Shaking type screening device for powder forming processing

Abstract

The invention relates to the technical field of screening devices, in particular to a shaking type screening device for powder forming machining. The clean coal screening device comprises a supporting frame used for supporting the screening device, a screening assembly used for screening clean coal is arranged above the supporting frame, a conveying assembly used for conveying the clean coal into the screening assembly is arranged on one side of the screening assembly, a screening plate used for screening the clean coal is slidably connected into the screening assembly, and a shaking system is arranged on the side wall of the screening plate. The shaking system slides up and down to drive the screening plate to jolt up and down, so that the screening plate shakes and screens clean coal, shaking force is applied to the screening plate, clean coal particles which are possibly agglomerated originally can be effectively dispersed, the clean coal particles can penetrate through the screen more easily, and then the screening operation efficiency is remarkably improved. And meanwhile, the shaking is also beneficial to ensuring that clean coal particles are uniformly distributed on a screening surface, and the overall screening uniformity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to a shaking type screening device for powder forming processing. Background Art

[0002] Coal preparation is also called coal washing, which is the process of selecting clean coal that meets the quality requirements of users from raw coal. Coking coal has certain requirements for ash and sulfur content, and clean coal powder that has been washed must be used. The petrographic composition of coal and the quantity, type, nature and distribution of minerals in coal are all factors that affect the selectivity of coal. According to the difficulty of raw coal selectivity, the commonly used processes in coal preparation plants include jigging, heavy medium cyclone, heavy medium shallow tank, dynamic screen jigging, flotation, etc. Other coal preparation methods include air separation and spiral separation.

[0003] In the process of clean coal screening, there are the following problems: First, the clean coal powder flows into the screen at one time for screening, and the screening effect is poor. Even if the prior art uses the vibrating screen to reciprocate to screen the clean coal from the screen, the limited amplitude of the vibrating screen leads to limited screening intensity, resulting in some clean coal forming larger particle clusters. The size of these clusters often exceeds the aperture of the standard screen, so they are difficult to be screened out, which brings great difficulties to the screening work; Secondly, the fine particles or impurities in the clean coal powder may also become obstacles in the screening process. These fine particles and impurities may clog the pores of the screen, which will not only reduce the screening efficiency but also shorten the service life of the screen. In view of this, we propose a shaking powder molding screening device. Summary of the invention

[0004] The object of the present invention is to provide a shaking type screening device for powder forming processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides a shaking type screening device for powder forming processing, comprising a support frame for supporting the screening device, a screening assembly for screening clean coal is arranged above the support frame, and a conveying assembly for conveying clean coal into the screening assembly is arranged on one side of the screening assembly, a screening plate for screening clean coal is slidably connected inside the screening assembly, and a shaking system is arranged on the side wall of the screening plate; The shaking system is used to drive the screening plate to bump up and down by sliding up and down, so that the screening plate can shake and screen the clean coal; A cleaning component for cleaning the screening plate is provided on the lower side of the shaking system; When the cleaning component slides to the top through the shaking system, the cleaning component penetrates the sieve plate to dredge and clean the internal holes of the sieve plate.

[0006] As a further improvement of the present technical solution, the conveying assembly includes a spirally designed feeding rod, one end of which is fixedly connected to a motor, and the upper side of the feeding rod is a feeding port.

[0007] As a further improvement of the technical solution, the motor drives the feeding rod to rotate by rotating the output end, and the side wall of the motor is fixedly connected to the side wall of the support frame.

[0008] As a further improvement of the present technical solution, the screening assembly also includes a screening bin, the lower side of which is fixedly connected to the support frame, the lower side of the screening bin is provided with a discharge port, the side wall is provided with a slide groove, a slider is slidably connected in the slide groove, one side of the slider is fixed to the screening plate, so that the screening plate slides up and down inside the screening bin.

[0009] As a further improvement of the technical solution, a first spring is fixedly connected to the upper side of the sliding block and the upper side of the inner wall of the sliding groove.

[0010] As a further improvement of the technical solution, one end of the feeding rod close to the screening bin is fixedly connected to a transmission rod, the other end of the transmission rod is fixedly connected to a disc, and the eccentric portion of the disc is rotatably connected to a rotating rod.

