Sodium silicate dissolving reaction kettle

Abstract

The utility model discloses a sodium silicate dissolving reaction kettle which comprises a kettle body, a driving device, a discharging assembly, a feeding assembly, a shoveling plate and a manhole, the kettle body is driven by the driving device, the shoveling plate is arranged in the kettle body to increase the reaction strength of quartz sand and caustic soda, and the purposes of shortening the reaction time, improving the reaction efficiency and reducing the unit consumption of steam are achieved. The feeding port is formed in the side wall of the kettle body and connected with the feeding pump, so that automatic closed feeding of quartz sand and caustic soda mixed slurry raw materials is achieved, a traditional feeding mode of manually opening a top cover is replaced, the feeding efficiency is improved, shoveling plate sets distributed at intervals in the circumferential direction and the kettle body rotate to form a synergistic effect, and when the kettle body rotates, the stirring effect is good. Materials are continuously lifted to a high point through the shoveling plate and then freely fall, so that the solid-liquid contact area is increased, and the dissolution reaction time is shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of sodium silicate production equipment, and in particular to a sodium silicate dissolution reactor. Background Technology

[0002] Sodium silicate, commonly known as water glass, is mainly produced using two methods: dry and wet. The dry method uses quartz sand and soda ash as raw materials, which are melted and reacted at 1400–1500℃ to produce solid sodium silicate. Then, it is dissolved in a dissolving reactor under steam heating at 150–200℃ to produce liquid sodium silicate. The wet method uses quartz sand and caustic soda as raw materials, which are directly dissolved in a dissolving reactor under steam heating at 150–200℃ to produce liquid sodium silicate. In this method, there is a possibility that the quartz sand cannot be completely dissolved and needs to be added in excess.

[0003] In the existing technology, the wet process sodium silicate dissolution reactor adopts a drum-type dissolution reactor. Solid quartz sand is basically fed from the top feed port of the drum reactor. The cover valve is opened manually before adding the quartz sand. This has the problems of cumbersome feeding operation, high labor intensity, tedious operation, and poor operating environment. The wet process sodium silicate dissolution reactor takes 6 to 12 hours, which increases the steam consumption. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to propose a sodium silicate dissolution reactor that reduces steam consumption, simplifies the operation process, and improves dissolution efficiency.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A sodium silicate dissolution reactor includes a reactor body, a drive unit, a discharge assembly, a feed assembly, lifting plates, and an inspection hole. The reactor body has a drive end and a discharge end at its two ends. The drive unit includes a drive reducer and a reducer base; the drive reducer is connected to the drive end and placed on top of the reducer base. The discharge assembly includes a discharge pipe and a rotary sealing joint; the discharge pipe is connected to the discharge end via the rotary sealing joint. The feed assembly includes a feed inlet, a feed pipe, and a feed pump; the feed inlet is located on the side wall of the reactor body and is connected to the feed pipe, which extends into the interior of the reactor body and is connected to the feed pump. Multiple sets of lifting plates are arranged at intervals along the circumferential direction of the inner wall of the reactor body. The inspection hole is located on the top of the reactor body.

[0007] In some embodiments, the vessel body is a drum structure and is placed horizontally.

[0008] In some embodiments, the multiple sets of lifting plates are arranged in an L-shaped folded plate structure, and the long side of the lifting plate is fixedly connected to the inner wall of the vessel.

[0009] In some embodiments, an exhaust pipe is provided at one end of the vessel body, the inlet of the exhaust pipe extends into the interior of the vessel body, and the outlet of the exhaust pipe is located outside the vessel body.

[0010] In some embodiments, the air inlet of the exhaust pipe is provided with an anti-clogging conical filter plate.

[0011] In some embodiments, the drive device further includes a transmission mechanism, and the drive reducer is connected to the drive end via the transmission mechanism.

[0012] In some embodiments, the end of the feed pipe is provided with a tapered filter nozzle.

[0013] In some embodiments, the surface of the lifting plate is provided with a raised structure, which is hemispherical.

