Gravel screening and crushing device

Abstract

The utility model discloses a gravel screening and crushing device which comprises a crushing box, a screen is clamped in the crushing box, a fixing frame is fixedly installed on the back face of the crushing box, an electric telescopic rod is fixedly installed on the inner wall of the fixing frame, a push plate is fixedly installed at the telescopic end of the electric telescopic rod, and the bottom face of the push plate makes contact with the upper surface of the screen. A counterweight door is movably hinged to the inner wall of the smashing box, a collecting frame is fixedly installed on the front face of the smashing box, the bottom face of the collecting frame fixedly communicates with a conveying hopper, a conveying box is arranged on the outer side of the collecting frame, the end, away from the collecting frame, of the conveying hopper penetrates through the conveying box and extends into the conveying box, and an auger conveyor is rotationally connected to the inner bottom wall of the conveying box. According to the gravel crushing device, large gravels can be conveyed through rotation of the auger conveyor, so that after the gravels are crushed, the screened gravels can be conveyed into the crushing box again for secondary crushing, the labor intensity of workers is reduced, and meanwhile, the working efficiency is improved.

Description

Technical Field

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

[0002] Sand and gravel are the main building materials for concrete structures. Sand and gravel refers to a loose mixture of sand particles and crushed stone. The different contents of sand and crushed stone in sand and gravel will affect the use effect of sand and gravel, so crushing and screening are required during use.

[0003] The utility model with the existing authorization announcement number CN212732361U discloses a sand and stone screening device for construction, comprising a crushing box, a screening box is fixed at the bottom of the crushing box, the crushing box and the screening box are connected through a through hole, a crushing assembly is arranged in the crushing box, a screening assembly is arranged in the screening box, and a collecting assembly is also arranged outside the crushing box, the crushing assembly comprises a baffle movably connected to the crushing box, a crushing chamber is arranged between the baffle and the crushing box, the crushing chamber is connected with a sand inlet outside the crushing box, a driving shaft is rotatably connected in the crushing chamber, a crushing rod is fixed on the driving shaft, an external thread is arranged at one end of the driving shaft, the external thread is threadedly connected with the baffle, a first oblique stopper is also arranged in the crushing chamber, a first bevel gear is fixed on the driving shaft, the first bevel gear is meshed with the second bevel gear on the output end of the forward and reverse motor, the top of the baffle is slidably connected with the guide rod, the guide rod is fixed in the cavity, and the cavity is arranged on the top of the crushing box.

[0004] By adopting the above technical scheme, sand and gravel can be screened multiple times through the screening component, and the first crushing gear and the second crushing gear are arranged between the first fixed plate and the second fixed plate, so as to further improve the crushing and screening effects. However, after the sand and gravel are crushed, the above technical scheme cannot perform secondary crushing on the larger sand and gravel after screening out. The larger sand and gravel need to be taken out manually and put into the crushing device again for crushing, which increases the labor intensity of the staff and reduces the work efficiency, making it less practical. Utility Model Content

[0005] In view of this, it is necessary to provide a sand and gravel screening and crushing device to solve the problem that after the sand and gravel are crushed, the larger sand and gravel after screening cannot be crushed for the second time. The larger sand and gravel need to be taken out manually and put into the crushing device again for crushing, which increases the labor intensity of the staff and reduces the work efficiency, making the practicability low.

[0006] According to one aspect of the utility model, a sand and gravel screening and crushing device is provided, comprising: a crushing box, the interior of the crushing box is clamped with a screen, the back of the crushing box is fixedly installed with a fixing frame, the inner wall of the fixing frame is fixedly installed with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly installed with a push plate, the bottom surface of the push plate contacts the upper surface of the screen, the inner wall of the crushing box is movably hinged with a counterweight door, the front of the crushing box is fixedly installed with a collecting frame, the bottom surface of the collecting frame is fixedly connected with a feeding hopper, a conveying box is arranged on the outer side of the collecting frame, the end of the feeding hopper away from the collecting frame passes through the conveying box and extends to the interior of the conveying box, the inner bottom wall of the conveying box is rotatably connected with a Jiaolong conveyor, a stepping motor is arranged above the conveying box, the output end of the stepping motor power passes through the conveying box and is fixedly connected to the top of the Jiaolong conveyor, the back of the conveying box is fixedly connected with a discharging frame, the back of the discharging frame passes through the crushing box and extends to the interior of the crushing box.

