Screw conveying concrete pump suitable for 3D printing

Abstract

The utility model discloses a screw conveying concrete pump suitable for 3D printing. The screw conveying concrete pump comprises a conveying shell, and a discharging opening is formed in one side of the conveying shell; a feeding hole and a spraying head are arranged at the upper part of the conveying shell; a vibration motor and a supporting frame are arranged on the lower portion of the conveying shell. A conveying shaft is horizontally arranged in the middle of the conveying shell, and a spiral blade used for pushing materials is fixedly connected to the conveying shaft. A driving motor is arranged on the other side of the conveying shell, and an output shaft of the driving motor is connected with a coupler and is in transmission connection with one end of the conveying shaft through the coupler. By arranging the spraying head and the vibration motor, the operation of spraying water or additives and vibrating concrete when the concrete is conveyed in a pipeline can be realized, the performance of the concrete is effectively improved, the flowability of the concrete is improved, the phenomenon that the concrete is solidified when conveyed in the pipeline is prevented, bubbles in the concrete are eliminated, and the concrete quality is improved. The dense combination degree of concrete is improved, and the quality of later printed finished products is improved.

Description

Technical Field

[0001] The utility model relates to a concrete pump, in particular to a concrete pump with spiral conveying applicable to 3D printing, belonging to the technical field of concrete conveying equipment. Background Technique

[0002] Concrete 3D printing is an advanced manufacturing method that uses 3D printing technology to construct concrete structures, which can greatly shorten the construction time and improve the construction efficiency. Specifically, when performing concrete 3D printing, a concrete pump is often used during the concrete conveying process. Most concrete pumps drive rotating blades through a rotating shaft to push the materials entering the conveying pipeline, so that the materials move from one end of the conveying pipeline to the other end, realizing the conveying of concrete. However, if the conveying distance is too long and the concrete is conveyed in the pipeline for too long, the fluidity of the concrete will be greatly reduced, and it will gradually solidify, affecting the use performance of the concrete; in addition, during the conveying process of the concrete, there are a large number of air bubbles inside it, and the density bonding degree is relatively low, resulting in poor quality of the printed finished product. Content of the Utility Model

[0003] The purpose of the utility model is to provide a concrete pump with spiral conveying applicable to 3D printing to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solutions: a concrete pump with spiral conveying applicable to 3D printing, including a conveying housing,

[0005] An outlet is arranged on one side of the conveying housing;

[0006] An inlet and a spraying head are arranged on the upper part of the conveying housing;

[0007] A vibration motor and a support frame are arranged on the lower part of the conveying housing;

[0008] A conveying shaft is horizontally arranged in the middle part of the conveying housing, and a spiral blade for pushing materials is fixedly connected to the conveying shaft;

[0009] A driving motor is arranged on the other side of the conveying housing, and an output shaft of the driving motor is connected with a coupling and is in transmission connection with one end of the conveying shaft through the coupling.

[0010] As a further technical solution of the utility model: the driving motor is fixedly installed on the motor mounting frame.

[0011] As a further technical solution of the utility model: the conveying housing is in the shape of a cylinder with an equal outer diameter.

[0012] As a further technical solution of the utility model: the inlet is arranged in a funnel shape on the upper part of the conveying housing, and the spraying heads are arranged at equal intervals on the upper part of the conveying housing.

[0013] As a further technical solution of the present utility model: the discharge port is arranged in a cylindrical shape on one side of the conveying housing, and the axis position of the discharge port is below the axis position of the conveying housing.

[0014] As a further technical solution of the present utility model: the vibration motors are arranged at equal intervals at the lower part of the conveying housing.

[0015] As a further technical solution of the present utility model: two support frames are symmetrically arranged at both ends of the conveying housing, and each support frame includes a support leg, a shock-absorbing spring and a support bottom plate, and the support leg, the shock-absorbing spring and the support bottom plate are fixedly connected in sequence.

[0016] As a further technical solution of the present utility model: the outer diameter of the spiral blade is smaller than the inner diameter of the conveying housing.

[0017] As a further technical solution of the present utility model: the driving motor adopts a servo motor, and the coupling is a flexible coupling.

[0018] Compared with the prior art, the beneficial effects of the present utility model are: by providing a spray head and vibration motors, the operations of spraying water or additives and vibrating the concrete during the conveyance of the concrete in the pipeline can be realized, effectively improving the performance of the concrete, enhancing its fluidity, preventing the phenomenon of the concrete solidifying during the pipeline conveyance, eliminating the internal air bubbles of the concrete, improving the dense bonding degree of the concrete, and improving the quality of the later printed finished products, and having a wide application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0020] Figure 2 is a schematic top view structure diagram of the present utility model;

[0021] Figure 3 is a schematic bottom view structure diagram of the present utility model;

[0022] Figure 4 is a schematic overall three-dimensional diagram of the present utility model;

[0023] Figure 5 is a schematic diagram of the support frame of the present utility model;

[0024] In the figures: 1, coupling; 2, driving motor; 3, motor mounting frame; 4, support leg; 5, shock-absorbing spring; 6, support bottom plate; 7, conveying shaft; 8, spiral blade; 9, vibration motor; 10, discharge port; 11, conveying housing; 12, spray head; 13, feed port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To facilitate problem-solving, an embodiment of the present utility model provides a bearing seat for a cooking kettle. The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0026] Embodiment 1, as Figures 1 to 4 shown, this embodiment provides a concrete pump for screw conveying applicable to 3D printing. The concrete pump includes a conveying housing 11, and a discharge port 10 is installed on the right side of the conveying housing 11; a feed port 13 and a spraying head 12 are installed on the upper part of the conveying housing 11, and both the feed port 13 and the spraying head 12 communicate with the conveying housing 11; a vibration motor 9 and a support frame are installed on the lower part of the conveying housing 11; a conveying shaft 7 is horizontally arranged in the middle part (inner cavity) of the conveying housing 11. And spiral blades 8 for pushing materials are welded on the conveying shaft 7; a driving motor 2 is installed on the left side of the conveying housing 11, the output shaft of the driving motor 2 is connected to a coupling 1, and the coupling 1 is in transmission connection with the left end of the conveying shaft 7.

