Linear equal-thickness vibrating screen

Abstract

The utility model discloses a linear equal-thickness vibrating screen which comprises a frame, sliding rails are arranged on the left inner wall and the right inner wall of the frame, a screen box is connected between the two sliding rails in a sliding mode, an inclinable containing box is arranged at the lower end in the frame, and the linear equal-thickness vibrating screen further comprises a linear vibrating mechanism. The linear vibration mechanism comprises a moving frame, a shifting column and sliding plates, sliding grooves are formed in the rear end of the left side wall of the frame and the rear end of the sliding rail on the left side, the shifting column is arranged on the right side face of the screen box and sequentially penetrates through the two sliding grooves, the sliding plates are arranged on the upper side and the lower side of the rear end of the left side wall of the frame, and the moving frame is slidably connected between the two sliding plates; according to the linear equal-thickness vibrating screen, the high-speed vibrating frequency can enable materials to rapidly jump and move on the screen, the chance that the materials make contact with screen holes is increased, and therefore the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening, in particular to a linear constant-thickness vibrating screen. Background Art

[0002] The linear uniform thickness vibrating screen uses the exciting force generated by the vibrating motor or vibrator to make the screen box produce linear reciprocating motion. The material is subjected to the dual effects of vibration and gravity on the screen surface, and is separated and screened according to the different particle sizes. During the working process, due to the special design of the screen surface, the material forms a uniform thickness layer on the screen surface, thereby improving the screening efficiency.

[0003] In the prior art: Patent publication number CN 207271599 U discloses a high-efficiency linear uniform thickness vibrating screen; comprising two side panels, spring upper seats are provided at the front ends and bottom ends of the two side panels, a reinforcing guard plate is provided on the outer side of the middle portion of the side panels, reinforcing angle steel is provided on the outer sides of the four sides of the side panels, a rear baffle is provided at the rear end between the two side panels, a plurality of supporting beams are provided at the lower portion between the two side panels, the tops of the supporting beams are connected to the screen panels, vibrator bases are provided at the top ends of the two side panels, a thin oil vibrator is provided on the vibrator bases, an intermediate shaft is provided between the two thin oil vibrators, and the outer power input end of one of the thin oil vibrators is connected to the motor through a power transmission device; the side surface of the screen panel is a five-section zigzag line, and the angles between the side panels and the horizontal line from top to bottom are 33°, 26°, 19°, 12°, and 5° respectively; it has the advantages of simple structure, reasonable design, light weight, low maintenance and use cost, low power consumption, and can effectively reduce the production cost of the enterprise, the use cost of the purchaser, and the infrastructure cost;

[0004] There are some problems. Although the maintenance and use costs are reduced, a single vibrator vibrating screen cannot provide sufficient vibration amplitude, so that the material cannot be fully bounced and loosened, and it is difficult to pass through the screen holes smoothly. For this reason, we propose a linear equal-thickness vibrating screen. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a linear constant thickness vibrating screen. The high-speed vibration frequency can make the material jump and move quickly on the screen, increase the chance of contact between the material and the screen holes, thereby improving the screening efficiency and effectively solving the problems in the background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a linear constant thickness vibrating screen, comprising a frame, wherein the left and right inner walls of the frame are provided with slide rails, a screen box is slidably connected between the two slide rails, a tiltable container is provided at the lower end of the interior of the frame, and further comprising a linear vibrating mechanism;

[0007] Linear vibration mechanism: It includes a mobile frame, a shifting post and a sliding plate. The rear end of the left side wall of the frame and the rear end of the left slide rail are both provided with slide grooves, and the right side of the screen box is provided with a shifting post. The shifting post passes through the two slide grooves in sequence. The upper and lower sides of the rear end of the left side wall of the frame are provided with sliding plates. The mobile frame is slidably connected between the two sliding plates. The left end of the shifting post is slidably connected to the strip opening inside the mobile frame. The high-speed vibration frequency can make the material jump and move quickly on the screen, increase the chance of material contacting the screen holes, and thus improve the screening efficiency.

[0008] Furthermore, a control switch group is provided on the right side of the frame, and the input end of the control switch group is electrically connected to an external power supply for stable control.

