An adjustable vibrating screen

Abstract

The utility model discloses an adjustable vibrating screen relates to vibrating screen technical field, including base plate, the top of base plate is provided with adjusting mechanism, the top of base plate is provided with machine frame, and the inside of machine frame is provided with cleaning mechanism, and adjusting mechanism includes mounting bracket, and mounting bracket is provided with four groups, and the rear side of two groups mounting bracket is fixed respectively with first motor, and the output of two groups first motor all is fixed with the movable disc that installs, through two groups first motor drive two groups movable disc rotation, and through four groups by second motor drive worm drive, cooperate the eccentric block structure of screw thread adjustable, realized the control and regulation of vibration amplitude, when second motor drives worm rotation, and the eccentric block of screw thread cooperation will produce axial displacement along slide rod, thereby change eccentricity of eccentric wheel, through control four groups eccentric block's synchronous displacement amount, can realize the stepless regulation of vibration amplitude in 0 50mm range, make single equipment can satisfy the screening demand of different material.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to an adjustable vibrating screen. Background Technology

[0002] A vibrating screen works by utilizing the reciprocating rotary vibration generated by a vibrator. The upper rotating weight of the vibrator causes the screen surface to produce planar rotary vibration, while the lower rotating weight causes the screen surface to produce conical rotary vibration. The combined effect of these two forces results in a complex rotary vibration of the screen surface.

[0003] Common vibrating screens have limited applicability because the vibration amplitude cannot be adjusted when screening raw materials. When different vibration amplitudes are required, multiple vibrating screens with different amplitudes need to be prepared, which increases production costs. In addition, after screening, some small particles often remain in the screen holes. If they are not cleaned in time, they will clog the screen holes and affect the normal screening function of the screen. Utility Model Content

[0004] To solve the above-mentioned technical problems, an adjustable vibrating screen is provided. This technical solution addresses the common vibrating screens mentioned in the background art, which have limited applicability due to the inability to adjust the vibration amplitude when screening raw materials. When different vibration amplitudes are required for screening, multiple vibrating screens with different amplitudes need to be prepared, increasing production costs. Furthermore, after screening, common vibrating screens often leave small particles in the screen holes, which, if not cleaned in time, will clog the screen holes and affect the normal screening function of the screen.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An adjustable vibrating screen includes a base plate, an adjustment mechanism at the top of the base plate, a frame at the top of the base plate, and a cleaning mechanism inside the frame. The adjustment mechanism includes a mounting frame, which is provided in four sets. Two sets of the mounting frames are each fixedly mounted with a first motor on their rear side. The output ends of both sets of the first motors are each fixedly mounted with a movable disc. There are four sets of movable discs, each rotatably mounted inside the mounting frame. Two sets of fixing blocks are provided inside each of the four sets of movable discs. A worm gear is rotatably mounted inside each of the eight sets of fixing blocks. Two sets of sliding rods are provided on the outer side of the eight sets of fixing blocks, away from the four sets of worm gears. An eccentric block is threaded onto the outer surface of each of the four sets of worm gears. The four sets of eccentric blocks are also slidably mounted on the outer surface of the eight sets of sliding rods. An eccentric wheel is fixedly mounted inside each of the four sets of eccentric blocks.

[0006] Preferably, the four sets of eccentric wheels are connected by two sets of transmission shafts. Each of the four sets of eccentric wheels has a movable wheel installed inside. The top of each of the four sets of movable wheels is fixedly installed at the bottom of the feeding plate. A screen is provided at the top of the feeding plate, and a slag discharge plate is provided at the front right side of the feeding plate.

[0007] Preferably, one end of each of the four sets of worm gears is fixedly installed at the output end of the second motor.

[0008] Preferably, the bottom end of the feeding plate is provided with a telescopic rod, and there are four sets of telescopic rods. The four sets of telescopic rods are located at the four corners of the bottom end of the feeding plate, and the outer surface of the telescopic end of each of the four sets of telescopic rods is fitted with a first spring.

[0009] Preferably, the cleaning mechanism includes an electric lifting rod, and two sets of the electric lifting rod are provided. Both sets of the electric lifting rod are located at the top of the machine frame. The telescopic ends of both sets of the electric lifting rod are fixedly installed at the top of the mounting plate. A second spring is provided at each of the four corners of the bottom end of the mounting plate, and the other ends of the four sets of second springs are located at the four corners of the top end of the cleaning plate.

[0010] Preferably, the bottom end of the cleaning plate is provided with several sets of cleaning columns.

