CN2077496U - Inner-engaged outward spiral string screw arbor pump - Google Patents
Inner-engaged outward spiral string screw arbor pump Download PDFInfo
- Publication number
- CN2077496U CN2077496U CN 90213795 CN90213795U CN2077496U CN 2077496 U CN2077496 U CN 2077496U CN 90213795 CN90213795 CN 90213795 CN 90213795 U CN90213795 U CN 90213795U CN 2077496 U CN2077496 U CN 2077496U
- Authority
- CN
- China
- Prior art keywords
- spiral
- internal diameter
- section
- screw rod
- screw arbor
- 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 - Lifetime
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Abstract
The utility model relates to an inner-engaged outward spiral string screw arbor pump for conveying the liquid, composed of a tubular casing with a liquor inlet and a liquor outlet whose partial inner diameter is spiral and a screw arbor arranged in the casing. The utility model is characterized in that the transverse cross-section of the spiral inner diameter is a regular polygon tooth profile. The transverse cross-section of the screw arbor is an outward spiral string tooth profile whose convex angle is less one than the edge number of the regular polygon of the inner diameter of the casing. The utility model has the advantages of reasonable structure, stable operation, long service life, good transmission performance and large discharge capacity.
Description
The utility model relates to a kind of for the screw pump of carrying liquid.
It is reported that at present the screw pump that uses is by part internal diameter shape and have the tubular shell of liquid entering hole, liquid outlet and the single-threaded screw rod in eccentric circle cross section that is located in the housing is constituted in the shape of a spiral.The deficiency of this pump is, galloping when single-unit uses has only more piece to be associated in to use together just can make its running steadily, and therefore, its transmission performance is subjected to certain influence, and has correspondingly increased the volume of pump.
The purpose of this utility model is in order to overcome the deficiency of said pump, to provide a kind of rational in infrastructure, and the single-unit service firing is steady, and transmission performance is good, discharge capacity is big, the interior engagement outward turning string of a musical instrument screw pump of long service life.
Technical solution of the present utility model is, existing screw pump is improved, soon the housing internal diameter of shape part is made the flank profil that cross section is a regular polygon in the shape of a spiral, and it is that salient angle is lacked one outward turning string of a musical instrument flank profil than the regular polygon limit number of housing internal diameter that screw rod is made cross section.In order to improve flow, spiral housing internal diameter is preferably made the flank profil that cross section is positive triangle, the cross section of screw rod is preferably made the outward turning string of a musical instrument flank profil of two salient angles.In order to help the sealing of active chamber, improve volumetric efficiency and working pressure, can be provided with the Stamping Steel Ribbon of making by rubber or plastics at the flange place of screw rod.In order to solve the centrifugal force that screw rod revolution produces, eliminate vibration, the screw rod dead axle is rotated, the spiral part of housing internal diameter can be made and separate with shell wall and along the shell wall rotation.In order to reduce vibration, be convenient to install dynamic balancing and the screw drive axle can be made eccentric dead axle rotation formula.In order to help adjusting the back lash, improve volumetric efficiency, increase the service life and spiral housing internal diameter and screw rod can be made taper.
The utility model is the flank profil of regular polygon owing to spiral housing internal diameter has been made cross section, it is that salient angle is lacked one outward turning string of a musical instrument flank profil than the regular polygon limit number of housing internal diameter that screw rod has been made cross section, therefore, improved transmission performance, it also can be turned round when single-unit uses steadily.In addition, this structural type also relatively rationally, has improved mechanical strength, and it is big to have discharge capacity, advantages such as long service life.
The utility model can be illustrated more clearly in from the accompanying drawing of following examples.
Fig. 1 is first embodiment's of the utility model a structural representation.
Fig. 2 is the sectional view of A-A among Fig. 1.
Fig. 3 is second embodiment's of the utility model a structural representation.
Fig. 4 is the sectional view of B-B among Fig. 3.
Fig. 5 is the 3rd embodiment's of the utility model a structural representation.
Fig. 6 is the sectional view of the C-C of Fig. 5.
Embodiment 1,
Interior engagement outward turning string of a musical instrument screw pump illustrated in figures 1 and 2 is by housing 4, is contained in screw rod 9, bearing 6, oil sealing 2 in the housing 4 and universal joint 1, the transmission shaft 8 that is connected with screw rod 9, and input shaft 3 constitutes.Housing 4 is that one one end has a liquid entering hole 10, and the other end has an axle bed 5, and sidewall has the tubular shell of a liquid outlet 7.At the housing internal diameter that is positioned at liquid entering hole 10 ends shape in the shape of a spiral, its cross section is positive triangle flank profil.The cross section of screw rod 9 is the outward turning string of a musical instrument flank profil of two salient angles.
Referring to Fig. 3, Fig. 4, different is that spiral housing internal diameter is and shell wall separates and can rotate along shell wall with embodiment 1 for it.At the liquid entering hole place screw-bearing 11 is housed.One end of its screw rod 9 has an axle that directly is connected with outer power.Remaining part is identical with embodiment 1.
Referring to Fig. 5, Fig. 6, different is that spiral housing internal diameter is connected on the shell wall by gluing with embodiment 2 for it, and housing internal diameter and screw rod 9 all be tapers, the transmission shaft eccentric shaft of its screw rod 9.Remaining part is identical with embodiment 2.
Claims (4)
1, a kind of interior engagement outward turning string of a musical instrument screw pump, include part internal diameter shape and have the tubular shell (4) of liquid entering hole (10), liquid outlet (7) and be located at screw rod (9) in the housing (4) in the shape of a spiral, the cross section that it is characterized in that spiral housing internal diameter is the regular polygon flank profil, and the cross section of screw rod (9) is that salient angle is lacked one outward turning string of a musical instrument flank profil than the regular polygon limit number of housing internal diameter.
2, screw pump according to claim 1, the cross section that it is characterized in that said spiral housing internal diameter are positive triangle flank profils, and the cross section of screw rod (9) is the outward turning string of a musical instrument flank profil of two salient angles.
3, screw pump according to claim 1, the spiral part that it is characterized in that the housing internal diameter is separated with shell wall and is rotated along shell wall.
4, screw pump according to claim 1 is characterized in that said spiral housing internal diameter and screw rod (9) all are tapers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213795 CN2077496U (en) | 1990-09-06 | 1990-09-06 | Inner-engaged outward spiral string screw arbor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90213795 CN2077496U (en) | 1990-09-06 | 1990-09-06 | Inner-engaged outward spiral string screw arbor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2077496U true CN2077496U (en) | 1991-05-22 |
Family
ID=4893236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90213795 Expired - Lifetime CN2077496U (en) | 1990-09-06 | 1990-09-06 | Inner-engaged outward spiral string screw arbor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2077496U (en) |
-
1990
- 1990-09-06 CN CN 90213795 patent/CN2077496U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |