阅读说明：本技术 一种金属粉气雾化设备尾气降温装置 (Tail gas cooling device of metal powder gas atomization equipment ) 是由 张柯 于 2019-11-04 设计创作，主要内容包括：一种金属粉气雾化设备尾气降温装置,包括雾化器、尾气管组件、布袋收尘器,尾气管组件连通雾化器的出气口和布袋收尘器的进气口,水平管道一端与雾化器出气口连通,另一端与旋风筒的进气口连通,旋风筒内设置散热锥,散热锥表面上固定翅片；散热锥内固定有内层,内层与散热锥外壁之间形成容置冷却水的空腔；散热锥的底部固定进水组件,进水组件包括外壳、内壳、水涡轮、进水管和出水管；内层顶端开口,开口处连通下水管,下水管向内壳排水；散热锥内固定一根同轴的转轴,转轴穿过内壳伸入外壳中,转轴与内壳底面通过轴封转动密封连接,转轴底端固定水涡轮。该装置能够对尾气进行有效降温。(A tail gas cooling device of metal powder gas atomization equipment comprises an atomizer, a tail gas pipe assembly and a cloth bag dust collector, wherein the tail gas pipe assembly is communicated with a gas outlet of the atomizer and a gas inlet of the cloth bag dust collector; an inner layer is fixed in the heat dissipation cone, and a cavity for containing cooling water is formed between the inner layer and the outer wall of the heat dissipation cone; the bottom of the heat dissipation cone is fixed with a water inlet assembly, and the water inlet assembly comprises an outer shell, an inner shell, a water turbine, a water inlet pipe and a water outlet pipe; the top end of the inner layer is provided with an opening, the opening is communicated with a sewer pipe, and the sewer pipe drains water to the inner shell; a coaxial rotating shaft is fixed in the heat dissipation cone, the rotating shaft penetrates through the inner shell and extends into the outer shell, the rotating shaft is connected with the bottom surface of the inner shell in a rotating and sealing mode through a shaft seal, and a water turbine is fixed at the bottom end of the rotating shaft. The device can effectively cool down tail gas.)

1. A tail gas cooling device of metal powder gas atomization equipment comprises an atomizer, a tail gas pipe component and a cloth bag dust collector, wherein the tail gas pipe component is communicated with a gas outlet of the atomizer and a gas inlet of the cloth bag dust collector,

the tail gas pipe assembly comprises a horizontal pipeline, a cyclone, a water inlet assembly and a cooling tower, wherein one end of the horizontal pipeline is communicated with an air outlet of the atomizer, the other end of the horizontal pipeline is communicated with an air inlet of the cyclone, the air inlet of the cyclone is positioned in the middle or at the lower part of a cylindrical barrel of the cyclone, and a spiral flow deflector is fixed on the inner wall of the cylindrical barrel of the cyclone to enable airflow to rise spirally;

a heat dissipation cone is arranged in the cyclone cylinder, the heat dissipation cone is coaxial with the cylindrical cylinder body of the cyclone cylinder, and the bottom end of the heat dissipation cone is flush with the bottom end of the air inlet of the cyclone cylinder;

fins are fixed on the surface of the radiating cone;

an inner layer is fixed in the heat dissipation cone, a cavity for containing cooling water is formed between the inner layer and the outer wall of the heat dissipation cone, and the inner layer is also conical and is coaxial with the outer wall;

the bottom of the heat dissipation cone is fixed with a water inlet assembly, and the water inlet assembly comprises an outer shell, an inner shell, a water turbine, a water inlet pipe and a water outlet pipe; the outer shell is communicated with the bottom surface of the outer wall of the heat dissipation cone through a rotating flange, the inner shell is communicated with the bottom surface of the inner layer through a rotating flange, the outer shell is fixedly connected with the inner shell, and the two rotating flanges are coaxial with the heat dissipation cone;

the top end of the inner layer is provided with an opening, the opening is communicated with a sewer pipe, and the sewer pipe drains water to the inner shell; a coaxial rotating shaft is fixed in the heat dissipation cone, the rotating shaft penetrates through the inner shell and extends into the outer shell, the rotating shaft is connected with the bottom surface of the inner shell in a rotating and sealing mode through a shaft seal, and a water turbine is fixed at the bottom end of the rotating shaft;

the side surface of the outer shell is communicated with a water inlet pipe, the inner shell is communicated with a water outlet pipe, the water inlet pipe is communicated with the bottom of a water tank of the cooling tower, and the water outlet pipe is communicated with a water inlet at the top end of the cooling tower.

