Coarse sand screening device for building engineering construction

Abstract

The coarse sand screening device comprises a bottom frame, a box body with an opening in the upper end is fixedly arranged at the upper end of the bottom frame, a crushing mechanism is arranged in the box body, a sand outlet is formed in the bottom of the side face of the box body, and an obliquely-arranged screen is arranged at the position, corresponding to the sand outlet, of the side face of the bottom frame. The screen is movably connected with the bottom frame through a spring assembly, a cam driving mechanism used for driving the screen to vibrate is arranged in the bottom frame, and a feeding mechanism used for conveying gravel is fixedly arranged at the position of a feeding port of the box body. Damp caked sand can be effectively crushed, it is ensured that the granularity of the sand entering the screen is uniform, the problem that the screening effect is affected due to the fact that the caked sand is not treated is solved, the screen is movably connected with the bottom frame through the spring assembly and is driven by the cam driving mechanism to vibrate, the situation that the screen is blocked by the sand can be remarkably reduced through vibration screening, and the screening efficiency is improved. The screening speed is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand screening device technical field, specifically point to a kind of coarse sand screening device for construction engineering. BACKGROUND

[0002] In the field of construction engineering, screening suitable specification coarse sand is a crucial task. The quality and particle size of coarse sand directly affect the quality and construction efficiency of construction engineering.

[0003] Traditional construction engineering sand screening device has many defects in practical application. First, due to the complex and changeable environment of construction site, sand often gets wet, which is easy to clump. If these clumped sand is not crushed, it will directly affect the screening effect and the quality of coarse sand.

[0004] Secondly, the traditional sand screening device has defects in structural design. The screen is usually fixedly arranged obliquely, and the screening process mainly relies on gravity to make sand and stone descend. However, this method is easy to cause sand and stone to block the screen, which reduces the screening speed and efficiency and increases the time cost of construction. In order to overcome these problems and improve the efficiency and quality of coarse sand screening in construction engineering, it is necessary to improve and innovate the existing sand screening device.

[0005] In summary, the existing construction engineering sand screening device cannot meet the needs of efficient and high-quality construction due to the clumping of sand caused by moisture, unreasonable screen structure and other reasons. INVENTION CONTENTS

[0006] (I) Technical problem

[0007] The utility model provides a kind of coarse sand screening device for construction engineering, to solve the problem that traditional construction engineering sand screening device is short of in solving sandstone clumping caused by moisture and screen blockage.

[0008] (II) Technical content

[0009] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of coarse sand screening device for construction engineering, including chassis, the upper end of the chassis is fixedly provided with the box body with upper opening, the box body is internally provided with crushing mechanism, the bottom of the side of the box body is provided with sand outlet, the position corresponding to sand outlet of the side of the chassis is provided with screen obliquely arranged, the screen is movably connected with the chassis by spring assembly, the inside of the chassis is provided with cam drive mechanism for driving screen vibration, the inlet of the box body is fixedly provided with feeding mechanism for conveying sand and stone.

[0010] Further, the crushing mechanism comprises a folding plate fixedly arranged in the box body, a crushing area is formed between the folding plate and the inner wall of the box body, a crushing roller is rotatably arranged in the crushing area, a plurality of crushing protrusions are fixedly arranged on the crushing roller, and the crushing protrusions are close to the folding plate and the inner wall of the box body so as to crush the sand and stone clumps.

[0011] Further, the spring assembly comprises a plurality of guide rods fixedly arranged on the base frame, the guide rods pass through the screen and are slidably connected with the screen, a limiting plate is fixedly arranged on one end of the guide rod passing through the screen, and a spring is sleeved on the guide rod and located between the limiting plate and the screen.

[0012] Further, the cam driving mechanism comprises a rotating shaft rotatably arranged in the base frame, and comprises a motor fixedly arranged on the side of the base frame and used for driving the rotating shaft to rotate, an eccentric cam is fixedly arranged on the rotating shaft and in contact with the bottom of the screen.

[0013] Further, the feeding mechanism comprises a belt conveyor connected with the feeding port of the box body, and a plurality of baffles are fixedly arranged on the surface of the belt of the belt conveyor.

[0014] Further, the inner bottom surface of the box body is provided with an inclined slope inclined to the sand outlet.

[0015] (Three) technical effects

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] 1. The crushing mechanism can effectively crush the sand and stone clumps affected by moisture, ensure that the sand and stone entering the screen has uniform particle size, greatly improve the precision and quality of screening, and avoid the problem that the screening effect is affected due to the untreated clumped sand and stone.

[0018] 2. The screen is movably connected with the base frame through the spring assembly and is driven to vibrate by the cam driving mechanism, thereby changing the traditional screening mode relying on gravity. The vibrating screening can significantly reduce the situation that the sand and stone blocks the screen, accelerate the screening speed and improve the work efficiency.

[0019] 3. The feeding mechanism adopts the belt conveyor and the baffles arranged on the belt, so that the sand and stone can be stably and orderly conveyed, and the continuity and stability of the screening process are ensured.

