Cold-pressed pellet screening and distributing method and equipment

Abstract

The invention relates to a cold-pressed pellet screening and distributing method and equipment, which comprises a green pellet sealing-tape machine, a swing screening machine, a bulk hopper, a bulk sealing-tape machine and a drying equipment grate bed, the swing screening machine is arranged in a way that the tail is high and the head is low, and the whole swing screening machine is downwards inclined forwards and is sequentially provided with a material receiving area and a screening area from the tail part to the front part; a green ball adhesive tape machine is arranged at a top inlet of the material receiving area, a bulk material outlet at the bottom of the screening area is provided with a bulk material hopper, the front end of the screening area is connected with a drying equipment grate bed, a vibrator is arranged on the outer side of the swing screening machine, a swing mechanism is arranged at the bottom of the swing screening machine, and a tooth roller for crushing is arranged in the bulk material hopper. The green pellet screening, crushing and distributing system has the beneficial effects that the equipment maintenance amount is small, connection links among the equipment are saved, the equipment utilization rate is high, the green pellet screening, crushing and distributing efficiency is high, the screening, crushing and distributing effect is good, the plant height is reduced, and the engineering investment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cold-pressed pellet screening, and in particular to a method and equipment for screening and distributing cold-pressed pellets. Background Art

[0002] The cold-pressed balls pressed by the high-pressure ball press need to be screened and evenly distributed to the drying equipment for drying. Since the balls pressed by the ball press are not round, but mostly pillow-shaped, the effect of using a roller screen to screen the balls is very poor, and it is difficult for the distribution equipment to evenly distribute the qualified raw balls to the drying equipment. At the same time, the unqualified raw balls screened out need to be crushed and returned to the ball pressing room for re-pressing.

[0003] Defects and shortcomings of existing cold pressed pellet screening technology:

[0004] (1) At present, cold pressed balls are screened by roller screens. Since the balls pressed by the ball press are not round, but mostly pillow-shaped, the effect of using roller screens to screen the pressed balls is very poor, and the equipment investment is large and the equipment maintenance is large;

[0005] (2) After screening, qualified green balls are mostly distributed by swing belt machines combined with wide belt machines and roller distributors. This process has many equipment links and poor distribution effect. There are many equipment connections, which are easy to damage and require a lot of maintenance.

[0006] (3) Unqualified raw balls need to be crushed separately using a raw ball crusher. The crushed materials are then sent to the ball pressing stage by a belt conveyor and pressed again. This practice increases the number of transfer equipment links and the height of the factory building, increasing the project investment. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art, the present invention provides a method and equipment for screening and distributing cold-pressed pellets, which combines the screening, crushing and distribution of cold-pressed pellets into an integral device, with small equipment investment and small equipment maintenance, saving connection links between equipment, high equipment utilization rate, high efficiency of raw ball screening, crushing and distribution, good screening, crushing and distribution effect, reduced plant height, and reduced project investment.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A cold pressed pellet screening and distribution equipment comprises a raw pellet belt conveyor, a swing screening machine, a bulk material hopper, a bulk material belt conveyor and a drying equipment grate bed. The swing screening machine is arranged with the tail high and the head low and is generally inclined downward. The swing screening machine is provided with a receiving area and a screening area in sequence from the tail to the front. The raw pellet belt conveyor is provided at the top entrance of the receiving area, and a bulk material hopper is provided at the bulk material outlet at the bottom of the screening area. The front end of the screening area is connected to the drying equipment grate bed. A vibrator is provided on the outside of the swing screening machine, and a swing mechanism is provided at the bottom of the swing screening machine. A crushing tooth roller is provided inside the bulk material hopper, and a bulk material belt conveyor is provided at the bulk hopper outlet.

[0010] Furthermore, the swing screening machine is provided with an integral steel plate at the bottom of the material receiving area.

[0011] Furthermore, the swing screening machine is provided with rod-shaped screening bars at the bottom of the screening area.

[0012] Furthermore, the swing mechanism includes a swing motor and a swing adjusting rod, and the swing adjusting rod connects the swing motor and the swing screening machine.

[0013] Furthermore, the toothed rollers are symmetrically arranged in pairs.

[0014] Furthermore, the specific steps of the screening and distributing method of the cold pressed pelletizing screening and distributing equipment are as follows:

[0015] S1. The pressed green balls are transported to the swing screening machine by the green ball belt conveyor. The pressed green balls are received by the receiving area of ​​the swing screening machine and enter the swing screening machine. Since the swing screening machine is arranged forward as a whole, the green balls are first delivered to the receiving area. The bottom of this area is a whole steel plate and does not have a screening function. As the vibrator outside the swing screening machine vibrates, the green balls in the swing screening machine vibrate and move to the screening area in front.

