A sand screening device for engineering construction

Abstract

This utility model discloses a sand screening device for engineering construction, including a screening chamber. A screen plate is detachably installed inside the right side of the screening chamber. A drive motor is installed at the center of the rear end of the screening chamber. A first chain disk is installed at the output shaft end of the drive motor, and a actuating block is fixedly connected to the front end of the first chain disk. This utility model, by setting a screening frame inside the screening chamber, allows sand entering the screening chamber from the top to fall into the screening frame through the guidance of the first guide block. When the drive motor starts, it drives the stirring blades to rotate via the first chain disk and the actuating block. The stirring blades can quickly tumble and screen the sand in the screening frame. Furthermore, the rotation of the actuating block can push a moving block to move. This moving block can then drive a slider to slide on a sliding rod and compress a spring on one side. The moving block can also drive the screening frame to reciprocate laterally within the screening chamber, thereby efficiently screening the sand in the screening frame.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically a sand screening device for engineering construction. Background Technology

[0002] Sand screening devices for engineering construction are mechanical devices used to separate sand from impurities such as stones in sand and gravel mixtures. They are crucial in many fields, including construction and mining. As a key step in engineering construction, sand screening directly affects the quality and stability of construction. Sand often contains impurities such as stones, soil, and plant residues, which can seriously interfere with the quality of the project. The sand screening process effectively removes these impurities, ensuring the purity of the construction materials. Furthermore, given the varying requirements for sand particle size in different projects, sand screening can also precisely classify sand according to specific particle size ranges, thereby meeting diverse engineering needs.

[0003] A sand screening device for engineering construction disclosed in Chinese Patent Publication No. CN220461296U, through the cooperation of multiple structures such as fixed blocks, slide rails, screen plates, holes, blocks, slide groove one, limit rods, springs, and slide groove two, realizes the quick and easy disassembly of the screen plate, which facilitates the replacement of screen plates according to screening specifications and also facilitates the disassembly and cleaning of the screen plates, thus improving the applicability and practicality. However, the use of the sand screening device has certain limitations. The internal sand screening rate is relatively slow, resulting in slow sand falling and affecting the overall use effect of the sand screening device. Utility Model Content

[0004] The purpose of this utility model is to provide a sand screening device for engineering construction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sand screening device for engineering construction, comprising a screening chamber, a screen plate detachably installed inside the right side of the screening chamber, a drive motor installed at the center of the rear end of the screening chamber, a first chain disk installed at the output shaft end of the drive motor, a actuating block fixedly connected to the front end of the first chain disk, a stirring blade fixedly connected to the front end of the actuating block, a shaking mechanism provided on the left and right sides of the rear end of the screening chamber, a screening frame provided at the front end of the shaking mechanism, and a cleaning mechanism for cleaning the upper surface of the screen plate and the lower surface of the screening frame.

[0006] Preferably, a first guide block is fixed to the top of the left and right sides inside the screening chamber, the bottom of the screening chamber is inclined from right to left, a sand outlet is opened at the bottom of the left side of the screening chamber, and the screening chamber and the screen plate are fixed together by bolts and threads.

[0007] Preferably, the shaking mechanism includes movable grooves on the left and right sides of the rear end inside the screening chamber. A sliding rod is fixedly connected to the center of the movable groove. A slider is slidably connected to the outside of the sliding rod. A spring is fixedly connected to the right side of the slider. A moving block is fixedly connected to the front end of the slider. The front ends of the two moving blocks are fixedly connected to the screening frame.

[0008] Preferably, a through groove is provided at the center of both the front and rear ends of the screening frame. Since the through groove provides space for the stirring blades to move, a second guide block is fixed at the center of both the front and rear ends inside the screening frame. The second guide block is set at the top of the through groove to prevent sand from passing through the through groove.

[0009] Preferably, the cleaning mechanism includes a chain externally engaged with a first chain disc, a second chain disc internally engaged with the bottom end of the chain, the rear end of the second chain disc rotating within the screening chamber, a limiting cylinder fixedly connected to the middle position of the left side inside the screening chamber, a reciprocating screw rotatably connected to the center position inside the limiting cylinder, the rear end of the reciprocating screw fixedly connected to the second chain disc, a driving block sliding inside the limiting cylinder, a through hole adapted to the reciprocating screw on the driving block, a pin fixedly connected inside the through hole, the head of the pin slidably connected to the reciprocating thread groove on the reciprocating screw, and a cleaning push plate fixedly connected to the lower surface of the driving block.

