CN210706096U

CN210706096U - 3D printer sand material recovery unit

Info

Publication number: CN210706096U
Application number: CN201921442422.9U
Authority: CN
Inventors: 韩聪; 李亦农; 袁纯国; 黄慧宇
Original assignee: Foshan Hanyu Technology Co ltd
Current assignee: Foshan Hanyu Technology Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-09
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a 3D printer sand recovery unit, including hopper and negative pressure sand suction device, the hopper bottom is equipped with the discharge gate, the discharge gate passes through the conveyer pipe with the entry of negative pressure sand suction device and communicates, it has tee pipe fittings to establish ties on the conveyer pipe, two of them interfaces of tee pipe fittings communicate with the discharge gate, entry of negative pressure sand suction device respectively, another interface of tee pipe fittings is called first interface, the outside of first interface is equipped with the sealed end cap; the side of the sealing plug is provided with a linear driver, and the movable end of the linear driver is connected with the sealing plug. After the negative pressure sand suction device operates for a period of time, starting the linear driver and moving the sealing plug away from the first interface; the negative pressure sand suction device can directly suck air, and the air flow rate in the conveying pipe is very high due to the fact that sand is not sucked, resistance is small, sand attached to the inner wall of the conveying pipe can be washed away, the sand is separated from the inner wall of the conveying pipe, and therefore the sand cannot be solidified in the conveying pipe.

Description

3D printer sand material recovery unit

Technical Field

The utility model relates to a 3D printing apparatus's technical field, in particular to 3D printer sand material recovery unit.

Background

Sand mould 3D printer is printing the in-process, and some sand material can be stirred to the hopper from printing the mesa at the smooth in-process, and these sand materials can recycle. The existing recovery device extracts sand materials through negative pressure and conveys the sand materials. However, since the sand used for 3D printing is mixed with the curing agent, the sand is easily attached to the inner wall of the pipe while being transported in the transport pipe, and then is cured to block the transport pipe. Thus, the prior art still has disadvantages.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the utility model provides a 3D printer sand material recovery unit, its conveyer pipe is difficult for blockking up.

The utility model provides a solution of its technical problem is:

A3D printer sand recovery device comprises a hopper and a negative pressure sand suction device, wherein a discharge port is formed in the bottom of the hopper, the discharge port is communicated with an inlet of the negative pressure sand suction device through a conveying pipe, a tee pipe fitting is connected in series on the conveying pipe, two interfaces of the tee pipe fitting are respectively communicated with the discharge port and the inlet of the negative pressure sand suction device, the other interface of the tee pipe fitting is called a first interface, a sealing plug is arranged on the outer side of the first interface, the sealing plug covers the first interface, and the sealing plug is abutted to the first interface; the side of the sealing plug is provided with a linear driver, the fixed end of the linear driver is fixedly connected with the conveying pipe, and the movable end of the linear driver is connected with the sealing plug.

As a further improvement of the technical scheme, the linear driver is an air cylinder, and the movable end of the air cylinder is fixedly connected with the sealing plug.

As a further improvement of the technical scheme, the three-way pipe fitting is arranged at one end, close to the discharge port, of the conveying pipe, the conveying pipe is further connected with a connecting pipe in series, the connecting pipe is arranged beside the three-way pipe fitting, and the connecting pipe is detachably connected with the conveying pipe.

As a further improvement of the technical scheme, the inner diameter of the connecting pipe is larger than the outer diameter of the conveying pipe, two ends of the connecting pipe are sleeved outside the conveying pipe, and the connecting pipe is connected with the conveying pipe in a sliding mode.

As a further improvement of the technical scheme, two ends of the connecting pipe are respectively and fixedly provided with a sealing ring, the sealing rings are coaxial with the connecting pipe, the inner sides of the sealing rings are tightly attached to the conveying pipe, and the sealing rings are made of elastic materials.

As a further improvement of the above technical solution, the negative pressure sand suction device includes a collection box having a collection chamber, the collection chamber has an upper chamber portion, a middle chamber portion located at a lower side of the upper chamber portion, and a lower chamber portion located at a lower side of the middle chamber portion, the upper chamber portion is provided with an air outlet, the middle chamber portion is provided with a sand inlet, the sand inlet is an inlet of the negative pressure sand suction device, a negative pressure generator is connected to an outer side of the air outlet, and a filter is provided between the upper chamber portion and the middle chamber portion.

As a further improvement of the above technical solution, the negative pressure generator is a vacuum pump.

As a further improvement of the above technical solution, the filter is a mesh filter.

