CN201991770U - Eccentric birotor pump - Google Patents
Eccentric birotor pump Download PDFInfo
- Publication number
- CN201991770U CN201991770U CN2011200637806U CN201120063780U CN201991770U CN 201991770 U CN201991770 U CN 201991770U CN 2011200637806 U CN2011200637806 U CN 2011200637806U CN 201120063780 U CN201120063780 U CN 201120063780U CN 201991770 U CN201991770 U CN 201991770U
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- pump
- rotor
- eccentric
- birotor
- internal rotor
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Abstract
The structure of an eccentric birotor pump mainly comprises an inner and an outer rotor, a main shaft driving the inner rotor to rotate, a feed port that is on the inner rotor and communicates with an inner chamber space and an outer chamber space, and a discharge port that is arranged on the outer rotor to pump out materials in the pump. The inner rotor and the outer rotor are connected through a slip sheet at the tangent joint. The pump is characterized in that the inner rotor is wrapped with one layer of soft materials that cover the outer surface of the inner rotor that is in contact and friction with the outer rotor; the soft materials are compressed and assembled between the inner rotor and the outer rotor at a prepressing amount; and the slip sheet is also provided with a wear-resistant sealing material layer. The sealing problem between the inner and the outer rotor of the eccentric birotor pump is thoroughly solved. The manufacturing precision of pump parts can be reduced, sealing can be further perfected, internal leakage is decreased to maximum degree and pump efficiency is improved.
Description
[technical field]
The utility model relates to and is used for multiphase mixing transmission pump, relates in particular to the dual-rotor structure of eccentric birotor pump, and sealing and the wear-resistant structure of slide plate in the structure.
[background technique]
Usually can run into the problem of mass transport, transfer in industry, food, pharmacy industry; and need to carry in these industries all is seldom to be that the single material that separates all is the multiphase mixture material usually usually; in this case; usually use multiphase pump to finish multiphase mixture matter; material under solid-state, liquid, the gaseous state admixture is carried pressurization; as helical rotor pump, displacement pump, eccentric rotarypump etc., wherein the eccentric birotor pump is a kind of revolving displacement pump.The material that is mainly used in the gas, liquid, solid attitude carry out three-phase mix carry, pressurization, also can be used for to the medium of single-phase attitude carry, application such as pressurization.
Comprehensive competitive list screw pump, displacement pump and eccentric birotor pump, widely used mixed transferring technology generally all adopts helical rotor pump now, the eccentric double rotor mixes defeated pump because the advantage of itself structural principle can realize that the gamut indifference from single medium to mixed medium is carried pressurization.Especially solved the media problem that helical rotor pump can not be carried the pure gaseous state of pressurization.Therefore the eccentric birotor pump mixed contribute that is applied to multiple states of matter medium is used widely.
Existing eccentric birotor pump is respectively around different rotational in the inner and outer rotors arranged off-centre, directly pass through a slide plate transmission at internal rotor and external rotor, rotate the drive slide plate by internal rotor, slide plate drives external rotor again and rotates, between the interior circle of the cylindrical of internal rotor and external rotor, form meniscate space like this, along with this meniscate spatial volume of rotation of inner and outer rotors changes.The interior circle of the cylindrical of internal rotor and external rotor is tangent has in addition formed two crescent-shaped spaces that the volume variation tendency is opposite with cutting apart of slide plate, thereby realizes the compression and the pumping function of medium.Existing eccentric birotor pump is directly to use hard (steel etc.) material, by corresponding part accuracy of manufacturing and installation precision guarantee the point of contact of inner and outer rotors and slide plate and the hinged of external rotor and and cooperating of internal rotor chute realize sealing, be partitioned into two crescent-shaped spaces, realize pumping function by each spinning of inner and outer rotors.Mix in the defeated pump at existing eccentric double rotor, because may be in actual operation, cause pump in running, to have problem aspect two because of pure gaseous medium.The sealing problem of first inner and outer rotors phase tangent line is owing to be that two stiff dough match and are difficult to accomplish seal up fully gas medium.And have corresponding wearing and tearing in using and cause internal leakage.Its two slide plate cooperates with also adopting two stiff dough cooperating of internal rotor vane slot, equally also has sealing and wear problems.The operating life that existing for above-mentioned reasons eccentric double rotor mixes defeated pump has been subjected to very big influence.Therefore solving above-mentioned two problems is to improve the principal element that the eccentric double rotor mixes the defeated pump work life-span.
[summary of the invention]
The utility model at above problem proposed a kind ofly to promote between the inner and outer rotors, seal degree between rotor and the slide plate, reduce the rigid wearing and tearing between the rotor, prolong the eccentric birotor pump in eccentric birotor pump life-span.
