Recombinant buffer tank

Abstract

This utility model relates to the field of buffer tank technology and discloses a buffer tank for heavy components, including a tank body. An inlet is fixedly installed at the top of the tank body, and a bottom connecting assembly engages with the bottom of the tank body. A sealing ring is fixedly installed between the bottom connecting assembly and the middle of the tank body. This utility model features a bracket fixedly installed inside the bottom connecting assembly, and a filter plate with filter holes inside. When material is injected into the tank body from the inlet, solid impurities such as polymers in the NMP heavy components fall downwards with the liquid. When they fall onto the surface of the filter plate, the solid impurities are filtered by the filter holes, while the liquid material continues to flow downwards through the filter holes. When it is necessary to clean the impurities, the bottom connecting assembly can be disassembled from the tank body through the engagement mechanism, allowing for direct cleaning of the solid impurities, thus preventing impurities from accumulating at the bottom and becoming difficult to clean.

Description

Technical Field

[0001] This utility model relates to the field of buffer tank technology, and more specifically, to a heavy component buffer tank. Background Technology

[0002] A heavy component buffer tank is an intermediate storage tank used to receive, temporarily store, and smoothly transport high-boiling-point, heavy liquid components generated during the process. Its core function is "buffering," ensuring the continuity and stability of upstream and downstream operations. In NMP production, heavy component buffer tanks are usually located at the bottom of the distillation column (or heavy component column) for recovering NMP, ensuring the continuous and stable operation of the distillation column.

[0003] In existing technologies, solid impurities such as polymers in NMP recombinant components tend to deposit at the bottom of the tank, making regular cleaning of the tank bottom very troublesome. It requires manual entry or extensive rinsing, which is time-consuming and labor-intensive. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a heavy component buffer tank, which has the advantage of facilitating the cleaning of bottom deposits.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heavy component buffer tank, including a tank body, an inlet fixedly installed at the top of the tank body, a bottom connecting assembly engaged at the bottom of the tank body, a sealing ring fixedly installed between the bottom connecting assembly and the middle of the tank body, an outlet fixedly installed at the bottom of the bottom connecting assembly, a bracket fixedly installed inside the bottom connecting assembly, a support rod fixedly installed above the bracket, a filter plate fixedly installed above the support rod, and filter holes opened inside the filter plate.

[0006] As a preferred embodiment of this utility model, a protective plate is fixedly installed above the filter plate. The protective plate is annular and contacts the inner wall of the tank.

[0007] As a preferred embodiment of this utility model, a connecting pipe is fixedly installed on the outside of the tank, a circulation pump is fixedly installed on the outside of the connecting pipe, and a visual pipe is fixedly installed on the outside of the circulation pump. The visual pipe is connected to the tank and is located above the connecting pipe.

[0008] As a preferred embodiment of this utility model, both the connecting pipe and the visible pipe are fitted with insulation sleeves, which are made of insulation cotton.

[0009] As a preferred embodiment of this utility model, a second bracket is fixedly installed inside the visualized pipe, a telescopic rod is fixedly installed on the side of the second bracket away from the tank, a spring is sleeved on the outside of the telescopic rod, a sealing plate is fixedly installed on the side of the spring away from the second bracket, and a limit ring is fixedly installed inside the visualized pipe, with the sealing plate fitting against the limit ring.

[0010] As a preferred embodiment of this utility model, a bracket three is fixedly installed on the outer side of the tank, and the bracket three is fixedly connected to the circulation pump.

[0011] As a preferred embodiment of this utility model, there are multiple filter holes, all of which are located above the bottom connecting component and are evenly distributed inside the filter plate.

