Sand and stone screening machine for building construction
By designing multiple screening components and dust removal components, the problems of low efficiency and uneven particle distribution caused by uneven amplitude in existing sand and gravel screening machines have been solved, achieving efficient screening and dust removal, and improving the overall performance of sand and gravel screening machines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN TONGHUA CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-07-14
AI Technical Summary
Existing sand and gravel screening machines used in construction have uneven amplitude distribution during the screening process, resulting in reduced screening efficiency and poor particle size distribution uniformity. Especially when processing large quantities of sand and gravel materials, the materials tend to accumulate in local areas of the screen surface, forming a stagnation phenomenon, which affects the uniformity of particle size distribution of the final product.
The design employs multiple screening and dust removal components, including a servo motor-driven filter cartridge, threaded guide plate, vibrating motor, scraper, air pump, and suction pipe, to achieve efficient screening and dust removal, prevent sand and gravel accumulation, ensure unobstructed screening channels, and improve screening efficiency and particle distribution uniformity by high-frequency vibration and airflow to disperse fine particles.
It significantly improves the screening efficiency of sand and gravel, prevents material accumulation, ensures uniform particle distribution, effectively reduces dust emission, and enhances screening effect and product quality.
Smart Images
Figure CN224486630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand and gravel screening machine technology, and more specifically, to a sand and gravel screening machine for construction. Background Technology
[0002] In the construction process, sand and gravel are key materials for concrete, mortar and foundation engineering. In order to ensure the precise requirements of aggregate gradation for various building structures, sand and gravel raw materials must be efficiently and accurately graded and screened to avoid the impact of excessively large or small particles on strength or workability.
[0003] A search revealed that Chinese patent CN222447192U discloses "a sand and gravel screening machine for construction, including a base, a screening box on the upper surface of the base, a screen slidably connected inside the screening box via multiple inclined limiting grooves, multiple feed pipes corresponding to the screens connected to the outer wall of the screening box, a vibration mechanism on the left side of the screening box including a motor, the motor being mounted on the left end of the base, the output end of the motor passing through the base and fixedly connected to a turntable, an eccentric shaft fixedly connected to the right end of the turntable, and a drive rod movably connected to the outer wall of the eccentric shaft via bearings. By installing multiple screens of different apertures inside the screening box and setting multiple feed ports matching the screens on the outer wall of the screening box, it is convenient to classify sand and gravel of different sizes at one time, achieving the goal of screening out multiple grades of sand and gravel of different particle sizes at one time with high working efficiency." However, the following defects still exist:
[0004] During the screening of sand and gravel, the uneven amplitude distribution of this device leads to reduced screening efficiency and poor particle size distribution. This is especially problematic when processing large quantities of sand and gravel, as the uneven distribution of vibration energy causes material to accumulate in localized areas of the screen surface, resulting in stagnation. This not only reduces screening efficiency but also affects the particle size distribution uniformity of the final product. Therefore, a sand and gravel screening machine for construction is proposed. Utility Model Content
[0005] The purpose of this invention is to address the problem that uneven amplitude distribution during sand and gravel screening leads to reduced screening efficiency and poor particle size uniformity. This is particularly problematic when processing large quantities of sand and gravel, where uneven vibration energy distribution causes material to accumulate in localized areas of the screen surface, resulting in stagnation. This not only reduces screening efficiency but also affects the particle size uniformity of the final product. Therefore, this invention proposes a sand and gravel screening machine for construction applications.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] The present invention is as follows: a sand and gravel screening machine for construction, including a base, a screening component for multiple screening of sand and gravel is provided on the top of the base, and a dust removal component for cleaning the sand and gravel screening is provided on the top of the base.
[0008] The screening assembly includes a fixed tank fixedly connected to the top of the base. A conveying frame is fixedly connected to the outer wall of the fixed tank. A cover plate is hinged to the top of the conveying frame. Fixed frames are fixedly connected to opposite ends of the fixed tank. A first servo motor is bolted to one side of the fixed frame. A filter cylinder is coaxially mounted on the output end of the first servo motor. The filter cylinder is rotatably connected to the inner wall of the fixed frame. A fixed column is rotatably connected to the inner wall of the filter cylinder. A threaded guide plate is fixedly connected to the outer wall of the fixed column. A scraper is fixedly connected to the inner wall of the fixed tank. A vibration motor is bolted to the bottom of the base. A discharge plate is fixedly connected to one end of both the fixed tank and the filter cylinder.
[0009] As a preferred technical solution of this utility model, the dust removal component includes a connecting chamber fixedly connected to the outer wall of the fixed tank, a dust suction pipe fixedly connected to the top of the connecting chamber, an air pump provided at the end of the dust suction pipe away from the fixed tank, and a waste frame provided at the output end of the air pump.
