Grinding device for producing roadbed filler fine aggregate by using tailings and use method of grinding device

Abstract

The invention relates to the technical field of tailing treatment, in particular to a grinding device for producing roadbed filler fine aggregate through tailings and a using method of the grinding device. A fixed filing plate is mounted in the grinding box, and a lifting filing plate slidably connected with the fixed filing plate is slidably mounted in the grinding box; the fixed filing board and the lifting filing board are obliquely arranged, and a plurality of groups of discharging holes are formed between the fixed filing board and the lifting filing board; a filing block matched with the fixed filing plate and the lifting filing plate is arranged in the grinding box; a grinding mechanism is arranged in the grinding box and can drive the filing block to move in the grinding box; the matching state between the file block and the fixed file board as well as the lifting file board is changed; a dredging mechanism is arranged in the grinding box and can drive the lifting filing plate to ascend or descend in the action process of the grinding mechanism. And when the grinding mechanism is started, only part of tailings below the filing block are ground, so that the overall starting load of the device is relatively small, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of tailings treatment, in particular to a grinding device for producing roadbed filler fine aggregate by utilizing tailings and a use method thereof. Background Art

[0002] The large amount of tailings not only occupies a lot of land resources, but also may pollute the environment. Using tailings to produce roadbed fine aggregate can effectively reduce the storage of tailings, avoid environmental pollution, and promote environmental protection. Using tailings as roadbed fine aggregate can reduce engineering costs. Tailings themselves are industrial wastes. Using these wastes can save the cost of purchasing other materials, thereby reducing engineering costs.

[0003] However, tailings cannot be used directly as roadbed fine aggregates. They need to go through a series of processes before they can be used, such as crushing, cleaning, and grinding. The crushing process can break large tailings into relatively small tailings that are easy to clean and grind. The grinding process is to process the tailings of different sizes formed in the crushing process into tailings particles that are roughly in line with the size used. Common grinding devices include ductile iron mills, crushers, etc.

[0004] Since the tailings blocks processed by the crusher will become tailings powder, which is not suitable for fine aggregate of roadbed, spheroidal graphite mill is often used for grinding. In the ball mill, the rotation of the barrel drives the hardness and mass of the spheroidal graphite in the barrel to move irregularly, thereby grinding the tailings blocks in the barrel. Each time grinding is performed, a large amount of tailings blocks need to be loaded into the barrel, and then started and ground. After loading a large amount of tailings blocks, the overall load of the device will be very large, which makes the startup load of the device very high. As time goes by, the failure rate of the device will increase, and the service life arc of the device will be reduced. Summary of the invention

[0005] The object of the present invention is to provide a grinding device for producing roadbed filler fine aggregate using tailings and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A grinding device for producing fine aggregate for roadbed filler using tailings, comprising a grinding box; A feeding channel is installed on the grinding box, and a hopper is installed below the grinding box; A fixed file plate is installed in the grinding box, and a lifting file plate slidably connected to the fixed file plate is slidably installed in the grinding box; the fixed file plate and the lifting file plate are arranged obliquely, and a plurality of groups of discharge holes are arranged between the fixed file plate and the lifting file plate; a file block cooperating with the fixed file plate and the lifting file plate is arranged in the grinding box; The grinding box is provided with a grinding mechanism, and the grinding mechanism can drive the file block to move in the grinding box, so as to change the matching state between the file block and the fixed file plate and the lifting file plate; A dredging mechanism is arranged in the grinding box, and the dredging mechanism can drive the lifting file plate to rise or fall during the operation of the grinding mechanism.

[0007] As a further solution of the present invention: the discharge hole is composed of a first hole opened on the fixed file plate and a second hole opened on the lifting file plate.

[0008] As a further solution of the present invention: the grinding mechanism includes a cylinder installed on the grinding box, and a push rod is slidably installed in the cylinder; a sliding groove is provided on the file block, and a first sliding block is installed on the push rod and is slidably engaged with the sliding groove; an engaging groove is provided on the grinding box, and a protruding column is installed on the file block and is slidably engaged with the engaging groove.

[0009] As a further solution of the present invention: the engaging groove includes an inclined groove, a horizontal groove, and a vertical groove, and both ends of the inclined groove are respectively connected to the horizontal groove and one end of the vertical groove, and the other end of the horizontal groove is connected to the other end of the vertical groove.

