Sand screening machine for construction engineering

Abstract

This utility model belongs to the field of construction engineering technology, specifically relating to a sand screening machine for construction engineering. It includes a base, with an infeed / outfeed mechanism on top of the base, and a drum screening mechanism on one side of the infeed / outfeed mechanism. Through the drum screening mechanism, the starting power assembly drives the rotating screen cylinder to rotate via a friction pair wheel, causing the sand and gravel inside the rotating screen cylinder to roll. This is driven by a second belt to rotate the main rotating rod, which in turn drives the first belt to rotate, and simultaneously drives the second horizontal rotating shaft and nylon brush to rotate and brush the outer surface of the rotating screen cylinder. The rotation of the main rotating rod drives the main straight inclined gear to rotate and mesh with the secondary straight inclined gear, causing the vertical rod and the material-pulling rod to rotate, thus separating and screening the sand and gravel inside the rotating screen cylinder. This ensures effective sand screening, clears the mud and sand clogging the rotating screen cylinder, reduces the difficulty for fine sand and gravel to pass through the rotating screen cylinder, and lowers the risk of clogging. It is highly practical.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and specifically relates to a sand screening machine for building engineering. Background Technology

[0002] Construction aggregates are indispensable raw materials in construction projects, and their quality and particle size directly affect the overall performance of building materials. In the construction industry, aggregate screening devices are mainly used in concrete, railway construction, road construction, foundation engineering, and simple building construction. By screening aggregates to different particle sizes, these devices can effectively improve the quality and durability of building materials. At the same time, they can also remove mud, impurities, and other harmful substances from the aggregates, ensuring that the aggregates meet quality standards.

[0003] A search revealed Chinese invention patent application CN116371712A, which discloses a rolling sand and gravel screening device. The device includes a support frame, a drive assembly, and a screening drum. The drive assembly is fixed to the support frame and connected to the screening drum, driving its rotation. The screening drum is inclined on the support frame and rotates relative to it. The screening drum includes a feed inlet and a discharge outlet located below the feed inlet. The sidewalls of the screening drum have several first screening holes along the axial direction, and the bottom of the screening drum has several second screening holes along the radial direction. During screening, the sand and gravel enter the screening drum through the feed inlet. The drive assembly drives the screening drum to rotate. Smaller particles of fine sand pass through the first screening holes on the sidewalls of the screening drum. As the screening drum rotates, the mixture continues to churn at the bottom of the drum. Larger particles of fine sand pass through the second screening holes at the bottom of the drum. The remaining larger particles, such as stones, remain inside the screening drum and are then discharged through the discharge outlet.

[0004] Regarding the aforementioned technologies, since different types of sand are not entirely the same, some sands have a high water content, resulting in severe sand clumping. Ordinary screening methods break up the clumped sand during screening, which is not ideal for accurately screening out large sand particles wrapped in the sieve. Moreover, the sieve may become clogged with sand during long-term use, thus affecting the sand screening effect. Therefore, there is an urgent need to design a sand screening machine for construction engineering to solve these problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model discloses a sand screening machine for construction engineering.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A sand screening machine for construction engineering includes a base, an infeed and discharge mechanism above the base, and a drum screening mechanism on one side of the infeed and discharge mechanism.

