Screening device with dustproof and anti-blocking mechanism

Abstract

The utility model relates to a screening device with a dustproof and anti-blocking mechanism, and belongs to the technical field of screening equipment.The screening device comprises a screening barrel, a sealing barrel is arranged on the outer side of the screening barrel in a surrounding mode, sealing covers are arranged at the two ends of the sealing barrel, and one end of the screening barrel is rotationally connected with the sealing covers through a connecting rod and a rotating shaft; and the other end of the screening barrel is slidably connected with a limiting groove in the sealing barrel through a surrounding block, the rotating shaft penetrates through the sealing cover to be fixedly connected with a rotating motor, and an anti-blocking mechanism is arranged on the outer side of the screening barrel. The screening barrel is sealed through the sealing barrel and the sealing cover, leakage of a large amount of dust is effectively avoided, the rotating motor drives the screening barrel to rotate for screening, in the rotating process, the pressing rod of the anti-blocking mechanism always extrudes the screening barrel, and particles clamped on the screening barrel can be extruded out.

Description

Technical Field

[0001] This application relates to the technical field of screening equipment, and in particular to a screening device with a dustproof and anti-clogging mechanism. Background Technology

[0002] The process of separating bulk materials into different particle sizes by passing them through one or more screens is called screening. A screening machine is a vibrating screening device that uses the relative motion between the bulk material and the screen surface to allow some particles to pass through the screen openings, separating materials such as sand, gravel, and crushed stone into different grades according to particle size. The screening process is generally continuous. After the raw material is fed onto the screening machine (referred to as the screen), materials smaller than the screen opening size pass through the screen openings and are called undersize products; materials larger than the screen opening size are continuously discharged from the screen surface and are called oversize products.

[0003] Screening devices typically encounter the following problems during use: the presence of numerous small particles in the screened material can easily generate significant dust; and the variety of particle sizes during screening can easily clog the screen, affecting screening efficiency.

[0004] Regarding the aforementioned technologies, the inventors believe that they have the following drawbacks: the dust is relatively large, which affects the health of workers; and the different particle sizes can easily clog the screen, affecting the screening efficiency. Utility Model Content

[0005] The purpose of this application is to provide a screening device with a dustproof and anti-clogging mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides a screening device with a dustproof and anti-clogging mechanism, employing the following technical solution:

[0007] A screening device with a dustproof and anti-clogging mechanism includes a screening cylinder, a sealing cylinder sleeved on the outside of the screening cylinder, and sealing caps at both ends of the sealing cylinder. One end of the screening cylinder is rotatably connected to the sealing cap through a connecting rod and a rotating shaft, and the other end of the screening cylinder is slidably connected to the limiting groove inside the sealing cylinder through a surrounding block. A rotating motor is fixedly connected to the rotating shaft through the sealing cap, and an anti-clogging mechanism is provided on the outside of the screening cylinder.

[0008] The anti-clogging mechanism includes a pressure rod, a connecting block, a telescopic rod, a spring, and an extrusion block. The pressure rod is provided in contact with the outer side of the screening cylinder. Both ends of the pressure rod are fixed with connecting blocks. The top of the connecting block is fixedly connected with a telescopic rod. The other end of the telescopic rod is fixed to the inner wall of the sealing cylinder. A spring is sleeved on the thin end of the telescopic rod. Multiple extrusion blocks are arranged around the outer sides of both ends of the screening cylinder. The extrusion blocks are located at the bottom of the pressure rod.

[0009] The sealing cylinder and the sealing cover are used for sealing the screening cylinder, dust leakage is effectively avoided, the rotating motor drives the screening cylinder to rotate and screen, in the rotating process, the pressing rod of the anti-blocking mechanism is always pressed against the screening cylinder, and particles stuck on the screening cylinder can be squeezed out.

[0010] Preferably, the middle part of the screening cylinder is provided in a wire mesh shape, and the screening cylinder and the sealing cylinder are provided with two particle outlets at the bottom of one end close to the rotating motor.

[0011] By adopting the above technical scheme, screening is facilitated.

[0012] Preferably, the pressing block comprises a flat end and a convex end, and the plurality of pressing blocks are sequentially provided with the flat end and the convex end in the counterclockwise direction.

[0013] By adopting the above technical scheme, the pressing rod always first contacts the flat end of the pressing block when the screening cylinder rotates, then the pressing rod is pushed away from the surface of the screening cylinder, and suddenly falls to the convex end, so that the pressing rod hits the screening cylinder under the action of the spring, effectively hammers the particles stuck on the screening cylinder, and further avoids the blocking of the screening cylinder.

[0014] Preferably, a feeding hopper is arranged on the side of the sealing cover away from the rotating motor, and the feeding hopper penetrates through the sealing cover and extends into the screening cylinder.

[0015] By adopting the above technical scheme, dust leakage is avoided.

