Automatic reject vibrating screen

Abstract

The application discloses an automatic rejection vibrating screen and relates to the technical field of vibrating screens.The automatic rejection vibrating screen comprises a vibrating assembly, a screening assembly, a connecting pipe and a cleaning assembly.The screening assembly comprises a screening round box, a C-shaped sector seat, a through-through hole, a discharge port, a C-shaped partition plate, a rotating disc, a T-shaped through hole, a screen mesh, a discharge gap, a material guide port and a driving motor.The driving motor is used for driving the rotating disc to rotate, so that the alignment state of the four screen meshes and the through-through hole is switched, and different particle size screening operations are realized.The cleaning assembly is used for carrying out back-blowing cleaning operations on the screen meshes that are switched off.The screening assembly is arranged to realize screening operations of different particle sizes and different classification quantities of different raw materials.Meanwhile, the cleaning assembly is arranged to realize cleaning and collection of residual materials on the screen meshes, so that the screen meshes are convenient for subsequent use.Compared with a traditional operation mode in which the screen meshes are disassembled to be replaced and cleaned, the overall operation is simpler, easier and more efficient.

Description

Technical Field

[0001] This invention relates to the field of vibrating screen technology, specifically to an automatic rejection vibrating screen. Background Technology

[0002] In the cake production process, different requirements exist for the particle size of raw materials (such as flour, sugar, starch, and auxiliary ingredients) to suit the production of different types of cakes. For example, granulated sugar can be divided into many grades according to particle size, such as coarse sugar, regular sugar, fine sugar, extra-fine sugar, and caster sugar. In baking, fine sugar is usually used when making cakes or cookies because it is easier to incorporate into dough or batter. When whipping egg whites, coarser sugar is easier to use, but the foam will be coarser. Using finer sugar will result in slower whipping, but the foam will be smoother. Sifting flour ensures uniform fineness, which is beneficial for mixing with ingredients such as eggs and butter, resulting in a more delicate and fluffy texture in the finished product. Therefore, sifting raw materials is an essential step in the actual cake production process.

[0003] The rotary vibrating screen is one of the commonly used equipment for sieving raw materials for cakes. It uses a vertical motor as the excitation source, and eccentric weights are installed at the upper and lower ends of the motor to convert the rotational motion of the motor into a three-dimensional motion of horizontal, vertical and inclined motion. This motion is then transmitted to the screen surface, causing the material to make an outward involute motion on the screen surface. Therefore, this series of vibrating screens is called a rotary vibrating screen.

[0004] In the cake production process, different raw materials have different particle size screening requirements. This means that if the same machine is used to screen different raw materials, the screen needs to be replaced. This requires stopping the machine and disassembling it, resulting in low overall operating efficiency and affecting cake processing efficiency. Furthermore, after screening, some filter holes may become clogged, requiring disassembly and cleaning, which further increases the workload. Based on this, an automatic rejection vibrating screen is provided. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic rejection vibrating screen in order to solve the problems mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic rejection vibrating screen, comprising a vibrating assembly, a screening assembly, and a connecting pipe. Multiple screening assemblies are arranged vertically, and these assemblies are connected and communicate with each other via connecting pipes. The bottom connecting pipe is fixedly connected to the vibrating assembly. The vibrating assembly provides the screening assembly with vibrating screening force. The screening assembly includes a screening cylinder, a C-shaped sector seat, and a through hole. Two C-shaped partition plates are provided, and the two C-shaped partition plates and the C-shaped sector seat are evenly distributed around the circumference and fixedly connected to the upper and lower ends and sides of the screening cylinder. The through hole is located in the middle of the C-shaped sector seat and completely penetrates the C-shaped sector seat and the upper and lower ends of the screening cylinder.

[0007] As a further embodiment of the present invention: the screening assembly further includes a discharge port, a C-shaped partition plate, a rotating disk, a T-shaped through hole, a screen, a discharge notch, a guide port, and a drive motor. The discharge port is opened on one side of the through hole and passes through the C-shaped fan-shaped seat and the screening box to the outside of the screening box. The guide port is fixed to the outside of the screening box and is aligned and connected with the discharge port. The rotating disk is rotatably connected to the C-shaped fan-shaped seat and the middle of the two C-shaped partition plates. The drive motor is installed and fixed at the center of the top of the screening box, and the output shaft of the drive motor passes through the screening box and is fixedly connected to the center of the rotating disk. There are four T-shaped through holes, which are evenly distributed along the circumference and pass through the upper and lower ends of the rotating disk. The screen is installed inside the T-shaped through hole. The discharge notch is opened on one side of the inner wall of the T-shaped through hole and passes through the outside of the rotating disk.

