Sodium phosphate purifying device

Abstract

The utility model discloses a sodium phosphate purification device, which belongs to the technical field of purification, and comprises a dissolving tank, a filtering tank, a crystallizing tank and a centrifugal machine, the top end of the dissolving tank is provided with a feed port, a first rotating shaft is rotatably installed between two sides of the inner wall of the dissolving tank, and a plurality of stirring rods are fixedly installed on the outer side of the first rotating shaft. A motor is fixedly mounted at the top end of the first rotating shaft, the filtering tank is clamped at the bottom end of the dissolving tank, multiple layers of filtering membranes are arranged in the filtering tank, a water inlet pipe is arranged on the outer side of the filtering tank, the crystallizing tank is clamped at the bottom end of the filtering tank, and a first annular heating pipe is mounted on the outer side of the crystallizing tank; meanwhile, a stirring assembly is arranged on the inner wall of the crystallizing tank, the stirring assembly is in transmission connection with the filtering membrane and the first rotating shaft through an inserting assembly, the centrifugal machine is fixedly installed at the bottom end of the crystallizing tank, and the device cooperatively works to improve efficiency, is convenient to disassemble and maintain, optimizes purification conditions and flexibly adjusts filtering.

Description

Technical Field

[0001] This utility model relates to the field of sodium phosphate purification, and more specifically, to a sodium phosphate purification apparatus. Background Technology

[0002] Sodium phosphate plays an indispensable role in numerous industries, including food processing, pharmaceutical manufacturing, and detergent production, due to its unique chemical properties. However, the purity of sodium phosphate is crucial to its effectiveness in these applications and directly impacts product quality.

[0003] Currently, existing methods for purifying sodium phosphate face a series of problems that urgently need to be addressed. Regarding impurity removal, traditional methods struggle to achieve complete removal, resulting in residual impurities in the final product and affecting its performance. The control of the crystallization process is also unsatisfactory, with inability to precisely regulate various parameters, leading to poor crystallization results and inconsistent crystal quality. From a production efficiency perspective, the entire purification process is cumbersome and lacks efficient coordination, resulting in long production cycles and low output.

[0004] Furthermore, some existing traditional purification devices have simple structures and unreasonable designs. Key processes such as dissolution, filtration, crystallization, and separation operate independently, failing to achieve effective collaborative operation and making it difficult to meet the growing market demand for high-purity sodium phosphate. More importantly, when equipment malfunctions, the limitations of its overall structure make disassembly between components difficult, hindering repair work. This not only increases maintenance costs but also severely impacts production schedules, significantly reducing the practicality of the equipment. These problems restrict the development of sodium phosphate purification technology, urgently requiring an innovative purification device to solve the problem. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sodium phosphate purification device, which aims to improve the problem that it is impossible to effectively coordinate the dissolution, filtration, crystallization and separation processes, and that it is inconvenient to disassemble and repair the equipment when it is damaged.

[0006] This invention is implemented as follows: A sodium phosphate purification device includes a dissolving tank, a filtering tank, a crystallizing tank, and a centrifuge. The dissolving tank has a feed inlet at its top. A first rotating shaft is rotatably mounted between the two sides of the inner wall of the dissolving tank. Multiple stirring rods are fixedly mounted on the outer side of the first rotating shaft. A motor is fixedly mounted at the top of the first rotating shaft. The bottom of the dissolving tank is snapped into the filtering tank. The filtering tank contains multiple layers of filter membranes. A water inlet pipe is provided on the outer side of the filtering tank. The bottom of the filtering tank is snapped into the crystallizing tank. A first annular heating tube is installed on the outer side of the crystallizing tank. Simultaneously, a stirring assembly is provided on the inner wall of the crystallizing tank. The stirring assembly is connected to the filter membranes and the first rotating shaft via a plug-in assembly. The centrifuge is fixedly mounted at the bottom of the crystallizing tank.

[0007] In a preferred embodiment of this utility model, a second annular heating tube is fixedly installed on the outside of the dissolving tank, a first discharge pipe is provided at the bottom of the dissolving tank, a solenoid valve is provided on the first discharge pipe, and there are multiple second annular heating tubes.

