Carbon-sequestration premixed concrete integrated stirring device

Abstract

The utility model provides a carbon sequestration premixed concrete integrated stirring device which comprises a stirring barrel and a stirring assembly, a stirring cavity is formed in the stirring barrel, the stirring assembly comprises stirring blades, air outlet holes are formed in the far ends of the stirring blades, the stirring blades are rotatably arranged in the stirring cavity, and in the rotating process of the stirring blades, the air outlet holes are formed in the far ends of the stirring blades. The air outlet holes can repeatedly pass through the lower part of the stirring cavity so as to intrude into the mixed material, and the air outlet holes can also be connected to a CO2 air source positioned outside the stirring barrel through air passages arranged in the stirring blades. In the process that the stirring blades rotate along with the stirring shaft to stir the mixed material, carbon sequestration is carried out on the surface of the mixed material in the gaps of the stirring cavity, such as the top, and carbon sequestration is also carried out in the mixed material, so that CO2 gas can be in full contact with the mixed material, the carbon sequestration efficiency is higher, and the carbon sequestration effect is better.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and in particular to an integrated mixing device for carbon-fixing ready-mixed concrete. Background Art

[0002] In the related art, concrete mixers are mainly used to mix the mixtures used to produce various types of concrete building materials. They are mainly composed of a mixing drum, a mixing assembly, a drive assembly, and an electronic control system. After the raw materials of the concrete building materials are added into the mixing drum in proportion through the inlet on the mixing drum, the drive assembly drives the mixing assembly to mix the mixture in the mixing drum. After the mixture is fully mixed, it can be used to produce various types of concrete building materials. According to relevant research, carbonizing the mixture during the mixing process can improve the mechanical properties of concrete building materials to a certain extent. However, the existing concrete mixing equipment is limited in structure, resulting in insufficient contact between carbon dioxide and the mixture, low carbon fixation efficiency and poor uniformity. Utility Model Content

[0003] The embodiment of the present application provides an integrated mixing device for carbon-fixing ready-mixed concrete, so as to at least solve the technical problems of low carbon-fixing efficiency and poor effect of the existing integrated mixing device for carbon-fixing ready-mixed concrete.

[0004] The present invention provides an integrated mixing device for carbon-fixing ready-mixed concrete, comprising:

[0005] A mixing drum defines a sealed mixing chamber, wherein the mixing chamber is used to contain the mixed material;

[0006] A stirring assembly includes a stirring blade, wherein a distal end of the stirring blade is provided with an air outlet, the stirring blade is rotatably disposed in the stirring chamber, and during the rotation of the stirring blade, the air outlet can repeatedly pass through the lower portion of the stirring chamber to penetrate into the mixed material;

[0007] A driving assembly, connected to the stirring assembly, for driving the stirring blade to rotate;

[0008] The air outlet can also be connected to a CO2 gas source located outside the mixing drum through an air channel provided in the mixing blade.

[0009] The integrated mixing device for carbon-fixing ready-mixed concrete according to the embodiment of the present application has at least the following beneficial effects:

[0010] By providing an air outlet at the far end of the stirring blade, the air outlet is connected to an air duct provided in the stirring blade, and the CO2 gas can be discharged from the air outlet along the air duct. Therefore, in the process of the stirring blade rotating along the stirring shaft to stir the mixed material, in addition to carbon fixation on the surface of the mixed material in the gap area of ​​the stirring chamber, such as the upper part, carbon fixation is also carried out inside the mixed material at the same time, so that the CO2 gas can fully contact the mixed material, the carbon fixation efficiency is higher, and the carbon fixation effect is better.

[0011] In a possible embodiment, at least two air outlet holes are provided on the stirring blade, and the at least two air outlet holes are spaced apart and distributed along the radial direction of the stirring chamber.

[0012] Since the two gas outlets are located at different layer positions, CO2 gas can be injected into the mixed materials at different positions, thereby further improving the carbon fixation efficiency and effect.