[0008] The screens aligned with the through holes are used to screen materials. The channel consisting of the discharge notch, outlet, and guide port is used to discharge the retained materials. The drive motor drives the rotating disk to switch the alignment state of the four screens with the through holes, so as to achieve screening operations of different particle sizes.

[0009] As a further solution of the present invention: a cleaning component is also provided at the bottom and side of the screening circular box, and the cleaning component is used for performing a reverse blow cleaning operation on the replaced screen; the cleaning component includes an air inlet pipe, an annular spray pipe, a rotating air spray head, and a suction pipe; the air inlet pipe penetrates from the bottom of the screening circular box to the inside of the screening circular box, and the top of the air inlet pipe is fixedly connected and conducted to the annular spray pipe through a shunt branch pipe; a plurality of rotating air spray heads are provided, and the plurality of rotating air spray heads are evenly distributed and installed on the upper surface of the annular spray pipe along the circumferential direction, and the plurality of rotating air spray heads are distributed directly below the idle screen; the suction pipe penetrates from one side of the screening circular box to the inside of the screening circular box and is distributed on one side of the rotating disk; the air inlet pipe and the suction pipe are respectively connected to an external air pump and a dust suction device, and the air pump conveys high-pressure air to the rotating air spray head to make the rotating air spray head rotate and blow the screen, so as to realize the reverse blow cleaning of the screen, and the dust suction device is operated to collect the material residues cleaned out.

[0010] As a further solution of the present invention: three groups of the cleaning components are provided, and the three groups of the cleaning components are respectively distributed between two C-shaped partition plates and between the C-shaped partition plate and the C-shaped sector seat, and the centers of the three air inlet pipes in the three groups of the cleaning components are respectively aligned with the centers of the three idle screens.

[0011] As a further solution of the present invention: an annular pressing plate for pressing the edge part of the screen is installed in the T-shaped through hole, and an annular clamping groove for the annular side of the annular pressing plate with a cross section in the shape of "Ji" to be installed and embedded is formed at the bottom of the large-diameter notch at the upper part of the T-shaped through hole; the upper surface of the annular pressing plate, the upper surface of the screen, the inner wall bottom surface of the discharge notch, and the inner wall bottom surface of the discharge port are in a horizontal and flush state, and when one screen rotates to be aligned with the through hole, the screen and its corresponding annular pressing plate are flush with the bottom surface of the承接端 of the discharge port.

[0012] As a further solution of the present invention: annular grooves for the rotating disk to rotate are formed in the middle of the C-shaped sector seat and the C-shaped partition plate, and sealing members are provided at the positions where the C-shaped sector seat, the C-shaped partition plate and the rotating disk contact.

[0013] As a further solution of the present invention: an inspection opening is provided on one side of the top of the screening circular box away from the through hole, and an inspection door is connected by a hinge at the position of the screening circular box at the inspection opening, and one screen away from the through hole is directly below the inspection opening.

[0014] As a further solution of the present invention: the vibration component includes a base, a vibration spring, a vibration seat, and a vibration motor.

[0015] Multiple vibration springs are provided, evenly distributed around the circumference and located between the top of the base and the bottom of the vibration seat. The upper and lower ends of the vibration springs are fixedly connected to the top of the base and the bottom of the vibration seat, respectively. The vibration motor is installed at the center of the bottom of the vibration seat. The connecting pipe at the bottommost position is fixed to the top of the vibration seat, and a bottom discharge port communicating with the connecting pipe is fixed on one side of the bottommost connecting pipe. The extended end of the bottom discharge port is inclined downward. A ramp guide plate is installed inside the bottommost connecting pipe, and the lower end of the ramp guide plate is flush with the inlet of the bottom discharge port.

[0016] As a further embodiment of the present invention: multiple vertically distributed screening components are distributed in a deflected and staggered state along the circumference with the connecting pipe as the center. The center line of the connecting pipe coincides with the center line of the base and the vibrating seat, and the distribution diameter of multiple vibration springs is greater than the outer diameter of the circumferential distribution trajectory of multiple screening boxes; the height of the connecting pipe between two adjacent screening boxes is greater than the flip height of the maintenance door.