The utility model has the advantages that: when the sand material recovery device of the 3D printer is used, the negative pressure sand suction device is started to recover sand materials in a hopper; by arranging the sealing plug and the linear driver, after the negative pressure sand suction device runs for a period of time, the linear driver can be started to move the sealing plug away from the first interface, so that the conveying pipe is communicated with the external atmosphere; the negative pressure sand suction device directly sucks air, and the air flow rate in the conveying pipe is very high due to the fact that sand is not sucked, resistance is small, and sand attached to the inner wall of the conveying pipe can be washed away, so that the sand is separated from the inner wall of the conveying pipe and moves into the negative pressure sand suction device, the sand cannot be solidified in the conveying pipe, and the conveying pipe is not easy to block; after the flushing is carried out for a period of time, the first connector is plugged, and the sand material in the hopper is continuously recovered.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is a front view of the structure of the embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a collecting box according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a connecting pipe according to an embodiment of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The utility model provides an each technical feature can the interactive combination under the prerequisite of conflict each other.

With reference to fig. 1 to 3, this is an embodiment of the invention, in particular:

a sand recovery device of a 3D printer comprises a hopper 11 and a negative pressure sand suction device, wherein a discharge port 12 is arranged at the bottom of the hopper 11, the discharge port 12 is communicated with an inlet of the negative pressure sand suction device through a conveying pipe 10, a three-way pipe is connected in series on the conveying pipe 10, two interfaces of the three-way pipe are respectively communicated with the discharge port 12 and the inlet of the negative pressure sand suction device, the other interface of the three-way pipe is called a first interface, a sealing plug 15 is arranged on the outer side of the first interface, the sealing plug 15 covers the first interface, and the sealing plug 15 is abutted to the first interface; the side of the sealing plug 15 is provided with a linear driver, the fixed end of the linear driver is fixedly connected with the conveying pipe 10, and the movable end of the linear driver is connected with the sealing plug 15. When the sand suction device is used, the negative pressure sand suction device is started, sand materials in the hopper 11 move into the negative pressure sand suction device from the conveying pipe 10 under the action of negative pressure, and the sand materials in the hopper 11 are recovered; by arranging the sealing plug 15 and the linear driver, after the negative pressure sand suction device runs for a period of time, the linear driver can be started to move the sealing plug 15 away from the first interface, so that the conveying pipe 10 is communicated with the external atmosphere; the negative pressure sand suction device can directly suck air, and because sand is not sucked and the resistance is small, the air flow velocity in the conveying pipe 10 between the three-way pipe fitting and the negative pressure sand suction device is very high, the sand attached to the inner wall of the conveying pipe 10 can be washed away, so that the sand is separated from the inner wall of the conveying pipe 10 and moves into the negative pressure sand suction device, the sand cannot be solidified in the conveying pipe 10, and the conveying pipe 10 is not easy to be blocked; after the flushing for a period of time, the first connector is plugged, and the sand in the hopper 11 is recovered continuously.

In a further preferred embodiment, the linear actuator is an air cylinder 16, and the movable end of the air cylinder 16 is fixedly connected with the sealing plug 15. The cylinder 16 operates quickly and stably, and the cylinder 16 has a strong environmental adaptability and can prevent a failure caused by splashing of sand.

Further as a preferred embodiment, the three-way pipe fitting is arranged at one end of the conveying pipe 10 close to the discharge port 12, a connecting pipe 13 is further connected in series on the conveying pipe 10, the connecting pipe 13 is arranged at the side of the three-way pipe fitting, and the connecting pipe 13 is detachably connected with the conveying pipe 10. After the first connector is opened, the inner wall of the conveying pipe 10 between the three-way pipe fitting and the negative pressure sand suction device can be washed, and the three-way pipe fitting is arranged at one end of the conveying pipe 10 close to the discharge hole 12, so that most of pipelines can be washed; the connecting pipe 13 can be detached by arranging the connecting pipe 13 to be detachably connected with the conveying pipe 10, and then a tool such as a thin rod is used for extending into the conveying pipe 10 between the three-way pipe fitting and the discharge hole 12 to clean the section of pipe; in this embodiment, the connecting pipe 13 is disposed between the tee pipe and the negative pressure sand suction device, and may be disposed between the tee pipe and the discharge port 12.

In a further preferred embodiment, the inner diameter of the connecting pipe 13 is larger than the outer diameter of the conveying pipe 10, both ends of the connecting pipe 13 are sleeved outside the conveying pipe 10, and the connecting pipe 13 is slidably connected with the conveying pipe 10. In this embodiment, the connecting pipe 13 is transversely disposed, so that the connecting pipe 13 is moved leftward until the right end of the connecting pipe 13 is separated from the conveying pipe 10, the right end of the connecting pipe 13 is moved away from the axial direction of the connecting pipe 13, and then the connecting pipe 13 is moved rightward, so that the connecting pipe 13 can be detached.

