A water-based paint recycling device

Abstract

The utility model relates to the technical field of paint recovery, provide a water -based paint recovery device, include: recovery box, primary filter component, circulating flushing component, membrane separation component, concentrated paint liquid discharge ware and clean water liquid discharge ware, primary filter component detachable setting is in the upper portion of recovery box, membrane separation component sets up below primary filter component, the concentrated paint cavity is to concentrated paint cavity on the upside of membrane separation component, clean water cavity is to clean water cavity under membrane separation component, the liquid inlet end and liquid outlet end of circulating flushing component set up in concentrated paint cavity and with membrane separation component position corresponds, concentrated paint liquid discharge ware sets up in one side of concentrated paint cavity, clean water liquid discharge ware sets up in one side of clean water cavity, the utility model discloses a primary filter component is designed as pull -out type, and cooperate circulating flushing component to the ultrafiltration membrane of the oblique setting carries out sustained flushing, has improved the filtration efficiency and recovery rate significantly, has simplified maintenance procedure simultaneously, compact structure, strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of paint recycling technology, and in particular to a water-based paint recycling device. Background Technology

[0002] Water-based coatings are widely used due to their environmentally friendly properties. However, during production and use, operations such as equipment cleaning and color changing generate a large amount of waste liquid containing coating resins, pigments, and impurities. Direct discharge of this waste liquid pollutes the environment and wastes resources.

[0003] As disclosed in application number CN202023345164.8, a water-based coating recycling device includes a rectangular recycling tank with an opening at the top and a cover on the opening. A discharge pipe is provided at the bottom of the recycling tank. A grid and a filter screen are spaced vertically inside the recycling tank, dividing the recycling tank into an upper tank, a middle tank, and a lower tank. Through holes are provided on both the left and right sides of the middle tank, and a sealing plate is provided on the through holes to close the through holes.

[0004] However, existing recycling devices typically employ multi-stage filtration and membrane separation technologies, but still have some shortcomings. For example, primary filtration devices are mostly fixed, making cleaning and replacement inconvenient and maintenance inefficient after the filter screen or filter element becomes clogged. The unreasonable layout of the membrane separation components can easily lead to excessively high local concentrations on the membrane surface, resulting in rapid membrane fouling and decreased separation efficiency. Utility Model Content

[0005] To address the aforementioned problems, this invention provides a water-based paint recycling device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A water-based paint recovery device includes: a recovery tank, a primary filtration component, a circulating flushing component, a membrane separation component, a concentrated paint drainer, and a clean water drainer. The primary filtration component is detachably mounted on the upper part of the recovery tank, and the membrane separation component is located below the primary filtration component. The upper side of the membrane separation component is a concentrated paint chamber, and the lower side of the membrane separation component is a clean water chamber. The inlet and outlet ends of the circulating flushing component are located within the concentrated paint chamber and correspond to the positions of the membrane separation component. The concentrated paint drainer is located on one side of the concentrated paint chamber, and the clean water drainer is located on one side of the clean water chamber.

[0007] Preferably, the primary filtration assembly includes a sliding limiting component and a pull-out filter. The pull-out filter is detachably mounted on the upper part of the recycling bin, and the sliding limiting component is mounted on one side of the pull-out filter to restrict its movement.

[0008] Preferably, the pull-out filter includes: an activated carbon filter body, a mounting plate, and a handle. The handle is fixedly connected to the activated carbon filter body via the mounting plate, and the mounting plate is used in conjunction with a sliding limit assembly.

[0009] Preferably, the sliding limiting assembly includes: a sliding base and a sliding limiting plate. The sliding base is fixedly installed on one side of the recycling bin, and the sliding limiting plate slides vertically within the sliding base. The lower end of the sliding limiting plate cooperates with the mounting plate.

[0010] Preferably, the circulating flushing assembly includes a circulating flushing pipe and a circulating pump. The inlet and outlet ends of the circulating flushing pipe are located inside the concentrated coating cavity and correspond to the membrane separation assembly. The circulating pump is located on the circulating flushing pipe.

[0011] Preferably, the membrane separation assembly includes: a water-passing plate, an ultrafiltration membrane, and a central support rod. The ultrafiltration membrane and the central support rod are disposed on the water-passing plate. Two sets of ultrafiltration membranes are disposed, and the two sets of ultrafiltration membranes are symmetrically inclined through the central support rod.

[0012] Preferably, the concentrated coating drainer is equipped with a first solenoid valve.

[0013] Preferably, the water drainer is equipped with a second solenoid valve.

[0014] Preferably, the recycling bin is a movable structure, and omnidirectional wheels are installed at the bottom of the recycling bin.

