Alkali-free accelerator reaction kettle

Abstract

This utility model discloses an alkali-free quick-setting agent reactor, including a reactor body, a stirring structure, and a material dispensing structure. The reactor body has a material inlet communicating with its inner cavity. The stirring structure has a stirring part rotatably disposed in the inner cavity, which is used to stir the material. The material dispensing structure includes a receiving plate and a crushing part located in the inner cavity. One of the receiving plate and the crushing part is disposed in the stirring part, and the other is disposed in the reactor body. The receiving plate is located below the material inlet and has a channel for the powder to fall. The crushing part is located above the receiving plate and crushes the powder on the receiving plate when rotating relative to the receiving plate. This solution can achieve powder crushing and bottom solution stirring through a single drive mechanism, eliminating the need for a separate stirring mechanism to crush the powder, reducing equipment costs, and preventing the powder from clumping before mixing with the solution, thereby improving the quality and production capacity of the quick-setting agent.

Description

Technical Field

[0001] This utility model relates to the technical field of alkali-free quick-setting agent preparation device, specifically to an alkali-free quick-setting agent reaction vessel. Background Technology

[0002] Accelerators are admixtures added to concrete to enable it to set and harden rapidly. Liquid alkali-free accelerators, used at 6%–8% of the cementitious material in concrete, can achieve initial setting within 5 minutes and final setting within 12 minutes. This allows for rapid setting and hardening of concrete in projects such as tunnel support, slope reinforcement, and mine roadways, making them an indispensable admixture in shotcrete construction. Accelerators are generally produced using a reaction vessel.

[0003] CN221386443U discloses an alkali-free quick-setting agent reactor. It uses stirring blades and vertical plates set on the outer wall of the stirring shaft. During normal operation of the equipment, the stirring shaft will rotate under the action of the driving device. At this time, the stirring blades and vertical plates will rotate under the action of the stirring shaft. The stirring blades will play a stirring role in the material during the rotation.

[0004] Traditional accelerator production typically involves adding liquid raw materials first, followed by solid powder raw materials, and mixing them in a reactor. If the solid powder raw materials are clumped before mixing with the solution, they are prone to further clumping and settling upon contact with the solution, affecting the quality and production capacity of the accelerator. Therefore, a powder mixer is needed before adding the solid powder to disperse the powder and prevent clumping, resulting in relatively high equipment costs. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an alkali-free quick-setting agent reactor. This solves the problem that if solid powder raw materials agglomerate before being mixed with the solution, the powder will easily agglomerate further and settle to the bottom when in contact with the solution, affecting the quality and production capacity of the quick-setting agent. Therefore, a powder mixer needs to be installed before feeding in the solid powder to disperse the powder and avoid agglomeration, which leads to relatively high equipment costs.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides an alkali-free quick-setting agent reaction vessel, comprising:

[0008] The vessel body has a material inlet that connects to its internal cavity;

[0009] A stirring structure having a stirring part rotatably disposed in the inner cavity, the stirring part being used to stir materials; and

[0010] The feeding structure includes a receiving tray and a crushing part located in the inner cavity. One of the receiving tray and the crushing part is located in the stirring part, and the other is located in the vessel body. The receiving tray is located below the material inlet and is provided with a channel for the powder to fall. The crushing part is located above the receiving tray and crushes the powder on the receiving tray when it rotates relative to the receiving tray.

[0011] In some embodiments, the receiving tray is arranged circumferentially around the stirring section;

[0012] The pulverizing section includes a material-pushing blade located on one side of the rotation axis of the stirring section, which agitates the powder on the receiving plate when rotating relative to the receiving plate.

[0013] In some embodiments, the distance between the receiving tray and the feeding plate can be adjusted.

[0014] In some embodiments, the receiving tray is installed on the stirring section, and the vessel body is provided with mounting holes in a direction away from the receiving tray. The mounting holes are located above the receiving tray and communicate with the inner cavity.

