Uniform mixing mechanism for NMP (N-Methyl Pyrrolidone) materials in large storage tank

Abstract

The utility model discloses a uniform mixing mechanism for NMP (N-Methyl Pyrrolidone) materials in a large storage tank, which relates to the technical field of material storage and comprises a storage tank, and a circulating component for uniformly mixing the materials is arranged on the outer side of the storage tank; and the circulating assembly comprises a circulating pump, a water inlet of the circulating pump is provided with a discharging pipe, and the end of the discharging pipe penetrates into the storage tank along the tangent line of the left side of the storage tank. According to the uniform mixing mechanism for the NMP materials in the large storage tank, the materials form rotational flow in the storage tank through a circulating pump and a tangential feeding and discharging mode, the materials with different densities and viscosities are fully blended, uniform distribution is ensured, meanwhile, the materials do not depend on traditional stirring blades in the circulating uniform mixing process, and the uniform mixing efficiency is improved. The risk that the stirring blades bear huge counter-acting force and are deformed and damaged is avoided, the cost of frequent maintenance and part replacement caused by equipment damage is reduced, the reliability of the equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of material storage, in particular to a mixing mechanism for NMP materials in a large storage tank. Background Art

[0002] In industries such as chemical engineering and pharmaceuticals, NMP is a commonly used solvent and reaction medium. During production and storage, NMP materials usually need to be stored in large storage tanks. However, due to the characteristics of NMP materials such as density and viscosity, as well as the large scale of the storage tanks, it is easy to cause uneven phenomena such as stratification and precipitation of NMP materials in the storage tanks, affecting the quality and use effect of the materials.

[0003] Currently, the common mixing methods for storage tanks mainly include mechanical stirring. However, mechanical stirring still has some problems: during the traditional mechanical stirring process, when the motor drives the stirring blades to rotate, the materials in the storage tank will generate a strong resistance to the stirring blades, which easily causes the stirring blades to bear excessive stress. Under long-term action, the stirring blades are prone to deformation or even damage. At the same time, it also increases the load on the motor, leading to overheating or even damage of the motor. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a mixing mechanism for NMP materials in a large storage tank, which solves the problems that the materials in the storage tank will generate a strong resistance to the stirring blades, easily causes the stirring blades to bear excessive stress, and under long-term action, the stirring blades are prone to deformation or even damage. At the same time, it also increases the load on the motor, leading to overheating or even damage of the motor.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: a mixing mechanism for NMP materials in a large storage tank, including a storage tank, and a circulation component for mixing the materials is arranged on the outer side of the storage tank; the circulation component includes a circulation pump, a discharge pipe is installed at the water inlet of the circulation pump, the end of the discharge pipe penetrates into the interior along the tangent of the left side of the storage tank, and the discharge pipe is arranged at a position close to the bottom of the storage tank. A connecting pipe is installed at the outlet of the circulation pump, and a plurality of circulation pipes are fixedly communicated with the outer wall of the connecting pipe at equal intervals. The end of the circulation pipe penetrates into the interior along the tangent of the right side of the storage tank.

[0006] Preferably, a maintenance cover is detachably installed at the top of the storage tank, and a feed pipe is installed at a position close to the top on the left outer wall of the storage tank.

[0007] Preferably, a third valve is arranged at a position below the circulation pipe on the outer wall of the connecting pipe, a discharge pipe is arranged below the third valve on the outer wall of the connecting pipe, a second valve is arranged on the outer wall of the discharge pipe, and a first valve is arranged on the outer wall of the discharge pipe.

[0008] Preferably, an intermediate shaft is rotatably provided on the inner bottom surface of the storage tank, and a plurality of U-shaped scraping plates are equidistantly installed on the outer wall of the intermediate shaft, and the outer surface of the U-shaped scraping plate is attached to the inner wall of the storage tank.

[0009] Preferably, a rectangular frame is installed on the front outer wall of the storage tank, a slot is provided on the inner wall of the rectangular frame, and a transparent explosion-proof glass for observing the inside of the storage tank is provided on the front side of the rectangular frame.

