Sand screening machine for constructional engineering

Abstract

The utility model provides a sand screening machine for constructional engineering, and belongs to the technical field of sand screening machines. Comprising a frame body, a front frame is installed at the front end of the frame body, a screening roller is rotationally connected between the frame body and the front frame, the screening roller is obliquely arranged, a base is installed at the bottom end of the frame body, a second screening mechanism is installed at the top end of the base, and the second screening mechanism is located below an opening in the bottom of the screening roller; a conveying device is installed at the top end of the base and located below the screening roller and the second screening mechanism. According to the sand screening machine for constructional engineering, the screening roller is driven by the motor to rotate, entering sand is screened for the first time, the sand meeting the standard falls onto the conveying device to be conveyed, and other sand is discharged from an opening in the bottom of the screening roller and falls onto the second screening mechanism to be screened for the second time; and the screened sand meeting the standard falls on the conveying device, and the sand not meeting the standard is vibrated out of the connecting frame.

Description

Technical Field

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

[0002] The Chinese patent, application number 202321195748.2, discloses a sand screening machine for construction engineering. By improving the sand screening mechanism, multiple screen drum structures are arranged. The multiple screen drums are clamped and connected to the fixed ring by fixing plates. In the process of sand screening, the number and aperture of the screen drums can be selected according to the needs of sand screening, which can improve the screening of sand of different coarseness and fineness; by installing a material guide pipe at the discharge end of the hopper, and installing an auger rod inside the material guide pipe, the auger rod is driven to rotate by a first drive motor, and the sand enters the interior of the sand screening mechanism at a uniform speed through the rotation of the auger rod;

[0003] Although the device is equipped with multiple layers of screen drums, since both ends of the screen drums are straight-through openings, after the material is unloaded, most of the sand that meets the standards will leak out directly from the bottom opening of the screen drum along with the sand flow, resulting in a large amount of sand that meets the standards not being recovered, and the practicality is poor. Utility Model Content

[0004] In order to solve the problem of a large amount of sand that meets the standards directly leaking out in the above-mentioned prior art, the utility model provides a sand screening machine for construction engineering, which adopts a second screening mechanism in combination with a screening drum to achieve the effect of double screening, and its specific technical scheme is: a sand screening machine for construction engineering, comprising: a frame, a front frame is installed at the front end of the frame, a screening drum is rotatably connected between the frame and the front frame, the screening drum is arranged obliquely, a base is installed at the bottom end of the frame, a second screening mechanism is installed at the top of the base, and the second screening mechanism is located below the bottom opening of the screening drum; a conveying device is installed at the top of the base, and the conveying device is located below the screening drum and the second screening mechanism.

[0005] Preferably, the second screening mechanism includes: a support frame, a spring, a connecting frame, a screening net and a vibration motor, the support frame is fixedly installed on the top of the base, springs are installed at the four corners of the top of the support frame, a connecting frame is installed on the top of the four springs, a screening net is fixedly installed on the top of the connecting frame, a motor mounting plate is installed on the bottom end of the connecting frame, and a vibration motor is fixedly installed on the bottom end of the motor mounting plate; the conveying device is located at the bottom center of the support frame.

[0006] Preferably, two support columns are symmetrically installed between the front frame and the base.

[0007] Preferably, a feed hopper is installed at the top of the frame, a discharge port is opened at the bottom of the feed hopper, and the discharge port extends into the top opening of the screening drum.

[0008] Preferably, a mounting plate 1 is fixedly installed between the inner walls of both sides of the frame body, a motor is fixedly installed on the top of the mounting plate 1, a rotating shaft is installed on the output end of the motor, and the rotating shaft rotatably extends through the discharge port, and a plurality of groups of support rods are equidistantly installed on the outer wall of the rotating shaft, and the screening drum is installed on the end of the plurality of support rods away from the rotating shaft, and a bearing seat is fixedly installed on the top of the front frame, and the bearing seat is located at the front top center of the front frame, and the bearing seat is rotatably sleeved on the outer wall of the rotating shaft; a fixed frame is installed on the front top of the front frame, and a rotating rod is rotatably connected above the screening drum, and a plurality of whipping belts are installed on the outer wall of the rotating rod, and the whipping belts are adapted to the screening drum, and the rear end of the rotating rod is rotatably connected to the frame body, and the front end of the rotating rod rotatably extends through the fixed frame, and a transmission component is arranged on the rotating rod and the front end of the rotating shaft.

