Dehumidification device for gas drying and 3D printer

Abstract

The invention relates to the technical field of dehumidification devices, in particular to a dehumidification device for gas drying and a 3D printer, the dehumidification device for gas drying comprises a mounting plate, a circulating water tank, a water pump, a refrigerator and a condensation pipe, and the circulating water tank, the water pump and the refrigerator are fixedly arranged on the mounting plate; the condenser pipe comprises an inner pipe body and an outer pipe body, the end of the inner pipe body and the end of the outer pipe body are connected in a sealed mode, the space between the inner pipe body and the outer pipe body is a cooling cavity, and a cooling water inlet and a cooling water outlet which are communicated with the cooling cavity are formed in the peripheral side wall of the outer pipe body. Two ends of the inner pipe body are respectively communicated with an air inlet pipe and an air outlet pipe; a water outlet of the circulating water tank is connected with a water inlet of the water pump through a first pipeline; a water outlet of the water pump is connected with a water inlet of the refrigerator through a second pipeline; a water outlet of the refrigerator is connected with the cooling water inlet through a third pipeline, and the cooling water outlet is connected with a water inlet of the circulating water tank through a fourth pipeline. The metal part forming device has the effects of reducing the humidity of air in the forming chamber and improving the forming quality of metal parts.

Description

Technical Field

[0001] The present application relates to the technical field of dehumidification devices, and in particular to a dehumidification device and a 3D printer for gas drying. Background Art

[0002] A 3D metal printer is a scientific instrument used in the fields of physics, basic sciences of engineering and technology, and mechanical engineering. It uses laser melting technology to melt metal powder to form functional solid parts. It can be used to print high-throughput metal materials. It is a fully digital rapid prototyping manufacturing process that directly produces full high-density metal parts based on the interface data of the three-dimensional CAD layer. The thickness of the melted metal layer ranges from 20 microns to 100 microns. When manufacturing parts through metal rapid prototyping, a 3D printer needs to first lay the metal powder in the molding cylinder, and use a scraper to evenly distribute the metal powder layer. Then, the air environment in the molding chamber is strictly controlled, and each metal layer is melted separately in the molding chamber to finally obtain a solid part. However, the air in the molding chamber will contain moisture. If the humidity is high, it cannot meet the strict air conditions in the molding chamber, affecting the molding quality of metal parts. Summary of the invention

[0003] In order to reduce the humidity of the air in the molding chamber and improve the molding quality of metal parts, the present application provides a dehumidification device for gas drying and a 3D printer.

[0004] In a first aspect, the present application provides a dehumidification device for gas drying, which adopts the following technical solution: A dehumidification device for gas drying comprises a mounting plate, a circulating water tank, a water pump, a refrigerator and a condenser pipe, wherein the circulating water tank, the water pump and the refrigerator are fixedly arranged on the mounting plate; The condenser tube comprises an inner tube body and an outer tube body, the ends of the inner tube body and the outer tube body are sealed and connected to each other, the space between the inner tube body and the outer tube body is a cooling chamber, and the peripheral side wall of the outer tube body is provided with a cooling water inlet and a cooling water outlet connected to the cooling chamber; the two ends of the inner tube body are respectively connected to an air inlet pipe and an air outlet pipe; The water outlet of the circulating water tank is connected to the water inlet of the water pump through a first pipe, and the water outlet of the water pump is connected to the water inlet of the refrigerator through a second pipe; the water outlet of the refrigerator is connected to the cooling water inlet through a third pipe, and the cooling water outlet is connected to the water inlet of the circulating water tank through a fourth pipe.

[0005] By adopting the above technical solution, when the device of the present application is used, the air inlet pipe and the air outlet pipe are connected to the molding chamber, and an air pump can be set according to actual conditions to extract the air in the molding chamber through the air outlet pipe. Start the water pump, the water pump pumps the water in the circulating water tank into the refrigerator for cooling, and then inputs it into the cooling chamber. The circulating cooling water fills the cooling chamber, thereby condensing the air in the inner tube body, and the moisture in the air condenses into liquid and remains in the inner tube body, realizing air dehumidification. The dry air enters the molding chamber through the air inlet pipe, which has the effect of reducing the humidity of the air in the molding chamber and improving the molding quality of metal parts.

