Sand screening machine for constructional engineering
By introducing auxiliary mechanisms and inclined screen plate structures into the sand screening machine, the problems of hopper blockage and excessive material accumulation are solved, achieving uniform material feeding and efficient sand and gravel separation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI TONGJI CONSTR PROJECT MANAGEMENT CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Existing sand screening machines used in construction projects have inconveniences in material control, which can easily lead to hopper blockage and excessive material accumulation on the screen plate, especially in the case of wet sand and gravel.
A sand screening machine was designed, which includes a support frame, a hopper, a crossbar, a slide rail, a screening component, and an auxiliary mechanism. The auxiliary mechanism controls the feeding rate in the hopper and drives the screening component to move horizontally back and forth to prevent blockage. At the same time, the inclined screen plate and sand guide plate are used to separate sand and gravel.
It achieves uniform material feeding, prevents hopper blockage, improves sand and gravel separation efficiency, and ensures smooth screening process.
Smart Images
Figure CN224114528U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand screening machines, specifically a sand screening machine for construction engineering. Background Technology
[0002] A sand screening machine is an engineering machine used for sand and gravel separation. It is suitable for scenarios such as rivers, reservoirs, and coal yards, and separates coarse and fine materials through screening equipment. Sand screening machines used in construction projects are mostly divided into drum sand screening machines, vibrating sand screening machines, and washing sand screening machines. These types of sand screening machines are generally equipped with hoppers, through which material is fed into the screen or screen cylinder for sand separation. However, they are relatively lacking in terms of material feeding control. Some are difficult to control the feeding amount. If the feeding rate is too fast, it is easy for material to accumulate on the screen plate. Some are also prone to hopper blockage, especially with relatively moist sand and gravel. Utility Model Content
[0003] The purpose of this utility model is to provide a sand screening machine for construction engineering in order to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a sand screening machine for construction engineering, comprising a support frame, wherein a hopper is installed at the upper end of the support frame, wherein the lower end of the support frame is provided with multiple crossbars, each of the multiple crossbars is equipped with a first slide rail, and a screening component is slidably connected to the multiple first slide rails along their length direction via a slide block, one end of the screening component being located directly below the hopper;
[0005] An auxiliary mechanism is installed between the screening component and the hopper to control the feeding rate of sand and gravel in the hopper, and simultaneously drive the screening component to move horizontally back and forth along the length of the first slide rail, so as to prevent the sand and gravel in the hopper from becoming blocked and the screening component from accumulating too much material.
[0006] As a further embodiment of this utility model: the screening component includes an inclined screen plate and a sand guide plate, the screen plate is located above the sand guide plate, and the screen plate and the sand guide plate are inclined in an alternating manner. Two protective plates are provided between the screen plate and the sand guide plate, and the two protective plates are symmetrically distributed at both ends between the screen plate and the sand guide plate.
[0007] As a further improvement of this utility model, the sand guide plate and the upper surface of the crossbar are arranged parallel to each other.
[0008] As a further improvement of this utility model, two second slide rails are symmetrically provided at both ends of the discharge port of the hopper.
[0009] As a further embodiment of this utility model: the auxiliary mechanism includes a movable plate located inside the hopper discharge port, the movable plate being slidably connected along the length of the second slide rail by a slider, two discharge slots being symmetrically opened at both ends of the movable plate, and a motor being installed on the side of the support frame near the hopper;
[0010] The output end of the motor is connected to a turntable via a coupling. The turntable is connected to the movable plate via a connecting rod. One end of the connecting rod is hinged to one end of the movable plate, and the other end of the connecting rod is eccentrically hinged to the turntable. The upper surface of the movable plate is provided with multiple equidistant material feeding components, which are located inside the hopper.
[0011] As a further improvement of this utility model, the cross-section of the sifting component is a rhomboid structure.
[0012] As a further improvement of this utility model, the auxiliary mechanism further includes a connecting frame, which is connected to the lower middle part of the movable plate, and the lower end of the connecting frame is fixedly connected to the screen plate by bolts.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model, by setting an auxiliary mechanism, can be used to control the feeding rate of sand and gravel in the hopper and to clear the feeding channel of the hopper, preventing blockage at the feeding port of the hopper. At the same time, the auxiliary mechanism can also drive the screening component to move back and forth along the length of the first slide rail, thereby making the screening component as a whole produce a horizontal shaking effect, so as to improve the sand and gravel separation efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure from another perspective of the present invention;
[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 4 This is a schematic diagram of the structure of the hopper of this utility model;
[0019] Figure 5 This is an enlarged structural diagram of region A of this utility model;
[0020] Figure 6 This is a schematic diagram of the auxiliary mechanism structure of this utility model.
