Automatic discharging mechanism of circular rocking sieve

Abstract

The utility model discloses an automatic discharging mechanism of a circular rocking sieve, and relates to the related technical field of rocking sieves. The vibrating screen comprises a screen lattice, an air cylinder, an arc pipe and a rotating shaft, a discharging groove channel is fixed to the side wall of the screen lattice in a penetrating mode, the arc pipe is fixed to the position, opposite to the discharging groove channel, of the inner wall of the screen lattice, and air nozzles distributed at equal intervals are fixed to the arc face, facing the center of the screen lattice, of the arc pipe in a penetrating mode; bearing seats are further fixed to the inner walls of the portions, above and below the discharging channel, of the screen lattice, a rotating shaft is jointly and rotationally connected into the two bearing seats, and an arc-shaped first arc plate and an arc-shaped second arc plate are fixed to the periphery of the rotating shaft; an angle plate is fixed to the outer wall of the discharging channel, and an air cylinder is fixed to the angle plate. By arranging the sieve lattice, the rotating shaft, the first arc plate, the second arc plate, the air cylinder, the arc pipe and the air tap, the problems that materials cannot be screened in enough time when the discharging port of the swinging sieve is opened for a long time, and the discharging port is inconvenient to open if being closed are solved; and the swinging screen lacks an auxiliary rapid discharging function.

Description

Technical Field

[0001] The utility model belongs to the technical field related to swing screens, in particular to an automatic discharging mechanism for a circular swing screen. Background Art

[0002] The swing screen is a highly efficient screening machine specially designed to meet the needs of large-volume and high-precision screening based on the principle of artificial design. The simplest screening is screening with both hands and eyes, and the swing screen is a mechanical simulation of this. It is currently the most effective simulation of the effective principle of manual screening movement, and is suitable for all fine and ultra-fine powders and particulate materials, especially for difficult-to-handle materials. At present, in the screening method of the swing screen, most of the screen grids correspond to one screen and one discharge port for each layer of the screen. The discharge port is used to discharge materials that cannot pass through the screen, but it still has the following disadvantages in actual use:

[0003] At present, when the swing screen is screening, the screening action and the opening of the discharge port are mostly carried out synchronously, that is, the material is discharged while screening, which can easily lead to the material falling on the screen not getting sufficient screening time, and it is easy to cause some materials that can pass through the screen to be discharged from the discharge port because the screening time is too short, causing waste. Therefore, it is necessary to screen for a certain period of time before opening the discharge port to discharge the material. If the discharge port is closed, it needs to be opened manually later, which is very cumbersome, so it is necessary to be able to control the function of the discharge port switch;

[0004] Secondly, the discharging of the swing screen can only rely on its own vibration and swinging. The discharging speed is slow, and there is a lack of auxiliary fast discharging structure. The processing time is slightly longer, and the efficiency still needs to be improved. Utility Model Content

[0005] The utility model aims to provide an automatic discharging mechanism for a circular rocking screen, which solves the problems that the material cannot be screened for enough time when the discharge port of the rocking screen is open for a long time and it is inconvenient to open the closed discharge port by arranging a screen grid, a rotating shaft, an arc plate one, an arc plate two, a cylinder, an arc tube and an air nozzle; and the rocking screen lacks an auxiliary quick discharging function.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses an automatic material discharging mechanism for a circular swing screen, comprising a screen grid, a cylinder, an arc tube and a rotating shaft. A material discharging channel is fixed through the side wall of the screen grid, an arc tube is fixed at a position opposite to the material discharging channel on the inner wall of the screen grid, and air nozzles distributed equidistantly are fixed through the arc tube on the arc surface facing the center of the screen grid.

