NMP waste liquid pretreatment and impurity removal structure

Abstract

The utility model relates to NMP waste liquid processing field, specifically disclose a NMP waste liquid pretreatment removes the structure of impurity, including sedimentation tank and removes the structure of impurity, sets up the water inlet and the drain in sedimentation tank, removes the structure of impurity and includes a plurality of adsorption board and filter screen, installs in sedimentation tank adsorption board, sets up a plurality of filter gaps on adsorption board, sets up a plurality of filter board placing groove in adsorption board side, sets up filter board in filter board placing groove, sets up in the opening place of sedimentation tank filter screen, through setting up adsorption board in sedimentation tank, and setting up filter gap and filter board in adsorption board, can through filter board to filter out the big particle impurity in the NMP waste liquid of sedimentation in sedimentation tank, make some unable to precipitate big particle impurity also can be removed.

Description

Technical Field

[0001] This utility model relates to the field of NMP waste liquid treatment, specifically to a structure for removing impurities from an NMP waste liquid pretreatment tank. Background Technology

[0002] NMP (N-methylpyrrolidone) wastewater treatment is an important environmental protection task in industrial production. It requires the adoption of scientific and reasonable treatment processes that take into account the characteristics of the wastewater, treatment efficiency, cost, and environmental protection requirements.

[0003] NMP waste liquid pretreatment is a key step in the entire treatment process, aiming to remove suspended solids, oils and particulate impurities from the waste liquid, reduce the load on subsequent treatment, and ensure the stable operation of the treatment system.

[0004] The existing pretreatment method involves settling particulate impurities in the waste liquid in a sedimentation tank, followed by manual removal of suspended solids. Although this method is low-cost, it has poor filtration efficiency. Some impurities in NMP waste liquid cannot be settled, and this method cannot remove them. Therefore, a pretreatment tank is needed to solve this problem. Utility Model Content

[0005] This utility model aims to solve the technical problems mentioned in the background section above, and proposes the following technical solutions:

[0006] A purification structure for an NMP waste liquid pretreatment tank includes a sedimentation tank and a purification structure. The sedimentation tank is provided with an inlet and an outlet, and the outlet is provided with a valve. The purification structure includes several adsorption plates and a filter screen. Several slots are symmetrically arranged on both sides of the inner wall of the sedimentation tank. Positioning sliders are respectively provided on both sides of the adsorption plates. The adsorption plates are slidably connected to the slots in the sedimentation tank through the positioning sliders. Several filter notches are provided on the adsorption plates. Several filter plate placement slots are provided on the sides of the adsorption plates. The number of filter plate placement slots is the same as the number of filter notches. The filter plate placement slots are connected to the filter notches, and filter plates are placed in the filter plate placement slots.

[0007] The sedimentation tank opening is also provided with a filter screen mounting base, which includes two mounting seats and a mounting roller. The mounting roller is installed between the two mounting seats and is rotatably connected to the two mounting seats. The filter screen is wound around the mounting roller. The sedimentation tank has a hook on the inner wall on the side away from the filter screen mounting base.

[0008] Limited, the adsorption plate is installed at an angle inside the sedimentation tank.

[0009] Limited, the filter notches on the adsorption plate are arranged at an angle on the adsorption plate.

[0010] Limited, the top of the adsorption plate is provided with a handle.

[0011] Limited, the adsorption plate has a cavity inside, and a magnet is placed inside the cavity.

[0012] The beneficial effects of this utility model are:

[0013] 1. By installing an adsorption plate in the sedimentation tank, and by setting filter gaps and a filter plate in the adsorption plate, large particulate impurities in the NMP waste liquid settled in the sedimentation tank can be filtered out through the filter plate, so that some large particulate impurities that cannot be settled can also be removed.

[0014] 2. By installing a filter screen at the opening of the sedimentation tank, larger debris such as leaves and plastic bags can be prevented from entering the open sedimentation tank.

[0015] 3. By installing a handle on the top of the adsorption plate, staff can lift the adsorption plate to facilitate cleaning and replacement.

[0016] 4. By setting a magnet inside the adsorption plate, the metal impurities in the NMP waste liquid can be adsorbed by the magnet, thereby improving the impurity removal effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the adsorption plate structure in this utility model;

[0020] Figure 4 This is a cross-sectional view of the adsorption plate in this utility model;

[0021] Figure 5 This is a schematic diagram of the adsorption plate structure in Example 2;

[0022] Figure 6 This is a cross-sectional view of the adsorption plate in Example 3.

[0023] In the diagram: 1. Sedimentation tank; 1-1. Inlet; 1-2. Outlet; 2. Impurity removal structure; 2-1. Adsorption plate; 2-2. Filter screen; 3. Valve; 4. Slot; 5. Positioning slider; 6. Filter notch; 7. Filter plate placement slot; 8. Filter plate; 9. Filter screen mounting base; 9-1. Mounting seat; 9-2. Mounting roller; 10. Hook; 11. Handle; 12. Cavity; 13. Magnet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that 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. The connection methods described by the terms "fixed connection" and "fixed setting" include, but are not limited to, "welding," "riveting," "adhesion," and "threaded connection." The terms "comprising," "including," or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus.

