Powder raw material multi-stage screening device
By designing a multi-stage screening device for powder raw materials with a motor-driven rotating shaft and a double-spiral thrust plate, the problem of disordered vibration and diffusion of powder raw materials in the prior art is solved, and uniform diffusion and efficient screening of powder raw materials are achieved.
Patent Information
- Application Number
- CN202421521270.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing powder screening device has disorder when the powder vibrates and diffuses, resulting in uncontrollable diffusion and poor uniformity.
A multi-stage screening device for powder raw materials is designed, which drives the rotation shaft and the double-spiral thrust plate to rotate through the motor, spreads the powder raw materials evenly and screens through the screening mesh plate, avoiding the disorderly diffusion of vibrating screening.
The uniform diffusion and efficient screening of powder raw materials are achieved, and the uniformity and efficiency of screening are improved.
Smart Images
Figure CN222789724U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of powder screening, in particular to a multi-stage screening device for powder raw materials. Background Art
[0002] In the powder processing process, screening is a step in powder processing. The particle size of the powder can be distinguished by screening, so as to achieve the unification of the particle size of the raw materials.
[0003] Most of the existing screening devices are vibration screening. After feeding, the powder raw materials fall on a fixed position on the screen, and then the powder is diffused outward by vibration, thereby achieving screening through the filter. However, there is disorder when the powder vibrates and diffuses outward, resulting in uncontrollable diffusion and poor uniformity. Therefore, a multi-stage screening device for powder raw materials is proposed to optimize the above-mentioned existing technology. Utility Model Content
[0004] The purpose of the utility model is to provide a multi-stage screening device for powder raw materials to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A multi-stage screening device for powder raw materials comprises a collecting trough, a plurality of screening troughs are arranged at equal distances above the collecting trough, a feed trough is arranged on the top cover of the screening trough, a feeding hopper is embedded in the middle of the feeding trough, the feeding hopper is arranged in a downward conical shape, a round hole is arranged at the bottom of the feeding hopper, a screening mesh plate is fixedly connected inside the screening trough, the mesh numbers of the screening mesh plates in each screening trough are different, the mesh numbers of the screening mesh plates increase from top to bottom, a rotating shaft is rotatably connected to the screening mesh plate, a double-helical pushing plate is fixedly connected to the outer side of the rotating shaft, and the double-helical pushing plate slides in contact with the screening mesh plate. A cover plate adapted to the double-helix pusher plate is provided above the double-helix pusher plate, which is fixedly connected to the screening trough, and the cover plate slides in close contact with the double-helix pusher plate. A collecting hopper is fixedly connected to the cover plate, and the collecting hopper is fixedly connected to the screening trough. The cover plate and the collecting hopper are jointly provided with perforations for powder to fall, and the perforations correspond to the rotating shaft and are adapted to the middle position of the double-helix stripper plate. A motor is fixedly installed on the bottom surface of the collecting trough, and the output end of the motor is fixedly connected to the driving shaft after being inserted into the collecting trough. A switch is fixedly installed on the side wall of the collecting trough, and the switch is externally connected to a power supply, and the motor is electrically connected to the switch through a wire.
[0007] As a further solution of the utility model: the bottom circumference of the collecting trough is fixedly connected with supporting legs, and the bottom of the collecting trough is supported by the supporting legs to prevent the motor from falling on the ground, while keeping the collecting trough stably placed.
[0008] As a further solution of the utility model: a discharge pipe communicating with the screening trough is fixedly connected to the side wall of the screening trough corresponding to the top of the screening mesh plate, and the discharge pipe can be connected to an external collection container.
[0009] As a further solution of the utility model: the bottoms of the feed trough and the screening trough are fixedly connected with collars, the tops of the collecting trough and the screening trough are inserted into the collars and matched with the collars, the collars are fixedly installed with the corresponding collecting trough or the screening trough by bolts, the collars are provided with through holes for the bolts to pass through, and the collecting trough and the screening trough are provided with threaded holes for the bolts to be threadedly connected.
