A preparation device of a nano-silica-based concrete anti-cracking interface agent

Abstract

The utility model discloses a kind of concrete anti-cracking interface agent preparation devices based on nanometer silicon dioxide, including a kind of concrete anti-cracking interface agent preparation devices based on nanometer silicon dioxide, including venturi tube type disperser, powder airtight feeding hopper, vacuum pump, liquid flow circulation impact unit and first finished product defoaming stable unit, venturi tube type disperser liquid inlet connects liquid base material supply pipeline, negative pressure suction port is connected to the bottom of powder airtight feeding hopper by powder suction hose;Liquid flow circulation impact unit includes circulating tank and multistage centrifugal pump, the inlet of circulating tank is connected with the liquid outlet of venturi tube type disperser, the inlet of multistage centrifugal pump is connected circulating tank bottom, and its outlet is connected back venturi tube type disperser liquid inlet by circulation pipeline, in summary, the utility model overcomes the deficiencies of prior art, by utilizing venturi effect realizes the automatic, uniform suction and instantaneous mixing of powder and improves mixing effect, with higher social use value and application prospect.

Description

Technical Field

[0001] This utility model relates to the field of concrete crack-resistant interface agent technology, and in particular to a concrete crack-resistant interface agent preparation device based on nano-silica. Background Technology

[0002] Nano-silica, as a key component of concrete interface agents, directly affects crack resistance due to its uniform dispersion. Traditional mechanical mixing methods suffer from insufficient shear force, easy introduction of air bubbles, and secondary agglomeration of nanoparticles. Although high-shear emulsification equipment has improved, it still relies on the direct action of mechanical parts on the material, resulting in high energy consumption, significant component wear, and limited improvement in final dispersion. Therefore, a non-traditional, gentler, and more efficient dispersion technology is needed to overcome the limitations of mechanical mixing. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a device for preparing a concrete crack-resistant interface agent based on nano-silica.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A concrete crack-resistant interface agent preparation device based on nano-silica includes a venturi tube disperser, a closed powder feeding hopper, a vacuum pump, a liquid flow circulation impact unit, and a finished product defoaming and stabilization unit. The liquid inlet of the venturi tube disperser is connected to a liquid base material supply pipeline, and the negative pressure suction port is connected to the bottom of the closed powder feeding hopper through a powder suction hose. The liquid circulation impact unit includes a circulation tank and a multi-stage centrifugal pump. The inlet of the circulation tank is connected to the outlet of the venturi tube disperser, and the inlet of the multi-stage centrifugal pump is connected to the bottom of the circulation tank. Its outlet is connected back to the inlet of the venturi tube disperser through a circulation pipe.

[0005] Preferably, the powder-sealed feeding hopper is provided with a sealing cover with a sealing ring at the top and a powder outlet at the bottom, with a second valve at the powder outlet.

[0006] Preferably, the vacuum pump is connected to the diffuser section of the Venturi tube diffuser via a vacuum pipe to maintain a negative pressure environment inside the Venturi tube.

[0007] Preferably, the multi-stage centrifugal pump is provided with a finished product output pipe, and a first valve is provided on the finished product output pipe.

[0008] Preferably, the top vacuum port of the multi-stage centrifugal pump is connected to a second vacuum pump via a pipe, and an ultrasonic vibration plate is installed at the bottom of the vacuum degassing tank.

[0009] Preferably, the finished product degassing and stabilization unit is mainly a vacuum degassing tank, the inlet of which is connected to the finished product output pipe.

[0010] Preferably, the inner wall of the circulation tank is equipped with an observation window and a liquid level sensor.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. Novel dispersion mechanism: The Venturi effect is used to achieve automatic and uniform intake and instantaneous mixing of powder, avoiding dust and uneven premixing caused by manual feeding; the impact kinetic energy of high-speed liquid flow is used for dispersion, rather than mechanical shearing, resulting in a gentler and more complete dispersion effect, effectively preventing changes in the surface properties or secondary agglomeration of nanoparticles due to excessive mechanical force.

[0012] 2. High efficiency and energy saving: Vacuum suction and fluid impact dispersion methods have relatively low energy consumption and avoid mechanical wear and maintenance problems of moving parts such as rotors and stators in high shear equipment.

[0013] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and improves the mixing effect by utilizing the Venturi effect to achieve automatic and uniform powder intake and instantaneous mixing. It has high social use value and application prospects. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the Venturi tube disperser of this utility model. Figure 3 This is a schematic diagram of the closed powder feeding hopper structure of this utility model.

