A square swing screen for screening and classifying fine particulate material

Abstract

The utility model discloses a square swing screen for fine granule material screening classification, including support frame, the inside of support frame is equipped with adjustable screening bin, the inside right side of screening bin is fixedly connected with the mounting block of up -and -down symmetry distribution, the left surface of mounting block all rotationally connected with the screen cloth of up -and -down symmetry distribution, still include swing mechanism, swing mechanism: it includes fixed seat no.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial and mineral material screening equipment, specifically a square gyratory screen for screening and grading fine particulate materials. Background Technology

[0002] In the production process of industrial and mining enterprises, many granular ores or various materials are often used. In order to improve the quality of industrial products, these materials need to be screened to extract raw materials that meet the production conditions. Square gyratory screens are often used to screen granular materials. In the prior art, the authorized patent CN214718239U discloses a square gyratory screen, including a fixed frame and a screen box suspended on the fixed frame. The two sides of the screen box are connected to the fixed frame by two universal joint shafts. An upper screening component is provided at the top of the screen box, and a lower screening component is provided at the bottom of the screen box. A drive chamber is provided in the middle of the screen box between the upper and lower screening components. A vibrator is provided in the drive chamber. A drive component for driving the vibrator is provided on the side wall of the middle of the screen box. A material distribution component is provided on one side of the screen box. The material distribution component is connected to both the upper and lower screening components. The following are the disadvantages of this type of square gyratory screen: the driving force provided by the drive motor causes the upper and lower counterweights to rotate synchronously and generate vibration, which in turn drives the screen box to vibrate, thereby screening the material. However, the screening effect is limited. Therefore, we propose a square gyratory screen for screening and grading fine particulate materials. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a square oscillating screen for screening and grading fine particulate materials. Through an oscillating mechanism, the screen reciprocates around the rotational connection point between the screen and the mounting block as the screening chamber oscillates. This causes the material to be lifted up by the reciprocating oscillation of the screen during screening, reducing screen clogging while allowing large particles to float and small particles to sink, thereby increasing the screening rate and improving the screening effect. This effectively solves the problems in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a square gyratory screen for screening and grading fine particulate materials, comprising a support frame, an adjustable screening chamber inside the support frame, mounting blocks symmetrically distributed vertically fixedly connected to the right side of the screening chamber, and screens symmetrically distributed vertically rotatably connected to the left surface of the mounting blocks, and also comprising a gyratory mechanism. The oscillating mechanism includes a second fixed seat, a third fixed seat, a sliding column, a sliding cylinder, a spring, and an arc-shaped limiting block. The second fixed seat is fixedly connected to the lower surface of the screen. A sliding column is rotatably connected to the lower side of each second fixed seat. The front and rear surfaces of the screening chamber are each fixedly connected to a third fixed seat. A sliding cylinder is rotatably connected to the upper side of each third fixed seat. The sliding column is slidably connected to the interior of a vertically adjacent sliding cylinder on the same side. A spring is fixedly connected between the lower surface of the sliding column and the inner wall of the sliding cylinder. Arc-shaped limiting blocks are fixedly connected to the front and rear surfaces of the screening chamber. The screen is slidably connected between two vertically adjacent arc-shaped limiting blocks. Through the oscillating mechanism, the screen reciprocates around the rotational connection point between the screen and the mounting block as the screening chamber oscillates. This causes the material to be lifted by the reciprocating oscillation of the screen during screening, reducing screen clogging while allowing large particles to float and small particles to sink, thereby increasing the screening rate and improving the screening effect.

[0005] Furthermore, a control switch is provided on the outside of the support frame, and the input terminal of the control switch is electrically connected to an external power source to control the operation of electrical appliances.

[0006] Furthermore, a protective door is hinged to the right surface of the screening chamber via a hinge. A feed inlet is provided on the upper side of the protective door, and a feed channel is provided inside the protective door. A partition plate is fixedly connected to the upper inside of the protective door, and a uniformly distributed diversion plate is fixedly connected to the left side inside the feed channel, so that the material enters the interior of the screening chamber.

[0007] Furthermore, the left surface of the screening chamber is hinged with two protective doors that are symmetrically distributed vertically. The interior of each protective door has a uniformly distributed discharge chute. The left end of each protective door is fixedly connected with a uniformly distributed discharge cylinder. The discharge cylinders are connected to the horizontally adjacent discharge chute to discharge the screened material.