[0011] Compared with the prior art, the beneficial effects of this utility model are: First, two sets of first motors drive two sets of movable discs to rotate, and four sets of worm gears driven by second motors, combined with a threaded adjustable eccentric block structure, achieve vibration amplitude control. When the second motor drives the worm gears to rotate, the eccentric blocks that are threaded with them will generate axial displacement along the slide rod, thereby changing the eccentricity of the eccentric wheel. By controlling the synchronous displacement of the four sets of eccentric blocks, the vibration amplitude can be steplessly adjusted within the range of 0-50mm. This design allows a single unit to meet the screening needs of different materials, effectively reducing the production cost for enterprises to purchase multiple units. Second, a cleaning mechanism is provided. An electric lifting rod drives the mounting plate to descend, and a second spring at the bottom of the mounting plate pushes the cleaning plate, causing several sets of cleaning columns at the bottom of the cleaning plate to insert into the screen holes of the screen. During the cleaning process, the electric lifting rod can control the up and down movement of the cleaning plate, and the second spring acts as a buffer, ensuring that the cleaning columns make full contact with the screen holes and do not damage the screen due to excessive pressure. This achieves timely cleaning of small particles remaining in the screen holes, avoids screen hole blockage, and ensures the normal screening function of the screen. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3This is a schematic diagram of the adjustment mechanism structure of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model from another perspective; The numbers on the map are: 1. Substrate; 2. Adjustment mechanism; 201. Mounting frame; 202. First motor; 203. Movable disc; 204. Fixed block; 205. Eccentric block; 206. Worm gear; 207. Slide rod; 208. Second motor; 209. Movable wheel; 210. Eccentric wheel; 211. Drive shaft; 212. Screen; 213. Slag discharge plate; 214. Feeding plate; 215. Telescopic rod; 216. First spring; 3. Machine frame; 4. Cleaning mechanism; 401. Electric lifting rod; 402. Mounting plate; 403. Second spring; 404. Cleaning plate. Detailed Implementation

[0013] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0014] Reference Figures 1-4 As shown, an adjustable vibrating screen includes a base plate 1, an adjustment mechanism 2 at the top of the base plate 1, and a frame 3 at the top of the base plate 1. A cleaning mechanism 4 is located inside the frame 3. The adjustment mechanism 2 includes a mounting frame 201, of which four sets are provided. Two sets of mounting frames 201 are respectively fixedly mounted with a first motor 202 on their rear sides. Movable discs 203 are fixedly mounted at the output ends of both sets of first motors 202. Four sets of movable discs 203 are provided, each rotatably mounted inside the mounting frame 201. Two sets of fixing blocks 204 are provided inside each of the four sets of movable discs 203. Worms 206 are rotatably mounted inside each of the eight sets of fixing blocks 204. One end of each of the four sets of worms 206 is fixedly mounted... The eight sets of fixed blocks 204 are fixed at the output end of the second motor 208. Two sets of sliding rods 207 are provided on the inner side of the eight sets of fixed blocks 204 away from the outer side of the four sets of worm gears 206. The outer surfaces of the four sets of worm gears 206 are threaded with eccentric blocks 205. The four sets of eccentric blocks 205 are also slidably installed on the outer surfaces of the eight sets of sliding rods 207. The inner side of the four sets of eccentric blocks 205 is fixedly installed with eccentric wheels 210. The four sets of eccentric wheels 210 are connected by two sets of transmission shafts 211. The interior of the four sets of eccentric wheels 210 is movably installed with movable wheels 209. The top of the four sets of movable wheels 209 is fixedly installed at the bottom of the feed plate 214. The top of the feed plate 214 is provided with a screen 212. The front right side of the feed plate 214 is provided with a slag discharge plate 213.

[0015] In this scheme, the first motor 202 drives the movable disk 203 to rotate, realizing the synchronous movement of the four sets of eccentric wheels 210, ensuring that the screen 212 generates a stable vibration frequency. A threaded transmission structure of worm 206 and eccentric block 205 is provided. The rotation of worm 206 is adjusted by the second motor 208, realizing the precise displacement of eccentric block 205. The sliding fit structure of slide rod 207 and eccentric block 205 restricts the movement trajectory of eccentric block 205, realizing stable control of vibration amplitude and improving screening accuracy. The rolling fit between movable wheel 209 and eccentric wheel 210 realizes high-frequency micro-amplitude vibration of feed plate 214. The slag discharge plate 213 is inclined and installed on the side of feed plate 214, realizing the automatic sliding of screened waste, thereby changing the vibration torque to adapt to the screening requirements of different materials. The four sets of eccentric wheels 210 are connected by two sets of transmission shafts 211, realizing the uniform distribution of vibration force.

[0016] Reference Figure 2 As shown, a telescopic rod 215 is provided at the bottom of the feeding plate 214. There are four sets of telescopic rods 215, which are located at the four corners of the bottom of the feeding plate 214. A first spring 216 is sleeved on the outer surface of the telescopic end of each of the four sets of telescopic rods 215.

[0017] In this scheme, the feed plate 214 is supported by the telescopic rod 215, which realizes the elastic vibration of the screen 212 and reduces rigid impact. Secondly, a first spring 216 is provided on the outside of the telescopic rod 215, which absorbs vibration energy through elastic deformation and improves screening efficiency.

