CN113996387A

CN113996387A - Coking coal selected raw material coal pre-screening device

Info

Publication number: CN113996387A
Application number: CN202111303290.3A
Authority: CN
Inventors: 刘思思
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-02-01

Abstract

The invention discloses a pre-screening device for coking coal selected raw material coal, which relates to the field of coal mining and aims at solving the problems that the screening efficiency of the existing coking coal is low, a screen is easy to block, and screened large-particle coal blocks cannot be subjected to secondary treatment and screening. The invention can crush and screen the coking coal without stopping the machine, avoid the blockage of the sieve holes by the up-and-down vibration of the sieve plates, and can perform secondary treatment on large-particle coal blocks which are not completely crushed, thereby effectively improving the screening efficiency of the coking coal.

Description

Coking coal selected raw material coal pre-screening device

Technical Field

The invention relates to the field of coal mining, in particular to a pre-screening device for coking coal selected raw material coal.

Background

Coking coal is a bituminous coal which has a certain caking property and can be coked under the coking condition of a chamber coke oven, and raw material coal for producing coke with a certain quality is called coking coal in general. According to the classification standard of coal in China, poor lean coal, coking coal, fat coal, 1/3 coking coal, gas fat coal, gas coal and 1/2 sticky coal in the bituminous coal belong to coking coal. As the name suggests, coking coals are mainly used for cokes, and are generally classified into metallurgical cokes, gasification cokes, cokes for calcium carbide and the like according to the purposes. The production of coking coal is directly related to heavy industrial departments such as metallurgy, coal chemical industry and the like and partial industries such as electric power, urban gas and the like, has important influence on long-term development of the whole national industrial system and people's life, and coal is a non-renewable resource, and from the aspects of scientific, harmonious and sustainable development of national economy and society, reasonable development scale and protection of the coal must be researched.

When using coking coal as raw materials coal to carry out coke production, need sieve the processing to coking coal, thereby can guarantee that the particle size of raw materials coal is close, improve coke production efficiency, and lead to the screen cloth to block up easily at coking coal screening in-process, thereby cause its screening efficiency lower, and can't carry out the secondary treatment screening with the large granule coal cinder after the screening in step, need shut down and carry out follow-up operation, consequently, in order to solve this type of problem, we have proposed a coking coal income raw materials coal pre-screening plant.

Disclosure of Invention

The pre-screening device for the coking coal selected raw material coal provided by the invention solves the problems that the existing coking coal screening efficiency is low, a screen is easy to block, and large-particle coal blocks after screening cannot be subjected to secondary treatment and screening.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pre-screening device for coking coal selected raw material coal comprises a screening box with an open top end, wherein two sides of the screening box are respectively provided with a limiting groove and a first discharge port, a screen plate is movably mounted in the screening box, two ends of the screen plate respectively penetrate through the limiting groove and the first discharge port, and a plurality of spring columns with the same structure are fixedly connected between the bottom end of the screen plate and the inner wall of the bottom end of the screening box;

the both sides inner wall of screening case rotates installs two crushing rollers that the structure is the same, one side fixed mounting of screening case has the mounting bracket that is the L type, just one side fixed mounting that the vertical section of mounting bracket is close to the screening case has driving motor, the both sides of screening case all be equipped with through driving motor drive and with sieve and crushing roller complex actuating mechanism.

Preferably, the sieve plate is arranged in an inclined mode, the cross section of the sieve plate is arranged in an arc mode, and a plurality of sieve pores which are evenly distributed are formed in a plate body of the sieve plate.

Through adopting above-mentioned technical scheme, the coking coal that will wait to sieve drops into inside the screening case, and driving motor is through driving actuating mechanism operation for two crushing rollers rotate and carry out crushing treatment to the coking coal, and carry out screening treatment to the coking coal after the breakage through the sieve of crushing roller below.

As preferred, actuating mechanism includes driving-disc, rack plate, movable block, pinion disc and pinion disc, driving-disc has been cup jointed to driving motor's output shaft, just the equal fixedly connected with movable block in both sides of sieve, the top fixedly connected with rack plate of movable block, half of driving-disc circumference lateral wall is provided with the tooth piece, just tooth piece and the meshing of rack plate on the driving-disc.

Preferably, the two sides of the screening box are provided with movable grooves which are symmetrically distributed, and the movable blocks are slidably mounted inside the movable grooves.