[0008] Furthermore, the swing mechanism also includes fixed blocks and counterweight balls. The fixed blocks are all fixedly connected to the lower surface of the screen, and the counterweight balls are slidably connected inside the fixed blocks to drive the screen to swing.

[0009] Furthermore, a motor is fixedly connected to the front surface of the screening chamber, and a second pulley is fixedly connected to the upper end of the motor's output shaft. A rotating shaft is rotatably connected inside the screening chamber, and a first pulley is fixedly connected to the lower side of the outer surface of the rotating shaft. The first pulley and the second pulley are connected by a belt drive. A counterweight is fixedly connected to the upper end of the rotating shaft. The input end of the motor is electrically connected to the output end of the control switch to provide driving force, causing the counterweight to rotate and drive the screening chamber to vibrate.

[0010] Furthermore, the upper inner side of the support frame is rotatably connected to uniformly distributed dampers. The lower side of the telescopic end of each damper is fixedly connected to a connecting seat two. The lower end of each connecting seat two is rotatably connected to a connecting rod. The lower end of each connecting rod is rotatably connected to a connecting seat one. The lower end of each connecting seat one is fixedly connected to a connecting block. The front and rear surfaces of the screening chamber are fixedly connected to a fixing seat one. Each fixing seat one is fixedly connected to the side of the adjacent connecting block on the same side near the screening chamber, thus supporting the screening chamber.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This square gyratory screen for screening and classifying fine particulate materials has the following advantages: The oscillating mechanism causes the screen to reciprocate around the connection point between the screen and the mounting block as the screening chamber oscillates. This reciprocating oscillation of the screen during screening reduces screen clogging, causes large particles to float while small particles sink, thereby increasing the screening rate and improving the screening effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is a cross-sectional structural diagram of the protective door of this utility model; Figure 5 This is a cross-sectional view of the screening chamber of this utility model. Figure 6 This is an exploded structural diagram of the connecting seat 1, connecting rod, connecting seat 2, and damper of this utility model; Figure 7 This is a schematic diagram of the structure of the fixing block and the counterweight ball of this utility model.

