Search

CN-122007430-A - Water atomization device for producing microcrystalline copper alloy powder by rapid condensation

CN122007430ACN 122007430 ACN122007430 ACN 122007430ACN-122007430-A

Abstract

The invention relates to a water atomization device for producing microcrystalline copper alloy powder by rapid condensation, which comprises an atomization cylinder, wherein a vertical crucible catheter is arranged in the center of the top of the atomization cylinder, an annular atomizer is fixedly connected to the outer surface of the top of the atomization cylinder, a plurality of inclined high-pressure atomization nozzles are arranged on the atomizer, a horizontally arranged rotary centrifugal disk is arranged at the middle and upper parts of the atomization cylinder and is positioned under the crucible catheter, a motor is connected to the lower part of the rotary centrifugal disk and drives the rotary centrifugal disk to rotate in the atomization cylinder, the rotating speed of the rotary centrifugal disk is 4800-5000 r/min, a cooling water pipe opposite to the rotary centrifugal disk is arranged on the atomization cylinder and used for conveying cooling water to the upper surface of the rotary centrifugal disk, a spoke rod is fixedly connected to the outer wall of the rotary centrifugal disk, and the outer end of the spoke rod is fixedly connected to an outer baffle ring. The water atomization device combines high-pressure atomization cooling and centrifugal secondary cooling to realize that spherical metal powder with a microcrystalline structure can be manufactured in a water atomization mode.

Inventors

  • YU KAIYI
  • FANG QIAOZHEN

Assignees

  • 浙江京球新材料有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (7)

