Efficient screening device for gravel grading
By designing an efficient screening device for sand and gravel grading, using conveyor belts and drive motors to drive the rotation of the screen plate and screen frame, the problem that existing equipment cannot efficiently screen multiple sand and gravel at the same time is solved, and efficient and simple sand and gravel screening operation is achieved.
Patent Information
- Application Number
- CN202421546738.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing sand and gravel screening equipment cannot efficiently screen multiple sand and gravel at the same time, which is cumbersome and has low efficiency.
An efficient screening device is designed, including a flat plate, feed tank, conveyor belt, screen box and drive motor. The conveyor belt and drive motor drive the rotation of the screen plate and screen frame to realize multi-stage screening of sand and gravel.
It realizes simultaneous screening of a variety of sand and gravel, improves work efficiency, simplifies loading operations, and reduces the time and labor of manual operations.
Smart Images
Figure CN222970283U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand and gravel screening, in particular to an efficient screening device for sand and gravel grading. Background Technique
[0002] Sand and gravel refers to the loose mixture of gravel and crushed stones. Due to its good hardness and stable chemical properties, sand and gravel are often widely used as high-quality building materials and concrete raw materials in fields such as houses, roads, highways, railways, and engineering. If the crushed stones in the stone are mostly gravel, it is called gravel sand. Usually, the sand and gravel materials need to be screened according to size for use.
[0003] However, the existing sand and gravel screening equipment is relatively simple. Generally, it can only screen sand and gravel within a certain size range, and cannot screen sand and gravel in detail. The screening effect is poor. When it is necessary to screen out sands with different particle sizes, different screens need to be replaced to complete the work, which is too slow and affects the efficiency. Moreover, the existing screening equipment requires manual feeding bit by bit, which is troublesome to operate and time-consuming and laborious. Content of the Utility Model
[0004] To solve the problems in the above background, the utility model provides an efficient screening device for sand and gravel grading, which has the characteristics of being able to simultaneously screen out multiple kinds of sand and gravel, having simple feeding operation, and high working efficiency.
[0005] The utility model is realized as follows. An efficient screening device for sand and gravel grading includes a flat plate. The upper end surface of the flat plate is fixedly connected with a feeding trough. A conveyor belt is arranged inside the feeding trough. The upper end surface of the conveyor belt is fixedly connected with a plurality of equally spaced baffles. An inlet guide plate is fixedly connected inside the feeding trough and located above the conveyor belt.
[0006] The upper end surface of the flat plate is fixedly connected with a screening box located in front of the feeding trough. The upper end surface of the screening box is provided with a feeding port located below the conveyor belt. A sieve plate is fixedly connected inside the screening box. Two symmetrically distributed rotating shafts are rotatably connected inside the sieve plate. A plurality of stirring rods are fixedly connected to the outer walls of the two rotating shafts and located inside the sieve plate. The right end surface of the screening box is fixedly connected with a first guide trough communicated with the screening box.
[0007] Chute grooves are opened on the front and rear inner walls of the screening box. A sieve frame is slidably connected between the two chute grooves through sliders. Sieve holes are opened at the bottom of the sieve frame. A slot is penetrated through the front end surface of the screening box. The front end surface of the sieve frame is communicated with a second guide trough passing through the slot.
[0008] In order to drive the rotation of the rotating shaft, as an optimal solution of the high-efficiency screening device for sand grading of the present utility model, two first driving motors are installed on the front end face of the screening box, and the output ends of the two first driving motors penetrate through the front end face of the screening box and are respectively fixedly connected to one ends of the two rotating shafts.
[0009] In order to facilitate the discharge of the sand and gravel on the sieve plate, as an optimal solution of the high-efficiency screening device for sand grading of the present utility model, the height of the first material guiding groove is flush with that of the sieve plate.
[0010] In order to make the sieve frame reciprocate inside the screening box, as an optimal solution of the high-efficiency screening device for sand grading of the present utility model, a second driving motor is installed on the left end face of the screening box, the output end of the second driving motor is fixedly connected with a turntable, the other end of the turntable is rotationally connected with a movable rod through a shaft rod, and the other end of the movable rod is movably connected with the sieve frame through a connecting rod.