[0008] In a preferred embodiment of this utility model, a first positioning ring is fixedly installed at the bottom outer side of the dissolving tank, the bottom end of the first positioning ring is slidably sleeved on the top of the filter tank, and a first slider is fixedly installed on one side of the inner wall of the first positioning ring. The outer wall of the filter tank is provided with a first sliding groove that matches the first slider.

[0009] In a preferred embodiment of this utility model, the top of the filter tank is open, the bottom of the filter tank has symmetrically arranged arc-shaped holes, the bottom of the inner wall of the filter tank is rotatably mounted with a round seat, the top of the round seat is snapped with a round rod, a plurality of filter membranes are fixedly mounted on the round rod, and the bottom of the filter membrane can be fitted with a support strip as needed.

[0010] In a preferred embodiment of this utility model, a first insert block is fixedly installed at the top of the round base, and a first slot matching the first insert block is provided at the bottom of the round rod.

[0011] In a preferred embodiment of this utility model, a second positioning ring is fixedly installed on the outside of the filter tank, the bottom end of the second positioning ring is slidably sleeved on the crystallization tank, the top end of the crystallization tank is also open, a second slider is fixedly installed on the inner wall of the second positioning ring, and a second sliding groove matching the second slider is provided on the outer wall of the crystallization tank.

[0012] In a preferred embodiment of this utility model, the stirring assembly includes a second rotating shaft and stirring rods. The second rotating shaft is rotatably mounted at the bottom of the crystallization tank, and a plurality of stirring rods are fixedly mounted on the outside of the second rotating shaft.

[0013] In a preferred embodiment of this utility model, the plug-in assembly includes a second plug and a third plug. The second plug is fixedly installed at the top end of the second rotating shaft. The bottom end of the round seat passes through the bottom end of the filter tank and is provided with a second slot that mates with the second plug. The top end of the round rod is fixedly installed with a third plug. The bottom end of the first rotating shaft passes through the bottom end of the dissolving tank and is provided with a third slot that matches the third plug.

[0014] In a preferred embodiment of this utility model, an L-shaped frame is symmetrically fixedly installed on the outside of the crystallization tank. The L-shaped frame is fixedly connected to the first positioning ring by bolts. The outside of the first positioning ring is provided with a threaded groove that matches the bolts, and the L-shaped frame is provided with a threaded hole that matches the bolts.

[0015] The beneficial effects of this utility model are:

[0016] Enhancing Purification Synergy: This invention utilizes a plug-in assembly to connect the first rotating shaft of the dissolving tank, the filter membrane of the filtering tank, and the stirring assembly of the crystallizing tank. This allows the motor to simultaneously drive the first rotating shaft, rotating the filter membrane and operating the stirring assembly within the crystallizing tank. In this way, during the dissolution process, the stirring rod stirs and dissolves the sodium phosphate raw material, while the rotation of the filter membrane improves filtration efficiency. The synchronous stirring of the crystallizing assembly promotes uniform crystallization of the solution, achieving effective synergy between the dissolution, filtration, and crystallization stages, significantly improving purification effect and efficiency.

[0017] Facilitating equipment disassembly and maintenance: The first positioning ring at the bottom of the outer side of the dissolving tank is slidably sleeved with the top of the filtering tank and positioned by the cooperation of the first slider and the first groove; the second positioning ring on the outer side of the filtering tank is slidably sleeved with the crystallizing tank and positioned by the second slider and the second groove; the L-shaped frame on the outer side of the crystallizing tank is fixedly connected to the first positioning ring by bolts. This structural design ensures a stable connection between the tanks, and when the equipment needs maintenance, simply unscrewing the bolts and releasing the sleeved relationship between each positioning ring and the tank body allows for easy disassembly of each tank and internal components, greatly reducing maintenance difficulty and improving the practicality of the equipment.

[0018] Optimize dissolution and crystallization conditions: Multiple second annular heating tubes are installed on the outside of the dissolution tank, which can adjust the heating power according to actual needs, precisely control the dissolution temperature, accelerate the dissolution rate of sodium phosphate, and improve the dissolution efficiency; the first annular heating tube on the outside of the crystallization tank can provide a suitable temperature environment for the solution during the crystallization process. Combined with the stirring action of the stirring component, it is conducive to the uniform growth and precipitation of crystals, further improving the purity and quality of the product.

