A thickener for baking soda production

Abstract

This utility model discloses a thickener for sodium bicarbonate production, including a settling tank. An overflow weir is installed at the upper part of the settling tank, and a guide channel is installed at the upper part of one side of the settling tank. A support base is fixedly installed at the middle of the outer surface of the rear end of the settling tank, and a premixing device is fixedly installed on the upper outer surface of the support base. The thickener for sodium bicarbonate production described in this utility model uses a motor-driven drive shaft, which drives a first agitator and a second agitator to rotate in opposite directions through belt transmission and gear meshing, forming a bidirectional stirring effect. This allows the material to be quickly and uniformly mixed in the cylindrical mixing chamber, avoiding excessively high or low local flocculant concentrations and ensuring a stable and reliable settling process.

Description

Technical Field

[0001] This utility model relates to the field of baking soda production technology, specifically to a thickener for baking soda production. Background Technology

[0002] In the production of baking soda (sodium bicarbonate), the thickener (or settling tank) is a key solid-liquid separation device. It is mainly used to concentrate the post-reaction suspension (such as a mixture of sodium bicarbonate crystals and mother liquor) to increase the solid content, facilitating subsequent processes such as filtration and drying. Traditional thickeners typically consist of a settling tank body, an overflow weir, and a guide channel, and their working principle relies primarily on gravity settling to achieve solid-liquid separation.

[0003] However, existing thickeners have the following problems in practical applications:

[0004] 1. Uneven mixing: During the sedimentation process, flocculants are usually added to promote the aggregation and sedimentation of solid particles. However, existing equipment lacks efficient premixing devices, resulting in poor mixing effect between flocculants and suspension, which affects sedimentation efficiency and the uniformity of the final product.

[0005] 2. Limited mixing effect: Although some equipment is equipped with a mixing mechanism, it is mostly unidirectional mixing, which is insufficient and makes it difficult to achieve full contact between flocculant and suspension, thereby reducing sedimentation speed and separation effect.

[0006] Therefore, we propose a thickener for sodium bicarbonate production. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides a thickener for sodium bicarbonate production. Through a pre-mixing device, the flocculant and suspension are uniformly mixed, improving the sedimentation effect and providing good stirring, which can effectively solve the problems in the background technology.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a thickener for sodium bicarbonate production includes a settling tank, an overflow weir installed at the upper part of the settling tank, a guide channel installed at the upper part of one side of the settling tank, a support base fixedly installed at the middle of the outer surface of the rear end of the settling tank, and a premixing device fixedly installed on the outer surface of the upper end of the support base. The premixing device includes a fixed base, a discharge valve, a protective shell, a motor, a first driven shaft, a feeding pipe, a through hole, a cylindrical mixing chamber, a drive shaft, a first pulley, a first gear, a belt, a second pulley, a first stirrer, a connecting arm, a second gear, a second driven shaft, a transmission chamber, and a second stirrer. The fixed base is fixed to the outer surface of the upper end of the support base, the protective shell is fixed to the rear end of the outer surface of the upper end of the fixed base, the feeding pipe is fixed to the front end of the outer surface of the upper end of the fixed base, the cylindrical mixing chamber is opened inside the front end of the fixed base, the through hole is opened at the rear end of the outer surface of the upper end of the fixed base, and the transmission chamber is opened inside the lower end of the fixed base.

[0011] Preferably, the lower end of the feeding pipe extends into the front end of the upper part of the cylindrical mixing chamber, the bottom of the through hole is connected to the upper part of the rear end of the transmission chamber, the first pulley, the belt and the second pulley are all located inside the protective shell, the drive shaft passes through the through hole, the first gear and the second gear are both located in the transmission chamber, and the discharge valve is fixed to the bottom of the front end of the fixed seat.

