Carboxylic acid product drying vacuum apparatus

Abstract

The utility model discloses carboxylic acid product drying vacuum device belongs to vacuum drying technical field. Mainly includes mounting bracket, drying assembly, drying assembly has inner jar, exhaust component, exhaust component includes the bottom bracket, this bottom bracket is installed one end at above mounting bracket, and at least two groups of liquid pump are installed on the bottom bracket, and the input of at least two groups of liquid pump is commonly provided with second shunt pipe, and the storage box is installed on the bottom bracket, and the venturi tube is installed on the storage box, and the upper end of venturi tube is provided with exhaust pipe, and the upper end of venturi tube is provided with at least two groups of liquid inlet pipe, and the first shunt pipe is connected on liquid inlet pipe, and the other end of first shunt pipe is connected with the output of liquid pump. Carboxylic acid product drying vacuum device of the application, through the setting of exhaust component, when discharging acid gas, through venturi tube into storage box, reached the effect that avoided acidic gas directly with pump body contact.

Description

Technical Field

[0001] This utility model relates to the field of vacuum drying technology, specifically to a vacuum device for drying carboxylic acid products. Background Technology

[0002] Carboxylic acid products are a class of organic compounds containing carboxyl groups (-COOH), which have unique chemical properties and a wide range of applications. In the manufacturing process of carboxylic acid products, they need to be vacuum dried to ensure the quality of the subsequent products.

[0003] For example, the patent with announcement number CN201729773U specifically discloses a vacuum drying device for polycarboxylate superplasticizer. The device puts the mixed material into a vacuum dryer. Under vacuum conditions, steam is used as a heat source. Sufficient heat is supplied through conduction heating to make evaporation and boiling occur simultaneously, accelerating the vaporization rate. At the same time, the vacuum pump quickly extracts the vaporized steam.

[0004] While the aforementioned patent can achieve material drying, the vapor extracted from the evaporated material is directly drawn out by a vacuum pump. However, when drying carboxylic acid products, the carboxylic acid undergoes cyclization, hydrolysis, and acidification reactions before entering a centrifuge, and the solid enters a rake dryer for drying. Therefore, the vapor produced during drying is acidic and corrosive. This acidic gas passes directly through the interior of the vacuum pump, which may corrode the vacuum pump after prolonged use, thus affecting its operation.

[0005] Therefore, it is necessary to provide a vacuum drying device for carboxylic acid products to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a vacuum device for drying carboxylic acid products, which achieves the effect of avoiding direct contact between acidic gas and pump body.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is: a vacuum drying device for carboxylic acid products, including a mounting frame;

[0009] A drying assembly, which is mounted on a mounting frame, has an inner tank suitable for drying;

[0010] Exhaust assembly, mounted on a mounting bracket, includes:

[0011] A base frame is installed at one end of the aforementioned mounting bracket. At least two sets of liquid pumps are mounted on the base frame, and the input ends of the at least two sets of liquid pumps are provided with a second shunt pipe.

[0012] A storage tank, which is mounted on a base frame, with the end of the second diverter pipe away from the liquid pump extending into the interior of the storage tank;

[0013] A venturi tube is installed on the storage box, and an exhaust pipe is provided at the upper end of the venturi tube;

[0014] At least two sets of inlet pipes are provided at the upper end of the venturi tube;

[0015] The first diverter pipe has one end connected to the inlet pipe and the other end connected to the output end of the liquid pump.

[0016] Furthermore, the storage tank is equipped with a drain pipe, the lower end of which extends into the interior of the storage tank, and one end of which extends into the interior of the inner tank.

[0017] Furthermore, the drying assembly includes an outer tank mounted on a mounting bracket, an inner tank disposed inside the outer tank, and both ends of the inner and outer tanks are fitted with covers.

[0018] Furthermore, both the outer and inner tanks are equipped with feed pipes and exhaust pipes, and a circulation pipe is wound around the outer wall of the inner tank.

[0019] Furthermore, both the inner and outer tanks are equipped with discharge pipes at the bottom, and valves are installed on the discharge pipes.

