CN205260308U - Lobe pump - Google Patents
Lobe pump Download PDFInfo
- Publication number
- CN205260308U CN205260308U CN201521009070.XU CN201521009070U CN205260308U CN 205260308 U CN205260308 U CN 205260308U CN 201521009070 U CN201521009070 U CN 201521009070U CN 205260308 U CN205260308 U CN 205260308U
- Authority
- CN
- China
- Prior art keywords
- rotor
- main rotor
- bearing
- side cover
- gear
- Prior art date
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 abstract 4
- 239000002826 coolant Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000012809 cooling fluid Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model belongs to the technical field of the vacuum pump, refer in particular to a lobe pump, at the main rotor and from rotor both ends bearing between inboard main rotor and the side cap and from being provided with the seal cover between rotor and the side cap respectively, the sealing member is equipped with at the seal cover overcoat, the inner circle and the seal cover wall connection of sealing member, the interior wall connection of the sealing member mounting hole on outer lane and the side cap, sealing member and seal cover in with the pump case the gaseous of intracavity keep apart with the bearing, cover in both sides and be provided with cyclic annular cavity, be connected with the joint that is used for into drainage on the cyclic annular cavity, be provided with in cyclic annular cavity and carry out the refrigerated coolant liquid to the sealing member, the utility model discloses cover in both sides and set up cyclic annular cavity to cool off the sealing member at the ring, prevent that sealing kit lost efficacy, and then make gas in the pump chamber produce the bearing to corrode, improved the life of bearing, and then improved lobe pump's life.
Description
Technical field:
The utility model belongs to vacuum pump technology field, refers in particular to a kind of lobe pump.
Background technology:
Lobe pump is a kind of application pumping equipment very widely, can be in thick, middle vacuum range workDo, belong to energy-efficient electronic product, in national economy, each department has obtained increasingly extensive application.The basic functional principle of lobe pump is similar with the operation principle of Roots blower, and a pair of synchronous height is housed in pump chamberThe figure of eight two lobe rotor of speed rotation, these two rotors counter-rotate in pump chamber, when work, rotor itBetween not friction and the rotor pump housing friction of also getting along well, now rotor formed together working space with the pump housing andProduce air-breathing and exhaust. Because it is in the work of low pressure scope, gas molecule free path is longer, and gas leaksThe resistance of crossing position eyelet gap is very large, thereby can obtain higher compression ratio, and can be used as booster pump and use, butBe middle Vacuum Roots pump due to its structure and Power Limitation, it can not directly be discharged to gas in atmosphere independentlyGo, need and fore vacuum series connection of pumps use, the gas now being extracted is discharged to atmosphere by forepumpIn go.
The main rotor of existing lobe pump, be arranged on both sides from rotor by bearing and cover, and in two bearingsThe inner is respectively arranged with sealing shroud so that pump chamber and bearing are kept apart. Due to lobe pump in the course of the work,Main rotor, rotate together from rotor banding movable sealing sleeve, the sealing effectiveness of sealing shroud is poor, can not effectively isolateGas in pump chamber and bearing. Because the gas in pump chamber has certain corrosivity, gas produces bearingCorrosion, bearing is perishable, greatly reduces the service life of bearing, and then has reduced the service life of lobe pump.
Summary of the invention:
The purpose of this utility model is to provide a kind of lobe pump of long service life.
The utility model is achieved in that
A kind of lobe pump is provided with main rotor and from rotor in pump case, main rotor with divide from the two ends of rotorBe not arranged on both sides by bearing and cover, main rotor is driven and is rotated by motor, main rotor and the one end from rotorStretch out outside corresponding side cover, and by meshed transmission gear disposed thereon, at main rotor and from rotor twoBetween the main rotor of end bearing inner side and side cover and be respectively arranged with sealing shroud between rotor and side cover, sealingCover, with main rotor, from rotor rotation, is set with seal outward at sealing shroud, the inner ring of seal and sealing shroudOuter wall connection, outer ring are connected with the inwall of the seal installing hole on side cover, and seal and sealing shroud are by pump caseGas in inner chamber and bearing isolation, cover and be provided with annular chamber in both sides, is connected with use in annular chamberIn the joint that enters draining, in annular chamber, be provided with and can carry out cooling cooling fluid to seal.
In technique scheme, described seal is positioned at one end near bearing on sealing shroud.
In technique scheme, described bearing is all arranged on corresponding side cover by bearing block.
In technique scheme, one end of described main rotor is provided with driving gear, establishes from one end of rotorBe equipped with driven gear, driving gear and driven gear engaged transmission.
