CN206972521U - A kind of new lobe pump - Google Patents
A kind of new lobe pump Download PDFInfo
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- CN206972521U CN206972521U CN201720931786.8U CN201720931786U CN206972521U CN 206972521 U CN206972521 U CN 206972521U CN 201720931786 U CN201720931786 U CN 201720931786U CN 206972521 U CN206972521 U CN 206972521U
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Abstract
The utility model discloses a kind of new lobe pump, including the middle pump housing, fixing seal in drive end bearing bracket and rear end cap on the middle pump housing, two conjugate rotors that mutually conjugation engages are provided with line pump body, conjugate rotors include one or two leaf rotor and a three lobe rotor, the convex face and matrix face of mutually conjugation engagement, the ratio between the face number in the convex face opened up on two leaf rotors, three lobe rotor and the pitch diameter for being equal to two leaf rotors and three lobe rotor of face number in matrix face are provided with the two leaves rotor and three lobe rotor；The utility model improves volumetric efficiency compared with traditional lobe pump, is that compression ratio reaches 42%, while the residual gas being vented every time is reduced to 12%；The linear structure of two leaf rotors and three lobe rotor is capable of the contact area of enhancer and the middle pump housing, improves sealing effectiveness, contributes to the compression ratio of further elevator pump, reach higher pressure at expulsion or vacuum；It can be used separately as Roots vaccum pump, production cost is low, suitable for extensive use in the industrial production.
Description
Technical field
The utility model is related to lobe pump manufacturing technology field, and in particular to a kind of high compression ratio, pressure at expulsion is big,
The strong new lobe pump of vacuum drawn ability.
Background technology
Traditional Roots is simple in construction, easily manufactured, is widely used in aquaculture oxygenation, aeration in sewage treatment, cement
Conveying, it is more suitable for gas conveying and the compression system of low-pressure occasion, it is also possible to make Roots vaccum pump etc..But lobe pump is one
Pump of the kind without interior compression, usual compression ratio is very low, and as the roots blower used time, pressure at expulsion is not high, and single pump pressure at expulsion is maximum
50KPa, double stage tandem roots blower maximum pressure at expulsion is difficult more than 100KPa.Want to reach when applying as Roots vaccum pump
Higher vacuum needs to match somebody with somebody the composition such as fore pump, such as water ring vacuum pump, chip select vavuum pump, reciprocating pump, screw vacuum pump
Unit could work, it is impossible to which individually row's air obtains higher vacuum.
Utility model content
For the deficiency under prior art, the utility model provides a kind of high compression ratio, and pressure at expulsion is big, vacuum drawn energy
The strong new lobe pump of power.
To achieve these goals, technical scheme is used by the utility model solves its technical problem：It is a kind of new
Lobe pump, including the middle pump housing, fixing seal are provided with drive end bearing bracket and rear end cap on the middle pump housing in line pump body
Two conjugate rotors that mutually conjugation engages, the conjugate rotors include one or two leaf rotor and a three lobe rotor, and two leaf turns
The convex face and matrix face of mutually conjugation engagement are provided with son and three lobe rotor, is opened up on two leaf rotors, three lobe rotor convex
The face number in type face is with the face number in matrix face equal to the ratio between pitch diameter of two leaf rotors and three lobe rotor；The three lobe rotor
Circumferentially be evenly arranged with three convex bodies and three indent circular arc matrix faces on outline, the surface profile of the convex body with
Concave arc shape matrix face forms the outline end face of three lobe rotor, be provided with the outline edge of three lobe rotor three groups it is continuous
The outline constituent curve of three lobe rotor bilateral symmetry circular arc type line style, one of which three lobe rotor bilateral symmetry circular arc type line style
Outline constituent curve by the first raised arc section on the outline edge of three lobe rotor, the first cycloid section, indent
Circular arc type concave surface section, the second cycloid section, the second raised arc section, the 3rd raised arc section are sequentially connected composition；Two leaf turns
The both ends of son are symmetrically arranged with the arc-shaped convex engaged with the indent circular arc matrix face phase conjugate of three lobe rotor, positioned at two leaves
The on both sides of the middle of rotor be symmetrically arranged with the male and fomale(M＆F) that engage of the convex body phase of three lobe rotor conjugation, the two leaves rotor outside
The outline constituent curve of two groups of continuous two leaves rotor bilateral symmetry circular arc type line styles, one of which are provided with profile edge
The outline constituent curve of two leaf rotor bilateral symmetry circular arc type line styles is recessed by first on two leaf rotor outer profile edges
Segmental arc, the first cycloid section, the first convex section, the second cycloid section, the second arcs of recesses section, the second convex section are sequentially connected group
Into.
