Environment-friendly sand making system for mine

Abstract

The application discloses an environment-friendly sand making system for mines, which is provided with a feeding hopper, a belt conveyor and a compression crusher. The discharging action of the feeding hopper, the conveying action of the belt conveyor and the crushing action of the compression crusher are linkage performed in the same period. A first linkage member is arranged on the side of the control roller at the feeding end, and a second linkage member is arranged close to the control roller at the discharging end. The control roller rotates to perform the conveying action of the belt conveyor, and drives the control material assembly to perform the opening and closing action through the first linkage member and drives the movable jaw plate to reciprocate through the second linkage member. In the application, the control material assembly is periodically opened and closed to control the step-by-step discharging of the sand and stone in the feeding hopper, so that the material conveying amount per unit time is reduced. The crushing action of the compression crusher is performed on the quantitative stone each time, and the crushed stone amount each time is controlled, so that the compression crusher is prevented from being blocked, and the sand making system is continuously, effectively and stably performed.

Description

Technical Field

[0001] This invention relates to the field of sand making technology in mining, specifically to an environmentally friendly sand making system for mining. Background Technology

[0002] River sand can be used as construction sand, but the extraction of river sand causes great damage to the ecological balance of the environment. Therefore, the use of crushed sand and gravel to make construction sand is an inevitable trend now and in the future. Sand and gravel are generally obtained through mining. In the process of sand making in mines, the stones mined from the mine are transported by conveying equipment, and then crushed, washed and made into sand. In the conveying equipment, most of them use the combination of hoppers and conveyor belts. A loader is used to put a large amount of stone into the hopper at once, and then the conveyor belt is used to gradually transport the stone in the hopper into the crusher. When the conveyor belt stops, there are still stones in the hopper, which will continue to be discharged under gravity, resulting in waste.

[0003] To address the aforementioned issues, invention patent application number 202111171234.9 discloses an environmentally friendly and efficient sand-making system for mining, in which the conveyor belt and the material discharge rollers inside the hopper move simultaneously, enabling the simultaneous discharge and transportation of stone materials from the hopper, thus avoiding waste.

[0004] Stone is transported to the crushing mechanism via a conveyor belt for crushing. The crushing mechanism has a screen gap of a certain size. Only sand particles of a certain fine size can pass through the gap. If there is too much stone and it cannot be crushed in one go, it may cause the stone to accumulate at the crushing mechanism. The lack of coordination between the conveyor belt and the crushing mechanism, continuous conveying of stone, and long-term accumulation will cause the internal structure of the crushing mechanism to be overloaded, resulting in poor crushing effect and easy damage to the crushing mechanism itself. Summary of the Invention

[0005] Therefore, the present invention provides an environmentally friendly sand making system for mining, which effectively solves the problems of lack of coordination and linkage between the conveyor belt and the crushing mechanism in the prior art, long-term accumulation in the crushing mechanism causing structural load on the crushing mechanism, poor crushing effect and easy damage to the crushing mechanism itself.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: an environmentally friendly sand making system for mining, comprising:

[0007] A feeding hopper is provided with a material control component inside. The material control component is sealed in the feeding channel inside the feeding hopper. The material control component opens and closes periodically to control the step-by-step feeding of sand and gravel in the feeding hopper. After the material control component performs the opening action for at least a period of time, the feeding channel gradually tends to be open.

[0008] The belt conveyor has its feed end facing the discharge end of the feed hopper. The belt conveyor is equipped with partitions at equal intervals, and control rollers are installed at the beginning and end of the belt conveyor.

[0009] The pressure crusher has its feed inlet facing the discharge end of the belt conveyor. The pressure crusher is equipped with a fixed jaw plate and a movable jaw plate, and the sand and gravel between the fixed jaw plate and the movable jaw plate are squeezed and crushed by the reciprocating motion of the movable jaw plate.

[0010] The feeding action of the hopper, the conveying action of the belt conveyor, and the crushing action of the pressure crusher are carried out in a coordinated manner at the same time, with the belt conveyor serving as the main driving source.

[0011] A first linkage is provided on the side of the control roller located at the feeding end, and a second linkage is provided near the control roller located at the unloading end. The first linkage is movably connected to the material control component, and the second linkage is movably connected to the moving jaw plate. The control roller rotates to perform the conveying action of the belt conveyor, and drives the material control component to perform opening and closing actions through the first linkage, and drives the moving jaw plate to reciprocate through the second linkage.