[0010] As a preferred technical solution of this utility model, an air outlet chamber is fixedly connected to one end of the fixed tank. The air outlet chamber communicates with the interior of the fixed tank. A second servo motor is bolted to one side of the air outlet chamber. A horizontal column is coaxially arranged at the output end of the second servo motor. Multiple fan blades are fixedly connected to the outer wall of the horizontal column. An air outlet plate is fixedly connected to the inner wall of the air outlet chamber.
[0011] As a preferred technical solution of this utility model, the inner wall of the fixed tank is fixedly connected with three partitions, and the three partitions are circumferentially distributed along the axis of the fixed tank.
[0012] As a preferred embodiment of this utility model, a cleaning frame is provided at the bottom of the discharge plate, and a filter plate is provided on the inner wall of the cleaning frame.
[0013] As a preferred technical solution of this utility model, the outer wall of the fixed tank is provided with an observation frame, and the interior of the observation frame is provided with tempered glass.
[0014] As a preferred technical solution of this utility model, the bottom of the base is threadedly connected with four threaded rods, the tops of the four threaded rods extend into the interior of the base, and the bottoms of the four threaded rods are fixedly connected with support pads.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] 1. Through multiple screening settings, efficient multi-screening of sand and gravel materials is achieved. The first servo motor drives the screening cylinder to rotate and screen. At the same time, the cooperation between the fixed column and the spiral guide plate not only extends the screening path of the material, but also effectively prevents the accumulation of sand and gravel, ensuring the secondary screening effect. The vibrating motor generates high-frequency vibration, which further improves the efficiency of preventing accumulation. The scraper removes the sand and gravel particles adhering to the surface of the filter cylinder in real time, ensuring that the screening channel is continuously unobstructed and greatly improving the screening effect of sand and gravel.
[0017] 2. The dust removal components effectively clean up the dust generated during sand and gravel screening. By combining an air pump and a dust suction pipe, the dust in the fixed tank is transported to the waste box, achieving centralized dust collection and treatment, which significantly reduces dust dispersion in the screening area. Attached Figure Description
[0018] Figure 1 A structural schematic diagram of a sand and gravel screening machine for construction is provided for this utility model;
[0019] Figure 2 A schematic diagram of the left-side cross-sectional structure of a sand and gravel screening machine for construction provided by this utility model;
[0020] Figure 3 A front sectional view of a sand and gravel screening machine for construction is provided for this utility model.
[0021] Figure 4 A cross-sectional structural diagram of the air outlet plate and fan blades in a sand and gravel screening machine for construction provided by this utility model;
[0022] Figure 5 This utility model provides a cross-sectional structural diagram of the cleaning frame and partition in a sand and gravel screening machine for construction.
[0023] The diagram shows: 1. Base; 2. Screening assembly; 3. Dust removal assembly; 201. Fixed tank; 202. Conveying frame; 203. Cover plate; 204. Fixing frame; 205. First servo motor; 206. Filter cylinder; 207. Fixed column; 208. Threaded guide plate; 209. Scraper; 210. Vibration motor; 211. Discharge plate; 301. Connecting bin; 302. Dust suction pipe; 303. Air pump; 304. Waste box; 305. Baffle; 4. Air outlet chamber; 5. Second servo motor; 6. Horizontal column; 7. Fan blade; 8. Air outlet plate; 9. Baffle; 10. Cleaning frame; 11. Filter plate; 12. Observation frame; 13. Tempered glass; 14. Threaded rod; 15. Support pad. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] like Figure 1 As shown, this embodiment proposes a sand and gravel screening machine for construction, including a base 1, a screening component 2 for multiple screening of sand and gravel is provided on the top of the base 1, and a dust removal component 3 for cleaning the sand and gravel screening is provided on the top of the base 1.
