Collecting and storing device for sodium methoxide

Abstract

The utility model relates to the technical field of sodium methoxide storage, in particular to a sodium methoxide collection and storage device which comprises a tank body with an opening in the top and a tank cover buckled at the top end of the tank body, an air inlet mechanism is arranged at the bottom of the tank body, an exhaust mechanism is arranged on the tank cover, and a drying system is arranged on one side of the tank body. The air inlet mechanism comprises a first one-way valve and a first material blocking cover arranged on the first one-way valve in a sleeving mode, a first filtering hole is formed in the first material blocking cover, and the output end of the first one-way valve communicates with an inner cavity of the tank body through the first filtering hole. The exhaust mechanism comprises a second one-way valve and a second material blocking cover arranged on the second one-way valve in a sleeving mode, and second filtering holes are formed in the second material blocking cover. The drying system comprises an air storage tank, and a first filter, an air pump, a first three-way valve and a third one-way valve are sequentially arranged on one side of the air storage tank in the direction away from the air storage tank. The utility model provides the collecting and storing device for the sodium methoxide, which is convenient for the protective gas to fill the storage tank, simplifies the storage operation and improves the storage stability.

Description

Technical Field

[0001] This utility model relates to the field of sodium methoxide storage technology, specifically to a sodium methoxide collection and storage device. Background Technology

[0002] Sodium methoxide is a mature chemical product with applications spanning multiple industries, including pharmaceuticals, pesticides, and new energy. In pharmaceutical manufacturing, this compound is primarily used as an intermediate raw material for the preparation of drugs such as sulfadiazine, sulfonamide potentiators, and vitamin A, while also playing a crucial role in the synthesis of cephalosporin antibiotics. As a basic catalyst in organic synthesis, sodium methoxide can promote reactions such as Claisen condensation and aldol condensation. In pesticide production, it is used to synthesize pyrethroid compounds and catalyzes the transesterification reaction of fatty acid methyl esters in biodiesel production. Industrial-grade sodium methoxide exists in both solid and liquid forms. The solid form is pure sodium methoxide with a sodium methoxide content of over 97%, appearing as a white amorphous powder at room temperature and pressure, and exhibiting strong hygroscopicity. The liquid form is a methanol solution of sodium methoxide, appearing as a colorless or slightly yellow viscous liquid, with a sodium methoxide content of 28.5%–31%. Due to its extremely reactive chemical properties, sodium methoxide undergoes immediate hydrolysis upon contact with water, producing highly corrosive sodium hydroxide and flammable methanol. Therefore, sodium methoxide is particularly sensitive to air and water, so it is necessary to ensure that the storage environment for sodium methoxide is kept dry and to reduce the air content in the storage cavity.

[0003] To prevent air from contacting sodium methoxide and triggering unnecessary chemical reactions, storage tanks are used to store it. Anhydrous protective gas is injected into the tank through an inlet at the top to improve the safety of sodium methoxide storage. However, since each tank has only one inlet, the air inside needs to be expelled during the injection of protective gas. This expulsion is incomplete, preventing the tank from completely filling. The remaining air can still cause a small amount of sodium methoxide to decompose during subsequent storage, thus affecting the storage efficiency. Furthermore, the storage tanks are equipped with manual valves to control the opening and closing of the inlet and outlet. When multiple tanks need to be stored, operators must manually open the inlet valve of each tank individually, inflate it, and then close the valve one by one. This process is not only cumbersome but also time-consuming, especially when processing a large number of tanks, significantly reducing efficiency. Furthermore, to fill the storage tank with anhydrous protective gas, an air pump is needed to pressurize the gas. However, when changing the storage tank, the air pump must be shut off to prevent excessive pressure on the pipeline. Therefore, the air pump needs to be repeatedly turned on and off, which is not only cumbersome but may also affect its stability and lifespan. Given these issues, there is room for improvement in the collection and storage of sodium methoxide to ensure the storage tank is filled with protective gas, thereby improving operational convenience and the stability of the filling process. This will ensure the safety and stability of sodium methoxide during storage. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sodium methoxide collection and storage device that allows the storage tank to be filled with protective gas, simplifies storage operations, and improves storage stability, thereby overcoming the deficiencies in existing technologies.