[0006] Optionally, the condenser is arranged horizontally, and the inner tube body includes a plurality of unit bulbs connected in sequence, the bottom of the unit bulbs is connected to a condensate outlet pipe, and one end of the condensate outlet pipe away from the unit bulbs passes through the peripheral side wall of the outer tube body.

[0007] By adopting the above technical solution, the inner tube body includes a plurality of unit bulbs connected in sequence, which, on the one hand, helps to increase the cooling area and improve the condensation efficiency; on the other hand, it enables the condensed water to accumulate at the bottom of each unit bulb and then be discharged from the condensed water outlet pipe, thereby facilitating the continuous use of the condenser.

[0008] Optionally, it also includes a water storage tank, and a water receiving box is fixedly connected to the bottom of the peripheral side wall of the outer tube body, and one end of the condensed water outlet pipe passes through the peripheral side wall of the outer tube body and is connected to the water receiving box, and the bottom of the water receiving box is connected to a first drain pipe, and the bottom wall of the water receiving box is inclined toward the first drain pipe, and the lowest end of the bottom wall of the water receiving box is located at the first drain pipe; a switch valve is provided on the first drain pipe, and the end of the first drain pipe away from the water receiving box is connected to the water storage tank.

[0009] By adopting the above technical solution, the condensed water discharged from the condensed water outlet pipe can be concentrated into the water receiving box, and then discharged into the water storage tank from the first drain pipe. The structure is simple and convenient for centralized treatment of the condensed water.

[0010] Optionally, a plurality of separation ring plates are provided in the cooling chamber, and the separation ring plates are correspondingly arranged at the connection between two adjacent unit tubes, the outer peripheral side walls of the separation ring plates are sealedly connected to the inner wall of the outer tube body, and the inner peripheral side walls of the separation ring plates are sealedly connected to the outer wall of the inner tube body; the separation ring plates divide the cooling chamber into a plurality of unit chambers, and the separation ring plates are provided with flow grooves, and the flow grooves connect two adjacent unit chambers.

[0011] By adopting the above technical solution, on the one hand, the separation ring plate can increase the heat exchange area and accelerate condensation; on the other hand, it can increase the residence time of cooling water in each unit chamber and enhance the condensation effect.

[0012] Optionally, the flow grooves on two adjacent separation ring plates are respectively located at the top and bottom ends of the cooling chamber.

[0013] By adopting the above technical solution, it is helpful to increase the flow path of cooling water in the cooling chamber and further enhance the condensation effect.

[0014] Optionally, a water retaining side plate is fixedly connected to the peripheral side of the mounting plate, a second drain pipe is connected to the bottom wall of the mounting plate, and one end of the second drain pipe away from the mounting plate is connected to the water tank.

[0015] By adopting the above technical solution, the water flowing down from the circulating water tank and the refrigerator can be blocked by the water retaining side plate on the inner side of the mounting plate, and then discharged into the water storage tank through the second drain pipe for centralized treatment, which helps to improve the dryness and cleanliness of the on-site environment.

[0016] In a second aspect, the present application provides a 3D printer, which adopts the following technical solution: A 3D printer comprises the above-mentioned dehumidification device for gas drying.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. Start the water pump, which pumps the water in the circulating water tank into the refrigerator for cooling, and then inputs it into the cooling chamber. The circulating cooling water fills the cooling chamber, thereby condensing the air in the inner tube body. The moisture in the air condenses into liquid and remains in the inner tube body, achieving air dehumidification. The dry air enters the molding chamber through the air inlet pipe, which has the effect of reducing the humidity of the air in the molding chamber and improving the molding quality of metal parts; 2. The inner tube body includes a plurality of unit bulbs connected in sequence, which, on the one hand, helps to increase the cooling area and improve the condensation efficiency; on the other hand, it enables the condensed water to accumulate at the bottom of each unit bulb and then be discharged from the condensed water outlet pipe, which facilitates the continuous use of the condenser tube; 3. The setting of the separation ring plate can increase the heat exchange area and accelerate condensation on the one hand; on the other hand, it can increase the residence time of cooling water in each unit chamber and enhance the condensation effect; and the flow grooves on the two adjacent separation ring plates are respectively located at the top and bottom ends of the cooling chamber, which helps to increase the flow path of cooling water in the cooling chamber and further enhance the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a dehumidification device for gas drying and a 3D printer according to an embodiment of the present application.