[0029] like Figure 2As shown, the screening assembly 2 includes a fixed tank 201 fixedly connected to the top of the base 1. A conveying frame 202 is fixedly connected to the outer wall of the fixed tank 201. A cover plate 203 is hinged to the top of the conveying frame 202. Fixed frames 204 are fixedly connected to opposite ends of the fixed tank 201. A first servo motor 205 is bolted to one side of the fixed frame 204. A filter cylinder 206 is coaxially mounted on the output end of the first servo motor 205. The filter cylinder 206 is rotatably connected to the inner wall of the fixed frame 204. The first servo motor 205 drives the filter cylinder 206 to rotate, thereby screening the sand and gravel. A fixed column 207 is rotatably connected to the inner wall of filter cylinder 206. A threaded guide plate 208 is fixedly connected to the outer wall of the fixed column 207. A scraper 209 is fixedly connected to the inner wall of the fixed tank 201. The scraper 209 scrapes the sand and gravel on the rotating filter cylinder 206. A vibration motor 210 is bolted to the bottom of the base 1. The vibration motor 210 generates high-frequency vibration to prevent the accumulation of sand and gravel in the filter cylinder 206 and the fixed tank 201. A discharge plate 211 is fixedly connected to one end of both the fixed tank 201 and the filter cylinder 206. The screened sand and gravel are discharged in an orderly manner through the discharge plate 211. The sand and gravel are conveyed to the filter cylinder 206 through the conveying frame 202. The first servo motor 205 is started to drive the filter cylinder 206 to rotate at a uniform speed, realizing dynamic screening of the sand and gravel. During the rotation and screening process of the filter cylinder 206, the threaded guide plate 208 inside the filter cylinder 206 extends the screening path of the sand and gravel inside the filter cylinder 206, effectively preventing local accumulation of sand and gravel inside the filter cylinder 206 and avoiding clogging. During the screening process, fine sand and gravel pass through the mesh of the filter cylinder 206 and enter the fixed tank 201. The high-frequency vibration generated by the motor 210 is transmitted to the fixed tank 201 through the base 1, which not only improves the screening efficiency but also further ensures the flowability of the material. When the filter cylinder 206 rotates, it maintains close contact with the scraper 209, continuously removing residual sand and gravel adhering to the cylinder wall during the screening operation, ensuring the permeability of the filter cylinder 206. The coarse and fine materials after screening are discharged in an orderly manner through the corresponding discharge plates 211. In the non-screening state, the cover plate 203 can be closed to prevent foreign objects from falling into the filter cylinder 206, which significantly improves the efficiency of sand and gravel screening.
[0030] like Figure 3As shown, the dust removal assembly 3 includes a connecting chamber 301 fixedly connected to the outer wall of the fixed tank 201. A suction pipe 302 is fixedly connected to the top of the connecting chamber 301. An air pump 303 is installed at the end of the suction pipe 302 away from the fixed tank 201. A waste frame 304 is installed at the output end of the air pump 303. The suction force generated by the air pump 303 draws the dust in the fixed tank 201 into the waste frame 304 through the suction pipe 302. During the screening of sand and gravel, the strong suction force generated by the air pump 303 draws the dust out of the fixed tank 201 through the suction pipe 302 and then transports it into the waste frame 304. The baffle 305 efficiently collects the dust in the waste frame 304, greatly reducing the spread of dust.
[0031] like Figure 4 As shown, an air outlet chamber 4 is fixedly connected to one end of the fixed tank 201. The air outlet chamber 4 communicates with the interior of the fixed tank 201. A second servo motor 5 is bolted to one side of the air outlet chamber 4. A horizontal column 6 is coaxially mounted on the output end of the second servo motor 5. Multiple fan blades 7 are fixedly connected to the outer wall of the horizontal column 6, and an air outlet plate 8 is fixedly connected to the inner wall of the air outlet chamber 4. When screening sand and gravel, the fan blades 7 on the horizontal column 6 are driven to rotate by the second servo motor 5, generating airflow that is blown into the fixed tank 201 from the air outlet plate 8. This disperses the fine particles adhering to the filter cartridge 206, and the blown airflow helps to separate lighter impurities, reducing the risk of fine particles clogging the filter cartridge 206.
[0032] like Figure 5 As shown, three baffles 9 are fixedly connected to the inner wall of the fixed tank 201, and the three baffles 9 are distributed circumferentially along the axis of the fixed tank 201. The baffles 9 divide the inner wall of the fixed tank 201 into multiple sections, and the baffles 9 play a guiding role for the sand and gravel, thereby effectively improving the uniformity and thoroughness of sand and gravel screening.
[0033] like Figure 5 As shown, a washing frame 10 is provided at the bottom of the discharge plate 211, and a filter plate 11 is provided on the inner wall of the washing frame 10. Larger sand and gravel that have been screened flow into the washing frame 10 through the discharge plate 211 to wash the sand and gravel and further remove residual dust. By pulling the filter plate 11 out of the washing frame 10, the washed wastewater and clean sand and gravel are separated.
[0034] like Figure 3 As shown, an observation frame 12 is provided on the outer wall of the fixed tank 201, and a tempered glass 13 is provided inside the observation frame 12. Through the observation frame 12 and the tempered glass 13 provided on the fixed tank 201, the state changes of the sand and gravel inside the fixed tank 201 during the screening process can be monitored in real time, ensuring the screening efficiency.
[0035] like Figure 3As shown, the bottom of the base 1 is threaded with four threaded rods 14, the tops of which extend into the interior of the base 1, and the bottoms of which are fixedly connected to support pads 15. The height and tilt angle of the base 1 can be adjusted by rotating the threaded rods 14 inside the base 1, avoiding the problem of tilting or insufficient height when marking on uneven ground. At the same time, the support pads 15 at the bottom ensure the stability of the base 1.