[0013] In the diagram: 1 Support frame, 2 Screening bin, 3 Protective door one, 4 Protective door two, 5 Fixed seat one, 6 Connecting block, 7 Connecting seat one, 8 Connecting rod, 9 Swinging mechanism, 91 Fixed seat two, 92 Fixed seat three, 93 Sliding column, 94 Sliding cylinder, 95 Spring, 96 Fixed block, 97 Counterweight ball, 98 Arc-shaped limit block, 10 Connecting seat two, 11 Damper, 12 Discharge cylinder, 13 Feed inlet, 14 Divider plate, 15 Diverter plate, 16 Motor, 17 Rotating shaft, 18 Belt pulley one, 19 Counterweight block, 20 Screen, 21 Control switch, 22 Mounting block, 23 Belt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-7This embodiment provides a technical solution: a square gyratory screen for screening and grading fine particulate materials, including a support frame 1. An adjustable screening chamber 2 is provided inside the support frame 1. A uniformly distributed damper 11 is rotatably connected to the upper side of the support frame 1. A connecting seat 2 10 is fixedly connected to the lower side of the telescopic end of each damper 11. A connecting rod 8 is rotatably connected to the lower end of each connecting seat 2 10. A connecting seat 1 7 is rotatably connected to the lower end of each connecting rod 8. A connecting block 6 is fixedly connected to the lower end of each connecting seat 1 7. Fixed seats 1 5 are fixedly connected to the front and rear surfaces of the screening chamber 2. Each fixed seat 1 5 is fixedly connected to the side of the adjacent connecting block 6 near the screening chamber 2. During the gyratory process of the screening chamber 2, the connecting seat 1 7 and the connecting rod 8 are rotatably connected. The first seat 7 can swing back and forth. The connecting rod 8 is rotatably connected to the second connecting seat 10. The connecting rod 8 can swing left and right, thereby supporting the screening chamber 2. The force generated during the swing of the screening chamber 2 is transmitted through the first fixed seat 5, the connecting block 6, the first connecting seat 7, the connecting rod 8, and the second connecting seat 10 to the lower side of the telescopic end of the damper 11. The damper 11 generates resistance to offset this force, thereby reducing the vibration of the support frame 1, thus improving the service life of the support frame 1 and reducing noise. The right side of the inside of the screening chamber 2 is fixedly connected to symmetrically distributed mounting blocks 22. The left surface of the mounting blocks 22 is rotatably connected to symmetrically distributed screens 20. The right surface of the screening chamber 2 is hinged to a protective door 3 by a hinge. The upper side of the protective door 3 has an opening. The feed inlet 13 and the inner side of the protective door 3 have feed channels. A partition plate 14 is fixedly connected to the upper side of the inner side of the protective door 3. A uniformly distributed diversion plate 15 is fixedly connected to the left side of the inner side of the feed channel. Material is fed into the feed channel through the feed inlet 13. Under the action of the partition plate 14, the material enters the upper and lower sides of the feed channel respectively. Under the guidance of the diversion plate 15, the material moves to the right side of the upper surface of the screen 20, preventing all material from accumulating in one area of ​​the screen 20. The left surface of the screening chamber 2 is hinged with two symmetrically distributed protective doors 4. Each protective door 4 has a uniformly distributed discharge trough inside. Each protective door 4 has a uniformly distributed discharge cylinder 12 fixedly connected to its left end. The discharge cylinders 12 are all horizontally adjacent to... The discharge chute is connected to the support frame 1. A control switch 21 is installed on the outside of the support frame 1. The input end of the control switch 21 is electrically connected to an external power source. A motor 16 is fixedly connected to the front surface of the screening chamber 2. A second pulley is fixedly connected to the upper end of the output shaft of the motor 16. A rotating shaft 17 is rotatably connected inside the screening chamber 2. A first pulley 18 is fixedly connected to the lower side of the outer surface of the rotating shaft 17. The first pulley 18 and the second pulley are connected by a belt 23. A counterweight 19 is fixedly connected to the upper end of the rotating shaft 17. The input end of the motor 16 is electrically connected to the output end of the control switch 21. When the control switch 21 is operated, the motor 16 is started. The output shaft of the motor 16 rotates, driving the second pulley to rotate. Under the transmission action of the belt 23, the first pulley 18 rotates, driving the rotating shaft 17 to rotate.The counterweight 19 is rotated, and its central axis is not collinear with that of the rotating shaft 17. This rotation causes the counterweight 19 to drive the screening chamber 2 in a reciprocating, approximately linear motion in the horizontal plane. During this translation, the screening chamber 2 experiences a slight swaying motion, causing the material to tumble and loosen on the screens 20. Since there are two or more screens 20, larger materials remain on the uppermost screen, while smaller materials pass through and fall to the lower screen, eventually landing on the inner surface of the screening chamber 2. Because the screening chamber 2 is inclined, the material moves from right to left along the upper surface of the screens 20 and the inner surface of the screening chamber 2 during screening, ultimately entering the discharge chute and exiting through the discharge cylinder 12. A pipe can be connected to the lower end of the discharge cylinder 12 for material collection and transport. The system also includes a swing mechanism 9. The swing mechanism 9 includes a second fixed seat 91, a third fixed seat 92, a sliding column 93, a sliding cylinder 94, a spring 95, and an arc-shaped limiting block 98. The second fixed seat 91 is fixedly connected to the lower surface of the screen 20. A sliding column 93 is rotatably connected to the lower side of each second fixed seat 91. The front and rear surfaces of the screening chamber 2 are respectively fixedly connected to the third fixed seat 92. A sliding cylinder 94 is rotatably connected to the upper side of each third fixed seat 92. The sliding columns 93 are slidably connected to the interiors of vertically adjacent sliding cylinders 94 on the same side. Springs 95 are fixedly connected between the lower surface of the screen 3 and the inner wall of the slide cylinder 94 (the protective door 3 can be opened to disassemble the slide column 93 and the slide cylinder 94, and then replace the springs 95 to prevent the springs 95 from losing elasticity after long-term use). Arc-shaped limiting blocks 98 are fixedly connected to the front and rear surfaces of the screening chamber 2. The screens 20 are slidably connected between two longitudinally adjacent arc-shaped limiting blocks 98. The swing mechanism 9 also includes a fixed block 96 and a counterweight ball 97. All fixed blocks 96 are fixedly connected to the lower surface of the screen 20. A counterweight ball 97 is slidably connected inside each fixed block 96. As the screen 20 swings back and forth with the screening chamber 2, the counterweight ball 97 rolls inside the fixed block 96. When the counterweight ball 97 rolls to the front of the fixed block 96, the front of the screen 20 tilts downwards, and the rear of the screen 20 tilts upwards. The spring 95 on the front side contracts, and the spring 96 on the rear side relaxes. When the counterweight ball 97 rolls to the rear of the fixed block 96, the screen... The front side of screen 20 is tilted upwards, and the rear side of screen 20 is tilted downwards. The spring 95 on the front side is relaxed, and the spring 96 on the rear side is contracted, so that screen 20 swings back and forth around the rotating connection point between screen 20 and mounting block 22 (both the front and rear surfaces of screen 20 are fixedly connected with rubber sealing gaskets to ensure the sealing of the connection between screen 20 and the arc-shaped limiting block 98), preventing material from entering between screen 20 and arc-shaped limiting block 98, and further improving the screening efficiency of screen 20.

