Grading machine

Abstract

The utility model relates to the technical field of screening equipment, in particular to a grading machine which comprises a blanking box, a conveying cylinder is rotationally connected to the blanking box, a first mesh cylinder, a second mesh cylinder, a third mesh cylinder and a fourth mesh cylinder are sequentially arranged on the conveying cylinder from back to front, a spiral inner spiral ring is fixedly installed on the inner wall of the conveying cylinder, and a plurality of spiral grooves are formed in the inner wall of the conveying cylinder. The two ends of the inner spiral ring extend to the ends of the first mesh cylinder and the fourth mesh cylinder correspondingly, an end ring is fixedly installed on the rear end face of the conveying cylinder, a supporting cylinder is fixedly installed at the center of the rear side face of the end ring, a driven gear is fixedly installed on the supporting cylinder, and a driving motor is arranged on one side of the supporting cylinder. The driving motor is fixedly installed on an external frame body, a driving gear is arranged at the tail end of an output shaft of the driving motor, the driving gear and the driven gear are meshed with each other, and a feeding pipe is arranged in the supporting cylinder. The multi-stage screening device facilitates multi-stage screening operation and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a grading machine. Background Art

[0002] A grading machine is a machine used to screen stones or ores. It is mainly used in mining, construction, roads, bridges, railways and other industries. It can classify raw stones according to different particle sizes to ensure uniform product specifications and stable quality.

[0003] The working principle of a grading machine is to use an electric motor to drive the screen tube to rotate, and then screen through sieve holes of different sizes to separate larger aggregates from fine sand, easily achieving precise sorting. There are many types of grading machines on the market, but most grading machines use a single mesh cylinder for screening operations due to the need to ensure unloading. The aperture of the through-holes at each part of the single mesh cylinder is consistent. Each screening operation can only screen large and small particles, and more refined screening operations cannot be performed, which affects the screening effect and limits its screening range, causing inconvenience to the user. In view of this, we have proposed a grading machine. Utility Model Content

[0004] The purpose of the present invention is to provide a grading machine to solve the defects mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A grading machine comprises a blanking box, which is rotatably connected to a conveying cylinder, and the conveying cylinder is provided with a first mesh cylinder, a second mesh cylinder, a third mesh cylinder and a fourth mesh cylinder in sequence from back to front, and a spiral inner spiral ring is fixedly mounted on the inner wall of the conveying cylinder, and the two ends of the inner spiral ring extend to the ends of the first mesh cylinder and the fourth mesh cylinder respectively, and an end ring is fixedly mounted on the rear end surface of the conveying cylinder, and a support cylinder is fixedly mounted at the center position of the rear side surface of the end ring, and a driven gear is fixedly mounted on the support cylinder, and a driving motor is provided on one side of the support cylinder, and the driving motor is fixedly mounted on an external frame, and a driving gear is provided at the end of the output shaft of the driving motor, and the driving gear and the driven gear are meshed with each other, and a feeding pipe is provided in the support cylinder.

[0007] Preferably, the support tube is a hollow cylindrical structure, and the support tube is sleeved on the feed tube and is rotatably connected to the support tube.

[0008] Preferably, a fixed disk is fixedly mounted on the end of the output shaft of the driving motor, and the driving gear is fixedly mounted on the front side of the fixed disk.

[0009] Preferably, the blanking box is provided with a plurality of semicircular holes arranged linearly and equidistantly, and the conveying cylinder is placed on the semicircular holes.

[0010] Preferably, a plurality of blanking chambers arranged linearly and equidistantly are provided in the blanking box, and the blanking chambers are located below the corresponding mesh cylinders.

[0011] Preferably, a plurality of bottom partitions arranged linearly and equidistantly are fixedly mounted on the bottom of the blanking box, and a conveyor belt is provided between two adjacent bottom partitions, and the conveyor belt is located directly below the corresponding blanking chamber.

[0012] Preferably, a plurality of support legs arranged in a matrix are fixedly mounted on the bottom surface of the blanking box, and the height of the support legs is greater than 50 cm.

[0013] Preferably, the apertures of the through holes in the first mesh tube, the second mesh tube, the third mesh tube and the fourth mesh tube increase in sequence.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with a conveying cylinder, and a first mesh cylinder, a second mesh cylinder, a third mesh cylinder and a fourth mesh cylinder are provided on the conveying cylinder, so that a four-stage screening operation can be realized. Moreover, a conveyor belt is provided at the bottom, which can be used to transport the screened stones, thereby facilitating multi-stage screening and ensuring a finer screening effect.