[0017] As a further embodiment of the present invention: one of the screens in the screening assembly not at the top is replaced by a planar sealing plate, which is rotated to align with the through hole to achieve the final discharge of the screened material.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting up multiple screening components, each screening component has four screens that can be easily switched, which can realize screening operations of different particle sizes and different grades of different raw materials. Furthermore, the screen position can be switched to the maintenance port by the drive motor, which also facilitates the replacement of the screens. Compared with the traditional operation mode that requires disassembly and replacement of screens, it is not only more efficient and convenient, but also effectively reduces the workload of the staff.

[0020] 2. By setting up a cleaning component, when the screen is switched to an idle state after use, the residual material on the screen can be cleaned and collected by connecting the cleaning component to an external air pump and dust collection device, which facilitates subsequent use. Compared with the traditional operation mode that requires disassembling the screen for cleaning, the overall operation is simpler, easier and more efficient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a single screening assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation structure of the air intake pipe at the bottom of a single set of screening components according to the present invention;

[0024] Figure 4 This is a schematic diagram of the screening assembly structure when the maintenance door of the present invention is opened;

[0025] Figure 5 This is a schematic diagram of the internal structure of the screening box of the present invention;

[0026] Figure 6 This is a structural diagram showing the disassembled structure of the screening box and rotating disk of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation structure of the cleaning component of the present invention;

[0028] Figure 8 This is a schematic diagram of the rotating disk of the present invention;

[0029] Figure 9 This is a schematic diagram of the installation and assembly structure of the screening box and the rotating disk of the present invention;

[0030] Figure 10 This is a schematic diagram of the installation position of the suction tube of the present invention.

[0031] In the diagram: 1. Vibration assembly; 101. Base; 102. Vibration spring; 103. Vibration seat; 104. Vibration motor; 2. Screening assembly; 201. Screening box; 202. C-shaped fan seat; 203. Through hole; 204. Discharge port; 205. C-shaped partition plate; 206. Rotating disc; 207. T-shaped through hole; 208. Screen; 209. Annular pressure plate; 210. Discharge notch; 211. Guide port; 212. Drive motor; 213. Inspection door; 3. Cleaning assembly; 301. Air inlet pipe; 302. Annular nozzle; 303. Rotary air nozzle; 304. Suction pipe; 4. Connecting pipe; 5. Bottom discharge port; 6. Inclined guide plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0034] Please see Figures 1 to 10 In this embodiment of the invention, the automatic rejection vibrating screen includes a vibrating component 1, a screening component 2, and a connecting pipe 4. Multiple screening components 2 are arranged vertically, and these components are connected and communicated via the connecting pipe 4. The bottom connecting pipe 4 is fixedly connected to the vibrating component 1. The vibrating component 1 provides vibration and screening force to the screening component 2. The screening component 2 includes a screening cylinder 201, a C-shaped sector seat 202, and a through hole 203. Two C-shaped partition plates 205 are provided, and the two C-shaped partition plates 205 and the C-shaped sector seat 202 are evenly distributed around the circumference and fixedly connected to the upper and lower ends and sides of the screening cylinder 201. The through hole 203 is opened in the middle of the C-shaped sector seat 202 and completely penetrates the C-shaped sector seat 202 and the upper and lower ends of the screening cylinder 201.

[0035] The screening assembly 2 also includes a discharge port 204, a C-shaped partition plate 205, a rotating disk 206, a T-shaped through hole 207, a screen 208, a discharge notch 210, a guide port 211, and a drive motor 212. The discharge port 204 is located on one side of the through hole 203 and passes through the C-shaped sector seat 202 and the screening cylinder 201 to the outside of the screening cylinder 201. The guide port 211 is fixed to the outside of the screening cylinder 201 and is aligned and connected with the discharge port 204. The rotating disk 206 is rotatably connected to the C-shaped sector seat 202. Between the two C-shaped partition plates 205, the drive motor 212 is installed and fixed at the top center of the screening box 201, and the output shaft of the drive motor 212 passes through the screening box 201 and is fixedly connected to the center of the rotating disk 206; four T-shaped through holes 207 are provided, which are evenly distributed along the circumference and pass through the upper and lower ends of the rotating disk 206; the screen 208 is installed inside the T-shaped through holes 207; the discharge notch 210 is opened on one side of the inner wall of the T-shaped through holes 207 and passes through the outer side of the rotating disk 206.