[0005] The technical solution adopted by this utility model is as follows: a collection and storage device for sodium methoxide, comprising a tank with an open top and a tank cover that is fastened to the top of the tank. An air inlet mechanism is provided at the bottom of the tank, and an exhaust mechanism is provided on the tank cover. A drying system is provided on one side of the tank. The air inlet mechanism includes a first check valve and a first baffle cover fitted onto the first check valve. The first check valve and the first baffle cover are respectively embedded in the bottom plate of the tank. A filter hole is provided on the first baffle cover, and the output end of the first check valve is connected to the inner cavity of the tank through the filter hole. The exhaust mechanism includes a second check valve and a third check valve. The second baffle cover of the two-piece set, the one-way valve and the second baffle cover are respectively embedded in the tank cover. The second baffle cover has a filter hole. The output end of the one-way valve is connected to the inner cavity of the tank through the filter hole. The drying system includes a gas storage tank. On one side of the gas storage tank, along the direction away from the gas storage tank, a filter, an air pump, a three-way valve and a one-way valve are arranged in sequence. The delivery end of the three-way valve is connected to the gas storage tank through the air pump and the filter. The first output end of the three-way valve is connected to the input end of the one-way valve. The second output end of the three-way valve is connected to the gas storage tank through the one-way valve.

[0006] Preferably, a filter, a three-way valve, and a four-way valve are sequentially arranged on one side of the one-way valve two along the direction from the one-way valve two to the gas storage tank. The output ends of the one-way valve four and the one-way valve three are both connected to the gas storage tank. The input end of the three-way valve two is connected to the output end of the one-way valve two through the filter two. The first output end of the three-way valve two is connected to the input end of the one-way valve four. An exhaust valve is provided on one side of the three-way valve two, and the bottom end of the exhaust valve is connected to the second output end of the three-way valve two.

[0007] Preferably, a fixed pipe is provided between the one-way valve two and the filter two, and a sleeve is movably fitted on the fixed pipe. The output end of the one-way valve two is located inside the sleeve, and the inner diameter of the sleeve matches the outer diameter of the fixed pipe. A screw is provided at the bottom of the fixed pipe, and one end of the screw is installed on the outer wall of the fixed pipe. A sleeve groove is opened on the top side wall of the sleeve, and the screw is movably fitted in the sleeve groove. A nut is threaded on the screw, and the sleeve is clamped to the fixed pipe by the nut. A sealing groove one is opened on the outer wall of the fixed pipe below the screw. A sealing ring one made of elastic material is interference fitted in the sealing groove one, and the sealing ring one is interference fitted in the sleeve. A sealing second is opened at the bottom end of the sleeve. A sealing ring two made of elastic material is interference fitted in the sealing groove one, and the sealing ring two is pressed against the can lid.

[0008] Preferably, a U-shaped bend is provided between the fixed pipe and the second filter. The bottom end of the bend is located below the second filter, and one side of the bend is connected to the second filter. A one-way valve is provided between the bend and the fixed pipe. The input end of the one-way valve is connected to the fixed pipe, and the output end of the one-way valve is connected to the bend. A drain valve is provided below the bend, and an inlet valve is provided above the bend. The inlet valve and the drain valve are respectively connected to the bend.

[0009] Preferably, a control valve is provided between the three-way valve and the tank body. A flange is provided on one side of the control valve and is connected to the control valve. A sealing ring three made of elastic material is provided on the flange and is pressed between the flange and the tank body. The bottom of the one-way valve is located inside the sealing ring three and the flange. The one-way valve is connected to the control valve through the inner cavity of the flange. A fixing ring is fitted on the flange and is installed on the tank body.

[0010] Preferably, a master control valve is provided between the first filter and the air storage tank, and the air storage tank is connected to the first filter through the master control valve. A temperature sensor is provided between the first filter and the air pump, and the first filter is connected to the air pump through the temperature sensor. A pressure sensor is provided between the air pump and the first three-way valve, and the air pump is connected to the first three-way valve through the pressure sensor.