[0016] 2. The utility model provides a driven gear and a driving gear that mesh with each other, and cooperates with the feed pipe to pass through the support cylinder for feeding, which makes feeding more convenient and does not hinder the normal rotation of the conveying cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is one of the partial structural diagrams of the utility model;

[0019] Figure 3 This is the second schematic diagram of the partial structure of the utility model;

[0020] Figure 4 This is the third schematic diagram of the partial structure of the utility model;

[0021] The meaning of each number in the figure is:

[0022] 1. Blanking box; 10. Semicircular hole; 11. Blanking chamber; 12. Bottom partition; 13. Conveyor belt; 14. Support legs;

[0023] 2. Conveying cylinder; 20. First mesh cylinder; 21. Second mesh cylinder; 22. Third mesh cylinder; 23. Fourth mesh cylinder; 24. Inner spiral ring; 25. End ring; 26. Support cylinder; 261. Driven gear; 27. Driving motor; 271. Fixed disk; 28. Driving gear; 29. ​​Feed pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 4 The utility model provides a technical solution: a grading machine, including a blanking box 1, a conveying drum 2 is rotatably connected to the blanking box 1, and a first mesh drum 20, a second mesh drum 21, a third mesh drum 22 and a fourth mesh drum 23 are sequentially arranged on the conveying drum 2 from the back to the front. The apertures of the through holes in the first mesh drum 20, the second mesh drum 21, the third mesh drum 22 and the fourth mesh drum 23 increase in sequence, so that the screening operation is carried out in sequence from the back to the front, thereby achieving a multi-stage screening effect;

[0026] Specifically, a spiral inner spiral ring 24 is fixedly installed on the inner wall of the conveying cylinder 2. When the inner spiral ring 24 rotates with the conveying cylinder 2, it can push the material forward, so that the material passes through the first mesh cylinder 20, the second mesh cylinder 21, the third mesh cylinder 22 and the fourth mesh cylinder 23 for screening operation more smoothly;

[0027] Specifically, the two ends of the inner spiral ring 24 extend to the ends of the first mesh tube 20 and the fourth mesh tube 23 respectively. An end ring 25 is fixedly installed on the rear end face of the conveying tube 2, and a support tube 26 is fixedly installed at the center position of the rear side face of the end ring 25. A driven gear 261 is fixedly installed on the support tube 26. A driving motor 27 is provided on one side of the support tube 26. The driving motor 27 is fixedly installed on the external frame. A driving gear 28 is provided at the end of the output shaft of the driving motor 27. The driving gear 28 and the driven gear 261 are engaged with each other. A feeding pipe 29 is provided in the support tube 26 to ensure that when in use, the driving motor 27 can be used to drive the conveying tube 2 to rotate for screening operations.

[0028] In this embodiment, the support tube 26 is a hollow cylindrical structure. The support tube 26 is sleeved on the feed tube 29 and is rotatably connected to the support tube 26 so that the feed tube 29 will not block the normal rotation of the support tube 26.

[0029] Specifically, a fixing plate 271 is fixedly mounted on the end of the output shaft of the driving motor 27 , and the driving gear 28 is fixedly mounted on the front side of the fixing plate 271 by a plurality of fastening bolts, so as to facilitate the fixing and mounting operation.

[0030] Furthermore, the blanking box 1 is provided with a plurality of semicircular holes 10 arranged linearly and at equal intervals, and the conveying cylinder 2 is placed on the semicircular holes 10 to support the conveying cylinder 2.

[0031] In addition, a plurality of blanking chambers 11 arranged linearly and evenly spaced are provided in the blanking box 1, and the blanking chambers 11 are located below the corresponding mesh cylinders; a plurality of bottom partitions 12 arranged linearly and evenly spaced are fixedly installed at the bottom of the blanking box 1, and a conveyor belt 13 is provided between two adjacent bottom partitions 12, and the conveyor belt 13 is located directly below the corresponding blanking chamber 11, so that the stones falling from the first mesh cylinder 20, the second mesh cylinder 21, the third mesh cylinder 22 and the fourth mesh cylinder 23 can fall onto the corresponding conveyor belt 13 and be transported.

