Self-cleaning sand screening equipment

Abstract

The utility model relates to the technical field of sand screening equipment, in particular to self-cleaning sand screening equipment which comprises a screening box, an opening is formed in one end of the screening box, a storage cavity is formed in the screening box, a screen is arranged at the top end of the screening box, a plurality of vibration motors are arranged at the bottom end of the screen, and vertical plates are symmetrically arranged at the top end of the screening box. The two vertical plates are located on the two sides of the screen correspondingly, an upper scraping plate is slidably arranged between the two vertical plates, a lower scraping plate is slidably arranged in the storage cavity, sliding blocks are symmetrically arranged on the lower scraping plate, sliding ways matched with the sliding blocks are arranged on the inner wall of the storage cavity, rotatable driving rods are arranged on the sliding blocks in a threaded and penetrating mode, and telescopic pieces are arranged at the top ends of the sliding blocks. Matching grooves matched with the telescopic pieces are formed in the limiting blocks, and the top end of the lower scraper is elastically connected with a plurality of ejector blocks. Therefore, the sand screening device can screen sand quickly and efficiently, sundries accumulated on the screen can be cleaned in time, meanwhile, the manufacturing and maintenance cost is reduced, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening equipment, in particular to a self-cleaning sand screening equipment. Background Art

[0002] Sand is one of the more commonly used materials in civil engineering construction. The quality of sand affects the quality of the project. Therefore, the sand screening step is extremely important. In order to meet the use requirements of sand, the sand usually needs to be screened before construction. With the development of technology, sand screening equipment has gradually replaced manual sand screening, greatly improving the efficiency of sand screening.

[0003] At present, some existing sand screening equipment, such as the patent with publication number CN212442036U, discloses an environmentally friendly sand screening equipment for construction in the field of highway engineering, including a bottom plate, a sand screening box is fixedly connected to the upper surface of the bottom plate, a feed port is opened on the top of the sand screening box, and a funnel is fixedly connected to the feed port, and two symmetrically distributed crushing rollers are arranged at the bottom of the funnel, and the two crushing rollers are respectively rotatably connected to the front and rear sides of the sand screening box through a first rotating shaft, a vibration motor is fixedly connected to the right outer wall of the sand screening box, and the bottom of the output end of the vibration motor is rotatably connected to a first sliding block, the left inner wall of the sand screening box is rotatably connected to a first sand screening board, and a shaft connected to the first sand screening board is opened on the right side of the sand screening box. Corresponding to the first movable opening, the right side of the first sand screening plate passes through the first movable opening and extends to the outside of the sand screening box, a first slide groove corresponding to the first slider is opened on the upper surface of the right side of the first sand screening plate, and a first connecting port is opened inside the first sand screening plate, and the first connecting port is fixedly connected to the first sand screening net. By arranging the first sand screening plate and the second sand screening plate in the sand screening box, and a vibration motor is arranged on the first sand screening plate, the sand can be fully screened, which can improve the efficiency of sand screening. However, the structure of the above-mentioned device is relatively complicated, and the manufacturing and maintenance costs are high. In addition, during the sand screening process, debris (large particles of sand or gravel, etc.) are easily accumulated on the screen, which delays the screening time and reduces the screening efficiency.

[0004] How to screen sand quickly and efficiently, clean up the debris accumulated on the screen in time, reduce manufacturing and maintenance costs, and improve screening efficiency has become a technical problem that needs to be broken through.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of the utility model is to provide a self-cleaning sand screening equipment, which has a simple structure, is easy to use, can screen sand quickly and efficiently, and can promptly clean up the debris accumulated on the screen, while reducing manufacturing and maintenance costs and improving screening efficiency.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a self-cleaning sand screening equipment, including a screening box, one end of the screening box is open, a storage cavity is provided inside the screening box, a screen is provided at the top of the screening box, a plurality of vibration motors are provided at the bottom end of the screen, and vertical plates are symmetrically provided at the top of the screening box, the two vertical plates are respectively located on both sides of the screen, and an upper scraper is slidably provided between the two vertical plates.

[0008] A lower scraper is slidably provided in the storage cavity, and sliders are symmetrically provided on the lower scraper. A slideway cooperating with the slider is provided on the inner wall of the storage cavity, and a rotatable driving rod is threaded through the slider. A telescopic part is provided on the top of the slider, and a matching groove cooperating with the telescopic part is provided on the limit block. A plurality of top blocks are elastically connected to the top of the lower scraper.

[0009] According to the self-cleaning sand screening equipment of the utility model, the bottom ends of the top blocks are inserted into the lower scraper plate, plug blocks are symmetrically provided on the top blocks inside the lower scraper plate, slots cooperating with the plug blocks are provided inside the lower scraper plate, the plug blocks are slidably arranged in the slots, and elastic parts are provided between the plug blocks and the slots.

[0010] According to the self-cleaning sand screening equipment of the utility model, the elastic member is a spring.

[0011] According to the self-cleaning sand screening device of the utility model, a shielding sheet is provided between the sliding block and the slideway on the inner wall of the storage chamber.

