Stone crushing and screening device

Abstract

The utility model discloses a stone crushing and screening device, which relates to the technical field of screening devices and comprises a base, a supporting plate arranged at the upper end of the base, a supporting ring obliquely arranged at the upper end of the supporting plate, a feeding box arranged at the upper end of the supporting ring, two mutually symmetrical crushing rollers arranged in the feeding box, and a second motor arranged on the outer side of the feeding box. A second motor drives the two crushing rollers to synchronously rotate in different directions, the outer side of the discharging end of the supporting ring is sleeved with a screen pipe, a first motor for driving the screen pipe to rotate is arranged on the side face of the supporting plate, a plurality of evenly-distributed screen holes are formed in the side wall of the periphery of the screen pipe, the screen holes are sequentially and equally distributed in a partitioned mode in the axis direction of the screen pipe, and the hole diameters are gradually increased; according to the utility model, through the rotation of the sieve tube which is obliquely arranged downwards and the screening of the sieve pores which are equivalently distributed in different areas and have gradually increased pore diameters, crushed stones are uniformly and effectively screened in a distinguished manner, so that the phenomenon of non-uniform screening caused by accumulation during screening is avoided.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, specifically a stone crushing and screening device. Background Technology

[0002] Stone is widely used in the concrete construction industry in the form of crushed stone and sand. Stone is also widely used in the road construction industry as filler and mixing material.

[0003] The existing stone is crushed and then screened by a vibrating screen. However, the stone is piled up together, and some stone is not screened out during the screening process, resulting in uneven screening.

[0004] To address the above problems, this utility model provides a stone crushing and screening device. Utility Model Content

[0005] The purpose of this utility model is to provide a stone crushing and screening device, which uses a downwardly inclined screen tube to rotate and screens with equally distributed screen holes of gradually increasing size to screen the crushed stone evenly and effectively, avoiding the phenomenon of uneven screening caused by accumulation during screening, thereby solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stone crushing and screening device, comprising a base, a support plate at the upper end of the base, a support ring at the upper end of the support plate, a feed box at the upper end of the support ring, two symmetrical crushing rollers inside the feed box, a second motor outside the feed box, the second motor driving the two crushing rollers to rotate synchronously in opposite directions, a screen tube sleeved on the outer side of the discharge end of the support ring, a first motor driving the screen tube to rotate on the side of the support plate, and a plurality of uniformly distributed screen holes opened in the inner sidewall of the outer periphery of the screen tube, the screen holes being distributed in equal amounts in sections along the axial direction of the screen tube and the hole diameter gradually increasing.

[0007] Furthermore, the bottom end of the support plate is fixed to the middle of the upper end of the base, the upper end of the support plate is fixed to the outer side of the lower end of the support ring, and the bottom end of the feed box is fixedly connected to the outer side of the upper end of the support ring.

[0008] Furthermore, the inner side of the feed end of the screen tube is rotatably connected to the outer side of the discharge end of the support ring via a bearing.

[0009] Furthermore, a toothed ring is fixedly provided on the outer side of the feed end of the screen tube, and an installation plate is fixedly provided on the side of the support plate at an incline. The first motor is fixedly installed on the inclined surface of the installation plate, and a first gear is fixedly installed on the output end of the first motor. The first gear meshes with the toothed ring.

[0010] Furthermore, the same side end of the crushing roller extends to the outside of the feed box and is fixedly installed with a second gear. The two second gears mesh with each other. The outer side of the same side end of the crushing roller away from the second gear is rotatably connected to the side wall of the feed box through bearings. The second motor is fixedly installed on the outside of the feed box and its output end is fixedly connected to the end of the nearby crushing roller.

[0011] Furthermore, bolts are threaded onto both ends of the base.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model provides a stone crushing and screening device. When a second motor is started, it drives two crushing rollers to rotate synchronously in opposite directions. Simultaneously, a first motor is started, driving a screen tube to rotate relative to a support ring. Stone is fed into the feed box, where the crushing rollers crush the stone. The crushed stone enters the support ring through the bottom of the feed box and then flows downwards towards the feed end of the screen tube. The stone in the feed end of the screen tube flows evenly towards the bottom as the screen tube rotates. During this flow, stones of the appropriate size are sequentially discharged from the corresponding screen openings, ultimately achieving effective screening. The purpose of this design is to uniformly and effectively differentiate and screen the crushed stone by using a downwardly tilted screen tube and screens with equally distributed, gradually increasing apertures, avoiding uneven screening caused by accumulation during the screening process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the side structure of the support plate in this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the feed box in this utility model;

[0017] Figure 4 This is a schematic diagram of the sieve tube structure in this utility model.