[0019] Flexible filtration structure: The filter membrane inside the filter tank is mounted on a round rod, which is engaged with a round base that can rotate. Support bars can also be installed at the bottom of the filter membrane as needed. This design allows for flexible replacement of filter membranes with different pore sizes or materials when dealing with raw materials with varying impurity content and properties. Furthermore, the installation of support bars enhances the stability of the filter membrane, ensuring that the filtration effect consistently meets purification requirements. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the structure of a sodium phosphate purification device provided by an embodiment of the present invention;

[0022] Figure 2 A partial structural schematic diagram of a sodium phosphate purification device provided for an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of the structure of the dissolving tank is provided for the embodiments of this utility model;

[0024] Figure 4 A schematic diagram of the filter tank is provided for the embodiments of this utility model;

[0025] Figure 5 A schematic diagram of the crystallization tank is provided for the embodiments of this utility model.

[0026] In the diagram: 110, dissolving tank; 111, first rotating shaft; 112, stirring rod; 113, motor; 114, first positioning ring; 120, filter tank; 121, filter membrane; 122, round seat; 123, round rod; 124, second positioning ring; 130, crystallizing tank; 131, second rotating shaft; 132, stirring rod; 133, L-shaped frame; 140, centrifuge. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] Please see Figures 1-5This utility model provides a technical solution: a sodium phosphate purification device, comprising a dissolving tank 110, a filtering tank 120, a crystallizing tank 130, and a centrifuge 140. The dissolving tank 110 has a feed inlet at its top. A first rotating shaft 111 is rotatably mounted between the two sides of the inner wall of the dissolving tank 110. Multiple stirring rods 112 are fixedly mounted on the outer side of the first rotating shaft 111. A motor 113 is fixedly mounted at the top of the first rotating shaft 111. The bottom of the dissolving tank 110 is clamped to the filtering tank 120. The filtering tank 120 contains multiple layers of filter membrane 121. A water inlet pipe is provided on the outer side of the filtering tank 120. The top of the filtering tank 120 is open. Symmetrically arranged arc-shaped holes are provided at the bottom of the filtering tank 120. A round seat 122 is rotatably mounted on the bottom of the inner wall of the filtering tank 120. A round rod is clamped at the top of the round seat 122. 123. Multiple filter membranes 121 are fixedly installed on the round rod 123. Support bars can be installed at the bottom of the filter membranes 121 as needed. The bottom of the filter tank 120 is snapped into the crystallization tank 130. A first annular heating tube is installed on the outside of the crystallization tank 130. At the same time, a stirring assembly is provided on the inner wall of the crystallization tank 130. The stirring assembly is connected to the filter membranes 121 and the first rotating shaft 111 through a plug-in assembly. A centrifuge 140 is fixedly installed at the bottom of the crystallization tank 130. A second positioning ring 124 is fixedly installed on the outside of the filter tank 120. The bottom of the second positioning ring 124 is slidably sleeved into the crystallization tank 130. The top of the crystallization tank 130 is also open. A second slider is fixedly installed on the inner wall of the second positioning ring 124. A second sliding groove matching the second slider is provided on the outer wall of the crystallization tank 130.

[0029] In some specific implementation schemes, a second annular heating tube is fixedly installed on the outside of the dissolving tank 110, and a first discharge pipe is provided at the bottom of the dissolving tank 110. A solenoid valve is installed on the first discharge pipe. Multiple second annular heating tubes are used to heat the material inside the dissolving tank 110 from multiple angles, resulting in a more uniform heat distribution and effectively preventing localized overheating or undercooling, thus improving the dissolving effect. The combination of the first discharge pipe and the solenoid valve facilitates precise control of the timing and flow rate of the dissolved solution discharge, ensuring an appropriate amount of solution enters the filtration stage, avoiding waste and guaranteeing stable operation of subsequent processes. For example, when it is necessary to adjust the production rhythm, the discharge volume can be flexibly controlled through the solenoid valve.

