Rectification and purification device for NMP waste liquid recovery

Abstract

The utility model discloses a rectification purification device for NMP waste liquid recovery, which belongs to the technical field of waste liquid treatment, and comprises a purification tower, one side of the purification tower is fixedly connected with a delivery pump, one end of the delivery pump is fixedly connected with a fixed barrel, the center of the top surface of the fixed barrel is provided with a sealing cover, and the top surface of the fixed barrel is provided with a water inlet and a water outlet. A connecting pipe is fixedly connected to the portion, close to one side, of the top face of the sealing cover, a liquid conveying pipe is fixedly connected to the upper end of the connecting pipe, a filtering cylinder is arranged on the portion, close to the side edge, of the bottom face of the sealing cover, and a cleaning mechanism is arranged in the filtering cylinder. And moreover, the cleaning assembly is arranged to clean impurities on the inner surface of the filter part, so that the problem of blockage of the filter part is reduced, and the recovery work is ensured to be smoothly carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of waste liquid treatment, and more specifically to a distillation and purification device for recovering NMP waste liquid. Background Art

[0002] NMP is a commonly used organic solvent with good solubility and thermal stability. However, during use, NMP will gradually be contaminated by impurities and become waste liquid, which not only leads to waste of resources, but also has adverse effects on the environment. The NMP waste liquid can be recycled through the distillation and purification device, which not only reduces environmental pollution but also improves the utilization rate of resources.

[0003] For example, a Chinese utility model patent with announcement number CN219272292U discloses a high-efficiency NMP waste liquid distillation and purification device, including a purification tower and a liquid inlet pipe connected to the side wall of the lower end of the purification tower, on which a filter box and a pump are installed; the upper end of the filter box is opened, and a cover plate is fixedly connected to the corresponding opening, a plurality of filter mesh plates are fixedly connected to the lower end of the cover plate, and a sealing plug-in frame is fixedly connected to the lower end of the cover plate and is sealed and plugged into the inner side of the upper end of the filter box.

[0004] Based on the above, the inventors found that the comparative document with announcement number CN219272292U performs filtering pre-treatment on the waste liquid by setting a filtering component to reduce the problem of impurity particles entering the distillation and purification device. However, as the filtering work proceeds, the impurity particles adhere to one side of the filtering component, which easily causes blockage problems. The lack of a cleaning component in the comparative document leads to poor circulation of subsequent waste liquid, affecting the recovery work. Therefore, in view of this, the existing structure is studied and improved, and a distillation and purification device for NMP waste liquid recovery is provided, in order to achieve a more practical purpose. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a distillation and purification device for NMP waste liquid recovery. In this scheme, a filter component is arranged to effectively filter the waste liquid. At the same time, the filter component is easy to dismantle, which is convenient for centralized cleaning of the filtered impurity particles. A cleaning component is arranged to clean the impurities on the inner surface of the filter element, thereby reducing the problem of filter element clogging and ensuring the smooth progress of the recovery work.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A distillation and purification device for recycling NMP waste liquid, comprising a purification tower, one side of the purification tower is fixedly connected to a delivery pump, one end of the delivery pump is fixedly connected to a fixed barrel, a sealing cover is centrally arranged on the top surface of the fixed barrel, a connecting pipe is fixedly connected to one side of the top surface of the sealing cover, an infusion pipe is fixedly connected to the upper end of the connecting pipe, a filter cartridge is arranged on the side of the bottom surface of the sealing cover, a cleaning mechanism is arranged inside the filter cartridge, and a group of bolts are penetrated on the side of the top surface of the sealing cover;

[0010] The cleaning mechanism comprises a driving motor, the output end of the driving motor is fixedly connected with a rotating shaft, the side of the rotating shaft is fixedly connected with a group of cleaning rods, and the bottom end of the rotating shaft is clamped with a supporting sleeve.

[0011] Furthermore, the cross section of the sealing cover is arranged in a concave shape, and the sealing cover is threadedly connected to the top of the fixed barrel.

[0012] Furthermore, the connecting pipe is arranged in an L shape, and the top end of the connecting pipe is arranged in a corrugated shape.

[0013] Furthermore, the bottom end of the bolt passes through the sealing cover and is threadedly connected to the top of the filter cartridge.