[0012] Furthermore,

[0013] A centrifugal groove is provided inside the control roller located at the feeding end. The centrifugal groove is arranged along the length direction of the control roller, and the center position of the centrifugal groove is offset from the central axis position of the control roller.

[0014] The second linkage component includes a bearing seat located on the side of the control roller at the feeding end and a linkage shaft column located inside the bearing seat;

[0015] The linkage shaft is connected to the shaft seat via a torsion spring, and the center position of the linkage shaft coincides with the center axis position of the control roller.

[0016] Furthermore,

[0017] The inner wall of the centrifugal groove is provided with at least two actuating protrusions, and the outer circumference of the linkage shaft column is provided with follower protrusions.

[0018] The combined length of the follower protrusion and the actuating protrusion is less than the maximum distance between the centrifugal groove and the linkage shaft column.

[0019] Furthermore,

[0020] The first linkage shaft is connected to the end of the linkage shaft column;

[0021] The pressure crusher is provided with a drive chamber, the movable jaw plate is rotatably installed at the opening of the drive chamber, a connecting plate is provided in the drive chamber, a toothed plate is connected to the connecting plate, a second linkage shaft is rotatably provided on the toothed plate corresponding to the center position, and a first linkage rod is connected to the second linkage shaft;

[0022] A transmission chain is provided between the first linkage shaft and the second linkage shaft, and the transmission chain meshes with the first linkage shaft and the second linkage shaft.

[0023] Furthermore,

[0024] A meshing wheel is engaged on the gear plate, and the end of the first linkage rod is rotatably positioned at the center of the meshing wheel;

[0025] The inner wall of the moving jaw plate abuts against the side of the meshing wheel away from the toothed plate;

[0026] The inner wall of the moving jaw plate is provided with a corrugated section, the groove of the corrugated section is larger than the width of the teeth on the meshing wheel, and the teeth on the meshing wheel abut against the corrugated section.

[0027] Furthermore,

[0028] The first linkage component includes a connecting shaft rod connected to the control roller and a second linkage rod disposed at both ends of the connecting shaft rod;

[0029] The connecting shaft is connected to the control roller located at the feeding end. The connecting shaft is arranged along the length of the control roller and is close to the side of the control roller. A mounting seat is provided on the side of the control roller. A main control rod is rotatably connected to the mounting seat. The end of the connecting shaft is rotatably connected to the side of the main control rod.

[0030] Furthermore,

[0031] A third linkage rod is rotatably connected to the main control rod near the connecting shaft rod. A movable shaft rod is hinged to the side of the third linkage rod. A positioning cylinder seat is provided around the movable shaft rod. The movable shaft rod is movably disposed in the positioning cylinder seat.

[0032] A connecting ring is provided outside the movable shaft, and a connecting spring is provided between the connecting ring and the positioning cylinder seat. One end of the connecting spring is connected to the connecting ring, and the other end is connected to the positioning cylinder seat.

[0033] Furthermore,

[0034] The inner cavity of the feeding hopper is inverted conical, and a material control hole is formed at the bottom;

[0035] The material control assembly includes a material control plate disposed in the feeding hopper and a planar groove disposed in the feeding hopper. The material control plate has at least a partial opening for a material inlet, the size of which is the same as the size of the material control hole.

[0036] Furthermore,

[0037] The point at which the feed inlet begins to coincide with the control hole corresponds to the point at which the main control rod rotates at least a certain angle, and the point at which the feed inlet completely coincides with the control hole corresponds to the point at which the main control rod rotates to its maximum angle.

[0038] Furthermore,

[0039] The inner cavity of the feeding hopper is funnel-shaped, and a material control hole is formed in the middle position;

[0040] The material control assembly includes a conical material control column and a sealing column disposed on the conical material control column. The conical material control column fits into part of the inner wall of the lower part of the upper hopper, and the size of the sealing column is the same as the size of the material control hole.

[0041] The time when the sealing column moves to its lowest position corresponds to the time when the main control rod rotates at its maximum angle, and the time when the conical control column is completely in contact with the inner wall of the feeding hopper corresponds to the time when the main control rod rotates at its maximum angle.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] In this invention, the material control component opens and closes periodically to control the step-by-step feeding of sand and gravel in the hopper. After the material control component performs the opening action for at least a period of time, the feeding channel gradually tends to open, and the step-by-step feeding is implemented, which reduces the amount of material transported per unit time and reduces the situation of sand clogging at the compression crusher.

