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CN-224225818-U - Collecting and storing device for sodium methoxide

CN224225818UCN 224225818 UCN224225818 UCN 224225818UCN-224225818-U

Abstract

The utility model relates to the technical field of storage of sodium methoxide, in particular to a sodium methoxide collecting and storing device, which comprises a tank body with an opening at the top and a tank cover buckled at the top end of the tank body, wherein an air inlet mechanism is arranged at the bottom of the tank body, an air exhaust mechanism is arranged on the tank cover, a drying system is arranged on one side of the tank body, the air inlet mechanism comprises a first check valve and a first blocking cover sleeved on the first check valve, a first filter hole is formed in the first blocking cover, the output end of the first check valve is communicated with an inner cavity of the tank body through the first filter hole, the air exhaust mechanism comprises a second check valve and a second blocking cover sleeved on the second check valve, a second filter hole is formed in the second 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 check valve which are sequentially arranged on one side of the air storage tank along the direction away from the air storage tank. The utility model provides a collecting and storing device for sodium methoxide, which is convenient for protecting gas to fill a storage tank, simplifies the storage operation and improves the storage stability.

Inventors

  • ZHONG YOUZHENG
  • SONG YAN
  • CHEN WEIWEI
  • SONG ZHENYI
  • Duan Gaoying
  • Song changguang
  • PAN JUANJUAN

Assignees

  • 河南盛宏丰化工有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (6)

  1. 1. The sodium methoxide collecting and storing device comprises a tank body (1) with an opening at the top and a tank cover (2) buckled at the top end of the tank body (1), and is characterized in that an air inlet mechanism is arranged at the bottom of the tank body (1), an exhaust mechanism is arranged on the tank cover (2), and a drying system is arranged at one side of the tank body (1); The air inlet mechanism comprises a first check valve (3) and a first material blocking cover (4) sleeved on the first check valve (3), the first check valve (3) and the first material blocking cover (4) are respectively embedded on a bottom plate of the tank body (1), a first filter hole (5) is formed in the first material blocking cover (4), and the output end of the first check valve (3) is communicated with the inner cavity of the tank body (1) through the first filter hole (5); The exhaust mechanism comprises a check valve II (6) and a second material blocking cover (7) sleeved on the check valve II (6), the check valve II (6) and the second material blocking cover (7) are respectively embedded on the tank cover (2), a filter hole II (8) is formed in the second material blocking cover (7), and the output end of the check valve II (6) is communicated with the inner cavity of the tank body (1) through the filter hole II (8); The drying system comprises an air storage tank (9), a first filter (10), an air pump (11), a first three-way valve (12) and a third one-way valve (13) are sequentially arranged on one side of the air storage tank (9) along the direction away from the air storage tank (9), the conveying end of the first three-way valve (12) is communicated with the air storage tank (9) through the air pump (11) and the first filter (10), the first output end of the first three-way valve (12) is communicated with the input end of the first one-way valve (3), and the second output end of the first three-way valve (12) is communicated with the air storage tank (9) through the third one-way valve (13).
  2. 2. The device for collecting and storing sodium methoxide according to claim 1, wherein one side of the second check valve (6) is sequentially provided with the second filter (14), the second three-way valve (15) and the fourth check valve (16) along the direction from the second check valve (6) to the air storage tank (9), the output end of the fourth check valve (16) and the output end of the third check valve (13) are both communicated with the air storage tank (9), the input end of the second three-way valve (15) is communicated with the output end of the second check valve (6) through the second filter (14), the first output end of the second three-way valve (15) is communicated with the input end of the fourth check valve (16), one side of the second three-way valve (15) is provided with an exhaust valve (17), and the bottom end of the exhaust valve (17) is communicated with the second output end of the second three-way valve (15).
  3. 3. The sodium methoxide collecting and storing device according to claim 2, wherein a fixed pipe (18) is arranged between the second check valve (6) and the second filter (14), a sleeve (19) is movably sleeved on the fixed pipe (18), the output end of the second check valve (6) is positioned in the sleeve (19), the inner cavity diameter of the sleeve (19) is matched with the outer wall diameter of the fixed pipe (18), a screw (20) is arranged at the bottom of the fixed pipe (18), one end of the screw (20) is arranged on the outer wall of the fixed pipe (18), a sleeve groove (21) is arranged on the top side wall of the sleeve (19), the screw (20) is movably sleeved in the sleeve groove (21), a nut (22) is sleeved on the screw (20), the sleeve (19) is clamped on the fixed pipe (18) through the nut (22), the fixed pipe (18) below the screw (20) is provided with a first sealing groove which is arranged on the outer wall of the fixed pipe (18), the first sealing groove is sleeved with a sealing ring (23) made of elastic material, the first sealing ring (23) is sleeved with an interference sleeve (19), the second sealing ring (24) is sleeved in the sealing groove (19) which is provided with the elastic sealing ring, the second sealing ring (24) is extruded on the tank cover (2).
  4. 4. The sodium methoxide collecting and storing device according to claim 3, wherein a U-shaped bent pipe (25) is arranged between the fixed pipe (18) and the second filter (14), the bottom end of the bent pipe (25) is located below the second filter (14), one side of the bent pipe (25) is communicated with the second filter (14), a check valve five (26) is arranged between the bent pipe (25) and the fixed pipe (18), the input end of the check valve five (26) is communicated with the fixed pipe (18), the output end of the check valve five (26) is connected with the bent pipe (25), a drain valve (27) is arranged below the bent pipe (25), a liquid inlet valve (28) is arranged above the bent pipe (25), and the liquid inlet valve (28) and the drain valve (27) are respectively communicated with the bent pipe (25).
  5. 5. The device for collecting and storing sodium methoxide according to claim 1, wherein a control valve (29) is arranged between the first three-way valve (12) and the tank body (1), a flange plate (30) is arranged on one side of the control valve (29), the flange plate (30) is communicated with the control valve (29), a sealing ring III (31) made of elastic materials is arranged on the flange plate (30), the sealing ring III (31) is extruded between the flange plate (30) and the tank body (1), the bottom of the first one-way valve (3) is positioned in the sealing ring III (31) and the flange plate (30), the first one-way valve (3) is communicated with the control valve (29) through an inner cavity of the flange plate (30), a fixing ring (32) is sleeved on the flange plate (30), and the fixing ring (32) is arranged on the tank body (1).
  6. 6. The device for collecting and storing sodium methoxide according to claim 1, wherein a total control valve (33) is arranged between the first filter (10) and the air storage tank (9), the air storage tank (9) is communicated with the first filter (10) through the total control valve (33), a temperature sensor (34) is arranged between the first filter (10) and the air pump (11), the first filter (10) is communicated with the air pump (11) through the temperature sensor (34), a pressure sensor (35) is arranged between the air pump (11) and the first three-way valve (12), and the air pump (11) is communicated with the first three-way valve (12) through the pressure sensor (35).