[0015] The alkali-free quick-setting agent reactor also includes a connecting screw and two sets of connecting nuts. The connecting screw is movably inserted through the mounting hole, with one end extending into the inner cavity and connected to the material feeding plate. The two sets of connecting nuts are threadedly connected to the connecting screw and are located at both ends of the mounting hole.

[0016] In some embodiments, the receiving tray is inclined from its end edge to its center in a direction away from the feed inlet; and / or,

[0017] The channel is provided in multiple ways, and the multiple channels are spaced apart from the receiving tray.

[0018] In some embodiments, the alkali-free quick-setting agent reactor further includes a main infusion pipe, two branch infusion pipes, and two control valves. The main infusion pipe is connected to the two branch infusion pipes. One of the two branch infusion pipes extends above the receiving tray for conveying liquid toward the receiving tray, while the other is offset from the receiving tray. The two control valves are respectively located on the two branch infusion pipes.

[0019] In some embodiments, the alkali-free quick-setting agent reactor further includes a gas supply pipe, a one-way valve, and an air compressor. The gas supply pipe is connected to the liquid supply main pipe, the one-way valve is located on the gas supply pipe, and the air outlet of the air compressor is connected to the gas supply pipe.

[0020] In some embodiments, the infusion branch and the feed inlet are located on opposite sides of the stirring section in the radial direction.

[0021] In some embodiments, the stirring unit includes a stirring shaft and stirring blades, the stirring shaft being rotatably mounted on the vessel body and located in the inner cavity, and the stirring blades being mounted on the stirring shaft;

[0022] The stirring structure also includes a stirring motor, which is installed outside the vessel body and its output shaft is connected to the stirring shaft.

[0023] In some embodiments, the alkali-free quick-setting agent reactor further includes a heat exchange pipe that surrounds the outside of the reactor body and through which a heat exchange fluid flows.

[0024] Compared with the prior art, in the alkali-free quick-setting agent reactor provided by this utility model, the powder enters the inner cavity of the reactor body from the feed port and falls onto the receiving tray. Since one of the receiving tray and the crushing part is installed on the reactor body and the other is installed on the stirring part, when the stirring part is driven to rotate to stir the solution at the bottom of the reactor body, it can drive the receiving tray and the crushing part to rotate relative to each other, thereby enabling the crushing part to crush the powder on the receiving tray. The crushed powder goes down through the channel and finally enters the solution at the bottom of the reactor body, and is uniformly mixed with the solution under the stirring of the stirring part.

[0025] Thus, this solution can simultaneously drive the pulverizing unit and the receiving plate to rotate relative to each other while stirring the solution at the bottom of the vessel through the stirring unit, thereby pulverizing the powder. This allows the powder to be pulverized and stirred with the solution at the bottom through a single drive mechanism, eliminating the need for a separate stirring mechanism to pulverize the powder, reducing equipment costs, and preventing the powder from clumping before mixing with the solution, thereby improving the quality and production capacity of the accelerator. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the alkali-free quick-setting agent reactor provided in an embodiment of this utility model;

[0027] Figure 2 yes Figure 1 A partial schematic diagram of the reactor for the alkali-free quick-setting agent;

[0028] Figure 3 yes Figure 1 Top view of the intermediate receiving tray;

[0029] Figure 4 yes Figure 1 A schematic diagram of the mixing section, receiving tray, and feeding disc.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Kettle body; 1a. Inner cavity; 1b. Feed inlet; 2. Stirring section; 21. Stirring shaft; 22. Stirring blades; 3. Receiving tray; 3a. Channel; 4. Crushing section; 41. Feeding disc; 5. Connecting screw; 6. Main infusion pipe; 61. Branch infusion pipe; 611. First branch pipe; 612. Second branch pipe; 62. Control valve; 7. Gas infusion pipe; 71. Check valve; 72. Air compressor; 8. Stirring motor; 9. Heat exchange pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] To address the issue that existing technologies often result in clumping of solid powder raw materials before mixing with the solution, leading to further clumping and settling upon contact with the solution, thus affecting the quality and production capacity of the accelerator, a separate powder mixer is required before feeding the solid powder to disperse the powder and prevent clumping, resulting in relatively high equipment costs. This invention provides an alkali-free accelerator reactor that uses a single drive mechanism to pulverize the powder and stir the solution at the bottom, eliminating the need for a separate stirring mechanism, reducing equipment costs, preventing clumping before mixing, and improving the quality and production capacity of the accelerator.