[0036] The screen 208, aligned with the through hole 203, is used to screen the material. The channel formed by the discharge notch 210, the discharge port 204, and the guide port 211 is used to discharge the retained material. The rotating disk 206 is driven by the drive motor 212 to switch the alignment state of the four screens 208 with the through hole 203, thereby realizing screening operations of different particle sizes.

[0037] The vibration assembly 1 includes a base 101, a vibration spring 102, a vibration seat 103, and a vibration motor 104. Multiple vibration springs 102 are provided, and the multiple vibration springs 102 are evenly distributed along the circumference and located between the top of the base 101 and the bottom of the vibration seat 103. The upper and lower ends of the vibration springs 102 are fixedly connected to the top of the base 101 and the bottom of the vibration seat 103, respectively.

[0038] The vibration motor 104 is installed at the center of the bottom of the vibration base 103. The connecting pipe 4 at the bottom is fixed to the top of the vibration base 103. A bottom discharge port 5 communicating with the connecting pipe 4 is also fixed on one side of the bottom connecting pipe 4. The extended end of the bottom discharge port 5 is inclined downward. A ramp guide plate 6 is installed inside the bottom connecting pipe 4. The lower end of the ramp guide plate 6 is flush with the inlet of the bottom discharge port 5.

[0039] One of the screens 208 in the non-topmost screening assembly 2 is replaced by a flat sealing plate, which rotates to align with the through hole 203 to achieve the final discharge of the screened material.

[0040] In this embodiment, it should be noted that the aperture of the four screens 208 in the single screening component 2 can be selected according to the screening requirements of different materials.

[0041] When screening raw materials, the number of screening components 2 used can be determined according to the number of times the raw materials need to be graded. For example, when screening is required once, only the top screening component 2 is needed. At this time, the flat sealing plate on the second set of screening components 2 is adjusted to be aligned with the through hole 203. When screening is required twice, the flat sealing plate on the third set of screening components 2 is adjusted to be aligned with the through hole 203. This process can be repeated to achieve different numbers of screening operations. It should be noted that when all screening components 2 are used, the screened material is finally discharged through the bottom discharge port 5.

[0042] In addition, the required screen 208 can be determined according to the particle size of each screening stage. At this time, the drive motor 212 can drive the rotating disk 206 to rotate, so that the required screen 208 can be rotated to be aligned with the through hole 203. (It should be noted that the position of the flat sealing plate is also driven by the drive motor 212. The drive motor 212 can be controlled by an external controller so that the rotating disk 206 can rotate 90 degrees at a time, thereby realizing the convenient switching of screen 208.)

[0043] After the screen 208 and the flat sealing plate are adjusted and set, the vibration motor 104 can be started. The vibration motor 104 drives the vibration seat 103 to vibrate, and the vibration seat 103 drives multiple sets of screening components 2 to vibrate. At the same time, the raw material to be screened is introduced into the uppermost connecting pipe 4. The raw material will fall down along the channel formed by the connecting pipe 4 and the through hole 203. During this process, it can be screened by multiple screens 208 distributed vertically and vertically, and finally intercepted by the flat sealing plate. The materials of each level intercepted by the screen 208 and the flat sealing plate will be discharged along the channel formed by the discharge notch 210, the discharge port 204 and the guide port 211 on each set of screening components 2. The guide port 211 can be connected to each collection device through an external pipe.

[0044] By combining the above components, screening operations of different particle sizes and different grades of different raw materials can be achieved. Furthermore, the screen 208 can be easily switched by driving the rotating disk 206 through the drive motor 212. Compared with the traditional operation mode that requires disassembling and replacing the screen, it is not only more efficient and convenient, but also effectively reduces the workload of the staff.