[0016] The working principle of the square gyratory screen for screening and grading fine particulate materials provided by this utility model is as follows: When using this square gyratory screen for screening and grading fine particulate materials, the material is fed into the feeding channel through the feed inlet 13. Under the action of the partition plate 14, the material enters the upper and lower sides of the feeding channel respectively. Under the guidance of the diversion plate 15, the material moves to the right side of the upper surface of the screen 20, avoiding the material from accumulating in one area of ​​the screen 20. The control switch 21 is operated to start the motor 16. The output shaft of the motor 16 rotates, driving the second pulley to rotate. Under the transmission action of the belt 23, the first pulley 18 rotates, driving the rotating shaft 17 to rotate, causing the counterweight 19 to rotate. The central axis of the counterweight 19 is parallel to the rotating shaft 17. The central axes of the 7 are not on the same straight line, causing the counterweight 19 to drive the screening chamber 2 to reciprocate in an approximately linear motion in the horizontal plane during rotation. While translating, the screening chamber 2 will sway slightly, causing the material to tumble and loosen on the screens 20. Since there are two or more screens 20, larger materials remain on the uppermost screen, while smaller materials pass through the upper screens 20 and fall to the lower screens 20, finally landing on the inner plane of the screening chamber 2. Simultaneously, because the screening chamber 2 is inclined, the material moves from right to left along the upper surface of the screens 20 and the upper surface of the inner plane of the screening chamber 2 during screening, eventually entering the discharge chute and being discharged from the discharge cylinder 12. The lower end is connected to a pipe for collecting and conveying materials. Simultaneously, as the screen 20 swings back and forth with the screening bin 2, the counterweight ball 97 rolls inside the fixed block 96. When the counterweight ball 97 rolls to the front of the fixed block 96, the front of the screen 20 tilts downwards, and the rear of the screen 20 tilts upwards. The front spring 95 contracts, and the rear spring 96 relaxes. When the counterweight ball 97 rolls to the rear of the fixed block 96, the front of the screen 20 tilts upwards, and the rear of the screen 20 tilts downwards. The front spring 95 relaxes, and the rear spring 96 contracts, causing the screen 20 to swing back and forth around the rotational connection point between the screen 20 and the mounting block 22. (Rubber sealing gaskets are fixedly connected to both the front and rear surfaces of the screen 20 to ensure the screen 20 and the curved surface are properly aligned.) The sealing of the arc-shaped connection inside the limiting block 98 prevents material from entering between the screen 20 and the arc-shaped limiting block 98, further improving the screening efficiency of the screen 20. During the swaying process of the screening chamber 2, the connecting seat 1 7 and the connecting rod 8 are rotatably connected, and the connecting seat 1 7 can swing back and forth. The connecting rod 8 and the connecting seat 2 10 are rotatably connected, and the connecting rod 8 can swing left and right, thereby supporting the screening chamber 2. The force generated during the swaying process of the screening chamber 2 is transmitted to the lower side of the telescopic end of the damper 11 through the fixed seat 1 5, the connecting block 6, the connecting seat 1 7, the connecting rod 8 and the connecting seat 2 10. The damper 11 generates resistance to offset this force, thereby reducing the vibration of the support frame 1, thus improving the service life of the support frame 1 and reducing noise.

