Gravel aggregate grading screening device

Abstract

The utility model relates to the technical field of gravel aggregate screening, in particular to a gravel aggregate grading screening device which comprises a box body and a screening mechanism, and the screening mechanism is arranged in the box body; the screening mechanism comprises a motor fixedly installed at the top of the box body, an output shaft of the motor is fixedly connected with a telescopic rod, the bottom of the telescopic rod is fixedly connected with a fixing frame, the inner side of the fixing frame is slidably connected with a connecting frame, and the bottom of the connecting frame is fixedly connected with a screening net. A fixing plate is fixedly connected to the inner wall of the box body and located below the fixing frame. According to the gravel aggregate grading screening device, the screening mechanism is arranged, gravel is screened layer by layer through a screening net and a filtering net, meanwhile, through a connecting frame and a limiting frame, the screening net and the filtering net can be detached conveniently, the screening net and the filtering net can be cleaned and replaced conveniently, meanwhile, a motor drives a telescopic rod to rotate, and the telescopic rod drives a fixing frame to rotate; the materials are impacted and rubbed in the rotary screening process, and the screening speed is increased.

Description

Technical Field

[0001] The present application relates to the technical field of sand and gravel aggregate screening, and in particular to a sand and gravel aggregate grading and screening device. Background Art

[0002] Sand and gravel aggregate is a general term for sand, gravel, crushed stone, block stone, and other materials in water conservancy projects. Sand and gravel aggregate is the main building material for structures such as concrete and masonry in water conservancy projects. Aggregates are divided into coarse aggregate and fine aggregate according to particle size. Coarse aggregate is rock particles with a particle size greater than 4.75 mm, and fine aggregate is rock particles with a particle size less than 4.75. Sand and gravel aggregates need to be graded and screened during processing.

[0003] According to a sand and gravel aggregate screening machine disclosed in Chinese patent CN216679005U, the utility model is a sand and gravel aggregate screening machine, which introduces aggregates from the feed port into the machine body, and the aggregates are preliminarily screened by the primary screening device, and the fine materials fall onto the secondary screening device below the primary screening device, and the remaining coarse materials fall out from the discharge trough, and the fine materials are secondary screened by the secondary screening device and fall into the storage bin for storage. However, the utility model still has the following problems: different motors are used to drive different screening nets to vibrate, which will increase the purchase cost and maintenance cost, so a sand and gravel aggregate grading screening device is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In response to the shortcomings of the prior art, the present application provides a sand and gravel aggregate grading and screening device, which has the advantages of a single motor driving the filter screen to rotate, thereby improving screening efficiency and saving costs, and solves the problem that different motors of the utility model drive different screening screens to vibrate, resulting in high costs.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a sand and gravel aggregate grading and screening device, comprising a box body and a screening mechanism, wherein the screening mechanism is arranged inside the box body; the screening mechanism comprises a motor fixedly installed on the top of the box body, the output shaft of the motor is fixedly connected to a telescopic rod, the bottom of the telescopic rod is fixedly connected to a fixing frame, the inner side of the fixing frame is slidably connected to a connecting frame, the bottom of the connecting frame is fixedly connected to a screening net, a fixing plate is fixedly connected to the inner wall of the box body and located below the fixing frame, a filter net is arranged on the inner side of the fixing plate, the outer side of the fixing frame is threadedly connected to bolts, the top of the fixing plate is fixedly connected to a wave boss, and the bottom of the fixing frame is provided with a concave-convex groove matching the size of the wave boss.

[0006] The present application adopts the above technical solution and uses a screening mechanism to grade sand and gravel layer by layer.

[0007] Furthermore, a feed hopper is fixedly connected to the top of the box body, a connecting plate is fixedly connected to the inner wall of the box body and located below the fixed plate, the connecting plate is inclined, a discharge port is opened on the right side of the box body and close to the connecting plate, and a sealing cover with a size matching the discharge port is arranged on the right side of the box body.

[0008] The beneficial effect of adopting the above further solution is that the screening sand and gravel can be easily discharged through the connecting plate.

[0009] Furthermore, the filter holes of the screening net and the filter net are of different sizes, the number of the fixing frame and the screening net is two, and the fixing frame is provided with a slide groove matched with the size of the connecting frame.

[0010] The beneficial effect of adopting the above further scheme is that the sand and gravel are screened through the screening net and the filter net.

[0011] Furthermore, the cross section of the fixing frame is U-shaped, one end of the bolt extends to the inside of the connecting frame, and the inside of the fixing frame and the connecting frame are both provided with a thread groove matched with the size of the bolt.

[0012] The beneficial effect of adopting the above further solution is that the thread groove facilitates the screwing in and out of the bolt.

[0013] Furthermore, a ring frame is fixedly connected to the top of the fixed plate, the ring frame is located outside the filter screen, the top of the ring frame is in contact with the fixed frame, and the ring frame is inclined.

[0014] The beneficial effect of adopting the above further solution is that the annular frame makes it easy for sand and gravel to fall onto the filter net.