[0009] Preferably, the transmission component includes: pulley one, pulley two and a transmission belt, the front end of the rotating shaft is fixedly mounted with pulley one, the front end of the rotating rod is fixedly mounted with pulley two, and a transmission belt is wound around the outer walls of pulley one and pulley two.

[0010] In addition, the sand screening machine for construction projects in the above technical solution provided by the utility model may also have the following characteristics: two side baffles are symmetrically installed on both sides of the screening drum, and the side baffles are respectively installed on the frame body and the front frame, and mounting plates 2 are installed on the inner walls on both sides of the front frame, and inclined baffles are installed on the opposite ends of the two mounting plates 2, and the two inclined baffles are symmetrically arranged, and the two inclined baffles are located below the screening drum.

[0011] In the above technical solution, the screening drum is matched with the inclined baffle.

[0012] The utility model discloses a sand screening machine for construction projects. Compared with the prior art, the beneficial effects are as follows: the sand screening machine for construction projects drives the screening drum to rotate through a motor, and performs a first screening on the incoming sand. The sand that meets the standards falls onto a conveying device for transportation, and the remaining sand is directly discharged from the bottom opening of the screening drum and falls onto a second screening mechanism for secondary screening, so that the sand that meets the standards after screening falls onto the conveying device, and the sand that does not meet the standards is vibrated out from a connecting frame; the rotating shaft drives the rotating rod to rotate through a transmission component, so that the rotating rod drives the whipping team to whip the screening drum to avoid blockage of the screening drum, thereby improving the screening quality and having strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A side view schematic diagram of a sand screening machine for construction engineering provided by the utility model;

[0014] Figure 2 A schematic diagram of the main view of the sand screening machine for construction engineering provided by the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of the connecting frame provided by the utility model;

[0016] Figure 4 A schematic diagram of the structure of the inclined baffle provided by the utility model;

[0017] in, Figures 1 to 4 The reference numerals and component names are: 1, frame, 2, front frame, 3, screening drum, 4, base, 5, support frame, 6, spring, 7, connecting frame, 8, screening net, 9, conveyor, 10, motor mounting plate, 11, vibration motor, 12, support column, 13, feed hopper, 14, discharge port, 15, mounting plate one, 16, motor, 17, rotating shaft, 18, support rod, 19, rotating rod, 20, whipping belt, 21, fixing frame, 22, transmission component, 23, side baffle, 24, mounting plate two, 25, inclined baffle, 221, pulley one, 222, pulley two, 223, transmission belt. DETAILED DESCRIPTION

[0018] The following is a combination of specific implementation cases and attached Figure 1-Figure 4 The utility model is further explained, but the utility model is not limited to these embodiments. The utility model provides a technical solution: a sand screening machine for construction engineering, comprising: a frame 1, the frame 1 is composed of four vertical rods and multiple connecting rods, the front end of the frame 1 is installed with a front frame 2 by bolts, the front frame 2 is an arch structure, a screening drum 3 is rotatably connected between the frame 1 and the front frame 2, the screening drum 3 is arranged obliquely, and the screening drum 3 with different screening holes is selected according to the size of the sand to be screened, a base 4 is installed at the bottom end of the frame 1, and a second screening mechanism is installed at the top of the base 4, the second screening mechanism is close to the front side of the base 4, and the second screening mechanism is located below the bottom opening of the screening drum 3; a conveying device 9 is installed at the top of the base 4, and the conveying device 9 is located below the screening drum 3 and the second screening mechanism, the front end of the conveying device 9 is vertically flush with the front end of the second screening mechanism, and the rear end of the conveying device 9 slightly extends out of the base 4.

[0019] As a preferred embodiment, further, the second screening mechanism includes: a support frame 5, a spring 6, a connecting frame 7, a screening net 8 and a vibration motor 11. The support frame 5 is installed on the top of the base 4 by bolts, and springs 6 are welded to the four corners of the top of the support frame 5. The connecting frame 7 is welded to the top of the four springs 6. The front end of the connecting frame 7 is an open structure, and the center of the bottom end of the connecting frame 7 is a rectangular opening structure. The screening net 8 is fixedly installed on the top of the connecting frame 7, and a motor mounting plate 10 is installed on the bottom end of the connecting frame 7. The vibration motor 11 is fixedly installed on the bottom end of the motor mounting plate 10; the conveying device 9 is located at the bottom center of the support frame 5, and the conveying device 9 is located below the screening net 8.