[0011] The beneficial effects of this invention are as follows: First, by using one-way valve 1 and one-way valve 2, an air inlet channel and an exhaust channel are respectively created on both sides of the tank, allowing the protective gas to fill the tank. The one-way valve 1 and one-way valve 2, which allow only one-way passage, effectively seal the tank, reducing storage operations. The sodium methoxide powder is sieved through filter holes 1 on the first baffle cover and 2 on the second baffle cover, preventing leakage from the tank. Furthermore, the three-way valve 1 controls the flow of protective gas towards or back to the storage tank, avoiding repeated starting and stopping of the gas pump, thus improving the stability of the filling process. It also allows for multiple filtrations of the delivered protective gas using filter 1, improving its quality.

[0012] Secondly, this invention filters the gas discharged from the tank using a second filter, and discharges or delivers the treated gas to the storage tank via a third-way valve, thus saving on the amount of protective gas used in the storage tank. One-way valves three and four prevent the gas from flowing directly from the storage tank to the first and second three-way valves, thereby improving the stability of protective gas delivery. Furthermore, this invention uses a screw and nut to clamp the sleeve onto the fixed pipe, facilitating control of the sleeve's clamping position and allowing for the assembly of tanks of different heights onto the sleeve. Sealing rings one and two seal the gaps between the fixed pipe and the sleeve, as well as between the sleeve and the tank, preventing leakage and improving the stability of inflation.

[0013] Furthermore, this invention utilizes an inlet valve to fill the bend with liquid, thereby absorbing the sodium methoxide carried in the gas discharged from the tank and preventing its release. A drain valve allows the liquid containing sodium methoxide to be discharged for recovery. A one-way valve prevents gas or liquid from flowing into the fixed pipe. Additionally, a control valve controls the delivery of protective gas to the tank, enabling the creation of multiple parallel filling environments for convenient filling and storage of multiple tanks. A sealing ring prevents leakage between the tank and the flange. The flange and retaining ring facilitate quick connection between the tank and the control valve. Temperature and pressure sensors monitor the parameters of the delivered protective gas, providing information on its delivery. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0016] Figure 3 for Figure 1 Enlarged diagram of point B in the middle.

[0017] Figure 4 for Figure 1 Enlarged diagram of point C in the middle. Detailed Implementation

[0018] like Figures 1 to 4As shown, a sodium methoxide collection and storage device includes a tank 1 with an open top and a tank cover 2 fastened to the top of the tank 1. An air inlet mechanism is provided at the bottom of the tank 1, and an exhaust mechanism is provided on the tank cover 2. A drying system is provided on one side of the tank 1. The air inlet mechanism includes a one-way valve 3 and a first baffle cover 4 fitted onto the one-way valve 3. The one-way valve 3 and the first baffle cover 4 are respectively embedded in the bottom plate of the tank 1. The first baffle cover 4 has a filter hole 5. The output end of the one-way valve 3 is connected to the inner cavity of the tank 1 through the filter hole 5, thereby facilitating the delivery of dry protective gas into the tank 1. The exhaust mechanism includes a one-way valve 6 and a second baffle cover 7 fitted onto the one-way valve 6. The one-way valve 6 and the second baffle cover 7 are respectively embedded in the tank cover 2. The second baffle cover 7 has a filter hole 8. The output end of the one-way valve 6 is connected to the inner cavity of the tank 1 through the filter hole 8, so as to discharge the gas from the tank 1. The drying system includes a gas storage tank 9. A filter 10, a pump 11, a three-way valve 12, and a one-way valve 13 are sequentially arranged along one side of the gas storage tank 9 away from it. The delivery end of the three-way valve 12 is connected to the gas storage tank 9 via the pump 11 and the filter 10. The first output end of the three-way valve 12 is connected to the input end of the one-way valve 3. The filter 10 filters and dehumidifies the protective gas output from the gas storage tank 9, allowing the dried protective gas to be delivered to the tank 1 via the one-way valve 3, thus providing a dry environment for the storage of sodium methoxide. The second output end of the three-way valve 12 is connected to the gas storage tank 9 via the one-way valve 13, allowing the filtered and dehumidified protective gas to be returned to the gas storage tank 9. This process allows for multiple filtrations of the delivered protective gas and avoids repeated switching on and off of the pump 11, thereby improving the stability of the pump 11.