2. The tail gas cooling device for metal powder gas atomizing equipment according to claim 1, wherein a transmission shaft is fixed to the top of the heat dissipation cone, the transmission shaft extends into the volute, a turbine is fixed to one end of the transmission shaft located in the volute, an air inlet cone pipe is fixed to the volute, the air inlet cone pipe is coaxial with the volute, the volute is radially communicated with a tangential pressurization air pipe, a pressurization necking is arranged at the end portion of the pressurization air pipe, and the pressurization necking is communicated with an exhaust pipe of the bag dust collector.

3. The device for cooling tail gas of metal powder atomizing equipment according to claim 1, wherein the horizontal duct is relatively hot, and a thermoelectric module is fixed on the surface of the horizontal duct, the thermoelectric module is used for supplying power to a water pump, and the water pump is installed on the water inlet pipe.

4. The tail gas cooling device for metal powder atomizing equipment according to any one of claims 1 to 3, wherein the inclination angle between the spiral flow deflector and the horizontal plane is in the range of 20 to 40 degrees.

5. The device for cooling tail gas of metal powder atomization equipment according to any one of claims 1 to 3, wherein the air inlet of the cyclone is arranged obliquely upwards, and the included angle between the air inlet of the cyclone and the horizontal plane is 10-30 degrees.

Technical Field

The invention relates to an auxiliary device of gas atomization equipment for 3D printing metal powder production, in particular to a tail gas cooling device.

Background

Inert gas is needed to impact molten metal droplets in the process of producing 3d printing metal powder by gas atomization, the temperature of tail gas of the metal droplets is usually higher to be about 200 ℃, and the upper limit of the working temperature of a cloth bag in a cloth bag dust collector is about 180 ℃. Therefore, the problem of cloth bag damage often occurs.

In addition, the atomizer is usually connected in parallel to share one tail gas pipeline and a dust collector, and if the atomizer works simultaneously, the temperature of the tail gas is higher.

Disclosure of Invention

The invention aims to provide a cooling device which can effectively cool the tail gas of an atomizer and is not suitable for additional energy.

In order to achieve the purpose, the invention comprises a tail gas cooling device of metal powder gas atomization equipment, which comprises an atomizer, a tail gas pipe assembly and a cloth bag dust collector, wherein the tail gas pipe assembly is communicated with a gas outlet of the atomizer and a gas inlet of the cloth bag dust collector,

the tail gas pipe assembly comprises a horizontal pipeline, a cyclone, a water inlet assembly and a cooling tower, wherein one end of the horizontal pipeline is communicated with an air outlet of the atomizer, the other end of the horizontal pipeline is communicated with an air inlet of the cyclone, the air inlet of the cyclone is positioned in the middle or at the lower part of a cylindrical barrel of the cyclone, and a spiral flow deflector is fixed on the inner wall of the cylindrical barrel of the cyclone to enable airflow to rise spirally;

a heat dissipation cone is arranged in the cyclone cylinder, the heat dissipation cone is coaxial with the cylindrical cylinder body of the cyclone cylinder, and the bottom end of the heat dissipation cone is flush with the bottom end of the air inlet of the cyclone cylinder;

fins are fixed on the surface of the radiating cone;

an inner layer is fixed in the heat dissipation cone, a cavity for containing cooling water is formed between the inner layer and the outer wall of the heat dissipation cone, and the inner layer is also conical and is coaxial with the outer wall;

the bottom of the heat dissipation cone is fixed with a water inlet assembly, and the water inlet assembly comprises an outer shell, an inner shell, a water turbine, a water inlet pipe and a water outlet pipe; the outer shell is communicated with the bottom surface of the outer wall of the heat dissipation cone through a rotating flange, the inner shell is communicated with the bottom surface of the inner layer through a rotating flange, the outer shell is fixedly connected with the inner shell, and the two rotating flanges are coaxial with the heat dissipation cone;