[0020] 4. The inner bottom surface of the box body is provided with an inclined slope inclined to the sand outlet, which is beneficial to the smooth discharge of the screened sand and stone and avoids the accumulation in the box body. DRAWINGS

[0021] Figure 1 is a three-dimensional structure diagram of a coarse sand screening device for construction engineering construction Figure 1 .

[0022] Figure 2 is a kind of building engineering construction with coarse sand screening device's three-dimensional structure schematic Figure 2 .

[0023] Figure 3 is a kind of building engineering construction with coarse sand screening device's three-dimensional structure schematic Figure 3 .

[0024] Figure 4 is the main view structure schematic of the coarse sand screening device for building engineering construction of the utility model.

[0025] Figure 5 is the overhead structure schematic of the coarse sand screening device for building engineering construction of the utility model.

[0026] Figure 6 is the cross-section structure schematic of the coarse sand screening device for building engineering construction of the utility model.

[0027] As shown in the figure: 1, base frame;2, box;3, sand outlet;4, screen;5, flap;6, crushing roller;7, crushing protruding block;8, guide rod;9, limit plate;10, spring;11, rotating shaft;12, motor;13, eccentric cam;14, belt conveyor;15, baffle;16, slope;17, motor two. DETAILED DESCRIPTION

[0028] In the description of the utility model, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation configuration and operation, so it cannot be understood as a limitation on the utility model.

[0029] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "provided with", "mounted", "connected", "connected" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0030] The utility model will be further described in detail below in combination with the drawings.

[0031] In combination with the drawings Figure 1 to the drawings Figure 6The utility model provides a kind of coarse sand screening device for construction engineering construction, including chassis 1, the upper end of the chassis 1 is equipped with the box 2 of upper end opening, box 2 inside is equipped with breaking mechanism, the bottom of the side of box 2 is equipped with sand outlet 3, the position of the side of chassis 1 corresponding sand outlet 3 is equipped with screen 4 of inclined arrangement, screen 4 is movably connected with chassis 1 by spring assembly, the inside of chassis 1 is equipped with cam drive mechanism for driving screen 4 vibration, the feed inlet of box 2 is fixedly provided with feeding mechanism for conveying sandstone.

[0032] Reference attached Figure 1 The breaking mechanism includes a folding plate 5 fixedly arranged inside the box 2, and a breaking zone is formed between the folding plate 5 and the inner wall of the box 2. A breaking roller 6 is rotatably arranged inside the breaking zone. A plurality of breaking protrusions 7 are fixedly arranged on the breaking roller 6. The breaking protrusions 7 are close to the folding plate 5 and the inner wall of the box 2 to break the clumped sandstone. A second motor 17 is fixedly arranged outside the box 2 to drive the breaking roller 6 to rotate.

[0033] The breaking mechanism can efficiently process the clumped sandstone affected by moisture. The breaking protrusions 7 on the breaking roller 6 closely cooperate with the folding plate 5 and the inner wall of the box 2 to form a strong breaking effect. Whether it is a larger clump or a sand block with higher hardness, it can be fully broken in the breaking zone. This ensures that the sandstone entering the subsequent screening link has uniform particle size, greatly improves the accuracy and efficiency of screening, lays a foundation for obtaining high-quality coarse sand, and effectively avoids the problem that the overall screening effect and the quality of coarse sand are affected by clumped sandstone without breaking.

[0034] Reference attached Figure 2 The spring assembly includes a plurality of guide rods 8 fixedly arranged on the chassis 1. The guide rods 8 pass through the screen 4 and are slidably connected with the screen 4. Limiting plates 9 are fixedly arranged on one end of the guide rods 8 passing through the screen 4. Springs 10 are sleeved on the guide rods 8 between the limiting plates 9 and the screen 4.

[0035] The spring assembly provides flexible support and resetting capability for the screen 4 through the cooperative work of the guide rods 8, the limiting plates 9, and the springs 10. When the screen 4 is subjected to external force, the springs can absorb and buffer the impact force, protecting the screen and related components from excessive damage. At the same time, in the vibration process of the screen 4, the springs 10 can help the screen to reset quickly, maintain a stable vibration frequency and amplitude, and thus effectively improve the efficiency and effect of screening. This elastic support structure also enhances the adaptability of the screen, enabling it to cope with sandstone of different weights and particle sizes, ensuring the smooth progress of the screening work.

[0036] Reference attached Figure 3 The cam drive mechanism includes a rotating shaft 11 rotatably arranged inside the chassis 1 and a motor 12 fixedly arranged on the side of the chassis 1 to drive the rotating shaft 11 to rotate. An eccentric cam 13 is fixedly arranged on the rotating shaft 11 and in contact with the bottom of the screen 4.

[0037] The design of the eccentric cam 13 of the cam driving mechanism converts the rotary motion of the rotating shaft 11 into the up-and-down vibration of the screen 4. This precise and powerful driving mode can generate sufficient vibration amplitude and frequency to quickly separate and screen the sand and gravel on the screen. Compared with the traditional driving mode, the cam driving mechanism has the characteristics of simple structure, stable operation and easy maintenance. It effectively solves the problem of sand and gravel easily blocking the screen, greatly improves the speed and quality of screening, and reduces the failure rate and maintenance cost of the equipment.

