CN111017564B - A pneumatic powder feeding and uniform material distribution device and its processing method - Google Patents
A pneumatic powder feeding and uniform material distribution device and its processing method Download PDFInfo
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- CN111017564B CN111017564B CN201911384516.XA CN201911384516A CN111017564B CN 111017564 B CN111017564 B CN 111017564B CN 201911384516 A CN201911384516 A CN 201911384516A CN 111017564 B CN111017564 B CN 111017564B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/42—Nozzles
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- Mechanical Engineering (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention relates to a pneumatic powder feeding and distributing device, provides a pneumatic powder feeding uniform distributing device and a processing method thereof, and solves the problem of nonuniform distribution of the existing powder distributing device. The device comprises a powder divider body, wherein a circular powder inlet is formed in the center of one end face of the powder divider body, N powder outlets which are uniformly distributed along the same circumference are formed in the other end face of the powder divider body, N is a positive integer greater than or equal to 2, the N powder outlets are in the shape of sectors with the same cross section, the circular size of the N sectors after being spliced is the same as that of the circular powder inlet, the sector angle of each sector is 360 degrees/N, and the N powder outlets are communicated with the powder inlet through N sector channels with the same shape. The device adopts the principle of equally dividing the area of the powder inlet into N equal areas uniformly so as to achieve the purpose of evenly dividing the powder into materials.
Description
Technical Field
The invention relates to a pneumatic powder feeding and distributing device, in particular to a pneumatic powder feeding and distributing device and a processing method thereof.
Background
In the laser additive processing process, a pneumatic powder feeding device is generally used for feeding additive powder, and the additive powder is processed by adopting laser to be clad on the surface of a substrate, so as to form the additive. In the process of material addition, the uniformity of powder feeding plays a key role in order to improve the surface quality after material addition and the quality of a combined layer of a base material and powder.
The coaxial annular laser cladding head is generally used for cladding material-increasing processing, powder is firstly fed by a pneumatic powder feeder, then is divided into a plurality of parts by a pneumatic powder feeding and distributing device, the powder of the parts is converged by the annular cladding head to form powder spots coaxial with light spots, and then is clad on a base material after laser processing to form the material-increasing processing. However, the powder feeding and distributing device adopts a positive-displacement powder distributor, one end face of the positive-displacement powder distributor is provided with a powder inlet, the other end face of the positive-displacement powder distributor is provided with a plurality of powder outlets, and additive powder in a cavity of the powder distributor is fed out from the powder outlets through air, and the positive-displacement powder distributor reduces the air pressure, so that the powder is not stressed, particularly the influence of gravity, and the suspension state is changed to form an uneven weather suspension state, thereby affecting the uniformity of powder distribution and further affecting the quality of processing additive materials.
Disclosure of Invention
The invention provides a pneumatic powder feeding uniform distributing device and a processing method thereof, aiming at solving the technical problem of nonuniform distributing existing in the existing powder distributing device.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
The pneumatic powder feeding uniform distribution device is characterized by comprising a powder distributor body, wherein a circular powder inlet is arranged in the center of one end face of the powder distributor body, N powder outlets uniformly distributed along the same circumference are arranged on the other end face of the powder distributor body, N is a positive integer greater than or equal to 2, the N powder outlets are sectors with the same cross-sectional shape and the same size, the circular size of the N sectors after being spliced is the same as the cross-sectional shape of the circular powder inlet, the sector angle of each sector is 360 degrees/N, and the N powder outlets are communicated with the powder inlet through N sector channels with the same shape.
The powder distributor comprises a powder distributor body, and is characterized by further comprising an upper cover arranged on one end face of the powder distributor body and a lower cover arranged on the other end face of the powder distributor body, wherein the upper cover and the lower cover are in sealing connection with the powder distributor body, the upper cover is provided with a powder inlet through hole and an air inlet movable joint, the air inlet movable joint is arranged at the powder inlet through hole, one end of the air inlet movable joint is communicated with a round powder inlet, the lower cover is provided with N powder outlet through holes and N air movable joints which are uniformly distributed on the circumference, the N powder outlet through holes correspond to the N powder outlet positions, the N air movable joints are respectively arranged at the N powder outlet through holes, and one end of the air movable joint is communicated with the powder outlet.
Further, the n=2, 3, 4, 5, 6.
Further, an upper sealing ring is arranged between the powder divider body and the upper cover;
A lower sealing ring is arranged between the powder distributor body and the lower cover.
Further, the powder divider body is a cylinder.
Further, the powder divider body is formed by one-time linear cutting.
Meanwhile, the invention provides a processing method of the pneumatic powder feeding and uniform distributing device, which is characterized by comprising the following steps of:
1) Processing a powder divider body;
2) On the online cutting equipment, a pattern to be processed is designed by taking the center of one end face of the powder divider body as the center of a circle, and the pattern is in a sector shape equally divided by the same circle N;
3) The linear cutting machining mode is adopted, N fan-shaped channels penetrating through two end faces of the powder divider body are respectively machined in N times, an included angle exists between the center line of each fan-shaped channel and the center axis of the powder divider body, one end of each fan-shaped channel is located at a fan-shaped position of N equal parts of one end of the powder divider body, and the other end of each fan-shaped channel is evenly distributed on the same circumference of the other end face of the powder divider body.
