CN104923475A - Guided sieve tray sorting opium poppy shell fragments and stalk, and screening method thereof - Google Patents

Guided sieve tray sorting opium poppy shell fragments and stalk, and screening method thereof Download PDF

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Publication number
CN104923475A
CN104923475A CN201510375142.0A CN201510375142A CN104923475A CN 104923475 A CN104923475 A CN 104923475A CN 201510375142 A CN201510375142 A CN 201510375142A CN 104923475 A CN104923475 A CN 104923475A
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CN
China
Prior art keywords
sieve
opium poppy
shell fragments
stem stalk
sieve plate
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.)
Pending
Application number
CN201510375142.0A
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Chinese (zh)
Inventor
罗锡文
向阳
曾山
杨文武
臧英
周志艳
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South China Agricultural University
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South China Agricultural University
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Publication date
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Priority to CN201510375142.0A priority Critical patent/CN104923475A/en
Publication of CN104923475A publication Critical patent/CN104923475A/en
Pending legal-status Critical Current

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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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • 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
    • 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
    • B07B1/4645—Screening surfaces built up of modular elements

Abstract

The invention discloses a guided sieve tray sorting opium poppy shell fragments and stalks. The long edge direction of a sieve plate is a material forward direction. The edge of the rear part of the sieve plate and two long edges are provided with stopping edges. The sieve plate is provided with a plurality of transverse parallel strip-type holes. Sieve pore strip boards are in a rectangular shape. The sieve pore strip board is provided with a plurality of rectangular sieve pores. The sieve pore strip boards are in a ladder shape. The lateral dimension A of the rectangular sieve pore is larger than the longitudinal dimension B along the material forward direction. A plurality of guiding strips are arranged in the sieve plate at equal interval in a parallel manner along the material forward direction. A plurality of material channels are formed among the guiding strips. Each sieve pore strip board is installed in the strip-type hole of the sieve plate, and the distance between the guiding strips is equal to the lateral dimension A of the rectangular sieve pore of the sieve pore strip board. The invention also provides a screening method for the guided sieve tray sorting opium poppy shell fragments and stalks. The sieve tray has guiding effect on stalks, and using the characteristic of the length direction of the stalks, the stalks are screened out.