[0036] Specifically, when using this construction sand and gravel screening machine: sand and gravel are conveyed to the filter cylinder 206 via the conveying frame 202. The first servo motor 205 is started to drive the filter cylinder 206 to rotate at a uniform speed, achieving dynamic screening of the sand and gravel. During the rotation and screening process of the filter cylinder 206, the threaded guide plate 208 inside the filter cylinder 206 extends the screening path of the sand and gravel within the filter cylinder 206, effectively preventing local accumulation of sand and gravel within the filter cylinder 206 and avoiding clogging. During the process, fine sand and gravel pass through the mesh of the filter cylinder 206 into the fixed tank 201. The high-frequency vibration generated by the vibrating motor 210 is transmitted to the fixed tank 201 through the base 1, which not only improves the screening efficiency but also further ensures the flowability of the material. When the filter cylinder 206 rotates, it maintains close contact with the scraper 209, continuously removing residual sand and gravel adhering to the cylinder wall during the screening operation, ensuring the permeability of the filter cylinder 206. The coarse and fine materials after screening are discharged in an orderly manner through the corresponding discharge plates 211 (e.g., Figure 2 As shown); during the screening of sand and gravel, a strong suction force is generated by the air pump 303, which transports the dust in the fixed tank 201 to the waste frame 304 through the dust suction pipe 302. The baffle 305 is then pulled out to collect the dust in the waste frame 304, which not only significantly improves the efficiency of sand and gravel screening but also greatly reduces the spread of dust (as shown). Figure 3 (As shown).
[0037] All technical features in this embodiment can be freely combined according to actual needs.
[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A sand and gravel screening machine for construction, comprising a base (1), characterized in that, The top of the base (1) is provided with a screening component (2) for multiple screening of sand and gravel, and the top of the base (1) is provided with a dust removal component (3) for cleaning the screening of sand and gravel. The screening assembly (2) includes a fixed tank (201) fixedly connected to the top of the base (1). A conveying frame (202) is fixedly connected to the outer wall of the fixed tank (201). A cover plate (203) is hinged to the top of the conveying frame (202). Fixed frames (204) are fixedly connected to opposite ends of the fixed tank (201). A first servo motor (205) is bolted to one end of the fixed frame (204). A filter cylinder (205) is coaxially arranged at the output end of the first servo motor (205). 6) The filter cylinder (206) is rotatably connected to the inner wall of the fixed frame (204). The inner wall of the filter cylinder (206) is rotatably connected to a fixed column (207). The outer wall of the fixed column (207) is fixedly connected to a threaded guide plate (208). The inner wall of the fixed tank (201) is fixedly connected to a scraper (209). The bottom of the base (1) is bolted with a vibration motor (210). One end of the fixed tank (201) and the filter cylinder (206) are both fixedly connected to a discharge plate (211).
2. The sand and gravel screening machine for construction as described in claim 1, characterized in that, The dust removal assembly (3) includes a connecting chamber (301) fixedly connected to the outer wall of the fixed tank (201). A suction pipe (302) is fixedly connected to the top of the connecting chamber (301). An air pump (303) is provided at one end of the suction pipe (302) away from the fixed tank (201). A waste frame (304) is provided at the output end of the air pump (303). A baffle (305) is slidably connected to the inner wall of the waste frame (304).
3. The sand and gravel screening machine for construction as described in claim 1, characterized in that, One end of the fixed tank (201) is fixedly connected to an air outlet chamber (4), which is connected to the interior of the fixed tank (201). A second servo motor (5) is bolted to one side of the air outlet chamber (4). A horizontal column (6) is coaxially arranged at the output end of the second servo motor (5). Multiple fan blades (7) are fixedly connected to the outer wall of the horizontal column (6), and an air outlet plate (8) is fixedly connected to the inner wall of the air outlet chamber (4).
4. The sand and gravel screening machine for construction as described in claim 1, characterized in that, The inner wall of the fixed tank (201) is fixedly connected with three partitions (9), and the three partitions (9) are circumferentially distributed along the axial direction of the fixed tank (201).
5. A sand and gravel screening machine for construction according to claim 1, characterized in that, A cleaning frame (10) is provided at the bottom of the discharge plate (211), and a filter plate (11) is provided on the inner wall of the cleaning frame (10).
6. A sand and gravel screening machine for construction according to claim 1, characterized in that, The outer wall of the fixed tank (201) is provided with an observation frame (12), and the interior of the observation frame (12) is provided with tempered glass (13).
7. A sand and gravel screening machine for construction according to claim 1, characterized in that, The bottom of the base (1) is threaded with four threaded rods (14), the tops of the four threaded rods (14) extend into the interior of the base (1), and the bottoms of the four threaded rods (14) are fixedly connected with support pads (15).