[0012] As a preferred embodiment of this utility model, the upper part of the feed inlet is connected to a distillation column, and the bottom of the discharge outlet is connected to a batch distillation vessel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model features a bracket fixedly installed inside the bottom connecting assembly, a support rod fixedly installed above the bracket, and a filter plate fixedly installed above the support rod. The filter plate has filter holes inside. When the material is injected into the tank from the inlet, solid impurities such as polymers in the NMP heavy components will fall downwards with the liquid. When they fall onto the surface of the filter plate, the solid impurities are filtered by the filter holes, while the liquid material continues to flow downwards through the filter holes. When it is necessary to clean the impurities, the bottom connecting assembly can be disassembled from the tank through engagement, and the solid impurities can be cleaned directly, thereby preventing impurities from accumulating at the bottom and causing difficulty in cleaning.

[0015] 2. This utility model features a circulating pump fixedly installed on the outside of the connecting pipe, and a visual pipe fixedly installed on the outside of the circulating pump, with the visual pipe connected to the tank. Since the viscosity of heavy components increases and crystallization may occur after they are left to cool and settle in the tank, affecting transportation and subsequent processing, it is difficult for operators to intuitively judge the real-time viscosity of the material in the tank. At this time, after the material enters the bottom of the tank, the circulating pump is started, which draws the material from the inside of the connecting pipe and then transports it through the inside of the circulating pump to the inside of the visual pipe, so that the material enters the tank through the visual pipe to achieve a circulation effect. At the same time, due to the visualization effect of the visual pipe, it is easy to observe the viscosity progress of heavy components by the flow speed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;

[0018] Figure 3 This is a cross-sectional view of the tank structure of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B;

[0020] Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point C.

[0021] In the diagram: 1. Tank body; 2. Inlet; 3. Bottom connecting assembly; 4. Sealing ring; 5. Outlet; 6. Support bracket one; 7. Support rod; 8. Filter plate; 9. Filter hole; 10. Protective plate; 11. Connecting pipe; 12. Circulation pump; 13. Visual pipeline; 14. Support bracket two; 15. Telescopic rod; 16. Spring; 17. Sealing plate; 18. Limiting ring; 19. Support bracket three; 20. Insulation sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 5 As shown, this utility model provides a heavy component buffer tank, including a tank body 1, an inlet 2 fixedly installed on the top of the tank body 1, a bottom connecting component 3 engaged with the bottom of the tank body 1, a sealing ring 4 fixedly installed between the bottom connecting component 3 and the middle of the tank body 1, an outlet 5 fixedly installed at the bottom of the bottom connecting component 3, a bracket 6 fixedly installed inside the bottom connecting component 3, a support rod 7 fixedly installed above the bracket 6, a filter plate 8 fixedly installed above the support rod 7, and filter holes 9 opened inside the filter plate 8.

[0024] When the material is injected into the tank 1 from the inlet 2, solid impurities such as polymers in the NMP heavy components will fall downwards with the liquid. When they fall onto the surface of the filter plate 8, the solid impurities are filtered by the filter holes 9, while the liquid material continues to flow downwards through the filter holes 9. When it is necessary to clean the impurities, the bottom connecting component 3 is disassembled from the tank 1 through the meshing action, and the solid impurities are cleaned directly, thereby preventing the impurities from accumulating at the bottom and causing a difficult-to-clean situation.

[0025] Among them, a protective plate 10 is fixedly installed above the filter plate 8. The protective plate 10 is annular and contacts the inner wall of the tank 1.

[0026] The main function of the guard plate 10 is to limit the impurities on the surface of the filter plate 8 and prevent the impurities from floating up and down with the flow of the material.

[0027] A connecting pipe 11 is fixedly installed on the outside of the tank body 1, a circulation pump 12 is fixedly installed on the outside of the connecting pipe 11, and a visual pipe 13 is fixedly installed on the outside of the circulation pump 12. The visual pipe 13 is connected to the tank body 1 and is located above the connecting pipe 11.

[0028] As the viscosity of heavy components increases and crystallization may occur after they are left to stand and cool in tank 1, it affects the conveying and subsequent processing. It is difficult for operators to intuitively judge the real-time viscosity of the material in the tank. At this time, after the material enters the bottom of tank 1, the circulation pump 12 is started, so that the material is drawn from the inside of the connecting pipe 11 and then transported through the inside of the circulation pump 12 to the inside of the visualization pipe 13. The visualization pipe 13 inputs into the inside of tank 1 to achieve the circulation effect. At the same time, due to the visualization effect of the visualization pipe 13, it is easy to observe the viscosity progress of heavy components by the flow speed.