[0038] Referring to the drawings Figure 2 The feeding mechanism includes a belt conveyor 14 connected to the feeding port of the box 2, and a plurality of baffles 15 are fixedly arranged on the surface of the belt conveyor 14. The inner bottom surface of the box 2 is provided with an inclined slope 16 inclined to the sand outlet 3.

[0039] The coarse sand screening device for building engineering construction has the following working principle and use process in actual use:

[0040] Firstly, the sand and gravel to be screened is placed on the belt conveyor 14 of the feeding mechanism. The belt conveyor 14 is started, and the sand and gravel is stably and orderly conveyed to the feeding port of the box 2 under the blocking and pushing of the baffles 15 fixedly arranged on the belt.

[0041] After entering the inside of the box 2, the sand and gravel first falls into the crushing area. At this time, the motor 2 17 drives the crushing roller 6 to rotate, and the crushing lugs 7 on the crushing roller 6 are close to the folding plate 5 and the inner wall of the box to crush the caked sand and gravel into a size that meets the screening requirements.

[0042] The sand and gravel after crushing falls on the inclined slope 16 on the inner bottom surface of the box, and moves to the sand outlet 3 under the action of gravity. The sand and gravel at the sand outlet 3 falls on the screen 4 arranged obliquely.

[0043] At the same time, the motor 12 drives the rotating shaft 11 to rotate, and the eccentric cam 13 on the rotating shaft 11 rotates accordingly. When the protruding part of the eccentric cam 13 contacts the bottom of the screen 4, the screen 4 is lifted up; when the protruding part of the eccentric cam 13 rotates away from the screen 4, the screen falls back under the action of the spring 10. In this way, the screen 4 is continuously vibrated under the action of the cam driving mechanism.

[0044] During the vibration of the screen, the sand and gravel meeting the requirements of the coarse sand particle size quickly pass through the mesh of the screen 4 and fall below the bottom frame. The sand and gravel that do not meet the requirements move along the inclined direction of the screen 4 and are finally discharged from one end of the screen 4.

[0045] During the whole use, the efficiency and quality of screening are greatly improved, the situation of sand and stone blocking the screen is reduced, and the required coarse sand can be quickly provided for the construction engineering construction.

[0046] The above describes the utility model and its implementation mode, and this description is not restrictive, and the embodiment shown in the drawings is only one of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the utility model, without creative design, similar structure mode and embodiments of the technical scheme, which should belong to the protection scope of the utility model.

Claims

1. A coarse sand screening device for construction engineering construction, comprising a chassis (1), characterized in that: The bottom frame (1) is fixedly provided with a box (2) with an open upper end at the upper end, the box (2) is internally provided with a crushing mechanism, the side bottom of the box (2) is provided with a sand outlet (3), the side of the bottom frame (1) is provided with an inclined screen (4) corresponding to the position of the sand outlet (3), the screen (4) is movably connected with the bottom frame (1) through a spring assembly, the inside of the bottom frame (1) is provided with a cam driving mechanism for driving the screen (4) to vibrate, and the feeding port of the box (2) is fixedly provided with a feeding mechanism for conveying sand and stones. The crushing mechanism comprises a folding plate (5) fixedly arranged in the box (2), a crushing area is formed between the folding plate (5) and the inner wall of the box (2), a crushing roller (6) is rotatably arranged in the crushing area, a plurality of crushing protrusions (7) are fixedly arranged on the crushing roller (6), the crushing protrusions (7) are close to the folding plate (5) and the inner wall of the box (2) so as to crush the agglomerated sand and stones, and a second motor (17) for driving the crushing roller (6) to rotate is fixedly arranged outside the box (2).

2. A coarse sand screening device for construction engineering construction according to claim 1, characterized in that: The spring assembly comprises a plurality of guide rods (8) fixedly arranged on the bottom frame (1), the guide rods (8) pass through the screen (4) and are slidably connected with the screen (4), a limiting plate (9) is fixedly arranged at one end of the guide rod (8) passing through the screen (4), and a spring (10) is sleeved on the guide rod (8) and located between the limiting plate (9) and the screen (4).

3. A coarse sand screening device for construction engineering construction according to claim 1 characterized in that: The cam driving mechanism comprises a rotating shaft (11) rotatably arranged in the inside of the bottom frame (1), a motor (12) fixedly arranged on the side of the bottom frame (1) for driving the rotating shaft (11) to rotate, an eccentric cam (13) fixedly arranged on the rotating shaft (11), and the eccentric cam (13) in contact with the bottom of the screen (4).

4. A coarse sand screening device for construction engineering work as claimed in claim 1, wherein: The feeding mechanism comprises a belt conveyor (14) connected with the feeding port of the box (2), and a plurality of baffles (15) are fixedly arranged on the surface of the belt of the belt conveyor (14).

5. A coarse sand screening device for construction engineering work as claimed in claim 1, wherein: The inside of the box (2) is provided with an inclined slope (16) inclined to the sand outlet (3). The inside of the box (2) is provided with an inclined slope (16) inclined to the sand outlet (3).

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