A fine particle coal sludge cake crusher preventing crushed particles from adhering to the inner wall

Abstract

The present invention discloses a fine-particle coal sludge cake crusher that prevents crushed particles from adhering to the inner wall, and solves the technical problems that when the coal sludge cake is crushed, the particles are large, the crushed particles adhere to the inner wall, and the utilization rate is low. The machine body includes a crushing structure and a driving motor; wherein the machine body is composed of a crushing bin with a base and inclined side walls, one end of the base is the discharge port of the crushing bin, and the other end is equipped with a driving motor; the driving motor is connected to the crushing structure fixed in the crushing bin through a power transmission system, driving the cutter teeth on the crushing structure to mesh and operate, crushing the coal sludge cake placed in the crushing bin, and the front and rear cutter teeth leave a preset gap, so that the crushing structure has the ability of self-cleaning during operation. The present invention does not stick to teeth, does not block materials, and becomes fine particles below 10 mm after crushing, does not adhere to the material twice, has a good crushing effect, and can directly mix the crushed coal sludge cake into clean coal to improve economic benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of crushing, and in particular relates to a fine-particle coal sludge cake crusher capable of preventing crushed particles from adhering to an inner wall. Background Art

[0002] At present, domestic coal mines and coal preparation enterprises basically use coal slime drying equipment. Most of the drying equipment uses coal combustion to generate high-temperature drying furnaces to achieve coal slime dehydration, and then conducts a crushing process. This method has many disadvantages such as high cost of coal slime drying, large noise and dust on site, high labor cost, and poor safety. However, the direct coal slime crushing equipment on the market has poor crushing effect. After crushing, the coal slime particles are large, generally more than 50mm, and cannot be evenly scattered on the clean coal flow. It is very easy to gather into large pieces of coal slime for the second time, resulting in unstable calorific value of clean coal and affecting the quality of commercial coal. Therefore, the study of a fine-particle coal slime cake crusher that prevents the crushed particles from sticking to the inner wall is intended to reduce the crushing particle size of coal slime, increase the value of coal slime, and create considerable economic benefits. Summary of the invention

[0003] In order to solve the technical problem of coal slime cake crushing and recovery, especially the technical problem that the coal slime cake particles are large when crushed, the crushed particles stick to the inner wall and the utilization rate is low, the present invention provides a fine-particle coal slime cake crusher that can prevent the crushed particles from sticking to the inner wall. The crusher does not stick to the teeth or block materials. After crushing, it can be crushed into fine particles less than 10 mm without secondary adhesion and has a good crushing effect. The crushed coal slime cake can be directly mixed into clean coal to improve economic benefits.

[0004] The purpose of the present invention is specifically achieved through the following technical solutions:

[0005] A fine-particle coal sludge cake crusher that prevents crushed particles from adhering to the inner wall comprises a machine body, a crushing structure and a driving motor; wherein the machine body is composed of a base and a crushing bin with inclined side walls, one end of the base is a discharge port at the bottom of the crushing bin, and the other end is equipped with a driving motor; the driving motor is connected to the crushing structure fixed in the crushing bin through a power transmission system, drives the cutter teeth on the crushing structure to mesh and operate, and crushes the coal sludge cake placed in the crushing bin.

[0006] Furthermore, the crushing bin is surrounded by side walls, with a top as a feed port and a bottom as a discharge port; the side walls include two driving side walls and two inclined side walls; the side walls are formed by connecting the driving side walls and the inclined side walls in sequence, and the bottom of the side walls is fixed on the base of the machine body to form a discharge port; the two driving side walls are two identical opposite sides and are vertically connected to the base, and the two inclined side walls are parallel and are two identical opposite sides, forming an angle with the base, and the angle of the angle is set according to the movement trajectory of the coal mud cake during the crushing process on the inner wall of the crushing bin and the requirement that the crushed particles fall freely to the discharge port.

