Ventilation protection device for production of medicinal sodium bicarbonate

Abstract

The utility model discloses a ventilation protection device for medicinal sodium bicarbonate production, which comprises a carbonation tower, a liquid inlet pipe arranged on the right side of the top of the carbonation tower, an exhaust pipe with a valve arranged on the left side of the top of the carbonation tower, a liquid outlet with a valve arranged at the bottom of the carbonation tower, and a liquid flow meter arranged on the liquid inlet pipe; the gas inlet pipe penetrates through the top of the right side wall of the carbonation tower and is fixed on the carbonation tower, an electric valve is arranged on the gas inlet pipe, and a gas flow meter is arranged on the left side of the electric valve on the gas inlet pipe; the annular gas distribution pipe is fixed on the inner side of the carbonation tower and is communicated with the gas inlet pipe, and a plurality of aeration structures are uniformly arranged on the lower side of the gas distribution pipe along the circumferential direction of the gas distribution pipe; the stirring structure is rotationally arranged in the carbonation tower. Compared with the prior art, the carbonation tower has the advantages that the flow of carbonization gas entering the carbonation tower can be controlled, alkali liquor and the carbonization gas can be fully contacted and mixed, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical-grade sodium bicarbonate production, in particular to a ventilation protection device for pharmaceutical-grade sodium bicarbonate production. Background Art

[0002] Sodium bicarbonate is commonly known as baking soda, and its molecular formula is NaHCO3. In the production and preparation process of pharmaceutical grade sodium bicarbonate, soda ash is mainly used as raw material, and the soda ash is dissolved in the sodium bicarbonate alkali mother liquor to prepare an alkali solution with appropriate concentration, which is heated to 80°C, filtered through a filter and enters a carbonation tower. Carbonation gas is introduced into the carbonation tower for carbonation reaction to convert the sodium carbonate in the alkali solution into sodium bicarbonate and crystallize out, and then centrifugal separation and drying are performed to finally obtain the baking soda product. The carbonation gas used in this process is kiln gas, which is a gas with a CO2 volume content of 38% obtained by calcining limestone.

[0003] In the production process of pharmaceutical grade sodium bicarbonate, when carbonized gas is introduced into the interior of the carbonation tower, it is not convenient to control the intake amount of the carbonized gas according to the amount of alkali solution in the carbonation tower, and it is not convenient to fully mix the carbonized gas with the alkali solution, resulting in low reaction efficiency and a large amount of carbonized gas overflowing into the air. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above technical difficulties and provide a ventilation protection device for the production of pharmaceutical-grade sodium bicarbonate, which is convenient for controlling the intake amount of carbonized gas, can make the carbonized gas fully contact with alkali liquid, and reduce the carbonized gas overflowing into the air.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] A ventilation protection device for producing pharmaceutical grade sodium bicarbonate, comprising:

[0007] A carbonation tower, wherein a liquid inlet pipe is arranged on the right side of the top, an exhaust pipe with a valve is arranged on the left side of the top, and a liquid outlet with a valve is arranged at the bottom, and a liquid flow meter is arranged on the liquid inlet pipe;

[0008] An air inlet pipe passes through the top of the right side wall of the carbonation tower and is fixed on the carbonation tower. An electric valve is provided on the air inlet pipe, and a gas flow meter is provided on the air inlet pipe on the left side of the electric valve;

[0009] An annular air distribution pipe is fixed on the inner side of the carbonation tower and is connected to the air inlet pipe. A plurality of aeration structures are evenly arranged on the lower side of the air distribution pipe along the circumference of the air distribution pipe.

[0010] The stirring structure is rotatably arranged inside the carbonation tower.

[0011] As an improvement, the aeration structure includes an aeration pipe and a plurality of aeration heads, the aeration pipe is fixed on the inner side wall of the carbonation tower, and the top end is connected and fixed on the lower side of the air distribution pipe, and the plurality of aeration heads are evenly arranged on the aeration pipe along the axial direction of the aeration pipe, and the aeration heads are arranged toward the inner middle of the carbonation tower. Carbonized gas can flow from the air inlet pipe into the air distribution pipe, and enter the aeration pipe through the air distribution pipe, and enter the alkali solution through the aeration head, so as to be able to fully contact the alkali solution.

