Multipurpose stone screening device

Abstract

The utility model relates to the technical field of stone screening, in particular to a multipurpose stone screening device which comprises a screening box, the upper end of the inner wall of the screening box is rotationally connected with two crushing rollers, and one ends of the two crushing rollers are connected with one end of the screening box; through the arrangement of the screening mechanism, when stone is screened, a second motor is started, under the action of a cam and the self weight of the stone, a screening plate can vibrate up and down in a reciprocating mode to screen the stone, multi-stage classification of the stone is completed through the screening plate, and when the screening plate screens the stone, the screening efficiency is improved. A reciprocating screw rod can be driven to synchronously rotate under the action of a belt pulley and a conveying belt, and a shifting plate is driven to reciprocate under the action of a moving rod, a connecting rod and a mounting rod to turn over stones above a sieve plate, so that accumulated raw materials can be dispersed, and the sieved stones are in full contact with the sieve plate and are sieved; stone is ensured to be fully screened, and the screening effect of the stone is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of stone screening technology, and in particular to a multi-purpose stone screening device. Background Technology

[0002] Stone is rock or stone material, usually referring to stone used in construction or carving. In the construction industry, stone is often used in large quantities in the form of crushed stone and sand. When stone is used, it is usually screened by screening devices according to the needs of use, so that it is classified according to different particle sizes to meet the needs of use.

[0003] The Chinese patent "A Crushing and Screening Device for Mining Stones" (authorization announcement number CN219647613U) describes a device that uses a vibrating screen plate at a 15°-20° angle to the horizontal ground. The screen plate has primary, secondary, and tertiary screen holes sequentially arranged from the feed hopper to the collection box at its top. This allows the stone to slide off the screen plate after being crushed by the crushing rollers, enabling multi-stage screening of different sizes to meet various user needs.

[0004] Although the above application can perform multi-layer screening of stone, when a large amount of stone falls onto the screen plate for screening, the inclined setting of the screen plate will accelerate the sliding speed of the stone on the screen plate. This will cause some of the stone piled up on the top to fall onto the next screen without being fully screened, thus resulting in insufficient stone screening and affecting the stone screening effect.

[0005] Therefore, a multi-purpose stone screening device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a multi-purpose stone screening device to solve the above-mentioned problems. It improves the problem that when a large amount of stone falls onto the screen plate for screening, the inclined screen plate accelerates the sliding speed of the stone on the screen plate, causing some of the stone piled up on the top to fall onto the next screen without being fully screened, thus resulting in insufficient stone screening and affecting the stone screening effect.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a multi-purpose stone screening device, comprising: a screening box, wherein two crushing rollers are rotatably connected to the upper end of the inner wall of the screening box, one end of each of the two crushing rollers passes through the screening box and is fixedly connected to a gear, the two gears meshing together, a first motor is fixedly connected to the upper end of one side of the screening box, and the other end of one of the gears is fixedly connected to the output shaft of the first motor; a screening mechanism is provided inside the screening box; wherein the screening mechanism includes a screen plate slidably connected to the inner wall of the screening box, a reciprocating screw rotatably connected to the inner wall of the screening box, a moving rod provided on the surface of the reciprocating screw, a connecting rod slidably connected to the inner wall of the moving rod, a mounting rod fixedly connected to the bottom end of the connecting rod passing through the moving rod, and an equally arranged actuating plate fixedly connected to the bottom end of the mounting rod.

[0008] Preferably, the screening mechanism further includes a second motor fixedly connected to the lower end of one side of the screening box. A rotating shaft is rotatably connected to the lower end of the inner wall of the screening box. The output shaft of the second motor passes through the screening box and is fixedly connected to one end of the rotating shaft. Two cams are fixedly connected to the surface of the rotating shaft, and the surfaces of the cams are in contact with the bottom end of the screen plate. Pulleys are fixedly connected to the surface of the output shaft of the second motor and one end of the reciprocating screw. A transmission belt is connected between the two pulleys. By starting the second motor, the screen plate is assisted to vibrate up and down to screen the stone under the action of the cams and the weight of the stone itself. The screen plate completes the multi-stage classification of the stone. While the screen plate is screening the stone, the reciprocating screw will rotate synchronously under the action of the pulleys and the transmission belt, which improves the consistency of the device operation.

[0009] Preferably, a feeding frame is fixedly connected to the inner wall of the screening box, and the bottom end of the feeding frame has equally spaced through holes. This facilitates the dispersed feeding of the crushed stone, allowing it to fall onto the screen plate in a dispersed manner, preventing the stone from accumulating on the screen plate, thereby improving the screening effect.