[0008] Bearing seats are also fixed on the inner walls of the sieve grids above and below the discharge chute, and a rotating shaft is connected to the two bearing seats for common rotation. The outer periphery of the rotating shaft is fixed with arc-shaped arc plates 1 and 2, and the arc plates 1 and 2 close the connection channel between the discharge chute and the sieve grid;

[0009] An angle plate is fixed on the outer wall of the discharge channel, and a cylinder is fixed on the angle plate. The piston rod of the telescopic end of the cylinder penetrates the discharge channel and extends into the interior thereof and is fixed with a U-shaped piece. An opening at one end of the U-shaped piece away from the cylinder is rotatably connected to a hinge shaft. A connecting ear is fixed on the outer arc surface of one of the arc plates, and a through groove is provided in the connecting ear, and the hinge shaft is located in the through groove.

[0010] Furthermore, a discharge pipe is fixed through the lower end of the discharge channel away from the screen grid, and a discharge port is provided at the bottom end of the discharge pipe.

[0011] Furthermore, an air pipe is fixedly penetrated at one end of the arc tube, and an end of the air pipe away from the arc tube penetrates the side wall of the screen grid and extends out.

[0012] Furthermore, ear plates distributed in a ring array are fixed to the upper edge and the lower edge of the outer wall of the sieve grid.

[0013] Furthermore, the arc plate 1 is located in the inner cavity of the screen, and the height of the arc plate 1 is greater than the inner cavity height of the discharge chute, and the end of the arc plate 1 away from the rotating shaft contacts the inner wall of the screen, and the height of the arc plate 2 is equal to the height of the discharge chute, and the end of the arc plate 2 away from the rotating shaft does not contact the inner wall of the screen.

[0014] Furthermore, a push switch is embedded and fixed on the inner wall of the screen grid on one side of the discharge chute close to the arc plate, a PLC controller is fixed on the outer wall of the screen grid, and the electrical signal output end of the push switch is electrically connected to the input end of the PLC controller, and the electrical control end of the PLC controller is electrically connected to the cylinder.

[0015] Furthermore, when the arc plate 1 and the arc plate 2 close the discharge chute, the outer arc surface of the arc plate 1 contacts and presses the press switch; when the discharge chute is connected to the screen grid, the arc plate 1 is located in the inner cavity of the screen grid, and the arc plate 2 is located in the inner cavity of the discharge chute.

[0016] The utility model has the following beneficial effects:

[0017] The utility model solves the problem that the material outlet of the swing screen is opened for a long time, the material cannot be screened for enough time, and it is inconvenient to open if the outlet is closed, by arranging a screen grid, a rotating shaft, an arc plate one, an arc plate two, and a cylinder; in the screening state, the arc plate one and the arc plate two close the connection between the discharge chute and the screen grid, so that the material is screened for a sufficient time without discharge; after the screening time is sufficient, the PLC controller sends out an instruction, the cylinder works, drives the arc plate one to rotate around the rotating shaft and move toward the inner cavity of the screen grid, and the arc plate two moves toward the discharge chute at the same time, and the connection between the discharge chute and the screen grid is opened to realize the discharge operation; after the discharge is completed, the cylinder drives the arc plate one to return to its original position, and after the arc plate one contacts the press switch, the signal is transmitted to the PLC controller, and the PLC controller controls the cylinder to stop working, so that the arc plate will not be excessively displaced.

[0018] The utility model solves the problem that the swing screen lacks an auxiliary quick discharging function by arranging an arc tube and an air nozzle; the air pipe is connected to an external air source, compressed air is input into the arc tube, and sprayed out through the air nozzle, thereby blowing the material on the screen surface in the screen grid toward the direction of the discharge chute, so that the material can be discharged quickly and the discharge efficiency can be accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0020] Figure 1 It is a three-dimensional diagram of an automatic discharging mechanism of a circular swing screen;

[0021] Figure 2 for Figure 1 Another structural diagram from another perspective;

[0022] Figure 3 This is the state diagram when the screen grid is connected to the discharge channel;

[0023] Figure 4 It is a cross-sectional view when the screen grid and the discharge channel are closed;

[0024] Figure 5 It is a cross-sectional view when the screen grid is connected with the discharge channel;

[0025] Figure 6 is the structural diagram of the rotating shaft;

[0026] Figure 7 This is the structural diagram of the cylinder.