[0018] In the diagram: 1. Base; 2. Support plate; 3. Support ring; 4. Screen tube; 5. Screen hole; 6. Gear ring; 7. First gear; 8. First motor; 9. Mounting plate; 10. Feed box; 11. Crushing roller; 12. Second gear; 13. Second motor; 14. Bolt. Detailed Implementation

[0019] 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.

[0020] To solve the problem of how to effectively screen technologies, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0021] A stone crushing and screening device includes a base 1, a support plate 2 on the upper end of the base 1, a support ring 3 inclinedly on the upper end of the support plate 2, a feed box 10 on the upper end of the support ring 3, two symmetrical crushing rollers 11 inside the feed box 10, a second motor 13 on the outside of the feed box 10, the second motor 13 drives the two crushing rollers 11 to rotate synchronously in opposite directions, a screen tube 4 is sleeved on the outside of the discharge end of the support ring 3, a first motor 8 is provided on the side of the support plate 2 to drive the screen tube 4 to rotate, and a number of evenly distributed screen holes 5 are opened in the inner side wall of the outer periphery of the screen tube 4, the screen holes 5 are distributed in equal amounts in sections along the axial direction of the screen tube 4 and the hole diameter gradually increases.

[0022] Specifically, the second motor 13 is started, driving the two crushing rollers 11 to rotate synchronously in opposite directions. Simultaneously, the first motor 8 is started, driving the screen tube 4 to rotate relative to the support ring 3, feeding the stone into the feed box 10. The crushing rollers 11 crush the stone, and the crushed stone enters the support ring 3 through the bottom of the feed box 10, then flows downwards towards the feed end of the screen tube 4. The stone in the feed end of the screen tube 4 flows evenly towards the bottom under the rotation of the screen tube 4. During the flow, stones of the correct size are discharged outwards from the corresponding size of the screen holes 5, ultimately achieving effective screening. The purpose of this design is to uniformly and effectively distinguish and screen the crushed stone by rotating the downward-sloping screen tube 4 and screening with equally distributed screen holes 5 with gradually increasing apertures, avoiding the phenomenon of uneven screening caused by accumulation during screening.

[0023] Furthermore, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0024] The bottom end of the support plate 2 is fixed to the middle of the upper end of the base 1, and the upper end of the support plate 2 is fixed to the outer side of the lower end of the support ring 3. The bottom end of the feed box 10 is fixedly connected to the outer side of the upper end of the support ring 3. The purpose of this design is to support and fix the support ring 3 and the feed box 10, while ensuring that the crushed stone flows into the support ring 3 through the bottom end of the feed box 10.

[0025] Furthermore, such as Figure 1 and Figure 4 As shown, the following preferred technical solutions are provided:

[0026] The inner side of the feed end of the screen tube 4 is rotatably connected to the outer side of the discharge end of the support ring 3 via a bearing. The purpose of this design is to ensure that the screen tube 4 can rotate relative to the support ring 3.

[0027] Furthermore, such as Figure 1 and Figure 2 As shown, the following preferred technical solutions are provided:

[0028] A toothed ring 6 is fixedly installed on the outer side of the feed end of the screen tube 4, and an mounting plate 9 is fixedly installed on the side of the support plate 2 at an angle. The first motor 8 is fixedly installed on the inclined surface of the mounting plate 9, and a first gear 7 is fixedly installed on the output end of the first motor 8. The first gear 7 meshes with the toothed ring 6. The purpose of this design is that the first motor 8 drives the first gear 7 to rotate, and through meshing with the toothed ring 6, drives the screen tube 4 to rotate relative to the support ring 3.

