Chain feeder for coal dressing

Abstract

The utility model discloses a chain feeder for coal dressing, which relates to the field of coal dressing, and comprises a machine body, two side plates are fixedly connected to the top of the machine body, a feeding mechanism is arranged between the side plates, the feeding mechanism comprises a plurality of scraper chains, a plurality of transmission boxes are fixedly connected to the scraper chains, and the transmission boxes stretch across all the scraper chains in the left-right direction. And a plurality of shifting and crushing mechanisms are arranged on one side, facing the moving direction, of the transmission box. The device has the beneficial effects that a transmission box is driven to move through a scraper chain, a reciprocating mechanism is operated through a meshing mechanism, the reciprocating mechanism drives a material stirring box to reciprocate left and right, a rotating shaft reciprocates left and right to poke raw coal, and the raw coal is evenly distributed; the material crushing cutter can scatter caked coal briquettes, and raw coal can be distributed more uniformly, so that the raw coal can uniformly enter the jigger.

Description

Technical Field

[0001] The utility model relates to the field of coal preparation, in particular to a chain feeder for coal preparation. Background Art

[0002] Coal preparation is also called coal washing. It is the process of selecting clean coal that meets the user's quality requirements from raw coal. Coking coal has certain requirements for ash and sulfur content, and clean coal that has been washed must be used. The petrographic composition of coal and the quantity, type, nature and distribution of minerals in coal are all factors that affect the selectivity of coal. Jigging machines are required in the coal preparation process, and chain feeders are usually used to feed coal into the jig. For example, a chain feeder with announcement number CN213833472U transports raw coal through a chain group.

[0003] When the existing chain feeder is in use, coal is poured directly into the feeder through the hopper, which causes the raw coal to be unevenly distributed on the chain group. In this case, when the chain group feeds the raw coal into the jig, the jig feed will also be uneven, which will affect the coal selection effect of the jig. Therefore, the existing chain feeder needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a chain feeder for coal preparation in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A chain feeder for coal preparation comprises a machine body, two side plates are fixedly connected to the top of the machine body, a feeding mechanism is arranged between the side plates, the feeding mechanism comprises a plurality of scraper chains, a plurality of transmission boxes are fixedly connected to the scraper chains, the transmission box spans all the scraper chains in the left and right directions, a plurality of material-digging and crushing mechanisms are arranged on the side of the transmission box facing its movement direction, each material-digging and crushing mechanism is respectively located between the two scraper chains, the material-digging and crushing mechanism comprises a material-digging box, a rotating shaft is rotatably connected in the material-digging box, a crushing knife is fixedly connected to the bottom end of the rotating shaft, a reciprocating mechanism for driving the material-digging box to move left and right is arranged in the transmission box, a transmission mechanism for rotating the rotating shaft is arranged in the transmission box, and meshing mechanisms for operating the reciprocating mechanism are arranged on both sides of the transmission box.

[0007] Preferably, the reciprocating mechanism includes a reciprocating screw rod, which is rotatably connected in a transmission box, and has multiple reciprocating threads on the reciprocating screw rod. The reciprocating screw rod is threadedly connected to a slider, and the slider is slidably connected to the inner wall of the transmission box. The slider and the transmission box are provided with an avoidance groove on one side close to the material selection box, and a connecting block is fixedly connected between the slider and the material selection box, and the connecting block is located in the avoidance groove.

[0008] Preferably, the transmission mechanism includes a gear, which is rotatably connected to the top of the slider, a driving pulley is fixedly connected to the top of the gear, a transmission belt is sleeved on the driving pulley, the other end of the transmission belt is located in the material box and is connected to the driven pulley, the driven pulley is fixedly connected to the rotating shaft, a through hole is opened on the side of the material box close to the transmission box, the transmission belt passes through the through hole, a rack is fixedly connected to the inner wall of the transmission box, and multiple gears are meshed with the rack.

[0009] Preferably, the meshing mechanism includes a power wheel, which is fixedly connected to both ends of the reciprocating screw and is located outside the transmission box. A plurality of meshing teeth are fixedly connected to the circumferential surface of the power wheel. A fixing ring is fixed on the side plate. The shape of the fixing ring is the same as the motion trajectory of the scraper chain. A meshing groove is provided on the fixing ring, and the meshing teeth mesh with the meshing groove.