[0010] As a further solution of the utility model: a positioning notch is provided on the circumference of the bottom surface of the collar, and positioning protrusions are fixedly connected to the top outer walls of the collecting trough and the screening trough at positions corresponding to the positioning notch, and the positioning notch and the bolt are distributed in a circle as a whole, with a central angle of 22.5°.
[0011] As a further solution of the utility model: the top ends of the rotating shaft and the driving shaft are fixedly connected with a hexagonal plug block, the bottom end of the rotating shaft is fixedly connected with a hexagonal slot, the hexagonal plug block corresponds to and fits with the hexagonal slot, the rotating shafts can be plug-connected through the hexagonal slot and the hexagonal plug block, and the rotating shaft can be connected to the driving shaft through the hexagonal slot and the hexagonal plug block.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The utility model drives the rotating shaft to rotate through the cooperation of the motor, thereby driving the double-helix pusher plate to rotate, thereby pushing the powder raw materials entering between the screening mesh plate and the cover plate outward to form a spreading effect. The powder raw materials are evenly diffused outward, thereby fully utilizing the mesh of the screening mesh plate for screening, avoiding the disordered diffusion of vibration screening powder.
[0014] 2. The feeding trough, screening trough and collecting trough can be stacked on each other through the setting of the sleeve ring, and axial positioning can be performed through the cooperation of the positioning notch and the positioning protrusion, so that it can be conveniently fixed and installed with bolts. At the same time, the corresponding rotating shaft and driving shaft can be combined and connected through the hexagonal slot and the hexagonal plug, so that one motor can drive multiple rotating shafts to rotate at the same time, so that the device can easily combine the screening troughs, so as to select the appropriate screening mesh plate for screening according to different screening needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of a multi-stage screening device for powder raw materials.
[0016] Figure 2 It is a cross-sectional view of a multi-stage screening device for powder raw materials.
[0017] Figure 3This is a schematic diagram of a screening slot in a multi-stage screening device for powdered raw materials.
[0018] Figure 4 A schematic diagram of the explosion of a screening tank in a multi-stage screening device for powdered raw materials.
[0019] In the figure: 1. collecting trough; 2. screening trough; 3. switch; 4. feeding trough; 5. feeding hopper; 6. screening mesh plate; 7. rotating shaft; 8. double spiral pushing plate; 9. cover plate; 10. collecting hopper; 11. motor; 12. driving shaft; 13. supporting leg; 14. discharging pipe; 15. collar; 16. positioning notch; 17. positioning protrusion; 18. hexagonal plug; 19. hexagonal slot. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figures 1 to 4 In an embodiment of the utility model, a multi-stage screening device for powder raw materials comprises a collecting trough (1), a plurality of screening troughs (2) are arranged at equal distances above the collecting trough (1), a top cover of the screening trough (2) is provided with a feeding trough (4), a feeding hopper (5) is embedded in the middle of the feeding trough (4), the feeding hopper 5 is arranged in a downward conical shape, a round hole is arranged at the bottom of the feeding hopper 5, a screening mesh plate (6) is fixedly connected inside the screening trough (2), the mesh numbers of the screening mesh plates (6) in each screening trough (2) are different, and the mesh numbers of the screening mesh plates (6) increase from top to bottom, a rotating shaft (7) is rotatably connected to and penetrates the screening mesh plate (6), a double-helical pushing plate (8) is fixedly connected to the outer side of the rotating shaft (7), and the double-helical pushing plate (8) is fitted and slid with the screening mesh plate (6), A cover plate (9) matched with the double-helix push plate (8) is arranged above the double-helix push plate (8), the cover plate (9) is fixedly connected to the screening trough (2), the cover plate (9) and the double-helix push plate (8) slide in close contact, a collecting hopper (10) is fixedly connected to the cover plate (9), the collecting hopper (10) is fixedly connected to the screening trough (2), a through hole for powder to fall is provided on the cover plate 9 and the collecting hopper 10, the through hole corresponds to the rotating shaft 7 and is matched with the middle position of the double-helix ejector plate 8, a motor (11) is fixedly installed on the bottom surface of the collecting trough (1), the output end of the motor (11) is fixedly connected to the driving shaft (12) after being inserted into the collecting trough (1), a switch (3) is fixedly installed on the side wall of the collecting trough (1), the switch 3 is externally connected to a power source, and the motor 11 is electrically connected to the switch 3 through a wire.
