Non-contact blowing and scraping stirring device and stirring system
By using a non-contact purging and scraping stirring device, the inner wall of the reactor is cleaned using purging nozzles and inclined purging pipes, which solves the problem of severe wear of contact scrapers and achieves efficient cleaning and resource conservation.
Patent Information
- Application Number
- CN202422823008.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing methods of using contact scrapers to remove deposits from the inner wall of reactors result in severe wear, waste of resources, reduced cleaning effectiveness, and increased labor intensity.
A non-contact blowing and scraping stirring device is adopted. The inner wall of the reactor is blown by blowing nozzles set on the stirring frame. Combined with the inclined blowing pipe and check valve, the inner wall of the reactor is cleaned.
It improves the efficiency of cleaning the inner wall of the reactor, reduces resource waste and labor intensity, lowers the risk of material backflow and blockage, and enhances the cleaning effect.
Smart Images
Figure CN223542974U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of scraping off deposits on the inner wall of a reactor, and in particular to a non-contact purging and scraping stirring device and stirring system. Background Technology
[0002] A purging and scraping agitator is a rotary device installed inside a reaction vessel in industrial production to clean the inner wall of the vessel. In some industrial processes, the materials inside the reaction vessel exhibit high viscosity, are prone to crystallization, and easily form a skin. This leads to the formation of an adhesion layer on the inner wall of the reaction vessel after prolonged production. In severe cases, this affects heat transfer efficiency, and the detached adhesion layer can clog discharge pipes and even affect product quality. To prevent the formation of this adhesion layer on the inner wall of the reaction vessel, a purging and scraping agitator is installed inside to continuously scrape and clean the inner wall.
[0003] Existing scraping and stirring devices mainly utilize a hard material scraper to contact the inner wall of the reactor and generate friction force to remove the deposits adhering to the inner wall. However, this contact scraping method causes great wear and tear on the scraper, which not only wastes resources but also gradually reduces the scraping effect of the scraper on the reactor. If the scraper is not replaced in time, a layer that is difficult to scrape off can easily form on the inner wall of the reactor, increasing the labor intensity of subsequent cleaning of the inner wall of the reactor. Based on this, the inventors have developed a non-contact blowing and scraping stirring device. Summary of the Invention
[0004] To address the aforementioned technical problems, this application provides a non-contact purging and scraping stirring device and stirring system. This stirring device uses a non-contact purging method, with purging nozzles mounted on the stirring frame, to purge the inner wall of the reactor, thereby replacing the existing contact scraper method for cleaning the inner wall of the reactor. This not only greatly improves the cleaning efficiency of the inner wall of the reactor but also reduces resource waste and lowers the labor intensity of replacing the scraper.
[0005] Firstly, this application provides a non-contact blowing and scraping stirring device, which adopts the following technical solution:
[0006] A non-contact blowing and scraping stirring device, comprising:
[0007] Reactor;
[0008] The stirring shaft has a hollow internal flow channel and is rotatably connected to the reactor and suspended inside the reactor.
[0009] The stirring rack has a hollow internal flow channel, is fixed to the bottom of the stirring shaft and communicates with the inside of the stirring shaft, and forms a gap between its edge and the inner wall of the reactor; and
[0010] The purging nozzle is mounted on the stirring rack and located between the stirring rack and the inner wall of the reactor. It is connected to the inside of the stirring rack and is used to purge the inner wall of the reactor.
[0011] Preferably, it also includes a purge pipe disposed on the stirring rack, the purge pipe being located between the stirring rack and the inner wall of the reactor, the purge nozzle being disposed inside the purge pipe, and a purge port being provided at the end of the purge pipe away from the stirring rack.
[0012] Preferably, the purge pipe and the stirring frame are inclined together, and the included angle between the purge pipe and the stirring frame is in the range of 30 degrees to 60 degrees.
[0013] Preferably, the angle between the purge tube and the stirring rack is 45 degrees.
[0014] Preferably, a check valve for preventing backflow and sealing the purge port is hinged to the side of the purge pipe away from the agitator, and the hinged end of the check valve to the agitator is located above the purge port.
[0015] Preferably, a check valve for preventing backflow and sealing the purge port is hinged to the side of the purge pipe away from the stirring frame. The hinged end of the check valve and the stirring frame is located below the purge port, and a torsion spring is connected between the check valve and the purge pipe.
[0016] Preferably, the stirring shaft is rotatably connected to the reactor via a bearing, and a rotary joint is connected to the top of the stirring shaft. The reactor is provided with a support base, and the stirring shaft is provided with a support protrusion located above the support base.
[0017] Secondly, the non-contact blowing and scraping stirring device provided in this application adopts the following technical solution:
[0018] A stirring system comprising the aforementioned non-contact blowing and scraping stirring device, further comprising:
[0019] A viscosity meter is installed on the reactor to monitor the kinematic viscosity data of the materials inside the reactor in real time.
[0020] The kinematic viscosity preset module is used to preset the kinematic viscosity alarm threshold of materials;
[0021] The judgment module is used to determine the magnitude of the kinematic viscosity data and the kinematic viscosity alarm threshold, and output the judgment result;
[0022] The control module, electrically connected to the viscosity meter, is used to control the opening and closing of the purging and scraping stirring device based on the judgment result output by the judgment module.
[0023] In summary, this application includes the following beneficial technical effects:
[0024] 1. This stirring device uses a non-contact purging method, with purging nozzles mounted on the stirring frame, to purge the inner wall of the reactor, thus replacing the existing contact scraper method for cleaning the inner wall of the reactor. This not only greatly improves the cleaning efficiency of the inner wall of the reactor but also reduces resource waste and lowers the labor intensity of replacing scrapers.
[0025] 2. This application reduces the risk of material backflow into the purge pipe and purge valve by installing a check valve on the purge pipe when cleaning the inner wall of the reactor during material stirring.
[0026] 3. This application greatly improves the purging efficiency of the purging valve on the inner wall of the reactor by tilting the purging valve and the stirring rack support. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of the stirring device in the embodiments of this application.
[0028] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.
[0029] Figure 3 This is a schematic diagram of the structure in which the purge pipe and the stirring rack are inclined in an embodiment of this application.
[0030] Figure 4 This is a schematic diagram of the structure in this application embodiment where the hinged end of the check valve and the purge pipe is located above the purge port.
[0031] Figure 5 This is a schematic diagram of the structure in this application embodiment where the hinged end of the check valve and the purge pipe is located below the purge port.
[0032] Figure 6 This is a system diagram of the stirring system in the embodiments of this application.
[0033] Explanation of reference numerals in the attached drawings: 11. Reactor; 12. Stirring shaft; 121. Support protrusion; 13. Stirring frame; 14. Purge nozzle; 15. Rotary joint; 16. Bearing; 17. Support base; 18. Purge pipe; 181. Purge port; 19. Check valve; 20. Torsion spring; 100. Viscometer; 200. Kinematic viscosity preset module; 300. Judgment module; 400. Control module. Detailed Implementation
[0034] The present application will be further described in detail below with reference to the accompanying drawings.
[0035] This application discloses a non-contact blowing and scraping stirring device.
[0036] Reference Figures 1 to 3 The purging and scraping stirring device includes a reaction vessel 11, a stirring shaft 12, a stirring frame 13, and a purging nozzle 14.
[0037] Reference Figure 1 The reaction vessel 11 is a sealed reaction vessel for stirring. The reaction vessel 11 is set in a vertical direction, and the bottom of the reaction vessel 11 can be supported by a bracket.
[0038] Reference Figure 1 and Figure 2 A stirring shaft 12 extends vertically into the reactor 11. The interior of the stirring shaft 12 is a hollow flow channel, and a rotary joint 15 is connected to the top of the stirring shaft 12. The upper part of the stirring shaft 12 is rotatably connected to the reactor 11 via a bearing 16. A support base 17 is installed on the reactor 11, located below the bearing 16. The support base 17 can be installed on the reactor 11 via pins. A support protrusion 121 is formed on the outer wall of the stirring shaft 12. The support protrusion 121 can be a shoulder. The support protrusion 121 is located between the support base 17 and the bearing 16. The support base 17 supports the support protrusion 121, allowing the stirring shaft 12 to be suspended inside the reactor 11.
[0039] Reference Figure 1 and Figure 3 The stirring frame 13 is fixed to the bottom of the stirring shaft 12, and the interior of the stirring frame 13 is also a hollow flow channel. The stirring frame 13 is connected to the interior of the stirring shaft 12, so that gas or fluid can flow into the stirring frame 13 through the rotary joint 15 and the stirring shaft 12. The bottom and side ends of the stirring frame 13 form gaps with the inner wall of the reactor 11, so that the purging nozzles 14 on the stirring frame 13 can purge the inner wall of the reactor 11. The stirring frame 13 can adopt a plate-shaped U-shaped structure, two intersecting U-shaped structures, or other irregular structures.
[0040] The purge nozzle 14 is mounted on the stirring frame 13 and is located between the stirring frame 13 and the inner wall of the reactor 11. Specifically, in order to enable the purge nozzle 14 to better purge the inner wall of the reactor 11, a purge pipe 18 is also mounted on the stirring frame 13. The purge pipe 18 is located between the stirring frame 13 and the inner wall of the reactor 11 and is connected to the inside of the stirring frame 13. The purge nozzle 14 is installed inside the purge pipe 18, and a purge port 181 is opened at the end of the purge pipe 18 away from the stirring frame 13 so that the gas or fluid sprayed by the purge nozzle 14 can purge the inner wall of the reactor 11.
[0041] When purging the inner wall of the reactor 11, it can be done after the material in the reactor 11 has been stirred or during the stirring process. If it is done after the material in the reactor 11 has been stirred, there are no requirements for the gas or fluid used to purge the inner wall of the reactor 11. If it is done during the stirring process of the material in the reactor 11, try to choose the same purging fluid as the material or choose compressed air, nitrogen or other gases that will not chemically react with the material.
[0042] Reference Figure 3 During the purging process of the purging nozzle 14 purging the inner wall of the reactor 11, the stirring frame 13 needs to rotate continuously. In order to improve the purging effect of the purging nozzle 14 on the inner wall of the reactor 11, the purging pipe 18 and the stirring frame 13 are inclined. Specifically, the angle between the purging pipe 18 and the stirring frame 13 is between 30 degrees and 60 degrees. Preferably, the angle between the purging pipe 18 and the stirring frame 13 can be selected as 45 degrees.
[0043] Reference Figure 4 and Figure 5 During use, since the purge nozzle 14 may purge the inner wall of the reactor 11 during the material stirring process, a check valve 19 is hinged to the end of the purge pipe 18 away from the stirring frame 13 to prevent backflow and blockage of the purge port 181. The check valve 19 is used to prevent the material in the reactor 11 from flowing back into the purge pipe 18 and blocking the purge nozzle 14 during the purge of the inner wall of the reactor 11.
[0044] Reference Figure 4 In one feasible embodiment, the hinged end of the check valve 19 and the purge pipe 18 can be located above the purge port 181. When the purge nozzle 14 purges the inner wall of the reactor 11, the material blown out by the purge nozzle 14 can push the check valve 19 open. If the purge nozzle 14 stops spraying material, the check valve 19 will cover the purge port 181 under the action of gravity to prevent the material from flowing back into the purge pipe 18.
[0045] Reference Figure 5In one feasible embodiment, the hinged end of the check valve 19 and the purge pipe 18 can be located below the purge port 181, and a torsion spring 20 is connected between the check valve 19 and the purge pipe 18. Specifically, the torsion spring 20 passes through the hinge axis between the check valve 19 and the purge pipe 18, and one end of the torsion spring 20 is fixedly connected to the purge pipe 18, and the other end is fixedly connected to the check valve 19. When the purge nozzle 14 purges the inner wall of the reactor 11, the material blown out by the purge nozzle 14 can overcome the elastic force of the torsion spring 20 and push the check valve 19 open. If the purge nozzle 14 stops spraying material, the check valve 19 will cover the purge port 181 under the elastic action of the torsion spring 20 to prevent material from flowing back into the purge pipe 18.
[0046] In use, the stirring shaft 12 is driven to rotate by external force input, and the stirring frame 13 rotates synchronously with the stirring shaft 12. Purging gas or fluid is input into the stirring shaft 12 and sprayed out through the purging nozzle 14 to purge the inner wall of the reactor 11. During purging, the purging gas or fluid opens the check valve 19 and then purges the inner wall of the reactor 11. When the purging gas or fluid stops spraying, the check valve 19 blocks the purging port 181. The entire purging process can be manually controlled and adjusted.
[0047] This application also discloses a stirring system, which includes a non-contact blowing and scraping stirring device disclosed in the above embodiments.
[0048] Reference Figure 6 The stirring system includes a viscosity meter 100, a kinematic viscosity preset module 200, a judgment module 300, and a control module 400.
[0049] The viscometer 100 extends through the reactor 11 into the material being stirred inside the reactor 11. The height of the viscometer 100 is higher than that of the stirring frame 13 to avoid interference between the viscometer 100 and the rotation of the stirring frame 13. The viscometer 100 is used to detect the kinematic viscosity data of the material inside the reactor 11.
[0050] The kinematic viscosity preset module 200 is used by users or staff to preset the kinematic viscosity alarm threshold of the material in the reactor 11. The alarm threshold is the lower limit of the kinematic viscosity of the material reaching the alarm value.
[0051] The judgment module 300 is used to judge the kinematic viscosity data and the preset kinematic viscosity alarm threshold, and output the judgment result. The judgment result includes two types: first, the kinematic viscosity data is greater than or equal to the preset kinematic viscosity alarm threshold; second, the kinematic viscosity data is less than the preset kinematic viscosity alarm threshold.
[0052] The control module 400 is electrically connected to the viscosity meter 100 and is used to receive the kinematic viscosity data of the material uploaded by the viscosity meter 100. The control module 400 is also used to control the opening and closing of the above-mentioned blowing and scraping stirring device according to the judgment result output by the judgment module 300.
[0053] Specifically, the kinematic viscosity preset module 200 and the judgment module 300 are embedded in the control module 400, and the kinematic viscosity preset module 200 and the judgment module 300 are usually program modules;
[0054] Based on one of the judgment results output by the judgment module 300, the control module 400 controls the purging and scraping stirring device to purge the inner wall of the reactor 11.
[0055] Based on the second judgment result output by the judgment module 300, the control module 400 controls the blowing, scraping, and stirring device to shut down.
[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A non-contact blowing and scraping stirring device, characterized in that, include: Reactor (11); The stirring shaft (12) has a hollow flow channel inside and is rotatably connected to the reactor (11) and suspended inside the reactor (11); The stirring rack (13) has a hollow flow channel inside, is fixed to the bottom of the stirring shaft (12) and communicates with the inside of the stirring shaft (12), and forms a gap between its edge and the inner wall of the reactor (11); and A purge nozzle (14) is mounted on a stirring rack (13) and located between the stirring rack (13) and the inner wall of the reactor (11), communicating with the interior of the stirring rack (13), and is used to purge the inner wall of the reactor (11).
2. The non-contact blowing and scraping stirring device according to claim 1, characterized in that, It also includes a purge pipe (18) disposed on the stirring rack (13), the purge pipe (18) being located between the stirring rack (13) and the inner wall of the reactor (11), the purge nozzle (14) being disposed inside the purge pipe (18), and a purge port (181) being provided at one end of the purge pipe (18) away from the stirring rack (13).
3. The non-contact blowing and scraping stirring device according to claim 2, characterized in that, The purge pipe (18) is inclined to the stirring rack (13), and the included angle between the purge pipe (18) and the stirring rack (13) is between 30 degrees and 60 degrees.
4. The non-contact blowing and scraping stirring device according to claim 3, characterized in that, The angle between the purge pipe (18) and the stirring rack (13) is 45 degrees.
5. The non-contact blowing and scraping stirring device according to claim 2, characterized in that, A check valve (19) for checking and sealing the purge port (181) is hinged on the side of the purge pipe (18) away from the stirring frame (13). The hinge end of the check valve (19) and the stirring frame (13) is located above the purge port (181).
6. The non-contact blowing and scraping stirring device according to claim 2, characterized in that, A check valve (19) for checking and sealing the purge port (181) is hinged on the side of the purge pipe (18) away from the stirring frame (13). The hinge end of the check valve (19) and the stirring frame (13) is located below the purge port (181), and a torsion spring (20) is connected between the check valve (19) and the purge pipe (18).
7. The non-contact blowing and scraping stirring device according to claim 1, characterized in that, The stirring shaft (12) is rotatably connected to the reactor (11) via a bearing (16), and a rotary joint (15) is connected to the top of the stirring shaft (12). A support base (17) is provided on the reactor (11), and a support protrusion (121) is provided on the stirring shaft (12). The support protrusion (121) is located above the support base (17).
8. A stirring system comprising a non-contact blowing and scraping stirring device as described in any one of claims 1 to 7, characterized in that it further comprises: A viscosity meter (100) is installed on the reactor (11) to monitor the kinematic viscosity data of the material in the reactor (11) in real time. The kinematic viscosity preset module (200) is used to preset the kinematic viscosity alarm threshold of the material; The judgment module (300) is used to judge the kinematic viscosity data and the kinematic viscosity alarm threshold, and output the judgment result; The control module (400) is electrically connected to the viscosity meter (100) and is used to control the opening and closing of the blowing and scraping stirring device based on the judgment result output by the judgment module (300).