[0011] As a further improvement of the technical solution, the contraction-type shaking system includes a slide rail that slides up and down inside the screening bin, the upper end of the slide rail is rotatably connected to the outer wall of the rotating rod by a connecting rod, and the inside of the slide rail is slidably connected to a sliding rod; The outer wall of the slide rail is fixedly connected to the U-shaped plate, and a plurality of second springs are evenly fixed to the inner wall of the U-shaped plate. The other ends of the plurality of second springs are fixedly connected to a stopper, and the stopper penetrates the side wall of the slide rail and slides inside the side wall.

[0012] As a further improvement of the technical solution, when the slide rod slides inside the slide rail, it is in continuous contact with the block, and the contact surface between the slide rod and the block is an inclined surface. One side of the retractable slide rod is fixedly connected to the screening plate and is arranged opposite to the slider.

[0013] As a further improvement of the technical solution, the stiffness coefficient of the second spring is greater than the stiffness coefficient of the first spring.

[0014] As a further improvement of the present technical solution, the cleaning assembly includes a bottom frame fixed to the lower end of the slide rail, a plurality of bottom plates are fixed to the inner wall of the bottom frame, a needle bar is fixed above each bottom plate, the positions of the needle bars correspond one-to-one to the holes of the screen plate, and the inner diameter of the needle bar is the same as the inner diameter of the holes of the screen plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the shaking powder forming processing screening device, the conveying component is not only conducive to the dispersion of particle clusters during the material conveying process, but also allows the material to gradually fall onto the screening component for screening. At the same time, the screening component and the cleaning component move back and forth up and down synchronously with the movement of the conveying component, which not only meets the screening and dredging functions, but also can further break up the particle clusters.

[0016] 2. In the screening device of the shaking powder forming processing, since one end of the screening plate is supported and restricted by the first spring, and the other end is supported and fluctuated by the block, under the premise that the stiffness coefficient of the second spring is greater than the stiffness coefficient of the first spring, when the shaking system moves upward as a whole, the force of the block lifting the other end of the screening plate upward is greater than the elastic force of the first spring, so that the end of the screening plate close to the block moves upward and tilts, as the material is conveyed in, under the action of the gravity of the material, one end of the screening plate slides from the inclined surface of the baffle and falls onto the next baffle for support. At this time, the end of the screening plate close to the baffle moves downward and tilts. With the reciprocating movement, the screening plate not only shakes, but also tilts back and forth, so that the material dropped on the screening plate is evenly dispersed and the screening intensity is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the conveying assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the screening assembly of the present invention; Figure 4 It is a schematic diagram of the local structure of the screening assembly of the present invention; Figure 5 For the present invention Figure 3 A is an enlarged structural diagram; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in FIG. Figure 7 For the present invention Figure 2 The enlarged structural diagram at C in FIG. Figure 8 This is a schematic diagram of clean coal flow when the present invention is working.

[0018] The meaning of each number in the figure is: 101, support frame; 200, conveying assembly; 300, screening assembly; 310, shaking system; 400, cleaning assembly; 201, motor; 202, feeding rod; 203, feeding port; 204, discharging port; 301, screening bin; 302, screening plate; 303, transmission rod; 304, disc; 305, rotating rod; 306, connecting rod; 307, chute; 308, slider; 309, first spring; 311, slide rail; 312, slide rod; 313, stopper; 314, U-shaped plate; 315, second spring; 401, bottom frame; 402, bottom plate; 403, needle bar. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8 As shown, this embodiment provides a shaking type screening device for powder molding processing, including a support frame 101 for supporting the screening device, a screening assembly 300 for screening clean coal is arranged above the support frame 101, and a conveying assembly 200 for conveying clean coal into the screening assembly 300 is arranged on one side of the screening assembly 300, a screening plate 302 for screening clean coal is slidably connected inside the screening assembly 300, and a shaking system 310 is arranged on the side wall of the screening plate 302; The shaking system 310 is used to drive the screening plate 302 to bump up and down by sliding up and down, so that the screening plate 302 can shake and screen the clean coal; A cleaning assembly 400 for cleaning the screening plate 302 is provided at the lower side of the shaking system 310; When the cleaning component 400 slides up to the top through the shaking system 310, the cleaning component 400 penetrates the sieve plate 302 to dredge and clean the internal holes of the sieve plate 302.

