Gravel crushing device

Abstract

The utility model relates to a crushing device, belongs to the technical field of sandstone processing, and particularly relates to a sandstone crushing device which comprises a machine body, a feeding hopper is fixedly mounted at the top of the machine body, a crushing bin is fixedly mounted on the upper portion in the machine body, a discharging pipe is fixedly mounted at the bottom of the crushing bin, and a crushing motor is fixedly mounted on the outer side wall of the machine body. Crushing blades are arranged in the crushing bin, the output end of the crushing motor and the crushing blades in the crushing bin are in meshing transmission through a bevel gear, a first screen is arranged in the middle of the interior of the machine body, a discharging plate is arranged below the first screen, a first material collecting box is movably installed on the lower portion of the interior of the machine body, and a screen plate is arranged below the discharging plate; a second screen is embedded in the screen plate, a second material receiving box is movably installed at the position, corresponding to the second material receiving box, in the machine body, and a transmission mechanism is arranged in the machine body; according to the sand screening device, the sand screening effect of the first screen and the second screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel processing, in particular to a sand and gravel crushing device. Background Art

[0002] Sand and gravel refer to a loose mixture of sand particles and crushed stone. In geology, mineral or rock particles with a particle size of 0.074 to 2 mm are called sand, and those with a particle size greater than 2 mm are called gravel or angular cobbles. If the crushed stone in the sand and gravel is mostly gravel, it is called sand and gravel. In daily life, some people also call sandstone sand and gravel. Cement and sand and gravel are the main raw materials for making concrete. Sand and gravel require a certain proportion of size when making concrete. Large-sized sand and gravel need to be crushed before use.

[0003] A search of a Chinese patent with publication number CN221063034U discloses a sand and gravel crushing device, including a base, with a sand and gravel crushing device provided at the upper end of the base, the sand and gravel crushing device including: a crushing auxiliary component, a pushing component, a controller and an operating cabin, the lower end of the operating cabin being fixedly mounted on the upper end of the base. The utility model discloses a sand and gravel crushing device, wherein when the guard plate returns, the sand and gravel accumulated at the upper end can be moved backward to allow the second scraper to scrape it off, and the pushing component works reciprocatingly, thereby avoiding the problem of the upper sand and gravel crusher stopping to wait for the pushing component to push the processing due to the component returning to its original position, thereby greatly enhancing the processing efficiency of the entire device, and the first dust removal sprinkler and the second dust removal sprinkler reduce the problem of excessive dust from falling sand and gravel by humidifying and sprinkling water in the operating cabin. The first dust removal sprinkler and the second dust removal sprinkler effectively solve the problem of excessive dust and difficulty in dust removal during the processing of the equipment by sprinkling water and humidifying.

[0004] Based on the above search and combined with the existing technology, we found that:

[0005] Although the above technology can solve the problem of large dust during the crushing process, the sand and gravel will appear in different sizes during the crushing process, and the direct use of the screen for screening has poor effect. The sand and gravel can easily clog the screen, which is inconvenient to use. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a sand and gravel crushing device, which improves the screening effect of the first screen and the second screen on sand and gravel.

[0007] The technical solution for achieving the purpose of the utility model is: a sand and gravel crushing device, including a fuselage, a feed hopper is fixedly installed on the top of the fuselage, a crushing bin is fixedly installed on the upper part of the interior of the fuselage, a discharge pipe is fixedly installed on the bottom of the crushing bin, a crushing motor is fixedly installed on the outer wall of the fuselage, crushing leaves are provided inside the crushing bin, the output end of the crushing motor and the crushing leaves inside the crushing bin are meshed and transmitted by bevel gears, a first screen is provided at the middle position inside the fuselage, a discharge plate is provided below the first screen, the discharge plate is fixedly installed inside the fuselage, a first material receiving box is movably installed at the lower part of the interior of the fuselage, a screen plate is provided below the discharge plate, a second screen is inlaid on the screen plate, a second material receiving box is movably installed at the position corresponding to the second material receiving box inside the fuselage, and a transmission mechanism is provided inside the fuselage.

[0008] In some embodiments, the transmission mechanism includes a transmission shaft, a connecting shaft, a return spring and an extrusion wheel. The transmission shaft is movably mounted on the side wall of the fuselage. One end of the transmission shaft is located inside the crushing bin and is engaged with the output shaft of the crushing motor through bevel gears. The connecting shaft is a cylindrical structure. The connecting shaft is movably mounted on the outer wall of the fuselage, and the connecting shaft passes through the inner and outer walls of the fuselage and is fixedly connected to the first screen. The return spring is sleeved on the connecting shaft. The extrusion wheel is a cylindrical structure with a protrusion, and the extrusion wheel is fixedly sleeved on the transmission shaft.

