Closed high-pressure wind field circulating system for 3D printing equipment

Abstract

The utility model relates to a closed type high-pressure wind field circulation system for 3D printing equipment, which comprises a sealed cabin, a compression air pump, a high-pressure air storage tank, an air knife, a filter assembly and a pressure sensor, a low-pressure area and a high-pressure area are arranged in the sealed cabin, the filter assembly is located in the low-pressure area, the air knife is located in the high-pressure area, and the pressure sensor is located in the high-pressure area. The filtering assembly in the low-pressure area is connected with a compression air pump, the compression air pump is connected with a high-pressure air storage tank, the high-pressure air storage tank is connected with an air knife in the sealed cabin through a pipeline, high-pressure airflow is jetted through an air knife shaping component to form a wind field, circulation is formed in the cabin, and in order to maintain pressure balance in the cabin, the air knife shaping component is connected with the high-pressure air storage tank. The external gas source fills inert gas into the sealed cabin, the filtered gas is discharged through the gas release port, and the operation of the compression gas pump and the closing of the valves in the low-pressure area and the high-pressure area are controlled, so that a stable flow field in the low-pressure area and the high-pressure area is maintained.

Description

Technical Field

[0001] This utility model belongs to the technical field of air field circulation system in 3D printing equipment, specifically relating to a closed high-pressure air field circulation system for 3D printing equipment. Background Technology

[0002] In 3D metal powder printing, a stable airflow above the printing area is crucial for ensuring normal printing. Current technologies rely on increasing the fan speed of the circulating filtration system to remove smoke and dust. Most current printing systems are equipped with fans to achieve gas flow and filter smoke. However, as equipment size increases, it becomes difficult to create a stable flow field over a large area. Furthermore, the increased fan power and larger pipe diameters make pipe layout more challenging, resulting in a bulky and unwieldy device. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems. This application proposes a closed high-pressure airflow circulation system for 3D printing equipment. The sealed chamber forms an airflow through high-pressure airflow injected by an air knife, which circulates within the sealed chamber to form a uniform flow field.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a closed high-pressure airflow circulation system for 3D printing equipment, comprising a sealed chamber, a compressed air pump, a high-pressure air tank, and an external air source. The sealed chamber is equipped with a filter assembly, and a pressure sensor is installed on the side wall of the sealed chamber. The sealed chamber is divided into a low-pressure zone and a high-pressure zone. The filter assembly is located in the low-pressure zone. The low-pressure airflow in the low-pressure zone is filtered by the filter assembly and then connected to the compressed air pump through a pipeline. The compressed air pump is connected to the high-pressure air tank through a pipeline, and the high-pressure air tank is connected to the air knife in the chamber through a pipeline.

[0005] Furthermore, valves for controlling airflow are installed on the connecting pipes between the compressed air pump and the high-pressure air tank, and on the connecting pipes between the high-pressure air tank and the air knife.

[0006] Furthermore, the external gas source is an inert gas, which is transported to the sealed chamber via a high-pressure gas storage tank to maintain the pressure balance within the sealed chamber.

[0007] Furthermore, the pressure in the high-pressure zone is greater than 0.5 MPa.

[0008] Preferred: The filter assembly is used to filter dust generated during the operation of the 3D printing equipment.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0010] This invention relates to a sealed chamber where a compressed air pump converts the airflow filtered by a filter assembly in a low-pressure area into a high-pressure airflow, which is then transported through a pipeline to a high-pressure gas storage tank. The pressure in the high-pressure gas storage tank is greater than 0.5 MPa. The high-pressure airflow is then delivered to the sealed chamber through the pipeline and sprayed by an air knife component to create an airflow field, allowing it to circulate within the sealed chamber and form a uniform flow field. To maintain pressure balance within the chamber, an external gas source is provided, which can supply inert gases such as helium and argon to the sealed chamber via the high-pressure gas storage tank. A pressure sensor monitors the air pressure within the sealed chamber and maintains it in a slightly positive pressure state. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions in the embodiments of this utility model or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A frame diagram illustrating the overall structure of this utility model;

[0013] In the diagram: 1-Sealed chamber, 2-Pressure sensor, 3-Filter assembly, 4-Compressed air pump, 5-High-pressure air tank, 6-External air source, 7-Air knife, 8-Valve. Detailed Implementation

[0014] To enable those skilled in the art to better understand and implement the technical solution of this utility model, the present utility model will be further described below with reference to specific embodiments. However, the embodiments described are only for illustration and are not intended to limit the present utility model.