[0013] In a possible implementation manner, the stirring blade is provided with the air outlet holes on both the front and back sides.

[0014] Since the air outlet holes are provided on both the front and back sides, carbon fixation can be performed on the mixed materials on both sides of the stirring blade at the same time, which can further improve the carbon fixation efficiency and the carbon fixation effect.

[0015] In a possible embodiment, the stirring assembly further includes a stirring shaft, which is arranged in the stirring chamber along the axial direction of the stirring drum, and both ends of the stirring shaft are connected to the stirring drum through bearings, the stirring blade is installed on the stirring shaft, one end of the stirring shaft is connected to the assembly, an air channel is provided in the stirring shaft, and the air channel provided in the stirring shaft is connected to the air channel provided on the stirring blade.

[0016] By connecting the stirring shaft to an external CO2 gas source, the CO2 gas can be easily output to the air channel in the stirring blade and discharged from the outlet for carbon fixation, which is very convenient.

[0017] In a possible embodiment, an air inlet is provided at one end of the stirring shaft connected to the component, and the air inlet is used to be connected to the CO2 gas source.

[0018] In a possible implementation, there are multiple stirring blades, and the multiple stirring blades are installed on the stirring shaft at intervals.

[0019] By providing a plurality of stirring blades, the stirring efficiency and the stirring effect can be improved.

[0020] In a possible implementation, the stirring blade is a single piece, and the installation angles of the plurality of stirring blades along the circumferential direction of the stirring shaft are different.

[0021] By arranging a plurality of single-piece stirring blades at different installation angles along the circumferential direction of the stirring shaft, the driving assembly can be driven easily.

[0022] In a possible implementation, the stirring assembly further includes a filtering device, and the filtering device is disposed at the air outlet.

[0023] By providing a filtering device, the risk of the air outlet being blocked can be reduced.

[0024] In a possible embodiment, the filtering device includes multiple layers of filter screens, and the mesh size of each filter screen is arranged from large to small from the side close to the stirring chamber to the side away from the stirring chamber.

[0025] By configuring the filter device to include a multi-layer filter screen combination with different pore sizes, mud can be effectively prevented from entering the air outlet.

[0026] In a possible implementation, a pressure sensor is further included, and the pressure sensor is disposed at the top of the stirring chamber and is used to measure the gas pressure in the stirring chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of an integrated mixing device for carbon-fixing ready-mixed concrete provided in an embodiment of the present application;

[0029] Figure 2 yes Figure 1 Schematic diagram of the combined state of the stirring shaft and the stirring blades in the integrated mixing device for carbon fixation ready-mixed concrete;

[0030] Figure 3 yes Figure 1 A schematic diagram of the structure of the mixing blades in the integrated mixing device for carbon fixation ready-mixed concrete;

[0031] Figure 4 This is an exploded schematic diagram of a filtering device in an integrated mixing device for carbon-fixing ready-mixed concrete provided in an embodiment of the present application;

[0032] Figure 5 Schematic diagram of a carbon fixation mixing system composed of an integrated carbon fixation ready-mixed concrete mixing device provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] 100-stirring device, 110-stirring drum, 111-stirring chamber, 112-feed port, 113-pressure gauge, 120-stirring assembly, 121-stirring shaft, 1211-air inlet, 122-stirring blade, 1221-air outlet, 123-filtering device, 1231-first filter screen, 1232-second filter screen, 1233-third filter screen, 124-bearing, 130-drive assembly, 140-support foot, 150-electrical control box;

[0035] 200-Carbon fixation stirring system, 210-CO2 gas source, 220-Temperature control device, 230-Control console, 240-CO2 recovery device. DETAILED DESCRIPTION

[0036] Examples of the present embodiment are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present embodiment and are not to be construed as limiting the present embodiment.

[0037] In the description of this embodiment, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this embodiment.

