CN108160474A - A kind of compound curved surface type sorting screen - Google Patents
A kind of compound curved surface type sorting screen Download PDFInfo
- Publication number
- CN108160474A CN108160474A CN201810235945.XA CN201810235945A CN108160474A CN 108160474 A CN108160474 A CN 108160474A CN 201810235945 A CN201810235945 A CN 201810235945A CN 108160474 A CN108160474 A CN 108160474A
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- CN
- China
- Prior art keywords
- curved surface
- sorting screen
- compound curved
- surface type
- type sorting
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4618—Manufacturing of screening surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
A kind of compound curved surface type sorting screen belongs to agricultural machinery；The longitudinal length L of the compound curved surface type sorting screen1For 1000-1800mm, lateral length L2It is made respectively by following curvilinear equation for 600-1500mm, the Vertical Curve RP and horizontal curve PN for forming the compound curved surface type sorting screen：In formula：Independent variable xRPValue range be 0 to L1。In formula：Independent variable xPNValue range beThis sieve effectively improves screening operation performance, reduces grain loss, realizes and has achieved the effect that fine screening, structure novel, simple, rationally.
Description
Technical field
The invention belongs to agricultural machinery, and in particular to the compound curved surface type sorting screen that a kind of grain cleaning uses.
Background technology
Deficiency and defect in terms of due to structure design, sorting screen is mostly flat used by used grain cleaning mechanism
Face formula, and shape is single on the horizontal stroke of compass screen surface, longitudinal direction.The remaining operation of grain clear removal of impurities is being carried out in use, since material is sieving
The horizontal, distribution of longitudinal direction different location and kinetic characteristic are different on face, cause compass screen surface poor to the adaptability of material, both lateral sides
Seed accumulation is easily caused, causes that cereal and miscellaneous remaining separating effect are undesirable, and operating efficiency is low, miscellaneous effect and quality need to be carried clearly
It is high.
Invention content
The purpose of the present invention passes through simulation analysis and numerical Analysis aiming at the above-mentioned problems of the prior art
Method designs a kind of compound curved surface type sorting screen, with reach solve screening operation during compass screen surface it is poor to the adaptability of material,
Improve the purpose of clear miscellaneous effect and operation quality.
The purpose of the present invention is realized by following scheme:A kind of compound curved surface type sorting screen, the compound curved surface type are clear
Select the longitudinal length L of sieve1For 1000-1800mm, lateral length L2For 600-1500mm；The compound curved surface type is formed to clean
The Vertical Curve RP and horizontal curve PN of sieve are made respectively by following two sections of curvilinear equations：
In formula：Independent variable xRPValue range be 0 to L1。
In formula：Independent variable xPNValue range beExtremely
Vertical Curve RP main functions are for the material distribution of different location and kinetic characteristic on compass screen surface longitudinal direction
Different problems improve adaptability of the compass screen surface to material, realize that compass screen surface front end material is fully shared on compass screen surface, profit in the middle part of compass screen surface
It is sieved thoroughly in seed, compass screen surface rear end is conducive to the purpose that miscellaneous remaining throwing goes out cleaning room, reaches the operation effectiveness finely sieved；Horizontal curve
The main function of PN is to prevent seed from being accumulated in compass screen surface both lateral sides, reduces grain loss, improves sieve performance.
The beneficial effects of the invention are as follows：Sorting screen screening operation performance is effectively improved, realize and has reached fine screening
Effect.
Description of the drawings
Fig. 1 is a kind of compound curved surface type sorting screen overall structure schematic three dimensional views.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.A kind of compound curved surface type sorting screen, it is described multiple
Close the longitudinal length L of curved face type sorting screen1For 1000-1800mm, lateral length L2For 600-1500mm；It forms described compound
The Vertical Curve RP and horizontal curve PN of curved surface sorting screen are made respectively by following two sections of curvilinear equations：
In formula：Independent variable xRPValue range be 0 to L1。
In formula：Independent variable xPNValue range
ForExtremely
The compound curved surface type sorting screen is wire gauze sieve.
The present invention is by sieving the research of principle and the application of traditional sorting screen surface, existing to material in screening process
The summary of the distribution of different location and kinetic characteristic difference and seed compass screen surface both sides are accumulated the problems such as, is adopted on compass screen surface horizontal direction
The governing equation of curved surface two composite curves of sieve is obtained with numerical computation method, Gas-solid Coupling means (CFD-DEM) is utilized to simulate
The screening operation process of cereal in cleaning plant determines the parameter of compass screen surface governing equation, uses experimental design software (Design-
Expert parameter optimization) is carried out, obtains its two composite curves RP, PN respectively.A large amount of simulation comparison experiments and rack are to having a competition
It tests and shows that compound curved surface type sorting screen realizes compass screen surface front end material and fully shares on compass screen surface, is saturating conducive to seed in the middle part of compass screen surface
Sieve, compass screen surface rear end are conducive to the purpose that miscellaneous remaining throwing goes out cleaning room, reach the operation effectiveness finely sieved, and effectively reduce screening
The grain loss rate of device, improves grain cleaning rate, meets the related transaction capabilities requirement of cleaning plant.