The technical solution of the utility model is: described eccentric double rotor pump structure mainly comprises, inner and outer rotors, drive the main shaft that internal rotor rotates, the material feeding mouth that is communicated with inner chamber space and mistress space is arranged on internal rotor, on external rotor, be provided with the discharge port that material in the pump is pumped, described internal rotor is connected by slide plate with external rotor tangent line connecting part, it is characterized in that, coat one deck soft material on the described internal rotor, described soft material covers the outer surface that internal rotor contacts with external rotor and rubs, described soft material contracts with the precompressed piezometric and is assembled to interior the commentaries on classics between last and the external rotor, also has the wear-resisting sealed material layer of one deck on the described slide plate.
Described soft material is rubber or macromolecular material.As nitrile rubber (HRB), fluorine rubber (FKM), or the composite material of PTFE, PTFE and polyether-ether-ketone.
Described soft material is pre-stressed between the inner and outer rotors, and the hermetic unit between the inner and outer rotors is sealing strip.
On the periphery of internal rotor, dig out dovetail groove, the soft material of coating be embedded into block in the dovetail groove fixing.Improve the adhesive strength and the durability of clad and internal rotor.
Make round tube hole or tapped hole at the thickness direction of described slide plate, the outer abrasive sealing materials that coats of slide plate is fixedly connected by through hole or screw mode, and this coating mode is guaranteed the join strength and the life-span of wear-resistant sealing layer.
The beneficial effects of the utility model: the solution that the sealing problem between the inner and outer rotors of eccentric birotor pump improves.Can reduce the accuracy of manufacturing of pump component and improve sealing further, reduce internal leakage to the full extent, improve pump efficiency.
[description of drawings]
Fig. 1 is the utility model one example structure schematic representation;
Fig. 2 is this example axial section structural representation;
Fig. 3 is the oat tail groove structure schematic representation;
Fig. 4 is the slide vane structure schematic representation.
Wherein: 1, external rotor; 2, external rotor rotating center; 3, main shaft; 4, slide plate; 5, axial inlet; 6, internal rotor rotating center; 7, internal rotor; 8, soft material; 9, sealed material layer; 10, radial inlet; 11, outlet; 12, pressure chamber; 13, imbibition chamber; 14, dovetail groove.
[embodiment]
In order to make the purpose of this utility model, technological scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.
Embodiment 1:
The working principle of existing eccentric birotor pump: by main shaft 3 power is reached internal rotor 7, make internal rotor 7 around 6 rotations of internal rotor rotating center.By slide plate 4 power is reached external rotor 1 simultaneously, make it, rotate according to the external rotor sense of rotation around external rotor rotating center 2.Internal rotor 7 and external rotor 1 have formed the crescent shape chamber pressure chamber 12 and the imbibition chamber 13 of two variations in each autorotation.Pressure chamber 12 volumes are from diminishing greatly; Realization is to the compression of liquid in the pump.Imbibition chamber 13 is big from little change; Realization is with the action in the liquid suction cavity in the pump.Finish the cycle of a compression, imbibition after rotating a circle separately.Do not have sealing material between internal rotor 7 and external rotor 1, slide plate 13 is directly to be contained in the hinging hole of external rotor 1, and seals with the relative slippage of vane slot of internal rotor 7, without any the anti-attrition sealing material.
Described eccentric double rotor pump structure mainly comprises, internal rotor 7, external rotor 1, drive the main shaft 3 that internal rotor rotates, the radial inlet 10 that is communicated with inner chamber space and mistress space is arranged on internal rotor 7, shown in also have axial inlet 5 between internal rotor and the main shaft, the discharge port 11 that material pumps in being provided with pump on the external rotor 1 of tubulose, described internal rotor 7 is connected by slide plate 4 with external rotor 1 tangent line connecting part, it is characterized in that, coat one deck soft material 8 on the described internal rotor 7, described soft material covers the outer surface that internal rotor contacts with external rotor and rubs, described soft material 8 contracts with the precompressed piezometric and is assembled to interior the commentaries on classics between last and the external rotor, also has the wear-resisting sealed material layer of one deck 9 on the described slide plate.
Described soft material 8 is rubber or macromolecular material.As HRB, FKM, or PTFE, polyether-ether-ketone.In order to ensure intensity and wear resistance, macromolecular material can add various antifriction materials.As Cn, MoS
2, graphite, spherical graphite, carbon fiber etc., to increase its wear resistance and the strength of materials and hardness.
Described soft material 8 is pre-stressed between the inner and outer rotors, and the sealing position between the inner and outer rotors is sealing strip.