Description

The linde sieve tray of sorting opium poppy shell fragments and stem stalk and screening technique thereof
Technical field
The present invention relates to the equipment of sorting opium poppy shell fragments and stem stalk, be specifically related to linde sieve tray and the screening technique thereof of a kind of sorting opium poppy shell fragments and stem stalk.
Background technology
The opium poppy dried fruit product of mechanized harvest still containing a certain amount of stem stalk, needs to be separated from shell fragments by stem stalk by screening installation after fragmentation.Due to shell fragments out-of-shape, traditional mesh sieve plate is adopted to carry out sorting often poor effect.If mesh diameter is excessive, the cane that partial-length is less can improve the percentage of impurity of product together with opium poppy shell fragments through sieve plate; If mesh diameter is too small, larger-size opium poppy shell fragments cannot be screened out with stem stalk through sieve plate, thus improves the sieve loss(es) rate of opium poppy shell fragments.Therefore, be difficult in practical application ensure lower percentage of impurity and loss late simultaneously.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides the linde sieve tray of a kind of sorting opium poppy shell fragments and stem stalk, sieve plate has guide effect to stem stalk, utilizes the feature in culm length direction to be screened.
Present invention also offers the screening technique of the linde sieve tray of a kind of sorting opium poppy shell fragments and stem stalk.
The scheme that the present invention solves the problems of the technologies described above is as follows:
The linde sieve tray of sorting opium poppy shell fragments and stem stalk, comprises sieve plate, multiple sieve aperture batten and multiple gib block,
Described sieve plate is rectangle, and the long side direction of sieve plate is line direction before material, and sieve plate rearward edges and edge, two long limits are provided with and stop limit, and sieve plate has multiple horizontal parallel bar hole;
Described sieve aperture batten is rectangle, sieve aperture batten has multiple rectangle sieve aperture, sieve aperture batten presents ladder-shaped, and the lateral dimension A of rectangle sieve aperture is greater than the longitudinal size B of line direction before material, longitudinal size B is 20mm-25mm, and the ratio of longitudinal size B and lateral dimension A is 1:2 ~ 1:3;
Multiple described gib block is arranged in sieve plate along line direction parallel equidistant before material, multiple material channel is formed between gib block, described in each, sieve aperture batten is arranged in the bar hole of sieve plate, and the spacing between gib block equals the lateral dimension A of the rectangle sieve aperture of sieve aperture batten.
Described sieve aperture batten and gib block are connected by screw.
The below of described sieve plate is provided with multiple horizontal parallel angle steel, and angle steel, sieve plate and gib block are connected by screw.
The screening technique of above-mentioned sorting opium poppy shell fragments and the linde sieve tray of stem stalk, described linde sieve tray is installed on linear vibrating screen, open linear vibrating screen, material is poured into toward linde sieve tray from sieve plate rear, material is the mixture of opium poppy shell fragments and stem stalk, opium poppy shell chip size is different and be irregularly shaped, in weight, the full-size of opium poppy shell fragments of more than 95% is less than 30mm, in weight, the length of stem stalk of more than 95% concentrates on 50-120mm scope, material is distributed in the material channel between each gib block under effect of vibration, under effect of vibration, stem stalk is parallel or nearly parallel to gib block and moves ahead, the end of linde sieve tray exports stem stalk, gib block does not have guide effect to opium poppy shell fragments, under effect of vibration, opium poppy shell fragments drops through rectangle sieve aperture.
The present invention has following advantage relative to prior art:
1. stem stalk reduces through property: because stem stalk is large in lengthwise dimension, therefore when by material channel, must pass through by the direction being parallel or nearly parallel to gib block under gib block effect, and the longitudinal size B of rectangle sieve aperture is less in the direction in which, cane is difficult to through rectangle sieve aperture.
2. opium poppy shell fragments improves through property: gib block does not have guide effect for opium poppy shell fragments, therefore opium poppy shell fragments is not having certain directionality through passage, likely passes rectangle sieve aperture when a direction size of opium poppy shell fragments is less than lateral dimension A.After rectangle sieve aperture multiple in material channel, opium poppy shell fragments almost all tilts from rectangle sieve aperture and drops.
3. without passing blind area: material channel width is identical with rectangular mesh screen hole width, and material necessarily passes rectangle sieve aperture, does not therefore exist through blind area.
Accompanying drawing explanation
Fig. 1 is the stereogram of sieve plate.
Fig. 2 is the stereogram of sieve aperture batten.
Fig. 3 is the front view of the linde sieve tray of sorting opium poppy shell fragments and stem stalk.
Fig. 4 is the rearview of Fig. 3.
Fig. 5 is the stereogram of Fig. 3.
Fig. 6 is the curve map of stem stalk bar length and percent of pass.
Fig. 7 is the curve map of longitudinal size B and percent of pass.
Fig. 8 is the mixing percent of pass column diagram of stem stalk under different longitudinal size B condition.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Sorting opium poppy shell fragments as Figure 1-Figure 5 and the linde sieve tray of stem stalk, comprise sieve plate 1,8 sieve aperture battens 2 and 9 gib blocks 3, sieve plate 1 is rectangle, the long side direction of sieve plate 1 is line direction before material, sieve plate 1 rearward edges and edge, two long limits are provided with and stop limit 4, and sieve plate 1 has the parallel bar hole 5 of 8 transverse directions; Sieve aperture batten 2 is rectangle, and sieve aperture batten 2 has 8 rectangle sieve apertures 6, and sieve aperture batten 2 presents ladder-shaped, and the lateral dimension A of rectangle sieve aperture 2 is greater than the longitudinal size B of line direction before material; 9 gib blocks 3 are arranged in sieve plate 1 along line direction parallel equidistant before material, 8 material channels are formed between gib block 3, each sieve aperture batten 2 is arranged in the bar hole 5 of sieve plate 1, and the spacing between gib block 3 equals the lateral dimension A of the rectangle sieve aperture 6 of sieve aperture batten 2.The lateral dimension A of the rectangle sieve aperture 6 of sieve aperture batten 2 is 60mm, rectangle sieve aperture 6 be 25mm, A and B along the longitudinal size B of line direction before material ratio is 12:5.Sieve aperture batten 2 and gib block 3 are connected by screw.The below of sieve plate 1 is provided with the parallel angle steel 7 of 11 transverse directions, and angle steel 7, sieve plate 1 are connected by screw with gib block 3.The effect of angle steel 7 is the intensity improving sieve plate 1.
The screening technique of above-mentioned sorting opium poppy shell fragments and the linde sieve tray of stem stalk, described linde sieve tray is installed on linear vibrating screen, open linear vibrating screen, material is poured into toward linde sieve tray from sieve plate 1 rear, material is the mixture of opium poppy shell fragments and stem stalk, opium poppy shell chip size is different and be irregularly shaped, in weight, the full-size of opium poppy shell fragments of more than 95% is less than 30mm, in weight, the length of stem stalk of more than 95% concentrates on 50-120mm scope, material is distributed in the material channel between each gib block 3 under effect of vibration, under effect of vibration, stem stalk is parallel or nearly parallel to gib block 3 and moves ahead, the end of linde sieve tray exports stem stalk, gib block 3 pairs of opium poppy shell fragments do not have guide effect, under effect of vibration, opium poppy shell fragments drops through rectangle sieve aperture 6.
