Concrete screening device

Abstract

The utility model relates to a concrete screening device, and belongs to the technical field of concrete preparation, the concrete screening device comprises a screening plate, a baffle plate and a limiting plate, the baffle plate is fixedly arranged on the screening plate, the limiting plate is slidably clamped on the screening plate, the limiting plate is located at the horizontal lowest position, a scraping plate is slidably arranged on the screening plate, and the scraping plate slides between the limiting plate and the baffle plate; a gap is reserved between the bottom of the scraping plate and the screening plate; the first driving part is used for driving the scraping plate to slide to drive materials accumulated in front of the scraping plate to move towards the limiting plate; the scraping plate is of a telescopic structure and stretches out and draws back in the direction perpendicular to the sieve plate. The material screening device can improve the material screening effect.

Description

Technical Field

[0001] The present application relates to the technical field of concrete preparation, and in particular to a concrete screening device. Background Art

[0002] Concrete is a common construction material in the construction field. During the production and processing of concrete, in order to ensure the quality of the concrete itself, the staff needs to strictly control its particle size, so a screening device will be used.

[0003] At present, a patent document with authorization announcement number CN213887054U discloses a screening device for concrete processing, including a base, a fixed plate is installed on both sides of the upper surface of the base, a guide rail is installed on one side of the outer wall of the fixed plate, a slider is installed on one side of the outer wall of the guide rail, a sieve plate is arranged on one side of the outer wall of the slider, a baffle is installed on the upper surface of the sieve plate, a slot is arranged on both sides of the inner wall of the baffle, a limit plate is installed inside the slot, a connecting shaft B is installed on both sides of the outer wall of the sieve plate, and both ends of the connecting shaft B pass through the bearing on the fixed plate, a support plate is installed below one side of the outer wall of the fixed plate, a drive motor is installed on the upper surface of the support plate, and the output shaft of the drive motor is connected to the rotating shaft through a coupling. Through the setting of a series of structures, it is convenient to screen the raw materials for concrete processing, and at the same time, it is convenient to collect and process the screened waste, thereby improving work efficiency.

[0004] However, after placing the material on the screen plate, due to the inclination of the screen plate, the material will slide along the lowest horizontal point of the screen plate, causing the material to accumulate at the above location, and when the screen plate vibrates, the vibration amplitude at the lowest horizontal point of the screen plate is small, resulting in a relatively general screening effect on the material. Utility Model Content

[0005] In order to improve the screening effect of materials, the present application provides a concrete screening device.

[0006] The concrete screening device provided in this application adopts the following technical solution:

[0007] A concrete screening device comprises a screen plate, a baffle and a limit plate, wherein the baffle is fixedly arranged on the screen plate, the limit plate is slidably clamped on the screen plate, the limit plate is located at the lowest horizontal point, a scraper is slidably arranged on the screen plate, the scraper slides between the limit plate and the baffle, and a gap is left between the bottom of the scraper and the screen plate. The screening device also comprises a first driving member for driving the scraper to slide and drive the material accumulated in front of the scraper to move toward the limit plate; the scraper is a telescopic structure, and the scraper is telescopic in a direction perpendicular to the screen plate.

[0008] Optionally, the first driving member includes a motor and a lead screw disposed on the vertical plate of the sieve plate. The length direction of the output shaft of the motor is parallel to the length direction of the vertical plate. The lead screw is coaxially disposed on the output shaft of the motor, and the scraper is threadedly connected to the lead screw.

[0009] Optionally, an installation groove is formed in the vertical plate of the sieve plate. The installation groove is formed along a direction parallel to the length direction of the vertical plate. The lead screw is located in the installation groove. Winding shafts are rotatably disposed at both ends in the installation groove. The length direction and the rotation axis of the winding shaft are both perpendicular to the sieve plate. A shielding cloth is wound on the winding shaft, and the free end of the shielding cloth is fixedly disposed on the scraper.

[0010] Optionally, a torsion spring is sleeved on the winding shaft. One side of the torsion spring is fixedly disposed on the winding shaft, and the other side is fixedly disposed on the vertical plate.

[0011] Optionally, sliding blocks are disposed at both vertical ends of the shielding cloth. Sliding grooves for the sliding blocks to slide are formed on both vertical side walls of the installation groove. The sliding blocks are in the shape of a dovetail.

[0012] Optionally, the scraper includes a first plate body threadedly connected to the lead screw and a second plate body slidably sleeved at the bottom of the first plate body. The second plate body slides in a direction perpendicular to the sieve plate. The scraper further includes a second driving member for driving the second plate body to slide.

[0013] Optionally, the second driving member includes an electric push rod disposed on the back of the first plate body. The second plate body is fixedly disposed on the output shaft of the electric push rod.