[0010] Preferably, a round rod is fixedly connected to one side of the top of the sieve plate, and a fixed rod is slidably connected to the surface of the round rod. The top of the fixed rod is fixedly connected to the bottom of the mounting rod. This facilitates the synchronous up-and-down movement of the mounting rod and the actuating plate with the sieve plate, thereby ensuring that the bottom of the actuating plate is always in contact with the top of the sieve plate during the screening process, thus improving the effectiveness of the device.

[0011] Preferably, the inner bottom wall of the feeding frame is fixedly connected with multiple guide plates. The guide plates are in the shape of an inverted "V" and are positioned between two adjacent through holes. This facilitates the better passage of stones through the through holes and prevents stones from remaining in the feeding frame.

[0012] Preferably, a circular ring is fixedly connected to the inner wall of the screening box, and the reciprocating screw is disposed on the inner side of the circular ring. This helps to protect the reciprocating screw.

[0013] Preferably, the surface of the agitator is curved in an arc shape, and both sides of the agitator form an angle with the vertical plane. This facilitates better turning of the stone.

[0014] Preferably, the bottom end of the agitator plate is in contact with the top end of the sieve plate, ensuring effective turning of the stone.

[0015] The beneficial effects of this utility model are:

[0016] 1. The screening mechanism is designed to screen the stone by starting the second motor. Under the action of the cam and the weight of the stone itself, the screen plate vibrates up and down to screen the stone. The screen plate completes the multi-level classification of the stone. While the screen plate is screening the stone, the pulley and the transmission belt drive the reciprocating screw to rotate synchronously. Under the action of the moving rod, connecting rod and mounting rod, the agitator plate moves back and forth to turn the stone above the screen plate. This helps to disperse the accumulated raw materials, so that the stone being screened can fully contact the screen plate and be screened, ensuring that the stone is fully screened and enhancing the screening effect.

[0017] 2. The feeding frame and multiple through holes help to disperse the crushed stone, allowing it to fall onto the screen plate in a dispersed manner, thus preventing the stone from accumulating on the screen plate and improving the screening effect.

[0018] 3. When the screen plate moves up and down, the action of the round rod and the fixed rod helps to drive the mounting rod and the actuating plate to move up and down synchronously with the screen plate, thereby ensuring that the bottom end of the actuating plate is always in contact with the top end of the screen plate during the screening process, thus improving the effectiveness of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional view of the screening box of this utility model;

[0021] Figure 3 This is a schematic diagram of the screening mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the toggle plate structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the material feeding frame structure of this utility model.

[0024] In the diagram: 1. Screening box; 2. Crushing roller; 21. Gear; 22. First motor; 3. Screening mechanism; 31. Screen plate; 32. Reciprocating screw; 33. Moving rod; 34. Connecting rod; 35. Mounting rod; 36. Actuating plate; 37. Second motor; 38. Rotating shaft; 39. Cam; 310. Pulley; 311. Conveyor belt; 312. Feeding frame; 313. Through hole; 314. Guide plate; 315. Round rod; 316. Fixed rod; 317. Ring. Detailed Implementation

[0025] 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.

[0026] In practical implementation: such as Figure 1-5 As shown, a multi-purpose stone screening device includes: a screening box 1, with two crushing rollers 2 rotatably connected to the upper end of the inner wall of the screening box 1. One end of each crushing roller 2 passes through the screening box 1 and is fixedly connected to a gear 21. The two gears 21 are meshed together. A first motor 22 is fixedly connected to the upper end of one side of the screening box 1. The other end of one gear 21 is fixedly connected to the output shaft of the first motor 22. A screening mechanism 3 is provided inside the screening box 1. The screening mechanism 3 includes a screen plate 31 slidably connected to the inner wall of the screening box 1. A reciprocating screw 32 is rotatably connected to the inner wall of the screening box 1. A moving rod 33 is provided on the surface of the reciprocating screw 32. A connecting rod 34 is slidably connected to the inner wall of the moving rod 33. The bottom end of the connecting rod 34 passes through the moving rod 33 and is fixedly connected to an installation rod 35. An equally arranged actuating plate 36 is fixedly connected to the bottom end of the installation rod 35. The surface of the actuating plate 36 is curved into an arc shape, and both sides of the actuating plate 36 form an angle with the vertical plane. The bottom end of the actuating plate 36 is in contact with the top end of the sieve plate 31.

[0027] A feed inlet is provided on one side of the top of the screening box 1. When it is necessary to crush and screen the stone, the stone is put in through the feed inlet and the controller starts the first motor 22 to drive one of the gears 21 to rotate. At this time, under the interaction of the two gears 21, the two crushing rollers 2 will rotate in opposite directions to crush the stone.