[0044] In addition, with the belt conveyor as the main driving source, the feeding action of the hopper, the conveying action of the belt conveyor, and the crushing action of the compression crusher are carried out in a coordinated manner at the same time. The control roller rotates to carry out the conveying action of the belt conveyor, and the first linkage drives the material control component to perform the opening and closing action, and the second linkage drives the moving jaw plate to reciprocate. Through continuous stone transportation, the periodic stone feeding and stone crushing actions are driven. Each crushing action of the compression crusher is carried out on a fixed amount of stone, and the amount of stone crushed each time is controlled to avoid blockage in the compression crusher and ensure the continuous, effective and stable operation of the sand making system. Attached Figure Description

[0045] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of the feeding hopper in an environmentally friendly sand making system for mining, according to an embodiment of the present invention.

[0047] Figure 2 for Figure 1 A schematic diagram of the structure of the control roller rotating half a revolution;

[0048] Figure 3 This is a schematic diagram of the structure of the feeding hopper in an environmentally friendly sand making system for mining, according to a second embodiment of the present invention.

[0049] Figure 4 for Figure 3 A schematic diagram of the structure of the control roller rotating half a revolution;

[0050] Figure 5 This is a schematic diagram of the structure of the compression crusher and the second linkage component in an embodiment of the present invention;

[0051] Figure 6 for Figure 5 A schematic diagram of a compression crusher in which the control roller rotates half a revolution to perform the crushing action;

[0052] Figure 7 This is a schematic diagram of the installation structure of the linkage shaft column in an embodiment of the present invention;

[0053] Figure 8 This is a schematic diagram of the cross-sectional structure of the control roller located at the discharge end in an embodiment of the present invention;

[0054] Figure 9 This is a schematic diagram of the structure of the follower protrusion in an embodiment of the present invention, in which the follower protrusion rotates a certain angle following the push protrusion.

[0055] Figure 10 This is a schematic diagram of the resetting structure of the follower protrusion in an embodiment of the present invention;

[0056] Figure 11 This is a schematic diagram of the feeding hopper in the first embodiment of the present invention;

[0057] Figure 12 This is a schematic diagram of the structure of the feeding hopper in the second embodiment of the present invention.

[0058] The labels in the diagram represent the following:

[0059] 1-Feeding hopper; 2-Belt conveyor; 3-Compression crusher; 4-Material control assembly; 5-Feeding channel; 6-First linkage component; 7-Second linkage component; 8-Baffle plate; 9-Material control hole;

[0060] 21-Control roller; 22-Centrifugal trough;

[0061] 31-Fixed jaw plate; 32-Modible jaw plate; 33-Driving cavity;

[0062] 41-Control plate; 42-Flat groove; 43-Inlet; 44-Conical control column; 45-Sealing column;

[0063] 61-Connecting shaft; 62-Second linkage rod; 63-Mounting shaft seat; 64-Main control rod; 65-Third linkage rod; 66-Modible shaft; 67-Positioning sleeve seat; 68-Connecting ring; 69-Connecting spring;

[0064] 71-Shaft seat; 72-Linkage shaft column; 73-Torsion spring; 74-Actuating protrusion; 75-Following protrusion; 76-First linkage shaft; 77-Connecting plate; 78-Gear tooth plate; 79-Second linkage shaft; 710-First linkage rod; 711-Transmission chain; 712-Meshing wheel; 713-Corrugated section. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention provides an environmentally friendly sand making system for mining, comprising a feeding hopper 1, a belt conveyor 2, and a pressure crusher 3.

[0067] The feeding hopper 1 is equipped with a material control component 4, which is sealed in the feeding channel 5 inside the feeding hopper 1. The material control component 4 opens and closes periodically to control the step-by-step feeding of sand and gravel in the feeding hopper 1. After the material control component 4 performs the opening action for at least a period of time, the feeding channel 5 gradually tends to open. The material control component 4 makes the feeding process of the feeding hopper intermittent, and each feeding is a process in which the amount of material gradually increases and then gradually decreases.

[0068] The feed end of the belt conveyor 2 is directly opposite the discharge end of the hopper 1. The belt conveyor 2 is equipped with partitions 8 at equal intervals. The belt conveyor 2 is supported by control rollers 21 at both ends. The control rollers 21 drive the belt conveyor 2 to transport forward.

[0069] The feed inlet of the compression crusher 3 is directly opposite the discharge end of the belt conveyor 2. The compression crusher 3 is equipped with a fixed jaw plate 31 and a movable jaw plate 32. The sand and gravel between the fixed jaw plate 31 and the movable jaw plate 32 are squeezed and crushed by the reciprocating motion of the movable jaw plate 32. The fixed jaw plate 31 is fixed and stationary, and the movement of the movable jaw plate 32 realizes the squeezing and crushing.