[0012] As an improvement, the stirring structure includes a stirring shaft and a plurality of stirring rods, the top end of the stirring shaft is rotatably arranged at the inner top of the carbonation tower, and the plurality of stirring rods are evenly fixed on the left and right sides of the stirring shaft along the axial direction of the stirring shaft, and a stirring motor is installed on the top of the carbonation tower, and the output shaft of the stirring motor is drivingly connected to the top end of the stirring shaft. The stirring shaft can drive the stirring rods to rotate to stir the alkali solution, so that the alkali solution can flow inside the carbonation tower, so that it can fully contact with the carbonized gas.

[0013] As an improvement, a controller is fixed on the side wall of the carbonation tower, and the controller is electrically controlled and connected to the liquid flow meter, the gas flow meter and the electric valve on the air inlet pipe, respectively, so that the flow rate of the carbonation gas entering the carbonation tower can be controlled according to the amount of alkali liquid flowing into the carbonation tower.

[0014] As an improvement, four supporting legs distributed in a rectangular shape are fixed to the bottom end of the carbonation tower.

[0015] The advantages of the utility model compared with the prior art are: the utility model can control the flow rate of the carbonized gas entering the carbonation tower according to the amount of alkali liquid flowing into the carbonation tower, and can also make the carbonized gas spray to the alkali liquid from multiple locations in the carbonation tower, so that the alkali liquid and the carbonized gas can be fully contacted, which is convenient for fully mixing the carbonized gas and the alkali liquid, improving the reaction efficiency, and avoiding a large amount of carbonized gas from overflowing into the air before reacting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic cross-sectional structure diagram of a ventilation protection device for producing pharmaceutical-grade sodium bicarbonate in the main viewing direction.

[0017] Figure 2 The utility model is a partial three-dimensional structural schematic diagram of a ventilation protection device for producing pharmaceutical-grade sodium bicarbonate.

[0018] As shown in the figure: 1. Carbonation tower; 2. Liquid inlet pipe; 3. Exhaust pipe; 4. Liquid outlet; 5. Liquid flow meter; 6. Air inlet pipe; 7. Electric valve; 8. Gas flow meter; 9. Gas distribution pipe; 10. Aeration pipe; 11. Aeration head; 12. Stirring shaft; 13. Stirring rod; 14. Stirring motor; 15. Controller; 16. Support legs. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] A ventilation protection device for producing pharmaceutical grade sodium bicarbonate, comprising:

[0022] The carbonation tower 1 is provided with a liquid inlet pipe 2 on the top right side, an exhaust pipe 3 with a valve on the top left side, and a liquid outlet 4 with a valve on the bottom, and the liquid inlet pipe 2 is provided with a liquid flow meter 5.

[0023] The air inlet pipe 6 passes through the top of the right side wall of the carbonation tower 1 and is fixed on the carbonation tower 1 . The air inlet pipe 6 is provided with an electric valve 7 , and a gas flow meter 8 is provided on the air inlet pipe 6 on the left side of the electric valve 7 .

[0024] The annular air distribution pipe 9 is fixed on the inner side of the carbonation tower 1 and is connected to the air inlet pipe 6. The lower side of the air distribution pipe 9 is evenly provided with a plurality of aeration structures along the circumference of the air distribution pipe 9. Specifically, the aeration structure includes an aeration pipe 10 and a plurality of aeration heads 11. The aeration pipe 10 is fixed on the inner side wall of the carbonation tower 1, and the top end is connected and fixed on the lower side of the air distribution pipe 9. The plurality of aeration heads 11 are evenly arranged on the aeration pipe 10 along the axial direction of the aeration pipe 10, and the aeration heads 11 are respectively arranged toward the inner middle of the carbonation tower 1.

[0025] The stirring structure is rotatably arranged inside the carbonation tower 1. Specifically, the stirring structure includes a stirring shaft 12 and a plurality of stirring rods 13. The top end of the stirring shaft 12 is rotatably arranged inside the top of the carbonation tower 1, and the plurality of stirring rods 13 are evenly fixed on the left and right sides of the stirring shaft 12 along the axial direction of the stirring shaft 12. A stirring motor 14 is installed on the top of the carbonation tower 1, and the output shaft of the stirring motor 14 is drivingly connected to the top end of the stirring shaft 12.

[0026] Specifically, a controller 15 is fixed on the side wall of the carbonation tower 1 , and the controller 15 is electrically controlled and connected to the liquid flow meter 5 , the gas flow meter 8 and the electric valve 7 on the air inlet pipe 6 .

