Gravel multi-stage crushing device

Abstract

The utility model relates to the technical field of sandstone crushing, in particular to a multistage sandstone crushing device which comprises a box body and a secondary crushing mechanism, the second-stage crushing mechanism comprises a second motor arranged on the box body, a grinding roller rotationally arranged in the box body, two arc-shaped plates symmetrically distributed in the box body, and a screening assembly arranged on the arc-shaped plates; the second motor is in driving connection with the grinding roller, and the screening assembly comprises a mounting plate, a screening plate arranged on the mounting plate, two insertion blocks arranged on the screening plate and a plurality of bolts which penetrate through the box body and are in threaded connection with the mounting plate. The arc-shaped plate is provided with a sliding groove for the insertion block to slide, and the mounting plate is provided with a grip. According to the gravel crushing device, the gravel crushing effect can be further improved, the gravel particles can be screened according to the size, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel crushing technology, and in particular to a multi-stage sand and gravel crushing device. Background Technology

[0002] Sand and gravel are fundamental materials in the construction industry, used in the production of concrete, mortar, and other materials. Through crushing, natural sand, gravel, or ores can be processed into particle sizes and shapes that meet construction requirements, thereby improving the strength and stability of concrete.

[0003] Chinese Patent No. CN217069186U discloses a multi-stage crushing device for sand and gravel in construction engineering. The device includes a barrel, a shell fixedly connected to the top of the barrel, and a support frame fixedly connected to the bottom of the barrel. A first motor is fixedly installed at the center of the top of the support frame. The barrel contains a multi-stage crushing mechanism, which includes a transmission rod, a disc, and a wedge-shaped pressure block. The bottom of the transmission rod is movably connected to the bottom of the barrel via a bearing. By setting up a multi-stage crushing mechanism, driven by the first motor, this device can sequentially squeeze, crush, and cut the sand and gravel, resulting in more thorough crushing and meeting construction standards. This improves construction quality and effectively solves the problem that most existing sand and gravel crushing devices only have a single crushing process, resulting in poor crushing effect and large, unmixed sand and gravel particles that affect construction quality.

[0004] However, the above technical solution has the following shortcomings: Although the device further crushes sand and gravel by setting crushing blades, it cannot screen the final sand and gravel according to particle size, and cannot determine whether it meets the crushing requirements. At the same time, the cutting edge of the crushing blade is easily damaged and has a short service life, which reduces the practicality of the device. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a multi-stage crushing device for sand and gravel, which can not only further improve the crushing effect of sand and gravel, but also screen the particle size of sand and gravel, thereby improving the practicality of the device.

[0006] The technical solution of this utility model is a multi-stage crushing device for sand and gravel, including a housing and a secondary crushing mechanism; the secondary crushing mechanism includes a second motor mounted on the housing, a rotating roller mounted inside the housing, two arc-shaped plates symmetrically distributed inside the housing, and a screening component mounted on the arc-shaped plates; the second motor and the roller are drivenly connected, and the screening component includes a mounting plate, a screen plate mounted on the mounting plate, two inserts mounted on the screen plate, and multiple bolts penetrating the housing and threadedly connected to the mounting plate; the arc-shaped plates are provided with sliding grooves for the inserts to slide, and the mounting plate is provided with a handle.

[0007] Preferably, the housing is provided with a feeding assembly, which includes a feeding pipe on the housing, a funnel and a cylinder on the feeding pipe, and a push plate driven and connected to the cylinder. The push plate is slidably disposed inside the feeding pipe.

[0008] Preferably, a support frame is provided on the box body, and the other end of the support frame is provided on the feed pipe.

[0009] Preferably, the box body is provided with a primary crushing mechanism, which includes a first motor mounted on the box body, a driving roller and a driven roller rotatably mounted inside the box body, and a first gear and a second gear coaxially mounted on the driving roller and the driven roller, respectively; the first motor and the driving roller are drivenly connected, and the first gear and the second gear are meshed.

[0010] Preferably, the housing is provided with a detachable protective cover, and the first gear and the second gear are located inside the protective cover.