[0010] Preferably, a cleaning assembly is provided on the outer surface of the rectangular frame. The cleaning assembly includes a connecting plate and a second strong magnet. The second strong magnet is slidably arranged inside the slot. A handle is installed on the front side of the second strong magnet. The connecting plate is arranged behind the transparent explosion-proof glass, and the outer surface of the connecting plate contacts the inner wall of the rectangular frame. Brush plates are symmetrically installed on the front side of the connecting plate. Roller shafts are symmetrically installed between the two brush plates on the front side of the connecting plate. The roller shafts contact the rear side of the transparent explosion-proof glass. A first strong magnet is installed between the two roller shafts on the front side of the connecting plate. The first strong magnet and the second strong magnet attract each other across the transparent explosion-proof glass.

[0011] Beneficial effects

[0012] The utility model provides a mixing mechanism for NMP materials in a large storage tank. Compared with the prior art, the following beneficial effects are achieved:

[0013] (1) In the mixing mechanism for NMP materials in a large storage tank, through the circulating pump and the tangential feeding and discharging method, the materials form a rotating flow in the storage tank, fully blending materials with different densities and viscosities, ensuring uniform distribution. At the same time, during the cyclic mixing process of the materials, it does not rely on traditional stirring blades, avoiding the risk of deformation and damage of the stirring blades due to huge reaction forces, reducing the cost of frequent maintenance and replacement of parts due to equipment damage, and improving the reliability and service life of the equipment.

[0014] (2) In the mixing mechanism for NMP materials in a large storage tank, through the transparent explosion-proof glass on the rectangular frame, it is convenient to observe the mixing situation of the materials inside the storage tank. Operators can timely discover problems and take corresponding measures, improving the controllability of the production process. Moreover, when the transparent explosion-proof glass needs to be cleaned, through the design of the cleaning assembly, the cleanliness of the glass can be guaranteed, ensuring the accuracy of observation, which helps to better monitor the mixing state of the materials and further improve the quality and use effect of the materials. Description of the drawings

[0015] Figure 1 It is a three-dimensional external view schematic diagram of the utility model;

[0016] Figure 2Cross-sectional view of the storage tank of the present utility model;

[0017] Figure 3 Schematic three-dimensional external view of the rectangular frame of the present utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of part A in

[0019] In the figure: 1. Storage tank; 11. Maintenance cover; 12. Feed pipe; 2. Circulation assembly; 21. Circulation pump; 22. Discharge pipe; 23. Connecting pipe; 24. Drain pipe; 25. Circulation pipe; 26. First valve; 27. Second valve; 28. Third valve; 3. Intermediate shaft; 31. U-shaped scraper; 4. Rectangular frame; 41. Slot; 42. Transparent explosion-proof glass; 5. Cleaning assembly; 51. Connecting plate; 52. Brush plate; 53. Roller; 54. First strong magnet; 55. Second strong magnet; 56. Handle. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides two technical solutions:

[0022] Figures 1 - 4 The first implementation manner is shown: A mixing mechanism for NMP materials in a large storage tank, including a storage tank 1, and a circulation assembly 2 for mixing materials is arranged outside the storage tank 1; the circulation assembly 2 includes a circulation pump 21, the water inlet of the circulation pump 21 is installed with a discharge pipe 22, the end of the discharge pipe 22 penetrates to the inside along the tangent line on the left side of the storage tank 1, and the discharge pipe 22 is arranged at a position close to the bottom of the storage tank 1, the outlet of the circulation pump 21 is installed with a connecting pipe 23, and the outer wall of the connecting pipe 23 is fixedly communicated with a plurality of circulation pipes 25 at equal intervals, and the end of the circulation pipe 25 penetrates to the inside along the tangent line on the right side of the storage tank 1.

[0023] The top of the storage tank 1 is detachably installed with a maintenance cover 11, and the left outer wall of the storage tank 1 is installed with a feed pipe 12 near the top. When it is necessary to repair the storage tank 1, the maintenance cover 11 at the top of the storage tank 1 can be opened for operation, and the material enters the storage tank 1 through the feed pipe 12 on the left side of the storage tank 1.