[0008] The drum screening mechanism includes a first fixed end plate fixedly mounted on one side of the feeding and discharging mechanism. A rotating screen cylinder is rotatably mounted on the first fixed end plate. A friction pair wheel is fixedly mounted on the outer surface of one end of the rotating screen cylinder. A second fixed end plate is rotatably mounted on one end of the friction pair wheel. A mounting plate is fixedly mounted on one side above the base. A second horizontal rotating shaft is rotatably mounted on the mounting plate. Nylon brushes are evenly mounted on the outer surface of the second horizontal rotating shaft. A main rotating rod is rotatably mounted inside the rotating screen cylinder. Protective shells are equidistantly rotatably mounted on the outer surface of the main rotating rod. A fixed rod is parallel to the main rotating rod. The protective shells and the fixed rod are horizontally fixed. A main straight inclined gear is fixedly mounted on the outer surface of the main rotating rod. A secondary straight inclined gear is meshed on one side of the main straight inclined gear. A material feeding component is fixedly mounted on the secondary straight inclined gear. A power component is rotatably mounted on one side of the friction pair wheel. A second belt is rotatably mounted between the power component and the main rotating rod. A third tensioning shaft is rotatably mounted inside the second belt. A discharge arc plate is horizontally fixed on the second fixed end plate. A first rotating component is movably mounted between the second horizontal rotating shaft and the main rotating rod.

[0009] Preferably, the feeding and discharging mechanism includes a support frame fixedly mounted on one side above the base, a cylindrical body horizontally fixedly mounted above the support frame, a first motor fixedly mounted on the cylindrical body, a conveying component fixedly mounted at the power output end of the first motor, a dispersing table fixedly mounted at equal intervals on the outer surface of the conveying component, a feeding pipe fixedly mounted above the cylindrical body, a guiding pipe fixedly mounted below the cylindrical body, a first longitudinal rotating shaft rotatably mounted below the support frame, a conveyor belt rotatably mounted on the outer surface of the first longitudinal rotating shaft, and a drive motor fixedly mounted at one end of the first longitudinal rotating shaft.

[0010] Preferably, the feeding assembly includes a vertical rod disposed on the secondary straight inclined gear, with feeding rods uniformly fixedly installed on the lower end of the outer surface of the vertical rod, and the vertical rod and the protective shell are rotatably connected.

[0011] Preferably, the power assembly includes a friction main wheel disposed on one side of the friction secondary wheel, the friction main wheel is fixedly mounted on the output shaft of the power motor, and the power motor is fixedly mounted on one side of the mounting plate.

[0012] Preferably, the two ends of the fixing rod are fixedly installed on the first fixing end plate and the second fixing end plate respectively, and the friction pair wheel and the second fixing end plate are rotatably connected by a bearing.

[0013] Preferably, the first rotating assembly includes a first belt disposed between the second transverse rotating shaft and the main rotating rod, and a second tensioning shaft is rotatably mounted on the inner side of the first belt.

[0014] Preferably, the conveying component includes a first horizontal rotating shaft disposed at the power output end of the first motor, and an auger blade is fixedly mounted on the outer surface of the first horizontal rotating shaft.

[0015] Preferably, a first tensioning shaft is rotatably mounted between the first longitudinal rotating shafts, and the first tensioning shaft is rotatably mounted inside the conveyor belt.

[0016] The beneficial effects are:

[0017] This utility model discloses a sand screening machine for construction engineering. Through a set drum screening mechanism, the starting power component drives the rotating screen cylinder to rotate via a friction pair wheel, causing the sand and gravel inside the rotating screen cylinder to roll. A second belt drives the main rotating rod to rotate, which in turn drives the first belt to rotate, and also drives the second horizontal rotating shaft and nylon brush to rotate and brush the outer surface of the rotating screen cylinder. The rotation of the main rotating rod drives the main straight inclined gear to rotate and mesh with the secondary straight inclined gear to rotate, causing the vertical rod and the material-pulling rod to rotate, thus separating and screening the sand and gravel inside the rotating screen cylinder. This ensures the sand screening effect, clears the mud and sand clogging the rotating screen cylinder, reduces the difficulty for fine sand and gravel to pass through the rotating screen cylinder, and lowers the risk of clogging. It is highly practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front view structural diagram of the present invention;

[0020] Figure 3 This is a front view cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model from another perspective;

[0022] Figure 5 This is a schematic diagram of the left-side cross-sectional structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the material feeding assembly structure of this utility model.