In technique scheme, one end of described driving gear, driven gear is provided with reamer, initiativelyGear set is outside main rotor, and driven gear is sleeved on from rotor, at main rotor outer wall and driving gearReamer inwall and be disposed with from the inside to the outside gear between the reamer inwall of rotor outer wall and driven gearCircle, tightening hoop, and realize main rotor and driving gear by gear pressing plate, from consolidating of rotor and driven gearConnect.
In technique scheme, described joint includes water supply connector and water out adapter, and water supply connector is positioned atThe upper end of side cover, the lower end that water out adapter is positioned at side cover.
In technique scheme, described two side covers are provided with end cap outward.
The advantage that the utility model is given prominence to is compared to existing technology:
1, the utility model covers annular chamber is set in both sides, and it is passable that cooling fluid is set in annular chamberSeal is carried out cooling, prevent because of main rotor, from the rotation band movable sealing sleeve of rotor rotate with seal itBetween rub hot and Seal Kit lost efficacy, and then make gas in pump chamber produce corrosion to bearing, improvedThe service life of bearing, and then the service life of having improved lobe pump;
2, the water supply connector of the utility model setting and water out adapter are convenient to the input of the cooling fluid in annular chamberWith discharge, simple to operation, result of use is good;
3, the utility model has solved existing user and has frequently changed bearing, joint because the service life of bearing is lowApproximately user's use cost, reduced and stopped work on producing the impact that causes because of lobe pump.
Brief description of the drawings:
Fig. 1 is part section front view of the present utility model;
Fig. 2 is the A-A generalized section of Fig. 1;
Fig. 3 is the B portion enlarged diagram of Fig. 2.
Detailed description of the invention:
With specific embodiment, the utility model is further described below, referring to Fig. 1-3:
A kind of lobe pump is provided with main rotor 2 and from rotor 3 in pump case 1, main rotor 2 with from rotor 3Two ends be arranged on two side covers 4,5 by bearing respectively, one end of main rotor 2 by motor drive rotate,Main rotor 2 is with from the other end of rotor 3 stretches out corresponding side cover 5, and by gear disposed thereonEngaged transmission, main rotor 2 and between the main rotor 2 of rotor 3 bearings at both ends inner sides and side cover 4,5 andBetween rotor 3 and side cover 4,5, be respectively arranged with sealing shroud 6, sealing shroud 6 is with main rotor 2, from rotor 3Be connected, sealing shroud 6 rotates along with main rotor 2 with from rotor 3, is set with seal 22 outside sealing shroud 6,The inner ring of seal 22 is connected with the outer wall of sealing shroud 6, seal installing hole on outer ring and side cover 4,5Inwall connect, seal 22 is isolated the gas of pump case 1 inner chamber and bearing with sealing shroud 6, at two side covers4, be provided with annular chamber 7 on 5, in annular chamber 7, be connected with into the joint of water and draining, at ring chamberIn chamber 7, be provided with and can carry out cooling cooling fluid to sealing shroud 6. Annular chamber 7 be positioned at seal 22 outsideSide, cooling fluid is lowered the temperature to side cover 4,5 annular chamber 7 is interior, thereby carries out cooling to seal 22.
In technique scheme, described seal 22 is positioned at one end near bearing on sealing shroud 6.
The bearing that the utility model is arranged on side cover 4 is self-aligning ball bearing 10, is arranged on the axle on side cover 5Hold as cylinder roller bearing 11.
The equal cylinder roller bearing 11 of described bearing is arranged on side cover 5 by bearing block 12. Self-aligning ball bearing10 are fixed on side cover 4 by bearing block and bearing gland.
In technique scheme, one end of described main rotor 2 is provided with driving gear 14, from rotor 3One end is provided with driven gear 15, driving gear 14 and driven gear 15 engaged transmission.
In technique scheme, one end of described driving gear 14, driven gear 15 is provided with reamer,Driving gear 14 is sleeved on outside main rotor 2, and driven gear 15 is sleeved on from rotor 3, at main rotor 2The reamer inwall of outer wall and driving gear 14 and from the reamer inwall of rotor 3 outer walls and driven gear 15Between be disposed with from the inside to the outside back-up ring 16, tightening hoop 17, and realize main rotor 2 by gear pressing plate 18With driving gear 14, from being connected of rotor 3 and driven gear 15. At driving gear 14, driven gear 15And between corresponding bearing (cylinder roller bearing 11), be provided with back-up ring 21, back-up ring 21 is arranged on bearing blockOn 12, back-up ring 21 prevents driving gear 14, driven gear 15 and corresponding bearing (cylinder roller bearing 11)End-face friction.