[0010] Preferably, the upper surface of the cleaning pusher plate is in contact with the lower surface of the screen frame, and the lower surface of the cleaning pusher plate is in contact with the upper surface of the screen plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This type of sand screening device for engineering construction, by setting a screening frame in the screening chamber, allows sand entering the screening chamber from the top to fall into the screening frame through the guidance of the first guide block. At this time, the drive motor starts and drives the stirring blade to rotate through the first chain and the agitator block. The stirring blade can quickly tumble and screen the sand in the screening frame. The rotation of the agitator block can push the moving block to move. At this time, the moving block can drive the slider to slide on the slide rod and squeeze the spring on one side. The moving block can also drive the screening frame to move laterally back and forth in the screening chamber, thereby efficiently screening the sand in the screening frame and improving the overall screening effect and the overall working speed of the sand screening device.

[0013] 2. This type of sand screening device for engineering construction has a chain installed on the outside of the first chain disc. When the drive motor drives the first chain disc to rotate, the first chain disc can drive the second chain disc to rotate via the chain. At this time, the second chain disc drives the reciprocating screw to rotate inside the limiting cylinder. This allows the drive block on the reciprocating screw to drive the cleaning push plate to move longitudinally back and forth in the screening chamber. During the movement of the cleaning push plate, it can assist in cleaning the sand at the bottom of the screening frame and the top of the screening plate, improving the sand screening effect while preventing sand blockage and improving the overall functionality of the sand screening device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0018] Figure 5 This is a front view structural diagram of the cleaning mechanism of this utility model;

[0019] Figure 6 This is a schematic diagram of the right-side side view of the cleaning mechanism of this utility model.

[0020] In the diagram: 1. Screening bin; 101. First guide block; 102. Sand outlet; 2. Screen plate; 3. Drive motor; 301. First chain disc; 302. Actuating block; 4. Agitator blade; 5. Shaking mechanism; 501. Movable groove; 502. Slide rod; 503. Slider; 504. Spring; 505. Moving block; 6. Screening frame; 601. Through groove; 602. Second guide block; 7. Cleaning mechanism; 701. Chain; 702. Second chain disc; 8. Limiting cylinder; 801. Reciprocating screw; 802. Drive block; 803. Cleaning push plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-6 This utility model provides two technical solutions:

[0023] Example 1: A sand screening device for engineering construction includes a screening chamber 1. A screen plate 2 is detachably installed inside the right side of the screening chamber 1. A drive motor 3 is installed at the center of the rear end of the screening chamber 1. A first chain disk 301 is installed at the output shaft end of the drive motor 3. A actuating block 302 is fixedly connected to the front end of the first chain disk 301. An agitator 4 is fixedly connected to the front end of the actuating block 302. Shaking mechanisms 5 are provided on the left and right sides of the rear end of the screening chamber 1. A screening frame 6 is provided at the front end of the shaking mechanism 5. The device also includes a cleaning mechanism 7, which is used to clean the upper surface of the screen plate 2 and the lower surface of the screening frame 6. When the drive motor 3 is started, it can drive the agitator 4 to rotate through the first chain disk 301 and the actuating block 302, and cause the agitator 4 to turn over the sand in the screening frame 6.

[0024] The top of the left and right sides inside the screening chamber 1 is fixed with a first guide block 101. The bottom of the screening chamber 1 is inclined from right to left. The bottom of the left side of the screening chamber 1 is provided with a sand outlet 102. The screening chamber 1 and the screen plate 2 are fixed by bolts and threads. The first guide block 101 can guide the sand entering the screening chamber 1 and the sand can be discharged through the sand outlet 102.

