Multi-stage screening and conveying equipment

Abstract

The invention discloses multi-stage screening and conveying equipment, and relates to the technical field of screening equipment. Comprising a screening shell, a screening mechanism used for conveying materials is arranged on the screening shell, the screening mechanism comprises an adjusting assembly, the adjusting assembly comprises two sets of supporting shafts connected in the screening shell in a penetrating mode, the outer walls of the supporting shafts are rotationally connected with sliding rail supports, and first screening nets connected through locking assemblies are arranged in the sliding rail supports; after entering the screening shell, materials are primarily screened through the first screening net, large particles or impurities are removed, then the materials fall into the second screening net to be screened more finely, particles with different particle sizes are further separated out, and the screening efficiency can be remarkably improved through the classified screening mode; the materials are classified more accurately according to the particle size, it is ensured that the screened materials meet the specification requirement, and the multi-stage screening conveying equipment can meet the screening requirements of the materials of different types and properties.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, in particular to a multi-stage screening and conveying equipment. Background Art

[0002] In the modern production process, material screening is an indispensable and important link, which is directly related to the quality and production efficiency of the product. In the material handling and processing industry, screening equipment is one of the key links. It is used to separate materials of different particle sizes to ensure the quality and efficiency of the subsequent processing process.

[0003] Most screening equipment in the prior art uses a single screening mesh to screen materials. This design not only has low screening efficiency, but also makes it difficult to accurately separate materials of different particle sizes. At the same time, the angle and position of the screening mesh of traditional screening equipment are often fixed and cannot be flexibly adjusted according to material properties and screening requirements, resulting in poor equipment versatility and flexibility. In addition, the equipment lacks an effective vibration mechanism during the screening process, resulting in insufficient contact between the material and the screen, further reducing the screening efficiency. Long-term vibration can easily damage the equipment. To this end, the present invention provides a multi-stage screening and conveying device. Summary of the invention

[0004] Technical issues solved In view of the shortcomings of the prior art, the present invention provides a multi-stage screening and conveying equipment, which solves the problem that most of the screening equipment in the prior art adopts a single screening mesh for material screening. This design not only has low screening efficiency, but also makes it difficult to accurately separate materials of different particle sizes. At the same time, the angle and position of the screening mesh of traditional screening equipment are often fixed and cannot be flexibly adjusted according to material characteristics and screening requirements, resulting in poor versatility and flexibility of the equipment, and the equipment lacks an effective vibration mechanism during the screening process, resulting in insufficient contact between the material and the screen, further reducing the screening efficiency, and then long-term vibration is likely to cause damage to the equipment.

[0005] Technical Solution To achieve the above object, the present invention provides the following technical solutions: A multi-stage screening and conveying device comprises a screening housing, on which a screening mechanism for conveying materials is arranged, the screening mechanism comprising: An adjusting assembly comprises two groups of supporting shafts connected through the inside of a screening housing, the outer wall of the supporting shaft is rotatably connected with a slide rail bracket, the inside of the slide rail bracket is provided with a first screening net or a second screening net connected by a locking assembly, the second screening net is provided below the first screening net, and the lower end surface of the slide rail bracket is provided with a supporting roller shaft connected by a pushing assembly; The shaking assembly includes an L-shaped plate connected to the outer wall of the screening shell through a lifting assembly, and two cams are rotatably arranged on the L-shaped plate to cooperate with the lower ends of two slide rail brackets respectively, and a driving assembly for driving the cam to rotate is transmission-connected to the cam.

[0006] As a further solution of the present invention, the locking assembly includes a slider slidably connected inside the slide rail bracket, the first screening net is fixedly connected to the inner wall of the slider, and a bolt for locking the slider and the slide rail bracket is arranged inside the lower end of the slide rail bracket.

[0007] As a further solution of the present invention, the first screening net and the second screening net are distributed in a V shape, and a conveyor belt for material transportation is fixed to the top side wall of the screening shell.

[0008] As a further solution of the present invention, the pushing assembly includes an electric push rod fixed to the first screening net at the side discharge port of the screening shell, the telescopic end of the electric push rod is fixed with a fixed plate, the upper end of the fixed plate is provided with a U-shaped frame connected by a shock absorbing assembly, and the support roller shaft is located inside the U-shaped frame and is rotatably connected.

[0009] As a further solution of the present invention, the shock absorbing assembly includes a shock absorbing spring evenly fixed on the upper end surface of the fixed plate, the U-shaped frame is located at the upper end of the shock absorbing spring, the shock absorbing spring is located outside the damping support rod, and the damping support rod is fixedly connected to the fixed plate.