[0070] Among them, the feeding action of the feeding hopper 1, the conveying action of the belt conveyor 2, and the crushing action of the pressure crusher 3 are carried out in a coordinated manner at the same time, with the belt conveyor 2 serving as the main driving source.

[0071] A first linkage 6 is provided on the side of the control roller 21 located at the feeding end, and a second linkage 7 is provided near the control roller 21 located at the unloading end. The first linkage 7 is movably connected to the material control component 4, and the second linkage 7 is movably connected to the moving jaw plate 32. The control roller 21 rotates to perform the conveying action of the belt conveyor 2, and drives the material control component 4 to perform opening and closing actions through the first linkage 6, and drives the moving jaw plate 32 to reciprocate through the second linkage 7.

[0072] In this invention, the material control component 4 opens and closes periodically to control the step-by-step feeding of sand and gravel in the feeding hopper 1. After the material control component 4 performs the opening action for at least a period of time, the feeding channel gradually tends to open, and the step-by-step feeding is implemented, which reduces the amount of material transported per unit time (controlling the amount of material fed at one time) and reduces the situation of sand clogging at the pressure crusher.

[0073] In addition, with the belt conveyor 2 as the main driving source, the feeding action of the hopper 1, the conveying action of the belt conveyor 2, and the crushing action of the pressure crusher 3 are carried out in a coordinated manner at the same time. The control roller 21 rotates to carry out the conveying action of the belt conveyor 2, and drives the material control component 4 to perform opening and closing actions through the first linkage 6, and drives the moving jaw plate 32 to reciprocate through the second linkage 7. Through continuous stone transportation, periodic stone feeding and stone crushing actions are driven. Each crushing action of the pressure crusher 3 is carried out on a fixed amount of stone and the amount of crushed stone is controlled each time to avoid blockage in the pressure crusher 3 and ensure the continuous, effective and stable operation of the sand making system.

[0074] The following discussion focuses on two main parts: the linkage between belt conveyor 2 and crusher 3, and the linkage between hopper 1 and belt conveyor 2.

[0075] I. The structure of the linkage between belt conveyor 2 and crusher 3 is as follows:

[0076] like Figure 5 and Figure 6 , Figure 7 As shown, a centrifugal groove 22 is provided in the control roller 21 located at the feeding end. The centrifugal groove 22 is arranged along the length of the control roller 21. The center position of the centrifugal groove 22 is offset from the central axis position of the control roller 21. The second linkage 7 includes a bearing seat 71 arranged on the side of the control roller 21 located at the feeding end and a linkage shaft column 72 arranged in the bearing seat 71. The linkage shaft column 72 is connected to the bearing seat 71 through a torsion spring 73. The center position of the linkage shaft column 72 coincides with the central axis position of the control roller 21.

[0077] During the rotation of the control roller 21, it can drive the linkage shaft column 72 to rotate at a certain angle. When it rotates at a certain angle, it returns to the initial position under the action of the torsion spring 73. Due to the position limitation of the shaft seat 71, whether it is following the rotation process of the control roller 21 or the reset process, it is a rotational action centered on the position of the central axis.

[0078] To ensure that after the linkage shaft column 72 has rotated a certain angle, the control roller 21 can no longer drive the linkage shaft column 72 to rotate, the present invention makes the following design, as follows: Figure 8 , Figure 9 and Figure 10 As shown, the inner wall of the centrifugal groove 22 is provided with at least two actuating protrusions 74, and the outer periphery of the linkage shaft column 72 is provided with a follower protrusion 75. The sum of the lengths of the follower protrusion 75 and the actuating protrusion 74 is less than the maximum distance between the centrifugal groove 22 and the linkage shaft column 72.

[0079] In the above embodiment, the control roller 21 always rotates in a clockwise direction, such as Figure 8 As shown, when the actuating protrusion 74 rotates to the side of the follower protrusion 75, it can drive the follower protrusion 75 to rotate, thereby driving the linkage shaft column 72 to rotate. Due to the centrifugal setting of the centrifugal groove 22, during the rotation process, the follower protrusion 75 gradually moves away from the actuating protrusion 75 in the length direction, as shown. Figure 9 and Figure 10 As shown, when completely disengaged from the actuating protrusion 75, the follower protrusion 75 will no longer rotate with the actuating protrusion 74, and the linkage shaft 72 can be reset under the action of the torsion spring 73.

