A multi-stage screening device for construction engineering sand and gravel
By combining a screening box, a filter screen, and a vibrator, the problems of filter screen wear and cumbersome replacement in existing technologies are solved, achieving efficient sand and gravel screening and crushing, and improving the practicality of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEYUAN YUANJITIAN REAL ESTATE CO LTD
- Filing Date
- 2024-05-05
- Publication Date
- 2026-07-24
AI Technical Summary
Existing multi-stage screening devices for sand and gravel used in construction projects suffer from severe wear and tear on the filter screen due to the collision between sand and gravel during long-term operation. Replacing the filter screen is also cumbersome, affecting the practicality of the screening device.
By combining a screening box, filter screen one and filter screen two, along with the design of a vibrator and buffer spring, and in conjunction with the crushing roller and crushing teeth in the crushing unit, multi-stage screening and crushing of sand and gravel can be achieved, improving screening efficiency and preventing sand and gravel particles from becoming too large.
By combining the screening box and filter screen, and with the assistance of the vibrator and buffer spring, the screening efficiency is improved, sand and gravel residue is prevented, the service life of the filter screen is extended, and the maintenance difficulty is reduced.
Smart Images
Figure CN224541824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to a multi-stage screening device for sand and gravel in building engineering. Background Technology
[0002] Screening machines are vibrating screening machines that use the relative motion between bulk materials and the screen surface to allow some particles to pass through the screen holes, separating materials such as sand, gravel, and crushed stone into different grades according to particle size. Especially in construction projects, screening devices are often used to assist in screening sand and gravel, so that different sizes of sand and gravel can be used according to needs.
[0003] In the prior art, patent document CN218340319U discloses a multi-stage screening device for sand and gravel in construction engineering, relating to the field of screening machine technology. It includes: a plate A, a set of support columns fixedly inserted into the top of the plate A, a plate B fixedly sleeved between the outer walls of the four support columns, a device body fixedly installed and inserted into the top of the plate A, a feed pipe fixedly connected to one side of the outer wall of the device body, and slide rails A on both sides of the inner wall of the device body. Due to the presence of slide rails A and B, slider A and slider B, when the filter screen needs to be replaced, rectangular frames A and B can be directly pulled out. The rectangular frames A and B are pulled out by the cooperation of slide rails A and B, slider A and slider B respectively. The sand and gravel are filtered sequentially through coarse and fine filter screens, leaving only fine sand and gravel falling into the funnel trough.
[0004] To address the issue of sand and gravel constantly colliding with the filter screen during prolonged operation of screening devices, leading to filter screen wear and cumbersome replacement, existing technologies employ screening with different sized screen plates. However, this still results in the need for frequent cleaning of the external sand and gravel from the filter screen during extended operation, thus reducing the practicality of the screening device. Utility Model Content
[0005] The purpose of this utility model is to provide a multi-stage screening device for sand and gravel in construction engineering to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] A multi-stage screening device for construction sand and gravel, suitable for screening construction sand and gravel, includes a support base; a screening unit disposed on the upper surface of the support base for screening; and a crushing unit disposed on the outer surface of the screening unit for crushing. The screening unit includes a screening component disposed on the upper surface of the support base and a vibration component disposed on the outer surface of the screening component. The crushing unit includes a drive component disposed on the outer surface of the screening unit and a crushing component disposed inside the drive component.
[0008] A further improvement of the present invention is that the screening assembly includes a screening box, the bottom of the screening box is fixedly connected to the upper surface of the support base, and a filter screen plate one and a filter screen plate two are provided inside the screening box, and baffles are provided on the outer surfaces of both the filter screen plate one and the filter screen plate two.
[0009] By adopting the above technical solution, the screening box, filter screen plate one and filter screen plate two can be used in combination to facilitate the screening of sand and gravel, and the filter screens of filter screen plate one and filter screen plate two have different diameters.
[0010] A further improvement of the present invention is that the vibration assembly includes a vibrator and a buffer spring, the upper surface of the vibrator is detachably connected to the bottom surface of the filter screen plate, the bottom of the buffer spring is fixedly connected to the inner wall of the screening box, and the upper surface of the buffer spring is detachably connected to the bottom of the filter screen plate.
[0011] A further improvement of this utility model is that: the bottom of the filter screen plate two is provided with a vibrator and a buffer spring, and the inclination angle of the baffles provided on the outer surface of the filter screen plate two and the filter screen plate one is different.
[0012] By adopting the above technical solution, the screening efficiency of filter screen plate one and filter screen plate two can be easily increased by the cooperation of the vibrator and the buffer spring.
[0013] A further improvement of the present invention is that the driving component includes a support frame, the bottom of the support frame is detachably connected to the upper surface of the screening box, and the inner wall of the support frame is detachably connected to a crushing box.