[0010] As a further solution of the present invention: the grinding mechanism also includes a first telescopic sleeve and a second telescopic column installed on the file block; a horizontal guide rod and an inclined guide rod are installed on the grinding box; a second slider is slidably engaged on the horizontal guide rod, and the second slider is equipped with the first telescopic column slidably engaged with the first telescopic sleeve, a first spring is arranged in the first telescopic sleeve, and the two ends of the first spring respectively contact with the first telescopic column and the first telescopic sleeve; an inclined slider is slidably engaged on the inclined guide rod, and the inclined slider is equipped with the second telescopic sleeve slidably engaged with the second telescopic column, a second spring is wrapped around the second telescopic column, and the two ends of the second spring respectively contact with the file block and the second telescopic column.

[0011] As a further solution of the present invention: the inclination angle of the inclined guide rod is greater than the inclination angles of the fixed file plate and the lifting file plate.

[0012] As a further solution of the present invention: the lifting mechanism includes a plurality of groups of arc-shaped protrusions installed on the lifting file plate, and the arc-shaped protrusions are aligned with the horizontal notches.

[0013] As a further solution of the present invention: the surfaces of the file block that cooperate with the fixed file plate and the lifting file plate are inclined grinding surfaces, and the part of the grinding surface close to the feed channel is inclined, and the inclination angle is greater than the inclination angle of the grinding surface.

[0014] A method for using the grinding device for producing roadbed filler fine aggregate using tailings as described above comprises the following steps: The first step: fix the feed channel to the discharge port of the front device (crushing device, cleaning and impurity removal device) for tailings processing; the processed tailings will enter the grinding box through the feed channel and accumulate on the fixed file plate and the lifting file plate; Step 2: Start the grinding mechanism; the grinding mechanism will drive the file block to move, and during the movement, the file block will cooperate with the fixed file plate and the lifting file plate to grind the tailings; the tailings will become smaller in size after grinding, so that they can be discharged from the discharge pores and held by the hopper; Step 3: The lifting mechanism will drive the lifting file plate to rise or fall during the operation of the grinding mechanism to remove the tailings that block the discharge pores; Step 4: Remove the ground tailings from the hopper.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the grinding mechanism will drive the file block to move in the grinding box, and during the movement, the file block will cooperate with the fixed file plate and the lifting file plate, that is, the tailings block will be squeezed by the file block, and the tailings block will be driven to slide on the fixed file plate and the lifting file plate. During the sliding process, the tailings block will be squeezed and worn into relatively small tailings particles; and during the displacement of the file block, the flow of the tailings blocks in the grinding box will be accelerated to facilitate the tailings particles of the required size that were originally mixed in the tailings blocks to enter the hopper through the discharge pores, thereby improving the grinding efficiency. And because the size of the file block is much smaller than that of the fixed file plate and the lifting file plate, the effective grinding area of ​​the device unit is increased, thereby improving the grinding efficiency; because when the grinding mechanism is started, only part of the tailings below the file block will be ground, so the overall starting load of the device is relatively small, thereby extending the service life of the device and reducing the failure rate of the device; the dredging mechanism will drive the lifting file plate to rise to destroy the integrity of the discharge pores, so that the tailings particles blocked in the discharge pores fall off and enter the hopper, thereby avoiding blockage of the discharge pores, thereby improving the discharge efficiency of the device, and also improving the grinding efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of an embodiment of a grinding device for producing fine aggregate for roadbed filler using tailings.

[0017] Figure 2A schematic structural diagram of another perspective of an embodiment of a grinding device for producing fine aggregate for roadbed filler using tailings.

[0018] Figure 3 for Figure 1 Schematic diagram of the structure from a cross-sectional perspective.

[0019] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle.

[0020] Figure 5 for Figure 3 Schematic diagram of the structure at B in the figure.

[0021] Figure 6 The present invention is a schematic structural diagram of a file block, a fixed file plate and a lifting file plate in one embodiment of a grinding device for producing fine aggregate for roadbed filler using tailings.

[0022] Figure 7 The present invention is a schematic diagram of the structure of the interlocking groove in one embodiment of a grinding device for producing fine aggregate for roadbed filler using tailings.

[0023] Figure 8 The present invention is a schematic diagram of the structure of a file block in one embodiment of a grinding device for producing fine aggregate for roadbed filler using tailings.