[0014] Furthermore, the driving motor is fixedly connected to the top surface of the sealing cover in the center, the rotating shaft passes through the sealing cover, and the rotating shaft is movably connected to the sealing cover.

[0015] Furthermore, the cleaning rod is located inside the filter cartridge, and one side of the cleaning rod is in contact with the inner surface of the filter cartridge.

[0016] Furthermore, the support sleeve is located at the bottom end of the filter cartridge and is internally connected to the filter cartridge in a movably manner.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) This solution filters the waste liquid by setting up a filter cartridge, and the impurities filtered out are accumulated inside the filter cartridge. The sealing cover is then rotated to separate from the fixed barrel, so that the filter cartridge is removed from the fixed barrel. The bolts are then removed and the filter cartridge can be removed for cleaning. Compared with the prior art, the filter assembly is set up to effectively filter the waste liquid, and the filter assembly is easy to remove, so that the filtered impurity particles can be centrally cleaned.

[0020] (2) By setting up a cleaning mechanism, the cleaning rod is driven to rotate under the action of the rotating shaft, and the bottom end of the rotating shaft is supported by the support sleeve to ensure the rotation stability of the support sleeve, so that the cleaning rod can clean the impurities adhering to the inner surface of the filter cartridge. Compared with the prior art, a cleaning component is set up to clean the impurities on the inner surface of the filter element, thereby reducing the problem of filter element clogging and ensuring the smooth progress of the recovery work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the fixed barrel of the utility model;

[0023] Figure 3 This is a disassembled diagram of the sealing cover and the filter cartridge of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the cleaning mechanism of the utility model.

[0025] Explanation of the numbers in the figure: 1. Purification tower; 2. Delivery pump; 3. Fixed barrel; 4. Sealing cover; 5. Connecting pipe; 6. Infusion pipe; 7. Filter cartridge; 8. Cleaning mechanism; 9. Bolt; 10. Driving motor; 11. Rotating shaft; 12. Cleaning rod; 13. Support sleeve. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0027] Example:

[0028] See also Figure 1-4 A distillation and purification device for recycling NMP waste liquid comprises a purification tower 1, a delivery pump 2 is fixedly connected to one side of the purification tower 1, a fixed barrel 3 is fixedly connected to one end of the delivery pump 2, a sealing cover 4 is centrally arranged on the top surface of the fixed barrel 3, a connecting pipe 5 is fixedly connected to one side of the top surface of the sealing cover 4, a liquid infusion pipe 6 is fixedly connected to the upper end of the connecting pipe 5, a filter cartridge 7 is arranged on the side of the bottom surface of the sealing cover 4, a cleaning mechanism 8 is arranged inside the filter cartridge 7, and a group of bolts 9 are penetrated on the side of the top surface of the sealing cover 4;

[0029] The cleaning mechanism 8 includes a driving motor 10, the output end of the driving motor 10 is fixedly connected to a rotating shaft 11, the side of the rotating shaft 11 is fixedly connected to a group of cleaning rods 12, and the bottom end of the rotating shaft 11 is clamped with a support sleeve 13. In order to reduce the clogging problem of the filter assembly, a cleaning mechanism 8 is provided.

[0030] See also Figure 2 The cross section of the sealing cover 4 is concave in shape, and the sealing cover 4 is threadedly connected to the top of the fixed barrel 3. The sealing cover 4 is rotated to be fixedly connected to the fixed barrel 3, so that the filter cartridge 7 enters the interior of the fixed barrel 3.

[0031] See also Figure 1 The connecting pipe 5 is L-shaped, and the top of the connecting pipe 5 is corrugated. The top of the connecting pipe 5 is fixedly connected to the infusion pipe 6. Then the infusion pipe 6 transports the waste liquid to the inside of the fixed barrel 3 through the connecting pipe 5. After filtering, it is transported to the inside of the purification tower 1 by the delivery pump 2 for distillation and purification, thereby realizing the work of NMP recovery.

[0032] See also Figure 3 The bottom end of the bolt 9 passes through the sealing cover 4 and is threadedly connected to the top of the filter cartridge 7 . The filter cartridge 7 is placed on the bottom surface of the sealing cover 4 and fixed by the bolt 9 .

