Novel efficient powder integral type plane rotary grading equipment

Abstract

The utility model discloses a novel efficient powder integral type plane rotary grading device 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, and the lower portion of the screen body is provided with a rotary shaft. The driving shaft is provided with a bearing sleeve through a 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] This utility model belongs to the field of screening equipment technology, specifically relating to a new type of high-efficiency integrated planar rotary grading equipment for powders. Background Technology

[0002] A grading screen is a type of equipment commonly used in industries such as mineral processing, metallurgy, building materials, and chemicals. It is primarily used to separate or classify materials according to their particle size. Its working principle involves the vibration or tilting of the screen mesh, causing the material to move across the screen surface. Smaller particles pass through the screen openings and fall, while larger particles remain on the screen surface. Grading screens can be designed with different screen mesh diameters, vibration modes, and angles to achieve efficient grading based on the characteristics of the material. Common grading screens include flat screens, cylindrical screens, and spiral screens, and are widely used for classifying and sorting materials such as ores, coal, and sand.

[0003] Currently, grading screens have a series of drawbacks and problems in practical applications. First, grading screens generally use independent transmission mechanisms, which significantly increases the overall weight of the machine and consequently raises the manufacturing cost. Independent transmission systems typically require additional structural support and multiple complex mechanical parts, increasing the complexity of the production process and the difficulty of machining. This not only prolongs the production cycle but also increases the procurement and maintenance costs of the equipment.

[0004] Secondly, the complexity of the transmission mechanism makes equipment maintenance and repair more difficult. Independent transmission systems are typically located at the center of the equipment and involve multiple critical components such as motors, reducers, belts, and gears. Failures in these components can lead to the failure of the entire transmission system. Therefore, maintenance of the transmission requires a high level of technical expertise, and troubleshooting and repair cycles are lengthy, directly increasing operating time and costs. Furthermore, the overly complex structure increases the frequency and difficulty of failures, making routine maintenance more tedious and labor-intensive.

[0005] Furthermore, the traditional grading screen's structural design is inadequate in terms of space utilization. The transmission mechanism is located in the center of the equipment, while the screen boxes are arranged on both sides, increasing the difficulty of material collection. Because the space on both sides of the screen box is occupied by the transmission system, the material flow path is restricted, and the material collection process requires additional equipment or manual intervention, thus increasing operating costs. This design also reduces the utilization rate of the equipment's operating space, limits the operator's effective management of materials, and consequently affects overall production efficiency.

[0006] Finally, traditional grading screens are overly complex, bulky, and space-consuming, making it impossible to achieve efficient material grading and collection within a limited space. The large overall design also makes transportation and installation more difficult, further increasing the overall cost. Furthermore, the bulky structure limits the flexible application of the equipment under different operating conditions, failing to meet the specific size and performance requirements of various production scenarios.

[0007] In summary, the existing design of grading screens has a series of defects and problems. These problems not only affect the performance and efficiency of the equipment, but also increase the difficulty of maintenance, operating costs and space occupation. Technological innovation and optimized design are urgently needed to improve the overall economic benefits and production efficiency. Utility Model Content

[0008] To address the problems mentioned in the background section, this invention provides a novel, high-efficiency integrated planar rotary grading device for powder materials, characterized by high screening efficiency and low overall investment cost.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a novel high-efficiency integrated planar rotary grading device for powder materials, comprising an outer frame, an outer hanger, elastic rods, and a screen body. The outer hanger is suspended inside the outer frame by the elastic rods. The screen body is installed on the outer hanger. A drive shaft is fixed to the lower part of the screen body. A bearing sleeve is installed on the drive shaft via bearings. A counterweight is installed on the bearing sleeve. The center of gravity of the counterweight is located to the side of the axis of the drive shaft. A drive motor is installed at the lower part of the screen body. The output shaft of the drive motor is connected to the bearing sleeve and drives the bearing sleeve to rotate.

