Screening equipment with anti-blocking function for coal mine treatment

Abstract

The invention relates to the technical field of coal mine screening, and discloses coal mine treatment screening equipment with an anti-blocking function, the coal mine treatment screening equipment comprises a bottom plate and mounting frames symmetrically and fixedly mounted at the top of the bottom plate, fixing plates are symmetrically and fixedly connected to the middle of the top of the bottom plate, and transverse plates are rotatably connected to the inner sides of the two fixing plates; a treatment barrel is fixedly mounted at the top of the transverse plate, a screening assembly is arranged at the top of the bottom plate, a dust collection assembly is arranged on the inner side of the mounting frame, a rotating part is rotationally mounted on one side of the treatment barrel, a feeding pipe is fixedly mounted in the rotating part, and a screening barrel is rotationally mounted on the inner side of the treatment barrel; the problems that when large coal mine materials are located on the lower layer, screening holes can be blocked, small coal mines cannot be rapidly screened only through vibration, the screening work efficiency is reduced, and after long-time work, the coal mine materials possibly block the screening holes are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine screening, in particular to a screening device for coal mine processing with an anti-blocking function. Background Art

[0002] Before processing the coal, it needs to be screened, which requires the use of a screening device. Existing screening machines often use a vibration screening method. When larger pieces of coal are located in the lower layer, they will block the screen holes. Relying solely on vibration is not convenient for quickly screening small pieces of coal, which reduces the screening efficiency. After the screening machine has been working for a long time, the coal may block the screen holes, which will also reduce the screening quality.

[0003] For example, a coal mine screening device with the announcement number CN218360595U includes a box body, a screening hopper, a horizontal plate, a collecting bin and a screen. Extension arms are welded at both ends of the inner wall of the box body, a servo motor is installed at one end of the bottom of the extension arm by screws, and a cam is connected to the power output end of the servo motor. A screening hopper is provided on the lower side of the top of the box body, and protrusions are welded at both ends of the screening hopper. One side of the protrusion is connected to a fixed arm, and one side of the bottom end of the fixed arm is connected to a rubber guide wheel through a rotating shaft, and the rubber guide wheel is located at the upper end of the cam. Extension plates are welded near the top at both ends of the screening hopper, and a spring seat is connected between the top of the extension plate and the top of the box body by screws. The double vibration mechanism can effectively improve the uniformity of vibration. However, when larger pieces of coal and mineral materials are located in the lower layer and smaller pieces of coal and mineral materials are located in the upper layer, the larger pieces of coal and mineral materials will block the screen holes. It is not convenient to quickly screen the small pieces of coal in the upper layer by vibration alone, which reduces the screening efficiency. After the screening machine has been working for a long time, the coal and mineral materials may block the screen holes, which will also reduce the screening quality.

[0004] Therefore, a screening device for coal mine processing with an anti-blocking function is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a screening equipment for coal mine processing with an anti-blocking function to solve the problem that larger pieces of coal and mineral materials will block the sieve holes when they are located in the lower layer. It is not convenient to achieve rapid screening of small pieces of coal by vibration alone, which reduces the screening work efficiency. After working for a long time, the sieve holes may be blocked by coal and mineral materials.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a screening device for coal mine processing with an anti-blocking function, comprising a bottom plate and a mounting frame symmetrically fixedly mounted on the top of the bottom plate, a fixed plate symmetrically fixedly connected to the middle of the top of the bottom plate, a cross plate rotatably connected to the inner sides of the two fixed plates, and a processing cylinder fixedly mounted on the top of the cross plate;

[0007] Also includes:

[0008] A screening assembly is provided on the top of the bottom plate, a dust collecting assembly is provided on the inner side of the mounting frame, a rotating member is rotatably mounted on one side of the processing cylinder, a feeding pipe is fixedly mounted inside the rotating member, and a screening cylinder is rotatably mounted on the inner side of the processing cylinder;

[0009] The screening assembly includes a motor 1 fixedly mounted on the inner top surface of the mounting frame on one side, the output end of the motor 1 is fixedly connected to a left reciprocating screw rod, a baffle is symmetrically fixedly connected to the outer side of the left reciprocating screw rod, a left threaded sleeve is threadedly connected to the outer side of the left reciprocating screw rod, a left top plate is fixedly connected to one side of the left threaded sleeve, and a driving wheel is fixedly connected to the outer side of the lower part of the left reciprocating screw rod;

