Screening device

Abstract

The utility model provides a screening device. The screening device comprises a screening assembly and an anti-blocking assembly (3), the screening assembly comprises a screen, the anti-blocking assembly (3) comprises a mounting seat (31), a lifting structure and a knocking part (34), the lifting structure and the knocking part (34) are arranged in the mounting seat (31), the lifting structure is in driving connection with the knocking part (34), and the knocking part (34) can knock the screen. According to the screening device, the problem that an existing screening device needs to be shut down to conduct manual dredging on the screen cloth of the screening device can be solved, and therefore production efficiency is improved, and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of material screening technology, and more specifically, to a screening device. Background Technology

[0002] Screening devices, especially vibrating screens, are key equipment in industrial production for material classification and impurity removal. In the preparation of potassium chloride, vibrating screens are used to separate coarse impurities from fine particles in carnallite ore, ensuring the purity of raw materials for subsequent processing, thereby improving the quality of the final product and production efficiency. However, during the screening process, screens are prone to clogging by impurities. Excessive clogging prevents material from passing through the screen smoothly, leading to a significant decrease in screening efficiency. Existing screening devices typically require shutdown and manual maintenance to resolve clogging issues, further reducing production efficiency and increasing production and maintenance costs. Utility Model Content

[0003] The main purpose of this invention is to provide a screening device that solves the problem that existing screening devices require shutdown for manual cleaning of the screens, thereby improving production efficiency and reducing maintenance costs.

[0004] To achieve the above objectives, according to one aspect of the present invention, a screening device is provided, including a screening component and an anti-clogging component. The screening component includes a screen, and the anti-clogging component includes a mounting base, a lifting structure, and a striking part. The lifting structure and the striking part are disposed in the mounting base, and the lifting structure is drivenly connected to the striking part, which is capable of striking the screen.

[0005] Furthermore, the lifting structure includes a first driving part and a locking part. The first driving part is disposed on the mounting base, and the locking part is disposed inside the mounting base. The first driving part and the locking part are drivenly connected. The first driving part can drive the striking part to move upward within the mounting base through the locking part.

[0006] Furthermore, the first driving unit includes an electromagnetic slide rail and a first slider. The electromagnetic slide rail is disposed in the mounting base, and the first slider is disposed on the electromagnetic slide rail. The electromagnetic slide rail is drivenly connected to the first slider, and a locking part is disposed on the first slider.

[0007] Furthermore, the locking part includes an electromagnetic adsorption component, the first driving part is drivenly connected to the electromagnetic adsorption component, and the striking part is magnetically adsorbed onto the electromagnetic adsorption component.

[0008] Furthermore, the locking part includes a gripper and a second driving part, which are disposed on the first slider, and the second driving part is drivenly connected to the gripper.

[0009] Furthermore, the locking part includes a gripper, which includes a gripper portion and an unlocking portion. A rotating shaft is provided on the first slider, and the gripper portion and the unlocking portion are hinged on the rotating shaft. The gripper portion is located on the first side of the rotating shaft facing the striking part, and the unlocking portion is located on the second side of the rotating shaft away from the striking part. An elastic tensioning portion is provided on the gripper, and the inner side of the gripper portion is a clamping space. The elastic tensioning portion can pull the gripper portion into the clamping space. An unlocking groove is provided on the top of the mounting base. When the gripper is in the clamping state, the gripper portion clamps the striking part; the unlocking portion can retract under the action of the unlocking groove, causing the gripper portion to open and thereby releasing the gripper portion from clamping the striking part.

[0010] Furthermore, the gripper portion is provided with a snap-fit ​​portion that extends into the clamping space. The end of the snap-fit ​​portion away from the gripper portion is provided with a first guide slope, and the striking portion is provided with a snap-fit ​​groove. When the gripper is in the clamping state, the snap-fit ​​portion is snapped and fixed with the snap-fit ​​groove.

[0011] Furthermore, the gripper includes a first gripper and a second gripper, which are rotatably mounted on the first slider. The first gripper and the second gripper are arranged opposite to each other. The elastic tensioning part includes a first tensioning section and a second tensioning section. A fixing part is provided on the first slider. The inner side of the gripper part is a clamping space. The fixing part is disposed in the clamping space. One end of the first tensioning section is connected to the first gripper and the other end is connected to the fixing part. One end of the second tensioning section is connected to the fixing part and the other end is connected to the second gripper.

[0012] Furthermore, the outer surface of the unlocking part is provided with a second guide slope, and the distance between the second guide slopes on the outer surface of the unlocking part first increases and then decreases in the direction away from the rotating shaft.

[0013] Furthermore, the striking part is provided with a first connecting part and a protrusion. The first connecting part is located on the top of the striking part, and the protrusion is located on the top of the first connecting part. A snap-fit ​​groove is formed between the protrusion and the striking part.

[0014] Furthermore, the bottom of the mounting base is provided with a through hole, through which the striking part can pass to strike the screen.

[0015] Furthermore, the screening device also includes a third drive unit and a reciprocating motion mechanism. One end of the reciprocating motion mechanism is driven and connected to the third drive unit, and the other end is connected to the screening component. The third drive unit can drive the reciprocating motion mechanism to drive the screening component to perform reciprocating motion.

[0016] Furthermore, the screening device also includes a frame structure, a third drive unit is disposed within the frame structure, the screening assembly includes a coarse screen box, the coarse screen box is slidably disposed on the top of the frame structure, the output end of the third drive unit is provided with a rotating shaft, the third drive unit is drivenly connected to the rotating shaft, a pulley transmission mechanism is provided on the rotating shaft, the drive wheel of the pulley transmission mechanism is sleeved on the rotating shaft and fixedly connected to the rotating shaft, the output end of the pulley transmission mechanism is provided with a crank-connecting rod mechanism, the output end of the crank-connecting rod mechanism is connected to the coarse screen box.