[0010] As a further solution of the present invention, a pair of support plates are fixed to the lower end surface of the slide rail bracket, and the support roller shaft is disposed against the lower end of the support plate (406).

[0011] As a further solution of the present invention, the lifting assembly includes a hydraulic rod fixed to a side wall of the screening shell, and the L-shaped plate is fixedly connected to the telescopic end of the hydraulic rod.

[0012] As a further solution of the present invention, the driving assembly includes a motor arranged on an L-shaped plate, and two transmission shafts are rotatably connected to the long plate of the L-shaped plate. Cams are fixed on one end of the two transmission shafts extending into the interior of the screening shell, and the two cams are respectively fitted with the lower end surfaces of the two slide rail brackets. The two transmission shafts rotate synchronously through a transmission wheel and a transmission belt, and the output end of the motor is transmission-connected to any transmission shaft. An annular groove is provided on the side of the screening shell to facilitate the sliding of the transmission shaft.

[0013] As a further scheme of the present invention, a protective shell is fixed to the top of the screening shell, a discharging shell for discharging is provided at the lower end of the screening shell, supporting legs are fixed to the four ends of the lower end surface of the screening shell, a first buffer plate is fixed to one side of the inner wall of the supporting leg, a second buffer plate is fixed to the other side of the inner wall of the supporting leg, the second buffer plate is located below the first buffer plate, a pair of supporting slide rails are fixed to the inner wall of the supporting leg, a filter shell is slidably connected inside the supporting slide rails, pull rods are fixed to the two side walls of the filter shell, a collecting shell is provided below the filter shell, and the gap of the filter shell is smaller than the second screening net.

[0014] Beneficial Effects Compared with the prior art, the present invention provides a multi-stage screening and conveying device, which has the following beneficial effects: 1. The material screening equipment of the present invention adopts a multi-stage screening structure. After the first screening net removes large particles of impurities, the second screening net finely separates particles of different sizes. Multi-stage screening improves efficiency, and the height of the supporting roller is adjusted by an electric push rod, and the sliding rail bracket is linked to dynamically adjust the inclination of the screen to optimize the material flow path. This design can adapt to different material characteristics, enhance screening accuracy and flexibility through angle control, achieve accurate particle size classification, and meet diversified screening needs.

[0015] 2. The screening equipment of the present invention drives the cam through the transmission shaft to push the screening net in the slide rail bracket to produce periodic vibration, thereby promoting uniform dispersion of materials, avoiding accumulation and blockage, and improving screening efficiency.

[0016] 3. The vibration of the screen of the present invention can reduce the adhesion of fine particles and prevent the blockage of the holes. The slide rail bracket is supported by the support roller bearing, and cooperates with the shock-absorbing spring and the damping rod to absorb the vibration energy, reduce the impact of the equipment, ensure the stability and continuity of operation, and meet the needs of high-precision screening.

[0017] 4. The first screening net of the present invention is slidably connected to the slide rail bracket through a slider, and the slider is fixed with bolts. When disassembling, the bolts can be loosened to replace it. The detachable design allows users to quickly replace the screen according to production needs without disassembling the equipment, thereby improving maintenance efficiency and flexibility. At the same time, it is convenient for cleaning and repair, and is adaptable to various screening requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the screening housing of the present invention; Figure 3 It is a schematic diagram of the lower end surface structure of the slide rail bracket of the present invention; Figure 4 It is a schematic diagram of the support roller shaft connection structure of the present invention; Figure 5It is a schematic diagram of the connection structure between the first screening net and the slide rail bracket of the present invention; Figure 6 It is a schematic diagram of the main structure of the ring groove of the present invention; Figure 7 It is a schematic diagram of the L-shaped plate connection main body structure of the present invention.