[0014] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0015] Unlike existing technologies, the above technical solution includes a vessel body, a drive unit, a discharge assembly, a feed assembly, lifting plates, and inspection holes. The drive unit drives the vessel body, and the lifting plates inside the vessel body increase the reaction intensity of quartz sand and caustic soda, thereby shortening the reaction time, improving the reaction efficiency, and reducing steam consumption. By placing the feed inlet on the side wall of the reactor and connecting it to a feed pump, automated closed-loop feeding of the quartz sand and caustic soda mixed slurry raw materials is achieved, replacing the traditional manual opening of the top cover for feeding, thus improving feeding efficiency. The circumferentially spaced lifting plate group works synergistically with the rotation of the reactor. When the reactor rotates, the lifting plates continuously lift the material to a high point and then let it fall freely, increasing the solid-liquid contact area and shortening the dissolution reaction time. The inspection hole set at the top breaks through the limitations of the traditional side inspection structure. While maintaining the structural strength of the cylinder, the modular design of the rotary sealing joint eliminates the need to disassemble the transmission mechanism during maintenance, reducing maintenance costs. The discharge end adopts a rotary sealing joint for dynamic connection with the pipeline, maintaining sealing pressure under continuous rotation conditions, reducing leakage rate, and effectively preventing equipment corrosion caused by alkali leakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a sodium silicate dissolution reactor provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a sodium silicate dissolution reactor provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the transfer plate proposed in a specific embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the drive device structure proposed in a specific embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the feeding assembly structure proposed in a specific embodiment of this utility model.

[0022] Figure label:

[0023] 1. Kettle body; 11. Drive end; 12. Discharge end; 13. Exhaust pipe; 131. Air inlet; 132. Air outlet; 133. Anti-clogging conical filter plate; 2. Drive unit; 21. Drive reducer; 22. Reducer base; 23. Transmission mechanism; 3. Discharge assembly; 31. Discharge pipe; 32. Rotary sealing joint; 4. Feed assembly; 41. Feed inlet; 42. Feed pipe; 421. Conical filter nozzle; 43. Feed pump; 5. Lifting plate; 6. Inspection hole. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0025] Please see Figure 1 This embodiment provides a sodium silicate dissolution reactor. The reactor body 1 is driven by the driving device 2. The reactor body 1 is equipped with a lifting plate 5 to increase the reaction intensity of quartz sand and caustic soda, thereby shortening the reaction time and improving the reaction efficiency.

[0026] Specifically, this embodiment provides a sodium silicate dissolution reactor, including a reactor body 1, a drive device 2, a discharge assembly 3, a feed assembly 4, a lifting plate 5, and an inspection hole 6. The reactor body 1 has a drive end 11 and a discharge end 12 at both ends. The drive device 2 includes a drive reducer 21 and a reducer base 22. The drive reducer 21 is connected to the drive end 11 and placed on top of the reducer base 22. The discharge assembly 3 includes a discharge pipe 31 and a rotary sealing joint 3. 2. The discharge pipe 31 is connected to the discharge end 12 through a rotary sealing joint 32; the feeding assembly 4 includes a feed inlet 41, a feed pipe 42 and a feed pump 43. The feed inlet 41 is located on the side wall of the vessel body 1 and is connected to the feed pipe 42. The feed pipe 42 extends into the interior of the vessel body 1 and is connected to the feed pump 43; multiple sets of lifting plates 5 are provided, and the multiple sets of lifting plates 5 are distributed circumferentially along the inner wall of the vessel body 1; the inspection hole 6 is located on the top of the vessel body 1.

[0027] In this embodiment, the driving device 2 drives the vessel body 1, and the lifting plates 5 inside the vessel body 1 increase the reaction intensity of quartz sand and caustic soda, thereby shortening the reaction time, improving the reaction efficiency, and reducing steam consumption. By setting the feed inlet 41 on the side wall of the vessel body 1 and connecting it to the feed pump 43, the automated closed-loop feeding of the mixed slurry raw materials of quartz sand and caustic soda is realized, replacing the traditional manual opening of the top cover for feeding, thus improving feeding efficiency. The circumferentially spaced lifting plates 5 work synergistically with the rotation of the vessel body 1. When the vessel body 1 rotates, the lifting plates 5 continuously lift the material to a high point and then let it fall freely, increasing the solid-liquid contact area and shortening the dissolution reaction time. The inspection hole 6 set at the top breaks through the limitations of the traditional side inspection structure. While maintaining the structural strength of the cylinder, the modular design of the rotary sealing joint 32 eliminates the need to disassemble the transmission mechanism 23 during maintenance, reducing maintenance costs. The discharge end 12 adopts the rotary sealing joint 32 to dynamically connect with the pipeline, maintaining sealing pressure under continuous rotation conditions, reducing leakage rate, and effectively preventing equipment corrosion caused by alkali leakage.