[0030] In some specific implementations, a first positioning ring 114 is fixedly installed on the bottom outer side of the dissolving tank 110. The bottom end of the first positioning ring 114 is slidably sleeved on the top of the filter tank 120, and a first slider is fixedly installed on one side of the inner wall of the first positioning ring 114. The outer wall of the filter tank 120 is provided with a first sliding groove that matches the first slider to prevent shaking or displacement during equipment operation and ensure the structural stability of the entire purification device. On the other hand, this design makes the installation and disassembly of the dissolving tank 110 and the filter tank 120 easy and convenient. When it is necessary to clean, maintain or replace parts of one of the tanks, the operator can easily separate or install along the direction of the sliding groove, reducing the difficulty of maintenance and saving maintenance time and labor costs.

[0031] In some specific implementations, a first insert block is fixedly mounted on the top of the circular base 122, and a first slot matching the first insert block is provided at the bottom of the circular rod 123, enabling a quick and precise connection between the circular base 122 and the circular rod 123. This plug-in structure is securely installed, and when the filter membrane 121 needs to be replaced, the circular rod 123 can be easily pulled out from the circular base 122, simplifying the operation, improving the efficiency of filter membrane 121 replacement, and reducing downtime due to equipment maintenance.

[0032] In some specific implementations, the stirring assembly includes a second rotating shaft 131 and stirring rods 132. The second rotating shaft 131 is rotatably mounted on the bottom of the crystallization tank 130, and multiple stirring rods 132 are fixedly mounted on the outside of the second rotating shaft 131. The plug-in assembly includes a second plug and a third plug. The second plug is fixedly mounted on the top of the second rotating shaft 131. The bottom of the round seat 122 passes through the bottom of the filter tank 120 and is provided with a second slot that mates with the second plug. The top of the round rod 123 is fixedly mounted with a third plug. The bottom of the first rotating shaft 111 passes through the bottom of the dissolving tank 110 and is provided with a third slot that matches the third plug. This achieves a reliable transmission connection between the first rotating shaft 111, the filter membrane 121, and the second rotating shaft 131. This connection method allows the motor 113 to drive the first rotating shaft 111 to rotate, which in turn efficiently drives the filter membrane 121 and the stirring assembly inside the crystallization tank 130 to operate synchronously, ensuring the synergy of power in the dissolving, filtering, and crystallizing processes, and improving the efficiency and stability of the entire purification process. At the same time, this plug-in structure is easy to operate during equipment assembly and maintenance, reducing the difficulty of equipment assembly and maintenance costs.

[0033] In some specific implementation schemes, L-shaped frames 133 are symmetrically fixedly installed on the outer side of the crystallization tank 130. The L-shaped frames 133 are fixedly connected to the first positioning ring 114 by bolts. The outer side of the first positioning ring 114 is provided with threaded grooves that match the bolts, and the L-shaped frames 133 are provided with threaded holes that match the bolts. During equipment operation, this effectively resists vibration and impact forces generated by stirring, material flow, etc., ensuring stable equipment operation. Moreover, the bolt connection method facilitates disassembly and adjustment. When partial adjustments or maintenance of the equipment are required, the bolts can be unscrewed for operation, improving the maintainability of the equipment.

[0034] Working principle: The raw materials are first dissolved in the dissolving tank 110, then filtered in the filtering tank 120, then crystallized in the crystallizing tank 130, and finally separated from the mother liquor by the centrifuge 140. The specific process is as follows:

[0035] Dissolution process: Sodium phosphate raw material is added through the feed inlet at the top of dissolving tank 110, along with solvent. Motor 113 is started, driving the first rotating shaft 111 and stirring rod 112 to rotate, stirring the raw material and solvent. The second annular heating tube on the outside of dissolving tank 110 begins heating, increasing the dissolution rate and solubility. Heating and stirring parameters can be adjusted as needed to ensure the sodium phosphate is fully dissolved to form a solution. After dissolution is complete, the solenoid valve on the first discharge pipe is opened, and the solution enters the filter tank 120 through the bottom of dissolving tank 110.

[0036] Filtration process: The solution enters the filter tank 120, where a multi-layer filter membrane 121 filters the solution, removing insoluble impurities. A water inlet pipe on the outside of the filter tank 120 can be connected to cleaning water for periodic cleaning of the filter membrane 121. The inner circular seat 122 of the filter tank 120 rotates, causing the filter membrane 121, fixed on the circular rod 123, to rotate, improving filtration efficiency. The filtered solution enters the crystallization tank 130 through the arc-shaped hole at the bottom of the filter tank 120.