[0014] A further improvement of the present invention is that: a drive motor 1 and a drive motor 2 are detachably connected to the outer surface of the crushing box, and the drive ends of the drive motor 1 and the drive motor 2 are fixedly connected to a crushing roller that is rotatably connected to the inner wall of the crushing box.
[0015] By adopting the above technical solution, the cooperation between drive motor one and drive motor two can easily drive the crushing roller to rotate in different directions.
[0016] A further improvement of the present invention is that the crushing component includes a mounting base, the base of the mounting base is fixedly connected to the outer surface of the crushing roller, the inner wall of the mounting base is detachably connected with crushing teeth, and the mounting base and crushing teeth are provided in multiple sets and evenly distributed on the outer surface of the crushing roller.
[0017] By adopting the above technical solution, the cooperation between the mounting base and the crushing teeth can facilitate the crushing of sand and gravel.
[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0019] 1. This utility model provides a multi-stage screening device for sand and gravel in construction engineering. The device uses a screening box, a first filter screen, a second filter screen, a baffle, a vibrator, and a buffer spring to facilitate the screening of sand and gravel. During the screening process, the screened sand and gravel are discharged in a timely manner, thereby improving the screening efficiency of the screening device.
[0020] 2. This utility model provides a multi-stage screening device for sand and gravel in construction engineering. The device uses a support frame, crushing box, drive motor one, drive motor two, crushing roller, mounting base and crushing teeth to cooperate in order to crush sand and gravel, thereby preventing the sand and gravel particles from being too large and inconvenient to screen. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of this utility model;
[0022] Figure 2 This is a front structural diagram of the present invention;
[0023] Figure 3 This is a side view of the present invention.
[0024] Figure 4 This is a partial structural diagram of the screening unit of this utility model;
[0025] Figure 5 This is a partial structural diagram of the crushing unit of this utility model.
[0026] In the diagram: 1. Support base; 2. Screening unit; 21. Screening box; 22. Filter screen plate one; 23. Filter screen plate two; 24. Baffle; 25. Vibrator; 26. Buffer spring; 3. Crushing unit; 31. Support frame; 32. Crushing box; 33. Drive motor one; 34. Drive motor two; 35. Crushing roller; 36. Mounting seat; 37. Crushing teeth. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to embodiments:
[0028] Example 1
[0029] like Figure 1-5 As shown, this utility model provides a multi-stage screening device for sand and gravel in construction engineering, including a support base 1; a screening unit 2 disposed on the upper surface of the support base 1 for screening; and a crushing unit 3 disposed on the outer surface of the screening unit 2 for crushing. The screening unit 2 includes a screening component disposed on the upper surface of the support base 1 and a vibration component disposed on the outer surface of the screening component. The crushing unit 3 includes a drive component disposed on the outer surface of the screening unit 2 and a crushing component disposed inside the drive component. The screening component includes a screening box 21, the bottom of which is fixedly connected to the upper surface of the support base 1. The screening box 21 is provided with a first filter screen 22 and a second filter screen 23. Baffles 24 are provided on the outer surfaces of both the first filter screen 22 and the second filter screen 23. The vibration component includes a vibrator 25 and a buffer spring 26. The upper surface of the vibrator 25 is flush with the filter screen. The bottom of filter plate 22 is detachably connected. The bottom of the buffer spring 26 is fixedly connected to the inner wall of the screening box 21. The upper surface of the buffer spring 26 is detachably connected to the bottom of filter plate 22. The bottom of filter plate 23 is equipped with vibrator 25 and buffer spring 26. The baffles 24 on the outer surfaces of filter plate 23 and filter plate 22 have different inclination angles. When the sand and gravel crushed by the crushing unit 3 enter the outer surface of filter plate 22, the vibrator 25 is activated to drive filter plate 22 and filter plate 23 to vibrate repeatedly under the limit of the buffer spring 26, thereby assisting in the filtration of sand and gravel. The unscreened sand and gravel remain on the outer surfaces of filter plate 22 and filter plate 23. Due to the gravity of the sand and gravel, the remaining sand and gravel will move downward and finally be discharged from different directions by the baffles 24.