[0019] In the figure: 1. screening shell; 2. conveyor belt; 3. support shaft; 301. slide rail bracket; 302. slider; 303. first screening net; 304. second screening net; 305. bolt; 4. electric push rod; 401. fixing plate; 402. shock-absorbing spring; 403. damping support rod; 404. U-shaped frame; 405. support roller; 406. support plate; 5. hydraulic rod; 501. L-shaped plate; 502. motor; 503. transmission shaft; 504. cam; 505. ring groove; 6. protective shell; 601. unloading shell; 602. support leg; 603. first buffer plate; 604. second buffer plate; 605. support slide rail; 606. filter shell; 607. pull rod; 608. collection shell. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] See also Figure 1-Figure 7 The present invention provides a technical solution: a multi-stage screening and conveying device, comprising a screening housing 1, on which a screening mechanism for conveying materials is arranged, and the screening mechanism comprises: An adjusting assembly includes two groups of supporting shafts 3 connected through the inside of the screening housing 1, the outer wall of the supporting shaft 3 is rotatably connected with a slide rail bracket 301, the inside of the slide rail bracket 301 is provided with a first screening net 303 or a second screening net 304 connected by a locking assembly, the second screening net 304 is provided below the first screening net 303, and the lower end surface of the slide rail bracket 301 is provided with a supporting roller shaft 405 connected by a pushing assembly; The shaking assembly includes an L-shaped plate 501 connected by a lifting assembly on the outer wall of the screening shell 1, and two cams 504 respectively cooperating with the lower ends of the two slide rail brackets 301 are rotatably arranged on the L-shaped plate 501, and a driving assembly for driving the cam 504 to rotate is transmission-connected to the cam 504.

[0024] In a preferred embodiment, the locking assembly includes a slider 302 slidably connected to the inside of the slide rail bracket 301, the first screening net 303 is fixedly connected to the inner wall of the slider 302, and a bolt 305 for locking the slider 302 and the slide rail bracket 301 is arranged inside the lower end of the slide rail bracket 301, the first screening net 303 is slidable with the slide rail bracket 301 through the slider 302, and then the slider 302 is locked to the slide rail bracket 301 through the bolt 305, when the first screening net 303 is disassembled, the bolt 305 is loosened to realize the detachable effect of the first screening net 303, through the detachable design, the user can quickly replace the first screening net 303 according to actual needs to adapt to different production requirements, improve the flexibility and adaptability of the equipment, and clean, repair or replace it without disassembling the entire equipment, which greatly improves the maintenance efficiency and convenience.

[0025] In a preferred embodiment, the first screening net 303 and the second screening net 304 are distributed in a V shape, and a conveyor belt 2 for material transportation is fixed to the top side wall of the screening shell 1. The conveyor belt 2 is set to deliver the material to the top of the screening shell 1, and then first falls on the first screening net 303 for the first step of screening, and then falls into the second screening net 304 for further screening. After entering the screening shell 1, the specific material first passes through the first screening net 303 for preliminary screening to remove larger particles or impurities. Subsequently, the material falls into the second screening net 304 for more detailed screening to further separate particles of different particle sizes. The screening efficiency can be significantly improved, the screening time can be reduced, and the material can be more accurately graded according to the particle size to ensure that the screened material meets the specification requirements. The multi-stage screening and conveying equipment can adapt to the screening needs of materials of different types and properties.

[0026] In a preferred embodiment, the pushing assembly includes an electric push rod 4 fixed at the side discharge port of the screening shell 1 with the first screening net 303, a fixed plate 401 is fixed to the telescopic end of the electric push rod 4, a U-shaped frame 404 connected by a shock absorbing assembly is arranged at the upper end of the fixed plate 401, a support roller 405 is located inside the U-shaped frame 404 and is rotatably connected, the shock absorbing assembly includes a shock absorbing spring 402 evenly fixed on the upper end surface of the fixed plate 401, the U-shaped frame 404 is located at the upper end of the shock absorbing spring 402, the shock absorbing spring 402 is located outside the damping support rod 403, and the damping support rod 403 is fixedly connected to the fixed plate 401, a pair of support plates 406 are fixed to the lower end surface of the slide rail bracket 301, the support plate 406 is slidably connected to the support roller 405, and the fixed plate 401 can be raised and lowered by the electric push rod 4. The support roller 405 is height-adjusted, and then the support roller 405 and the support plate 406 are pushed and slid, thereby pushing the slide rail bracket 301 on the support plate 406, and realizing the angle adjustment of the slide rail bracket 301 inside the screening shell 1 through the support shaft 3, so as to adjust the angle of the screening net according to the needs of screening, which helps to optimize the flow path of the material and improve the screening efficiency. At the same time, it enables the equipment to adapt to different material characteristics and screening requirements, improves the versatility and flexibility of the equipment, helps to more accurately separate materials of different particle sizes, and improves the screening accuracy. The U-shaped frame 404 performs a certain shock-absorbing and buffering effect on the fixed plate 401 through the shock-absorbing spring 402 and the damping support rod 403, thereby ensuring that the support roller 405 is protected when the slide rail bracket 301 is pushed.