[0010] Preferably, the side of the transmission box away from the scraper chain is tapered.

[0011] Preferably, movable baffles are fixedly connected to both sides of the material diverting box, and the movable baffles are attached to the transmission box.

[0012] The beneficial effect is that the transmission box is driven to move by the scraper chain, the reciprocating mechanism is operated by the meshing mechanism, the reciprocating mechanism drives the material box to move back and forth, so that the rotating shaft moves back and forth to pound the raw coal, so that the raw coal is evenly distributed, and at the same time, the transmission mechanism is used to rotate the rotating shaft, and the rotating shaft drives the crushing knife to rotate, and the crushing knife can break up the agglomerated coal and make the raw coal distribution more even, so that the raw coal can enter the jig machine evenly.

[0013] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional diagram of a chain feeder for coal preparation described in the utility model;

[0016] Figure 2 It is a left view of the feeding mechanism of the chain feeder for coal preparation described in the utility model;

[0017] Figure 3 It is a three-dimensional diagram of a transmission box of a chain feeder for coal preparation described in the utility model;

[0018] Figure 4It is a left view of the internal structure of the transmission box and the material shifting box of a chain feeder for coal preparation described in the utility model;

[0019] Figure 5 The utility model is a chain feeder for coal preparation Figure 1 A magnified view of the structure at center;

[0020] Figure 6 It is a top view of the internal structure of a transmission box of a chain feeder for coal preparation described in the utility model;

[0021] Figure 7 The utility model is a chain feeder for coal preparation Figure 6 A magnified view of the structure in the middle.

[0022] The description of the accompanying drawings is as follows: 1. body; 101. side plate; 102. feed hopper; 103. power mechanism; 2. feeding mechanism; 201. scraper chain; 202. power shaft; 203. material plate; 3. transmission box; 301. avoidance groove; 4. reciprocating mechanism; 401. reciprocating screw rod; 402. slider; 403. connecting block; 5. material digging and crushing mechanism; 501. material digging box; 502. through hole; 503. rotating shaft; 504. crushing knife; 6. transmission mechanism; 601. gear; 602. driving pulley; 603. transmission belt; 604. driven pulley; 605. rack; 7. meshing mechanism; 701. power wheel; 702. meshing teeth; 703. fixing ring; 704. meshing groove; 8. movable baffle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 7As shown, a chain feeder for coal preparation includes a body 1, two side plates 101 are fixedly connected to the top of the body 1, a feed hopper 102 is fixedly connected to the top rear end of the side plate 101, a feeding mechanism 2 is arranged between the side plates 101, and a power mechanism 103 for driving the feeding mechanism 2 to operate is arranged at the rear side of the body 1, the feeding mechanism 2 includes a plurality of scraper chains 201, and the front and rear ends of the scraper chains 201 are both sleeved with a power shaft 202, and the power shaft 202 rotates with the side plates 101 The output end of the power mechanism 103 is connected to a power shaft 202, a material plate 203 is arranged between the front and rear power shafts 202, the material plate 203 is fixedly connected to the side plate 101, the scraper chain 201 is attached to the top of the material plate 203, the raw coal is poured onto the material plate 203 through the feed hopper 102, the power mechanism 103 drives the power shaft 202 to rotate, the power shaft 202 drives the scraper chain 201 to move, and the scraper chain 201 transports the raw coal to the jig.

[0027] A plurality of transmission boxes 3 are fixedly connected to the scraper chain 201, and the transmission box 3 spans all the scraper chains 201 in the left-right direction. A plurality of material-digging and material-crushing mechanisms 5 are arranged on the side of the transmission box 3 facing the moving direction thereof, and each material-digging and material-crushing mechanism 5 is respectively located between two scraper chains 201. The material-digging and material-crushing mechanism 5 includes a material-digging box 501, and a rotating shaft 503 is connected to the material-digging box 501 through a bearing. The bottom end of the rotating shaft 503 extends out of the material-digging box 501 and is fixedly connected to a material-crushing knife 504. A material-digging and material-crushing mechanism 5 is arranged in the transmission box 3 for driving the material-digging box 501. The reciprocating mechanism 4 moves left and right. When the material box 501 moves left and right, it will drive the rotating shaft 503 to move left and right, so that the material box 501 and the rotating shaft 503 can move the raw coal left and right, so that the raw coal is evenly distributed on the material plate 203. A transmission mechanism 6 for rotating the rotating shaft 503 is arranged in the transmission box 3. When the rotating shaft 503 rotates, it will drive the crushing knife 504 to rotate. The crushing knife 504 can break up the agglomerated coal clumps and improve the uniformity of the raw coal distribution. Engaging mechanisms 7 for operating the reciprocating mechanism 4 are arranged on both sides of the transmission box 3.