Carry out 4 experiments below, to fall the relation of percent of pass of rate, stem stalk to check the sieve of the size of rectangle sieve aperture and opium poppy shell fragments:
Experiment 1: longitudinal size B to fall on opium poppy shell debris screen the impact of rate
Experimental technique:
(1) choose the longitudinal size B of specific standard, only get a rectangle sieve aperture effective, other rectangle sieve aperture is all closed with adhesive tape.
(2) linear vibrating screen is started.
(3) choose the simulation opium poppy shell fragments material 100 of specific standard size, adopt hand fed side to put into the material channel section start at target rectangle sieve aperture place piecewise.
(4) simulate after opium poppy shell fragments material all discharged by sieve plate rear end, rectangle sieve aperture respectively, the material that rectangle sieve aperture is discharged is counted, get and repeat laboratory mean values for three times and be the sieve of specific standard material under specific longitudinal size B condition and fall rate.
(5) longitudinal size B is constant, changes the size of simulation opium poppy shell fragments material, again repeats step (1)-(4).
(6) longitudinal size B changes, and again repeats step (1)-(5).
The fall data of rate of whole sieve are as shown in table 1:
Table 1 longitudinal size B falls on debris screen the impact of rate
As known from Table 1: when longitudinal size B is more than 20mm, all different debris screens rate that falls is 100%, analysis reason is thought, maximum fragment diameter is 30mm, when B is greater than 15mm, when fragment is by rectangle sieve aperture, it is not 1/2 when with upper part, by entrance boundary, front end reaches outlet circle, can drop through rectangle sieve aperture because center of gravity is unsettled.
Experiment 2: longitudinal size B is tested the impact of stem stalk percent of pass
Experimental technique:
(1) choose the longitudinal size B of specific standard, only get a rectangle sieve aperture effective, other rectangle sieve aperture is all closed with adhesive tape.
(2) linear vibrating screen is started.
(3) choose stem stalk 100, adopt hand fed mode to put into the material channel section start at target rectangle sieve aperture place.
(4) after stem stalk is all discharged by sieve plate rear end, rectangle sieve aperture respectively, the material that sieve plate rear end is discharged is counted, get and repeat the percent of pass that laboratory mean values are stem stalk under specific longitudinal size B condition for three times.
(5) longitudinal size B is constant, changes the size of stem stalk, again repeats step (1)-(4).
(6) longitudinal size B changes, and again repeats step (1)-(5).
The data of whole percent of pass are as shown in table 2:
Table 2 longitudinal size B is on the impact of stem stalk percent of pass
Sequence number Longitudinal size B (mm) Bar long (mm) Percent of pass (%) Sequence number Longitudinal size B (mm) Bar long (mm) Percent of pass P (%)
1 40 50 0 29 25 90 100
2 40 60 0 30 25 100 100
3 40 70 0 31 25 110 100
4 40 80 4 32 25 120 100
5 40 90 43.3 33 20 50 55
6 40 100 70.5 34 20 60 94
7 40 110 83 35 20 70 100
8 40 120 87.5 36 20 80 100
9 35 50 0 37 20 90 100
10 35 60 0 38 20 100 100
11 35 70 0 39 20 110 100
12 35 80 23 40 20 120 100
13 35 90 73 41 15 50 96
14 35 100 90 42 15 60 100
15 35 110 92 43 15 70 100
16 35 120 98.5 44 15 80 100
17 30 50 0 45 15 90 100
18 30 60 15.5 46 15 100 100
19 30 70 50.5 47 15 110 100
20 30 80 80.5 48 15 120 100
21 30 90 96.5 49 10 50 97
22 30 100 99 50 10 60 100
23 30 110 99.5 51 10 70 100
24 30 120 99.5 52 10 80 100
25 25 50 7 53 10 90 100
26 25 60 51 54 10 100 100
27 25 70 89.5 55 10 110 100
28 25 80 95 56 10 120 100
From table 2, formation curve Fig. 6 and Fig. 7.
As shown in Figure 6, for certain longitudinal size B, along with the increase of culm length, its percent of pass also increases thereupon.
As shown in Figure 7, for the stem stalk of certain length, along with the increase of longitudinal size B, percent of pass declines.1. when longitudinal size B is less than 1/3 of stalk length, percent of pass is higher, substantially more than 90%.2., when longitudinal size B is greater than stalk length 1/3, percent of pass declines rapidly.3. when longitudinal size B reaches stalk long about 1/2, percent of pass is very low, is substantially less than 10%.4. when longitudinal size B ultrasonic crosses 1/2 of stalk length, percent of pass is close or equal 0, and the reason that reason and above-mentioned fragment drop is similar.
From table 2, Fig. 6, Fig. 7, longitudinal size B is below 25mm, and percent of pass is higher.
Experiment 3: the number of rectangle sieve aperture and the relation of stem stalk percent of pass
Experiment 1 and experiment 2 all only have a rectangle sieve aperture to carry out based on a passage, and the quantity by increasing the rectangle sieve aperture in passage in actual production repeatedly is screened to raise the efficiency.In order to verify the relation of porous percent of pass and single hole percent of pass, carry out the porous experiment that stem stalk passes through.
Select 1-4 groove as required in experiment, unnecessary groove adhesive tape is closed.Experiment adopts the fixing longitudinal size B of 30mm, and the stem stalk of 70mm, 80mm, 90mm tri-kinds of length specifications selecting screening rate feature easily to distinguish is tested.Experimental result is as shown in table 3.
Table 3 porous is tested
In table 3, last groove success rate of itemizing converts according to porous success rate and hole count to form, and have expressed the success rate of each groove that stem stalk passes through.Computing formula is:
p s＝(P 1) n
In formula: P s-porous percent of pass
P 1-single hole percent of pass
N-hole count
By table 3 1-4, last row that 5-8,9-12 are capable are known, and under certain bar length and longitudinal size B condition, for different hole counts, the success rate of single hole is that gap is little, proves that separating effect is metastable.
Experiment 4:
Table 4 stem stalk distribution of weight rule is added up
Sequence number i Bar long (mm) Quantitative proportion (%) Part by weight g (%)
1 50 6.57 1.91
2 60 5.54 2.19
3 70 6.57 3.07
4 80 7.08 3.78
5 90 7.39 4.44
6 100 7.63 5.11
7 110 6.67 4.93
8 120 54.23 75.01
Sampling statistical analysis is carried out to actual cut product, obtains the ratio of different length grade stem stalk as table 4.In order to quantize the screenability for stem stalk under different longitudinal size B part, for the stem stalk combined experiments product that different bar is long, associative list 4, proposes the concept of stem stalk mixing percent of pass, and the bar namely successfully screened heavily accounts for the ratio of total bar weight of all participation sortings.
S = ( Σ i = 1 n P i g i ) / ( Σ i = 1 n g i )
S-stem stalk mixing percent of pass.
P ithe screening rate of stem stalk under current longitudinal size B condition that-the i-th kind of bar is long, P idirectly can look into from table 4 and get.
G ithe part by weight of raw material shared by the stem stalk of-the i-th kind of bar length.
The result of experiment as shown in Figure 8, is filtered into power by stem stalk Weight computation under different longitudinal size B condition, and when longitudinal size B is less than or equal to 25mm, success rate can reach more than 90%.
Total experiment conclusion:
For opium poppy shell fragments, longitudinal size B is more than 20mm, and the sieve with 100% falls rate.
For stem stalk, longitudinal size B is below 25mm, can reach the percent of pass of more than 90%.
Therefore, longitudinal size B is 20mm-25mm, and can ensure that the sieve of opium poppy shell fragments falls rate, also can ensure the percent of pass of stem stalk, be the size range of optimum.
Above-mentioned is the present invention's preferably embodiment; but embodiments of the present invention are not by the restriction of foregoing; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (4)