A kind of new lobe pump that the utility model further provides for, its two leaves rotor bilateral symmetry circular arc type line style it is outer
It is that the outline constituent curve conjugation of profile constituent curve and three lobe rotor bilateral symmetry circular arc type line style, which engage corresponding relation,
The corresponding first raised arc section of one arcs of recesses section, the first cycloid section are corresponding between the first arcs of recesses section and the first cycloid section
Separation, the corresponding separation between the first cycloid section and indent circular arc type concave surface section of the first cycloid section, the first convex
The corresponding indent circular arc type concave surface section of section, the second cycloid section corresponding dividing positioned at indent circular arc type concave surface section and the second cycloid section between
Boundary's point, the corresponding separation between the second cycloid section and the second arcs of recesses section of the second cycloid section, the second arcs of recesses section are corresponding
Second raised arc section, the corresponding 3rd raised arc section of the second convex section.
A kind of new lobe pump that the utility model further provides for, its two leaves rotor and three lobe rotor pass through first respectively
Power transmission shaft and second driving shaft are rotationally connected with line pump body, are be arranged in parallel between the first power transmission shaft and second driving shaft, and
Driving gear pair is additionally provided with the first power transmission shaft and second driving shaft.
A kind of new lobe pump that the utility model further provides, its driving gear pair are that a pair of intermeshings are driven
Synchronous spur gear, and gearratio 2/3.
The beneficial effects of the utility model：The utility model improves volumetric efficiency compared with traditional lobe pump, is compression
Than reaching 42%, while the residual gas being vented every time is reduced to 12%；The linear structure of two leaf rotors and three lobe rotor can
The contact area of enhancer and the middle pump housing, sealing effectiveness is improved, contributes to the compression ratio of further elevator pump, reaches higher
Pressure at expulsion or vacuum；It can be used separately as Roots vaccum pump, without of the present utility model simple in construction with fore pump, production
Cost is low, suitable for extensive use in the industrial production.
Brief description of the drawings
Fig. 1 is three lobe rotor structural representation of the present utility model；
Fig. 2 is two leaves rotor structure schematic diagram of the present utility model；
Fig. 3 is structural representation of the present utility model；
Fig. 4 is one of lobe pump structural representation of prior art；
Fig. 5 is the two of the lobe pump structural representation of prior art；
Fig. 6 is the three of the lobe pump structural representation of prior art；
Fig. 7 is the four of the lobe pump structural representation of prior art；
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of new lobe pump provided by the utility model, including the middle pump housing, fixation it is close
The drive end bearing bracket and rear end cap being encapsulated on the middle pump housing, the conjugation that two mutually conjugation engagements are provided with line pump body turn
Son, the conjugate rotors include one or two leaf rotor 1 and a three lobe rotor 2, are provided with the two leaves rotor 1 and three lobe rotor 2
Mutually it is conjugated the convex face and matrix face of engagement, the face number in the convex face opened up on two leaf rotors 1, three lobe rotor 2 and matrix face
The ratio between the pitch diameter for being equal to two leaf rotors 1 and three lobe rotor 2 of face number (R01/R02)；The outline of the three lobe rotor 2
Upper circumference is evenly arranged with three convex bodies 3 and three indent circular arc matrix faces, surface profile and the recessed circle of the convex body 3
Arc matrix face forms the outline end face of three lobe rotor, and three groups continuous three are provided with the outline edge of three lobe rotor 2
The outline constituent curve of leaf rotor bilateral symmetry circular arc type line style, one of which three lobe rotor bilateral symmetry circular arc type line style
Outline constituent curve is by the first raised arc section AB on the outline edge of three lobe rotor 2, the first cycloid section BC, interior
Concave arc type concave surface section CD, the second cycloid section DE, the second raised arc section EF, the 3rd raised arc section FG are sequentially connected composition；
The both ends of the two leaves rotor 1 are symmetrically arranged with the circular arc engaged with the indent circular arc matrix face phase conjugate of three lobe rotor 2
Projection 4, the bumps engaged with the phase conjugate of convex body 3 of three lobe rotor 2 are symmetrically arranged with positioned at the on both sides of the middle of two leaf rotors 1
Face, the outer of two groups of continuous two leaves rotor bilateral symmetry circular arc type line styles is provided with the outline edge of the two leaves rotor 1
Profile constituent curve, the outline constituent curve of the leaf rotor bilateral symmetry circular arc type line style of one of which two is by positioned at two leaf rotors
It is the first arcs of recesses section HI, the first cycloid section IJ, the first convex section JK, the second cycloid section KL on 1 outline edge, second recessed
Segmental arc LM, the second convex section MN are sequentially connected composition.