[0028] The reciprocating mechanism 4 includes a reciprocating screw rod 401, which is connected to the transmission box 3 through a bearing. The reciprocating screw rod 401 is provided with multiple reciprocating threads. The reciprocating screw rod 401 is threadedly connected with a slider 402, and the slider 402 is slidably connected to the inner wall of the transmission box 3. The slider 402 and the transmission box 3 are provided with an avoidance groove 301 on one side close to the material diverting box 501. A connecting block 403 is fixedly connected between the slider 402 and the material diverting box 501, and the connecting block 403 is located in the avoidance groove 301. Through the rotation of the reciprocating screw rod 401, multiple sliders 402 are synchronously reciprocated, and the slider 402 drives the material diverting box 501 to reciprocate through the connecting block 403.

[0029] The transmission mechanism 6 includes a gear 601, which is rotatably connected to the top of the slider 402. A driving pulley 602 is fixedly connected to the top of the gear 601. A transmission belt 603 is sleeved on the driving pulley 602. The other end of the transmission belt 603 is located in the material-digging box 501 and is connected to a driven pulley 604. The driven pulley 604 is fixedly connected to the rotating shaft 503. A through hole 502 is opened on the side of the material-digging box 501 close to the transmission box 3. The transmission belt 603 passes through the through hole 502. A rack 605 is fixedly connected to the inner wall of the transmission box 3. Multiple gears 601 are all meshed with the rack 605. When the slider 402 and the material-digging box 501 move left and right, the gear 601 moves with the slider 402, so that the gear 601 rolls along the rack 605, and the gear 601 drives the driving pulley 602 to rotate, and then the rotating shaft 503 is rotated through the transmission belt 603 and the driven pulley 604.

[0030] The meshing mechanism 7 includes a power wheel 701, which is fixedly connected to both ends of the reciprocating screw rod 401. The power wheel 701 is located outside the transmission box 3. A plurality of meshing teeth 702 are fixedly connected to the circumferential surface of the power wheel 701. A fixing ring 703 is fixed on the side plate 101. The shape of the fixing ring 703 is the same as the movement trajectory of the scraper chain 201. A meshing groove 704 is provided on the fixing ring 703. The meshing teeth 702 mesh with the meshing groove 704. When the scraper chain 201 drives the transmission box 3 to move, the power wheel 701 moves along the fixing ring 703. The meshing of the meshing teeth 702 and the meshing groove 704 is used to make the power wheel 701 rotate, thereby rotating the reciprocating screw rod 401.

[0031] The side of the transmission box 3 away from the scraper chain 201 is conical. The raw coal may fall onto the transmission box 3 when falling from the feed hopper 102. The conical structure of the transmission box 3 can prevent too much raw coal from remaining on the transmission box 3. The movable baffles 8 are fixedly connected to both sides of the material box 501. The movable baffles 8 are attached to the transmission box 3. The movable baffles 8 are used to block the avoidance groove 301 to prevent the raw coal from entering the transmission box 3 through the avoidance groove 301.

[0032] Working principle: When in use, the raw coal is poured into the material plate 203 through the feed hopper 102, and the power shaft 202 is driven to rotate by the power mechanism 103, and the power shaft 202 drives the scraper chain 201 to move, and the scraper chain 201 transports the raw coal. At the same time, the scraper chain 201 drives the transmission box 3 to move, so that the power wheel 701 moves along the fixed ring 703, and the engagement of the meshing teeth 702 and the meshing grooves 704 is utilized to make the power wheel 701 rotate, and the power wheel 701 drives the reciprocating screw 401 to rotate, and the reciprocating screw 401 drives multiple sliders 402 to move back and forth left and right, and the slider 402 drives the material box 501 to move back and forth left and right through the connecting block 403, so that the material box 501 and the rotating shaft 503 move the raw coal left and right, so that the raw coal is evenly distributed on the material plate 203.

