Stainless steel powder cooling device for additive manufacturing

Abstract

The utility model provides a stainless steel powder cooling device for additive manufacturing, which comprises a cooling tank body, a cooling pipeline and an external thermal insulation cover, the upper sides of the left end and the right end of the outside of the cooling tank body are obliquely provided with mounting notches, heat dissipation fans are fixed in the two mounting notches, a cross rod is transversely fixed in the cooling tank body, and the cross rod is fixedly connected with the cooling pipeline. The lower end of the exterior of the cooling tank body is sleeved with an external thermal insulation cover, a cooling water tank is arranged between the external thermal insulation cover and the cooling tank body, and a sealing cover is fixed to the upper end of the cooling water tank in a sealed mode. By means of the design, the problem that the heat exchange cooling effect of an original device on powder only through an air cooling structure is common and needs to be improved is solved, the internal and external dual cooling structure is designed, stainless steel powder can be rapidly cooled, the powder quality is ensured, the production efficiency is high, and the device is suitable for batch production.

Description

Technical Field

[0001] The utility model discloses a stainless steel powder cooling device for additive manufacturing, belonging to the technical field of cooling equipment. Background Art

[0002] 434 ferritic stainless steel. Contains 12% to 30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its resistance to chloride stress corrosion is better than other types of stainless steel. 434 (18Cr-1Mo) is an improved steel grade of 430 steel. It is more salt-resistant than 430 steel and is used for automotive exterior decoration materials. The 434 hot (300-500℃) stainless steel powder produced by vacuum air atomization equipment needs to be cooled in the next step of processing.

[0003] Publication No.: CN209406117U, mentions a lime powder cooling device. When the device cools active lime, the high-temperature active lime is introduced into the discharging funnel through the feeding pipe, and the active lime is introduced into the cooling cavity through the discharging funnel. At the same time, air is introduced into the cooling cavity through the air inlet pipe. The air and the active lime exchange heat under the stirring of the stirring blades, thereby cooling the active lime. The active lime after heat exchange is discharged from the discharging port, and the air after heat exchange is discharged from the screen. The lime powder cooling device can realize rapid cooling of the active lime and improve production efficiency. However, the device only performs heat exchange and cooling of the powder through the air cooling structure, and the effect is general and needs to be improved. Now, a stainless steel powder cooling device for additive manufacturing is urgently needed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a stainless steel powder cooling device for additive manufacturing to solve the problems raised in the above-mentioned background technology. The utility model designs an internal and external double cooling structure, which can quickly cool the stainless steel powder to ensure the quality of the powder, with high production efficiency and suitable for mass production.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a stainless steel powder cooling device for additive manufacturing, comprising a cooling tank body, a cooling pipe and an external thermal insulation cover, the upper sides of the left and right ends of the outer side of the cooling tank body are inclined with installation slots, and heat dissipation fans are fixed in the two installation slots, a cross bar is transversely fixed inside the cooling tank body, a support rod is longitudinally installed in the middle of the upper end of the cross bar, a conical material distribution hopper is installed on the upper end of the support rod, the external thermal insulation cover is sleeved on the lower end of the outer side of the cooling tank body, a cooling water trough is provided between the external thermal insulation cover and the cooling tank body, a sealing cover is sealed and fixed at the upper end of the cooling water trough, a liquid adding nozzle is penetrated through the left side of the upper end of the sealing cover, a plurality of cooling pipes are provided, and the plurality of cooling pipes are staggered and pass through between the cooling tank body and the external thermal insulation cover.

[0006] Furthermore, a feed port is provided at the upper end of the cooling tank body.

[0007] Furthermore, a metal bottom cover is installed at the lower end of the cooling tank body.

[0008] Furthermore, a plurality of supporting legs are fixed at equal angles on the lower end of the external thermal insulation cover, and a supporting plate is installed on the lower end of each of the plurality of supporting legs.

[0009] Furthermore, a liquid discharge pipe opening is provided through the lower side of the right end of the external thermal insulation cover.

[0010] Furthermore, both ends of the plurality of cooling pipes are connected to external cold water pipes and a cold water pump.

[0011] The beneficial effects of the utility model: the utility model is a stainless steel powder cooling device for additive manufacturing. Because the utility model adds a cooling tank body, a heat dissipation fan, a conical distribution hopper, a cooling pipe, an external thermal insulation cover, a cooling water tank and a sealing cover, our design improvement and actual use show that the device has a reasonable structure and good practicality. An internal and external double cooling structure is designed to quickly cool down the stainless steel powder, ensure the powder quality, have high production efficiency, and are suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a stainless steel powder cooling device for additive manufacturing of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of a stainless steel powder cooling device for additive manufacturing of the utility model;

[0015] Figure 3 It is a three-dimensional schematic diagram of a conical material distribution hopper of a stainless steel powder cooling device for additive manufacturing of the utility model;