[0018] Reference Figure 2 As shown, the cleaning mechanism 4 includes an electric lifting rod 401. There are two sets of electric lifting rods 401, and both sets of electric lifting rods 401 are located at the top of the frame 3. The telescopic ends of both sets of electric lifting rods 401 are fixedly installed at the top of the mounting plate 402. The bottom four corners of the mounting plate 402 are provided with second springs 403. The other ends of the four sets of second springs 403 are located at the top four corners of the cleaning plate 404. The bottom of the cleaning plate 404 is provided with several sets of cleaning columns.

[0019] In this solution, the mounting plate 402 is moved up and down by the electric lifting rod 401, realizing the height adjustment function of the cleaning plate 404, which can adapt to material layers of different thicknesses. Secondly, the mounting plate 402 and the cleaning plate 404 are connected by a second spring 403. Through the elastic buffering effect, the cleaning column makes flexible contact with the screen 212, avoiding wear caused by rigid impact. Furthermore, the cleaning columns set at the bottom of the cleaning plate 404 achieve all-round cleaning of the screen 212 surface, effectively preventing screen hole blockage. The array arrangement of the cleaning columns achieves thorough removal of residual materials through multi-point contact with the screen surface.

[0020] The working principle of this utility model is as follows: When the device is in use, firstly, the second motor 208 drives the worm gear 206 to rotate, causing the eccentric block 205 to move along the slide bar 207, adjusting the vibration torque of the eccentric wheel 210. The transmission shaft 211 connects four sets of eccentric wheels 210 to ensure uniform distribution of vibration force. The movable wheel 209 cooperates with the eccentric wheel 210 and drives the movable disk 203 to rotate through the first motor 202, causing the eccentric wheel 210 to move synchronously, resulting in high-frequency vibration of the feeding plate 214. Secondly, the feeding plate 214 is supported by the telescopic rod 215, and the first spring 216 absorbs the vibration energy to achieve elastic damping. When the screen 212 vibrates, the material is screened, and the waste is automatically discharged through the slag discharge plate 213. Finally, the electric lifting rod 401 drives the mounting plate 402 to rise and fall, and the second spring 403 keeps the cleaning plate 404 under appropriate pressure. The cleaning column moves with the cleaning plate 404 to remove residual material on the surface of the screen 212 and prevent blockage.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable vibrating screen, comprising a base plate (1), characterized in that, An adjustment mechanism (2) is provided at the top of the substrate (1), a frame (3) is provided at the top of the substrate (1), and a cleaning mechanism (4) is provided inside the frame (3). The adjustment mechanism (2) includes a mounting frame (201), which is provided in four sets. Two sets of the mounting frames (201) have a first motor (202) fixedly mounted on their rear sides. The output ends of both sets of the first motors (202) are fixedly mounted with movable discs (203). Four sets of movable discs (203) are provided, and all four sets are rotatably mounted inside the mounting frame (201). Two sets of fixed... The inner side of each of the eight sets of fixed blocks (204) is rotatably mounted with a worm gear (206). Two sets of sliding rods (207) are provided on the outer side of the eight sets of fixed blocks (204) away from the four sets of worm gears (206). The outer surface of each of the four sets of worm gears (206) is threaded with an eccentric block (205). The four sets of eccentric blocks (205) are also slidably mounted on the outer surface of the eight sets of sliding rods (207). An eccentric wheel (210) is fixedly mounted on the inner side of each of the four sets of eccentric blocks (205).

2. The adjustable vibrating screen according to claim 1, characterized in that: The four sets of eccentric wheels (210) are connected by two sets of transmission shafts (211). Each of the four sets of eccentric wheels (210) has a movable wheel (209) installed inside. The top of each of the four sets of movable wheels (209) is fixedly installed at the bottom of the feed plate (214). The top of the feed plate (214) is provided with a screen (212), and the front right side of the feed plate (214) is provided with a slag discharge plate (213).

3. An adjustable vibrating screen according to claim 1, characterized in that: One end of each of the four sets of worm gears (206) is fixedly installed at the output end of the second motor (208).

4. An adjustable vibrating screen according to claim 2, characterized in that: The bottom end of the feed plate (214) is provided with a telescopic rod (215), and there are four sets of the telescopic rod (215). The four sets of the telescopic rod (215) are located at the four corners of the bottom end of the feed plate (214), and the outer surface of the telescopic end of the four sets of the telescopic rod (215) is fitted with a first spring (216).

5. An adjustable vibrating screen according to claim 1, characterized in that: The cleaning mechanism (4) includes an electric lifting rod (401), which is provided in two sets. Both sets of electric lifting rods (401) are located at the top of the frame (3). The telescopic ends of both sets of electric lifting rods (401) are fixedly installed at the top of the mounting plate (402). The bottom four corners of the mounting plate (402) are provided with second springs (403). The other ends of the four sets of second springs (403) are located at the top four corners of the cleaning plate (404).

6. An adjustable vibrating screen according to claim 5, characterized in that: The bottom end of the cleaning plate (404) is provided with several sets of cleaning columns.

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