[0009] Furthermore, the linear vibration mechanism also includes a crank, a pin shaft 1, a connecting rod and a pin shaft 2. A motor is installed on the rear side of the frame. The input end of the motor is electrically connected to the output end of the control switch group. A crank is provided at the end of the output shaft of the motor. A pin shaft 1 is provided at the lower end of the left side of the crank. The left end of the outer arc surface of the pin shaft 1 is rotatably connected to the connecting rod. The front end of the connecting rod is rotatably connected to the pin shaft 2. The right side of the pin shaft 2 is fixedly connected to the left side of the movable frame for easy driving.

[0010] Furthermore, it also includes a collision plate, a mounting plate is provided at the rear end between the left and right inner walls of the frame, evenly distributed sliding holes are opened in the middle of the mounting plate, evenly distributed sliding columns are provided on the rear side surface of the collision plate, and the sliding columns are all slidably connected to the front and rear adjacent sliding holes, and evenly distributed springs are provided between the collision plate and the mounting plate, and the springs are all mounted on the outer arc surface of the adjacent sliding columns to facilitate the high-speed movement of the screen.

[0011] Furthermore, a limiting piece is provided at the rear end of the outer arc surface of the sliding post. The limiting piece is located behind the sliding hole. The diameter of the limiting piece is larger than the diameter of the adjacent sliding hole to prevent the sliding post from escaping from the sliding hole.

[0012] Furthermore, an inclined groove is provided in the middle of the left and right inner walls of the frame, and a rotating shaft is provided in the middle of the inclined groove. The storage box is rotatably connected between the two rotating shafts. The thickness of the storage box is smaller than the height of the inclined groove, which is convenient for workers to collect the screened items.

[0013] Furthermore, an electric cylinder is placed at the lower end of the storage box, the input end of the electric cylinder is electrically connected to the output end of the control switch group, a lifting frame is provided at the telescopic end of the electric cylinder, and a lifting frame is provided at the rear end of the lower side of the storage box. The middle part of the lifting frame is located inside the lifting frame for stable drive.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the linear constant thickness vibrating screen has the following advantages:

[0015] Driven by the linear vibration mechanism and coordinated with the collision plate, the screen can move back and forth in a straight line at high speed. The higher vibration frequency can make the material jump and move quickly on the screen, increasing the chance of contact between the material and the screen holes, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural diagram of the rear side of the utility model;

[0018] Figure 3 It is a schematic structural diagram of a partial cross-section of the left rear side of the utility model;

[0019] Figure 4 This is an enlarged structural diagram of point A of the present utility model;

[0020] Figure 5 It is a schematic structural diagram of a partial cross-section of the rear side of the utility model;

[0021] Figure 6 It is a structural schematic diagram of a partial cross-section of the middle part of the left side of the utility model.

[0022] In the figure: 1 frame, 2 linear vibration mechanism, 21 crank, 22 pin 1, 23 connecting rod, 24 pin 2, 25 movable frame, 26 shift column, 27 sliding plate, 3 slide rail, 4 screen box, 5 mounting plate, 6 motor, 7 slide column, 8 limit plate, 9 electric cylinder, 10 storage box, 11 collision plate, 12 spring, 13 lifting frame, 14 lifting frame, 15 rotating shaft, 16 control switch group, 17 strip opening. DETAILED DESCRIPTION

[0023] 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 embodiments described 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.

