CN107061260A - A kind of three screw pump based on phonon crystal rotor - Google Patents
A kind of three screw pump based on phonon crystal rotor Download PDFInfo
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- CN107061260A CN107061260A CN201710505830.3A CN201710505830A CN107061260A CN 107061260 A CN107061260 A CN 107061260A CN 201710505830 A CN201710505830 A CN 201710505830A CN 107061260 A CN107061260 A CN 107061260A
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- phonon crystal
- screw
- screw pump
- inner core
- intermediate layer
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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
- F04C2/165—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 having more than two rotary pistons with parallel axes
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
A kind of three screw pump based on phonon crystal rotor, including three screw pump；The three screw pump, which has in the driven screw of two sizes, construction and material all same, driven screw matrix, arrangement phonon crystal inner core in axially distributed hollow cavity, hollow cavity；The phonon crystal inner core includes core body, intermediate layer and outer layer；Wherein, intermediate layer parcel core body, outer layer covers intermediate layer；The phonon crystal inner core is cylinder, and phonon crystal inner core cross sectional radius is the 25%~50% of driven screw matrix root radius.The axial length of affiliated hollow cavity is more than the 2/3 of driven screw matrix axial length.Phonon crystal inner core in the hollow cavity has multistage.The present invention by by phonon crystal be applied to three screw pump from screw rod, can effective attenuation three screw pump twisting vibration during from screw rod from screw rod is driven by driving screw.
Description
Technical field
The invention belongs to screw pump technology field, and in particular to a kind of three screw pump based on phonon crystal rotor.
Background technology
Three screw pump is small with its pressure, and the characteristic such as flow trim is increasingly favored by market, wide with three screw pump
The general vibration noise problem for being applied to produce in industry-by-industry, three screw pump operation process is increasingly taken seriously.Three screw pump
Twisting vibration is difficult to weaken, the problem developed gradually as three screw pump.By literature search, three screw pump vibration noise suppresses
Related document is less, and especially the solution in terms of shortage reduction three screw pump twisting vibration is less.
Phonon crystal is the new structure functional material of a kind of elastic constant and distribution density cycle, it is contemplated that phonon crystal
The characteristic exclusive to vibration noise, is widely used in contemporary noise control engineering technology.Therefore, the present invention should by sound insulating material
Three screw pump is used, for realizing three screw pump vibration and noise reducing.
The content of the invention
It is an object of the invention to provide it is a kind of can weaken three screw pump twisting vibration based on phonon crystal rotor
Three screw pump.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：Including three screw pump；The three screw pump has
There is axially distributed hollow cavity in the driven screw of two sizes, construction and material all same, driven screw matrix, it is empty
Arrangement phonon crystal inner core in chambers of the heart body；The phonon crystal inner core includes core body, intermediate layer and outer layer；Wherein, intermediate layer is wrapped
Wrap up in core body, outer layer covers intermediate layer；
The present invention can also include：
1. described in phonon crystal inner core be cylinder, phonon crystal inner core cross sectional radius is driven screw matrix root circle half
The 25%~50% of footpath.
2. described in hollow cavity axial length be more than driven screw matrix axial length 2/3.
3. described in phonon crystal inner core in hollow cavity be segmental structure.
4. described in core body in phonon crystal inner core be segmental structure, the density of material of adjacent core body is different.
5. described in intermediate layer in phonon crystal inner core be segmental structure, the density of material in adjacent intermediate layer is different.
6. described in outer layer in phonon crystal inner core be segmental structure, the density of material of adjacent outward layer is different.
The device have the advantages that：
There is phononic band gap as a kind of novel sound material in phonon crystal.Fall the elastic wave in the range of forbidden band to exist
Decay that can be strong when being propagated in phonon crystal, its attenuation degree is far longer than the predicted value of mass density theorem.The present invention is logical
Cross by phonon crystal be applied to three screw pump from screw rod, can effective attenuation three screw pump by driving screw drive from screw rod when from
The twisting vibration of screw rod.
Brief description of the drawings
Fig. 1 is phonon crystal three screw pump outside schematic diagram of the invention.
Fig. 2 is phonon crystal three screw pump principal and subordinate screw rod cooperation schematic diagram of the present invention.
A kind of three screw pump driven screw main sectional view for phonon crystal that Fig. 3 designs for the present invention.
Fig. 4 is phonon crystal core arrangement schematic diagram of the invention.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that preferred reality described herein
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.The present invention provides one kind and is used in phonon crystal
Opened one's minds on three screw pump vibration and noise reducing.
A kind of three screw pump based on phonon crystal rotor, including driving screw rod 1, the first driven screw 2, the first end cap 3,
Second driven screw 5, the second end cap 4, as shown in Figure 2.
First driven screw 2 and the second driven screw 5 have axially distributed hollow cavity, and hollow cavity is provided with
Phonon crystal inner core 6, as shown in Figure 3.
