Classified screening device for building gravel materials

Abstract

The utility model particularly relates to a building gravel material grading screening device which comprises a bottom frame and a plurality of screening frames, the screening frames are sequentially installed at the upper end of the bottom frame in an inserted mode, driven rods are rotatably installed in the screening frames, screening plates are arranged in the screening frames, and the driven rods are connected with the screening plates. Limiting inserting sleeves connected with the peripheries of the driven rods in an inserted mode are fixedly installed in the middle of the screening plate, a driving motor is fixedly installed in the bottom frame, a driving rod is fixedly installed at the upper end of the driving motor through an output shaft of the driving motor, and positioning inserting holes are formed in the upper ends of the driving rod and the multiple driven rods. The lower end of the driven rod is fixedly provided with a positioning insertion rod which is connected with the positioning insertion hole in an inserted mode, the inner wall of the screening frame is fixedly provided with a first annular clamping block, and the periphery of the lower end of the screening plate is fixedly provided with a second annular clamping block which is connected with the first annular clamping block in a clamped mode. And the screening grading number is adjusted, and the gravel screening effect is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of building construction, specifically to a grading and screening device for building crushed stone. Background Technology

[0002] To improve product quality, optimize resource allocation, and facilitate storage and transportation, thereby increasing production efficiency and enabling quality control, it is necessary to screen building aggregates during construction. To improve the fineness of screening and reduce misscreening and missed screening, multi-stage screening mechanisms are usually set up on the basis of traditional screening. However, most existing multi-stage screening devices are still fixed, which makes it impossible for staff to adjust the number of screening grades according to usage needs. This obviously has significant drawbacks. Therefore, we propose a grading and screening device for building aggregates. Utility Model Content

[0003] The purpose of this invention is to provide a grading and screening device for building aggregates to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a grading and screening device for building aggregate, comprising a base frame and multiple screening frames, wherein the multiple screening frames are sequentially inserted and installed on the upper end of the base frame, a driven rod is rotatably installed inside the screening frame, a screening plate is provided inside the screening frame, a limiting sleeve that is fixedly installed in the middle of the screening plate and inserted into the periphery of the driven rod, a drive motor is fixedly installed inside the base frame, a drive rod is fixedly installed on the upper end of the drive motor through its output shaft, positioning holes are opened at the upper ends of the drive rod and the multiple driven rods, a positioning rod that is inserted into the positioning holes is fixedly installed at the lower end of the driven rod, a first annular locking block is fixedly installed on the inner wall of the screening frame, and a second annular locking block that is locked into the first annular locking block is fixedly installed on the periphery of the lower end of the screening plate.

[0005] Preferably, a limiting rotating seat is fixedly installed in the middle of the screening frame via a connecting rod, a limiting rotating block that is rotatably connected to the limiting rotating seat is fixedly installed in the middle of the driven rod, and a limiting ring is fixedly installed on the inner wall of the screening frame, the limiting ring being located on the upper side of the screening plate.

[0006] Preferably, a first connecting ring is fixedly installed on the upper outer side of the bottom frame and the screening frame, and a second connecting ring is fixedly installed on the lower outer side of the screening frame, with the lower end of the second connecting ring connected to the upper end of the first connecting ring.

[0007] Preferably, the first connecting ring and the second connecting ring have threaded holes at their upper ends, and a limit frame is fixedly installed at the upper end of the second connecting ring. The limit frame has a threaded rod that is rotatably connected to the threaded hole.

[0008] Preferably, a rotating plate is rotatably mounted on the upper end of the limiting frame, a limiting insertion hole is opened on the upper end of the threaded rod, and a limiting rod that is inserted into the limiting insertion hole is fixedly mounted on the lower end of the rotating plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This is a grading and screening device for building aggregates. Multiple screening frames are set on the upper side of the bottom frame. The number of screening frames can be adjusted according to screening requirements. Compared with existing screening devices with fixed structures, this device can significantly improve the screening effect of aggregates.

[0011] This grading and screening device for building aggregates uses a positioning hole and a positioning rod for insertion connection. After the screening frame is installed, each driven rod can be sequentially inserted and installed on the upper end of the drive rod, so that the drive motor can drive each screening plate to rotate with it. Through the snap-fit ​​connection between the first ring block and the second ring block, the screening plate can be driven to vibrate up and down when it rotates, thereby achieving the effect of screening the aggregate at its upper end.