[0015] Furthermore, the outer side of the filter screen is fixedly connected to a limiting frame, and the limiting frame and the left and right sides of the limiting frame are fixedly connected to springs, and the ends of the springs are fixedly connected to connecting rods.

[0016] The beneficial effect of adopting the above further solution is that the filter screen can be easily removed from the fixing plate through the limit frame, the spring and the connecting rod.

[0017] Furthermore, the two connecting rods are located inside the limiting frame and extend to the inside of the fixing plate, and a movable hole matching the size of the connecting rods is opened inside the fixing plate.

[0018] The beneficial effect of adopting the above further solution is that the connecting rod is clamped through the movable hole.

[0019] Furthermore, a pull rod is fixedly connected to the bottom of the connecting rod, and the pull rod extends to the outside of the limiting frame. The limiting frame is provided with a movable groove adapted to the size of the pull rod, and a switch door is provided on the front of the box.

[0020] The beneficial effect of adopting the above further solution is that the connecting rod can be easily pulled through the pull rod.

[0021] Compared with the prior art, the present application provides a sand and gravel aggregate grading and screening device, which has the following beneficial effects:

[0022] The sand and gravel aggregate grading and screening device is provided with a screening mechanism, which can screen sand and gravel aggregates of different sizes layer by layer through the screening net and the filter net, so as to facilitate the use of subsequent staff. At the same time, the connecting frame and the limit frame can facilitate the disassembly of the screening net and the filter net, and facilitate the cleaning and replacement of the screening net and the filter net. At the same time, the motor drives the telescopic rod to rotate, and the telescopic rod drives the fixed frame to rotate, so that the material impacts and rubs in the rotating screening, and the cylinder drives the fixed frame to rise and fall, and the fixed frame vibrates, thereby accelerating the screening speed and increasing the screening efficiency of the screening net. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the internal structure of this application;

[0024] Figure 2 For this application Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a top view of the fixing frame of this application.

[0026] Figure 4 This is a schematic diagram of the external structure of this application.

[0027] In the figure: 1. box body; 2. motor; 3. telescopic rod; 4. fixing frame; 5. connecting frame; 6. screening net; 7. fixing plate; 8. filter net; 9. bolt; 10. feed hopper; 11. connecting plate; 12. ring frame; 13. limit frame; 14. spring; 15. connecting rod; 16. pull rod; 17. wave boss. DETAILED DESCRIPTION

[0028] The following will be combined with the attached examples of the present application Figures 1 to 4 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] See also Figure 1-4In the present embodiment, a sand and gravel aggregate grading and screening device comprises a box body 1 and a screening mechanism, wherein the screening mechanism is arranged inside the box body 1; the screening mechanism comprises a motor 2 fixedly mounted on the top of the box body 1, wherein the output shaft of the motor 2 is fixedly connected with a telescopic rod 3, wherein the telescopic rod 3 comprises a sleeve and an insertion shaft, wherein the sleeve is fixedly connected with the output shaft of the motor 2, wherein a slide groove is provided inside the sleeve in a vertical direction, wherein a sliding key which slides and is inserted into the slide groove is provided on one side of the insertion shaft, and a fixing frame 4 is fixedly connected with the bottom of the telescopic rod 3, wherein the insertion shaft is fixedly connected with the fixing frame 4, and the inner side of the fixing frame 4 is slidingly connected with the fixing frame 4. There is a connecting frame 5, the bottom of which is fixedly connected with a screening net 6, the inner wall of the box body 1 and located below the fixing frame 4 is fixedly connected with a fixing plate 7, the inner side of the fixing plate 7 is provided with a filtering net 8, the outer side of the fixing frame 4 is threadedly connected with a bolt 9, the top of the fixing plate 7 is fixedly connected with a wave boss 17, the bottom of the fixing frame 4 abuts against the wave boss 17, the starting motor 2 can drive the fixing frame 4 to slide through the telescopic rod 3, the fixing frame 4 abuts against the wave boss 17 through gravity, and the height fluctuation of the wave boss 17 drives the fixing frame 4 to shake up and down, thereby enhancing the screening effect.

[0030] Among them, a feed hopper 10 is fixedly connected to the top of the box body 1, a connecting plate 11 is fixedly connected to the inner wall of the box body 1 and located below the fixed plate 7, the connecting plate 11 is inclined, a discharge port is provided on the right side of the box body 1 and close to the connecting plate 11, and a sealing cover matching the size of the discharge port is provided on the right side of the box body 1; the filter holes of the screening net 6 and the filter net 8 have different sizes, and there are two fixed frames 4 and screening nets 6, and the fixed frame 4 is provided with a slide groove matching the size of the connecting frame 5; the cross-section of the fixed frame 4 is U-shaped, one end of the bolt 9 extends to the inside of the connecting frame 5, and the insides of the fixed frame 4 and the connecting frame 5 are provided with threaded grooves matching the size of the bolt 9.