[0007] According to some embodiments, two motors are disposed outside the crushing box, and the output end of each motor power passes through the crushing box and is fixedly mounted with a crushing roller.

[0008] According to some embodiments, a protection box is fixedly mounted on the bottom surfaces of the two motors, and the front side of the protection box is fixedly connected to the back side of the crushing box.

[0009] According to some embodiments, a placement rack is fixedly installed on the inner wall of the crushing box, a vibration motor is arranged inside the placement rack, the upper surface of the vibration motor is fixedly connected to the bottom surface of the screen, and the upper surface of the placement rack contacts the bottom surface of the screen.

[0010] According to some embodiments, compression springs arranged at equal distances are fixedly mounted on the back of the screen, and one end of each compression spring away from the screen is fixedly connected to the inner wall of the crushing box.

[0011] According to some embodiments, the upper surface of the crushing box is fixedly connected to a feed funnel, and the bottom surface of the crushing box is fixedly connected to a discharge funnel.

[0012] According to some embodiments, four support rods are fixedly mounted on the bottom surface of the crushing box, and a fixed disc is fixedly mounted on the bottom end of each of the support rods.

[0013] According to some embodiments, a protective box is fixedly mounted on the back of the stepper motor, and the bottom surface of the protective box is fixedly connected to the upper surface of the conveying box.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The telescopic effect provided by the electric telescopic rod can drive the push plate to move, so that the push plate can push the larger sand and gravel screened out by the screen, so that the larger sand and gravel can directly enter the collection rack, and the sand and gravel are directly transported to the conveying box through the guidance of the feed hopper. The power provided by the stepper motor can drive the Jiaolong conveyor to rotate, so that the larger sand and gravel can be transported, so that after the sand and gravel are crushed, the larger sand and gravel that have been screened out can be transported to the crushing box again for secondary crushing, so that there is no need to manually take out the larger sand and gravel and put it into the crushing device for crushing, which reduces the labor intensity of the staff and increases the work efficiency, achieving a more practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a feed funnel of a sand and gravel screening and crushing device provided by the utility model;

[0018] Figure 2 A schematic diagram of a left-side sectional three-dimensional structure of a crushing box of a sand and gravel screening and crushing device provided by the utility model;

[0019] Figure 3 A schematic diagram of the three-dimensional structure of a crushing roller of a sand and gravel screening and crushing device provided by the utility model;

[0020] Figure 4 A schematic diagram of the three-dimensional structure of a vibration motor of a sand and gravel screening and crushing device provided by the utility model.

[0021] In the figure: 1. crushing box; 2. screen; 3. fixed frame; 4. electric telescopic rod; 5. push plate; 6. counterweight door; 7. collecting frame; 8. feed hopper; 9. conveying box; 10. Jiaolong conveyor; 11. stepping motor; 12. discharge rack; 13. electric motor; 14. crushing roller; 15. protection box; 16. placement rack; 17. vibration motor; 18. compression spring; 19. feed funnel; 20. discharge funnel; 21. support rod; 22. fixed disc; 23. protection box. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figures 1 to 4 The utility model provides a sand and stone screening and crushing device, comprising a crushing box 1, a screen 2 is clamped inside the crushing box 1, a fixing frame 3 is fixedly installed on the back of the crushing box 1, an electric telescopic rod 4 is fixedly installed on the inner wall of the fixing frame 3, and a push plate 5 is fixedly installed on the telescopic end of the electric telescopic rod 4, and the bottom surface of the push plate 5 contacts the upper surface of the screen 2. A counterweight door 6 is movably hinged on the inner wall of the crushing box 1, a collecting frame 7 is fixedly installed on the front of the crushing box 1, and a feeding hopper 8 is fixedly connected to the bottom surface of the collecting frame 7. A conveying box 9 is arranged on the outer side of the collecting frame 7, and one end of the feeding hopper 8 away from the collecting frame 7 passes through the conveying box 9 and extends to the inside of the conveying box 9. A dragon conveyor 10 is rotatably connected to the inner bottom wall of the conveying box 9, and a stepping motor 11 is arranged above the conveying box 9. The output end of the power of the stepping motor 11 passes through the conveying box 9 and is fixedly connected to the top of the dragon conveyor 10, and a discharging frame 12 is fixedly connected to the back of the conveying box 9, and the back of the discharging frame 12 passes through the crushing box 1 and extends to the inside of the crushing box 1.