[0017] Furthermore, the screening assembly also includes a fine screen box, which is slidably disposed on the side of the frame structure. A first discharge port is provided on the side of the coarse screen box. The fine screen box and the first discharge port are located on the same side. A cam is provided at the end of the rotating shaft away from the third drive unit. The cam contacts the side of the fine screen box. A second reset member is provided on the other side of the fine screen box away from the cam. A pulley is provided at the bottom of the fine screen box.

[0018] Furthermore, the second reset member includes a second connecting part and an elastic member. The second connecting part is disposed on the frame structure and extends toward the side of the fine screen box away from the cam. The elastic member is disposed on the second connecting part and can push the fine screen box to always maintain contact with the cam.

[0019] The present invention provides a screening component for separating materials. The screening component includes a screen, the main function of which is to separate particles of different sizes in the material based on a specific aperture size. An anti-clogging component 3 is used to prevent the screening component from malfunctioning due to material blockage of the screen apertures during the screening process. The anti-clogging component 3 includes a mounting base 31, a lifting structure, and a striking part 34. The mounting base 31 provides a stable mounting foundation for the lifting structure and the striking part 34, ensuring sufficient stability when performing striking and lifting actions. The lifting structure drives the striking part 34 to move vertically, allowing it to be lifted to a certain height before striking the screen. The striking part 34 is the component that directly acts on the screen, striking the screen under the drive of the lifting structure to eject impurities blocked in the screen apertures, thus preventing screen blockage. The screening device provided by this utility model can promptly remove impurities from the screen holes by setting the anti-clogging component 3, preventing screen blockage and ensuring the continuity and screening efficiency of the screening device in the screening process. At the same time, it avoids the tedious operation of manually cleaning the screen holes periodically after the device is shut down, thereby reducing maintenance costs and improving the automation level and production efficiency of the screening device. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of the screening device according to an embodiment of the present invention is shown;

[0022] Figure 2 It shows Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 A schematic diagram of the overall structure of the fine sieve box of the screening device according to an embodiment of the present invention is shown;

[0024] Figure 4 A cross-sectional view of the tapping component of the screening device according to an embodiment of the present invention is shown; and

[0025] Figure 5 A schematic diagram of the overall structure of the gripper of the screening device according to an embodiment of the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 1. Coarse screening box; 12. Coarse screen; 14. Pulley; 15. First chute; 16. First discharge gate; 2. Fine screening box; 21. Second feed inlet; 23. Support; 24. Limiting block; 25. Second slider; 26. Second discharge gate; 27. Fine screen; 28. Second connecting part; 29. ​​Elastic element; 3. Anti-blocking component; 31. Mounting base; 311. Unlocking groove; 312. Through hole; 321. Electromagnetic slide rail; 322. First slider; 332. Gripper; 3320. First gripper; 3321 3322. Second gripper; 3323. Clamping space; 3324. Snap-fit ​​part; 3325. First tensioning section; 3326. Second tensioning section; 3327. Fixing part; 3328. First guide slope; 3329. Second guide slope; 334. Limiting part; 34. Striking part; 342. First connecting part; 343. Protrusion; 4. Third driving part; 41. Rotating shaft; 42. Pulley transmission mechanism; 5. Crank-connecting rod mechanism; 6. Cam; 7. Frame structure; 71. Storage tank; 72. Second slide groove; 73. Guide part. Detailed Implementation

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] See also Figures 1 to 5As shown, this utility model provides a screening device, which includes a screening component and an anti-clogging component 3. The screening component includes a screen, and the anti-clogging component 3 includes a mounting base 31, a lifting structure and a striking part 34. The lifting structure and the striking part 34 are disposed in the mounting base 31, and the lifting structure and the striking part 34 are drivenly connected. The striking part 34 can strike the screen.

[0030] In the above technical solution, the screening component is used to separate materials. The screening component includes a screen, the main function of which is to separate particles of different sizes in the material according to a specific aperture size. The anti-clogging component 3 is used to prevent the screening component from malfunctioning due to material clogging of the screen apertures during the screening process. The anti-clogging component 3 includes a mounting base 31, a lifting structure, and a striking part 34. The mounting base 31 provides a stable mounting foundation for the lifting structure and the striking part 34, ensuring sufficient stability when performing striking and lifting actions. The lifting structure drives the striking part 34 to move vertically, allowing the striking part 34 to be lifted to a certain height before striking the screen. The striking part 34 is the component that directly acts on the screen. By striking the screen under the drive of the lifting structure, it ejects impurities clogging the screen apertures, preventing screen clogging. The screening device provided by this utility model can promptly remove impurities from the screen holes by setting the anti-clogging component 3, preventing screen blockage and ensuring the continuity and screening efficiency of the screening device in the screening process. At the same time, it avoids the tedious operation of manually cleaning the screen holes periodically after the device is shut down, thereby reducing maintenance costs and improving the automation level and production efficiency of the screening device.

[0031] In one embodiment, the lifting structure includes a first driving part and a locking part. The first driving part is disposed on the mounting base 31, and the locking part is disposed inside the mounting base 31. The first driving part and the locking part are drivenly connected. The first driving part can drive the striking part 34 to move upward within the mounting base 31 through the locking part.

[0032] In the above technical solution, the first driving unit can drive the striking part 34 to perform lifting motion through the locking part. The first driving unit typically includes a power device such as a motor, cylinder, or hydraulic cylinder. The function of the locking part is to connect the first driving unit and the striking part 34, ensuring that the striking part 34 is locked during the lifting process, preventing the striking part 34 from accidentally falling when it is lifted to a specific height, thereby ensuring the accuracy and force of the striking action.