[0021] The present invention takes into account that in the process of clean coal screening, the phenomenon of clean coal agglomeration is a common problem. This is mainly because in the process of clean coal forming, due to the effect of mechanical pressure or the mutual attraction of static electricity, the clean coal particles may gather together to form larger particle clusters. The size of these agglomerates often exceeds the aperture of the standard screen, so they are difficult to be screened out. Therefore, when the conveying assembly 200 performs a rotation operation, it can not only guide the clean coal to the screening assembly 300 for further processing, but also drive the shaking system 310 to achieve up and down reciprocating motion inside the screening assembly 300. This action further causes the screening plate 302 to produce an up and down bumping effect, and applies a clear shaking force to the screening plate 302, which can effectively disperse the clean coal particles that may have originally agglomerated, making them easier to penetrate the screen, thereby significantly improving the efficiency of the screening operation. At the same time, the shaking also helps to ensure that the clean coal particles are evenly distributed on the screening surface, improving the overall uniformity of the screening.

[0022] Secondly, it is considered that the fine particles or impurities in the clean coal may also become obstacles in the screening process. These fine particles and impurities may clog the pores of the screen, which will not only reduce the screening efficiency, but also shorten the service life of the screen. Therefore, by providing a cleaning component 400 on the lower side of the shaking system 310, the cleaning component 400 drives the screen plate 302 to shake while sliding upward through the shaking system 310, and also drives the cleaning component 400 to move upward, until the shaking system 310 stops driving the screen plate 302 to shake, at this time, the cleaning component 400 penetrates the screen plate 302 to dredge and clean the internal holes of the screen plate 302. By effectively cleaning the pores of the screen plate 302, the possibility of blockage of the screen plate 302 can be significantly reduced, and the degree of wear of the screen plate 302 can be reduced, thereby extending the service life of the screening equipment. Compared with the traditional cleaning method, this method does not require the operator to interrupt the workflow of the screening plate 302 and perform cleaning operations separately; instead, the cleaning is performed during the working interval of the screening plate 302. This not only shortens the working time and reduces the labor intensity of the operator, but also further extends the working life of the screening plate 302 by increasing the cleaning frequency.

[0023] The following items need to be disclosed: First, the clean coal must be able to smoothly enter the screening assembly 300 for screening. Figure 2 As shown, the conveying assembly 200 includes a spirally designed feeding rod 202, one end of which is fixedly connected to a motor 201, the upper side of the feeding rod 202 is a feeding port 203, the motor 201 drives the feeding rod 202 to rotate by rotating the output end, and the side wall of the motor 201 is fixedly connected to the side wall of the support frame 101, wherein: The feeding rod 202 is used to convey clean coal, and the feeding rod 202 is designed as a spiral rod, and there is friction between the clean coal and the surface of the spiral rod. When the spiral rod rotates, the friction makes the clean coal rotate with the surface of the spiral rod, and at the same time, due to the inclination angle of the spiral line, the clean coal is pushed to the end of the spiral rod while rotating, thereby realizing the conveying of the clean coal. The feed port 203 is used for the staff to pour the clean coal into the feeding rod 202 through it, and the motor 201 is used to drive the feeding rod 202 to rotate through the rotation of the output end, so that the clean coal can be continuously, stably and efficiently fed into the inside of the screening component 300, waiting for the next step of screening.

[0024] Specifically, the staff first starts the motor 201, and the output end of the motor 201 starts to rotate, thereby driving a feeding rod 202 to rotate. Subsequently, the staff pours the clean coal into the feed port 203, and the clean coal falls on the outer wall of the feeding rod 202. Then, the friction force causes the clean coal to rotate together with the surface of the spiral rod. At the same time, due to the inclination angle of the spiral line, the clean coal is pushed to the end of the spiral rod while rotating, thereby realizing the transportation of the clean coal.

