CN106622943A - High-efficiency GLS probability screen - Google Patents

Abstract

The invention discloses a high-efficiency GLS probability sieve, which comprises a support device, a vibration isolation device is provided on the upper end of the support device, a screen box is provided on the vibration isolation device, and a feeding material is provided on one side of the upper end of the screen box. One side of the screen box is provided with a discharge port, and the lower end of the screen box is provided with a power device. The screen box is composed of a screen frame, a screen surface and a screen surface tensioning device. The two sides of the screen frame There are side plates on each side, and a plurality of beams are arranged between the two side plates. The beams are located at the upper end of the side plates. It is riveted with the connecting plate by ring groove rivets. In the present invention, the rubber plate is used to protect the pipe beam from material wear, and can well slow down the noise generated by the collision between the screen surface and the pipe beam during vibration. The reduction in the quantity is conducive to improving the screening probability and screening efficiency of materials, and is suitable for promotion.

Description

A High Efficiency GLS Probability Sieve

technical field

The invention relates to the field of probability sieves, in particular to a high-efficiency GLS probability sieve.

Background technique

The probability sieve is a screening machine that actively uses the principle of probability sieving. Usually the so-called probability sieve is a vibrating probability sieve, and its screen surface is vibrated in a straight line by the vibration device. This kind of probability sieve has been widely used in metallurgy, building materials, coal and other industrial sectors for the particle size classification of medium and fine-grained materials. In terms of working principle, it is also significantly different from ordinary vibrating screens. The principle of probability is used to complete the entire screening process at a very fast speed, so that the time required for material screening is only 1/3 to 1/20 of that of the flexible vibrating screen, and its processing capacity per unit screen area is higher than that of ordinary vibrating screens. The vibrating screen is 5 to 10 times larger, so it can be considered that the screening in the probability screen belongs to "fast screening", but the existing probability screen will generate a lot of noise during the screening process, and it is inconvenient to replace the screen On the surface, the most important thing is that the general probability sieve has a small screen angle and poor screening effect, resulting in low screening efficiency. Therefore, we propose a high-efficiency GLS probability sieve to solve the above problems.

Contents of the invention

Based on the technical problems existing in the background technology, the present invention proposes a high-efficiency GLS probability sieve.

A high-efficiency GLS probability screen proposed by the present invention includes a support device, the upper end of the support device is provided with a vibration isolation device, the vibration isolation device is provided with a screen box, and the upper end of the screen box is provided with a feed One side of the screen box is provided with a discharge port, and the lower end of the screen box is provided with a power device. The screen box is composed of a screen frame, a screen surface and a screen surface tensioning device. The two sides of the screen frame There are side plates on each side, and a plurality of beams are arranged between the two side plates. The beams are located at the upper end of the side plates. The upper end of the screen frame is provided with a movable cover plate, and the movable cover plate is connected with the screen frame through bolts, and spring washers are sleeved on the bolts. Covered with a rubber plate, the edges on both sides of the screen surface are fixed on the screen frame, the screen surface is composed of a woven screen, the two ends of the woven screen are tightened by the pressure plate bolts, and the inclination angle of the screen surface is 25-60°.

Preferably, in addition to the woven mesh, the screen surface is also provided with a rod sieve plate, and the direction of the rods is consistent with the movement direction of the material on the screen surface. The closer the distance between the rods is to the discharge The bigger the end.

Preferably, the power device is composed of two vibrating motors of the same type and specification, and the vibrating motors are fixedly connected to the screen box through high-strength bolts, and the two vibrating motors operate in reverse synchronously, and both vibrating motors are equipped with There are protectors.

Preferably, the vibration isolation device is symmetrically arranged around the screen box and connected to the two side plates of the screen box. The vibration isolation device is composed of a vibration damping spring, a support plate, a damping sleeve and bolts. The shock absorbing sleeve is fixed on the side plate by bolts, the shock absorbing spring is located in the shock absorbing sleeve, the support plate is fixed on the lower end of the shock absorbing spring, and the lower end of the support plate is fixed on the supporting device.

Preferably, the supporting device is composed of a steel structure bracket.

Preferably, the ratio of the sieve size to the classified particle size is 2-10.

Preferably, the woven screen is fixed on the screen frame by U-shaped bolts.