[0024] A third valve 28 is provided at a position on the outer wall of the connecting pipe 23 below the circulating pipe 25. A discharge pipe 24 is provided on the outer wall of the connecting pipe 23 below the third valve 28. A second valve 27 is provided on the outer wall of the discharge pipe 24, and a first valve 26 is provided on the outer wall of the discharge pipe 22. When it is necessary to discharge the material, just close the third valve 28 and open the second valve 27 at the same time. When the circulating pump 21 needs to be maintained, close all the valves, and the circulating pump 21 can be disassembled for maintenance, so as to facilitate adjusting the valve state according to actual needs at different production stages and meet various operation requirements.

[0025] A middle shaft 3 is rotatably provided on the inner bottom surface of the storage tank 1. A plurality of U-shaped scrapers 31 are equidistantly installed on the outer wall of the middle shaft 3. The outer surface of the U-shaped scraper 31 is attached to the inner wall of the storage tank 1. The combination of the middle shaft 3 and the U-shaped scraper 31 can effectively scrape the material attached to the tank wall, preventing material precipitation and accumulation. This further improves the mixing effect, and at the same time increases the effective volume of the storage tank 1 and improves the storage efficiency.

[0026] Figures 1 - 4 The second embodiment is shown. The main difference from the first embodiment is that a rectangular frame 4 is installed on the front outer wall of the storage tank 1. A slot 41 is provided on the inner wall of the rectangular frame 4. A transparent explosion-proof glass 42 for observing the inside of the storage tank 1 is provided on the front side of the rectangular frame 4. The transparent explosion-proof glass 42 on the rectangular frame 4 provides an intuitive observation window for the operator, and the operator can understand the material situation inside the storage tank 1 at any time, which is convenient for timely discovering problems and taking corresponding measures.

[0027] A cleaning assembly 5 is provided on the outer surface of the rectangular frame 4. The cleaning assembly 5 includes a connecting plate 51 and a second strong magnet 55. The second strong magnet 55 is slidably arranged inside the slot 41. A handle 56 is installed on the front side of the second strong magnet 55. The connecting plate 51 is arranged behind the transparent explosion-proof glass 42, and the outer surface of the connecting plate 51 is in contact with the inner wall of the rectangular frame 4. Brush plates 52 are symmetrically installed on the front side of the connecting plate 51. Roller shafts 53 are symmetrically installed between the two brush plates 52 on the front side of the connecting plate 51. The roller shafts 53 are in contact with the rear side of the transparent explosion-proof glass 42. A first strong magnet 54 is installed between the two roller shafts 53 on the front side of the connecting plate 51. The first strong magnet 54 and the second strong magnet 55 attract each other across the transparent explosion-proof glass 42. By pulling the handle 56 to drive the second strong magnet 55, and then attracting the connecting plate 51 to move through the first strong magnet 54, the brush plates 52 and the roller shafts 53 clean the transparent explosion-proof glass 42, and the operation is simple and convenient.

[0028] At the same time, the content not described in detail in this specification belongs to the well-known prior art in the art.

[0029] When the NMP material in the storage tank 1 needs to be mixed, the circulation pump 21 in the circulation component 2 is started. At this time, the material is extracted through the discharge pipe 22. After passing through the circulation pump 21, the material enters the connecting pipe 23 and is divided into multiple circulation pipes 25. The material enters the storage tank 1 from these circulation pipes 25. Since it enters tangentially, the material forms a rotating flow in the storage tank 1. This tangential entry method allows the material to fully flow and mix in the tank, breaking the stratification phenomenon of the material, allowing materials of different densities and viscosities to fully blend, ensuring that the material is evenly distributed in the entire storage tank 1. At the same time, the material does not rely on traditional stirring blades during the circulation mixing process, and will not directly bear the huge reaction force of the material like the stirring blades, thereby effectively reducing the risk of equipment damage. This not only reduces the cost of frequent maintenance and replacement of parts due to equipment damage, but also improves the reliability and service life of the equipment, and ensures the continuity of production;

[0030] As the material rotates and flows, the multiple U-shaped scrapers 31 on the intermediate shaft 3 will rotate with the flow of the material. The outer surface of the U-shaped scraper 31 fits against the inner wall of the storage tank 1, which can scrape off the material attached to the tank wall, further preventing the material from settling and accumulating, and improving the mixing effect.