[0021] In the diagram: 1. Support frame; 11. Crossbar; 12. First slide rail; 2. Hopper; 21. Second slide rail; 3. Screening assembly; 301. Screen plate; 302. Sand guide plate; 303. Protective plate; 4. Auxiliary mechanism; 401. Movable plate; 402. Discharge chute; 403. Turntable; 404. Connecting rod; 405. Connecting frame; 406. Unloading component; 407. Motor. Detailed Implementation
[0022] 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.
[0023] Please see Figures 1-6 In this embodiment of the utility model, a sand screening machine for construction engineering includes a support frame 1, and a hopper 2 is installed at the upper end of the support frame 1. The support frame 1 is characterized in that a plurality of horizontal bars 11 are provided at the lower end, and a first slide rail 12 is installed on each of the plurality of horizontal bars 11. The length direction of the plurality of first slide rails 12 is slidably connected to a screening component 3 through a slide block, and one end of the screening component 3 is located directly below the hopper 2.
[0024] An auxiliary mechanism 4 is installed between the screening component 3 and the hopper 2 to control the feeding rate of sand and gravel in the hopper 2, and at the same time drive the screening component 3 to move horizontally back and forth along the length of the first slide rail 12 to prevent the sand and gravel in the hopper 2 from getting blocked and the screening component 3 from accumulating too much material.
[0025] Two second slide rails 21 are symmetrically provided at both ends of the discharge port of the hopper 2; the auxiliary mechanism 4 includes a movable plate 401 located inside the discharge port of the hopper 2. The movable plate 401 is slidably connected along the length of the second slide rail 21 by a slider. Two discharge channels 402 are symmetrically opened at both ends of the movable plate 401. A motor 407 is installed on the side of the support frame 1 near the hopper 2.
[0026] The output end of the motor 407 is connected to the turntable 403 via a coupling. The turntable 403 is connected to the movable plate 401 via a connecting rod 404. One end of the connecting rod 404 is hinged to one end of the movable plate 401, and the other end of the connecting rod 404 is eccentrically hinged to the turntable 403. The upper surface of the movable plate 401 is provided with multiple equidistant material feeding components 406, which are located inside the hopper 2.
[0027] The auxiliary mechanism 4 also includes a connecting frame 405, which is connected to the middle of the lower end of the movable plate 401, and the lower end of the connecting frame 405 is fixedly connected to the screen plate 301 by bolts.
[0028] In this embodiment: by setting the auxiliary mechanism 4, it can be used to control the feeding rate of sand and gravel in the hopper 2 and to clear the feeding of the hopper 2, so as to prevent the feeding port of the hopper 2 from being blocked. At the same time, the auxiliary mechanism 4 can also drive the screening component 3 to move back and forth along the length direction of the first slide rail 12, thereby making the screening component 3 produce a horizontal shaking effect to improve the sand and gravel separation efficiency.
[0029] In use, the turntable 403 is driven to rotate by the motor 407. The rotating turntable 403 drives the movable plate 401 to move back and forth at the discharge port of the hopper 2 via the connecting rod 404. When the discharge channel 402 is below the hopper 2, the sand and gravel in the hopper 2 will fall onto the screen plate 301 through the discharge channel 402. By controlling the speed of the motor 407, the uniform discharge of the hopper 2 can be reasonably ensured. At the same time, as the movable plate 401 moves back and forth, the material unloading component 406 also moves back and forth, thereby continuously agitating the sand and gravel at the discharge port of the hopper 2, which can effectively prevent the sand and gravel in the hopper 2 from clogging.
[0030] Please refer to this carefully. Figures 1-6 The screening component 3 includes an inclined screen plate 301 and a sand guide plate 302. The screen plate 301 is located above the sand guide plate 302, and the screen plate 301 and the sand guide plate 302 are inclined in an alternating manner. Two protective plates 303 are provided between the screen plate 301 and the sand guide plate 302. The two protective plates 303 are symmetrically distributed at both ends between the screen plate 301 and the sand guide plate 302. The sand guide plate 302 is parallel to the upper surface of the crossbar 11.
