Powder screening device

Abstract

The utility model relates to a powder screening device which comprises a screening structure, a feeding structure and a sealing structure. Powder materials are added into the hopper, then the hopper is covered with the upper cover, the hopper is sealed, meanwhile, the telescopic piece drives the cover to descend, the cover covers the upper end of the upper barrel, then the spiral conveying blade rotates, and the powder materials in the hopper are conveyed in the direction of the discharging pipe in the inclined barrel and fall into the upper barrel through the threaded hose and the discharging channel. The vibrating plate drives the upper barrel body and the lower barrel body to vibrate, powder materials in the upper barrel body fall into the lower barrel body through the screen, powder with the corresponding particle size is in the lower barrel body, large particle powder is left in the upper barrel body, and the screened powder materials are discharged from the first outlet and the second outlet correspondingly. And meanwhile, through the action of the closed structure, dust pollution is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of screening technology, specifically relating to a convenient powder screening device. Background Technology

[0002] When producing powder materials with particle sizes of 10-100 micrometers, a vibrating screen is used for sieving. The vibrating screen is a high-precision fine powder sieving machine, which is widely used for sieving and filtering granular, powder, and viscous materials.

[0003] like Figure 1 As shown, there is an existing type of vibrating screen 1. When in use, the operator adds the mixed powder material into the upper cylinder 2. Then, the upper cylinder 2 and the lower cylinder 3 vibrate. The powder material passes through the screen 4 at the lower end of the upper cylinder 2, so that the powder material of the corresponding particle size falls into the lower cylinder 3, while the larger powder material remains in the upper cylinder 2. The material in the upper cylinder 2 is discharged through the first outlet 5, and the powder material in the lower cylinder 3 is discharged through the second outlet 6.

[0004] However, existing rotary vibrating screens require personnel to lift the powder material and pour it into the upper cylinder when screening powder materials, which consumes a lot of manpower in the feeding process; and when the rotary vibrating screen is working, the vibrating powder will splash into the air, causing dust pollution. Summary of the Invention

[0005] Therefore, this utility model provides a powder sieving device to solve the problems of inconvenient feeding and dust splashing during vibration in the prior art.

[0006] To achieve the above objectives, this utility model provides a powder sieving device, including a sieving structure, a feeding structure, and a closing structure;

[0007] The screening structure includes an annular base, a vibrating plate, an upper cylinder, a lower cylinder, and a screen. The upper end of the annular base is provided with multiple spring structures, the upper end of the multiple spring structures is provided with the vibrating plate, the upper end of the vibrating plate is provided with the lower cylinder, the upper end of the lower cylinder is provided with the upper cylinder, the screen is provided at the lower end of the upper cylinder, the upper cylinder is provided with a first outlet, and the lower cylinder is provided with a second outlet.

[0008] The feeding structure is located on one side of the screening structure. The feeding structure includes an inclined cylinder, a spiral conveying blade, and a hopper. The inclined cylinder is equipped with support feet. The hopper is located on the upper side of the lower end of the inclined cylinder. The spiral conveying blade is rotatably installed inside the inclined cylinder. The discharge pipe is located on the lower side of the upper end of the inclined cylinder.

[0009] The closed structure comprises a cover, an extension piece and a threaded hose, the upper end of the threaded hose is connected with the lower end of the discharge pipe, the lower end of the threaded hose is connected with the discharge passage of the upper end of the cover, the extension piece is connected with the discharge pipe, the movable end of the extension piece is connected with the cover for driving the cover to ascend or descend, and the cover is arranged above the upper cylinder and does not contact the upper cylinder.

[0010] The above beneficial effects are that the powder material is added into the hopper, then the cover is covered on the hopper to close the hopper, the extension piece drives the cover to descend, the cover covers the upper end of the upper cylinder, then the spiral conveying blade rotates, the powder material in the hopper is conveyed to the direction of the discharge pipe in the inclined cylinder, falls into the upper cylinder through the threaded hose and the discharge passage, the upper cylinder and the lower cylinder are vibrated through the spring structure and the vibration plate, the powder material in the upper cylinder falls to the lower cylinder through the screen, the powder of corresponding size is in the lower cylinder, the relatively large particle powder is left in the upper cylinder, and the screened powder material is discharged from the first outlet and the second outlet respectively.