[0033] When the slider 402 moves left and right, the gear 601 moves with the slider 402. Since the gear 601 is meshed with the rack 605, the gear 601 rotates back and forth. The gear 601 drives the active pulley 602 to rotate. The active pulley 602 drives the driven pulley 604 to rotate through the transmission belt 603. The driven pulley 604 drives the rotating shaft 503 to rotate. The rotating shaft 503 drives the crushing knife 504 to rotate. The crushing knife 504 can break up the agglomerated coal. Since the crushing knife 504 also moves left and right with the rotating shaft 503, the raw coal can be further evenly distributed, and finally the chain feeder can feed evenly.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A chain feeder for coal preparation, comprising a body (1), two side plates (101) are fixedly connected to the top of the body (1), a feeding mechanism (2) is arranged between the side plates (101), the feeding mechanism (2) comprises a plurality of scraper chains (201), and is characterized in that: A plurality of transmission boxes (3) are fixedly connected to the scraper chain (201), and the transmission box (3) spans all the scraper chains (201) in the left-right direction. A plurality of material-dividing and material-crushing mechanisms (5) are arranged on one side of the transmission box (3) facing the moving direction thereof, and each material-dividing and material-crushing mechanism (5) is respectively located between two scraper chains (201). The material-dividing and material-crushing mechanism (5) comprises a material-dividing box (501), a rotating shaft (503) is rotatably connected in the material-dividing box (501), a bottom end of the rotating shaft (503) extends out of the material-dividing box (501) and is fixedly connected to a material-crushing knife (504), a reciprocating mechanism (4) for driving the material-dividing box (501) to move left and right is arranged in the transmission box (3), a transmission mechanism (6) for rotating the rotating shaft (503) is arranged in the transmission box (3), and meshing mechanisms (7) for operating the reciprocating mechanism (4) are arranged on both sides of the transmission box (3).

2. A chain feeder for coal preparation according to claim 1, characterized in that: The reciprocating mechanism (4) comprises a reciprocating screw rod (401), the reciprocating screw rod (401) is rotatably connected in the transmission box (3), a plurality of reciprocating threads are provided on the reciprocating screw rod (401), a slider (402) is threadedly connected to the reciprocating screw rod (401), the slider (402) is slidably connected to the inner wall of the transmission box (3), an avoidance groove (301) is provided on one side of the slider (402) and the transmission box (3) close to the material shifting box (501), a connecting block (403) is fixedly connected between the slider (402) and the material shifting box (501), and the connecting block (403) is located in the avoidance groove (301).

3. A chain feeder for coal preparation according to claim 2, characterized in that: The transmission mechanism (6) comprises a gear (601), the gear (601) is rotatably connected to the top of the slider (402), a driving pulley (602) is fixedly connected to the top of the gear (601), a driving belt (603) is sleeved on the driving pulley (602), the other end of the driving belt (603) is located in the material shifting box (501) and is connected to a driven pulley (604), the driven pulley (604) is fixedly connected to the rotating shaft (503), a through hole (502) is opened on one side of the material shifting box (501) close to the transmission box (3), the transmission belt (603) passes through the through hole (502), a rack (605) is fixedly connected to the inner wall of the transmission box (3), and a plurality of gears (601) are all meshed with the rack (605).

4. A chain feeder for coal preparation according to claim 2, characterized in that: The meshing mechanism (7) comprises a power wheel (701), the power wheel (701) is fixedly connected to both ends of the reciprocating screw rod (401), the power wheel (701) is located outside the transmission box (3), a plurality of meshing teeth (702) are fixedly connected to the circumferential surface of the power wheel (701), a fixing ring (703) is fixed to the side plate (101), the shape of the fixing ring (703) is the same as the movement trajectory of the scraper chain (201), a meshing groove (704) is provided on the fixing ring (703), and the meshing teeth (702) mesh with the meshing groove (704).

5. The chain feeder for coal preparation according to claim 1, characterized in that: The side of the transmission box (3) away from the scraper chain (201) is conical.

6. The chain feeder for coal preparation according to claim 1, characterized in that: The two sides of the material shifting box (501) are fixedly connected with movable baffles (8), and the movable baffles (8) are attached to the transmission box (3).

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