[0012] This grading and screening device for building aggregates uses a limit rod and limit hole for insertion connection and a threaded rod and threaded hole for threaded connection. This allows the rotating plate to drive the threaded rod to move, achieving the effect of positioning between adjacent screening frames and between the screening frame and the bottom frame. Compared with the existing method of positioning with threaded rod and threaded hole, this device does not require disassembly of the threaded rod, thus avoiding the loss of the threaded rod. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of the bottom frame and the screening frame of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the bottom frame and the filter box of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal split structure of the filter box of this utility model;

[0016] Figure 4 This is a schematic diagram of the internal disassembled structure of the threaded rod of this utility model.

[0017] In the picture:

[0018] 1. Base frame; 11. Drive motor; 12. Drive rod;

[0019] 2. Screening frame; 21. Limiting rotating seat; 22. Driven rod; 23. Screening plate; 24. Limiting sleeve; 25. First annular locking block; 26. Second annular locking block; 27. Limiting ring; 28. Limiting rotating block; 29. ​​Positioning rod; 291. Positioning hole;

[0020] 3. First connecting ring; 31. Second connecting ring; 32. Threaded hole; 33. Limiting frame; 34. Threaded rod; 35. Rotating plate; 36. Limiting insertion hole; 37. Limiting rod. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a grading and screening device for building aggregate, comprising a base frame 1 and multiple screening frames 2, the multiple screening frames 2 being sequentially inserted and installed on the upper end of the base frame 1, a driven rod 22 being rotatably installed inside the screening frame 2, a screening plate 23 being provided inside the screening frame 2, a limiting sleeve 24 being fixedly installed in the middle of the screening plate 23 and inserted into the periphery of the driven rod 22, a drive motor 11 being fixedly installed inside the base frame 1, a drive rod 12 being fixedly installed on the upper end of the drive motor 11 through its output shaft, a positioning insertion hole 291 being opened on the upper end of the drive rod 12 and the multiple driven rods 22, a positioning insertion rod 29 being fixedly installed on the lower end of the driven rod 22 and inserted into the positioning insertion hole 291, a first annular locking block 25 being fixedly installed on the inner wall of the screening frame 2, and a second annular locking block 26 being fixedly installed on the periphery of the lower end of the screening plate 23 and engaged with the first annular locking block 25.

[0023] Working principle: When in use, according to the screening and grading requirements, the corresponding number of screening boxes 2 are installed on the upper end of the bottom frame 1 in sequence, and the positioning rod 29 is inserted into the positioning hole 291.

[0024] At the top of the uppermost screening frame 2, the crushed stone is poured into the screening frame 2. The drive motor 11 is started. The drive motor 11 drives the drive rod 12 to rotate through its output shaft. Through the insertion connection between the positioning hole 291 and the positioning rod 29, the rotating drive rod 12 can drive each driven rod 22 to rotate with it. The rotating driven rod 22 can drive each screening plate 23 to rotate through the insertion connection between it and the limiting sleeve 24. Through the locking effect between the first annular locking block 25 and the second annular locking block 26, the screening plate 23 can be driven to vibrate up and down when it rotates. Through the movement of each screening plate 23, the crushed stone can be graded and screened.

[0025] After screening is completed, each screening box 2 can be disassembled in turn to recycle the crushed stone material that has been graded and screened inside the bottom frame 1.

[0026] As a further description of the above technical solution: a limiting rotating seat 21 is fixedly installed in the middle of the screening frame 2 via a connecting rod, a limiting rotating block 28 that is rotatably connected to the limiting rotating seat 21 is fixedly installed in the middle of the driven rod 22, and a limiting ring 27 is fixedly installed on the inner wall of the screening frame 2, the limiting ring 27 being located on the upper side of the screening plate 23.

[0027] By rotating the limiting rotating seat 21 and the limiting rotating block 28, the movement direction of the driven rod 22 can be restricted within the screening frame 2. By setting the limiting ring 27 and cooperating with the first annular locking block 25, the vertical movement range of the screening plate 23 can be restricted.