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

[0011] Preferably, the counterweight includes a ring sleeve, a crank portion, and a counterweight portion. The ring sleeve is fitted onto the bearing sleeve, the inner end of the crank portion is connected to the ring sleeve, and the outer end of the crank portion is connected to the counterweight portion.

[0012] Preferably, the drive shaft includes a flange and a shaft head. The flange is fixed to the lower center of the screen body by bolts, and the bearing sleeve is mounted on the shaft head by bearings.

[0013] Preferably, the lower part of the screen body is provided with a groove, and the flange of the drive shaft is provided with a radial limiting part that is fitted into the inner side of the groove, and the outer side of the radial limiting part is clearance-fitted with the inner side of the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The design of the new high-efficiency integrated planar rotary classifier for powder materials has a series of significant advantages and effects, mainly reflected in the vibration drive system, working space layout, material collection, equipment stability, ease of maintenance and cost savings.

[0016] Firstly, the core technology of this design lies in directly driving the screen body to vibrate through the uniform circular motion of the counterweight, thus eliminating the indirect drive required by an external transmission component in traditional designs. This innovative design makes the screen body the direct driving object of the excitation force, simplifying the structure, improving power transmission efficiency, and increasing the effective screening area of ​​the screening unit. Because the vibration force acts directly on the screen body, energy conversion during the screening process is more efficient, kinematic parameters are significantly optimized, and screening efficiency is improved.

[0017] Secondly, the integrated planar rotating grading system helps to increase the height of the screen box, further enhancing the screening effect. The increased screen box height expands the screening area, thereby improving the material throughput and screening accuracy of the equipment. This not only makes the grading effect more precise but also makes the material flow during the screening process smoother, contributing to improved production efficiency. Furthermore, the design rationally reduces the occupation of working space, and the optimized layout makes material collection simpler, reducing the need for additional equipment and further saving operating space and costs.

[0018] Furthermore, the elimination of the traditional transmission mechanism makes the operation of the new high-efficiency integrated planar rotary powder classifier more stable. Reduced complexity of the transmission system means a lower probability of friction and vibration during operation, thus improving equipment stability. This simplified design also significantly reduces the likelihood of malfunctions, ensuring long-term efficient operation and minimizing production losses and maintenance costs due to downtime.

[0019] In terms of maintenance, the new high-efficiency integrated planar rotary classifier for powder materials has significant advantages over traditional equipment. By eliminating the complex structure of the transmission mechanism, overall maintenance and repair become much simpler. Maintenance personnel can troubleshoot and repair problems more quickly, reducing downtime and maintenance costs. More importantly, the simplified structure and improved stability of the equipment lower the overall maintenance difficulty, reducing reliance on highly skilled operators and further lowering operating costs.

[0020] Finally, under the same output conditions, the investment cost of the new high-efficiency integrated planar rotary classifier for powder materials is significantly reduced. Due to the elimination of the transmission components, manufacturing costs are substantially lower, and because the equipment is more stable and easier to maintain, long-term operating costs are effectively controlled. The overall cost-effectiveness of the equipment is significantly improved, making it particularly suitable for use in high-efficiency, low-cost production environments.

[0021] In summary, the new high-efficiency integrated planar rotary grading equipment for powders significantly improves screening efficiency by optimizing the transmission structure, enhancing kinematic parameters, reducing space occupation, improving equipment stability, and simplifying maintenance. At the same time, it reduces the overall investment and operating costs of the equipment, bringing higher economic benefits and competitiveness to the production process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 yes Figure 1 Enlarged view of part A;

[0024] Figure 3 This is a schematic diagram of the counterweight block in this novel embodiment.

