Novel efficient powder integral type plane rotary grading equipment

Abstract

The invention discloses novel efficient powder integral type plane rotary grading equipment which comprises an outer frame, an outer hanging frame, an elastic rod piece and a screen body, the outer hanging frame is hung on the inner side of the outer frame through the elastic rod piece, the screen body is installed on the outer hanging frame, a driving shaft is fixed to the lower portion of the screen body, the driving shaft is provided with a bearing sleeve through a bearing, and the bearing sleeve is sleeved with the bearing. The bearing sleeve is provided with a balancing weight, the gravity center of the balancing weight is located on the side of the axis of the driving shaft, a driving motor is installed on the lower portion of the screen body, and an output shaft of the driving motor is connected with the bearing sleeve and drives the bearing sleeve to rotate. By optimizing a transmission structure, improving kinematics parameters, reducing occupied space, improving equipment stability and simplifying maintenance work, the integral plane rotary classifying screen remarkably improves screening efficiency, meanwhile, reduces the overall investment cost and operation cost of equipment, and brings higher economic benefits and competitiveness to the production process.

Description

Technical Field

[0001] The present invention belongs to the technical field of screening equipment, and particularly relates to a new type of high-efficiency integral planar rotary classification equipment for powdery materials. Background Art

[0002] A classification screen is a device commonly used in industries such as mineral processing, metallurgy, building materials, and chemical engineering. It is mainly used to separate or classify materials according to particle size. Its working principle is that through the vibration or inclination of the sieve mesh, the material moves on the sieve surface. According to the different sizes of particles, the smaller particles will fall through the sieve holes, while the larger particles will remain on the sieve surface. The classification screen can be designed with different sieve mesh apertures, vibration modes, and angles according to the characteristics of the material to achieve the purpose of efficient classification. Common classification screens include flat screens, cylindrical screens, spiral screens, etc., and are widely used in the classification and sorting of materials such as ores, coal, and sand and gravel.

[0003] Currently, a series of disadvantages and problems exist in the practical application of classification screens. First of all, classification screens generally adopt independent drive mechanisms, which leads to a significant increase in the overall weight of the machine, thereby pushing up the manufacturing cost of the equipment. The independent drive system usually requires additional structural support and multiple complex mechanical components, increasing the complexity of the production process and the difficulty of mechanical processing. This not only prolongs the production cycle but also raises the procurement and maintenance costs of the equipment.

[0004] Secondly, due to the complexity of the drive mechanism, the repair and maintenance of the equipment become more difficult. The independent drive system is usually located in the central position of the equipment and involves multiple important components such as motors, reducers, belts, and gears. The failure of these components may cause the entire drive system to fail. Therefore, the maintenance of the drive part requires a high technical level, and the troubleshooting and repair cycle are long, directly increasing the operation time and cost. At the same time, the overly complex structure increases the frequency and difficulty of failures, making the daily maintenance work more cumbersome and laborious.

[0005] In addition, the structural design of traditional classification screens has deficiencies in space utilization. The drive mechanism is located in the central position of the equipment, and the sieve boxes are arranged on both sides, increasing the difficulty of material collection. Since the space on both sides of the sieve box is occupied by the drive system, the flow path of the material is restricted, and additional equipment or manual intervention is required during the process of collecting the material, thereby increasing the operation cost. This design also reduces the utilization rate of the working space of the equipment, limits the effective management of materials by the operator, and thus affects the overall production efficiency.

[0006] Finally, the structure of the traditional grading sieve is too complex, with a large volume and occupying a lot of space, making it impossible to achieve efficient material grading and collection in a limited space. Due to the large overall design, the transportation and installation processes of the equipment become more difficult, further increasing the comprehensive cost of the equipment. In addition, the large structure also limits the flexible application of the equipment under different working conditions and cannot meet the special requirements of different production scenarios for the equipment size and performance.

[0007] In summary, the design of the existing grading sieve has a series of defects and problems. These problems not only affect the performance and use efficiency of the equipment, but also increase the maintenance difficulty, operation cost and space occupation of the equipment. There is an urgent need for technological innovation and optimized design to improve the overall economic efficiency and production efficiency. Summary of the Invention

[0008] To solve the problems raised in the above background technology, the present invention provides a new type of high-efficiency powder integral planar rotary grading equipment, which has the characteristics of high screening efficiency and low overall investment cost of the equipment.

