A vibrating sand screening machine

Abstract

A vibrating sand screening machine, belonging to the technical field of sand screening equipment, includes a counterweight base. A support shell is fixedly installed on the upper surface of the counterweight base. The support shell is cylindrical and has a wave-shaped track on its upper surface. A carrier plate is installed above the support shell. At least three bullseye casters A are fixedly installed on the lower surface of the carrier plate. The bullseye casters A are all rolled on the wave-shaped track. A telescopic drive device is fixedly installed between the lower surface of the carrier plate and the upper surface of the counterweight base. Three uprights are fixedly installed on the upper surface of the carrier plate. A counterweight pressure plate is slidably installed between the three uprights. A locking mechanism is installed between the counterweight pressure plate and at least one of the uprights. This invention enables the material to generate complex and varied motion trajectories on the screen surface of the filter basket. This not only increases the contact frequency and time between the material and the screen, but also fully disperses the material under the action of different directions and forces, thereby completing the screening process more efficiently and significantly improving screening efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of sand screening equipment, specifically relating to a vibrating sand screening machine. Background Technology

[0002] In engineering fields such as construction, water conservancy, and mining, the vibrating sand screening machine plays a crucial role as a key piece of equipment for screening sand and gravel aggregates.

[0003] Traditional vibrating sand screening machines mainly rely on an eccentric mechanism to drive the screen surface, causing it to oscillate back and forth to achieve sand and gravel screening. However, this structural design results in a relatively simple movement trajectory of the screen surface, with materials only able to slide in a straight line or make small-range circular movements on the screen surface.

[0004] Limited movement patterns make it difficult for materials to spread sufficiently on the screen surface, easily leading to accumulation in localized areas. This accumulation is particularly pronounced when processing sand and gravel with high moisture content and high interparticle friction, severely impacting the continuity of the screening process. Furthermore, due to the single movement mode, the contact time between the material and the screen is limited, preventing some fine particles from passing through the screen openings in time. This results in low screening efficiency and insufficient grading accuracy, failing to meet the high-quality and high-efficiency production requirements of modern engineering for sand and gravel aggregates. Therefore, this paper presents another type of vibrating sand screening machine to solve the above technical problems. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a vibrating sand screening machine to solve the problem that in the prior art vibrating sand screening machine, the material is difficult to spread fully on the screen surface and is very easy to accumulate in local areas, which affects the screening effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vibrating sand screening machine includes a counterweight base, a support shell fixedly mounted on the upper surface of the counterweight base, the support shell being cylindrical and having a wave-shaped track on its upper surface, a carrier plate mounted above the support shell, at least three bullseye casters A fixedly mounted on the lower surface of the carrier plate, all of which are rotatably mounted on the wave-shaped track, a telescopic drive device fixedly mounted between the lower surface of the carrier plate and the upper surface of the counterweight base, three uprights fixedly mounted on the upper surface of the carrier plate, a counterweight pressure plate slidably mounted between the three uprights, and a locking mechanism installed between the counterweight pressure plate and at least one of the uprights.

[0008] In the above technical solution, the telescopic drive device includes a servo motor, which is fixedly installed on the upper surface of the counterweight base. The output end of the servo motor is fixedly connected to a cross shaft. The outer surface of the cross shaft is integrally formed with a fitting key, and a hollow cross shaft is slidably installed on the outer surface of the cross shaft. A keyway is opened in the inner cavity of the hollow cross shaft, and the fitting key is inserted into the keyway. A spring is fixedly installed between the hollow cross shaft and the cross shaft, and the upper surface of the hollow cross shaft is fixedly connected to the lower surface of the carrier plate.

[0009] In the above technical solution, at least three lifting plates are fixedly installed on the lower surface of the carrier plate, and bullseye casters B are fixedly installed on the side of the lifting plates near the support shell. The bullseye casters B are rolled on the outer surface of the support shell.

[0010] In the above technical solution, a positioning ring is fixedly installed at the center of the upper surface of the carrier plate.

[0011] In the above technical solution, the locking mechanism is a locking bolt, which is embedded and screwed onto the outer surface of the counterweight plate, and the end of the locking bolt near the counterweight plate is in contact with the outer surface of the upright.