[0019] Figure 2 It is a structural schematic diagram used to show the bottom of the condenser in the embodiment of the present application.

[0020] Figure 3It is a schematic diagram showing the structure of the interior of the condenser according to an embodiment of the present application.

[0021] Figure 4 It is a schematic diagram of the structure of the interior of the condenser tube shown from another angle according to an embodiment of the present application.

[0022] Explanation of the reference numerals: 1. mounting plate; 11. first pipe; 12. second pipe; 13. third pipe; 14. fourth pipe; 15. water retaining side plate; 2. circulating water tank; 3. water pump; 4. refrigerator; 5. condenser; 51. inner pipe body; 511. air inlet pipe; 512. air outlet pipe; 52. outer pipe body; 521. cooling water inlet; 522. cooling water outlet; 523. water receiving box; 6. cooling chamber; 61. partition ring plate; 611. flow groove; 62. unit chamber; 7. unit bulb; 8. condensate outlet pipe; 9. water storage tank; 91. first drain pipe; 911. switch valve; 92. second drain pipe. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 This application is described in further detail.

[0024] The embodiments of the present application disclose a dehumidification device and a 3D printer for gas drying.

[0025] In a first aspect, the present application discloses a dehumidification device for gas drying, which adopts the following technical solution: Reference Figure 1-2 A dehumidification device for gas drying comprises a mounting plate 1, a circulating water tank 2, a water pump 3, a refrigerator 4 and a condenser 5, wherein the circulating water tank 2, the water pump 3 and the refrigerator 4 are fixedly arranged on the mounting plate 1. The condenser 5 comprises an inner tube body 51 and an outer tube body 52, the ends of the inner tube body 51 and the outer tube body 52 are sealed and connected to each other, the space between the inner tube body 51 and the outer tube body 52 is a cooling chamber 6, and a cooling water inlet 521 and a cooling water outlet 522 communicating with the cooling chamber 6 are arranged on the peripheral side wall of the outer tube body 52; the two ends of the inner tube body 51 are respectively connected with an air inlet pipe 511 and an air outlet pipe 512. The water outlet of the circulating water tank 2 is connected to the water inlet of the water pump 3 through the first pipe 11, and the water outlet of the water pump 3 is connected to the water inlet of the refrigerator 4 through the second pipe 12; the water outlet of the refrigerator 4 is connected to the cooling water inlet 521 through the third pipe 13, and the cooling water outlet 522 is connected to the water inlet of the circulating water tank 2 through the fourth pipe 14.

[0026] When the device of the present application is used, the air inlet pipe 511 and the air outlet pipe 512 are connected to the molding chamber, and an air pump can be set according to actual conditions to extract the air in the molding chamber through the air outlet pipe 512. The water pump 3 is started, and the water pump 3 draws the water in the circulating water tank 2 into the refrigerator 4 for cooling, and then inputs it into the cooling chamber 6. The circulating cooling water fills the cooling chamber 6, thereby condensing the air in the inner tube body 51. The moisture in the air is condensed into liquid and remains in the inner tube body 51, realizing air dehumidification. The dry air enters the molding chamber through the air inlet pipe 511, which has the effect of reducing the humidity of the air in the molding chamber and improving the molding quality of metal parts.