[0080] In this invention, two actuating protrusions 74 are provided in the centrifugal groove 22. That is to say, when the control roller 21 rotates once, it drives the linkage shaft column 72 to rotate and reset twice.

[0081] In order to ensure that the rotation of the linkage shaft 72 corresponds to the crushing action of the moving jaw plate 32, the present invention makes the following design, such as... Figure 5 and Figure 6As shown, the first linkage shaft 76 is connected to the end of the linkage column 72. The pressure crusher 3 is provided with a drive chamber 33. The moving jaw plate 32 is rotatably installed at the opening of the drive chamber 33. A connecting plate 77 is provided in the drive chamber 33. A gear tooth plate 78 is connected to the connecting plate 77. A second linkage shaft 79 is rotatably provided at the center position of the gear tooth plate 78. A first linkage rod 710 is connected to the second linkage shaft 79. A transmission chain 711 is provided between the first linkage shaft 76 and the second linkage shaft 79. The transmission chain 711 meshes with the first linkage shaft 76 and the second linkage shaft 79.

[0082] A meshing wheel 712 is engaged on the gear plate 78, and the end of the first linkage rod 710 is rotatably positioned at the center of the meshing wheel 712. The inner wall of the moving jaw plate 32 abuts against the side of the meshing wheel 712 away from the gear plate 78.

[0083] When the linkage shaft 72 rotates, it can drive the second connecting shaft 79 to rotate through the transmission chain 711. The second linkage shaft 79 is connected to the first linkage rod 710, which drives the first linkage rod 710 to rotate, thereby driving the meshing wheel 712 to rotate around the center position of the gear plate 78. In addition, since the meshing wheel 712 and the gear plate 78 mesh with each other, during the rotation around it, the meshing teeth 712 drive themselves to rotate (rotating around the connection point with the first connecting rod 710, that is, its own center).

[0084] As the meshing wheel 712 rotates around the center of the toothed plate 78, it gradually moves towards the fixed jaw plate 31 along the arc direction and then moves away. Since the inner wall of the moving jaw plate 32 abuts against the side of the meshing wheel 712 away from the toothed plate 78, the moving jaw plate 32 is also driven to gradually approach the fixed jaw plate 31 to crush the sand and gravel during the movement of the meshing wheel 712.

[0085] The reset process of the linkage shaft column 72 corresponds to the meshing wheel 712 rotating and resetting to its initial position around the center of the toothed plate 78. During this process, the meshing wheel 712 gradually approaches the fixed jaw plate 31 and then moves away from it, while the moving jaw plate 32 gradually approaches the fixed jaw plate 31 to crush the sand and gravel, thus completing another crushing action. In other words, each rotation and reset of the linkage shaft column 72 corresponds to two compression crushing actions completed within the pressure crusher 3. If two actuating protrusions 74 are provided, the control roller 21 rotates once, causing the linkage shaft column 72 to rotate and reset twice each, corresponding to four compression crushing actions completed within the pressure crusher 3. Correspondingly, each rotation of the control roller 21 causes the belt conveyor 2 to transport a certain distance forward, and a certain quantity of sand and gravel enters the pressure crusher 3, completing four compression crushing actions. This controls the number of crushing actions performed on a certain quantity of sand and gravel.

[0086] In order to cooperate with the rotation process of the aforementioned meshing teeth 712 to achieve the vibration screening of the moving jaw plate 32, so that some sand particles located in the upper part that cannot be discharged can be discharged, the present invention also makes the following design: the inner sidewall of the moving jaw plate 32 is provided with a corrugated section 713, the groove of the corrugated section 713 is larger than the width of the upper teeth of the meshing wheel 712, and the upper teeth of the meshing wheel 712 abut against the corrugated section 713.

[0087] During the rotation of the meshing wheel 712, its teeth move relative to each other on the corrugated section 713. The teeth are supported at different positions on the uneven corrugated section 713, causing the position of the moving jaw plate 32 relative to the meshing wheel 712 to fluctuate during the rotation of the meshing wheel 712. Therefore, a shaking phenomenon can be exhibited during the process of gradually squeezing and crushing or gradually moving away from the moving jaw plate 32. The vibration process enables the fine sand particles to be screened and fed through the crushing process. In addition to vibration, the lateral shaking during the crushing process can also alleviate the wear caused by the one-time crushing of sand particles on the moving jaw plate 32. That is to say, during the crushing process, the fluctuation of the moving jaw plate 32 may return a small distance when squeezing the sand and gravel. The slowing down of a small stage in the squeezing process, combined with the vibration, not only ensures the squeezing effect and feeding, but also protects the structure.