[0010] The top of the bottom plate is rotatably connected to a side away from the motor 1, the lower outer side of the right reciprocating screw is fixedly connected to a driven wheel, a cross belt is sleeved between the driving wheel and the driven wheel, the outer side of the right reciprocating screw is threadedly connected to a right threaded sleeve, one side of the right threaded sleeve is fixedly connected to the right top plate, and the top of the bottom plate is symmetrically fixedly connected to a limit rod;

[0011] Motor 2 is fixedly installed on the other side of the processing cylinder, and the output end of motor 2 is fixedly connected to a rotating shaft through the processing cylinder. The end of the rotating shaft away from motor 2 is fixedly connected to the screening cylinder, and a turntable is fixedly connected to the outside of the rotating shaft. An arc block is fixedly connected to the outside of the turntable. An arc piece is symmetrically fixedly connected to the upper inner side of the processing cylinder, and a center rod and a side rod are slidably installed inside the arc piece on the left side.

[0012] Preferably, the mounting frame is in an inverted U shape, a discharge door is hinged on the front side of the processing cylinder, the screening cylinder is fixedly installed with the rotating part, the bottom end of the left reciprocating screw is rotatably connected to the bottom plate, and the left threaded sleeve is located between the upper and lower baffles.

[0013] By adopting the above technical solution, the motor drives the left reciprocating screw to rotate, the left reciprocating screw drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate synchronously in the opposite direction through the cross belt, so that the left top plate and the right top plate move back and forth up and down, and the movement directions of the left top plate and the right top plate are opposite.

[0014] Preferably, the limit rod on one side is slidably connected to the left top plate, and the limit rod on the other side is slidably connected to the right top plate, the rotating shaft is rotatably connected to the processing cylinder, three arc blocks are provided, the outer side of the screening cylinder is fitted with the arc sheet, and the outer side of the screening cylinder is evenly provided with sieve holes.

[0015] By adopting the above technical solution, the limiting rod limits the left top plate and the right top plate, thereby maintaining the left top plate and the right top plate in stable up and down movement.

[0016] Preferably, one end of the center rod and the side rod are fixedly connected to a trapezoidal block, the outer sides of the center rod and the side rod are sleeved with spring 1, the other ends of the center rod and the side rod are fixedly connected to a horizontal bar, the outer sides of the horizontal bar are fixedly connected with scrapers at intervals, the inner side of the horizontal bar is provided with a slide groove, the inner side of the slide groove is fixedly connected to a push rod, two side rods are provided, and the two side rods are located on both sides of the center rod, the trapezoidal block is located on the side of the arc piece on the left side close to motor 2, one end of the spring 1 is fixedly connected to the arc piece on the left side, and the other end of the spring 1 is fixedly connected to the trapezoidal block.

[0017] By adopting the above technical solution, the trapezoidal block will be squeezed to compress spring 1, and drive the side rod or the center rod to move, and the center rod or the side rod will drive the cross bar to move, so that the cross bar drives the scraper to move.

[0018] Preferably, the scraper on the outside of the center rod and the scraper on the outside of the side rod are staggered, the horizontal bar fits against the outside of the screening cylinder, a vertical groove is opened on the inside of the processing cylinder, a spring 2 is fixedly installed inside the vertical groove, a sliding rod is slidably connected to the inside of the vertical groove, and the sliding rod is fixedly connected to the spring 2.

[0019] By adopting the above technical solution, the scrapers connected to the outside of the center rod and the scrapers connected to the outside of the side rods are staggered, so that when the screening drum rotates, multiple scrapers will slide and scrape the entire surface of the screening drum to clean it.

[0020] Preferably, the end of the sliding rod away from the spring 2 is fixedly connected to a knocking block, the outer side of the sliding rod is fixedly connected to an inclined block, the push rod abuts against the inclined surface of the inclined block, the sliding rod and the inclined block are both slidably connected to the slide groove, and the knocking block fits against the outer side of the screening cylinder.

[0021] By adopting the above technical solution, the movement of the horizontal bar will drive the push rod to squeeze the inclined block, and the extrusion of the inclined block will drive the slide rod to rise, and the slide rod will drive the knocking block to rise and compress spring 2. When the arc block and the trapezoidal block are subsequently separated, the elastic force of spring 2 drives the slide rod and the knocking block to press on the surface of the screening cylinder, and the knocking block plays the role of scraping and knocking on the screening cylinder.