[0015] like Figure 1 The diagram illustrates a closed-loop high-pressure airflow circulation system for 3D printing equipment, comprising a sealed chamber 1, a compressed air pump 4, a pressure sensor 2, etc. The sealed chamber 1 is divided into a high-pressure zone and a low-pressure zone. The low-pressure zone is equipped with a filter assembly 3, which is connected to the compressed air 4 via a pipe. The high-pressure zone is equipped with an air knife 7. The filter assembly 3 is connected to the compressed air pump 4 via a pipe. The compressed air pump 4 is connected to a high-pressure air storage tank 5 via a pipe. The filter assembly 3 delivers the filtered gas to the compressed air pump 4, which converts the low-pressure airflow into a high-pressure airflow before delivering it to the high-pressure air storage tank 5. The high-pressure air storage tank 5 is connected to the air knife 7 in the high-pressure zone via a pipe. The airflow is formed by the high-pressure airflow being sprayed through the shaping components of the air knife 7.

[0016] A pressure sensor 2 is installed on the side wall of the sealed chamber 1 to monitor the air pressure inside the sealed chamber 1 and keep it in a slightly positive pressure state.

[0017] In order to maintain the pressure balance inside the sealed chamber 1, an external gas source 6 is provided. The external gas source 6 is an inert gas such as helium or argon, which is transported to the sealed chamber 1 through a high-pressure gas storage tank 5.

[0018] The pressure in the high-pressure zone is greater than 0.5 MPa.

[0019] The filter component 3 is used to filter the smoke and dust generated during the operation of the 3D printing equipment.

[0020] This invention employs a sealed chamber. A compressed air pump converts the low-pressure airflow filtered by the filter assembly in the low-pressure area into a high-pressure airflow, which is then transported to a high-pressure air tank. The high-pressure air tank then transports the high-pressure airflow into the sealed chamber via a pipeline. The airflow field is formed by the high-pressure airflow being sprayed through the air knife shaping component, which can form a circulation within the sealed chamber and create a uniform flow field.

[0021] All content not described in detail in this utility model is prior art.

[0022] The above description is merely a preferred embodiment of this utility model and is not limited to the description in the specification and embodiments. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the claims of this utility model should be included within the scope of this utility model patent application.

Claims

1. A closed high-pressure air circulation system for 3D printing equipment, comprising a sealed chamber (1), a compressed air pump (4), a high-pressure air storage tank (5), and an external air source (6), characterized in that: The sealed chamber (1) is equipped with a filter assembly (3), and a pressure sensor (2) is provided on the side wall of the sealed chamber (1). The sealed chamber (1) is equipped with a low-pressure zone and a high-pressure zone. The filter assembly (3) is located in the low-pressure zone. The low-pressure airflow in the low-pressure zone is filtered by the filter assembly (3) and then connected to the compressed air pump (4) through a pipeline. The compressed air pump (4) is connected to the high-pressure air tank (5) through a pipeline. The high-pressure air tank (5) is connected to the air knife (7) set in the high-pressure zone of the sealed chamber (1) through a pipeline.

2. The closed-loop high-pressure airflow circulation system for 3D printing equipment according to claim 1, characterized in that: Valves (8) for controlling airflow are provided on the connecting pipe between the compressed air pump (4) and the high-pressure air tank (5), and on the connecting pipe between the high-pressure air tank (5) and the air knife (7).

3. The closed-loop high-pressure airflow circulation system for 3D printing equipment according to claim 1, characterized in that: The external gas source (6) is an inert gas, which is transported to the sealed chamber (1) through the high-pressure gas storage tank (5) to maintain the pressure balance in the sealed chamber (1).

4. The closed-loop high-pressure airflow circulation system for 3D printing equipment according to claim 1, characterized in that: The pressure in the high-pressure zone is greater than 0.5 MPa.

5. A closed-loop high-pressure airflow circulation system for 3D printing equipment according to claim 1, characterized in that: The filter assembly (3) is used to filter the smoke and dust generated during the operation of the 3D printing equipment.

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