[0024] The telescopic property provided by the electric telescopic rod 4 can drive the push plate 5 to move, so that the push plate 5 can push the larger sand and gravel screened out by the screen 2, so that the larger sand and gravel can directly enter the collecting rack 7, and the sand and gravel are directly transported to the conveying box 9 through the guidance of the feeding hopper 8. The power provided by the stepping motor 11 can drive the dragon conveyor 10 to rotate, so that the larger sand and gravel can be transported to the crushing box 1 again for crushing.

[0025] Furthermore, two motors 13 are arranged on the outside of the crushing box 1. The output end of each motor 13 passes through the crushing box 1 and is fixedly installed with a crushing roller 14. The power provided by the motor 13 can drive the crushing roller 14 to rotate, thereby crushing sand and gravel, increasing the convenience of the device.

[0026] Furthermore, a protection box 15 is fixedly installed on the bottom surfaces of the two motors 13, and the front side of the protection box 15 is fixedly connected to the back side of the crushing box 1. The protection box 15 can protect the motor 13, thereby preventing external forces from damaging the motor 13, thereby increasing the protection of the motor 13.

[0027] Furthermore, a placement rack 16 is fixedly installed on the inner wall of the crushing box 1, and a vibration motor 17 is arranged inside the placement rack 16. The upper surface of the vibration motor 17 is fixedly connected to the bottom surface of the screen 2, and the upper surface of the placement rack 16 is in contact with the bottom surface of the screen 2. The vibration motor 17 can be used to shake the screen 2, so that the sand and gravel screening rate is faster, thereby increasing the working efficiency of the device.

[0028] Furthermore, compression springs 18 are fixedly installed on the back of the screen 2 at equal distances, and one end of each compression spring 18 away from the screen 2 is fixedly connected to the inner wall of the crushing box 1. The elasticity provided by the compression springs 18 can buffer the screen 2, thereby preventing the screen 2 from falling and increasing the stability of the screen 2.

[0029] Furthermore, the upper surface of the crushing box 1 is fixedly connected to a feed funnel 19, and the bottom surface of the crushing box 1 is fixedly connected to a discharge funnel 20. The feed funnel 19 can be used to conveniently put sand and gravel into the crushing box 1 to prevent the sand and gravel from spilling, thereby further increasing the practicality of the device.

[0030] Furthermore, four support rods 21 are fixedly installed on the bottom surface of the crushing box 1, and a fixed disc 22 is fixedly installed on the bottom end of each support rod 21. The fixed disc 22 can be fixed by the support rods 21, thereby increasing the contact area between the device and the ground and increasing the stability of the device.

[0031] Furthermore, a protective box 23 is fixedly installed on the back of the stepper motor 11, and the bottom surface of the protective box 23 is fixedly connected to the upper surface of the conveying box 9. The protective box 23 can protect the stepper motor 11, thereby preventing the stepper motor 11 from being damaged by the outside world, thereby increasing the protection of the stepper motor 11.

