CN111822328A

CN111822328A - Screening device and method for producing screen cage type copper-based powder

Info

Publication number: CN111822328A
Application number: CN202010645182.3A
Authority: CN
Inventors: 晏超; 徐修明; 曹宝莲
Original assignee: Tongling Copper Based Powder Technology Co ltd
Current assignee: Tongling Copper Based Powder Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2020-10-27

Abstract

The invention provides a screening device for producing a screen cage type copper-based powder, which relates to the field of copper-based powder production and comprises a screening cylinder, wherein the top end of the screening cylinder is provided with a feed hopper, the bottom end of a feed cylinder positioned in the screening cylinder is connected with a feed pipe, the bottom end of the feed pipe is fixedly communicated with the feed cylinder, the side surface of the feed cylinder is connected with a discharge cylinder, the discharge cylinder is rotatably connected with a screen cage, the screen cage comprises a rotary cylinder rotatably connected with the discharge cylinder, the outer side of the rotary cylinder is fixedly connected with a wire mesh which is linearly arrayed by taking the axis of the rotary cylinder as the center, the other end of the wire mesh is connected with an end ring, the diameter of the end ring is larger than that of the rotary cylinder, the end ring is connected with the rotary cylinder through a shaft lever, and a plurality of concentric material collecting cylinders are arranged below the screen cage. And (5) precisely screening the powder.

Description

Screening device and method for producing screen cage type copper-based powder

Technical Field

The invention relates to the field of copper-based powder production, in particular to a screening device and a screening method for producing a screen cage type copper-based powder.

Background

The quality of the copper-based powder is determined by the granularity of the copper-based powder after production, and the quality with smaller granularity is higher, so that the copper-based powder needs to be screened and then sold differently after the same production is finished.

Patent No. CN208357202U discloses a drum-type particle classifying and screening device, which is used for classifying and screening particles in families or laboratories. The invention comprises a grading screening structure and an external protection box body, wherein the grading screening structure comprises a fixed framework and grading screening net layers, the fixed framework comprises a connecting rod and base plates at two ends, the grading screening net layers are sequentially inserted into base plate grooves connected to one end of the connecting rod from inside to outside according to the mesh number, materials to be screened are loaded into a middle screen from the other end, then the base plate at the other end is connected to the connecting rod at the other end, and the grading screen is inserted into the grooves of the base plates, so that the grading screening structure is formed. The protective box body comprises a box body shell and a box body cover, and the graded screening structure filled with screening materials is filled into the box body shell, so that the thin-wall cylindrical structure outside the gasket is stuffed into the groove on the inner side of the box body cover.

However, the copper-based powder needs to be sieved accurately in some cases, namely sieving in a smaller diameter range, and if the copper-based powder is sieved by adopting the prior art, multiple layers of screens are needed, so that the structure is complex and the sieving precision is low.

Disclosure of Invention

The invention aims to provide a screening device and a screening method for producing a screen cage type copper-based powder, which aim to solve the technical problem.

In order to solve the technical problems, the invention adopts the following technical scheme: a screening device for producing copper-based powder comprises a screening cylinder, wherein a feed hopper is arranged at the top end of the screening cylinder, a feed pipe is connected to the bottom end of the feed cylinder in the screening cylinder, the bottom end of the feed pipe is fixedly communicated with the feed cylinder, a discharge cylinder is connected to the side surface of the feed cylinder, the discharge cylinder is rotatably connected with a screening cage, the screening cage comprises a rotary cylinder rotatably connected with the discharge cylinder, a wire mesh which is linearly arrayed with the axis of the rotary cylinder as the center is fixedly connected to the outer side of the rotary cylinder, the other end of the wire mesh is connected with an end ring, the diameter of the end ring is larger than that of the rotary cylinder, the end ring is connected with the rotary cylinder through a shaft rod, a plurality of concentric material collecting cylinders are arranged below the screening cage, a material outlet channel is formed between two adjacent material collecting cylinders, a motor is arranged at the bottom end of the;

preferably, copper-based powder is screened according to the volume of the copper-based powder through mesh gaps which are continuously and gradually increased, the copper-based powder in a certain diameter range enters a corresponding material collecting cylinder through the gaps which are continuously and gradually changed, high-precision screening is realized through a simple screening structure, a plurality of meshes are in an annular array to form a circular rotatable screen cage, the copper-based powder is continuously stirred in the screening process, the phenomenon that a large amount of materials are distributed and accumulated in the same area to cause material blockage is avoided, the diameter of one end of the screen cage is large, the copper-based powder in the screen cage rolls towards the end far away from the material discharging cylinder in the stirring process, and the rest powder after screening is finished further moves to the next screening area.