[0033] In one embodiment, the first driving unit includes an electromagnetic slide rail 321 and a first slider 322. The electromagnetic slide rail 321 is disposed in the mounting base 31, and the first slider 322 is disposed on the electromagnetic slide rail 321. The electromagnetic slide rail 321 and the first slider 322 are drivenly connected, and a locking part is disposed on the first slider 322.

[0034] In the above technical solution, the electromagnetic slide rail 321 is a device that uses electromagnetic force to drive a slider to move along a track. The electromagnetic slide rail 321 provides driving force for the first slider 322 mounted on the electromagnetic slide rail 321, enabling the first slider 322 to move along the electromagnetic slide rail 321. When the electromagnetic slide rail 321 extends vertically, it drives the first slider 322 and the locking part and striking part 34 mounted on the first slider 322 to move vertically, thereby realizing the upward movement of the striking part 34. The first slider 322 is mounted on the electromagnetic slide rail 321, and through the electromagnetic force between the first slider 322 and the electromagnetic slide rail 321, the first slider 322 can move linearly along the electromagnetic slide rail 321. The locking part connects the striking part 34 and the first slider 322. When it is necessary to strike the screen to prevent clogging, the locking part locks the striking part 34. This locking connection typically includes electromagnetic adsorption locking or gripper locking. Then, the first slider 322 moves upward along the electromagnetic rail 321 under the electromagnetic force, thereby raising the striking part 34 until it reaches a designated height. Subsequently, the electromagnetic rail 321 releases its electromagnetic control over the first slider 322, causing it to descend rapidly under gravity, thus striking the screen with the striking part 34. Alternatively, the electromagnetic rail 321 maintains its electromagnetic control over the first slider 322, and the locking part releases its lock on the striking part 34, causing it to descend rapidly under gravity and strike the screen. Alternatively, the electromagnetic slide rail 321 maintains electromagnetic control over the first slider 322, while the locking part maintains the locking of the striking part 34. The electromagnetic slide rail 321 drives the first slider 322 to accelerate downward movement towards the screen, thereby driving the striking part 34 to strike the screen.

[0035] In one embodiment of the present invention (not shown), the locking part includes an electromagnetic adsorption member, the first driving part is drivenly connected to the electromagnetic adsorption member, and the striking part 34 is magnetically adsorbed onto the electromagnetic adsorption member.

[0036] In the above technical solution, an electromagnetic adsorption component is used as the locking part. When the electromagnetic adsorption component is energized, the striking part 34, which is made of magnetic material or has magnetic components, will be adsorbed onto the electromagnetic adsorption component. Then, the first driving part drives the electromagnetic adsorption component to rise to a specified height, thereby driving the striking part 34 to rise stably. When it is necessary to release the striking part, the power supply of the electromagnetic adsorption component is disconnected so that the magnetic field of the electromagnetic adsorption component disappears, and the striking part 34 can be released from the electromagnetic adsorption component, thereby unlocking the striking part 34. The striking part 34 falls freely onto the screen under the action of gravity to strike.

[0037] In one embodiment of the present invention (not shown), the locking part includes a gripper 332 and a second driving part. The gripper 332 and the second driving part are disposed on the first slider 322, and the second driving part is drivenly connected to the gripper 332.

[0038] In the above technical solution, a gripper 332 is used as the locking part. The gripper, through a mechanical structure, can switch between gripping and locking and releasing and unlocking, thereby realizing the gripping and releasing of the striking part. The second drive part is usually an electric motor, a cylinder, or a hydraulic cylinder. The second drive part is driven and connected to the gripper 332. It is mainly used to drive the gripper to perform opening and closing actions and to control the timing and speed of opening and closing, thereby ensuring that the gripper 332 can lock or release the striking part at a designated position. The gripper 332 and the second drive part are set on the first slider 322. The first slider 322 drives the gripper 332 and the second drive part to achieve lifting and lowering movements, thereby driving the striking part to lift and lower.

[0039] In one embodiment, the locking part includes a gripper 332, which includes a gripper portion and an unlocking portion. A rotating shaft is provided on the first slider 322, and the gripper portion and the unlocking portion are hinged on the rotating shaft. The gripper portion is located on the first side of the rotating shaft facing the striking part 34, and the unlocking portion is located on the second side of the rotating shaft away from the striking part 34. An elastic tensioning portion is provided on the gripper 332, and the inner side of the gripper portion is a clamping space 3322. The elastic tensioning portion can pull the gripper portion into the clamping space 3322. An unlocking groove 311 is provided on the top of the mounting base 31. When the gripper 332 is in the clamping state, the gripper portion clamps the striking part 34. The unlocking portion can retract under the action of the unlocking groove 311, so that the gripper portion opens and releases the gripper portion from the striking part 34.

[0040] In the above technical solution, the gripper portion is used to directly contact and clamp the striking part 34. The unlocking part is located on the second side of the gripper and is hinged to the gripper portion via a pivot. The unlocking part is mainly used to cooperate with the unlocking groove 311, so that the unlocking part retracts under the action of the unlocking groove 311, causing the gripper portion hinged to the unlocking part to open, thereby releasing the striking part 34 and realizing the unlocking and release of the striking part 34 by the gripper. An elastic tensioning part, such as a spring or elastic rope, is used to pull the gripper portion into the clamping space 3322 when the gripper is in the unlocked state, ensuring that the gripper portion can be in the ready position to clamp the striking part 34. When the gripper is in the clamping state, the elastic tensioning part pulls the gripper portion into the clamping space 3322, ensuring that the gripper portion can firmly clamp the striking part 34, improving the reliability of the clamping and locking of the striking part 34. The unlocking groove 311 is used to guide the unlocking part to retract, thereby causing the gripper part to open and releasing the striking part 34 to strike.

