Pretreatment device applied to NMP (N-Methyl Pyrrolidone) waste liquid purification

Abstract

The utility model relates to the technical field of NMP waste liquid purification, in particular to a pretreatment device applied to NMP waste liquid purification, which comprises a settling tank, a filter barrel and a settling pond, a cavity is arranged in the settling tank, a connecting pipe is arranged on the bottom wall of the filter barrel, a valve is arranged on the connecting pipe, an electric telescopic rod is arranged on the upper side wall of the cavity, and the electric telescopic rod is connected with the settling pond. A connecting rod is arranged at one end of the lower side of the electric telescopic rod, a suction head with a water pump is arranged at one end of the connecting rod, a water pipe is arranged at the upper end of the suction head, a scraping device is arranged in the sedimentation tank and comprises a rotating rod, a limiting rod and a cleaning plate, and an opening is formed in one side of the bottom wall of the sedimentation tank. According to the NMP waste liquid treatment device, large-particle impurities and suspended solids in NMP waste liquid can be removed, the subsequent purification efficiency is improved, the labor intensity of operators is relieved, and the treatment stability and consistency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to NMP waste liquid purification technical field, concretely is a kind of pretreatment device applied to NMP waste liquid purification. BACKGROUND

[0002] It is known that, in the production and application process of existing N-methylpyrrolidone (NMP), a large amount of waste liquid will be generated, which usually contains unreacted raw materials, intermediate products, solvent residues and possible harmful impurities. In order to effectively recover and reuse NMP, the waste liquid must be purified.

[0003] However, the existing NMP waste liquid purification pretreatment device, when in use, only uses a simple filtering method, which cannot effectively remove fine particles and soluble impurities in the waste liquid, resulting in an increased burden on the subsequent purification process and affecting the overall purification efficiency. Moreover, manual operation is required, which cannot achieve automatic control, increasing the labor intensity of the operators and possibly leading to unstable treatment results due to human factors. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a pretreatment device applied to NMP waste liquid purification.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pretreatment device applied to NMP waste liquid purification, comprising a sedimentation tank, a filter barrel and a sedimentation pool, the sedimentation tank is provided with a cavity, the sedimentation pool is in the cavity and is matched with it, the filter barrel is on the upper side wall of the sedimentation tank, the filter barrel bottom wall is provided with a connecting pipe, the connecting pipe penetrates the filter barrel and the cavity, a valve is arranged on the connecting pipe, an electric telescopic rod is arranged on the upper side wall of the cavity, one end of the lower side of the electric telescopic rod is provided with a connecting rod, one end of the connecting rod is provided with a suction head with a water pump, a water pipe is arranged on the upper end of the suction head, the water pipe penetrates the side wall of the sedimentation tank, the suction head is on the upper end of the sedimentation pool, a scraping device is arranged in the sedimentation pool, the scraping device comprises a rotating rod, a limiting rod and a cleaning plate, the rotating rod and the limiting rod are arranged in parallel, the cleaning plate is on the rotating rod and the limiting rod, the rotating rod penetrates one end of the cleaning plate and is threadedly connected therewith, the limiting rod penetrates the other end of the cleaning plate and is slidably connected therewith, the cleaning plate is attached to and slidably connected with the bottom wall of the sedimentation pool, an opening is arranged on one side of the bottom wall of the sedimentation pool, a sealing block is arranged at the opening, and the sealing block is detachably connected with the opening.

[0008] In order to effectively intercept the impurities in the waste liquid, the utility model improves that the filter box is arranged in the filter bucket, the filter box is matched with the inner side wall of the filter bucket, the filter box is provided with the symmetrical hook at both ends, the hook is matched with the upper side wall of the filter bucket.

[0009] In order to provide stable support for the sediment tank, the utility model improves that the support rod is arranged at the four corners of the bottom wall of the sediment tank, and the bottom wall of the support rod is made of antiskid material.

[0010] In order to realize the automatic driving of the scraping device, the utility model improves that the motor is arranged on one side wall of the sediment tank, and the rotating rod penetrates through the side wall of the sediment tank and is connected with the output end of the motor.

[0011] In order to facilitate the conveying of the pretreated waste liquid to the subsequent treatment equipment, the utility model improves that the output pipe is arranged at one end of the water pipe, and the switch is arranged on the output pipe and matched with the output pipe.

[0012] In order to facilitate the maintenance and repair of the operating personnel, the utility model improves that the auxiliary door is arranged on the front side wall of the sediment tank, the auxiliary door is matched with the cavity, and the handle is arranged on one side of the auxiliary door.

[0013] In order to facilitate the quick disassembly of the sealing block when needed, the utility model improves that the disassembly block is arranged on the bottom wall of the sealing block.