[0027] Reference Figure 3-4 The condenser 5 is arranged horizontally, and the condenser 5 is formed by 3D printing during processing and manufacturing. The inner tube body 51 includes a plurality of unit bulbs 7 connected in sequence, and the bottom of the unit bulb 7 is connected to a condensate outlet pipe 8, and the end of the condensate outlet pipe 8 away from the unit bulb 7 passes through the peripheral side wall of the outer tube body 52. ​​The inner tube body 51 includes a plurality of unit bulbs 7 connected in sequence, which, on the one hand, helps to increase the cooling area and improve the condensation efficiency; on the other hand, it can make the condensate accumulate at the bottom of each unit bulb 7, and then be discharged from the condensate outlet pipe 8, which is convenient for the continuous use of the condenser 5.

[0028] Reference Figure 1-3 , further comprising a water storage tank 9, a water receiving box 523 is fixedly connected to the bottom of the peripheral side wall of the outer tube body 52, one end of the condensed water outlet pipe 8 passes through the peripheral side wall of the outer tube body 52 and is connected to the water receiving box 523, the bottom of the water receiving box 523 is connected to the first drain pipe 91, the bottom wall in the water receiving box 523 is inclined toward the first drain pipe 91, and the lowest end of the bottom wall in the water receiving box 523 is located at the first drain pipe 91, a switch valve 911 is provided on the first drain pipe 91, and one end of the first drain pipe 91 away from the water receiving box 523 is connected to the water storage tank 9. The condensed water discharged from the condensed water outlet pipe 8 can be concentrated into the water receiving box 523, and then discharged from the first drain pipe 91 into the water storage tank 9, the structure is simple, and it is convenient to centrally process the condensed water.

[0029] Reference Figure 3-4, a plurality of partition ring plates 61 are arranged in the cooling chamber 6, and the partition ring plates 61 are arranged at the connection of two adjacent unit tubes 7, and the outer peripheral side wall of the partition ring plate 61 is sealed and connected to the inner wall of the outer tube body 52, and the inner peripheral side wall of the partition ring plate 61 is sealed and connected to the outer wall of the inner tube body 51; the partition ring plate 61 divides the cooling chamber 6 into a plurality of unit chambers 62, and a piece is cut out of the end of the partition ring plate 61 to form a flow groove 611, and the flow groove 611 connects two adjacent unit chambers 62, and the flow grooves 611 on the adjacent partition ring plates 61 are respectively located outside the top and bottom ends of the inner tube body 51. On the one hand, the partition ring plate 61 can increase the heat exchange area and accelerate condensation; on the other hand, it can increase the residence time of cooling water in each unit chamber 62 and enhance the condensation effect. The flow grooves 611 on the two adjacent partition ring plates 61 are respectively located at the top and bottom ends of the cooling chamber 6, which helps to increase the flow path of cooling water in the cooling chamber 6 and further enhance the condensation effect.

[0030] Reference Figure 1 The surrounding side of the mounting plate 1 is fixedly connected with a water retaining side plate 15, and the bottom wall of the mounting plate 1 is connected with a second drain pipe 92, and one end of the second drain pipe 92 away from the mounting plate 1 is connected with the water storage tank 9. The water flowing down from the circulating water tank 2 and the refrigerator 4 can be blocked by the water retaining side plate 15 on the inner side of the mounting plate 1, and then discharged into the water storage tank 9 through the second drain pipe 92 for centralized treatment, which helps to improve the dryness and cleanliness of the on-site environment.

[0031] The implementation principle of a dehumidification device for gas drying in the embodiment of the present application is as follows: when the device of the present application is used, the air inlet pipe 511 and the air outlet pipe 512 are connected to the molding chamber, and an air pump can be set according to actual conditions to extract the air in the molding chamber through the air outlet pipe 512. Start the water pump 3, the water pump 3 pumps the water in the circulating water tank 2 into the refrigerator 4 for cooling, and then inputs it into the cooling chamber 6. The circulating cooling water fills the cooling chamber 6, thereby condensing the air in the inner tube body 51, and the moisture in the air condenses into liquid and remains in the inner tube body 51, realizing air dehumidification, and the dry air enters the molding chamber through the air inlet pipe 511, which has the effect of reducing the humidity of the air in the molding chamber and improving the molding quality of metal parts. The condensed water in the inner tube body 51 enters the water storage tank 9 through the first drain pipe 91 for centralized treatment.

