CN215313800U - Coal dressing device - Google Patents

Abstract

The utility model discloses a coal dressing device, which comprises: the screening box is provided with a feed inlet and a discharge outlet between the top end and the bottom end of the screening box in sequence; the at least two sieve frames penetrate through the screening box and are sequentially arranged between the feed port and the discharge port at intervals according to the decreasing sequence of sieve pores; the first beating mechanism is arranged between the discharge opening and the sieve frame, and is used for beating the sieve frame. The utility model discloses a coal dressing device, which solves the problem that the screening effect of the existing coal dressing device on coal cinder is not ideal.

Description

Coal dressing device

Technical Field

The utility model relates to the technical field of coal preparation equipment, in particular to a coal preparation device.

Background

Coal is the most important solid fuel, and can be divided into peat, lignite, bituminous coal and anthracite according to the coal gasification degree; raw coal mined from a coal mine needs to be subjected to screening treatment by a coal dressing device, coal cinder exists in the screening process, and if the coal cinder cannot be separated out, the coal cinder and coal with the minimum granularity are mixed together, so that the usability of the coal with the minimum granularity is poor.

Therefore, a coal dressing device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a coal separation device, so as to solve the problem that the screening effect of the existing coal separation device on coal cinder is not ideal.

The utility model provides a coal dressing device based on the above purpose, comprising:

the screening box is provided with a feed inlet and a discharge outlet between the top end and the bottom end of the screening box in sequence;

the at least two sieve frames penetrate through the screening box and are sequentially arranged between the feed port and the discharge port at intervals according to the decreasing sequence of sieve pores;

the first beating mechanism is arranged between the discharge opening and the sieve frame, and is used for beating the sieve frame.

Preferably, each of the frames is inclined to penetrate through the screening box, and the inclination directions of two adjacent frames are opposite.

Preferably, the first striking mechanism includes: support frame and at least one are connected first hitting the pole on the support frame, the support frame portable connection is in the screening incasement, the support frame drives first hitting pole reciprocating motion to hit and beat the sifter of bank of screens.

Preferably, the first striking mechanism further comprises: the driving unit is connected with the supporting frame so as to drive the supporting frame to rotate in a reciprocating manner; each cam is connected to the support frame and rotates in a reciprocating mode along with the support frame; be provided with the sliding tray that extends along circumferential direction on the cam, the uide bushing with but sliding tray sliding connection, and the cover is established on the first pole of beating, the first pole of beating can along uide bushing reciprocating motion.

Preferably, one end of the first striking rod, which faces the screening surface, is provided with a protective layer.

Preferably, a bracket is arranged outside the screening box, and the driving unit is arranged on the bracket.

Preferably, at least one second striking mechanism is arranged in the screening box and used for striking the frame of the screen frame.

Preferably, the second striking mechanism comprises: the second beating rod and the second driving unit are movably connected with the screening box, and the second driving unit drives the second beating rod to reciprocate.

Preferably, the coal preparation device comprises: the feeding guide hopper is connected with the screening box and is arranged opposite to the feeding port.

In addition, preferably, the coal preparation device comprises: the slag collecting box is arranged opposite to the discharge opening.

From the above, the coal dressing device provided by the utility model has the following advantages compared with the prior art: adopt above-mentioned coal dressing device, through setting up the different screen frames of a plurality of sieve meshes, screen the coal cinder of different granularities, at the screening process, to the screen frame that is used for screening the cinder, through hitting actions such as beating to the screen frame for the cinder is separated with the little coal of granularity, collects respectively cinder and the little coal of granularity, and then improves out the coal quality.

Drawings

The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic view of a coal preparation apparatus employed in an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a coal preparation apparatus B shown in fig. 1.

Fig. 3 is a schematic sectional view a-a of the coal preparation apparatus shown in fig. 1.

Fig. 4 is a partially enlarged schematic view of the coal preparation apparatus shown in fig. 3 at C.