[0007] The crushing structure includes two groups of toothed rollers distributed up and down, the center axis of the toothed roller shaft is parallel to the inclined side wall of the crushing bin, and the two ends of the toothed roller are fixed on the bearing seat of the driving side wall of the crushing bin;

[0008] When the two sets of toothed rollers distributed up and down are working, they drive the cutter teeth on the two sets of toothed rollers to mesh and crush the coal sludge cake placed in the crushing bin. There is a preset gap between the front and rear cutter teeth, and the gap is used to ensure the self-cleaning ability of the crushing structure when working.

[0009] Furthermore, the gear roller is composed of cutter teeth, a tooth seat, a shaft sleeve and a gear roller shaft; the cutter teeth are fixed to the tooth seat by screws, the tooth seat is fixed to the shaft sleeve, and the shaft sleeve is sleeved on the gear roller shaft; wherein the tooth seat is perpendicular to the center axis of the gear roller shaft, and the tooth seat is evenly arranged along the cross section of the gear roller shaft in three equal parts (i.e., distributed in ∠120°).

[0010] Preferably, the gear seat is arranged at a preset angle to the shaft sleeve, preferably 20°, and is welded to the shaft sleeve.

[0011] Preferably, each section of the shaft sleeve is provided with three rows of nine tooth seats for fixing the cutter teeth, and the distance between adjacent tooth seats is set according to the width of the cutter teeth.

[0012] Preferably, the distance between the two sets of toothed rollers satisfies that the shortest distance of the rotation diameter of the blade teeth is no more than 15 mm, and the tooth seats on the two sets of toothed rollers are spaced and distributed in opposite directions, preferably arranged in opposite directions with a difference of 25 mm, to ensure that the two blade teeth are arranged in staggered directions.

[0013] Preferably, the drive motor adopts a 6-stage motor; through the meshing transmission of two sets of gears in the power transmission system of the drive motor, the two sets of toothed roller shafts fixed in the crushing bin are driven to move in opposite directions.

[0014] Furthermore, the power transmission system is composed of a small pulley, a large pulley and a V-belt group on the driving motor, and an upper toothed roller shaft, a lower toothed roller shaft, an upper gear and a lower gear in the crushing structure; the small pulley drives the large pulley to rotate through the V-belt group sleeved thereon, and the large pulley is installed on the lower toothed roller shaft, thereby driving the lower toothed roller shaft to rotate, and the lower gear is installed on the lower toothed roller shaft, thereby driving the lower gear to rotate, the lower gear and the upper gear are meshed with each other, the upper gear is installed on the upper toothed roller shaft, and the upper gear drives the upper toothed roller shaft to rotate, the knife teeth are installed on the upper toothed roller shaft and the lower toothed roller shaft, and then the rotation of the knife teeth causes the coal mud cake to be crushed.

[0015] Preferably, the blade teeth are overall sickle-shaped, consisting of a handle, a blade body and a blade tip, which are processed as one piece. The handle gradually widens to the blade body, and the blade tip is bent laterally at a certain angle and narrowed into a triangle.

[0016] The invention arranges two groups of tooth rollers in parallel and parallel to the inclined side wall, and the inclined side wall forms an angle with the bottom, so that the coal mud cake can be reduced from sticking to the inner wall of the crushing bin after being crushed.

[0017] The tooth seat and the shaft sleeve are arranged at a preset angle, and the angle between the tooth seat and the shaft sleeve increases the contact area between the cutter teeth and the coal slime cake, thereby improving the crushing effect of the coal slime.

[0018] The distance between the two sets of tooth rollers satisfies that the shortest distance of the rotating diameter of the cutter teeth is no more than 15mm. The tooth seats on the two sets of tooth rollers are not arranged symmetrically, but are spaced and distributed in opposite directions to ensure that the two cutter teeth are arranged in staggered directions. The staggered arrangement of the tooth seats and the distance design of the two sets of tooth rollers solve the particle problem of coal slime crushing. The equipment made by giving the above parameters has been verified by experiments to meet the requirements of crushing coal slime cakes into particles below 10mm.