[0027] Specifically, four supporting legs 16 distributed in a rectangular shape are fixed to the bottom end of the carbonation tower 1 .

[0028] It is worth noting that the liquid flow meter 5, electric valve 7, gas flow meter 8, stirring motor 14 and controller 15 used in the present invention are all existing equipment, and the use control method and circuit connection method of the above equipment are all existing technologies, and the present invention is connected to an external power supply.

[0029] When the utility model is implemented:

[0030] like Figure 1 As shown, alkali liquid is introduced into the interior of the carbonation tower 1 from the liquid inlet pipe 2, and the liquid flow meter 5 can detect the flow rate of the alkali liquid flowing into the carbonation tower 1, and then the electric valve 7 is opened, so that the carbonation gas can enter the interior of the carbonation tower 1 from the air inlet pipe 6, and the gas flow meter 8 can detect the flow rate of the carbonation gas flowing into the interior of the carbonation tower 1. The controller 15 analyzes the liquid flow data to set the required gas flow rate. When the amount of carbonation gas reaches the set value, the controller 15 can control the closing of the electric valve 7;

[0031] The carbonized gas enters the air distribution pipe 9 from the air inlet pipe 6, and then flows into the interior of each aeration pipe 10 through the air distribution pipe 9, and enters the alkali solution through each aeration head 11. The stirring motor 14 is started to drive the stirring rod 13 to stir the alkali solution, so that the alkali solution can flow in the carbonation tower 1 and be fully mixed with the carbonized gas, and the excess gas can be discharged to the outside from the exhaust pipe 3.

[0032] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A ventilation protection device for the production of pharmaceutical grade sodium bicarbonate, characterized in that: include: A carbonation tower (1) is provided with a liquid inlet pipe (2) on the right side of the top, an exhaust pipe (3) with a valve is provided on the left side of the top, and a liquid outlet (4) with a valve is provided at the bottom, and a liquid flow meter (5) is provided on the liquid inlet pipe (2); An air inlet pipe (6) passes through the top of the right side wall of the carbonation tower (1) and is fixed on the carbonation tower (1); an electric valve (7) is provided on the air inlet pipe (6); and a gas flow meter (8) is provided on the air inlet pipe (6) on the left side of the electric valve (7); An annular air distribution pipe (9) is fixed on the inner side of the carbonation tower (1) and is connected to the air inlet pipe (6). A plurality of aeration structures are evenly arranged on the lower side of the air distribution pipe (9) along the circumference of the air distribution pipe (9); The stirring structure is rotatably arranged inside the carbonation tower (1).

2. A ventilation protection device for producing pharmaceutical grade sodium bicarbonate according to claim 1, characterized in that: The aeration structure comprises an aeration pipe (10) and a plurality of aeration heads (11); the aeration pipe (10) is fixed on the inner wall of the carbonation tower (1), and the top end is connected to and fixed on the lower side of the air distribution pipe (9); the plurality of aeration heads (11) are evenly arranged on the aeration pipe (10) along the axial direction of the aeration pipe (10), and the aeration heads (11) are arranged toward the inner middle of the carbonation tower (1).

3. A ventilation protection device for producing pharmaceutical grade sodium bicarbonate according to claim 1, characterized in that: The stirring structure comprises a stirring shaft (12) and a plurality of stirring rods (13); the top end of the stirring shaft (12) is rotatably arranged on the inner top of the carbonation tower (1), and the plurality of stirring rods (13) are evenly fixed on the left and right sides of the stirring shaft (12) along the axial direction of the stirring shaft (12); a stirring motor (14) is installed on the top of the carbonation tower (1), and the output shaft of the stirring motor (14) is drivingly connected to the top end of the stirring shaft (12).

4. A ventilation protection device for producing pharmaceutical grade sodium bicarbonate according to claim 1, characterized in that: A controller (15) is fixed on the side wall of the carbonation tower (1), and the controller (15) is electrically controlled and connected to the liquid flow meter (5), the gas flow meter (8) and the electric valve (7) on the air inlet pipe (6).

5. A ventilation protection device for producing pharmaceutical grade sodium bicarbonate according to claim 1, characterized in that: Four supporting legs (16) distributed in a rectangular shape are fixed to the bottom end of the carbonation tower (1).

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