[0027] Reference numerals:

[0028] 1. Screen grid; 101. Discharge chute; 1011. Discharge pipe; 1012. Discharge port; 102. Angle plate; 103. PLC controller; 104. Ear plate; 105. Bearing seat; 106. Push switch; 2. Cylinder; 201. U-shaped part; 202. Articulated shaft; 3. Arc tube; 301. Air nozzle; 302. Air pipe; 4. Rotating shaft; 401. Arc plate 1; 402. Arc plate 2; 403. Connecting ear; 4031. Through groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1-7 As shown, the utility model is an automatic discharging mechanism of a circular swing screen, comprising a screen grid 1, a cylinder 2, an arc tube 3 and a rotating shaft 4, a discharging channel 101 is fixed through the side wall of the screen grid 1, an arc tube 3 is fixed at a position opposite to the discharging channel 101 on the inner wall of the screen grid 1, and air nozzles 301 distributed equidistantly are fixed through the arc surface of the arc tube 3 toward the center of the screen grid 1;

[0031] The screen grid 1 is one of the conventional swing screen components and can be assembled and used in multiple pieces. An arc tube 3 is arranged inside the screen grid. The arc tube 3 is located above the screen grid. After the screening is completed, when the material needs to be discharged, the compressed air is output through the air nozzle 301 to blow the material on the screen grid toward the discharge channel 101, so as to accelerate the discharge speed.

[0032] Bearing seats 105 are also fixed on the inner walls of the sieve grid 1 above and below the discharge chute 101, and the two bearing seats 105 are connected to the rotating shaft 4 for common rotation. The outer periphery of the rotating shaft 4 is fixed with an arc-shaped arc plate 1 401 and an arc plate 2 402, and the arc plate 1 401 and the arc plate 2 402 close the connection channel between the discharge chute 101 and the sieve grid 1;

[0033] The two bearing seats 105 are used to assemble the rotating shaft 4 so that it can rotate. The arc plate 1 401 and the arc plate 2 402 outside the rotating shaft 4 will also rotate with the rotating shaft 4. During the screening operation, the arc plate 1 401 and the arc plate 2 402 will close the connection between the discharge channel 101 and the screen grid 1, so that the material cannot be discharged;

[0034] An angle plate 102 is fixed on the outer wall of the discharge channel 101, and a cylinder 2 is fixed on the angle plate 102. The piston rod of the telescopic end of the cylinder 2 penetrates the discharge channel 101 and extends into the interior thereof and is fixed with a U-shaped piece 201. The U-shaped piece 201 is rotatably connected to an articulated shaft 202 in an opening at one end away from the cylinder 2. A connecting ear 403 is fixed on the outer arc surface of the arc plate 1 401, and a through groove 4031 is provided in the connecting ear 403. The articulated shaft 202 is located in the through groove 4031.

[0035] The cylinder 2 is installed outside the discharge chute 101 using the angle plate 102, and the piston rod at the telescopic end of the cylinder 2 extends into the discharge chute 101 to control the reciprocating displacement of the U-shaped part 201, and the U-shaped part 201 is inserted into the through groove 4031 through the hinge shaft 202 to form a hinge structure with the connecting ear 403. When the cylinder 2 works to drive the piston rod to move toward the screen grid 1, the connecting ear 403 is pushed to drive the arc plate 1 401 to rotate toward the inside of the screen grid 1. At the same time, the arc plate 2 402 will move toward the discharge chute 101, thereby opening the connection between the screen grid 1 and the discharge chute 101 to form a passage for discharging.

[0036] A discharge pipe 1011 is fixed through the end of the discharge channel 101 away from the screen grid 1, and a discharge port 1012 is provided at the bottom of the discharge pipe 1011;

[0037] The material entering the discharge chute 101 eventually enters the discharge pipe 1011 and is discharged through the discharge port 1012 .