By Gas-solid Coupling simulation comparison, experiments have shown that, compound curved surface type sorting screen effectively reduces the seed of cleaning plant
Loss late, and the clean rate of seed is improved, the grain loss rate than conventional planar wire gauze sieve reduces 0.47%, seed cleaning
Degree increases 18.3%；Grain loss rate than conventional planar shell sieve reduces 3.3%, and grain cleaning rate increases
7.22%.Subsequent rig test result of cleaning coincide, therefore l-G simulation test and bench test are tested substantially with Simulation results
The grain loss rate for having demonstrate,proved compound curved surface type sorting screen is smaller, and grain cleaning rate is higher, and the screening operation for meeting cleaning plant will
It asks.
Claims (2)
1. a kind of compound curved surface type sorting screen, it is characterised in that：The longitudinal length L of the compound curved surface type sorting screen1For 1000-
1800mm, lateral length L2For 600-1500mm；Form the Vertical Curve RP of the compound curved surface sorting screen and horizontal curve PN
It is made respectively by following two sections of curvilinear equations：In formula：Independent variable xRPTake
Value ranging from 0 to L1。
In formula：Independent variable xPNValue range beExtremely
2. a kind of compound curved surface type sorting screen according to claim 1, it is characterised in that：The compound curved surface type sorting screen
For wire gauze sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235945.XA CN108160474A (en) | 2018-03-21 | 2018-03-21 | A kind of compound curved surface type sorting screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235945.XA CN108160474A (en) | 2018-03-21 | 2018-03-21 | A kind of compound curved surface type sorting screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108160474A true CN108160474A (en) | 2018-06-15 |
Family
ID=62512172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810235945.XA Pending CN108160474A (en) | 2018-03-21 | 2018-03-21 | A kind of compound curved surface type sorting screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108160474A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282822A (en) * | 2020-02-17 | 2020-06-16 | 中国农业大学 | Reciprocating arc line combined corn cleaning device |
| CN112588582A (en) * | 2020-11-03 | 2021-04-02 | 东北农业大学 | Composite wave sieve imitating earthworm body surface structure and motion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU867434A1 (en) * | 1979-09-12 | 1981-09-30 | Институт Геотехнической Механики Ан Усср | Riddle for screen |
| CN2368873Y (en) * | 1998-08-24 | 2000-03-15 | 华南理工大学 | Vibration pulp purifying and concentrating screen |
| DE102006008444B4 (en) * | 2005-04-22 | 2010-08-05 | Andreas Klotz | Perforated plate for components and systems for processing pourable parts |
| CN202021151U (en) * | 2011-01-19 | 2011-11-02 | 伊建昌 | Concave-convex screen mesh |
| CN104174586A (en) * | 2014-08-01 | 2014-12-03 | 崔晓峰 | Wave type screening plate |
-
2018
- 2018-03-21 CN CN201810235945.XA patent/CN108160474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU867434A1 (en) * | 1979-09-12 | 1981-09-30 | Институт Геотехнической Механики Ан Усср | Riddle for screen |
| CN2368873Y (en) * | 1998-08-24 | 2000-03-15 | 华南理工大学 | Vibration pulp purifying and concentrating screen |
| DE102006008444B4 (en) * | 2005-04-22 | 2010-08-05 | Andreas Klotz | Perforated plate for components and systems for processing pourable parts |
| CN202021151U (en) * | 2011-01-19 | 2011-11-02 | 伊建昌 | Concave-convex screen mesh |
| CN104174586A (en) * | 2014-08-01 | 2014-12-03 | 崔晓峰 | Wave type screening plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282822A (en) * | 2020-02-17 | 2020-06-16 | 中国农业大学 | Reciprocating arc line combined corn cleaning device |
| CN111282822B (en) * | 2020-02-17 | 2021-05-07 | 中国农业大学 | Reciprocating arc line combined corn cleaning device |
| CN112588582A (en) * | 2020-11-03 | 2021-04-02 | 东北农业大学 | Composite wave sieve imitating earthworm body surface structure and motion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |
|
| RJ01 | Rejection of invention patent application after publication |