[0025] The shaking mechanism 5 includes movable grooves 501 on the left and right sides of the rear end inside the screening chamber 1. A slide rod 502 is fixedly connected to the center of the movable groove 501. A slider 503 is slidably connected to the outside of the slide rod 502. A spring 504 is fixedly connected to the right side of the slider 503. A moving block 505 is fixedly connected to the front end of the slider 503. The front ends of the two moving blocks 505 are fixedly connected to the screening frame 6. When the agitator 302 rotates, it can intermittently push the moving blocks 505 on both sides to move. At this time, the moving blocks 505 are subjected to force, which can drive the slider 503 to slide on the slide rod 502. At the same time, the slider 503 can squeeze the spring 504 on one side. Due to the reaction force of the spring 504 being squeezed, the slider 503 can drive the moving block 505 to reset. Thus, the moving block 505 can drive the screening frame 6 to move laterally back and forth inside the screening chamber 1.

[0026] A through groove 601 is provided at the center of both the front and rear ends of the screening frame 6. The through groove 601 provides space for the stirring blade 4 to move. A second guide block 602 is fixed at the center of both the front and rear ends inside the screening frame 6. The second guide block 602 is located at the top of the through groove 601 to prevent sand from passing through the through groove 601.

[0027] Example 2 differs from Example 1 mainly in that:

[0028] A sand screening device for engineering construction includes a screening chamber 1. A screen plate 2 is detachably installed inside the right side of the screening chamber 1. A drive motor 3 is installed at the center of the rear end of the screening chamber 1. A first chain disk 301 is installed at the output shaft end of the drive motor 3. A agitator block 302 is fixedly connected to the front end of the first chain disk 301. An agitator blade 4 is fixedly connected to the front end of the agitator block 302. Shaking mechanisms 5 are provided on the left and right sides of the rear end of the screening chamber 1. A screening frame 6 is provided at the front end of the shaking mechanism 5. The device also includes a cleaning mechanism 7, which is used to clean the upper surface of the screen plate 2 and the lower surface of the screening frame 6.

[0029] The top of the left and right sides inside the screening chamber 1 is fixed with a first guide block 101. The bottom of the screening chamber 1 is inclined from right to left. The bottom of the left side of the screening chamber 1 is provided with a sand outlet 102. The screening chamber 1 and the screen plate 2 are fixed by bolts and threads.

[0030] The shaking mechanism 5 includes movable grooves 501 on the left and right sides of the rear end inside the screening chamber 1. A slide rod 502 is fixedly connected to the center of the movable groove 501. A slider 503 is slidably connected to the outside of the slide rod 502. A spring 504 is fixedly connected to the right side of the slider 503. A moving block 505 is fixedly connected to the front end of the slider 503. The front ends of the two moving blocks 505 are fixedly connected to the screening frame 6.

[0031] A through groove 601 is provided at the center of both the front and rear ends of the screening frame 6. The through groove 601 provides space for the stirring blade 4 to move. A second guide block 602 is fixed at the center of both the front and rear ends inside the screening frame 6. The second guide block 602 is located at the top of the through groove 601 to prevent sand from passing through the through groove 601.

[0032] The cleaning mechanism 7 includes a chain 701 externally engaged with a first chain disc 301, and a second chain disc 702 internally engaged with the bottom end of the chain 701. The rear end of the second chain disc 702 rotates within the screening chamber 1. A limiting cylinder 8 is fixedly connected to the middle position on the left side inside the screening chamber 1. A reciprocating screw 801 is rotatably connected to the center position inside the limiting cylinder 8. The rear end of the reciprocating screw 801 is fixedly connected to the second chain disc 702. A driving block 802 slides inside the limiting cylinder 8. The driving block 802 has a groove for... The reciprocating screw 801 is fitted with a through hole, and a pin is fixedly connected inside the through hole. The head of the pin is slidably connected to the reciprocating thread groove on the reciprocating screw 801. A cleaning push plate 803 is fixedly connected to the lower surface of the drive block 802. The first chain disk 301 can drive the second chain disk 702 to rotate through the chain 701. At this time, the second chain disk 702 drives the reciprocating screw 801 to rotate inside the limiting cylinder 8. Then, the drive block 802 on the reciprocating screw 801 can drive the cleaning push plate 803 to move longitudinally back and forth in the screening chamber 1.