[0017] It is worth noting that the motor 16 disclosed in the above embodiments can be Y2-132S-4, and the control switch 21 is provided with a control button corresponding to the motor 16 and used to control its switching.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A square gyratory screen for screening and grading fine particulate materials, comprising a support frame (1), wherein an adjustable screening chamber (2) is provided inside the support frame (1), and mounting blocks (22) symmetrically distributed vertically are fixedly connected to the right side of the screening chamber (2), and screens (20) symmetrically distributed vertically are rotatably connected to the left surface of the mounting blocks (22), characterized in that: It also includes a swing mechanism (9); Swinging mechanism (9): It includes fixed seat two (91), fixed seat three (92), sliding column (93), sliding cylinder (94), spring (95) and arc-shaped limiting block (98). Fixed seat two (91) is fixedly connected to the lower surface of screen (20). Sliding column (93) is rotatably connected to the lower side of fixed seat two (91). Fixed seat three (92) is fixedly connected to the front and rear surfaces of the screening chamber (2). Sliding cylinder (94) is rotatably connected to the upper side of fixed seat three (92). Sliding column (93) is slidably connected to the interior of vertically adjacent sliding cylinder (94) on the same side. Spring (95) is fixedly connected between the lower surface of sliding column (93) and the inner wall of sliding cylinder (94). Arc-shaped limiting block (98) is fixedly connected to the front and rear surfaces of the screening chamber (2). Screen (20) is slidably connected between two longitudinally adjacent arc-shaped limiting blocks (98).

2. A square gyratory screen for screening and classifying fine particulate materials according to claim 1, characterized in that: A control switch (21) is provided on the outside of the support frame (1), and the input end of the control switch (21) is electrically connected to an external power source.

3. A square gyratory screen for screening and classifying fine particulate materials according to claim 1, characterized in that: The right surface of the screening chamber (2) is hinged with a protective door (3). The upper side of the protective door (3) is provided with a feed inlet (13). The inside of the protective door (3) is provided with a feed channel. The upper inside of the protective door (3) is fixedly connected with a partition plate (14). The left side inside the feed channel is fixedly connected with a uniformly distributed diversion plate (15).

4. A square vibrating screen for screening and classifying fine particulate materials according to claim 1, characterized in that: The left surface of the screening chamber (2) is hinged by two hinges to a symmetrically distributed protective door (4). The interior of the protective door (4) is provided with a uniformly distributed discharge trough. The left end of the protective door (4) is fixedly connected to a uniformly distributed discharge cylinder (12). The discharge cylinder (12) is connected to the horizontally adjacent discharge trough.

5. A square gyratory screen for screening and classifying fine particulate materials according to claim 1, characterized in that: The swing mechanism (9) also includes a fixed block (96) and a counterweight ball (97). The fixed block (96) is fixedly connected to the lower surface of the screen (20), and the counterweight ball (97) is slidably connected inside the fixed block (96).

6. A square vibrating screen for screening and classifying fine particulate materials according to claim 2, characterized in that: A motor (16) is fixedly connected to the front surface of the screening chamber (2). A second pulley is fixedly connected to the upper end of the output shaft of the motor (16). A rotating shaft (17) is rotatably connected inside the screening chamber (2). A first pulley (18) is fixedly connected to the lower side of the outer surface of the rotating shaft (17). The first pulley (18) and the second pulley are connected by a belt (23). A counterweight (19) is fixedly connected to the upper end of the rotating shaft (17). The input end of the motor (16) is electrically connected to the output end of the control switch (21).

7. A square gyratory screen for screening and classifying fine particulate materials according to claim 1, characterized in that: The upper inner side of the support frame (1) is rotatably connected to a uniformly distributed damper (11). The lower side of the telescopic end of the damper (11) is fixedly connected to a connecting seat two (10). The lower end of the connecting seat two (10) is rotatably connected to a connecting rod (8). The lower end of the connecting rod (8) is rotatably connected to a connecting seat one (7). The lower end of the connecting seat one (7) is fixedly connected to a connecting block (6). The front and rear surfaces of the screening chamber (2) are fixedly connected to a fixing seat one (5). The fixing seat one (5) is fixedly connected to the side of the connecting block (6) adjacent to the screening chamber (2) on the same side.

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