[0012] The advantages of this vibrating sand screening machine compared with the prior art are as follows:

[0013] This invention, by setting up a carrier plate with bullseye casters A, a telescopic drive device, and a support shell with a wave-shaped track, can use the telescopic drive device and the bullseye casters A in conjunction with the wave-shaped track to drive the carrier plate to rotate while making undulating movements. This causes the material to generate complex and varied movement trajectories on the screen surface of the filter basket, which not only increases the frequency and time of contact between the material and the screen, but also fully disperses the material under the action of different directions and forces, thereby completing the screening process more efficiently and significantly improving screening efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the telescopic drive device of this utility model.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the cross-shaped hollow tube of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of this utility model in use.

[0019] The components include: 1. Counterweight base; 2. Support shell; 21. Wave-shaped track; 3. Carrier plate; 31. Positioning ring; 32. Bullseye caster A; 4. Telescopic drive device; 41. Servo motor; 42. Cross shaft; 421. Fitting key; 43. Hollow cross shaft; 431. Keyway; 44. Spring; 5. Upright pole; 6. Counterweight pressure plate; 61. Locking bolt; 7. Lifting plate; 71. Bullseye caster B; 8. Filter basket. Detailed Implementation

[0020] 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.

[0021] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-5 This utility model provides a technical solution:

[0022] A vibrating sand screening machine includes a counterweight base 1. A support shell 2 is fixedly installed on the upper surface of the counterweight base 1 by welding. The support shell 2 is cylindrical and has an installation opening through the front and rear. A wave-shaped track 21 is provided on the upper surface of the support shell 2. A carrier plate 3 is provided above the support shell 2. At least three bullseye casters A32 are fixedly installed on the lower surface of the carrier plate 3 by bolts. The bullseye casters A32 are all rolled on the wave-shaped track 21. A telescopic drive device 4 is fixedly installed between the lower surface of the carrier plate 3 and the upper surface of the counterweight base 1. Three uprights 5 are fixedly installed on the upper surface of the carrier plate 3 by welding. A counterweight pressure plate 6 is slidably installed between the three uprights 5. A locking mechanism is installed between the counterweight pressure plate 6 and at least one of the uprights 5. The locking mechanism is a locking bolt 61. The locking bolt 61 is embedded and screwed onto the outer surface of the counterweight pressure plate 6, and the end of the locking bolt 61 near the counterweight pressure plate 6 is in contact with the outer surface of the upright 5.

[0023] Combination Figure 1 and Figure 5As shown, in use, loosen the locking bolt 61, move the counterweight plate 6 upward to leave space for the placement of the filter basket 8, and then tighten the locking bolt 61 to fix the counterweight plate 6. Next, stack multiple filter baskets 8 with different screen diameters in descending order of screen diameter on the upper surface of the carrier plate 3. Place the sand to be screened into the top filter basket 8. Then, loosen the locking bolt 61, move the counterweight plate 6 downward to cover the top filter basket 8, and tighten the locking bolt 61. At this point, the counterweight plate 6 will fix and clamp the stacked filter baskets 8. Then, start the telescopic drive device 4 to telescopically drive... Device 4 drives the carrier plate 3 to rotate, and the bullseye universal wheel A32 rolls on the extended wave-shaped track 21. While the carrier plate 3 rotates, it makes a cyclical undulating motion (this compound motion mode creates an effect similar to "swinging + vibration"). The telescopic drive device 4, without affecting the rotation, makes a free telescopic adaptive motion with the undulating motion, so that the material produces a complex and varied motion trajectory on the screen surface of the filter basket 8. This not only increases the frequency and time of contact between the material and the screen, but also fully disperses the material under the action of different directions and forces, thereby completing the screening process more efficiently and greatly improving the screening efficiency. After screening, the filter basket 8 can be removed from the sand screening machine.

[0024] It should be noted that, in combination Figure 2 , Figure 3 and Figure 4 As shown, the telescopic drive device 4 includes a servo motor 41, which is a forward and reverse pulse motor. It is electrically connected to an external power supply and an external controller. The external controller sends pulse signals to the servo motor 41 to control its opening or closing. The servo motor 41 is fixedly installed on the upper surface of the counterweight base 1, and the output end of the servo motor 41 is fixedly connected to a cross shaft 42 through a coupling. The outer surface of the cross shaft 42 is integrally formed with a fitting key 421, and a cross hollow shaft 43 is slidably installed on the outer surface of the cross shaft 42. A keyway 431 is opened in the inner cavity of the cross hollow shaft 43, and the fitting key 421 is inserted into the keyway 431. When the servo motor 41 is started, the cross shaft 42 can drive the carrier plate 3 to rotate through the cross hollow shaft 43 by means of the cooperation between the fitting key 421 and the keyway 431.