[0020] Furthermore, a motor is installed on one of the cover plates, and a rotating shaft is installed at the output end of the motor. The rotating shaft is rotatably mounted on both cover plates, and at least two sets of stirring blades are provided on the rotating shaft.

[0021] By adopting the above technical solution, this utility model has the following beneficial effects: by setting the exhaust component, when acidic gas is discharged, it enters the storage tank through the Venturi tube, thereby avoiding direct contact between the acidic gas and the pump body. Attached Figure Description

[0022] Figure 1 This is an overall schematic diagram of the vacuum drying apparatus for carboxylic acid products in this application;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 Another sectional view of the whole;

[0025] The following are the labeling elements in the figure:

[0026] 1. Mounting bracket;

[0027] 2. Drying assembly; 21. Outer tank; 201. Cover plate; 22. Feed pipe; 23. Exhaust pipe; 24. Circulation pipe; 25. Motor; 26. Discharge pipe; 27. Inner tank; 28. Rotating shaft; 29. ​​Stirring blades;

[0028] 3. Exhaust assembly; 31. Exhaust pipe; 32. Venturi tube; 33. Liquid inlet pipe; 34. First diversion pipe; 35. Storage tank; 36. Second diversion pipe; 37. Base frame; 38. Liquid pump; 39. Drain pipe. Detailed Implementation

[0029] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] like Figure 1 and Figure 3 As shown, this application provides a vacuum drying apparatus for carboxylic acid products, including a mounting frame 1 on which a drying component 2 is mounted. The drying component 2 is used to dry the carboxylic acid products. Specifically:

[0031] The drying assembly 2 includes an outer tank 21 fixedly mounted on a mounting frame 1. An inner tank 27 is provided inside the outer tank 21. Both ends of the inner tank 27 and the outer tank 21 are fixedly mounted with cover plates 201 to seal the ends of the inner tank 27 and the outer tank 21.

[0032] Both the outer tank 21 and the inner tank 27 are equipped with a feed pipe 22 and an air extraction pipe 23. The feed pipe 22 is suitable for introducing the carboxylic acid product into the interior of the inner tank 27. The air extraction pipe can be connected to an external air extraction device so that after the carboxylic acid product enters the interior of the inner tank 27, the air in the inner tank 27 is extracted by the air extraction device until it is in a "vacuum state".

[0033] A circulation pipe 24 is wound around the outer wall of the inner tank 27. The circulation pipe 24 can be connected to an external heating device, and the heating medium is circulated into the circulation pipe 24 under the drive of the heating device to heat the inner tank 27.

[0034] A motor 25 is fixedly installed on one of the sets of cover plates 201. A rotating shaft 28 is installed at the output end of the motor 25. The rotating shaft 28 is rotatably installed on both sets of cover plates 201. Multiple sets of stirring blades 29 are provided on the rotating shaft 28 to stir the carboxylic acid product during drying and speed up the drying process.

[0035] Both the inner tank 27 and the outer tank 21 are provided with a discharge pipe 26 at the bottom. The discharge pipe 26 is equipped with a valve (not shown in the figure) so that after drying, the valve can be opened to discharge the carboxylic acid product through the discharge pipe 26.

[0036] An exhaust assembly 3 is provided on the mounting frame 1, which is adapted to exhaust the acidic gas generated during drying from the inner tank 27;

[0037] like Figures 1-3 As shown, the exhaust assembly 3 includes a base frame 37 fixedly installed at one end of the mounting bracket 1, and a storage box 35 is fixedly installed on the base frame 37. The storage box 35 stores alkaline water inside.

[0038] Multiple sets of liquid pumps 38 are fixedly installed on the base frame 37. The input ends of the multiple sets of liquid pumps 38 are provided with a second diversion pipe 36. The end of the second diversion pipe 36 away from the liquid pumps 38 extends into the interior of the storage tank 35. At the same time, the output ends of the multiple sets of liquid pumps 38 are provided with a first diversion pipe 34.