[0022] Preferably, the dust collecting assembly includes spring three and a collection box, the spring three is fixedly mounted on the bottom of the left top plate and the right top plate, the bottom end of the spring three is fixedly connected to the top of the bottom plate, the collection box is fixedly mounted on one side of the inner top surface of the mounting frame, and a connecting pipe is fixedly mounted on the bottom of the collection box.

[0023] By adopting the above technical solution, when the left top plate descends, it will drive the piston rod to descend inside the sleeve to extract air. Once the one-way valve is closed, the piston rod will exhaust air from the inside of the treatment cylinder through the transfer box and the extraction pipe, and the smoke and dust will enter the transfer box through the extraction pipe.

[0024] Preferably, a transfer box is fixedly installed at one end of the connecting pipe away from the collection box, a sleeve is fixedly installed at the bottom of the transfer box, the tops of the left top plate and the right top plate are fixedly connected with piston rods, the piston rods are slidably connected to the sleeves, and a filter is fixedly installed on the upper part of the interior of the sleeve.

[0025] By adopting the above technical solution, the filter screen blocks the smoke and dust. When the left top plate rises, the left top plate drives the piston rod to squeeze the air inside the sleeve, the one-way valve 2 is closed, and the smoke and dust in the transfer box is input into the collection box for storage through the connecting pipe.

[0026] Preferably, the collection box is connected to the transfer box through a connecting pipe, a one-way valve 1 is fixedly installed on the outside of the transfer box, the sleeve is connected to the transfer box, an extraction pipe is connected between the transfer box and the processing cylinder, a one-way valve 2 is fixedly installed on the outside of the extraction pipe, and a pressure relief valve is fixedly installed on the top side of the collection box.

[0027] By adopting the above technical solution, the smoke and dust generated by screening inside the processing cylinder can be exhausted when the processing cylinder is tilted and swung, thereby reducing the impact of smoke and dust when the discharge door is subsequently opened to discharge the material.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. A screening assembly is provided. When screening, the operator first opens the feeding pipe to add coal and mineral materials into the screening drum, then closes the feeding pipe and starts motor 1 and motor 2. Motor 1 drives the left reciprocating screw to rotate, and the limit rod limits the left and right top plates. The left reciprocating screw drives the driving wheel to rotate, and the driving wheel drives the driven wheel to rotate synchronously in the opposite direction through the cross belt, thereby realizing the reciprocating up and down movement of the left and right threaded sleeves, and making the left and right top plates move up and down reciprocatingly. , and the moving directions of the left top plate and the right top plate are opposite. When the left top plate drives the horizontal plate to rise, the right top plate drops to make way for the horizontal plate, realizing the reciprocating tilting and swinging of the horizontal plate, which is convenient for the tilting and swinging of the processing drum and the screening drum; the second motor will drive the rotating shaft and the screening drum to rotate, which is convenient for the rotation and screening of the screening drum. The qualified coal and mineral materials fall into the processing drum through the sieve holes and are collected. The rotating shaft drives the turntable to rotate, and the turntable drives the arc block to squeeze the inclined surface of the trapezoidal block. The trapezoidal block will compress the spring 1 when squeezed, and drive the side rod or When the center rod moves, the center rod or the side rod will drive the horizontal bar to move, and the horizontal bar will drive the scraper to move, and the scraper connected to the outside of the center rod and the scraper connected to the outside of the side rod are staggered, so that when the screening drum rotates, multiple scrapers will slide and scrape the surface of the screening drum as a whole to clean the cleaning. The movement of the horizontal bar will drive the push rod to squeeze the inclined block, and the inclined block will be squeezed to drive the sliding rod to rise, and the sliding rod drives the knocking block to rise and compress the spring two. When the subsequent arc block and the trapezoidal block are separated, the elastic force of the spring one drives the horizontal bar and the push rod to reset. At this time, the elastic force of the spring two drives the sliding rod and the knocking block to press on the surface of the screening drum, and the knocking block plays both a scraping effect and a knocking effect on the screening drum, further reducing the blockage of the screening drum holes.