In the present invention, after the screen machine is started, two symmetrically arranged vibrating motors of the same type and specification perform synchronous reverse operation, and the exciting force generated by them is transmitted to the entire vibrating body-screen box through the vibrating body-supporting device 6 On the top, the screen box drives the screen surface to vibrate periodically, so that the materials on the screen surface make a directional jumping movement together with the screen box, during which, the materials smaller than the aperture of the screen surface fall to the lower layer through the screen holes and become undersieves. Materials larger than the pore size of the sieve surface are discharged from the discharge port after continuous jumping motion, and the screening operation is finally completed. The probability sieve adopts a large sieve surface inclination angle of 25°-60° and a large sieve hole size (the ratio of the sieve hole size to the grading particle size is 2～10) structure, adopting large inclination angle and large sieve hole size sieve surface, the speed of material moving along the sieve surface and the ability to pass through the sieve are greatly improved, which largely overcomes the accumulation of "material layers", which is conducive to the rapid removal of materials Classification and sieving, according to test statistics, when screening materials on a horizontal or slightly inclined screen surface, the average speed of material movement is generally 0.15-0.30m/s, and when using a large-inclination screen surface of 25°-60°, The average speed of feeding materials can be increased by about 3 to 4 times. Because the average speed is significantly increased, the material layer is thinned, which is beneficial to the rapid sieving of material particles. In the present invention, the rubber plate is used to protect the pipe beam from Affected by material wear, it can well slow down the noise generated by the collision between the screen surface and the pipe beam during vibration. The use of a screen surface with a large mesh size will reduce the number of difficult-to-sieve particles, which is conducive to improving the screening probability of materials and Screening efficiency, suitable for promotion.

Description of drawings

Fig. 1 is the structural representation of a kind of high-efficiency GLS probability sieve that the present invention proposes;

Fig. 2 is the sieve surface layout figure of a kind of high-efficiency GLS probability sieve that the present invention proposes;

Fig. 3 is a schematic diagram of a screen frame structure of a high-efficiency GLS probability screen proposed by the present invention.

In the figure: 1 feed inlet, 2 movable cover plate, 3 screen box, 4 discharge port, 5 vibration isolation device, 6 support device, 7 power device, 8 connecting plate, 9 side plate, 10 beam, 11 ring groove rivet .

detailed description

The present invention will be further explained below in conjunction with specific embodiments.

Referring to Figure 1-3, a high-efficiency GLS probability screen includes a support device 6, the upper end of the support device 6 is provided with a vibration isolation device 5 for shock absorption, the vibration isolation device 5 is provided with a screen box 3, and the screen box 3 One side of the upper end of the screen is provided with a feed port 1, and the material enters through the feed port 1, and one side of the screen box 3 is provided with a discharge port 4, and the lower end of the screen box 3 is provided with a power device 7 to provide power. It is composed of screen frame, screen surface and screen surface tensioning device. Both sides of the screen frame are provided with side plates 9, and a plurality of beams 10 are arranged between the two side plates 9. The beams 10 are located at the upper end of the side plates 9. It is connected with the side plate 9 through the connecting plate 8, between the beam 10 and the connecting plate 8, and between the side plate 9 and the connecting plate 8 are all riveted by ring groove rivets 11 to improve stability, and the upper end of the screen frame is equipped with a movable cover Plate 2, which can be opened, the movable cover plate 2 is connected with the screen frame by bolts, the bolts are sleeved with spring washers, the crossbeam 10 is covered with rubber plates, the edges of both sides of the screen surface are fixed on the screen frame, and the screen surface is made of braided The two ends of the woven screen are tightened by the pressure plate bolts, and the inclination angle of the screen surface is 25-60°, which can improve the screening speed of materials.

In the present invention, in addition to the woven mesh, the screen surface is also provided with a rod sieve plate, and the direction of the rods is consistent with the movement direction of the material on the screen surface. The closer the distance between the rods is to the discharge end, the larger , the power unit 7 is composed of two vibrating motors of the same type and specification, and the vibrating motors are fixedly connected with the screen box 3 through high-strength bolts, the two vibrating motors operate in reverse synchronously, and the two vibrating motors are equipped with protection The vibration isolation device 5 is symmetrically arranged around the screen box 3 and connected to the two side plates 9 of the screen box 3. The vibration isolation device 5 consists of a vibration damping spring, a support plate, a shock absorbing sleeve and Composed of bolts, the shock absorbing sleeve is fixed on the side plate by bolts, the shock absorbing spring is located in the shock absorbing sleeve, the support plate is fixed on the lower end of the shock absorbing spring, and the lower end of the support plate is fixed on the supporting device 6, through a plurality of shock absorbing The shock spring is used for shock absorption. The supporting device 6 is composed of a steel structure bracket with high stability. The ratio of the screen hole size to the grading particle size is 2-10. The woven screen is fixed on the screen frame by U-shaped bolts.