[0032] In a second aspect, the present application discloses a 3D printer, which adopts the following technical solution: A 3D printer comprises the above-mentioned dehumidification device for gas drying.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dehumidification device for gas drying, characterized in that: It comprises a mounting plate (1), a circulating water tank (2), a water pump (3), a refrigerator (4) and a condenser (5), wherein the circulating water tank (2), the water pump (3) and the refrigerator (4) are fixedly arranged on the mounting plate (1); The condenser (5) comprises an inner tube body (51) and an outer tube body (52); the ends of the inner tube body (51) and the ends of the outer tube body (52) are sealed and connected to each other; the space between the inner tube body (51) and the outer tube body (52) is a cooling chamber (6); a cooling water inlet (521) and a cooling water outlet (522) which are in communication with the cooling chamber (6) are provided on the peripheral side wall of the outer tube body (52); the two ends of the inner tube body (51) are respectively connected to an air inlet pipe (511) and an air outlet pipe (512); The water outlet of the circulating water tank (2) is connected to the water inlet of the water pump (3) through a first pipe (11), and the water outlet of the water pump (3) is connected to the water inlet of the refrigerator (4) through a second pipe (12); the water outlet of the refrigerator (4) is connected to the cooling water inlet (521) through a third pipe (13), and the cooling water outlet (522) is connected to the water inlet of the circulating water tank (2) through a fourth pipe (14).

2. A dehumidification device for gas drying according to claim 1, characterized in that: The condenser (5) is arranged horizontally, and the inner tube body (51) includes a plurality of unit bulbs (7) connected in sequence, and the bottom of the unit bulbs (7) is connected to a condensate outlet pipe (8), and the end of the condensate outlet pipe (8) away from the unit bulbs (7) passes through the peripheral side wall of the outer tube body (52).

3. A dehumidification device for gas drying according to claim 2, characterized in that: It also includes a water storage tank (9), a water receiving box (523) is fixedly connected to the bottom of the peripheral side wall of the outer tube body (52), one end of the condensed water outlet pipe (8) passes through the peripheral side wall of the outer tube body (52) and is connected to the water receiving box (523), the bottom of the water receiving box (523) is connected to a first drain pipe (91), the bottom wall of the water receiving box (523) is inclined toward the first drain pipe (91), and the lowest end of the bottom wall of the water receiving box (523) is located at the first drain pipe (91); a switch valve (911) is provided on the first drain pipe (91), and the end of the first drain pipe (91) away from the water receiving box (523) is connected to the water storage tank (9).

4. A dehumidification device for gas drying according to claim 2, characterized in that: A plurality of separation ring plates (61) are arranged in the cooling chamber (6), and the separation ring plates (61) are arranged correspondingly at the connection between two adjacent unit tubes (7). The outer peripheral side wall of the separation ring plate (61) is sealedly connected to the inner wall of the outer tube body (52), and the inner peripheral side wall of the separation ring plate (61) is sealedly connected to the outer wall of the inner tube body (51); the separation ring plate (61) divides the cooling chamber (6) into a plurality of unit chambers (62), and a flow groove (611) is provided on the separation ring plate (61), and the flow groove (611) connects two adjacent unit chambers (62).

5. A dehumidification device for gas drying according to claim 4, characterized in that: The flow grooves (611) on two adjacent separation ring plates (61) are respectively located at the top and bottom ends of the cooling chamber (6).

6. A dehumidification device for gas drying according to claim 1, characterized in that: A water retaining side plate (15) is fixedly connected to the peripheral side of the mounting plate (1), and a second drainage pipe (92) is connected to the bottom wall of the mounting plate (1). The end of the second drainage pipe (92) away from the mounting plate (1) is connected to the water storage tank (9).

7. A 3D printer, characterized in that: It comprises a dehumidification device for gas drying as described in any one of claims 1 to 6.

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