Counter-attack type deagglomeration fine screen

Abstract

The application discloses a counterattack type depolymerization fine screen, which comprises a low-amplitude frame, a high-amplitude frame, a vibration exciter, an adjustable vibration exciter mounting seat, a counterattack blind plate, a screen plate, a linear spring and a vibration isolation support. The vibration exciter is first mounted on the adjustable vibration exciter mounting seat, and the adjustable vibration exciter mounting seat is then mounted on the low-amplitude frame; the high-amplitude frame and the low-amplitude frame are connected and positioned through the linear spring, and then the screen plate is mounted on the lower layer between the high-amplitude frame and the low-amplitude frame 1, and the counterattack blind plate is mounted on the upper layer; the vibration isolation support is connected with the low-amplitude frame through a shear spring. The screen machine has the characteristics of the combined action of a large-deflection strong-vibration screen surface and a large-deflection strong-vibration counterattack plate, can realize the continuous bouncing-counterattacking-rebouncing circulation process on the sticky wet particles, and can realize the depolymerization and desorption of the sticky wet agglomerated particles. The adjustable vibration exciter girder of the screen machine realizes the adjustment of the vibration direction angle. The novel shear vibration isolation spring can constrain the screen box to perform the translation and not to perform the yaw.

Description

Technical Field

[0001] This invention relates to the field of screening machinery technology, specifically to an impact-type deagglomeration fine screen. Background Technology

[0002] Dry screening has several significant advantages over wet screening:

[0003] (1) Dry screening does not require the use of water or other liquids, saving water resources and reducing energy consumption because there is no need for heating or drying.

[0004] (2) The operation process is relatively simple, and there is no need to deal with the flow of liquid or the viscosity of materials, which reduces the complexity of operation.

[0005] (3) It will not generate wastewater or pollutant discharge, which is beneficial to environmental protection.

[0006] (4) Dry screening is suitable for some water-sensitive or easily soluble materials, such as some chemicals or specific ores.

[0007] In general, dry screening has significant advantages in energy saving, environmental protection, and operation. However, under some extreme operating conditions, existing dry screening equipment cannot successfully complete the screening task, necessitating the selection of wet screening. For example, in mineral processing, when dealing with sticky and wet materials, ordinary dry screening struggles to desorb small, sticky particles from larger particles, resulting in a large number of fine particles running off and creating a "fishhook" effect, following the larger particles to downstream mineral processing stages. Similarly, in steelmaking, to achieve a certain calorific value, it is often desirable for coal particles to have clean surfaces, which also requires deagglomeration of large particles coated with smaller ones. Existing vibrating screens rely solely on collisions between particles and between particles and the screen surface, which is insufficient to achieve deagglomeration and desorption. Summary of the Invention

[0008] The purpose of this invention is to provide an impact-type deagglomeration fine screen to solve the problems existing in the prior art. It features a combined effect of a large-deflection, high-vibration screen surface and a large-deflection, high-vibration impact plate, resulting in a screening process that differs from any existing screening equipment in terms of structure, material movement, and screening mechanism. It achieves deagglomeration and desorption of the viscous, wet particles through a continuous cycle of bounce-impact-high-speed downward movement. Due to the high-intensity impact and high-speed downward movement, the particles experience a significant impact force during screening, exceeding the liquid bridge force between particles, thus suppressing the "fishhook effect" and improving screening efficiency. Unlike previous screening machines, this equipment is equipped with a large-deflection, vibrating impact plate capable of multiple reverse impacts on the material. This causes the material to repeatedly collide and bounce between the screen surface and the impact plate, thereby deagglomerating and desorbing the viscous, wet, agglomerated particles. The vibration direction angle of the screening machine is a crucial factor affecting the screening effect. To further improve the screening effect of deagglomerated particles, an adjustable vibrator beam is designed into the equipment, enabling adjustment of the vibration direction angle. A novel shear vibration isolation spring is designed, which can constrain the screen box to perform planar motion and prevent lateral swaying, allowing the screening machine to achieve a good vibration mode. The screen box structure is a multi-beam symmetrical structure, with high overall rigidity and reliability.

[0009] To achieve the above objectives, the present invention provides the following solution:

[0010] This invention provides an impact-type deagglomeration fine screen, comprising a low-amplitude frame, a high-amplitude frame, a vibrator, an adjustable vibrator mounting base, an impact blind plate, a screen plate, a linear spring, and a vibration isolation bracket. The low-amplitude frame and the high-amplitude frame are connected by the impact blind plate, the screen plate, and the linear spring to form a screen box. The vibrator is mounted above the screen box via the adjustable vibrator mounting base. The screen frame is mounted on the vibration isolation bracket.

[0011] Preferably, the low-profile frame includes a feed chute, two side plates, an upper crossbeam, a lower crossbeam, and a discharge plate. The feed chute is installed at the rear end between the two side plates, and the discharge plate is installed at the front end between the two side plates; the upper crossbeam and the lower crossbeam are supported between the two side plates.