[0041] In one embodiment, the gripper portion is provided with a snap-fit ​​portion 3324, which extends into the clamping space 3322. The end of the snap-fit ​​portion 3324 away from the gripper 332 is provided with a first guide slope 3328, and the striking portion 34 is provided with a snap-fit ​​groove. When the gripper 332 is in the clamping state, the snap-fit ​​portion 3324 is snapped and fixed with the snap-fit ​​groove.

[0042] In the above technical solution, the locking part 3324 extends into the locking groove when the gripper part holds the striking part 34. The locking engagement between the locking part 3324 and the locking groove achieves the gripping and locking of the striking part 34 by the gripper part. The first guide slope 3328, located at the end of the locking part 3324 away from the gripper 332, mainly provides guidance for the locking part 3324 when it engages with the gripper part, allowing it to slide smoothly into the locking groove of the striking part 34. This reduces collisions and friction during engagement, lowers equipment wear, and improves operational efficiency and safety. The locking groove on the striking part 34 is designed to cooperate with the locking part 3324 of the gripper part to form a stable mechanical lock.

[0043] In one embodiment, the gripper 332 includes a first gripper 3320 and a second gripper 3321, which are rotatably disposed on the first slider 322. The first gripper 3320 and the second gripper 3321 are disposed opposite to each other. The elastic tensioning part includes a first tensioning section 3325 and a second tensioning section 3326. A fixing part 3327 is provided on the first slider 322. The inner side of the gripper part is a clamping space 3322, and the fixing part 3327 is disposed in the clamping space 3322. One end of the first tensioning section 3325 is connected to the first gripper 3320, and the other end is connected to the fixing part 3327. One end of the second tensioning section 3326 is connected to the fixing part 3327, and the other end is connected to the second gripper 3321.

[0044] In the above technical solution, the first gripper 3320 and the second gripper 3321 together constitute gripper 332. The first gripper 3320 and the second gripper 3321 are rotatably mounted on the first slider 322 and are arranged opposite to each other to form a clamping space 3322. When the gripper 332 clamps the striking part, the gripping portions of the first gripper 3320 and the second gripper 3321 are pulled into the clamping space under the action of the elastic tensioning portion, thereby achieving a stable clamping of the striking part. The fixing part is set on the first slider 322. One end of the tensioning section is set on the fixing part, and the other end is connected to the gripper. Thus, the fixing part provides the installation position and support force for the first tensioning section 3325 and the second tensioning section 3326. When the unlocking part of the gripper is withdrawn from the unlocking groove, the gripper part is pulled towards the clamping space under the elastic force of the tensioning section. This achieves the effect of the gripper parts of the first gripper 3320 and the second gripper 3321 closing towards the clamping space. In this process, compared with using a whole elastic tensioning part to directly connect the first gripper 3320 and the second gripper 3321, this technical solution divides the elastic tensioning part into two tensioning sections and connects one end of the tensioning section to the fixing part 3327. This ensures that the grippers on both sides of the fixing part 3327 are subjected to more uniform force, thereby improving the stability and accuracy of the gripper reset movement and reducing the gripper skew or jamming caused by uneven force.

[0045] In one embodiment, the outer surface of the unlocking part is provided with a second guide slope 3329, and the distance between the second guide slopes 3329 on the outer surface of the unlocking part first increases and then decreases in the direction away from the rotating axis.

[0046] In the above technical solution, the second guide slope 3329 is used to cooperate with the unlocking groove 311 to close the unlocking part of the gripper, thereby opening the gripper part that is hinged to the unlocking part, realizing the unlocking of the gripper on the striking part 34, so that the striking part 34 can fall onto the screen surface under the action of gravity to strike the screen. When the first slider 322 drives the gripper to rise, the second guide slope 3329 on the outer surface of the unlocking part comes into contact with the unlocking groove 311. The gripper continues to rise. As the distance between the second guide slopes 3329 on the outer surface of the unlocking part first increases and then decreases in the direction away from the rotating axis, the unlocking groove 311 forms a horizontal component force toward the clamping space 3322 and a vertical component force that prevents the gripper from rising further. Under the action of the horizontal component force, the unlocking part moves toward the clamping space 3322, achieving the effect of closing the unlocking part. This causes the gripper part hinged to the unlocking part to open, thereby unlocking the striking part 34. The striking part 34 can then fall onto the screen surface under the action of gravity to strike the screen.

[0047] In one embodiment, the striking part 34 is provided with a first connecting part 342 and a protrusion 343. The first connecting part 342 is disposed on the top of the striking part 34, and the protrusion 343 is disposed on the top of the first connecting part 342. A snap-fit ​​groove is formed between the protrusion 343 and the striking part 34.

[0048] In the above technical solution, the first connecting part 342 is used to connect the protrusion 343 and the striking part 34. A locking groove is formed between the protrusion 343 and the striking part 34. When the gripper clamps the striking part 34, the first guide slope 3328 of the gripper part contacts the protrusion 343. The elastic tensioning part always pulls the gripper part into the clamping space 3322. As the gripper continues to descend, the protrusion 343 pushes the gripper part open along the first guide slope 3328 until the protrusion 343 and the first guide slope 3328 disengage. The elastic tensioning part pulls the locking part 3324 on the gripper into the clamping space 3322, so that the locking part 3324 enters the locking groove between the protrusion 343 and the striking part 34, thereby realizing the locking and locking connection of the gripper to the striking part 34.

[0049] In one embodiment, a first guide ramp 3328 is disposed on the protrusion 343.