[0019] In this embodiment, a filter 14, a three-way valve 15, and a four-way valve 16 are sequentially arranged along one side of the one-way valve 2 6 to the gas storage tank 9. The output ends of the four-way valve 16 and the three-way valve 13 are both connected to the gas storage tank 9. The input end of the three-way valve 2 15 is connected to the output end of the one-way valve 2 6 through the filter 2 14, so that the gas output from the tank 1 is filtered by the filter 2 14. The first output end of the three-way valve 2 15 is connected to the input end of the one-way valve 4 16 so as to transport the treated gas back to the gas storage tank 9, so as to save the amount of protective gas used in the gas storage tank 9. An exhaust valve 17 is provided on one side of the three-way valve 2 15. The bottom end of the exhaust valve 17 is connected to the second output end of the three-way valve 2 15 so as to discharge the treated gas.

[0020] Specifically, a fixed pipe 18 is provided between the one-way valve 6 and the filter 14. A sleeve 19 is movably fitted onto the fixed pipe 18. The output end of the one-way valve 6 is located inside the sleeve 19. The inner diameter of the sleeve 19 matches the outer diameter of the fixed pipe 18. A screw 20 is provided at the bottom of the fixed pipe 18, and one end of the screw 20 is installed on the outer wall of the fixed pipe 18. A groove 21 is opened on the top side wall of the sleeve 19, and the screw 20 is movably fitted into the groove 21. A nut 22 is threaded onto the screw 20, and the sleeve 19 is clamped onto the fixed pipe 18 by the nut 22, thereby facilitating the adjustment of the installation position of the sleeve 19. The tanks 1 of different heights are then assembled onto the sleeve 19. A sealing groove 18 is provided below the screw 20. The sealing groove 18 is located on the outer wall of the fixing tube 18. A sealing ring 23 made of elastic material is interference-fitted into the sealing groove 1. The sealing ring 23 is interference-fitted into the sleeve 19, thereby sealing the gap between the fixing tube 18 and the sleeve 19. A second seal is provided at the bottom end of the sleeve 19. A second sealing ring 24 made of elastic material is interference-fitted into the sealing groove 1. The sealing ring 24 is pressed against the tank cover 2, thereby sealing the gap between the sleeve 19 and the tank 1 and preventing air leakage.

[0021] Please refer to it again. Figure 1 A U-shaped bend 25 is provided between the fixed pipe 18 and the filter 2 14. The bottom end of the bend 25 is located below the filter 2 14, and one side of the bend 25 is connected to the filter 2 14. A one-way valve 5 26 is provided between the bend 25 and the fixed pipe 18. The input end of the one-way valve 5 26 is connected to the fixed pipe 18, and the output end of the one-way valve 5 26 is connected to the bend 25, thereby preventing the protective gas entering the bend 25 from flowing back into the fixed pipe 18. A drain valve 27 is provided below the bend 25 to drain the water in the bend 25. An inlet valve 28 is provided above the bend 25 to fill the bend 25 with water. The inlet valve 28 and the drain valve 27 are respectively connected to the bend 25, so that the water in the bend 25 can absorb the sodium methoxide carried out by the protective gas to prevent the sodium methoxide from escaping.

[0022] In this embodiment, a control valve 29 is provided between the three-way valve 12 and the tank 1 to control the opening or closing of the gas supply to the tank 1. A flange 30 is provided on one side of the control valve 29, and the flange 30 is connected to the control valve 29. A sealing ring 31 made of elastic material is provided on the flange 30, and the sealing ring 31 is pressed between the flange 30 and the tank 1. The bottom of the one-way valve 3 is located inside the sealing ring 31 and the flange 30. The one-way valve 3 is connected to the control valve 29 through the inner cavity of the flange 30. A fixing ring 32 is fitted on the flange 30 and is installed on the tank 1, thereby assembling the tank 1 onto the flange 30.