[0024] In the diagram: 1. Base; 2. Feeding / Discharging Mechanism; 201. Support Frame; 202. Cylindrical Body; 203. First Horizontal Rotary Shaft; 204. First Motor; 205. Screwdriver Blade; 206. Dispersing Table; 207. Feed Pipe; 208. Feed Guide Pipe; 209. First Vertical Rotary Shaft; 2091. First Tensioning Shaft; 210. Conveyor Belt; 211. Drive Motor; 3. Drum Screening Mechanism; 301. First Fixed End Plate; 3011. Second Fixed End Plate; 302. Rotating Screen Cylinder; 302 1. Friction wheel; 303. Second horizontal rotating shaft; 3031. Nylon brush; 304. Mounting plate; 3041. Second tensioning shaft; 3042. First belt; 305. Main rotating rod; 3051. Fixing rod; 306. Protective shell; 307. Main straight helical gear; 308. Secondary straight helical gear; 309. Vertical rod; 3091. Material feeding rod; 310. Friction main wheel; 311. Power motor; 312. Third tensioning shaft; 313. Second belt; 314. Discharge arc plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figure 1-6One embodiment of this utility model is a sand screening machine for construction engineering, including a base 1, an infeed and discharge mechanism 2 above the base 1, and a drum screening mechanism 3 on one side of the infeed and discharge mechanism 2.

[0029] In this embodiment: the feeding / discharging mechanism 2 includes a support frame 201 fixedly mounted on one side above the base 1. A cylindrical body 202 is horizontally fixedly mounted above the support frame 201. A first motor 204 is fixedly mounted on the cylindrical body 202. A conveying component is fixedly mounted at the power output end of the first motor 204. A dispersing table 206 is equidistantly fixedly mounted on the outer surface of the conveying component. The dispersing table 206 is used to initially disperse large pieces of sand and gravel. A feed pipe 207 is fixedly mounted above the cylindrical body 202. A guide pipe 208 is fixedly mounted below the cylindrical body 202. A first longitudinal rotating shaft 209 is vertically and rotatably mounted below the support frame 201. A conveyor belt 210 is rotatably mounted on the outer surface of the first longitudinal rotating shaft 209. A drive motor 211 is fixedly mounted at one end of the first longitudinal rotating shaft 209. The conveying component includes a first transverse rotating shaft 203 located at the power output end of the first motor 204. An auger blade 205 is fixedly mounted on the outer surface of the first transverse rotating shaft 203. The auger blade 205 is used to transport the pre-disintegrated sand and gravel. A first tensioning shaft 2091 is rotatably mounted between the first longitudinal swivel shafts 209, and the first tensioning shaft 2091 is rotatably mounted inside the conveyor belt 210.

