A kind of automatic float-sink test device of coal
Technical field
The utility model belongs to coal and drifts along technical field, is specifically related to a kind of automatic float-sink test device of coal.
Background technique
Coal drifts along it will be seen that the density of feed coal forms (the number Mass Distribution of each density level product), to jigging, again
The washing process such as medium most Instructing manufacture acts on.For effective Instructing manufacture, raw coal property is determined, it is general to require monthly at least
The beginning of the month, the float-sink test of the end of month more than twice are carried out to entering to wash raw coal, needs to increase if meeting coal quality and fluctuating larger situation
Add test number (TN).In order to make test data more closing to reality situation, coal amount is tested every time and requires coal sample in 200kg or more.
Currently, being manual operation when national most of coal preparation plants' progress float-sink tests.Due to coal during float-sink test
Sample is more, step is complicated, needs manually repeatedly coal, stirs, fishes for, extracting strainer bucket etc., labor intensive, and the time compared with
It is long, seriously constrain working efficiency.Float-sink test is carried out every time and at least needs 2~3 people operation simultaneously, and primary test at least needs
Continuous work 5h or more could will enter to wash raw coal and separate according to density level, if count sunning, weighing, sampling, chemical examination in
Between, then expending the time can be longer.With the continuous expansion of coal preparation plant's production capacity, depending merely on artificial progress float-sink test, there are many disadvantages
End, if test result inaccuracy when sampling less, not having representativeness, serious labor intensive and time again when sampling more, generally
The personnel tested did not carried out the test knowledge learning of profession mostly, therefore inevitably will affect during the test
The accuracy of test.In common washing appliance, it is larger that Separator of heavy medium shallow slot enters to wash raw coal size, only manually uses fishing spoon
It is more difficult to fish for bulk floating object, and when smalls is drifted along, it is slowed down under heavy-fluid since granularity is thinner, when extracting screen tube, only
Extraction screen tube is gone to will also result in serious hand labor load by testing crew.In addition to this, the heavy-fluid of float-sink test is carried out
(zinc chloride) has strong corrosive, and during fishing for, extracting screen tube, transfer coal sample, easy splashing causes testing crew
Personal injury.
Thus, in order to avoid or reduce the above problem, it is necessary to study and develop automatic coal and drift along device.In recent years,
Both at home and abroad in terms of research of drifting along, there are some method, apparatus and related patents in relation to separation of drifting along.
In terms of external scientific research, Univ. of Pittsburgh B.S.Gottfried (1978) once mentioned coal and drifted along cleaning device,
And using the performance of distribution curve characterization, but specific device is not provided.Pittsburgh,U.S.A energy technology center (PETC)
- 0.5mm the particulate that R.P.Killmeyer etc. (1992) has studied laboratory scale using technology (organic heavy liquid) of drifting along is centrifuged
The washability of No. 8 coals of Wuerzburg.(2013) such as Japanese Okayama Univ. J.Oshitani are based on Density Separation method of drifting along, and are with dry sand
Medium is aggravated, using air auto-monitor continuous sorting upgrading coarse grain iron ore.Univ Melbourne Australia
G.V.Franks etc. (2013) using similar approach has studied the separation and concentration of coarse grain copper mine.
In terms of foreign patent, the method recycling of drifting along of waste plastic, waste paper etc. is focused primarily upon, it is floating not find related coal temporarily
Heavy related patents.One kind is devised in the patent (US3284282A) of U.S. R.H.Immel (1963) application to drift along recirculated water
Slot from waste paper foamed material for recycling expandable polystyrene.U.S. B.Hartleitner etc. (1999) applies special
Separating adsorbent/the floating material from product mixture of the seperator with the separating tank that drifts along is devised in sharp (US6685830B2)
Similar dense media shallow slot discharge is discharged in the device and method of material, floating object.The patent of the applications such as U.S. B.D.Peacock
(US5255859A) devised in one kind drift along grader for separate with grading plastic material detritus.