[0028] The sieve plate 31 has the same mechanism as in the original scheme and is set at an inclination. The top of the sieve plate 31 has a first sieve hole, a second sieve hole and a third sieve hole in sequence from one end of the feed inlet to the other end. The diameter of the first sieve hole, the second sieve hole and the third sieve hole gradually decreases. A guide plate is set below each set of sieve holes. The other end of the guide plate passes through the screening box 1. The screened stone will fall into the corresponding guide plate and be discharged from the screening box 1 through the guide plate.

[0029] like Figure 2 and Figure 3 As shown, the screening mechanism 3 also includes a second motor 37 fixedly connected to the lower end of one side of the screening box 1. A rotating shaft 38 is rotatably connected to the lower end of the inner wall of the screening box 1. The output shaft of the second motor 37 passes through the screening box 1 and is fixedly connected to one end of the rotating shaft 38. Two cams 39 are fixedly connected to the surface of the rotating shaft 38. The surface of the cams 39 is in contact with the bottom end of the screen plate 31. A pulley 310 is fixedly connected to the surface of the output shaft of the second motor 37 and one end of the reciprocating screw 32. A transmission belt 311 is connected between the two pulleys 310.

[0030] When the crushed stone falls onto the screen plate 31, the controller starts the second motor 37 to drive the rotating shaft 38 to rotate, which in turn drives the cam 39 to rotate. When the highest point of the cam 39 contacts the bottom end of the screen plate 31, the cam 39 pushes the screen plate 31 to move upward to the highest distance. When the lowest point of the cam 39 contacts the bottom end of the screen plate 31, the screen plate 31 moves downward to the lowest distance under the weight of the stone itself. Therefore, as the cam 39 continues to rotate, the screen plate 31 will vibrate up and down to screen the stone, and under the action of the first screen hole, the second screen hole and the third screen hole, multi-level classification is completed.

[0031] At the same time, when the second motor 37 starts, it will drive one of the pulleys 310 to rotate synchronously. Under the action of the transmission belt 311 and the other pulley 310, it will drive the reciprocating screw 32 to rotate synchronously. The reciprocating screw is in the form of two threaded grooves with the same pitch and opposite directions, connected at both ends by a transition curve. Through the rotation of the reciprocating screw, the side of the spiral groove pushes the slider placed in the spiral groove to make axial reciprocating motion. Therefore, when the reciprocating screw 32 rotates, it will drive the moving rod 33 and the connecting rod 34 to move synchronously, thereby causing the mounting rod 35 to drive the actuating plate 36 to move synchronously. During the movement, the actuating plate 36 will turn over the stone material above the screen plate 31, disperse the accumulated raw material, and thus make the stone material to be screened fully contact the screen plate 31 for screening.

[0032] like Figure 5As shown, a feeding frame 312 is fixedly connected to the inner wall of the screening box 1, and the bottom end of the feeding frame 312 is provided with equally spaced through holes 313. Multiple guide plates 314 are fixedly connected to the inner bottom wall of the feeding frame 312. The overall shape of the guide plate 314 is an inverted "V" shape, and the guide plate 314 is disposed between two adjacent through holes 313.

[0033] After the two crushing rollers 2 crush the stone, the stone will fall into the feeding frame 312. The two sides of the feeding frame 312 are inclined to facilitate better material reception. After the stone falls into the feeding frame 312, it will fall onto the screen plate 31 through multiple through holes 313. The guide plate 314 and the inner bottom wall of the feeding frame 312 cooperate to form an isosceles triangle.

[0034] like Figure 4 As shown, a round rod 315 is fixedly connected to one side of the top of the sieve plate 31, and a fixed rod 316 is slidably connected to the surface of the round rod 315. The top of the fixed rod 316 is fixedly connected to the bottom of the mounting rod 35.

[0035] When the mounting rod 35 moves, it will drive the fixed rod 316 to move synchronously. When the screen plate 31 moves upward under the action of the cam 39, the round rod 315 and the fixed rod 316 will push the mounting rod 35 and the actuating plate 36 to move upward synchronously, so that the bottom end of the actuating plate 36 is always in contact with the top end of the screen plate 31.

[0036] like Figure 4 As shown, a ring 317 is fixedly connected to the inner wall of the screening box 1, and a reciprocating screw 32 is disposed on the inner side of the ring 317. A groove matching the moving rod 33 is provided at the lower end of the surface of the ring 317.