[0030] Example 2
[0031] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the driving assembly includes a support frame 31, the bottom of which is detachably connected to the upper surface of the screening box 21, a crushing box 32 is detachably connected to the inner wall of the support frame 31, a drive motor 33 and a drive motor 34 are detachably connected to the outer surface of the crushing box 32, and the driving ends of both the drive motor 33 and the drive motor 34 are fixedly connected to a crushing roller 35 that is rotatably connected to the inner wall of the crushing box 32. The crushing assembly includes a mounting base 36, the base of which is connected to the outer surface of the crushing roller 35. The mounting base 36 is fixedly connected to the inner wall of the crushing tooth 37, which is detachably connected. Multiple sets of the mounting base 36 and the crushing tooth 37 are evenly distributed on the outer surface of the crushing roller 35. Before using the multi-stage screening device for construction sand and gravel, the sand and gravel to be screened are first transported to the inside of the crushing box 32 by the conveyor belt device. At the same time, the drive motor 1 33 and the drive motor 2 34 are started to drive the crushing roller 35 to rotate in opposite directions, thereby assisting the crushing of the sand and gravel in conjunction with the mounting base 36 and the crushing tooth 37. The crushed sand and gravel will enter the screening box 21 from the bottom of the crushing box 32 for screening.
[0032] The working principle of the multi-stage screening device for sand and gravel in this construction project will be explained in detail below.
[0033] like Figure 1-5 As shown, before using the multi-stage screening device for construction sand and gravel, the sand and gravel to be screened are first transported to the inside of the crushing box 32 by a conveyor belt device. At the same time, the drive motor 33 and drive motor 34 are started to drive the crushing roller 35 to rotate in opposite directions, thereby assisting the crushing of the sand and gravel in conjunction with the mounting base 36 and the crushing teeth 37. The crushed sand and gravel will enter the screening box 21 from the bottom of the crushing box 32 for screening. When the sand and gravel crushed by the crushing unit 3 enters the outer surface of the filter screen plate 22, the vibrator 25 is started to drive the filter screen plate 22 and the filter screen plate 23 to vibrate repeatedly under the limit of the buffer spring 26, thereby assisting in the filtration of the sand and gravel. The unscreened sand and gravel remain on the outer surface of the filter screen plate 22 and the filter screen plate 23. Due to the gravity of the sand and gravel itself, the remaining sand and gravel will move downwards and finally be discharged from different directions by the guide of the baffle 24.
[0034] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. A multi-stage screening device for construction sand and gravel, suitable for screening construction sand and gravel, including a support base (1); Screening unit (2) for screening is provided on the upper surface of the support base (1); And a crushing unit (3) disposed on the outer surface of the screening unit (2) for crushing, characterized in that: The screening unit (2) includes a screening component disposed on the upper surface of the support base (1) and a vibration component disposed on the outer surface of the screening component. The crushing unit (3) includes a drive component disposed on the outer surface of the screening unit (2) and a crushing component disposed inside the drive component.
2. The multi-stage screening device for sand and gravel in construction engineering according to claim 1, characterized in that: The screening assembly includes a screening box (21), the bottom of which is fixedly connected to the upper surface of the support base (1). The screening box (21) is provided with a filter screen plate one (22) and a filter screen plate two (23). The outer surfaces of the filter screen plate one (22) and the filter screen plate two (23) are both provided with baffles (24).
3. The multi-stage screening device for sand and gravel in construction engineering according to claim 2, characterized in that: The vibration assembly includes a vibrator (25) and a buffer spring (26). The upper surface of the vibrator (25) is detachably connected to the bottom surface of the filter screen plate (22). The bottom of the buffer spring (26) is fixedly connected to the inner wall of the screening box (21). The upper surface of the buffer spring (26) is detachably connected to the bottom of the filter screen plate (22).
4. The multi-stage screening device for sand and gravel in construction engineering according to claim 2, characterized in that: The bottom of each filter screen plate two (23) is provided with a vibrator (25) and a buffer spring (26). The baffles (24) provided on the outer surface of the filter screen plate two (23) and the filter screen plate one (22) have different inclination angles.
5. The multi-stage screening device for sand and gravel in construction engineering according to claim 1, characterized in that: The drive assembly includes a support frame (31), the bottom of which is detachably connected to the upper surface of the screening box (21), and the inner wall of the support frame (31) is detachably connected to a crushing box (32).
6. The multi-stage screening device for sand and gravel in construction engineering according to claim 5, characterized in that: The outer surface of the crushing box (32) is detachably connected to a drive motor one (33) and a drive motor two (34). The drive ends of the drive motor one (33) and the drive motor two (34) are fixedly connected to a crushing roller (35) that is rotatably connected to the inner wall of the crushing box (32).
7. A multi-stage screening device for sand and gravel in construction engineering according to claim 6, characterized in that: The crushing assembly includes a mounting base (36), the base of which is fixedly connected to the outer surface of the crushing roller (35), and the inner wall of the mounting base (36) is detachably connected with crushing teeth (37). The mounting base (36) and the crushing teeth (37) are provided in multiple sets and are evenly distributed on the outer surface of the crushing roller (35).