Compared with the prior art, the invention has the advantages that:
The material dividing device is characterized in that a circular powder inlet and a plurality of powder outlets are respectively arranged on two end faces of a powder divider body, a fan-shaped channel between each powder outlet and the circular powder inlet is used as a powder feeding channel for additive powder, a physical area sharing principle is adopted to uniformly divide the area of a powder inlet (the circular powder inlet) into N equal areas (fan-shaped powder outlets), N equal-area divided material channels are arranged, the powder material can be uniformly divided into N equal-area parts, and the additive powder is fed through the N fan-shaped channels, so that the purpose of uniform material dividing is achieved.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of a pneumatic powder feeding and uniform distributing device of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is an exploded view of a first embodiment of the pneumatic powder feeding uniform distribution device of the present invention;
FIG. 5 is a schematic perspective view of a powder separator body in an embodiment of a pneumatic powder feeding uniform distribution device according to the present invention;
FIG. 6 is a schematic diagram of the structure of the powder separator body in the first embodiment of the pneumatic powder feeding uniform distribution device of the present invention;
FIG. 7 is a schematic diagram II of the structure of the powder separator body in the first embodiment of the pneumatic powder feeding and uniform distributing device of the present invention;
FIG. 8 is a third schematic structural view of the powder separator body in the first embodiment of the pneumatic powder feeding uniform distribution device of the present invention;
FIG. 9 is a schematic diagram showing the cooperation of 3 powder outlets and powder inlets in the first embodiment of the pneumatic powder feeding uniform distribution device;
FIG. 10 is a schematic structural view of a powder divider body (end face with powder outlet) in a second embodiment of a pneumatic powder feeding uniform distribution device according to the present invention;
FIG. 11 is a schematic structural view of a powder divider body (with a powder outlet end face) in a third embodiment of a pneumatic powder feeding uniform distribution device according to the present invention;
wherein, the reference numerals are as follows:
1-pneumatic connector, 2-lower cover, 21-powder outlet through hole, 3-lower sealing ring, 4-powder distributor body, 41-round powder inlet, 42-powder outlet, 43-fan-shaped channel, 5-upper sealing ring, 6-upper cover, 61-powder inlet through hole, 7-screw and 8-air inlet pneumatic connector.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 9, a pneumatic powder feeding and uniform distributing device comprises a powder distributor body 4, wherein the powder distributor body 4 is a cylinder, the powder distributor body is a device for directly and uniformly distributing powder from a powder feeding pipe, a circular powder inlet 41 is arranged in the center of one end surface of the powder distributor body 4, 3 powder outlets 42,3 uniformly distributed along the same circumference are formed in the other end surface of the powder distributor body, the powder outlets 42 are in the same sector shape and the same size, the circular size of the 3 sectors after being spliced is the same as the cross section of the circular powder inlet 41, the sector angle of each sector is 120 degrees, the 3 powder outlets 42 are respectively communicated with the powder inlet through 3 sector channels 43 with the same shape, the sum of the cross section areas of the 3 powder inlets is equal to the cross section area of the powder inlet, the 3 sector channels form a circle overlapped with the circular powder inlet 41, the 3 sector channels are uniformly distributed into 3 equal areas by adopting the physical area principle, and the 3 sectors can uniformly divide the powder inlet into 3 equal areas, and the 3 equal areas, so that the uniform distribution of the powder can be uniformly distributed into 3 equal areas.
The material distributing device of the embodiment further comprises an upper cover 6 arranged on one end face of the powder distributor body 4 and a lower cover 2 arranged on the other end face of the powder distributor body 4, wherein the upper cover 6 and the lower cover 2 are in sealing connection with the powder distributor body 4; specifically, the upper cover 6 is provided with 3 through holes uniformly distributed along the same circumference, one end surface of the powder divider body 4 is provided with 3 threaded holes matched with the through holes along the circumferential direction, an upper sealing ring 5 is arranged between the powder divider body 4 and the upper cover 6, the upper cover 6 is fixed on one end surface of the powder divider body 4 through the through holes of the upper cover 6 and the threaded holes of one end surface of the powder divider body 4 in sequence by screws 7, the upper cover 6 is provided with a powder inlet through hole 61 and an air inlet connector 8, the air inlet connector 8 is arranged at the position of the powder inlet through hole 61, one end of the air inlet connector 8 is communicated with a circular powder inlet 41, the lower cover 2 is provided with 3 threaded holes uniformly distributed along the circumferential direction, the other end surface of the powder divider body 4 is provided with 3 threaded holes matched with the through holes along the circumferential direction, a lower sealing ring 3 is arranged between the powder divider body 4 and the lower cover 2, the lower cover 2 is sequentially penetrated through the through holes of the lower cover 2 and the threaded holes of the other end surface of the powder divider body 4 by screws 7, the lower cover 2 is fixed on the other end surface of the powder divider body 4, the air inlet connector 8 is arranged at the position of the lower cover 2, one end surface of the powder outlet 21 is communicated with the air outlet 21, one end surface of the air outlet 21 is corresponding to the air outlet 21 and the outlet 21 is provided with the outlet 42, the outlet area of the outlet 21 is corresponding to the outlet 21, the outlet area of the outlet 21 is equal to the outlet area of the outlet 21, and is equal to the outlet area of the outlet 21 is 42.