[0034] Please see Figures 1 to 3 , Figures 1 to 3 This is a schematic diagram of the structure of an alkali-free quick-setting agent reactor according to an embodiment of the present invention. The alkali-free quick-setting agent reactor includes a reactor body 1, a stirring structure, and a feeding structure. The reactor body 1 has a material inlet 1b communicating with its inner cavity 1a. The stirring structure has a stirring part 2 rotatably disposed in the inner cavity 1a. The stirring part 2 is used to stir the material, and its rotation axis is arranged in the vertical direction. The feeding structure includes a receiving plate 3 and a crushing part 4 located in the inner cavity 1a. One of the receiving plate 3 and the crushing part 4 is disposed in the stirring part 2, and the other is disposed in the reactor body 1. The receiving plate 3 is located below the material inlet 1b and is provided with a channel 3a for the powder to fall. The crushing part 4 is located above the receiving plate 3 and crushes the powder on the receiving plate 3 when rotating relative to the receiving plate 3.

[0035] In the alkali-free quick-setting agent reactor provided by this utility model, the powder enters the inner cavity 1a of the reactor body 1 from the feed port 1b and falls onto the receiving tray 3. Since one of the receiving tray 3 and the crushing part 4 is installed on the reactor body 1 and the other is installed on the stirring part 2, when the stirring part 2 is driven to rotate to stir the solution at the bottom of the reactor body 1, it can drive the receiving tray 3 and the crushing part 4 to rotate relative to each other, thereby enabling the crushing part 4 to crush the powder on the receiving tray 3. The crushed powder goes down through the channel 3a and finally enters the solution at the bottom of the reactor body 1, and is uniformly mixed with the solution under the stirring of the stirring part 2.

[0036] Thus, this solution can simultaneously drive the pulverizing unit 4 and the receiving plate 3 to rotate relative to each other while stirring the solution at the bottom of the vessel body 1 through the stirring unit 2, so as to pulverize the powder. This allows the powder to be pulverized and the bottom solution to be stirred through a single drive mechanism, eliminating the need for a separate stirring mechanism to pulverize the powder, reducing equipment costs, and preventing the powder from clumping before mixing with the solution, thereby improving the quality and production capacity of the accelerator.

[0037] It should be noted that the vessel body 1 can be configured as a barrel, a mixing tank, or a mixing pool. Furthermore, the pulverizing section 4 can be configured as a pulverizing blade, a pulverizing paddle, or other forms.

[0038] In one embodiment, the receiving tray 3 is arranged around the circumference of the stirring section 2; the crushing section 4 includes a material-pushing blade 41, which is located on one side of the rotation axis of the stirring section 2 and pushes the powder on the receiving tray 3 when rotating relative to the receiving tray 3.

[0039] In this embodiment, the receiving tray 3 and the material-pushing blade 41 are arranged as described above, so that the material-pushing blade 41 can continuously push the material on the receiving tray 3 when rotating relative to the receiving tray 3, thereby improving the crushing ability and efficiency of the powder. The structure is simple and the cost is low.

[0040] It should be noted that, in order to ensure that the powder falls evenly into the solution at the bottom of the reactor body 1, the receiving tray 3 has multiple channels 3a, which are arrayed on the receiving tray 3. In addition, in one embodiment, an upward-opening fan-shaped flap is reserved on the receiving tray 3 for later cleaning and maintenance of the reactor.