[0023] Specifically, a master control valve 33 is provided between the filter 10 and the gas storage tank 9. The gas storage tank 9 is connected to the filter 10 through the master control valve 33 to quickly shut off the output of the gas storage tank 9. A temperature sensor 34 is provided between the filter 10 and the air pump 11. The filter 10 is connected to the air pump 11 through the temperature sensor 34 to detect the temperature of the protective gas being delivered. A pressure sensor 35 is provided between the air pump 11 and the three-way valve 12. The air pump 11 is connected to the three-way valve 12 through the pressure sensor 35 to facilitate the measurement of the pressure of the protective gas delivered after the air pump 11 pressurizes it.

[0024] The instructions for using this product are as follows: Figures 1 to 4 As shown, firstly, adjust three-way valve 12 and three-way valve 2 to connect air pump 11 and check valve 3, and exhaust valve 17 to filter 2 14. After completing these connection operations, open the main control valve 33 and start air pump 11. At this time, the protective gas in the gas storage tank 9 is circulated and filtered through filter 10 to ensure the purity of the gas. The information on the protective gas delivery is obtained by observing temperature sensor 34 and pressure sensor 35. Next, place tank 1 on flange 30, ensuring that retaining ring 32 is fitted on flange 30, and pull sleeve 19 toward tank 1 so that sealing ring 2 is evenly squeezed onto tank cover 2 to form a good sealing effect. Then, tighten nut 22 to clamp sleeve 19 onto fixed pipe 18.

[0025] After completing the above preparations, first open control valve 29. This step is to prepare to deliver protective gas into tank 1. Next, switch three-way valve 12 so that the protective gas in storage tank 9 is delivered to tank 1 through check valve 3 and discharged through check valve 6 and exhaust valve 17. After the air in tank 1 is discharged through exhaust valve 17, to save protective gas consumption, switch three-way valve 15 to control the gas discharged by check valve 6 to flow back to storage tank 9. Finally, adjust three-way valve 12 to connect air pump 11 and check valve 13 so that tank 1 can be removed from flange 30.

[0026] In this embodiment, one-way valve 3 and one-way valve 6 are used to create air inlet and exhaust channels on both sides of the tank 1, respectively, so that the protective gas can fill the tank 1. The one-way valves 3 and 6, which allow only one-way passage, seal the tank 1, reducing storage operations. The sodium methoxide powder is sieved through filter holes 5 on the first baffle cover 4 and 8 on the second baffle cover 7, preventing leakage from the tank 1. Furthermore, the three-way valve 12 controls the flow of protective gas towards or back to the storage tank 9, avoiding repeated starting and stopping of the air pump 11, thus improving the stability of the filling process. It also allows for multiple filtrations of the delivered protective gas using filter 10, improving its quality.

[0027] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A collection and storage device for sodium methoxide, comprising a tank (1) with an open top and a tank cover (2) that snaps onto the top of the tank (1), characterized in that: An air intake mechanism is provided at the bottom of the tank (1), an exhaust mechanism is provided on the tank cover (2), and a drying system is provided on one side of the tank (1). The air intake mechanism includes a one-way valve (3) and a first baffle cover (4) fitted on the one-way valve (3). The one-way valve (3) and the first baffle cover (4) are respectively embedded in the bottom plate of the tank body (1). A filter hole (5) is opened on the first baffle cover (4). The output end of the one-way valve (3) is connected to the inner cavity of the tank body (1) through the filter hole (5). The exhaust mechanism includes a one-way valve (6) and a second baffle (7) fitted on the one-way valve (6). The one-way valve (6) and the second baffle (7) are respectively embedded in the tank cover (2). The second baffle (7) has a filter hole (8). The output end of the one-way valve (6) is connected to the inner cavity of the tank body (1) through the filter hole (8). The drying system includes an air storage tank (9). A filter (10), an air pump (11), a three-way valve (12), and a one-way valve (13) are arranged sequentially on one side of the air storage tank (9) away from the air storage tank (9). The delivery end of the three-way valve (12) is connected to the air storage tank (9) through the air pump (11) and the filter (10). The first output end of the three-way valve (12) is connected to the input end of the one-way valve (3). The second output end of the three-way valve (12) is connected to the air storage tank (9) through the one-way valve (3) (13).