[0037] Crystallization process: The filtered solution enters the crystallization tank 130. The first annular heating tube on the outside of the crystallization tank 130 heats or cools the solution as needed. Simultaneously, the second rotating shaft 131 of the stirring assembly drives the stirring rod 132 to rotate, ensuring uniform mixing of the solution. Under temperature control and stirring, sodium phosphate crystallizes out of the solution.

[0038] Separation process: After crystallization, the mixture containing crystals and mother liquor enters centrifuge 140 from the bottom of crystallization tank 130. Centrifuge 140 uses high-speed rotation to generate centrifugal force, separating the sodium phosphate crystals from the mother liquor. The separated crystals can be further processed to obtain high-purity sodium phosphate product, and the mother liquor can be recovered or treated as needed.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sodium phosphate purification apparatus, characterized in that, The system includes a dissolving tank, a filtering tank, a crystallizing tank, and a centrifuge. The dissolving tank has a feed inlet at its top. A first rotating shaft is rotatably mounted between the two sides of the inner wall of the dissolving tank. Multiple stirring rods are fixedly mounted on the outer side of the first rotating shaft, and a motor is fixedly mounted at the top of the first rotating shaft. The bottom of the dissolving tank is snapped into the filtering tank, which contains multiple layers of filter membranes. A water inlet pipe is located on the outer side of the filtering tank. The bottom of the filtering tank is snapped into the crystallizing tank, which has a first annular heating tube installed on its outer side. A stirring assembly is located on the inner wall of the crystallizing tank, and the stirring assembly is connected to the filter membranes and the first rotating shaft via a plug-in assembly. The centrifuge is fixedly mounted at the bottom of the crystallizing tank.

2. The sodium phosphate purification apparatus according to claim 1, characterized in that, A second annular heating tube is fixedly installed on the outside of the dissolving tank, and a first discharge pipe is provided at the bottom of the dissolving tank, with a solenoid valve installed on the first discharge pipe.

3. The sodium phosphate purification apparatus according to claim 1, characterized in that, A first positioning ring is fixedly installed at the bottom outer side of the dissolving tank. The bottom end of the first positioning ring is slidably sleeved on the top of the filtering tank. A first slider is fixedly installed on one side of the inner wall of the first positioning ring. A first groove matching the first slider is provided on the outer wall of the filtering tank.

4. The sodium phosphate purification apparatus according to claim 1, characterized in that, The filter tank has an opening at the top and symmetrical arc holes at the bottom. A round seat is rotatably mounted on the bottom of the inner wall of the filter tank, and a round rod is snapped onto the top of the round seat. Multiple filter membranes are fixedly mounted on the round rod.

5. The sodium phosphate purification apparatus according to claim 4, characterized in that, The first insert is fixedly installed at the top of the round base, and the bottom of the round rod is provided with a first slot that matches the first insert.

6. The sodium phosphate purification apparatus according to claim 1, characterized in that, A second positioning ring is fixedly installed on the outside of the filter tank. The bottom end of the second positioning ring is slidably sleeved onto the crystallization tank. The top of the crystallization tank is also open. A second slider is fixedly installed on the inner wall of the second positioning ring. A second groove matching the second slider is provided on the outer wall of the crystallization tank.

7. The sodium phosphate purification apparatus according to claim 5, characterized in that, The stirring assembly includes a second rotating shaft and stirring rods. The second rotating shaft is rotatably mounted at the bottom of the crystallization tank, and multiple stirring rods are fixedly mounted on the outside of the second rotating shaft.

8. The sodium phosphate purification apparatus according to claim 7, characterized in that, The plug-in assembly includes a second plug and a third plug. The second plug is fixedly installed at the top end of the second rotating shaft. The bottom end of the round seat passes through the bottom end of the filter tank and is provided with a second slot that mates with the second plug. The top end of the round rod is fixedly installed with the third plug. The bottom end of the first rotating shaft passes through the bottom end of the dissolving tank and is provided with a third slot that matches the third plug.

9. The sodium phosphate purification apparatus according to claim 3, characterized in that, The crystallization tank is symmetrically and fixedly installed with L-shaped frames on the outside, and the L-shaped frames are fixedly connected to the first positioning ring by bolts.

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