[0041] In one embodiment, the distance between the receiving tray 3 and the feeding plate 41 is adjustable.

[0042] In this embodiment, the distance between the receiving tray 3 and the feeding plate 41 can be adjusted according to the needs to adapt to powders of different particle sizes and improve practicality.

[0043] It should be noted that the distance between the receiving tray 3 and the material feeding plate 41 can be adjusted so that one of them can move closer to or further away from the other, or both can move towards or away from each other.

[0044] In one embodiment, the receiving tray 3 is installed on the stirring section 2, and the vessel body 1 is provided with a mounting hole in the direction away from the receiving tray 3. The mounting hole is located above the receiving tray 3 and communicates with the inner cavity 1a. The alkali-free quick-setting agent reactor also includes a connecting screw 5 and two sets of connecting nuts (not shown). The connecting screw 5 is movably inserted through the mounting hole, and one end extends into the inner cavity 1a and is connected to the material feeding plate 41. The two sets of connecting nuts are threadedly connected to the connecting screw 5 and are located at both ends of the mounting hole.

[0045] In this embodiment, by adjusting the positions of the two sets of connecting nuts, the length of the connecting screw 5 extending into the inner cavity 1a is adjusted, thereby adjusting the distance between the material feeding plate 41 and the receiving plate 3. The structure is simple and reliable. It should be noted that in this solution, there are two connecting screws 5, and correspondingly, each connecting screw 5 is provided with two sets of connecting nuts.

[0046] It should be understood that, in order to facilitate the operator to adjust the connecting nut inside the vessel body 1, the vessel body 1 is provided with an openable and closable cover. In one embodiment, the mounting hole is on the cover.

[0047] In one embodiment, the receiving tray 3 is inclined from the end edge to the middle in a direction away from the feed port 1b.

[0048] In this embodiment, the receiving tray 3 is configured as a conical tray, which allows the conical tray to hold as much material as possible and prevents the material from falling directly from above the receiving tray 3. Correspondingly, the material feeding plate 41 has an inclined surface corresponding to the receiving tray 3.

[0049] In one embodiment, the alkali-free quick-setting agent reactor also includes a main infusion pipe 6, two branch infusion pipes 61 and two control valves 62. The main infusion pipe 6 is connected to the two branch infusion pipes 61. One of the two branch infusion pipes 61 extends above the receiving tray 3 for conveying liquid toward the receiving tray 3, and the other is offset from the receiving tray 3. The two control valves 62 are respectively located on the two branch infusion pipes 61.

[0050] In this embodiment, for ease of description, the liquid delivery branch pipe 61 facing the receiving tray 3 and the control valve 62 are defined as the first branch pipe 611 and the first valve, and the liquid delivery branch pipe 61 and the control valve 62 offset from the receiving tray 3 are defined as the second branch pipe 612 and the second valve. During the synthesis of the quick-setting agent, the first valve is closed and the second valve is opened, allowing water to enter the reactor body 1 through the second branch pipe 612 into the offset receiving tray 3, so as to avoid wetting the receiving tray 3 and affecting the feeding of the powder raw materials. After the powder raw materials are fed, the first valve is opened, so that the liquid can fall onto the receiving tray 3 through the first branch pipe 611, and can be evenly fed into the reactor through the receiving tray 3, and wash away the residual powder on the receiving tray 3 and the feeding plate 41.

[0051] It should be noted that the inner wall of the reactor and the pipes are all coated with a corrosion-resistant coating.

[0052] In one embodiment, the alkali-free quick-setting agent reactor also includes a gas supply pipe 7, a one-way valve 71, and an air compressor 72. The gas supply pipe 7 is connected to the liquid supply main pipe 6, the one-way valve 71 is located on the gas supply pipe 7, and the outlet end of the air compressor 72 is connected to the gas supply pipe 7.