In terms of domestic scientific research, 1973, platform Ji Kuang once manufactured experimently into coal washery float-sink test floating device, and for coal
Float-sink test makes moderate progress (single drops to 3min~3.5min by 4min~5min) on the time although drifting along in fishing, drifts along
Zinc chloride consumption is higher than artificial fishing and drifts along 16.79%.2004, Yanzhou Mining (Group) Co., Ltd. Qiu Zhaoqin was described
A kind of quick float-sink test device of coal separation station-service drifts along using magnetized liquid (water adds iron powder under electromagnetic field effect), electromagnet
With DC current power supply (being lower than 10A) mode, it can guarantee heavy-fluid density in 1.2g/cm by control electric current3~2.0g/cm3Model
In enclosing, the coal sample of 50mm~0.5mm particle size fraction has been successfully separated with the device.2006, Shanghai municipal works design studies were total
The novel floating depositing pool that institute Wang Yin etc. describes a kind of double-deck advection sedimentation and air bearing is combined, the pond is for handling low turbid, Gao Zao
The raw water being alternately present with high concentrtion.
In terms of domestic patent, the utility model patent of Yongcheng Coal & Electricity Holding Group Co., Ltd. Ma Zhijie etc. (2012) application
The coal designed in (application No. is 201210322949.4) device that drifts along includes heavy-fluid bucket and flotation unit, and heavy-fluid bucket passes through company
Adapter tube road is connected with flotation unit;Its flotation unit is made of outer barrel and the interior bucket with open-work being arranged in outer barrel, outside
Bucket bottom is provided with the perfusion tube with pipe close;The pump housing is provided in connecting pipe.Though this device saves manpower to a certain extent
Resource reduces labor intensity, but the application of its pipe close is easy aging corrosion and material leakage, and it is naturally de- that gravity is also only limitted in terms of de-mediated
Water, and it is still to be improved in terms of the degree of automation.Utility model patent (the Shen of Anhui University of Science and Technology Zhu Jinbo (2012) application
First coal sample please be put into the net bottom bucket in float-sink test bucket number 201220098364.4) to be a kind of machine that continuously drifts along automatically,
Then the test(ing) medium that each medium contains different densities in bucket is successively pumped into float-sink test bucket, carries out float-sink test, and
It is provided with netted material scraper, sculping screen and product collector, handles each density grade product in time.Though this patent saves people
It is power, time-consuming short, but it feeds in medium, is also inadequate in terms of reflux type, automatic/hand operation with control in terms of need to be changed
Into.China Mining University, which contains, discloses one at the utility model patent (application No. is 201420020314.3) for waiting (2014) to apply
Kind is automatic to fish out the slot that drifts along, and the both ends on groove body top one side are equipped with bracket, and bracket supports the plate for being connected to be covered with micropore
The other end of rotation axis, bracket is connected by axis with motor;When motor rotation, plate is driven to rotate in the slot that drifts along, floated
The coal floated in deep gouge is carried over pivotal plate, realizes that automatic fishing is drifted along.Though this device is simple, easy to operate, it exists
Certain problem, perforated flat plate effectively all cannot take all lower density coal particles out of the slot that drifts along, nubbin coal sample
Directly affect next density level drift along as a result, and since required density fluid of drifting along cannot be replaced automatically, need manually more
It changes, it is also not comprehensive to fish out the purpose drifted along required by realization utility model person automatically.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies in the prior art, provide a kind of automatic float-sink test of coal
Device uses magnetic iron ore dense media to replace zinc chloride to make heavy-fluid and carry out floating experiment, and the density fluid for drifting along required can be automatic
Replacement, and more can comprehensively realize that automatic fishing is drifted along, easy to operate, high degree of automation big to the treating capacity of coal.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: automatic float-sink test device of coal,
Be characterized in that: including desliming screen, storing feeder, drift along mechanism, de-mediated mechanism and cleaned coal collecting mechanism automatically, the desliming
Sieve and storing feeder are arranged at the side of the mechanism of drifting along automatically, and the de-mediated mechanism and cleaned coal collecting mechanism are all provided with
It sets in the other side of the mechanism of drifting along automatically, the storing feeder includes belt material-feeding machine, storage vat and batcher, institute
The discharge port for stating belt material-feeding machine connects with the feed inlet of storage vat, and the discharge outlet of the storage vat bottom is provided with electric brake
Plate valve, the feed inlet of the batcher are located at the lower section of electric brake plate valve, the feed inlet of the belt material-feeding machine and desliming screen
