Sand screening device for building construction
By designing an adjustment mechanism and a double-layer roller screening mechanism in the sand screening device for construction, the problem of sand flowing out in the existing device without completing the screening is solved, and the full screening and efficient screening effect of sand is achieved.
Patent Information
- Application Number
- CN202420650903.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-04-01
AI Technical Summary
During the sand screening process of existing roller sand screening devices, sand often flows out from the inclined low end of the sand screening device before sufficient screening is completed, resulting in poor screening effect.
A sand screening device for construction is designed, using an adjustment mechanism to adjust the inclination angle of the screen seat, and through a double-layer drum screening mechanism, the difference between small screen holes and large screen holes is used to perform multiple screenings to ensure sufficient screening of sand.
The full screening of sand is achieved, avoiding the problem of sand flowing out before the screening is completed, and improving the screening efficiency and effect.
Smart Images
Figure CN222568325U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and in particular relates to a sand screening device for building construction. Background Art
[0002] Concrete is a commonly used building material in the process of construction. It is mainly made of cement as the gelling material, mixed with water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and is evenly stirred, compacted, formed, and cured to form an artificial stone. When using sand, since there are more large particles of stone in the natural sand, it must be screened before use to remove the larger particles in the sand.
[0003] When the existing drum sand screening device is screening the sand, the sand often flows out from the inclined lower end of the drum sand screening device before the sand is fully screened. For this reason, we propose a sand screening device for construction. Utility Model Content
[0004] The purpose of the utility model is to provide a sand screening device for construction to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sand screening device for construction, comprising a screen seat, an adjusting mechanism is provided at the lower end of the screen seat, a screening mechanism is provided at the upper end of the screen seat, the adjusting mechanism comprises a sliding groove, and the sliding groove is arranged on the lower surface of the screen seat, the interior of the sliding groove is slidably connected to a supporting slide seat, the interior of the supporting slide seat is hinged with a first supporting rod through a hinge shaft, the first supporting rod is slidably connected to a supporting column, the inner bottom wall of the support column is provided with a first servo motor, the output end of the first servo motor is connected with a threaded rod through a coupling transmission, and the threaded rod is threadedly connected to the first support rod, an articulated seat is provided on the side of the lower surface of the screen seat away from the sliding groove, and the interior of the articulated seat is hinged with a second support rod through a hinge shaft.
[0006] Preferably, the screening mechanism includes a first drum screen, and both ends of the first drum screen are rotatably connected to the screen seat, the circumferential surface of the first drum screen is provided with small sieve holes, the inner circumferential surface of the first drum screen is provided with a connecting rod, and a second drum screen is provided at one end of the connecting rod away from the first drum screen, and the inner circumferential surface of the second drum screen is provided with large sieve holes.
[0007] Preferably, a gear plate is provided on the circumferential surface of the first drum screen, a second servo motor is provided on the upper surface of the screen seat, an output end of the second servo motor is connected to a driving gear via a coupling, and the driving gear is meshingly connected to the gear plate.
[0008] Preferably, a lower hopper is provided at the lower end of the first drum screen, and both ends of the lower hopper are connected to the screen seat, and the diameter of the large screen hole is larger than that of the small screen hole.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] (1) In the sand screening device for construction, when the sand is roughly evenly distributed inside the second drum screen and the first drum screen and is screened, the inclination angle of the screen seat is adjusted by the adjustment mechanism, so that the first support rod and the second support rod are at the same horizontal height. At this time, when the sand is screened, the sand will be discharged from the first drum screen and the second drum screen, so that the sand can be adequately screened. After the sand is screened to a certain extent, the height of the first support rod can be increased. At this time, the screen seat is in an inclined state, and the sand that falls into the screening mechanism will flow out from the inclined lower end of the screen seat.
[0011] (2) In the sand screening device for construction, the second drum screen will screen out some large particles in the screen through the large screen holes, and the smaller fine sand will fall to the circumferential surface of the first drum screen, and the smaller fine sand will be screened again by the first drum screen, and the fine sand that meets the specification requirements will fall to the lower hopper through the first drum screen, and finally be discharged from the discharge port of the lower hopper. This method can facilitate the full screening of the sand. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0013] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;
[0014] Figure 3 For the utility model Figure 2 A magnified view of the structure at center A;
[0015] Figure 4 It is a three-dimensional structural schematic diagram of the screening mechanism of the utility model.