the top end of the inner layer is provided with an opening, the opening is communicated with a sewer pipe, and the sewer pipe drains water to the inner shell; a coaxial rotating shaft is fixed in the heat dissipation cone, the rotating shaft penetrates through the inner shell and extends into the outer shell, the rotating shaft is connected with the bottom surface of the inner shell in a rotating and sealing mode through a shaft seal, and a water turbine is fixed at the bottom end of the rotating shaft;

the side surface of the outer shell is communicated with a water inlet pipe, the inner shell is communicated with a water outlet pipe, the water inlet pipe is communicated with the bottom of a water tank of the cooling tower, and the water outlet pipe is communicated with a water inlet at the top end of the cooling tower.

Furthermore, a transmission shaft is fixed at the top of the radiating cone, the transmission shaft extends into the volute, a turbine is fixed at one end of the transmission shaft, which is positioned in the volute, an air inlet cone pipe is fixed on the volute, the air inlet cone pipe is coaxial with the volute, the volute is radially communicated with a tangent pressurizing air pipe, a pressurizing throat is arranged at the end part of the pressurizing air pipe, and the pressurizing throat is communicated with an exhaust pipe of the bag dust collector.

Furthermore, the horizontal pipeline is hot, and a thermoelectric module is fixed on the surface of the horizontal pipeline and used for supplying power to a water pump, and the water pump is installed on the water inlet pipe.

Preferably, the inclination angle between the spiral guide vane and the horizontal plane is in the range of 20-40 degrees.

Preferably, the air inlet of the cyclone is arranged obliquely upwards, and the included angle between the air inlet of the cyclone and the horizontal plane is 10-30 degrees.

The invention has the beneficial effects that:

1. the tail gas of the atomizer can be effectively cooled, and the safety of a cloth bag of the cloth bag dust collector is ensured;

2. the device is not suitable for additional energy, is convenient to transform the original equipment, and has self-adaptability.

3. The structure is simple, the maintenance and the use are convenient, and the cost is low.

Drawings

FIG. 1 is a system schematic.

Fig. 2 is a schematic view of the cooling device.

Fig. 3 is a schematic view of the internal structure of the cooling cone.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-3, a tail gas cooling device for a metal powder gas atomizing apparatus comprises an atomizer 10, a tail gas pipe assembly 20, and a bag dust collector 60, wherein the tail gas pipe assembly 20 is communicated with a gas outlet of the atomizer 10 and a gas inlet of the bag dust collector 60.

The exhaust pipe assembly 20 comprises a horizontal pipeline, a cyclone 30, a water inlet assembly 40 and a cooling tower 50. One end of the horizontal pipeline is communicated with the air outlet of the atomizer 10, the other end of the horizontal pipeline is communicated with the air inlet of the cyclone cylinder 30, the air inlet of the cyclone cylinder 30 is arranged obliquely upwards, and the included angle between the air inlet and the horizontal plane is 10-30 degrees. The air inlet of the cyclone 30 is located at the middle or lower part of the cylindrical body, and the inner wall of the cylindrical body is fixed with a spiral flow deflector to lead the air flow to rise spirally. The cyclone 30 is internally provided with the heat dissipation cone 31, the rotation of the cone is facilitated due to the arrangement of the cone, the resistance is higher if the airflow flows from bottom to top, and if the airflow simultaneously works with less equipment, the initial resistance cannot be overcome by the barrel, so that the airflow cannot rotate. The cone angle of the heat dissipation cone 31 is preferably between 60-80 degrees. Is made of aluminum alloy with lighter weight. However, other light materials may be used, and the fins are inserted into the inner portion of the heat dissipation cone 31, and the heat dissipation effect can be ensured.

The heat dissipation cone 31 is coaxial with the cylindrical barrel, and the bottom end of the heat dissipation cone 31 is flush with the bottom end of the air inlet of the cyclone barrel 30. The heat dissipation cone 31 has fins 32 fixed on its surface. The fins 32 are arranged obliquely, and the fins 32 are preferably arranged in layers. The three-layer structure is divided into three layers, and the included angle between each layer and the axis is different. Preferably, the angle of the fins 32 with the axis decreases from the lowermost layer to the uppermost layer. The whole is in the range of 60-20 degrees.