[0009] To achieve the above object, the present invention provides the following technical solution: A new type of high-efficiency powder integral planar rotary grading equipment, including an outer frame, an outer hanging frame, elastic rods and a sieve body. The outer hanging frame is hoisted inside the outer frame through the elastic rods. The sieve body is installed on the outer hanging frame. A driving shaft is fixed at the lower part of the sieve body. The driving shaft is installed with a bearing sleeve through a bearing. A counterweight block is installed on the bearing sleeve. The center of gravity of the counterweight block is located on the side of the axis of the driving shaft. A driving motor is installed at the lower part of the sieve body. The output shaft of the driving motor is connected to the bearing sleeve and drives the bearing sleeve to rotate.

[0010] Preferably, a driven pulley is installed on the bearing sleeve, and a driving pulley is installed on the output shaft of the driving motor. The driving pulley and the driven pulley are connected by a transmission belt.

[0011] Preferably, the counterweight block includes a ring sleeve part, a crank part and a counterweight part. The ring sleeve part is sleeved on the bearing sleeve. The inner end of the crank part is connected to the ring sleeve part, and the outer end of the crank part is connected to the counterweight part.

[0012] Preferably, the driving shaft includes a flange part and a shaft head part. The flange part is fixed at the center position of the lower part of the sieve body by bolts. The bearing sleeve is installed on the shaft head part through a bearing.

[0013] Preferably, a groove part is provided at the lower part of the sieve body. The flange part of the driving shaft is provided with a radial limiting part that is clamped inside the groove part. The outer side surface of the radial limiting part is in clearance fit with the inner side surface of the groove part.

[0014] Compared with the prior art, the beneficial effects of the present invention are: The design of the new type of high - efficiency powder integral planar rotary classification equipment has a series of remarkable advantages and effects, mainly reflected in multiple aspects such as the vibration drive system, operation space layout, material collection, equipment stability, maintenance convenience, and cost savings.

[0015] Firstly, the technical core of this design is that through the uniform circular motion of the counterweight, the screen body is directly driven to vibrate, thus eliminating the indirect drive of the external transmission part in the traditional design. This innovative design makes the screen body the direct driving object of the exciting force, simplifies the structure, improves the power transmission efficiency, and increases the effective screening area of the screening unit. Since the vibration force directly acts on the screen body, the energy conversion during the screening process is more efficient, the kinematic parameters are significantly optimized, and the screening efficiency is improved.

[0016] Secondly, the integral planar swing classification helps to increase the height of the screen box, further enhancing the screening effect. The increase in the height of the screen box expands the screening area, thereby improving the material passing rate and screening accuracy of the equipment. This not only makes the classification effect more accurate but also makes the material flow more smoothly during the screening process, contributing to the improvement of production efficiency. In addition, the design reasonably reduces the occupation of the operation space. By optimizing the layout, the collection of materials becomes more convenient, reducing the need for additional equipment, and further saving the operation space and cost.

[0017] Furthermore, due to the elimination of the traditional transmission mechanism, the operation of the new type of high - efficiency powder integral planar rotary classification equipment becomes more stable. The reduction in the complexity of the transmission system means that the probability of problems such as friction and vibration during equipment operation is reduced, and the stability of the equipment is improved. This simplified design also greatly reduces the probability of failures, ensuring the long - term efficient operation of the equipment, thus reducing the production losses and maintenance costs caused by downtime due to failures.

[0018] In terms of maintenance, the new type of high - efficiency powder integral planar rotary classification equipment has greater advantages compared with traditional equipment. Due to the elimination of the complex structure of the transmission mechanism, the overall maintenance and repair of the equipment become more convenient. Maintenance personnel can carry out fault diagnosis and repair more quickly, reducing the downtime and maintenance costs of the equipment. More importantly, due to the simplification of the equipment structure and the improvement of stability, the overall maintenance difficulty is lower, reducing the dependence on highly skilled operators and further reducing the operating costs.

[0019] Finally, under the condition of the same output, the equipment investment cost of the new type of high - efficiency powder integral planar rotary classification equipment is significantly reduced. Due to the elimination of the transmission part, the manufacturing cost is greatly reduced, and because the equipment is more stable and easier to maintain, the costs during long - term operation are also effectively controlled. The comprehensive cost - effectiveness of the equipment is significantly improved, especially suitable for use in high - efficiency and low - cost production environments.