[0012] Preferably, the high-width frame includes two outer frames, an upper high-width crossbeam, and a lower high-width crossbeam; the upper high-width crossbeam and the lower high-width crossbeam are supported between the two outer frames.

[0013] Preferably, at least two sets of linear springs and at least one set of screen plates and impact blind plates are connected between the high-width frame and the low-width screen frame.

[0014] The present invention achieves the following beneficial technical effects compared to the prior art:

[0015] 1. The impact deagglomeration fine screen provided by the present invention has a high-intensity and large-amplitude projectile effect on sticky and wet materials, and has an impact plate to impact the particles at high speed, so that the sticky and wet materials present a "bouncing-impacting-high-speed downward-bouncing again" cyclic motion process between the screen surface and the impact plate. The screen obtains high frequency and high intensity impact throughout the screening process, achieving effective deagglomeration and desorption of fine materials.

[0016] 2. The impact deagglomeration fine screen provided by the present invention has high overall rigidity due to the use of multiple upper and lower crossbeams symmetrically supported between two side plates. It is not easy to deform during high-frequency vibration, thus improving the structural reliability.

[0017] 3. The impact deagglomeration fine screen provided by the present invention has an adjustable vibrator mounting base, which can be adjusted in position along the screen surface and in angle around the axis to realize multiple ways of vibration force.

[0018] 4. The impact deagglomeration fine screen provided by the present invention uses left and right symmetrical shear springs to connect the low-amplitude frame to the vibration isolation support, so that the low-amplitude frame has no degree of freedom of movement in the direction of the vertical side plate, which restricts the lateral swaying motion of the low-amplitude frame and avoids the occurrence of harmful vibration modes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional view of the overall structure of the present invention;

[0021] Figure 2 This is a three-dimensional view of the overall structure of the present invention;

[0022] Figure 3 This is a perspective view of the adjustable vibrator mounting base of the present invention;

[0023] Figure 4 This is a low-angle frame perspective view of the present invention;

[0024] Figure 5 This is a low-profile half-section perspective view of the frame of the present invention;

[0025] Figure 6 This is a high-resolution perspective view of the frame of the present invention;

[0026] Figure 7 This is a high-resolution half-section perspective view of the frame of the present invention;

[0027] Figure 8 This is a schematic diagram of the counter-attack blind plate of the present invention;

[0028] Figure 9 This is a perspective view of the sieve plate of the present invention;

[0029] Figure 10 This is a perspective view of the vibration isolation bracket of the present invention;

[0030] In the diagram: 1-Low amplitude frame; 2-High amplitude frame; 3-Vibrator; 4-Adjustable vibrator mounting base; 5-Impact blind plate; 6-Screen plate; 7-Linear spring; 8-Vibration isolation bracket; 9-Connecting plate; 10-Vibrator beam; 11-Connecting shaft; 12-Discharge plate; 13-Side plate; 14-Upper crossbeam; 15-Lower crossbeam; 16-Feed chute; 17-High amplitude upper crossbeam; 18-High amplitude lower crossbeam; 19-Outer frame; 20-Shear spring; 21-Bracket. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] The purpose of this invention is to provide a counter-attack deagglomeration fine sieve to solve the problems existing in the prior art.

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] This embodiment provides a counter-attack deagglomeration fine sieve, such as Figure 1 , Figure 2 As shown, the device includes a low-amplitude frame 1, a high-amplitude frame 2, a vibrator 3, an adjustable vibrator mounting base 4, an impact blind plate 5, a screen plate 6, a linear spring 7, and a vibration isolation bracket 8. The device is assembled with the low-amplitude frame 1 as the main body. The vibrator 3 is first installed on the adjustable vibrator mounting base 4, which is then installed on the low-amplitude frame 1. The high-amplitude frame 2 is connected and positioned to the low-amplitude frame 1 by the linear spring 7. The screen plate 6 is installed on the lower layer between the high-amplitude frame 2 and the low-amplitude frame 1, and the impact blind plate 5 is installed on the upper layer. Here, the impact blind plate 5 and the screen plate 6 are symmetrically installed, with their material contact surfaces facing each other. The vibration isolation bracket 8 is connected to the low-amplitude frame 1 by a shear spring 20.

[0035] Figure 3The diagram shows a perspective view of the adjustable vibrator mounting base 4, which includes a connecting plate 9, a vibrator beam 10, and a connecting shaft 11. The vibrator 3 can be mounted on the vibrator beam 10, which is mounted on the connecting shaft 11 and engages with a shaft hole, allowing the vibrator beam 10 to rotate. The connecting shaft 11 is mounted on a slide rail on the connecting plate 9, allowing the vibrator beam 10 and the connecting shaft 11 to slide back and forth.

[0036] Figure 4 , Figure 5 The figure shown is a perspective view of the low frame 1, which includes a discharge plate 12, side plates 13, upper crossbeams 14, lower crossbeams 15, and a feed chute 16. At least two upper crossbeams 14 and lower crossbeams 15 are connected between the two side plates 13 to form a screen box. The feed chute 16 is installed at one end of the screen box, and the discharge plate 12 is installed at the other end.