[0029] Both the connecting pipe 11 and the visible pipe 13 are fitted with an insulation sleeve 20, which is made of insulation cotton.

[0030] The main function of the insulation jacket 20 is to insulate the outside of the connecting pipe 11 and the visible pipe 13 to prevent the heavy components from accumulating due to rapid heat dissipation during circulation.

[0031] The visible pipe 13 has a bracket 14 fixedly installed inside. A telescopic rod 15 is fixedly installed on the side of the bracket 14 away from the tank 1. A spring 16 is sleeved on the outside of the telescopic rod 15. A sealing plate 17 is fixedly installed on the side of the spring 16 away from the bracket 14. A limit ring 18 is fixedly installed inside the visible pipe 13. The sealing plate 17 and the limit ring 18 are fitted together.

[0032] The sealing plate 17 is always in contact with the limiting ring 18 by the elastic force of the spring 16, thereby sealing the visualization pipe 13. When the circulation pump 12 is started to drive the heavy components to circulate, when the pressure value inside the visualization pipe 13 is greater than the elastic force value of the spring 16, the spring 16 will be squeezed and contracted, causing the sealing plate 17 to separate from the limiting ring 18, thus achieving the circulation effect. At the same time, when the circulation pump 12 is turned off, the sealing plate 17 is squeezed by the elastic force of the spring 16 and contacts the limiting ring 18, thereby sealing the visualization pipe 13 and preventing the heavy components that enter the tank 1 from the inside of the inlet 2 from entering the inside of the visualization pipe 13 and causing backflow.

[0033] Among them, a bracket 319 is fixedly installed on the outside of the tank body 1, and the bracket 319 is fixedly connected to the circulating pump 12.

[0034] The main function of bracket 319 is to support the circulating pump 12 and keep the circulating pump 12 in a stable state.

[0035] There are multiple filter holes 9, all of which are located above the bottom connecting component 3, and are evenly distributed inside the filter plate 8.

[0036] The main function of the multiple filter holes 9 is to prevent some of the filter holes 9 from being blocked by impurities and thus preventing the flow when filtering internal solid impurities.

[0037] The feed inlet 2 is connected to the distillation column at the top, and the discharge outlet 5 is connected to the batch distillation vessel at the bottom.

[0038] The main function of outlet 5 is to further heat the heavy component material coming out of the buffer tank so that the residual NMP can be evaporated and recovered to the maximum extent, thereby improving the product yield and economic benefits of the entire unit.

[0039] Working principle and usage process of this utility model:

[0040] First, a bracket 6 is fixedly installed inside the bottom connecting component 3. A support rod 7 is fixedly installed above the bracket 6. A filter plate 8 is fixedly installed above the support rod 7. The filter plate 8 has filter holes 9 inside. When the material is injected into the tank 1 from the inlet 2, solid impurities such as polymers in the NMP heavy components will fall down with the liquid. When they fall onto the surface of the filter plate 8, the solid impurities are filtered by the filter holes 9, while the liquid material continues to flow down through the filter holes 9. When it is necessary to clean the impurities, the bottom connecting component 3 is disassembled from the tank 1 through the meshing action, and the solid impurities are cleaned directly, thereby preventing the impurities from accumulating at the bottom and causing a difficult-to-clean situation.