  1. 1. The water atomization device for producing microcrystalline copper alloy powder through rapid condensation comprises an atomization cylinder (1), wherein a vertical crucible liquid guide tube (2) is arranged in the center of the top of the atomization cylinder (1), an annular atomizer (3) is sleeved on the crucible liquid guide tube (2), the atomizer (3) is fixed on the outer surface of the top of the atomization cylinder (1), and a plurality of obliquely arranged high-pressure atomization nozzles which are distributed annularly are arranged on the atomizer (3), and the water atomization device is characterized in that a rotary centrifugal disc (4) which is horizontally arranged is arranged at the middle and upper parts of the atomization cylinder (1), the rotary centrifugal disc (4) is positioned under the crucible liquid guide tube (2), a motor is connected to the lower part of the rotary centrifugal disc (4), the motor drives the rotary centrifugal disc (4) to rotate in the atomization cylinder (1), and the rotary speed of the rotary centrifugal disc (4) is 4800-5000 r/min; the atomizing cylinder (1) is provided with a cooling water pipe (5) opposite to the rotary centrifugal disc (4), the cooling water pipe (5) is used for conveying cooling water (c) to the upper surface of the rotary centrifugal disc (4), the outer wall of the rotary centrifugal disc (4) is fixedly connected with a plurality of annular distributed spoke rods (7), and the outer ends of the spoke rods (7) are fixedly connected with an outer baffle ring (6) with a circular arc-shaped section.
  2. 2. The water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 1, wherein the central axis of the rotary centrifugal disc (4), the central axis of the crucible catheter (2), the central axis of the outer baffle ring (6) and the central axis of the atomization cylinder (1) are coincided, the spoke rods (7) are round rods, and the spoke rods (7) are uniformly distributed annularly around the central axis of the rotary centrifugal disc (4); the high-pressure atomizing nozzle on the atomizer (3) sprays high-pressure water mist (a), the crucible catheter (2) flows out of the metal liquid (b), and the junction of the high-pressure water mist (a) is positioned under the crucible catheter (2) and is contacted with the metal liquid (b).
  3. 3. The water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 2 is characterized in that a conical protective guide cover (9) is inserted into an atomization cylinder (1) right above a rotary centrifugal disc (4), the protective guide cover (9) is positioned below a junction of high-pressure water mist (a), a conical supporting disc (8) is inserted into the atomization cylinder (1) right below the rotary centrifugal disc (4), a vertical supporting tube (81) is formed in the middle of the supporting disc (8), a plurality of inclined supporting rods (11) which are distributed annularly are fixedly connected to the upper end of the supporting tube (81) through the rotary centrifugal disc (4), the outer ends of the inclined supporting rods (11) are fixedly connected to the protective guide cover (9), and the rotary centrifugal disc (4) is connected to the supporting tube (81) through a bearing; The cooling water pipe (5) is fixedly inserted into the supporting pipe (81), the upper end of the cooling water pipe (5) extends out of the supporting pipe (81) to face the inner wall of the protective air guide sleeve (9), the lower end of the cooling water pipe penetrates through the supporting disc (8) and is fixedly connected with the water supply pipe (24), the water supply pipe (24) is fixedly inserted into the atomizing barrel (1), a cooling water source is arranged at the outer side of the atomizing barrel (1), and the water supply pipe (24) is connected with the cooling water source; The motor is arranged on the outer side of the atomizing cylinder (1), a horizontal first transmission shaft (17) is fixedly connected to a rotating shaft of the motor, the first transmission shaft (17) penetrates through a cylinder wall plug bush of the atomizing cylinder (1) and is fixedly connected with a driving bevel gear (16), a driven bevel gear (15) is meshed on the driving bevel gear (16), a vertical second transmission shaft (14) is fixedly inserted into the driven bevel gear (15), a horizontal driving gear (13) is fixedly connected to an upper plug bush of the second transmission shaft (14), a driven gear (12) is meshed on the driving gear (13), a connecting shaft sleeve (41) is formed in the middle of the lower end face of the rotary centrifugal disc (4), the connecting shaft sleeve (41) is sleeved on a supporting tube (81), the driven gear (12) is fixedly sleeved on the connecting shaft sleeve (41), and the driving gear (13) and the driven gear (12) are located under the rotary centrifugal disc (4); The upper end face of the supporting disc (8) is provided with a circular positioning boss (82), a cylindrical protective isolation cover (19) is sleeved on the positioning boss (82), the upper ends of the protective isolation cover (19) are sleeved on the outer sides of the driving gear (13) and the driven gear (12) and are close to the lower end face of the rotary centrifugal disc (4), a circular connecting disc (21) is fixedly inserted in the protective isolation cover (19), the second transmission shaft (14) is connected to the connecting disc (21) through a bearing, a plurality of annularly distributed connecting columns (22) are fixedly connected to the lower end face of the connecting disc (21), and the lower ends of the connecting columns (22) are fixedly connected to the supporting disc (8); The protective isolation cover (19) is fixedly connected with a plurality of annularly-distributed bearing tubes (18), the outer ends of the bearing tubes (18) are fixedly connected to the inner wall of the atomizing barrel (1), the first transmission shaft (17) is connected into the bearing tubes (18) through bearings, the lower tube wall of the bearing tubes (18) is fixedly connected with inclined bearing rods (20), and the lower ends of the bearing rods (20) are fixedly connected to the outer wall of the supporting disc (8).
  4. 4. The water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 3, wherein the protective isolation cover (19) and the atomization cylinder (1) are respectively provided with a through hole opposite to the first transmission shaft (17), and the through hole diameters of the protective isolation cover (19) and the atomization cylinder (1) are respectively larger than the diameter of the first transmission shaft (17) and smaller than the inner hole diameter of the bearing tube (18).
  5. 5. A water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 3, wherein the rotary centrifugal disc (4) is provided with two groups of bearings, the bearing at the lower part in the rotary centrifugal disc (4) extends out of the lower end face of the connecting shaft sleeve (41) and abuts against a cylindrical bracket (23), and the bracket (23) is sleeved on the supporting tube (81) and fixedly connected to the connecting disc (21).
  6. 6. The water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 3 is characterized in that the diameter of an outer ring at the lower end of the protective air guide sleeve (9) is smaller than that of an outer ring of the rotary centrifugal disc (4), a cylindrical flow-limiting sleeve (10) is fixed in the protective air guide sleeve (9), an inclined strut (11) is fixedly connected to the inner wall of the flow-limiting sleeve (10), and the outer wall of the flow-limiting sleeve (10) and the outer ring at the lower end of the protective air guide sleeve (9) are arranged in the same cylindrical surface.
  7. 7. The water atomization device for producing microcrystalline copper alloy powder by rapid condensation according to claim 2, wherein the circular arc center of the cross section of the outer baffle ring (6) is positioned between the upper rim and the lower rim of the outer baffle ring (6); The lower part of the outer baffle ring (6) is sleeved with a circular supporting ring (25), a plurality of annularly distributed balls are embedded on the supporting ring (25), the balls are abutted against the outer wall of the outer baffle ring (6), a plurality of annularly distributed connecting rods (26) are fixedly connected on the supporting ring (25), and the outer ends of the connecting rods (26) are fixedly connected on the inner wall of the atomizing cylinder (1).