[0027] Embodiment 2, in addition to including the technical features in Embodiment 1, further includes:

[0028] The driving motor 2 is fixedly installed on a motor mounting frame 3, and the height of the motor mounting frame 3 can be adjusted to ensure that the output shaft of the driving motor 2 is horizontally connected to the connecting shaft 1, and the axial direction of the output shaft of the driving motor 2 coincides with the axial direction of the conveying shaft 7.

[0029] As Figure 1 and Figure 2 shown, the conveying housing 11 is a cylindrical structure with an equal outer diameter. The feed port 13 is arranged in a funnel shape on the upper part of the conveying housing 11, and the spraying heads 12 are arranged at equal intervals on the upper part of the conveying housing 11. When the concrete is conveyed in the pipeline, water or additives can be sprayed on the concrete through the spraying heads 12 to improve the fluidity of the concrete, improve the performance of the concrete, and prevent the concrete from solidifying prematurely.

[0030] The discharge port 10 is arranged in a cylindrical shape on the right side of the conveying housing 11, and the axis position of the discharge port 10 is below the axis position of the conveying housing 11.

[0031] As Figure 3 and Figure 4As shown, the vibration motors 9 are arranged at equal intervals d at the lower part of the conveying housing 11 to provide high-frequency vibration for the concrete during pipeline conveying, eliminate the air bubbles in the concrete, and improve the dense bonding degree of the concrete; two support frames are symmetrically arranged at both ends of the conveying housing 11 to provide a supporting effect for the conveying housing, such as Figure 5 As shown, the support frame includes a support leg 4, a shock-absorbing spring 5, and a support base plate 6, which are welded and connected in sequence.

[0032] The outer diameter of the spiral blade 8 is smaller than the inner diameter of the conveying housing 11; the driving motor 2 uses a servo motor, and the coupling 1 is a flexible coupling.

[0033] When the concrete conveying starts, the driving motor 2 starts first, then the vibration motor 9 starts, and then the concrete is fed into the conveying housing 11 through the feed inlet 13. The driving motor drives the conveying shaft 7 and the spiral blade 8 to rotate, and the concrete moves under the rotation of the spiral blade 8. During the movement, water or additives can be sprayed into the concrete through the spray head 12 to prevent the concrete from solidifying prematurely. The vibration motor 9 at the lower part of the conveying housing generates high-frequency vibration to eliminate the air bubbles inside the concrete, make the concrete densely bonded, and improve the quality of the printed finished product.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screw conveying concrete pump suitable for 3D printing, comprising a conveying housing (11), characterized in that: A material discharge port (10) is provided on one side of the conveying housing (11); The upper portion of the conveying shell (11) is provided with a feed inlet (13) and a spray head (12); A vibration motor (9) and a support frame are provided at the lower part of the conveying housing (11); A conveying shaft (7) is horizontally arranged in the middle part of the conveying housing (11), and a spiral blade (8) for pushing materials is fixedly connected to the conveying shaft (7); A drive motor (2) is provided on the other side of the conveying housing (11); an output shaft of the drive motor (2) is connected to a coupling (1) and is transmission-connected to one end of a conveying shaft (7) via the coupling (1).

2. The concrete pump according to claim 1, characterized in that: The driving motor (2) is fixedly mounted on the motor mounting frame (3).

3. The concrete pump according to claim 1, characterized in that: The conveying shell (11) is in the shape of a cylinder with a constant outer diameter.

4. The concrete pump according to claim 1, characterized in that: The feed port (13) is arranged in a funnel shape on the upper part of the conveying shell (11), and the spray heads (12) are arranged at equal intervals on the upper part of the conveying shell (11).

5. The concrete pump according to claim 1, characterized in that: The discharge port (10) is cylindrical in shape and is arranged on one side of the conveying shell (11), and the axial position of the discharge port (10) is located below the axial position of the conveying shell (11).

6. The concrete pump according to claim 1, characterized in that: The vibration motors (9) are arranged at equal intervals at the lower part of the conveying housing (11).

7. The concrete pump according to claim 1, characterized in that: The two support frames are symmetrically arranged at both ends of the conveying housing (11), and the support frames comprise support legs (4), shock absorbing springs (5) and a support base plate (6), and the support legs (4), shock absorbing springs (5) and the support base plate (6) are fixedly connected in sequence.

8. The concrete pump according to claim 1, characterized in that: The outer diameter of the spiral blade (8) is smaller than the inner diameter of the conveying shell (11).

9. The concrete pump according to claim 1, characterized in that: The driving motor (2) is a servo motor, and the coupling (1) is a flexible coupling.

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