[0025] In the diagram: 1. Outer frame; 2. Outer bracket; 3. Elastic rod; 4. Screen body; 5. Drive shaft; 6. Bearing; 7. Bearing sleeve; 8. Counterweight; 8-1. Ring part; 8-2. Crank part; 8-3. Counterweight part; 9. Drive motor; 10. Driven pulley; 11. Drive pulley. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-2 The present invention provides the following technical solution: a novel high-efficiency integrated planar rotary grading device for powder, comprising an outer frame 1, an outer hanger 2, elastic rods 3 and a sieve body 4, wherein the outer hanger 2 is suspended inside the outer frame 1 by the elastic rods 3 and the sieve body 4 is installed on the outer hanger 2.

[0028] A drive shaft 5 is fixed to the lower part of the screen body 4. A bearing sleeve 7 is mounted on the drive shaft 5 via a bearing 6. The drive shaft 5 includes a flange and a shaft head. The flange is bolted to the lower center of the screen body, and the bearing sleeve 7 is mounted on the shaft head via a bearing. A counterweight 8 is mounted on the bearing sleeve 7, with its center of gravity located to the side of the drive shaft 5's axis. The bearing sleeve 7 is mounted on the drive shaft 5 via a bearing and can rotate freely around the axis of the drive shaft 5. The counterweight 8 is mounted on the bearing sleeve 7, connected to it via a flat key, and axially locked with a round nut. This allows for the overall rotation of the counterweight 8 and the bearing sleeve 7.

[0029] A drive motor 9 is installed at the lower part of the screen 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, the driven pulley 10 is installed on the bearing sleeve 7, and the drive pulley 11 is installed on the output shaft of the drive motor 9. The drive pulley 11 and the driven pulley 10 are connected by a transmission belt.

[0030] In this embodiment, please refer to Figure 3 The counterweight 8 includes a ring sleeve 8-1, a crank portion 8-2, and a counterweight portion 8-3. The ring sleeve 8-1 is fitted onto the bearing sleeve 7. The inner end of the crank portion 8-2 is connected to the ring sleeve 8-1, and the outer end of the crank portion 8-2 is connected to the counterweight portion 8-3. To make the polarization intensity of this device adjustable, in this embodiment, the counterweight portion and the crank portion are connected in a detachable and replaceable manner. Specifically, the outer end of the crank portion is rack-shaped, with the teeth located on the upper end face. The counterweight portion has a sleeve hole, and the upper inner end face of the sleeve hole is a tooth. The sleeve hole is inserted into the crank portion with a clearance fit, and its position is adjustable. Furthermore, under the action of the counterweight's own weight, the teeth mesh to achieve self-locking. A locking screw is installed on the counterweight portion to achieve complete locking. The center position can be adjusted and the polarization intensity changed by adjusting the fixed position of the counterweight portion or by replacing the counterweight portion.

[0031] The lower part of the screen body 4 is provided with a groove, and the flange of the drive shaft is provided with a radial limiting part that is fitted inside the groove. The outer side of the radial limiting part is clearance-fitted with the inner side of the groove. This structural design allows the limiting part and the groove to bear polarization stress, avoids stress concentration on the bolts used to connect the flange and the screen body, extends the service life of the bolts, and ensures reliable connection of system components.

[0032] This grading screen eliminates the transmission components of existing double-body screens. A drive shaft is added to the center of the lower end of the screen body, connecting the screen body and drive shaft into a single unit. A counterweight is mounted on the drive shaft via a bearing sleeve, and the counterweight is bolted to the bearing sleeve. The bearing sleeve can rotate freely around the drive shaft. When the motor drives the counterweight in a uniform circular motion, the centrifugal force of the counterweight acts on the drive shaft, causing it to move in the same direction as the counterweight, with a phase difference of 180°. Since the drive shaft is fixed to the machine body, it drives the machine body in a uniform circular motion, thus meeting the technical requirements of the equipment's motion design. This equipment achieves improved motion parameters by reducing the overall weight of the machine without an independent transmission mechanism, thereby enhancing product efficiency and upgrading the product. The external frame is suspended from the outer frame by elastic rods, with the bottom plate of the entire machine approximately 450mm above the ground. During operation, the entire machine performs a uniform circular motion in a planar rotation. The screen box of the screen body is equipped with stacked screen grids of screen surface units. Different types of screens are installed on the screen surface units according to the process. When moving, the material moves on the screens to achieve material screening. In terms of screening area alone, the efficiency of this machine can be increased by 10%-20%. Without removing the entire separate transmission part, it is impossible to increase the height of the screen chamber to improve efficiency.