[0038] In the description of this embodiment, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of this embodiment, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this embodiment based on the specific content of the technical solution.

[0040] The figure is a schematic diagram of an integrated mixing device 100 for carbon-fixing ready-mixed concrete according to an embodiment of the present application. The mixing device 100 is used to mix mixed materials. It is understood that after being mixed by the mixing device 100 of the present application, these mixed materials can be used to prepare various concrete building materials, such as concrete, standard bricks, and sand-lime bricks. Before using the mixing device 100 of the embodiment of the present application to mix the mixed materials, the raw materials for the mixed materials, including aggregates, additives, etc., should be prepared in proportion according to the specific concrete building materials to be prepared.

[0041] like Figure 1 As shown, the stirring device 100 includes a stirring drum 110, a stirring assembly 120, a driving assembly 130 and other auxiliary components.

[0042] The mixing drum 110 will be described in detail below.

[0043] like Figure 1 As shown, combined with Figure 5 The mixing drum 110 is a container in the mixing device 100 for holding the mixed material to be mixed. It also provides a working environment for the mixing assembly 120 to perform mixing operations. The inner wall of the mixing drum 110 defines a mixing chamber 111 for containing the mixed material. The mixing drum 110 is preferably made of metal to provide good structural strength. For example, the mixing drum 110 can be welded from multiple steel plates.

[0044] It should be noted that although the term "mixing drum 110" is used herein, this does not mean that the shape of the mixing drum 110 is limited to being cylindrical. Rather, it should be understood more broadly, and the mixing drum 110 may also be in a block, column, or irregular shape, etc., without limitation herein. Furthermore, it should be understood that, generally, the shape of the mixing chamber 111 is determined by the outer shape of the mixing drum 110 itself. For example, for a cylindrical mixing drum 110, its mixing chamber 111 is also cylindrical to facilitate the arrangement of the axially extending mixing assembly 120.

[0045] It is understood that in order to facilitate the addition of various raw materials, the mixing drum 110 is provided with a feed port 112 on its wall for the entry of raw materials such as various powders and water. The feed port 112 is connected to the mixing chamber 111, so that the raw materials can be placed into the mixing chamber 111 through the feed port 112 for mixing and stirring. Of course, it is understood that multiple feed ports 112 can be provided to facilitate the addition of different raw materials through different feed ports 112 to improve feeding efficiency. It is also understood that the feed port 112 can be provided at the top of the mixing drum 110 to facilitate the addition and mixing of raw materials.

[0046] At the same time, after the mixing is completed, in order to facilitate the discharge of the mixed material from the mixing drum 110, the mixing drum 110 is also provided with a discharge port (not shown in the figure) on the drum wall for discharging the mixed material. The discharge port is connected to the mixing chamber 111, so that the mixed material is discharged through the discharge port. It is understood that in order to facilitate the discharge of the mixed material, the discharge port can be set at the bottom of the mixing drum 110.

[0047] It can be understood that in order to facilitate the carbon fixation operation, the stirring chamber 111 is sealed. In order to fix the carbon of the mixed material during the stirring process, a CO2 atmosphere with a certain pressure can be formed in the stirring chamber 111 through an external CO2 gas source. The specific pressure can be determined according to the process requirements.

[0048] Furthermore, in some embodiments, the stirring device 100 further includes a pressure sensor installed in the stirring chamber 111 for measuring the pressure in the stirring chamber 111 to facilitate controlling the CO2 pressure to meet carbon sequestration requirements. A pressure gauge 113 is conveniently provided on the outside of the stirring drum 110 to display the pressure in the stirring chamber 111.

[0049] The stirring assembly 120 is described in detail below.

[0050] like Figures 1 to 3 As shown, the stirring assembly 120 is installed in the mixing drum 110, and the mixing material is stirred by the rotation of the stirring blade 122. Specifically, the stirring assembly 120 mainly includes a stirring shaft 121 and a stirring blade 122 installed on the stirring shaft 121.