[0016] Preferably, a dust removal device is arranged on one side of the feeding hopper, and the dust removal device comprises a dust suction pipe, a sedimentation tank, a fan and a collection tank, and the dust suction pipe penetrates through the sealing cover and extends into the screening cylinder.

[0017] By adopting the above technical scheme, dust is sucked into the sedimentation tank under the action of the fan, and then enters the collection tank after sedimentation, so that dust leakage is effectively reduced.

[0018] Preferably, the screening cylinder and the sealing cylinder are both arranged in an inclined manner, and one end close to the feeding hopper is a higher end.

[0019] By adopting the above technical scheme, the particles screened out gradually approach the particle outlets, and are then discharged.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. By arranging the sealing cylinder, the sealing cover and the anti-blocking mechanism, the sealing cylinder and the sealing cover are used for sealing the screening cylinder, dust leakage is effectively avoided, the rotating motor drives the screening cylinder to rotate and screen, in the rotating process, the pressing rod of the anti-blocking mechanism is always pressed against the screening cylinder, and particles stuck on the screening cylinder can be squeezed out;

[0022] 2. By setting the flat end and the convex end, the pressing rod always first contacts the flat end of the extrusion block when the screening drum rotates, then the pressing rod is pushed away from the surface of the screening drum, and after reaching the convex end, it suddenly falls down, and under the action of the spring, the pressing rod hits the screening drum, effectively hammering the particles stuck on the screening drum, further preventing the screening drum from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a structural schematic diagram for embodying the whole in the embodiment of the application.

[0024] Fig. 2 is an exploded structural schematic diagram for embodying the screening drum and the sealing drum in the embodiment of the application.

[0025] Fig. 3 is another angle schematic diagram for embodying part in the embodiment of the application.

[0026] Marked for explanation: 1, screening drum; 11, connecting rod; 12, rotating shaft; 13, surrounding block; 2, sealing drum; 21, limiting groove; 3, sealing cover; 4, rotating motor; 5, anti-blocking mechanism; 51, pressing rod; 52, connecting block; 53, telescopic rod; 54, spring; 55, extrusion block; 551, flat end; 552, convex end; 6, feeding hopper; 7, dust removal device; 71, dust suction pipe; 72, sedimentation tank; 73, fan; 74, collection tank; 8, particle outlet. DETAILED DESCRIPTION

[0027] The following will be combined with the Figs. 1-3 The application is further described in detail.

[0028] The embodiment of the application discloses a screening device with a dustproof and anti-blocking mechanism, which refers to Figs. 1-3 , comprising a screening drum 1, the middle part of the screening drum 1 is provided with a wire mesh, the screening drum 1 is sleeved with a sealing drum 2 on the outside, the bottom of the sealing drum 2 is fixed on the ground through a support, the two ends of the sealing drum 2 are provided with sealing covers 3, and the sealing drum 2 and the sealing covers 3 are fixed and immovable, one end of the screening drum 1 is rotationally connected with the sealing cover 3 through a connecting rod 11 and a rotating shaft 12, the other end of the screening drum 1 is slidingly connected with a limiting groove 21 in the sealing drum 2 through a surrounding block 13, the rotating shaft 12 is fixedly connected with a rotating motor 4 penetrating through the sealing cover 3, the rotating motor 4 drives the screening drum 1 to rotate counterclockwise in the sealing drum 2, the bottom of one end of the screening drum 1 and the sealing drum 2 close to the rotating motor 4 is provided with two particle outlets 8, and the outer side of the screening drum 1 is provided with an anti-blocking mechanism 5.

[0029] The anti-blocking mechanism 5 comprises a pressing rod 51, a connecting block 52, an extension rod 53, a spring 54 and extrusion blocks 55, the pressing rod 51 is arranged outside the screening cylinder 1, the connecting block 52 is fixed at both ends of the pressing rod 51, the extension rod 53 is fixedly connected to the top of the connecting block 52, the other end of the extension rod 53 is fixed to the inner wall of the sealing cylinder 2, the spring 54 is sleeved at the thin end of the extension rod 53, a plurality of extrusion blocks 55 are arranged outside both ends of the screening cylinder 1, the extrusion blocks 55 are arranged at the bottom of the pressing rod 51, when the rotating motor 4 drives the screening cylinder 1 to rotate, the pressing rod 51 always contacts the screening cylinder 1, extrudes the surface of the screening cylinder 1, and presses the particles stuck on the surface of the screening cylinder 1 out, the extrusion block 55 comprises a flat end 551 and a convex end 552, the extrusion blocks 55 are sequentially arranged in the anticlockwise direction, the flat end 551 and the convex end 552, when the pressing rod 51 rotates, the flat end 551 of the extrusion block 55 is always contacted first, then the pressing rod 51 is pushed away from the surface of the screening cylinder 1, and suddenly falls after reaching the convex end 552, under the action of the spring 54, the pressing rod 51 hits the screening cylinder 1, effectively hammers the particles stuck on the screening cylinder 1, and further avoids the blocking of the screening cylinder 1.