[0045] Please refer to this carefully. Figures 1 to 10The bottom and sides of the screening chamber 201 are also equipped with cleaning components 3. These components are used for back-blowing cleaning of the screens 208 that have been switched off from their non-operational state. The cleaning components 3 include an air inlet pipe 301, an annular nozzle 302, a rotary air nozzle 303, and a suction pipe 304. The air inlet pipe 301 extends from the bottom of the screening chamber 201 into its interior, and its top is fixedly connected to the annular nozzle 302 via a branch pipe. Multiple rotary air nozzles 303 are evenly distributed along the circumference on the upper surface of the annular nozzle 302, and are positioned directly below the idle screens 208. The suction pipe 304 extends from one side of the screening chamber 201 into its interior and is distributed on one side of the rotating disk 206.

[0046] The air inlet pipe 301 and the suction pipe 304 are connected to an external air pump and a dust collection device, respectively. The air pump delivers high-pressure air to the rotating air nozzle 303, causing the rotating air nozzle 303 to rotate and blow air onto the screen 208, which is used to achieve reverse blowing cleaning of the screen 208. The dust collection device is used to collect the material residue after cleaning.

[0047] The number of cleaning components 3 is set to three sets. The three sets of cleaning components 3 are respectively distributed between the two C-shaped partition plates 205 and between the C-shaped partition plate 205 and the C-shaped fan seat 202. The centers of the three air inlet pipes 301 in the three sets of cleaning components 3 are respectively aligned with the centers of the three idle screens 208.

[0048] In this embodiment: When switching the screen 208, the previously used screen 208 will be rotated to the position between the two C-shaped partitions 205 or between the C-shaped partitions 205 and the C-shaped sector seat 202. At this time, the screen 208 is in an idle state, and there may be some residual raw material on the screen 208. At this time, the screen 208 can be cleaned. The operation steps are as follows:

[0049] First, connect the output end of the external air pump to the air inlet pipe 301 through a flexible air tube, and connect the suction port of the dust collection device to the suction pipe 304 through a corrugated pipe (it should be noted that the air inlet pipe 301 and the suction pipe 304 correspond to the positions of the screen 208 to be cleaned). Then, start the external air pump and the dust collection device simultaneously. The external air pump delivers high-pressure air to the rotating air nozzle 303, which rotates while blowing air onto the screen 208. This achieves all-round blowing operation on the screen 208, causing the residual material stuck in the screen holes of the screen 208 to be blown away. Meanwhile, the dust collection device can suck away the air mixed with the material, thereby achieving the cleaning and collection of the residual material.

[0050] It should be noted that there is a gap space between the outer side of the corresponding part of the rotating disk 206 and the idle screen 208 and the inner wall of the screening circular box 201, and the pipe opening position of the suction pipe 304 is exactly in this gap space. During the process of blowing the screen 208, some raw materials are shaken off and fall into the area below the rotating disk 206. It is not convenient for this part of the raw materials to pass through the screen 208 to the upper part again. Therefore, by setting the suction pipe 304 at the position of the horizontal height aligned with the rotating disk 206, the suction pipe 304 can perform suction operations on the spaces above and below the rotating disk 206 when sucking, so as to fully collect the residual raw materials.

[0051] Please refer specifically to Figures 5 to 8 , a T-shaped through hole 207 is provided with an annular pressing plate 209 for pressing the edge of the screen 208, and an annular clamping groove for the annular side of the annular pressing plate 209 with a "Ji" - shaped cross-section to be installed and embedded is formed at the bottom of the large-diameter notch at the upper part of the T-shaped through hole 207.

[0052] The upper surface of the annular pressing plate 209, the upper surface of the screen 208, the inner wall bottom surface of the discharge notch 210, and the inner wall bottom surface of the discharge port 204 are in a horizontal and flush state. When a screen 208 rotates to align with the through hole 203, the lower bottom surface of the receiving end of this screen 208 and its corresponding annular pressing plate 209 are flush with the discharge port 204.

[0053] In this embodiment: Through this structure, the smooth discharge of raw materials can be ensured. The annular pressing plate 209 and the bottom of the inner wall of the annular clamping groove are fixed by screws. The detachable structure of the annular pressing plate 209 facilitates the replacement and disassembly of the screen 208.

[0054] Please refer specifically to Figures 4 to 10 , an annular groove for the rotation of the rotating disk 206 is formed in the middle of the C-shaped sector seat 202 and the C-shaped partition plate 205, and a sealing member is provided at the position where the C-shaped sector seat 202, the C-shaped partition plate 205 and the rotating disk 206 are in contact.