[0038] An air pipe 302 is fixed through one end of the arc tube 3, and the end of the air pipe 302 away from the arc tube 3 penetrates the side wall of the screen grid 1 and extends out; the air pipe 302 is connected to an external air source (such as an air compressor), and compressed air is input into the arc tube 3, and the compressed air is sprayed through the air nozzle 301 and blown onto the screen to assist in discharging. It is only used during discharging.

[0039] Ear plates 104 distributed in a circular array are fixed to the upper and lower edges of the outer wall of the sieve grid 1; the ear plates 104 are used to assist in connecting the upper and lower layers of the sieve grids 1.

[0040] The arc plate 1 401 is located in the inner cavity of the sieve grid 1, and the height of the arc plate 1 401 is greater than the inner cavity height of the discharge chute 101, and the end of the arc plate 1 401 away from the rotating shaft 4 contacts the inner wall of the sieve grid 1, and the height of the arc plate 2 402 is equal to the height of the discharge chute 101, and the end of the arc plate 2 402 away from the rotating shaft 4 does not contact the inner wall of the sieve grid 1;

[0041] Therefore, the arc plate 1 401 can only move in the inner cavity of the screen grid 1 , and the arc plate 2 402 can enter the discharge channel 101 .

[0042] A push switch 106 is embedded and fixed on the inner wall of the sieve grid 1 on the side of the discharge chute 101 close to the arc plate 401, and a PLC controller 103 is fixed on the outer wall of the sieve grid 1, and the electric signal output end of the push switch 106 is electrically connected to the input end of the PLC controller 103, and the electric control end of the PLC controller 103 is electrically connected to the cylinder 2;

[0043] When the arc plate 1 401 and the arc plate 2 402 close the discharge chute 101, the outer arc surface of the arc plate 1 401 contacts and presses the press switch 106; when the discharge chute 101 is connected to the sieve grid 1, the arc plate 1 401 is located in the inner cavity of the sieve grid 1, and the arc plate 2 402 is located in the inner cavity of the discharge chute 101;

[0044] After screening for a sufficient time, the PLC controller 103 sends a command, the cylinder 2 starts to work, driving the arc plate 401 to rotate around the rotating shaft 4 and move toward the inner cavity of the screen grid 1. At the same time, the arc plate 402 will move toward the discharge chute 101. At this time, the connection between the discharge chute 101 and the screen grid 1 will open to realize the discharge operation. After the discharge is completed, the cylinder 2 drives the arc plate 401 to return to its original position. After the arc plate 401 contacts the press switch 106, the signal is transmitted to the PLC controller 103. The PLC controller 103 controls the cylinder 2 to stop working and does not cause excessive displacement of the arc plate.

[0045] The specific working principle of the utility model is as follows: first, before and during screening, the arc plate 1 401 and the arc plate 2 402 will close the connection between the discharge chute 101 and the sieve grid 1, so that the material cannot be discharged; after a sufficient screening time, the PLC controller 103 issues a command, the cylinder 2 works, and the piston rod at the telescopic end of the cylinder 2 extends into the discharge chute 101 to control the reciprocating displacement of the U-shaped part 201, and the U-shaped part 201 is inserted into the through groove 4031 through the hinge shaft 202 to form a hinge structure with the connecting ear 403. When the cylinder 2 works to drive the piston rod to move toward the sieve grid 1, the connecting ear 403 is pushed to drive the arc plate 1 401 to rotate toward the inside of the sieve grid 1, and at the same time When the material is discharged, the arc plate 402 moves toward the discharge chute 101, thereby opening the connection between the screen grid 1 and the discharge chute 101 to form a passage, and the discharge operation can be carried out. The air pipe 302 is connected to the external air source, and compressed air is input into the arc tube 3. The compressed air is sprayed from the air nozzle 301 and blown onto the screen to assist in rapid discharge. The material enters the discharge chute 101 and then enters the discharge pipe 1011 and is discharged through the discharge port 1012. After the discharge is completed, the cylinder 2 drives the arc plate 401 to return to its original position. After the arc plate 401 contacts the press switch 106, the signal is transmitted to the PLC controller 103, and the PLC controller 103 controls the cylinder 2 to stop working.