When first driven screw 2 and the second driven screw 5 are not completely hollow, the axial length of hollow cavity is greater than the
The opening of 2/3 and hollow cavity of one driven screw length thereof is positioned at one end of driven screw, in order to phonon crystal inner core
Install.In the case where ensureing the rigidity of driven screw matrix 5, the action effect of largest optimization phonon crystal inner core 6.Sound in hollow cavity
Sub- crystal inner core 6 be segmental structure, preferably 3 sections, to lift effectiveness in vibration suppression.
Phonon crystal inner core 6 includes core body 7, intermediate layer 8 and outer layer 9；The most inner side of phonon crystal inner core 6 is core body 7, core
It is intermediate layer 8 on the outside of body 7, the peripheral disposition outer layer 9 of intermediate layer 8, as shown in Figure 4.The selection model of the phonon crystal inner core radius
Enclose for the 25%~50% of driven screw matrix root radius.
The core body 7 is solid and Density Distribution is uniform；The radius of core body 7 is preferably the 1/3 of the radius of phonon crystal inner core 6；
Matrix in the phonon crystal inner core is divided into 2~5 sections vertically, and the adjacent density of core body 7 is different, to lift effectiveness in vibration suppression.
The material of core body 7 of the present invention is resin, preferably epoxy resin.
The intermediate layer 8 is uniformly wrapped in the outside of matrix and Density Distribution is uniform；Centre in the phonon crystal inner core
Layer is divided into 2~5 sections vertically, and the adjacent density of intermediate layer 8 is different, to lift effectiveness in vibration suppression.The material in intermediate layer 8 of the present invention is
Metal level, preferably lead.
The uniform envelope of outer layer 9 is in the outside in intermediate layer 8, and the Density Distribution of outer layer 9 is uniform；In the phonon crystal inner core
Intermediate layer be divided into 2~5 sections vertically, the adjacent density of outer layer 9 is different, to lift effectiveness in vibration suppression.Outer layer 9 of the present invention is rubber
Layer, preferably rubber, and with netted envelope shape.
Above-mentioned material parameter is as shown in table 1.
The material parameter of table 1
| Material | Density p (kg/m3) | Modulus of shearing μ (Pa) | Poisson's ratio |
| Epoxy resin | 1180 | 1.59×109 | 0.37 |
| Rubber | 1300 | 3.4×105 | 0.47 |
| Lead | 11600 | 1.49×1010 | 0.37 |
It is brilliant by the incoming phonon of end cap when twisting vibration excitation effect is delivered on driven screw matrix by driving screw rod
Internal core 6, under phonon crystal effect so that vibration excitation is obtained in certain frequency band range phonon crystal twisting vibration band gap
To decay.
Need to consider the factors such as material, the size of phonon crystal inner core to phonon crystal three screw pump damping during specific implementation
Anti-acoustic capability influences.For example from different materials constitute phonon crystal inner core, be not limited to resin, metal, rubber these three
Material；The connected mode between the phonon crystal inner core number of plies is adjusted, rivet interlacement mode is relatively interference fitted, the energy of its damping noise reduction
Power is stronger；Change the hop count of phonon crystal inner core, can be redesigned according to real needs.
There is phononic band gap as a kind of novel sound material in phonon crystal.Fall the elastic wave in the range of forbidden band to exist
Decay that can be strong when being propagated in phonon crystal, its attenuation degree is far longer than the predicted value of mass density theorem.The present invention is logical
Cross by phonon crystal be applied to three screw pump from screw rod, can effective attenuation three screw pump by driving screw drive from screw rod when from
The twisting vibration of screw rod.
Claims (7)
1. a kind of three screw pump based on phonon crystal rotor, including three screw pump, it is characterised in that the three screw pump has
There is axially distributed hollow cavity in the driven screw of two sizes, construction and material all same, driven screw matrix, it is empty
Arrangement phonon crystal inner core in chambers of the heart body；The phonon crystal inner core includes core body, intermediate layer and outer layer；Wherein, intermediate layer is wrapped
Wrap up in core body, outer layer covers intermediate layer.
2. a kind of three screw pump based on phonon crystal rotor as claimed in claim 1, it is characterised in that the phonon crystal
Inner core is cylinder, and phonon crystal inner core cross sectional radius is the 25%~50% of driven screw matrix root radius.
3. a kind of three screw pump based on phonon crystal rotor as claimed in claim 2, it is characterised in that the hollow cavity
Axial length be more than driven screw matrix axial length 2/3.
4. a kind of three screw pump based on phonon crystal rotor as claimed in claim 3, it is characterised in that the hollow cavity
Interior phonon crystal inner core is segmental structure.
5. a kind of three screw pump based on phonon crystal rotor as claimed in claim 4, it is characterised in that described that there is segmentation
Core body in the phonon crystal inner core of structure is segmental structure, and the density of material of adjacent core body is different.
6. a kind of three screw pump based on phonon crystal rotor as claimed in claim 4, it is characterised in that described that there is segmentation
Core body and intermediate layer in the phonon crystal inner core of structure are segmental structure, and the density of material of adjacent core body is different, adjacent centre
The density of material of layer is different.