Discharge port connects;Automatically the mechanism of drifting along includes sorting groove and dense media feed system, the sorting groove include external groove body,
Intranet bucket and spoil bucket, the intranet bucket are arranged in external groove body, and the upper limb of the intranet bucket is lower than external groove body
Upper limb, be provided with overturning flashboard at the outlet at bottom of the intranet bucket, be equipped on the intranet bucket and turned over for driving
The mechanism for opening/closing of turnstile plate opening and closing, the upper end of the external groove body are provided with overflow weir, at the outlet at bottom of the external groove body
It is provided with gate valve, the lower section of gate valve is arranged in the spoil bucket, and the dense media feed system is by pipeline into external groove body
Convey magnetic iron ore dense media;The discharge port of the batcher connects with the feed inlet of intranet bucket, the import of the de-mediated mechanism
Connect with overflow weir, the cleaned coal collecting mechanism is arranged in the cleaned coal exit of the de-mediated mechanism and for collecting conveying essence
Coal.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the dense media feed system includes stirring
Bucket, delivery pump, conjunction Jie's bucket, conjunction Jie pump, conjunction Jie manages, level stream pipeline and upper up-flow pipeline, the outlet of the agitator pass through pipe
Road connects with the import of delivery pump, and the outlet of the delivery pump is connected by pipeline with the import for closing Jie's bucket, conjunction Jie's bucket
Outlet is connected by pipeline with the import for closing the pump that is situated between, and the outlet for closing the pump that is situated between is connected by pipeline with the one end for closing Jie's pipe, institute
State close Jie's pipe the other end connect with one end of level stream pipeline and upper up-flow pipeline, the other end of the upper up-flow pipeline and
The upper up-flow import of external groove body lower part connects and the magnetic iron ore dense media of upper up-flow pipeline promotes the coal in intranet bucket
Charcoal is loosely layered, and is equipped with upper up-flow valve on the upper up-flow pipeline;The other end of the level stream pipeline and external groove body
The level stream import on top connects and the magnetic iron ore dense media of level stream pipeline promotes the float coal after layering to pass through overflow weir
External groove body is discharged, level stream valve is installed on the level stream pipeline, the height of the level stream import is higher than intranet
The upper limb of bucket, Jie's bucket that closes are connected by closing Jie's return pipe with the lower part of external groove body.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: at the air hose mouth of the external groove body lower part
It is connected with the air hose for conveying high-pressure wind to promote coal to be further layered, air-valve, the air hose are installed on the air hose
The height of mouth is higher than the height of the upper up-flow import and is lower than the height of the level stream import.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the level stream import is located at external groove body
Side, the overflow weir is located at the other side of external groove body, and the level stream import is oppositely arranged with overflow weir, the inside
The feed inlet of net bucket and the level stream import are located at the same side.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the de-mediated mechanism includes sculping screen, rinses
Head, dilute Jie's bucket and magnetic separator, the sculping screen is obliquely installed and the outlet end of sculping screen is lower than the input end of sculping screen, described
The import of sculping screen connects with overflow weir, and the sculping screen closes Jie's section close to one section of overflow weir, and the sculping screen is far from overflowing
One section for flowing weir is dilute Jie's section;The flushing head, which is mounted on above sculping screen and is located at, closes Jie's section and dilute Jie's section joint, institute
The dilute Jie outlet for stating dilute Jie's section bottom is connected by pipeline with the import of dilute Jie's bucket, and the outlet of dilute Jie's bucket passes through pipeline and magnetic
The import of machine is selected to connect, the conjunction for closing Jie's section bottom is situated between to export and connect by pipeline with the import for closing Jie's bucket.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the cleaned coal collecting mechanism includes traction electricity
Machine, track and cleaned coal Material collecting box for harvesting, the quantity of the cleaned coal Material collecting box for harvesting are that multiple and multiple cleaned coal Material collecting box for harvesting are respectively provided in orbit,
The traction electric machine is connected with multiple cleaned coal Material collecting box for harvesting by traction rope and multiple cleaned coal Material collecting box for harvesting is driven to run along track
To collect the cleaned coal of different densities.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the track is rectilinear orbit or semi-circle rail
Road.