[0020] In summary, the new type of high-efficiency powder integral planar rotary classification equipment brings a significant improvement in screening efficiency by optimizing the drive structure, enhancing kinematic parameters, reducing space occupation, improving equipment stability and simplifying maintenance work. At the same time, it reduces the overall investment cost and operation cost of the equipment, bringing higher economic benefits and competitiveness to the production process. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 an enlarged view of part A of Figure 3 is a schematic structural diagram of the counterweight block in the embodiment of the present invention.

[0022] In the figure: 1, outer frame; 2, hanging bracket; 3, elastic rod; 4, sieve body; 5, drive shaft; 6, bearing; 7, bearing sleeve; 8, counterweight block; 8-1, ring sleeve part; 8-2, crank part; 8-3, counterweight part; 9, drive motor; 10, driven pulley; 11, driving pulley. Specific Embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-2 , the present invention provides the following technical solutions: A new type of high-efficiency powder integral planar rotary classification equipment, including an outer frame 1, a hanging bracket 2, an elastic rod 3 and a sieve body 4. The hanging bracket 2 is hoisted inside the outer frame 1 through the elastic rod 3, and the sieve body 4 is installed on the hanging bracket 2.

[0025] A drive shaft 5 is fixed to the lower part of the sieve body 4. The drive shaft 5 is installed with a bearing sleeve 7 through a bearing 6. The drive shaft 5 includes a flange part and a shaft head part. The flange part is fixed to the center position of the lower part of the sieve body through bolts, and the bearing sleeve 7 is installed on the shaft head part through a bearing. The bearing sleeve 7 is installed with a counterweight block 8, and the center of gravity of 8 is located on the side of the axis of the drive shaft 5. The bearing sleeve 7 is installed on the drive shaft 5 through a bearing. The bearing sleeve 7 can freely rotate around the axis of the drive shaft 5. The counterweight block 8 is installed on the bearing sleeve 7, connected to the bearing sleeve 7 through a flat key, and axially locked with a round nut. In this way, the overall rotation of the counterweight block 8 and the bearing sleeve 7 can be completed.

[0026] A drive motor 9 is installed at the lower part of the sieve body 4. The output shaft of the drive motor 9 is connected to the bearing sleeve 7 and drives the bearing sleeve 7 to rotate. In this embodiment, a driven pulley 10 is installed on the bearing sleeve 7, and a driving pulley 11 is installed on the output shaft of the drive motor 9. The driving pulley 11 and the driven pulley 10 are connected by a transmission belt.

[0027] In this embodiment, please refer to Figure 3 , the counterweight 8 includes a ring sleeve part 8-1, a crank part 8-2 and a counterweight part 8-3. The ring sleeve part 8-1 is sleeved on the bearing sleeve 7. The inner end of the crank part 8-2 is connected to the ring sleeve part 8-1, and the outer end of the crank part 8-2 is connected to the counterweight part 8-3. In order to make the polarization intensity of the device adjustable, in this embodiment, the counterweight part and the crank part are connected in a detachable and replaceable manner. Specifically, the outer end part of the crank part is in the shape of a rack, and the tooth part is located on the upper end face. The counterweight part has a sleeve hole, and the inner upper end face of the sleeve hole is a tooth part. The sleeve hole is inserted into the crank part in a clearance fit manner and the position is adjustable. Moreover, under the action of the self-weight of the counterweight body, the tooth parts are meshed to achieve self-locking. A locking screw is installed on the counterweight part to achieve complete locking. The central position can be adjusted and the polarization intensity can be changed by adjusting the fixed position of the counterweight part or replacing the counterweight part.

[0028] A groove part is provided at the lower part of the sieve body 4. A radial limiting part for being clamped inside the groove part is provided on the flange part of the drive shaft. The outer side surface of the radial limiting part is in clearance fit with the inner side surface of the groove part. With this structural design, the limiting part and the groove part bear the polarization stress, avoiding stress concentration on the bolts used to connect the flange part and the sieve body, prolonging the working life of the bolts and ensuring reliable connection of the system components.