[0012] Preferably, the motor is fixed to the rear end of the upper outer surface of the protective shell, a coupling is provided between the drive shaft and the motor, the upper outer surface of the drive shaft is fixedly connected to the lower outer surface of the output shaft of the motor through the coupling, and sealed bearings are provided between the drive shaft, the fixed seat, and the protective shell, and the drive shaft is rotatably connected to the fixed seat and the protective shell through the sealed bearings.

[0013] Preferably, the first pulley is fixed to the outer wall of the upper part of the drive shaft, the first gear is fixed to the outer wall of the bottom of the drive shaft, the second pulley is fixed to the outer wall of the upper part of the first driven shaft, the first agitator is fixed to the lower part of the first driven shaft, and the belt drive is connected between the first pulley and the second pulley. Sealed bearings are provided between the first driven shaft and the fixed seat and the protective shell. The first driven shaft is rotatably connected to the fixed seat and the protective shell through the sealed bearings.

[0014] Preferably, the second gear is fixed to the outer wall of the lower part of the second driven shaft, one side of the outer surface of the first gear meshes with one side of the outer surface of the second gear, the upper end of the second driven shaft extends into the middle of the lower end of the cylindrical mixing chamber, and the upper end of the outer surface of the second driven shaft is fixedly connected to the middle of the connecting arm, and the second agitator is fixed on the left and right sides of the upper end of the connecting arm.

[0015] Preferably, a sealed bearing is provided between the second driven shaft and the fixed seat, and the second driven shaft is rotatably connected to the fixed seat through the sealed bearing.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a thickener for sodium bicarbonate production, which has the following beneficial effects:

[0018] 1. This thickener for sodium bicarbonate production, by adding a premixing device, allows the flocculant and suspension to be fully mixed before entering the settling tank, thereby improving the dispersibility and efficiency of the flocculant, enhancing the settling effect, reducing solid-liquid separation time, and improving production efficiency.

[0019] 2. The thickener for sodium bicarbonate production uses a motor-driven drive shaft in the premixing device, which drives the first and second agitators to rotate in opposite directions through belt transmission and gear meshing structure, forming a bidirectional stirring effect. This allows the material to be mixed quickly and evenly in the cylindrical mixing chamber, avoiding excessively high or low local flocculant concentrations and ensuring a stable and reliable sedimentation process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a thickener for sodium bicarbonate production according to this utility model.

[0021] Figure 2 This is a schematic diagram of the premixing device in a thickener for sodium bicarbonate production according to this utility model.

[0022] Figure 3 This is a partial cross-sectional view of the fixing seat in a thickener for sodium bicarbonate production according to this utility model.

[0023] Figure 4 This is a side cross-sectional view of the premixing device in a thickener for sodium bicarbonate production according to this utility model.

[0024] In the diagram: 1. Settling tank; 2. Overflow weir; 3. Guide channel; 4. Support base; 5. Premixing device; 6. Fixed base; 7. Discharge valve; 8. Protective shell; 9. Motor; 10. First driven shaft; 11. Feeding pipe; 12. Through hole; 13. Cylindrical mixing chamber; 14. Drive shaft; 15. First pulley; 16. First gear; 17. Belt; 18. Second pulley; 19. First agitator; 20. Connecting arm; 21. Second gear; 22. Second driven shaft; 23. Transmission chamber; 24. Second agitator. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] This embodiment is a thickener for sodium bicarbonate production.