A kind of above-mentioned automatic float-sink test device of coal, it is characterised in that: the inside of the external groove body and close to overflowing
The side on stream weir is equipped with for the intracorporal float coal of external slot to be scraped to the scraper mechanism into sculping screen, and the scraper mechanism includes becoming
Frequency motor, shaft and scraper, the output shaft of the variable-frequency motor are fixedly connected with one end of shaft, and the scraper is fixedly mounted on
In shaft, the shaft is located in external slot body and is rotatablely connected with external groove body, and the variable-frequency motor is mounted on external groove body
Lateral wall on.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the mechanism for opening/closing includes two and sets relatively
The the first flashboard regulating mechanism and the second flashboard regulating mechanism set, the first flashboard regulating mechanism and the second flashboard regulating mechanism
Structure it is identical and include overturning motor, lead screw, nut and upset connecting rod, the output shaft of the overturning motor and lead screw it is upper
End is fixedly connected, and the nut is set in lead screw and cooperates with threads of lead screw, and the upset connecting rod is hollow structure, the lead screw
It being respectively positioned in upset connecting rod with nut, the nut is fixedly connected by connecting rod with the upper inside wall of upset connecting rod, and described
The lower end of the upset connecting rod of one flashboard regulating mechanism and the second flashboard regulating mechanism two rotating sheets with overturning flashboard respectively
Lower part is hinged, and the upper end of the rotating sheet and the bottom of intranet bucket are hinged, including the lower part setting of the upset connecting rod
In portion's net bucket, the overturning motor is fixed on external groove body by mounting rod.
The above-mentioned automatic float-sink test device of a kind of coal, it is characterised in that: the sieve diameter of the desliming screen is
0.5mm, the length L of the top major trough body of the external groove body is 700mm, width B is 500mm, height H is 500mm.
Compared with the prior art, the utility model has the following advantages:
1, existing floating experiment makees heavy-fluid using zinc chloride, has strong corrosive, generates injury to human body;And this reality
Realizing magnetic iron ore dense media with novel coal automatic floating sink device replaces zinc chloride to be tested, oneself can prepare magnetic iron ore weight
Medium, can also directly utilize the magnetic iron ore dense media of coal preparation plant, and experimental result accomplishes the mesh for Site Service closer to scene
's.
2, it is one prominent that the utility model replaces heavy-fluid zinc chloride to carry out coal floating experiment using magnetite powder dense media
It is broken, and the density of magnetic iron ore dense media can make scene according to experiment or needs of production flexible modulation, energy experimental result
Significant data carry out Instructing manufacture.
3, the utility model is to combine artificial progress float-sink test data at present and automation experimental technique, development corresponding
Automatic operation management measure, improves test accuracy, and the automatic of formation fishes out the device that drifts along, it can more comprehensive to realize certainly
Dynamic fishing is drifted along, and coal treating capacity is big, easy to operate, high degree of automation.
