is provided with several radiating fin 11, increase working medium heat diffusion area, thus effectively control screw rotor temperature.Preferably, described rotating heat pipe 10 extends along the whole length direction of described screw rotor, and the inwall of rotating heat pipe 10 is provided with spiral chute, and working medium can fast and uniformly by the heat absorption on screw rotor.
The working principle of screw vacuum pump rotor cooling unit: the working medium in rotating heat pipe 10 absorbs the heat of screw rotor at the heating section of screw rotor and gasifies, then the colling end being positioned at cooling chamber 13 is reached, gaseous working medium meets condensation knot to cooling medium 12 release heat at colling end, and then working medium flows back to heating end with liquid state by the spiral chute on the tube wall of rotating heat pipe 10 again.So just, the heat that screw rotor produces is passed to cooling water endlessly, realize rotor cooling object.
The present invention is to the good cooling results of screw rotor; Pump case cooling unit and rotating heat pipe with the use of, the temperature of screw rotor is effectively controlled and maintains in rational scope.Therefore overcome rotor and produce distortion stuck phenomenon because temperature is high, improve working life; In addition, because the thermal distortion of rotor is little, be conducive to the matching gap that power rotor and driven rotor are rationally set, improve vacuum pump effective pumping speed and degree of vacuum, reach energy-conservation object.
The cooling-down effect of domestic existing screw vacuum pump is bad, and rotor deformation is large, and rotor clearance is generally at 0.5mm, and what have is even larger.Less for the larger pumping speed in screw pump gap by gap and linear velocity fitted seal, degree of vacuum is lower.Instant invention overcomes temperature rising causes screw rotor to be out of shape, and screw rotor gap can be controlled in about 0.1mm, is conducive to improving vacuum pump effective pumping speed and degree of vacuum, reaches energy-conservation object.Rotor surface temperature reduces, and the effective screw pump that solves, in the problem of pumping the medium fixed line carbon distribution produced in procedures of turn-off, greatly improves the operating life of rotor.
The present invention is equally applicable to the rotor cooling of Roots pump, air-cooled roots vacuum pump and motor, reaches energy-conservation object.Rotating heat pipe have manufacture easy, cost is low, easy installation, transmission efficiency are high, seal the features such as simple to operation, manufacture and user cost low.
The course of working of rotating heat pipe 10 is as follows:
Step one: determine heat pipe to be heated length according to known screw rotor length of being heated, and at pipe external welding connecting thread part; The position corresponding to threaded piece position of screw rotor is provided with internal thread, and screw rotor and rotating heat pipe are threaded fixing;
Step 2: by the copper pipe of certain length and certain diameter, carry out pickling, alkali cleaning, oven dry reaches in pipe clean vacuum environment;
Step 3: with spinning machine one section sealing, the other end reducing is to vacuumizing reserved opening, and diameter is probably 8mm, facilitates sealed after being vacuumized;
Step 4: be evacuated to 0.0005 to 0.005 handkerchief, for making to reach condition of high vacuum degree in pipe, considers the venting of pipe working life, manufacture cost and tubing, 0.0005 to 0.005 handkerchief be optimal degree of vacuum thus; Noting, in order to meet intraductal working medium saturation state all the time, in pipe, must high vacuum be kept;
Step 5: sealed after being filled with a certain amount of working medium.
More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof
.
Claims (8)
1. screw vacuum pump rotor cooling unit, comprises the screw rotor be arranged in screw vacuum pump, it is characterized in that: comprise rotating heat pipe, and described rotating heat pipe is the vacuum tube of sealing, is filled with working medium in described rotating heat pipe; A side end face perpendicular to the screw vacuum pump of described screw rotor axis is provided with cooling chamber, is provided with cooling medium in described cooling chamber; The end face that described screw rotor closes on described cooling chamber is provided with along its axially extended axis hole, and described rotating heat pipe is installed in described axis hole, and described rotating heat pipe one end is stretched out described axis hole and extended in described cooling chamber.
2. screw vacuum pump refrigerating device as claimed in claim 1, is characterized in that: described working medium is made up of following parts by weight of component: 3 parts of potassium permanganate, 2 parts of potassium sulfates, 95 parts of distilled water.
3. screw vacuum pump refrigerating device as claimed in claim 1, is characterized in that: described working medium is made up of following parts by weight of component: 3 parts of potassium permanganate, 2 parts of potassium sulfates, 95 parts of distilled water, 10 parts of ethanol.
4. screw vacuum pump refrigerating device as claimed in claim 2 or claim 3, is characterized in that: the degree of vacuum of described rotating heat pipe is 0.0005 handkerchief-0.005 handkerchief.
