Auxiliary tool for screening fine sand

Abstract

The utility model belongs to the technical field of roadbed and pavement water stability engineering test detection, and particularly relates to a fine sand screening auxiliary tool which comprises a tray with an open top end, a discharge port is formed in the bottom of the side face of the tray, and a screen drum with an open top end is arranged in the tray. And a spring capable of driving the tray and the screen drum to vibrate up and down is arranged at the bottom of the tray. The fine sand screening device has the advantages of being simple in structure, convenient to operate and capable of preventing wind interference and guaranteeing fine sand screening precision.

Description

A tool for screening fine sand Technical Field

[0001] This utility model relates to the field of testing and detection technology for roadbed and pavement water-stabilized engineering; specifically, this utility model relates to an auxiliary tool for screening fine sand. Background Technology

[0002] Testing and inspection during construction play a crucial role, as their accuracy and scientific rigor directly impact the overall project quality and are of great significance to construction safety and quality. Traditional sand screening tools for roadbed and pavement water-stabilized testing can affect the purity of the screened sand in windy conditions, thus affecting the accuracy of the test. Furthermore, the traditional method involves manually shaking the sand screen, which is inefficient. Summary of the Invention

[0003] In view of this, the present invention provides an auxiliary tool for screening fine sand, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objective, this utility model provides an auxiliary tool for screening fine sand, including a tray with an open top, a discharge port at the bottom of the side of the tray, a screen cylinder with an open top inside the tray, and a spring at the bottom of the tray that can drive the tray and screen cylinder to vibrate up and down.

[0005] In the aforementioned fine sand screening auxiliary tool, optionally, an arc-shaped baffle capable of opening or closing the discharge port is provided inside the discharge port, and the arc-shaped baffle slides in cooperation with the tray.

[0006] In the aforementioned fine sand screening auxiliary tool, optionally, the bottom end of the spring is fixedly connected to a base.

[0007] In the aforementioned fine sand screening auxiliary tool, optionally, a guide rod is fixedly provided at the center of the upper surface of the base, and the top end of the guide rod passes through the center of the tray and the screen cylinder in sequence.

[0008] In the aforementioned fine sand screening auxiliary tool, optionally, a plurality of spiral grooves arranged in a circular array are provided on the inner side of the tray, and a slider is slidably disposed in the spiral groove, and the slider is fixedly disposed on the outer side wall of the screen cylinder.

[0009] In the aforementioned auxiliary tool for screening fine sand, optionally, the guide rod surface is provided with a longitudinal guide groove, the inner bottom wall of the screen cylinder is rotatably mounted with a sleeve sleeve fitted outside the guide rod, and the sleeve sleeve slides in cooperation with the longitudinal guide groove, the outer surface of the sleeve sleeve is provided with a plurality of stirring plates distributed in a centrally symmetrical manner, and the bottom of the stirring plates is provided in a forked comb shape.

[0010] Compared with the prior art, the fine sand screening auxiliary tool of this utility model can improve the purity of sand by wrapping the screen cylinder (3) with the tray (1), thereby improving the accuracy of the test data. In addition, it can prevent the sand from being blown away in windy conditions, thus improving the testing efficiency. Attached Figure Description

[0011] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0012] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 is a structural schematic diagram of the tray of this utility model;

[0014] Figure 3 is a structural view of the sieve cylinder of this utility model;

[0015] Figure 4 is a structural schematic diagram of the guide rod, rod sleeve and stirring plate of this utility model;

[0016] Figure 5 is a partial cross-sectional view of Figure 1 of this utility model.

[0017] Attached reference numerals: 1-Tray; 2-Discharge port; 3-Screen cylinder; 4-Spring; 5-Arc baffle; 6-Base; 7-Guide rod; 8-Spiral groove; 9-Slider; 10-Longitudinal guide groove; 11-Rod sleeve; 12-Agitator plate. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] As shown in Figures 1 to 5, this utility model provides an auxiliary tool for screening fine sand, including a tray 1 with an open top, a discharge port 2 at the bottom of the side of the tray 1, a screen cylinder 3 with an open top inside the tray 1, and a spring 4 at the bottom of the tray 1 that can drive the tray 1 and the screen cylinder 3 to vibrate up and down.

[0020] In this embodiment, the tray 1 surrounds the screen cylinder 3, ensuring that the fine sand is not affected by wind during the screening process, thus improving screening accuracy. In use, the sand to be screened is first placed into the screen cylinder 3 from the top, then the tray 1 is pressed down to compress the spring 4, and then the tray 1 is released. The tray 1 and the sand cylinder automatically vibrate up and down under the action of the spring 4, thus achieving the fine sand screening operation.

[0021] Furthermore, an arc-shaped baffle 5 is provided inside the discharge port 2, which can be opened or closed, and the arc-shaped baffle 5 slides in conjunction with the tray 1. By setting the arc-shaped baffle 5, the discharge port 2 can be closed during the screening of fine sand, so as to achieve 360° all-round windproof performance and improve the screening effect of fine sand. After screening is completed, push the arc-shaped baffle 5 to open the discharge port 2, and then the fine sand produced by screening is directly discharged from the discharge port 2 from the tray 1.

[0022] Specifically, in this embodiment, the central angle of the arc-shaped baffle 5 is greater than 180°, and the circular angle of the discharge port 2 is 90°. The surface of the tray 1 facing the discharge port 2 is provided with a groove for the arc-shaped baffle 5 to enter. By rotating the arc-shaped baffle 5 into the groove, the discharge port 2 is opened.