4, the utility model can contact the magnetic at the scene of closely can directly taking using magnetite powder dense media with production scene
Iron Ore Powder dense media carries out quick float-sink test, carries out production inspection to produced on-site, forms fast feedback mechanism;In addition, chlorine
Changing zinc heavy-fluid has strong corrosivity, seriously endangers the physical and mental health of operator, and environmental pollution is larger, magnetite powder
Dense media can prevent the drawbacks of zinc chloride heavy-fluid completely.
5, the utility model automatic floating sink device can realize that the automation of coal float-sink test carries out, and liberate manpower, improve
Test efficiency reduces the human error in experimentation, improves operation precision.It is connect in addition, reducing operator with zinc chloride
The chance of touching can effectively prevent operator to be chlorinated the phenomenon that zinc heavy-fluid is corroded, the physical and mental health of effective protection operator.
Below by drawings and examples, the utility model is further described in detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1.
Fig. 2 is the positional diagram of scraper mechanism and external groove body in the utility model embodiment 1.
Fig. 3 is the structural representation of the first flashboard regulating mechanism, the second flashboard regulating mechanism in the utility model embodiment 1
Figure.
Fig. 4 is the structural schematic diagram of cleaned coal collecting mechanism in the utility model embodiment 2.
Description of symbols:
1-desliming screen;2-belt material-feeding machines;3-storage vats;
4-batchers;5-electric brake plate valves;6-agitators;
7-delivery pumps;8-close Jie's bucket;9-spoil buckets;
10-external groove bodies;11-intranet buckets;12-overturning flashboards;
13-gate valves;14-overflow weirs;15-close the pump that is situated between;
16-close the pipe that is situated between;17-level stream pipelines;17-1-level stream valve;
18-upper up-flow pipelines;18-1-upper up-flow valve;19-air hoses;
19-1-air-valve;20-sculping screens;20-1-conjunction Jie's section;
The dilute Jie's section of 20-2-;21-dilute Jie's buckets;22-magnetic separators;
23-rinse head;24-traction electric machines;25-tracks;
26-cleaned coal Material collecting box for harvesting;27-connecting rods;28-variable-frequency motors;
29-shafts;30-scrapers;31-scraper mechanisms;
32-overturning motors;33-nuts;34-lead screws;
35-upset connecting rods;36-the first flashboard regulating mechanism;37-the second flashboard regulating mechanism;
38-close Jie's return pipe.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of automatic float-sink test device of coal of the utility model, including desliming screen 1, storing batcher
Structure, mechanism of drifting along automatically, de-mediated mechanism and cleaned coal collecting mechanism, the desliming screen 1 and storing feeder are arranged at described
Automatically the side for mechanism of drifting along, the de-mediated mechanism and cleaned coal collecting mechanism are arranged at described the another of mechanism that drift along automatically
Side, the storing feeder include belt material-feeding machine 2, storage vat 3 and batcher 4, the discharge port of the belt material-feeding machine 2 with
The feed inlet of storage vat 3 connects, and the discharge outlet of 3 bottom of storage vat is provided with electric brake plate valve 5, the batcher 4
Feed inlet is located at the lower section of electric brake plate valve 5, and the feed inlet of the belt material-feeding machine 2 connects with the discharge port of desliming screen 1;It is described
Automatically mechanism of drifting along includes sorting groove and dense media feed system, and the sorting groove includes external groove body 10,11 and of intranet bucket
Spoil bucket 9, the intranet bucket 11 are arranged in external groove body 10, and the upper limb of the intranet bucket 11 is lower than external groove body 10
Upper limb is provided with overturning flashboard 12 at the outlet at bottom of the intranet bucket 11, is equipped on the intranet bucket 11 for band
The mechanism for opening/closing that dynamic overturning flashboard 12 opens and closes, the upper end of the external groove body 10 are provided with overflow weir 14, the external groove body 10
Outlet at bottom at be provided with gate valve 13, the lower section of gate valve 13 is arranged in the spoil bucket 9, and the dense media feed system passes through
Pipeline conveys magnetic iron ore dense media into external groove body 10;The feed inlet phase of the discharge port of the batcher 4 and intranet bucket 11
It connects, the import of the de-mediated mechanism connects with overflow weir 14, and the cleaned coal of the de-mediated mechanism is arranged in the cleaned coal collecting mechanism
Exit and for collect conveying cleaned coal.