Wherein the reference numbers:

1. a screening box; 2. a feeding guide hopper; 3. a first screen frame; 4. a second screen frame; 5. a drive unit; 6. a cam; 6-1, a sliding groove; 7. a support frame; 8. a guide sleeve; 8-1, a guide groove; 9. a first striking rod; 10. a slag collection box; 11. a guide block; 12. a sliding projection; 13. a limiting block; 14. a protective layer; 15. a second striking mechanism; 15-1, a push-pull rod; 15-2, a support rod; 15-3, a rotating rod; 15-4, a guide frame; 15-5, slotting; 15-6, a guide groove; 15-7, a guide shaft; 15-8 and a second striking rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings. The terms "inner" and "outer" are used to refer to directions toward and away from, respectively, the geometric center of a particular component.

FIG. 1 is a schematic view of a coal preparation apparatus employed in an embodiment of the present invention. As shown in fig. 1, the coal dressing apparatus includes a screening box 1, at least two screen frames, and a first striking mechanism.

A feed inlet and a discharge outlet are sequentially arranged between the top end and the bottom end of the screening box 1;

at least two sieve frames penetrate through the screening box 1 and are sequentially arranged between the feed inlet and the discharge outlet at intervals according to the decreasing sequence of sieve pores;

first mechanism of beating sets up between discharge opening and bank of screens, and first mechanism of beating is used for beating the bank of screens.

The quantity of screen frame is selected according to the height and the screening requirement of screening case 1, and the sieve mesh of every screen frame is different to carry out the screening to the coal cinder of different granularities. Typically, the screen frame located closest to the discharge opening is used to screen out coal fines and coal of small particle size. Thus, the striking mechanism is arranged below and/or to the side of the sieve frame closest to the discharge opening to strike the sieve frame. Coal blocks and coal slag with various granularities enter the screening box 1 from the feed inlet, the materials fall on the uppermost screen frame, the particle size is larger than the screen hole, and the materials continue to move along the screen frame; the particles with the particle size smaller than the sieve pores fall on the sieve frame below the particles, and the sieving is continued. When the screen frame is arranged at the lowest part, the screen frame is provided with coal cinder and coal blocks with small granularity, the first beating mechanism is started to beat the screen frame at the lowest part, so that the screen frame vibrates, the coal cinder falls at the discharge opening, and the coal blocks with small granularity continuously move along the screen frame.

Adopt above-mentioned coal dressing device, through setting up the different screen frames of a plurality of sieve meshes, screen the coal cinder of different granularities, at the screening process, to the screen frame that is used for screening the cinder, through hitting actions such as beating to the screen frame for the cinder is separated with the little coal of granularity, collects respectively cinder and the little coal of granularity, and then improves out the coal quality.

In this embodiment, the top of screening case 1 is provided with the feed inlet, the discharge opening is located screening case 1's bottom, the bank of screens is along controlling the lateral wall setting in screening case 1, and outside one end extends to screening case 1, the feed end of every bank of screens is located screening case 1's inside, the discharge end stretches out screening case 1's outside, be provided with the chamber door on screening case 1, be located screening case 1's preceding lateral wall usually, fall from the bank of screens when the cinder, fall in screening case 1's bottom, open the chamber door, clear away the cinder.

In this embodiment, it has two screen frames to run through in the screening case 1 to be connected with, is first screen frame 3 and second screen frame 4 from feed inlet to discharge opening respectively, and the sieve mesh of first screen frame 3 is greater than the sieve mesh of second screen frame 4, and the coal cinder that the granularity is big is held back on first screen frame 3, and the coal cinder that the cinder and the granularity are little falls on second screen frame 4 from first screen frame 3, hits the mechanism setting of beating between second screen frame 4 and discharge opening, hits the mechanism and is used for hitting second screen frame 4 for cinder and coal cinder separation. A plurality of sieve frames with different sieve holes can be arranged between the first sieve frame 3 and the second sieve frame 4 so as to refine the particle size of the screened coal.

Preferably, each screen frame is inclined throughout the screen box 1, with the inclination of adjacent two frames being in opposite directions. One end of each screen frame is lapped in the screening box 1, the other end of each screen frame extends out of the screening box 1, and the screen surface of each screen frame covers the blanking points. The screen surfaces of the screen frames are mutually overlapped, so that a screening blind area is avoided; set up adjacent reel into extension opposite direction for the ejection of compact position of different reels is different, conveniently collects.

In this embodiment, be provided with two frames in screening case 1, be first frame 3 and second frame 4 in proper order, first frame 3 is the high slope in the low right side in screening case 1, and second frame 4 is the low slope in the high right side in screening case 1.

