Vibration shaking screen capable of being adjusted at variable speed

Abstract

The invention discloses a variable-speed adjustable vibration shaking sieve, and relates to the field of vibration shaking sieves, the variable-speed adjustable vibration shaking sieve comprises a fixed base, a sieve box is slidably connected to the fixed base, symmetrically distributed fixed frames are fixedly connected to the fixed base, a sieve plate is arranged in the sieve box, and symmetrically distributed vibrators are mounted at the bottom of the sieve box; symmetrically-distributed push plates are connected to the screen box in a sliding mode, the bottoms of the push plates make contact with the top of the screen box, and a plurality of springs are connected between the screen box and the symmetrically-distributed push plates and wound around the screen box. Through the intelligent amplitude adjusting system, the screening effect is dynamically optimized according to the material amount, and the screening or insufficient screening phenomenon is avoided; uniform distribution of the materials is ensured by the composite motion sparse frame, and the screening efficiency and precision are remarkably improved; a buffering and damping mechanism effectively reduces vibration impact, prolongs the service life of equipment, and ensures the operation stability; and efficient and automatic material screening is achieved.

Description

Technical Field

[0001] The present invention relates to the field of vibrating sieves, and particularly to a vibrating sieve with variable speed adjustment. Background Art

[0002] In the production of the glass industry, the particle size classification of raw materials is one of the key links to ensure product quality. As a commonly used mechanical screening device, the glass sand vibrating sieve is widely used in the screening of materials such as quartz sand, auxiliary raw materials, and recycled glass fragments. Its working principle is through the combined movement of vibration and shaking, so that the materials vibrate frequently and circulate and turn over on the sieve mesh, and different particle size particles are stratified under the action of gravity and inertia. Fine particles pass through the sieve holes and fall, while coarse particles remain on the sieve surface, thus completing efficient and continuous automatic sorting.

[0003] However, traditional vibrating sieves have some obvious deficiencies, especially in terms of amplitude adjustment. Traditional devices usually adopt a fixed spring pressure design and cannot dynamically adjust the amplitude according to the actual screening task volume. This limitation makes it difficult for the device to achieve the best performance when facing different task requirements: when the screening task volume is small, the fixed large amplitude may cause the materials to be thrown too high, resulting in sieve mesh blockage or particle rebound. This not only reduces the screening efficiency, but may also affect the screening accuracy, and even cause additional wear and damage to the device; when the screening task volume is large, due to insufficient amplitude, the materials cannot be fully turned over and dispersed, and the screening efficiency is significantly reduced. In addition, too low an amplitude may cause the materials to accumulate on the sieve surface, further exacerbating the screening difficulty and affecting the production progress. Summary of the Invention

[0004] In order to overcome the shortcoming that the traditional vibrating sieve cannot dynamically adjust the amplitude according to the screening task volume, the present invention provides a vibrating sieve with variable speed adjustment.

[0005] A vibrating sieve with variable speed adjustment includes a fixed base, a sieve box is slidably connected to the fixed base, symmetrically distributed fixed frames are fixedly connected to the fixed base, a sieve plate is arranged in the sieve box, symmetrically distributed vibrators are installed at the bottom of the sieve box, symmetrically distributed push plates are slidably connected to the sieve box, the bottom of the push plate is in contact with the top of the sieve box, several springs are connected between the sieve box and the symmetrically distributed push plates, and several springs are wound around the sieve box. Symmetrically distributed motors are installed on the fixed base, the output shafts of each motor are fixedly connected with hexagonal cylinders through couplings, screws are slidably connected in each hexagonal cylinder, each screw is threadedly connected to the fixed base and is rotatably connected to the adjacent push plate.

[0006] Furthermore, symmetrically distributed rotating rods are fixedly connected to the sieve plate, the symmetrically distributed rotating rods rotate on the inner wall of the sieve box, a mechanical sensor is arranged in the sieve box, a contact block is fixedly connected to the mechanical sensor, and the bottom of the sieve plate presses on the contact block.

[0007] Furthermore, a buffer frame is slidably connected to each fixing frame. The buffer frame contacts the bottom of the sieve box. Symmetrically distributed tension springs are connected between the buffer frame and the adjacent fixing frame, and the symmetrically distributed tension springs are wound around the adjacent buffer frame.

[0008] Furthermore, rubber strips are provided at the bottom of each buffer frame.