[0024] In the figure: 1, grinding box; 101, feeding channel; 102, hopper; 103, horizontal guide rod; 104, inclined guide rod; 2. Cylinder; 201. Push rod; 202. First slider; 3. Fixed file plate; 301. First aperture; 4. lifting file plate; 401. second aperture; 402. arc-shaped protrusion; 5. file block; 501. slide groove; 502. raised column; 503. first telescopic sleeve; 504. second telescopic column; 505. grinding surface; 6. First spring; 7. Second spring; 8. Second sliding block; 801. First telescopic column; 9. tilting slider; 901. second telescopic sleeve; 10. fitting groove; 1001. inclined notch; 1002. horizontal notch; 1003. vertical notch; 11. Discharge pores. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0026] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0027] See also Figure 1 to Figure 8 , In an embodiment of the present invention, a grinding device for producing fine aggregate of roadbed filler using tailings comprises a grinding box 1; A feed channel 101 is installed on the grinding box 1, and a hopper 102 is installed below the grinding box 1; A fixed file plate 3 is installed in the grinding box 1, and a lifting file plate 4 slidably connected to the fixed file plate 3 is slidably installed in the grinding box 1; the fixed file plate 3 and the lifting file plate 4 are arranged obliquely, and a plurality of groups of discharge holes 11 are arranged between the fixed file plate 3 and the lifting file plate 4; a file block 5 cooperating with the fixed file plate 3 and the lifting file plate 4 is arranged in the grinding box 1; The grinding box 1 is provided with a grinding mechanism, which can drive the file block 5 to move in the grinding box 1, so as to change the matching state between the file block 5 and the fixed file plate 3 and the lifting file plate 4; The grinding box 1 is provided with a dredging mechanism, which can drive the lifting file plate 4 to rise or fall during the operation of the grinding mechanism.

[0028] Taking the embodiment combining all the features recorded in the present application as an example, when in use, the feed channel 101 is fixedly connected to the discharge port of the pre-device (crushing device, cleaning device) for tailings treatment; the relatively large tailings blocks that have undergone pre-treatment will enter the grinding box 1 through the feed channel 101 and accumulate on the fixed file plate 3 and the lifting file plate 4; the feed channel 101 is arranged at an angle, and as the tailings blocks in the grinding box 1 are consumed, new tailings blocks will be replenished into the grinding box 1 in real time.

[0029] When the grinding mechanism is started, the grinding mechanism will drive the file block 5 to move in the grinding box 1. During the movement, the file block 5 will cooperate with the fixed file plate 3 and the lifting file plate 4, that is, the tailings block will be squeezed by the file block 5, and the tailings block will be driven to slide on the fixed file plate 3 and the lifting file plate 4. During the sliding process, the tailings block will be squeezed and worn into relatively small tailings particles; and during the displacement of the file block 5, the flow of the tailings block in the grinding box 1 will be accelerated to facilitate the tailings particles that originally mixed in the tailings block and meet the requirements to enter the hopper 102 through the discharge pores 11, thereby improving the grinding efficiency. And because the size of the file block 5 is much smaller than that of the fixed file plate 3 and the lifting file plate 4, the effective grinding area of ​​the device unit is increased, thereby improving the grinding efficiency.

[0030] Since the grinding mechanism only grinds part of the tailings below the file block 5 when it is started, the overall starting load of the device is relatively small, thereby extending the service life of the device and reducing the failure rate of the device.

[0031] After the grinding mechanism drives the file block 5 to cooperate with the fixed file plate 3 and the lifting file plate 4, it will drive the file block 5 to disengage from the fixed file plate 3 and the lifting file plate 4 to reset the file block 5, thereby grinding another part of the tailings block. During the resetting process, the grinding mechanism will drive the dredging mechanism to operate, and the dredging mechanism will drive the lifting file plate 4 to rise to destroy the integrity of the discharge pore 11, so that the tailings particles blocked in the discharge pore 11 fall off and enter the hopper 102, so as to avoid clogging of the discharge pore 11, thereby improving the discharge efficiency of the device, and also improving the grinding efficiency of the device.

[0032] In another embodiment of the present invention, the discharge aperture 11 is composed of a first aperture 301 provided on the fixed file plate 3 and a second aperture 401 provided on the lifting file plate 4 .