[0014] In order to realize the real-time monitoring and control of the temperature in the sediment tank, the utility model improves that the temperature controller is arranged on one side of the sediment tank.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the utility model provides a pretreatment device applied to NMP waste liquid purification, which has the following beneficial effects:

[0017] The pretreatment device applied to NMP waste liquid purification is provided with the filter bucket and the filter box, can remove the large-particle impurities and suspended matters in the NMP waste liquid, improve the subsequent purification efficiency, is provided with the sediment tank, carries out further sedimentation treatment, the scraping device in the sediment tank, the motor output drives the rotating rod to rotate, the limiting rod is limited, and the cleaning plate moves along with the rotation of the rotating rod, can continuously scrape the sediment, prevents the accumulation and caking, thereby improves the sedimentation efficiency, simultaneously, the rotating rod in the scraping device is driven by the motor, can automatically scrape the sediment on the bottom wall of the sediment tank, the automatic control mode not only reduces the labor intensity of the operating personnel, but also improves the stability and consistency of the treatment, makes the cleaning and maintenance of the sediment tank become easier. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a first view angle schematic view of the structure of the utility model;

[0019] Figure 2 is a second view angle schematic view of the structure of the utility model;

[0020] Figure 3 is a filter barrel and filter box exploded schematic view of the structure of the utility model;

[0021] Figure 4 is a sedimentation tank internal section schematic view of the structure of the utility model.

[0022] In the figure: 1, sedimentation tank; 2, support rod; 3, connecting pipe; 4, valve; 5, auxiliary door; 6, handle; 7, temperature controller; 8, filter barrel; 9, hook; 10, motor; 11, sedimentation tank; 12, water pipe; 13, output pipe; 14, electric telescopic rod; 15, suction head; 16, connecting rod; 17, filter box; 18, sealing block; 19, dismounting block; 20, cleaning plate; 21, rotating rod; 22, limiting rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4A kind of pre-treatment device applied to NMP waste liquid purification, including sedimentation tank 1, filter barrel 8 and sedimentation tank 11, the cavity is arranged in the sedimentation tank 1, the sedimentation tank 11 in the cavity and with it adaptation, the filter barrel 8 in the upper lateral wall of the sedimentation tank 1, the filter barrel 8 bottom wall is provided with connecting pipe 3, the connecting pipe 3 penetrates the filter barrel 8 with the cavity, valve 4 is arranged on the connecting pipe 3, the upper lateral wall of the cavity is provided with electric telescopic rod 14, the lower side one end of electric telescopic rod 14 is provided with connecting rod 16, one end of connecting rod 16 is provided with suction head 15 with water pump, the upper end of suction head 15 is provided with water pipe 12, the water pipe 12 penetrates the lateral wall of the sedimentation tank 1, the suction head 15 is in the upper end of the sedimentation tank 11, the sedimentation tank 11 is provided with scraping device, the scraping device includes rotating rod 21, limiting rod 22 and cleaning plate 20, the rotating rod 21 is arranged in parallel with the limiting rod 22, the cleaning plate 20 is in the rotating rod 21 and the limiting rod 22, the rotating rod 21 penetrates one end of the cleaning plate 20 and is connected with it by screw thread, the limiting rod 22 penetrates the other end of the cleaning plate 20 and is connected with it by sliding, the cleaning plate 20 is attached to the bottom wall of the sedimentation tank 11 and is connected by sliding, one side of the bottom wall of the sedimentation tank 11 is provided with opening, the opening is provided with sealing block 18, the sealing block 18 is detachably connected with the opening, the filter barrel 8 is provided with filter box 17, the filter box 17 is adapted to the inner lateral wall of the filter barrel 8 and is attached, the filter box 17 is provided with symmetrically hook 9 at both ends, the hook 9 is adapted to the upper lateral wall of the filter barrel 8, one lateral wall of the sedimentation tank 1 is provided with motor 10, the rotating rod 21 penetrates the lateral wall of the sedimentation tank 1 and is connected with the output end of the motor 10, one end of the water pipe 12 is provided with output pipe 13, the output pipe 13 is provided with switch, the switch is adapted to the output pipe 13, one side of the sedimentation tank 1 is provided with temperature controller 7.

[0025] In use, the filter box 17 is placed in the filter barrel 8, and is attached to the inner side wall of the filter barrel 8, and the hooks 9 at both ends of the filter box 17 are hung on the upper side wall of the filter barrel 8, so as to ensure that the filter box 17 does not move or fall off during the filtering process, and then the NMP waste liquid to be treated is poured into the filter barrel 8, and the waste liquid flows through the filter box 17 under the action of gravity, and the large particles of impurities and suspended matters are intercepted by the filter box 17, and then the valve 4 is opened, and the waste liquid after preliminary purification enters the sedimentation tank 11 through the connecting pipe 3, and the waste liquid in the sedimentation tank 11 is precipitated under the action of gravity, and at the same time, the motor 10 is started, and the motor 10 drives the rotating rod 21 to rotate, and under the limiting of the limiting rod 22, the cleaning plate 20 moves and is attached to the sedimentation tank 11, so as to ensure that the sediment can be effectively scraped and gathered to one side of the sedimentation tank 11, when the sedimentation treatment reaches a certain time, the electric telescopic rod 14 is started, and the suction head 15 is lowered through the connecting rod 16, and the suction head 15 starts to suck the supernatant in the upper layer of the sedimentation tank 11 under the action of the water pump, and during the sucking process, the electric telescopic rod 14 can adjust the height of the suction head 15 according to the need, so as to ensure that the supernatant can be completely sucked, and the sucked supernatant enters the output pipe 13 through the water pipe 12, and the switch is opened, and finally is discharged into a specified container or subsequent treatment equipment, when the sediment in the sedimentation tank 11 accumulates to a certain degree, the sealing block 18 is opened, and the sediment is cleaned out of the sedimentation tank 11 through the scraping device according to the above operation, and is subjected to subsequent treatment or recycling, and during the whole treatment process, the temperature controller 7 can monitor the temperature in the sedimentation tank 1 in real time, and automatically adjusts according to the set range.