[0053] In this embodiment, the compressed gas from the air compressor 72 can clear residual liquid in the pipeline and accelerate liquid feeding. It should be understood that the one-way valve 71 allows compressed air to enter the main liquid supply pipe 6 and prevents liquid from entering the gas supply pipe 7. Its specific structure and principle are existing technologies and will not be described in detail here.

[0054] In one embodiment, the infusion branch 61 and the feed port 1b are located on opposite sides of the stirring section 2 in the radial direction.

[0055] In this embodiment, the infusion branch pipe 61 and the feed port 1b are staggered to avoid interference between them and affect the powder crushing. The structure layout is reasonable and improves the compactness of the device.

[0056] It should be noted that the stirring unit 2 can be configured as a stirring paddle, stirring arm or other forms.

[0057] In one embodiment, please refer to Figure 4 The stirring part 2 includes a stirring shaft 21 and stirring blades 22. The stirring shaft 21 is rotatably mounted on the vessel body 1 and located in the inner cavity 1a. The stirring blades 22 are mounted on the stirring shaft 21. The stirring structure also includes a stirring motor 8, which is mounted outside the vessel body 1 and its output shaft is connected to the stirring shaft 21.

[0058] In this embodiment, the solution at the bottom of the vessel 1 is stirred by the stirring blades 22. Specifically, in this design, there are two sets of stirring blades 22, forming a two-stage spiral stirring blade group 22. The two-stage spiral stirring blade groups 22 are spaced apart along the axial direction of the stirring shaft 21. Each stage of the spiral stirring blade group 22 adopts a 120° included angle three-blade design and faces each other. This allows the upper spiral stirring blade group 22 to stir the liquid to sink, while the lower spiral stirring blade group 22 stirs the liquid to rise, forming turbulence and improving the turbulence capacity. This accelerates the mixing efficiency of solid powder raw materials and liquid raw materials, effectively reduces the possibility of solid powder raw materials settling to the bottom, thereby improving reaction efficiency and product stability.

[0059] In one embodiment, the alkali-free quick-setting agent reactor also includes a heat exchange pipe 9, which surrounds the outside of the reactor body 1 and contains a heat exchange fluid.

[0060] In this embodiment, the fluid temperature in the heat exchange pipe 9 is adjusted to exchange heat with the vessel 1, thereby adjusting the reaction temperature inside the vessel 1 and ensuring that the material inside the vessel 1 is at the optimal reaction temperature. Specifically, the heat exchange fluid circulation can be achieved through a pump and an adjustment structure; the specific structure and principle of this method are existing technologies and will not be elaborated here.

[0061] To better understand this utility model, the following is combined with... Figures 1 to 4 The technical solution of this utility model is described in detail below:

[0062] The reaction process in this scheme is as follows: First, water is introduced into the inner cavity 1a of the vessel 1 via the second branch pipe 612, with most of the water pre-added and 50-100 kg reserved for final rinsing. Then, powder is fed into the receiving tray 3 via the feed port 1b, and the stirring shaft 21 is rotated by the stirring motor 8. The receiving tray 3 rotates with the stirring shaft 21, allowing the material-dispensing blade 41 to crush the raw material clumps on the receiving tray 3. The crushed material falls evenly from the multiple channels 3a on the receiving tray 3. Next, other liquids are introduced into the receiving tray 3 via the first branch pipe 611 to rinse the receiving tray 3 and the material-dispensing blade 41, while the material is being added. Finally, the reserved water is supplied to the receiving tray 3 via the first branch pipe 611 to rinse the pipes, receiving tray 3, and material-dispensing blade 41 a second time to reduce residue.

[0063] Specifically, the conical receiving plate 3 is a key component for dispersing solid powder raw materials. The receiving plate 3 is densely covered with circular holes 3a to achieve uniform dispersion of solid powder. The material feeding plate 41 can adjust the distance between itself and the feeding plate through the connecting screw 5 to crush lumps in the raw materials and assist in feeding.