[0028] In this embodiment, the vessel body 1 serves as the main body of the entire reactor. The vessel body 1 is designed as a closed container, with a drive end 11 and a discharge end 12 at each end. The material of the vessel body 1 needs to withstand the corrosiveness of sodium silicate solution and the high-temperature environment; stainless steel or special alloy materials are typically selected. The drive reducer 21 in the drive device 2 is connected to the drive end 11 of the vessel body 1 via a coupling or direct connection, responsible for providing the torque and speed required to rotate the vessel body 1. The reducer base 22 is used to support and fix the drive reducer 21, ensuring its stability and safety during operation. The discharge pipe 31 is connected to the discharge end 12 of the vessel body 1, extending from the outside of the reactor to the inside of the vessel body. It is used to discharge the dissolved sodium silicate solution and also for introducing steam into the reactor. A rotary sealing joint 32 is installed between the discharge pipe 31 and the discharge end 12 of the vessel body 1, ensuring that the discharge pipe 31 remains sealed while the agitator rotates, preventing solution leakage. The feed inlet 41 is located on the side wall of the vessel body 1, facilitating the addition of a mixed slurry of quartz sand and caustic soda, or other additives, into the vessel body 1. The feed pipe 42 is connected to the feed inlet 41 and extends into the interior of the vessel body 1, ensuring uniform distribution of the mixed slurry. The feed pump 43 provides the necessary pressure for feeding, ensuring smooth entry of the mixed slurry into the vessel body 1. Multiple sets of lifting plates 5 are spaced circumferentially along the inner wall of the vessel body 1 to enhance turbulence and mixing during stirring, thereby improving dissolution efficiency. An inspection hole 6 is located at the top of the vessel body 1, facilitating maintenance and repair of the interior of the vessel body 1.

[0029] Furthermore, the vessel body 1 has a drum structure and is placed horizontally.

[0030] In this embodiment, the drum reactor utilizes a rolling agitation method to ensure thorough mixing and stirring of materials within the drum, guaranteeing a uniform reaction. Compared to traditional vertical reactors, the drum structure is more adaptable to materials of different shapes and sizes, resulting in superior stirring performance. The rolling agitation method of the drum reactor 1 consumes less energy than other stirring methods, contributing to lower production costs. The drum reactor 1 can process various types of raw materials, such as large solid sodium silicate, water-quenched solid sodium silicate, and mixed slurry raw materials of wet-process sodium silicate (quartz sand) and caustic soda, meeting diverse production needs without requiring equipment replacement. The drum reactor 1 features a relatively simple and compact structural design, resulting in a low failure rate, reduced maintenance and downtime, and improved equipment reliability and stability. The horizontally placed drum structure minimizes the footprint of the reactor 1, facilitating installation and use in factories or laboratories. The drum reactor 1 is relatively easy to operate, control, and adjust, reducing operational difficulty and complexity.

[0031] In this embodiment, the drum-structured vessel 1 has multiple advantages, including high and uniform stirring efficiency, low energy consumption, strong adaptability, low maintenance rate, small footprint, simple operation, and uniform heating. These advantages have led to the widespread application of drum-type reactors in various fields such as chemical engineering, pharmaceuticals, and environmental protection.

[0032] Furthermore, the multiple sets of lifting plates 5 are in the form of L-shaped folded plate structures, and the long side of the lifting plate 5 is fixedly connected to the inner wall of the vessel body 1.

[0033] In this embodiment, the L-shaped lifting plate 5 is formed by one-time stamping of high-strength stainless steel (such as SUS304 or duplex stainless steel 2205). More preferably, the bending angle between the long side and the short side is greater than 90 degrees, and the plate thickness is between 8mm and 10mm. The long side of the lifting plate 5 is fixed to the inner wall of the reactor body 1 by a full welding process, and the weld seam is inspected by penetrant testing to ensure that there are no cracks. The end of the short side is inclined inward to form a guide slope. The L-shaped lifting plate 5 can prolong the time that the material moves in the air, making the dissolution reaction more complete.

[0034] Furthermore, an exhaust pipe 13 is provided at one end of the vessel body 1. The air inlet 131 of the exhaust pipe 13 extends into the interior of the vessel body 1, and the air outlet 132 of the exhaust pipe 13 is located outside the vessel body 1.

