Self-cleaning structure of hollow stirring shaft of concrete 3D printer

Abstract

The utility model relates to the field of concrete 3D printer, disclose a kind of hollow stirring shaft's self-cleaning structure in concrete 3D printer, including U-shaped frame, the bottom of U-shaped frame is equipped with stirring bucket, the bottom of stirring bucket is equipped with conical nozzle, U-shaped frame is rotatably installed with hollow stirring shaft extending into stirring bucket, multiple stirring blades are installed on hollow stirring shaft;The bottom of U-shaped frame is equipped with annular shower pipe, the side of annular shower pipe is equipped with liquid supply pipe extending to the outside of stirring bucket, multiple spray heads for cleaning hollow stirring shaft are installed on annular shower pipe, the inner wall of stirring bucket is equipped with the protection mechanism for the protection of spray head, the protection mechanism includes annular sealing plate.The utility model has the following advantages and effects: realize the automatic cleaning of concrete 3D printer hollow stirring shaft, reduce labor intensity, improve cleaning efficiency, and can effectively protect spray head, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of concrete 3D printer technology, and in particular to a self-cleaning structure for a hollow mixing shaft in a concrete 3D printer. Background Technology

[0002] In the concrete 3D printing process, the mixing device of the concrete 3D printer is a key component. The hollow mixing shaft, in particular, easily accumulates a large amount of concrete residue on its surface during mixing. If not cleaned promptly, this not only affects the subsequent mixing effect but may also damage the mixing shaft due to the hardening of the residue, increasing equipment maintenance costs and downtime. Existing cleaning methods are mostly manual, which is not only labor-intensive and inefficient, but also ineffective, making it difficult to completely remove stubborn residues from the hollow mixing shaft. Therefore, we propose a self-cleaning structure for the hollow mixing shaft of a concrete 3D printer to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a self-cleaning structure for the hollow mixing shaft of a concrete 3D printer, which realizes automatic cleaning of the hollow mixing shaft of the concrete 3D printer, reduces labor intensity, improves cleaning efficiency, and effectively protects the spray head, extending the service life of the equipment.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a self-cleaning structure for a hollow mixing shaft of a concrete 3D printer, comprising a U-shaped frame, a mixing tank installed at the bottom of the U-shaped frame, a conical nozzle at the bottom of the mixing tank, a hollow mixing shaft extending into the mixing tank rotatably mounted on the U-shaped frame, and multiple mixing blades mounted on the hollow mixing shaft; an annular spray pipe installed at the bottom of the U-shaped frame, a liquid supply pipe extending to the outside of the mixing tank installed on one side of the annular spray pipe, multiple spray nozzles for cleaning the hollow mixing shaft installed on the annular spray pipe, and a protective mechanism for protecting the spray nozzles provided on the inner wall of the mixing tank.

[0005] By adopting the above technical solution, automatic cleaning of the hollow mixing shaft of the concrete 3D printer is achieved, reducing labor intensity, improving cleaning efficiency, and effectively protecting the spray head, thus extending the service life of the equipment.