As shown in Figure 1, the dense media feed system includes agitator 6, delivery pump 7, conjunction Jie's bucket 8, closes the pump 15 that is situated between, closes Jie
The outlet of pipe 16, level stream pipeline 17 and upper up-flow pipeline 18, the agitator 6 is connected by pipeline with the import of delivery pump 7,
The outlet of the delivery pump 7 is connected by pipeline with the import for closing Jie's bucket 8, and the outlet for closing Jie's bucket 8, which passes through pipeline and closes, to be situated between
The import of pump 15 connects, and the outlet of conjunction Jie pump 15 is connected by pipeline with the one end for closing Jie's pipe 16, conjunction Jie's pipe 16
The other end connects with one end of level stream pipeline 17 and upper up-flow pipeline 18, the other end of the upper up-flow pipeline 18 and outside
The magnetic iron ore dense media that the upper up-flow import of 10 lower part of groove body connects and upper up-flow pipeline 18 conveys promotes in intranet bucket 11
Coal is loosely layered, and upper up-flow valve 18-1 is equipped on the upper up-flow pipeline 18;The other end of the level stream pipeline 17
Connect with the level stream import on external 10 top of groove body and the magnetic iron ore dense media of the conveying of level stream pipeline 17 promotes after being layered
External groove body 10 is discharged by overflow weir 14 in float coal, and level stream valve 17-1, the water are equipped on the level stream pipeline 17
The height of advection import is higher than the upper limb of intranet bucket 11, and Jie's bucket 8 that closes is by closing Jie's return pipe 38 and external groove body 10
Lower part connects.
As shown in Figure 1, being connected with for conveying high-pressure wind at the air hose mouth of 10 lower part of the external groove body to promote coal
The air hose 19 being further layered, air-valve 19-1 is equipped on the air hose 19, and the height of the air hose mouth is higher than the upper up-flow
The height of import and the height for being lower than the level stream import.
As shown in Figure 1, the level stream import is located at the side of external groove body 10, the overflow weir 14 is located at external groove body
10 other side, the level stream import are oppositely arranged with overflow weir 14, the feed inlet of the intranet bucket 11 and the level
It flows into mouth and is located at the same side.
As shown in Figure 1, the de-mediated mechanism includes sculping screen 20, rinses head 23, dilute Jie's bucket 21 and magnetic separator 22, it is described
Sculping screen 20 be obliquely installed and the outlet end of sculping screen 20 be lower than sculping screen 20 input end, the import of the sculping screen 20 and overflow
Stream weir 14 connects, and the sculping screen 20 closes Jie's section 20-1 close to one section of overflow weir 14, and the sculping screen 20 is far from overflow weir
One section of 14 is dilute Jie's section 20-2;The flushing head 23, which is mounted on 20 top of sculping screen and is located at, closes Jie's section 20-1 and dilute Jie's section
Dilute Jie outlet of the joint 20-2, dilute bottom Jie's section 20-2 is connected by pipeline with the import of dilute Jie's bucket 21, dilute Jie
Bucket 21 outlet connect by pipeline with the import of magnetic separator 22, it is described close the bottom Jie's section 20-1 conjunction be situated between export pass through pipeline and
The import for closing Jie's bucket 8 connects.