1. the linde sieve tray of sorting opium poppy shell fragments and stem stalk, is characterized in that: comprise sieve plate, multiple sieve aperture batten and multiple gib block,
Described sieve plate is rectangle, and the long side direction of sieve plate is line direction before material, and sieve plate rearward edges and edge, two long limits are provided with and stop limit, and sieve plate has multiple horizontal parallel bar hole;
Described sieve aperture batten is rectangle, sieve aperture batten has multiple rectangle sieve aperture, sieve aperture batten presents ladder-shaped, and the lateral dimension A of rectangle sieve aperture is greater than the longitudinal size B of line direction before material, longitudinal size B is 20mm-25mm, and the ratio of longitudinal size B and lateral dimension A is 1:2 ~ 1:3;
Multiple described gib block is arranged in sieve plate along line direction parallel equidistant before material, multiple material channel is formed between gib block, described in each, sieve aperture batten is arranged in the bar hole of sieve plate, and the spacing between gib block equals the lateral dimension A of the rectangle sieve aperture of sieve aperture batten.
2. the linde sieve tray of sorting opium poppy shell fragments according to claim 1 and stem stalk, is characterized in that: described sieve aperture batten and gib block are connected by screw.
3. the linde sieve tray of sorting opium poppy shell fragments according to claim 1 and stem stalk, is characterized in that: the below of described sieve plate is provided with multiple horizontal parallel angle steel, and angle steel, sieve plate and gib block are connected by screw.
4. the screening technique of the linde sieve tray of sorting opium poppy shell fragments according to claim 1 and stem stalk, it is characterized in that: described linde sieve tray is installed on linear vibrating screen, open linear vibrating screen, material is poured into toward linde sieve tray from sieve plate rear, material is the mixture of opium poppy shell fragments and stem stalk, opium poppy shell chip size is different and be irregularly shaped, in weight, the full-size of opium poppy shell fragments of more than 95% is less than 30mm, in weight, the length of stem stalk of more than 95% concentrates on 50-120mm scope, material is distributed in the material channel between each gib block under effect of vibration, under effect of vibration, stem stalk is parallel or nearly parallel to gib block and moves ahead, the end of linde sieve tray exports stem stalk, gib block does not have guide effect to opium poppy shell fragments, under effect of vibration, opium poppy shell fragments drops through rectangle sieve aperture.
CN201510375142.0A 2015-06-30 2015-06-30 Guided sieve tray sorting opium poppy shell fragments and stalk, and screening method thereof Pending CN104923475A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112090493A (en) * 2018-08-21 2020-12-18 李芳军 Processing device and processing method for poppy
CN113510078A (en) * 2021-04-22 2021-10-19 安徽捷泰智能科技有限公司 Feeding device is selected to beans look