[0022] The motor 11 drives the rotating shaft 7 to rotate, thereby driving the double-helix pusher plate 8 to rotate, thereby pushing the powder raw materials entering between the screening mesh plate 6 and the cover plate 9 outward to form a spreading effect. The powder raw materials are evenly diffused outward, thereby fully utilizing the mesh of the screening mesh plate 6 for screening, avoiding the disordered diffusion of the vibration screening powder.
[0023] The bottom circumference of the collecting trough (1) is fixedly connected with a support leg (13), and the bottom of the collecting trough 1 is supported by the support leg 13 to prevent the motor 11 from falling on the ground, while keeping the collecting trough 1 stably placed.
[0024] A discharge pipe (14) communicating with the screening trough (2) is fixedly connected to the side wall of the screening trough (2) above the screening mesh plate (6), and the discharge pipe 14 can be connected to an external collection container.
[0025] The bottoms of the feed trough (4) and the screening trough (2) are fixedly connected with a collar (15); the tops of the collecting trough (1) and the screening trough (2) are inserted into the collar (15) and matched with the collar (15); the collar (15) is fixedly installed with the corresponding collecting trough (1) or the screening trough (2) by bolts; a through hole for the bolt to pass through is provided on the collar 15; and threaded holes for the bolt to be threadedly connected are provided on the collecting trough (1) and the screening trough (2).
[0026] A positioning notch (16) is provided on the circumference of the bottom surface of the collar (15); positioning protrusions (17) are fixedly connected to the top outer walls of the collecting trough (1) and the screening trough (2) at locations corresponding to the positioning notch (16); the positioning notch 16 and the bolt are distributed in a circle as a whole, and the central angle is 22.5°.
[0027] The top ends of the rotating shaft (7) and the driving shaft (12) are fixedly connected with a hexagonal plug block (18), and the bottom end of the rotating shaft (7) is fixedly connected with a hexagonal slot (19). The hexagonal plug block (18) corresponds to and fits with the hexagonal slot (19). The rotating shafts 7 can be connected by plugging with the hexagonal slot 19 and the hexagonal plug block 18, and the rotating shaft 7 can be connected with the driving shaft 12 by the hexagonal slot 19 and the hexagonal plug block 18.
[0028] By setting the collar 15, the feed trough 4, the screening trough 2 and the collecting trough 1 can be stacked on each other, and axial positioning is performed by the cooperation of the positioning notch 16 and the positioning protrusion 17, so that it can be conveniently fixed and installed with bolts, and at the same time, the corresponding rotating shaft 7 and the driving shaft 12 can be combined and connected through the hexagonal slot 19 and the hexagonal plug 18, so that one motor 11 can drive multiple rotating shafts 7 to rotate at the same time, so that the device can conveniently combine the screening troughs 2, so as to select the appropriate screening mesh plate 6 for screening according to different screening requirements.