5. screw vacuum pump rotor cooling unit as claimed in claim 4, is characterized in that: described rotating heat pipe extends along the whole length direction of described rotor.
6. screw vacuum pump rotor cooling unit as claimed in claim 4, is characterized in that: one end that described rotating heat pipe is positioned at described cooling chamber is provided with several radiating fin.
7. screw vacuum pump rotor cooling unit as claimed in claim 4, is characterized in that: the inwall of described rotating heat pipe is provided with spiral chute.
8. screw vacuum pump rotor cooling unit as claimed in claim 4, it is characterized in that: described screw vacuum pump is provided with pump case cooling unit, described pump case cooling unit comprises and is positioned at water jacket on pump case body and fin, also comprise the water jacket on the end cap being positioned at described pump case body two ends, outside described end cap, be provided with oil cooling room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510804812.6A CN105298847A (en) | 2015-11-20 | 2015-11-20 | Cooling device for rotor of screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510804812.6A CN105298847A (en) | 2015-11-20 | 2015-11-20 | Cooling device for rotor of screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105298847A true CN105298847A (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510804812.6A Pending CN105298847A (en) | 2015-11-20 | 2015-11-20 | Cooling device for rotor of screw vacuum pump |
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| Country | Link |
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| CN (1) | CN105298847A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715513A (en) * | 2016-04-07 | 2016-06-29 | 台州环球真空设备制造有限公司 | Air-cooling type vacuum pump |
| CN105840495A (en) * | 2016-05-30 | 2016-08-10 | 广东俊泰液压科技有限公司 | Gear pump with heat tube |
| CN111594439A (en) * | 2020-04-23 | 2020-08-28 | 浙江佳成机械有限公司 | Three-stage screw compressor |
| CN111677663A (en) * | 2020-06-23 | 2020-09-18 | 朱克龙 | High-pressure efficient vacuum energy-saving pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02199286A (en) * | 1989-01-27 | 1990-08-07 | Kobe Steel Ltd | Screw type pump device |
| US20010031214A1 (en) * | 2000-01-07 | 2001-10-18 | The Nash Engineering Company | Cooling gas in a rotary screw type pump |
| DE102006038419A1 (en) * | 2006-08-17 | 2008-02-21 | Busch Produktions Gmbh | Rotor cooling for dry-running twin-shaft vacuum pumps or compressors |
| CN102192151A (en) * | 2011-05-19 | 2011-09-21 | 台州市星光真空设备制造有限公司 | Inner cooled type vacuum pump |
| CN103267015A (en) * | 2013-04-03 | 2013-08-28 | 威海智德真空科技有限公司 | Heat pipe internal cooling dry type screw rods vavuum pump |
| CN205638946U (en) * | 2015-11-20 | 2016-10-12 | 卜学飞 | Screw vacuum pump rotor cooling device |
-
2015
- 2015-11-20 CN CN201510804812.6A patent/CN105298847A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02199286A (en) * | 1989-01-27 | 1990-08-07 | Kobe Steel Ltd | Screw type pump device |
| US20010031214A1 (en) * | 2000-01-07 | 2001-10-18 | The Nash Engineering Company | Cooling gas in a rotary screw type pump |
| DE102006038419A1 (en) * | 2006-08-17 | 2008-02-21 | Busch Produktions Gmbh | Rotor cooling for dry-running twin-shaft vacuum pumps or compressors |
| CN102192151A (en) * | 2011-05-19 | 2011-09-21 | 台州市星光真空设备制造有限公司 | Inner cooled type vacuum pump |
| CN103267015A (en) * | 2013-04-03 | 2013-08-28 | 威海智德真空科技有限公司 | Heat pipe internal cooling dry type screw rods vavuum pump |
| CN205638946U (en) * | 2015-11-20 | 2016-10-12 | 卜学飞 | Screw vacuum pump rotor cooling device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715513A (en) * | 2016-04-07 | 2016-06-29 | 台州环球真空设备制造有限公司 | Air-cooling type vacuum pump |
| CN105715513B (en) * | 2016-04-07 | 2017-10-24 | 台州环球真空设备制造有限公司 | Air-cooled vavuum pump |
| CN105840495A (en) * | 2016-05-30 | 2016-08-10 | 广东俊泰液压科技有限公司 | Gear pump with heat tube |
| CN111594439A (en) * | 2020-04-23 | 2020-08-28 | 浙江佳成机械有限公司 | Three-stage screw compressor |
| CN111677663A (en) * | 2020-06-23 | 2020-09-18 | 朱克龙 | High-pressure efficient vacuum energy-saving pump |
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Application publication date: 20160203 |