CN105156319A - Three-screw pump meshing line - Google Patents
Three-screw pump meshing line Download PDFInfo
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- CN105156319A CN105156319A CN201510672123.4A CN201510672123A CN105156319A CN 105156319 A CN105156319 A CN 105156319A CN 201510672123 A CN201510672123 A CN 201510672123A CN 105156319 A CN105156319 A CN 105156319A
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- Prior art keywords
- screw
- driven screw
- driven
- involute
- screw rod
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Abstract
The invention relates to a three-screw pump meshing line. The three-screw pump meshing line comprises a driving screw rod and two driven screw rods, wherein the two driven screw rods are respectively positioned at the two sides of the driving screw rod, the tooth forms of the driven screw rods are composed of circular arc sections ab, cycloid sections bc and involute line sections cd; the circular arc sections ab are dedendum circles of the driven screw rod, bc are curves which are concave inwards relative to the tooth parts of the driven screw rods, and cd are curves which are convex outwards relative to the tooth parts of the driven screw rods; the outer diameters of the driven screw rods are re2, the bottom radiuses of the driven screw rods are ri2, the radiuses of the base circles of involute lines are r02; the tooth form of the driving screw rod is composed of a circular arc section a1b1, an involute line section b1c1 and cycloid sections c1d1; a1b1 is a dedendum circle of the driven screw rod, b1c1 and c1d1 are curves which are convex outwards relative to the tooth parts of the driven screw rods, the outer diameter of the driving screw rod is re1, the bottom radius of the driving screw rod is ri1, and the radius of the base circle of an involute line is r01, wherein the ratio of ri2 to re2 to re1 is 1 to 3 to 5, and re1 is equal to ri1. The three-screw pump meshing line has the advantage that the noise of a pump can be eliminated or lowered.
Description
Technical field
The invention belongs to the molded line field of screw pump, particularly relate to a kind of three screw pump meshing profile.
Background technique
In traditional three screw pump, driving screw and adopt the cycloid of mutual conjugation from tooth shape of screw, form sealing profile of tooth, quick-wearing is crossed in order to prevent the profile of tooth cusp of driven screw, generally adopt the mode of chamfered edge, as straight line chamfered edge or circular arc chamfered edge etc., in general, the feature of its sealing profile of tooth is not changed.In some specific operating mode occasions, when containing gas in medium, due to bubble compression and release in course of conveying in pump, larger noise and vibration can be caused, affect the normal use of pump, at present, in the various function oil systems such as boats and ships, petrochemical industry, metallurgy, power industry, what generally adopt is traditional three screw pump.Traditional three screw pump screw rod meshing profile generally adopts outer pendulum flowing medium to produce noise, and therefore and special dimension higher for environmental requirement produces considerable influence.
Summary of the invention
The present invention provides a kind of three screw pump meshing profile for solving in known technology the technical problem that exists, and the noise of pump can be eliminated or reduce to this three screw pump.
The technological scheme that the present invention takes for the technical problem existed in solution known technology is:
A kind of three screw pump meshing profile, comprises 1 initiatively screw rod and 2 driven screw, and 2 driven screw lay respectively at initiatively screw rod both sides,
The profile of tooth of driven screw is made up of arc section ab, cycloid section bc, involute section cd; Arc section ab is the root circle of driven screw, and bc is the curve relative to driven screw teeth portion indent, and cd is the curve relative to driven screw teeth portion evagination; The outer radius of driven screw is r
e2, end radius is r
i2, involute Base radius is r
02;
Initiatively the profile of tooth of screw rod is by arc section a
1b
1, involute section b
1c
1, cycloid section c
1d
1form; a
1b
1for the root circle of driven screw, b
1c
1, c
1d
1for the curve relative to driven screw teeth portion evagination, initiatively the outer radius of screw rod is r
e1, end radius is r
i1, involute Base radius is r
01;
Wherein r
i2: r
e2: r
e1=1:3:5, r
e1=r
i1;
The present invention can also by the following technical solutions:
Preferably, driven screw profile of tooth cycloid section bc is active screw rod d
1point is with r
e2for basic circle r
i1for round as a ball formation; Initiatively tooth shape of screw cycloid section c
1d
1, for driven screw c point is with r
i1for basic circle r
e2for round as a ball formation; Driven screw profile of tooth bc and active tooth shape of screw c
1d
1conjugation, engages each other;
Preferably, active screw rod involute Base radius r
01=driven screw involute Base radius r
02;
Preferably, driven screw profile of tooth involute section cd and active tooth shape of screw involute section b
1c
1conjugation, engages each other.
The advantage that the present invention has and good effect are:
After present invention employs above technological scheme, it is more steady that introducing involute profile can make principal and subordinate's screw rod operate.Provide a kind of unsealed cycloid involute combination three screw pump meshing profile, vibrating noise problem line and hypocycloid meshing profile is caused except solving gassiness in medium, the Seal cage formed is for the flowing medium containing gas or outside easily gasifying, rely on the power transmission effect that involute section is good, make the running of pump more steady, thus reduce the vibrating noise of pump further.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, active screw rod; 2, driven screw.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1,
A kind of three screw pump meshing profile, initiatively screw rod 1 and 2 driven screw, 2,2 driven screw lay respectively at initiatively screw rod both sides to comprise 1.