[0055] In this embodiment: Through this structure, the smooth rotation of the rotating disk 206 is ensured. At the same time, through the sealing member, the areas where the four screens 208 are located can be independently sealed, which not only ensures the sealing of the material screening area, but also ensures that cleaning one screen 208 will not affect other screens 208.

[0056] Please refer specifically to Figures 1 to 5 , an inspection opening is provided on one side of the top of the screening circular box 201 far from the through hole 203, and an inspection door 213 is connected to the screening circular box 201 at the inspection opening through a hinge, and one screen 208 far from the through hole 203 is directly below the inspection opening.

[0057] Multiple vertically distributed screening components 2 are arranged in a staggered, circumferential manner around the connecting pipe 4. The centerline of the connecting pipe 4 coincides with the centerline of the base 101 and the vibrating seat 103. Furthermore, the distribution diameter of the multiple vibrating springs 102 is larger than the outer diameter of the circumferential distribution trajectory of the multiple screening boxes 201. The height of the connecting pipe 4 between two adjacent screening boxes 201 is greater than the tilting height of the inspection door 213.

[0058] In this embodiment, the screen 208 located at the maintenance port can be easily replaced by opening the inspection door 213 without disassembling the entire equipment. The structure where the center line of the connecting pipe 4 coincides with the center lines of the base 101 and the vibrating seat 103 ensures that the vibration of the equipment is centered on the connecting pipe 4 and the through hole 203, thereby guaranteeing stable operation of the screening process.

[0059] In addition, the structure of multiple vertically distributed screening components 2 arranged in a deflected and staggered manner along the circumference with the connecting pipe 4 as the center, and the structure of multiple vibration springs 102 having a distribution diameter larger than the outer diameter of the circumferential distribution trajectory of multiple screening boxes 201, keeps the weight of the entire equipment balanced, thereby ensuring smooth vibration operation. At the same time, it allows the guide ports 211 on each screening component 2 to be staggered in sequence to avoid mutual interference.

[0060] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic rejection vibrating screen, comprising a vibrating assembly (1), a screening assembly (2), and a connecting pipe (4), wherein multiple sets of screening assemblies (2) are arranged vertically, and the multiple sets of screening assemblies (2) are connected and communicated through the connecting pipe (4), with the bottom connecting pipe (4) fixedly connected to the vibrating assembly (1), and the vibrating assembly (1) is used to provide vibrating screening force to the screening assembly (2), characterized in that, The screening assembly (2) includes a screening cylinder (201), a C-shaped sector seat (202), and a through hole (203); two C-shaped partition plates (205) are provided, and the two C-shaped partition plates (205) and the C-shaped sector seat (202) are evenly distributed around the circumference and fixed to the inner side of the screening cylinder (201) and fixedly connected to the upper and lower ends and the side of the screening cylinder (201); the through hole (203) is opened in the middle of the C-shaped sector seat (202) and completely penetrates the C-shaped sector seat (202) and the upper and lower ends of the screening cylinder (201); The screening assembly (2) further includes a discharge port (204), a C-shaped partition plate (205), a rotating disk (206), a T-shaped through hole (207), a screen (208), a discharge notch (210), a guide port (211), and a drive motor (212); the discharge port (204) is located on one side of the through hole (203) and extends through the C-shaped fan seat (202), the screening round box (201), and to the outside of the screening round box (201); the guide port (211) is fixed to the outside of the screening round box (201) and is aligned and connected with the discharge port (204); the rotating disk (206) is rotatably connected to the C-shaped fan seat (208). 202) Between the two C-shaped partition plates (205), the drive motor (212) is installed and fixed at the top center of the screening box (201), and the output shaft of the drive motor (212) passes through the screening box (201) and is fixedly connected to the center of the rotating disk (206); four T-shaped through holes (207) are provided, the four T-shaped through holes (207) are evenly distributed along the circumference and pass through the upper and lower ends of the rotating disk (206), the screen (208) is installed inside the T-shaped through holes (207), and the discharge notch (210) is opened on one side of the inner wall of the T-shaped through hole (207) and passes through the outer side of the rotating disk (206); The bottom and sides of the screening chamber (201) are also provided with cleaning components (3), which include an air inlet pipe (301), an annular nozzle (302), a rotary air nozzle (303), and a suction pipe (304). The air inlet pipe (301) extends from the bottom of the screening chamber (201) into the interior of the screening chamber (201), and the top of the air inlet pipe (301) is fixedly connected to the annular nozzle (302) through a branch pipe. The rotary air nozzle (304) is also provided with cleaning components (304). 3) Multiple rotating air nozzles (303) are evenly distributed and installed on the upper surface of the annular nozzle (302) along the circumferential direction, and the multiple rotating air nozzles (303) are distributed directly below the idle screen (208); the suction pipe (304) extends from one side of the screening box (201) into the interior of the screening box (201) and is distributed on one side of the rotating disk (206); the air inlet pipe (301) and the suction pipe (304) are respectively connected to the external air pump and the dust collection device.