[0030] 2. A dust collecting assembly is provided. Since the left top plate and the right top plate move up and down reciprocatingly, spring three assists the lifting of the left top plate and the right top plate. When the left top plate descends, it drives the piston rod to descend inside the sleeve to extract air. When the one-way valve is closed, the piston rod exhausts air from the inside of the treatment cylinder through the transfer box and the extraction pipe. The smoke enters the transfer box through the extraction pipe. The filter blocks the smoke. When the left top plate rises, the left top plate drives the piston rod to squeeze the air inside the sleeve. The one-way valve two is closed, and the smoke in the transfer box is input into the collection box for storage through the connecting pipe. The lifting of the right top plate is the same as the left top plate, thereby realizing the extraction of the smoke generated by screening inside the treatment cylinder when the treatment cylinder is tilted and swung, reducing the impact of smoke when the discharge door is opened later to discharge. An inflation device is installed on the outside of the treatment cylinder, which can maintain a constant pressure for the inflation inside the treatment cylinder without affecting the extraction of the extraction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the second three-dimensional overall structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation structure of a motor according to the present invention;

[0034] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0035] Figure 5 This is a schematic diagram of the discharge door opening of the present invention;

[0036] Figure 6 This is a schematic diagram of the cross-sectional structure of the treatment tube of the present invention;

[0037] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0038] Figure 8 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0039] Figure 9 This is an exploded schematic diagram of the turntable installation structure of the present invention;

[0040] Figure 10 For the present invention Figure 9 The enlarged structural diagram at D in the middle;

[0041] Figure 11 This is a schematic diagram of the tilt of the treatment barrel of the present invention;

[0042] Figure 12 This is a schematic diagram of the installation structure of the collection box of the present invention;

[0043] Figure 13 This is a schematic cross-sectional view of the collecting box of the present invention;

[0044] Figure 14 For the present invention Figure 13 Enlarged structural diagram at E in the middle.

[0045] In the figure: 1, bottom plate; 2, mounting frame; 3, fixing plate; 4, cross plate; 5, processing cylinder; 6, screening assembly; 61, motor 1; 62, left reciprocating screw; 63, baffle; 64, left threaded sleeve; 65, left top plate; 66, driving pulley; 67, right reciprocating screw; 68, driven pulley; 69, cross belt; 610, right threaded sleeve; 611, right top plate; 612, limit rod; 613, motor 2; 614, rotating shaft; 615, turntable; 616, arc block; 617, arc sheet; 618, center rod; 619, side rod; 620, Trapezoidal block; 621, spring one; 622, horizontal bar; 623, scraper; 624, slide; 625, push rod; 626, vertical slot; 627, spring two; 628, slide; 629, knocking block; 630, oblique block; 7, dust collecting assembly; 71, spring three; 72, collection box; 73, connecting pipe; 74, transfer box; 75, one-way valve one; 76, sleeve; 77, filter; 78, piston rod; 79, extraction pipe; 710, one-way valve two; 711, pressure relief valve; 8, rotating part; 9, feeding pipe; 10, discharge door; 11, screening cylinder. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0047] See also Figures 1-14 The present invention provides a technical solution: a screening device for coal mine processing with an anti-blocking function, comprising a base plate 1 and a mounting frame 2 symmetrically fixedly installed on the top of the base plate 1, a fixed plate 3 symmetrically fixedly connected to the middle of the top of the base plate 1, a horizontal plate 4 rotatably connected to the inner side of the two fixed plates 3, and a processing cylinder 5 fixedly installed on the top of the horizontal plate 4.

[0048] A rotating member 8 is rotatably mounted on one side of the treatment cylinder 5 , a feeding pipe 9 is fixedly mounted inside the rotating member 8 , and a screening cylinder 11 is rotatably mounted on the inner side of the treatment cylinder 5 .

[0049] A screening assembly 6 is provided on the top of the base plate 1. The screening assembly 6 includes a motor 61 fixedly mounted on the inner top surface of a side mounting frame 2. The output end of the motor 61 is fixedly connected to a left reciprocating screw rod 62. A baffle 63 is symmetrically fixedly connected to the outer side of the left reciprocating screw rod 62. The outer side of the left reciprocating screw rod 62 is threadedly connected to a left threaded sleeve 64. One side of the left threaded sleeve 64 is fixedly connected to a left top plate 65. The lower outer side of the left reciprocating screw rod 62 is fixedly connected to a driving wheel 66.

[0050] The mounting frame 2 is in an inverted U-shape, a discharge door 10 is hinged on the front side of the processing cylinder 5, the screening cylinder 11 is fixedly installed with the rotating member 8, the bottom end of the left reciprocating screw 62 is rotatably connected to the base plate 1, and the left threaded sleeve 64 is located between the upper and lower baffles 63.