[0035] In this embodiment, the following situations exist: (1) During the feeding process of the mixed slurry of quartz sand and caustic soda, there is a small amount of air in the unfilled space of the reactor. During the feeding process, it is necessary to discharge the air to the outside by setting an exhaust pipe 13 so that the slurry can be fed smoothly and the pressure will not rise and prevent feeding; (2) During the dissolution process of quartz sand, the pressure of the reactor will rise continuously due to the heating effect of steam. By setting an exhaust pipe 13 to release the pressure, the pressure inside the reactor can be reduced and the safe and stable working pressure inside the reactor can be maintained; (3) During the discharge process of wet sodium silicate liquid, there is water vapor in the unfilled space of the reactor. By setting an exhaust pipe 13, the water vapor inside the reactor needs to be removed first to recover the residual heat of steam at the end of the reaction. Therefore, by setting up the exhaust pipe 13, these gases can be effectively and safely guided to the outside of the vessel body 1, maintaining a suitable working environment inside the vessel. The inlet 131 of the exhaust pipe 13 extends into the interior of the vessel body 1, ensuring communication with the inside of the reactor; while the outlet 132 is located outside the vessel body 1, typically connected to a safety emission system or discharged to a steam waste heat collection device, preventing gas accumulation in the working environment. Furthermore, depending on actual needs, pressure control valves, gas filters, and other accessories can be installed on the exhaust pipe 13 to further regulate the gas emission flow rate, ensuring that emissions meet environmental and safety standards.

[0036] In this embodiment, the exhaust pipe 13 is made of seamless steel pipe or stainless steel pipe, and the air inlet 131 is located at the center of the top of the vessel body 1 and is connected to the inside of the vessel body 1 through a flange connection to ensure gas collection efficiency.

[0037] Furthermore, the air inlet 131 of the exhaust pipe 13 is provided with an anti-clogging conical filter plate 133.

[0038] In this embodiment, the structure of the anti-clogging conical filter plate 133 is such that small holes are provided inside the conical body, which blocks larger foreign objects.

[0039] In this embodiment, the anti-clogging conical filter plate 133 is made of stainless steel, and the mesh size is precisely calculated to effectively block larger foreign objects. The filter screen of the anti-clogging conical filter plate 133 is tightly fixed to the air inlet 131 of the exhaust pipe 13 by flange or threaded connection, which facilitates disassembly and installation after foreign objects block it.

[0040] Furthermore, the drive device 2 also includes a transmission mechanism 23, through which the drive reducer 21 is connected to the drive end 11.

[0041] In this embodiment, the drive device 2 consists of a drive reducer 21, a reducer base 22, and a newly added transmission mechanism 23. After reducing speed and increasing torque through the drive reducer 21, the power is transmitted to the transmission mechanism 23. The transmission mechanism 23 is responsible for smoothly and efficiently transmitting the output torque of the reducer to the drive end 11 of the stirring device, driving the vessel body 1 to rotate, thereby achieving uniform dissolution of the sodium silicate solution.

[0042] In this embodiment, the transmission mechanism 23 can be in the form of gear transmission, belt transmission, chain transmission, or coupling, etc., selected according to the specifications of the vessel 1, the working environment, and the stirring requirements. In this embodiment, gear transmission is preferably used as the transmission mechanism 23 because it has the advantages of high transmission efficiency, compact structure, and strong load-bearing capacity, and is particularly suitable for the vessel 1 that needs to transmit large torque. The gear transmission mechanism 23 consists of a driving gear and a driven gear. The driving gear is fixedly connected to the output shaft of the drive reducer 21, and the driven gear is connected to the drive end 11 of the vessel 1. When the drive reducer 21 rotates, the driving gear rotates accordingly, and through the meshing action between the gears, the power is transmitted to the driven gear, thereby driving the vessel 1 to rotate.

[0043] In this embodiment, the introduction of the transmission mechanism 23, especially the application of efficient transmission methods such as gear transmission, significantly improves the overall transmission efficiency of the drive device 2, enabling the drive end 11 to work more efficiently, improving the dissolution efficiency of sodium silicate and the production capacity of the reactor. The transmission mechanism 23 smoothly transmits the output torque of the drive reducer 21 to the drive end 11, reducing the vibration and impact that may be caused by direct connection, enhancing the structural stability of the reactor body 1, and extending the service life of the equipment.