[0046] The PLC controller 103 controlling the cylinder 2 is a common functional structure on the market and will not be described in detail.

[0047] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A circular swing screen automatic discharging mechanism, comprising a screen grid (1), a cylinder (2), an arc tube (3) and a rotating shaft (4), characterized in that: A material discharge channel (101) is fixed through the side wall of the screen grid (1), an arc tube (3) is fixed at a position on the inner wall of the screen grid (1) opposite to the material discharge channel (101), and air nozzles (301) distributed equidistantly are fixed through the arc surface of the arc tube (3) facing the center of the screen grid (1); Bearing seats (105) are also fixed on the inner walls of the sieve grid (1) above and below the discharge chute (101), and a rotating shaft (4) is rotatably connected in the two bearing seats (105). The outer periphery of the rotating shaft (4) is fixed with an arc-shaped arc plate 1 (401) and an arc plate 2 (402), and the arc plate 1 (401) and the arc plate 2 (402) close the connection channel between the discharge chute (101) and the sieve grid (1); An angle plate (102) is fixed on the outer wall of the discharge channel (101), and a cylinder (2) is fixed on the angle plate (102); a piston rod at the telescopic end of the cylinder (2) penetrates the discharge channel (101) and extends into the interior thereof and is fixed with a U-shaped part (201); and a hinge shaft (202) is rotatably connected in an opening at one end of the U-shaped part (201) away from the cylinder (2); a connecting ear (403) is fixed on the outer arc surface of the arc plate (401), and a through groove (4031) is provided in the connecting ear (403); and the hinge shaft (202) is located in the through groove (4031).

2. The automatic discharging mechanism of a circular swing screen according to claim 1, characterized in that: A discharge pipe (1011) is fixedly passed through the lower end of the discharge channel (101) away from the screen grid (1), and a discharge port (1012) is provided at the bottom end of the discharge pipe (1011).

3. The automatic discharging mechanism of a circular swing screen according to claim 1 is characterized by: An air pipe (302) is fixedly passed through one end of the arc tube (3), and an end of the air pipe (302) away from the arc tube (3) passes through the side wall of the screen grid (1) and extends out.

4. The automatic discharging mechanism of a circular swing screen according to claim 1, characterized in that: Ear plates (104) distributed in a circular array are fixed to the upper edge and the lower edge of the outer wall of the screen grid (1).

5. The automatic discharging mechanism of a circular swing screen according to claim 1 is characterized by: The arc plate 1 (401) is located in the inner cavity of the sieve grid (1), and the height of the arc plate 1 (401) is greater than the inner cavity height of the discharge chute (101), and the end of the arc plate 1 (401) away from the rotating shaft (4) contacts the inner wall of the sieve grid (1), and the height of the arc plate 2 (402) is equal to the height of the discharge chute (101), and the end of the arc plate 2 (402) away from the rotating shaft (4) does not contact the inner wall of the sieve grid (1).

6. The automatic discharging mechanism of a circular swing screen according to claim 1, characterized in that: A push switch (106) is embedded and fixed on the inner wall of the screen grid (1) on the side of the discharge chute (101) close to the arc plate (401), and a PLC controller (103) is fixed on the outer wall of the screen grid (1), and the electrical signal output end of the push switch (106) is electrically connected to the input end of the PLC controller (103), and the electrical control end of the PLC controller (103) is electrically connected to the cylinder (2).

7. The automatic discharging mechanism of a circular swing screen according to claim 6, characterized in that: When the arc plate 1 (401) and the arc plate 2 (402) close the discharge chute (101), the outer arc surface of the arc plate 1 (401) contacts and presses the press switch (106); when the discharge chute (101) is connected to the sieve grid (1), the arc plate 1 (401) is located in the inner cavity of the sieve grid (1), and the arc plate 2 (402) is located in the inner cavity of the discharge chute (101).

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