[0030] In this embodiment: the drum screening mechanism 3 includes a first fixed end plate 301 fixedly disposed on one side of the feeding and discharging mechanism 2. A rotating screen cylinder 302 is rotatably mounted on the first fixed end plate 301. A friction pair wheel 3021 is fixedly mounted on the outer surface of one end of the rotating screen cylinder 302. A second fixed end plate 3011 is rotatably mounted on one end of the friction pair wheel 3021. An installation plate 304 is fixedly mounted on one side above the base 1. A second horizontal rotating shaft 303 is rotatably mounted on the installation plate 304. Nylon brushes 3031 are evenly mounted on the outer surface of the second horizontal rotating shaft 303. A main rotating rod 305 is rotatably mounted inside the rotating screen cylinder 302. Protective shells 306 are fixedly mounted at equal intervals on the outer surface of the main rotating rod 305. A fixed rod 3051 is arranged parallel above the main rotating rod 305. The protective shell 306 and the fixed rod 3051 are horizontally fixedly mounted. The main rotating rod 305 and the protective shell 306 are connected by bearings. A main helical gear 307 is fixedly mounted on the outer surface of the main rotating rod 305. A secondary helical gear 308 is meshed on one side of the main helical gear 307, and the main helical gear 307 and the secondary helical gear 308 are staggered at 90 degrees. A material feeding assembly is fixedly mounted on the secondary helical gear 308. A power assembly is rotatably mounted on one side of the friction wheel 3021. A second belt 313 is rotatably mounted between the power assembly and the main rotating rod 305. A third tensioning shaft 312 is rotatably mounted inside the second belt 313. A discharge arc plate 314 is horizontally fixed on the second fixed end plate 3011 and is fixedly mounted through the mounting plate 304. A first rotating assembly is movably mounted between the second horizontal rotating shaft 303 and the main rotating rod 305. The first rotating assembly includes a first belt 3042 disposed between the second horizontal rotating shaft 303 and the main rotating rod 305. A second tensioning shaft 3041 is rotatably mounted inside the first belt 3042. The material-dispensing assembly includes a vertical rod 309 mounted on the secondary spur gear 308. Dispensing rods 3091 are evenly fixedly installed on the lower end of the outer surface of the vertical rod 309. The vertical rod 309 is rotatably connected to the protective shell 306. The dispensing rods 3091 are umbrella-shaped to facilitate the dispensing and breaking up of sand and gravel. The power assembly includes a friction main wheel 310 mounted on one side of the friction auxiliary wheel 3021. The friction main wheel 310 is fixedly mounted on the output shaft of a power motor 311, which is fixedly mounted on one side of the mounting plate 304. The protective shell 306 protects the main spur gear 307 and the secondary spur gear 308. The friction auxiliary wheel 3021 is rotatably connected to the second fixed end plate 3011 via bearings.

[0031] Working principle: In operation, the first motor 204 is started to drive the conveying assembly and the dispersing table 206 to rotate. The sand and gravel to be screened are fed into the cylindrical body 202 through the feed pipe 207. The rotating conveying assembly and the dispersing table 206 initially disperse the large pieces of sand and gravel. After a certain period of dispersal, the power motor 311 is started to drive the friction main wheel 310 to rotate. At the same time, the friction secondary wheel 3021 drives the rotating screen cylinder 302 to rotate. The material enters the rotating screen cylinder 302 through the feed pipe 208. Simultaneously, the second belt 313 drives the main rotating rod 305 to rotate, causing the main straight inclined gear 307 fixedly installed on the outer surface of the main rotating rod 305 inside the protective shell 306 to rotate. The secondary straight inclined gear 308 meshing on one side rotates, driving the vertical rod 309 and the material-pulling rod 3091 to rotate in opposite directions. The sand and gravel inside the rotating screen cylinder 302 are agitated and rotated. At the same time, the protective shell 306 protects the main straight inclined gear 307 and the secondary straight inclined gear 308. When the main rotating rod 305 rotates, the first belt 3042 drives the second horizontal rotating shaft 303 and the nylon brush 3031 to rotate, which can clear the mud and sand and gravel blocking the outer surface of the rotating screen cylinder 302, reducing the difficulty for fine sand and gravel to pass through the rotating screen cylinder 302. The large stones that are broken off are discharged through the discharge arc plate 314. The screened sand particles fall into the conveyor belt 210 above the rotating screen cylinder 302. The drive motor 211 is started to drive the first longitudinal rotating shaft 209 and the first tensioning shaft 2091 to rotate, and drive the conveyor belt 210 to move. At the same time, the screened sand particles above the conveyor belt 210 are moved, completing the screening of sand and gravel.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand screening machine for construction work, characterised in that: Includes a base (1), a feeding and discharging mechanism (2) is provided above the base (1), and a drum screening mechanism (3) is provided on one side of the feeding and discharging mechanism (2); The drum screening mechanism (3) includes a first fixed end plate (301) fixedly installed on one side of the feeding and discharging mechanism (2), a rotating screen cylinder (302) is rotatably mounted on the first fixed end plate (301), a friction pair wheel (3021) is fixedly mounted on the outer surface of one end of the rotating screen cylinder (302), a second fixed end plate (3011) is rotatably mounted on one end of the friction pair wheel (3021), an mounting plate (304) is fixedly mounted on one side above the base (1), a second horizontal rotating shaft (303) is rotatably mounted on the mounting plate (304), nylon brushes (3031) are evenly mounted on the outer surface of the second horizontal rotating shaft (303), a main rotating rod (305) is rotatably mounted inside the rotating screen cylinder (302), and protective shells (306) are equidistantly rotatably mounted on the outer surface of the main rotating rod (305). 5) A fixed rod (3051) is arranged parallel above. The protective shell (306) and the fixed rod (3051) are horizontally fixed. A main straight helical gear (307) is fixedly installed on the outer surface of the main rotating rod (305). A secondary straight helical gear (308) is meshed on one side of the main straight helical gear (307). A material feeding component is fixedly installed on the secondary straight helical gear (308). A power component is rotatably installed on one side of the friction wheel (3021). A second belt (313) is rotatably installed between the power component and the main rotating rod (305). A third tensioning shaft (312) is rotatably installed inside the second belt (313). A discharge arc plate (314) is horizontally fixed on the second fixed end plate (3011). A first rotating component is movably installed between the second horizontal rotating shaft (303) and the main rotating rod (305).