The outline constituent curve of the two leaves rotor bilateral symmetry circular arc type line style and three lobe rotor bilateral symmetry circular arc
The outline constituent curve conjugation engagement corresponding relation of molded line type is the corresponding first raised arc section AB of the first arcs of recesses section HI, the
The corresponding separation I, the first cycloid section IJ between the first arcs of recesses section HI and the first cycloid section IJ of one cycloid section BC is corresponding
Concave arc in separation C, the first convex section JK correspondence between the first cycloid section BC and indent circular arc type concave surface section CD
The corresponding separation D between indent circular arc type concave surface section CD and the second cycloid section DE of type concave surface section CD, the second cycloid section KL,
The corresponding separation L, the second arcs of recesses section LM between the second cycloid section KL and the second arcs of recesses section LM of second cycloid section DE
The corresponding 3rd raised arc section FG of corresponding second raised arc section EF, the second convex section MN.
The two leaves rotor 1 and three lobe rotor 2 are rotationally connected with centre by the first power transmission shaft and second driving shaft respectively
In the pump housing, it be arranged in parallel between the first power transmission shaft and second driving shaft, and is also set on the first power transmission shaft and second driving shaft
It is equipped with driving gear pair.
The synchronous spur gears that the driving gear pair is driven for a pair of intermeshings, and gearratio 2/3.
Because traditional lobe pump is a kind of pump without interior compression, usual compression ratio is very low, if as the vavuum pump used time
Configuring high, intermediate pump needs fore pump.The end vacuum of Roots vaccum pump removes and depends on this body structure of pump and the accuracy of manufacture
Outside, the end vacuum of fore pump is additionally depended on.In order to improve the final vacuum of pump, Roots vaccum pump can be used in series.Make
Indented the very low single pump 50KPa of atmospheric pressure without internal pressure for the Roots blower used time.Two-stage series connection of pumps pressure at expulsion is within 100KPa.
Due to the continuous rotation of the rotor of Roots, pumped gas is drawn into the space v0 between rotor and pump case from air inlet
It is interior, then discharged through exhaust outlet.Because v0 spaces are full closeding states after air-breathing, so, pump intracavity gas not compress and it is swollen
It is swollen.But when rotor top turns over exhaust outlet edge, and v0 spaces communicate with exhaust side, because exhaust side gas pressure intensity is higher, then
Some gas recoils into space v0, gas pressure intensity is increased suddenly.When rotor is rotated further, gas excavationg pump
Outside.
As shown in Figures 4 to 7 for traditional roots pump rotor by 0 ° of pumping process for going to 180 °.At 0 ° of position (as schemed
4), lower rotor part Y encloses the gas of v0 volumes from pump intake.When lower rotor part Y goes to 45 ° of positions (Fig. 5), intracavitary v0 volumes
Gas communicates with exhaust outlet.Because exhaust side pressure is higher, a part of gas is caused to recoil.When lower rotor part Y goes to 90 ° of positions
Put (Fig. 6), the gas that lower rotor part Y is enclosed is arranged to outside pump together with the gas to recoil.At this moment, upper rotor part Z also seals from pump intake
Enter the gas of v0 volumes.When upper rotor part Z continues to 135 ° (Fig. 7), the gas that upper rotor part Z is enclosed communicates with exhaust outlet, weight
Multiple said process.Rotor main shaft rotate a circle it is common discharge four v0 volumes gas.
And the convex body 3 of the utility model three lobe rotor 2, two arc-shaped convex 4 of two leaf rotors 1, two leaf rotors 1 are every
Rotate one week, to carry out air-breathing twice and be vented twice.Two leaf rotors 1 and the shaft end of three lobe rotor 2 fill a pair it is ratcheting same mutually
Walk gear.When motor drives two leaf rotors 1, three lobe rotor 2 starts to reversely rotate under the drive of this synchromesh gear.Synchronous gear
The ratcheting of wheel remains the correct phase of two rotors, therefore can realize that the leaf rotor 1 of whole work process two and three lobe rotor 2 are high
Speed operation.Whole working cycle process includes air-breathing, closing, compression, exhaust work process.Compression process be present in new lobe pump
In traditional lobe pump without this process.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Finally it should be noted that：Preferred embodiment of the present utility model described above, is not limited to this practicality
It is new, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., all should be included
Within the scope of protection of the utility model.