Preferably, the mesh is located on a half-section plane of the screen cage.

Preferably, the wires are inclined with respect to the half-section plane of the screen cage.

Preferably, one end of the shaft rod is fixedly connected with the inner side of the rotary drum through a support rod, the other end of the shaft rod is rotatably connected with the shaft sleeve, and the outer side of the shaft sleeve is fixedly connected with the inner side of the end ring through a support rod.

Preferably, the mesh wire penetrates through a through hole in the side face of the end ring and is wound on a winding drum, the winding drum is concentrically and rotatably connected with the shaft sleeve, bolts are respectively connected to the end portion of the winding drum and the side face of the shaft sleeve, and both ends of the through hole are round-cornered edges;

the drum is connected with the end ring through a shaft rod, so that the distance between the drum and the end ring is fixed, the end ring is rotatably connected with the shaft rod, and the end ring and the shaft rod can rotate relatively to change the inclination angle of the screen wires relative to the axis of the screen cage, thereby changing the initial gap between the adjacent screen wires.

Preferably, the transmission mechanism comprises a first bevel gear on the outer side of the rotating drum, the first bevel gear is meshed with a second bevel gear, the second bevel gear is coaxially and fixedly connected with a transmission shaft fixedly connected with a motor, and the transmission shaft is coaxially and fixedly connected with a spiral conveying shaft in the feeding pipe.

Preferably, the bottom end of the discharge cylinder is in a circular truncated cone shape, the transmission shaft penetrates through the bottom surface of the discharge cylinder and is in rotary connection with the discharge cylinder, the side surface of the discharge cylinder is provided with the discharge cylinder in an annular array by taking the axis of the discharge pipe as the center, and one end of the discharge pipe, far away from the discharge cylinder, is inclined downwards;

the rotary drum is driven to rotate by connecting a first bevel gear through a transmission shaft, and meanwhile, a spiral conveying shaft is arranged on the transmission shaft and used for controlling the feeding speed.

Preferably, the discharge cylinder is provided with a vibration ring coaxial with the rotary cylinder, and the inner side of the vibration ring is provided with vibration balls which are in an annular array by taking the axis of the vibration ring as the center.

Preferably, the shape of the vibration sphere is a hemisphere, and the hemispherical section of the vibration sphere is coplanar with the diameter of the vibration ring;

the vibration ring is arranged on the outer side of the rotary drum, and the vibration ball fixed in the vibration ring presses the net wire and instantly releases the net wire, so that the net wire generates low-amplitude high-frequency vibration, and powder is prevented from being adhered to the net wire.

The invention has the beneficial effects that:

1. the two ends of the mesh wire are connected by the rotary drum and the end ring with the diameter larger than that of the rotary drum, after the mesh wire is tightened, the mesh wire gap is continuously increased from one end of the rotary drum to one end of the end ring, the screen cage is communicated with the discharge cylinder, powder can enter the screen from the end with the smaller gap and enter the end with the larger mesh wire gap by rolling and stirring, the powder is accurately screened, and a plurality of concentric material collecting cylinders are arranged below the screen cage, so that the powder in different diameter ranges falls into corresponding discharge channels;

2. the end ring and the shaft rod are in rotary connection, so that the end ring can drive one end of the mesh wire to rotate relative to the rotary drum, the initial gap of the mesh wire is changed, copper-based powder with smaller diameter is screened out according to different requirements, the winding drum is rotatably connected to the side surface of the shaft sleeve, and the mesh wire is wound by the winding drum, so that the length of the mesh wire is changed to adapt to the change of the relative distance of mesh wire connection points when the mesh wire rotates relative to the rotary drum along with the end ring;

3. the rotation of the screen cage is realized by the bevel gear combination connection and the rotary drum in the transmission mechanism, and simultaneously, the transmission shaft is connected with the spiral conveying shaft in the feeding pipe to control the feeding speed;