[0039] So that the alkaline water in the storage tank 35 can be extracted and discharged through the first diversion pipe 34 under the drive of the second diversion pipe 36;

[0040] A venturi tube 32 is provided on the storage tank 35. The bottom end of the venturi tube 32 extends into the interior of the storage tank 35, and an exhaust pipe 31 is provided at the top end of the venturi tube 32. The end of the exhaust pipe 31 away from the storage tank 35 extends into the interior of the inner tank 27. At the same time, multiple sets of liquid inlet pipes 33 are provided at the upper end of the venturi tube 32, and one end of the first diversion pipe 34 is connected to the liquid inlet pipe 33.

[0041] When the alkaline water is discharged from the first diversion pipe 34, the alkaline water can be continuously introduced into the upper end of the Venturi tube 32 through the inlet pipe 33. The flow rate of the alkaline water is amplified through the Venturi tube 32 and flows into the storage tank 35 from the bottom end of the Venturi tube 32. At this time, the continuous circulation of alkaline water can be introduced into the Venturi tube 32, which will create a negative pressure at the upper end of the Venturi tube 32, thereby generating a negative pressure inside the exhaust pipe 31, and thus the gas in the inner tank 27 can be extracted through the exhaust pipe 31.

[0042] Therefore, when drying carboxylic acid products, the acidic gas generated during drying can be introduced into the storage tank 35 through the Venturi tube 32, and the acidic gas and other light components can be neutralized directly by alkaline water, avoiding direct contact with the inside of the pump body, thus preventing corrosion of the pump body.

[0043] A drain pipe 39 is provided on the storage tank 35 so that the alkaline water in the storage tank 35 can be discharged through the drain pipe 39.

[0044] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vacuum drying apparatus for carboxylic acid products, characterized in that: include: Mounting bracket (1); A drying assembly (2) is disposed on the mounting bracket (1) and has an inner tank (27) suitable for drying. An exhaust assembly (3) is disposed on the mounting bracket (1), the exhaust assembly (3) comprising: A base frame (37) is installed at one end of the mounting bracket (1). At least two sets of liquid pumps (38) are installed on the base frame (37). The input ends of the at least two sets of liquid pumps (38) are provided with a second shunt pipe (36). Storage tank (35), which is mounted on the base frame (37), with the second diverter pipe (36) extending into the interior of the storage tank (35) at one end away from the liquid pump (38); Venturi tube (32), which is installed on the storage box (35), and an exhaust pipe (31) is provided at the upper end of the venturi tube (32). At least two sets of inlet pipes (33) are provided at the upper end of the venturi tube (32); A first diversion pipe (34) is connected at one end to the inlet pipe (33) and at the other end to the output end of the liquid pump (38).

2. The vacuum drying apparatus for carboxylic acid products according to claim 1, characterized in that: The storage tank (35) is provided with a drain pipe (39), the lower end of the venturi tube (32) extends into the interior of the storage tank (35), and one end of the exhaust pipe (31) extends into the interior of the inner tank (27).

3. The vacuum drying apparatus for carboxylic acid products according to claim 2, characterized in that: The drying assembly (2) includes an outer tank (21) mounted on the mounting frame (1), an inner tank (27) disposed inside the outer tank (21), and a cover plate (201) installed at both ends of the inner tank (27) and the outer tank (21).

4. The vacuum drying apparatus for carboxylic acid products according to claim 3, characterized in that: Both the outer tank (21) and the inner tank (27) are provided with a feed pipe (22) and an air extraction pipe (23), and a circulation pipe (24) is wound around the outer wall of the inner tank (27).

5. The vacuum drying apparatus for carboxylic acid products according to claim 4, characterized in that: Both the inner tank (27) and the outer tank (21) are provided with a discharge pipe (26) at the bottom, and a valve is provided on the discharge pipe (26).

6. The vacuum drying apparatus for carboxylic acid products according to claim 5, characterized in that: A motor (25) is installed on one of the cover plates (201), and a rotating shaft (28) is installed at the output end of the motor (25). The rotating shaft (28) is rotatably installed on the two sets of cover plates (201), and at least two sets of stirring blades (29) are provided on the rotating shaft (28).

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