Fig. 2 is a partially enlarged schematic view of a coal preparation apparatus B shown in fig. 1. As shown in fig. 2, the first striking mechanism includes a support 7 and a first striking rod 9.

Preferably, the first striking mechanism comprises: support frame 7 and at least one first pole 9 of beating of connecting on support frame 7, support frame 7 movable connection are in screening case 1, and support frame 7 drives first pole 9 reciprocating motion of beating to beat the sifter of bank of screens. Support frame 7 provides the supporting role for first hitting pole 9, and drives first hitting pole 9 reciprocating swing or rotation for first hitting pole 9 reciprocates in the direction of height of screening case 1, can reciprocate hit and beat the sifter, makes the sifter produce the vibration, so that effectively separate the coal cinder and the little coal of granularity. The first striking mechanism is simple in structure, easy to operate and good in vibration effect.

In this embodiment, the support frame 7 includes a support rod to which the first striking rod 9 is attached. The number of the first striking rods 9 is plural, for example, three, and the plural first striking rods 9 are distributed on the support frame 7 at equal intervals. When the screen frame is obliquely arranged, if the screen frame is obliquely arranged in the screening box 1 in a left-high-right manner, the heights of the first striking rods 9 are sequentially reduced from left to right when the supporting rods are horizontally arranged; when the support bars are placed parallel to the screen frame, the heights of the plurality of first striking bars 9 are the same.

Preferably, the first striking mechanism further comprises: the device comprises a driving unit 5, at least one cam 6 and at least one guide sleeve 8, wherein the driving unit 5 is connected with a support frame 7 so as to drive the support frame 7 to rotate in a reciprocating manner; each cam 6 is connected to a support frame 7 and rotates back and forth along with the support frame 7; the cam 6 is provided with a sliding groove 6-1 extending along the circumferential direction, the guide sleeve 8 is slidably connected with the sliding groove 6-1 and sleeved on the first striking rod 9, and the first striking rod 9 can reciprocate along the guide sleeve 8. Drive unit 5's output shaft stretches into screening case 1 in, support frame 7 is including relative first bracing piece and the second bracing piece that sets up, first bracing piece and output shaft, cam 6 is connected on the first bracing piece that is located the below, first bracing piece is rotatable in screening case 1, uide bushing 8 is connected on the second bracing piece that is located the top, the second bracing piece can be fixed in screening case 1, first hitting is beaten in pole 9 stretches into uide bushing 8, and can be along 8 reciprocating motion of uide bushing. The guide sleeve 8 or the first striking rod 9 is provided with a sliding projection 12, and the sliding projection 12 can be connected in the sliding groove 6-1 of the cam 6 and slide along the sliding groove 6-1. The driving unit 5 drives the first supporting rod to drive the protrusion to rotate, the sliding groove 6-1 drives the sliding protrusion 12 to move, the first hitting rod 9 can move in a reciprocating mode in the height direction, the first hitting mechanism can hit the screen surface in a reciprocating mode, coal cinder in the screen net can fall downwards through the screen net, and the screening effect is improved.

In this embodiment, the cams 6 are multiple, three cams 6 are sequentially sleeved on the first support rod at equal intervals, and three guide sleeves 8 are sequentially arranged at corresponding positions of the second support rod.

In another embodiment of the application, a first striking rod 9 penetrates through the guide sleeve 8 in a sliding manner, guide grooves 8-1 are formed in the inner walls of the left side and the right side of the guide sleeve 8, guide blocks 11 are fixedly welded on the left side and the right side of the first striking rod 9, the guide blocks 11 are arranged in the guide grooves 8-1 in a sliding manner, limiting blocks 13 are fixedly arranged on the upper side and the lower side of the guide grooves 8-1, the guide blocks 11 are limited through the limiting blocks 13, and the guide blocks 11 are prevented from being separated from the guide grooves 8-1 when moving. At this time, the slide projection 12 is provided on the first striking rod 9.

Preferably, the first striking rod 9 is provided with a protective layer 14 towards the screening surface. By arranging the protective layer 14 to wrap the first striking rod 9, when the first striking rod 9 strikes the screen surface, the screen surface can be prevented from being scratched and abraded, and the screening effect can be prevented from being influenced.