[0009] Furthermore, an electric push rod is installed on the sieve box. The telescopic part of the electric push rod is fixedly connected to a material guiding frame, and the material guiding frame slides horizontally within the sieve box.

[0010] Furthermore, a number of inclined plates are provided inside the material guiding frame.

[0011] Furthermore, a guide plate is fixedly connected to the material guiding frame, and a separating frame is slidably connected inside the guide plate.

[0012] Furthermore, symmetrically distributed wave guide bars are fixedly connected to the inner wall of the sieve box. The teeth of the two wave guide bars are staggered. Convex columns are provided on the separating frame, and the convex columns are all in contact with the teeth of the adjacent wave guide bars.

[0013] Furthermore, two independent discharge ports are provided at the bottom of the sieve box for discharging fine particles and coarse particles respectively.

[0014] The beneficial effects of the present invention are as follows: Through the intelligent amplitude adjustment system of the present invention, the screening effect is dynamically optimized according to the material quantity to avoid over-screening or under-screening; the separating frame with compound movement ensures uniform distribution of materials, significantly improving the screening efficiency and accuracy; the buffer and shock absorption mechanism effectively reduces vibration impact, prolongs the service life of the equipment, and at the same time ensures operation stability; high-efficiency and automated material screening is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 is a three-dimensional structural sectional view of components such as the fixed base, sieve box and sieve plate of the present invention.

[0017] Figure 3 is a three-dimensional structural sectional view of components such as the motor, hexagonal cylinder and push plate of the present invention.

[0018] Figure 4 is a three-dimensional structural sectional view of components such as the rotating rod, mechanical sensor and contact block of the present invention.

[0019] Figure 5 is a three-dimensional structural sectional view of components such as the fixing frame, buffer frame and tension spring of the present invention.

[0020] Figure 6This is a three-dimensional structural schematic diagram of components such as the sieve box, material guiding frame, and electric push rod of the present invention.

[0021] Figure 7 This is a three-dimensional structural sectional view of the material guiding frame and electric push rod of the present invention.

[0022] Figure 8 This is a three-dimensional structural sectional view of components such as the material guiding frame, guide plate, and material dredging frame of the present invention.

[0023] Figure 9 This is a three-dimensional structural schematic diagram of components such as the guide plate, material dredging frame, and wave guide bars of the present invention.

[0024] In the above figures: 1: fixed base, 2: sieve box, 201: fixed frame, 3: sieve plate, 4: vibrator, 5: spring, 6: motor, 7: hexagonal cylinder, 8: push plate, 9: screw, 10: rotating rod, 11: mechanical sensor, 12: contact block, 13: buffer frame, 14: tension spring, 15: material guiding frame, 16: electric push rod, 17: guide plate, 18: material dredging frame, 19: wave guide bars. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and explanations of this invention are used to explain the present invention, but do not limit the present invention.

[0026] Embodiment 1: A variable-speed adjustable vibrating screening machine, as Figures 1-3 shown, includes a fixed base 1 as the load-bearing main body, which is used to bear the weight of the entire system and provide a stable installation platform. The sieve box 2 is slidably connected to the fixed base 1, which is used to realize the up-and-down vibration of the sieve box 2 and at the same time allow the sieve box 2 to displace relative to the fixed base 1. Two independent discharge ports are provided at the bottom of the sieve box 2, which are respectively used to discharge fine particles and coarse particles.

[0027] Symmetrically distributed fixed frames 201 are fixedly connected to the fixed base 1, which are used to limit the upward movement height of the sieve box 2, prevent the sieve box 2 from detaching from the fixed base 1 due to excessive vibration, and ensure the stable operation of the equipment. A sieve plate 3 is provided inside the sieve box 2, which is used to realize the screening of granular materials. Symmetrically distributed vibrators 4 are installed at the bottom of the sieve box 2, which are used to provide the power of vibration and drive the sieve box 2 and the sieve plate 3 to perform high-frequency vibration. Symmetrically distributed push plates 8 are slidably connected to the sieve box 2. The bottom of the push plate 8 is in contact with the top of the sieve box 2, which is used to adjust the amplitude of the sieve box 2.