[0012] According to the self-cleaning sand screening equipment of the utility model, the shielding sheet is an accordion curtain.

[0013] According to the self-cleaning sand screening equipment of the utility model, a limit block is provided at one end of the upper scraper plate close to the vertical plate, and a limit groove cooperating with the limit block is provided on the vertical plate, and the limit block is slidably arranged in the limit groove.

[0014] According to the self-cleaning sand screening equipment of the utility model, the driving rods are all rotatably connected in the slideway, and one end of the driving rods is connected to the driving member, and the driving member is connected to the screening box.

[0015] The purpose of the utility model is to provide a self-cleaning sand screening equipment, including an upper scraper and a lower scraper. The upper scraper and the lower scraper cooperate with each other to clean up the debris accumulated on the screen in time, while reducing the manufacturing and maintenance costs and improving the screening efficiency; a shielding sheet is provided between the slider and the slide on the inner wall of the storage chamber, and during the movement of the lower scraper, the shielding sheet always covers the slide to prevent sand from entering the slide; as the lower scraper moves, the top block continuously extends and retracts into the lower scraper, hitting the screen, further preventing the screen from being blocked. In summary, the beneficial effects of the utility model are: it can quickly and efficiently screen sand, can clean up the debris accumulated on the screen in time, while reducing the manufacturing and maintenance costs and improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the structural diagram of the utility model;

[0017] Figure 2 This is the structural diagram of the upper scraper;

[0018] Figure 3 It is the longitudinal section view at the top block;

[0019] In the figure: 1-screening box, 11-storage chamber, 2-vertical plate, 21-limiting groove, 211-avoidance groove, 3-screen, 4-upper scraper, 41-limiting block, 42-matching groove, 5-lower scraper, 51-slider, 52-top block, 6-elastic part, 7-telescopic part, 8-driving rod, 9-shielding plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" 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 an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0023] See also Figure 1 to Figure 3 The utility model provides a self-cleaning sand screening equipment, including a screening box 1, one end of the screening box 1 is open, a storage chamber 11 is arranged inside the screening box 1, a screen 3 is arranged at the top of the screening box 1, and a plurality of vibration motors are arranged at the bottom of the screen 3 (installing vibration motors on the screen 3 to facilitate screening is a mature prior art in this field, and is also a conventional means for those skilled in the art, which will not be repeated here), to increase the falling speed of sand, and during screening, the sand falls into the storage chamber 11 after passing through the screen 3, and the storage chamber 11 can temporarily store a part of the screened sand, and a vertical plate 2 is symmetrically arranged at the top of the screening box 1, and the two vertical plates 2 are respectively located on both sides of the screen 3, and an upper scraper 4 is slidably arranged between the two vertical plates 2 (the upper scraper 4 is provided with a limit block 41 at one end close to the vertical plate 2, and the vertical plate 2 is provided with a limit groove 21 cooperating with the limit block 41, and the limit block 41 is slidably arranged in the limit groove 21).

[0024] See also Figure 1 to Figure 3, a lower scraper 5 is slidably provided in the storage chamber 11 (a slider 51 is symmetrically provided on the lower scraper 5, a slideway matching the slider 51 is provided on the inner wall of the storage chamber 11, and the slider 51 is slidably provided in the slideway), a driving rod 8 is threadedly penetrated on the slider 51, the driving rod 8 is rotatably connected in the slideway, and one end of the driving rod 8 is connected to a driving member (not shown in the figure), and the driving member is connected to the screening box 1, and the driving member can drive the driving rod 8 to rotate, and the two driving members are controlled so that the driving members drive the two driving rods 8 to rotate synchronously at the same speed, the lower scraper 5 cannot rotate with the driving rod 8, and can only perform lifting and lowering movements, and a telescopic member 7 is provided on the top of the slider 51 (an avoidance space is provided inside the inner wall of the screening box 1 to allow the telescopic member 7 to move), and a matching groove 42 matching the telescopic member 7 is provided on the limit block 41, and the limit groove 21 The output end of the telescopic member 7 extends upward, passes through the avoidance groove 211 and enters the matching groove 42, so that when the lower scraper 5 moves, the upper scraper 4 can be driven to move; the top of the lower scraper 5 is elastically connected with a plurality of top blocks 52 (the bottom ends of the top blocks 52 are all inserted into the lower scraper 5, and the top blocks 52 inside the lower scraper 5 are symmetrically provided with plug blocks, and the lower scraper 5 is provided with slots matching the plug blocks, and the plug blocks are slidably arranged in the slots, and elastic members 6 are provided between the plug blocks and the slots). As the lower scraper 5 moves, the top blocks 52 abut against the screen 3. Due to the ups and downs at the bottom end of the screen 3 (due to gravity or other factors), the top blocks 52 are continuously extended and retracted into the lower scraper 5 under the action of the elastic member 6, hitting the screen 3, thereby further preventing the screen 3 from being blocked.