[0016] S2. When the raw balls move to the screening area, the raw balls with qualified sizes move forward along the gaps of the bar-shaped screen bars at the bottom of the screening area under the vibration of the swing screening machine, and the unqualified raw balls fall through the gaps of the bar-shaped screen bars and fall to the bottom of the screening area. A bulk hopper is set at the bottom of the screening area, and the unqualified raw balls fall into the bulk hopper;

[0017] S3. The qualified raw balls are moved to the front end of the screening area. As the swing motor in the swing mechanism swings, the swing adjustment rod drives the swing screening machine to swing as a whole. The raw balls are evenly distributed on the grate bed of the drying equipment as the swing screening machine swings.

[0018] S4. The unqualified raw balls that fall into the bulk hopper fall onto the symmetrically arranged toothed rollers during the falling process. The two toothed rollers rotate towards each other. As the toothed rollers rotate towards each other at high speed, the unqualified raw balls that fall into the toothed rollers are crushed. In order to prevent the toothed rollers from sticking to the materials, the joints of the two toothed rollers are designed as a self-cleaning structure to prevent the materials from sticking to the toothed rollers. The crushed materials are transported to the ball pressing room by the bulk material belt conveyor for re-ball pressing.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The screening and distribution equipment has a simple structure, low manufacturing cost, efficient screening, uniform distribution, quick crushing, easy use, high operating efficiency, smoother screening and crushing distribution, and low equipment maintenance;

[0021] (2) Screening, crushing and distribution are concentrated on a unified device, which reduces the number of working equipment for screening, crushing and distribution, reduces the risk of failure, has high equipment utilization, high efficiency of raw ball screening, crushing and distribution, good screening, crushing and distribution effect, low operating cost and convenient operation;

[0022] (3) Screening, crushing and distribution are concentrated in a unified device, which saves the connection links between equipment, has high equipment utilization rate, high equipment safety, long service life, small system motor installed capacity and low operating power consumption;

[0023] (4) Reducing the number of crushing and material distribution equipment reduces the equipment height, reduces the plant height, and reduces project investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a cold pressed pellet screening and distribution equipment according to the present invention.

[0025] In the figure: 1. Raw ball belt conveyor; 2. Swinging screening machine; 2-1. Receiving area; 2-2 Screening area; 2-3. Screen bars; 3 Vibrator; 4 Swinging mechanism; 5. Bulk hopper; 6. Tooth roller; 7. Bulk belt conveyor; 8. Drying equipment grate bed. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0027] like Figure 1 As shown, the working principle of a cold-pressed pelletizing screening and distributing equipment is as follows: the cold-pressed raw balls are screened, crushed and distributed in a unified manner through the screening and distributing equipment, the swing screener 2 swings during the vibration process, and the raw material moves forward in the vibration of the swing screener 2, and is screened by the rod-shaped screen bars 2-3 in the swing screener 2, and the qualified raw balls are evenly distributed to the grate bed 8 of the drying equipment for drying as they swing with the swing screener 2, and the unqualified raw balls fall into the bulk hopper 5 through the gaps between the screen bars 2-3, and the gear rollers 6 arranged in pairs in the bulk hopper 5 rotate relatively, and the unqualified raw balls that fall in are crushed, and then returned through the bulk belt conveyor 7 to be re-pressed.

[0028] like Figure 1As shown, a cold pressed pellet screening and distribution equipment comprises a raw ball belt conveyor 1, a swing screening machine 2, a bulk material hopper 5, a bulk material belt conveyor 7, and a drying equipment grate bed 8. The swing screening machine 2 is arranged with the tail high and the head low and is generally inclined forward and downward. The swing screening machine 2 is provided with a receiving area 2-1 and a screening area 2-2 in sequence from the tail to the front. The raw ball belt conveyor 1 is provided at the top inlet position of the receiving area 2-1, and a bulk material hopper 3 is provided at the bulk material outlet position at the bottom of the screening area 2-2. The front end of the screening area 2-2 is connected to the drying equipment grate bed 6, a vibrator 3 is provided on the outside of the swing screening machine 2, a swing mechanism 4 is provided at the bottom of the swing screening machine 2, a crushing tooth roller 6 is provided inside the bulk material hopper 5, and a bulk material belt conveyor 7 is provided at the outlet of the bulk hopper 5.

[0029] Furthermore, the swing screening machine 2 is provided with an integral steel plate at the bottom of the material receiving area 2-1.

[0030] Furthermore, the swing screening machine 2 is provided with rod-shaped screening bars 2-3 at the bottom of the screening area 2-2.

[0031] Furthermore, the swing mechanism 4 includes a swing motor and a swing adjustment rod, and the swing adjustment rod connects the swing motor and the swing screening machine 2.

[0032] Furthermore, the toothed rollers 6 are symmetrically arranged in pairs.