[0033] The upper surface of the cleaning push plate 803 is attached to the lower surface of the screen frame 6, and the lower surface of the cleaning push plate 803 is attached to the upper surface of the screen plate 2. Meanwhile, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] In this embodiment, the sand to be screened is poured into the screening chamber 1 through the top of the screening chamber 1. Guided by the first guide block 101, the sand falls into the screening frame 6 inside the screening chamber 1. At this time, the drive motor 3 starts, causing the first chain disc 301 and the agitator block 302 to rotate. The agitator block 302 then rotates the stirring blade 4, causing it to agitate the sand in the screening frame 6 and accelerate the screening process. Simultaneously, the agitator block 302 pushes the moving block 505 to rotate, causing the moving block 505 to move the screening frame 6. The material frame 6 can shake the sand inside, thereby accelerating the fall of the sand. At the same time, the sand screened from the material frame 6 can be screened again by the screen plate 2. The first chain disc 301 can drive the second chain disc 702 to rotate through the chain 701. At this time, the second chain disc 702 drives the reciprocating screw 801 to rotate in the limiting cylinder 8. Then, the drive block 802 on the reciprocating screw 801 can drive the cleaning push plate 803 to move longitudinally back and forth in the screening chamber 1. At this time, the cleaning push plate 803 can screen the sand at the top of the screen plate 2 again and clean the upper surface of the screen plate 2 and the lower surface of the material frame 6.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sand screening device for engineering construction, comprising a screening bin (1), characterized in that: A sieve plate (2) is detachably installed inside the right side of the screening chamber (1). A drive motor (3) is installed at the center of the rear end of the screening chamber (1). A first chain disc (301) is installed at the output shaft end of the drive motor (3). A toggle block (302) is fixedly connected to the front end of the first chain disc (301). A stirring blade (4) is fixedly connected to the front end of the toggle block (302). A shaking mechanism (5) is provided on the left and right sides of the rear end of the screening chamber (1). A screening frame (6) is provided at the front end of the shaking mechanism (5). A cleaning mechanism (7) is also included. The cleaning mechanism (7) is used to clean the upper surface of the sieve plate (2) and the lower surface of the screening frame (6).

2. The sand screening device for engineering construction according to claim 1, characterized in that: The top of the left and right sides inside the screening chamber (1) is fixed with a first guide block (101). The bottom of the screening chamber (1) is inclined from right to left. The bottom of the left side of the screening chamber (1) is provided with a sand outlet (102). The screening chamber (1) and the screen plate (2) are fixed by bolts and threads.

3. The sand screening device for engineering construction according to claim 1, characterized in that: The shaking mechanism (5) includes movable grooves (501) on the left and right sides of the rear end of the screening bin (1). A slide rod (502) is fixedly connected to the center of the movable groove (501). A slider (503) is slidably connected to the outside of the slide rod (502). A spring (504) is fixedly connected to the right side of the slider (503). A moving block (505) is fixedly connected to the front end of the slider (503). The front ends of the two moving blocks (505) are fixedly connected to the screening frame (6).

4. A sand screening device for engineering construction according to claim 1, characterized in that: The screen frame (6) has a through groove (601) at the center of both the front and rear ends. The through groove (601) provides space for the stirring blade (4) to move. A second guide block (602) is fixed at the center of both the front and rear ends inside the screen frame (6). The second guide block (602) is located at the top of the through groove (601) to prevent sand from passing through the through groove (601).

5. A sand screening device for engineering construction according to claim 1, characterized in that: The cleaning mechanism (7) includes a chain (701) externally meshed with a first chain disc (301), and a second chain disc (702) internally meshed with the bottom end of the chain (701). The rear end of the second chain disc (702) rotates in the screening chamber (1). A limiting cylinder (8) is fixedly connected to the middle position on the left side inside the screening chamber (1). A reciprocating screw (801) is rotatably connected to the center position inside the limiting cylinder (8). The rear end of the reciprocating screw (801) is fixedly connected to the second chain disc (702). A driving block (802) slides inside the limiting cylinder (8). A through hole adapted to the reciprocating screw (801) is opened on the driving block (802). A pin is fixedly connected in the through hole. The head of the pin is slidably connected in the reciprocating thread groove on the reciprocating screw (801). A cleaning push plate (803) is fixedly connected to the lower surface of the driving block (802).

6. A sand screening device for engineering construction according to claim 5, characterized in that: The upper surface of the cleaning push plate (803) is attached to the lower surface of the screen frame (6), and the lower surface of the cleaning push plate (803) is attached to the upper surface of the screen plate (2).

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