Claims (4)
1. a kind of new lobe pump, including the middle pump housing, fixing seal be in drive end bearing bracket and rear end cap on the middle pump housing, in being located at
Between the conjugate rotors of two mutual conjugation engagements are provided with the pump housing, it is characterised in that the conjugate rotors include one or two leaf turn
Sub (1) and a three lobe rotor (2), the convex face for being mutually conjugated and engaging is provided with the two leaves rotor (1) and three lobe rotor (2)
With matrix face, the face number in the convex face opened up on two leaf rotors (1), three lobe rotor (2) is equal to two leaves with the face number in matrix face
The ratio between pitch diameter of rotor (1) and three lobe rotor (2)；Three are circumferentially evenly arranged with the outline of the three lobe rotor (2)
Individual convex body (3) and three indent circular arc matrix faces, surface profile and the concave arc shape matrix face of the convex body (3) form
The outline end face of three lobe rotor, it is bilateral right that three groups of continuous three lobe rotors are provided with the outline edge of three lobe rotor (2)
Claim the outline constituent curve of circular arc type line style, the outline composition song of one of which three lobe rotor bilateral symmetry circular arc type line style
Line is by the first raised arc section (AB) on the outline edge of three lobe rotor (2), the first cycloid section (BC), interior concave arc
Type concave surface section (CD), the second cycloid section (DE), the second raised arc section (EF), the 3rd raised arc section (FG) are sequentially connected group
Into；The both ends of the two leaves rotor (1) are symmetrically arranged with what is engaged with the indent circular arc matrix face phase conjugate of three lobe rotor (2)
Arc-shaped convex (4), it is symmetrically arranged with positioned at the on both sides of the middle of two leaf rotors (1) mutually common with the convex body of three lobe rotor (2) (3)
The male and fomale(M＆F) of yoke engagement, is provided with two groups of continuous two leaves rotor bilateral symmetries on the outline edge of the two leaves rotor (1)
The outline constituent curve of circular arc type line style, the outline constituent curve of the leaf rotor bilateral symmetry circular arc type line style of one of which two
By the first arcs of recesses section (HI) on two leaf rotor (1) outline edges, the first cycloid section (IJ), the first convex section
(JK), the second cycloid section (KL), the second arcs of recesses section (LM), the second convex section (MN) are sequentially connected composition.
A kind of 2. new lobe pump according to claim 1, it is characterised in that the two leaves rotor bilateral symmetry circular arc type
The outline constituent curve of line style is corresponding with the outline constituent curve conjugation engagement of three lobe rotor bilateral symmetry circular arc type line style
Relation is the corresponding first raised arc section (AB) of the first arcs of recesses section (HI), and the first cycloid section (BC) is corresponding to be located at the first arcs of recesses
Separation (I) between section (HI) and the first cycloid section (IJ), the first cycloid section (IJ) it is corresponding positioned at the first cycloid section (BC) and
Separation (C) between indent circular arc type concave surface section (CD), the corresponding indent circular arc type concave surface section (CD) of the first convex section (JK),
The corresponding separation (D) between indent circular arc type concave surface section (CD) and the second cycloid section (DE) of second cycloid section (KL), the
The corresponding separation (L) between the second cycloid section (KL) and the second arcs of recesses section (LM) of two cycloid sections (DE), the second concave arc
The corresponding second raised arc section (EF) of shape section (LM), the corresponding 3rd raised arc section (FG) of the second convex section (MN).
3. a kind of new lobe pump according to claim 1, it is characterised in that the two leaves rotor (1) and three lobe rotor
(2) it is rotationally connected with respectively by the first power transmission shaft and second driving shaft in line pump body, the first power transmission shaft and second driving shaft
Between be arranged in parallel, and be additionally provided with driving gear pair on the first power transmission shaft and second driving shaft.
4. a kind of new lobe pump according to claim 3, it is characterised in that the driving gear pair is mutually nibbled for a pair
Close the synchronous spur gear of transmission, and gearratio 2/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720931786.8U CN206972521U (en) | 2017-07-28 | 2017-07-28 | A kind of new lobe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720931786.8U CN206972521U (en) | 2017-07-28 | 2017-07-28 | A kind of new lobe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206972521U true CN206972521U (en) | 2018-02-06 |
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ID=61398870
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720931786.8U Active CN206972521U (en) | 2017-07-28 | 2017-07-28 | A kind of new lobe pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206972521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821828A (en) * | 2019-11-29 | 2020-02-21 | 宿迁学院 | Hyperbolic rotor for Roots pump |
-
2017
- 2017-07-28 CN CN201720931786.8U patent/CN206972521U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821828A (en) * | 2019-11-29 | 2020-02-21 | 宿迁学院 | Hyperbolic rotor for Roots pump |
| CN110821828B (en) * | 2019-11-29 | 2023-09-15 | 宿迁学院 | Hyperbolic rotor for Roots pump |
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