Water-based paint waste solvent filtering, extracting and storing technical device

Abstract

The utility model discloses a water-based paint waste solvent filtering, extracting and storing technical device which comprises a machine frame and a filtering box, the filtering box comprises a box body and a sealing plate, a discharging hopper is arranged at the bottom of the box body, a recycling pipe is arranged at the bottom of the discharging hopper, a butterfly valve is assembled on the recycling pipe, a liquid inlet pipe and a feeding pipe are arranged at the top of the sealing plate, and the liquid inlet pipe is connected with the feeding pipe. A plurality of filter plates are inserted into one side of the box body, and slag discharging pipelines are arranged above the inner sides of the plurality of filter plates. According to the technical device for filtering, extracting and storing the waste solvent of the water-based paint, a plurality of filter plates are arranged, so that on one hand, a multi-layer screen layout is formed in the box body, the filtering efficiency is improved, and on the other hand, as the filter plates are distributed along the inclined direction, solid particles and impurities which do not pass through the filter plates are favorably accumulated towards one side, and the blockage of a filtering medium is reduced; and by arranging a slag discharging pipeline, solid particles and impurities accumulated on the filter plate can be efficiently cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of waterborne paint wastewater treatment, in particular to a technical device for filtering and extracting waste solvent of waterborne paint. Background Art

[0002] The process of filtering and extracting waste solvent of waterborne paint involves multiple steps, and the specific method is as follows:

[0003] Collection and storage: First, the waste solvent obtained after using the waterborne paint cleaning agent needs to be centrally collected and stored for subsequent treatment.

[0004] Salting out: The stored waste liquid is transported to the salting-out device, and salting-out treatment is carried out by adding a salting-out agent (such as calcium chloride, and the addition amount of calcium chloride is 5% of the waste solvent). In the salting-out process, substances such as high molecular resin in the waste liquid will precipitate to form upper clear liquid and lower precipitate.

[0005] Filtration: The upper clear liquid after salting out is transported to the filter for filtration. Through filtration, impurities in the clear liquid can be further removed to improve its purity.

[0006] As described above, the current filtering and extracting equipment for waste solvent of waterborne paint usually realizes the filtering operation by means of a single horizontally placed sieve mesh. On the one hand, it is not convenient to control the filtering effect. On the other hand, it is easy to cause the blockage of the filter mesh. Therefore, the applicant designs a filtering and extracting technology for waterborne paint solvent to solve the above problems. Content of the Utility Model

[0007] In view of the deficiencies of the prior art, the utility model provides a technical device for filtering and extracting waste solvent of waterborne paint, which solves the problems that the current filtering and extracting equipment for waste solvent of waterborne paint usually realizes the filtering operation by means of a single horizontally placed single-layer sieve mesh, is not convenient to control the filtering effect, and at the same time, is easy to cause the blockage of the filter mesh.

[0008] To achieve the above purposes, the utility model is realized through the following technical solutions: A technical device for filtering and extracting waste solvent of waterborne paint, including a frame and a filtering box erected on the frame.

[0009] The filtering box includes a box body and a sealing plate flange-assembled on the top of the box body. The bottom of the box body is provided with a blanking hopper in a conical structure. The bottom of the blanking hopper is provided with a recovery pipe distributed vertically, and a butterfly valve is assembled on the recovery pipe. The top of the sealing plate is provided with a liquid inlet pipe and a feeding pipe both distributed vertically. A plurality of filter plates are inserted on one side of the box body, and all of them are distributed obliquely. Above the inner sides of the plurality of filter plates, a slag discharging pipeline installed on the box body is provided.

[0010] Preferably, the slag discharge pipeline includes a first flushing pipe and a first slag discharge pipe respectively and communicatively assembled on both side walls of the box body. The first flushing pipe and the first slag discharge pipe are coaxially distributed and both are equipped with first solenoid valves.