On the periphery of internal rotor, dig out dovetail groove 14, the soft material of coating be embedded into block in the dovetail groove 14 fixing.Improve the adhesive strength and the durability of clad and internal rotor.The clad structure and the technique for sticking of the dovetail groove type that adopts can improve the adhesive strength and the durability of clad and internal rotor.
As shown in Figure 3: on the outer round surface of internal rotor 7, leave several dovetail grooves 14, like this being wrapped in soft material 8 on the internal rotor 7 when solidifying on outer surface, play the effect of mechanical anchor, between soft material and internal rotor, coat corresponding tackiness agent in addition, after the curing it is bonded together.
As shown in Figure 4: on the clad structure of slide plate 4 and sealed material layer 9 clads, adopted in the interior thickness direction and the end face direction of slide plate 4 and made round tube hole, perhaps tapped through hole, the outer sealed material layer that coats of slide plate by by or the mode of tapped hole fixedly connected, allow sealed material layer formation in the middle of the slide plate through hole be connected and fixed post, guarantee the durability and the mechanical strength of sealed material layer on the slide plate both sides.
The beneficial effects of the utility model: the solution that the sealing problem between the inner and outer rotors of eccentric dual-rotor pump improves. Can reduce the accuracy of manufacture of pump component and improve further sealing, reduce to the full extent internal leakage, improve pump efficiency. Also greatly prolonged the MTBF(fault first time of pump) time.
Claims (7)
1. an eccentric double rotor pump structure mainly comprises, inner and outer rotors, drive the main shaft that internal rotor rotates, the material feeding mouth that is communicated with inner chamber space and mistress space is arranged on internal rotor, on external rotor, be provided with the discharge port that material in the pump is pumped, described internal rotor is connected by slide plate with external rotor tangent line connecting part, it is characterized in that, coat one deck soft material on the described internal rotor, described soft material covers the outer surface that internal rotor contacts with external rotor and rubs, described soft material contracts with the precompressed piezometric and is assembled to interior the commentaries on classics between last and the external rotor, also has the wear-resisting sealed material layer of one deck on the described slide plate.
2. according to the described eccentric birotor pump of claim 1, it is characterized in that, on the periphery of described internal rotor, dig out dovetail groove, the soft material of coating be embedded into block in the dovetail groove fixing.
3. according to the described eccentric birotor pump of claim 1, it is characterized in that, make round tube hole or tapped hole at the thickness direction and the end face of described slide plate, the outer abrasive sealing materials that coats of slide plate is fixedly connected by through hole or screw mode.
4. according to the described eccentric birotor pump of claim 1, it is characterized in that described soft material is pre-stressed to part between the inner and outer rotors, in the walk around sealing at sub tangent place present sealing strip.
5. according to the described eccentric birotor pump of claim 1, it is characterized in that described soft material is rubber or macromolecular material.
6. according to claim 1 or 5 described eccentric birotor pumps, it is characterized in that described rubber is nitrile rubber, fluorine rubber.
7. according to claim 1 or 5 described eccentric birotor pumps, it is characterized in that described macromolecular material is PTFE, PTFE composite material or polyether-ether-ketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200637806U CN201991770U (en) | 2011-03-13 | 2011-03-13 | Eccentric birotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200637806U CN201991770U (en) | 2011-03-13 | 2011-03-13 | Eccentric birotor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991770U true CN201991770U (en) | 2011-09-28 |
Family
ID=44668259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200637806U Expired - Lifetime CN201991770U (en) | 2011-03-13 | 2011-03-13 | Eccentric birotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135095A (en) * | 2011-03-13 | 2011-07-27 | 深圳乐满商务服务有限公司 | Eccentric birotor pump |
| CN103075339A (en) * | 2011-10-25 | 2013-05-01 | 丹佛斯公司 | Vane cell machine |
-
2011
- 2011-03-13 CN CN2011200637806U patent/CN201991770U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135095A (en) * | 2011-03-13 | 2011-07-27 | 深圳乐满商务服务有限公司 | Eccentric birotor pump |
| CN103075339A (en) * | 2011-10-25 | 2013-05-01 | 丹佛斯公司 | Vane cell machine |
| CN103075339B (en) * | 2011-10-25 | 2016-08-03 | 丹佛斯公司 | Vane cell machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN LEMAN OIL + GAS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI YUEMAN BUSINESS SERVICE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong building A, 4A Patentee after: Shenzhen Leman Oil and Gas Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong building A, 4A Patentee before: Shanghai Yueman Business Service Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20190920 Address after: 528400, No. 7, Dongsheng Industrial Zone, Zhongshan Town, Guangdong, 2 Patentee after: ZHONGSHAN LEMAN PETROLEUM EQUIPMENT CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong building A, 4A Patentee before: Shenzhen Leman Oil and Gas Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
|
| CX01 | Expiry of patent term |