A type of forked roller compound crusher

Abstract

A forked roller composite crusher includes a forked crusher, a double-toothed roller crusher, a coal cake detection component, and a controller. The inlet of the double-toothed roller crusher is located directly below the outlet of the forked crusher. The forked crusher includes a crusher shell and a steel fork assembly. The steel fork assembly is mounted on the crusher shell and includes two sets of crushing components. Each set of crushing components includes a support frame, a linear reciprocating drive mechanism, and steel fork heads. The two sets of support frames are arranged opposite each other inside the crusher shell. Each set of support frames moves linearly reciprocally under the drive of the corresponding linear reciprocating drive mechanism. Several steel fork heads are provided on each set of support frames. This composite crusher can effectively crush the coal cake discharged from the filter press, allowing subsequent processing of the coal cake to continue. Furthermore, the entire crushing process requires no manual intervention, greatly improving crushing safety.

Description

Technical Field

[0001] This utility model relates to the field of filter press coal cake crushing technology, specifically a forked roller composite crusher. Background Technology

[0002] In the coal preparation process, the final step is coal slime compression and filtration, which uses a filter press to filter and press the coal slime water into coal cakes. Traditional filter presses operate at low pressure, producing soft, semi-dry, or viscous coal cakes. These cakes typically break up easily upon free fall as they enter the next stage of transport, thus generally not causing material jamming. However, with the advent of new high-pressure or ultra-high-pressure filter presses (such as the existing ultra-high-pressure plate filter press), the resulting coal cakes are both dry and hard. Because the coal cakes formed by the filter press are very large, generally exceeding 1.2 meters, they are difficult to break up upon free fall as they enter the next stage of transport, leading to material jamming, either preventing transport or causing equipment to become stuck. To solve this problem, the common practice now is to station workers near the next stage of equipment. If the falling coal cake pieces are too large, they are manually broken up by smashing or poking them. However, manually breaking up coal cakes is physically demanding and poses certain personal safety risks. Given the inherent safety risks associated with manually crushing coal cakes, some coal preparation plants install crushers in the discharge channels of filter presses. The most common and widely used crusher on the market is the double-toothed roller crusher. Due to the large size of the coal cakes discharged from the filter press, if the coal cakes fall vertically and are close to the bite of the double-toothed rollers, crushing will not be a problem. However, if the coal cakes fall horizontally into the double-toothed rollers, the teeth of the rollers will not be able to grip the coal cakes, causing the coal cakes to lie flat on the double-toothed rollers and the rollers to spin idly. Meanwhile, the coal cakes discharged from the filter press continue to flow, which can cause the coal cakes to clog the crushing process, leading to an accident and shutdown, and subsequently, a shutdown of the entire production line. Utility Model Content

[0003] The purpose of this invention is to provide a forked roller composite crusher, which can effectively crush the coal cake discharged from the filter press, so that the subsequent processing of the coal cake can continue; and the entire crushing process does not require manual intervention, which greatly improves the crushing safety.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a forked roller composite crusher, including a forked crusher, a double-toothed roller crusher, a coal cake detection component, and a controller. The feed inlet of the double-toothed roller crusher is located directly below the discharge outlet of the forked crusher. The forked crusher includes a crusher shell and a steel fork assembly. The steel fork assembly is disposed on the crusher shell and includes two sets of crushing components. Each set of crushing components includes a support frame, a linear reciprocating drive mechanism, and steel fork heads. The two sets of support frames are arranged opposite each other inside the crusher shell. Each set of support frames moves linearly reciprocally under the drive of the corresponding linear reciprocating drive mechanism. Several steel fork heads are disposed on each set of support frames, and the steel fork heads on the two sets of support frames are symmetrically distributed. The coal cake detection component is disposed on the upper part of the crusher shell and is used to detect whether there is a coal cake falling above the crushing space between the two sets of support frames. The controller is used to control the operation of the linear reciprocating drive mechanism.

[0005] Preferably, the forked roller compound crusher further includes an adjusting guide cover, which is vertically continuous and located directly above the crushing space between the two sets of support frames. The upper end of the adjusting guide cover is in the shape of an inverted truncated pyramid, and the lower end of the adjusting guide cover is in the shape of a cuboid. The width of the lower end of the adjusting guide cover is distributed along the movement direction of the linear reciprocating drive mechanism.