[0041] Secondly, a circulation pump 12 is fixedly installed on the outside of the connecting pipe 11, and a visualization pipe 13 is fixedly installed on the outside of the circulation pump 12. The visualization pipe 13 is connected to the tank 1. Since the viscosity of the heavy components increases and crystallization may occur after they are left to stand and cool in the tank 1, it affects the conveying and subsequent processing. It is difficult for the operator to intuitively judge the real-time viscosity of the material in the tank. At this time, after the material enters the bottom of the tank 1, the circulation pump 12 is started, so that the material is drawn from the inside of the connecting pipe 11 and then transported through the inside of the circulation pump 12 to the inside of the visualization pipe 13. The visualization pipe 13 inputs into the inside of the tank 1 to achieve the circulation effect. At the same time, due to the visualization effect of the visualization pipe 13, it is easy to observe the viscosity progress of the heavy components by the flow speed.

[0042] Finally, a sealing plate 17 is fixedly installed on the side of spring 16 away from bracket 14, and a limiting ring 18 is fixedly installed inside the visualization pipe 13. The sealing plate 17 and the limiting ring 18 are in contact. The sealing plate 17 is always in contact with the limiting ring 18 by the elastic force of spring 16, thereby sealing the visualization pipe 13. When the circulation pump 12 is started to drive the heavy components to circulate, when the pressure value inside the visualization pipe 13 is greater than the elastic force value of spring 16, spring 16 will be squeezed and contracted, causing the sealing plate 17 to separate from the limiting ring 18, thus achieving the circulation effect. At the same time, when the circulation pump 12 is turned off, the sealing plate 17 is squeezed by the elastic force of spring 16 and contacts the limiting ring 18, thereby sealing the visualization pipe 13 and preventing the heavy components entering the tank 1 from the inside of the inlet 2 from entering the inside of the visualization pipe 13 and causing backflow.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" 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 process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A recombinant component buffer tank, comprising a tank body (1), characterized in that: A feed inlet (2) is fixedly installed on the top of the tank (1), a bottom connecting assembly (3) is engaged with the bottom of the tank (1), a sealing ring (4) is fixedly installed between the bottom connecting assembly (3) and the middle of the tank (1), a discharge port (5) is fixedly installed at the bottom of the bottom connecting assembly (3), a bracket (6) is fixedly installed inside the bottom connecting assembly (3), a support rod (7) is fixedly installed on the top of the bracket (6), a filter plate (8) is fixedly installed on the top of the support rod (7), and a filter hole (9) is opened inside the filter plate (8).

2. The recombinant component buffer tank according to claim 1, characterized in that: A protective plate (10) is fixedly installed above the filter plate (8). The protective plate (10) is annular and contacts the inner wall of the tank (1).

3. The recombinant component buffer tank according to claim 1, characterized in that: A connecting pipe (11) is fixedly installed on the outside of the tank (1), a circulation pump (12) is fixedly installed on the outside of the connecting pipe (11), and a visual pipe (13) is fixedly installed on the outside of the circulation pump (12). The visual pipe (13) is connected to the tank (1) and is located above the connecting pipe (11).

4. The recombinant component buffer tank according to claim 3, characterized in that: Both the connecting pipe (11) and the visible pipe (13) are fitted with insulation sleeves (20), which are made of insulation cotton.

5. The recombinant component buffer tank according to claim 3, characterized in that: A second bracket (14) is fixedly installed inside the visualized pipe (13). A telescopic rod (15) is fixedly installed on the side of the second bracket (14) away from the tank (1). A spring (16) is sleeved on the outside of the telescopic rod (15). A sealing plate (17) is fixedly installed on the side of the spring (16) away from the second bracket (14). A limit ring (18) is fixedly installed inside the visualized pipe (13). The sealing plate (17) is in contact with the limit ring (18).

6. The recombinant component buffer tank according to claim 3, characterized in that: A bracket three (19) is fixedly installed on the outside of the tank (1), and the bracket three (19) is fixedly connected to the circulating pump (12).

7. The recombinant component buffer tank according to claim 1, characterized in that: There are multiple filter holes (9), all of which are located above the bottom connecting component (3) and are evenly distributed inside the filter plate (8).

8. The recombinant component buffer tank according to claim 1, characterized in that: The feed inlet (2) is connected to the distillation column above, and the discharge outlet (5) is connected to the batch distillation vessel at the bottom.

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