[0011] One preferred solution is that the middle part of the vibration plate is provided with a vibration motor.

[0012] One preferred solution is that the inclined cylinder is provided with a rotating shaft, and the spiral conveying blade is arranged on the rotating shaft.

[0013] One preferred solution is that the extension piece has two, the two extension pieces are both extension cylinders, the ends of the two extension cylinders are respectively arranged on the extension plate, the inner end of the extension plate is connected with the outer wall of the discharge pipe, and the upper ends of the two extension cylinders are connected with the cover.

[0014] One preferred solution is that the knocking assembly is further arranged, the knocking assembly has two groups, the two groups of knocking assemblies are respectively arranged on the two sides of the discharge pipe, the two groups of knocking assemblies both comprise a driving motor, a vertical plate and a knocking plate, the vertical plate is arranged on the extension plate, the driving motor is arranged on the vertical plate, the output shaft of the driving motor penetrates through the vertical plate and is connected with the lower end of the knocking plate, and the upper end of the knocking plate is provided with a knocking column.

[0015] One preferred solution is that the hopper is provided with a stirring piece, the stirring piece comprises a stirring shaft and stirring rods, the stirring shaft is arranged in the hopper, and a plurality of stirring rods are arranged in the radial direction of the stirring shaft.

[0016] The screening structure is a rotary vibration screen. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in detail below in combination with the drawings and specific embodiments.

[0018] Figure 1 It is the structural schematic diagram of prior rotary vibration screen;

[0019] Figure 2 It is the structural schematic diagram of a powder screening device of the utility model;

[0020] Figure 3 It is the structural schematic diagram of the side sectional view plane view of a powder screening device of the utility model;

[0021] Figure 4 It is Figure 2 The enlarged structural schematic diagram of A area in figure.

[0022] In the figure: 10, screening structure;11, annular base;12, vibration plate;13, upper cylinder;14, lower cylinder;15, screen;16, spring structure;17, first outlet;18, second outlet;20, feeding structure;21, obliquely placed cylinder;22, spiral conveying blade;23, hopper;24, discharge pipe;30, closed structure;31, cover;32, telescopic part;33, threaded hose;34, discharge channel;41, vibration motor;42, rotating shaft;321, telescopic pneumatic cylinder;322, extension plate;50, knocking assembly;51, vertical plate;52, knocking plate;53, knocking column. Specific embodiments

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. In the following description, a large number of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore, the utility model is not limited by the specific embodiments disclosed below.

[0024] As Figures 1 to 4 Indicated, the utility model provides a kind of powder screening device, including screening structure 10, feeding structure 20 and closed structure 30;

[0025] The screening structure 10 includes annular base 11, vibration plate 12, upper cylinder 13, lower cylinder 14 and screen 15, the upper end of the annular base 11 is provided with a plurality of spring structures 16, the upper end of a plurality of the spring structures 16 is provided with the vibration plate 12, the upper end of the vibration plate 12 is provided with the lower cylinder 14, the upper end of the lower cylinder 14 is provided with the upper cylinder 13, the screen 15 is arranged in upper cylinder 13 lower end, the upper cylinder 13 is provided with first outlet 17, and the lower cylinder 14 is provided with second outlet 18;

[0026] The feeding structure 20 is arranged on one side of the screening structure 10, and the feeding structure 20 comprises an inclined cylinder 21, a spiral conveying blade 22 and a hopper 23, a supporting leg 25 is arranged on the inclined cylinder 21, the supporting leg 25 is used to contact the ground to ensure the stability of the inclined cylinder 21, the hopper 23 is arranged on the lower end of the inclined cylinder 21, and the spiral conveying blade 22 is rotatably arranged in the inclined cylinder 21, and a discharge pipe 24 is arranged on the upper end of the inclined cylinder 21.

[0027] The sealing structure 30 comprises a cover 31, an extension piece 32 and a threaded hose 33, the upper end of the threaded hose 33 is connected with the lower end of the discharge pipe 24, the lower end of the threaded hose 33 is connected with a discharge passage 34 on the upper end of the cover 31, the extension piece 32 is used to drive the cover 31 to ascend or descend, and the cover 31 is arranged above the upper cylinder body 13 and does not contact the upper cylinder body 13.