[0033] Taking the embodiment combining all the features recorded in the present application as an example, when in use, when the fixed file plate 3 and the lifting file plate 4 are located on the same inclined plane, the first pore 301 and the second pore 401 can interfere with each other and cooperate to form a discharge pore 11; during the movement of the file block 5, it will cooperate with the lifting file plate 4 and the fixed file plate 3 along a trajectory with the same inclination angle as the lifting file plate 4 and the fixed file plate 3. During the cooperation process, the tailings blocks will be ground into particles, so that they can be discharged from the discharge pore 11.

[0034] As the grinding proceeds, tailing particles slightly larger than the size of the discharge pore 11 will be squeezed into the discharge pore 11, causing the discharge pore 11 to be blocked, thereby reducing the discharge rate and grinding efficiency.

[0035] The dredging mechanism will drive the lifting file plate 4 to rise and fall to destroy the integrity of the discharge pore 11, even if the first pore 301 and the second pore 401 are misaligned and separated, so that the tailings particles blocked in the discharge pore 11 fall off and enter the hopper 102, thereby avoiding blockage of the discharge pore 11, thereby improving the discharge efficiency of the device, and also improving the grinding efficiency of the device.

[0036] According to another embodiment of the present invention, the grinding mechanism comprises a cylinder 2 installed on the grinding box 1, a push rod 201 is slidably installed in the cylinder 2; a slide groove 501 is provided on the file block 5, a first slider 202 slidably engaged with the slide groove 501 is installed on the push rod 201; an engaging groove 10 is provided on the grinding box 1, a raised column 502 slidably engaged with the engaging groove 10 is installed on the file block 5.

[0037] Taking the embodiment combining all the features recorded in the present application as an example, when in use, the cylinder 2 will drive the push rod 201 to extend outward and retract inward when it is in motion; during the process of the push rod 201 extending outward, the push rod 201 will move through the first slider 202 to drive the file block 5 to move, thereby driving the protruding column 502 to slide and cooperate with the interlocking groove 10, so that the file block 5 moves upward at an angle, and the inclination angle is consistent with the inclination angle of the fixed file plate 3 and the lifting file plate 4. During the process of the file block 5 tilting and rising, the distance between the file block 5 and the fixed file plate 3 and the lifting file plate 4 is the smallest, and during the process of the file block 5 tilting and rising, part of the tailings blocks will be driven to move synchronously on the fixed file plate 3 and the lifting file plate 4, so that they can be extruded and ground along with the tailings blocks; and during this process, the first slider 202 will slide in the slide groove 501.

[0038] After the push rod 201 drives the file block 5 to tilt upward to the maximum stroke, the cylinder 2 will drive the push rod 201 to retract inward. At this time, the push rod 201 will drive the file block 5 to move, and make the raised column 502 slide with the interlocking groove 10, so that the file block 5 can move to the initial position and complete the reset.

[0039] During the displacement of the file block 5, the flow of the tailings block in the grinding box 1 is accelerated, so that the tailings particles originally mixed in the tailings block and meeting the requirements of size can enter the hopper 102 through the discharge pores 11, thereby improving the grinding efficiency. And because the size of the file block 5 is much smaller than that of the fixed file plate 3 and the lifting file plate 4, the effective grinding area of ​​the device unit is increased, thereby improving the grinding efficiency.

[0040] Since the grinding mechanism only grinds part of the tailings below the file block 5 when it is started, the overall starting load of the device is relatively small, thereby extending the service life of the device and reducing the failure rate of the device.

[0041] In another embodiment of the present invention, the interlocking groove 10 includes an inclined groove 1001 and a horizontal groove 1002, as well as a vertical groove 1003, and both ends of the inclined groove 1001 are respectively connected to the horizontal groove 1002 and one end of the vertical groove 1003, and the other end of the horizontal groove 1002 is connected to the other end of the vertical groove 1003.

[0042] Taking the embodiment combining all the features described in the present application as an example, when in use, when the push rod 201 extends outward, it will drive the file block 5 to move, so that the raised column 502 slides in the inclined slot 1001. The inclination angle of the inclined slot 1001 is the same as the inclination angle of the fixed file plate 3 and the lifting file plate 4. Therefore, when the raised column 502 slides from the lower end point of the inclined slot 1001 (the connecting point of the inclined slot 1001 and the vertical slot 1003) to the upper end point (the connecting point of the inclined slot 1001 and the horizontal slot 1002), the file block 5 will move upward in a tilted manner parallel to the fixed file plate 3 and the lifting file plate 4.