[0014] Optionally, a plug board is fixedly disposed at the top of the second plate body, and a slot for the plug board to be inserted is formed at the bottom of the first plate body.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. After the material is poured onto the sieve plate, the material accumulates in front of the limiting plate along the inclined direction of the sieve plate. At this time, the scraper is driven to slide by the first driving member. The sliding of the scraper acts on the material and drives the material to move upward above the sieve plate, thereby spreading the material on the sieve plate, so as to facilitate the separation of the material from the sieve plate; the scraper is a telescopic structure, which is convenient for adjusting the distance between the scraper and the sieve plate. Therefore, the scraper slides back and forth, and at the same time, it is convenient for the scraper to spread the material multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall structural schematic diagram of a concrete screening device according to an embodiment of the present application;

[0018] Figure 2 is a cross-sectional view of the scraper in a concrete screening device according to an embodiment of the present application;

[0019] Figure 3 It is a cross-sectional view of the vertical plate of the sieve plate in a concrete screening device according to an embodiment of the present application;

[0020] Figure 4 It is a cross-sectional view of the vertical plate of the sieve plate in a concrete screening device according to an embodiment of the present application;

[0021] Figure 5 is Figure 4 an enlarged schematic view of part A in

[0022] Explanation of reference numerals: 1, sieve plate; 2, baffle; 3, limit plate; 4, scraper; 41, first plate body; 42, second plate body; 5, motor; 6, lead screw; 7, installation groove; 8, winding shaft; 9, shielding cloth; 10, slider; 11, chute; 12, plug board; 13, slot. Detailed implementation manners

[0023] The following will Figures 1-5 make a further detailed description of the present application in conjunction with the attached

[0024] An embodiment of the present application discloses a concrete screening device. Referring to Figure 1 and Figure 2 , the concrete screening device includes a sieve plate 1, a baffle 2 and a limit plate 3. The baffle 2 is fixedly arranged on the sieve plate 1, the limit plate 3 is slidably clamped on the sieve plate 1, the limit plate 3 is located at the lowest horizontal position, a scraper 4 is slidably arranged on the sieve plate 1, the initial position of the scraper 4 is close to the limit plate 3, the scraper 4 slides between the limit plate 3 and the baffle 2, and there is a gap between the bottom of the scraper 4 and the sieve plate 1. The screening device further includes a first driving member for driving the scraper 4 to slide and driving the material accumulated in front of the scraper 4 to move towards the limit plate 3; after the material is poured onto the sieve plate 1, the material accumulates in front of the limit plate 3 along the inclined direction of the sieve plate 1. At this time, the first driving member is used to drive the scraper 4 to slide. The scraper 4 slides and acts on the material, and drives the material to move upward on the sieve plate 1, so as to spread the material on the sieve plate 1, thereby facilitating the separation of the material from the sieve plate 1.

[0025] Referring to Figure 3 , in the embodiment of the present application, the first driving member includes a motor 5 and a lead screw 6 arranged on the vertical plate of the sieve plate 1. The length direction of the output shaft of the motor 5 is parallel to the length direction of the vertical plate, the lead screw 6 is coaxially arranged on the output shaft of the motor 5, and the scraper 4 is threadedly connected to the lead screw 6; when the motor 5 is started, the motor 5 drives the lead screw 6 to rotate, and the rotation of the lead screw 6 drives the scraper 4 to move, which is simple and convenient to operate.

[0026] Referring to Figure 4 and Figure 5, to reduce the possibility of the sieved material jamming the lead screw 6, an installation groove 7 is provided on the vertical plate of the sieve plate 1. The installation groove 7 is opened along the length direction parallel to the vertical plate. The lead screw 6 is located in the installation groove 7. At both ends of the installation groove 7, a winding shaft 8 is rotatably provided. The length direction and the rotation axis of the winding shaft 8 are both perpendicular to the sieve plate 1. A shielding cloth 9 is wound on the winding shaft 8. The free end of the shielding cloth 9 is fixedly arranged on the scraping plate 4. When the lead screw 6 drives the scraping plate 4 to slide, the scraping plate 4 moves to drive the shielding cloth 9 to move. Under the action of the shielding cloth 9, the opening of the installation groove 7 is closed, thereby reducing the possibility of the material entering the installation groove 7, and thus facilitating the driving of the scraping plate 4 to move.

[0027] Refer to Figure 4 and Figure 5 , to facilitate the winding of the shielding cloth 9, a coil spring is sleeved on the winding shaft 8. One side of the coil spring is fixedly arranged on the winding shaft 8, and the other side is fixedly arranged on the vertical plate. When the scraping plate 4 slides to drive the shielding cloth 9 to move, one side of the winding shaft 8 unwinds the shielding cloth 9, and the other side of the winding shaft 8 winds the shielding cloth 9. At this time, under the action of the coil spring, the winding shaft 8 is driven to rotate to wind the shielding cloth 9.