[0032] It is worth noting that a plurality of support legs 14 arranged in a matrix are fixedly mounted on the bottom surface of the blanking box 1 , and the height of the support legs 14 is greater than 50 cm, so that a stable supporting operation can be achieved by using the support legs 14 .

[0033] It is worth noting that the end of the feed pipe 29 can be fed by a screw feeder, which makes the feeding smoother and does not affect the normal horizontal arrangement of the feed pipe 29. The end of the feed pipe 29 extends into the conveying cylinder 2, making the feeding smoother.

[0034] When the grading machine of the present invention is in use, after the raw material enters the conveying cylinder 2 from the end of the feed pipe 29, the drive motor 27 is connected to the external power supply and is made to work. When the drive motor 27 works, the output shaft thereon rotates to drive the driving gear 28 to rotate. The driving gear 28 rotates, driving the driven gear 261 meshed with it to rotate. The driven gear 261 rotates to drive the support cylinder 26, the conveying cylinder 2 and the inner spiral ring 24 to rotate. When the inner spiral ring 24 rotates, the material in the conveying cylinder 2 is pushed forward. When the conveying cylinder 2 rotates, it drives the first mesh cylinder 20, the second mesh cylinder 21, the third mesh cylinder 22 and the fourth mesh cylinder 23 to rotate, so that the stone passes through the first mesh cylinder 20, the second mesh cylinder 21, the third mesh cylinder 22 and the fourth mesh cylinder 23 for screening operation. The screened stone can fall along the corresponding blanking chamber 11 to the conveyor belt 13 and be transported outward.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A grading machine, characterized in that: The invention comprises a blanking box (1), wherein the blanking box (1) is rotatably connected to a conveying cylinder (2), wherein the conveying cylinder (2) is provided with a first mesh cylinder (20), a second mesh cylinder (21), a third mesh cylinder (22) and a fourth mesh cylinder (23) in sequence from the back to the front, and an inner spiral ring (24) in a spiral shape is fixedly installed on the inner wall of the conveying cylinder (2), and the two ends of the inner spiral ring (24) extend to the ends of the first mesh cylinder (20) and the fourth mesh cylinder (23) respectively, and an end ring is fixedly installed on the rear end face of the conveying cylinder (2). (25), a support cylinder (26) is fixedly installed at the center position of the rear side surface of the end ring (25), a driven gear (261) is fixedly installed on the support cylinder (26), a driving motor (27) is provided on one side of the support cylinder (26), the driving motor (27) is fixedly installed on the external frame, a driving gear (28) is provided at the end of the output shaft of the driving motor (27), the driving gear (28) and the driven gear (261) are meshed with each other, and a feeding pipe (29) is provided in the support cylinder (26).

2. The grading machine according to claim 1, characterized in that: The support tube (26) is a hollow cylindrical structure. The support tube (26) is sleeved on the feed tube (29) and is rotatably connected to the support tube (26).

3. The grading machine according to claim 1, characterized in that: A fixed disk (271) is fixedly mounted on the end of the output shaft of the driving motor (27), and the driving gear (28) is fixedly mounted on the front side of the fixed disk (271).

4. The grading machine according to claim 1, characterized in that: The blanking box (1) is provided with a plurality of semicircular holes (10) arranged linearly and at equal intervals, and the conveying cylinder (2) rests on the semicircular holes (10).

5. The grading machine according to claim 1, characterized in that: The blanking box (1) is provided with a plurality of blanking chambers (11) arranged linearly and at equal intervals, and the blanking chambers (11) are located below the corresponding mesh cylinders.

6. The grading machine according to claim 5, characterized in that: A plurality of bottom partitions (12) arranged linearly and equidistantly are fixedly mounted on the bottom of the blanking box (1), and a conveyor belt (13) is provided between two adjacent bottom partitions (12), and the conveyor belt (13) is located directly below the corresponding blanking chamber (11).

7. The grading machine according to claim 1, characterized in that: A plurality of support legs (14) arranged in a matrix are fixedly mounted on the bottom surface of the blanking box (1), and the height of the support legs (14) is greater than 50 cm.

8. The grading machine according to claim 1, characterized in that: The apertures of the through holes in the first mesh tube (20), the second mesh tube (21), the third mesh tube (22) and the fourth mesh tube (23) increase in sequence.

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