Description

Collecting and storing device for sodium methoxide Technical Field The utility model relates to the technical field of storage of sodium methoxide, in particular to a collecting and storing device of sodium methoxide. Background Sodium methoxide is a mature chemical product, and the application field of the sodium methoxide covers a plurality of industries such as medicines, pesticides, new energy sources and the like. In the pharmaceutical manufacture, the compound is mainly used for preparing intermediate raw materials of medicaments such as sulfadiazine, sulfa synergists, vitamin A and the like, and plays a key role in synthesizing cephalosporin antibiotics. As an alkaline catalyst for organic synthesis, sodium methoxide can promote reactions such as claisen condensation, aldol condensation and the like, is used for synthesizing pyrethroid compounds in pesticide production, and catalyzes transesterification of fatty acid methyl ester in biodiesel preparation. The industrial sodium methoxide product has two forms of solid and liquid, wherein the solid is sodium methoxide pure product, the sodium methoxide content is more than 97%, and the sodium methoxide product is white amorphous powder at normal temperature and normal pressure, and has strong hygroscopicity. The liquid is a methanol solution of sodium methoxide, which is colorless or yellowish viscous liquid, and the content of sodium methoxide in the methanol solution of sodium methoxide is 28.5% -31%. Because of the extremely active chemical property of sodium methoxide, hydrolysis reaction immediately occurs when meeting water, and sodium hydroxide with strong corrosiveness and inflammable methanol are generated. Sodium methoxide is particularly sensitive to air and water, and for this reason it is necessary to ensure that the storage environment for sodium methoxide remains dry, reducing the air content in the sodium methoxide storage cavity. In order to avoid that air comes into contact with sodium methoxide and thus causes unnecessary chemical reactions, a storage tank is used to store sodium methoxide. Through the gas injection interface at the top of the storage tank, anhydrous shielding gas is filled towards the storage tank, so that the safety of sodium methoxide storage is improved. However, because the number of the gas injection ports of the storage tank is unique, when the protective gas is filled into the storage tank, the air in the storage tank needs to be extruded by the aid of the protective gas input by the gas injection ports, but the air is not completely discharged, so that the whole storage tank is difficult to be completely filled with the protective gas, and a small amount of sodium methoxide still can be decomposed in the subsequent storage process by the aid of the residual air, so that the storage effect of sodium methoxide is affected. And the storage tanks are provided with manual air valves so as to control the opening or closing of the air inlets and the air outlets, when a plurality of storage tanks are required to be stored, operators need to manually open the air inlet valve of each storage tank one by one, and after the air charging operation is carried out, the air valves are closed one by one. This process is not only cumbersome but also time consuming, especially when a large number of storage tanks need to be handled, which can be a significant inefficiency. In addition, in order to charge the storage tank with the anhydrous protection gas, the protection gas needs to be pressurized by the air pump, and in order to prevent the pipe from being excessively pressurized when the storage tank is replaced, the air pump needs to be closed. The repeated closing or starting of the air pump is required, and such frequent operation is not only troublesome, but may also affect the stability and the service life of the air pump. In view of the above problems, there is room for improvement in collection and storage of sodium methoxide so that the protective gas fills the storage tank, improving the convenience of operation and the stability of the aeration process. Ensure the safety and stability of sodium methoxide in the storage process. Disclosure of Invention Aiming at the defects of the prior art, the utility model provides a sodium methoxide collecting and storing device which is convenient for protecting gas to fill a storage tank, simplifies the storage operation and improves the storage stability, and is used for overcoming the defects in the prior art. The technical scheme includes that the sodium methoxide collecting and storing device comprises a tank body with an opening at 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 air exhaust mechanism is arranged on the tank cover, a drying system is arranged on one side of the tank body, the air inlet mechanism comprises a first check valve and a first material blocking cover sleeved