[0011] In order to facilitate the discharge of fine sand, as an optimal solution of the high-efficiency screening device for sand grading of the present utility model, the inner bottom surface of the screening box is an inclined surface, and a third material guiding groove communicated with the screening box is fixedly connected to the left end face of the screening box.
[0012] In order to facilitate operation, as an optimal solution of the high-efficiency screening device for sand grading of the present utility model, a control switch is fixedly connected to the right end face of the feed trough.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] In the present utility model, the output end of the first driving motor drives the rotating shaft to rotate, the rotating shaft drives the dial rod to rotate, the sand and gravel on the upper end face of the sieve plate are stirred, so that the smaller sand and gravel fall below the sieve plate, and the larger sand and gravel are discharged through the first material guiding groove;
[0015] The output end of the second driving motor drives the turntable to rotate, the shaft rod drives the movable rod to reciprocate, the connecting rod drives the sieve frame to move left and right inside the screening box, the sand and gravel inside the sieve frame vibrate, the fine sand falls from the sieve holes at the bottom of the sieve frame to the inner bottom surface of the screening box, and then is discharged through the third material guiding groove, and the smaller sand and gravel are discharged from the second material guiding groove, which is convenient for screening sand and gravel of different specifications simultaneously, with higher working efficiency and more convenient operation.
[0016] In addition, in the present utility model, the sand and gravel to be screened are discharged into the inner part of the feed trough, the sand and gravel to be screened move to the upper end face of the conveyor belt through the feed guide plate, the conveyor belt drives the baffle, and the sand and gravel to be screened are conveyed into the inner part of the screening box through the feed port, and the feeding is more convenient, time-saving and labor-saving, and the working efficiency is high. Description of the Drawings
[0017] Figure 1 This is the overall structure diagram of an efficient screening device for sand and gravel grading of the present utility model;
[0018] Figure 2 This is the overall sectional view structure diagram of the present utility model;
[0019] Figure 3 This is the partial sectional view structure diagram of the present utility model;
[0020] Figure 4 This is the partial structure diagram of the present utility model.
[0021] In the figure, 1 is a flat plate; 2 is a feeding trough; 3 is a conveyor belt; 4 is a baffle; 5 is a feeding guide plate; 6 is a screening box; 7 is a feeding port; 8 is a sieve plate; 9 is a rotating shaft; 10 is a stirring rod; 11 is a first driving motor; 12 is a first material guiding trough; 13 is a chute; 14 is a sieve frame; 15 is a sieve hole; 16 is a slider; 17 is a notch; 18 is a second material guiding trough; 19 is a second driving motor; 20 is a turntable; 21 is a shaft rod; 22 is a movable rod; 23 is a connecting rod; 24 is a third material guiding trough; 25 is a control switch. Specific embodiments
[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0024] Please refer to Figures 1-4 , an efficient screening device for sand and gravel grading, including a flat plate 1, the upper end surface of the flat plate 1 is fixedly connected with a feeding trough 2, the inside of the feeding trough 2 is provided with a conveyor belt 3, the upper end surface of the conveyor belt 3 is fixedly connected with a plurality of equally spaced baffles 4, and the inside of the feeding trough 2 is fixedly connected with a feeding guide plate 5 located above the conveyor belt 3;
[0025] The upper end face of the flat plate 1 is fixedly connected with a sieve box 6 located in front of the feeding trough 2. The upper end face of the sieve box 6 is provided with a feeding port 7 located below the conveyor belt 3. Inside the sieve box 6, a sieve plate 8 is fixedly connected. Inside the sieve plate 8, two symmetrically distributed rotating shafts 9 are rotatably connected. On the outer walls of the two rotating shafts 9, a plurality of stirring rods 10 located inside the sieve plate 8 are fixedly connected. The right end face of the sieve box 6 is fixedly connected with a first material guiding trough 12 communicating with the sieve box 6.