[0006] Furthermore, the coal cake detection assembly includes several photoelectric detection switches, which are electrically connected to the controller. Several photoelectric detection switches are provided on the upper part of the left and right side walls of the crusher casing, and are equally spaced along the front-back direction. In the longitudinal direction, the photoelectric detection switches are adjacent to the support frame vertically.

[0007] Furthermore, adjustment plates corresponding to the photoelectric detection switch are provided on the upper part of the left and right side walls of the crusher casing. The photoelectric detection switch can be adjusted up and down and positioned on the corresponding adjustment plates.

[0008] Furthermore, the linear reciprocating drive mechanism is located on the outside of the crusher casing, and a guide rod is provided on both the front and rear sides of each set of support frames, the guide rod being slidably sleeved on the crusher casing.

[0009] Furthermore, the linear reciprocating drive mechanism is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

[0010] Furthermore, the head of the steel fork is conical.

[0011] Furthermore, three equally spaced arc-shaped grooves are provided on the arc-shaped side of the head of the steel fork, and the thickness of the separating rib between two adjacent arc-shaped grooves gradually increases from the top to the rear.

[0012] The beneficial effects of this utility model are: the utility model has a simple structure and is convenient to process and manufacture; by using the combination of the fork crusher and the double roller tooth crusher, the coal cake can be effectively crushed, which facilitates the subsequent processing of the coal cake. At the same time, no manual intervention is required during the crushing process, which greatly improves the crushing safety; in the early stage of crushing, the adjusting guide cover can be used to adjust the falling posture of the coal cake, so that when the coal cake falls between the two support frames, its width direction is basically consistent with the reciprocating movement direction of the two support frames, which facilitates the subsequent use of the opposing steel fork heads to crush the coal cake by opposite compression. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the crushing component.

[0016] Figure 3 A schematic diagram showing the state of coal cake falling into the adjusting guide shroud on the conveyor belt;

[0017] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 5 for Figure 3 Enlarged view at point B in the middle;

[0019] In the diagram: 1. Fork crusher, 11. Crusher shell, 111. Adjusting plate, 112. Oblong hole, 12. Support frame, 121. Guide rod, 13. Cylinder, 14. Steel fork head, 141. Arc groove, 142. Dividing rib, 2. Double toothed roller crusher, 21. Machine shell, 22. Rotating roller, 23. Crushing teeth, 3. Photoelectric detection switch, 4. Adjustment guide cover, 41. Upper end, 42. Lower end, 5. Conveyor belt, 6. Coal cake. Detailed Implementation