The profile of tooth of driven screw 2 is made up of arc section ab, cycloid section bc, involute section cd; Arc section ab is the root circle of driven screw, and bc is the curve relative to driven screw teeth portion indent, and cd is the curve relative to driven screw teeth portion evagination; The outer radius of driven screw is r
e2, end radius is r
i2, involute Base radius is r
02.
Initiatively the profile of tooth of screw rod 1 is by arc section a
1b
1, involute section b
1c
1, cycloid section c
1d
1form; a
1b
1for the root circle of driven screw, b
1c
1, c
1d
1for the curve relative to driven screw teeth portion evagination, initiatively the outer radius of screw rod is r
e1, end radius is r
i1, involute Base radius is r
01.
Wherein r
i2: r
e2: r
e1=1:3:5, r
e1=r
i1.
Driven screw profile of tooth cycloid section bc is active screw rod d
1point is with r
e2for basic circle r
i1for round as a ball formation; Initiatively tooth shape of screw cycloid section c
1d
1, for driven screw c point is with r
i1for basic circle r
e2for round as a ball formation; Driven screw profile of tooth bc and active tooth shape of screw c
1d
1conjugation, engages each other.
Initiatively screw rod involute Base radius r
01=driven screw involute Base radius r
02.
Driven screw profile of tooth involute section cd and active tooth shape of screw involute section b
1c
1conjugation, engages each other.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (4)
1. a three screw pump meshing profile, comprises 1 initiatively screw rod and 2 driven screw, and 2 driven screw lay respectively at initiatively screw rod both sides, it is characterized in that:
The profile of tooth of driven screw is made up of arc section ab, cycloid section bc, involute section cd; Arc section ab is the root circle of driven screw, and bc is the curve relative to driven screw teeth portion indent, and cd is the curve relative to driven screw teeth portion evagination; The outer radius of driven screw is r
e2, end radius is r
i2, involute Base radius is r
02;
Initiatively the profile of tooth of screw rod is by arc section a
1b
1, involute section b
1c
1, cycloid section c
1d
1form; a
1b
1for the root circle of driven screw, b
1c
1, c
1d
1for the curve relative to driven screw teeth portion evagination, initiatively the outer radius of screw rod is r
e1, end radius is r
i1, involute Base radius is r
01;
Wherein r
i2: r
e2: r
e1=1:3:5, r
e1=r
i1.
2. a kind of three screw pump meshing profile according to claim 1, is characterized in that: the profile of tooth cycloid section bc of described driven screw, is active screw rod d
1point is with r
e2for basic circle r
i1for round as a ball formation; The profile of tooth cycloid section c of described active screw rod
1d
1, for driven screw c point is with r
i1for basic circle r
e2for round as a ball formation; Driven screw profile of tooth bc and active tooth shape of screw c
1d
1conjugation, engages each other.
3. a kind of three screw pump meshing profile according to claim 1, is characterized in that: described active screw rod involute Base radius r
01=driven screw involute Base radius r
02.
4. a kind of three screw pump meshing profile according to claim 1, is characterized in that: described driven screw profile of tooth involute section cd and active tooth shape of screw involute section b
1c
1conjugation, engages each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672123.4A CN105156319A (en) | 2015-10-16 | 2015-10-16 | Three-screw pump meshing line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672123.4A CN105156319A (en) | 2015-10-16 | 2015-10-16 | Three-screw pump meshing line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105156319A true CN105156319A (en) | 2015-12-16 |
Family
ID=54797315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510672123.4A Pending CN105156319A (en) | 2015-10-16 | 2015-10-16 | Three-screw pump meshing line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122005A (en) * | 2016-08-24 | 2016-11-16 | 黄山工业泵制造有限公司 | A kind of three screw rods using circular arc modified tooth profile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU672380A1 (en) * | 1978-02-22 | 1979-07-05 | Ливенский Филиал Всесоюзного Научно-Исследовательского, Конструкторского И Технологического Института Гидромашиностроения | Screw pump teeth engagement |
| CN202493426U (en) * | 2012-02-01 | 2012-10-17 | 河北恒盛泵业股份有限公司 | Novel three-screw pump molded line |
| CN205190199U (en) * | 2015-10-16 | 2016-04-27 | 天津泵业机械集团有限公司 | Three -screw pump meshes molded lines |
-
2015
- 2015-10-16 CN CN201510672123.4A patent/CN105156319A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU672380A1 (en) * | 1978-02-22 | 1979-07-05 | Ливенский Филиал Всесоюзного Научно-Исследовательского, Конструкторского И Технологического Института Гидромашиностроения | Screw pump teeth engagement |
| CN202493426U (en) * | 2012-02-01 | 2012-10-17 | 河北恒盛泵业股份有限公司 | Novel three-screw pump molded line |
| CN205190199U (en) * | 2015-10-16 | 2016-04-27 | 天津泵业机械集团有限公司 | Three -screw pump meshes molded lines |
Non-Patent Citations (2)
| Title |
|---|
| 曾敏: "三螺杆泵设计及转子型线优化研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 王彦斌: "三螺杆泵参数化建模及有限元分析", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122005A (en) * | 2016-08-24 | 2016-11-16 | 黄山工业泵制造有限公司 | A kind of three screw rods using circular arc modified tooth profile |
| CN106122005B (en) * | 2016-08-24 | 2018-08-14 | 黄山工业泵制造有限公司 | A kind of three screw rods using circular arc modified tooth profile |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |