CN104914006A - Experiment device and experiment method for detecting flow regularity of granular mixtures in silo - Google Patents
Experiment device and experiment method for detecting flow regularity of granular mixtures in silo Download PDFInfo
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- CN104914006A CN104914006A CN201510267325.0A CN201510267325A CN104914006A CN 104914006 A CN104914006 A CN 104914006A CN 201510267325 A CN201510267325 A CN 201510267325A CN 104914006 A CN104914006 A CN 104914006A
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Abstract
The invention discloses an experiment device for detecting flow regularity of granular mixtures in a silo. The experiment device comprises a support mechanism, a silo main body arranged on the support mechanism, and a supply mechanism for supplying granular mixtures for the silo main body. The silo main body comprises a positive organic glass barricade at the front part, a rear organic glass barricade at the rear part, left and right side plates located at two sides, and a discharge mechanism located at the bottom. The positive organic glass barricade is provided with scales I and the rear organic glass barricade is provided with strain gages used for monitoring pressure change of points of the organic glass barricades in granular mixture flowing. The positive organic glass barricade and the rear organic glass barricade are transparent organic glass plates. The experiment device realizes visual and convenient research on flow regularity of granular mixtures in a silo and prevents influence caused by place, equipment and personnel safety on an on-site test thereby preventing measurement data errors.
Description
Technical field
The invention belongs to the field tests that underground mining ore drawing and silo fill the bulk solid flowing law of discharge process, be specifically related to a kind of indoor experimental apparatus for moving belt scope and testing pressure on side wall in silo bulk solid flow process and method.
Background technology
In the last few years, along with the storage forwarding business of bulk cargo is constantly towards quick, quantitative, accurate future development, storehouse cylinder and hopper be widely used in the industries such as metallurgy, chemical industry, coal, grain.In use have also discovered problems, the blocking of such as particle to discharge port, the wearing and tearing to bulkhead and break.In order to study above problem, the flow characteristics of bulk cargo must be understood.Due to its mobility status than liquid and solid all complicated, therefore significant to real world applications to its deep Learning Studies.
During actual silo discharging, the flow pattern of material is simple a kind of or several mixing, be difficult to describe by traditional theory, in addition, material in motion process to the acting force of silo with remain static time be diverse, therefore in storehouse, the stress problems of material is very complicated, its original state, mobility status are different, even if draw off the material of minute quantity, the pressure on silo wall also increases to some extent, or even during static pressure 1 ~ 2 times.The unload material way of silo is different, and the numerical value that pressure on bin wall increases is also different.As for the mechanism that dynamic pressure produces, scholars is also that There are many different versions of a story, has bin stock characteristic changing to say in early days, dynamically encircles and say, can explain some phenomenons, but not form the theory of computation.
The research of current silo prose style free from parallelism flowing law mainly utilizes experimental formula, on-the-spot test and numerical simulation three kinds of means.But a large amount of facts have proved that empirical formula method (Janssen formula) differs comparatively large with actual test result, even some calculate and run counter to engineering phenomenon; On-the-spot test, owing to being subject to the restriction (particularly large-scale drop shaft and large silo) of the conditions such as place, equipment and personal security, be often difficult to carry out execute-in-place, and its result having larger discreteness, should not analyze and research; Numerical simulation be present stage main utilize means, but due between granule, the friction factor between granule and the borehole wall is difficult to determine, therefore its result only can carry out qualitative analysis, cannot as design Main Basis.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of for measuring the bulk solid experimental provision of flowing law and experimental technique in the silo, can study the flowing law of a prose style free from parallelism in silo to intuitive and convenient, with the restriction avoiding on-the-spot test to be subject to the conditions such as place, equipment and personal security, the inaccurate phenomenon of measurement data is caused to occur.
The technical solution used in the present invention is:
For measuring an experimental provision for bulk solid flowing law in the silo, there is supporting mechanism, be arranged on the silo main body on supporting mechanism, and for the organization of supply to silo main body supply bulk solid; Described silo main body, by being positioned at the positive organic glass barricade of front and back and rear organic glass barricade, is positioned at left plate and the right plate of both sides, is positioned at the shedding mechanism composition of bottom; Described positive organic glass barricade is provided with scale mark I, described rear organic glass barricade is provided with the foil gauge for monitoring each point pressure change on organic glass barricade in bulk solid flow process, and described positive organic glass barricade and rear organic glass barricade are transparent plexiglass plate.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, described supporting mechanism comprises desktop, with the table leg of supporting desktop, arrange on the table for supporting the gusseted plate of positive organic glass barricade and rear organic glass barricade, desktop is provided with leak, shedding mechanism comprises symmetrical two base plates, two base plates are slidably matched with left plate and right plate respectively, described shedding mechanism is corresponding with leak, and the length of described base plate is identical to the length at desktop edge with leak edge.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, position corresponding with leak below desktop is provided with leak switch, and described leak switch is drawing and pulling type construction of switch, and described desktop is provided with scale mark II along base plate direction.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, described feeding machanism has travelling belt, driving-belt is divided into and is positioned at below shedding mechanism for reclaiming the lift portion of bulk solid, the bulk solid of lift portion is transferred to the transhipment part of horizontal level, and for by bulk solid horizontal transport to the horizontal transport part of silo main body.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, described feeding machanism also comprises even filler device, described even filler device comprises the inclination buffering flat plates being positioned at silo body top, the top of inclination buffering flat plates is provided with arc-shaped guide rail, the both sides of inclination buffering flat plates are provided with limiting plate, the top of inclination buffering flat plates is provided with rotor, the top of described rotor is the stiff end receiving bulk solid, the bottom of rotor is the mobile terminal exporting bulk solid, the slide block of adjustable speed is equipped with in the bottom of rotor, described slide block is flexibly connected with described arc-shaped guide rail.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, the width of described inclination buffering flat plates is identical with the width of organic glass barricade.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, the both sides of the madial wall of described left plate and right plate are respectively equipped with the cutting groove I for installing positive organic glass barricade and rear organic glass barricade.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, the spacing of described adjacent scale mark I is 50mm, and the spacing of adjacent foil gauge is 90mm.
Described a kind of experimental provision for measuring bulk solid flowing law in the silo, the top of described silo main body is provided with funnel.
For measuring a test method for bulk solid flowing law in the silo, comprise the steps:
1) leak switch is closed to block the leak of desktop;
2) initially feed, manually charging is to certain altitude, ensures that in bulk solid flow process, overall flow appears in silo body top;
3) connect foil gauge, start the pressure change of monitoring on rear organic glass barricade;
4) start feeding machanism, the shedding mechanism opening silo bottom part body starts discharging, and the bulk solid of outflow transmits back in silo main body by feeding machanism, realizes circulation;
5) to be recycled stable, positive organic glass barricade is drawn the bulk solid moving belt scope in discharge process.
The present invention has following beneficial effect:
1, a kind of experimental provision for measuring bulk solid flowing law in the silo of the present invention, comprises three parts, is respectively supporting mechanism, silo main body and feeding machanism, three parts can freely be separated, and are convenient to disassembly and assembly, carry and keep in repair, meet experiment needs.Positive organic glass barricade and the rear organic glass barricade of silo main body are transparent plexiglass plate, be convenient to the flow state of observing silo body interior bulk solid, the bulk solid moving belt scope in bulk solid flow process can be described according to the scale mark I of positive organic glass barricade simultaneously, according to the foil gauge of rear organic glass barricade, monitor the situation of change of each point pressure on organic glass barricade after in bulk solid flow process.This device can draw the scope of moving belt in bulk solid flow process; Real-time testing can be carried out to each measuring point pressure of the barrel of silo main body in whole process; Be convenient to the measurement to bulk solid flowing law in silo and research, do barricade with transparent plexiglass plate simultaneously, closely very clearly can observe the flowing of bulk solid, simultaneously owing to there being the existence of scale mark, can experiment effect more clear.
2, shedding mechanism comprises symmetrical two base plates, two base plates are slidably matched with left plate and right plate respectively, shedding mechanism 4 is corresponding with leak, the length of base plate is identical to the length at desktop edge with leak edge, the size of discharge port in silo bottom discharge mechanism can be changed, the bulk solid flowing law under convenient test different experimental conditions.