[0031] In this embodiment: when sand and gravel fall onto the screen plate 301, since the screen plate 301 is inclined and the connecting frame 405 also drives the screening component 3 to move back and forth along the length of the first slide rail 12, a shaking effect is generated, which causes the sand and gravel on the inclined end of the screen plate 301 to slide to the downward inclined end. After the sand and gravel pass through the screen, small sand particles will fall through the screen holes into the sand guide plate 302 below, and large pebbles will flow out from the downward inclined end of the screen plate 301; the sand falling onto the sand guide plate 302 is also affected by the inclination of the sand guide plate 302 itself and the shaking effect of the sand guide plate 302 itself, and the sand will flow out from the downward inclined end of the sand guide plate 302 and be collected, thereby completing the screening of sand and gravel;
[0032] The screen plate 301 and the sand guide plate 302 are staggered and inclined. At the same time, protective plates 303 are installed on both sides between the movable plate 401 and the discharge channel 402, which can effectively reduce the sand from being thrown up and spilling during the falling process, and prevent the sand from being scattered and inconvenient to clean.
[0033] Please refer to this carefully. Figures 1-6The cross-section of the sprue 406 is a rhomboid structure.
[0034] In this embodiment, the material sifting component 406 is a long strip structure with a rhomboid cross-section, which reduces the resistance of the material sifting component 406 in moving within the sand and gravel pile and ensures smooth movement of the material sifting component 406.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A sand screening machine for construction engineering, comprising a support frame (1), wherein a hopper (2) is installed at the upper end of the support frame (1), characterized in that, The lower end of the support frame (1) is provided with multiple horizontal bars (11), and each of the multiple horizontal bars (11) is equipped with a first slide rail (12). The length direction of the multiple first slide rails (12) is slidably connected to a screening component (3) through a slide block. One end of the screening component (3) is located directly below the hopper (2). An auxiliary mechanism (4) is installed between the screening component (3) and the hopper (2) to control the feeding rate of sand and gravel in the hopper (2) and simultaneously drive the screening component (3) to move horizontally back and forth along the length direction of the first slide rail (12) to prevent the sand and gravel in the hopper (2) from becoming blocked and to prevent excessive material from piling up on the screening component (3).
2. The sand screening machine for construction engineering according to claim 1, characterized in that, The screening component (3) includes an inclined screen plate (301) and a sand guide plate (302). The screen plate (301) is located above the sand guide plate (302), and the screen plate (301) and the sand guide plate (302) are inclined in an alternating manner. Two protective plates (303) are provided between the screen plate (301) and the sand guide plate (302), and the two protective plates (303) are symmetrically distributed at both ends between the screen plate (301) and the sand guide plate (302).
3. A sand screening machine for construction engineering according to claim 2, characterized in that, The sand guide plate (302) is arranged parallel to the upper surface of the crossbar (11).
4. A sand screening machine for construction engineering according to claim 3, characterized in that, The hopper (2) has two second slide rails (21) symmetrically arranged at both ends of the discharge port.
5. A sand screening machine for construction engineering according to claim 4, characterized in that, The auxiliary mechanism (4) includes a movable plate (401) located inside the discharge port of the hopper (2). The movable plate (401) is slidably connected to the second slide rail (21) along its length by a slider. Two discharge slots (402) are symmetrically opened at both ends of the movable plate (401). A motor (407) is installed on the side of the support frame (1) near the hopper (2). The output end of the motor (407) is connected to a turntable (403) via a coupling. The turntable (403) is connected to the movable plate (401) via a connecting rod (404). One end of the connecting rod (404) is hinged to one end of the movable plate (401), and the other end of the connecting rod (404) is eccentrically hinged to the turntable (403). The upper surface of the movable plate (401) is provided with multiple equidistant material feeding components (406) in the middle, and the multiple material feeding components (406) are located inside the hopper (2).
6. A sand screening machine for construction engineering according to claim 5, characterized in that, The cross-section of the sifting component (406) is a rhomboid structure.
7. A sand screening machine for construction engineering according to claim 6, characterized in that, The auxiliary mechanism (4) also includes a connecting frame (405), which is connected to the lower middle part of the movable plate (401), and the lower end of the connecting frame (405) is fixedly connected to the screen plate (301) by bolts.