4. set up the vibration and make the net silk constantly vibrate at the rotation in-process, avoid the powder adhesion to cause the putty, can also shake the powder of tubercle simultaneously and smash.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the sieving cartridge of the present invention;

FIG. 3 is a cross-sectional view of a sizing cylinder of the present invention;

FIG. 4 is a connection diagram of a feed cylinder and a screen cage of the present invention;

FIG. 5 is a cross-sectional view of a feed cylinder and screen cage of example 2 of the present invention;

FIG. 6 is a cross-sectional view of a feed cylinder and screen cage of example 3 of the present invention;

FIG. 7 is a partial structural schematic view of an end ring of the present invention;

FIG. 8 is a view of the vibrating ring and feed cylinder of the present invention in combination;

FIG. 9 is a schematic view of the vibrating ring of the present invention;

reference numerals: 1. a screening drum; 101. a material collecting barrel; 102. a discharging channel; 2. a feed hopper; 201. a feed pipe; 202. a discharge cylinder; 2021. a discharge pipe; 3. a support leg; 4. a discharge pipe; 5. a motor; 6. a drive shaft; 7. a spiral delivery shaft; 8. a screen cage; 801. an end ring; 8011. a through hole; 802. a rotating drum; 803. mesh; 804. a shaft lever; 805. a strut; 806. a shaft sleeve; 807. winding the reel; 9. a transmission mechanism; 901. a second bevel gear; 902. a first bevel gear; 10. a bolt; 11. a vibrating ring; 1101. vibrating the ball; 1102. a connecting rod.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Example 1

As shown in figures 1-4, a screening device for producing copper-based powder comprises a screening cylinder 1, a feed hopper 2 is arranged at the top end of the screening cylinder 1, a feed pipe 201 is connected to the bottom end of the feed cylinder positioned in the screening cylinder 1, the bottom end of the feed pipe 201 is fixedly communicated with the feed cylinder, a discharge cylinder 202 is connected to the side surface of the feed cylinder, the discharge cylinder 202 is rotatably connected with a screening cage 8, the screening cage 8 comprises a rotary cylinder 802 rotatably connected with the discharge cylinder 202, a wire mesh 803 which is linearly arrayed with the axis of the rotary cylinder 802 as the center is fixedly connected to the outer side of the rotary cylinder 802, the other end of the wire mesh 803 is connected with an end ring, the diameter of the end ring 801 is larger than that of the rotary drum 802, the end ring 801 is connected with the rotary drum 802 through a shaft rod 804, a plurality of concentric material collecting barrels 101 are arranged below the screen cage 8, a material outlet channel 102 is formed between every two adjacent material collecting barrels 101, a motor 5 is arranged at the bottom end of the screening barrel 1, and the motor 5 is in transmission connection with the screen cage 8 through a transmission mechanism 9. .

Copper-based powder is added into a feeding pipe 201 from a feeding hopper 2, the feeding pipe 201 is communicated with a feeding cylinder, so that the powder can enter the feeding cylinder, the side surface of the feeding cylinder is provided with a discharging cylinder 202 communicated with the feeding cylinder, so that the powder can enter a screen cage 8 which is positioned on the circumferential side surface of the feeding cylinder and is in annular array from the discharging cylinder 202, the discharging cylinder 202 is rotatably connected with a rotating cylinder 802 at one end of the screen cage 8, the connection mode adopts the existing mode of coaxial rotating connection of pipes, simultaneously, the axial lines and the inner diameters of the rotating cylinder 802 and the discharging cylinder 202 are the same, the screen cage 8 is in transmission connection with a motor 5 through a rotating mechanism, the rotating cylinder 802 can be rotated under the driving of the motor 5 so as to rotate the screen cage 8, the diameter of end rings 801 at two ends of the screen cage 8 is larger than that the diameter of the rotating cylinder 802, the mesh 803 is gradually inclined outwards from the rotating shaft to, the powder entering the screen cage 8 slides downwards along the mesh 803 in the turning process along with the screen cage 8, so that the powder with different particle diameters is gradually screened through the gap of the mesh 803 with gradually changed connecting lines, particles with different diameters fall down from corresponding circumferential positions in the screening cylinder 1 and enter the discharge channel 102 enclosed by the two feeding cylinders, accurate screening is realized, the screen cage 8 continuously rotates, the powder which cannot fall down can overturn along with the screen cage 8, and the powder is prevented from being clamped in the gap of the mesh 803 by the pressure of the upper powder.