In the present invention, after the screen machine is started, two symmetrically arranged vibrating motors of the same type and specification perform synchronous reverse operation, and the exciting force generated by them is transmitted to the entire vibrating body-screen box through the vibrating body-supporting device 6 3, the screen box 3 drives the screen surface to vibrate periodically, so that the materials on the screen surface make directional jumping motion together with the screen box 3, during which, the materials smaller than the aperture of the screen surface fall to the lower layer through the screen holes and become the screen The lower material, the material larger than the aperture of the screen surface is discharged from the discharge port 4 after continuous jumping motion, and finally completes the screening operation. The probability sieve adopts a large screen surface inclination angle of 25°-60° and a large screen hole size (the size of the screen hole and the classification The particle size ratio is 2-10), and the screen surface with large inclination angle and large mesh size is adopted. The speed of material movement along the screen surface and the ability to pass through the screen are greatly improved, and the accumulation of "material layers" is largely overcome. It is conducive to the rapid classification and screening of materials. According to the test statistics, the average speed of material movement is generally 0.15-0.30m/s when screening materials on a horizontal or slightly inclined screen surface, while a large-inclination screen of 25°-60° is used. The average speed of the material on the sieve can be increased by about 3 to 4 times during the surface, because the average speed is significantly increased, which promotes the thinning of the material layer, which is beneficial to the rapid passage of the material particles through the sieve.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solutions of the present invention and its Any equivalent replacement or change of the inventive concept shall fall within the protection scope of the present invention.

Claims (7)

1. a high-efficiency GLS probability sieve, comprising a support device (6), is characterized in that, the upper end of the support device (6) is provided with a vibration isolation device (5), and the vibration isolation device (5) is provided with a sieve box (3), the upper end side of the screen box (3) is provided with a feed inlet (1), one side of the screen box (3) is provided with a discharge port (4), and the screen box (3) ) is provided with a power unit (7), the screen box (3) is composed of a screen frame, a screen surface and a screen surface tensioning device, side plates (9) are provided on both sides of the screen frame, two A plurality of cross beams (10) are arranged between the side plates (9), and the cross beams (10) are located at the upper ends of the side plates (9), and the cross beams (10) and the side plates (9) are connected by connecting plates (8) , between the beam (10) and the connecting plate (8), between the side plate (9) and the connecting plate (8) are all riveted by ring groove rivets (11), and the upper end of the screen frame is provided with a movable cover plate (2), the movable cover plate (2) is connected to the screen frame by bolts, the bolts are sleeved with spring washers, the crossbeam (10) is covered with rubber plates, and the edges on both sides of the screen surface Fixed on the screen frame, the screen surface is composed of a woven screen, the two ends of the woven screen are tightened by the pressure plate bolts, and the inclination angle of the screen surface is 25-60°. 2. A high-efficiency GLS probability sieve according to claim 1, characterized in that, besides the braided mesh, the screen surface is also provided with a rod sieve plate form, and the direction of the rods is consistent with the material on the screen surface. The direction of movement is the same, and the closer the distance between the rods is to the discharge end, the larger. 3. A kind of high-efficiency GLS probability sieve according to claim 1, is characterized in that, described power unit (7) is made up of two vibrating motors of the same type and specification, and vibrating motor passes high-strength bolt and sieve The box (3) is fixedly connected, and the two vibration motors operate in reverse synchronously, and the two vibration motors are all provided with protectors. 4. A kind of high-efficiency GLS probability screen according to claim 1, characterized in that, the vibration isolation device (5) is symmetrically arranged around the screen box (3) and connected to the two sides of the screen box (3). On a side plate (9), the vibration isolation device (5) is composed of a vibration damping spring, a support plate, a damping sleeve and a bolt, and the damping sleeve is fixed on the side plate by a bolt, and the vibration damping The spring is located in the shock absorbing sleeve, the support plate is fixed on the lower end of the shock absorbing spring, and the lower end of the support plate is fixed on the supporting device (6). 5. A high-efficiency GLS probability sieve according to claim 1, characterized in that the support device (6) is made of a steel structure bracket. 6. A high-efficiency GLS probability sieve according to claim 1, characterized in that the ratio of the sieve hole size to the grading particle size is 2-10. 7. A high-efficiency GLS probability screen according to claim 1, wherein the woven screen is fixed on the screen frame by U-shaped bolts.