[0011] Preferably, the box is provided with a collection bucket, the collection bucket is provided with two suction pipes, and the suction pipes are provided with a first suction hood and a second suction hood.

[0012] Preferably, a base is provided at the bottom of the box.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] This invention enables multi-stage crushing of sand and gravel through a primary and secondary crushing mechanism, greatly improving the crushing effect. It also screens the sand and gravel particles to ensure that the crushed and collected sand and gravel meet the requirements for use, thereby improving the strength and stability of concrete and demonstrating good practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial cross-sectional schematic diagram of the box body of this utility model;

[0017] Figure 3 This is another partial cross-sectional view of the box body of this utility model;

[0018] Figure 4 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Reference numerals: 1. Box body; 2. Feed pipe; 3. Funnel; 4. Support frame; 5. Cylinder; 6. Push plate; 7. First motor; 8. Driven roller; 9. First gear; 10. Driven roller; 11. Second gear; 12. Second motor; 13. Roller; 14. Arc plate; 15. Screen plate; 16. Mounting plate; 17. Insert block; 18. Bolt; 19. Handle; 20. Collection bucket; 21. Dust suction pipe; 22. First dust suction hood; 23. Second dust suction hood; 24. Protective cover; 25. Base. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-4 As shown, this embodiment proposes a multi-stage crushing device for sand and gravel, including a housing 1 and a secondary crushing mechanism. The housing 1 is equipped with a primary crushing mechanism, which includes a first motor 7 mounted on the housing 1, a driving roller 8 and a driven roller 10 rotatably mounted inside the housing 1, and a first gear 9 and a second gear 11 coaxially mounted on the driving roller 8 and the driven roller 10, respectively. The first motor 7 and the driving roller 8 are drivenly connected, and the first gear 9 and the second gear 11 are meshed. The housing 1 is equipped with a detachable protective cover 24, and the first gear 9 and the second gear 11 are located inside the protective cover 24. The protective cover 24 is used to isolate and protect the first gear 9 and the second gear 11.

[0022] The secondary crushing mechanism includes a second motor 12 mounted on the housing 1, a rolling roller 13 rotatably mounted inside the housing 1, two arc-shaped plates 14 symmetrically distributed inside the housing 1, and a screening assembly mounted on the arc-shaped plates 14. The second motor 12 and the rolling roller 13 are drivenly connected. The screening assembly includes a mounting plate 16, a screen plate 15 mounted on the mounting plate 16, two inserts 17 mounted on the screen plate 15, and a plurality of bolts 18 penetrating the housing 1 and threadedly connected to the mounting plate 16. The arc-shaped plate 14 is provided with a sliding groove for the inserts 17 to slide, and the mounting plate 16 is provided with a handle 19.

[0023] In this embodiment, after the sand and gravel are transported into the interior of the housing 1, the first motor 7 and the second motor 12 are started simultaneously. The first motor 7 drives the active roller 8 and the first gear 9 to rotate. The first gear 9 and the second gear 11 mesh and drive each other, causing the active roller 8 and the driven roller 10 to rotate relative to each other. This crushes the sand and gravel falling between the active roller 8 and the driven roller 10. The sand and gravel that have undergone the initial processing will fall onto the arc plate 14 and the screen plate 15 below. The sand and gravel falling onto the arc plate 14 will roll onto the screen plate 15. The sand and gravel that meet the particle size requirements will be discharged directly from the housing 1 and collected through the screen holes of the screen plate 15, while the sand and gravel that do not meet the requirements will remain on the screen plate 15. At this time, the second motor 12 drives the crushing roller 13 to rotate, so that the crushing roller 13 and the screen plate 15 crush and grind the sand and gravel until the particle size of the sand and gravel meets the processing requirements and falls from the screen holes of the screen plate 15. Thus, by performing secondary crushing processing on the sand and gravel, the crushing effect of the sand and gravel is greatly improved, which has good practicality.