Example 2

As shown in FIGS. 1-5; as shown in FIG. 7, a screening device for producing copper-based powder comprises a screening cylinder 1, a feed hopper 2 is arranged at the top end of the screening cylinder 1, a feed pipe 201 is connected to the bottom end of the feed cylinder positioned in the screening cylinder 1, the bottom end of the feed pipe 201 is fixedly communicated with the feed cylinder, a discharge cylinder 202 is connected to the side surface of the feed cylinder, the discharge cylinder 202 is rotatably connected with a screening cage 8, the screening cage 8 comprises a rotary cylinder 802 rotatably connected with the discharge cylinder 202, a linear array of mesh wires 803 taking the axis of the rotary cylinder 802 as the center is fixedly connected to the outer side of the rotary cylinder 802, the other end of the mesh wires 803 is connected with an end ring 801, the diameter of the end ring 801 is larger than that of the rotary cylinder 802, the end ring 801 is connected with the rotary cylinder 802 through a shaft lever 804, a plurality of concentric material collecting cylinders 101 are arranged below the screening cage 8, a material outlet channel 102 is formed between two adjacent material collecting cylinders 101, a motor, the mesh wire 803 is located on a half-section plane of the screen cage 8, one end of the shaft rod 804 is fixedly connected with the inner side of the rotary drum 802 through a supporting rod 805, the other end of the shaft rod 804 is rotatably connected with a shaft sleeve 806, the outer side of the shaft sleeve 806 is fixedly connected with the inner side of the end ring 801 through the supporting rod 805, the mesh wire 803 penetrates through a through hole 8011 in the side surface of the end ring 801 to be wound on the winding drum 807, the winding drum 807 is concentrically and rotatably connected with the shaft sleeve 806, bolts 10 are respectively connected to the end part of the winding drum 807 and the side surface of the. .

When the plane of the mesh wire 803 is located on the half-section plane of the screen cage 8, that is, when the mesh wire 803 is coplanar with the axis of the shaft 804 in the screen cage 8, the initial gap of the mesh wire 803 is the maximum value, at this time, the screening precision is the lowest value, when the screening is started, all the powder particles with the diameter smaller than the gap of the mesh wire 803 fall down through the gap of the mesh wire 803, the rotary drum 802 is fixedly connected with the shaft 804 through the supporting rod 805, the end ring 801 is rotatably connected with the shaft 804 through the supporting rod 805 and the shaft sleeve 806, and the shaft sleeve 806 is provided with the bolt 10, so that the shaft sleeve 806 is fixed with the shaft 804, the whole screen cage 8 can rotate along with the rotation of the rotary drum 802, and the positions of both ends.

Example 3

As shown in fig. 1-4; 6-7, a screening device for producing copper-based powder comprises a screening cylinder 1, a feed hopper 2 is arranged at the top end of the screening cylinder 1, a feed pipe 201 is connected to the bottom end of the feed cylinder positioned in the screening cylinder 1, the bottom end of the feed pipe 201 is fixedly communicated with the feed cylinder, a discharge cylinder 202 is connected to the side surface of the feed cylinder, the discharge cylinder 202 is rotatably connected with a screening cage 8, the screening cage 8 comprises a rotary cylinder 802 rotatably connected with the discharge cylinder 202, a linear array of mesh wires 803 taking the axis of the rotary cylinder 802 as the center is fixedly connected to the outer side of the rotary cylinder 802, the other end of the mesh wires 803 is connected with an end ring 801, the diameter of the end ring 801 is larger than that of the rotary cylinder 802, the end ring 801 is connected with the rotary cylinder 802 through a shaft lever 804, a plurality of concentric material collecting cylinders 101 are arranged below the screening cage 8, a material outlet channel 102 is formed between two adjacent material collecting cylinders 101, a motor 5 is arranged at, the mesh wire 803 is inclined relative to the half-section plane of the screen cage 8, one end of the shaft rod 804 is fixedly connected with the inner side of the rotary drum 802 through a supporting rod 805, the other end of the shaft rod 804 is rotatably connected with a shaft sleeve 806, the outer side of the shaft sleeve 806 is fixedly connected with the inner side of the end ring 801 through a supporting rod 805, the mesh wire 803 penetrates through a through hole 8011 in the side surface of the end ring 801 to be wound on the winding drum 807, the winding drum 807 and the shaft sleeve 806 are concentrically and rotatably connected, bolts 10 are respectively connected to the end part of the winding drum 807 and the side surface of.

