Sand screening device for building construction

Abstract

The utility model relates to the technical field of civil engineering building construction, in particular to a sand screening device for building construction, and solves the problems that in the sand screening process of a sand screening machine for building construction, paper scraps and blocky leaf impurities are easily accumulated in screening holes, and impurities in a sand body are difficult to screen. The sand screening device comprises a feeding port, a fan blade device and a screen device from top to bottom, the left side of the first-stage screen is connected to a motor on the outer side of the box body through a hinge rod piece, the air blower is fixed to the outer side of the left wall of the box body, and the second-stage screen and the first-stage screen vibrate at the same frequency through a dowel bar. According to the sand screening device, shakeout is evenly raised by rotating the fan blades, paper scraps and leaf impurities are discharged out of the box body through air blowing of the fan, the leaf impurities are prevented from being left on the surface of the screen to cause blockage of screen holes, screening and separation of the impurities are achieved, and the sand screening efficiency is improved.

Description

Technical Field

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

[0002] With the development of society, civil engineering construction is developing more and more rapidly, and the construction of engineering projects is increasing day by day. In the process of project construction, a large amount of sand and gravel is often needed, whether it is natural sand and gravel or artificial crushed sand. In the process of batching, sand screening is often required. In the existing screening device, a screen is used to screen impurities such as paper scraps and leaf impurities in natural sand. The screened sand falls under the screen, while paper scraps and leaf impurities will remain on the surface of the screen and continue to accumulate, which can easily cause blockage of the screen holes, making it difficult for subsequent sand to be screened under the screen, thereby affecting the screening efficiency. Summary of the invention

[0003] In order to solve the technical problem that impurities such as paper scraps and leaves accumulate on the screen and easily cause blockage to the screen holes, the utility model provides a sand screening device for construction. The sand body is evenly stirred by fan blades, and the paper scraps and leaves in the sand body are stratified through the vibration of the screen device. The sand body falls to the bottom through the first-level screen, and the fan blows lighter materials such as paper scraps and leaves to the right side of the box and discharges them from the right side, thereby avoiding the accumulation of impurities such as paper scraps and leaves on the screen and ensuring the normal operation of the sand screening device.

[0004] The utility model adopts the following technical solutions:

[0005] A sand screening device for construction, comprising a box body, a fan, a fan blade device and a screen device;

[0006] The upper end of the box body is provided with a feed port, and a fan blade device is provided below the feed port, and the fan blade device includes a rotating shaft, fan blades and a rotating drum, the rotating shaft is arranged horizontally and rotatably connected to the side wall of the box body, a rotating drum is fixedly sleeved outside the rotating shaft, and fan blades are evenly arranged on the outer wall of the rotating drum, and the screen device includes a primary screen, the primary screen is inclined, and a vibration structure for vibrating the screen is provided on the left side of the primary screen, and the bottom of the right side of the primary screen is connected to a triangular support through a spring, and the triangular support is fixed to the side wall of the box body, and the right wall of the box corresponds to A first discharge port is provided at the position of the first-level screen, and the fan includes a blower, which is fixed on the outer side of the left wall of the box. The air outlet of the blower passes through the side wall of the box and is located above the first-level screen. The fan blades are driven by the rotating shaft to evenly mix the fallen sand, which falls onto the first-level screen. The first-level screen vibrates and screens the paper scraps and leaves in the sand body to the upper layer of the sand body. The paper scraps, leaves and other materials are blown to the right side of the box by the blower and discharged from the right side of the box to avoid the accumulation of impurities on the screen, thereby affecting the normal operation of the screen device, thereby achieving the effect of removing impurities and improving the screening efficiency.

[0007] Furthermore, the length of the rotating shaft is greater than the length of the rotating drum, the thickness of the fan blades near the rotating drum is greater than the thickness of the fan blades far from the rotating drum, and the fan blades are arc-shaped.

[0008] Furthermore, the vibration structure includes a hinged rod and a motor, a cam is fixed to the outer end of the output shaft of the motor, the hinged rod includes a U-shaped rod, a longitudinal rod and a force transmission plate, the U-shaped rod is horizontally arranged, the open end of the U-shaped rod extends into the box body and is fixed to the left end of the primary screen, the longitudinal rod is fixed below the closed end of the U-shaped rod, the force transmission plate is fixed on the lower side of the longitudinal rod, the cam is close to the lower surface of the force transmission plate, and the motor drives the cam to rotate, thereby realizing the up and down movement of the force transmission plate.