[0051] The top of the base plate 1 is rotatably connected to the side away from the motor 61, and the lower outer side of the right reciprocating screw rod 67 is fixedly connected to the driven wheel 68. A cross belt 69 is sleeved between the driving wheel 66 and the driven wheel 68. The outer side of the right reciprocating screw rod 67 is threadedly connected to the right threaded sleeve 610, and one side of the right threaded sleeve 610 is fixedly connected to the right top plate 611. The top of the base plate 1 is symmetrically fixedly connected to the limiting rod 612.

[0052] A motor 2 613 is fixedly installed on the other side of the processing cylinder 5. The output end of the motor 2 613 passes through the processing cylinder 5 and is fixedly connected to a rotating shaft 614. The end of the rotating shaft 614 away from the motor 2 613 is fixedly connected to the screening cylinder 11. A turntable 615 is fixedly connected to the outside of the rotating shaft 614. An arc block 616 is fixedly connected to the outside of the turntable 615. An arc piece 617 is symmetrically fixedly connected to the upper inner part of the processing cylinder 5. A center rod 618 and a side rod 619 are slidably installed inside the left arc piece 617.

[0053] One side limit rod 612 is slidably connected to the left top plate 65, and the other side limit rod 612 is slidably connected to the right top plate 611. The rotating shaft 614 is rotatably connected to the processing cylinder 5. Three arc blocks 616 are provided. The outer side of the screening cylinder 11 is fitted with the arc piece 617, and the outer side of the screening cylinder 11 is evenly provided with sieve holes.

[0054] One end of the center rod 618 and the side rod 619 are fixedly connected to a trapezoidal block 620, and the outer side of the center rod 618 and the side rod 619 are sleeved with a spring 621. The other end of the center rod 618 and the side rod 619 are fixedly connected to a horizontal bar 622, and the outer side of the horizontal bar 622 is fixedly connected with a scraper 623 at intervals. The inner side of the horizontal bar 622 is provided with a slide groove 624, and the inner side of the slide groove 624 is fixedly connected to a push rod 625.

[0055] There are two side rods 619, which are located on both sides of the center rod 618. The trapezoidal block 620 is located on the side of the left arc piece 617 close to the motor 2 613. One end of the spring 1 621 is fixedly connected to the left arc piece 617, and the other end of the spring 1 621 is fixedly connected to the trapezoidal block 620.

[0056] The scraper 623 on the outside of the center rod 618 and the scraper 623 on the outside of the side rod 619 are staggered, the horizontal bar 622 fits against the outside of the screening drum 11, and a vertical groove 626 is provided on the inside of the processing drum 5. A spring 2 627 is fixedly installed inside the vertical groove 626, and a slide rod 628 is slidably connected to the inside of the vertical groove 626. The slide rod 628 is fixedly connected to the spring 2 627.

[0057] The end of the slide rod 628 away from the spring 2 627 is fixedly connected to a knocking block 629, and the outer side of the slide rod 628 is fixedly connected to an inclined block 630. The push rod 625 abuts against the inclined surface of the inclined block 630. The slide rod 628 and the inclined block 630 are both slidably connected to the slide groove 624, and the knocking block 629 fits against the outer side of the screening drum 11.

[0058] Example 1: Figures 1-11 As shown, the operator first opens the feeding pipe 9 to add the coal mineral material into the screening drum 11, then closes the feeding pipe 9, starts motor 1 61 and motor 2 613, and motor 1 61 drives the left reciprocating screw 62 to rotate, and the limit rod 612 limits the left top plate 65 and the right top plate 611. The left reciprocating screw 62 drives the driving wheel 66 to rotate, and the driving wheel 66 drives the driven wheel 68 to rotate synchronously in the opposite direction through the cross belt 69, thereby realizing the reciprocating up and down movement of the left threaded sleeve 64 and the right threaded sleeve 610, so that the left top plate 65 and the right top plate 611 move back and forth up and down, and the moving directions of the left top plate 65 and the right top plate 611 are opposite. When the left top plate 65 drives the cross plate 4 to rise, the right top plate 611 descends to make way for the cross plate 4, realizing the reciprocating tilting swing of the cross plate 4, which is convenient for the tilting and swinging of the processing drum 5 and the screening drum 11.

[0059] Motor 2 613 will drive the rotating shaft 614 and the screening drum 11 to rotate, facilitating the rotation and screening of the screening drum 11. Qualified coal and mineral materials will pass through the sieve holes and fall into the processing drum 5 for collection. The rotating shaft 614 will drive the turntable 615 to rotate, and the turntable 615 will drive the arc block 616 to squeeze the inclined surface of the trapezoidal block 620. The trapezoidal block 620 will be squeezed to compress the spring 1 621 and drive the side rod 619 or the center rod 618 to move. The center rod 618 or the side rod 619 will drive the cross bar 622 to move, and the cross bar 622 will drive the scraper 623 to move.