[0024] See also Figure 1-6The present embodiment provides a technical solution: a linear constant thickness vibrating screen, comprising a frame 1, a control switch group 16 is provided on the right side of the frame 1, the input end of the control switch group 16 is electrically connected to an external power supply, the left and right inner walls of the frame 1 are provided with slide rails 3, a screen box 4 is slidably connected between the two slide rails 3, a tiltable container 10 is provided at the lower end of the interior of the frame 1, an inclined groove is provided in the middle of the left and right inner walls of the frame 1, a rotating shaft 15 is provided in the middle of the inclined groove, the container 10 is rotatably connected between the two rotating shafts 15, and the thickness of the container 10 is less than the inclined groove. The height of the storage box 10 is determined by the following steps: an electric cylinder 9 is placed at the lower end of the storage box 10, and the input end of the electric cylinder 9 is electrically connected to the output end of the control switch group 16. A lifting frame 14 is provided at the telescopic end of the electric cylinder 9. A lifting frame 13 is provided at the rear end of the lower side of the storage box 10. The middle part of the lifting frame 13 is located inside the lifting frame 14. The items that fall after being sieved by the screen box 4 fall into the interior of the storage box 10. In order to facilitate the collection of the workers, the storage box 10 needs to be tilted. At this time, the workers operate the electric cylinder 9 by operating the control switch group 16. The telescopic end of the electric cylinder 9 pushes the lifting frame 14 upward, and the lifting frame 14 opens. The lifting frame 13 is gradually lifted, and the lifting frame 13 drives the storage box 10 to rotate around the rotating shaft 15. When it rotates to the extreme position, the upper edge of the rear end of the storage box 10 contacts the top wall of the inclined groove, and the lower edge of the front end of the storage box 10 contacts the bottom wall of the inclined groove. At the same time, during the rotation of the storage box 10, the middle part of the lifting frame 13 slides and rotates inside the lifting frame 14. At this time, the storage box 10 presents an inclined state with a low front and a high back. The items inside the storage box 10 slide forward under the action of gravity and are collected by workers. It also includes collision Plate 11, a mounting plate 5 is provided at the rear end between the left and right inner walls of the frame 1, and evenly distributed sliding holes are opened in the middle of the mounting plate 5. Evenly distributed sliding columns 7 are provided on the rear side of the collision plate 11. The sliding columns 7 are all slidably connected to the front and rear adjacent sliding holes. Evenly distributed springs 12 are provided between the collision plate 11 and the mounting plate 5. The springs 12 are all sleeved on the outer arc surface of the adjacent sliding columns 7. The rear end of the outer arc surface of the sliding column 7 is provided with a limiting piece 8. The limiting piece 8 is located behind the sliding hole. The diameter of the limiting piece 8 is larger than the diameter of the adjacent sliding hole. It also includes a linear vibration mechanism 2;

[0025] 1 and 2. The linear vibration mechanism 2 includes a movable frame 25, a shifting post 26 and a sliding plate 27. The rear end of the left side wall of the frame 1 and the rear end of the left slide rail 3 are both provided with a slide groove. The right side of the screen box 4 is provided with a shifting post 26. The shifting post 26 passes through the two slide grooves in turn. Sliding plates 27 are provided on the upper and lower sides of the rear end of the left side wall of the frame 1. The movable frame 25 is slidably connected between the two sliding plates 27. The left end of the shifting post 26 is slidably connected to the strip-shaped opening 17 inside the movable frame 25. The linear vibration mechanism 2 also includes a crank 21, a pin shaft 1 22, a connecting rod 23 and a pin shaft 2 24. A motor 6 is installed on the rear side of the frame 1. The input end of the motor 6 is electrically connected to the output end of the control switch group 16. A crank 21 is provided at the end of the output shaft of the motor 6. A pin shaft 1 is provided at the lower end of the left side of the crank 21. 22, the left end of the outer arc surface of the pin shaft 1 22 is rotatably connected to the connecting rod 23, and the front end of the connecting rod 23 is rotatably connected to the pin shaft 24. The right side of the pin shaft 24 is fixedly connected to the left side of the movable frame 25. The worker operates the control switch group 16 to operate the motor 6. The output shaft of the motor 6 drives the crank 21 and the pin shaft 1 22 to rotate as a whole. At this time, the pin shaft 1 22 drags the rear end of the connecting rod 23 to rotate. At this time, the front end of the connecting rod 23 drives the pin shaft 24 to rotate. At this time, due to the rotation restriction of the sliding plate 27 on the movable frame 25, the pin shaft 24 can only move forward and backward in a straight line. At this time, the front end of the connecting rod 23 rotates around the pin shaft 24, the pin shaft 1 22 rotates at the rear end of the connecting rod 23, and the movable frame 25 slides backward between the two sliding plates 27 (in this process, due to Due to the action of the strip opening 17, the lever 26 will not be driven to move backward for a short time) until the front wall of the strip opening 17 contacts and gives the lever 26 a backward force, thereby driving the screen box 4 to move backward. Due to the quick return characteristic of the crank connecting rod, the lever 26 drives the screen box 4 to move backward quickly inside the slide rail 3. When the screen box 4 moves until it collides with the collision plate 11, the screen box 4 hits the spring 12 at high speed. Before contacting the spring 12, the spring 12 is in a natural state and has no elastic potential energy. When the screen box 4 contacts the spring 12 and begins to compress the spring 12, the external force does work on the spring 12, causing the spring 12 to deform. As the degree of compression of the spring 12 increases, the elastic force of the spring 12 also gradually increases. Since the screen box 4 hits the spring 12 at high speed, it has large kinetic energy and momentum. This part of energy will also be partially converted into elastic potential energy of the spring 12 during the process of compressing the spring 12, so that the spring 12 stores a large amount of energy. When the spring 12 is compressed to a certain extent, the external force disappears or decreases to a certain extent, the elastic force of the spring 12 begins to act, and the spring 12 tries to restore its original shape to release the stored elastic potential energy. When the spring 12 resets, the limit plate 8 blocks the back of the slide hole to prevent the slide post 7 from leaving the slide hole. In this process, the elastic force of the spring 12 generates a reverse force on the screen box 4, causing the screen box 4 to gain acceleration. In this process, the shifting post 26 always slides in the strip opening 17 inside the movable frame 25 (the strip opening 17 can also ensure that the screen box 4 itself has space to move back and forth after hitting the spring 12).Thus, the screen box 4 vibrates linearly back and forth to complete the screening work, increase the vibration amplitude of the screen, and increase the passability of the material.