[0019] The two sets of gears in the power transmission system are meshed and driven to achieve reverse movement of the upper and lower tooth roller shafts, thereby increasing the stirring and crushing of the coal mud cake by the blade teeth.

[0020] It adopts 6-level motor as the power source; it has sufficient power output, simple transmission system, safe and reliable, and easy operation and maintenance.

[0021] It has wide adaptability and can be used for coal slime cakes with moisture content ranging from 0-30% and ash content ranging from 0-40%. The particle size after crushing can be controlled below 10mm and falls evenly from the discharge port without secondary accumulation, adhesion and aggregation. The coal slime cake can be directly mixed into clean coal after crushing to improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front view of the crusher.

[0023] Figure 2 This is a schematic diagram of the crusher side view.

[0024] Figure 3a This is one of the schematic diagrams of the blade teeth; Figure 3b This is the second diagram of the blade teeth.

[0025] Figure 4a It is a schematic diagram of the shaft sleeve; Figure 4b It is a schematic diagram of the cross-sectional view of the shaft sleeve.

[0026] In the figure, 1 is a machine body, 2 is a driving motor, 3 is a small pulley, 4 is a large pulley, 5 is a gear seat, 6 is a crushing bin, 7 is a cutter tooth, 8 is a shaft sleeve, 9 is an upper gear, 10 is an upper gear roller shaft, 11 is a lower gear roller shaft, 12 is a lower gear, 13 is a base, 14 is a V-belt group, and 15 is an inclined side wall. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] Reference Figure 1 , Figure 1 The present invention shows a fine-particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall, comprising a machine body 1, a crushing structure and a driving motor 2; wherein the machine body 1 is composed of a base 13 and a crushing bin 6 with inclined side walls, one end of the base 13 is a discharge port at the bottom of the crushing bin 6, and the other end is equipped with a driving motor 2; the driving motor 2 is connected to the crushing structure fixed in the crushing bin 6 through a power transmission system, driving the cutter teeth 7 on the crushing structure to mesh and operate, thereby crushing the coal sludge cake placed in the crushing bin 6.

[0029] like Figure 2 As shown, the crushing bin 6 is surrounded by side walls, the top is a feed port, and the bottom is a discharge port; the side walls include two driving side walls and two inclined side walls 15; the side walls are formed by connecting the driving side walls and the inclined side walls in sequence, and the bottom of the side walls is fixed on the base 13 of the body 1 to form a discharge port; the two driving side walls are two identical opposite sides and are vertically connected to the base, and the two inclined side walls 15 are parallel and are two identical opposite sides, forming an angle with the base 13, and the angle of the angle is set according to the movement trajectory of the coal slime cake during the crushing process on the inner wall of the crushing bin and the requirement that the crushed particles are freely scattered to the discharge port, so that the coal slime cake can reduce adhesion to the inner wall of the side wall after being crushed.

[0030] There are reinforced wear-resistant liners inside the side walls.

[0031] The crushing structure includes two groups of toothed rollers distributed up and down, the center axis of the toothed roller shaft is parallel to the inclined side wall 15 of the crushing bin, and the two ends of the toothed roller are fixed on the bearing seat of the driving side wall of the crushing bin;

[0032] When the two sets of toothed rollers distributed up and down are working, they drive the cutter teeth 7 on the two sets of toothed rollers to mesh and run, and crush the coal mud cake placed in the crushing bin; wherein, a preset gap is left between the front and rear cutter teeth, and the gap is used for the self-cleaning ability of the crushing structure when working.

[0033] The gear roller is composed of a cutter tooth 7, a tooth seat 5, a shaft sleeve 8 and a gear roller shaft; the cutter tooth 7 is fixed to the tooth seat 5 by screws, the tooth seat 5 is fixed to the shaft sleeve 8, and the shaft sleeve 8 is sleeved on the gear roller shaft; wherein the tooth seat is perpendicular to the center axis of the gear roller shaft, and the tooth seat is evenly arranged along the cross section of the gear roller shaft divided into three equal parts (i.e., distributed at ∠120°), so that the cutter tooth is evenly stressed.