[0050] In the above technical solution, when the gripper clamps the striking part 34, the locking part 3324 of the gripper contacts the first guide slope 3328 on the protrusion 343. The elastic tensioning part always pulls the gripper into the clamping space 3322. As the gripper continues to descend, the locking part 3324 moves outward along the first guide slope 3328, thereby causing the gripper to open until the protrusion 343 and the first guide slope 3328 disengage. The elastic tensioning part then pulls the locking part 3324 on the gripper into the clamping space 3322, so that the locking part 3324 enters the locking groove between the protrusion 343 and the striking part 34, thereby realizing the locking and locking connection of the gripper to the striking part 34.

[0051] In one embodiment, the bottom of the mounting base 31 is provided with a through hole 312, through which the striking part 34 can pass to strike the screen.

[0052] In the above technical solution, the mounting base 31 serves as the mounting foundation for the striking assembly, supporting and accommodating other structures of the striking assembly, and also guiding and restricting the movement of the striking part 34. The hole 312 allows the striking part to pass through the mounting base 31 and directly strike the screen when it falls, improving the anti-clogging effect of the striking action.

[0053] In one embodiment, the screening device further includes a third drive unit 4 and a reciprocating motion mechanism. One end of the reciprocating motion mechanism is driven to the third drive unit 4, and the other end is connected to the screening component. The third drive unit 4 can drive the reciprocating motion mechanism to drive the screening component to perform reciprocating motion.

[0054] In the above technical solution, the third drive unit 4 is typically a motor, cylinder, hydraulic cylinder, or other power source, and its main function is to provide power to the reciprocating motion mechanism. The reciprocating motion mechanism usually includes a crank-slider mechanism, a connecting rod mechanism, or a gear and rack mechanism. The reciprocating motion mechanism is mainly used to convert the driving force of the third drive unit 4 into linear reciprocating motion, thereby driving the screening components to vibrate, so that the material can pass through the screen holes more smoothly and improve the screening efficiency.

[0055] In one embodiment, the screening device further includes a frame structure 7, a third drive unit 4 is disposed within the frame structure 7, and the screening assembly includes a coarse screen box 1, which is slidably disposed on the top of the frame structure 7. The output end of the third drive unit 4 is provided with a rotating shaft 41, and the third drive unit 4 is drivenly connected to the rotating shaft 41. A pulley transmission mechanism 42 is provided on the rotating shaft 41, and the driving wheel of the pulley transmission mechanism 42 is sleeved on the rotating shaft 41 and fixedly connected to the rotating shaft 41. The output end of the pulley transmission mechanism 42 is provided with a crank-connecting rod mechanism 5, and the output end of the crank-connecting rod mechanism 5 is connected to the coarse screen box 1.

[0056] In the above technical solution, the frame structure 7 serves as the supporting structure for the entire screening device, and its main function is to provide a stable installation platform. The third drive unit 4 typically includes a motor or other drive device to provide power for the vibration of the screening components. The pulley transmission mechanism 42 is used to transmit the driving force. By setting the pulley transmission mechanism 42, the power of the third drive unit 4 can be transmitted to the crank-connecting rod mechanism 5 located above the third drive unit 4. The crank-connecting rod mechanism 5 is a mechanical device that converts rotary motion into reciprocating linear motion. The crank of the crank-connecting rod mechanism 5 is connected to the driven wheel of the pulley transmission mechanism, and the rocker arm is connected to the coarse screen box 1, thereby converting the rotary motion of the driven wheel of the pulley transmission mechanism into the reciprocating vibration of the coarse screen box 1, thereby improving the screening efficiency and effect of the coarse screen box 1, while reducing the risk of screen hole clogging.

[0057] In one embodiment, the screening assembly further includes a fine screen box 2, which is slidably disposed on the side of the frame structure 7. A first discharge port is provided on the side of the coarse screen box 1, and the fine screen box 2 is located on the same side as the first discharge port. A cam 6 is provided at the end of the rotating shaft 41 away from the third drive part 4. The cam 6 contacts the side of the fine screen box 2. A second reset member is provided on the other side of the fine screen box 2 away from the cam 6. A pulley 14 is provided at the bottom of the fine screen box 2.

[0058] In the above technical solution, the fine screening box 2 is used to further screen the material screened by the coarse screening box 1. The fine screening box 2 is usually equipped with a screen with a finer aperture, thereby improving the removal of fine particulate impurities still mixed in the material after coarse screening. The coarse screening box 1 has a first discharge port on its side and is located on the same side as the fine screening box 2, so that the material after coarse screening can be discharged from the first discharge port and enter the fine screening box 2, reducing material waste caused by scattering during the transfer process. The cam 6 is located at the end of the rotating shaft 41 away from the third drive unit 4 and contacts the side of the fine screening box 2. When the third drive unit 4 drives the rotating shaft 41 to rotate, the rotating shaft 41 drives the cam 6 to rotate, causing the fine screening box 2 to produce periodic reciprocating motion along the contour of the cam 6, causing the fine screening box 2 to vibrate. A second reset member is provided on the side of the fine screen box 2 away from the cam 6. The second reset member typically includes a spring or rubber component. When the cam 6 rotates to a position where it disengages from the fine screen box 2, the second reset member can push the fine screen box 2 back to a position where the side of the fine screen box 2 always remains in contact with the surface of the cam 6. This ensures that the fine screen box 2 can perform continuous reciprocating linear motion according to the change in the outer contour shape of the cam 6, thereby achieving vibration of the fine screen box 2. The pulley 14 is located at the bottom of the fine screen box 2, so that the fine screen box 2 contacts the ground through the pulley 14 during reciprocating linear motion, thereby reducing the friction between the fine screen box 2 and the ground and avoiding wear and energy loss caused by excessive friction.

