CN112539171A - Two-head three-head glue-applying double screw - Google Patents
Two-head three-head glue-applying double screw Download PDFInfo
- Publication number
- CN112539171A CN112539171A CN202011427392.1A CN202011427392A CN112539171A CN 112539171 A CN112539171 A CN 112539171A CN 202011427392 A CN202011427392 A CN 202011427392A CN 112539171 A CN112539171 A CN 112539171A
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- Prior art keywords
- screw
- head
- double
- driven
- pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Abstract
A double-head and three-head glue-applying double-screw belongs to the technical field of double-screw pump equipment; the invention adopts the driving screw as the two-head screw and the driven screw as the three-head screw, which has the maximum advantage of large flow, the flow is more than 2 times of that of a single-head double-screw pump under the same condition, and the volume efficiency is as excellent as that of the single-head double-screw pump under the condition that the pump has other performances such as self-priming height and the lift is below 150 meters; in the working process, the driving screw rod and the driven screw rod are completely and continuously meshed, and the driving screw rod and the driven screw rod are of a real sealed type molded line; the molded lines are completely and continuously meshed, so that the pump is more stable in the working process; the Archimedes spiral lines f1-g1 and f2-g2 at the top ends of the driving screw and the driven screw can generate wedge-shaped fluid with the inner wall of the lining sleeve of the existing pump in the working process so as to generate centripetal force N, so that the outer ring rubber tends to be separated from the inner wall of the lining sleeve, the friction between the screw and the inner wall of the lining sleeve can be reduced, the service life of a rotor is prolonged, and the overall efficiency of the pump is improved.
Description
Technical Field
The invention belongs to the technical field of double-screw pump equipment, and particularly relates to a double-head and three-head glue-applying double screw.
Background
The double-screw pump is a positive displacement pump, and is characterized in that a pair of left and right screws with different rotation directions are matched with the inner wall of a sealing bush, a sealing cavity is gradually established in the rotation process of the screws, and the sealing cavity is continuously pushed to a discharge end along the axial direction from a suction end of the pump along with the rotation of the screws, so that a medium sealed in the sealing cavity is continuously discharged. The screw pump has the advantages of stable medium conveying, low turbulence of the pushed medium, weak pressure pulsation, small mechanical vibration, low noise and the like. The rubber-lined screw rod is manufactured by placing a metal framework into a rubber-lined forming die, injecting vulcanized rubber into the rubber-lined forming die, and forming the rubber-lined screw rod after shaping.
The existing metal screw has a single molded line and only consists of a pair of intermeshing epicycloids and involutes, so that the effect of complete sealing between the screw and the screw cannot be achieved when the double-screw pump operates, and the double-screw pump cannot operate unstably once the screw and the screw rotate and are not meshed.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art and provides a double-head and three-head glue-applying double screw.
The technical problem of the invention is mainly solved by the following technical scheme: a double-head three-head gluing double-screw comprises a driving screw and a driven screw, wherein the driving screw and the driven screw are meshed with each other, the driving screw and the driven screw are both metal screws, shaft holes penetrating through two ends are formed in the axial centers of the driving screw and the driven screw, the driving screw is a double-head screw, the driven screw is a three-head screw, two Archimedes spiral line segments a1-b1 and f1-g1 are arranged at two ends of a molded line in the driving screw, a d1-e1 gradually-opening line segment and a c1-d1 outward swinging line segment are arranged in the middle of the molded line in the driving screw, the d1-e1 gradually-opening line segment is connected with a c1-d1 outward swinging line segment through a d1 point, a curve segment between the a1-b1 Archimedes spiral line segment and the c1-d1 outward swinging line segment is b1-c1 parabola, and the f 8653-g 1 and f 867-d 8672 e1 gradually-b parabola segment, the line segment of a model a2-g2 in the driven screw is a conjugate curve with the line segment of a model a1-g1 in the driving screw, and the outer sides of the driving screw and the driven screw in the axial direction are coated with rubber layers.
Preferably, the driving screw and the driven screw have the same outer diameter.
The invention has the following beneficial effects:
1. the driving screw is a two-head screw, the driven screw is a three-head screw, and the outer diameters of the driving screw and the driven screw are the same (the outer diameters of the driving screw and the driven screw of the common three-head screw pump are different), so that the universal interchange effect of parts can be obtained in other double screws with the same specification, and the three-head screw pump further has the maximum advantage of large flow, wherein the flow is more than 2 times of that of a single-head double-screw pump under the same condition, and the volume efficiency is as excellent as that of the single-head double-screw pump under the condition that the pump has other performances such as self-suction height and;
2. in the working process, the driving screw rod and the driven screw rod are completely and continuously meshed, and the driving screw rod and the driven screw rod are of a real sealed type molded line;
3. the molded lines are completely and continuously meshed, so that the pump is more stable in the working process;
4. the Archimedes spiral lines f1-g1 and f2-g2 at the top ends of the driving screw and the driven screw can generate wedge-shaped fluid with the inner wall of the lining sleeve of the existing pump in the working process so as to generate centripetal force N, so that the outer ring rubber tends to be separated from the inner wall of the lining sleeve, the friction between the screw and the inner wall of the lining sleeve can be reduced, the service life of a rotor is prolonged, and the overall efficiency of the pump is improved.