[0034] Preferably, the tooth seat 5 and the shaft sleeve 8 are arranged at a preset angle, preferably 20°, and are welded to the shaft sleeve 8. The angle between the tooth seat 5 and the shaft sleeve 8 increases the contact area between the cutter teeth 7 and the coal slime cake, thereby improving the crushing effect of the coal slime.

[0035] like Figure 4a and Figure 4b As shown, based on the convenience of processing and manufacturing, preferably, each section of the shaft sleeve 8 is provided with three rows of nine tooth seats 5 for fixing the cutter teeth 7, and the distance between adjacent tooth seats 5 is set according to the width of the cutter teeth, preferably 50 mm, for refining the coal mud cake particles.

[0036] Preferably, the distance between the two sets of toothed rollers satisfies that the shortest distance of the rotating diameter of the blade teeth is no more than 15 mm, and the tooth seats on the two sets of toothed rollers are spaced and distributed in opposite directions, preferably arranged in opposite directions with a difference of 25 mm, to ensure that the two blade teeth are arranged in staggered directions. The staggered arrangement of the tooth seats and the distance design of the two sets of toothed rollers solve the problem of particle size of coal sludge crushing. The equipment made by giving the above parameters has been verified by experiments to meet the requirements of crushing coal sludge cakes into particles below 10 mm.

[0037] Preferably, the drive motor 2 adopts a 6-level motor, such as a ybk2-160m-6 motor; through the meshing transmission of two sets of gears in the power transmission system of the drive motor 2, the two sets of toothed roller shafts fixed in the crushing bin are driven to move in opposite directions.

[0038] The power transmission system is composed of a small pulley 3, a large pulley 4 and a V-belt group 14 on a driving motor 2, and an upper toothed roller shaft 10, a lower toothed roller shaft 11, an upper gear 9 and a lower gear 12 in a crushing structure; the small pulley drives the large pulley to rotate through the V-belt group sleeved thereon, the large pulley is mounted on the lower toothed roller shaft, thereby driving the lower toothed roller shaft to rotate, the lower gear is mounted on the lower toothed roller shaft, and then drives the lower gear to rotate, the lower gear and the upper gear are meshed with each other, the upper gear is mounted on the upper toothed roller shaft, the upper gear drives the upper toothed roller shaft to rotate, the cutter teeth are mounted on the upper toothed roller shaft and the lower toothed roller shaft, and then the rotation of the cutter teeth causes the coal sludge cake to be crushed. The soft connection driving mode of the power transmission system can effectively protect the equipment from damage caused by a jamming condition, and the upper toothed roller shaft and the lower toothed roller shaft can be driven in the opposite direction through the meshing transmission of two sets of gears, thereby increasing the stirring and crushing efficiency of the cutter teeth on the coal sludge cake.

[0039] Preferably, Figure 3a and Figure 3b As shown, the blade teeth are overall sickle-shaped, consisting of a handle, a blade body and a blade tip, which are processed as one piece. The handle gradually widens to the blade body, and the blade tip is bent sideways at a certain angle and narrowed into a triangle.

[0040] Preferably, by setting the initial position of the cutter teeth 7 of the upper tooth roller shaft 10 and the lower tooth roller shaft 11, the cutter teeth on the two tooth roller shafts can have a "deviation" of about 40° when running, and the tip of the subsequent cutter teeth and the root of the preceding cutter teeth run like "gear meshing", with a small running gap, which can fully crush the coal mud cake and prevent it from sticking to the cutter teeth.

[0041] The cutter teeth 7 are arranged along the perpendicular median line connecting the axis centers of the two toothed roller shafts, mirror-rotated at a preset angle, preferably at 40°; the center distance between the two toothed roller shafts is less than the sum of the maximum outer lengths of the two cutter teeth; the size of the large pulley, the small pulley, the speed of the driving motor, the size and number of teeth of the gear, the specification and shape of the cutter teeth, the arrangement rule of the cutter teeth and the spacing jointly control the effect of the coal mud cake after crushing.