[0020] The following will describe specific embodiments and appendices. Figure 1-5The technical solutions in the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] This utility model provides a forked roller compound crusher (such as...) Figure 1As shown, the system includes a fork crusher 1, a double-toothed roller crusher 2, a coal cake detection component, and a controller. The double-toothed roller crusher 2 is a known mature technology product on the market. It mainly includes a casing 21 and two rotating rollers 22. The two rotating rollers 22 are set inside the casing 21 and rotate in opposite directions. Several crushing teeth 23 are set on the upper part of the rotating rollers 22. During the rotation of the rotating rollers 22, the crushing teeth 23 are used to crush the material. The controller can be a PLC controller commonly used in the field of industrial automation. The feed inlet of the double-toothed roller crusher 2 is located directly below the discharge outlet of the fork crusher 1. In actual application, after the coal cake 6 is initially crushed by the fork crusher 1, it falls directly into the double-toothed roller crusher 2. The coal cake 6 is then subjected to secondary crushing using a double-toothed roller crusher 2. After secondary crushing, the volume of the coal cake 6 is greatly reduced, thus preventing material jamming during subsequent processing and ensuring the smooth operation of the coal cake 6. The fork-type crusher includes a crusher shell 11 and a steel fork assembly. The steel fork assembly is mounted on the crusher shell 11 and includes two sets of crushing components. Each set of crushing components includes a support frame 12, a linear reciprocating drive mechanism, and a steel fork head 14. The two sets of support frames 12 are arranged opposite each other inside the crusher shell 11. Each set of support frames 12 moves linearly and reciprocally under the drive of the corresponding linear reciprocating drive mechanism. Several [unclear text - possibly related to a specific type of crusher] are provided on each set of support frames 12. The steel fork heads 14, and the steel fork heads 14 on the two sets of support frames 12 are symmetrically distributed from left to right. In actual application, when a coal cake 6 passes between the two support frames 12, the linear reciprocating drive mechanism immediately drives the support frame 12 to extend, thereby using multiple opposing steel fork heads 14 to achieve the opposing compression of the coal cake 6, and achieving the crushing of the coal cake 6 during the compression process. The existing coal slime filter press is generally a plate filter press. The coal cake 6 discharged from the plate filter press is generally rectangular. In order to facilitate the effective compression of the coal cake 6 by the two support frames 12, the length of the support frame 12 is about 20cm longer than the diagonal length of the coal cake 6. Furthermore, the support frame 12 is far away from the crushing... Two rows of steel forks are provided on the side of the crusher casing 11. One row of steel forks is located in the upper area of ​​the support frame 12, and the other row of steel forks is located in the lower area of ​​the support frame 12. Each row of steel forks includes several steel forks 14. Furthermore, since the coal cake 6 is intercepted and crushed by the steel forks 14 during free fall, in order to improve the reliability of the steel forks 14 in intercepting the coal cake 6, the distance between the two steel forks 14 facing each other on the left and right is about 20cm larger than the thickness of the coal cake 6 in the initial working position. This makes the extension of the steel forks 14 shorter when intercepting the coal cake 6, which facilitates the interception and crushing of the freely falling coal cake 6 and ensures the effective crushing of the coal cake 6 in the initial stage.The coal cake detection component is located on the upper part of the crusher casing 1 and is used to detect whether a coal cake 6 is falling above the crushing space between the two sets of support frames 12. In actual application, the coal cake 6 falls under the action of gravity. The coal cake detection component is located on the upper part of the support frame 12. After the coal cake detection component detects the presence of a coal cake 6, it will fall between the two support frames 12 as the coal cake continues to fall. When the coal cake is between the two support frames 12, the support frames 12 will quickly extend and move, and then the steel fork head 14 will be used to crush the coal cake 6 during the falling process. The controller is used to control the operation of the linear reciprocating drive mechanism. Specifically, the controller uses whether the coal cake detection component sends a detection signal indicating that a coal cake 6 has been detected as the control condition to control the operation of the linear reciprocating drive mechanism.

[0022] When crushing coal cake 6 using the steel fork head 14, if the width direction of coal cake 6 is basically consistent with the reciprocating movement direction of the support frame 12, it is convenient to effectively crush coal cake 6 by using the steel fork head 14. Based on the above embodiment, in order to ensure that the width direction of coal cake 6 is basically consistent with the reciprocating movement direction of the two support frames 12 when it falls between the two support frames 12, the fork roller composite crusher also includes an adjusting guide cover 4, which is vertically open, i.e., falling into the... The coal cake 6 inside the adjusting guide hood 4 can flow smoothly out from its bottom after being guided by it; the adjusting guide hood 4 is located directly above the crushing space between the two sets of support frames 12, so as to ensure that the coal cake 6 flowing out from the adjusting guide hood 4 will enter between the two support frames 12. The upper end 41 of the adjusting guide hood 4 is in the shape of an inverted quadrangular pyramid, and the lower end 42 of the adjusting guide hood 4 is in the shape of a cuboid, and the width direction of the lower end 42 of the adjusting guide hood is distributed along the movement direction of the linear reciprocating drive mechanism. In practical applications, the coal cake 6 flows out of the discharge end of the conveyor belt 5 in a flat position and falls freely. After the coal cake 6 separates from the conveyor belt 5, it generally maintains a certain tilted posture. After the coal cake 6 with a certain tilted posture falls into the upper end 41, it is guided and adjusted by the combination of the upper end 41 and the lower end 42, so that the coal cake 6 can basically maintain a relatively vertical falling posture and fall from the bottom of the adjustment guide cover 4. The coal cake 6 falling vertically is then easily crushed by the relative steel fork heads 14 after passing between the two support frames 12.