[0030] With reference to Figs. 1-2 , the sealing cover 3 away from the rotating motor 4 is provided with a feeding hopper 6, the feeding hopper 6 penetrates the sealing cover 3 and extends into the screening cylinder 1, one side of the feeding hopper 6 is provided with a dust removal device 7, the dust removal device 7 comprises a dust suction pipe 71, a sediment tank 72, a fan 73 and a collection tank 74, the dust suction pipe 71 penetrates the sealing cover 3 and extends into the screening cylinder 1, collects the generated dust, and avoids leakage to the outside to affect the health of workers.

[0031] With reference to Fig. 1 , the screening cylinder 1 and the sealing cylinder 2 are both arranged obliquely, and the end close to the feeding hopper 6 is the higher end, which facilitates the granular material to gradually approach the particle outlet 8 in the screening process, and then is discharged from the screening cylinder 1 and the sealing cylinder 2.

[0032] The implementation principle of the screening device with the dustproof and anti-blocking mechanism 5 is as follows:

[0033] When using the device, the material to be screened is fed into the screening cylinder 1 through the feed hopper 6. The rotary motor 4 drives the screening cylinder 1 to rotate, screening the particles. When the screening cylinder 1 rotates, the pressure rod 51 of the anti-blocking mechanism 5 is squeezed by the spring 54, thereby squeezing out the particles stuck on the screening cylinder 1. During the contact process, the pressure rod 51, under the action of the extrusion block 55, causes the screening cylinder 1 to contact the flat end 551 of the extrusion block 55, and then suddenly falls down when it reaches the protruding end 552. Under the action of the spring 54, the pressure rod 51 hits the screening cylinder 1, repeating the cycle, effectively hammering down the particles stuck on the screening cylinder 1, further preventing the screening cylinder 1 from clogging. During the screening process, the dust suction pipe 71 of the dust removal device 7 sucks the dust generated in the screening cylinder 1 into the sedimentation tank 72 to prevent dust leakage. The screened particles are discharged from the screening cylinder 1 and the sealing cylinder 2 through the particle outlet 8.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A screening device with dust and clogging prevention mechanism, characterized in that: Including screening cylinder (1), the sealing cylinder (2) is provided with sealing cover (3) on both ends, one end of the screening cylinder (1) is rotatably connected with the sealing cover (3) through connecting rod (11) and rotating shaft (12), the other end of the screening cylinder (1) is slidably connected with the limiting groove (21) in the sealing cylinder (2) through the surrounding block (13), the rotating shaft (12) is fixedly connected with the rotary motor (4) penetrating the sealing cover (3), the outer side of the screening cylinder (1) is provided with anti-blocking mechanism (5). The anti-blocking mechanism (5) comprises a pressing rod (51), a connecting block (52), a telescopic rod (53), a spring (54) and an extrusion block (55), the pressing rod (51) is provided on the outer side of the screening cylinder (1), the connecting block (52) is fixedly connected to the both ends of the pressing rod (51), the telescopic rod (53) is fixedly connected to the top of the connecting block (52), the other end of the telescopic rod (53) is fixed on the inner wall of the sealing cylinder (2), the spring (54) is sleeved on the thin end of the telescopic rod (53), a plurality of extrusion blocks (55) are arranged on the outer side of the both ends of the screening cylinder (1), and the extrusion blocks (55) are arranged at the bottom of the pressing rod (51).

2. Sieving device with dust and blockage prevention mechanism (5) according to claim 1, characterized in that: The middle part of the screening cylinder (1) is provided with a wire mesh, and the bottom of the one end of the screening cylinder (1) and the sealing cylinder (2) close to the rotary motor (4) is provided with two particle outlets (8).

3. Sieving device with dust and blockage prevention mechanism (5) according to claim 1, characterized in that: The extrusion block (55) comprises a flat end (551) and a convex end (552), and a plurality of extrusion blocks (55) are sequentially provided with flat ends (551) and convex ends (552) in the counterclockwise direction.

4. Sieving device with dust and blockage prevention mechanism (5) according to claim 1, characterized in that: The side of the sealing cover (3) away from the rotary motor (4) is provided with a feeding hopper (6), and the feeding hopper (6) penetrates the sealing cover (3) and extends into the screening cylinder (1).

5. Sieving device with dust and blockage prevention mechanism (5) according to claim 4, characterized in that: The side of the feeding hopper (6) is provided with a dust removal device (7), and the dust removal device (7) comprises a dust suction pipe (71), a sedimentation tank (72), a fan (73) and a collection tank (74), and the dust suction pipe (71) penetrates the sealing cover (3) and extends into the screening cylinder (1).

6. Sieving device with dust and blockage prevention mechanism (5) according to claim 5, characterized in that: The screening cylinder (1) and the sealing cylinder (2) are both inclined, and the end close to the feeding hopper (6) is the higher end.

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