[0060] The scraper 623 connected to the outside of the center rod 618 and the scraper 623 connected to the outside of the side rod 619 are arranged at intervals, so that when the screen drum 11 rotates, multiple scrapers 623 will scrape and clean the entire surface of the screen drum 11, and the movement of the horizontal bar 622 will drive the push rod 625 to squeeze the inclined block 630. The inclined block 630 is squeezed and drives the slide bar 628 to rise. The slide bar 628 drives the knocking block 629 to rise and compress the spring 2 627. When the arc block 616 is separated from the trapezoidal block 620, the elastic force of the spring 1 621 drives the horizontal bar 622 and the push rod 625 is reset, and at this time the elastic force of spring 2 627 drives the slide bar 628 and the knocking block 629 to press on the surface of the screening drum 11. The knocking block 629 not only plays a scraping role, but also plays a knocking role on the screening drum 11, further reducing the blockage of the screen holes of the screening drum 11, and cooperating with the processing drum 5 to drive the reciprocating tilt of the screening drum 11 to prevent the larger pieces of coal and mineral materials inside the screening drum 11 from sinking to the bottom, solving the problem that the larger pieces of coal and mineral materials will block the screen holes when they are located in the lower layer, and it is not convenient to realize the rapid screening of small pieces of coal by vibration alone, which reduces the efficiency of screening work.

[0061] A dust collecting assembly 7 is provided on the inner side of the mounting frame 2. The dust collecting assembly 7 includes a spring three 71 and a collecting box 72. The spring three 71 is fixedly mounted on the bottom of the left top plate 65 and the right top plate 611. The bottom end of the spring three 71 is fixedly connected to the top of the bottom plate 1. The collecting box 72 is fixedly mounted on one side of the inner top surface of the mounting frame 2. A connecting pipe 73 is fixedly mounted on the bottom of the collecting box 72.

[0062] A transfer box 74 is fixedly installed at one end of the connecting pipe 73 away from the collecting box 72, a sleeve 76 is fixedly installed at the bottom of the transfer box 74, the tops of the left top plate 65 and the right top plate 611 are fixedly connected with a piston rod 78, the piston rod 78 is slidably connected to the sleeve 76, and a filter screen 77 is fixedly installed on the upper part of the sleeve 76.

[0063] The collecting box 72 is connected to the transfer box 74 through the connecting pipe 73. A one-way valve 75 is fixedly installed on the outside of the transfer box 74. The sleeve 76 is connected to the transfer box 74. An extraction pipe 79 is connected between the transfer box 74 and the processing tube 5. A one-way valve 2 710 is fixedly installed on the outside of the extraction pipe 79. A pressure relief valve 711 is fixedly installed on the top side of the collecting box 72.

[0064] Example 2: Figure 12-14 As shown, the left top plate 65 and the right top plate 611 will move back and forth up and down, and the spring three 71 assists the lifting and lowering of the left top plate 65 and the right top plate 611. When the left top plate 65 descends, it will drive the piston rod 78 to descend inside the sleeve 76 to extract air. The one-way valve 75 is closed, and the piston rod 78 exhausts the interior of the treatment tube 5 through the transfer box 74 and the extraction pipe 79. The smoke and dust enter the transfer box 74 through the extraction pipe 79, and the filter screen 77 blocks the smoke and dust.

[0065] When the left top plate 65 rises, the left top plate 65 drives the piston rod 78 to squeeze the air inside the sleeve 76, the one-way valve 710 is closed, and the smoke in the transfer box 74 is input into the collection box 72 for storage through the connecting pipe 73. The right top plate 611 is raised and lowered in the same way as the left top plate 65, thereby realizing the extraction of smoke generated by screening inside the processing cylinder 5 when the processing cylinder 5 is tilted and swung, reducing the impact of smoke when the discharge door 10 is subsequently opened to discharge. An inflation device is installed on the outside of the processing cylinder 5, which can maintain a constant pressure for the inflation inside the processing cylinder 5 without affecting the extraction of the extraction pipe 79. The pressure relief valve 711 is used to assist in maintaining the pressure inside 72. When the collection box 72 stores too much gas and causes the internal pressure to increase, the pressure is released by opening the pressure relief valve 711 to reduce the risk of expansion and explosion of the collection box 72.