[0025] A spring 44 is fixedly installed between the hollow cross shaft 43 and the hollow cross shaft 42, and the upper surface of the hollow cross shaft 43 is fixedly connected to the lower surface of the carrier plate 3. When the bullseye caster A32 under the carrier plate 3 rolls on the wave-shaped track 21, the sliding cooperation between the hollow cross shaft 42 and the hollow cross shaft 43 and the extensibility of the spring 44 can adapt to the undulation of the wave-shaped track 21 during rotation, thereby ensuring that the driving effect is achieved.

[0026] In addition, to enhance the stability of the carrier plate 3 during rotation, such as Figure 2As shown, at least three lifting plates 7 are fixedly installed on the lower surface of the carrier plate 3. Each lifting plate 7 is fixedly installed with a bullseye caster B71 on the side near the support shell 2. The bullseye caster B71 is rolled on the outer surface of the support shell 2. The bullseye caster B71 can roll along the outer surface of the support shell 2 while adapting to the undulating movement of the carrier plate 3. The use of at least three bullseye casters B71 and lifting plates 7 can prevent the carrier plate 3 from deviating during rotation and improve the stability of the carrier plate 3 during rotation.

[0027] Finally, to prevent the filter basket 8 from deviating from the center position of the carrier plate 3 during placement, which would impair rotational stability, a positioning ring 31 is fixedly installed at the center of the upper surface of the carrier plate 3. By placing the filter basket 8 inside the positioning ring 31, it can be ensured that it is accurately positioned at the center position of the carrier plate 3.

Claims

1. A vibrating sand screening machine, comprising a counterweight base (1), characterized in that, A support shell (2) is fixedly installed on the upper surface of the counterweight base (1). The support shell (2) is cylindrical and has a wave-shaped track (21) on its upper surface. A carrier plate (3) is installed above the support shell (2). At least three bullseye casters A (32) are fixedly installed on the lower surface of the carrier plate (3). The bullseye casters A (32) are all rolled on the wave-shaped track (21). A telescopic drive device (4) is fixedly installed between the lower surface of the carrier plate (3) and the upper surface of the counterweight base (1). Three uprights (5) are fixedly installed on the upper surface of the carrier plate (3). A counterweight pressure plate (6) is slidably installed between the three uprights (5). A locking mechanism is installed between the counterweight pressure plate (6) and at least one of the uprights (5).

2. The vibrating sand screening machine according to claim 1, characterized in that, The telescopic drive device (4) includes a servo motor (41), which is fixedly installed on the upper surface of the counterweight base (1). The output end of the servo motor (41) is fixedly connected to a cross shaft (42). The outer surface of the cross shaft (42) is integrally formed with a key (421), and a hollow cross shaft (43) is slidably installed on the outer surface of the cross shaft (42). A keyway (431) is opened in the inner cavity of the hollow cross shaft (43), and the key (421) is inserted into the keyway (431). A spring (44) is fixedly installed between the hollow cross shaft (43) and the cross shaft (42), and the upper surface of the hollow cross shaft (43) is fixedly connected to the lower surface of the carrier plate (3).

3. The vibrating sand screening machine according to claim 2, characterized in that, At least three lifting plates (7) are fixedly installed on the lower surface of the carrier plate (3). Each lifting plate (7) is fixedly installed with a bullseye caster B (71) on the side of the support shell (2). The bullseye caster B (71) is rolled on the outer surface of the support shell (2).

4. The vibrating sand screening machine according to claim 1, characterized in that, A positioning ring (31) is fixedly installed at the center of the upper surface of the carrier plate (3).

5. A vibrating sand screening machine according to claim 1, characterized in that, The locking mechanism is a locking bolt (61), which is embedded and screwed onto the outer surface of the counterweight plate (6), and the end of the locking bolt (61) near the counterweight plate (6) is in contact with the outer surface of the upright (5).

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