7. a kind of three screw pump based on phonon crystal rotor as claimed in claim 4, it is characterised in that described that there is segmentation
Core body, intermediate layer and outer layer in the phonon crystal inner core of structure are segmental structure, and the density of material of adjacent core body is different, adjacent
The density of material in intermediate layer is different, and the density of material of adjacent outward layer is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505830.3A CN107061260B (en) | 2017-06-28 | 2017-06-28 | A kind of three screw pump based on phonon crystal rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505830.3A CN107061260B (en) | 2017-06-28 | 2017-06-28 | A kind of three screw pump based on phonon crystal rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061260A true CN107061260A (en) | 2017-08-18 |
| CN107061260B CN107061260B (en) | 2019-06-14 |
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| CN201710505830.3A Active CN107061260B (en) | 2017-06-28 | 2017-06-28 | A kind of three screw pump based on phonon crystal rotor |
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Citations (12)
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|---|---|---|---|---|
| JP2002055239A (en) * | 2000-08-09 | 2002-02-20 | Mitsubishi Cable Ind Ltd | Photonic crystal fiber and its manufacturing method |
| US6711200B1 (en) * | 1999-09-07 | 2004-03-23 | California Institute Of Technology | Tuneable photonic crystal lasers and a method of fabricating the same |
| US20100028898A1 (en) * | 2008-08-04 | 2010-02-04 | Consiglio Nazionale Delle Ricerche | Method of identifying a target analyte using photonic crystal resonators, and related device |
| CN102620808A (en) * | 2012-03-23 | 2012-08-01 | 哈尔滨工程大学 | Local resonance type phononic crystal filtering optical fiber hydrophone |
| CN102708852A (en) * | 2012-05-14 | 2012-10-03 | 北京交通大学 | Three-phase phonon functional material structure comprising comb-type interlayer and manufacturing method |
| CN103062362A (en) * | 2013-01-11 | 2013-04-24 | 哈尔滨工程大学 | Quasi-Bragg phonon crystal damping gear |
| CN103899733A (en) * | 2014-04-02 | 2014-07-02 | 哈尔滨工程大学 | Vibration reduction gear with two-dimensional quasi-phonon crystals |
| CN103912755A (en) * | 2014-03-27 | 2014-07-09 | 中国船舶重工集团公司第七二五研究所 | Periodic structure damping for pipelines and processing method |
| CN204200999U (en) * | 2014-09-30 | 2015-03-11 | 陕西法士特齿轮有限责任公司 | A kind of phonon crystal vibration-reduction gear |
| CN104810014A (en) * | 2015-03-13 | 2015-07-29 | 哈尔滨工程大学 | Continuously-variable-impedance functionally graded material and homogenous medium periodic structure material |
| CN105422732A (en) * | 2015-12-09 | 2016-03-23 | 北京工业大学 | Composite damping vibration attenuation expansion rod structure for thin and long rotary shaft |
| CN105931628A (en) * | 2016-04-18 | 2016-09-07 | 西安建筑科技大学 | Discretized rubber layer photonic crystal shaft with low-frequency vibration-damping characteristics |
-
2017
- 2017-06-28 CN CN201710505830.3A patent/CN107061260B/en active Active
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| US6711200B1 (en) * | 1999-09-07 | 2004-03-23 | California Institute Of Technology | Tuneable photonic crystal lasers and a method of fabricating the same |
| JP2002055239A (en) * | 2000-08-09 | 2002-02-20 | Mitsubishi Cable Ind Ltd | Photonic crystal fiber and its manufacturing method |
| US20100028898A1 (en) * | 2008-08-04 | 2010-02-04 | Consiglio Nazionale Delle Ricerche | Method of identifying a target analyte using photonic crystal resonators, and related device |
| CN102620808A (en) * | 2012-03-23 | 2012-08-01 | 哈尔滨工程大学 | Local resonance type phononic crystal filtering optical fiber hydrophone |
| CN102708852A (en) * | 2012-05-14 | 2012-10-03 | 北京交通大学 | Three-phase phonon functional material structure comprising comb-type interlayer and manufacturing method |
| CN103062362A (en) * | 2013-01-11 | 2013-04-24 | 哈尔滨工程大学 | Quasi-Bragg phonon crystal damping gear |
| CN103912755A (en) * | 2014-03-27 | 2014-07-09 | 中国船舶重工集团公司第七二五研究所 | Periodic structure damping for pipelines and processing method |
| CN103899733A (en) * | 2014-04-02 | 2014-07-02 | 哈尔滨工程大学 | Vibration reduction gear with two-dimensional quasi-phonon crystals |
| CN204200999U (en) * | 2014-09-30 | 2015-03-11 | 陕西法士特齿轮有限责任公司 | A kind of phonon crystal vibration-reduction gear |
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| CN105422732A (en) * | 2015-12-09 | 2016-03-23 | 北京工业大学 | Composite damping vibration attenuation expansion rod structure for thin and long rotary shaft |
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| CN107061260B (en) | 2019-06-14 |
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