[0023] The bottom end of the spring 4 is fixedly connected to the base 6. The base 6 serves as the supporting foundation for the entire fine sand screening auxiliary tool.

[0024] A guide rod 7 is fixedly installed at the center of the upper surface of the base 6, and the top of the guide rod 7 passes through the center of the tray 1 and the screen cylinder 3 in sequence. By setting the guide rod 7, the tray 1 and the screen cylinder 3 can be guided, so that the tray 1 and the screen cylinder 3 can maintain up and down oscillation and improve stability.

[0025] Multiple spiral grooves 8 arranged in a circular array are provided on the inner side of the tray 1. A slider 9 is slidably disposed within the spiral grooves 8, and the slider 9 is fixedly disposed on the outer side wall of the screen cylinder 3. By setting the spiral grooves 8 and the slider 9, when the tray 1 and the screen cylinder 3 are oscillating up and down, the screen cylinder 3 can move up and down relative to the tray 1 within the tray 1. At this time, the screen cylinder 3 can rotate within the tray 1, making the sand distribution within the screen cylinder 3 more uniform, thereby improving the fine sand screening efficiency.

[0026] Furthermore, the guide rod 7 has a longitudinal guide groove 10 on its surface, and the inner bottom wall of the screen cylinder 3 is rotatably mounted with a rod sleeve 11 sleeved on the outside of the guide rod 7. The rod sleeve 11 is slidably engaged with the longitudinal guide groove 10. The outer surface of the rod sleeve 11 is provided with a plurality of stirring plates 12 that are centrally symmetrically distributed, and the bottom of the stirring plate 12 is configured as a forked comb.

[0027] During the compression of spring 4 by pressing down on tray 1, the sleeve 11 is supported by longitudinal guide groove 10, and the rotational cooperation between sleeve 11 and screen cylinder 3 prevents screen cylinder 3 and sleeve 11 from descending with tray 1. At this time, the cooperation between spiral groove 8 and slider 9 causes screen cylinder 3 to rotate inside tray 1, achieving the effect of uniform sand distribution inside screen cylinder 3.

[0028] During the reset process of spring 4, while tray 1 moves screen cylinder 3 upward synchronously through spiral groove 8, screen cylinder 3 moves downward relative to tray 1 under its own weight, causing screen cylinder 3 to rotate during the oscillation process, further improving the fine sand screening efficiency.

[0029] In the initial state, the screen cylinder 3 is located at its lowest position within the tray 1 under its own weight. The bottom end of the longitudinal guide groove 10 is located below the tray 1, and after the spring 4 is compressed, the screen cylinder 3 is positioned in the middle of the tray 1 in the vertical direction. This arrangement ensures that when the tray 1 is pressed down to its lowest position, the screen cylinder 3 will move upwards and rotate within the tray 1. Furthermore, this ensures that during vibration, the screen cylinder 3 can rotate within the tray 1 under its own weight, improving the fine sand screening effect.

[0030] During the rotation of the screen cylinder 3, the rod sleeve 11 is limited in the circumferential direction by the longitudinal guide groove 10, so neither the rod sleeve 11 nor the stirring plate 12 will rotate. At this time, the sand in the screen cylinder 3 passes through the stirring plate 12 as it rotates with the screen cylinder 3, and is disturbed by the stirring plate 12 and evenly spread inside the screen cylinder 3, further improving its screening performance.

[0031] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. An auxiliary tool for screening fine sand, characterized in that, It includes a tray (1) with an open top, a discharge port (2) is provided at the bottom of the side of the tray (1), a screen cylinder (3) with an open top is provided inside the tray (1), and a spring (4) is provided at the bottom of the tray (1) to drive the tray (1) and the screen cylinder (3) to vibrate up and down.

2. The fine sand screening auxiliary tool according to claim 1, characterized in that, The discharge port (2) is provided with an arc-shaped baffle (5) that can open or close the discharge port (2), and the arc-shaped baffle (5) slides in cooperation with the tray (1).

3. The fine sand screening auxiliary tool according to claim 1, characterized in that, The bottom end of the spring (4) is fixedly connected to the base (6).

4. The fine sand screening auxiliary tool according to claim 2, characterized in that, A guide rod (7) is fixedly installed at the center of the upper surface of the base (6), and the top end of the guide rod (7) passes through the center of the tray (1) and the sieve cylinder (3) in sequence.

5. An auxiliary tool for screening fine sand according to claim 4, characterized in that, The inner side of the tray (1) is provided with a plurality of spiral grooves (8) arranged in a circular array. A slider (9) is slidably arranged in the spiral grooves (8), and the slider (9) is fixedly arranged on the outer side wall of the sieve cylinder (3).

6. The fine sand screening auxiliary tool according to claim 5, characterized in that, The guide rod (7) has a longitudinal guide groove (10) on its surface. The inner bottom wall of the screen cylinder (3) is rotatably fitted with a rod sleeve (11) that is sleeved on the outside of the guide rod (7). The rod sleeve (11) is slidably engaged with the longitudinal guide groove (10). The outer surface of the rod sleeve (11) is provided with a plurality of stirring plates (12) that are centrally symmetrically distributed. The bottom of the stirring plate (12) is set in a forked comb shape.

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