[0025] Secondly, when the conveying assembly 200 performs a rotation operation, it can not only guide the clean coal to the screening assembly 300 for further processing, but also drive the shaking system 310 to achieve up and down reciprocating motion inside the screening assembly 300. This action further causes the screening plate 302 to produce an up and down bumping effect, exerting a clear shaking force on the screening plate 302, which can effectively disperse the clean coal particles that may have originally agglomerated, making it easier for them to penetrate the screen, thereby significantly improving the efficiency of the screening operation. Figure 3-Figure 4As shown, the screening component 300 also includes a screening bin 301, whose lower side is fixedly connected to the support frame 101, a discharge port 204 is provided on the lower side of the screening bin 301, a slide groove 307 is opened on the side wall, a slider 308 is slidably connected in the slide groove 307, one side of the slider 308 is fixed on the screening plate 302, so that the screening plate 302 slides up and down in the screening bin 301, the upper side of the slider 308 and the upper side of the inner wall of the slide groove 307 are jointly fixedly connected with a first spring 309, one end of the feeding rod 202 close to the screening bin 301 is fixedly connected to a transmission rod 303, the other end of the transmission rod 303 is fixedly connected to a disc 304, the disc 304 is rotatably connected to a rotating rod 305, and the contractile shaking system 310 includes a slider that slides up and down in the screening bin 301. Rail 311, the upper end of the slide rail 311 is rotatably connected to the outer wall of the rotating rod 305 by a connecting rod 306, the inner part of the slide rail 311 is slidably connected to a slide rod 312, the outer wall of the slide rail 311 is fixedly connected to a U-shaped plate 314, the inner wall of the U-shaped plate 314 is evenly fixed with a plurality of second springs 315, the other ends of the plurality of second springs 315 are fixedly connected to a stopper 313, the stopper 313 penetrates the side wall of the slide rail 311 and slides inside it, when the slide rod 312 slides inside the slide rail 311, it is in constant contact with the stopper 313, the contact surface between the slide rod 312 and the stopper 313 is an inclined surface, one side of the retractable slide rod 312 is fixedly connected to the screening plate 302, and is arranged opposite to the slider 308, the stiffness coefficient of the second spring 315 is greater than the stiffness coefficient of the first spring 309, wherein: The screening assembly 300 also includes a screening bin 301, which is used to enclose the clean coal to be screened to prevent the clean coal from escaping from the range of the screening plate 302 when it is shaken on the surface of the screening plate 302, resulting in waste of clean coal, and also to provide a shaking space for the screening plate 302. The lower side of the screening bin 301 is fixedly connected to the upper side of the support frame 101, and a discharge port 204 is installed on the lower side. The discharge port 204 is used to export the clean coal after screening. The side wall of the screening bin 301 is provided with a chute 307, which is used to Provide a space for the slider 308 to slide and ensure the stability of the sliding of the slider 308. The inner wall of the slide groove 307 is slidably connected with the slider 308. The side of the slider 308 away from the inner wall of the slide groove 307 is fixedly connected to one side of the screening plate 302, so that the screening plate 302 slides up and down inside the screening bin 301. The upper side of the slider 308 and the upper side of the inner wall of the slide groove 307 are fixedly connected with a first spring 309. The first spring 309 is used for the screening plate 302 to reset after sliding up, and continuously reciprocate up and down, thereby generating bumps and forming jitters. One end of the feeding rod 202 close to the screening bin 301 is fixedly connected to a transmission rod 303, and the transmission rod 303 is used to transmit the power of the feeding rod 202 to the disc 304, so that the disc 304 rotates continuously. The other end of the transmission rod 303 is fixedly connected to the disc 304, and the disc 304 is used to drive the rotating rod 305 to perform a circular motion by rotating. The eccentric part of the disc 304 is rotatably connected to the rotating rod 305, and the rotating rod 305 is used to drive the connecting rod 306 to continuously move up and down by performing a circular motion. The shaking system 310 specifically includes a slide rail 311 that slides up and down inside the screening bin 301, and the upper end of the slide rail 311 is rotatably connected to the outer wall of the rotating rod 305 with a connecting rod 306, and the connecting rod 306 is used to drive the slide rail 311 to reciprocate up and down; The slide rail 311 is slidably connected to a slide bar 312 inside, and the slide rail 311 is used to move up and down, so that the slide bar 312 moves up and down inside it. A U-shaped plate 314 is fixedly connected to the outer wall of the slide rail 311. The U-shaped plate 314 is used to provide a support point for the second spring 315 to ensure that the second spring 315 can operate normally. A plurality of second springs 315 are evenly fixedly connected to the inner wall of the U-shaped plate 314. The second springs 315 are used to elastically reset the stopper 313 after the stopper 313 is squeezed. The other ends of the plurality of second springs 315 are fixedly connected to the stopper 313. The stopper 313 is used to abut against the slide bar 312 and drive the slide bar 312 to move up. When the slide bar 312 cannot move up, the slide bar 312 squeezes the stopper 313 to force the stopper 313 to shrink, thereby sliding down. In this way, the slide bar 312 bumps up and down, causing the screening plate 302 to vibrate, and the other end of the block 313 penetrates the side wall of the slide rail 311 and slides inside the side wall of the slide rail 311. When the slide bar 312 slides inside the slide rail 311, it constantly abuts against the block 313, and the abutment between the slide bar 312 and the block 313 is an inclined surface structure. The side of the slide bar 312 away from the slide rail 311 is fixedly connected to the side wall of the screening plate 302, and is the side opposite to the slider 308. It is worth noting that the stiffness coefficient of the second spring 315 is greater than the stiffness coefficient of the first spring 309, and the first spring 309 will be compressed first. After the first spring 309 is compressed to the limit, the second spring 315 begins to compress, which prevents the block 313 from being unable to drive the slide bar 312 to move upward.