[0016] In the figure: 1-cooling tank body, 2-feeding port, 3-cooling fan, 4-conical dividing hopper, 5-support rod, 6-cross bar, 7-cooling pipe, 8-external insulation cover, 9-cooling water tank, 10-sealing cover, 11-liquid adding pipe mouth, 12-liquid draining pipe mouth, 13-metal bottom cover, 14-support leg. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 3 The utility model provides a technical solution: a stainless steel powder cooling device for additive manufacturing, comprising a cooling tank body 1, a cooling pipe 7 and an external thermal insulation cover 8. The upper sides of the left and right ends of the outer side of the cooling tank body 1 are inclined with installation slots, and heat dissipation fans 3 are fixed in the two installation slots. A cross bar 6 is transversely fixed inside the cooling tank body 1, and a support rod 5 is longitudinally installed in the middle of the upper end of the cross bar 6. A conical material distribution hopper 4 is installed on the upper end of the support rod 5. The external thermal insulation cover 8 is sleeved on the lower end of the outer side of the cooling tank body 1, and a cooling water trough 9 is provided between the external thermal insulation cover 8 and the cooling tank body 1. A sealing cover 10 is sealed and fixed on the upper end of the cooling water trough 9, and a liquid adding nozzle 11 is penetrated on the left side of the upper end of the sealing cover 10. A plurality of cooling pipes 7 are provided, and the plurality of cooling pipes 7 are staggered and pass through between the cooling tank body 1 and the external thermal insulation cover 8. This design solves the problem that the original device only uses an air cooling structure to perform heat exchange and cooling of the powder, and the effect is average and needs to be improved.

[0019] As the first embodiment of the utility model: the upper end of the cooling tank body 1 is provided with a feed port 2, through which the 434 hot (300-500°C) stainless steel powder produced by the vacuum air atomization equipment is conveniently added into the cooling tank body 1 for cooling. The lower end of the cooling tank body 1 is provided with a metal bottom cover 13, through which the stainless steel powder in the cooling tank body 1 can be prevented from being discharged by itself.

[0020] A plurality of support legs 14 are fixed at equal angles at the lower end of the external insulation cover 8, and a support plate is installed at the lower end of each of the support legs 14. The added plurality of support legs 14 facilitates the support of the external insulation cover 8 and the cooling tank body 1, and the setting of the external insulation cover 8 facilitates the removal of heat conducted to the outer side of the cooling tank body 1. A drain pipe 12 is provided on the lower right end of the external insulation cover 8. The added drain pipe 12 facilitates the water in the cooling water tank 9 that takes away heat to be discharged into the external water pool. Both ends of the plurality of cooling pipes 7 are connected to the external cold water pipe and the cold water pump. The added plurality of cooling pipes 7 facilitates the removal of heat from the stainless steel powder inside the cooling tank body 1.

[0021] As the second embodiment of the present utility model: when 434 hot (300-500℃) stainless steel powder produced by vacuum air atomization equipment is added into the cooling tank body 1 through the feed port 2 for cooling, the stainless steel powder first falls to the side of the conical distribution hopper 4 for dispersion, and two heat dissipation fans 3 are started at the same time. The two heat dissipation fans 3 can blow cold air to the stainless steel powder, and both ends of the multiple cooling pipes 7 are connected to the external cold water pipe and the cold water pump. When water is circulated into the multiple cooling pipes 7, the heat of the stainless steel powder in the cooling tank body 1 will be taken away in cooperation with the cold air blown by the two heat dissipation fans 3. At the same time, the cooling water tank 9 is filled with cold water, and the liquid adding pipe mouth 11 is connected to the external cold water pump, and the liquid discharge pipe mouth 12 is connected to the external water pool, so that the cooling water tank 9 will exchange heat with the stainless steel powder in contact with the inner wall of the cooling tank body 1, so as to achieve rapid heat dissipation and cooling of the stainless steel powder in the cooling tank body 1.

[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stainless steel powder cooling device for additive manufacturing, comprising a cooling tank (1), a cooling pipe (7) and an external temperature insulation cover (8), characterized in that: The upper sides of the left and right ends of the exterior of the cooling tank body (1) are both inclined with installation slots, and heat dissipation fans (3) are fixed in the two installation slots. A cross bar (6) is transversely fixed inside the cooling tank body (1), and a support rod (5) is longitudinally installed in the middle of the upper end of the cross bar (6), and a conical material distribution hopper (4) is installed at the upper end of the support rod (5); The external thermal insulation cover (8) is sleeved on the lower end of the outside of the cooling tank body (1), a cooling water trough (9) is provided between the external thermal insulation cover (8) and the cooling tank body (1), a sealing cover (10) is sealed and fixed to the upper end of the cooling water trough (9), a liquid filling nozzle (11) is penetrated through the left side of the upper end of the sealing cover (10), and a plurality of cooling pipes (7) are provided, and the plurality of cooling pipes (7) are staggered and pass through between the cooling tank body (1) and the external thermal insulation cover (8).

2. The stainless steel powder cooling device for additive manufacturing according to claim 1, characterized in that: The upper end of the cooling tank body (1) is provided with a feed inlet (2).

3. The stainless steel powder cooling device for additive manufacturing according to claim 1, characterized in that: A metal bottom cover (13) is installed at the lower end of the cooling tank body (1).

4. The stainless steel powder cooling device for additive manufacturing according to claim 1, characterized in that: A plurality of support legs (14) are fixed at equal angles on the lower end of the external heat insulation cover (8), and a support plate is installed on the lower end of each of the plurality of support legs (14).

5. The stainless steel powder cooling device for additive manufacturing according to claim 1, characterized in that: A liquid discharge pipe opening (12) is provided through the lower right end of the external temperature insulation cover (8).

6. The stainless steel powder cooling device for additive manufacturing according to claim 1, characterized in that: Both ends of the plurality of cooling pipes (7) are connected to external cold water pipes and a cold water pump.

Images