An inner layer 33 is fixed in the heat dissipation cone 31, a cavity for containing cooling water is formed between the inner layer 33 and the outer wall of the heat dissipation cone 31, and the inner layer 33 is also conical and is coaxial with the outer wall. The bottom of the heat dissipation cone 31 is fixed with a water inlet assembly 40.

The water intake assembly 40 includes an outer casing 41, an inner casing 42, a water turbine 43, a water inlet pipe 44 and a water outlet pipe 45. The outer shell 41 is communicated with the bottom surface of the outer wall of the heat dissipation cone 31 through a rotating flange, the inner shell 42 is communicated with the bottom surface of the inner layer 33 through a rotating flange, the outer shell 41 is fixedly connected with the inner shell 42, and the two rotating flanges are coaxial with the heat dissipation cone 31. The inner layer 33 is open at the top end and is communicated with the downcomer 34, and the downcomer 34 drains water to the inner shell 42. A coaxial rotating shaft 35 is fixed in the radiating cone 31, the rotating shaft 35 penetrates through the inner shell 42 and extends into the outer shell 41, the rotating shaft 35 is connected with the bottom surface of the inner shell 42 in a rotating and sealing mode through a shaft seal, and a water turbine 43 is fixed at the bottom end of the rotating shaft 35. The side of the outer shell 41 is communicated with a water inlet pipe 44, and the inner shell 42 is communicated with a water outlet pipe 45. The water inlet pipe 44 is communicated with the bottom of the water tank of the cooling tower, and the water outlet pipe 45 is communicated with the water inlet at the top end of the cooling tower. The tail gas enters the cyclone cylinder 30 to drive the heat dissipation cone 31 to rotate, so that the water turbine 43 is driven to rotate, and the water turbine 43 pumps the water in the water tank into the shell 41 and presses the water into a cavity in the heat dissipation cone 31. The water flows from the down pipes 34 into the inner shell and out the outlet pipes 45.

The top of the radiation cone 31 is fixed with a transmission shaft 36, the transmission shaft 36 extends into a volute 38, one end of the transmission shaft 36, which is positioned in the volute 38, is fixed with a turbine 37, an air inlet cone 39 is fixed on the volute 38, the air inlet cone 39 is coaxial with the volute 38, the volute 38 is radially communicated with a tangential pressurizing air pipe 310, a pressurizing necking 311 is arranged at the end part of the pressurizing air pipe 310, and the pressurizing necking 311 is communicated with an exhaust pipe 62 of the bag dust collector 60. The exhaust duct at the top of the cyclone 30 communicates with the inlet of the bag collector 60. The turbine 37, the volute 38, etc., which are actually a turbo charger, introduce the external air flow to accelerate the air flow velocity in the pressurized organ 310, and the throat 311 is communicated with the exhaust pipe 62 of the bag dust collector 60, so as to perform the negative pressure suction function and accelerate the air flow velocity in the bag dust collector 60. The main reason for this is that the situation that a plurality of machines work simultaneously is considered, a plurality of atomizers work simultaneously, the tail gas amount is large, the air flow speed is reduced obviously after entering the cyclone cylinder, dust is easy to accumulate in the pipeline between the cyclone cylinder and the bag dust collector, the air flow speed in the bag dust collector is accelerated, and the probability of dust deposition in the pipeline can be reduced.

By cooling the heat dissipation cone 31, the temperature of the air flow can be kept within the working temperature range of the bag dust collector. The device has the self-adaptation effect, and the air flow is big, and the velocity of flow is fast, and cooling water circulation rate also accelerates to guarantee the cooling effect. And dust can not be deposited in the pipeline, and the maintenance period is long.

The horizontal duct 20, which represents relatively hot, has a thermoelectric module 70 (CN201510219955.0 thermoelectric module and method of manufacturing the same) fixed to its surface. The thermoelectric module 70 is used to supply power to the water pump 51, and the water pump 51 is mounted on the water inlet pipe 44. The water pump is used for improving the water flow speed and improving the heat dissipation effect. The rotation speed of the heat dissipation cone 31 is increased.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.