[0024] Example 2

[0025] like Figure 1 and Figure 3 As shown, the multi-stage crushing device for sand and gravel proposed in this embodiment, compared with the first embodiment, has a feeding assembly on the box 1. The feeding assembly includes a feeding pipe 2 on the box 1, a funnel 3 and a cylinder 5 on the feeding pipe 2, and a push plate 6 driven and connected to the cylinder 5. The push plate 6 is slidably disposed inside the feeding pipe 2. A support frame 4 is disposed on the box 1, and the other end of the support frame 4 is disposed on the feeding pipe 2.

[0026] In this embodiment, when feeding sand and gravel, the sand and gravel are first poured into the feed pipe 2 through the funnel 3, and then the cylinder 5 is started to drive the push plate 6 to move, pushing the sand and gravel in the feed pipe 2 into the interior of the box 1. This feeding method can control the feeding speed of sand and gravel processing and avoid excessive amount of sand and gravel in the box 1, which would affect the normal operation of the equipment.

[0027] Example 3

[0028] like Figure 2 and Figure 3 As shown in the figure, the multi-stage crushing device for sand and gravel proposed in this embodiment, compared with the first embodiment, has a collection bucket 20 on the box 1, two suction pipes 21 on the collection bucket 20, a first suction hood 22 and a second suction hood 23 on the suction pipes 21, and a base 25 at the bottom of the box 1 to support the entire device, and the sand and gravel discharged from the bottom of the box 1 will be discharged from under the base 25.

[0029] In this embodiment, the first dust suction hood 22 and the second dust suction hood 23 are located above the primary crushing mechanism and the secondary crushing mechanism, respectively, to absorb the dust generated during the crushing and processing of sand and gravel, and to transport the dust into the collection bucket 20 for centralized processing through the dust suction pipe 21.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-stage crushing device for sand and gravel, characterized in that, include: Box (1); The secondary crushing mechanism includes a second motor (12) mounted on the housing (1), a rolling roller (13) rotatably mounted inside the housing (1), two arc-shaped plates (14) symmetrically distributed inside the housing (1), and a screening assembly mounted on the arc-shaped plates (14); the second motor (12) and the rolling roller (13) are driven to connect, and the screening assembly includes a mounting plate (16), a screen plate (15) mounted on the mounting plate (16), two inserts (17) mounted on the screen plate (15), and a plurality of bolts (18) that penetrate the housing (1) and are threadedly connected to the mounting plate (16); the arc-shaped plate (14) is provided with a sliding groove for the inserts (17) to slide, and the mounting plate (16) is provided with a handle (19).

2. The multi-stage crushing device for sand and gravel according to claim 1, characterized in that, The box (1) is provided with a feeding assembly, which includes a feeding pipe (2) on the box (1), a funnel (3) and a cylinder (5) on the feeding pipe (2), and a push plate (6) driven and connected to the cylinder (5). The push plate (6) is slidably disposed inside the feeding pipe (2).

3. The multi-stage crushing device for sand and gravel according to claim 2, characterized in that, A support frame (4) is provided on the box body (1), and the other end of the support frame (4) is provided on the feed pipe (2).

4. The multi-stage crushing device for sand and gravel according to claim 1, characterized in that, The box (1) is equipped with a primary crushing mechanism. The primary crushing mechanism includes a first motor (7) mounted on the box (1), a drive roller (8) and a driven roller (10) rotatably mounted inside the box (1), and a first gear (9) and a second gear (11) coaxially mounted on the drive roller (8) and the driven roller (10), respectively. The first motor (7) and the drive roller (8) are driven and connected, and the first gear (9) and the second gear (11) are meshed and connected.

5. A multi-stage crushing device for sand and gravel according to claim 4, characterized in that, A detachable protective cover (24) is provided on the housing (1), and the first gear (9) and the second gear (11) are located inside the protective cover (24).

6. The multi-stage crushing device for sand and gravel according to claim 1, characterized in that, The box (1) is equipped with a collection bucket (20), and the collection bucket (20) is equipped with two suction pipes (21). The suction pipes (21) are equipped with a first suction hood (22) and a second suction hood (23).

7. The multi-stage crushing device for sand and gravel according to claim 1, characterized in that, The bottom of the box (1) is provided with a base (25).

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