[0028] A number of springs 5 are connected between the sieve box 2 and the symmetrically distributed push plates 8. The number of springs 5 are all wound around the sieve box 2, used for buffering vibration and adjusting the amplitude. Symmetrically distributed motors 6 are installed on the fixed base 1. The output shafts of each motor 6 are fixedly connected with hexagonal cylinders 7 through couplings, used for providing power to adjust the amplitude of the sieve box 2. A screw 9 is slidably connected in each hexagonal cylinder 7. Each screw 9 is threadedly connected to the fixed base 1 and is rotatably connected to the adjacent push plate 8, used for dynamically adjusting the amplitude of the sieve box 2.

[0029] As Figure 4 shown, on one side of the sieve plate 3 close to the discharge port, symmetrically distributed rotating rods 10 are fixedly connected. The symmetrically distributed rotating rods 10 rotate on the inner wall of the sieve box 2. A mechanical sensor 11 is arranged in the sieve box 2, used for detecting the material pressure on the sieve plate 3 and real-time feedback of the material quantity information. A contact block 12 is fixedly connected to the mechanical sensor 11. The bottom of the sieve plate 3 presses on the contact block 12 to ensure accurate transmission of the pressure signal.

[0030] As Figure 5 shown, a buffer frame 13 is slidably connected to each fixing frame 201. The buffer frame 13 contacts the bottom of the sieve box 2, used for reducing the impact force of the sieve box 2 on the fixing frame 201 during vibration. A symmetrically distributed tension spring 14 is connected between the buffer frame 13 and the adjacent fixing frame 201. The symmetrically distributed tension springs 14 are all wound around the adjacent buffer frame 13. The tension spring 14 plays an elastic support role and provides a buffering effect when the sieve box 2 vibrates up and down to ensure stable operation of the equipment. A rubber strip is arranged at the bottom of the buffer frame 13 to further enhance the shock absorption effect, reduce noise at the same time, and improve the service life of the equipment.

[0031] As Figure 6 and Figure 7 shown, an electric push rod 16 is installed on the sieve box 2. The telescopic part of the electric push rod 16 is fixedly connected with a material guiding frame 15. The material guiding frame 15 slides horizontally in the sieve box 2 to achieve precise adjustment of the material introduction position. A number of inclined plates are arranged in the material guiding frame 15, used for dividing the outlet of the material guiding frame 15 into a number of discharge ports, which can effectively and evenly disperse the material onto the sieve plate 3, avoid local material accumulation, and improve the screening efficiency.

[0032] During use, first evenly introduce the material through the material guiding frame 15. The electric push rod 16 controls the material guiding frame 15 to move to the right, and the material is evenly spread onto the sieve plate 3 through a number of discharge ports in the material guiding frame 15. When the material introduction is completed, the electric push rod 16 drives the material guiding frame 15 to reset to the left, preparing for the next material introduction.

[0033] Start the vibrator 4, and the vibration generated by it is transmitted to the screen plate 3 through the side wall of the screen box 2 and acts on the material. The screen box 2 drives the screen plate 3 and the material to vibrate up and down at a high frequency, and the spring 5 continues to deform and reset. Under the action of gravity and inertia, the material on the screen plate 3 achieves high-frequency shaking and cyclic flipping, and particles of different particle sizes are effectively layered. Fine particles fall through the sieve holes, completing efficient and continuous automatic sorting.

[0034] When the material is spread onto the screen plate 3 through the guide frame 15, the contact block 12 presses on the mechanical sensor 11, which detects the weight of the material in real time and transmits the signal to the motor 6. According to the amount of material, the system dynamically adjusts the amplitude to optimize the screening effect: if the detected pressure is small, it means that the amount of material is small, and the mechanical sensor 11 controls the motor 6 to rotate forward, driving the screw 9 to move upward relative to the screen box 2, compressing the spring 5, thereby reducing the amplitude of the screen box 2, preventing the material from being thrown too high, and reducing the rebound phenomenon.

[0035] If the detected pressure is large, it means that the amount of material is too much. The mechanical sensor 11 controls the motor 6 to rotate in the opposite direction, driving the screw 9 to move downward relative to the screen box 2, restoring the initial length of the spring 5, increasing the amplitude of the screen box 2, and ensuring that the material can be fully turned over and dispersed, thereby significantly improving the screening efficiency. During the up and down vibration of the screen box 2, the buffer frame 13 moves up and down synchronously with the screen box 2 through a sliding connection. The tension spring 14 then deforms and resets, and under the action of its elastic force, it effectively reduces the impact force of the screen box 2 on the fixed frame 201, thereby extending the service life of the equipment.