[0029] This grading sieve removes the transmission part of the existing double-body sieve. A drive shaft is added at the central position at the lower end of the sieve body, so that the sieve body and the drive shaft are connected to form an integral body. A counterweight is installed on the drive shaft through a bearing sleeve, and the counterweight is bolted to the bearing sleeve. The bearing sleeve can freely rotate around the drive shaft. When the motor drives the counterweight to do uniform circular motion, the centrifugal force of the counterweight acts on the drive shaft to make the drive shaft do the same nature of motion with a phase difference of 180° from the counterweight. Since the drive shaft is fixedly connected to the machine body, the machine body can be driven to do uniform circular motion, thus meeting the technical requirements of the equipment motion design. This equipment is that under the condition of no independent transmission mechanism for the sieve body, the weight of the whole machine is reduced and the motion parameters are improved. To achieve product upgrade after product efficiency improvement. The outer hanging frame is suspended on the outer frame through elastic rods. The distance between the bottom plate of the whole machine and the ground is about 450 mm. During operation, the whole machine does uniform circular motion in a plane. A sieve grid group stacked with sieve surface units is installed in the sieve box of the sieve body. Different types of sieve meshes are stretched on the sieve surface units according to the process. During motion, the materials are driven to move on the sieve mesh to realize the screening of the materials. Just from the perspective of the screening area, the efficiency of this machine can be increased by 10%-20%. If the whole separate transmission part is not removed, it is impossible to increase the height of the sieve bin to improve the efficiency.

[0030] The sieve body is a known component, which is the sieve box and is welded by structural parts such as sieve box side plates, sieve box middle plates, and bottom plates. The bottom plate is made of a cast steel part instead of a welded structural part, and the middle side plate of the sieve box is bolted to the bottom plate. This kind of substitution has the same or even better effect as the actual invention of this time. Therefore, the production of the cast steel part of the sieve box bottom plate and the bolt connection scheme between the middle side plate and the cast steel part bottom plate are both included in the scope of the patent invention of this time.

[0031] This product belongs to a planar rotary motion device. The destructive force of the whole machine comes from the exciting force of the counterweight rotation, and the magnitude of the exciting force is associated with the following parameters.

[0032] F = Mω2r Among them, M is the weight of the machine body; ω is the rotation radius of the machine body movement; r is the rotation radius of the machine body.

[0033] Under this theoretical condition, there are two ways to improve the product efficiency: 1. When the weight M is reduced, appropriately increase the rotation speed ω and the rotation radius r to achieve efficiency improvement (the exciting force borne by the sieve body does not increase relatively).

[0034] 2. When the weight M is reduced, by increasing the height of the sieve bin and increasing the number of screening unit groups, the efficiency is improved (the exciting force borne by the sieve body does not increase relatively).

[0035] Without the relative increase in the exciting force of the machine body, the kinematic index rotation speed and rotation radius of this kind of equipment are increased, and the overall height of the screening unit group (the screening area is increased), thereby improving the working efficiency of the machine body.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of high-efficiency powder integral planar rotary classification equipment, comprising an outer frame (1), an outer hanging frame (2), elastic rods (3) and a sieve body (4), wherein the outer hanging frame (2) is hoisted inside the outer frame (1) through the elastic rods (3), and the sieve body (4) is installed on the outer hanging frame (2), and is characterized in that: A drive shaft (5) is fixed to the lower part of the sieve body (4). The drive shaft (5) is installed with a bearing sleeve (7) through a bearing (6). A counterweight (8) is installed on the bearing sleeve (7). The center of gravity of the counterweight (8) is located on the side of the axis of the drive shaft (5). A drive motor (9) is installed at the lower part of the sieve body (4). The output shaft of the drive motor (9) is connected to the bearing sleeve (7) and drives the bearing sleeve (7) to rotate.

2. The novel high-efficiency powder integral planar rotary classification equipment according to claim 1, characterized in that: A driven pulley (10) is installed on the bearing sleeve (7). A driving pulley (11) is installed on the output shaft of the drive motor (9). The driving pulley (11) and the driven pulley (10) are connected by a transmission belt.

3. The novel high-efficiency powder integral planar rotary classification equipment according to claim 2, wherein: The counterweight (8) includes a ring sleeve part (8-1), a crank part (8-2) and a counterweight part (8-3). The ring sleeve part (8-1) is sleeved on the bearing sleeve (7). The inner end of the crank part (8-2) is connected to the ring sleeve part (8-1). The outer end of the crank part (8-2) is connected to the counterweight part (8-3).

4. The novel high-efficiency powder integral planar rotary classification equipment according to claim 3, characterized in that: The drive shaft (5) includes a flange part and a shaft head part. The flange part is fixed to the center position of the lower part of the sieve body (4) by bolts. The bearing sleeve (7) is installed on the shaft head part through a bearing.

5. The novel high-efficiency powder integral planar rotary classification equipment according to claim 4, characterized in that: A groove part is provided at the lower part of the sieve body (4). A radial limiting part that is clamped inside the groove part is provided on the flange part of the drive shaft (5). The outer side surface of the radial limiting part is in clearance fit with the inner side surface of the groove part.

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