[0027] like Figure 1-4 As shown, the device includes a settling tank 1, an overflow weir 2 installed on the upper part of the settling tank 1, a guide channel 3 installed on the upper part of one side of the settling tank 1, a support base 4 fixedly installed in the middle of the outer surface of the rear end of the settling tank 1, and a premixing device 5 fixedly installed on the upper outer surface of the support base 4. The premixing device 5 includes a fixed base 6, a discharge valve 7, a protective shell 8, a motor 9, a first driven shaft 10, a feeding pipe 11, a through hole 12, a cylindrical mixing chamber 13, a drive shaft 14, a first pulley 15, a first gear 16, a belt 17, and a second... The system comprises two pulleys 18, a first agitator 19, a connecting arm 20, a second gear 21, a second driven shaft 22, a transmission cavity 23, and a second agitator 24. The fixed base 6 is fixed to the upper outer surface of the support base 4, the protective shell 8 is fixed to the rear end of the upper outer surface of the fixed base 6, the feeding pipe 11 is fixed to the front end of the upper outer surface of the fixed base 6, the cylindrical mixing cavity 13 is opened inside the front end of the fixed base 6, the through hole 12 is opened at the rear end of the upper outer surface of the fixed base 6, and the transmission cavity 23 is opened inside the lower end of the fixed base 6.

[0028] The lower end of the feeding pipe 11 extends into the front end of the upper part of the cylindrical mixing chamber 13. The bottom of the through hole 12 is connected to the upper part of the rear end of the transmission chamber 23. The first pulley 15, belt 17, and second pulley 18 are all located inside the protective shell 8. The drive shaft 14 passes through the through hole 12. The first gear 16 and second gear 21 are both located in the transmission chamber 23. The discharge valve 7 is fixed to the bottom of the front end of the fixed seat 6. The motor 9 is fixed to the rear end of the upper outer surface of the protective shell 8. A coupling is provided between the drive shaft 14 and the motor 9. The upper outer surface of the drive shaft 14 is fixedly connected to the lower outer surface of the output shaft in the motor 9 through the coupling. Sealed bearings are provided between the drive shaft 14, the fixed seat 6, and the protective shell 8. The drive shaft 14 is rotatably connected to the fixed seat 6 and the protective shell 8 through the sealed bearings. The first pulley 15 is fixed to the outer wall of the upper part of the drive shaft 14. The first gear 16 is fixed to the outer wall of the bottom of the drive shaft 14. The second pulley 15 is fixed to the outer wall of the lower part of the drive shaft 14. 8 is fixed to the outer wall of the upper part of the first driven shaft 10, the first agitator 19 is fixed to the lower part of the first driven shaft 10, and the belt 17 is connected between the first pulley 15 and the second pulley 18. Sealed bearings are provided between the first driven shaft 10 and the fixed seat 6 and the protective shell 8. The first driven shaft 10 is rotatably connected to the fixed seat 6 and the protective shell 8 through the sealed bearings. The second gear 21 is fixed to the outer wall of the lower part of the second driven shaft 22. One side of the outer surface of the first gear 16 meshes with one side of the outer surface of the second gear 21. The upper end of the second driven shaft 22 extends into the middle of the lower end of the cylindrical mixing chamber 13, and the upper end of the outer surface of the second driven shaft 22 is fixedly connected to the middle of the connecting arm 20. The second agitator 24 is fixed on the left and right sides of the upper end of the connecting arm 20. Sealed bearings are provided between the second driven shaft 22 and the fixed seat 6. The second driven shaft 22 is rotatably connected to the fixed seat 6 through the sealed bearings.

[0029] It should be noted that this utility model is a thickener for sodium bicarbonate production. The settling tank 1, overflow weir 2, and guide trough 3 described in this article are all existing technologies and can be effectively known to those skilled in the art. Further details will not be provided. The premixing device 5 adds the material to be mixed into the cylindrical mixing chamber 13 through the feeding pipe 11. The motor 9 is started, and the motor 9 drives the drive shaft 14 to rotate. The drive shaft 14 drives the first pulley 15 and the first gear 16 to rotate. The first pulley 15 drives the second pulley 18 to rotate in the same direction via the belt 17. The first gear 16 drives the second driven shaft 22 to rotate in the opposite direction via the second gear 21. The second pulley 18 drives the first driven shaft 10 and the first agitator 19 to rotate. Thus, the second agitator 24 and the first agitator 19 stir in opposite directions, improving the mixing effect and efficiency.