[0020] As a preferred solution, further, two support columns 12 are symmetrically installed between the front frame 2 and the base 4 by bolts, and the support columns 12 enable the front frame 2 to be arranged horizontally and stably.

[0021] As a preferred solution, further, a feed hopper 13 is installed at the top of the frame 1 , a discharge port 14 is opened at the bottom of the feed hopper 13 , and the discharge port 14 extends into the top opening of the screening drum 3 .

[0022] As a preferred solution, further, a mounting plate 15 is fixedly installed between the inner walls on both sides of the frame 1, the mounting plate 15 is close to the rear side of the frame 1, a motor 16 is fixedly installed on the top of the mounting plate 15, a rotating shaft 17 is installed on the output end of the motor 16, the rotating shaft 17 rotates and extends through the discharge port 14, and five groups of support rods 18 are equidistantly installed on the outer wall of the rotating shaft 17, each group of support rods 18 is composed of three straight rods 18, and a screening drum 3 is installed at one end of the five groups of support rods 18 away from the rotating shaft 17, and a bearing seat is fixedly installed on the top of the front frame 2, and the bearing seat is arranged obliquely, and the bearing seat is located at the front At the front top center of the frame 2, the bearing seat is rotatably mounted on the outer wall of the rotating shaft 17; a fixed frame 21 is installed on the front top of the front frame 2, and a rotating rod 19 is rotatably connected to the top of the screening drum 3. The rotating rod 19 has the same degree of inclination as the screening drum 3. Three whipping belts 20 are installed on the outer wall of the rotating rod 19, and the whipping belts 20 are adapted to the screening drum 3. The rear end of the rotating rod 19 is rotatably connected to the frame body 1, and the front end of the rotating rod 19 is rotatably extended over the fixed frame 21. The rotating rod 19 and the fixed frame 21 are rotatably connected through bearings, and a transmission component 22 is provided between the rotating rod 19 and the front end of the rotating shaft 17.

[0023] As a preferred solution, further, the transmission component 22 includes: pulley 1 221, pulley 222 and a transmission belt 223, the front end of the rotating shaft 17 is fixedly mounted with pulley 1 221, the front end of the rotating rod 19 is fixedly mounted with pulley 2 222, and a transmission belt 223 is wound around the outer walls of pulley 1 221 and pulley 2 222.

[0024] As a preferred solution, further, two side baffles 23 are symmetrically installed on both sides of the screening drum 3, and the side baffles 23 are respectively installed on the frame 1 and the front frame 2 by bolts, and the side baffles 23 prevent sand from being thrown out from both sides; mounting plates 24 are installed on the inner walls of both sides of the front frame 2 by bolts, and inclined baffles 25 are installed at the opposite ends of the two mounting plates 24, and the two inclined baffles 25 are symmetrically arranged, and the two inclined baffles 25 are located below the screening drum 3, and the screening drum 3 is adapted to the inclined baffles 25, and the inclined baffles 25 are located between the screening drum 3 and the conveying device 9.

[0025] The screening drum, spring, screening net, conveyor, vibration motor, motor and whipping belt in this case are prior art. The screening drum and motor have the same structure and connection method as in the cited documents. As long as the screening drum, spring, screening net, conveyor, vibration motor, motor and whipping belt meet the requirements of this case, they can be used and are not limited to a single model.

[0026] Working principle: the electrical components appearing in the present application are all connected to an external power supply and a control switch when in use. After the present invention is installed, first check the installation fixation and safety protection of the present invention, and then it can be used; when in use, the user pours the sand into the feed hopper 13 through a forklift, and the sand enters the screening drum 3 from the discharge port 14, the motor 16 drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the screening drum 3 to rotate through the support rod 18, so that the screening drum 3 screens the sand, and the screened sand falls on the inclined baffle, and then slides onto the conveying device 9, and the sand is transported to the rear side through the conveying device 9; then the remaining sand falls from the bottom opening of the screening drum 3 onto the screening net 8, and is vibrated by the electric The machine 11 drives the connecting frame 7 to vibrate, so that the sand on the screening net 8 is screened, and the qualified sand passes through the screening net 8 and falls on the conveying device 9 for backward transportation, and the sand that does not meet the screening conditions is vibrated down from the front opening of the connecting frame 7, so that the non-standard sand falls on the front side of the device, and the qualified sand falls on the rear side of the device; in the process of rotation of the screening drum 3, the rotating shaft 17 drives the pulley 1 221 to rotate, the pulley 1 221 drives the pulley 2 222 to rotate through the transmission drive 223, and the pulley 2 222 drives the rotating rod 19 to rotate, so that the rotating rod 19 swings the whipping belt 20 on the surface, so that the whipping belt 20 whips the surface of the screening drum 3, thereby avoiding the clogging of the screening drum 3, and the practicability is strong.