Wherein, sculping screen 20 is vibration sculping screen, level stream pipeline 17, upper up-flow pipeline 18, air hose 19 and scraper mechanism
Float coal is expelled on the sculping screen 20 of next link by 31 common cooperations, and the overturning flashboard 12 of external 10 bottom of groove body passes through opening and closing
Mechanism opens and closes, for spoil to be discharged.
As shown in Figure 1, the cleaned coal collecting mechanism includes traction electric machine 24, track 25 and cleaned coal Material collecting box for harvesting 26, the essence
The quantity of coal Material collecting box for harvesting 26 is that multiple and multiple cleaned coal Material collecting box for harvesting 26 are arranged on track 25, and the traction electric machine 24 is by leading
Messenger is connected from multiple cleaned coal Material collecting box for harvesting 26 and drives multiple cleaned coal Material collecting box for harvesting 26 different close to collect along the operation of track 25
The cleaned coal of degree.
24 class of traction electric machine drives multiple cleaned coal Material collecting box for harvesting 26 to walk in track 25 according to discharge density requirement, will be right
The cleaned coal Material collecting box for harvesting 26 of density is answered to be moved to the outlet end splicing of sculping screen 20.
In the present embodiment, as shown in Figure 1, the track 25 is rectilinear orbit.
As shown in Fig. 2, the inside of the external groove body 10 and being equipped with close to the side of overflow weir 14 for by external slot
Float coal in body 10 scrapes the scraper mechanism 31 into sculping screen 20, and the scraper mechanism 31 includes variable-frequency motor 28, shaft 29 and scrapes
The output shaft of knife 30, the variable-frequency motor 28 is fixedly connected with one end of shaft 29, and the scraper 30 is fixedly mounted on shaft 29
On, the shaft 29 is located in external groove body 10 and is rotatablely connected with external groove body 10, and the variable-frequency motor 28 is mounted on outside
On the lateral wall of groove body 10.
When work, shaft 29 is driven to rotate by variable-frequency motor 28, shaft 29 drives scraper 30 to scrape float coal to overflow weir 14
Place.
As shown in figure 3, the mechanism for opening/closing includes two the first flashboard regulating mechanisms 36 and the second flashboard being oppositely arranged
Regulating mechanism 37, the first flashboard regulating mechanism 36 is identical with the structure of the second flashboard regulating mechanism 37 and includes overturning electricity
The output shaft of machine 32, lead screw 34, nut 33 and upset connecting rod 35, the overturning motor 32 is fixedly connected with the upper end of lead screw 34,
The nut 33 is set in lead screw 34 and is threadedly engaged with lead screw 34, and the upset connecting rod 35 is hollow structure, the lead screw 34
It is respectively positioned in upset connecting rod 35 with nut 33, the nut 33 connects by the way that the upper inside wall of connecting rod 27 and upset connecting rod 35 is fixed
Connect, the lower end of the upset connecting rod 35 of the first flashboard regulating mechanism 36 and the second flashboard regulating mechanism 37 respectively with overturning flashboard
The lower part of 12 two rotating sheets is hinged, and the upper end of the rotating sheet and the bottom of intranet bucket 11 are hinged, the overturning
The lower part of connecting rod 35 is arranged in intranet bucket 11, and the overturning motor 32 is fixed on external groove body 10 by mounting rod.
Acted by the first flashboard regulating mechanism 36 and the second flashboard regulating mechanism 37 so that overturning flashboard 12 open or
It closes.Specific: the overturning rotation of motor 32 drives lead screw 34 to rotate, then nut 33 moves up and down, and nut 33 passes through connecting rod 27
It is connect with upset connecting rod 35, so that upset connecting rod 35 be made to move downward, overturning flashboard 12 is pushed open downwards, that is, opens overturning flashboard
12。
In the present embodiment, the sieve diameter of the desliming screen 1 is 0.5mm, the top major trough body of the external groove body 10
Length L is 700mm, width B is 500mm, height H is 500mm, and the volume of external groove body 10 is 0.17m3, coal sample can be accommodated
100kg or more.