[0033] See also Figure 2 The driving motor 10 is fixedly connected to the top surface of the sealing cover 4 in the center, the rotating shaft 11 passes through the sealing cover 4, and the rotating shaft 11 is movably connected to the sealing cover 4. After the waste liquid enters the fixed barrel 3, it is filtered by the filter cartridge 7. At the same time, the driving motor 10 is started, and the cleaning rod 12 is driven to rotate under the action of the rotating shaft 11.

[0034] See also Figure 4 The cleaning rod 12 is located inside the filter cartridge 7 , and one side of the cleaning rod 12 contacts the inner surface of the filter cartridge 7 . The cleaning rod 12 cleans impurities adhering to the inner surface of the filter cartridge 7 .

[0035] See also Figure 4 The support sleeve 13 is located inside the bottom end of the filter cartridge 7 , and the support sleeve 13 is movably connected to the filter cartridge 7 , and the support sleeve 13 supports the bottom end of the rotating shaft 11 to ensure the rotation stability of the support sleeve 13 .

[0036] During use: the infusion tube 6 transports the waste liquid to the inside of the fixed barrel 3 through the connecting tube 5. After filtering, the waste liquid enters the fixed barrel 3 and is first filtered by the filter cartridge 7. At the same time, the driving motor 10 is started to drive the cleaning rod 12 to rotate under the action of the rotating shaft 11. The bottom end of the rotating shaft 11 is supported by the supporting sleeve 13 to ensure the rotation stability of the supporting sleeve 13, so that the cleaning rod 12 cleans the impurities adhering to the inner surface of the filter cartridge 7. The filtered waste liquid is then transported to the inside of the purification tower 1 by the delivery pump 2 for distillation and purification, thereby realizing the recovery of NMP. After completing the recovery task, the connecting tube 5 is first separated from the infusion tube 6, and then the sealing cover 4 is rotated to separate from the fixed barrel 3, so that the filter cartridge 7 is moved out of the fixed barrel 3, and then the bolts 9 are removed to remove the filter cartridge 7, so that the filtered impurity particles can be centrally cleaned.

[0037] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A distillation and purification device for recovering NMP waste liquid, comprising a purification tower (1), a delivery pump (2) is fixedly connected to one side of the purification tower (1), a fixed barrel (3) is fixedly connected to one end of the delivery pump (2), a sealing cover (4) is centrally arranged on the top surface of the fixed barrel (3), a connecting pipe (5) is fixedly connected to the top surface of the sealing cover (4) on one side, and a liquid infusion tube (6) is fixedly connected to the upper end of the connecting pipe (5), characterized in that: A filter cartridge (7) is arranged on the side of the bottom surface of the sealing cover (4), a cleaning mechanism (8) is arranged inside the filter cartridge (7), and a group of bolts (9) are arranged through the top surface of the sealing cover (4); The cleaning mechanism (8) comprises a driving motor (10), the output end of the driving motor (10) is fixedly connected to a rotating shaft (11), the side of the rotating shaft (11) is fixedly connected to a group of cleaning rods (12), and the bottom end of the rotating shaft (11) is clamped with a supporting sleeve (13).

2. The distillation and purification device for NMP waste liquid recovery according to claim 1, wherein: The cross section of the sealing cover (4) is arranged in a concave shape, and the sealing cover (4) is threadedly connected to the top of the fixed barrel (3).

3. The distillation and purification device for NMP waste liquid recovery according to claim 1, wherein: The connecting pipe (5) is arranged in an L shape, and the top end of the connecting pipe (5) is arranged in a corrugated shape.

4. The rectification and purification device for NMP waste liquid recovery according to claim 1, characterized in that: The bottom end of the bolt (9) passes through the sealing cover (4) and is threadedly connected to the top of the filter cartridge (7).

5. The rectification and purification device for NMP waste liquid recovery according to claim 1, characterized in that: The driving motor (10) is fixedly connected to the center of the top surface of the sealing cover (4); the rotating shaft (11) passes through the sealing cover (4); and the rotating shaft (11) is movably connected to the sealing cover (4).

6. A rectification and purification device for NMP waste liquid recovery according to claim 1, characterized in that: The cleaning rod (12) is located inside the filter cartridge (7), and one side of the cleaning rod (12) is in contact with the inner surface of the filter cartridge (7).

7. A rectification and purification device for NMP waste liquid recovery according to claim 1, characterized in that: The support sleeve (13) is located at the bottom end of the filter cartridge (7) and is close to the inside, and the support sleeve (13) is movably connected to the filter cartridge (7).

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