[0026] The working principle of a linear constant thickness vibrating screen provided by the present invention is as follows: a worker puts the items to be screened into the screen box 4, and then the worker makes the screen box 4 vibrate linearly back and forth through the linear vibrating mechanism 2. First, the worker operates the motor 6 by manipulating the control switch group 16. The output shaft of the motor 6 drives the crank 21 and the pin 1 22 to rotate as a whole. At this time, the pin 1 22 drags the rear end of the connecting rod 23 to rotate. At this time, the front end of the connecting rod 23 drives the pin 2 24 to rotate. At this time, due to the rotation restriction of the sliding plate 27 on the movable frame 25, the pin 24 can only move linearly back and forth. At this time, the front end of the connecting rod 23 rotates around the pin 2 24, the pin 1 22 rotates at the rear end of the connecting rod 23, and the movable frame 25 slides and moves backward between the two sliding plates 27 ( During this process, due to the action of the strip opening 17, the lever 26 will not be driven to move backward for a short time) until the front wall of the strip opening 17 contacts and gives the lever 26 a backward force, thereby driving the screen box 4 to move backward. Due to the quick return characteristic of the crank connecting rod, the lever 26 drives the screen box 4 to move backward quickly inside the slide rail 3. When the screen box 4 moves until it collides with the collision plate 11, the screen box 4 hits the spring 12 at high speed. Before contacting the spring 12, the spring 12 is in a natural state and has no elastic potential energy. When the screen box 4 contacts the spring 12 and begins to compress the spring 12, the external force does work on the spring 12, causing the spring 12 to deform. As the degree of compression of the spring 12 increases, the elastic force of the spring 12 also gradually increases. Since the screen box 4 hits the spring 12 at high speed, it has a large The kinetic energy and momentum of the spring 12 will be partially converted into the elastic potential energy of the spring 12 during the process of compressing the spring 12, so that the spring 12 stores a large amount of energy. When the spring 12 is compressed to a certain extent, the external force disappears or decreases to a certain extent, the elastic force of the spring 12 begins to act, and the spring 12 tries to restore its original shape and release the stored elastic potential energy. When the spring 12 resets, the limit plate 8 blocks the back of the slide hole to prevent the slide post 7 from leaving the slide hole. In this process, the elastic force of the spring 12 generates a reverse force on the screen box 4, causing the screen box 4 to gain acceleration. In this process, the dial post 26 always slides in the strip opening 17 inside the movable frame 25 (the strip opening 17 can also ensure that the screen box 4 automatically returns to its original shape after hitting the spring 12). The worker moves the body forward and backward in the space), so that the screen box 4 vibrates in a straight line forward and backward to complete the screening work, wherein the objects sieved and dropped from the screen box 4 fall into the interior of the storage box 10. In order to facilitate the workers' collection, the storage box 10 needs to be tilted. At this time, the worker operates the control switch group 16 to operate the electric cylinder 9. The telescopic end of the electric cylinder 9 pushes the lifting frame 14 upward, and the lifting frame 14 begins to gradually lift the lifting frame 13. At this time, the lifting frame 13 drives the storage box 10 to rotate around the rotating shaft 15 as the center. When it rotates to the extreme position, the upper edge of the rear end of the storage box 10 contacts the top wall of the inclined groove, and the lower edge of the front end of the storage box 10 contacts the bottom wall of the inclined groove. At the same time, during the rotation of the storage box 10, the middle part of the lifting frame 13 both slides and rotates inside the lifting frame 14.At this time, the storage box 10 is in an inclined state with the front bottom and the back high. The items inside the storage box 10 slide forward under the action of gravity and are collected by workers.