Description

Water atomization device for producing microcrystalline copper alloy powder by rapid condensation Technical Field The invention relates to the technical field of water atomization equipment, in particular to a water atomization device for producing microcrystalline copper alloy powder by rapid condensation. Background The copper alloy powder is one of the basic raw materials in the powder metallurgy industry, and has good application prospect in industrial production, especially in the fields of powder metallurgy, manufacturing mechanical parts, producing friction materials, antifriction materials, superhard materials, magnetic materials, lubricants and products thereof, chemical industry, cutting, heating materials, welding rods and the like. At present, copper alloy powder can be manufactured through water atomization, which is mainly characterized in that copper alloy is smelted, molten metal liquid is led into an atomization cylinder, the molten metal liquid is impacted into metal powder through high-pressure water (the pressure is 15-25 MPa), but the conventional atomization method has the following problems that the water flow rate of the conventional atomization method is large, namely, the water pressure impact force of the atomization method is large, powder with a microcrystalline (micron-sized crystal grain) structure is easy to form, but the shape of the powder is irregular, when the water flow rate of the atomization method is small, namely, the water pressure impact force of the atomization method is small, the metal liquid is easy to form into a spherical shape through water atomization, the crystal grain is relatively large, the effect of a non-microcrystalline structure is achieved, meanwhile, the oxygen content of the powder is high, and therefore, a water atomization device capable of realizing the microcrystalline structure and being spherical needs to be designed. Disclosure of Invention The invention aims at overcoming the defects of the prior art, and provides a water atomization device for producing microcrystalline copper alloy powder by rapid condensation, which combines high-pressure atomization cooling and centrifugal secondary cooling to realize that spherical metal powder with a microcrystalline structure can be manufactured by a water atomization mode. The water atomization device for producing microcrystalline copper alloy powder through rapid condensation comprises an atomization cylinder, wherein a vertical crucible liquid guide pipe is arranged in the center of the top of the atomization cylinder, an annular atomizer 3 is sleeved on the crucible liquid guide pipe 2, the atomizer 3 is fixed on the outer surface of the top of the atomization cylinder 1, a plurality of obliquely arranged high-pressure atomization nozzles which are distributed annularly are arranged on the atomizer, a horizontally arranged rotary centrifugal disc is arranged at the middle and upper parts of the atomization cylinder and is positioned right below the crucible liquid guide pipe, a motor is connected to the lower part of the rotary centrifugal disc, the motor drives the rotary centrifugal disc to rotate in the atomization cylinder, and the rotary speed of the rotary centrifugal disc is 4800-5000 r/min; the atomizing cylinder is provided with a cooling water pipe opposite to the rotary centrifugal disk, the cooling water pipe is used for conveying cooling water to the upper surface of the rotary centrifugal disk, the outer wall of the rotary centrifugal disk is fixedly connected with a plurality of annular distributed spoke rods, and the outer ends of the spoke rods are fixedly connected with an outer baffle ring with a circular arc-shaped section. Preferentially, the central axis of the rotary centrifugal disk, the central axis of the crucible catheter, the central axis of the outer baffle ring and the central axis of the atomizing barrel are overlapped, and the spoke rods are round rods and are uniformly distributed annularly around the central axis of the rotary centrifugal disk; The high-pressure atomizing nozzle on the atomizer sprays high-pressure water mist, the crucible liquid guide pipe flows out of the metal liquid, and the junction of the high-pressure water mist is positioned right below the crucible liquid guide pipe and is in contact with the metal liquid. Preferably, a conical protection air guide sleeve is inserted into the atomization cylinder right above the rotary centrifugal disc, and the protection air guide sleeve is positioned below the junction of the high-pressure water mist a; a conical supporting disc is inserted into the atomizing cylinder right below the rotary centrifugal disc, a vertical supporting tube is formed in the middle of the supporting disc, and a plurality of annular inclined supporting rods are fixedly connected to the upper end of the supporting tube through the rotary centrifugal disc, and the outer ends of the inclined supporting rods are fixedly connect