[0030] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A thickener for sodium bicarbonate production, comprising a settling tank (1), wherein an overflow weir (2) is installed on the upper part of the settling tank (1), and a guide channel (3) is installed on the upper part of one side of the settling tank (1), characterized in that: A support base (4) is fixedly installed in the middle of the outer surface of the rear end of the settling tank (1). A premixing device (5) is fixedly installed on the upper outer surface of the support base (4). The premixing device (5) includes a fixed base (6), a discharge valve (7), a protective shell (8), a motor (9), a first driven shaft (10), a feeding pipe (11), a through hole (12), a cylindrical mixing chamber (13), a drive shaft (14), a first pulley (15), a first gear (16), a belt (17), a second pulley (18), a first agitator (19), and a connecting arm (20). The second gear (21), the second driven shaft (22), the transmission cavity (23) and the second stirrer (24) are provided. The fixed seat (6) is fixed on the upper outer surface of the support seat (4). The protective shell (8) is fixed on the rear end of the upper outer surface of the fixed seat (6). The feeding pipe (11) is fixed on the front end of the upper outer surface of the fixed seat (6). The cylindrical mixing cavity (13) is opened inside the front end of the fixed seat (6). The through hole (12) is opened at the rear end of the upper outer surface of the fixed seat (6). The transmission cavity (23) is opened inside the lower end of the fixed seat (6).

2. The thickener for sodium bicarbonate production according to claim 1, characterized in that: The lower end of the feeding pipe (11) extends into the front end of the upper part of the cylindrical mixing chamber (13). The bottom of the through hole (12) is connected to the upper part of the rear end of the transmission chamber (23). The first pulley (15), belt (17) and second pulley (18) are all located inside the protective shell (8). The drive shaft (14) passes through the through hole (12). The first gear (16) and second gear (21) are both located in the transmission chamber (23). The discharge valve (7) is fixed at the bottom of the front end of the fixed seat (6).

3. A thickener for sodium bicarbonate production according to claim 2, characterized in that: The motor (9) is fixed at the rear end of the upper outer surface of the protective shell (8). A coupling is provided between the drive shaft (14) and the motor (9). The upper outer surface of the drive shaft (14) is fixedly connected to the lower outer surface of the output shaft in the motor (9) through the coupling. Sealed bearings are provided between the drive shaft (14), the fixed seat (6), and the protective shell (8). The drive shaft (14) is rotatably connected to the fixed seat (6) and the protective shell (8) through the sealed bearings.

4. A thickener for sodium bicarbonate production according to claim 3, characterized in that: The first pulley (15) is fixed on the outer wall of the upper part of the drive shaft (14), the first gear (16) is fixed on the outer wall of the bottom of the drive shaft (14), the second pulley (18) is fixed on the outer wall of the upper part of the first driven shaft (10), the first stirrer (19) is fixed on the lower part of the first driven shaft (10), and the belt (17) is connected between the first pulley (15) and the second pulley (18). Sealed bearings are provided between the first driven shaft (10) and the fixed seat (6) and the protective shell (8). The first driven shaft (10) is rotatably connected to the fixed seat (6) and the protective shell (8) through the sealed bearings.

5. A thickener for sodium bicarbonate production according to claim 4, characterized in that: The second gear (21) is fixed to the outer wall of the lower part of the second driven shaft (22). The outer surface of one side of the first gear (16) meshes with the outer surface of one side of the second gear (21). The upper end of the second driven shaft (22) extends into the middle of the lower end of the cylindrical mixing chamber (13), and the outer surface of the upper end of the second driven shaft (22) is fixedly connected to the middle of the connecting arm (20). The second agitator (24) is fixed on the left and right sides of the outer surface of the upper end of the connecting arm (20).

6. A thickener for sodium bicarbonate production according to claim 5, characterized in that: A sealed bearing is provided between the second driven shaft (22) and the fixed seat (6), and the second driven shaft (22) is rotatably connected to the fixed seat (6) through the sealed bearing.

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