A sand screening device for construction engineering

Abstract

The utility model discloses a construction engineering sand screening device, comprising a tank body, wherein a mounting frame is arranged near the center position inside the tank body, a fixing block is inlaid and installed between the inner wall and the outer wall of the mounting frame, a sand screening plate is connected between the two fixing blocks, a coarse sand cavity is opened inside the mounting frame, a first outlet is opened at the bottom of the coarse sand cavity, a fine sand cavity is opened between the outer side of the mounting frame and the inner wall of the tank body, a second outlet is opened at the bottom of the fine sand cavity, a rotating shaft is arranged at the center of the coarse sand cavity, a motor is installed at the bottom of the rotating shaft, and a stirring paddle is fixedly connected to the surface of the rotating shaft; in the construction engineering sand screening device, the fixing block in the mounting frame can be taken out, and the sand screening plate can be taken out together, and the sand screening plate can be removed from the fixing block, so that the blocked sieve hole can be cleared, and a new sand screening plate can also be replaced to screen sand of other mesh numbers.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a sand screening device for construction engineering. Background Art

[0002] Construction projects refer to the engineering entities formed by the construction of various types of buildings and their ancillary facilities and the installation of supporting lines, pipelines, and equipment. "Buildings" refer to projects with roofs, beams, columns, walls, foundations, and internal spaces that can meet people's needs for production, residence, study, and public activities. The sand screening machine imitates the working principle of artificial sand screening by using an inclined screen, so that the sand material repeatedly rolls and slides to be fully discrete and separated; for example, the prior art: CN215140427U, a construction engineering sand screening device, including a shell and a recovery device, a bottom plate is arranged at the lower inner side of the shell, a recovery device is installed above the bottom plate, a second guide groove is installed in the middle of the recovery device, a first guide groove is installed at the upper inner side of the shell, the lower right side of the first guide groove is fixedly connected to the support rod through a shock absorbing device, and a third guide groove is installed in the middle below the first guide groove. The utility model utilizes the recovery device, when the larger sand particles above the first guide groove enter the recovery device through the opening, under the action of the first motor and the transmission belt, the vertical rod drives the clamping plate to rotate, so that the roller crushes and grinds the sand particles above the metal mesh, and the second spring contracts to squeeze the sand particles, so that the sand particles have a lower particle size and enter the screening slot, so that the sand particles that have not passed through the first screen and the sand particles with larger particle size are screened for the second time.

[0003] There are other existing technologies:

[0004] CN217774704U, a sand screening device for construction engineering;

[0005] CN215088845U, a sand screening device for screening sand in construction and civil engineering.

[0006] In the above-mentioned prior art, a construction engineering sand screening device is mentioned, in which a sand screening plate is arranged inside the device and is fixed on the device and is difficult to remove, so it is very troublesome to replace the sand screening plate. Since the mesh size of the sand screening plate is usually fixed, the device can only screen sand and gravel with a fixed mesh size, and the screen holes are easily blocked after the device is used for a long time, which affects the subsequent sand screening efficiency. Utility Model Content

[0007] The purpose of the utility model is to provide a construction engineering sand screening device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a construction engineering sand screening device, including a tank body, characterized in that: a mounting frame is arranged near the center position inside the tank body, a fixing block is inlaid and installed between the inner wall and the outer wall of the mounting frame, a sand screening plate is connected between the two fixing blocks, sieve holes are provided on the surface of the sand screening plate, a coarse sand cavity is provided on the inner side of the mounting frame, a first outlet is provided at the bottom of the coarse sand cavity, a fine sand cavity is provided between the outer side of the mounting frame and the inner wall of the tank body, a second outlet is provided at the bottom of the fine sand cavity, a rotating shaft is arranged at the center of the coarse sand cavity, a motor is installed at the bottom of the rotating shaft, and a stirring paddle is fixedly connected to the surface of the rotating shaft.

[0009] Preferably, a base is provided at the bottom of the sand screening plate, and an oblique chamfer is provided between the base and the sand screening plate.

[0010] Preferably, the sand screening plate is a thin metal mesh, the sand screening plate can be bent, and the sand screening plate can be pulled out from the fixed block.

[0011] Preferably, the bottoms of the coarse sand chamber and the fine sand chamber are provided with an arc, the lowest point of the bottom of the coarse sand chamber is located at the first outlet, and the lowest point of the bottom of the fine sand chamber is located at the second outlet.

[0012] Preferably, the outermost side of the stirring paddle is in close contact with the innermost side of the mounting frame.