[0023] Based on the above embodiments, the specific implementation of the coal cake detection component is as follows: The coal cake detection component includes several photoelectric detection switches 3, which are electrically connected to the controller. Several photoelectric detection switches 3 are evenly distributed along the front-back direction on the upper part of the left and right side walls of the crusher housing 11. In the longitudinal direction, the photoelectric detection switches 3 are adjacent to the support frame 12 vertically, that is, the photoelectric detection switches 3 and the support frame 12 are relatively close in the vertical direction. When the photoelectric detection switch 3 detects the coal cake 6, it indicates that a coal cake 6 has fallen. Since the coal cake 6 falls freely, during the time period from when the photoelectric detection switch 3 detects the coal cake 6 to when the controller starts the linear reciprocating drive mechanism using the signal of detecting the coal cake 6, the lower part of the coal cake 6 must have entered between the two support frames 21. Therefore, the coal cake 6 can be crushed by using two relatively moving steel forks 14. Since the height between the discharge end of the conveyor belt 5 and the support frame 12 is fixed, and the position of the adjusting guide cover 4 is also fixed, the falling trajectory and speed of the coal cake 6 are basically fixed. At the same time, the detection response time of the photoelectric detection switch 3, the time for the controller to start the linear reciprocating drive mechanism, and the speed and time for the linear reciprocating drive mechanism to move the support frame 12 are basically fixed. Therefore, by using the cooperation of the photoelectric detection switch 3, the controller and the linear reciprocating drive mechanism, the steel fork head 14 can be used to intercept and squeeze the falling coal cake 6.

[0024] Based on the above embodiments, in order to facilitate the position adjustment of the photoelectric detection switch 3 so as to achieve smooth interception and crushing of the coal cake 6, an adjustment plate 111 corresponding to the photoelectric detection switch 3 can be provided on the upper part of the left and right side walls of the crusher housing 11. The photoelectric detection switch 3 can be adjusted up and down and positioned on the corresponding adjustment plate 111. Specifically, an elongated hole 112 is provided on each adjustment plate 111, and the detection end of the photoelectric detection switch 3 is fixed in the elongated hole 112.

[0025] Based on the above embodiments, the specific implementation of the linear reciprocating drive mechanism is as follows: the linear reciprocating drive mechanism is disposed on the outside of the crusher housing 11, and a guide rod 121 is provided on both the front and rear sides of each set of support frames 12. The guide rod 121 is slidably sleeved on the crusher housing 11. Further, the linear reciprocating drive mechanism is a pneumatic cylinder 13, an electric cylinder, or a hydraulic cylinder. The pneumatic cylinder 13 has a faster extension speed, so the rapid extension characteristic of the pneumatic cylinder 13 facilitates the stopping and crushing of the coal cake 6. In this specific embodiment, the linear reciprocating drive mechanism... The cylinder 13 is selected as the component. The controller realizes the reciprocating motion control of the cylinder 13 through the electromagnetic reversing valve in the pneumatic transmission system of the cylinder 13. In actual application, the extension stroke of the support frame 12 can be realized by controlling the extension stroke of the cylinder 13. Then, the minimum distance between the two left and right opposite steel fork heads 14 can be realized by controlling the stroke of the cylinder 13. In this specific embodiment, when the cylinder 13 extends to the position, the distance L1 between the two left and right opposite steel fork heads 14 can be 5mm. The smaller the value of L1, the easier it is to improve the crushing effect of the coal cake 6.

[0026] Based on the above embodiments, in order to improve the crushing effect of the steel fork head 14 on the coal cake 6, the head of the steel fork head 14 is made conical. Furthermore, three equally spaced arc-shaped grooves 141 are provided on the arc-shaped side of the head of the steel fork head 14, and the thickness of the dividing rib 142 between two adjacent arc-shaped grooves 141 gradually increases from the top to the rear. The design of the arc-shaped grooves 141 can reduce the resistance encountered by the steel fork head 14 during compression, which facilitates the smooth movement of the steel fork head 14. During the movement of the steel fork head 14, the change in the cross section of the dividing rib 142 can facilitate the tearing of the coal cake 6, thereby improving the crushing effect.