When the end ring 801 is rotated to rotate the end ring 801 relative to the drum 802, one end of the mesh wire 803 connected to the end ring 801 rotates with the end ring 801 relative to the other end of the mesh wire 803, at which time the gap at the middle position of the mesh wire 803 gradually decreases, so that the drum 802 extends to the middle of the mesh wire 803, as shown in fig. 6, when the mesh wire 803 rotates so that the middle of the mesh wire 803 is tightened, the powder falls from the minimum gap of the mesh wire 803 into the screen cage 8 to start screening, when the middle of the mesh wire 803 is tightened to the limit position, the discharge port of the drum 802 is flush with the minimum gap of the mesh wire 803, since the length of the mesh wire 803 between the drum 802 and the end ring 801 changes during the rotation of the end ring 801, so that the winding drum 807 is provided to wind the mesh wire 803, the mesh wire 803 between the drum 802 and the end ring 801 can adapt to the change, after the end ring 801 rotates and is fixed by the bolt 10, the winding drum 807 tightens, the net wire 803 between the end ring 801 and the rotary drum 802 is tightened, then the winding drum 807 is fixed with the shaft sleeve 806 through the bolt 10, the bolt 10 penetrates through the side surface of the winding drum 807 to be abutted against the shaft sleeve 806, the winding drum 807 is fixed with the shaft sleeve 806 through friction force, the end part of the shaft rod 804 is provided with a groove which is connected with the winding drum 807 and the shaft sleeve 806 to axially fix the winding drum 807 and the shaft rod 804, the net wire 803 passes through a through hole 8011 in the side surface of the end ring 801 to enable the net wire 803 to radially rotate along with the end ring 801, and the end part of the through hole 8011 is a round edge to enable the net wire 803 to form an arc bending section when the net wire 803 is rotated and bent.

Example 4

As shown in fig. 1-7: a screening device for producing copper-based powder comprises a screening cylinder 1, wherein a feed hopper 2 is arranged at the top end of the screening cylinder 1, a feed pipe 201 is connected to the bottom end of the feed cylinder positioned in the screening cylinder 1, the bottom end of the feed pipe 201 is fixedly communicated with the feed cylinder, a discharge cylinder 202 is connected to the side surface of the feed cylinder, the discharge cylinder 202 is rotatably connected with a screening cage 8, the screening cage 8 comprises a rotary cylinder 802 rotatably connected with the discharge cylinder 202, a linear array of mesh wires 803 taking the axis of the rotary cylinder 802 as the center is fixedly connected to the outer side of the rotary cylinder 802, the other end of the mesh wires 803 is connected with an end ring 801, the diameter of the end ring 801 is larger than that of the rotary cylinder 802, the end ring 801 is connected with the rotary cylinder 802 through a shaft lever 804, a plurality of concentric material collecting cylinders 101 are arranged below the screening cage 8, a material outlet channel 102 is formed between two adjacent material collecting cylinders 101, a motor 5 is, the transmission mechanism 9 comprises a first bevel gear 902 on the outer side of the rotating drum 802, the first bevel gear 902 is meshed with a second bevel gear 901, the second bevel gear 901 is coaxially and fixedly connected with a transmission shaft 6 fixedly connected with the motor 5, the transmission shaft 6 is coaxially and fixedly connected with a spiral conveying shaft 7 in the feeding pipe 201, the bottom end of the discharge cylinder 202 is in a circular truncated cone shape, the transmission shaft 6 penetrates through the bottom surface of the discharge cylinder 202 and is rotatably connected with the discharge cylinder 202, the side surface of the discharge cylinder 202 is provided with the discharge cylinder 202 which is in an annular array by taking the axis of the discharge pipe 2021 as the center, and one end of the discharge pipe 202.