[0026] The rotation of the transmission rod 303 drives the disc 304 to rotate, and the rotation of the disc 304 drives the rotating rod 305 to perform a circular motion. The rotating rod 305 drives the connecting rod 306 to continuously move up and down by performing a circular motion. The connecting rod 306 moves up and down, driving the slide rail 311 to reciprocate up and down. As the slide rail 311 moves up, the stop block 313 abuts against the lower side of the slide rod 312 and lifts the slide rod 312 to move up. It should be noted that in the present invention, the first spring 309 and the second spring 315 are both capable of fully supporting the gravity generated by the screen plate 302 and the accumulated clean coal on its upper side, and can also cope with the friction generated by the screen plate 302 during the up and down movement, thereby ensuring the stability of the structure and the normal execution of the function. This is easy for people in the field of technology to associate with, and will not be elaborated here. As the slide bar 312 moves upward, the screening plate 302 moves upward, and the screening plate 302 moves upward, and the slider 308 moves upward. At this time, the slider 308 moves upward inside the slide slot 307 and compresses the first spring 309. As the slider 308 compresses the first spring 309 and slides to the top of the slide slot 307, a downward force is applied to the screening plate 302, so that the slide bar 312 squeezes the block 313, forcing the block 313 to squeeze the second spring 315 to shrink, so that the slide bar 312 is separated from the support of the block 313 and slides down, and so on, constantly driving the screening plate 302 to bump up and down, thereby achieving the shaking of the screening plate 302, which can effectively disperse the clean coal particles that may have originally agglomerated, making it easier for them to penetrate the screen, thereby significantly improving the efficiency of the screening operation. At the same time, the shaking also helps to ensure that the clean coal particles are evenly distributed on the screening surface, improving the overall uniformity of the screening; In addition, since one end of the screening plate 302 is supported and restricted by the first spring 309, and the other end is supported and fluctuated by the block 313, under the premise that the stiffness coefficient of the second spring 315 is greater than the stiffness coefficient of the first spring 309, when the shaking system 310 moves upward as a whole, the force of the block 313 lifting the other end of the screening plate 302 upward is greater than the elastic force of the first spring 309, so that the end of the screening plate 302 close to the block 313 moves upward and tilts. As the material is conveyed in, under the action of the gravity of the material, one end of the screening plate 302 slides from the inclined surface of the baffle 313 and falls on the next baffle 313 for support. At this time, the end of the screening plate 302 close to the baffle 313 moves downward and tilts. With the reciprocating movement, the screening plate 302 not only shakes, but also tilts back and forth, so that the material dropped on the screening plate 302 is evenly dispersed.