[0037] In use, when screening stone materials, the stone materials are first fed into the inlet, and the first motor 22 is started by the controller. Under the interaction of the two gears 21, the two crushing rollers 2 rotate in opposite directions to crush the stone materials. The crushed stone materials fall into the feed frame 312 and onto the screen plate 31 through multiple through holes 313. At this time, the second motor 37 is started by the controller, driving the rotating shaft 38 and cam 39 to rotate synchronously. Under the action of the cam 39 and the gravity of the stone materials themselves, the screen plate 31 vibrates up and down to screen the stone materials. At this time, under the action of the first screen hole, second screen hole and third screen hole opened in the screen plate 31, multi-level classification is completed. Simultaneously, when the screen plate 31 moves up and down, the mounting rod 35 and the actuating plate 36 move up and down synchronously under the action of the round rod 315 and the fixed rod 316. At the same time, when the second motor 37 starts, it will drive one of the pulleys 310 to rotate synchronously, and under the action of the transmission belt 311 and the other pulley 310, it will drive the reciprocating screw 32 to rotate synchronously, thereby driving the moving rod 33 and the connecting rod 34 to move synchronously, so that the mounting rod 35 drives the actuating plate 36 to move synchronously. During the movement, the actuating plate 36 will turn over the stone material above the screen plate 31, so that the accumulated raw material is dispersed, so that the stone material to be screened can fully contact the screen plate 31 for screening.

[0038] It should be noted that the first motor 22 and the second motor 37 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the first motor 22 and the second motor 37 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0039] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A multi-purpose stone screening device, characterized in that: include: A screening box (1), wherein the upper end of the inner wall of the screening box (1) is rotatably connected to two crushing rollers (2), one end of each of the two crushing rollers (2) passes through the screening box (1) and is fixedly connected to a gear (21), the two gears (21) are meshingly connected, a first motor (22) is fixedly connected to the upper end of one side of the screening box (1), the other end of one of the gears (21) is fixedly connected to the output shaft of the first motor (22), and a screening mechanism (3) is arranged inside the screening box (1); The screening mechanism (3) comprises a screening plate (31) slidably connected to the inner wall of the screening box (1); the inner wall of the screening box (1) is rotatably connected to a reciprocating screw rod (32); a moving rod (33) is arranged on the surface of the reciprocating screw rod (32); a connecting rod (34) is slidably connected to the inner wall of the moving rod (33); the bottom end of the connecting rod (34) passes through the moving rod (33) and is fixedly connected to a mounting rod (35); the bottom end of the mounting rod (35) is fixedly connected to a toggle plate (36) distributed in an equal row.

2. A multi-purpose stone screening device according to claim 1, characterized in that: The screening mechanism (3) further comprises a second motor (37) fixedly connected to the lower end of one side of the screening box (1); the lower end of the inner wall of the screening box (1) is rotatably connected to a rotating shaft (38); the output shaft of the second motor (37) passes through the screening box (1) and is fixedly connected to one end of the rotating shaft (38); two cams (39) are fixedly connected to the surface of the rotating shaft (38); the surface of the cams (39) is in contact with the bottom end of the screening plate (31); the surface of the output shaft of the second motor (37) and one end of the reciprocating screw rod (32) are fixedly connected to a pulley (310); a transmission belt (311) is connected between the two pulleys (310).

3. A multi-purpose stone screening device according to claim 1, characterized in that: A material discharge frame (312) is fixedly connected to the inner wall of the screening box (1), and through holes (313) distributed in equal rows are provided at the bottom end of the material discharge frame (312).

4. The multi-purpose stone screening device according to claim 1, characterized in that: A round rod (315) is fixedly connected to one side of the top end of the sieve plate (31), a fixed rod (316) is slidably connected to the surface of the round rod (315), and the top end of the fixed rod (316) is fixedly connected to the bottom end of the mounting rod (35).

5. The multi-purpose stone screening device according to claim 3 is characterized in that: A plurality of guide plates (314) are fixedly connected to the inner bottom wall of the blanking frame (312); the overall shape of the guide plates (314) is an inverted "V" shape, and the guide plates (314) are arranged between two adjacent through holes (313).

6. The multi-purpose stone screening device according to claim 1, characterized in that: A circular ring (317) is fixedly connected to the inner wall of the screening box (1), and the reciprocating screw rod (32) is arranged on the inner side of the circular ring (317).

7. The multi-purpose stone screening device according to claim 1, characterized in that: The surface of the toggle plate (36) is curved in an arc shape, and both sides of the toggle plate (36) form an angle with a vertical plane.

8. The multi-purpose stone screening device according to claim 1, characterized in that: The bottom end of the shifting plate (36) is in contact with the top end of the sieve plate (31).

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