[0059] In one embodiment, the second reset member includes a second connecting portion 28 and an elastic member 29. The second connecting portion 28 is disposed on the frame structure 7 and extends toward the side of the fine screen box 2 away from the cam 6. The elastic member 29 is disposed on the second connecting portion 28 and can push the fine screen box 2 to always keep in contact with the cam 6.

[0060] In the above technical solution, the second reset member is used to push the fine screen box 2 so that the side of the fine screen box 2 always remains in contact with the surface of the cam 6, ensuring that the fine screen box 2 can reciprocate linearly according to the change of the outer contour shape of the cam 6. The second connecting part 28 is mainly used to provide a base for the installation and fixation of the elastic member 29. The elastic member 29 is usually made of spring, rubber block or other elastic material. The elastic member 29 is set on the second connecting part 28 and can generate a thrust on the fine screen box 2 in the direction of the cam 6, ensuring that the fine screen box 2 and the cam 6 always remain in contact. When the cam 6 rotates, it pushes the fine screen box 2 to move away from the cam 6. At this time, the fine screen box 2 compresses the elastic member 29, causing the elastic member 29 to accumulate elastic potential energy. When the cam 6 rotates to the position where it is no longer in contact with the side of the fine screen box 2, the elastic member 29 converts the elastic potential energy into kinetic energy under the action of its own elastic properties, thereby quickly pushing the fine screen box 2 towards the cam 6, so that the fine screen box 2 and the cam 6 are in contact again. The second reset member, through the pushing action of the elastic member 29, ensures the continuity of vibration of the fine screen box 2 and prevents the vibration from being interrupted during the screening process.

[0061] In one embodiment, the coarse screening box 1 has a first feed inlet 11 at the top, a coarse screen 12 at the bottom, a first discharge outlet on the side, a pulley 14 at the bottom, and a first sliding groove 15 on the top edge of the frame structure 7, with the pulley 14 sliding along the first sliding groove 15.

[0062] In the above technical solution, the first feed inlet 11 provides an entrance for carnallite ore to enter the coarse screening box 1. The coarse screen 12 is located at the bottom of the coarse screening box 1, and its main function is to coarsely screen the carnallite ore entering the coarse screening box 1. The aperture of the coarse screen 12 is larger than that of the fine screen 27, which can quickly remove materials and impurities that do not meet the size requirements, improve the initial screening efficiency of the material, and reduce the burden on the fine screening box 2. The first discharge port is set on the side of the coarse screening box 1 and is used to discharge qualified material after coarse screening. The pulley 14 is set at the bottom of the coarse screening box 1, so that when the coarse screening box 1 reciprocates linearly, it contacts the frame structure 7 through the pulley 14, avoiding direct contact between the coarse screening box 1 and the frame structure 7, thereby reducing the friction between the coarse screening box 1 and the frame structure 7 and avoiding wear caused by excessive friction. The first chute 15 mainly serves to limit the pulley 14, ensuring that the coarse screening box 1 reciprocates along the direction guided by the first chute 15, preventing the coarse screening box 1 from shifting or misaligning during vibration, and improving the structural stability of the screening device.

[0063] In one embodiment, a storage trough 71 is provided on the frame structure 7. The storage trough 71 is located below the coarse screen box 1, and the receiving range of the storage trough 71 is greater than or equal to the reciprocating motion range of the coarse screen box 1.

[0064] In the above technical solution, the storage tank 71 is mainly used to collect impurities and unqualified materials screened out by the coarse screen box 1. By setting up the storage tank 71, the screened impurities can be continuously collected, significantly reducing the frequency of downtime for impurity treatment, thereby improving the continuity and efficiency of the screening operation. The storage tank 71 is located below the coarse screen box 1, and its receiving range is greater than or equal to the reciprocating motion range of the coarse screen box 1, ensuring that larger particle impurities or unqualified materials separated during the coarse screening process can be completely collected, avoiding material loss and environmental pollution caused by impurities and unqualified materials scattering outside the device.

[0065] In one embodiment, a second feed inlet 21 is provided on the fine sieve box 2, which is connected to the first discharge outlet. A fine screen 27 is provided at the bottom of the fine sieve box 2, and the fine sieve box 2 is connected to the outside through the mesh of the fine screen 27. A second discharge outlet is provided on the side of the fine sieve box 2.

[0066] In the above technical solution, the second feed inlet 21 provides an entrance for the material that has passed the primary screening into the fine screening box 2. The second feed inlet 21 is connected to the first discharge outlet, allowing the material that has passed the primary screening to directly enter the fine screening box 2 through the second feed inlet 21 after being discharged from the first discharge outlet, thereby reducing material loss during the transfer process. The fine screen 27 is located at the bottom of the fine screening box 2. The screen aperture size of the fine screen 27 is smaller than that of the coarse screen 12, enabling more precise screening of materials and removing tiny impurities still trapped in the material after primary screening. The fine screening box 2 is connected to the outside through the mesh of the fine screen 27, allowing the tiny impurities screened out by the fine screening box 2 to be discharged into the next processing stage or a collection container. The second discharge outlet is used to discharge the qualified material after being screened by the fine screen 27. Through the coordinated work of the above components, the fine screening box 2 can effectively complete the secondary screening, ensuring the acquisition of high-quality carnallite ore.

[0067] In one embodiment, a support member 23 is provided at the bottom of the fine screen 27, and a limiting block 24 is provided at the bottom of the fine screen box 2. A through hole is provided on the limiting block 24, and the support member 23 passes through the through hole.