[0042] The power transmission system of the present invention is driven by parallel pulleys, and the two sets of tooth rollers are driven by two gear meshing to form a counter-rotation mode. The staggered arrangement of the tooth seat and the distance design of the two sets of tooth rollers solve the problem of coal slime crushing particles. The equipment made by the given parameters is verified by experiments to meet the requirements of crushing coal slime cakes into particles below 10 mm; the angle between the tooth seat and the shaft sleeve increases the contact area between the blade teeth and the coal slime cake, improving the crushing effect of the coal slime; the sickle shape of the blade teeth ensures that the coal slime does not stick to the teeth; the two sets of tooth rollers are arranged in parallel and parallel to the inclined plate to ensure that there is no material blockage; the crushed particles of the coal slime cake fall directly on the clean coal belt to ensure that the coal slime particles do not adhere to the teeth again.

[0043] Working principle of the present invention: the high-moisture coal slime cake produced by the filter press enters the machine body 1 from the top feeding port of the crushing bin 6, and the driving motor 2 drives the upper tooth roller shaft 10 and the lower tooth roller shaft 11 to rotate in opposite directions. When the coal slime cake passes through the rotating cutter teeth 7, it is fully crushed by the cutter teeth of the upper and lower sets of tooth rollers. Because the crushing bin is inclined, it conforms to the movement trajectory of the coal slime in the machine body cavity, and is scattered on the clean coal belt directly below through the discharge port. At the same time, the dense and compact arrangement of the cutter teeth and the cutter teeth on the upper and lower tooth roller shafts form a "gear meshing" form of coordination. Combined with the special shape of the cutter teeth, the coal slime cake falling into the crusher cavity can be effectively finely cut, reducing the probability of coal slime adhering to the inner wall of the machine body, resulting in equipment blockage caused by coal slime accumulation, and the fine particles after crushing will not form secondary adhesion.

[0044] The invention arranges two groups of tooth rollers in parallel and parallel to the inclined side wall, and the inclined side wall forms an angle with the bottom, so that the coal mud cake can be reduced from sticking to the inner wall of the crushing bin after being crushed.

[0045] The tooth seat and the shaft sleeve are arranged at a preset angle, preferably 20 degrees. The angle between the tooth seat and the shaft sleeve increases the contact area between the cutter teeth and the coal slime cake, thereby improving the crushing effect of the coal slime.

[0046] The distance between the two sets of tooth rollers satisfies that the shortest distance of the rotating diameter of the cutter teeth is no more than 15mm. The tooth seats on the two sets of tooth rollers are not arranged symmetrically, but are spaced and distributed in opposite directions. Preferably, they are arranged in opposite directions with a difference of 25mm to ensure that the two cutter teeth are arranged in staggered directions. The staggered arrangement of the tooth seats and the distance design of the two sets of tooth rollers solve the particle problem of coal slime crushing. The equipment made by giving the above parameters has been verified by experiments to meet the requirements of crushing coal slime cakes into particles less than 10mm.

[0047] The two sets of gears in the power transmission system are meshed and driven to achieve reverse movement of the upper and lower tooth roller shafts, thereby increasing the stirring and crushing of the coal mud cake by the blade teeth.

[0048] It adopts 6-level motor as the power source; it has sufficient power output, simple transmission system, safe and reliable, and easy operation and maintenance.