[0016] In the diagram: 1. Venturi tube disperser; 2. Closed powder feeding hopper; 3. Powder suction hose; 4. Vacuum pump; 5. Vacuum pipeline; 6. Liquid base material supply pipeline; 7. Circulation tank; 8. Multistage centrifugal pump; 9. Circulation pipeline; 10. Finished product output pipeline; 11. First valve; 12. Vacuum degassing tank; 14. Ultrasonic vibration plate; 13. Second vacuum pump; 71. Observation window; 102. Liquid inlet; 103. Liquid outlet; 101. Negative pressure suction inlet; 202. Powder outlet; 203. Second valve; 201. Sealing cover. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0018] Reference Figure 1-3 A concrete crack-resistant interface agent preparation device based on nano-silica includes a Venturi tube disperser 1, a closed powder feeding hopper 2, a vacuum pump 4, a liquid flow circulation impact unit and a finished product defoaming and stabilizing unit. The inlet of the Venturi tube disperser 1 is connected to a liquid base material supply pipe 6, and the negative pressure suction port is connected to the bottom of the closed powder feeding hopper 2 through a powder suction hose 3. The powder closed feeding hopper 2 is equipped with a sealing cover 201 with a sealing ring at the top and a powder outlet 202 at the bottom, and a second valve 203 is provided at the powder outlet 202; Vacuum pump 4 is connected to the diffuser section of Venturi tube disperser 1 via vacuum pipe 5 to maintain the negative pressure environment inside the Venturi tube. The liquid circulation impact unit includes a circulation tank 7 and a multi-stage centrifugal pump 8. The inlet of the circulation tank 7 is connected to the outlet 103 of the venturi tube disperser 1. The inner wall of the circulation tank 7 is equipped with an observation window 17 and a liquid level sensor. The inlet of the multi-stage centrifugal pump 8 is connected to the bottom of the circulation tank 7, and its outlet is connected back to the inlet 102 of the venturi tube disperser 1 via a circulation pipe 9. The multi-stage centrifugal pump 8 is also equipped with a finished product output pipe 10. A first valve 11 is installed on the finished product output pipe 10, and the multi-stage centrifugal pump 8 can provide a pressure of 1.2 MPa.

[0019] The finished product degassing and stabilization unit is mainly a vacuum degassing tank 12. Its inlet is connected to the finished product output pipe 10, and the top vacuum port is connected to the second vacuum pump 13 through a pipe. An ultrasonic vibration plate 14 is installed at the bottom inside the vacuum degassing tank 12.

[0020] The device is also equipped with a controller for controlling the start-up and shutdown of the vacuum pump 4, the multi-stage centrifugal pump, the ultrasonic vibration plate 14, the first valve 11, and the second valve 203, as well as their operating parameters.

[0021] Working principle: Close the second valve 203 at the bottom of the powder feeding hopper 2, add nano-silica powder and seal it. Inject an appropriate amount of liquid base material into the circulation tank 7, start the vacuum pump 4 and the multi-stage centrifugal pump 8, and adjust the liquid circulation flow rate. Open the second valve 203 at the bottom of the powder feeding hopper 2. The powder is uniformly drawn in and dispersed under the negative pressure of the Venturi tube disperser 1. After the material is circulated and impacted in the system for a certain period of time, open the valve of the finished product output pipe 10 and send part of the material into the vacuum degassing tank 12. Turn on the ultrasonic vibration plate 14 and perform vacuum degassing. The final product is obtained after processing.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preparing a concrete crack-resistant interface agent based on nano-silica, characterized in that, include Venturi tube disperser (1), powder closed feeding hopper (2), vacuum pump (4), liquid flow circulation impact unit and finished product defoaming and stabilizing unit, wherein the liquid inlet (102) of the Venturi tube disperser (1) is connected to the liquid base material supply pipeline (6), and the negative pressure suction port is connected to the bottom of the powder closed feeding hopper (2) through the powder suction hose (3); The liquid circulation impact unit includes a circulation tank (7) and a multi-stage centrifugal pump (8). The inlet of the circulation tank (7) is connected to the outlet (103) of the Venturi tube disperser (1). The inlet of the multi-stage centrifugal pump (8) is connected to the bottom of the circulation tank (7), and its outlet is connected back to the inlet (102) of the Venturi tube disperser (1) through a circulation pipe (9).

2. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 1, characterized in that: The powder closed feeding hopper (2) is provided with a sealing cover (201) with a sealing ring at the top and a powder outlet (202) at the bottom. A second valve (203) is provided at the powder outlet (202).

3. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 1, characterized in that: The vacuum pump (4) is connected to the diffuser section of the Venturi tube diffuser (1) via a vacuum pipe (5) to maintain the negative pressure environment inside the Venturi tube.

4. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 3, characterized in that: The multistage centrifugal pump (8) is equipped with a finished product output pipe (10), and a first valve (11) is provided on the finished product output pipe (10).

5. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 4, characterized in that: The top vacuum port of the multi-stage centrifugal pump (8) is connected to the second vacuum pump (13) through a pipe, and an ultrasonic vibration plate (14) is installed at the bottom of the vacuum degassing tank (12).

6. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 1, characterized in that... The finished product degassing and stabilization unit is mainly a vacuum degassing tank (12), whose inlet is connected to the finished product output pipe (10).

7. The apparatus for preparing a concrete crack-resistant interface agent based on nano-silica according to claim 1, characterized in that... The inner wall of the circulating tank (7) is equipped with an observation window (17) and a liquid level sensor.

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