[0009] Furthermore, the screen device also includes a secondary screen, which is arranged at an angle and parallel to the primary screen, a force transmission rod is provided between the secondary screen and the primary screen, a second discharge port is opened on the right wall of the box corresponding to the position of the secondary screen, the left side of the secondary screen is connected to the primary screen through the force transmission rod, the right bottom of the secondary screen is connected to a triangular support through a spring, and the triangular support is fixed to the side wall of the box, and the secondary screen can obtain vibration power through the primary screen.

[0010] Furthermore, the force transmission rod is fixedly connected to the primary screen and the secondary screen respectively through rivets. There are two force transmission rods, which are arranged on both sides of the screen device. The secondary screen vibrates at the same frequency as the primary screen through the force transmission rods, thereby improving the screening efficiency of the screen device.

[0011] Furthermore, the sand screening device for construction also includes a conveyor belt, which is arranged below the secondary screen and fixed to the bottom of the box. A third discharge port is opened on the left side of the bottom of the box. The left end of the conveyor belt extends out of the box through the third discharge port, and the screened sand is transported out of the box from the third discharge port by the conveyor belt.

[0012] Compared with the prior art, the utility model has the following technical effects:

[0013] 1. The utility model can evenly spread the sand through the rotation of the fan blades to prevent the sand from falling to the middle of the first-level screen, and through the vibration of the screen device, the sand is heavy and continues to sink, so that the paper scraps and broken leaves in the sand can be quickly layered; sand that meets the size falls under the first-level screen through the screen holes, and the fan blows the lighter paper scraps and broken leaves to the right side of the box and discharges them from the right side, thereby preventing the accumulation of paper scraps and leaf impurities on the screen and causing blockage of the screen holes, thereby ensuring the normal operation of the sand screening device.

[0014] 2. A cam is fixed to the outer end of the output shaft of the motor of the utility model, and the cam is in close contact with the lower surface of the force transmission plate. When the motor is turned on, the force transmission plate moves up and down to achieve a vibration effect, thereby driving the first-level screen to vibrate. The second-level screen is connected to the first-level screen through a force transmission rod, so that the second-level screen obtains power from the first-level screen through the force transmission rod, ensuring that the second-level screen and the first-level screen can vibrate at the same frequency, thereby improving the screening efficiency of the screen device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a front structural schematic diagram of a sand screening device for construction.

[0016] Figure 2 The utility model is a side structural schematic diagram of a sand screening device for construction.

[0017] Figure 3 The utility model is a schematic diagram of the fan blade structure of a sand screening device for construction.

[0018] Figure 4 The utility model is a schematic diagram of a hinged rod structure of a sand screening device for construction.

[0019] Figure 5 The utility model is a schematic diagram of a spring structure of a sand screening device for construction.

[0020] The numbers in the accompanying drawings are: 1 is a box body, 11 is a feed port, 12 is a first discharge port, 13 is a second discharge port, 14 is a third discharge port, 15 is a triangular support, 2 is a fan blade device, 21 is a rotating shaft, 22 is a fan blade, 23 is a rotating drum, 3 is a blower, 5 is a hinged rod, 51 is a U-shaped rod, 52 is a longitudinal rod, 53 is a force transmission plate, 6 is a motor, 61 is a cam, 7 is a screen device, 71 is a primary screen, 72 is a secondary screen, 73 is a force transmission rod, 8 is a conveyor belt, and 9 is a spring. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1 to Figure 5As shown, a sand screening device for construction includes a box body 1, a fan, a blade device 2 and a screen device 7. The upper end of the box body 1 is provided with a feed inlet 11, and the blade device 2 is provided below the feed inlet 11. The blade device 2 includes a rotating shaft 21, blades 22 and a rotating drum 23. The rotating shaft 21 is horizontally arranged and rotatably connected to the side wall of the box body 1. The rotating shaft 21 is fixedly sleeved with a rotating drum 23. The outer wall of the rotating drum 23 is evenly arranged with blades 22. The screen device 7 includes a primary screen 71. The primary screen 71 includes a first-level screen 71, and the first-level screen 71 includes a first-level screen 71. The screen 71 is tilted, and a vibration structure for vibrating the screen is provided on the left side of the first-level screen 71. The bottom right side of the first-level screen 71 is connected to a triangular support 15 through a spring 9, and the triangular support 15 is fixed to the side wall of the box 1. A first discharge port 12 is provided on the right wall of the box 1 corresponding to the position of the first-level screen 71. The fan includes a blower 3, and the blower 3 is fixed on the outer side of the left wall of the box 1. The air outlet of the blower 3 passes through the side wall of the box 1 and is located above the first-level screen 71. The sand body falls from the feed port 11. When the fan device 2 rotates counterclockwise, the fallen sand is evenly spread to prevent the sand from falling onto the primary screen 71. The lower surface of the force transmission plate 73 of the hinged rod 5 is in close contact with the upper surface of the cam 61 at the end of the output shaft of the motor 6, so that the primary screen 71 obtains power from the motor 6 outside the box body 1 through the hinged rod 5, thereby achieving the vibration effect of the screen. Through the vibration of the primary screen 71, the paper scraps and broken leaves in the sand can be quickly layered, and the lighter paper scraps and leaf impurities can be blown away by the blowing action of the fan. To the right side of the primary screen 71, it is discharged from the first discharge port 12. Sand bodies that meet the size fall into the secondary screen 72 through the sieve holes of the primary screen 71. A small amount of sand bodies with large particle sizes are discharged from the first discharge port 12. The secondary screen 72 maintains the same frequency vibration as the primary screen 71 through its force transmission rod 73, and the sand bodies with larger particle sizes are discharged from the second discharge port 13. The sand bodies with smaller particle sizes fall into the sieve holes of the secondary screen 72 and onto the conveyor belt 8 below. The conveyor belt 8 transports the fallen sand bodies to the outside of the box body 1 through the third discharge port 14.