[0025] See also Figure 1 to Figure 3 Preferably, the driving member is a rotating motor and the telescopic member 7 is an electric cylinder to provide power for the device.

[0026] See also Figure 1 to Figure 3 Preferably, the matching groove 42 is a waist-shaped groove (oblong), which facilitates the matching between the telescopic member 7 and the matching groove 42.

[0027] See also Figure 1 to Figure 3 Preferably, the elastic member 6 is a spring to provide return power.

[0028] See also Figure 1 to Figure 3 Preferably, a shielding sheet 9 is provided between the slider 51 and the slide on the inner wall of the storage chamber 11. During the movement of the lower scraper 5, the shielding sheet 9 always covers the entire slide to prevent sand from entering the slide.

[0029] See also Figure 1 to Figure 3 Preferably, the shielding sheet 9 is an accordion curtain.

[0030] See also Figure 1 to Figure 3, make the lower scraper 5 located at the end of the storage chamber 11 away from the opening, make the upper scraper 4 located at the top of the opening of the storage chamber 11, turn on the vibration motor to start screening the sand, after the sand screening is completed, turn off the vibration motor, turn on the driving member (the two driving members are synchronized and have the same speed), use the lower scraper 5 to push the sand in the storage chamber 11 out of the storage chamber 11, when the sand in the storage chamber 11 is completely pushed out, turn off the driving member, the lower scraper 5 is just located below the upper scraper 4, turn on the telescopic member 7 (the two telescopic members 7 are synchronized and have the same speed), and let the top of the telescopic member 7 penetrate into the matching groove 4 2. Turn on the driving member, and use the lower scraper 5 to drive the upper scraper 4 to move. When the upper scraper 4 pushes all the debris on the screen 3, the driving member is reversed, and the lower scraper 5 is used to drive the upper scraper 4 to return to the initial position of the upper scraper 4, and then the driving member is turned off. At this time, the telescopic member 7 is disengaged from the matching groove 42, and the driving member is reversed again. When the lower scraper 5 returns to the initial position, one cleaning is completed (a controller can be set between the driving member and the telescopic member 7 to achieve regular automatic cleaning. Using a controller to control the power source is a mature existing technology and will not be repeated here).

[0031] The utility model provides a self-cleaning sand screening equipment, including an upper scraper and a lower scraper. The upper scraper and the lower scraper cooperate with each other to clean up the debris accumulated on the screen in time, while reducing the manufacturing and maintenance costs and improving the screening efficiency; a shielding sheet is provided between the slider and the slide on the inner wall of the storage chamber, and during the movement of the lower scraper, the shielding sheet always covers the slide to prevent sand from entering the slide; as the lower scraper moves, the top block continuously extends and retracts into the lower scraper, hitting the screen, further preventing the screen from being blocked. In summary, the beneficial effects of the utility model are: it can quickly and efficiently screen sand, can clean up the debris accumulated on the screen in time, while reducing the manufacturing and maintenance costs and improving the screening efficiency.

[0032] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A self-cleaning sand screening device, characterized in that: The invention comprises a screening box, one end of which is open, a storage cavity is arranged inside the screening box, a screen is arranged at the top of the screening box, a plurality of vibration motors are arranged at the bottom of the screen, vertical plates are symmetrically arranged at the top of the screening box, two vertical plates are respectively located at two sides of the screen, and an upper scraper is slidably arranged between the two vertical plates; A lower scraper is slidably provided in the storage cavity, and sliders are symmetrically provided on the lower scrapers. A slideway cooperating with the slider is provided on the inner wall of the storage cavity, and a rotatable driving rod is threaded through the slider. A telescopic part is provided on the top of the slider, and a limit block is provided at one end of the upper scraper close to the vertical plate, and a matching groove cooperating with the telescopic part is provided on the limit block. A plurality of top blocks are elastically connected to the top of the lower scraper.

2. The self-cleaning sand screening equipment according to claim 1, characterized in that: The bottom ends of the top blocks are inserted into the lower scraper plate, and the top blocks inside the lower scraper plate are symmetrically provided with plug blocks. The lower scraper plate is provided with slots that cooperate with the plug blocks. The plug blocks are slidably arranged in the slots, and elastic parts are provided between the plug blocks and the slots.

3. The self-cleaning sand screening equipment according to claim 2, characterized in that: The elastic member is a spring.

4. The self-cleaning sand screening equipment according to claim 1, characterized in that: A shielding sheet is provided between the sliding block and the slideway on the inner wall of the storage cavity.

5. The self-cleaning sand screening equipment according to claim 4, characterized in that: The shielding sheet is an accordion curtain.

6. The self-cleaning sand screening equipment according to claim 1, characterized in that: The vertical plates are all provided with limiting grooves matched with the limiting blocks, and the limiting blocks are all slidably arranged in the limiting grooves.

7. The self-cleaning sand screening equipment according to claim 1, characterized in that: The driving rods are all rotatably connected in the slideway, and one end of the driving rods is connected to the driving member, and the driving member is connected to the screening box.

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