[0049] It has wide adaptability and can be used for coal slime cakes with moisture content ranging from 0-30% and ash content ranging from 0-40%. The particle size after crushing can be controlled below 10mm and falls evenly from the discharge port without secondary accumulation, adhesion and aggregation. The coal slime cake can be directly mixed into clean coal after crushing to improve economic benefits. For example, the coal slime cake is sold at 60 yuan, and the clean coal is sold at 420 yuan, which directly increases the economic benefits by 360 yuan per ton.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fine particle coal sludge cake crusher that prevents crushed particles from adhering to the inner wall, characterized in that: It includes a machine body, a crushing structure and a driving motor; wherein, The machine body is composed of a base and a crushing bin with inclined side walls. One end of the base is a discharge port at the bottom of the crushing bin, and the other end is equipped with a drive motor. The drive motor is connected to a crushing structure fixed in the crushing bin through a power transmission system, driving the teeth on the crushing structure to mesh and operate, thereby crushing the coal sludge cake placed in the crushing bin. The crushing bin is surrounded by side walls, the top is a feed port, and the bottom is a discharge port; the side walls include two driving side walls and two inclined side walls; the side walls are formed by connecting the driving side walls and the inclined side walls in sequence, and the bottom of the side walls is fixed on the base of the machine body to form a discharge port; the two driving side walls are two identical opposite sides and are vertically connected to the base, and the two inclined side walls are parallel and are two identical opposite sides, forming an angle with the base, and the angle of the angle is set according to the motion trajectory of the coal sludge cake during the crushing process on the inner wall of the crushing bin and the requirement that the crushed particles are freely scattered to the discharge port; The crushing structure comprises two groups of toothed rollers distributed up and down; the toothed rollers are composed of cutter teeth, tooth seats, shaft sleeves and toothed roller shafts; the distance between the two groups of toothed rollers of the crushing structure satisfies that the shortest distance of the rotating diameter of the cutter teeth is no more than 15 mm, the tooth seats on the two groups of toothed rollers are spaced and distributed in opposite directions to ensure that the two cutter teeth are arranged in staggered directions; the tooth seats of the toothed rollers are perpendicular to the central axis of the toothed roller shaft, and the tooth seats are evenly arranged along the cross section of the toothed roller shaft in three equal parts of ∠120°; The blade teeth are shaped like a sickle as a whole, and are composed of a handle, a blade body and a blade tip, which are processed as one piece. The handle gradually widens towards the blade body, and the blade tip is bent sideways at a certain angle and narrowed into a triangle.

2. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 1, characterized in that: The central axis of the tooth roller shaft of the tooth roller is parallel to the inclined side wall of the crushing bin, and the two ends of the tooth roller are fixed on the bearing seat of the driving side wall of the crushing bin; When the two sets of toothed rollers distributed up and down are working, they drive the cutter teeth on the two sets of toothed rollers to mesh and crush the coal sludge cake placed in the crushing bin; among them, a preset gap is left between the front and rear cutter teeth, and this gap is used to ensure the self-cleaning ability of the crushing structure when working.

3. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 2, characterized in that: The cutter teeth are fixed on the tooth seat by screws, the tooth seat is fixed on the shaft sleeve, and the shaft sleeve is sleeved on the gear roller shaft.

4. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 3, characterized in that: The gear seat is arranged at a preset angle with the shaft sleeve and is welded to the shaft sleeve.

5. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 3 or 4, characterized in that: Each section of the shaft sleeve is provided with three rows of nine tooth seats for fixing the cutter teeth, and the distance between adjacent tooth seats is set according to the width of the cutter teeth.

6. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 1, characterized in that: The driving motor adopts a 6-stage motor; two sets of gears in the power transmission system of the driving motor are meshed and driven to drive two sets of toothed roller shafts fixed in the crushing bin to move in opposite directions.

7. A fine particle coal sludge cake crusher for preventing crushed particles from adhering to the inner wall as claimed in claim 1 or 6, characterized in that: The power transmission system is composed of a small pulley, a large pulley and a V-belt set on the driving motor, and an upper gear roller shaft, a lower gear roller shaft, an upper gear and a lower gear in the crushing structure; The small pulley drives the large pulley to rotate through the V-belt group sleeved thereon. The large pulley is installed on the lower gear roller shaft, thereby driving the lower gear roller shaft to rotate. The lower gear is installed on the lower gear roller shaft, thereby driving the lower gear to rotate. The lower gear and the upper gear are meshed with each other. The upper gear is installed on the upper gear roller shaft, and the upper gear drives the upper gear roller shaft to rotate. The knife teeth are installed on the upper gear roller shaft and the lower gear roller shaft, and then the rotation of the knife teeth causes the coal mud cake to be broken.

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