[0023] As an implementable embodiment, the length of the rotating shaft 21 is greater than the length of the rotating drum 23, the thickness of the fan blades 22 near the rotating drum 23 is greater than the thickness of the fan blades 22 far from the rotating drum 23, and the fan blades 22 are arc-shaped. When the rotating shaft 21 rotates, it drives the fan blades 22 to rotate counterclockwise.

[0024] As an implementable embodiment, the vibration structure includes a hinged rod 5 and a motor 6, a cam 61 is fixed to the outer end of the output shaft of the motor 6, the hinged rod 5 includes a U-shaped rod 51, a longitudinal rod 52 and a force transmission plate 53, the U-shaped rod 51 is horizontally arranged, the open end of the U-shaped rod 51 extends into the box body 1 and is fixed to the left end of the primary screen 71, the longitudinal rod 52 is fixed below the closed end of the U-shaped rod 51, the force transmission plate 53 is fixed on the lower side of the longitudinal rod 52, the cam 61 is close to the lower surface of the force transmission plate 53, when the motor 6 is running, the cam 61 rotates, so that the force transmission plate 53 moves up and down.

[0025] As an implementable embodiment, the screen device 7 also includes a secondary screen 72, which is inclined and parallel to the primary screen 71, and a force transmission rod 73 is provided between the secondary screen 72 and the primary screen 71. A second discharge port 13 is opened on the right wall of the box body 1 corresponding to the position of the secondary screen 72; the left side of the secondary screen 72 is connected to the primary screen 71 through the force transmission rod 73, and the right bottom of the secondary screen 72 is connected to the triangular support 15 through the spring 9, and the triangular support 15 is fixed to the side wall of the box body 1. After the primary screen 71 vibrates and screens, the sand with large particle size is discharged through the first discharge port 12 on the right side, and the screened sand falls onto the upper surface of the secondary screen 72. Through the vibration screening of the secondary screen 72, the larger sand is discharged from the second discharge port 13 on the right side.

[0026] As an implementable embodiment, the force transmission rod 73 is fixedly connected to the primary screen 71 and the secondary screen 72 respectively through rivets. There are two force transmission rods 73, and the two force transmission rods 73 are respectively arranged on both sides of the screen device 7. The secondary screen 72 vibrates at the same frequency as the primary screen 71 through the force transmission rod 73. When the primary screen 71 moves up and down, the power is transmitted to the secondary screen 72 through the force transmission rod 73.

[0027] As an implementable embodiment, the sand screening device 7 for construction also includes a conveyor belt 8, which is arranged below the secondary screen 72 and fixed to the bottom of the box body 1. A third discharge port 14 is opened on the left side of the bottom of the box body 1. The left end of the conveyor belt 8 extends out of the box body 1 through the third discharge port 14, and the screened sand is transported out of the box body 1 from the third discharge port 14 by the conveyor belt 8.