[0044] Furthermore, a tapered feed inlet 421 is provided at the end of the feed pipe 42.

[0045] In this embodiment, the conical feed inlet 421 adopts a closed conical filter nozzle design, and the material is selected from corrosion-resistant and high-temperature-resistant alloy materials to ensure long-term stable operation. The conical filter nozzle can prevent foreign objects from clogging the reactor.

[0046] In this embodiment, when the mixed slurry of quartz sand and caustic soda enters the reactor body 1 through the feed pipe 42, it first passes through the conical feed port 421 to block foreign objects from entering the reactor, thereby avoiding blockage of the feed pipe.

[0047] Furthermore, the surface of the lifting plate 5 is provided with a raised structure, which is hemispherical.

[0048] In this embodiment, the surface of the lifting plate 5 is uniformly covered with hemispherical protrusions. These protrusions are made of the same or similar corrosion-resistant and wear-resistant material as the lifting plate 5 and are fixed to the surface of the lifting plate 5 by welding, inlaying, or mechanical connection. The hemispherical protrusions ensure that the turbulence of the fluid is effectively enhanced during stirring, while avoiding excessive wear on the inner wall of the vessel body 1.

[0049] In this embodiment, the hemispherical protrusion structure continuously contacts the fluid during rotation. Due to its special shape and distribution, it can break the original laminar flow state of the fluid and form turbulent flow, thereby enhancing the mixing effect and heat transfer performance of the fluid. At the same time, the protrusion structure can also scrape the inner wall of the vessel body 1, preventing sodium silicate solution from depositing and scaling on the inner wall of the vessel body 1, thus maintaining the cleanliness and heat transfer efficiency inside the vessel.

[0050] In summary, the sodium silicate dissolution reactor provided in this embodiment has the advantages of compact structure, simple operation, and high dissolution efficiency, and is suitable for the dissolution and mixing process of chemical raw materials such as sodium silicate.

[0051] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A sodium silicate dissolving reactor, characterized by, The utility model relates to a kind of kettle, including: Kettle body, the kettle body is provided with driving end and discharge end respectively at both ends; Driving device, the driving device includes driving speed reducer and speed reducer base, the driving speed reducer is connected to the driving end, and the driving speed reducer is placed on the top of speed reducer base; Discharge assembly, the discharge assembly includes discharge pipeline and rotary seal joint, and the discharge pipeline is communicated with the discharge end by rotary seal joint; Feeding assembly, the feeding assembly includes feed inlet, feed pipeline and feed pump, the feed inlet is arranged on the side wall of the kettle body, and the feed inlet is communicated with feed pipeline, the feed pipeline extends to the inside of the kettle body, and the feed pipeline is communicated with feed pump; Scraper, the scraper is provided with multiple groups, and multiple groups of the scraper are distributed along the inner wall of the kettle body in circumferential direction; Access hole, the access hole is arranged on the top of the kettle body.

2. The sodium silicate dissolving reactor according to claim 1, characterized in that, The kettle body is drum structure, and is placed horizontally.

3. The sodium silicate dissolving reactor according to claim 1, wherein Multiple groups of the scraper are L-shaped folded plate structure, and the long side of the scraper is fixedly connected with the inner wall of the kettle body.

4. The sodium silicate dissolving reactor according to claim 1, wherein One end of the kettle body is also provided with exhaust pipeline, the gas inlet of the exhaust pipeline extends to the inside of the kettle body, and the gas outlet of the exhaust pipeline is located outside the kettle body.

5. The sodium silicate dissolving reactor according to claim 4, wherein The gas inlet of the exhaust pipeline is provided with anti-blocking conical filter hole plate.

6. The sodium silicate dissolving reactor of claim 1, wherein, The driving device further includes transmission mechanism, and the driving speed reducer is drivingly connected with the driving end by transmission mechanism.

7. The sodium silicate dissolution reactor of claim 1, wherein, The end of the feed pipeline is provided with conical filter hole nozzle.

8. The sodium silicate dissolution reactor of claim 1, wherein, The inside of the discharge pipeline is provided with helical guide vane, the discharge pipeline is communicated with the inside of the kettle body and is long-shaped pipeline, and small hole is arranged on the long-shaped pipeline.

9. The sodium silicate dissolution reactor of claim 1, wherein, The surface of the scraper is provided with convex structure, and the convex structure is hemispherical.

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