[0013] Preferably, four supporting legs are arranged at the bottom of the tank body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The construction engineering sand screening device pours the mixed sand to be screened into the coarse sand chamber, starts the motor to drive the rotating shaft and the stirring paddle to rotate, and throws the mixed sand onto the sand screening plate through the centrifugal force. The fine sand in the mixed sand passes through the sieve holes into the fine sand chamber and is finally discharged through the second outlet. The remaining coarse sand cannot pass through the sand screening plate and is finally discharged through the first outlet at the bottom of the coarse sand chamber, thereby realizing the classification of the mixed sand.

[0016] 2. The fixed block in the mounting frame of the construction engineering sand screening device can be taken out, and the sand screening plate can be taken out together. By removing the sand screening plate from the fixed block, the clogged sieve holes can be cleared, and a new sand screening plate can be replaced to screen sand of other mesh sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the sand screening structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the stirring structure of the utility model.

[0022] In the figure: 1. tank body; 2. mounting frame; 3. fixing block; 4. sand screening plate; 5. rotating shaft; 6. supporting foot; 101. coarse sand chamber; 102. first outlet; 103. fine sand chamber; 104. second outlet; 301. base; 501. motor; 502. stirring paddle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: See Figure 1 The utility model provides a technical solution: a sand screening device for construction engineering.

[0025] Among them, a mounting frame 2 is arranged near the center position inside the tank body 1, a fixing block 3 is inlaid and installed between the inner wall and the outer wall of the mounting frame 2, a sand screening plate 4 is connected between the two fixing blocks 3, and sieve holes are provided on the surface of the sand screening plate 4, a coarse sand cavity 101 is provided on the inner side of the mounting frame 2, and a first outlet 102 is provided at the bottom of the coarse sand cavity 101, a fine sand cavity 103 is provided between the outer side of the mounting frame 2 and the inner wall of the tank body 1, and a second outlet 104 is provided at the bottom of the fine sand cavity 103, a rotating shaft 5 is arranged at the center of the coarse sand cavity 101, a motor 501 is installed at the bottom of the rotating shaft 5, and a stirring paddle 502 is fixedly connected to the surface of the rotating shaft 5.

[0026] In this embodiment, the mounting frame 2 is divided into two layers, the inner and outer layers, the fixing block 3 is inserted between the two layers, the sand screening plate 4 is bent into a circle, and is fixed through the center position of the fixing block 3, the mixed sand to be screened is poured into the coarse sand chamber 101, the motor 501 is started to drive the rotating shaft 5 to rotate, the rotating shaft 5 drives the stirring paddle 502 to rotate, and the mixed sand is thrown onto the sand screening plate 4 by centrifugal force, the fine sand in the mixed sand passes through the sieve holes on the sand screening plate 4 into the fine sand chamber 103, falls by gravity, and finally gathers at the second outlet 104 at the bottom and is discharged, and the rest Coarse sand cannot pass through the sand screening plate 4. With the repeated stirring of the stirring paddle 502, the coarse sand falls by gravity and is finally discharged through the first outlet 104 at the bottom of the coarse sand chamber 101. The first outlet 102 discharges coarse sand, and the second outlet 104 discharges fine sand. A collecting container is placed under the corresponding outlet to collect the mixed sand, thereby separating the mixed sand. The fixed block 3 in the mounting frame 2 can be taken out, and the sand screening plate 4 can be taken out together. The sand screening plate 4 can be removed from the fixed block 3 to clear the clogged sieve holes, and a new sand screening plate 4 can be replaced to screen sand of other mesh sizes.

[0027] Among them, a base 301 is arranged at the bottom of the sand screening plate 4, and an oblique chamfer is arranged between the base 301 and the sand screening plate 4.

[0028] In this embodiment, the bottom of the sand screening plate 4 is inserted into the base 301. The coarse sand that cannot pass through the sieve holes falls by gravity, and then rebounds back to the stirring paddle 502. Then, the stirring paddle 502 rotates and is thrown onto the sand screening plate 4 through centrifugal force. The screening is repeated in this way until it finally reaches the bottom of the sand screening plate 4 and flows back to the coarse sand chamber 101 through the oblique chamfers, preventing sand from embedding in the bottom of the mounting frame 2 and causing blockage.

[0029] The sand screening plate 4 is a thin metal mesh, the sand screening plate 4 can be bent, and the sand screening plate 4 can be pulled out from the fixing block 3 .

[0030] In this embodiment, the thin metal mesh has a longer service life than the general cloth mesh, is not easy to be damaged, has a stronger resilience when bent, and is more convenient to replace the sand screening plate 4.