2. The automatic rejection vibrating screen according to claim 1, characterized in that, The number of the cleaning components (3) is set to three groups. The three groups of the cleaning components (3) are respectively distributed between two C-shaped partition plates (205) and between the C-shaped partition plate (205) and the C-shaped sector seat (202). The centers of the three air inlet pipes (301) in the three groups of the cleaning components (3) are respectively aligned with the centers of three idle screen meshes (208).

3. The automatic rejection vibrating screen according to claim 1, characterized in that, An annular pressing plate (209) for pressing the edge of the screen mesh (208) is installed in the T-shaped through hole (207). An annular clamping groove for installing and embedding the annular side of the annular pressing plate (209) with a "Ji" - shaped cross-section is formed at the bottom of the large-diameter notch at the upper part of the T-shaped through hole (207). The upper surface of the annular pressing plate (209), the upper surface of the screen mesh (208), the inner wall bottom surface of the discharge notch (210), and the inner wall bottom surface of the discharge port (204) are in a horizontally flush state. When one of the screen meshes (208) rotates to align with the through hole (203), the screen mesh (208) and its corresponding annular pressing plate (209) are flush with the bottom surface of the receiving end of the discharge port (204).

4. The automatic rejection vibrating screen according to claim 1, characterized in that, Annular grooves for the rotating disc (206) to rotate are formed in the middle of the C-shaped sector seat (202) and the C-shaped partition plate (205). Sealing elements are provided at the positions where the C-shaped sector seat (202), the C-shaped partition plate (205) contact the rotating disc (206).

5. The automatic rejection vibrating screen according to claim 1, characterized in that, An inspection opening is provided on one side of the top of the screening circular box (201) far from the through hole (203). An inspection door (213) is connected by a hinge at the inspection opening of the screening circular box (201). One of the screen meshes (208) far from the through hole (203) is directly below the inspection opening.

6. The automatic rejection vibrating screen according to claim 5, characterized in that, The vibration component (1) includes a base (101), vibration springs (102), a vibration seat (103), and a vibration motor (104). A plurality of vibration springs (102) are provided. The plurality of vibration springs (102) are evenly distributed along the circumference and are located between the top of the base (101) and the bottom of the vibration seat (103). The upper and lower ends of the vibration springs (102) are respectively fixedly connected to the top of the base (101) and the bottom of the vibration seat (103). The vibration motor (104) is installed at the center position of the bottom of the vibration seat (103). The connecting pipe (4) at the bottommost part is fixed to the top of the vibration seat (103). A bottom discharge port (5) that is in communication with the connecting pipe (4) is also fixed to one side of the bottommost connecting pipe (4). The outer extension end of the bottom discharge port (5) is inclined downward. A slope guide plate (6) is installed inside the bottommost connecting pipe (4). The lower end of the slope guide plate (6) is flush and connected to the inlet of the bottom discharge port (5).

7. The automatic rejection vibrating screen according to claim 6, characterized in that, Multiple vertically distributed screening components (2) are distributed in a deflected and staggered state along the circumference with the connecting pipe (4) as the center. The center line of the connecting pipe (4) coincides with the center line of the base (101) and the vibrating seat (103). The distribution diameter of multiple vibration springs (102) is larger than the outer diameter of the circumferential distribution trajectory of multiple screening round boxes (201). The height of the connecting pipe (4) between two adjacent screening round boxes (201) is greater than the flipping height of the inspection door (213).

8. The automatic rejection vibrating screen according to claim 1, characterized in that, One of the screens (208) in the non-topmost screening assembly (2) is replaced by a flat sealing plate, which is rotated to align with the through hole (203) to achieve the final discharge of the screened material.

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