[0015] The advantages of this utility model are as follows: the detachable pre-filter component facilitates cleaning and replacement; the membrane separation component facilitates the concentration of water-based coatings; the circulating flushing component prevents clogging of the membrane separation component surface, thereby extending the equipment's service life; and the concentrated coating drainer and clear water drainer facilitate the controlled discharge of clear liquid and concentrated liquid. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a partial enlarged view of the primary filter component of this utility model; Figure 3 This is a front view of the pull-out filter of this utility model; Figure 4 This is a front view of the sliding limit component of this utility model; Figure 5 This is a side view of the circulating flushing assembly of this utility model; Figure 6 This is a front view of the membrane separation assembly of this utility model; Figure 7 This is a configuration diagram of the solenoid valve of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Recycling bin; 2. Pre-filtration assembly; 3. Circulation flushing assembly; 4. Membrane separation assembly; 5. Concentrated paint drainer; 6. Clean water drainer; 21. Sliding limit assembly; 22. Pull-out filter; 221. Activated carbon filter body; 222. Mounting plate; 223. Handle; 211. Slide seat; 212. Sliding limit plate; 31. Circulation flushing pipe; 32. Circulation pump; 41. Water flow plate; 42. Ultrafiltration membrane; 43. Central support rod; 51. First solenoid valve; 61. Second solenoid valve; 11. Casters. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1, combined with Figure 1 Explanation: A water-based paint recovery device includes: a recovery tank 1, a pre-filtration assembly 2, a circulating flushing assembly 3, a membrane separation assembly 4, a concentrated paint drainer 5, and a clean water drainer 6. The pre-filtration assembly 2 is detachably mounted on the upper part of the recovery tank 1. The membrane separation assembly 4 is located below the pre-filtration assembly 2. The upper side of the membrane separation assembly 4 is a concentrated paint chamber, and the lower side is a clean water chamber. The inlet and outlet ends of the circulating flushing assembly 3 are located within the concentrated paint chamber and correspond to the positions of the membrane separation assembly 4. The concentrated paint drainer 5 is located on one side of the concentrated paint chamber, and the clean water drainer 6 is located on one side of the clean water chamber. This configuration, through the detachable pre-filtration assembly 2 and the circulating flushing assembly 3, significantly improves filtration efficiency and recovery rate while simplifying the maintenance process.

[0022] Example 2, based on Example 1, combined with... Figure 2 , Figure 3 and Figure 4 Explanation: The primary filtration assembly 2 includes a sliding limiting assembly 21 and a pull-out filter 22. The pull-out filter 22 is detachably mounted on the upper part of the recycling bin 1, and the sliding limiting assembly 21 is located on one side of the pull-out filter 22 to restrict its movement. This configuration allows the sliding limiting assembly 21 to limit the pull-out filter 22, preventing it from detaching from the recycling bin 1 during use.

[0023] The pull-out filter 22 includes: an activated carbon filter body 221, a mounting plate 222, and a handle 223. The handle 223 is fixedly connected to the activated carbon filter body 221 via the mounting plate 222, and the mounting plate 222 works in conjunction with the sliding limit assembly 21. With this configuration, the activated carbon filter body 221 is used for initial filtration, and the handle 223 is used to pull out the entire pull-out filter 22, thus facilitating maintenance.

[0024] The sliding limiting assembly 21 includes a slide base 211 and a sliding limiting plate 212. The slide base 211 is fixedly installed on one side of the recycling bin 1, and the sliding limiting plate 212 slides vertically within the slide base 211. The lower end of the sliding limiting plate 212 cooperates with the mounting plate 222. With this configuration, when locked, gravity is used to keep the sliding limiting plate 212 at its lowest position, thereby limiting the pull-out filter 22.

[0025] Example 3, based on Example 2, combined with Figure 5 and Figure 6 Explanation: The circulating flushing assembly 3 includes a circulating flushing pipe 31 and a circulating pump 32. The inlet and outlet ends of the circulating flushing pipe 31 are located inside the concentrated coating cavity and correspond to the membrane separation assembly 4. The circulating pump 32 is located on the circulating flushing pipe 31.

[0026] The membrane separation assembly 4 includes a water-passing plate 41, an ultrafiltration membrane 42, and a central support rod 43. The ultrafiltration membrane 42 and the central support rod 43 are disposed on the water-passing plate 41. Two sets of ultrafiltration membranes 42 are disposed, and the two sets of ultrafiltration membranes 42 are symmetrically inclined through the central support rod 43. This arrangement allows the inclined ultrafiltration membranes 42 to have better self-cleaning ability and to create a certain angle between them and the water flow of the circulating flushing assembly 3, thereby improving the flushing effect and ensuring that they do not clog during long-term use.

[0027] Example 4, based on Example 3, combined with Figure 7 Explanation: The concentrated coating drainer 5 is equipped with a first solenoid valve 51. This configuration facilitates control over the timing of concentrated coating discharge.