[0064] Furthermore, the air compressor 72 assists in increasing the feeding speed of liquid raw materials, clearing liquid residue from the pipeline, enhancing the dispersion of liquid raw materials, improving the efficiency of rinsing the receiving tray 3 and the material feeding plate 41, and drying the moisture in the receiving tray 3 and the material feeding plate 41 for use in the next batch. The one-way valve 71 at the top of the air supply pipe 7 is designed to prevent liquid raw materials from flowing back into the air compressor 72, affecting equipment operation and feeding accuracy. It can also uniformly control the reaction temperature in each area of ​​the reactor through the heat exchange pipe 9, improving temperature control efficiency.

[0065] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A reaction vessel without alkali-based quick-setting agent, characterized in that, include: The vessel body has a material inlet that connects to its internal cavity; A stirring structure having a stirring part rotatably disposed in the inner cavity, the stirring part being used to stir materials; and The feeding structure includes a receiving tray and a crushing part located in the inner cavity. One of the receiving tray and the crushing part is located in the stirring part, and the other is located in the vessel body. The receiving tray is located below the material inlet and is provided with a channel for the powder to fall. The crushing part is located above the receiving tray and crushes the powder on the receiving tray when it rotates relative to the receiving tray.

2. The alkali-free quick-setting agent reactor according to claim 1, characterized in that, The receiving tray is arranged circumferentially around the stirring section; The pulverizing section includes a material-pushing blade located on one side of the rotation axis of the stirring section, which agitates the powder on the receiving plate when rotating relative to the receiving plate.

3. The alkali-free quick-setting agent reactor according to claim 2, characterized in that, The distance between the receiving tray and the feeding plate is adjustable.

4. The alkali-free quick-setting agent reactor according to claim 3, characterized in that, The receiving tray is installed on the stirring part, and the vessel body is provided with mounting holes along the direction away from the receiving tray. The mounting holes are located above the receiving tray and communicate with the inner cavity. The alkali-free quick-setting agent reactor also includes a connecting screw and two sets of connecting nuts. The connecting screw is movably inserted through the mounting hole, with one end extending into the inner cavity and connected to the material feeding plate. The two sets of connecting nuts are threadedly connected to the connecting screw and are located at both ends of the mounting hole.

5. The alkali-free quick-setting agent reactor according to claim 2, characterized in that, The receiving tray is inclined from its end edge to its center in a direction away from the material inlet; and / or The channel is provided in multiple ways, and the multiple channels are spaced apart from the receiving tray.

6. The alkali-free quick-setting agent reactor according to claim 1, characterized in that, The alkali-free quick-setting agent reactor also includes a main infusion pipe, two branch infusion pipes, and two control valves. The main infusion pipe is connected to the two branch infusion pipes. One of the two branch infusion pipes extends above the receiving tray to deliver liquid toward the receiving tray, while the other is offset from the receiving tray. The two control valves are respectively located on the two branch infusion pipes.

7. The alkali-free quick-setting agent reactor according to claim 6, characterized in that, The alkali-free quick-setting agent reactor also includes a gas supply pipe, a one-way valve, and an air compressor. The gas supply pipe is connected to the liquid supply main pipe, the one-way valve is located on the gas supply pipe, and the air outlet of the air compressor is connected to the gas supply pipe.

8. The alkali-free quick-setting agent reactor according to claim 6, characterized in that, The infusion branch pipe and the feed inlet are located on opposite sides of the stirring section in the radial direction.

9. The alkali-free quick-setting agent reactor according to claim 1, characterized in that, The stirring unit includes a stirring shaft and stirring blades. The stirring shaft is rotatably mounted on the vessel body and located in the inner cavity. The stirring blades are mounted on the stirring shaft. The stirring structure also includes a stirring motor, which is installed outside the vessel body and its output shaft is connected to the stirring shaft.

10. The alkali-free quick-setting agent reactor according to claim 1, characterized in that, The alkali-free quick-setting agent reactor also includes a heat exchange pipe, which surrounds the outside of the reactor body and contains a heat exchange fluid.

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