[0031] In addition, a ring frame 12 is fixedly connected to the top of the fixed plate 7, and the ring frame 12 is located on the outside of the filter screen 8. The top of the ring frame 12 is in contact with the fixed frame 4, and the ring frame 12 is inclined; a limiting frame 13 is fixedly connected to the outside of the filter screen 8, and the limiting frame 13, the left and right sides of the limiting frame 13 are fixedly connected with springs 14, and the ends of the springs 14 are fixedly connected with connecting rods 15; the two connecting rods 15 are located inside the limiting frame 13 and extend to the inside of the fixed plate 7, and the inside of the fixed plate 7 is provided with movable holes that are adapted to the size of the connecting rods 15; the bottom of the connecting rod 15 is fixedly connected with a pull rod 16, and the pull rod 16 extends to the outside of the limiting frame 13, and the limiting frame 13 is provided with a movable groove that is adapted to the size of the pull rod 16, and a switch door is provided on the front of the box body 1.

[0032] The implementation principle of a sand and gravel aggregate grading and screening device in the embodiment of the present application is:

[0033] The sand and gravel aggregate grading and screening device pours sand and gravel into the interior of the box body 1 through the feed hopper 10, and the sand and gravel enter the top of the screening net 6 through the feed hopper, and the motor 2 and the cylinder 17 are started. The motor 2 drives the telescopic rod 3 to rotate, and the telescopic rod 3 drives the fixed frame 4 to rotate. At the same time, the cylinder 17 drives the fixed frame 4 to move up and down, and the fixed frame 4 drives the connecting frame 5 to rotate, and the connecting frame 5 drives the screening net 6 to rotate. When the screening net 6 rotates, the screening speed is increased, and the sand and gravel pass through the two screening nets 6 to reach the filter net 8, and the filter net 8 screens the sand and gravel again. The sand and gravel with smaller filter holes than the filter net 8 reaches the top of the connecting plate 11 and is discharged through the discharge port.

Claims

1. A sand and gravel aggregate grading and screening device, comprising a box (1) and a screening mechanism, Features: The screening mechanism is arranged inside the box (1); The screening mechanism comprises a motor (2) fixedly mounted on the top of a box body (1), the output shaft of the motor (2) being fixedly connected to a telescopic rod (3), the bottom of the telescopic rod (3) being fixedly connected to a fixing frame (4), the inner side of the fixing frame (4) being slidably connected to a connecting frame (5), the bottom of the connecting frame (5) being fixedly connected to a screening net (6), a fixing plate (7) being fixedly connected to the inner wall of the box body (1) and located below the fixing frame (4), a filtering net (8) being arranged on the inner side of the fixing plate (7), a bolt (9) being threadedly connected to the outer side of the fixing frame (4), a wave boss (17) being fixedly connected to the top of the fixing plate (7), and a concave-convex groove matching the size of the wave boss (17) being provided at the bottom of the fixing frame (4).

2. A sand and gravel aggregate grading and screening device according to claim 1, Features: A feed hopper (10) is fixedly connected to the top of the box body (1), a connecting plate (11) is fixedly connected to the inner wall of the box body (1) and located below the fixed plate (7), the connecting plate (11) is inclined, a discharge port is provided on the right side of the box body (1) and close to the connecting plate (11), and a sealing cover with a size matching the discharge port is provided on the right side of the box body (1).

3. A sand and gravel aggregate grading and screening device according to claim 1, Features: The filter holes of the screening net (6) and the filter net (8) are of different sizes. The number of the fixing frame (4) and the screening net (6) is two, and the fixing frame (4) is provided with a slide groove that is matched with the size of the connecting frame (5).

4. A sand and gravel aggregate grading and screening device according to claim 1, Features: The fixing frame (4) has a U-shaped cross section, one end of the bolt (9) extends into the interior of the connecting frame (5), and the interiors of the fixing frame (4) and the connecting frame (5) are both provided with a thread groove that matches the size of the bolt (9).

5. A sand and gravel aggregate grading and screening device according to claim 1, Features: The top of the fixed plate (7) is fixedly connected to an annular frame (12), the annular frame (12) is located outside the filter screen (8), the top of the annular frame (12) is in contact with the fixed frame (4), and the annular frame (12) is inclined.

6. A sand and gravel aggregate grading and screening device according to claim 1, Features: The outer side of the filter screen (8) is fixedly connected to a limiting frame (13), the limiting frame (13), the left and right sides of the limiting frame (13) are fixedly connected to springs (14), and the ends of the springs (14) are fixedly connected to connecting rods (15).

7. A sand and gravel aggregate grading and screening device according to claim 6, Features: The two connecting rods (15) are located inside the limiting frame (13) and extend to the inside of the fixing plate (7). The fixing plate (7) is provided with movable holes whose sizes match those of the connecting rods (15).

8. A sand and gravel aggregate grading and screening device according to claim 6, Features: The bottom of the connecting rod (15) is fixedly connected to a pull rod (16), the pull rod (16) extends to the outside of the limiting frame (13), the limiting frame (13) is provided with a movable groove that is matched to the size of the pull rod (16), and the front of the box body (1) is provided with a switch door.

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