In technique scheme, described joint includes water supply connector 8 and water out adapter 9, water supply connector 8The upper end, the water out adapter 9 that are positioned at side cover 4,5 are positioned at the lower end of side cover 4,5, are convenient to the input of cooling fluidWith discharge. Stopping using for a long time or cold zone, be by cooling fluid emptying, prevent that cooling fluid from freezing to causeSide cover 4,5 bursting by freezing.
In technique scheme, the outer end cap 19,20 that is provided with of described two side cover 4,5.
The utility model is in when work, main rotor 2, is with movable sealing sleeve 6 to rotate from rotor 3, sealing shroud 6And frictional heating between seal 22, lowers the temperature to seal 22 by the cooling fluid in annular chamber 7,Keep the sealing property of seal 22, avoid causing the use of lobe pump because gas attack causes bearing damageLife-span is short.
Above-described embodiment is only one of preferred embodiment of the present utility model, not limits this reality with thisWith novel practical range, therefore: all do according to shape of the present utility model, structure, principle etc.Effect changes, within all should being covered by protection domain of the present utility model.
Claims (7)
1. a lobe pump is provided with main rotor and from rotor in pump case, main rotor and two ends from rotorBe arranged on both sides by bearing respectively and cover, main rotor by motor drive rotate, main rotor with from one of rotorEnd stretches out outside corresponding side cover, and by meshed transmission gear disposed thereon, at main rotor and from rotorBetween the main rotor of bearings at both ends inner side and side cover and be respectively arranged with sealing shroud between rotor and side cover, closeBig envelope, with main rotor, from rotor rotation, is characterized in that: be set with seal, seal outward at sealing shroudInner ring be connected with sealing shroud outer wall, outer ring is connected with the inwall of the seal installing hole on side cover, seal, cover and be provided with annular chamber in both sides, ring-type the gas in pump case inner chamber and bearing isolation with sealing shroudOn chamber, be connected with the joint for entering draining, in annular chamber, be provided with and can carry out cooling to sealCooling fluid.
2. a kind of lobe pump according to claim 1, is characterized in that: described seal is positioned at sealingPut the one end near bearing.
3. a kind of lobe pump according to claim 1, is characterized in that: described bearing all passes through bearingSeat is arranged on corresponding side cover.
4. a kind of lobe pump according to claim 1, is characterized in that: establish one end of described main rotorBe equipped with driving gear, be provided with driven gear from one end of rotor, driving gear and driven gear engaged transmission.
5. a kind of lobe pump according to claim 4, is characterized in that: described driving gear, drivenOne end of gear is provided with reamer, and driving gear is sleeved on outside main rotor, and driven gear is sleeved on from rotorOutward, at the reamer inwall of main rotor outer wall and driving gear and from the reamer of rotor outer wall and driven gearBetween inwall, be disposed with from the inside to the outside back-up ring, tightening hoop, and realize main rotor and master by gear pressing plateMoving gear, from being connected of rotor and driven gear.
6. a kind of lobe pump according to claim 1, is characterized in that: described joint includes into waterJoint and water out adapter, water supply connector is positioned at the upper end of side cover, the lower end that water out adapter is positioned at side cover.
7. a kind of lobe pump according to claim 1, is characterized in that: described two side covers all arrange outwardThere is end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009070.XU CN205260308U (en) | 2015-12-07 | 2015-12-07 | Lobe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009070.XU CN205260308U (en) | 2015-12-07 | 2015-12-07 | Lobe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260308U true CN205260308U (en) | 2016-05-25 |
Family
ID=56001838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009070.XU Expired - Fee Related CN205260308U (en) | 2015-12-07 | 2015-12-07 | Lobe pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260308U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089707A (en) * | 2016-06-13 | 2016-11-09 | 江苏润海能源科技有限公司 | Energy-saving and high-pressure Roots blower |
| CN107061284A (en) * | 2017-04-11 | 2017-08-18 | 浙江神工真空设备制造有限公司 | A kind of Roots vaccum pump |
| WO2018024050A1 (en) * | 2016-08-05 | 2018-02-08 | 北京朗禾科技有限公司 | Bi-motor composite-rotor double-shaft transmission device |
-
2015
- 2015-12-07 CN CN201521009070.XU patent/CN205260308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089707A (en) * | 2016-06-13 | 2016-11-09 | 江苏润海能源科技有限公司 | Energy-saving and high-pressure Roots blower |
| WO2018024050A1 (en) * | 2016-08-05 | 2018-02-08 | 北京朗禾科技有限公司 | Bi-motor composite-rotor double-shaft transmission device |
| CN107061284A (en) * | 2017-04-11 | 2017-08-18 | 浙江神工真空设备制造有限公司 | A kind of Roots vaccum pump |
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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: 20160525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |