Dry powder curing device and method
By designing the dredging components and agitating paddles in the dry powder curing device, the dual guarantees of water flow flushing and mechanical dredging are solved, and the problem of hydration reaction between cement dust and water vapor outside the barrel is reduced, and the chance of plate bonding is ensured to ensure the normal progress of the curing process.
Patent Information
- Application Number
- CN202411963273.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-04
AI Technical Summary
In the prior art, during the cement curing process of medium and low-level evaporation residue, dry powder and water vapor undergo hydration reaction on the top of the mixer outside the barrel, forming cement blocks, resulting in the top plate bonding and being unable to enter the barrel.
A dry powder curing device is designed, including a curing barrel, a dredging assembly and a stirring paddle. By installing a waste liquid discharge pipe at the lower end of the cement discharge pipe, the double guarantee of water flow flushing and mechanical dredging is used to avoid dry powder residues, and the production of cement dust is reduced by extending the dredging rod.
It effectively reduces the chance of cement board on the top of the agitator, ensures that the dry powder and waste liquid can enter the curing barrel smoothly, and achieves the normal progress of the curing process.
Smart Images
Figure CN119550474A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of radioactive waste management and dredging, and specifically relates to a dry powder solidification device and method. Background Art
[0002] At present, when treating medium and low-level steam residues for cement solidification, the process of solidification in the mixing drum outside the drum is generally adopted. However, cement dust generated during the feeding process of dry powder and water vapor generated during high-pressure cleaning react with each other at the top of the mixing drum outside the drum to form cement blocks, causing the top to harden, making it impossible for the dry powder and the actuator of the high-pressure cleaning device to enter the mixing drum outside the drum. Summary of the invention
[0003] The purpose of the present application is to provide a dry powder solidification device and method to solve the problem in the prior art that cement dust and water vapor generated during high-pressure cleaning react with each other at the top of the mixing agitator outside the barrel to form cement blocks, causing top hardening.
[0004] Technical solution to achieve the purpose of this application:
[0005] A first aspect of an embodiment of the present application provides a dry powder solidification device, the device comprising: a solidification barrel, a dredging component and a stirring paddle;
[0006] The upper end of the curing barrel is equipped with the dredging assembly through the cement discharge pipeline; the cement discharge pipeline is connected to the dry powder discharge pipe and the waste liquid discharge pipe; the interface of the waste liquid discharge pipe is located at the lower end of the dry powder discharge pipe interface;
[0007] The dredging assembly comprises a transmission shaft, an extension rod and a distribution plate;
[0008] The lower end of the transmission shaft is connected to the distribution plate through an extension rod, so as to clear the cement feeding pipeline;
[0009] The stirring paddle is arranged at the lower end of the curing barrel and is used for mixing the materials in the curing barrel.
[0010] Optionally, the distribution plate is conical in shape, and an extension rod is used to bring the distribution plate close to the interface of the slurry being stirred by the stirring paddle.
[0011] Optionally, a sealing plug is provided at the lower end of the transmission shaft.
[0012] Optionally, the center cone of the stirring paddle is raised.
[0013] Optionally, the inclination angle of the stirring paddle blade is greater than a preset threshold value to reduce dry powder remaining on the paddle blade.
[0014] A second aspect of the embodiment of the present application provides a dry powder curing method, which is applied to any one of the dry powder curing devices provided in the first aspect of the embodiment of the present application; the method comprises:
[0015] Control the dredging component to descend from the blocking position to the cleaning position, and add a portion of the waste liquid into the curing barrel through the waste liquid discharge pipe;
[0016] Controlling the stirring paddle to rotate at a first speed;
[0017] Control the dredging component to rise from the cleaning position to the ash discharging position, and add dry powder into the curing barrel through the dry powder discharging pipe; the dry powder and the waste liquid are mixed and then solidified;
[0018] The dredging component is controlled to descend from the ash lowering position to the cleaning position, and the remaining waste liquid is added.
[0019] Optionally, the step of adding dry powder into the curing barrel through the dry powder feeding pipe further comprises:
[0020] According to the amount of dry powder added, the speed of the stirring paddle is gradually increased.
[0021] Optionally, the controlling the dredging component to descend from the ash lowering position to the cleaning position and adding the remaining waste liquid further comprises:
[0022] After curing is completed, the unblocking component is raised from the cleaning position to the blocking position.
[0023] Optionally, the portion of waste liquid is 3 / 4 of the target waste liquid amount.
[0024] The beneficial technical effects of this application are:
[0025] The embodiment of the present application provides a dry powder solidification device and method, which includes: a solidification barrel, a dredging assembly and a stirring paddle; the upper end of the solidification barrel is installed with the dredging assembly through a cement discharge pipeline; the cement discharge pipeline is connected with a dry powder discharge pipe and a waste liquid discharge pipe; the interface of the waste liquid discharge pipe is located at the lower end of the dry powder discharge pipe interface; the dredging assembly includes a transmission shaft, an extension rod and a distribution plate; the lower end of the transmission shaft is connected to the distribution plate through an extension rod, which is used to dredge the cement discharge pipeline; the stirring paddle is arranged at the lower end of the solidification barrel, which is used to mix the materials in the solidification barrel. The embodiment of the present application reduces the cement dust generated by the dredging rod by extending the dredging rod, and reduces the probability of cement caking on the top of the agitator; by adding a waste liquid discharge pipe at the lower end of the dry powder discharge pipe, the dry powder residue in the cement discharge pipeline is avoided through the dual protection of water flushing and mechanical dredging. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1A schematic structural diagram of a dry powder curing device provided in an embodiment of the present application;
[0027] Figure 2 A schematic structural diagram of another dry powder curing device provided in an embodiment of the present application;
[0028] Figure 3 A schematic diagram of a blocking position in a dry powder curing method provided in an embodiment of the present application;
[0029] Figure 4 A schematic diagram of a cleaning position in a dry powder curing method provided in an embodiment of the present application;
[0030] Figure 5 A schematic diagram of the lower ash position in a dry powder solidification method provided in an embodiment of the present application.
[0031] In the figure:
[0032] 1-curing barrel; 2-transmission shaft; 3-stirring paddle; 4-dry powder discharge pipe; 5-waste liquid discharge pipe; 6-extension rod; 7-distribution plate; 8-sealing plug. DETAILED DESCRIPTION
[0033] In order to make those skilled in the art better understand the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, not all. Based on the embodiments recorded in the present application, all other embodiments obtained by those skilled in the art without paying creative work are within the scope of protection of the present application.
[0034] See also Figure 1 , which is a structural schematic diagram of a dry powder solidification device provided in an embodiment of the present application.
[0035] A dry powder curing device provided in an embodiment of the present application includes: a curing barrel 1, a dredging component and a stirring paddle 3;
[0036] The upper end of the curing barrel 1 is installed with the dredging assembly through the cement discharge pipeline; the cement discharge pipeline is connected to the dry powder discharge pipe 4 and the waste liquid discharge pipe 5; the interface of the waste liquid discharge pipe 5 is located at the lower end of the interface of the dry powder discharge pipe 4;
[0037] The dredging assembly comprises a transmission shaft 2, an extension rod 6 and a distribution plate 7;
[0038] The lower end of the transmission shaft 2 is connected to the distribution plate 7 through an extension rod 6, which is used to dredge the cement feeding pipeline;
[0039] The stirring paddle 3 is arranged at the lower end of the curing barrel 1 and is used for mixing the materials in the curing barrel 1 .
[0040] It should be noted that, because the stirring paddle 3 is at the bottom of the curing barrel 1, the distribution plate 7 is moved as close to the interface of the mortar being stirred as possible by extending the rod 6, thereby reducing the influence of gravity on the splashing of the dry powder, making the mortar evenly distributed at the bottom of the curing barrel 1, and ensuring that the waste liquid can be washed to the bottom of the curing barrel 1. In the embodiment of the present application, the cement dust generated by the descent of the dry powder is reduced by extending the rod 6, and the probability of cement caking at the top of the agitator is reduced.
[0041] Compared with the prior art, the embodiment of the present application connects the waste liquid discharge pipe 5 and the dry powder discharge pipe 4 to form a waste liquid and dry powder discharge inclined pipe tee. The waste liquid and dry powder discharge inclined pipe tee discharges the waste liquid and dry powder into the curing barrel 1 from the same discharge pipe. Due to the different heights of the waste liquid inlet and the dry powder inlet, a waste liquid discharge pipe 5 is added to the lower end of the dry powder discharge pipe 4 to allow the waste liquid to flush the cement discharge pipe wall again. The dual protection of water flushing and mechanical dredging avoids the residue of dry powder in the cement discharge pipeline.
[0042] In some possible implementations of the embodiment of the present application, the distribution plate 7 may be conical, and the distribution plate 7 is brought close to the slurry interface being stirred by the stirring paddle 3 by using the extension rod 6 .
[0043] In the prior art, the drill assembly is a solid disc with a diameter consistent with the pipe. When the closed-cell sponge rubber does not block the cement feeding pipe, the residual cement will fall to the back of the drill assembly and accumulate. To this end, the embodiment of the present application adopts a conical distribution plate 7, so that the residual cement can enter the interior of the curing barrel 1 through gravity and the impact force of the waste liquid.
[0044] In one example, a sealing plug 8 is provided at the lower end of the transmission shaft 2 to prevent the reverse flow of dry powder and waste liquid.
[0045] In some possible implementations of the embodiments of the present application, the central cone of the stirring paddle 3 is raised to increase the height of the central cone of the stirring paddle 3, thereby increasing the inclination angle of the central cone of the stirring paddle 3, so that the dry powder can be effectively mixed into the mortar under the action of gravity and centrifugal force.
[0046] In some possible implementations of the embodiments of the present application, the inclination angle of the blades of the stirring paddle 3 is greater than a preset threshold value to reduce the dry powder remaining on the blades.
[0047] In the embodiment of the present application, the inclination angle of the paddle body is increased so that during the operation of the stirring paddle 3, the dry powder remaining on the paddle can be fully mixed with the surrounding slurry under the action of gravity and centrifugal force.
[0048] A dry powder solidification device provided in an embodiment of the present application includes: a solidification barrel, a dredging assembly and a stirring paddle; the upper end of the solidification barrel is installed with the dredging assembly through a cement discharge pipeline; the cement discharge pipeline is connected with a dry powder discharge pipe and a waste liquid discharge pipe; the interface of the waste liquid discharge pipe is located at the lower end of the interface of the dry powder discharge pipe; the dredging assembly includes a transmission shaft, an extension rod and a distribution plate; the lower end of the transmission shaft is connected to the distribution plate through an extension rod, which is used to dredge the cement discharge pipeline; the stirring paddle is arranged at the lower end of the solidification barrel, which is used to mix the materials in the solidification barrel. The embodiment of the present application reduces the cement dust generated by the dredging rod by extending the dredging rod, and reduces the probability of cement caking on the top of the agitator; by adding a waste liquid discharge pipe at the lower end of the dry powder discharge pipe, the dry powder residue in the cement discharge pipeline is avoided through the dual protection of water flushing and mechanical dredging.
[0049] Based on a dry powder curing device provided in the above embodiment, an embodiment of the present application further provides a dry powder curing method, which is applied to any one of the dry powder curing methods provided in the above embodiment.
[0050] A dry powder curing method provided in an embodiment of the present application includes:
[0051] Step S101: controlling the dredging component to descend from the blocking position to the cleaning position, and adding a portion of waste liquid into the curing barrel 1 through the waste liquid discharge pipe 5;
[0052] Step S102: Control the stirring paddle 3 to rotate at a first speed;
[0053] Step S103: Control the dredging assembly to rise from the cleaning position to the ash discharging position, and add dry powder to the curing barrel 1 through the dry powder discharging pipe 4; the dry powder and the waste liquid are mixed and then solidified;
[0054] Step S104: Control the dredging component to descend from the ash lowering position to the cleaning position, and add the remaining waste liquid.
[0055] Figure 3 An example is shown of a schematic diagram of the dredging component in a blocking position; Figure 4 A schematic diagram of the dredging assembly in a cleaning position is shown; Figure 3An example is shown of a schematic diagram of the dredging component in the ash lowering position. As can be seen from the figure, in the blocking position, the distribution plate 7 is located at the entrance of the curing barrel 1 to block the curing barrel 1. In the cleaning position, the sealing plug 8 is located between the interface of the waste liquid discharge pipe 5 and the interface of the dry powder discharge pipe 4, so that the waste liquid discharge pipe 5 can enter the curing barrel 1, but the dry powder cannot enter the curing barrel 1. The distribution plate 7 is close to the interface of the mortar being stirred, thereby reducing the effect of gravity on the splashing of the dry powder, so that the mortar is evenly distributed at the bottom of the curing barrel 1, ensuring that the waste liquid can be flushed to the bottom of the curing barrel 1. In the ash lowering position, the sealing plug 8 is located at the upper end of the interface of the dry powder discharge pipe 4, so that the dry powder can enter the curing barrel 1.
[0056] In the prior art, the speed of the lifting motor is low, and during the entire unloading process, the device can only complete a one-way operation from the upper limit to the lower limit. In the embodiment of the present application, the motor speed is increased, the single operation time is shortened, the operation frequency of the dredging device is increased, and the operation mode is optimized to ensure that after each cement unloading is completed, two reciprocating pipeline dredgings can be completed.
[0057] In some possible implementations of the embodiment of the present application, step S103 may further include:
[0058] According to the amount of dry powder added, the rotation speed of the stirring paddle 3 is gradually increased.
[0059] In some possible implementations of the embodiments of the present application, step S104 may further include:
[0060] After curing is completed, the unblocking component is raised from the cleaning position to the blocking position.
[0061] In one example, the portion of waste liquid is ¾ of the target waste liquid amount.
[0062] This application implements the method of increasing the motor speed, shortening the single operation time, increasing the operation frequency of the dredging device, optimizing the operation mode, and ensuring that two reciprocating pipeline dredgings can be completed after each cement feeding is completed.
[0063] The present application is described in detail above in conjunction with the accompanying drawings and embodiments, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present application. Any content not described in detail in the present application can adopt the existing technology.
Claims
1. A dry powder curing device, characterized in that: The device comprises: a curing barrel (1), a dredging component and a stirring paddle (3); The upper end of the curing barrel (1) is equipped with the dredging assembly via a cement discharge pipeline; the cement discharge pipeline is connected to a dry powder discharge pipe (4) and a waste liquid discharge pipe (5); the interface of the waste liquid discharge pipe (5) is located at the lower end of the interface of the dry powder discharge pipe (4); The dredging assembly comprises a transmission shaft (2), an extension rod (6) and a distribution plate (7); The lower end of the transmission shaft (2) is connected to a distribution plate (7) via an extension rod (6) for clearing the cement feed pipe; The stirring paddle (3) is arranged at the lower end of the solidification barrel (1) and is used for mixing the materials in the solidification barrel (1).
2. The dry powder curing device according to claim 1, characterized in that: The distribution plate (7) is conical in shape, and the distribution plate (7) is moved close to the interface of the mortar being stirred by the stirring paddle (3) by using an extension rod (6).
3. The dry powder curing device according to claim 1, characterized in that: A sealing plug (8) is arranged at the lower end of the transmission shaft (2).
4. The dry powder curing device according to any one of claims 1 to 3, characterized in that: The central cone of the stirring paddle (3) is raised.
5. The dry powder curing device according to claim 4, characterized in that: The inclination angle of the blade of the stirring paddle (3) is greater than a preset threshold value so as to reduce the dry powder remaining on the blade.
6. A dry powder curing method, characterized in that: The dry powder curing device according to any one of claims 1 to 5; the method comprises: Control the dredging component to descend from the blocking position to the cleaning position, and add a portion of the waste liquid into the curing barrel (1) through the waste liquid discharge pipe (5); Controlling the stirring paddle (3) to rotate at a first speed; The unblocking component is controlled to rise from the cleaning position to the ash discharging position, and dry powder is added to the curing barrel (1) through the dry powder discharging pipe (4); the dry powder and the waste liquid are mixed and then solidified; The dredging component is controlled to descend from the ash lowering position to the cleaning position, and the remaining waste liquid is added.
7. The dry powder curing method according to claim 6, characterized in that: The step of adding dry powder into the curing barrel (1) through the dry powder feeding pipe (4) further comprises: According to the amount of dry powder added, the rotation speed of the stirring blade (3) is gradually increased.
8. The dry powder curing method according to claim 6, characterized in that: The controlling the dredging component to descend from the ash lowering position to the cleaning position and adding the remaining waste liquid, further comprising: After curing is completed, the unblocking component is raised from the cleaning position to the blocking position.
9. The dry powder curing method according to claim 6, characterized in that: The portion of waste liquid is 3 / 4 of the target waste liquid amount.