Through adopting the above technical scheme, driving motor can drive the driving-disc and rotate, make the rack interlock on the rack board of the tooth piece of its circumference lateral wall, thereby can make the rack board drive the movable block and slide in the movable slot inside, the movable block drives the sieve downstream simultaneously, the sieve can extrude the spring post, when the tooth piece on the driving-disc breaks away from with the tooth piece on the rack board, the spring post reverse promotion sieve this moment, make it drive the movable block at the inside reverse slip of movable slot, and reverse promotion rack board, the tooth piece on until the driving-disc again with the tooth piece interlock on the rack board, repeat the above-mentioned operation, can make the sieve do reciprocal vibrations from top to bottom from this, can effectively prevent the sieve jam, and the movable slot can guarantee the stability of reciprocal vibrations from top to bottom of sieve to the spacing of movable block.

Preferably, the rotating shafts of the two crushing rollers close to one end of the driving motor extend to the inner part of the side wall of the screening box and are fixedly connected with a main gear disc and an auxiliary gear disc respectively, the end part of the output shaft of the driving motor extends to the inner part of the side wall of the screening box and is fixedly connected with the main gear disc, and the main gear disc is meshed with the auxiliary gear disc.

Preferably, the material returning box is fixedly connected with the screening box, a material guiding opening and a second discharging opening are formed in one side, close to the screening box, of the material returning box, the material guiding opening is located above the second discharging opening, and the second discharging opening is communicated with the first discharging opening.

Through adopting above-mentioned technical scheme, because the sieve is the slope setting, so the large granule coal cinder of sieve screening can enter into the bottom of feed back case through first discharge gate and second discharge gate.

Preferably, the feed back box is located the inboard fixedly connected with of guide mouth and is the stock guide that the slope set up, just the stock guide is located the top of screening case, and the incline direction sets up towards the screening case.

Through adopting above-mentioned technical scheme, the stock guide can make to promote the large granule coal cinder that comes to export through the lift case and can carry out secondary treatment through the stock guide reentrant screening incasement portion.

As preferred, rotate between the both sides inner wall of feed back case and install two driving rollers that are the symmetric distribution, and two be connected with the lifting belt between the driving roller, the surface rotation of lifting belt installs a plurality of evenly distributed and the same lifting box of structure.

Preferably, the transmission roller that is located the below is close to the pivot of driving motor one side and runs through the lateral wall of feed back case, and extends to its outside fixedly connected with secondary belt pulley, driving motor's the fixed cover of output shaft has connect main belt pulley, just be connected with driving belt between main belt pulley and the secondary belt pulley.

Through adopting above-mentioned technical scheme, driving motor drives the belt pulley rotation and can make vice belt pulley rotate thereupon, makes the driving roller drive the elevator belt operation then for the elevator box can upwards lifting large granule coal cinder after the feed back bottom of the case end completion is feeded.

Preferably, one side inner wall of the lifting box is inclined.

Through adopting above-mentioned technical scheme, lifting box one side inner wall is the slope setting for when the lifting belt drives lifting box motion to the lifting belt highest point, the convenient ejection of compact of the large granule coal cinder of lifting box inside enters into the inside crushing screening once more of screening case through the stock guide.

The invention has the beneficial effects that:

1. drive the rotation of the inside toothed disc of screening case lateral wall through driving motor to make the toothed disc can drive two crushing roller rotations, carry out quick crushing processing to the coking coal that enters into screening incasement portion, and can carry out effectual screening operation to it through the sieve that the screening incasement portion set up.

2. Through the rotation of driving-disc of driving motor drive, make half tooth piece and the meshing of rack board tooth piece of its circumference lateral wall, the setting of rethread spring post for reciprocating vibration about the sieve can be done, effectively avoid the sieve mesh on the sieve to block up, improve the efficiency of sieve to the coking coal screening after the breakage, it is spacing to the fly leaf through the movable groove simultaneously, make vibrations about it more stable.

3. Drive the rotation of main belt pulley and accessory pulley through driving motor, thereby can order about the driving roller and drive the lifting belt and promote the case motion, make the lifting box can retrieve by the leading-in not complete large granule coal cinder of breakage of sieve feed back incasement portion and promote the processing, and promote when the lifting belt is topmost, be the slope setting through lifting box one side inner wall, make its inside large granule coal cinder fall into the screening case once more via the stock guide and carry out broken screening processing, can accomplish the secondary treatment to the large granule coal cinder under the circumstances of not shutting down, effectively improve the screening efficiency of coking coal.