[0029] Furthermore, such as Figure 1-4 As shown, the following preferred technical solutions are provided:

[0030] The crushing roller 11 extends to the outside of the feed box 10 on the same side and is fixedly installed with a second gear 12. The two second gears 12 mesh with each other. The outer side of the crushing roller 11 opposite to the second gear 12 is rotatably connected to the side wall of the feed box 10 through bearings. The second motor 13 is fixedly installed on the outside of the feed box 10 and its output end is fixedly connected to the end of the crushing roller 11 that is close to it. The purpose of this design is that the second motor 13 drives the two crushing rollers 11 to rotate synchronously in opposite directions to crush the stone.

[0031] Furthermore, such as Figure 1 As shown, the following preferred technical solutions are provided:

[0032] Both ends of the base 1 are internally threaded with bolts 14. The purpose of this design is to fix the base 1 on the support surface with bolts 14 to support the whole.

[0033] In summary: The second motor 13 is activated, driving the two crushing rollers 11 to rotate synchronously in opposite directions. Simultaneously, the first motor 8 is activated, driving the screen tube 4 to rotate relative to the support ring 3. This feeds the stone into the feed box 10, where the crushing rollers 11 crush the stone. The crushed stone enters the support ring 3 through the bottom of the feed box 10 and then flows downwards towards the feed end of the screen tube 4. The stone in the feed end of the screen tube 4 flows evenly towards the bottom as the screen tube 4 rotates. During this flow, stones of the appropriate size are sequentially discharged from the corresponding sized screen holes 5, ultimately achieving effective screening. The purpose of this design is to uniformly and effectively separate the crushed stone by rotating the downward-sloping screen tube 4 and using screen holes 5 that are evenly distributed in sections with gradually increasing apertures, thus avoiding uneven screening caused by accumulation during screening.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 stone crushing and screening device, characterized in that: The device includes a base (1), a support plate (2) is provided on the upper end of the base (1), a support ring (3) is provided on the upper end of the support plate (2) at an inclination, a feed box (10) is provided on the upper end of the support ring (3), two symmetrical crushing rollers (11) are provided in the feed box (10), a second motor (13) is provided on the outside of the feed box (10), the second motor (13) drives the two crushing rollers (11) to rotate synchronously in opposite directions, a screen tube (4) is sleeved on the outside of the discharge end of the support ring (3), a first motor (8) is provided on the side of the support plate (2) to drive the screen tube (4) to rotate, and a number of evenly distributed screen holes (5) are opened in the inner side wall of the outer periphery of the screen tube (4), the screen holes (5) are distributed in equal amounts in sections along the axial direction of the screen tube (4) and the hole diameter gradually increases.

2. The stone crushing and screening device according to claim 1, characterized in that: The bottom end of the support plate (2) is fixed to the middle of the upper end of the base (1), and the upper end of the support plate (2) is fixed to the outer side of the lower end of the support ring (3). The bottom end of the feed box (10) is fixedly connected to the outer side of the upper end of the support ring (3).

3. The stone crushing and screening device according to claim 1, characterized in that: The inner side of the feed end of the screen tube (4) is rotatably connected to the outer side of the discharge end of the support ring (3) via a bearing.

4. The stone crushing and screening device according to claim 1, characterized in that: A toothed ring (6) is fixedly provided on the outer side of the feed end of the screen tube (4), and an mounting plate (9) is fixedly provided on the side of the support plate (2) at an inclination. The first motor (8) is fixedly installed on the inclined surface of the mounting plate (9), and a first gear (7) is fixedly installed on the output end of the first motor (8). The first gear (7) meshes with the toothed ring (6).

5. The stone crushing and screening device according to claim 1, characterized in that: The crushing roller (11) extends to the outside of the feed box (10) on the same side and is fixedly installed with a second gear (12). The two second gears (12) mesh with each other. The outer side of the crushing roller (11) away from the second gear (12) is rotatably connected to the side wall of the feed box (10) through bearings. The second motor (13) is fixedly installed on the outside of the feed box (10) and its output end is fixedly connected to the end of the crushing roller (11) that is close to it.

6. The stone crushing and screening device according to claim 1, characterized in that: Both ends of the base (1) are internally threaded with bolts (14).

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