[0027] Finally, it is to be achieved that the risk of clogging of the screen plate 302 can be significantly reduced, the wear of the screen plate 302 can be reduced, thereby extending the service life of the screening equipment, and also helping to reduce equipment failures and maintenance costs caused by clogging, while reducing clogging and maintenance time during the screening process, optimizing the production process, and improving overall production efficiency, such as Figure 5 As shown, the cleaning assembly 400 includes a bottom frame 401 fixed to the lower end of the slide rail 311, and a plurality of bottom plates 402 are fixed to the inner wall of the bottom frame 401. A needle bar 403 is fixed above each bottom plate 402. The positions of the needle bars 403 correspond to the holes of the screening plate 302 one by one, and the inner diameter of the needle bars 403 is the same as the inner diameter of the holes of the screening plate 302, wherein: The cleaning component 400 specifically includes a bottom frame 401 fixedly connected to the lower end of the slide rail 311, and the bottom frame 401 drives the bottom plate 402 to move upward by being fixedly connected to the slide rail 311. A plurality of bottom plates 402 are evenly and fixedly connected to the inner wall of the bottom frame 401. The bottom plates 402 are used to provide support force for the needle bars 403 and to push the needle bars 403 upward. A plurality of needle bars 403 are evenly and fixedly connected to the upper sides of the plurality of bottom plates 402. The positions of the plurality of needle bars 403 correspond one-to-one to the holes of the screening plate 302, and the inner diameter of the needle bars 403 is the same as the inner diameter of the holes of the screening plate 302. The needle bars 403 are used to move upward through the holes of the screening plate 302 to squeeze out debris blocked in the holes of the screening plate 302, thereby significantly reducing the risk of blockage of the screening plate 302 and reducing the wear of the screening plate 302, thereby extending the service life of the screening equipment.

[0028] Specifically, as the slide rail 311 moves upward, the bottom frame 401 also moves upward, and the upward movement of the bottom frame 401 drives the bottom plate 402 to move upward, and the upward movement of the bottom plate 402 drives the needle bar 403 to move upward. When the slide rail 311 moves to the highest point, the needle bar 403 passes through the holes of the screen plate 302 to clear the holes of the screen plate 302.

[0029] The specific working principle of the present invention is: First, the staff starts the motor 201, and its output end immediately starts to rotate, thereby driving the feeding rod 202 to rotate. Then, the staff pours the clean coal into the feed port 203, and the clean coal immediately falls on the outer wall of the feeding rod 202. Due to the effect of friction, the clean coal rotates together with the surface of the feeding rod 202. At the same time, due to the inclination angle of the spiral line of the feeding rod 202, the clean coal is gradually pushed to its end while rotating, realizing the effective transportation of the clean coal.

[0030] When the feeding rod 202 rotates and transports the clean coal, it drives the transmission rod 303 to rotate at the same time. The rotation of the transmission rod 303 drives the disc 304 to rotate, and then the rotating rod 305 performs a circular motion. The circular motion of the rotating rod 305 drives the connecting rod 306 to perform a continuous up and down displacement motion. The up and down movement of the connecting rod 306 further drives the slide rail 311 to perform an up and down reciprocating motion.

[0031] When the slide rail 311 moves upward, the stopper 313 contacts the lower side of the slide bar 312 and lifts the slide bar 312 to move upward together. In this process, the first spring 309 and the second spring 315 have sufficient support force to fully bear the gravity of the screen plate 302 and the clean coal accumulated on its upper side, and to cope with the friction force generated by the screen plate 302 during the upward and downward movement, so as to ensure the stability of the structure and the normal execution of the function.

[0032] As the slide bar 312 moves upward, the screening plate 302 and the slider 308 thereon also move upward. While the slider 308 moves upward inside the chute 307, it compresses the first spring 309. When the slider 308 slides to the top of the chute 307, it applies a downward force to the screening plate 302, causing the slide bar 312 to squeeze the block 313, thereby forcing the block 313 to squeeze the second spring 315 to contract. At this time, the slide bar 312 breaks away from the support of the block 313 and begins to slide down. This process is repeated, continuously driving the screening plate 302 to bump up and down, thereby causing the screening plate 302 to shake. This shaking effectively disperses the clean coal particles that may agglomerate, making it easier for them to penetrate the screen, thereby significantly improving the efficiency of the screening operation. At the same time, the shaking also helps to ensure that the clean coal particles are evenly distributed on the screening surface, improving the overall uniformity of the screening.