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857176A (en) * 1986-08-04 1989-08-15 Derrick Manufacturing Corporation Reinforced molded polyurethane vibratory screen
CN101018618A (en) * 2004-09-15 2007-08-15 美卓矿物（磨损保护）公司 Screen and screen element
CN101020178A (en) * 2006-02-13 2007-08-22 孙即杰 Screen deck and combined screen plate thereof
CN201454818U (en) * 2009-07-03 2010-05-12 新乡市花溪机械制造有限公司 Stepped sorting screen
CN204892325U (en) * 2015-06-30 2015-12-23 华南农业大学 Select separately direction sieve of opium poppy shell piece and stem stalk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857176A (en) * 1986-08-04 1989-08-15 Derrick Manufacturing Corporation Reinforced molded polyurethane vibratory screen
CN101018618A (en) * 2004-09-15 2007-08-15 美卓矿物（磨损保护）公司 Screen and screen element
CN101020178A (en) * 2006-02-13 2007-08-22 孙即杰 Screen deck and combined screen plate thereof
CN201454818U (en) * 2009-07-03 2010-05-12 新乡市花溪机械制造有限公司 Stepped sorting screen
CN204892325U (en) * 2015-06-30 2015-12-23 华南农业大学 Select separately direction sieve of opium poppy shell piece and stem stalk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112090493A (en) * 2018-08-21 2020-12-18 李芳军 Processing device and processing method for poppy
CN113510078A (en) * 2021-04-22 2021-10-19 安徽捷泰智能科技有限公司 Feeding device is selected to beans look

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