[0033] The sieve body is a known existing component, also known as a sieve box, which is welded together from structural components such as sieve box side plates, sieve box middle plates, and a bottom plate. The bottom plate is made from a cast steel component instead of a welded structural component, and the middle and side plates of the sieve box are connected to the bottom plate by bolts. This alternative has the same or even better effect as the present invention. Therefore, the manufacture of the cast steel bottom plate of the sieve box and the bolt connection scheme between the middle and side plates and the cast steel bottom plate are both included within the scope of this patent invention.

[0034] This product belongs to the planar rotary motion equipment. Its destructive force comes from the excitation force of the counterweight rotation. The magnitude of the excitation force is related to the following parameters.

[0035] F=Mω2r

[0036] Where M is the weight of the machine body;

[0037] ω is the radius of rotation of the body.

[0038] r is the radius of rotation of the machine.

[0039] Under this theoretical condition, there are two ways to improve product efficiency:

[0040] 1. With a reduction in weight M, appropriately increasing the rotational speed ω and the radius of rotation r can improve efficiency (without a relative increase in the excitation force borne by the screen body).

[0041] 2. With a reduction in weight M, efficiency can be improved by increasing the height of the screen chamber and the number of screening units (without a relative increase in the vibration force borne by the screen body).

[0042] Without a relative increase in the excitation force of the machine body, the kinematic parameters of the equipment, such as the increase in rotational speed and radius of rotation, as well as the overall height of the screening unit group (increased screening area), are achieved, thereby improving the working efficiency of the machine body.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel high-efficiency integrated planar rotary grading device for powder materials, comprising an outer frame (1), an outer hanger (2), elastic rods (3), and a screen body (4), wherein the outer hanger (2) is suspended inside the outer frame (1) by the elastic rods (3), and the screen body (4) is installed on the outer hanger (2), characterized in that: A drive shaft (5) is fixed to the lower part of the screen body (4). The drive shaft (5) is fitted with a bearing sleeve (7) through a bearing (6). A counterweight (8) is fitted to the bearing sleeve (7). The center of gravity of the counterweight (8) is located to the side of the axis of the drive shaft (5). A drive motor (9) is installed at the lower part of the screen 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 integral planar rotary classifier for powders according to claim 1, characterized in that: The bearing sleeve (7) is fitted with a driven pulley (10), and the output shaft of the drive motor (9) is fitted with a driving pulley (11). The driving pulley (11) and the driven pulley (10) are connected by a transmission belt.

3. The novel high-efficiency integral planar rotary classifier for powders according to claim 2, characterized in that: The counterweight (8) includes a ring sleeve (8-1), a crank (8-2), and a counterweight (8-3). The ring sleeve (8-1) is fitted onto the bearing sleeve (7). The inner end of the crank (8-2) is connected to the ring sleeve (8-1), and the outer end of the crank (8-2) is connected to the counterweight (8-3).

4. The novel high-efficiency integral planar rotary classifier for powders according to claim 3, characterized in that: The drive shaft (5) includes a flange and a shaft head. The flange is fixed to the lower center of the screen body (4) by bolts, and the bearing sleeve (7) is mounted on the shaft head by bearings.

5. The novel high-efficiency integral planar rotary classifier for powders according to claim 4, characterized in that: The lower part of the sieve body (4) is provided with a groove, and the flange of the drive shaft (5) is provided with a radial limiting part that is fitted into the inner side of the groove. The outer side of the radial limiting part is clearance-fitted with the inner side of the groove.

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