[0066] Working principle: When using this device, first, Figures 1-14 As shown, the operator first opens the feeding pipe 9 to add the coal mineral material into the screening drum 11, and then closes the feeding pipe 9, so that when the left top plate 65 drives the horizontal plate 4 to rise, the right top plate 611 drops to make way for the horizontal plate 4, which is convenient for the tilting and swinging of the processing drum 5 and the screening drum 11. When the left top plate 65 drops, the smoke enters the transfer box 74 through the extraction pipe 79. When the left top plate 65 rises, the smoke in the transfer box 74 is input into the collection box 72 for storage through the connecting pipe 73, so that the smoke generated by the screening inside the processing drum 5 is exhausted when the processing drum 5 is tilted and swung. The motor 2 613 will drive the rotating shaft 614 and the screening drum 11 to rotate, which is convenient for the rotation and screening of the screening drum 11. Qualified coal mineral materials fall into the processing drum 5 through the sieve holes for collection, and multiple scrapers are installed. 623 will slide and scrape the entire surface of the screening drum 11 to clean it. The movement of the horizontal bar 622 will drive the push rod 625 to squeeze the inclined block 630. The inclined block 630 will be squeezed and drive the slide bar 628 to rise. The slide bar 628 drives the knocking block 629 to rise and compresses the spring 2 627. When the arc block 616 is separated from the trapezoidal block 620, the elastic force of the spring 1 621 drives the horizontal bar 622 and the push rod 625 to reset. At this time, the elastic force of the spring 2 627 drives the slide bar 628 and the knocking block 629 to press on the surface of the screening drum 11. The knocking block 629 plays a scraping and knocking role, which further reduces the blockage of the sieve holes of the screening drum 11, and cooperates with the reciprocating tilt of the screening drum 11 when the processing drum 5 drives the screening drum 11 to prevent larger pieces of coal and mineral materials inside the screening drum 11 from sinking to the bottom.

[0067] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A screening device for coal mine processing with an anti-blocking function, comprising a base plate (1) and a mounting frame (2) symmetrically fixedly mounted on the top of the base plate (1); a fixed plate (3) is symmetrically fixedly connected to the middle of the top of the base plate (1); a transverse plate (4) is rotatably connected to the inner sides of the two fixed plates (3); a processing cylinder (5) is fixedly mounted on the top of the transverse plate (4); It is characterized by: Also includes: A screening assembly (6) is provided on the top of the bottom plate (1), a dust collecting assembly (7) is provided on the inner side of the mounting frame (2), a rotating member (8) is rotatably mounted on one side of the processing cylinder (5), a feeding pipe (9) is fixedly mounted inside the rotating member (8), and a screening cylinder (11) is rotatably mounted on the inner side of the processing cylinder (5); The screening assembly (6) comprises a left top plate (65) and a right top plate (611), a second motor (613) is fixedly installed on the other side of the processing cylinder (5), an output end of the second motor (613) passes through the processing cylinder (5) and is fixedly connected to a rotating shaft (614), an end of the rotating shaft (614) away from the second motor (613) is fixedly connected to the screening cylinder (11), a turntable (615) is fixedly connected to the outside of the rotating shaft (614), an arc block (616) is fixedly connected to the outside of the turntable (615), an arc piece (617) is symmetrically fixedly connected to the inner upper part of the processing cylinder (5), and a center rod (618) and a side rod (619) are slidably installed inside the left side of the arc piece (617); One end of the center rod (618) and the side rod (619) are fixedly connected to a trapezoidal block (620), the outer sides of the center rod (618) and the side rod (619) are sleeved with a spring (621), the other ends of the center rod (618) and the side rod (619) are fixedly connected to a horizontal bar (622), the outer sides of the horizontal bar (622) are fixedly connected with a scraper (623) at intervals, and the inner side of the horizontal bar (622) is provided with a slide groove (624), and the slide groove A push rod (625) is fixedly connected to one side of the interior of (624), two side rods (619) are provided, and the two side rods (619) are located on both sides of the center rod (618), and the trapezoidal block (620) is located on the side of the left side of the arc-shaped piece (617) close to the second motor (613), one end of the spring (621) is fixedly connected to the left side of the arc-shaped piece (617), and the other end of the spring (621) is fixedly connected to the trapezoidal block (620); The scraper (623) on the outside of the center rod (618) and the scraper (623) on the outside of the side rod (619) are arranged in a staggered manner, the horizontal bar (622) is in contact with the outside of the screening cylinder (11), a vertical groove (626) is provided on the inside of the processing cylinder (5), a second spring (627) is fixedly installed inside the vertical groove (626), a sliding rod (628) is slidably connected inside the vertical groove (626), and the sliding rod (628) is fixedly connected to the second spring (627); The end of the slide rod (628) away from the second spring (627) is fixedly connected to a knocking block (629), the outer side of the slide rod (628) is fixedly connected to an inclined block (630), the push rod (625) is in contact with the inclined surface of the inclined block (630), the slide rod (628) and the inclined block (630) are both slidably connected to the chute (624), and the knocking block (629) is in contact with the outer side of the screening cylinder (11).