In this embodiment, first beating pole 9 is equipped with the protective sheath towards sifter one pot head, and the protective sheath can be pasted on first beating pole 9, avoids in the use, and the protective sheath takes place to squint or drops.

Preferably, a support is arranged outside the screening box 1, and the drive unit 5 is arranged on the support. The support provides a supporting function for the driving unit 5 so that the driving unit 5 can stably operate.

In this embodiment, the bracket is disposed outside the right side wall of the screen box 1. The bracket is L-shaped or triangular.

Fig. 3 is a schematic sectional view a-a of the coal preparation apparatus shown in fig. 1. Fig. 4 is a partially enlarged schematic view of the coal preparation apparatus shown in fig. 3 at C. As shown in fig. 3 and 4, the coal preparation device further includes a second striking mechanism 15.

Preferably, at least one second striking mechanism 15 is arranged in the screening box 1, and the second striking mechanism 15 is used for striking the frame of the screen frame. The second striking mechanism 15 strikes the frame of the screen frame in a reciprocating manner, so that the screen surface vibrates, thereby effectively separating coal cinder and coal with small particle size.

In this embodiment, the quantity of mechanism 15 is hit to the second is a plurality of, and a plurality of second hit hits mechanism 15 and encloses second reel 4 evenly distributed on screening case 1 tank wall, and a plurality of second hit mechanism 15 are connected respectively on screening case 1's the front and back both sides lateral wall, and are mirror symmetry distribution, and can the synchronization action.

In another embodiment of the application, each frame is provided with a second striking mechanism 15 in the circumferential direction.

Preferably, the second striking mechanism 15 includes: a second beating rod 15-8 and a second driving unit, wherein the second beating rod 15-8 is movably connected with the screening box 1, and the second driving unit drives the second beating rod 15-8 to reciprocate. The second driving unit drives the second beating rods 15-8 to strike the screen frame in a reciprocating mode, so that the screen surface vibrates, and coal cinder and coal with small particle size are effectively separated. The second striking mechanism 15 has a simple structure, is easy to operate and has a good vibration effect.

In the embodiment, a push-pull rod 15-1 and a support rod 15-2 are oppositely arranged on the wall of the screening box 1, the push-pull rod 15-1 is fixed by screws, the support rod 15-2 is fixed by welding, a rotating rod 15-3 is rotatably connected to the free end of the support rod 15-2, the free end of the rotating rod 15-3 is connected with a guide frame 15-4, and a second striking rod 15-8 is fixed to the free end of the guide frame 15-4. The guide frame 15-4 is internally provided with a slot 15-5, the pushing end of the push-pull rod 15-1 penetrates through the slot 15-5, guide slots 15-6 are formed in the guide frame 15-4 on the upper side and the lower side of the slot 15-5 in a penetrating manner, the pushing end of the push-pull rod 15-1 is fixed with guide shafts 15-7 in an up-and-down symmetrical welding manner, the two guide shafts 15-7 are arranged in the corresponding guide slots 15-6 in a sliding manner respectively, and the push-pull rod 15-1 pushes the guide frames 15-4 to rotate around the rotating rod 15-3, so that the second striking rod 15-8 is driven to strike the sieve frame. Wherein the push-pull rod 15-1 can be electrically driven.

Preferably, the coal preparation device comprises: feeding direction fill 2, feeding direction fill 2 is connected with screening case 1, and sets up with the feed inlet relatively. Feeding direction is fought 2 and is got into screening case 1 for the material and provide the guide effect for the material can fall smoothly on the bank of screens.

In this embodiment, feeding guide hopper 2 sets up in the right side lateral wall top of screening case 1, and feeding guide hopper 2's discharge end and feed inlet dock.

In addition, preferably, the coal preparation device comprises: the slag collecting box 10 is arranged opposite to the discharge opening of the slag collecting box 10. Cinder that the screen frame dropped can directly fall into in the collection sediment case 10, conveniently collects the back centralized processing.

In the embodiment, the slag collecting box 10 is positioned on the inner bottom plate of the screening box 1, and when in collection, the box door is closed to form a relatively closed space; after collection, the chamber door is opened and the slag collection chamber 10 and the coal slag are removed.

The use of the coal preparation device is further described below.