[0006] A further feature of this invention is that the protective mechanism includes an annular sealing plate, and the top of the annular sealing plate has a plurality of through holes with one side open, and the through holes are located below the spray head. By adopting the above technical solution, a channel can be provided for the cleaning liquid sprayed from the sprinkler head, and the sprinkler head can be initially shielded in a non-clean state, reducing direct pollution from concrete residue. A further feature of this invention is that an annular drive plate is rotatably mounted on the inner wall of the annular sealing plate, an annular rotating plate is fixedly mounted on the outer side of the annular drive plate, and the annular rotating plate is rotatably mounted on the bottom of the annular sealing plate. The top of the annular rotating plate is provided with a plurality of through holes II, and the through holes II are adapted to the corresponding through holes I. By adopting the above technical solution, the second through hole can be made to correspond with or be offset from the first through hole by rotating the annular rotating plate, thereby realizing the opening and closing of the cleaning channel and flexibly switching between protection and cleaning states. A further feature of this invention is that a drive motor is installed inside the U-shaped frame, and a drive mechanism is provided between the drive motor and the annular drive plate. The drive mechanism includes a rotating gear, an arc-shaped groove, and a rack. An arc-shaped groove is provided on the outer side of the annular drive plate, and a rack is installed on the inner wall of the arc-shaped groove. A rotating gear is installed on the output shaft of the drive motor, and the rotating gear meshes with the rack. By adopting the above technical solution, the power of the drive motor can be stably transmitted to the ring drive plate, realizing precise rotation control of the ring plate and ensuring the alignment accuracy of through hole one and through hole two. A further feature of this invention is that a T-shaped slide block is installed on the outer side of the annular sealing plate, and a T-shaped slide groove is opened on the outer side of the annular drive plate, and the T-shaped slide block is slidably connected to the corresponding T-shaped slide block. By adopting the above technical solution, the rotation of the ring drive plate can be guided and limited, preventing it from deviating and ensuring the smoothness of the rotation process. A further feature of this invention is that a rotary motor is installed on one side of the U-shaped frame, and a linkage mechanism is provided between the rotary motor and the hollow stirring shaft. The linkage mechanism includes a driving bevel gear and a driven bevel gear. The driving bevel gear is fixedly installed on the output shaft of the rotary motor, and the driven bevel gear is installed on the hollow stirring shaft. The driving bevel gear meshes with the corresponding driven bevel gear. By adopting the above technical solution, the power transmission between the rotary motor and the hollow stirring shaft can be efficiently realized, driving the hollow stirring shaft to rotate stably and meeting the rotation requirements during stirring and cleaning. A further feature of this invention is that a liquid storage tank is provided on one side of the U-shaped frame, and a water pump connected to the liquid supply pipe is installed on the liquid storage tank. By adopting the above technical solution, a stable supply of cleaning fluid can be achieved, providing continuous cleaning power to the spray head and ensuring the cleaning effect on the hollow mixing shaft.

[0007] The beneficial effects of this utility model are: (1) By setting up structures such as annular spray pipe, liquid supply pipe, spray head and liquid storage tank, when cleaning is required, the cleaning liquid in the liquid storage tank can be transported to the annular spray pipe by water pump, and then sprayed out by the spray head to thoroughly clean the hollow stirring shaft. This achieves self-cleaning function, eliminates the need for manual cleaning, reduces labor intensity and improves cleaning efficiency. (2) The protective mechanism is designed so that when mixing concrete, the combination of the annular sealing plate, the annular drive plate, the annular rotating plate and other structures can make the through hole one and the through hole two staggered, which can effectively prevent concrete residue from splashing onto the spray head, thus providing good protection for the spray head, preventing the spray head from being blocked or damaged, and extending the service life of the spray head. (3) When cleaning is required, the ring drive plate is rotated by the drive motor so that the first through hole and the second through hole correspond to each other, ensuring that the cleaning liquid can be sprayed out smoothly without affecting the cleaning effect. The operation is convenient and flexible. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a three-dimensional structural diagram of a self-cleaning structure of a hollow mixing shaft in a concrete 3D printer according to the present invention. Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of a self-cleaning structure of a hollow mixing shaft in a concrete 3D printer according to the present invention. Figure 3 This is a schematic diagram of structure A of a self-cleaning structure for a hollow mixing shaft in a concrete 3D printer according to this utility model. Figure 4 This is a partial three-dimensional structural diagram of a self-cleaning structure of a hollow mixing shaft in a concrete 3D printer according to the present invention. Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure viewed from below.

[0010] In the diagram, 101 is a U-shaped frame; 102 is a mixing tank; 103 is a conical nozzle; 201 is a hollow mixing shaft; 202 is a mixing blade; 301 is a driven bevel gear; 302 is a rotary motor; 303 is a driving bevel gear; 401 is an annular spray pipe; 402 is a spray head; 403 is a liquid supply pipe; 404 is an annular sealing plate; 405 is a through hole one; 501 is an annular drive plate; 502 is an annular rotating plate; 503 is a through hole two; 601 is an arc-shaped groove; 602 is a rack; 603 is a drive motor; and 604 is a rotating gear. Detailed Implementation