[0028] Refer to Figure 4 and Figure 5 , to improve the closing effect of the shielding cloth 9 on the installation groove 7, sliding blocks 10 are arranged at both vertical ends of the shielding cloth 9. On both vertical side walls of the installation groove 7, sliding grooves 11 for the sliding blocks 10 to slide are opened. The sliding blocks 10 are in the shape of a dovetail. Under the action of the sliding blocks 10, the shielding cloth 9 is slidably clamped on the side wall of the installation groove 7, reducing the possibility of the side of the shielding cloth 9 separating from the side wall of the installation groove 7, and thus improving the closing effect of the shielding cloth 9 on the installation groove 7.

[0029] Refer to Figure 2 , in the embodiment of the present application, the scraping plate 4 is a telescopic structure. The scraping plate 4 expands and contracts in the direction perpendicular to the sieve plate 1. The scraping plate 4 includes a first plate body 41 threadedly connected to the lead screw 6 and a second plate body 42 slidably sleeved at the bottom of the first plate body 41. Further, a plug board 12 is fixedly arranged at the top of the second plate body 42, and a slot 13 for the plug board 12 to be inserted is opened at the bottom of the first plate body 41. The second plate body 42 slides in the direction perpendicular to the sieve plate 1. The scraping plate 4 further includes a second driving member for driving the second plate body 42 to slide. The second driving member includes an electric push rod arranged on the back of the first plate body 41. The second plate body 42 is fixedly arranged on the output shaft of the electric push rod. When adjusting the distance between the scraping plate 4 and the sieve plate 1, the electric push rod is started, and the electric push rod drives the second plate body 42 to move towards the sieve plate 1, which is simple and convenient to operate.

[0030] The implementation principle of the concrete screening device in the embodiment of the present application is as follows:

[0031] After the material is poured onto the sieve plate 1, the material accumulates in front of the limiting plate 3 along the inclined direction of the sieve plate 1. At this time, the first driving member is used to drive the sliding of the scraper 4. The sliding of the scraper 4 acts on the material and drives the material to move upward above the sieve plate 1, thereby spreading the material on the sieve plate 1, so as to facilitate the separation of the material from the sieve plate 1.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A concrete screening device, characterized in that: It includes a sieve plate (1), a baffle plate (2) and a limit plate (3). The baffle plate (2) is fixedly arranged on the sieve plate (1). The limit plate (3) is slidably clamped on the sieve plate (1). The limit plate (3) is at the lowest horizontal position. A scraper (4) is slidably arranged on the sieve plate (1). The scraper (4) slides between the limit plate (3) and the baffle plate (2). There is a gap between the bottom of the scraper (4) and the sieve plate (1). The screening device further includes a first driving member for driving the scraper (4) to slide and drive the material accumulated in front of the scraper (4) to move towards the limit plate (3). The scraper (4) is a telescopic structure, and the scraper (4) expands and contracts in a direction perpendicular to the sieve plate (1).

2. The concrete screening device according to claim 1, characterized in that: The first driving member includes a motor (5) and a lead screw (6) arranged on the vertical plate of the sieve plate (1). The length direction of the output shaft of the motor (5) is parallel to the length direction of the vertical plate. The lead screw (6) is coaxially arranged on the output shaft of the motor (5). The scraper (4) is threadedly connected to the lead screw (6).

3. A concrete screening device according to claim 2, characterized in that: An installation groove (7) is opened on the vertical plate of the sieve plate (1). The installation groove (7) is opened along the length direction parallel to the vertical plate. The lead screw (6) is located in the installation groove (7). Winding shafts (8) are rotatably arranged at both ends in the installation groove (7). The length direction and the rotation axis of the winding shaft (8) are both perpendicular to the sieve plate (1). A shielding cloth (9) is wound on the winding shaft (8). The free end of the shielding cloth (9) is fixedly arranged on the scraper (4).

4. A concrete screening device according to claim 3, characterized in that: A coil spring is sleeved on the winding shaft (8). One side of the coil spring is fixedly arranged on the winding shaft (8), and the other side is fixedly arranged on the vertical plate.

5. A concrete screening device according to claim 3, characterized in that: Sliders (10) are arranged at both vertical ends of the shielding cloth (9). Slide grooves (11) for the sliders (10) to slide are opened on the vertical side walls of the installation groove (7). The sliders (10) are in the shape of a dovetail.

6. The concrete screening device according to claim 2, wherein: The scraper (4) includes a first plate body (41) threadedly connected to the lead screw (6) and a second plate body (42) slidably sleeved at the bottom of the first plate body (41). The second plate body (42) slides in a direction perpendicular to the sieve plate (1). The scraper (4) further includes a second driving member for driving the second plate body (42) to slide.

7. A concrete screening device according to claim 6, characterized in that: The second driving member includes an electric push rod arranged on the back of the first plate body (41). The second plate body (42) is fixedly arranged on the output shaft of the electric push rod.

8. The concrete screening device according to claim 6, characterized in that: A plug board (12) is fixedly arranged at the top of the second plate body (42). A slot (13) for the plug board (12) to be inserted into is opened at the bottom of the first plate body (41).

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