[0088] II. The structure of the linkage between the feeding hopper 1 and the belt conveyor 2 is as follows:

[0089] like Figure 1 and Figure 3 As shown, the first linkage 6 includes a connecting shaft 61 connected to the control roller 21 and a second linkage rod 62 disposed at both ends of the connecting shaft 61. The connecting shaft 61 is connected to the control roller 21 located at the feeding end. The connecting shaft 61 is arranged along the length direction of the control roller 21 and is close to the side of the control roller 21. A mounting seat 63 is provided on the side of the control roller 21. A main control rod 64 is rotatably connected to the mounting seat 63. The end of the connecting shaft 61 is rotatably connected to the side of the main control rod 64.

[0090] A third linkage rod 65 is rotatably connected to the main control rod 64 near the connecting shaft rod 61. A movable shaft rod 66 is hinged to the side of the third linkage rod 65. A positioning cylinder seat 67 is provided around the movable shaft rod 66. The movable shaft rod 66 is movably disposed inside the positioning cylinder seat 67. A connecting ring 68 is provided outside the movable shaft rod 66. A connecting spring 69 is provided between the connecting ring 68 and the positioning cylinder seat 67. One end of the connecting spring 69 is connected to the connecting ring 68, and the other end is connected to the positioning cylinder seat 67.

[0091] The rotation of the control roller 21 can drive the connecting shaft 61 to rotate, thereby driving the main control rod 64 to rotate gradually away from or towards the control roller 21 through the second linkage rod 62. Under the rotation of the main control rod 64, the movable shaft 66 is driven to move within the positioning cylinder seat 67 through the third linkage rod 65, that is, the movable shaft 66 is driven to translate.

[0092] To ensure smooth rotation, the second linkage 62 can be configured as a telescopic rod structure.

[0093] The feeding hopper 1 in this invention has two embodiments, wherein the first embodiment is:

[0094] like Figure 1 , Figure 2 and Figure 11 As shown, the inner cavity of the feeding hopper 1 is inverted cone-shaped, and a material control hole 9 is formed at the bottom. The size of the material control hole 9 is the smallest to avoid excessive sand and gravel accumulating at the material control hole 9 and becoming uncontrollable.

[0095] The material control assembly 4 includes a material control plate 41 disposed in the feeding hopper 1 and a flat groove 42 disposed in the feeding hopper 1. The material control plate 41 has at least a partial opening for a feed inlet 43, and the size of the feed inlet 43 is the same as the size of the material control hole 9.

[0096] The material control plate 41 is connected to the end of the movable shaft 66. The main control rod 64 rotates under the drive of the control roller 21, and drives the movable shaft 66 to move in the positioning cylinder seat 67 through the third linkage rod 65, which in turn drives the material control plate 41 to move in the plane groove 42, so that the feed port 43 gradually moves to coincide with the material control hole 9 (upper and lower position coincides).

[0097] The translation of the feed inlet 43 involves a process. The point at which the feed inlet 43 first coincides with the control hole 9 corresponds to the point at which the main control rod 64 rotates at least a certain angle. The point at which the feed inlet 43 completely coincides with the control hole 9 corresponds to the point at which the main control rod 64 rotates to its maximum angle.

[0098] After the main control rod 64 rotates to a certain angle, the feed port 43 gradually overlaps with the control hole 9 (there is an overlap). At the beginning, the feed channel 5 is still sealed during the movement of the main control rod 64.

[0099] One rotation of the control roller 21 is considered as one cycle. In a single cycle, the control roller 21 rotates half a turn, causing the main control rod 64 to rotate to its maximum angle. The control plate 41 moves from the leftmost position to the control hole 9. After another half turn, the control plate 41 resets. Within one cycle, the initial and final time periods are the times when the feed inlet 43 and the feed hole 9 do not interfere with each other. In other words, there is a period of no material feeding within each cycle. Between adjacent cycles, the main state of intermittent material feeding is maintained, which helps to ensure that the amount of sand and gravel entering the subsequent compression crusher 3 within the current cycle is within a certain range.

[0100] The second embodiment is as follows:

[0101] like Figure 3 , Figure 4 and Figure 12 As shown, the inner cavity of the feeding hopper 1 is funnel-shaped, and a control hole 9 is formed in the middle. The size of the control hole 9 is the smallest to avoid excessive sand and gravel accumulating at the control hole 9 and becoming uncontrollable.