[0051] Among them, the stirring shaft 121 is a shaft-like component. In order to cooperate with it, the stirring chamber 111 also has a stirring chamber 111 for accommodating the overall length of the stirring shaft 121, that is, the axial direction of the stirring chamber 111 is consistent with the axial length of the stirring shaft 121, and, in order to be able to rotatably support the stirring shaft 121, the stirring assembly 120 also includes a pair of bearings 124, and the two ends of the stirring shaft 121 are respectively connected to the barrel wall of the mixing drum 110 through the bearings 124, and one end of the stirring shaft 121 is connected to the driving assembly 130 described below, and can be driven by the driving assembly 130 to rotate. It can be understood that, thus, driven by the driving assembly 130 described below, the stirring shaft 121 can rotate at a certain speed, thereby driving the stirring blade 122 to rotate, thereby stirring the mixed material located in the stirring chamber 111.

[0052] It can be understood that in this embodiment, the stirring shaft 121 is placed horizontally in the stirring chamber 111. Therefore, when the stirring blade 122 rotates with the stirring shaft 121, it can stir from the bottom to the top of the stirring chamber 111 along the circumference of the stirring shaft 121, and can fully flip and mix the mixed materials, resulting in a better stirring effect.

[0053] It is understood that the number of stirring shafts 121 is not limited to one. For example, as shown in the figure, two stirring shafts 121 are provided, and the two stirring shafts 121 are installed parallel to the stirring drum 110 at a certain distance. For example, the distance is determined so that the stirring blades 122 do not interfere with each other. Therefore, by the two stirring shafts 121 working in parallel, the material can be stirred in all directions and at multiple angles, thereby achieving a better stirring effect.

[0054] It is understood that the stirring blade 122 is mounted on the stirring shaft 121, whereby the stirring blade 122 is centered on the rotation axis of the stirring shaft 121 and can rotate as the stirring shaft 121 rotates to stir the mixture. In addition, it is understood that during the process of stirring the mixture, the mixture does not fill the entire stirring chamber 111, but is deposited at the bottom of the stirring chamber 111, and the top surface height of the mixture is generally determined by the amount of material added. As before, the stirring shaft 121 is placed horizontally in the stirring chamber 111, whereby, during the process of the stirring blade 122 rotating with the stirring shaft 121, at least the distal portion thereof can be repeatedly immersed in the mixture located in the stirring chamber 111.

[0055] In this embodiment, in order to be able to fix carbon inside the mixed material, an air outlet 1221 is provided at the far end of the stirring blade 122, and the air outlet 1221 is connected by an air duct provided in the stirring blade 122, and CO2 gas can be discharged from the air outlet 1221 along the air duct. Therefore, in the process of the stirring blade 122 rotating along the stirring shaft 121 to stir the mixed material, in addition to fixing carbon on the surface of the mixed material in the gap of the stirring chamber 111, such as the top, carbon is also fixed inside the mixed material at the same time, so that the CO2 gas can fully contact the mixed material, the carbon fixation efficiency is higher, and the carbon fixation effect is better.

[0056] It should be noted that the distal end described here refers to the end of the stirring blade 122 away from the stirring shaft 121 .

[0057] It can be understood that in order to conveniently transport the gas from the external CO2 gas source to the air duct located in the stirring blade 122, in some embodiments, an air duct is also provided in the stirring shaft 121, and the air duct provided in the stirring shaft 121 is connected to the air duct provided in the stirring blade 122. In this way, by connecting the stirring shaft 121 to the external CO2 gas source, the CO2 gas can be conveniently output to the air duct in the stirring blade 122 and discharged from the outlet 1221 for carbon fixation.

