Sand screening equipment for building construction

Abstract

The utility model relates to the technical field of building construction equipment, and provides sand screening equipment for building construction, which comprises a rack, a feeding hopper, a roller, a conveying belt and a speed reducer, the device further comprises a vibration mechanism. The roller is obliquely arranged on the rack, the feeding hopper is communicated with an upper port of the roller, and a rotating shaft is arranged in the center of the roller and is in transmission connection with the speed reducer; the conveyor belt is arranged below the roller, and sieve holes are formed in the roller and the conveyor belt; the vibrating mechanism comprises a driving belt wheel arranged on the rotating shaft and two driven belt wheels arranged on the two sides below the conveying belt, and the driving belt wheel is connected with the driven belt wheels; and cam structures are arranged on the two driven belt wheels. Raw materials can be sieved twice, the raw materials are separated into gravel and coarse sand after passing through the roller and then separated into coarse sand and fine sand after passing through the conveying belt, automatic grading and sieving of the sand are achieved, use in different occasions can be met, and the sieving efficiency is high.

Description

Technical Field

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

[0002] Concrete is a common building material in the process of construction. It is mainly made of cement as a cementitious material, mixed with water, sand, and gravel, and chemical admixtures and mineral admixtures are added when necessary. It is matched in appropriate proportions and evenly stirred, compacted, and hardened to form an artificial stone. Among them, when using sand, since there are many large-grained stones in the sand in the natural state, it must be screened before use to remove the larger particles in the sand. In addition, sand of different particle sizes (particle sizes) is required during the construction of buildings. At present, when screening sand in civil construction, the main method is for the operator to use a shovel to throw the sand onto the screen next to it, but the efficiency of screening and filtering sand through the screen is low. Utility Model Content

[0003] The utility model aims to provide a sand screening device for construction to solve the problem of low efficiency of the existing sand screening method.

[0004] The utility model is implemented as follows: a sand screening device for construction, which includes a frame, a feed hopper, a roller, a conveyor belt and a reducer; and also includes a vibration mechanism;

[0005] The drum is tilted on the frame, the feed hopper is connected to the upper port of the drum, a rotating shaft is arranged at the center of the drum, and the rotating shaft is connected to the reducer by transmission;

[0006] The conveyor belt is arranged below the drum, and sieve holes are arranged on the drum and the conveyor belt;

[0007] The vibration mechanism includes a driving pulley arranged on a rotating shaft and two driven pulleys arranged on both sides below the conveyor belt, wherein the driving pulley is connected to the driven pulleys; a cam structure is arranged on each of the two driven pulleys, and the cam structure has a protruding portion protruding from the outer diameter of the driven pulley, and the protruding portion can contact the belt body of the conveyor belt and lift it up.

[0008] Preferably, the aperture of the sieve holes on the drum surface is larger than the aperture of the sieve holes of the conveyor belt.

[0009] Preferably, the drum wall is in a screen shape, and a plurality of reinforcing ribs are longitudinally spaced apart on the inner side of the drum wall.

[0010] Preferably, the conveyor belt is arranged obliquely on the frame.

[0011] Preferably, the roller and the conveyor belt have the same inclination direction.

[0012] Preferably, the cam structure is fixed to the driven pulley by bolts.

[0013] Preferably, both ends of the drum are rotatably connected to the bracket via the rotating shaft, and the drum is detachable.

[0014] By adopting the above technical scheme, the utility model can screen the raw materials twice. The raw materials are separated into sand and gravel and coarse sand after passing through the drum, and then separated into coarse sand and fine sand after passing through the conveyor belt, thereby realizing automatic grading and screening of sand, which can meet the needs of different occasions and has high screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure: 1—frame, 2—feed hopper, 3—drum, 4—conveyor belt, 5—reducer, 6—rotating shaft, 7—bracket, 8—reinforcement rib, 9—cam structure, 10—driving pulley, 11—driven pulley. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] like Figure 1 As shown, the utility model provides a sand screening device for construction, comprising a frame 1, a feed hopper 2, a roller 3, a conveyor belt 4, a reducer 5 and a transmission mechanism.

[0021] Among them, the drum 3 is tiltedly mounted on the upper part of the frame 1, the upper end of the drum 3 is the feed port, the lower end is the discharge port, and the feed hopper 2 is arranged at the feed port. A rotating shaft 6 is arranged at the center of the drum 3, and the rotating shaft 6 is connected to the reducer 5 by transmission. The rotating shaft 6 has the same inclination as the drum 3, and the two ends of the rotating shaft 6 are connected to the cylinder of the drum 3 through the bracket 7. The reducer 5 drives the rotating shaft 6 to rotate, and the rotating shaft 6 drives the drum 3 to rotate through the bracket 7. Further, the drum surface of the drum 3 is made of a screen, and the sand raw material enters the drum 3 through the feed hopper 2. As the drum 3 rotates, large particles of sand and gravel are retained in the drum 3, and small particles of sand and the like are discharged downward through the sieve holes. Large particles of sand and gravel are discharged through the discharge port along the inclined drum surface of the drum 3. At this point, the first round of screening of the raw materials is completed.