[0032] Working principle: When in use, firstly connect the electric telescopic rod 4, the stepper motor 11, the motor 13 and the vibration motor 17 to the power supply. When the sand and gravel need to be screened and crushed, the sand and gravel are manually put into the crushing box 1 through the feeding funnel 19. The power provided by the motor 13 can drive the crushing roller 14 to rotate, so that the sand and gravel can be crushed. The vibration force provided by the vibration motor 17 can shake the screen 2 to screen the sand and gravel. The elasticity provided by the electric telescopic rod 4 can drive the push plate 5 to move, so that the push plate 5 can push the larger sand and gravel screened out by the screen 2, so that the larger sand and gravel can directly enter the collection rack 7 In the process, sand and gravel are guided by the feed hopper 8 and directly transported to the conveying box 9. The power provided by the stepper motor 11 can drive the dragon conveyor 10 to rotate, so that larger sand and gravel can be transported. After the sand and gravel are crushed, the larger sand and gravel that have been screened out can be transported to the crushing box 1 for secondary crushing, so that there is no need to manually take out the larger sand and gravel and put it into the crushing device for crushing, which reduces the labor intensity of the staff and increases the work efficiency. The stepper motor 11 can be protected by the protective box 23 to prevent external force from damaging the stepper motor 11, making the sand and gravel screening and crushing device more practical.

[0033] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

Claims

1. A sand and gravel screening and crushing device, characterized in that: The invention comprises a crushing box (1), wherein a screen (2) is clamped inside the crushing box (1), a fixing frame (3) is fixedly installed on the back of the crushing box (1), an electric telescopic rod (4) is fixedly installed on the inner wall of the fixing frame (3), a push plate (5) is fixedly installed on the telescopic end of the electric telescopic rod (4), the bottom surface of the push plate (5) is in contact with the upper surface of the screen (2), a counterweight door (6) is movably hinged on the inner wall of the crushing box (1), a collecting frame (7) is fixedly installed on the front of the crushing box (1), the bottom surface of the collecting frame (7) is fixedly connected to a feeding hopper (8), and the collecting frame (7) is A conveying box (9) is arranged on the outside, and one end of the hopper (8) away from the collecting frame (7) passes through the conveying box (9) and extends to the inside of the conveying box (9). The inner bottom wall of the conveying box (9) is rotatably connected to a Jiaolong conveyor (10). A stepper motor (11) is arranged above the conveying box (9). The output end of the power of the stepper motor (11) passes through the conveying box (9) and is fixedly connected to the top of the Jiaolong conveyor (10). The back of the conveying box (9) is fixedly connected to a discharging frame (12), and the back of the discharging frame (12) passes through the crushing box (1) and extends to the inside of the crushing box (1).

2. A sand and gravel screening and crushing device according to claim 1, characterized in that: Two motors (13) are arranged outside the crushing box (1), and the power output end of each motor (13) passes through the crushing box (1) and is fixedly mounted with a crushing roller (14).

3. A sand and gravel screening and crushing device according to claim 2, characterized in that: A protection box (15) is fixedly mounted on the bottom surfaces of the two motors (13), and the front surface of the protection box (15) is fixedly connected to the back surface of the crushing box (1).

4. A sand and gravel screening and crushing device according to claim 1, characterized in that: A placement rack (16) is fixedly mounted on the inner wall of the crushing box (1), a vibration motor (17) is arranged inside the placement rack (16), the upper surface of the vibration motor (17) is fixedly connected to the bottom surface of the screen (2), and the upper surface of the placement rack (16) is in contact with the bottom surface of the screen (2).

5. The sand and gravel screening and crushing device according to claim 1, characterized in that: Compression springs (18) arranged at equal distances are fixedly mounted on the back of the screen (2), and one end of each compression spring (18) away from the screen (2) is fixedly connected to the inner wall of the crushing box (1).

6. The sand and gravel screening and crushing device according to claim 1, characterized in that: The upper surface of the pulverizing box (1) is fixedly connected to a feeding funnel (19), and the bottom surface of the pulverizing box (1) is fixedly connected to a discharging funnel (20).

7. The sand and gravel screening and crushing device according to claim 1, characterized in that: Four support rods (21) are fixedly mounted on the bottom surface of the crushing box (1), and a fixed disc (22) is fixedly mounted on the bottom end of each support rod (21).

8. The sand and gravel screening and crushing device according to claim 1, characterized in that: A protection box (23) is fixedly mounted on the back of the stepper motor (11), and the bottom surface of the protection box (23) is fixedly connected to the upper surface of the conveying box (9).

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