[0058] It can be understood that one end of the stirring shaft 121 is connected to the drive assembly 130. Therefore, in order to facilitate layout, in some embodiments, an air inlet 1211 is provided at the end of the stirring shaft 121 that is not connected to the drive assembly 130. The air inlet 1211 is connected to the air duct in the stirring shaft 121. The external CO2 gas source can supply gas to the air duct in the stirring shaft 121 through the air inlet 1211, which is very convenient.

[0059] To further improve carbon sequestration efficiency and effectiveness, in some embodiments, two gas outlet holes 1221 are provided on the stirring blade 122, and these two gas outlet holes 1221 are spaced apart and distributed along the radial direction of the stirring chamber 111. Thus, when the stirring blade 122 is immersed in the mixed material, the two gas outlet holes 1221 are located at different layered positions, thereby injecting CO2 gas into the mixed material at different positions. Of course, this is not limited to this, and the number of gas outlet holes 1221 can also be greater, for example, three or more.

[0060] In addition, in some embodiments, the stirring blade 122 is provided with air outlet holes 1221 on both the front and back sides along the axial direction, thereby further improving the carbon fixation efficiency and effect.

[0061] It is understandable that the shape of the air outlet 1221 is preferably circular, but is of course not limited thereto and may be any other suitable shape.

[0062] like Figure 4 As shown, it can be understood that the mixed material is usually in a slurry state. Without any protection, these slurries can easily enter the air outlet 1221 and may block the air outlet 1221, thereby affecting the carbon fixation effect. Therefore, in some embodiments, in order to prevent the mixed material from clogging the air outlet 1221, the stirring assembly 120 also includes a filter device 123, which is arranged at the air outlet 1221.

[0063] Furthermore, the filter device 123 includes multiple layers of filter screens, and the mesh size of the filter screens is arranged from small to large from the side facing the stirring chamber 111 to the side away from the stirring chamber 111, which can effectively prevent the slurry from entering the air outlet 1221. For example, the filter device 123 includes a first filter screen 1231, a second filter screen 1232, and a third filter screen 1233, which are arranged in sequence from the outside to the inside. These filter screens are all made of metal materials, and the aperture of the first filter screen 1231 is 800 mesh, the aperture of the second filter screen 1232 is 600 mesh, and the aperture of the third filter screen 1233 is 500 mesh.

[0064] like Figure 2 and Figure 3 As shown, the stirring blade 122 is a single-piece structure, that is, along its rotation direction, the stirring blade 122 has only one blade. Of course, it is not limited to this, and the stirring blade 122 can also be a multi-piece design.

[0065] In order to improve the stirring efficiency, in some embodiments, the stirring blade 122 has a plurality of stirring blades 122, and the plurality of stirring blades 122 are installed at intervals on the stirring shaft 121. It is understandable that, in this case, the air channel of each stirring blade 122 is connected to the air channel in the stirring shaft 121. Moreover, when the stirring blade 122 is provided as a single-piece structure, in order to facilitate the driving rotation by the driving assembly 130, the installation angles of these stirring blades 122 along the circumferential direction of the stirring shaft 121 are different, so as to improve the rotational inertia of the stirring assembly 120 composed of the stirring shaft 121 and the stirring blades 122.

[0066] The drive assembly 130 is described in detail below.

[0067] like Figure 1 As shown, the drive assembly 130 is mounted on the outside of the mixing drum 110 and is used to drive the stirring assembly 120 to rotate to stir the mixed material. Specifically, the drive assembly 130 mainly includes a motor 131 and a reducer 132 connected to the motor. The output shaft of the reducer 132 is in transmission connection with the stirring shaft 121. When the motor 131 is running, the rotational motion is transmitted to the stirring shaft 121, driving the stirring shaft 121 to rotate at a preset speed.

[0068] It is understandable that, in order to facilitate arrangement and compactness, in some embodiments, the drive assembly 130 is directly or indirectly connected to the mixing drum 110 .

[0069] like Figure 1 As shown, combined with Figure 5 The stirring device 100 may also include some auxiliary components, such as support legs 140, an electric control box 150, etc., which are irrelevant to the purpose of this application and will not be described in detail.