The working principle of the present embodiment are as follows: will be given to floating experiment coal sample in desliming screen 1, coal sample passes through belt after desliming
Feeder 2 is fed in storage vat 3, then opens electric brake plate valve 5, then coal sample falls into batcher 4, is delivered to by batcher 4
In sorting groove.
Qualified magnetite powder is fed in agitator 6 with a certain amount of coal slime and is stirred and evenly mixed, required density is prepared into
(can be different density according to needs of production, as density is 1.3kg/L, 1.4kg/L, 1.5kg/L, 1.6kg/L,
1.7kg/L, 1.8kg/L etc.) magnetic iron ore dense media, but the primary magnetic iron ore dense media for only giving a density value.It prepares
Magnetic iron ore dense media is delivered to by delivery pump 7 and closes Jie's bucket 8, then feeds conjunction Jie's pipe 16 by closing the pump 15 that is situated between, then feed respectively
Level stream pipeline 17 and upper up-flow pipeline 18.The magnetic iron ore dense media conveyed in upper up-flow pipeline 18 enter after external groove body 10 with
Enter intranet bucket 11 afterwards to promote the coal in intranet bucket 11 to be loosely layered, less than the coal meeting of the magnetic iron ore density of heavy medium
It floats, the coal greater than the magnetic iron ore density of heavy medium can sink (Archimedes principle), such as feed the magnet that density is 1.3kg/L
Mine dense media, then the density of upper float coal is less than 1.3, referred to as -1.3kg/L, the cleaned coal collection of splicing after last 20 de-mediated of sculping screen
Hopper is -1.3 cleaned coal Material collecting box for harvesting;It is such as 1.5kg/L magnetic iron ore dense media using density, then after last 20 de-mediated of sculping screen
The cleaned coal Material collecting box for harvesting of splicing is -1.5 cleaned coal Material collecting box for harvesting.The magnetic iron ore dense media that level stream pipeline 17 conveys enters external groove body 10
External groove body 10 is discharged by overflow weir 14 by overflow weir 14 in float coal (light product) after promoting layering;Scraper 30 can the row of auxiliary
The air hose 19 of material, external 10 lower part of groove body connection controls intake by air-valve 19-1, is acted on using high-pressure blast and further being promoted
The layering of coal.
Float coal, that is, cleaned coal is discharged to progress dense media removing on sculping screen 20, and the dense media of front half section removing is not plus water is still
Qualified medium (closes and is situated between), continues to use back to closing in Jie's bucket 8, by flushing head 23 plus sprays in the upper center of sculping screen 20
Water further removes medium, and adding after water is dilute medium, flows to dilute Jie's bucket 21, then to the further dehydration recycling magnet of magnetic separator 22
Miberal powder, the magnetite powder of recycling can continue on for preparing magnetic iron ore dense media.
Cleaned coal is discharged from the discharge end of sculping screen 20, is drawn the cleaned coal Material collecting box for harvesting 26 of corresponding density by traction electric machine 24
To collect cleaned coal below to the discharge end of sculping screen 20.After cleaned coal is discharged, the gate valve 13 of 10 bottom of external groove body is opened, then
Magnetic iron ore dense media is by closing the gravity flow of Jie's return pipe 38 back to conjunction Jie's bucket 8;The movement of motor 32 is afterwards turned over, upset connecting rod is driven
35 move up and down, and make to overturn the opening of flashboard 12, then sink to the coal i.e. spoil of lower part after sorting groove layering, be discharged to spoil bucket
It is collected in 9, to complete entire float-sink test process.
Embodiment 2
As shown in figure 4, the present embodiment is unlike the first embodiment: the track 25 is rectilinear orbit.In the present embodiment,
The structure of rest part, connection relationship and working principle are same as Example 1.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to the utility model technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still
Belong in the protection scope of technical solutions of the utility model.