[0068] In the above technical solution, the support member 23 provides stable support for the fine screen 27, ensuring that the fine screen 27 does not undergo unnecessary displacement or deformation during vibration screening. The limiting block 24 is used to install and limit the support member 23. The limiting block 24 is provided with a through hole for accommodating and fixing the support member 23, ensuring that the support member 23 can be installed on the limiting block 24. When it is necessary to perform a tapping operation on the fine screen 27, the support member 23 is pulled out from the limiting block 24, and then the fine screen 27 is tapped. At this time, since the fine screen 27 loses the support of the support member 23, the tapping part 34 can cause a greater elastic deformation to the fine screen 27, thereby enabling the fine screen 27 to rebound with a greater amplitude and eject the impurities clogging the screen holes, thus improving the anti-clogging and cleaning effect.

[0069] In one embodiment, the frame structure 7 is provided with a second slide groove 72 on the side facing the fine screen box 2, and a second slider 25 is provided on the fine screen box 2. The second slider 25 extends into the second slide groove 72 and slides along the second slide groove 72.

[0070] In the above technical solution, the second slide groove 72 is used to provide a guide track for the vibration of the fine screen box 2. The second slider 25 on the fine screen box 2 extends into the second slide groove 72 and slides along the second slide groove 72. Through the cooperation of the second slide groove 72 and the second slider 25, the vibration direction of the fine screen box 2 is restricted, thereby improving the stability of the fine screen box 2 in the vibration screening process.

[0071] In one embodiment, a material guide 73 is provided on the frame structure 7, which can guide the material discharged from the first discharge port to the second inlet 21.

[0072] In the above technical solution, the main function of the material guiding part 73 is to guide the qualified material screened from the coarse screen box 1 from the first discharge port to the second inlet 21 of the fine screen box 2, thereby improving the accuracy and efficiency of material transfer and reducing material loss and environmental pollution risks during the transfer process.

[0073] In one embodiment, a first discharge gate plate 16 is provided on the first discharge port.

[0074] In the above technical solution, the first discharge gate 16 can be opened or closed to control the timing of the material after coarse screening being discharged from the first discharge port of the coarse screening box 1. During the vibratory screening process in the coarse screening box 1, the first discharge gate 16 is in a closed state to prevent the material from falling out of the coarse screening box 1 from the first discharge port during the screening process. After the vibratory screening is completed, the first discharge gate 16 is opened to ensure that the screened material can be discharged from the coarse screening box 1 through the first discharge port.

[0075] In one embodiment, a second discharge gate plate 26 is provided on the second discharge port.

[0076] In the above technical solution, the second discharge gate 26 can be opened or closed to control the timing of the material after fine screening being discharged from the fine screening box 2 through the second discharge port. During the vibrating screening process in the fine screening box 2, the second discharge gate 26 is in the closed state to prevent the material from falling out of the fine screening box through the second discharge port during the screening process. After the vibrating screening is completed, the second discharge gate 26 is opened to ensure that the screened material can be discharged from the fine screening box 2 through the second discharge port.

[0077] In one embodiment, a limiting part 334 is also provided on the first slider 322. The limiting part 334 is disposed in the clamping space 3322 and can maintain a preset opening between the first gripper 3320 and the second gripper 3321.

[0078] In the above technical solution, an elastic tensioning part is provided between the first gripper 3320 and the second gripper 3321. The elastic tensioning part pulls the gripper part towards the clamping space 3322. The limiting part 334 is provided on the side of the gripper part facing the clamping space 3322. During the process of the elastic tensioning part pulling the gripper part towards the clamping space 3322, the gripper part comes into contact with the limiting part 334. Under the obstruction of the limiting part 334, the gripper part cannot move further towards the clamping space 3322, thereby realizing the stopping and limiting function of the limiting part 334 on the gripper part, ensuring that the gripper part maintains the preset opening, even if the first guide slope 33 on the gripper part... 28 Aligns the opening of the edge of the striking part 34 to ensure that when the gripper descends to clamp the striking part 34, the first guide slope 3328 can contact the edge of the striking part 34, so that the gripper can open smoothly under the guidance of the first guide slope 3328. This avoids the problem that the gap between the first gripper 3320 and the second gripper 3321 is too small, causing the locking part 3324 to directly hit the striking part 34 and damage the locking part 3324 and the striking part 34, and that the locking part 3324 cannot smoothly enter the locking groove under the guidance of the first guide slope 3328 to achieve the locking and fixing of the locking part 3324 and the locking groove.

[0079] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: The screening component is used to separate materials. The screening component includes a screen, the main function of which is to separate particles of different sizes in the material according to a specific aperture size. The anti-clogging component 3 is used to prevent the screening component from malfunctioning due to material clogging of the screen holes during the screening process. The anti-clogging component 3 includes a mounting base 31, a lifting structure, and a striking part 34. The mounting base 31 provides a stable mounting foundation for the lifting structure and the striking part 34, ensuring sufficient stability when performing striking and lifting actions. The lifting structure drives the striking part 34 to move vertically, allowing the striking part 34 to be lifted to a certain height before striking the screen. The striking part 34 is a component that directly acts on the screen. By striking the screen under the drive of the lifting structure, it ejects impurities clogging the screen holes, preventing screen clogging. The screening device provided by this utility model can promptly remove impurities from the screen holes by setting the anti-clogging component 3, preventing screen blockage and ensuring the continuity and screening efficiency of the screening device in the screening process. At the same time, it avoids the tedious operation of manually cleaning the screen holes periodically after the device is shut down, thereby reducing maintenance costs and improving the automation level and production efficiency of the screening device.

[0080] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0081] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A screening device, characterized in that, It includes a screening component and an anti-clogging component (3). The screening component includes a screen, and the anti-clogging component (3) includes a mounting base (31), a lifting structure and a striking part (34). The lifting structure and the striking part (34) are disposed in the mounting base (31). The lifting structure is driven to connect with the striking part (34), and the striking part (34) can strike the screen.