[0027] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sand screening machine for construction engineering, comprising: The frame (1) is characterized in that a front frame (2) is installed at the front end of the frame (1), a screening drum (3) is rotatably connected between the frame (1) and the front frame (2), the screening drum (3) is arranged obliquely, a base (4) is installed at the bottom end of the frame (1), a second screening mechanism is installed at the top end of the base (4), and the second screening mechanism is located below the bottom opening of the screening drum (3); a conveying device (9) is installed at the top end of the base (4), and the conveying device (9) is located below the screening drum (3) and the second screening mechanism.

2. The sand screening machine for construction engineering according to claim 1, characterized in that: The second screening mechanism comprises: a support frame (5), a spring (6), a connecting frame (7), a screening net (8) and a vibration motor (11); the support frame (5) is fixedly mounted on the top of the base (4); springs (6) are mounted on the four corners of the top of the support frame (5); the connecting frame (7) is mounted on the top of the four springs (6); the screening net (8) is fixedly mounted on the top of the connecting frame (7); a motor mounting plate (10) is mounted on the bottom of the connecting frame (7); and the vibration motor (11) is fixedly mounted on the bottom of the motor mounting plate (10); the conveying device (9) is located at the bottom center of the support frame (5).

3. The sand screening machine for construction engineering according to claim 1, characterized in that: Two support columns (12) are symmetrically mounted between the front frame (2) and the base (4).

4. The sand screening machine for construction engineering according to claim 1, characterized in that: A feed hopper (13) is installed at the top end of the frame (1), and a discharge port (14) is provided at the bottom end of the feed hopper (13), and the discharge port (14) extends into the top opening of the screening drum (3).

5. The sand screening machine for construction engineering according to claim 4, characterized in that: A mounting plate (15) is fixedly mounted between the inner walls of both sides of the frame (1), a motor (16) is fixedly mounted on the top of the mounting plate (15), a rotating shaft (17) is mounted on the output end of the motor (16), the rotating shaft (17) rotates and extends through the discharge port (14), a plurality of groups of support rods (18) are equidistantly mounted on the outer wall of the rotating shaft (17), the screening drum (3) is mounted on one end of the plurality of groups of support rods (18) away from the rotating shaft (17), a bearing seat is fixedly mounted on the top of the front frame (2), the bearing seat is located at the front top center of the front frame (2) The bearing seat is rotatably mounted on the outer wall of the rotating shaft (17); a fixing frame (21) is installed on the front top of the front frame (2); a rotating rod (19) is rotatably connected to the top of the screening drum (3); a plurality of whipping belts (20) are installed on the outer wall of the rotating rod (19); the whipping belts (20) are matched with the screening drum (3); the rear end of the rotating rod (19) is rotatably connected to the frame body (1); the front end of the rotating rod (19) is rotatably extended over the fixing frame (21); and a transmission component (22) is provided between the rotating rod (19) and the front end of the rotating shaft (17).

6. The sand screening machine for construction engineering according to claim 5, characterized in that: The transmission component (22) comprises: a first pulley (221), a second pulley (222) and a transmission belt (223); the front end of the rotating shaft (17) is fixedly sleeved with the first pulley (221); the front end of the rotating rod (19) is fixedly sleeved with the second pulley (222); and the transmission belt (223) is wound between the outer walls of the first pulley (221) and the second pulley (222).

7. The sand screening machine for construction engineering according to claim 1, characterized in that: Two side baffles (23) are symmetrically mounted on both sides of the screening drum (3); the side baffles (23) are mounted on the frame (1) and the front frame (2) respectively; mounting plates (24) are mounted on both inner walls of the front frame (2); inclined baffles (25) are mounted on opposite ends of the two mounting plates (24); the two inclined baffles (25) are symmetrically arranged; the two inclined baffles (25) are located below the screening drum (3); and the screening drum (3) is adapted to fit the inclined baffles (25).

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