[0028] The clean water drainer 6 is equipped with a second solenoid valve 61. This configuration facilitates control over the timing of clean water discharge.

[0029] The recycling bin 1 is a movable structure, and omnidirectional wheels 11 are installed at the bottom of the recycling bin 1. This configuration makes it easy to move the device to the location where the paint needs to be recycled.

[0030] The working principle of this utility model is as follows: The device is moved to the work location and secured by the brakes on the casters 11. Water-based paint waste liquid is poured into the primary filtration assembly 2 at the top of the recovery tank 1. After preliminary filtration by the activated carbon filter body 221, the waste liquid enters the lower concentrated paint chamber. The circulation pump 32 is started, and the circulation flushing assembly 3 begins operation, continuously flushing the surface of the inclined ultrafiltration membrane 42. Under the action of pressure difference, water in the liquid within the concentrated paint chamber permeates through the ultrafiltration membrane 42, flows through the water plate 41 into the clear water chamber, while the paint components are retained, resulting in a concentrated... As the concentration of the coating in the concentrated coating chamber increases, when the liquid level in the concentrated coating chamber reaches the set height or the concentration reaches the required level, the control system opens the first solenoid valve 51 and discharges the recovered concentrated coating through the concentrated coating drain 5. At the same time, the clear water in the clear water chamber is discharged through the clear water drain 6 and the second solenoid valve 61, which can be collected for reuse. When it is necessary to clean the primary filter component 2, simply lift the sliding limit plate 212 upwards, and then pull out the entire pull filter 22 through the handle 223, clean it, and then reinstall it. The operation is very convenient.

[0031] For those skilled in the art, this utility model is not limited to the details of the exemplary embodiments described above, and can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model; therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A water-based paint recycling device, characterized in that, include: The recycling tank (1), the primary filter assembly (2), the circulating flushing assembly (3), the membrane separation assembly (4), the concentrated coating drainer (5), and the clean water drainer (6) are provided. The primary filter assembly (2) is detachably installed on the upper part of the recycling tank (1). The membrane separation assembly (4) is installed below the primary filter assembly (2). The upper side of the membrane separation assembly (4) is the concentrated coating cavity, and the lower side of the membrane separation assembly (4) is the clean water cavity. The inlet and outlet of the circulating flushing assembly (3) are located in the concentrated coating cavity and correspond to the position of the membrane separation assembly (4). The concentrated coating drainer (5) is installed on one side of the concentrated coating cavity, and the clean water drainer (6) is installed on one side of the clean water cavity.

2. The water-based paint recycling device according to claim 1, characterized in that, The primary filtration component (2) includes a sliding limit component (21) and a pull-out filter (22). The pull-out filter (22) is detachably mounted on the upper part of the recycling bin (1). The sliding limit component (21) is mounted on one side of the pull-out filter (22) to restrict the movement of the pull-out filter (22).

3. The water-based paint recycling device according to claim 2, characterized in that, The pull-out filter (22) includes: an activated carbon filter body (221), a mounting plate (222), and a handle (223). The handle (223) is fixedly connected to the activated carbon filter body (221) through the mounting plate (222). The mounting plate (222) is used in conjunction with the sliding limit component (21).

4. The water-based paint recycling device according to claim 2, characterized in that, The sliding limit assembly (21) includes a slide base (211) and a sliding limit plate (212). The slide base (211) is fixedly installed on one side of the recycling bin (1), and the sliding limit plate (212) slides vertically in the slide base (211). The lower end of the sliding limit plate (212) is used in conjunction with the mounting plate (222).

5. The water-based paint recycling device according to claim 1, characterized in that, The circulating flushing assembly (3) includes a circulating flushing pipe (31) and a circulating pump (32). The inlet and outlet of the circulating flushing pipe (31) are located in the concentrated coating cavity and correspond to the membrane separation assembly (4). The circulating pump (32) is located on the circulating flushing pipe (31).

6. The water-based paint recycling device according to claim 5, characterized in that, The membrane separation assembly (4) includes: a water-passing plate (41), an ultrafiltration membrane (42) and a central support rod (43). The ultrafiltration membrane (42) and the central support rod (43) are arranged on the water-passing plate (41). There are two sets of ultrafiltration membranes (42), and the two sets of ultrafiltration membranes (42) are symmetrically inclined through the central support rod (43).

7. The water-based paint recycling device according to claim 1, characterized in that, The concentrated coating drainer (5) is equipped with a first solenoid valve (51).

8. The water-based paint recycling device according to claim 1, characterized in that, The clean water drainer (6) is equipped with a second solenoid valve (61).

9. A water-based paint recycling device according to claim 1, characterized in that, The recycling bin (1) is a movable structure, and the bottom of the recycling bin (1) is equipped with casters (11).

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