2. The screening device of claim 1, wherein, The lifting structure includes a first driving part and a locking part. The first driving part is disposed on the mounting base (31), and the locking part is disposed inside the mounting base (31). The first driving part is drivenly connected to the locking part, and the first driving part can drive the striking part (34) to move upward within the mounting base (31) through the locking part.

3. The screening device of claim 2, wherein, The first driving unit includes an electromagnetic slide rail (321) and a first slider (322). The electromagnetic slide rail (321) is disposed in the mounting base (31), and the first slider (322) is disposed on the electromagnetic slide rail (321). The electromagnetic slide rail (321) is drivenly connected to the first slider (322), and the locking unit is disposed on the first slider (322).

4. The screening device of claim 2, wherein, The locking part includes an electromagnetic adsorption component, the first driving part is drivenly connected to the electromagnetic adsorption component, and the striking part (34) is magnetically adsorbed on the electromagnetic adsorption component.

5. The screening device of claim 3, wherein, The locking part includes a gripper (332) and a second driving part. The gripper (332) and the second driving part are disposed on the first slider (322), and the second driving part is drivenly connected to the gripper (332).

6. The screening device of claim 3, wherein, The locking part includes a gripper (332), which includes a gripper portion and an unlocking portion. A rotating shaft is provided on the first slider (322). The gripper portion and the unlocking portion are hinged on the rotating shaft. The gripper portion is located on the first side of the rotating shaft facing the striking part (34), and the unlocking portion is located on the second side of the rotating shaft away from the striking part (34). An elastic tensioning portion is provided on the gripper (332). The inner side of the gripper portion is a clamping space (3322). The elastic tensioning portion can pull the gripper portion into the clamping space (3322). An unlocking groove (311) is provided on the top of the mounting base (31). When the gripper (332) is in the clamping state, the gripper portion clamps the striking part (34). The unlocking portion can retract under the action of the unlocking groove (311), causing the gripper portion to open and thereby releasing the gripper portion from clamping the striking part (34).

7. The screening device of claim 6, wherein, The gripper portion is provided with a locking portion (3324), which extends into the clamping space (3322). The end of the locking portion (3324) away from the gripper (332) is provided with a first guide slope (3328). The striking portion (34) is provided with a locking groove. When the gripper (332) is in the clamping state, the locking portion (3324) is locked and fixed with the locking groove.

8. The screening device of claim 6, wherein, The gripper (332) includes a first gripper (3320) and a second gripper (3321). The first gripper (3320) and the second gripper (3321) are rotatably mounted on the first slider (322). The first gripper (3320) and the second gripper (3321) are arranged opposite to each other. The elastic tensioning part includes a first tensioning section (3325) and a second tensioning section (3326). A fixing part (3327) is provided on the first slider (322). The inner side of the gripper part is a clamping space (3322). The fixing part (3327) is disposed in the clamping space (3322). One end of the first tensioning section (3325) is connected to the first gripper (3320), and the other end is connected to the fixing part (3327). One end of the second tensioning section (3326) is connected to the fixing part (3327), and the other end is connected to the second gripper (3321).

9. The screening device of claim 6, wherein, The outer surface of the unlocking part is provided with a second guide slope (3329), and the distance between the second guide slope (3329) on the outer surface of the unlocking part first increases and then decreases in the direction away from the rotating axis.

10. The screening device of claim 6, wherein, The striking part (34) is provided with a first connecting part (342) and a protrusion (343). The first connecting part (342) is disposed on the top of the striking part (34), and the protrusion (343) is disposed on the top of the first connecting part (342). A snap-fit ​​groove is formed between the protrusion (343) and the striking part (34).

11. The screening device of claim 1, wherein, The mounting base (31) has a through hole (312) at its bottom, and the striking part (34) can pass through the through hole (312) to strike the screen.

12. The screening device of claim 1, wherein, The screening device further includes a third drive unit (4) and a reciprocating motion mechanism. One end of the reciprocating motion mechanism is driven and connected to the third drive unit (4), and the other end is connected to the screening component. The third drive unit (4) can drive the reciprocating motion mechanism to drive the screening component to perform reciprocating motion.

13. The screening device of claim 12, wherein, The screening device further includes a frame structure (7), the third drive unit (4) is disposed in the frame structure (7), the screening component includes a coarse screen box (1), the coarse screen box (1) is slidably disposed on the top of the frame structure (7), the output end of the third drive unit (4) is provided with a rotating shaft (41), the third drive unit (4) is drivenly connected to the rotating shaft (41), a pulley transmission mechanism (42) is provided on the rotating shaft (41), the drive wheel of the pulley transmission mechanism (42) is sleeved on the rotating shaft (41) and fixedly connected to the rotating shaft (41), the output end of the pulley transmission mechanism (42) is provided with a crank connecting rod mechanism (5), the output end of the crank connecting rod mechanism (5) is connected to the coarse screen box (1).

14. The screening device according to claim 13, characterized in that, The screening assembly also includes a fine screen box (2), which is slidably disposed on the side of the frame structure (7). A first discharge port is provided on the side of the coarse screen box (1). The fine screen box (2) and the first discharge port are located on the same side. A cam (6) is provided at the end of the rotating shaft (41) away from the third drive unit (4). The cam (6) contacts the side of the fine screen box (2). A second reset member is provided on the other side of the fine screen box (2) away from the cam (6). A pulley (14) is provided at the bottom of the fine screen box (2).

15. The screening device of claim 14, wherein, The second reset member includes a second connecting part (28) and an elastic member (29). The second connecting part (28) is disposed on the frame structure (7) and extends toward the side of the fine screen box (2) away from the cam (6). The elastic member (29) is disposed on the second connecting part (28) and can push the fine screen box (2) to always keep in contact with the cam (6).

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