[0043] When the top rod 201 contracts inward, it will drive the file block 5 to reset, so that the raised column 502 slides from the upper end point of the inclined slot 1001 to the connection point between the horizontal slot 1002 and the vertical slot 1003 (slides in the horizontal slot 1002). In this process, the file block 5 is horizontally displaced to just above the initial position, and then the raised column 502 slides in the vertical slot 1003 to the lower end point of the inclined slot 1001. In this process, the file block 5 completes the reset, and when the raised column 502 slides in the vertical slot 1003, the file block 5 squeezes, crushes and clamps the tailings block below to facilitate subsequent grinding, thereby improving the grinding efficiency.

[0044] According to another embodiment of the present invention, the grinding mechanism also includes a first telescopic sleeve 503 and a second telescopic column 504 installed on the file block 5; a horizontal guide rod 103 and an inclined guide rod 104 are installed on the grinding box 1; a second slider 8 is slidably engaged with the horizontal guide rod 103, and a first telescopic column 801 is installed on the second slider 8 and slidably engaged with the first telescopic sleeve 503, a first spring 6 is arranged in the first telescopic sleeve 503, and the two ends of the first spring 6 respectively conflict with the first telescopic column 801 and the first telescopic sleeve 503; an inclined slider 9 is slidably engaged with the inclined guide rod 104, and a second telescopic sleeve 901 is installed on the inclined slider 9 and slidably engaged with the second telescopic column 504, a second spring 7 is wrapped around the second telescopic column 504, and the two ends of the second spring 7 respectively conflict with the file block 5 and the second telescopic column 504.

[0045] Taking the embodiment combining all the features described in the present application as an example, when in use, the elastic force of the first spring 6 is perpendicular to the file block 5 and causes the file block 5 to tend to move downward, and the elastic force of the second spring 7 is opposite to the direction of the first spring 6 and causes the file block 5 to tend to move upward.

[0046] When the raised column 502 is located at the lower end point of the inclined slot 1001, the sum of the elastic force of the first spring 6 and the gravity of the file block 5 is greater than the elastic force of the second spring 7. Therefore, when the top rod 201 extends outward, the raised column 502 can slide from the lower end point to the upper end point in the inclined slot 1001, and the file block 5 will tilt upward, and the first telescopic column 801 will slide inward in the first telescopic sleeve 503, thereby compressing the first spring 6, and the second slider 8 will slide horizontally on the horizontal guide rod 103; and the inclined slider 9 will slide upward at the lowest point on the inclined guide rod 104 with the displacement of the file block 5, and the distance between the file block 5 and the inclined slider 9 will continue to increase, so that the second telescopic column 504 will When sliding inward in the second telescopic sleeve 901, the second spring 7 will be compressed; when the raised column 502 reaches the upper end point of the inclined slot 1001, the elastic force of the second spring 7 will be greater than the sum of the elastic force of the first spring 6 and the gravity of the file block 5, so the raised column 502 can slide in the horizontal slot 1002; and in the process of the raised column 502 sliding in the horizontal slot 1002 toward the vertical slot 1003, the inclined slider 9 will slide downward on the inclined guide rod 104, and the distance between the inclined slider 9 and the file block 5 will gradually decrease during the sliding process, so that the second telescopic column 504 slides inward in the second telescopic sleeve 901, and the elastic force of the second spring 7 gradually decreases; while the elastic force of the first spring 6 remains at the maximum and unchanged.

[0047] When the raised column 502 enters the vertical slot 1003, the sum of the elastic force of the first spring 6 and the gravity of the file block 5 is much greater than the elastic force of the second spring 7, and the raised column 502 will slide in the vertical slot 1003 toward the lower end point of the inclined slot 1001 until it is reset; and in the sliding process, the elastic force of the first spring 6 and the gravity of the file block 5 will drive the file block 5 to squeeze and impact the tailings block below, and clamp it to facilitate subsequent grinding.

[0048] During the displacement of the file block 5, the flow of the tailings block in the grinding box 1 is accelerated, so that the tailings particles originally mixed in the tailings block and meeting the requirements of size can enter the hopper 102 through the discharge pores 11, thereby improving the grinding efficiency. And because the size of the file block 5 is much smaller than that of the fixed file plate 3 and the lifting file plate 4, the effective grinding area of ​​the device unit is increased, thereby improving the grinding efficiency.