[0009] In some embodiments, the first screen is obliquely arranged inside the fuselage, the top of the blanking plate is an inclined surface, and the screen plate is inclined.

[0010] In some embodiments, a transmission box is fixedly installed on the outer wall of the fuselage at a position corresponding to the extrusion wheel, and the extrusion wheel is located inside the transmission box.

[0011] In some embodiments, a connecting mechanism is provided inside the fuselage, and the connecting mechanism includes a movable plate, a transmission rod, a first spring, an extrusion block, a partition and a second spring. The left side of the blanking plate is a hollow structure, and the movable plate is movably installed inside the blanking plate. The top of the movable plate is fixedly connected to the bottom of the first screen, and the transmission rod is movably installed inside the blanking plate. The transmission rod and the movable plate are fixedly connected. The first spring is located inside the blanking plate, and the first spring is sleeved on the transmission rod. The extrusion block is fixedly sleeved on the transmission rod, and the transmission rod passes downward through the upper and lower walls of the partition. The second spring is located on the top wall of the partition and sleeved on the lower end of the transmission rod.

[0012] In some embodiments, the transmission rod passes downward through the upper and lower walls of the second screen, and the bottom wall of the extrusion block fits against the top wall of the second screen.

[0013] Compared with the prior art, the present invention has the following significant advantages:

[0014] The utility model feeds sand and gravel into the interior of the crushing bin through the feed hopper, starts the crushing motor, and the crushing motor drives the crushing blades inside the crushing bin to crush the sand and gravel. The sand and gravel crushed in the crushing bin will fall onto the first screen and the second screen to be screened. Through the setting of the transmission mechanism, when the crushing bin is crushing sand and gravel, the transmission shaft will be driven to rotate, and then drive the extrusion wheel to rotate. Since the extrusion wheel has a protrusion, the extrusion wheel will squeeze the connecting shaft and the return spring. After the connecting shaft is squeezed, it will drive the first screen to move downward, and then the extrusion wheel leaves the connecting shaft, and the connecting shaft will move upward under the action of the return spring, and this reciprocating process allows the first screen to move up and down inside the machine body. At the same time, through the setting of the connecting mechanism, the second screen will also move up and down with the first screen, thereby improving the screening effect of the first screen and the second screen on sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main internal structure provided in one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall structure provided in one embodiment of the present invention;

[0018] Figure 3 The utility model provides in one embodiment Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 The utility model provides in one embodiment Figure 1 Enlarged view of point B in the middle.

[0020] Description of reference numerals:

[0021] 1. Machine body; 2. Feed hopper; 3. Crushing chamber; 4. Crushing motor; 5. Feeding pipe; 6. First screen; 7. Feeding plate; 8. First collecting box; 9. Screen plate; 10. Second screen; 11. Second collecting box; 12. Drive shaft; 13. Connecting shaft; 14. Return spring; 15. Extrusion wheel; 16. Transmission box; 17. Movable plate; 18. Transmission rod; 19. First spring; 20. Extrusion block; 21. Partition; 22. Second spring. DETAILED DESCRIPTION

[0022] The following is a detailed description of the present invention, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. 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.

[0023] The present invention provides a sand and gravel crushing device through improvement. The technical solution of the present invention is:

[0024] like Figure 1 and Figure 2 As shown, a sand and gravel crushing device includes a machine body 1, which is a hollow structure. A feed hopper 2 is fixedly installed on the top of the machine body 1. The feed hopper 2 is a hollow structure that gradually becomes smaller from top to bottom. The feed hopper 2 is connected to the interior of the machine body 1. A crushing bin 3 is fixedly installed on the upper part of the interior of the machine body 1. A discharge pipe 5 is fixedly installed on the bottom of the crushing bin 3. The discharge pipe 5 is a circular pipe. A crushing motor 4 is fixedly installed on the outer wall of the machine body 1. Crushing blades are provided inside the crushing bin 3. The output end of the crushing motor 4 is connected to the inside of the crushing bin 3. The crushing blades are driven by bevel gear meshing, and the sand and gravel are fed into the crushing bin 3 through the feed hopper 2. The crushing motor 4 is started, and the crushing motor 4 drives the crushing blades inside the crushing bin 3 to crush the sand and gravel. A first screen 6 is provided in the middle position inside the fuselage 1. The first screen 6 is obliquely provided inside the fuselage 1. A blanking plate 7 is provided below the first screen 6. The blanking plate 7 is an "L"-shaped plate. The blanking plate 7 is fixedly installed inside the fuselage 1, and the top of the blanking plate 7 is an inclined surface. The inner lower part of the fuselage 1 is movably arranged. A first receiving box 8 is provided, which is a hollow rectangular structure. The sand and gravel crushed by the crushing bin 3 will fall onto the first screen 6. After screening by the first screen 6, the fine sand and gravel will fall onto the discharge plate 7, and then pass through the inclined surface of the discharge plate 7 to fall into the interior of the first receiving box 8 to be collected. A screen plate 9 is provided below the discharge plate 7. The screen plate 9 is a rectangular plate. The screen plate 9 is tilted. A second screen 10 is inlaid on the screen plate 9. One end of the second screen 10 is fixedly connected to the inner wall of the fuselage 1. The interior of the machine body 1 is movably provided with a second material receiving box 11 at a position corresponding to the second material receiving box 11. The second material receiving box 11 is a hollow rectangular structure. When the first screen 6 screens the sand and gravel, some of the sand and gravel cannot be completely screened and will fall onto the second screen 10 for further screening. After screening, the sand and gravel will directly fall into the interior of the first material receiving box 8, while the larger sand and gravel will fall into the interior of the second screen 10 along the inclined surface of the screen plate 9, thereby screening the crushed sand and gravel. A transmission mechanism is provided inside the machine body 1.