[0033] Furthermore, the specific steps of the screening and distributing method of the cold pressed pelletizing screening and distributing equipment are as follows:

[0034] S1. The pressed green balls are transported to the swing screening machine 2 by the green ball belt conveyor 1, and the pressed green balls are received by the receiving area 2-1 of the swing screening machine 2 and enter the swing screening machine 2. Since the swing screening machine 2 is arranged forward as a whole, the green balls are first delivered to the receiving area 2-1. The bottom of this area is a whole steel plate and does not have a screening function. As the vibrator 3 outside the swing screening machine 2 vibrates, the green balls in the swing screening machine 2 vibrate and move to the screening area 2-2 in the front;

[0035] S2. When the raw balls move to the screening area 2-2, the raw balls with qualified sizes move forward along the gaps of the rod-shaped screen bars 2-3 at the bottom of the screening area 2-2 under the vibration of the swing screening machine 2, and the unqualified raw balls fall through the gaps of the rod-shaped screen bars 2-3 and fall to the bottom of the screening area 2-2. A bulk hopper 5 is provided at the bottom of the screening area 2-2, and the unqualified raw balls fall into the bulk hopper 5;

[0036] S3. The qualified raw balls are moved to the front end of the screening area 2-2. As the swing motor in the swing mechanism 4 swings, the swing adjustment lever drives the swing screening machine 2 to swing as a whole. The raw balls are evenly distributed to the drying device grate bed 8 as the swing screening machine 2 swings.

[0037] S4. The unqualified raw balls that fall into the bulk hopper 5 fall onto the symmetrically arranged toothed rollers 6 during the falling process. The two toothed rollers 6 rotate towards each other. As the toothed rollers 6 rotate towards each other at high speed, the unqualified raw balls that fall into the toothed rollers 6 are crushed. In order to prevent the toothed rollers 6 from sticking to the materials, the joint of the two toothed rollers 6 is designed as a self-cleaning structure to prevent the materials from sticking to the toothed rollers 6. The crushed materials are transported to the ball pressing room by the bulk material belt conveyor 7 for re-ball pressing.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold-pressed pelletizing screening and distributing equipment, comprising a pelletizing belt conveyor, a swing screening machine, a bulk material hopper, a bulk material belt conveyor, and a drying equipment grate, characterized in that: The swing screening machine is arranged with the tail high and the head low and is generally inclined forward and downward. The swing screening machine is provided with a receiving area and a screening area in sequence from the tail to the front. A ball conveyor is provided at the top entrance of the receiving area, and a bulk material hopper is provided at the bulk material outlet at the bottom of the screening area. The front end of the screening area is connected to a drying device grate. A vibrator is provided on the outside of the swing screening machine, and a swing mechanism is provided at the bottom of the swing screening machine. A crushing tooth roller is provided inside the bulk material hopper, and a bulk material conveyor is provided at the outlet of the bulk hopper.

2. The cold pressed pelletizing screening and distributing equipment according to claim 1 is characterized in that: The swing screening machine is provided with an integral steel plate at the bottom of the material receiving area.

3. The cold pressed pelletizing screening and distributing equipment according to claim 1 is characterized in that: The swing screening machine is provided with rod-shaped screening bars at the bottom of the screening area.

4. The cold pressed pelletizing screening and distributing equipment according to claim 1 is characterized in that: The swing mechanism comprises a swing motor and a swing adjusting rod, and the swing adjusting rod connects the swing motor and the swing screening machine.

5. The cold pressed pelletizing screening and distributing equipment according to claim 1 is characterized in that: The toothed rollers are symmetrically arranged in pairs.

6. The screening and distributing method of the cold pressed pelletizing screening and distributing equipment according to claim 1, characterized in that: The specific steps of the screening and distributing method of the cold pressed pelletizing screening and distributing equipment are as follows: S1. The pressed green balls are transported to the swing screening machine by the green ball belt conveyor. The pressed green balls are received by the receiving area of ​​the swing screening machine and enter the swing screening machine. Since the swing screening machine is arranged forward as a whole, the green balls are first delivered to the receiving area. The bottom of this area is a whole steel plate and does not have a screening function. As the vibrator outside the swing screening machine vibrates, the green balls in the swing screening machine vibrate and move to the screening area in front. S2. When the raw balls move to the screening area, the raw balls with qualified sizes move forward along the gaps of the bar-shaped screen bars at the bottom of the screening area under the vibration of the swing screening machine, and the unqualified raw balls fall through the gaps of the bar-shaped screen bars and fall to the bottom of the screening area. A bulk hopper is set at the bottom of the screening area, and the unqualified raw balls fall into the bulk hopper; S3. The qualified raw balls are moved to the front end of the screening area. As the swing motor in the swing mechanism swings, the swing adjustment rod drives the swing screening machine to swing as a whole. The raw balls are evenly distributed on the grate bed of the drying equipment as the swing screening machine swings. S4. The unqualified raw balls that fall into the bulk hopper fall onto the symmetrically arranged toothed rollers during the falling process. The two toothed rollers rotate towards each other. As the toothed rollers rotate towards each other at high speed, the unqualified raw balls that fall into the toothed rollers are crushed. In order to prevent the toothed rollers from sticking to the materials, the joints of the two toothed rollers are designed as a self-cleaning structure to prevent the materials from sticking to the toothed rollers. The crushed materials are transported to the ball pressing room by the bulk material belt conveyor for re-ball pressing.

Images