[0049] Since the grinding mechanism only grinds part of the tailings below the file block 5 when it is started, the overall starting load of the device is relatively small, thereby extending the service life of the device and reducing the failure rate of the device.

[0050] In another embodiment of the present invention, the inclined angle of the inclined guide rod 104 is greater than the inclined angles of the fixed file plate 3 and the lifting file plate 4 .

[0051] Taking the embodiment combining all the features described in the present application as an example, when in use, since the inclination angle of the inclined guide rod 104 is greater than the inclination angle of the fixed file plate 3 and the lifting file plate 4, that is, greater than the inclination angle of the inclined slot 1001, the rising or falling distance of the inclined slider 9 per unit time is greater than the rising or falling distance of the file block 5, so that the distance between the inclined slider 9 and the file block 5 will increase or decrease, thereby increasing or decreasing the elastic force of the second spring 7.

[0052] In another embodiment of the present invention, the dredging mechanism includes a plurality of groups of arc-shaped protrusions 402 installed on the lifting file plate 4 , and the arc-shaped protrusions 402 are aligned with the horizontal slots 1002 .

[0053] Taking the embodiment of the combination of all the features recorded in the present application as an example, when in use, the protruding column 502 will collide with the arc-shaped protrusion 402 during the sliding process in the horizontal slot 1002, and squeeze the arc-shaped protrusion 402 to make way upward, thereby driving the lifting file plate 4 to move upward, so as to drive the second pore 401 to be misaligned with the first pore 301, so that the tailing particles blocked in the discharge pore 11 fall off; after the protruding column 502 passes over the arc-shaped protrusion 402, the lifting file plate 4 will slide downward and reset under the gravity of the lifting file plate 4, so that the first pore 301 and the second pore 401 are matched again.

[0054] The dredging mechanism will drive the lifting file plate 4 to rise to destroy the integrity of the discharge pore 11, so that the tailings particles blocked in the discharge pore 11 fall off and enter the hopper 102, thereby avoiding blockage of the discharge pore 11, thereby improving the discharge efficiency of the device and also improving the grinding efficiency of the device.

[0055] In another embodiment of the present invention, the surface of the file block 5 that cooperates with the fixed file plate 3 and the lifting file plate 4 is an inclined grinding surface 505, and the grinding surface 505 close to the feed channel 101 is inclined, and the inclination angle is greater than the inclination angle of the grinding surface 505.

[0056] Taking the embodiment combining all the features recorded in the present application as an example, when in use, the grinding surface 505 is parallel to the fixed file plate 3 and the lifting file plate 4, and the surface is relatively rough, so as to increase the grinding efficiency. The grinding surface 505 is inclined near the feed channel 101, which can increase the amount of tailings blocks entering the grinding surface 505 during the process of the file block 5 moving upward, thereby increasing the grinding efficiency.

[0057] A method for using the grinding device for producing roadbed filler fine aggregate using tailings as described above comprises the following steps: The first step: the feed channel 101 is fixedly connected to the discharge port of the front device (crushing device, cleaning and impurity removal device) for processing tailings; the processed tailings will enter the grinding box 1 through the feed channel 101 and accumulate on the fixed file plate 3 and the lifting file plate 4; Step 2: Start the grinding mechanism; the grinding mechanism will drive the file block 5 to move, and during the movement, the file block 5 will cooperate with the fixed file plate 3 and the lifting file plate 4 to grind the tailings; the tailings will become smaller in size after grinding, so that they can be discharged from the discharge pore 11 and held by the hopper 102; Step 3: The dredging mechanism will drive the lifting file plate 4 to rise or fall during the operation of the grinding mechanism to remove the tailings that block the discharge pore 11; Step 4: Remove the ground tailings in the hopper 102.

[0058] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grinding device for producing fine aggregate for roadbed filler using tailings, comprising a grinding box (1); It is characterized in that A feeding channel (101) is installed on the grinding box (1), and a hopper (102) is installed below the grinding box (1); A fixed file plate (3) is installed in the grinding box (1), and a lifting file plate (4) is slidably installed in the grinding box (1) and is slidably connected to the fixed file plate (3); the fixed file plate (3) and the lifting file plate (4) are arranged obliquely, and a plurality of groups of discharge holes (11) are arranged between the fixed file plate (3) and the lifting file plate (4); a file block (5) is arranged in the grinding box (1) and cooperates with the fixed file plate (3) and the lifting file plate (4); A grinding mechanism is provided in the grinding box (1), and the grinding mechanism can drive the file block (5) to move in the grinding box (1), so as to change the matching state between the file block (5) and the fixed file plate (3) and the lifting file plate (4); A dredging mechanism is provided in the grinding box (1), and the dredging mechanism can drive the lifting file plate (4) to rise or fall during the operation of the grinding mechanism.