[0028] As a further description of the above technical solution: A first connecting ring 3 is fixedly installed on the upper periphery of the bottom frame 1 and the screening frame 2, and a second connecting ring 31 is fixedly installed on the lower periphery of the screening frame 2. The lower end of the second connecting ring 31 is connected to the upper end of the first connecting ring 3. Threaded holes 32 are opened at the upper ends of the first connecting ring 3 and the second connecting ring 31. A limit frame 33 is fixedly installed at the upper end of the second connecting ring 31. A threaded rod 34 that is rotatably connected to the threaded hole 32 is provided in the limit frame 33. A rotating plate 35 is rotatably installed at the upper end of the limit frame 33. A limit insertion hole 36 is opened at the upper end of the threaded rod 34. A limit insertion rod 37 that is inserted into the limit insertion hole 36 is fixedly installed at the lower end of the rotating plate 35.

[0029] Specifically, when installing each screening box 2, the positions of the first connecting ring 3 and the second connecting ring 31 can be aligned with each other. Then, within the limiting frame 33, the rotating plate 35 is rotated. Through the insertion connection between the limiting rod 37 and the limiting hole 36, the rotating plate 35 can drive the threaded rod 34 to rotate. The rotating threaded rod 34, through the threaded connection between it and the threaded hole 32 at the second connecting ring 31, can drive the threaded rod 34 to move downward spirally, thereby connecting it with the threaded hole 32 in the middle of the first connecting ring 3. This allows the first connecting ring 3 and the second connecting ring 31 to be connected to each other, achieving the effect of positioning the connection between adjacent screening boxes 2 and the connection between the screening box 2 and the bottom frame 1.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grading and screening device for building aggregate, comprising a base frame (1) and multiple screening frames (2), characterized in that: Multiple screening frames (2) are sequentially inserted and installed on the upper end of the bottom frame (1). A driven rod (22) is rotatably installed inside the screening frame (2). A screening plate (23) is provided inside the screening frame (2). A limiting sleeve (24) that is inserted into the outer periphery of the driven rod (22) is fixedly installed in the middle of the screening plate (23). A drive motor (11) is fixedly installed inside the bottom frame (1). A drive rod (12) is fixedly installed on the upper end of the drive motor (11) through its output shaft. A positioning insertion hole (291) is opened on the upper end of the drive rod (12) and multiple driven rods (22). A positioning insertion rod (29) that is inserted into the positioning insertion hole (291) is fixedly installed on the lower end of the driven rod (22). A first annular locking block (25) is fixedly installed on the inner wall of the screening frame (2). A second annular locking block (26) that is locked into the first annular locking block (25) is fixedly installed on the outer periphery of the lower end of the screening plate (23).

2. The grading and screening device for building aggregate according to claim 1, characterized in that: A limiting rotating seat (21) is fixedly installed in the middle of the screening frame (2) by a connecting rod. A limiting rotating block (28) that is rotatably connected to the limiting rotating seat (21) is fixedly installed in the middle of the driven rod (22). A limiting ring (27) is fixedly installed on the inner wall of the screening frame (2). The limiting ring (27) is located on the upper side of the screening plate (23).

3. The grading and screening device for building aggregate according to claim 1, characterized in that: A first connecting ring (3) is fixedly installed on the upper side of the outer periphery of the bottom frame (1) and the filter frame (2), and a second connecting ring (31) is fixedly installed on the lower side of the outer periphery of the filter frame (2). The lower end of the second connecting ring (31) is connected to the upper end of the first connecting ring (3).

4. The grading and screening device for building aggregate according to claim 3, characterized in that: The first connecting ring (3) and the second connecting ring (31) have threaded holes (32) at their upper ends. A limit frame (33) is fixedly installed at the upper end of the second connecting ring (31). A threaded rod (34) that is rotatably connected to the threaded hole (32) is provided in the limit frame (33).

5. The grading and screening device for building aggregate according to claim 4, characterized in that: The upper end of the limiting frame (33) is rotatably mounted with a rotating plate (35), the upper end of the threaded rod (34) is provided with a limiting insertion hole (36), and the lower end of the rotating plate (35) is fixedly mounted with a limiting insertion rod (37) that is inserted into the limiting insertion hole (36).

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