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CN-224209122-U - Multifunctional screening machine for screening metal 3D printing powder

CN224209122UCN 224209122 UCN224209122 UCN 224209122UCN-224209122-U

Abstract

The utility model relates to the technical field of metal 3D printing powder screening, in particular to a multifunctional screening machine for metal 3D printing powder screening, which comprises an integral frame, a feeding filtering system, a vacuum generator, a powder collecting system, an inert gas protection system, a screening system and a powder collecting system. The feeding filtering system realizes negative pressure high-efficiency feeding through the vacuum generator, a filter is arranged inside the feeding filtering system to prevent powder from blocking a gas path, the powder collecting system is provided with an oxygen content sensor and a pressure sensor, the real-time monitoring equipment is safe, and the inert gas protection system prevents powder from oxidation or explosion. The screening system adopts the synergistic effect of the vibrating motor and the ultrasonic generator, so that the screening efficiency is effectively improved and the screen is prevented from being blocked. The system has the advantages of modularized design, convenient assembly and maintenance, high feeding and screening efficiency and suitability for screening scenes of high-precision metal 3D printing powder.

Inventors

  • He Sihang

Assignees

  • 天津鹏辉航空器制造有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (9)

  1. 1. The multifunctional screening machine for screening the metal 3D printing powder is characterized by comprising an integral frame, a feeding filtering system, a vacuum generator, a powder collecting system, an inert gas protection system, a screening system and a powder collecting system, wherein the powder collecting system is fixed at the top end of the integral frame, the feeding filtering system is arranged above the powder collecting system and is connected with the powder collecting system through a flange, the screening system is arranged below the powder collecting system and is fixed in the middle of the integral frame, the powder collecting system is communicated with the screening system, the powder collecting system is arranged below the screening system, and the screening system is communicated with the powder collecting system; and a control screen, a pneumatic control system and an electric control system are arranged on the outer side of the integral frame.
  2. 2. The multifunctional screening machine for screening metal 3D printing powder according to claim 1, wherein the top of the feeding filtering system is connected with the vacuum generator, and the powder collecting system is connected with the inert gas protection system; the vacuum generator and the inert gas protection system are controlled by the pneumatic control system.
  3. 3. The multifunctional screening machine for screening metal 3D printing powder according to claim 2, wherein the feeding filtering system comprises a vacuum suction bin and a filter, the filter is arranged in the vacuum suction bin, a back blowing port is arranged at the top end of the vacuum suction bin, a feeding port is arranged on the side wall of the bottom end of the vacuum suction bin, and a feeding pipe is connected to the feeding port.
  4. 4. The multifunctional screening machine for screening metal 3D printing powder of claim 1, wherein the powder collecting system comprises a powder collecting tank and a vibrator, a discharge hole is formed in a conical hopper at the bottom of the powder collecting tank, and the vibrator is arranged at the discharge hole.
  5. 5. The multifunctional screening machine for screening metal 3D printing powder of claim 4, wherein an oxygen content sensor, a pressure sensor and a first level gauge are arranged at the top end of the powder collecting tank, a second level gauge is arranged at the bottom end of the powder collecting tank, and detection parts of the first level gauge and the second level gauge extend into the powder collecting tank.
  6. 6. The multifunctional screening machine for screening metal 3D printing powder according to claim 5, wherein the screening system comprises a screening tank, a screen, a vibrating motor and an ultrasonic generator, the screen is fixed inside the screening tank, the vibrating motor is respectively fixed on the outer walls of the two sides of the screening tank, and the ultrasonic generator is arranged at the bottom of the screen and used for providing high-frequency ultrasonic vibration.
  7. 7. The multifunctional screening machine for screening metal 3D printing powder of claim 6, wherein a breather valve is arranged at the top end of the screening tank, a waste channel is arranged on the side wall of the screening tank, and a waste interface is connected to the tail end of the waste channel.
  8. 8. The multifunctional screening machine for screening metal 3D printing powder of claim 6, wherein the vibration motor, the ultrasonic generator, the oxygen content sensor, the pressure sensor, the first level gauge and the second level gauge are all electrically connected with the electronic control system.
  9. 9. The multifunctional screening machine for screening metal 3D printing powder according to claim 1, wherein casters are arranged at four corners of the bottom end of the powder collecting system and the bottom end of the integral frame.