[0037] Figure 6 , Figure 7 The image shown is a perspective view of the elevated frame 2, which includes an upper elevated crossbeam 17, a lower elevated crossbeam 18, and an outer frame 19. At least two sets of upper elevated crossbeams 17 and lower elevated crossbeams 18 are fixedly connected between the two outer frame bodies 19.

[0038] Figure 8 and Figure 9 These are the counter-attack blind plate 5 and the sieve plate 6, respectively.

[0039] Figure 10 The vibration isolation bracket 8 includes a shear spring 20 and a bracket 21. The rubber block of the shear spring 20 is vulcanized on a steel plate, and the steel plate is fixed to the bracket 21 by bolts. The other end of the shear spring 20 is fixedly connected to the low-amplitude frame 1.

[0040] The working principle of the impact deagglomeration fine sieve provided by this invention is as follows:

[0041] The two steel plates of the shear spring are perpendicular to the ground, which minimizes the stiffness of the shear spring in the perpendicular direction. The two steel plates of the shear spring are parallel to the side plate 13, which gives the shear spring a restraining effect on the lateral direction of the screen.

[0042] The vibrator 3 is mounted on the vibrator beam 10, which is mounted on the connecting shaft 11. The vibrator beam 10 mates with the shaft hole, allowing rotation. The connecting shaft 11 is mounted on the slide rail of the connecting plate 9, allowing the vibrator beam 10 and the connecting shaft 11 to slide back and forth. By adjusting the rotation and sliding degrees of freedom, the position and direction of the vibrator can be arbitrarily adjusted. The vibrator is mounted on the low-amplitude frame 1 via an adjustable vibrator mounting base 4, exciting the low-amplitude frame 1 to vibrate. Due to the constraint of the vibration isolation bracket 8, the low-amplitude frame 1 is kept vibrating in a plane, avoiding lateral swaying. After the low-amplitude frame 1 vibrates, it drives the high-amplitude frame 2 to vibrate via a linear spring 7. The low-amplitude frame 1 and the high-amplitude frame 2 have a difference in amplitude at the same frequency, causing the impact blind plate 5 and the sieve plate 6 connected to the low-amplitude frame 1 and the high-amplitude frame 2 to undergo large-deflection, high-intensity elastic vibration. Next, material is fed into the feed chute 16. The sticky and wet material is subjected to high-frequency and high-intensity impacts between the high-intensity vibrating impact blind plate 5 and the screen plate 6, achieving deagglomeration and desorption of the sticky and wet material. Then, the desorbed fine particles pass through the screen holes of the screen plate 6, realizing dry classification of the sticky and wet material. Finally, the large particles are discharged from the discharge plate 12.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A counter-attack deagglomeration fine sieve, characterized in that: The system includes a low-amplitude frame, a high-amplitude frame, a vibrator, an adjustable vibrator mounting base, an impact blind plate, a sieve plate, linear springs, and a vibration isolation bracket. The vibrator is mounted on the adjustable vibrator mounting base, which is then mounted on the low-amplitude frame. The high-amplitude frame is connected and positioned to the low-amplitude frame via the linear springs. The sieve plate is installed at the lower layer between the high-amplitude frame and the low-amplitude frame, and the impact blind plate is installed at the upper layer. The impact blind plate and the sieve plate are symmetrically installed so that the surfaces in contact with the material are opposite each other, providing the ability to impact the material in the opposite direction. This allows the material to repeatedly collide and bounce between the sieve plate and the impact blind plate, thereby causing the sticky and wet agglomerated particles to deagglomerate and desorb. The vibration isolation bracket is connected to the low-amplitude frame via shear springs. The adjustable vibrator mounting base includes a connecting plate, a vibrator beam, and a connecting shaft. The vibrator beam is mounted on the connecting shaft and engages with the shaft hole to achieve rotation of the vibrator beam. The connecting shaft is mounted on the slide rail of the connecting plate to achieve back-and-forth sliding of the vibrator beam and the connecting shaft. The low frame includes a discharge plate, side plates, upper crossbeams, lower crossbeams, and a feed chute. At least two upper crossbeams and lower crossbeams are connected between the two side plates to form a screen box. The feed chute is installed at one end of the screen box, and the discharge plate is installed at the other end. The elevated frame includes an upper elevated crossbeam, a lower elevated crossbeam, and an outer frame. At least two sets of the upper elevated crossbeam and the lower elevated crossbeam are fixedly connected between the two outer frames.

2. The impact deagglomeration fine sieve according to claim 1, characterized in that: The vibration isolation bracket includes a shear spring and a support. The rubber block of the shear spring is vulcanized on a steel plate, and the steel plate is fixed to the support by bolts. The other end of the shear spring is fixedly connected to the low-amplitude frame. The two steel plates of the shear spring are perpendicular to the ground, so that the stiffness of the shear spring in the perpendicular direction is minimized. The two steel plates of the shear spring are parallel to the side plate, so that the shear spring has a restraining effect on the lateral movement of the screening machine.

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