[0025] like Figure 1 and Figure 3As shown, the transmission mechanism includes a transmission shaft 12, a connecting shaft 13, a return spring 14 and an extrusion wheel 15. The transmission shaft 12 is a cylindrical rod. The transmission shaft 12 is movably mounted on the side wall of the fuselage 1. One end of the transmission shaft 12 is located inside the crushing bin 3 and is engaged with the output shaft of the crushing motor 4 through bevel gears. The connecting shaft 13 is a cylindrical structure. The connecting shaft 13 is movably mounted on the outer wall of the fuselage 1, and the connecting shaft 13 passes through the inner and outer side walls of the fuselage 1 and is fixedly connected to the first screen 6. The return spring 14 is sleeved on the connecting shaft 13. The extrusion wheel 15 is a cylindrical structure with a protrusion. 15 is fixedly sleeved on the transmission shaft 12. Through the setting of the transmission mechanism, when the crushing bin 3 is crushing sand and gravel, the transmission shaft 12 will be driven to rotate, thereby driving the extrusion wheel 15 to rotate. Since the extrusion wheel 15 has a protrusion, the extrusion wheel 15 will squeeze the connecting shaft 13 and the return spring 14. After the connecting shaft 13 is squeezed, it will drive the first screen 6 to move downward. Then, the extrusion wheel 15 leaves the connecting shaft 13, and the connecting shaft 13 will move upward under the action of the return spring 14. In this reciprocating manner, the first screen 6 can move up and down inside the fuselage 1, thereby improving the screening effect of sand and gravel;

[0026] A transmission box 16 is fixedly installed on the outer wall of the fuselage 1 at the position corresponding to the extrusion wheel 15. The transmission box 16 is a hollow rectangular structure. The extrusion wheel 15 is located inside the transmission box 16. The transmission box 16 can protect the rotation of the extrusion wheel 15 to prevent the extrusion wheel 15 from rotating and injuring people.

[0027] like Figure 1 and Figure 4As shown, in one embodiment, a connecting mechanism is provided inside the fuselage 1, and the connecting mechanism includes a movable plate 17, a transmission rod 18, a first spring 19, an extrusion block 20, a partition 21 and a second spring 22. The movable plate 17 is a rectangular plate, and the left side of the blanking plate 7 is a hollow structure. The movable plate 17 is movably installed inside the blanking plate 7, and the top of the movable plate 17 is fixedly connected to the bottom of the first screen 6. The transmission rod 18 is a cylindrical rod, and the transmission rod 18 is movably installed inside the blanking plate 7. The transmission rod 18 and the movable plate 17 are fixedly connected. The transmission rod 18 passes downward through the upper and lower walls of the second screen 10. The first spring 19 is located inside the blanking plate 7, and the first spring 19 is sleeved on the transmission rod 18. The extrusion block 20 is rectangular The block of the structure, the extrusion block 20 is fixedly sleeved on the transmission rod 18, the bottom wall of the extrusion block 20 is fitted with the top wall of the second screen 10, the partition 21 is a plate of a rectangular structure, the transmission rod 18 penetrates the upper and lower walls of the partition 21 downward, the second spring 22 is located at the top wall of the partition 21 and is sleeved on the lower end of the transmission rod 18, through the setting of the connecting mechanism, when the first screen 6 moves up and down inside the fuselage 1, the movable plate 17 will also move with the first screen 6, and the movable plate 17 will drive the transmission rod 18 to move, and when the transmission rod 18 moves downward, it will squeeze the second screen 10 through the extrusion block 20, so that the second screen 10 will also move up and down with the first screen 6, thereby improving the screening effect of the second screen 10 on sand and gravel.