[0026] The terms “upper,” “lower,” “front,” “back,” “left,” “right,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1

[0028] Reference Figure 1-4 A purification structure for an NMP waste liquid pretreatment tank includes a sedimentation tank 1 and a purification structure 2. The sedimentation tank 1 is provided with an inlet 1-1 and an outlet 1-2. A valve 3 is provided on the outlet 1-2. The purification structure 2 includes several adsorption plates 2-1 and filter screens 2-2. Several slots 4 are symmetrically arranged on both sides of the inner wall of the sedimentation tank 1. Positioning sliders 5 are respectively provided on both sides of the adsorption plates 2-1. The adsorption plates 2-1 are slidably connected to the slots 4 through the positioning sliders 5 and installed in the sedimentation tank 1. Several filter notches 6 are provided on the adsorption plates 2-1. Several filter plate placement grooves 7 are provided on the side of the adsorption plates 2-1. The number of filter plate placement grooves 7 is the same as the number of filter notches 6. The filter plate placement grooves 7 are connected to the filter notches 6. Filter plates 8 are placed in the filter plate placement grooves 7.

[0029] A filter screen mounting base 9 is also provided at the opening of the sedimentation tank 1. The filter screen mounting base 9 includes two mounting seats 9-1 and a mounting roller 9-2. The mounting roller 9-2 is installed between the two mounting seats 9-1 and is rotatably connected to the two mounting seats 9-1. The filter screen 2-2 is wrapped around the mounting roller 9-2. A hook 10 is provided on the inner wall of the sedimentation tank 1 on the side away from the filter screen mounting base 9.

[0030] Due to limitations, the adsorption plate 2-1 is installed at an angle inside the sedimentation tank 1.

[0031] Due to limitations, the filter notch 6 on the adsorption plate 2-1 is set at an angle on the adsorption plate 2-1.

[0032] In actual operation, filter plate 8 is inserted into the filter plate placement slot 7 on adsorption plate 2-1, and then adsorption plate 2-1 with filter plate 8 inserted is inserted into sedimentation tank 1 along slot 4. NMP waste liquid is added to sedimentation tank 1 for sedimentation. NMP waste liquid will pass through filter plates 8 one after another. During this period, larger particles of impurities will be filtered by filter plates 8 on adsorption plate 2-1. When the waste liquid is discharged through drain outlet 1-2, the impurities will be removed. During the sedimentation process, filter screen 2-2 at the opening of sedimentation tank can be covered at the opening of sedimentation tank to prevent larger debris such as leaves and plastic bags from being mixed into the open sedimentation tank.

[0033] In this way, most of the large particles in the NMP waste liquid that cannot be settled will be intercepted by the filter plate, resulting in fewer impurities in the settled and filtered NMP waste liquid.

[0034] Example 2

[0035] Reference Figure 5 The difference between this embodiment and embodiment one is that this embodiment provides a handle 11 on the top of the adsorption plate 2-1, which makes it convenient for staff to operate when the adsorption plate needs to be replaced or cleaned.

[0036] Example 3

[0037] Reference Figure 6 The difference between this embodiment and embodiment one is that this embodiment sets a cavity 12 in the adsorption plate 2-1 and sets a magnet 13 in the cavity 12. The magnet 13 on the adsorption plate 2-1 can adsorb small metal impurities in the waste liquid, thereby improving the impurity removal effect.

Claims

1. A pretreatment tank impurity removal structure for NMP waste liquid, comprising a sedimentation tank (1) and an impurity removal structure (2), wherein the sedimentation tank (1) is provided with an inlet (1-1) and an outlet (1-2), and the outlet (1-2) is provided with a valve (3), characterized in that, The impurity removal structure (2) includes several adsorption plates (2-1) and filter screens (2-2). Several slots (4) are symmetrically arranged on both sides of the inner wall of the sedimentation tank (1). Positioning sliders (5) are respectively arranged on both sides of the adsorption plate (2-1). The adsorption plate (2-1) is slidably connected to the slots (4) through the positioning sliders (5) and installed in the sedimentation tank (1). Several filter notches (6) are provided on the adsorption plate (2-1). Several filter plate placement slots (7) are provided on the side of the adsorption plate (2-1). The number of filter plate placement slots (7) is the same as the number of filter notches (6). The filter plate placement slots (7) are connected to the filter notches (6). Filter plates (8) are arranged in the filter plate placement slots (7). The sedimentation tank (1) is also provided with a filter screen mounting base (9) at the opening. The filter screen mounting base (9) includes two mounting seats (9-1) and a mounting roller (9-2). The mounting roller (9-2) is installed between the two mounting seats (9-1) and is rotatably connected to the two mounting seats (9-1). The filter screen (2-2) is wound around the mounting roller (9-2). The sedimentation tank (1) is provided with a hook (10) on the inner wall of the side away from the filter screen mounting base (9).

2. The NMP waste liquid pretreatment tank impurity removal structure according to claim 1, characterized in that, The adsorption plate (2-1) is installed at an angle inside the sedimentation tank (1).

3. The NMP waste liquid pretreatment tank impurity removal structure according to claim 1, characterized in that, The filter notch (6) on the adsorption plate (2-1) is inclined.

4. The NMP waste liquid pretreatment tank impurity removal structure according to claim 1, characterized in that, A handle (11) is provided on the top of the adsorption plate (2-1).

5. The NMP waste liquid pretreatment tank impurity removal structure according to claim 1, characterized in that, The adsorption plate (2-1) has a cavity (12) inside, and a magnet (13) is provided inside the cavity (12).

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