To sum up, the device can carry out crushing screening processing to the coking coal under the condition of not shutting down to vibrations from top to bottom through the sieve avoid the sieve mesh to block up, can carry out secondary treatment to the big granule coal cinder that does not break completely simultaneously, the effectual screening efficiency who improves the coking coal.

Drawings

FIG. 1 is a schematic structural view of a coking coal as-selected raw material coal pre-screening device according to the present invention;

FIG. 2 is an enlarged schematic structural view of A in FIG. 1 of a coking coal as-selected raw material coal pre-screening device according to the present invention;

FIG. 3 is a schematic view of the back side structure of a pre-screening device for coking coal as a selected raw material coal according to the present invention;

FIG. 4 is a top view of a coking coal as-selected feed coal pre-screening apparatus of the present invention;

FIG. 5 is a cross-sectional view of a coking coal as-selected feed coal pre-screening apparatus of the present invention;

FIG. 6 is an enlarged schematic structural view of B in FIG. 5 of a coking coal pre-screening device according to the present invention.

Reference numbers in the figures: 1. screening the box; 101. a sieve plate; 102. a limiting groove; 103. a movable groove; 104. a mounting frame; 105. a drive motor; 106. a primary pulley; 107. a drive disc; 108. a rack plate; 109. a movable block; 1010. a first discharge port; 1011. a crushing roller; 1012. a spring post; 2. returning the material tank; 201. lifting the box; 202. a lifting belt; 203. a material guide port; 204. a secondary pulley; 205. a second discharge port; 206. a driving roller; 3. a material guide plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The first embodiment is as follows:

referring to fig. 1, 3 and 5, the pre-screening device for coking coal selected raw material coal comprises a screening box 1 with an open top end, wherein two sides of the screening box 1 are respectively provided with a limiting groove 102 and a first discharge hole 1010, and the screening plate 101 is movably arranged in the screening box 1, the screening plate 101 is arranged in an inclined way, the cross section of the screening plate 101 is arranged in an arc shape, a plurality of uniformly distributed screening holes are arranged on the plate body of the screening plate 101, and both ends of the sieve plate 101 respectively penetrate through the limiting groove 102 and the first discharge hole 1010, a plurality of spring columns 1012 with the same structure are fixedly connected between the bottom end of the sieve plate 101 and the inner wall of the bottom end of the sieving box 1, by putting the coking coal to be screened into the screening box 1 and effectively filtering the coking coal through the screen plate 101 in the screening box 1, then, the large-particle coal blocks which are not sieved are led out through a first discharge hole 1010 by virtue of the sieve plate 101 which is arranged in an inclined manner;

referring to fig. 2 and 3, one side fixed mounting of screening case 1 has the mounting bracket 104 that is the L type, and one side fixed mounting that the vertical section of mounting bracket 104 is close to screening case 1 has driving motor 105, and the both sides of screening case 1 all are equipped with through driving motor 105 drive and with sieve 101 and crushing roller 1011 complex actuating mechanism, actuating mechanism includes driving-disc 107, rack plate 108, movable block 109, pinion disc and pinion disc.

Referring to fig. 4 and 5, two crushing rollers 1011 with the same structure are rotatably mounted on the inner walls of two sides of the screening box 1, the rotating shafts of the two crushing rollers 1011 near one end of the driving motor 105 all extend to the inside of the side wall of the screening box 1, and are respectively and fixedly connected with a main gear disc and a secondary gear disc, the output shaft end of the driving motor 105 extends to the inside of the side wall of the screening box 1 and is fixedly connected with the main gear disc, the main gear disc and the secondary gear disc are not shown in a meshing diagram, the driving motor 105 drives the main gear disc to rotate, the main gear disc drives the secondary gear disc to rotate, so that the main gear disc and the secondary gear disc simultaneously drive the crushing rollers 1011 to rotate, the coking coal led into the screening box 1 is crushed, and the crushed coking coal is filtered and screened through the screen plate 101.

Referring to fig. 2 and 3, driving disc 107 is fixedly sleeved on an output shaft of driving motor 105, and the equal fixedly connected with movable block 109 in both sides of sieve plate 101, movable groove 103 that is symmetric distribution is seted up to the both sides of screening case 1, and movable block 109 slidable mounting is inside movable groove 103, the top fixedly connected with rack plate 108 of movable block 109, half of driving disc 107 circumference lateral wall is provided with the tooth piece, and tooth piece and rack plate 108 on the driving disc 107 mesh, the tooth piece that sets up through half of driving disc 107 circumference lateral wall, make its and the tooth piece intermittent type nature contact on rack plate 108, rethread spring column 1012's cooperation, can make sieve plate 101 do reciprocal vibrations from top to bottom along movable groove 103, effectively avoid sieve mesh jam phenomenon to take place when screening sieve plate 101, improve its screening efficiency.