Coal blocks and coal slag with various particle sizes enter the screening box 1 from the feeding guide hopper 2 through the feeding hole, the material falls on the first screen frame 3, the particle size is larger than that of the screen hole, and the material continuously moves to the outside of the screening box 1 along the first screen frame 3 to be discharged; the particles with the particle diameter smaller than the sieve pores fall on the second sieve frame 4, and the sieving is continued. When cinder and the little coal cinder of granularity fall on second bank of screens 4, start first hitting and beat mechanism and second and hit 15 hitting and beat second bank of screens 4 for second bank of screens 4 produce the vibration, the cinder falls in the relative collection cinder box 10 of discharge opening, and the less coal cinder of granularity will continue to remove to screening case 1 outside along the bank of screens and unload.

The first striking mechanism initiation process includes: an output shaft of the driving unit 5 drives the first supporting rod to drive the cam 6 to rotate, the cam 6 drives the sliding protrusion 12 to move through the sliding groove 6-1, and therefore the first hitting rod 9 can reciprocate along the guide sleeve 8 fixed on the second supporting rod to hit the screen surface.

The second striking mechanism 15 is activated by: the push-pull rod 15-1 pushes the two guide shafts 15-7 to respectively slide in the corresponding guide grooves 15-6, and the guide frame 15-4 is driven to rotate around the rotating rod 15-3 in a reciprocating mode, so that the second striking rod 15-8 is driven to strike the screen frame, striking strength is enhanced, and coal cinder in the screen net can rapidly drop.

From the above description and practice, it can be seen that the coal dressing device provided by the present invention has the following advantages compared with the prior art: adopt above-mentioned coal dressing device, through setting up the different screen frames of a plurality of sieve meshes, screen the coal cinder of different granularities, at the screening process, to the screen frame that is used for screening the cinder, through hitting actions such as beating to the screen frame for the cinder is separated with the little coal of granularity, collects respectively cinder and the little coal of granularity, and then improves out the coal quality.

Those of ordinary skill in the art will understand that: the above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A coal preparation apparatus, comprising:

the screening box is provided with a feed inlet and a discharge outlet between the top end and the bottom end of the screening box in sequence;

the at least two sieve frames penetrate through the screening box and are sequentially arranged between the feed port and the discharge port at intervals according to the decreasing sequence of sieve pores;

the first beating mechanism is arranged between the discharge opening and the sieve frame, and is used for beating the sieve frame.

2. The coal preparation device of claim 1, wherein:

each screen frame all inclines to run through the screening case, and the inclination direction of two adjacent screen frames is opposite.

3. The coal preparation device of claim 2, wherein:

the first striking mechanism includes: support frame and at least one are connected first hitting the pole on the support frame, the support frame portable connection is in the screening incasement, the support frame drives first hitting pole reciprocating motion to hit and beat the sifter of bank of screens.

4. The coal preparation device of claim 3, wherein:

the first striking mechanism further comprises: the driving unit is connected with the supporting frame so as to drive the supporting frame to rotate in a reciprocating manner; each cam is connected to the support frame and rotates in a reciprocating mode along with the support frame; be provided with the sliding tray that extends along circumferential direction on the cam, the uide bushing with but sliding tray sliding connection, and the cover is established on the first pole of beating, the first pole of beating can along uide bushing reciprocating motion.

5. The coal preparation apparatus according to claim 3 or 4, wherein:

and a protective layer is arranged at one end of the first striking rod, which faces the screen surface.

6. The coal preparation device of claim 5, wherein:

the screening case is provided with the support outward, drive unit sets up on the support.

7. The coal preparation apparatus according to any one of claims 1 to 4, wherein:

at least one second striking mechanism is arranged in the screening box and used for striking the frame of the screen frame.

8. The coal preparation device of claim 7, wherein:

the second striking mechanism includes: the second beating rod and the second driving unit are movably connected with the screening box, and the second driving unit drives the second beating rod to reciprocate.

9. The coal preparation apparatus according to any one of claims 1 to 4, wherein:

the coal dressing device comprises: the feeding guide hopper is connected with the screening box and is arranged opposite to the feeding port.

10. The coal preparation apparatus according to any one of claims 1 to 4, wherein:

the coal dressing device comprises: the slag collecting box is arranged opposite to the discharge opening.

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