In a further preferred embodiment, two ends of the connecting pipe 13 are respectively and fixedly provided with a sealing ring 14, the sealing rings 14 are coaxial with the connecting pipe 13, the inner side of each sealing ring 14 is tightly attached to the conveying pipe 10, and each sealing ring 14 is made of an elastic material. Therefore, air can be prevented from entering the conveying pipe 10 through a gap between the connecting pipe 13 and the conveying pipe 10, and the negative pressure sand suction efficiency is improved.

Further, as a preferred embodiment, the negative pressure sand suction device comprises a collection box 02, the collection box 02 is provided with a collection cavity, the collection cavity is provided with an upper cavity part 05, a middle cavity part 04 positioned on the lower side of the upper cavity part 05 and a lower cavity part 03 positioned on the lower side of the middle cavity part 04, the upper cavity part 05 is provided with an air outlet, the middle cavity part 04 is provided with a sand inlet 07, the sand inlet 07 is an inlet of the negative pressure sand suction device, a negative pressure generator is connected to the outer side of the air outlet, and a filter is arranged between the upper cavity part 05 and the middle cavity part 04. After the negative pressure generator is started, the collecting cavity becomes a negative pressure space, sand in the hopper 11 can be conveyed into the middle cavity part 04 and then falls into the lower cavity part 03, and the sand can be prevented from entering the negative pressure generator to damage the negative pressure generator by arranging the filter.

Further in a preferred embodiment, the negative pressure generator is a vacuum pump 01. Because the sand material has certain quality, choose to bleed the stronger vacuum pump 01 of ability and enable the recovery unit operating efficiency of this embodiment high.

Further in a preferred embodiment, the filter is a mesh filter 06. The filter is sand to be filtered, and the purpose can be achieved by using the screen filter 06 with simple structure and lower cost.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims

1. The utility model provides a 3D printer sand material recovery unit which characterized in that: the device comprises a hopper and a negative pressure sand suction device, wherein a discharge port is arranged at the bottom of the hopper and is communicated with an inlet of the negative pressure sand suction device through a conveying pipe, a three-way pipe is connected in series on the conveying pipe, two interfaces of the three-way pipe are respectively communicated with the discharge port and the inlet of the negative pressure sand suction device, the other interface of the three-way pipe is called a first interface, a sealing plug is arranged on the outer side of the first interface, covers the first interface, and is abutted against the first interface; the side of the sealing plug is provided with a linear driver, the fixed end of the linear driver is fixedly connected with the conveying pipe, and the movable end of the linear driver is connected with the sealing plug.

2. The 3D printer sand recovery device of claim 1, characterized in that: the linear driver is a cylinder, and the movable end of the cylinder is fixedly connected with the sealing plug.

3. The 3D printer sand recovery device of claim 1, characterized in that: the tee bend pipe fitting is located the conveyer pipe is close to the one end of discharge gate, still establish ties the connecting pipe on the conveyer pipe, the side of tee bend pipe fitting is located to the connecting pipe, connecting pipe and conveyer pipe detachable connection.

4. The 3D printer sand recovery device of claim 3, characterized in that: the internal diameter of connecting pipe is greater than the external diameter of conveyer pipe, the both ends of connecting pipe all overlap in the conveyer pipe outside, connecting pipe and conveyer pipe sliding connection.

5. The 3D printer sand recovery device of claim 4, characterized in that: and sealing rings are fixedly arranged at two ends of the connecting pipe respectively, the sealing rings are coaxial with the connecting pipe, the inner sides of the sealing rings are tightly attached to the conveying pipe, and the sealing rings are made of elastic materials.

6. The 3D printer sand recovery device of claim 1, characterized in that: the negative pressure sand suction device comprises a collecting box, the collecting box is provided with a collecting cavity, the collecting cavity is provided with an upper cavity part, a middle cavity part positioned on the lower side of the upper cavity part and a lower cavity part positioned on the lower side of the middle cavity part, the upper cavity part is provided with an air outlet, the middle cavity part is provided with a sand inlet, the sand inlet is an inlet of the negative pressure sand suction device, the outer side of the air outlet is connected with a negative pressure generator, and a filter is arranged between the upper cavity part and the middle cavity part.

7. The 3D printer sand recovery device of claim 6, characterized in that: the negative pressure generator is a vacuum pump.

8. The 3D printer sand recovery device of claim 6, characterized in that: the filter is a mesh filter.