[0028] In the operation process, powder materials are added into the hopper 23, then a cover is arranged on the hopper 23 to seal the hopper 23, the extension piece 32 drives the cover 31 to descend, the cover 31 covers the upper end of the upper cylinder body 13, then the spiral conveying blade 22 rotates, the powder materials in the hopper 23 are conveyed in the inclined cylinder 21 to the discharge pipe 24, fall into the upper cylinder body 13 through the threaded hose 33 and the discharge passage 34, the upper cylinder body 13 and the lower cylinder body 14 are vibrated through the action of the spring structure 16 and the vibration plate 12, the powder materials in the upper cylinder body 13 fall into the lower cylinder body 14 through the screen 15, the powder materials of different sizes are in the lower cylinder body 14, the relatively large particle powder remains in the upper cylinder body 13, and the screened powder materials are discharged from the first outlet 17 and the second outlet 18 respectively. Through the action of the feeding structure 20, the labor of personnel can be greatly saved, the powder materials are added into the upper cylinder body 13 in a sealed space, and through the action of the sealing structure 30, the splashing degree of the powder materials during screening is obviously reduced, and dust pollution is reduced.

[0029] The extension piece 32 comprises a fixed end and a movable end, the movable end can drive the cover 31 to ascend or descend, and the fixed end is stably arranged relative to the discharge pipe 24, so that the cover 31 can cover the opening of the lower upper cylinder body 13 but the two are not in direct contact, so as to avoid affecting the vibration screening process. Preferably, the covering area of the cover 31 is larger than the upper opening of the upper cylinder body 13, so that the covering effect is better.

[0030] Preferably, the middle part of the vibration plate 12 is provided with a vibration motor 41. The vibration motor 41 adopts a common structure in the prior art, and a set of adjustable eccentric blocks are arranged on both ends of the rotor shaft of the vibration motor. The vibration motor 41 obtains exciting force by using the centrifugal force generated by high-speed rotation of the shaft and the eccentric blocks, and the rotation of the eccentric blocks forms the power source for the vibration of the vibration plate 12. At the same time, the vibration plate 12 can vibrate at a certain frequency in cooperation with the spring structure 16.

[0031] The vibration plate 12 is vibrated by the vibration motor 41 and the spring structure 16, and the vibration plate 12 drives the upper cylinder 13 and the lower cylinder 14 to vibrate, so as to screen the powder material.

[0032] Preferably, the inclined cylinder 21 is provided with a rotating shaft 42, and the spiral conveying blade 22 is arranged on the rotating shaft 42.

[0033] The rotating shaft 42 is driven to rotate by a rotating motor, and the rotating shaft 42 drives the spiral conveying blade 22 to rotate. The spiral conveying blade 22 then conveys the powder material to the discharge pipe 24.

[0034] Preferably, the telescopic members 32 are two, and the telescopic members 32 are both telescopic cylinders 321. The ends of the telescopic cylinders 321 are arranged on the extension plates 322, respectively. The inner ends of the extension plates 322 are connected with the outer wall of the discharge pipe 24, and the telescopic rods of the telescopic cylinders 321 are connected with the upper ends of the cover 31, respectively.

[0035] The cover 31 is lowered to cover the upper end of the upper cylinder 13 by the extension of the telescopic rods of the telescopic cylinders 321. At this time, the cover 31 does not contact the upper cylinder 13, but only covers the upper cylinder 13. When the telescopic rods of the telescopic cylinders 321 are retracted, the cover 31 moves upward, so that the upper opening of the upper cylinder 13 is opened.

[0036] Preferably, the knocking assembly 50 is further included. The knocking assembly 50 is two sets, and the knocking assemblies 50 are arranged on both sides of the discharge pipe 24, respectively. The knocking assemblies 50 each include a driving motor, a vertical plate 51 and a knocking plate 52. Figure 4 As shown in the drawings, the vertical plate 51 is arranged above the extension plate 322 and is connected perpendicularly. Specifically, the vertical plate 51 can be installed on the extension plate 322 by welding. The vertical plate 51 is provided with a through hole. The driving motor is arranged on the vertical plate 51. The output shaft of the driving motor passes through the through hole of the vertical plate 51 and is connected with the lower end of the knocking plate 52. The upper end of the knocking plate 52 is provided with a knocking column 53.