The implementation principle of the coking coal selected raw material coal pre-screening device provided by the embodiment of the invention is as follows:

at first start driving motor 105, then it is inside to screen box 1 to put in the coking coal who treats screening, drive the rotation of pinion disc and pinion disc through driving motor 105, make crushing roller 1011 rotate, crushing roller 1011 can carry out crushing treatment to the coking coal, and coking coal after the crushing treatment can sieve through sieve 101 and handle, at the in-process of screening, driving motor 105 can drive driving-disc 107 and rotate, through the tooth piece contact on the tooth piece intermittent type nature on the driving-disc 107 and the rack plate 108, the cooperation of rethread sieve 101 bottom spring post 1012, can make sieve 101 do up-and-down reciprocating motion along activity groove 103 direction between spacing groove 102 and first discharge gate 1010, thereby can effectively avoid the sieve mesh jam on the sieve 101.

Example two:

this embodiment is adding feed back case 2 on the basis of embodiment one, retrieve the complete large granule coal cinder of uncrushed screening, then leading-in to sieve incasement portion and carry out secondary treatment, refer to fig. 1 and 5, a coking coal income raw materials coal prescreening device, still include feed back case 2, feed back case 2 and sieve incasement 1 fixed connection, and feed back case 2 is close to one side of sieve case 1 and has seted up guide opening 203 and second discharge gate 205, guide opening 203 is located the top of second discharge gate 205, and second discharge gate 205 and first discharge gate 1010 intercommunication, make the complete large granule coal cinder of uncrushed screening can enter into feed back case 2 inside through first discharge gate 1010 and second discharge gate 205.

Referring to fig. 4-6, two symmetrically distributed transmission rollers 206 are rotatably installed between the inner walls of the two sides of the feed back bin 2, a lifting belt 202 is connected between the two transmission rollers 206, a plurality of lifting bins 201 which are uniformly distributed and have the same structure are rotatably installed on the surface of the lifting belt 202, the inner wall of one side of each lifting bin 201 is obliquely arranged, the rotation shaft of the transmission roller 206 positioned below, which is close to one side of the driving motor 105, penetrates through the side wall of the feed back bin 2 and extends to the outside of the feed back bin, and is fixedly connected with a secondary belt pulley 204, the output shaft of the driving motor 105 is fixedly connected with a main belt pulley 106, a transmission belt is connected between the main belt pulley 106 and the secondary belt pulley 204, the main belt pulley 106 drives the secondary belt pulley 204 to rotate through the transmission belt, the secondary belt pulley 204 drives the transmission rollers 206 to rotate, so as to drive the lifting belt 202 to rotate, and the lifting bins 201 to move by the lifting belt 202, when lifting box 201 passes through the bottom of feed back box 2, can pack into lifting box 201 inside with the accumulational large granule coal cinder in feed back box 2 bottom to promote to its highest place through elevator belt 202, when reaching its highest place, lifting box 201 tends to horizontal placement, and the large granule coal cinder of lifting box 201 inside this moment can fall into inside screening case 1 along with the slope of its inside wall, carries out breakage and screening processing to it again through screening case 1, improves coking coal's screening efficiency.

Referring to fig. 1 and 5, the material return box 2 is located at the inner side of the material guide opening 203, and is fixedly connected with a material guide plate 3 which is obliquely arranged, the material guide plate 3 is located above the screening box 1, the oblique direction is arranged towards the screening box 1, and the material guide plate 3 is arranged to enable large-particle coal blocks to stably enter the screening box 1.

The implementation principle of the pre-screening device for coking coal selected raw material coal in the second embodiment of the invention is as follows:

big particle coal blocks which are not crushed and completely sieved and are led out by the sieving and separating box 1 enter the material returning box 2 through the first discharge hole 1010 and the second discharge hole 205, the driving motor 105 drives the main belt pulley 106 and the auxiliary belt pulley 204 to rotate, the driving roller 206 can drive the lifting belt 202 to work, the lifting belt 202 drives the lifting box 201, when the lifting box 201 passes through the bottom end of the material returning box 2, the big particle coal blocks accumulated at the bottom end of the material returning box 2 enter the lifting box 201, when the lifting box 201 moves to the highest position of the lifting belt 202, the big particle coal blocks inside the lifting box 201 slide out through the inclined inner wall of the lifting box, and then enter the sieving box 1 again through the material guide opening 203 and the material guide plate 3, the big particle coal blocks are crushed and sieved again through the implementation mode of the first embodiment, and the sieving efficiency of the coking coal is effectively improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The pre-screening device for coking coal selected raw material coal comprises a screening box (1) with an open top end, and is characterized in that two sides of the screening box (1) are respectively provided with a limiting groove (102) and a first discharge hole (1010), a screen plate (101) is movably mounted inside the screening box (1), two ends of the screen plate (101) respectively penetrate through the limiting groove (102) and the first discharge hole (1010), and a plurality of spring columns (1012) with the same structure are fixedly connected between the bottom end of the screen plate (101) and the inner wall of the bottom end of the screening box (1);

the utility model discloses a screening box, including screening box (1), one side fixed mounting of screening box (1) has mounting bracket (104) that is the L type, just one side fixed mounting that the vertical section of mounting bracket (104) is close to screening box (1) has driving motor (105), the both sides of screening box (1) all are equipped with through driving motor (105) drive and with sieve (101) and crushing roller (1011) complex actuating mechanism.

2. The pre-screening device for coking coal selected raw material coal according to claim 1, characterized in that the screen plate (101) is arranged obliquely, the cross section of the screen plate (101) is arranged in an arc shape, and a plurality of uniformly distributed screen holes are arranged on the plate body of the screen plate (101).

3. The pre-screening device for coking coal selected raw material coal according to claim 1, characterized in that the driving mechanism comprises a driving disc (107), a rack plate (108), a movable block (109), a main gear disc and a pinion gear disc, the driving disc (107) is fixedly sleeved on an output shaft of the driving motor (105), the movable blocks (109) are fixedly connected to two sides of the sieve plate (101), the rack plate (108) is fixedly connected to the top end of the movable block (109), a tooth block is arranged on one half of the circumferential side wall of the driving disc (107), and the tooth block on the driving disc (107) is meshed with the rack plate (108).

4. The pre-screening device for coking coal selected raw material coal according to claim 3, characterized in that two sides of the screening box (1) are provided with symmetrically distributed movable grooves (103), and the movable blocks (109) are slidably mounted inside the movable grooves (103).

5. The pre-screening device for coking coal selected as raw material according to claim 3, wherein the rotating shafts of the two crushing rollers (1011) near one end of the driving motor (105) extend to the inside of the side wall of the screening box (1) and are fixedly connected with a main gear disc and a secondary gear disc respectively, the end part of the output shaft of the driving motor (105) extends to the inside of the side wall of the screening box (1) and is fixedly connected with the main gear disc, and the main gear disc is meshed with the secondary gear disc.

6. The pre-screening device for coking coal selected raw material coal according to claim 3, characterized by further comprising a return box (2), wherein the return box (2) is fixedly connected with the screening box (1), a material guide opening (203) and a second material outlet (205) are formed in one side, close to the screening box (1), of the return box (2), the material guide opening (203) is located above the second material outlet (205), and the second material outlet (205) is communicated with the first material outlet (1010).

7. The pre-screening device for coking coal selected raw material coal according to claim 6, characterized in that a guide plate (3) arranged obliquely is fixedly connected to the inner side of the feed return box (2) positioned at the guide opening (203), the guide plate (3) is positioned above the screening box (1), and the oblique direction is arranged towards the screening box (1).

8. The pre-screening device for coking coal selected raw material coal according to claim 1, characterized in that two symmetrically distributed transmission rollers (206) are rotatably installed between the inner walls of the two sides of the return box (2), a lifting belt (202) is connected between the two transmission rollers (206), and a plurality of lifting boxes (201) which are uniformly distributed and have the same structure are rotatably installed on the surface of the lifting belt (202).

9. The pre-screening device for coking coal selected raw material coal as claimed in claim 8, wherein a rotating shaft of the driving roller (206) at the lower part, which is close to one side of the driving motor (105), penetrates through the side wall of the return box (2) and extends to the outside of the return box to be fixedly connected with the secondary belt pulley (204), the output shaft of the driving motor (105) is fixedly connected with the primary belt pulley (106), and a driving belt is connected between the primary belt pulley (106) and the secondary belt pulley (204).

10. The pre-screening device for coking coal as raw material according to claim 8, characterized in that the inner wall of one side of the lifting box (201) is inclined.