2. The screening equipment for coal mine processing with anti-blocking function according to claim 1, characterized in that: The screening assembly (6) further comprises a motor (61) fixedly mounted on the inner top surface of the mounting frame (2) on one side, the output end of the motor (61) being fixedly connected to a left reciprocating screw (62), a baffle (63) being symmetrically fixedly connected to the outer side of the left reciprocating screw (62), a left threaded sleeve (64) being threadedly connected to the outer side of the left reciprocating screw (62), a left top plate (65) being fixedly connected to one side of the left threaded sleeve (64), and a driving wheel (66) being fixedly connected to the outer side of the lower part of the left reciprocating screw (62).

3. The screening equipment for coal mine processing with anti-blocking function according to claim 2, characterized in that: The top of the base plate (1) is rotatably connected to a side away from the motor (61) with a right reciprocating screw rod (67), the lower outer side of the right reciprocating screw rod (67) is fixedly connected to a driven wheel (68), a cross belt (69) is sleeved between the driving wheel (66) and the driven wheel (68), the outer side of the right reciprocating screw rod (67) is threadedly connected to a right threaded sleeve (610), one side of the right threaded sleeve (610) is fixedly connected to a right top plate (611), and the top of the base plate (1) is symmetrically fixedly connected to a limit rod (612).

4. The screening equipment for coal mine processing with anti-blocking function according to claim 3, characterized in that: The mounting frame (2) is in an inverted U-shape, a discharge door (10) is hinged on one side of the front of the processing cylinder (5), the screening cylinder (11) is fixedly mounted on the rotating member (8), the bottom end of the left reciprocating screw (62) is rotatably connected to the bottom plate (1), and the left threaded sleeve (64) is located between the upper and lower baffles (63).

5. The screening equipment for coal mine processing with anti-blocking function according to claim 4, characterized in that: The limiting rod (612) on one side is slidably connected to the left top plate (65), and the limiting rod (612) on the other side is slidably connected to the right top plate (611). The rotating shaft (614) is rotatably connected to the processing cylinder (5). Three arc blocks (616) are provided. The outer side of the screening cylinder (11) is in contact with the arc piece (617), and the outer side of the screening cylinder (11) is evenly provided with sieve holes.

6. The screening equipment for coal mine processing with anti-blocking function according to claim 1, characterized in that: The dust collecting assembly (7) comprises a spring three (71) and a collection box (72); the spring three (71) is fixedly mounted on the bottom of the left top plate (65) and the right top plate (611); the bottom end of the spring three (71) is fixedly connected to the top of the bottom plate (1); the collection box (72) is fixedly mounted on one side of the inner top surface of the mounting frame (2); and a connecting pipe (73) is fixedly mounted on the bottom of the collection box (72).

7. The screening equipment for coal mine processing with anti-blocking function according to claim 6, characterized in that: A transfer box (74) is fixedly mounted on one end of the connecting pipe (73) away from the collecting box (72), a sleeve (76) is fixedly mounted on the bottom of the transfer box (74), a piston rod (78) is fixedly connected to the top of the left top plate (65) and the right top plate (611), the piston rod (78) is slidably connected to the sleeve (76), and a filter screen (77) is fixedly mounted on the upper part of the sleeve (76).

8. The screening equipment for coal mine processing with anti-blocking function according to claim 7, characterized in that: The collecting box (72) is connected to the transfer box (74) through a connecting pipe (73), a one-way valve (75) is fixedly installed on the outside of the transfer box (74), the sleeve (76) is connected to the transfer box (74), an extraction pipe (79) is connected between the transfer box (74) and the treatment cylinder (5), a one-way valve (710) is fixedly installed on the outside of the extraction pipe (79), and a pressure relief valve (711) is fixedly installed on one side of the top of the collecting box (72).

Images