Description

Multifunctional screening machine for screening metal 3D printing powder Technical Field The utility model relates to the technical field of metal 3D printing powder screening, in particular to a multifunctional screening machine for screening metal 3D printing powder. Background The metal 3D printing technology has strict requirements on the particle size distribution, purity and oxygen content of the powder, but the traditional screening equipment has the following defects: The existing screening equipment relies on single mechanical vibration or single screening mode, screening efficiency is lower, and the screen cloth is stopped up easily to the fine powder, influences screening effect, is difficult to satisfy efficient production demand, and screening equipment structure is complicated, occupation space is big and lack modularized design, dismantles the maintenance difficulty, has increased the downtime and the maintenance cost of equipment. The metal powder is easy to react with oxygen in the air in the screening process, the risk of oxidization and even explosion exists, the existing equipment lacks an inert gas protection system, powder oxidization cannot be effectively prevented, and real-time monitoring of key parameters such as oxygen content, pressure and the like is also lacking, so that potential safety hazards cannot be effectively prevented. The vacuum feeding system of the existing equipment is low in efficiency, and lacks an effective filtering device, so that powder is easy to enter a gas path, and normal operation of the equipment is affected. Disclosure of utility model The utility model aims to provide a multifunctional screening machine for screening metal 3D printing powder, which solves the technical problems of complex structure, lack of modularized design, low feeding and screening efficiency and potential safety hazard of the existing screening equipment. In order to achieve the above purpose, the utility model provides a multifunctional screening machine for screening metal 3D printing powder, which comprises an integral frame, a feeding filtering system, a vacuum generator, a powder collecting system, an inert gas protection system, a screening system and a powder collecting system, wherein the powder collecting system is fixed at the top end of the integral frame, the feeding filtering system is arranged above the powder collecting system and is connected with the powder collecting system through a flange, the screening system is arranged below the powder collecting system and is fixed in the middle of the integral frame, the powder collecting system is communicated with the screening system, the powder collecting system is arranged below the screening system, and the screening system is communicated with the powder collecting system; and a control screen, a pneumatic control system and an electric control system are arranged on the outer side of the integral frame. Preferably, the top of the feeding filtering system is connected with the vacuum generator, and the powder collecting system is connected with the inert gas protection system; the vacuum generator and the inert gas protection system are controlled by the pneumatic control system. Preferably, the feeding filter system comprises a vacuum suction bin and a filter, wherein the filter is arranged in the vacuum suction bin, a back-blowing port is arranged at the top end of the vacuum suction bin, a feeding port is arranged on the side wall of the bottom end of the vacuum suction bin, and a feeding pipe is connected to the feeding port. Preferably, the powder collecting system comprises a powder collecting tank and a vibrator, wherein a discharge hole is formed in a conical hopper at the bottom of the powder collecting tank, and the vibrator is arranged at the discharge hole. Preferably, the top of receipts powder jar is provided with oxygen content sensor, pressure sensor and first charge level indicator, the bottom of receipts powder jar is provided with the second charge level indicator, first charge level indicator with the detection portion of second charge level indicator all stretches into receive in the powder jar. Preferably, the screening system comprises a screening tank, a screen, a vibrating motor and an ultrasonic generator, wherein the screen is fixed inside the screening tank, the vibrating motor is respectively fixed on the outer walls of two sides of the screening tank, and the ultrasonic generator is arranged at the bottom of the screen and used for providing high-frequency ultrasonic vibration. Preferably, the top of screening jar is provided with the breather valve, be provided with the waste material passageway on the lateral wall of screening jar, the end-to-end connection of waste material passageway has the waste material interface. Preferably, the vibration motor, the ultrasonic generator, the oxygen content sensor, the pressure sensor, the first level gauge and the second level gauge are all ele