[0036] Embodiment 2: Based on embodiment 1, Figure 8 and Figure 9 As shown, a guide plate 17 is fixedly connected to the material guide frame 15, and a sparse frame 18 is slidably connected inside the guide plate 17 for synchronously moving with the material guide frame 15, further optimizing the material dispersion effect and ensuring that the material can be evenly spread on the screen plate 3.

[0037] Symmetrically distributed wave guide bars 19 are fixed to the inner wall of the screen box 2. The teeth of the two wave guide bars 19 are staggered. Symmetrically distributed protrusions are provided on the sparse frame 18. The protrusions are in contact with the teeth of the adjacent wave guide bars 19. When the sparse frame 18 moves horizontally, the wave guide bars 19 will press against the protrusions, so that the sparse frame 18 also moves forward and backward. This movement mode combining horizontal movement with forward and backward swinging can further improve the uniformity of material dispersion, reduce blockage, and improve screening efficiency.

[0038] When the guide frame 15 moves left and right, the guide plate 17 moves synchronously with the sparse frame 18. The sparse frame 18 slides along the tooth surface of the wave guide bar 19, and moves horizontally and swings back and forth at the same time, forming a composite motion mode. This design can further evenly rake the material spread on the screen plate 3, significantly improving the screening efficiency.

[0039] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A vibration sieve with variable speed adjustment, comprising a fixed base (1), a sieve box (2) is slidably connected to the fixed base (1), symmetrically distributed fixed frames (201) are fixedly connected to the fixed base (1), a sieve plate (3) is arranged in the sieve box (2), and symmetrically distributed vibrators (4) are installed at the bottom of the sieve box (2), characterized in that: The sieve box (2) is slidably connected with symmetrically distributed push plates (8). The bottom of the push plates (8) is in contact with the top of the sieve box (2). A number of springs (5) are connected between the sieve box (2) and the symmetrically distributed push plates (8). The number of springs (5) are all wound around the sieve box (2). The fixed base (1) is installed with symmetrically distributed motors (6). The output shafts of the motors (6) are fixedly connected with hexagonal cylinders (7) through couplings. Screws (9) are slidably connected in each hexagonal cylinder (7). Each screw (9) is threadedly connected with the fixed base (1) and is rotatably connected with the adjacent push plate (8).

2. The variable-speed adjustable vibrating sieve according to claim 1, characterized in that: The sieve plate (3) is fixedly connected with symmetrically distributed rotating rods (10). The symmetrically distributed rotating rods (10) rotate on the inner wall of the sieve box (2). A mechanical sensor (11) is arranged in the sieve box (2). A contact block (12) is fixedly connected to the mechanical sensor (11). The bottom of the sieve plate (3) presses on the contact block (12).

3. The variable-speed adjustable vibrating sieve according to claim 2, wherein: A buffer frame (13) is slidably connected to each fixed frame (201). The buffer frame (13) is in contact with the bottom of the sieve box (2). Symmetrically distributed tension springs (14) are connected between the buffer frame (13) and the adjacent fixed frame (201). The symmetrically distributed tension springs (14) are all wound around the adjacent buffer frame (13).

4. A vibration sieve with variable speed adjustment according to claim 3, characterized in that: Rubber strips are provided at the bottom of each buffer frame (13).

5. The variable-speed adjustable vibrating sieve according to claim 4, characterized in that: An electric push rod (16) is installed on the sieve box (2). The telescopic part of the electric push rod (16) is fixedly connected with a material guiding frame (15). The material guiding frame (15) slides horizontally in the sieve box (2).

6. The variable-speed adjustable vibrating sieve according to claim 5, characterized in that: A number of inclined plates are arranged in the material guiding frame (15).

7. A vibration sieve with variable speed adjustment according to claim 6, characterized in that: A guide plate (17) is fixedly connected to the material guiding frame (15). A separating frame (18) is slidably connected in the guide plate (17).

8. A vibration sieve with variable speed adjustment according to claim 7, characterized in that: Symmetrically distributed wave guide strips (19) are fixedly connected to the inner wall of the sieve box (2). The teeth of the two wave guide strips (19) are staggered. Convex columns are arranged on the separating frame (18). The convex columns are all in contact with the teeth of the adjacent wave guide strip (19).

9. The variable-speed adjustable vibrating sieve according to claim 8, characterized in that: Two independent discharge ports are provided at the bottom of the sieve box (2) for discharging fine particles and coarse particles respectively.

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