The motor 5 is connected with a transmission shaft 6 penetrating the bottom end of the screening cylinder 1, the transmission shaft 6 is fixedly connected with a spiral conveying shaft 7 in the feeding pipe 201, and a second bevel gear 901 is fixedly connected on the transmission shaft 6, the second bevel gear 901 is meshed with a first bevel gear 902, the first bevel gear 902 is coaxially and fixedly connected with the sieve cage 8, thereby controlling the ratio of the feeding speed to the screening speed, avoiding the situation that the powder material in the screening cage 8 is accumulated to cause that the powder material with smaller particle diameter can not fall to cause incomplete screening of the powder material, meanwhile, the sieve cage 8 can be driven to rotate, so that the powder in the sieve cage 8 is turned over, the bottom end of the discharge cylinder 202 is in a circular truncated cone shape, so that the powder can slide down along the circular truncated cone and enter the discharge pipe 2021, the plurality of discharge pipes 2021 are annularly arrayed, so that powder entering the feeding cylinder can enter each discharge pipe 2021 respectively, and the problem that excessive powder entering one discharge pipe 2021 cannot be screened in time is avoided.

Example 5

As shown in fig. 1-9: a screening device for producing copper-based powder comprises a screening cylinder 1, wherein a feed hopper 2 is arranged at the top end of the screening cylinder 1, a feed pipe 201 is connected to the bottom end of the feed cylinder positioned in the screening cylinder 1, the bottom end of the feed pipe 201 is fixedly communicated with the feed cylinder, a discharge cylinder 202 is connected to the side surface of the feed cylinder, the discharge cylinder 202 is rotatably connected with a screening cage 8, the screening cage 8 comprises a rotary cylinder 802 rotatably connected with the discharge cylinder 202, a linear array of mesh wires 803 taking the axis of the rotary cylinder 802 as the center is fixedly connected to the outer side of the rotary cylinder 802, the other end of the mesh wires 803 is connected with an end ring 801, the diameter of the end ring 801 is larger than that of the rotary cylinder 802, the end ring 801 is connected with the rotary cylinder 802 through a shaft lever 804, a plurality of concentric material collecting cylinders 101 are arranged below the screening cage 8, a material outlet channel 102 is formed between two adjacent material collecting cylinders 101, a motor 5 is, the discharging cylinder 202 is provided with a vibration ring 11 which is coaxial with the rotating cylinder 802, the inner side of the vibration ring 11 is provided with vibration balls 1101 which are annularly arrayed with the axis of the vibration ring 11 as the center, the shape of the vibration balls 1101 is hemispherical, and the hemispherical section of the vibration balls 1101 is coplanar with the diameter of the vibration ring 11.

The vibration ring 11 is fixedly connected to the outer side of the feeding cylinder through a connecting rod 1102, when the screen cage 8 rotates, the vibration ball 1101 fixedly connected to the inner side of the vibration ring 11 presses the mesh 803, so that the mesh 803 is slightly deformed, the vibration ball 1101 is hemispherical, and when the mesh 803 sweeps over the end portion of the vibration ball 1101, potential energy generated by pressing of the mesh 803 is released, so that the mesh 803 generates high-frequency low-amplitude vibration, and powder is prevented from being adhered to the mesh 803 to cause the mesh 803 to be blocked.

The working principle is as follows: according to the invention, when copper-based powder is screened, the powder entering the screen cage 8 is turned over along with the rotation of the screen cage 8, and the diameter of the end ring 801 is larger than that of the rotary drum 802, so that in the rotation process of the screen cage 8, the powder can roll or slide downwards along the mesh 803, so that the powder with different particles is continuously screened from small to large, the screening precision is improved, the blocking is avoided, the angle between the phase of the mesh 803 and the axis of the screen cage 8 is adjustable, the initial gap of the mesh 803 can be adjusted according to the screening precision, the powder with the finest particle size is screened, the screened powder is discharged through the discharge pipe 4 communicated with each discharge passage 102, the copper-based powder screening device is suitable for screening products with higher particle size requirements, multiple layers of filter screens are not needed, and the screening procedure is simple.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a screening plant is used in production of sieve cage formula copper base powder, includes screening section of thick bamboo (1), its characterized in that: the screening cylinder is characterized in that a feed hopper (2) is arranged at the top end of the screening cylinder (1), the bottom end of a feed cylinder in the screening cylinder (1) is connected with a feed pipe (201), the bottom end of the feed pipe (201) is fixedly communicated with the feed cylinder, the side surface of the feed cylinder is connected with a discharge cylinder (202), the discharge cylinder (202) is rotatably connected with a screen cage (8), the screen cage (8) comprises a rotary cylinder (802) rotatably connected with the discharge cylinder (202), a wire mesh (803) which is linearly arrayed by taking the axis of the rotary cylinder (802) as the center is fixedly connected to the outer side of the rotary cylinder (802), the other end of the wire mesh (803) is connected with an end ring (801), the diameter of the end ring (801) is larger than that of the rotary cylinder (802), the end ring (801) is connected with the rotary cylinder (802) through a shaft rod (804), a plurality of concentric material collecting cylinders (101) are arranged below the screen cage (8), and a, the screening device is characterized in that a motor (5) is arranged at the bottom end of the screening cylinder (1), and the motor (5) is in transmission connection with a screening cage (8) through a transmission mechanism (9).