[0011] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0012] When a component is described as being "set on" another component, it can be directly on the other component or it can be in an intervening component. "Set on" indicates a mode of existence, which can be a connection, installation, fixed connection, active connection, etc. When a component is described as being "connected" to another component, it can be directly connected to the other component or it may be in an intervening component.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] See Figures 1-5 This utility model provides a self-cleaning structure for a hollow mixing shaft in a concrete 3D printer, including a U-shaped frame 101, a mixing tank 102 installed at the bottom of the U-shaped frame 101, a conical nozzle 103 at the bottom of the mixing tank 102, a hollow mixing shaft 201 extending into the mixing tank 102 rotatably mounted on the U-shaped frame 101, multiple mixing blades 202 mounted on the hollow mixing shaft 201, an annular spray pipe 401 installed at the bottom of the U-shaped frame 101, a liquid supply pipe 403 extending to the outside of the mixing tank 102 installed on one side of the annular spray pipe 401, multiple spray nozzles 402 for cleaning the hollow mixing shaft 201 mounted on the annular spray pipe 401, and a protective mechanism for protecting the spray nozzles 402 on the inner wall of the mixing tank 102.

[0015] Specifically, the protective mechanism includes an annular sealing plate 404, and the top of the annular sealing plate 404 is provided with multiple through holes 405 with one side open, and the through holes 405 are located below the spray head 402.

[0016] Specifically, an annular drive plate 501 is rotatably mounted on the inner wall of the annular sealing plate 404, and an annular rotating plate 502 is fixedly mounted on the outer side of the annular drive plate 501, and the annular rotating plate 502 is rotatably mounted on the bottom of the annular sealing plate 404.

[0017] Specifically, the top of the annular rotating plate 502 is provided with multiple through holes 503, and the through holes 503 are adapted to the corresponding through holes 405.

[0018] Specifically, a drive motor 603 is installed inside the U-shaped frame 101, and a drive mechanism is provided between the drive motor 603 and the annular drive plate 501.

[0019] Specifically, the drive mechanism includes a rotating gear 604, an arc-shaped groove 601, and a rack 602. An arc-shaped groove 601 is provided on the outer side of the annular drive plate 501, and a rack 602 is installed on the inner wall of the arc-shaped groove 601. A rotating gear 604 is installed on the output shaft of the drive motor 603, and the rotating gear 604 meshes with the rack 602.

[0020] Specifically, a T-shaped slide is installed on the outer side of the annular sealing plate 404, and a T-shaped groove is opened on the outer side of the annular drive plate 501, and the T-shaped slide is slidably connected to the corresponding T-shaped slide.

[0021] Specifically, a rotary motor 302 is installed on one side of the U-shaped frame 101, and a linkage mechanism is provided between the rotary motor 302 and the hollow stirring shaft 201.

[0022] Specifically, the linkage mechanism includes a driving bevel gear 303 and a driven bevel gear 301. The driving bevel gear 303 is fixedly installed on the output shaft of the rotary motor 302, and the driven bevel gear 301 is installed on the hollow stirring shaft 201. The driving bevel gear 303 meshes with the corresponding driven bevel gear 301.

[0023] Specifically, a liquid storage tank is provided on one side of the U-shaped frame 101, and a water pump connected to the liquid supply pipe 403 is installed on the liquid storage tank.

[0024] Working principle: During concrete 3D printing, concrete slurry is added to the mixing tank 102, the rotary motor 302 is started, and its output shaft drives the drive bevel gear 303 to rotate. Since the drive bevel gear 303 meshes with the driven bevel gear 301, it drives the hollow mixing shaft 201 to rotate. The mixing blades 202 on the hollow mixing shaft 201 rotate accordingly, stirring the concrete in the mixing tank 102. Compressed air (pressure adjustment range is 0.1-0.3 MPa) is injected into the mixing tank 102 through a pressure injector, pushing the concrete along the conical bottom of the mixing tank 102 towards the nozzle, thus achieving the printing purpose. At this time, the protective mechanism is in a protective state. The through hole 503 on the annular rotating plate 502 and the through hole 405 on the annular sealing plate 404 are staggered. This can effectively prevent the concrete residue splashed during the mixing process from entering the area of ​​the spray head 402, avoid the spray head 402 from being blocked or damaged, and play a good protective role. When the hollow stirring shaft 201 needs to be cleaned, the drive motor 603 is started. The output shaft of the drive motor 603 drives the rotating gear 604 to rotate. Since the rotating gear 604 meshes with the rack 602 in the arc groove 601 on the outer side of the annular drive plate 501, it will drive the annular drive plate 501 to rotate. The rotation of the annular drive plate 501 will drive the annular rotating plate 502 to rotate. When the second through hole 503 on the annular rotating plate 502 rotates to correspond with the first through hole 405 on the annular sealing plate 404, the drive motor 603 is turned off. Then the water pump is started. The cleaning liquid in the storage tank is delivered to the annular spray pipe 401 through the liquid supply pipe 403, and then sprayed out through the spray head 402. The sprayed cleaning liquid passes through the first through hole 405 and the second through hole 503 in sequence to spray and clean the hollow stirring shaft 201. After cleaning is completed, turn off the water pump and restart the drive motor 603 to re-align the through hole 503 on the annular rotating plate 502 with the through hole 405 on the annular sealing plate 404, restoring the protective state for the next mixing operation.