[0026] Sliding grooves 13 are provided on the front and rear inner walls of the sieve box 6. A sieve frame 14 is slidably connected between the two sliding grooves 13 through a slider 16. Sieve holes 15 are provided at the bottom of the sieve frame 14. A notch 17 is penetrated through the front end face of the sieve box 6. The front end face of the sieve frame 14 is communicated with a second material guiding trough 18 passing through the notch 17.
[0027] In this embodiment: The sand and gravel to be screened are discharged into the inside of the feeding trough 2. The sand and gravel to be screened move to the upper end face of the conveyor belt 3 through the feeding guide plate 5. The baffle 4 is driven by the conveyor belt 3, and the sand and gravel to be screened are conveyed into the sieve box 6 through the feeding port 7.
[0028] The sand and gravel to be screened fall onto the upper end face of the sieve plate 8. The output end of the first driving motor 11 drives the rotating shaft 9 to rotate. The stirring rod 10 is driven by the rotating shaft 9 to rotate, and the sand and gravel on the upper end face of the sieve plate 8 are stirred, so that the smaller sand and gravel fall below the sieve plate 8, and the larger sand and gravel are discharged through the first material guiding trough 12.
[0029] The smaller sand and gravel fall into the inside of the sieve frame 14. The output end of the second driving motor 19 drives the turntable 20 to rotate. The movable rod 22 is driven to reciprocate by the shaft rod 21, so that the connecting rod 23 drives the sieve frame 14 to move left and right inside the sieve box 6, and the sand and gravel inside the sieve frame 14 vibrate, so that the fine sand falls from the sieve holes 15 at the bottom of the sieve frame 14 onto the inner bottom surface of the sieve box 6, and then is discharged through the third material guiding trough 24. The smaller sand and gravel are discharged from the second material guiding trough 18.
[0030] As a technical optimization scheme of the present utility model, two first driving motors 11 are installed on the front end face of the sieve box 6. The output ends of the two first driving motors 11 penetrate through the front end face of the sieve box 6 and are respectively fixedly connected with one end of the two rotating shafts 9.
[0031] In this embodiment: The output end of the first driving motor 11 drives the rotating shaft 9 to rotate. The stirring rod 10 is driven by the rotating shaft 9 to rotate, so that the screening efficiency of the sand and gravel on the upper end face of the sieve plate 8 is higher.
[0032] As a technical optimization scheme of the present utility model, the first material guiding trough 12 is flush with the height of the sieve plate 8.
[0033] In this embodiment: It is convenient for the larger sand and gravel to be discharged from the first material guiding trough 12.
[0034] As a technical optimization solution of the present utility model, a second driving motor 19 is installed on the left end face of the sieve box 6. The output end of the second driving motor 19 is fixedly connected with a turntable 20. The other end of the turntable 20 is rotatably connected with a movable rod 22 through a shaft rod 21. The other end of the movable rod 22 is movably connected with the sieve frame 14 through a connecting rod 23.
[0035] In this embodiment: The output end of the second driving motor 19 drives the turntable 20 to rotate, and the movable rod 22 is driven to reciprocate through the shaft rod 21, facilitating the screening of the sand and gravel inside the sieve frame 14.
[0036] As a technical optimization solution of the present utility model, the inner bottom surface of the sieve box 6 is an inclined plane, and a third material guiding groove 24 communicating with the sieve box 6 is fixedly connected to the left end face of the sieve box 6.
[0037] In this embodiment: It is convenient for the smaller sand and gravel inside the sieve box 6 to be discharged.
[0038] As a technical optimization solution of the present utility model, a control switch 25 is fixedly connected to the right end face of the feed trough 2.
[0039] In this embodiment: The first driving motor 11 and the second driving motor 19 are both electrically connected to the control switch 25. The driving device is controlled through the control switch 25, making the operation of the device more convenient.