[0026] In actual use, the sedimentation tank 1 needs to be provided with stable support to further improve the stability of the device, in order to meet the above requirements, in the embodiment, the bottom wall of the sedimentation tank 1 is provided with support rods 2, and the bottom wall of the support rod 2 is made of anti-skid material.

[0027] In actual use, it is necessary to facilitate the maintenance and maintenance of the sedimentation tank 11 by the operator, in order to meet the above requirements, in the embodiment, the front and side walls of the sedimentation tank 1 are provided with auxiliary doors 5, the auxiliary doors 5 are matched with the cavities, and the auxiliary doors 5 are provided with handles 6 on one side.

[0028] In actual use, it is necessary to facilitate the maintenance and maintenance of the sedimentation tank 11 by the operator, in order to meet the above requirements, in the embodiment, the bottom wall of the sedimentation tank 1 is provided with support rods 2, and the bottom wall of the support rod 2 is made of anti-skid material.

[0029] In order to explain the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the specific embodiments listed below are combined with the drawings for detailed description. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0030] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device applied to NMP waste liquid purification, comprising a precipitation tank (1), a filter barrel (8) and a precipitation pool (11), characterized in that: The cavity is arranged in the sediment tank (1), the sediment tank (11) is in the cavity and is matched with the cavity, the filter barrel (8) is arranged on the upper wall of the sediment tank (1), the bottom wall of the filter barrel (8) is provided with a connecting pipe (3), the connecting pipe (3) penetrates the filter barrel (8) and is connected with the cavity, the connecting pipe (3) is provided with a valve (4), the upper wall of the cavity is provided with an electric telescopic rod (14), one end of the lower side of the electric telescopic rod (14) is provided with a connecting rod (16), one end of the connecting rod (16) is provided with a suction head (15) with a water pump, the upper end of the suction head (15) is provided with a water pipe (12), the water pipe (12) penetrates the side wall of the sediment tank (1), the suction head (15) is arranged on the upper end of the sediment tank (11), the sediment tank (11) is provided with a scraping device, the scraping device comprises a rotating rod (21), a limiting rod (22) and a cleaning plate (20), the rotating rod (21) is arranged in parallel with the limiting rod (22), the cleaning plate (20) is arranged on the rotating rod (21) and the limiting rod (22), one end of the rotating rod (21) penetrates the cleaning plate (20) and is threadedly connected with the cleaning plate (20), the limiting rod (22) penetrates the other end of the cleaning plate (20) and is slidably connected with the cleaning plate (20), the cleaning plate (20) is attached to and slidably connected with the bottom wall of the sediment tank (11), one side of the bottom wall of the sediment tank (11) is provided with an opening, the opening is provided with a sealing block (18), and the sealing block (18) is detachably connected with the opening.

2. The pre-treatment device for purifying NMP waste liquid according to claim 1, characterized in that: The filter barrel (8) is provided with a filter box (17), the filter box (17) is matched and attached with the inner wall of the filter barrel (8), and the filter box (17) is provided with symmetrical hooks (9) at both ends, the hooks (9) are matched with the upper wall of the filter barrel (8).

3. The pre-treatment device for purifying NMP waste liquid according to claim 2, characterized in that: The support rod (2) is arranged at the bottom wall of the sediment tank (1), and the bottom wall of the support rod (2) is made of anti-skid material.

4. The pre-treatment device for purifying NMP waste liquid according to claim 3, characterized in that: The rotating rod (21) penetrates the side wall of the sediment tank (1) and is connected with the output end of the motor (10).

5. The pre-treatment device for purifying NMP waste liquid according to claim 4, characterized in that: One end of the water pipe (12) is provided with an output pipe (13), the output pipe (13) is provided with a switch, and the switch is matched with the output pipe (13).

6. The pre-treatment device for purifying NMP waste liquid according to claim 5, characterized in that: The auxiliary door (5) is arranged on the front and side walls of the sediment tank (1), the auxiliary door (5) is matched with the cavity, and the auxiliary door (5) is provided with a handle (6) on one side.

7. The pre-treatment device for purifying NMP waste liquid according to claim 6, characterized in that: The bottom wall of the sealing block (18) is provided with a dismounting block (19).

8. The pre-treatment device for purifying NMP waste liquid according to claim 7, characterized in that: The temperature controller (7) is arranged on one side of the sediment tank (1).

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