[0025] The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A self-cleaning structure for a hollow mixing shaft in a concrete 3D printer, characterized in that, Includes a U-shaped frame (101), a mixing tank (102) is installed at the bottom of the U-shaped frame (101), a conical nozzle (103) is provided at the bottom of the mixing tank (102), and a hollow stirring shaft (201) extending into the mixing tank (102) is rotatably installed on the U-shaped frame (101), and a plurality of stirring blades (202) are installed on the hollow stirring shaft (201). The bottom of the U-shaped frame (101) is equipped with an annular spray pipe (401), and a liquid supply pipe (403) extending to the outside of the mixing tank (102) is installed on one side of the annular spray pipe (401). Multiple spray heads (402) for cleaning the hollow mixing shaft (201) are installed on the annular spray pipe (401), and a protective mechanism for protecting the spray heads (402) is provided on the inner wall of the mixing tank (102).

2. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 1, characterized in that: The protective mechanism includes an annular sealing plate (404), and the top of the annular sealing plate (404) has a plurality of through holes (405) with one side open, and the through holes (405) are located below the spray head (402).

3. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 2, characterized in that: An annular drive plate (501) is rotatably mounted on the inner wall of the annular sealing plate (404), and an annular rotating plate (502) is fixedly mounted on the outer side of the annular drive plate (501). The annular rotating plate (502) is rotatably mounted on the bottom of the annular sealing plate (404).

4. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 3, characterized in that: The top of the annular rotating plate (502) is provided with multiple through holes (503), and the through holes (503) are adapted to the corresponding through holes (405).

5. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 1, characterized in that: A drive motor (603) is installed inside the U-shaped frame (101), and a drive mechanism is provided between the drive motor (603) and the annular drive plate (501).

6. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 5, characterized in that: The drive mechanism includes a rotating gear (604), an arc groove (601), and a rack (602). An arc groove (601) is provided on the outer side of the annular drive plate (501), and a rack (602) is installed on the inner wall of the arc groove (601). A rotating gear (604) is installed on the output shaft of the drive motor (603), and the rotating gear (604) meshes with the rack (602).

7. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 3, characterized in that: A T-shaped slide block is installed on the outer side of the annular sealing plate (404), and a T-shaped slide groove is opened on the outer side of the annular drive plate (501), and the T-shaped slide block is slidably connected to the corresponding T-shaped slide block.

8. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 1, characterized in that: A rotary motor (302) is installed on one side of the U-shaped frame (101), and a linkage mechanism is provided between the rotary motor (302) and the hollow stirring shaft (201).

9. The self-cleaning structure of a hollow mixing shaft in a concrete 3D printer according to claim 8, characterized in that: The linkage mechanism includes a driving bevel gear (303) and a driven bevel gear (301). The driving bevel gear (303) is fixedly installed on the output shaft of the rotary motor (302), and the driven bevel gear (301) is installed on the hollow stirring shaft (201). The driving bevel gear (303) meshes with the corresponding driven bevel gear (301).

10. The self-cleaning structure of the hollow mixing shaft of a concrete 3D printer according to claim 1, characterized in that: A liquid storage tank is provided on one side of the U-shaped frame (101), and a water pump connected to the liquid supply pipe (403) is installed on the liquid storage tank.

Images