[0031] The coarse sand chamber 101 and the fine sand chamber 103 have arcs at their bottoms. The lowest point of the coarse sand chamber 101 is located at the first outlet 102 , and the lowest point of the fine sand chamber 103 is located at the second outlet 104 .

[0032] In this embodiment, the bottoms of the coarse sand chamber 101 and the fine sand chamber 103 are both very smooth, and the bottom surfaces of the two chambers are inclined in opposite directions, ensuring that the corresponding sands flow out to the corresponding outlets after being gathered.

[0033] The outermost side of the stirring paddle 502 is in close contact with the innermost side of the mounting frame 2 .

[0034] In this embodiment, the coarse sand thrown onto the sand screening plate 4 by centrifugal force will rebound back to the stirring paddle 502. The blades of the stirring paddle 502 fit the inner side of the mounting frame 2, so that the distance between the sand screening plate 4 and the stirring paddle 502 is small enough to minimize the amount of sand that falls directly from the sand screening plate 4 to the bottom, so that the mixed sand can be screened as many times as possible, thereby improving the screening efficiency.

[0035] Among them, four supporting legs 6 are arranged at the bottom of the tank body 1.

[0036] In this embodiment, four supporting legs 6 support the tank body 1, and the length of the supporting legs 6 is higher than the extension plates of the first outlet 102 and the second outlet 104, so as to facilitate the insertion of the collecting device under the corresponding outlet.

[0037] Working principle: Pour the mixed sand to be screened into the coarse sand chamber 101, start the motor 501 to drive the rotating shaft 5 to rotate, and the rotating shaft 5 drives the stirring paddle 502 to rotate, and the mixed sand is thrown onto the sand screening plate 4 by centrifugal force, and the fine sand in the mixed sand passes through the sieve holes on the sand screening plate 4 into the fine sand chamber 103, falls by gravity, and finally gathers at the second outlet 104 at the bottom and is discharged. The remaining coarse sand cannot pass through the sand screening plate 4, and with the repeated stirring of the stirring paddle 502, it falls by gravity and is finally discharged through the first outlet 104 at the bottom of the coarse sand chamber 101. The first outlet 102 discharges coarse sand, and the second outlet 104 discharges fine sand. A collecting container is placed under the corresponding outlet to collect the sand, so as to separate the mixed sand, and the fixed block 3 in the mounting frame 2 can be taken out, and the sand screening plate 4 is taken out together. The sand screening plate 4 is removed from the fixed block 3, the blocked sieve holes can be cleared, and a new sand screening plate 4 can be replaced to screen sand of other mesh sizes.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction engineering sand screening device, comprising a tank body (1), characterized in that: A mounting frame (2) is arranged near the center of the tank body (1), a fixing block (3) is inlaid and installed between the inner wall and the outer wall of the mounting frame (2), a sand screening plate (4) is connected between the two fixing blocks (3), and the surface of the sand screening plate (4) is provided with screening holes, a coarse sand cavity (101) is arranged inside the mounting frame (2), and a first outlet (102) is arranged at the bottom of the coarse sand cavity (101), a fine sand cavity (103) is arranged between the outer side of the mounting frame (2) and the inner wall of the tank body (1), and a second outlet (104) is arranged at the bottom of the fine sand cavity (103), a rotating shaft (5) is arranged at the center of the coarse sand cavity (101), a motor (501) is installed at the bottom of the rotating shaft (5), and a stirring paddle (502) is fixedly connected to the surface of the rotating shaft (5).

2. A construction engineering sand screening device according to claim 1, characterized in that: A base (301) is provided at the bottom of the sand screening plate (4), and an oblique chamfer is provided between the base (301) and the sand screening plate (4).

3. A construction engineering sand screening device according to claim 1, characterized in that: The sand screening plate (4) is a thin metal mesh, the sand screening plate (4) can be bent, and the sand screening plate (4) can be pulled out from the fixing block (3).

4. A construction engineering sand screening device according to claim 1, characterized in that: The coarse sand chamber (101) and the fine sand chamber (103) have curved bottoms; the lowest point of the bottom of the coarse sand chamber (101) is located at the first outlet (102), and the lowest point of the bottom of the fine sand chamber (103) is located at the second outlet (104).

5. A construction engineering sand screening device according to claim 1, characterized in that: The outermost side of the stirring paddle (502) is in close contact with the innermost side of the mounting frame (2).

6. A construction engineering sand screening device according to claim 1, characterized in that: Four supporting legs (6) are arranged at the bottom of the tank body (1).

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