2. A grinding device for producing roadbed filler fine aggregate using tailings according to claim 1, characterized in that: The material discharge pore (11) is composed of a first pore (301) provided on the fixed file plate (3) and a second pore (401) provided on the lifting file plate (4).

3. The grinding device for producing roadbed filler fine aggregate using tailings according to claim 1, characterized in that: The grinding mechanism comprises a cylinder (2) mounted on the grinding box (1), a push rod (201) being slidably mounted in the cylinder (2); a slide groove (501) is provided on the file block (5), a first sliding block (202) slidably engaged with the slide groove (501) is mounted on the push rod (201); an engaging groove (10) is provided on the grinding box (1), a raised column (502) slidably engaged with the engaging groove (10) is mounted on the file block (5).

4. A grinding device for producing roadbed filler fine aggregate using tailings according to claim 3, characterized in that: The engaging groove (10) comprises an inclined groove (1001), a horizontal groove (1002), and a vertical groove (1003), and two ends of the inclined groove (1001) are respectively connected to the horizontal groove (1002) and one end of the vertical groove (1003), and the other end of the horizontal groove (1002) is connected to the other end of the vertical groove (1003).

5. A grinding device for producing roadbed filler fine aggregate using tailings according to claim 4, characterized in that: The grinding mechanism further comprises a first telescopic sleeve (503) and a second telescopic column (504) mounted on the file block (5); a horizontal guide rod (103) and an inclined guide rod (104) are mounted on the grinding box (1); a second slider (8) is slidably engaged with the horizontal guide rod (103); a first telescopic column (801) is slidably engaged with the first telescopic sleeve (503) and mounted on the second slider (8); a first spring (6) is arranged in the first telescopic sleeve (503); two ends of the first spring (6) respectively contact the first telescopic column (801) and the first telescopic sleeve (503); an inclined slider (9) is slidably engaged with the inclined guide rod (104); a second telescopic sleeve (901) is slidably engaged with the second telescopic column (504) and mounted on the inclined slider (9); a second spring (7) is wrapped around the second telescopic column (504); two ends of the second spring (7) respectively contact the file block (5) and the second telescopic column (504).

6. A grinding device for producing roadbed filler fine aggregate using tailings according to claim 5, characterized in that: The inclination angle of the inclined guide rod (104) is greater than the inclination angles of the fixed file plate (3) and the lifting file plate (4).

7. A grinding device for producing roadbed filler fine aggregate using tailings according to claim 5, characterized in that: The lifting mechanism comprises a plurality of groups of arc-shaped protrusions (402) mounted on the lifting file plate (4), and the arc-shaped protrusions (402) are aligned with the horizontal slots (1002).

8. The grinding device for producing roadbed filler fine aggregate using tailings according to claim 1, characterized in that: The surfaces of the file block (5) that cooperate with the fixed file plate (3) and the lifting file plate (4) are inclined grinding surfaces (505), and the portion of the grinding surface (505) close to the feed channel (101) is inclined, and the inclination angle is greater than the inclination angle of the grinding surface (505).

9. A method for using the grinding device for producing roadbed filler fine aggregate using tailings as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: The first step is to fix the feed channel (101) to the discharge port of the front device (crushing device, cleaning and impurity removal device) for processing tailings; the processed tailings will enter the grinding box (1) through the feed channel (101) and accumulate on the fixed file plate (3) and the lifting file plate (4); Step 2: Start the grinding mechanism; the grinding mechanism drives the file block (5) to move, and during the movement, the file block (5) cooperates with the fixed file plate (3) and the lifting file plate (4) to grind the tailings; after the tailings are ground, the size becomes smaller, so that they can be discharged from the discharge pores (11) and received by the hopper (102); Step 3: The lifting mechanism will drive the lifting file plate (4) to rise or fall during the operation of the grinding mechanism to remove the tailings that block the discharge pores (11); Step 4: Remove the ground tailings in the hopper (102).

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