2. A sand screening machine for construction work as claimed in claim 1, wherein: The feeding and discharging mechanism (2) includes a support frame (201) fixedly installed on one side above the base (1). A cylindrical body (202) is fixedly installed horizontally above the support frame (201). A first motor (204) is fixedly installed on the cylindrical body (202). A conveying component is fixedly installed at the power output end of the first motor (204). A dispersing table (206) is fixedly installed at equal intervals on the outer surface of the conveying component. A feed pipe (207) is fixedly installed above the cylindrical body (202). A guide pipe (208) is fixedly installed below the cylindrical body (202). A first longitudinal rotating shaft (209) is installed in parallel and longitudinally below the support frame (201). A conveyor belt (210) is installed on the outer surface of the first longitudinal rotating shaft (209). A drive motor (211) is fixedly installed at one end of the first longitudinal rotating shaft (209).

3. A sand screening machine for construction work as claimed in claim 1, wherein: The material feeding assembly includes a vertical rod (309) mounted on a secondary straight helical gear (308). Material feeding rods (3091) are uniformly fixedly installed on the lower end of the outer surface of the vertical rod (309). The vertical rod (309) and the protective shell (306) are rotatably connected.

4. A sand screening machine for construction work as claimed in claim 1, wherein: The power assembly includes a friction main wheel (310) disposed on one side of the friction secondary wheel (3021), and the friction main wheel (310) is fixedly mounted on the output shaft of the power motor (311), which is fixedly mounted on one side of the mounting plate (304).

5. A sand screening machine for construction work as claimed in claim 1, wherein: The two ends of the fixing rod (3051) are respectively fixedly installed on the first fixing end plate (301) and the second fixing end plate (3011), and the friction pair wheel (3021) is rotatably connected to the second fixing end plate (3011).

6. A sand screening machine for construction work as claimed in claim 1, wherein: The first rotating assembly includes a first belt (3042) disposed between the second horizontal rotating shaft (303) and the main rotating rod (305), and a second tensioning shaft (3041) is rotatably mounted on the inner side of the first belt (3042).

7. A sand screening machine for construction work as claimed in claim 2, wherein: The conveying assembly includes a first horizontal rotating shaft (203) disposed at the power output end of the first motor (204), and an auger blade (205) is fixedly mounted on the outer surface of the first horizontal rotating shaft (203).

8. A sand screening machine for construction work as claimed in claim 2, wherein: A first tensioning shaft (2091) is longitudinally rotatably mounted between the first longitudinal rotating shafts (209), and the first tensioning shaft (2091) is rotatably mounted inside the conveyor belt (210).

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