[0031] The transparent explosion-proof glass 42 installed on the rectangular frame 4 can be used to conveniently observe the mixing of materials inside the storage tank 1, so as to find problems in time and take corresponding measures. When the transparent explosion-proof glass 42 needs to be cleaned, by pulling the handle 56 on the front side of the second strong magnet 55 in the slot 41, the first strong magnet 54 and the second strong magnet 55 attract each other through the transparent explosion-proof glass 42, which will drive the roller 53 on the connecting plate 51 to roll up and down on the surface of the transparent explosion-proof glass 42, so that the brush plate 52 can brush the transparent explosion-proof glass 42, thereby ensuring the cleanliness of the transparent explosion-proof glass 42 and ensuring the accuracy of observation.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mixing mechanism for NMP materials in a large storage tank, comprising a storage tank (1), characterized in that: A circulation assembly (2) for mixing materials is provided on the outer side of the storage tank (1). The circulation assembly (2) includes a circulation pump (21). The water inlet of the circulation pump (21) is equipped with a discharge pipe (22). The end of the discharge pipe (22) penetrates along the tangent line on the left side of the storage tank (1) to the inside, and the discharge pipe (22) is arranged at a position close to the bottom of the storage tank (1). The outlet of the circulation pump (21) is equipped with a connecting pipe (23). A plurality of circulation pipes (25) are fixedly communicated with the outer wall of the connecting pipe (23) at equal intervals. The end of the circulation pipe (25) penetrates along the tangent line on the right side of the storage tank (1) to the inside.

2. The homogenizing mechanism of an NMP material in a large storage tank according to claim 1, characterized in that: A maintenance cover (11) is detachably installed at the top of the storage tank (1). A feed pipe (12) is installed at a position close to the top on the outer wall of the left side of the storage tank (1).

3. The homogenizing mechanism of NMP material in a large storage tank according to claim 1, characterized in that: A third valve (28) is arranged at a position on the outer wall of the connecting pipe (23) below the circulation pipe (25). A discharge pipe (24) is arranged at a position on the outer wall of the connecting pipe (23) below the third valve (28). A second valve (27) is arranged on the outer wall of the discharge pipe (24). A first valve (26) is arranged on the outer wall of the discharge pipe (22).

4. A mixing mechanism for NMP materials in a large storage tank according to claim 1, characterized in that: A middle shaft (3) is rotatably arranged on the inner bottom surface of the storage tank (1). A plurality of U-shaped scraping plates (31) are equidistantly installed on the outer wall of the middle shaft (3). The outer surface of the U-shaped scraping plate (31) is attached to the inner wall of the storage tank (1).

5. The homogenizing mechanism of an NMP material in a large storage tank according to claim 1, characterized in that: A rectangular frame (4) is installed on the front outer wall of the storage tank (1). A slot (41) is arranged on the inner wall of the rectangular frame (4). A transparent explosion-proof glass (42) for observing the inside of the storage tank (1) is arranged on the front side of the rectangular frame (4).

6. The homogenizing mechanism of NMP material in a large storage tank according to claim 5, characterized in that: A cleaning assembly (5) is arranged on the outer surface of the rectangular frame (4). The cleaning assembly (5) includes a connecting plate (51) and a second strong magnet (55). The second strong magnet (55) is slidably arranged inside the slot (41). A handle (56) is installed on the front side of the second strong magnet (55). The connecting plate (51) is arranged behind the transparent explosion-proof glass (42), and the outer surface of the connecting plate (51) is in contact with the inner wall of the rectangular frame (4). Brush plates (52) are symmetrically installed on the front side of the connecting plate (51). Rollers (53) are symmetrically installed between the two brush plates (52) on the front side of the connecting plate (51). The rollers (53) are in contact with the rear side of the transparent explosion-proof glass (42). A first strong magnet (54) is installed between the two rollers (53) on the front side of the connecting plate (51). The first strong magnet (54) and the second strong magnet (55) attract each other across the transparent explosion-proof glass (42).

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