[0070] like Figure 5, is a schematic diagram of a carbon fixation stirring system 200 composed of a stirring device 100 according to an embodiment of the present application, wherein the carbon fixation system includes the stirring device 100, a CO2 gas source 210, a temperature regulating device 220, a control console 230, and a CO2 recovery device 240. Specifically, the CO2 gas source 210 includes a CO2 gas cylinder filled with liquid CO2, the temperature regulating device 220 is connected to the CO2 gas cylinder, and is used to heat the liquid CO2 so as to gasify the liquid CO2, the air inlet 1211 of the stirring device 100 is connected to the temperature regulating device 220, and the CO2 gas output by the temperature regulating device 220 enters the stirring assembly 120 through the air inlet 1211 and is finally discharged at the air outlet 1221, and the CO2 recovery device 240 includes a recovery gas cylinder, which is used to recover the CO2 gas after the reaction. In addition, the console 230 is used to send control signals according to various inputs to open or close each solenoid valve in the system, thereby starting or cutting off the gas supply, and adjusting the flow rate and flow rate of the CO2 gas.

[0071] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present embodiment. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0072] Although examples of the present embodiment have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and intent of the present embodiment, and the scope of the present embodiment is defined by the claims and their equivalents.

Claims

1. An integrated mixing device for carbon-fixing ready-mixed concrete, used for mixing a mixture composed of raw materials for concrete building materials, characterized in that: include: A mixing drum defines a sealed mixing chamber, wherein the mixing chamber is used to contain the mixed material; A stirring assembly includes a stirring blade, wherein a distal end of the stirring blade is provided with an air outlet, the stirring blade is rotatably disposed in the stirring chamber, and during the rotation of the stirring blade, the air outlet can repeatedly pass through the lower portion of the stirring chamber to penetrate into the mixed material; A driving assembly, connected to the stirring assembly, for driving the stirring blade to rotate; The air outlet can also be connected to a CO2 gas source located outside the mixing drum through an air channel provided in the mixing blade.

2. The stirring device according to claim 1, characterized in that There are at least two air outlet holes on the stirring blade, and the at least two air outlet holes are distributed at intervals along the radial direction of the stirring chamber.

3. The stirring device according to claim 1, characterized in that The stirring blade is provided with the air outlet holes on both the front and back sides.

4. The stirring device according to any one of claims 1 to 3, characterized in that The stirring assembly also includes a stirring shaft, which is arranged in the stirring chamber along the axial direction of the stirring drum, and both ends of the stirring shaft are connected to the stirring drum through bearings. The stirring blade is installed on the stirring shaft, and one end of the stirring shaft is connected to the assembly. An air channel is provided in the stirring shaft, and the air channel provided in the stirring shaft is connected to the air channel provided on the stirring blade.

5. The stirring device according to claim 4, characterized in that An air inlet is provided at one end of the stirring shaft connected to the component, and the air inlet is used to be connected to the CO2 gas source.

6. The stirring device according to claim 4, characterized in that There are a plurality of stirring blades, and the plurality of stirring blades are installed on the stirring shaft at intervals.

7. The stirring device according to claim 6, characterized in that The stirring blade is a single piece, and the installation angles of the plurality of stirring blades along the circumferential direction of the stirring shaft are different.

8. The stirring device according to claim 1, characterized in that The stirring assembly further includes a filtering device, which is arranged at the air outlet.

9. The stirring device according to claim 8, characterized in that The filtering device includes multiple layers of filter screens, and the mesh size of each filter screen is arranged from large to small from the side close to the stirring chamber to the side away from the stirring chamber.

10. The stirring device according to any one of claims 1 to 3, characterized in that The device further comprises a pressure sensor, which is arranged at the top of the stirring chamber and is used to measure the gas pressure in the stirring chamber.

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