Drawings
FIG. 1 is a schematic view of a profile structure of a driving screw and a driven screw according to the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic plan sectional view of the engagement of the driving screw and the driven screw according to the present invention;
FIG. 4 is an operational view of the present invention with respect to a prior art bushing wall;
fig. 5 is a schematic view of the overall appearance structure of the present invention.
In the figure: 1. a driving screw; 2. a driven screw; 3. a shaft hole; 4. an archimedean spiral segment; 5. gradually opening the line segment; 6. an outer swing line segment; 7. a segment of a parabola; 8. a rubber layer; 9. the liner wall is now available.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a double-head three-head glue-coated double screw comprises a driving screw and a driven screw, wherein the driving screw and the driven screw are mutually meshed, the driving screw and the driven screw are both metal screws, shaft holes with two ends penetrating through are formed in the axial centers of the driving screw and the driven screw, the driving screw is a double-head screw, the driven screw is a three-head screw, two ends of a molded line in the driving screw are a1-b1 and f1-g1 Archimedes screw sections, the middle of the molded line in the driving screw is a d1-e1 gradually-opened line section and a c1-d1 outward-swinging line section, the d1-e1 gradually-opened line section is connected with a c1-d1 outward swinging line section through a d1 point, a curve section between a1-b1 Archimedes screw line section and a c1-d1 outward swinging line section is a b1-c1 line section, the section of the f1-g1 Archimedes spiral and the section of d1-e1 are separated from each other by an e1-f1 parabolic section, the section of a2-g2 in the driven screw is a conjugate curve of the section of a1-g1 in the driving screw, and the outer sides of the driving screw and the driven screw in the axial direction are coated with rubber layers.
The outer diameters of the driving screw and the driven screw are the same; the effect of universal interchange of parts can be obtained in other double screws with the same specification.
The conjugate curve section of the driven screw and the driving screw is a2-b2, b2-c2, c2-d2, d2-e2, e2-f2 and f2-g 2.
The principle of the invention is as follows:
two Archimedes spiral line sections of a1-b1 and f1-g1 are added at the two ends of the molded line of the driving screw, and two parabolas of b1-c1 and e1-f1 are added between curves for transition in order to enable the whole molded line to be in smooth transition. The driven screw profile a2-g2 is the conjugate curve of the driving screw profile.
When the driving screw and the driven screw are installed in the conventional double-screw pump, shaft holes with two ends penetrating through are formed in the axial centers of the driving screw and the driven screw, and a transmission shaft of a fixed screw in the conventional double-screw pump is inserted into the shaft holes to be subjected to power transmission; the Archimedes spiral lines f1-g1 and f2-g2 at the top ends of the driving screw and the driven screw can generate wedge-shaped fluid with the inner wall of the lining sleeve of the existing pump in the working process so as to generate centripetal force N, so that the outer ring rubber tends to be separated from the inner wall of the lining sleeve, the friction between the screw and the inner wall of the lining sleeve can be reduced, the service life of a rotor is prolonged, and the overall efficiency of the pump is improved.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (2)
1. A double-head three-head glue-applying double screw comprises a driving screw and a driven screw, and is characterized in that the driving screw and the driven screw are mutually meshed, the driving screw and the driven screw are both metal screws, shaft holes penetrating through two ends are formed in the axial centers of the driving screw and the driven screw, the driving screw is a double-head screw, the driven screw is a three-head screw, two Archimedes spiral line segments of a1-b1 and f1-g1 are arranged at two ends of a molded line in the driving screw, a d1-e1 gradually-opening line segment and a c1-d1 outward swinging line segment are arranged in the middle of the molded line in the driving screw, the d1-e1 gradually opening line segment is connected with a c1-d1 outward swinging line segment through a d1 point, a curve segment between the a1-b1 Archimedes spiral line segment and a c1-d1 outward swinging line segment is a parabola 1-1 c, and the f 53-1 g parabola line segment is connected with a f 867-d 8658 outward swinging line segment The segment of a2-g2 in the driven screw is a conjugate curve of the segment of a1-g1 in the driving screw, and the driving screw and the driven screw are coated with rubber layers on the outer sides in the axial direction.