[0028] The specific working methods are:

[0029] The crushing motor 4 is started, and the crushing motor 4 drives the crushing blades inside the crushing bin 3 to crush the sand and gravel. The sand and gravel crushed by the crushing bin 3 will fall onto the first screen 6 and the second screen 10 to be screened. Through the setting of the transmission mechanism, when the crushing bin 3 is crushing the sand and gravel, the transmission shaft 12 will be driven to rotate, thereby driving the extrusion wheel 15 to rotate. Since the extrusion wheel 15 has a protrusion, the extrusion wheel 15 will squeeze the connecting shaft 13 and the return spring 14. After the connecting shaft 13 is squeezed, it will drive the first screen 6 to move downward, and then the extrusion wheel 15 leaves the connecting shaft 13, and the connecting shaft 13 will move upward under the action of the return spring 14, and this reciprocating process allows the first screen 6 to move up and down inside the fuselage 1. At the same time, through the setting of the connecting mechanism, the second screen 10 will also move up and down with the first screen 6, thereby improving the screening effect of the first screen 6 and the second screen 10 on sand and gravel.

[0030] The technical means disclosed in the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A sand and gravel crushing device, comprising a body (1), a feed hopper (2) fixedly mounted on the top of the body (1), characterized in that: A crushing bin (3) is fixedly installed on the upper part of the interior of the machine body (1), a discharge pipe (5) is fixedly installed on the bottom of the crushing bin (3), a crushing motor (4) is fixedly installed on the outer wall of the machine body (1), crushing leaves are arranged inside the crushing bin (3), and the output end of the crushing motor (4) and the crushing leaves inside the crushing bin (3) are meshed and driven by bevel gears. A first screen (6) is arranged at the middle position inside the machine body (1), a discharge plate (7) is arranged below the first screen (6), and the discharge plate (7) is fixedly installed inside the machine body (1). A first material receiving box (8) is movably installed below the interior of the machine body (1), a screen plate (9) is arranged below the discharge plate (7), and a second screen (10) is embedded on the screen plate (9). A second material receiving box (11) is movably installed inside the machine body (1) at a position corresponding to the second material receiving box (11), and a transmission mechanism is arranged inside the machine body (1).

2. A sand and gravel crushing device according to claim 1, characterized in that: The transmission mechanism comprises a transmission shaft (12), a connecting shaft (13), a return spring (14) and an extrusion wheel (15). The transmission shaft (12) is movably mounted on the side wall of the machine body (1). One end of the transmission shaft (12) is located inside the crushing bin (3) and is meshed with the output shaft of the crushing motor (4) through bevel gears for transmission. The connecting shaft (13) is a cylindrical structure. The connecting shaft (13) is movably mounted on the outer wall of the machine body (1). The connecting shaft (13) passes through the inner and outer walls of the machine body (1) and is fixedly connected to the first screen (6). The return spring (14) is sleeved on the connecting shaft (13). The extrusion wheel (15) is a cylindrical structure with a protrusion. The extrusion wheel (15) is fixedly sleeved on the transmission shaft (12).

3. The sand and gravel crushing device according to claim 1, characterized in that: The first screen (6) is obliquely arranged inside the fuselage (1), the top of the blanking plate (7) is an inclined surface, and the screen plate (9) is tilted.

4. The sand and gravel crushing device according to claim 1, characterized in that: A transmission box (16) is fixedly mounted on the outer wall of the machine body (1) at a position corresponding to the extrusion wheel (15), and the extrusion wheel (15) is located inside the transmission box (16).

5. The sand and gravel crushing device according to claim 1, characterized in that: The interior of the body (1) is provided with a connecting mechanism, which includes a movable plate (17), a transmission rod (18), a first spring (19), an extrusion block (20), a partition (21) and a second spring (22). The left side of the blanking plate (7) is a hollow structure. The movable plate (17) is movably installed inside the blanking plate (7). The top of the movable plate (17) is fixedly connected to the bottom of the first screen (6). The transmission rod (18) is movably installed inside the blanking plate (7). The transmission rod (18) and the movable plate (17) are fixedly connected. The first spring (19) is located inside the blanking plate (7) and the first spring (19) is sleeved on the transmission rod (18). The extrusion block (20) is fixedly sleeved on the transmission rod (18). The transmission rod (18) passes through the upper and lower walls of the partition (21) downward. The second spring (22) is located on the top wall of the partition (21) and sleeved on the lower end of the transmission rod (18).

6. A sand and gravel crushing device according to claim 5, characterized in that: The transmission rod (18) passes through the upper and lower walls of the second screen (10) downwardly, and the bottom wall of the extrusion block (20) is in contact with the top wall of the second screen (10).

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