[0027] In the actual crushing process of coal cake 6, in order to facilitate the effective intermittent crushing of coal cake 6, the coal cake 6 on the conveyor belt 5 is kept at a certain interval to allow sufficient time for subsequent crushing of coal cake 6. When the conveyor belt 5 moves slowly at a certain speed, the coal cake 6 continuously falls into the adjusting guide hood 4. After the adjusting guide hood 4 is adjusted, the coal cake 6 falls from the bottom of the adjusting guide hood 4. When the photoelectric detection switch 3 detects the coal cake 6, the controller starts the cylinder 13 according to the detection signal issued by the photoelectric detection switch 3. The cylinder 13 then quickly pushes the support frame 12 to extend. During the rapid extension of the support frame 12, the coal cake 6 is crushed by compression. The small volume coal cake 6 formed after compression and crushing falls directly into the double toothed roller crusher 3 under the action of gravity to continue to be crushed by compression, thereby achieving further crushing of the coal cake 6. After the cylinder 13 quickly extends to the position, it quickly returns to the initial position to prepare for the next compression and crushing operation.

[0028] In this utility model, "upper", "lower", "front", "back", "left", and "right" are all relative positions used to facilitate the description of positional relationships, and therefore cannot be understood as absolute positions as limitations on the scope of protection.

[0029] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

[0030] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those skilled in the art, several improvements and modifications can be made without departing from the concept of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A combination crusher with a jaw roll, characterized in that, The system includes a fork crusher, a double-toothed roll crusher, a coal cake detection component, and a controller. The feed inlet of the double-toothed roll crusher is located directly below the discharge outlet of the fork crusher. The fork crusher includes a crusher shell and a steel fork assembly. The steel fork assembly is mounted on the crusher shell and includes two sets of crushing components. Each set of crushing components includes a support frame, a linear reciprocating drive mechanism, and steel fork heads. The two sets of support frames are arranged opposite each other inside the crusher shell. Each set of support frames moves linearly reciprocally under the drive of the corresponding linear reciprocating drive mechanism. Several steel fork heads are provided on each set of support frames, and the steel fork heads on the two sets of support frames are symmetrically distributed. The coal cake detection component is located on the upper part of the crusher shell and is used to detect whether there is a coal cake falling above the crushing space between the two sets of support frames. The controller is used to control the operation of the linear reciprocating drive mechanism.

2. A sprocket roller compound crusher according to claim 1, characterized in that The forked roller compound crusher also includes an adjusting guide cover, which is vertically continuous and located directly above the crushing space between the two sets of support frames. The upper end of the adjusting guide cover is in the shape of an inverted truncated pyramid, and the lower end of the adjusting guide cover is in the shape of a cuboid. The width of the lower end of the adjusting guide cover is distributed along the movement direction of the linear reciprocating drive mechanism.

3. A sprocket roller compound crusher according to claim 2, characterised in that The coal cake detection assembly includes several photoelectric detection switches, which are electrically connected to the controller. Several photoelectric detection switches are provided on the upper part of the left and right side walls of the crusher casing, which are equally spaced along the front-back direction. In the longitudinal direction, the photoelectric detection switches are adjacent to the support frame vertically.

4. A sprocket roller compound crusher according to claim 3, characterised in that An adjustment plate corresponding to the photoelectric detection switch is provided on the upper part of the left and right side walls of the crusher casing. The photoelectric detection switch can be adjusted up and down and positioned on the corresponding adjustment plate.

5. A sprocket roller compound crusher as claimed in claim 3, wherein, The linear reciprocating drive mechanism is located on the outside of the crusher casing. A guide rod is provided on both the front and rear sides of each set of support frames, and the guide rod is slidably sleeved on the crusher casing.

6. A sprocket roller compound crusher as claimed in claim 4, wherein, The linear reciprocating drive mechanism is a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder.

7. A sizer crusher as claimed in any one of claims 3 to 6, wherein, The head of the steel fork is conical.

8. A sprocket roller compound crusher according to claim 7, characterised in that the sprocket roller (1) is arranged to rotate in the same direction as the crushing shaft (2). The steel fork head has three equally spaced arc-shaped grooves on its arc-shaped side surface, and the thickness of the separating rib between two adjacent arc-shaped grooves gradually increases from the top to the rear.

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