[0102] The second embodiment of the material control component 4 is as follows: The material control component 4 includes a conical material control column 44 and a sealing column 45 disposed on the conical material control column 44. The conical material control column 44 fits into part of the inner wall of the lower part of the upper hopper 1, and the size of the sealing column 45 is consistent with the size of the material control hole 9.

[0103] Unlike the first embodiment, the upward movement of the cone-shaped control column 45 can seal the control hole 9, while the downward movement can allow some of the sand and gravel to be discharged.

[0104] The conical control column 44 is connected to the end of the movable shaft 66. The main control rod 64 rotates under the drive of the control roller 21, and drives the movable shaft 66 to move horizontally within the positioning cylinder seat 67 through the third linkage rod 65, thereby causing the conical control column 44 to move downward, so that the control hole 9 is gradually opened.

[0105] In the above embodiments, the opening of the material control hole 9 also involves a process. The time when the sealing column 45 moves down to the lowest position corresponds to the time when the main control rod 64 rotates at its maximum angle. The time when the conical material control column 44 is completely in contact with the inner wall of the feeding hopper 1 corresponds to the time when the main control rod 64 rotates at its maximum angle.

[0106] After the main control rod 64 rotates to a certain angle, the sealing column 45 completely disengages from the material control hole 9, causing the material control hole 9 to be gradually opened, the feeding channel 5 to gradually increase, and the material feeding is completed.

[0107] One rotation of the control roller 21 constitutes one cycle. In a single cycle, half a rotation of the control roller 21 causes the main control rod 64 to rotate to its maximum angle, and the conical control column 44 moves down to its bottom position. After another half rotation, the conical control column 44 returns to its original position. Within one cycle, the initial and final time periods are the time when the sealing column 45 is blocked in the control hole 9. In other words, there is a period of time during each cycle when no material is fed, thus achieving intermittent feeding. This ensures that the amount of sand and gravel entering the subsequent compression crusher 3 within the current cycle is within a certain range.

[0108] In addition to the above functions, the cone-shaped control column 44 can squeeze and crush the sand and gravel between the cone-shaped control column 44 and the feed channel 5 during the resetting process, so that there are two crushing processes in the whole process, which further avoids the accumulation of large-sized sand and gravel at the pressure crusher 3.

[0109] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. An environmentally friendly sand making system for mining, characterized in that, have: A feeding hopper (1) is provided with a material control component (4). The material control component (4) is sealed in the feeding channel (5) inside the feeding hopper (1). The material control component (4) opens and closes periodically to control the step-by-step feeding of sand and gravel in the feeding hopper (1). After the material control component (4) performs the opening action for at least a period of time, the feeding channel (5) gradually tends to open. The belt conveyor (2) has its feed end facing the discharge end of the feed hopper (1). The belt conveyor (2) is equipped with partitions (8) at equal intervals. The belt conveyor (2) is supported by control rollers (21) at both ends. The pressure crusher (3) has its feed inlet facing the discharge end of the belt conveyor (2). The pressure crusher (3) is equipped with a fixed jaw plate (31) and a movable jaw plate (32). The movable jaw plate (32) reciprocates to crush the sand and gravel between the fixed jaw plate (31) and the movable jaw plate (32). The feeding action of the hopper (1), the conveying action of the belt conveyor (2), and the crushing action of the crusher (3) are carried out in a coordinated manner at the same time, with the belt conveyor (2) serving as the main driving source. A first linkage (6) is provided on the side of the control roller (21) located at the feeding end, and a second linkage (7) is provided near the control roller (21) located at the unloading end. The first linkage (7) is movably connected to the material control assembly (4), and the second linkage (7) is movably connected to the moving jaw plate (32). The control roller (21) rotates to perform the conveying action of the belt conveyor (2), and drives the material control assembly (4) to perform opening and closing actions through the first linkage (6), and drives the moving jaw plate (32) to reciprocate through the second linkage (7).

2. The environmentally friendly sand making system for mining according to claim 1, characterized in that, A centrifugal groove (22) is provided in the control roller (21) located at the feeding end. The centrifugal groove (22) is arranged along the length direction of the control roller (21), and the center position of the centrifugal groove (22) is offset from the central axis position of the control roller (21). The second linkage component (7) includes a bearing seat (71) located on the side of the control roller (21) at the feeding end, and a linkage shaft column (72) located in the bearing seat (71); The linkage shaft (72) is connected to the bearing seat (71) via a torsion spring (73), and the center position of the linkage shaft (72) coincides with the center axis position of the control roller (21).