[0027] It is worth noting that the motor 6 disclosed in the above embodiment can be model 1TL0003-0EB02, and the electric cylinder 9 can be model FY020. The control switch group 16 is provided with control buttons corresponding to the motor 6 and the electric cylinder 9 and used to control their switches.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A linear constant thickness vibrating screen, comprising a frame (1), wherein the left and right inner walls of the frame (1) are both provided with slide rails (3), a screen box (4) is slidably connected between the two slide rails (3), and a tiltable container box (10) is provided at the lower end of the interior of the frame (1), characterized in that: Also included is a linear vibration mechanism (2); The linear vibration mechanism (2) comprises a movable frame (25), a shifting post (26) and a sliding plate (27). The rear end of the left side wall of the frame (1) and the rear end of the left side slide rail (3) are both provided with a slide groove. The right side of the screen box (4) is provided with a shifting post (26). The shifting post (26) passes through the two slide grooves in sequence. The upper and lower sides of the rear end of the left side wall of the frame (1) are both provided with sliding plates (27). The movable frame (25) is slidably connected between the two sliding plates (27). The left end of the shifting post (26) is slidably connected to the strip-shaped opening (17) inside the movable frame (25).

2. A linear constant thickness vibrating screen according to claim 1, characterized in that: A control switch group (16) is provided on the right side of the frame (1), and an input end of the control switch group (16) is electrically connected to an external power supply.

3. The linear constant thickness vibrating screen according to claim 2, characterized in that: The linear vibration mechanism (2) further comprises a crank (21), a first pin (22), a connecting rod (23) and a second pin (24); a motor (6) is mounted on the rear side of the frame (1); an input end of the motor (6) is electrically connected to an output end of a control switch group (16); a crank (21) is provided at the end of the output shaft of the motor (6); a first pin (22) is provided at the lower end of the left side of the crank (21); a connecting rod (23) is rotatably connected to the left end of the outer arc surface of the first pin (22); a front end of the connecting rod (23) is rotatably connected to the second pin (24); and a right side of the second pin (24) is fixedly connected to the left side of the movable frame (25).

4. The linear constant thickness vibrating screen according to claim 1, characterized in that: The invention also includes a collision plate (11), a mounting plate (5) is provided at the rear end between the left and right inner walls of the frame (1), and the middle part of the mounting plate (5) is provided with evenly distributed sliding holes. The rear side surface of the collision plate (11) is provided with evenly distributed sliding columns (7), and the sliding columns (7) are all slidably connected to the front and rear adjacent sliding holes. Evenly distributed springs (12) are provided between the collision plate (11) and the mounting plate (5), and the springs (12) are all sleeved on the outer arc surface of the adjacent sliding columns (7).

5. The linear constant thickness vibrating screen according to claim 4, characterized in that: The rear end of the outer arc surface of the slide column (7) is provided with a limiting piece (8), the limiting piece (8) is located behind the slide hole, and the diameter of the limiting piece (8) is larger than the diameter of the adjacent slide hole.

6. The linear constant thickness vibrating screen according to claim 2, characterized in that: The left and right inner walls of the frame (1) are both provided with inclined grooves in the middle, and a rotating shaft (15) is provided in the middle of the inclined grooves. The storage box (10) is rotatably connected between the two rotating shafts (15), and the thickness of the storage box (10) is smaller than the height of the inclined grooves.

7. The linear constant thickness vibrating screen according to claim 6, characterized in that: An electric cylinder (9) is placed at the lower end of the storage box (10), the input end of the electric cylinder (9) is electrically connected to the output end of the control switch group (16), a lifting frame (14) is provided at the telescopic end of the electric cylinder (9), and a lifting frame (13) is provided at the rear end of the lower side of the storage box (10), and the middle part of the lifting frame (13) is located inside the lifting frame (14).

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