2. The sodium methoxide collection and storage device according to claim 1, characterized in that: A filter 2 (14), a three-way valve 2 (15), and a one-way valve 4 (16) are sequentially arranged on one side of the one-way valve 2 (6) along the direction from the one-way valve 2 (6) to the gas storage tank (9). The output end of the one-way valve 4 (16) and the output end of the one-way valve 3 (13) are both connected to the gas storage tank (9). The input end of the three-way valve 2 (15) is connected to the output end of the one-way valve 2 (6) through the filter 2 (14). The first output end of the three-way valve 2 (15) is connected to the input end of the one-way valve 4 (16). An exhaust valve (17) is arranged on one side of the three-way valve 2 (15). The bottom end of the exhaust valve (17) is connected to the second output end of the three-way valve 2 (15).

3. The sodium methoxide collection and storage device according to claim 2, characterized in that: A fixed pipe (18) is provided between the one-way valve (6) and the filter (14). A sleeve (19) is movably fitted on the fixed pipe (18). The output end of the one-way valve (6) is located inside the sleeve (19). The inner diameter of the sleeve (19) matches the outer diameter of the fixed pipe (18). A screw (20) is provided at the bottom of the fixed pipe (18). One end of the screw (20) is installed on the outer wall of the fixed pipe (18). A groove (21) is opened on the top side wall of the sleeve (19). The screw (20) is movably fitted in the groove (21). The threaded sleeve is fitted with a nut (22), and the sleeve (19) is clamped to the fixed tube (18) by the nut (22); the fixed tube (18) below the screw (20) has a sealing groove 1, which is opened on the outer wall of the fixed tube (18), and a sealing ring 1 (23) made of elastic material is interference fitted in the sealing groove 1, and the sealing ring 1 (23) is interference fitted in the sleeve (19); the bottom end of the sleeve (19) has a sealing 2, and a sealing ring 2 (24) made of elastic material is interference fitted in the sealing groove 1, and the sealing ring 2 (24) is pressed on the can lid (2).

4. The sodium methoxide collection and storage device according to claim 3, characterized in that: A U-shaped bend (25) is provided between the fixed pipe (18) and the filter two (14). The bottom end of the bend (25) is located below the filter two (14). One side of the bend (25) is connected to the filter two (14). A one-way valve five (26) is provided between the bend (25) and the fixed pipe (18). The input end of the one-way valve five (26) is connected to the fixed pipe (18), and the output end of the one-way valve five (26) is connected to the bend (25). A drain valve (27) is provided below the bend (25), and an inlet valve (28) is provided above the bend (25). The inlet valve (28) and the drain valve (27) are respectively connected to the bend (25).

5. The sodium methoxide collection and storage device according to claim 1, characterized in that: A control valve (29) is provided between the three-way valve (12) and the tank (1). A flange (30) is provided on one side of the control valve (29). The flange (30) is connected to the control valve (29). A sealing ring (31) made of elastic material is provided on the flange (30). The sealing ring (31) is squeezed between the flange (30) and the tank (1). The bottom of the one-way valve (3) is located inside the sealing ring (31) and the flange (30). The one-way valve (3) is connected to the control valve (29) through the inner cavity of the flange (30). A fixing ring (32) is fitted on the flange (30). The fixing ring (32) is installed on the tank (1).

6. The sodium methoxide collection and storage device according to claim 1, characterized in that: A master control valve (33) is provided between the filter (10) and the gas storage tank (9). The gas storage tank (9) is connected to the filter (10) through the master control valve (33). A temperature sensor (34) is provided between the filter (10) and the air pump (11). The filter (10) is connected to the air pump (11) through the temperature sensor (34). A pressure sensor (35) is provided between the air pump (11) and the three-way valve (12). The air pump (11) is connected to the three-way valve (12) through the pressure sensor (35).

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