In the material distributing device of the embodiment, the powder distributor body 4 is formed by linear cutting and one-time processing, and sealing rings are arranged between the powder distributor body 4 and the upper cover 6 and between the powder distributor body 4 and the lower cover 2 for sealing powder feeding gas.
Meanwhile, the embodiment provides a processing method of the pneumatic powder feeding and uniform distributing device, which comprises the following steps:
1) Processing a powder divider body 4;
2) On the online cutting equipment, a pattern to be processed is designed by taking the center of one end face of the powder divider body 4 as a circle center, and the pattern is in a sector shape equally divided by the same circle 3;
3) The linear cutting machining mode is adopted, the fan-shaped channels 43 of the two end faces of the 3 through powder divider body 4 are machined respectively for 3 times, an included angle exists between the center line of the fan-shaped channels 43 and the center axis of the machined powder divider body 4, one end of each of the 3 fan-shaped channels 43 is arranged at a fan-shaped position of 3 equal parts of one end of the powder divider body 4, the circular size of one end of each of the 3 fan-shaped channels after being spliced is identical with the cross-sectional shape of the circular powder inlet 41, and the other ends of the 3 fan-shaped channels 43 are uniformly distributed on the same circumference of the other end face of the powder divider body 4.
Example two
The difference with the embodiment is that 5 powder outlets 42 uniformly distributed along the same circumference are arranged on the other end surface of the powder distributor body 4 in the pneumatic powder feeding uniform distributing device, and the fan-shaped angle of the powder outlets 42 is 72 degrees, as shown in fig. 10.
In the processing method of the pneumatic powder feeding uniform material distributing device, in the step 3), 5 fan-shaped channels 43 penetrating through two end surfaces of the powder distributing device body 4 are respectively processed for 5 times by using a linear cutting processing mode.
Example III
The difference with the embodiment is that 6 powder outlets 42 uniformly distributed along the same circumference are arranged on the other end surface of the powder distributor body 4 in the pneumatic powder feeding uniform distributing device, and the fan-shaped angle of the powder outlets 42 is 60 degrees, as shown in fig. 11.
In the processing method of the pneumatic powder feeding uniform material distributing device, in the step 3), 6 fan-shaped channels 43 penetrating through two end surfaces of the powder distributing device body 4 are respectively processed for 6 times by using a linear cutting processing mode.
The foregoing description of the preferred embodiments of the present invention is merely illustrative, and the technical solution of the present invention is not limited thereto, and any known modifications may be made by those skilled in the art based on the main technical concept of the present invention, which falls within the technical scope of the present invention.
Claims (7)
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| CN201911384516.XA CN111017564B (en) | 2019-12-28 | 2019-12-28 | A pneumatic powder feeding and uniform material distribution device and its processing method |
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| CN201911384516.XA CN111017564B (en) | 2019-12-28 | 2019-12-28 | A pneumatic powder feeding and uniform material distribution device and its processing method |
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| CN111017564A CN111017564A (en) | 2020-04-17 |
| CN111017564B true CN111017564B (en) | 2025-02-14 |
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| CN111733415B (en) * | 2020-07-07 | 2022-06-10 | 宁波中物力拓超微材料有限公司 | Powder distributor, processing method thereof and laser cladding device |
| CN115976510B (en) * | 2022-12-28 | 2025-01-28 | 广东电网有限责任公司江门供电局 | A pneumatic powder feeding and mixing integrated powder separation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211733133U (en) * | 2019-12-28 | 2020-10-23 | 西安必盛激光科技有限公司 | A pneumatic powder feeding device for uniform distribution |
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| DE10035622C2 (en) * | 2000-07-21 | 2003-05-08 | Precitec Kg | Powder coating head |
| CN101342640B (en) * | 2007-07-11 | 2010-10-27 | 中国科学院沈阳自动化研究所 | Coaxial powder feeding system for preparation of functionally graded materials by laser rapid prototyping |
| CN201144283Y (en) * | 2007-12-25 | 2008-11-05 | 天津三星电子有限公司 | Powder splitter for pneumatic coaxial powder feeding |
| CN203999818U (en) * | 2014-07-31 | 2014-12-10 | 苏州大学 | A kind of laser wide-band cladding inner-light powder-supplying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211733133U (en) * | 2019-12-28 | 2020-10-23 | 西安必盛激光科技有限公司 | A pneumatic powder feeding device for uniform distribution |
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