2. The screening device for producing the copper-based powder body in the screening cage type according to claim 1, which is characterized in that: the mesh wire (803) is located on the half-section plane of the screen cage (8).

3. The screening device for producing the copper-based powder body in the screening cage type according to claim 1, which is characterized in that: the wires (803) are inclined relative to the half-section plane of the screen cage (8).

4. The screening device for producing the copper-based powder body in the screening cage type according to claim 2 or 3, wherein: one end of the shaft rod (804) is fixedly connected with the inner side of the rotary drum (802) through a supporting rod (805), the other end of the shaft rod (804) is rotatably connected with a shaft sleeve (806), and the outer side of the shaft sleeve (806) is fixedly connected with the inner side of the end ring (801) through the supporting rod (805).

5. The screening device for producing the copper-based powder body in the screening cage type according to claim 4, is characterized in that: the net wire (803) penetrates through a through hole (8011) in the side face of the end ring (801) and is wound on a winding drum (807), the winding drum (807) is concentrically and rotatably connected with a shaft sleeve (806), bolts (10) are respectively connected to the end portion of the winding drum (807) and the side face of the shaft sleeve (806), and both ends of the through hole (8011) are round-cornered edges.

6. The screening device for producing the copper-based powder body in the screening cage type according to claim 1, which is characterized in that: the transmission mechanism (9) comprises a first bevel gear (902) on the outer side of the rotary drum (802), the first bevel gear (902) is meshed with a second bevel gear (901), the second bevel gear (901) is coaxially and fixedly connected with a transmission shaft (6) fixedly connected with the motor (5), and the transmission shaft (6) is coaxially and fixedly connected with a spiral material conveying shaft (7) in the feeding pipe (201).

7. The screening device for producing the copper-based powder body in the screening cage type according to claim 6, is characterized in that: the bottom end of the discharge cylinder (202) is in a circular truncated cone shape, the transmission shaft (6) penetrates through the bottom surface of the discharge cylinder (202) and is rotatably connected with the discharge cylinder (202), the side surface of the discharge cylinder (202) is provided with the discharge cylinder (202) which is in an annular array by taking the axis of the discharge pipe (2021) as the center, and one end, away from the discharge cylinder (202), of the discharge pipe (2021) inclines downwards.

8. The screening device for producing the copper-based powder body in the screening cage type according to claim 1, which is characterized in that: the discharging cylinder (202) is provided with a vibration ring (11) coaxial with the rotating cylinder (802), and vibration balls (1101) in an annular array with the axis of the vibration ring (11) as the center are arranged on the inner side of the vibration ring (11).

9. The screening device for producing the copper-based powder body in the screening cage type according to claim 1, which is characterized in that: the shape of the vibration ball (1101) is hemispherical, and the hemispherical section of the vibration ball (1101) is coplanar with the diameter of the vibration ring (11).

10. The screening method for producing the copper-based powder of the sieve cage type according to any one of claims 1 to 9, characterized in that: copper-based powder is screened according to the volume of the copper-based powder through gaps of the continuous and gradually increased mesh wires (803), the plurality of mesh wires (803) are annularly arrayed to form a circular rotatable screen cage (8), so that the copper-based powder is continuously turned over in the screening process, and the diameter of one end of the screen cage (8) is larger, so that the copper-based powder in the screen cage (8) rolls towards one end far away from the discharge cylinder (202) in the turning process.