[0027] In a preferred embodiment, the lifting assembly includes a hydraulic rod 5 fixed to a side wall of the screening housing 1, an L-shaped plate 501 is fixedly connected to the telescopic end of the hydraulic rod 5, a driving assembly includes a motor 502 arranged on the L-shaped plate 501, two transmission shafts 503 are rotatably connected to the long plate of the L-shaped plate 501, two transmission shafts 503 extending to the inner end of the screening housing 1 are fixed with cams 504, and the two cams 504 are respectively fitted with the lower end surfaces of the two slide rail brackets 301, the two transmission shafts 503 rotate synchronously through the transmission wheel and the transmission belt, the output end of the motor 502 is transmission-connected to any transmission shaft 503, a ring groove 505 for facilitating the sliding of the transmission shaft 503 is provided on the side of the screening housing 1, when the transmission shaft 503 is set to rotate, the cam 504 is driven to work, and then the cam 504 is located at the lower end surface of the slide rail bracket 301, so that the slide rail bracket 3 01 The screening net inside is pushed back and forth by the support shaft 3 under the action of the cam 504, so that the screening net can produce periodic vibration or small displacement, which helps to break the static balance of the material on the screening net and make the material contact with the screen more fully, thereby improving the screening efficiency. At the same time, the distribution of the material on the screening net is more uniform, avoiding local accumulation or blockage, ensuring the continuity and stability of the screening process, and then helping to reduce the adhesion of fine particles on the screen, avoiding blockage of the screen, and the slide rail bracket 301 is supported by the support roller shaft 405, and then due to the action of the shock-absorbing spring 402 and the damping support rod 403, it is ensured that the slide rail bracket 301 reduces the vibration damage to the equipment, and when the slide rail bracket 301 is adjusting the angle, the set L-shaped plate 501 can be raised and lowered by the hydraulic rod 5 to ensure the contact between the cam 504 and the slide rail bracket 301.

[0028] In a preferred embodiment, a protective shell 6 is fixed to the top of the screening shell 1, a material discharge shell 601 for discharging is provided at the lower end of the screening shell 1, and support legs 602 are fixed to the four ends of the lower end surface of the screening shell 1, a first buffer plate 603 is fixed to one side of the inner wall of the support leg 602, and a second buffer plate 604 is fixed to the other side of the inner wall of the support leg 602, and the second buffer plate 604 is located below the first buffer plate 603, and a pair of support slide rails 605 are fixed to the inner wall of the support leg 602, and a filter housing 606 is slidably connected inside the support slide rails 605, and a pull rod 607 is fixed to the two side walls of the filter housing 606, and a collecting housing 608 is provided below the filter housing 606, and the gap of the filter housing 606 is smaller than the second screening net 3 04. The protective shell 6 is used to slightly block the debris particles generated by the internal filtration of the screening shell 1. The material filtered by the first screening net 303 and the second screening net 304 is discharged through the unloading shell 601. The material slides onto the second buffer plate 604 through the first buffer plate 603, and finally falls into the filter shell 606, reducing the direct impact of the material on the filter shell 606 and protecting the equipment. Then, the pull rods 607 on both sides of the filter shell 606 are used to manually shake it along the support slide rail 605 for filtering again, so as to further and more accurately classify the material according to the particle size, and the final material falls on the collecting shell 608 to realize multi-stage screening of the material.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] During operation, after entering the screening housing 1, the material first passes through the first screening net 303 for preliminary screening to remove larger particles or impurities. Subsequently, the material falls into the second screening net 304 for more detailed screening to further separate particles of different sizes. Then, the fixed plate 401 can be raised and lowered by the electric push rod 4, so as to adjust the height of the support roller 405. Then, the support roller 405 and the support plate 406 push and slide, so as to push the slide rail bracket 301 on the support plate 406, so as to realize the slide rail bracket 301 on the screening housing 1 through the support shaft 3. The internal angle is adjusted, so that the angle of the screening net can be adjusted according to the needs of screening, which helps to optimize the flow path of the material, and when the transmission shaft 503 is set to rotate, the cam 504 is driven to work, and then the cam 504 is located on the lower end surface of the slide rail bracket 301, so that the screening net inside the slide rail bracket 301 is reciprocated by the support shaft 3 under the action of the cam 504, so that the screening net can produce periodic vibration or small displacement, which helps to break the static balance of the material on the screening net, so that the material is more fully in contact with the screen, thereby improving the screening efficiency; Finally, the first screening net 303 is set to slide with the slide rail bracket 301 through the slider 302, and then the slider 302 is locked on the slide rail bracket 301 by the bolt 305. When the first screening net 303 is to be disassembled, the bolt 305 can be loosened to achieve the detachable effect of the first screening net 303. Through the detachable design, the user can quickly replace the first screening net 303 according to actual needs to adapt to different production requirements, thereby improving the flexibility and adaptability of the equipment.