[0028] When in use, the screened sand needs to be poured in through the feed port 11, and the sand falls onto the fan blades 22, and the shaft 21 rotates counterclockwise (in degrees). Figure 1The direction indicated is taken as the standard), the first-level screen 71 is connected to the motor 6 outside the box body 1 through the hinged rod 5 on the left. Because the cam 61 is fixed to the outer end of the output shaft of the motor 6, and the cam 61 is close to the lower surface of the force transmission plate 53, when the motor 6 rotates, the force transmission plate 53 can be moved up and down to achieve a vibration effect, so that the first-level screen 71 starts to vibrate. The first-level screen 71 vibrates to screen the paper scraps and broken leaves impurities in the sand body to the upper layer of the sand body. The first-level screen 71 is tilted and tilted to the first discharge port 12. The broken leaves impurities in the upper layer are blown to the right side of the screen by the blowing of the blower 3 on the left, so as to achieve The impurities such as broken leaves and paper scraps in the sand are removed to prevent impurities from accumulating on the screen device 7 and causing blockage of the screen holes. Sand with large particle sizes is also continuously discharged from the first discharge port 12 under the action of vibration. Sand with larger particle sizes falls to the upper surface of the secondary screen 72 by gravity. The secondary screen 72 vibrates at the same frequency as the primary screen 71 through the force transmission rod 73, and the sand falling from the primary screen 71 is screened again. Sand with larger particle sizes is discharged from the second discharge port 13 on the right side. The screened fine sand passes through the secondary screen 72 and falls above the conveyor belt 8. The conveyor belt 8 transports the fine sand out through the third discharge port 14.

[0029] The embodiments described above are only preferred embodiments of the present invention and are only used to explain the present invention, not to limit the scope of implementation of the present invention. For those skilled in the art, other implementation methods can certainly be easily made by replacement or modification based on the technical contents disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A sand screening device for construction, comprising a box (1), characterized in that: It also includes a fan, a fan blade device (2) and a screen device (7); The upper end of the box body (1) is provided with a feed inlet (11), and a fan blade device (2) is provided below the feed inlet (11). The fan blade device (2) comprises a rotating shaft (21), fan blades (22) and a rotating drum (23). The rotating shaft (21) is horizontally arranged and rotatably connected to the side wall of the box body (1). The rotating drum (23) is fixedly sleeved outside the rotating shaft (21), and the fan blades (22) are evenly arranged on the outer wall of the rotating drum (23); The screen device (7) comprises a primary screen (71), the primary screen (71) being arranged at an angle, a vibration structure for causing the screen to vibrate being provided on the left side of the primary screen (71), the bottom right side of the primary screen (71) being connected to a triangular support (15) via a spring (9), the triangular support (15) being fixed to a side wall of a box body (1), and a first discharge port (12) being provided on the right wall of the box body (1) at a position corresponding to the primary screen (71); The fan comprises a blower (3), the blower (3) being fixed to the outside of the left wall of the box body (1), and the air outlet of the blower (3) passing through the side wall of the box body (1) and being located above the primary screen (71).

2. A sand screening device for construction according to claim 1, characterized in that: The length of the rotating shaft (21) is greater than the length of the rotating drum (23); the thickness of the fan blade (22) near the rotating drum (23) is greater than the thickness of the fan blade (22) far from the rotating drum (23); and the fan blade (22) is arc-shaped.

3. A sand screening device for construction according to claim 1, characterized in that: The vibration structure comprises a hinged rod (5) and a motor (6); a cam (61) is fixed to the outer end of the output shaft of the motor (6); the hinged rod (5) comprises a U-shaped rod (51), a longitudinal rod (52) and a force transmission plate (53); the U-shaped rod (51) is arranged horizontally; the open end of the U-shaped rod (51) extends into the box body (1) and is fixed to the left end of the primary screen (71); the longitudinal rod (52) is fixed below the closed end of the U-shaped rod (51); the force transmission plate (53) is fixed to the lower side of the longitudinal rod (52); and the cam (61) is in close contact with the lower surface of the force transmission plate (53).

4. A sand screening device for construction according to claim 1, characterized in that: The screen device (7) further comprises a secondary screen (72), the secondary screen (72) being arranged in an inclined manner and parallel to the primary screen (71), a force transmission rod (73) being provided between the secondary screen (72) and the primary screen (71), a second discharge port (13) being provided at a position on the right wall of the box (1) corresponding to the secondary screen (72), the left side of the secondary screen (72) being connected to the primary screen (71) via the force transmission rod (73), the right bottom of the secondary screen (72) being connected to a triangular support (15) via a spring (9), and the triangular support (15) being fixed to the side wall of the box (1).

5. A sand screening device for construction according to claim 4, characterized in that: The force transmission rod (73) is fixedly connected to the primary screen (71) and the secondary screen (72) respectively by rivets. There are two force transmission rods (73), and the two force transmission rods (73) are respectively arranged on both sides of the screen device (7). The secondary screen (72) vibrates at the same frequency as the primary screen (71) through the force transmission rods (73).

6. A sand screening device for construction according to claim 1, characterized in that: The sand screening device for construction further comprises a conveyor belt (8), wherein the conveyor belt (8) is arranged below the secondary screen (72) and fixed to the bottom of the box body (1), a third discharge port (14) is provided on the left side of the bottom of the box body (1), and the left end of the conveyor belt (8) extends out of the box body (1) through the third discharge port (14).

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