2. The double-headed and triple-headed glue-applying twin-screw according to claim 1, wherein the driving screw and the driven screw have the same outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427392.1A CN112539171B (en) | 2020-12-07 | 2020-12-07 | Two-head three-head glue-applying double screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011427392.1A CN112539171B (en) | 2020-12-07 | 2020-12-07 | Two-head three-head glue-applying double screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112539171A true CN112539171A (en) | 2021-03-23 |
| CN112539171B CN112539171B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011427392.1A Active CN112539171B (en) | 2020-12-07 | 2020-12-07 | Two-head three-head glue-applying double screw |
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| CN (1) | CN112539171B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240231A1 (en) * | 2022-06-10 | 2023-12-14 | Illinois Tool Works Inc. | Screw pump and its components |
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| CN1546865A (en) * | 2003-12-10 | 2004-11-17 | 浙江大学 | Approximate sealed dual head screw |
| US20050129561A1 (en) * | 2001-10-19 | 2005-06-16 | Heizer Charles K. | Gapless screw rotor device |
| CN1743678A (en) * | 2005-09-30 | 2006-03-08 | 浙江大学 | Screw profile for high flow high-pressure dual-screw pump |
| CN2861556Y (en) * | 2006-01-13 | 2007-01-24 | 浙江大学 | Screw tooth form of unequal-number of teeth unequal-radius double-screw pump |
| CN201301806Y (en) * | 2009-05-05 | 2009-09-02 | 重庆大学 | Large-flow high-pressure screw pump |
| CN101576079A (en) * | 2009-06-12 | 2009-11-11 | 天津泵业机械集团有限公司 | Screw gear form of double screw pump |
| CN102797673A (en) * | 2011-05-24 | 2012-11-28 | 重庆德衡科技有限公司 | Embedded combined tooth-shaped screw pump |
| CN203614393U (en) * | 2013-08-20 | 2014-05-28 | 天津君宇航天科技有限公司 | Pitch-varying screw rods of double-screw multiphase fluid mixing and transporting pump |
| CN104712553A (en) * | 2015-02-12 | 2015-06-17 | 溧阳市超强链条制造有限公司 | Three-screw pump |
| CN105697363A (en) * | 2016-03-11 | 2016-06-22 | 天津华科螺杆泵技术有限公司 | Asymmetric-tooth-shaped two-end spiral screw with involute force transmission side |
| CN106194717A (en) * | 2016-08-31 | 2016-12-07 | 浙江威隆机械科技有限公司 | A kind of rubber screw rod molded lines of rotor being applicable to spiral displacement pump |
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-
2020
- 2020-12-07 CN CN202011427392.1A patent/CN112539171B/en active Active
Patent Citations (12)
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|---|---|---|---|---|
| US20050129561A1 (en) * | 2001-10-19 | 2005-06-16 | Heizer Charles K. | Gapless screw rotor device |
| CN1546865A (en) * | 2003-12-10 | 2004-11-17 | 浙江大学 | Approximate sealed dual head screw |
| CN1743678A (en) * | 2005-09-30 | 2006-03-08 | 浙江大学 | Screw profile for high flow high-pressure dual-screw pump |
| CN2861556Y (en) * | 2006-01-13 | 2007-01-24 | 浙江大学 | Screw tooth form of unequal-number of teeth unequal-radius double-screw pump |
| CN201301806Y (en) * | 2009-05-05 | 2009-09-02 | 重庆大学 | Large-flow high-pressure screw pump |
| CN101576079A (en) * | 2009-06-12 | 2009-11-11 | 天津泵业机械集团有限公司 | Screw gear form of double screw pump |
| CN102797673A (en) * | 2011-05-24 | 2012-11-28 | 重庆德衡科技有限公司 | Embedded combined tooth-shaped screw pump |
| CN203614393U (en) * | 2013-08-20 | 2014-05-28 | 天津君宇航天科技有限公司 | Pitch-varying screw rods of double-screw multiphase fluid mixing and transporting pump |
| CN104712553A (en) * | 2015-02-12 | 2015-06-17 | 溧阳市超强链条制造有限公司 | Three-screw pump |
| CN105697363A (en) * | 2016-03-11 | 2016-06-22 | 天津华科螺杆泵技术有限公司 | Asymmetric-tooth-shaped two-end spiral screw with involute force transmission side |
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| CN110230592A (en) * | 2019-07-30 | 2019-09-13 | 浙江博大泵业有限公司 | A kind of Quimby pump that metal screw is used with the pairing of line with rubber screw rod |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023240231A1 (en) * | 2022-06-10 | 2023-12-14 | Illinois Tool Works Inc. | Screw pump and its components |
| FR3136523A1 (en) * | 2022-06-10 | 2023-12-15 | Illinois Tool Works | SCREW PUMP AND ITS COMPONENTS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112539171B (en) | 2022-11-11 |
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Denomination of invention: A two head three head adhesive double screw Effective date of registration: 20230614 Granted publication date: 20221111 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Shaoxing Shengzhou Small and Micro Enterprise Sub branch Pledgor: ZHEJIANG BODA PUMP Co.,Ltd. Registration number: Y2023980044048 |