[0037] The powder material is added into the upper cylinder 13 through the discharge pipe 24, the threaded hose 33 and the discharge channel 34, the driving motor is reversely rotated to drive the knocking plate 52 to rotate, the knocking column 53 at the outer end of the knocking plate 52 constantly impacts the outer wall of the discharge pipe 24, so that the powder material cannot be blocked in the discharge pipe 24, meanwhile, the waste of resources is avoided.

[0038] Preferably, a stirring member is arranged in the hopper 23, the stirring member comprises a stirring shaft and stirring rods, the stirring shaft is arranged in the hopper, and a plurality of stirring rods are arranged in the radial direction of the stirring shaft.

[0039] When the powder material is added into the hopper, in order to avoid the problem of existing lumps in the powder material, the stirring shaft 6 is driven to rotate by the motor structure, the stirring rods are driven to rotate by the stirring shaft, and the powder material in the hopper is constantly knocked and stirred, so that the lumps in the powder material are avoided, and the subsequent screening quality is affected.

[0040] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A powder sieving apparatus, characterized by, The powder screening device comprises a screening structure (10) having an upper cylinder (13), an upper feeding structure (20) provided on one side of the screening structure (10), the upper feeding structure (20) comprising an inclined cylinder (21), a spiral conveying blade (22) and a hopper (23), a support foot (25) being mounted on the inclined cylinder (21), the hopper (23) being provided on the upper end of the inclined cylinder (21), the spiral conveying blade (22) being rotatably provided in the inclined cylinder (21), a discharge pipe (24) being provided on the lower end of the inclined cylinder (21), a closure structure (30) comprising a cover (31), a telescopic member (32) and a threaded hose (33), the upper end of the threaded hose (33) being connected with the lower end of the discharge pipe (24), the lower end of the threaded hose (33) being connected with a discharge passage (34) on the upper end of the cover (31), the telescopic member (32) being connected with the discharge pipe (24), the movable end of the telescopic member (32) being connected with the cover (31) for driving the cover (31) to ascend or descend, the cover (31) being provided above the upper cylinder (13) and not being in contact with the upper cylinder (13).

2. The powder screening device according to claim 1, wherein the screening structure (10) further comprises an annular base (11), a vibrating plate (12), the upper cylinder (13), a lower cylinder (14) and a screen (15), a plurality of spring structures (16) being provided on the upper end of the annular base (11), the vibrating plate (12) being provided on the upper ends of the spring structures (16), the lower cylinder (14) being provided on the upper end of the vibrating plate (12), the upper cylinder (13) being provided on the upper end of the lower cylinder (14), the screen (15) being provided on the lower end of the upper cylinder (13), a first outlet (17) being provided on the upper cylinder (13), a second outlet (18) being provided on the lower cylinder (14). A vibrating motor (41) is provided on the middle portion of the vibrating plate (12). A rotating shaft (42) is provided in the inclined cylinder (21), and the spiral conveying blade (22) is provided on the rotating shaft (42). The telescopic member (32) has two telescopic cylinders (321), and the ends of the telescopic cylinders (321) are respectively provided on extension plates (322), the inner ends of the extension plates (322) are connected with the outer wall of the discharge pipe (24), and the telescopic rods of the telescopic cylinders (321) are respectively connected with the upper end of the cover (31). ​ ​ ​ ​ 3. The powder sieving apparatus of claim 1, wherein, ​ 4. The powder sieving apparatus of claim 1, wherein, ​ 5. The powder sieving apparatus of claim 1, wherein, Also include the knock assembly (50), the knock assembly (50) has two groups, two groups of the knock assembly (50) are arranged on the two sides of the discharge pipe (24) respectively, two groups of the knock assembly (50) all include drive motor, vertical plate (51) and knock plate (52), the vertical plate (51) is arranged on the extension plate (322), the drive motor is arranged on the vertical plate (51), the output shaft of the drive motor is connected with the lower end of the knock plate (52) through the vertical plate (51), the upper end of the knock plate (52) is provided with knock column (53).

6. The powder sieving apparatus of claim 1, wherein, The hopper (23) is provided with a stirring part, the stirring part includes a stirring shaft and stirring rods, the stirring shaft is arranged in the hopper (23), and a plurality of stirring rods are arranged in the radial direction of the stirring shaft.

7. The powder sieving apparatus of claim 1, wherein, The screening structure is a rotary vibrating screen.

Images