[0016] In the figure: 10, screen seat; 20, adjustment mechanism; 21, sliding groove; 22, supporting slide; 23, first supporting rod; 24, supporting column; 25, first servo motor; 26, threaded rod; 27, hinged seat; 28, second supporting rod; 30, screening mechanism; 31, first drum screen; 32, small sieve holes; 33, connecting rod; 34, second drum screen; 35, large sieve holes; 36, gear plate; 37, second servo motor; 38, driving gear; 39, lower hopper. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1-Figure 4 The utility model provides a sand screening device for construction, including a screen seat 10, an adjusting mechanism 20 is provided at the lower end of the screen seat 10, a screening mechanism 30 is provided at the upper end of the screen seat 10, the adjusting mechanism 20 includes a sliding groove 21, and the sliding groove 21 is arranged on the lower surface of the screen seat 10, a support slide 22 is slidably connected inside the sliding groove 21, a first support rod 23 is hinged inside the support slide 22 through a hinge shaft, a support column 24 is slidably connected to the first support rod 23, a first servo motor 25 is provided on the inner bottom wall of the support column 24, an output end of the first servo motor 25 is connected to a threaded rod 26 through a coupling transmission, and the threaded rod 26 is threadedly connected to the first support rod 23, a hinge seat 27 is provided on the side of the lower surface of the screen seat 10 away from the sliding groove 21, and a second support rod 28 is hinged inside the hinge seat 27 through a hinge shaft.
[0019] It should be noted that the device can be supported by the adjusting mechanism 20. When the sand is roughly evenly distributed inside the screening device and is screened, the inclination angle of the sieve seat 10 can be adjusted by the adjusting mechanism 20, that is, when the screening mechanism 30 is screening the sand, the first support rod 23 and the second support rod 28 can be at the same horizontal height. At this time, the sieve seat 10 will be in a horizontal state, and the sand can be fully screened. After the sand is screened to a certain extent, the height of the first support rod 23 can be increased. At this time, the sieve seat 10 is in an inclined state, and the sand falling in the screening mechanism 30 will flow out from the inclined lower end of the sieve seat 10; when the adjusting mechanism 20 is working, the first servo motor 25 will drive the threaded rod 26 rotates. When the threaded rod 26 rotates, under the rotation limit of the support column 24, the first support rod 23 can move up and down in the support column 24. When the first support rod 23 rises, the first support rod 23 will push the supporting slide 22 to slide to the right in the sliding groove 21, and at the same time push the sieve seat 10 to tilt upward with the hinge of the second support rod 28 and the hinge seat 27 as the center. Under this adjustment, it can be used to discharge sand from the device. After the sand is discharged, the threaded rod 26 can be driven by the first servo motor 25 to rotate in the opposite direction. At this time, the first support rod 23 will shrink, thereby driving the sieve seat 10 to descend, until the sieve seat 10 stops working when it is slightly tilted, and it is convenient to feed and screen the next batch of materials.
[0020] The screening mechanism 30 includes a first drum screen 31, and both ends of the first drum screen 31 are rotatably connected to the screen seat 10, and the screen seat 10 can support the first drum screen 31. The circumferential surface of the first drum screen 31 is provided with small screen holes 32, and the inner circumferential surface of the first drum screen 31 is provided with a connecting rod 33. The end of the connecting rod 33 away from the first drum screen 31 is provided with a second drum screen 34, wherein the connecting rod 33 is provided between the first drum screen 31 and the second drum screen 34. The purpose is to The first drum screen 31 is supported and fixed, the inner circumferential surface of the second drum screen 34 is provided with large sieve holes 35, wherein the diameter of the large sieve holes 35 is larger than that of the small sieve holes 32, the circumferential surface of the first drum screen 31 is provided with a gear plate 36, the upper surface of the screen seat 10 is provided with a second servo motor 37, the output end of the second servo motor 37 is connected to a driving gear 38 through a coupling transmission, and the driving gear 38 is meshed with the gear plate 36, the lower end of the first drum screen 31 is provided with a lower hopper 39, and both ends of the lower hopper 39 are connected to the screen seat 10.
[0021] It should be noted that when screening the sand, the sand can be fed into the second drum screen 34, and the second servo motor 37 is started to work. The operation of the second servo motor 37 can drive the driving gear 38 to rotate, and the rotation of the driving gear 38 can drive the gear plate 36 to rotate, thereby driving the first drum screen 31 to rotate inside the screen seat 10. When the first drum screen 31 rotates, the second drum screen 34 can be driven to rotate through the action of the connecting rod 33. The rotation of the second drum screen 34 can screen the sand inside it. At this time, the second drum screen 34 will screen out some large particles in the screen through the large sieve holes 35, and the smaller fine sand will fall to the circumferential surface of the first drum screen 31. At this time, the first drum screen 31 will screen the smaller fine sand again through the small sieve holes 32, and the fine sand that meets the specification requirements will fall to the lower hopper 39 through the first drum screen 31, and finally be discharged from the discharge port of the lower hopper 39. This method can facilitate the full screening of the sand.