3. The environmentally friendly sand making system for mining according to claim 2, characterized in that, The inner wall of the centrifugal groove (22) is provided with at least two actuating protrusions (74), and the outer periphery of the linkage shaft column (72) is provided with a follower protrusion (75); The combined length of the follower protrusion (75) and the actuating protrusion (74) is less than the maximum distance between the centrifugal groove (22) and the linkage shaft column (72).

4. The environmentally friendly sand making system for mining according to claim 3, characterized in that, The first linkage shaft (76) is connected to the shaft end of the linkage column (72); The pressure crusher (3) is provided with a drive chamber (33), the movable jaw plate (32) is rotatably installed at the opening of the drive chamber (33), the drive chamber (33) is provided with a connecting plate (77), the connecting plate (77) is connected with a toothed plate (78), the toothed plate (78) is rotatably provided with a second linkage shaft (79) corresponding to the center position, and the second linkage shaft (79) is connected with a first linkage rod (710); A transmission chain (711) is provided between the first linkage shaft (76) and the second linkage shaft (79), and the transmission chain (711) meshes with the first linkage shaft (76) and the second linkage shaft (79).

5. The environmentally friendly sand making system for mining according to claim 4, characterized in that, A meshing wheel (712) is engaged on the gear plate (78), and the end of the first linkage rod (710) is rotatably disposed at the center position of the meshing wheel (712); The inner wall of the moving jaw plate (32) abuts against the side of the meshing wheel (712) away from the toothed plate (78); The inner wall of the moving jaw plate (32) is provided with a corrugated section (713), the groove of the corrugated section (713) is larger than the width of the teeth on the meshing wheel (712), and the teeth on the meshing wheel (712) abut against the corrugated section (713).

6. The environmentally friendly sand making system for mining according to claim 1, characterized in that, The first linkage (6) includes a connecting shaft (61) connected to the control roller (21) and a second linkage (62) disposed at both ends of the connecting shaft (61); The connecting shaft (61) is connected to the control roller (21) located at the feeding end. The connecting shaft (61) is arranged along the length direction of the control roller (21) and the connecting shaft (61) is close to the side of the control roller (21). The side of the control roller (21) is provided with a mounting seat (63). A main control rod (64) is rotatably connected to the mounting seat (63). The end of the connecting shaft (61) is rotatably connected to the side of the main control rod (64).

7. The environmentally friendly sand making system for mining according to claim 6, characterized in that, A third linkage rod (65) is rotatably connected to the main control rod (64) near the connecting shaft rod (61). A movable shaft rod (66) is hinged to the side of the third linkage rod rod (65). A positioning cylinder seat (67) is provided around the movable shaft rod (66). The movable shaft rod (66) is movably disposed in the positioning cylinder seat (67). A connecting ring (68) is provided outside the movable shaft (66), and a connecting spring (69) is provided between the connecting ring (68) and the positioning cylinder seat (67). One end of the connecting spring (69) is connected to the connecting ring (68), and the other end is connected to the positioning cylinder seat (67).

8. The environmentally friendly sand making system for mining according to claim 7, characterized in that, The inner cavity of the feeding hopper (1) is inverted cone-shaped, and a material control hole (9) is formed at the bottom. The material control assembly (4) includes a material control plate (41) disposed in the feeding hopper (1) and a planar groove (42) disposed in the feeding hopper (1). The material control plate (41) has at least a partial opening for a feed inlet (43), and the size of the feed inlet (43) is consistent with the size of the material control hole (9).

9. The environmentally friendly sand making system for mining according to claim 8, characterized in that, The point at which the feed inlet (43) begins to coincide with the control hole (9) corresponds to the point at which the main control rod (64) rotates at least a certain angle. The point at which the feed inlet (43) completely coincides with the control hole (9) corresponds to the point at which the main control rod (64) rotates to its maximum angle.

10. The environmentally friendly sand making system for mining according to claim 7, characterized in that, The inner cavity of the feeding hopper (1) is funnel-shaped, and a material control hole (9) is formed in the middle position; The material control assembly (4) includes a conical material control column (44) and a sealing column (45) disposed on the conical material control column (44). The conical material control column (45) fits into part of the inner wall of the lower part of the upper hopper (1). The size of the sealing column (45) is consistent with the size of the material control hole (9). The time when the sealing column (45) moves to the lowest position corresponds to the time when the main control rod (64) rotates at its maximum angle, and the time when the conical control column (44) is completely in contact with the inner wall of the feeding hopper (1) corresponds to the time when the main control rod (64) rotates at its maximum angle.

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