[0031] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A multi-stage screening and conveying device, comprising a screening housing (1), characterized in that: The screening housing (1) is provided with a screening mechanism for conveying materials, and the screening mechanism comprises: An adjustment component, comprising two groups of support shafts (3) connected and extending through the interior of a screening housing (1); the outer wall of the support shaft (3) is rotatably connected to a slide rail bracket (301); a first screening net (303) or a second screening net (304) connected via a locking component is disposed inside the slide rail bracket (301); a second screening net (304) is disposed below the first screening net (303); and a support roller shaft (405) connected via a push assembly is disposed on the lower end surface of the slide rail bracket (301); The shaking assembly comprises an L-shaped plate (501) connected via a lifting assembly and arranged on the outer wall of a screening housing (1); two cams (504) respectively cooperating with the lower ends of two slide rail brackets (301) are rotatably arranged on the L-shaped plate (501); and a driving assembly for driving the cams (504) to rotate is transmission-connected to the cams (504).

2. A multi-stage screening and conveying device according to claim 1, characterized in that: The locking assembly comprises a slider (302) slidably connected inside the slide rail bracket (301), the first screening net (303) is fixedly connected to the inner wall of the slider (302), and a bolt (305) for locking the slider (302) and the slide rail bracket (301) is arranged inside the lower end of the slide rail bracket (301).

3. The multi-stage screening and conveying equipment according to claim 1, characterized in that: The first screening net (303) and the second screening net (304) are arranged in a V-shape, and a conveyor belt (2) for material conveyance is fixed to the top side wall of the screening housing (1).

4. The multi-stage screening and conveying equipment according to claim 1, characterized in that: The push assembly comprises an electric push rod (4) fixed to the first screening net (303) at the side discharge port of the screening housing (1); a fixed plate (401) is fixed to the telescopic end of the electric push rod (4); a U-shaped frame (404) connected via a shock absorbing assembly is arranged at the upper end of the fixed plate (401); and the support roller shaft (405) is located inside the U-shaped frame (404) and is rotatably connected.

5. The multi-stage screening and conveying equipment according to claim 4, characterized in that: The shock absorbing assembly comprises a shock absorbing spring (402) evenly fixed on the upper end surface of a fixing plate (401), the U-shaped frame (404) is located at the upper end of the shock absorbing spring (402), the shock absorbing spring (402) is located outside a damping support rod (403), and the damping support rod (403) is fixedly connected to the fixing plate (401).

6. The multi-stage screening and conveying equipment according to claim 2, characterized in that: A pair of support plates (406) are fixed to the lower end surface of the slide rail bracket (301), and the support roller shaft (405) is disposed against the lower end of the support plate (406).

7. The multi-stage screening and conveying equipment according to claim 4, characterized in that: The lifting assembly comprises a hydraulic rod (5) fixed to a side wall of the screening housing (1), and the L-shaped plate (501) is fixedly connected to the telescopic end of the hydraulic rod (5).

8. The multi-stage screening and conveying equipment according to claim 1, characterized in that: The driving assembly comprises a motor (502) arranged on an L-shaped plate (501); two transmission shafts (503) are rotatably connected to the long plate of the L-shaped plate (501); a cam (504) is fixed to one end of the two transmission shafts (503) extending into the interior of the screening housing (1); and the two cams (504) are respectively fitted with the lower end surfaces of two slide rail brackets (301); the two transmission shafts (503) rotate synchronously via a transmission wheel and a transmission belt; the output end of the motor (502) is transmission-connected to any one of the transmission shafts (503); and a ring groove (505) is provided on the side of the screening housing (1) for facilitating the sliding of the transmission shaft (503).

9. The multi-stage screening and conveying equipment according to claim 1, characterized in that: A protective housing (6) is fixed to the top of the screening housing (1), a material discharge housing (601) for discharging materials is provided at the lower end of the screening housing (1), supporting legs (602) are fixed to the four ends of the lower end surface of the screening housing (1), a first buffer plate (603) is fixed to one side of the inner wall of the supporting leg (602), a second buffer plate (604) is fixed to the other side of the inner wall of the supporting leg (602), the second buffer plate (604) is located below the first buffer plate (603), a pair of supporting slide rails (605) are fixed to the inner wall of the supporting leg (602), a filter housing (606) is slidably connected inside the supporting slide rails (605), pull rods (607) are fixed to the two side walls of the filter housing (606), a collecting housing (608) is provided below the filter housing (606), and the gap of the filter housing (606) is smaller than the second screening net (304).

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