3, feeding machanism has travelling belt, driving-belt is divided into and is positioned at below shedding mechanism for reclaiming the lift portion of bulk solid, the bulk solid of lift portion is transferred to the transhipment part of horizontal level, and for by bulk solid horizontal transport to the horizontal transport part of silo main body.This feeding machanism achieves the robotization of whole dress discharge process, improves efficiency and the effect of experiment.
4, the even filler device in feeding machanism makes charging process realize overall evenly charging, and the object that feed rate is adjustable.Slide block at the uniform velocity moves back and forth on arc-shaped guide rail, and translational speed can regulate, and the left and right realizing charging process above silo main body is even.
Accompanying drawing explanation
Fig. 1 is a kind of main TV structure schematic diagram for measuring the bulk solid experimental provision of flowing law in the silo of the present invention.
The plan structure schematic diagram that Fig. 2 is experimental provision shown in Fig. 1.
Fig. 3 is the main TV structure schematic diagram of silo mechanism in the present invention.
Fig. 4 is the left TV structure schematic diagram of silo mechanism in the present invention.
Fig. 5 is the scale mark in silo mechanism of the present invention on organic glass barricade.
Fig. 6 is the foil gauge in silo mechanism of the present invention on organic glass barricade.
Fig. 7 is the main TV structure schematic diagram of supporting mechanism of the present invention.
Fig. 8 be supporting mechanism of the present invention look up structural representation.
Fig. 9 is general assembly structural representation of the present invention.
Figure 10 is the structural representation of feeding machanism of the present invention.
Figure 11 is the main TV structure schematic diagram of even filler device in feeding machanism.
Figure 12 is the left TV structure schematic diagram of even filler device in feeding machanism.
Wherein, 1-silo main body, 2-supporting mechanism, 3-feeding machanism, 4-shedding mechanism, 5-funnel, the positive organic glass barricade of 6-, 7-right plate, 8-cutting groove II, 9-cutting groove I, 10-scale mark I, 11-foil gauge, 12-gusseted plate, 13-table leg, 14-desktop, 15-leak, 16-leak switch, 17-scale mark II, 18-travelling belt, the even filler device of 19-, 20-lift portion, 21-transports part, 22-horizontal transport part, 23-rotor, 24-arc-shaped guide rail, 25-slide block, 26-inclination buffering flat plates, 27-limiting plate, 28-stiff end, 29-mobile terminal.
Embodiment
As shown in the figure for measuring an experimental provision for bulk solid flowing law in the silo, there is supporting mechanism 2, be arranged on the silo main body 1 on supporting mechanism 2, and for supplying the organization of supply 3 of bulk solid to silo main body 1; Silo main body 1, supporting mechanism 2 and organization of supply 3 three part can freely be separated.Silo main body 1 is by being positioned at the positive organic glass barricade 6 of front and back and rear organic glass barricade, be positioned at left plate and the right plate 7 of both sides, the shedding mechanism 4 being positioned at bottom forms, the both sides of the madial wall of left plate and right plate 7 are respectively equipped with the cutting groove I 9 for installing positive organic glass barricade 6 and rear organic glass barricade, shedding mechanism 4 comprises symmetrical two base plates, two base plates are slidably matched with left plate and right plate 7 respectively, the below of left plate and right plate 7 is provided with cutting groove II 8, the width of cutting groove II 8 and the width of base plate match, base plate coordinates with cutting groove II 8 and left plate/right plate 7 is slidably connected.Positive organic glass barricade 6 is provided with scale mark I 10, rear organic glass barricade is provided with the foil gauge 11 for monitoring each point pressure change on organic glass barricade in bulk solid flow process, the spacing of adjacent scale mark I 10 is 50mm, the spacing of adjacent foil gauge 11 is 90mm, and positive organic glass barricade 6 and rear organic glass barricade are transparent plexiglass plate.The top of silo main body 1 is provided with funnel 5.