[0022] Working principle and use process of the utility model: when the device is used, when the sand is roughly evenly distributed inside the second drum screen 34 and the first drum screen 31 and is screened, the inclination angle of the screen seat 10 is adjusted by the adjustment mechanism 20, that is, when the screening mechanism 30 is screening the sand, the first support rod 23 and the second support rod 28 can be at the same horizontal height, and the screen seat 10 will be in a horizontal state. At this time, when the sand is screened, the sand will be discharged from the first drum screen 31 and the second drum screen 34, so that the sand can have a sufficient screening effect. When the sand is screened When the adjustment mechanism 20 is in operation, the first servo motor 25 drives the threaded rod 26 to rotate. When the threaded rod 26 rotates, the first support rod 23 can move up and down in the support column 24 under the rotation limit of the support column 24. When the first support rod 23 rises, the first support rod 23 pushes the support slide 22 to slide to the right in the slide groove 21, and pushes the support slide 22 to slide to the right in the slide groove 21. The sieve seat 10 is tilted upward with the hinged portion of the second support rod 28 and the hinged seat 27 as the center. Under this adjustment, the sand can be discharged from the device. After the sand is discharged, the first servo motor 25 can be used to drive the threaded rod 26 to rotate in the opposite direction. At this time, the first support rod 23 will shrink, thereby driving the sieve seat 10 to descend until the sieve seat 10 stops working when it is slightly tilted. At this time, it is convenient to screen the next batch of materials. The working mode of the screening mechanism 30 is to start the second servo motor 37, and the second servo motor 37 drives the gear plate 36 to rotate through the driving gear 38 The first drum screen 31 is driven to rotate inside the screen seat 10, and the first drum screen 31 can drive the second drum screen 34 to rotate through the action of the connecting rod 33. At this time, the second drum screen 34 will screen out some large particles in the screen through the large screen holes 35, and the smaller fine sand will fall to the circumferential surface of the first drum screen 31, and the smaller fine sand will be screened again by the first drum screen 31, and the fine sand that meets the specification requirements will fall to the lower hopper 39 through the first drum screen 31, and finally be discharged from the discharge port of the lower hopper 39. This method can facilitate the full screening of sand.
[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sand screening device for construction, comprising a screen seat (10), characterized in that: The lower end of the sieve seat (10) is provided with an adjustment mechanism (20), and the upper end of the sieve seat (10) is provided with a screening mechanism (30), the adjustment mechanism (20) comprises a sliding groove (21), and the sliding groove (21) is arranged on the lower surface of the sieve seat (10), the interior of the sliding groove (21) is slidably connected with a support slide seat (22), the interior of the support slide seat (22) is hinged with a first support rod (23) through a hinge shaft, the first support rod (23) is slidably connected with a support column (24), the inner bottom wall of the support column (24) is provided with a first servo motor (25), the output end of the first servo motor (25) is connected with a threaded rod (26) through a coupling transmission, and the threaded rod (26) is threadedly connected to the first support rod (23), and a hinge seat (27) is provided on the side of the lower surface of the sieve seat (10) away from the sliding groove (21), and the interior of the hinge seat (27) is hinged with a second support rod (28) through a hinge shaft.
2. A sand screening device for construction according to claim 1, characterized in that: The screening mechanism (30) comprises a first drum screen (31), and both ends of the first drum screen (31) are rotatably connected to the screen seat (10), the circumferential surface of the first drum screen (31) is provided with small screen holes (32), the inner circumferential surface of the first drum screen (31) is provided with a connecting rod (33), the end of the connecting rod (33) away from the first drum screen (31) is provided with a second drum screen (34), and the inner circumferential surface of the second drum screen (34) is provided with large screen holes (35).
3. A sand screening device for construction according to claim 2, characterized in that: A gear plate (36) is provided on the circumferential surface of the first drum screen (31), a second servo motor (37) is provided on the upper surface of the screen seat (10), an output end of the second servo motor (37) is connected to a driving gear (38) via a coupling, and the driving gear (38) is meshingly connected to the gear plate (36).
4. A sand screening device for construction according to claim 3, characterized in that: A lower hopper (39) is provided at the lower end of the first drum screen (31), and both ends of the lower hopper (39) are connected to the screen seat (10). The diameter of the large screen hole (35) is larger than that of the small screen hole (32).