[0022] Furthermore, the drum 3 is rotatably connected to the bracket 7 via the rotating shaft 6, and the drum 3 is detachable. Drums 3 with different apertures can be selected according to different sand screening models, and drums 3 of different sizes can be selected according to the amount of sand screening. Make the device more practical. In this embodiment, slide grooves are set at both axial ends of the outer circumference of the drum 3, and rollers that are rotatably connected to the slide grooves are rotatably connected on the frame. A bearing seat for rotating the rotating shaft 6 is fixedly set on the frame 1, and the base of the reducer 5 is fixedly set on the frame 1. The structure for realizing the rotation connection of this part is a conventional technology in the field, and does not belong to the innovation of the utility model, so it is not drawn in the figure.

[0023] Furthermore, the wall of the drum 3 is in the shape of a screen, and a plurality of reinforcing ribs 8 are longitudinally spaced apart on the inner side of the wall. The reinforcing ribs 8 are parallel to the rotating shaft 6. On the one hand, the reinforcing ribs 8 can increase the strength of the drum body. On the other hand, the reinforcing ribs 8 rotate with the drum 3 to stir and scatter the sand and gravel inside, making the screening more thorough.

[0024] The utility model has a conveyor belt 4 arranged on a frame below a drum 3, the conveyor belt 4 is a screen-type transmission belt, and screen holes are evenly distributed on the conveyor belt 4. Sand screened by the drum 3 is further screened by the conveyor belt 4 and then falls.

[0025] Furthermore, the aperture of the sieve holes on the drum surface of the drum 3 is larger than the aperture of the sieve holes of the conveyor belt 4 , and the sand sieved by the conveyor belt 4 is fine sand with a finer particle size.

[0026] Furthermore, the conveyor belt 4 is tilted on the frame 1 , and the roller 3 and the conveyor belt 4 are tilted in the same direction.

[0027] In order to improve the screening efficiency, the utility model is provided with a vibration mechanism at the conveyor belt 4. The vibration mechanism includes a driving pulley 10 provided at the rotating shaft 6, and driven pulleys 11 provided on both sides below the conveyor belt 4. The driving pulley 10 and the two driven pulleys 11 are connected by a transmission belt. The driving pulley 10 rotates together with the rotating shaft 6, and the two driven pulleys 11 are provided on the frame 1 through bearings. The two driven pulleys 11 are provided in parallel on both sides of the conveyor belt 4. A cam structure 9 is provided on one side wheel surface of the two driven pulleys 11. The cam structure 9 has a protrusion protruding from the outer diameter of the driven pulley 11, and the cam structure 9 can be fixed to the driven pulley 11 by bolts. The cam structure 9 rotates together with the driven pulley 11. The cam structure 9 can lift the upper driven pulley 11 once for each rotation, thereby playing a vibration role.

[0028] The utility model is provided with collecting mechanisms at the discharge port of the drum 3, the lower part of the conveyor belt 4 and the lower end of the conveyor belt 4 respectively, so as to collect the raw materials discharged from the three paths.

[0029] The utility model can screen the raw materials twice. The raw materials are separated into sand and gravel and coarse sand after passing through the drum, and then separated into coarse sand and fine sand after passing through the conveyor belt, thereby realizing automatic grading and screening of sand, meeting the use of different occasions and having high screening efficiency.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sand screening equipment for construction, characterized in that: It includes a frame, a feed hopper, a roller, a conveyor belt and a reducer; it also includes a vibration mechanism; The drum is tilted on the frame, the feed hopper is connected to the upper port of the drum, a rotating shaft is arranged at the center of the drum, and the rotating shaft is connected to the reducer by transmission; The conveyor belt is arranged below the drum, and sieve holes are arranged on the drum and the conveyor belt; The vibration mechanism includes a driving pulley arranged on a rotating shaft and two driven pulleys arranged on both sides below the conveyor belt, wherein the driving pulley is connected to the driven pulleys; a cam structure is arranged on each of the two driven pulleys, and the cam structure has a protruding portion protruding from the outer diameter of the driven pulley, and the protruding portion can contact the belt body of the conveyor belt and lift it up.

2. A sand screening equipment for construction according to claim 1, characterized in that: The aperture of the sieve holes on the cylinder surface of the drum is larger than the aperture of the sieve holes of the conveyor belt.

3. A sand screening equipment for construction according to claim 1, characterized in that: The cylinder wall of the drum is in a screen shape, and a plurality of reinforcing ribs are arranged at intervals on the inner side of the cylinder wall.

4. The sand screening equipment for construction according to claim 1 is characterized in that: The conveyor belt is arranged obliquely on the frame.

5. A sand screening equipment for construction according to claim 4, characterized in that: The roller is inclined in the same direction as the conveyor belt.

6. The sand screening equipment for construction according to claim 1 is characterized in that: The cam structure is fixed on the driven pulley by bolts.

7. The sand screening equipment for construction according to claim 1 is characterized in that: The two ends of the roller are rotatably connected with the bracket through the rotating shaft, and the roller is detachable.

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