[0033] In addition, as the slide rail 311 moves upward, the bottom frame 401 and the bottom plate 402 and the needle bar 403 thereon also move upward. When the slide rail 311 moves to the highest point, the needle bar 403 passes through the hole of the screen plate 302 to clear the hole of the screen plate 302.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shaking type screening device for powder forming processing, comprising a support frame (101) for supporting the screening device, a screening assembly (300) for screening clean coal is arranged above the support frame (101), and a conveying assembly (200) for conveying clean coal into the screening assembly (300) is arranged on one side of the screening assembly (300), characterized in that: A screening plate (302) for screening clean coal is slidably connected inside the screening assembly (300), and a shaking system (310) is provided on the side wall of the screening plate (302); The shaking system (310) is used to drive the screening plate (302) to shake up and down by sliding up and down, so that the screening plate (302) can shake and screen the clean coal; A cleaning assembly (400) for cleaning the screening plate (302) is provided on the lower side of the shaking system (310); When the cleaning component (400) slides up to the top through the shaking system (310), the cleaning component (400) penetrates the screening plate (302) to clear and clean the internal holes of the screening plate (302).

2. The shaking type powder forming processing screening device according to claim 1 is characterized in that: The conveying assembly (200) comprises a spirally designed feeding rod (202), one end of the feeding rod (202) is fixedly connected to a motor (201), and the upper side of the feeding rod (202) is a feeding port (203).

3. The shaking type powder forming processing screening device according to claim 2 is characterized in that: The motor (201) drives the feeding rod (202) to rotate by rotating the output end, and the side wall of the motor (201) is fixedly connected to the side wall of the support frame (101).

4. The shaking type powder forming processing screening device according to claim 3 is characterized in that: The screening assembly (300) further comprises a screening bin (301), the lower side of which is fixedly connected to the support frame (101); a discharge port (204) is provided at the lower side of the screening bin (301); a slide groove (307) is provided on the side wall; a slider (308) is slidably connected in the slide groove (307); one side of the slider (308) is fixed to the screening plate (302), so that the screening plate (302) slides up and down in the screening bin (301).

5. The shaking type powder forming processing screening device according to claim 4 is characterized in that: The upper side of the sliding block (308) and the upper side of the inner wall of the sliding groove (307) are fixedly connected with a first spring (309).

6. The shaking type powder forming processing screening device according to claim 5, characterized in that: One end of the feeding rod (202) close to the screening bin (301) is fixedly connected to a transmission rod (303), the other end of the transmission rod (303) is fixedly connected to a disc (304), and the disc (304) is rotatably connected to a rotating rod (305) at an eccentric position.

7. The shaking type powder forming processing screening device according to claim 6 is characterized in that: The retractable shaking system (310) comprises a slide rail (311) that slides up and down inside the screening bin (301), the upper end of the slide rail (311) is rotatably connected to the outer wall of the rotating rod (305) by a connecting rod (306), and the interior of the slide rail (311) is slidably connected to a sliding rod (312); The outer wall of the slide rail (311) is fixedly connected to a U-shaped plate (314); a plurality of second springs (315) are evenly fixedly connected to the inner wall of the U-shaped plate (314); the other ends of the plurality of second springs (315) are fixedly connected to a stopper (313); the stopper (313) penetrates the side wall of the slide rail (311) and slides inside the side wall.

8. The shaking type powder forming processing screening device according to claim 7, characterized in that: When the slide bar (312) slides inside the slide rail (311), it is in continuous contact with the stopper (313). The contact surface between the slide bar (312) and the stopper (313) is an inclined surface. One side of the retractable slide bar (312) is fixedly connected to the screening plate (302) and is arranged opposite to the slider (308).

9. The shaking type powder forming processing screening device according to claim 8, characterized in that: The spring constant of the second spring (315) is greater than the spring constant of the first spring (309).

10. The shaking type powder forming processing screening device according to claim 9, characterized in that: The cleaning assembly (400) comprises a bottom frame (401) fixed to the lower end of the slide rail (311), a plurality of bottom plates (402) being fixed to the inner wall of the bottom frame (401), a needle bar (403) being fixed above each of the bottom plates (402), the positions of the needle bars (403) corresponding to the holes of the screening plate (302), and the inner diameter of the needle bars (403) being the same as the inner diameter of the holes of the screening plate (302).

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