Supporting mechanism 2 comprises desktop 14, with the table leg 13 of supporting desktop 14, be arranged on desktop 14 for supporting the gusseted plate 12 of positive organic glass barricade 6 and rear organic glass barricade, desktop 14 is provided with leak 15, shedding mechanism 4 bottom silo main body 1 is corresponding with leak 15, preferably, arrange discharge port size for convenience, floor length is suitable to the distance on desktop border with desktop leak edge.Position corresponding with leak 15 below desktop 14 is provided with leak switch 16, leak switch 16 is the leak switchgears based on drawer principle, desktop 14 is provided with scale mark II 17 along base plate direction, coordinate the use of base plate in silo bottom discharge mechanism, by the change in size regulating scale value to realize discharge port.
Feeding machanism 3 has travelling belt 18, driving-belt 18 is divided into and is positioned at below shedding mechanism 4 for reclaiming the lift portion 20 of bulk solid, the bulk solid of lift portion 20 is transferred to the transhipment part 21 of horizontal level, and for by bulk solid horizontal transport to the horizontal transport part 22 of silo main body 1.Feeding machanism 3 also comprises even filler device 19, described even filler device 19 comprises the inclination buffering flat plates 26 being positioned at silo main body 1 top, the top of inclination buffering flat plates 26 is provided with arc-shaped guide rail 24, the both sides of inclination buffering flat plates 26 are provided with limiting plate 27, the top of inclination buffering flat plates 26 is provided with rotor 23, the top of rotor 23 is the stiff end 28 receiving bulk solid entrance, the bottom of rotor is the mobile terminal 29 exporting bulk solid outlet, the slide block 25 of adjustable speed is equipped with in the bottom of rotor 23, slide block 25 is flexibly connected with arc-shaped guide rail 24, mobile terminal 29 and slide block 25 are fixed together, move with slide block 25, slide block 25 at the uniform velocity can move back and forth on arc-shaped slide rail 24, translational speed can regulate, even with the left and right realizing charging process.The width of inclination buffering flat plates 26 is consistent with the width of organic glass barricade.Assemble according to following steps during experiment: first three parts of silo main body 1, supporting mechanism 2 and organization of supply 3 are installed respectively; Leak switch 16 in cut out supporting mechanism is to block the leak 15 of desktop.Silo main body 1 is installed, first bottom discharge structure 4 is installed, is regulated the size of discharge port by scale mark II 17, then remainder is installed, finally assemble feeding machanism.
For measuring a test method for bulk solid flowing law in the silo,
Concrete operation steps is as follows:
(1) leak switch 16 is closed to block the leak 15 of desktop;
(2) initially feed, manually charging is to certain altitude, ensures that in prose style free from parallelism flow process, silo top occurs overall flow, owing to needing the volume reserving travelling belt part, so will add on this basis into some material;
(3) connect foil gauge 11, start the pressure change of monitoring on rear organic glass barricade;
(4) start feeding machanism 3, the shedding mechanism 4 opened bottom silo main body 1 starts discharging, and the bulk solid of outflow transmits back in silo main body 1 by feeding machanism 3, realizes circulation;
(5) open leak switch 16 and start discharging, a prose style free from parallelism for outflow flows back in silo 1 by automatic loading and unloading materials device 3, realizes circulation;
(6) to be recycled stable, positive organic glass barricade 6 is drawn the bulk solid moving belt scope in discharge process.
Claims (10)
1. one kind for measuring the experimental provision of bulk solid flowing law in the silo, it is characterized in that, there is supporting mechanism (2), be arranged on the silo main body (1) on supporting mechanism (2), and for the organization of supply (3) to silo main body (1) supply bulk solid; Described silo main body (1), by being positioned at the positive organic glass barricade (6) of front and back and rear organic glass barricade, is positioned at left plate and the right plate (7) of both sides, is positioned at shedding mechanism (4) composition of bottom; Described positive organic glass barricade (6) is provided with scale mark I (10), described rear organic glass barricade is provided with the foil gauge (11) for monitoring each point pressure change on organic glass barricade in bulk solid flow process, and described positive organic glass barricade (6) and rear organic glass barricade are transparent plexiglass plate.
2. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 1, it is characterized in that, described supporting mechanism (2) comprises desktop (14), with the table leg (13) of supporting desktop (14), be arranged on desktop (14) for supporting the gusseted plate (12) of positive organic glass barricade (6) and rear organic glass barricade, desktop (14) is provided with leak (15), shedding mechanism (4) comprises symmetrical two base plates, two base plates are slidably matched with left plate and right plate (7) respectively, described shedding mechanism (4) is corresponding with leak (15), the length of described base plate is identical to the length at desktop (14) edge with leak (15) edge.
3. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 2, it is characterized in that, the position corresponding with leak (15), desktop (14) below is provided with leak switch (16), described leak switch (16) is drawing and pulling type construction of switch, and described desktop (14) is provided with scale mark II (17) along base plate direction.
4. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 1, it is characterized in that, described feeding machanism (3) has travelling belt (18), driving-belt (18) be divided into be positioned at shedding mechanism (4) below for reclaiming the lift portion (20) of bulk solid, the bulk solid of lift portion (20) is transferred to the transhipment part (21) of horizontal level, and for by bulk solid horizontal transport to the horizontal transport part (22) of silo main body (1).
5. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 4, it is characterized in that, described feeding machanism (3) also comprises even filler device (19), described even filler device (19) comprises the inclination buffering flat plates (26) being positioned at silo main body (1) top, the top of inclination buffering flat plates (26) is provided with arc-shaped guide rail (24), the both sides of inclination buffering flat plates (26) are provided with limiting plate (27), the top of inclination buffering flat plates (26) is provided with rotor (23), the top of described rotor (23) is the stiff end (28) receiving bulk solid, the bottom of rotor is the mobile terminal (29) exporting bulk solid, the slide block (25) of adjustable speed is equipped with in the bottom of rotor (23), described slide block (25) is flexibly connected with described arc-shaped guide rail (24).
6. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 5, it is characterized in that, the width of described inclination buffering flat plates (26) is identical with the width of organic glass barricade.
7. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 1, it is characterized in that, the both sides of the madial wall of described left plate and right plate (7) are respectively equipped with the cutting groove I (9) for installing positive organic glass barricade (6) and rear organic glass barricade.
8. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 1, it is characterized in that, the spacing of described adjacent scale mark I (10) is 50mm, and the spacing of adjacent foil gauge (11) is 90mm.
9. a kind of experimental provision for measuring bulk solid flowing law in the silo according to claim 1, it is characterized in that, the top of described silo main body (1) is provided with funnel (5).
10., for measuring a test method for bulk solid flowing law in the silo, it is characterized in that, comprise the steps:
1) leak switch (16) is closed to block the leak (15) of desktop;
2) initially feed, manually charging is to certain altitude, ensures that in bulk solid flow process, overall flow appears in silo body top;
3) connect foil gauge (11), start the pressure change of monitoring on rear organic glass barricade;
4) start feeding machanism, the shedding mechanism opening silo bottom part body starts discharging, and the bulk solid of outflow transmits back in silo main body (1) by feeding machanism, realizes circulation;
5) to be recycled stable, positive organic glass barricade (6) is drawn the bulk solid moving belt scope in discharge process.
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| CN107525618A (en) * | 2017-10-25 | 2017-12-29 | 国电科学技术研究院 | A kind of solid particle material determines device and assay method to the active force of silo |
| CN107703284A (en) * | 2017-08-09 | 2018-02-16 | 陕西省兴平市西北工程机械制造有限公司 | A kind of affined concrete collapses the measurement apparatus and method of stream parameter |
| CN112461665A (en) * | 2020-12-02 | 2021-03-09 | 华北科技学院 | High-precision measurement device and test method for interface pressure distribution of silo test model |
| CN115285537A (en) * | 2022-07-21 | 2022-11-04 | 长沙市奇俊机电科技有限公司 | Bin experiment system |
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| CN115285537B (en) * | 2022-07-21 | 2023-09-01 | 长沙市奇俊机电科技有限公司 | Stock bin experiment system |
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