[0040] The working principle and usage process of the present utility model: First, the sand and gravel to be screened are discharged into the inside of the feed trough 2. The sand and gravel to be screened move to the upper end face of the conveyor belt 3 through the feed guiding plate 5, and then the baffle 4 is driven by the conveyor belt 3, and the sand and gravel to be screened are conveyed into the inside of the sieve box 6 through the feed port 7;
[0041] Then the sand and gravel to be screened fall onto the upper end face of the sieve plate 8. Then the output end of the first driving motor 11 drives the rotating shaft 9 to rotate, and the stirring rod 10 is driven to rotate through the rotating shaft 9, stirring the sand and gravel on the upper end face of the sieve plate 8, so that the smaller sand and gravel fall below the sieve plate 8, and the larger sand and gravel are discharged through the first material guiding groove 12. The smaller sand and gravel fall into the inside of the sieve frame 14. Then the output end of the second driving motor 19 drives the turntable 20 to rotate, and the movable rod 22 is driven to reciprocate through the shaft rod 21, so that the connecting rod 23 drives the sieve frame 14 to move left and right inside the sieve box 6, vibrating the sand and gravel inside the sieve frame 14, so that the fine sand falls from the sieve holes 15 at the bottom of the sieve frame 14 onto the inner bottom surface of the sieve box 6, and then is discharged through the third material guiding groove 24, while the smaller sand and gravel are discharged from the second material guiding groove 18.
[0042] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An efficient screening device for sand and gravel classification, comprising a flat plate (1), characterized in that: The upper end surface of the flat plate (1) is fixedly connected to a feed trough (2), a conveyor belt (3) is arranged inside the feed trough (2), a plurality of equally spaced baffles (4) are fixedly connected to the upper end surface of the conveyor belt (3), and a feed guide plate (5) located above the conveyor belt (3) is fixedly connected inside the feed trough (2); The upper end surface of the flat plate (1) is fixedly connected to a screen box (6) located in front of the feed trough (2); the upper end surface of the screen box (6) is provided with a feed port (7) located below the conveyor belt (3); a screen plate (8) is fixedly connected inside the screen box (6); two symmetrically distributed rotating shafts (9) are rotatably connected inside the screen plate (8); the outer walls of the two rotating shafts (9) are fixedly connected to a plurality of levers (10) located inside the screen plate (8); and the right end surface of the screen box (6) is fixedly connected to a first material guide trough (12) connected to the screen box (6); The front and rear inner walls of the screen box (6) are both provided with slide grooves (13), a screen frame (14) is slidably connected between the two slide grooves (13) via a slider (16), a screen hole (15) is provided at the bottom of the screen frame (14), a notch (17) is penetrated through the front end surface of the screen box (6), and the front end surface of the screen frame (14) is connected to a second material guide groove (18) passing through the notch (17).
2. The high-efficiency screening device for sand and gravel classification according to claim 1 is characterized in that: Two first drive motors (11) are installed on the front end surface of the screen box (6), and the output ends of the two first drive motors (11) both penetrate the front end surface of the screen box (6) and are fixedly connected to one end of the two rotating shafts (9) respectively.
3. The high-efficiency screening device for sand and gravel classification according to claim 1 is characterized in that: The first material guide trough (12) is flush with the height of the sieve plate (8).
4. The high-efficiency screening device for sand and gravel classification according to claim 1 is characterized in that: A second drive motor (19) is installed on the left end face of the screen box (6); a turntable (20) is fixedly connected to the output end of the second drive motor (19); the other end of the turntable (20) is rotatably connected to a movable rod (22) via an axle rod (21); the other end of the movable rod (22) is movably connected to the screen frame (14) via a connecting rod (23).
5. The high-efficiency screening device for sand and gravel classification according to claim 1 is characterized in that: The inner bottom surface of the screen box (6) is an inclined surface, and the left end surface of the screen box (6) is fixedly connected to a third material guide trough (24) which is in communication with the screen box (6).
6. The high-efficiency screening device for sand and gravel classification according to claim 1, characterized in that: A control switch (25) is fixedly connected to the right end surface of the feed trough (2).