[0029] The working principle of the utility model is:
[0030] When in use, the collecting trough 1 is placed on the ground through the legs 13, and the screening trough 2 with a suitable screening mesh plate 6 is selected and stacked on the top of the collecting trough 1, and the feeding trough 4 is stacked on the top screening trough 2. When stacking, the sleeve ring 15 forms a sleeve limiting effect, and the positioning notch 16 and the positioning protrusion 17 are used to place and position, and then fixed and installed by bolts. When stacking, the hexagonal plug 18 is inserted into the hexagonal slot 19, so that the rotating shaft 7 is connected to the driving shaft 12, and the rotating shaft 7 is connected to the rotating shaft 7. At this time, the powder raw material is put into the feeding hopper 5, and the powder raw material falls into the gathering hopper 10. The powder raw material entering the gathering hopper 10 It falls between the cover plate 9 and the screening mesh plate 6. At this time, the motor 11 drives the rotating shaft 7 to rotate through the driving shaft 12, and the rotating shaft 7 drives the double-helix pushing plate 8 to rotate, thereby pushing the powder raw materials falling between the cover plate 9 and the screening mesh plate 6 outward to achieve a uniform paving effect. During the paving process, the screening mesh plate 6 filters the powder raw materials, and the large particles finally filtered out are pushed to the edge of the screening slot 2 and discharged through the discharge pipe 14, and then continue to be screened through the screening slot 2 below. The powder raw materials of the last stage of screening fall into the collecting slot 1 and are collected. At this time, the powder raw materials in the collecting slot 1 can be discharged through tools or directly dumped.
[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A multi-stage screening device for powdered raw materials, comprising a collecting tank (1), characterized in that: A plurality of screening slots (2) are arranged at equal distances above the collecting slot (1), a feed slot (4) is arranged on the top cover of the screening slot (2), a feeding hopper (5) is embedded in the middle of the feeding slot (4), a screening mesh plate (6) is fixedly connected inside the screening slot (2), the mesh numbers of the screening mesh plates (6) in each screening slot (2) are different, the mesh numbers of the screening mesh plates (6) increase from top to bottom, a rotating shaft (7) is rotatably connected to and penetrates the screening mesh plate (6), a double-screw push plate (8) is fixedly connected to the outer side of the rotating shaft (7), and the double-screw push plate (8) is connected to the screening slot (2). The mesh plate (6) is fitted and slid, a cover plate (9) matching the double-helix push plate (8) is provided above the cover plate (9), the cover plate (9) is fixedly connected to the screening trough (2), the cover plate (9) and the double-helix push plate (8) are fitted and slid, a collecting hopper (10) is fixedly connected to the cover plate (9), the collecting hopper (10) is fixedly connected to the screening trough (2), a motor (11) is fixedly installed on the bottom surface of the collecting trough (1), the output end of the motor (11) is inserted into the collecting trough (1) and fixedly connected to a driving shaft (12), and a switch (3) is fixedly installed on the side wall of the collecting trough (1).
2. A powder raw material multi-stage screening device according to claim 1, characterized in that: A support leg (13) is fixedly connected to the circumference of the bottom surface of the collecting tank (1).
3. A powder raw material multi-stage screening device according to claim 1, characterized in that: A discharge pipe (14) in communication with the screening trough (2) is fixedly connected to the side wall of the screening trough (2) above the screening mesh plate (6).
4. A powder raw material multi-stage screening device according to claim 1, characterized in that: The bottoms of the feed trough (4) and the screening trough (2) are fixedly connected with a collar (15); the tops of the collecting trough (1) and the screening trough (2) are inserted into the collar (15) and matched with the collar (15); the collar (15) is fixedly installed with the corresponding collecting trough (1) or the screening trough (2) by bolts.
5. A powder raw material multi-stage screening device according to claim 4, characterized in that: The bottom circumference of the collar (15) is provided with a positioning notch (16), and the top outer walls of the collecting trough (1) and the screening trough (2) are fixedly connected with positioning protrusions (17) corresponding to the positioning notch (16).
6. A powder raw material multi-stage screening device according to claim 1, characterized in that: The top ends of the rotating shaft (7) and the driving shaft (12) are fixedly connected with a hexagonal plug block (18), and the bottom end of the rotating shaft (7) is fixedly connected with a hexagonal slot (19), and the hexagonal plug block (18) corresponds to and fits with the hexagonal slot (19).