[0011] Preferably, it further includes a plurality of flushing pipelines respectively and parallelly erected above a plurality of filter plates along the inclined direction of the filter plates. The flushing pipeline includes a second flushing pipe and a second slag discharge pipe respectively and communicatively assembled on both side walls of the box body. The second flushing pipe and the second slag discharge pipe are coaxially distributed and both are equipped with second solenoid valves.

[0012] Preferably, the specifications of the sieve holes of the plurality of filter plates gradually decrease from top to bottom.

[0013] Preferably, a plurality of clamping structures for limiting the filter plates are arranged in the box body. The clamping structure includes two card seats symmetrically distributed and fixedly connected to the inner side walls of both sides of the box body. The top and bottom of the two card seats are both provided with slopes inclined inward. Beneficial effects

[0014] The utility model provides a technical device for filtering and extracting waste solvent of water-based paint. Compared with the prior art, it has the following beneficial effects:

[0015] In the technical device for filtering and extracting waste solvent of water-based paint, by arranging a plurality of filter plates, on the one hand, a multi-layer sieve layout is formed in the box body, improving the filtering quality and filtering efficiency. At the same time, since the filter plates are distributed along the inclined direction, it helps the solid particles and impurities that have not passed through the filter plates to accumulate on one side, reducing the blockage of the filtering medium and reducing the filtering resistance of the filter plates. In addition, by arranging a slag discharge pipeline, it helps to efficiently clean the solid particles and impurities accumulated on the filter plates. Description of the drawings

[0016] Figure 1 It is a schematic structural diagram of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the filter box of the utility model;

[0018] Figure 3 It is a schematic structural diagram of the slag discharge pipeline of the utility model;

[0019] Figure 4 It is a schematic structural diagram of the flushing pipeline of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the clamping structure of the utility model;

[0021] In the figure:

[0022] 100, frame;

[0023] 200. Filter box;

[0024] 210. Box body; 220. Sealing plate; 230. Discharge hopper; 240. Recovery pipe; 250. Butterfly valve; 260. Filter plate; 270. Slag discharge pipeline; 280. Flushing pipeline; 290. Clamping structure;

[0025] 2210. Liquid inlet pipe; 2220. Feeding pipe;

[0026] 2710. First flushing water pipe; 2720. First slag discharge pipe; 2730. First solenoid valve;

[0027] 2810. Second flushing water pipe; 2820. Second slag discharge pipe; 2830. Second solenoid valve;

[0028] 2910. Clamping seat; 2920. Slope surface. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-5 , the present invention provides a technical solution: a technical device for filtering and extracting waste solvent of water-based paint, including a frame 100 and a filter box 200 mounted on the frame 100. The filter box 200 includes a box body 210 and a sealing plate 220 flange-mounted on the top of the box body 210. A discharge hopper 230 in a conical structure is provided at the bottom of the box body 210. A recovery pipe 240 distributed vertically is provided at the bottom of the discharge hopper 230, and a butterfly valve 250 is assembled on the recovery pipe 240. Liquid inlet pipes 2210 and feeding pipes 2220 both distributed vertically are opened at the top of the sealing plate 220. A plurality of filter plates 260 distributed obliquely are inserted on one side of the box body 210. Above the inner sides of the plurality of filter plates 260, a slag discharge pipeline 270 mounted on the box body 210 is provided.

[0031] Based on the above structure settings, the water-based paint waste solvent filtration and extraction technology device consists of a frame 100 and a filtration box 200. Among them, the filtration box 200 is used for filtering the supernatant of the water-based paint waste solvent after salting-out precipitation treatment, and the frame 100 provides structural support for the erection of the filtration box 200. Specifically, during the working process, the supernatant to be treated is input into the box body 210 through the liquid inlet pipe 2210 and is screened successively through a number of filter plates 260. The solid particles and impurities that do not pass through the filter plates 260 will remain on the filter plates 260 and accumulate along the inclined surface of the filter plates 260 towards one side of the filter plates 260. When the accumulation amount on one side of the filter plates 260 is relatively large, the accumulation can be cleaned by means of the slag discharge pipeline 270. This water-based paint waste solvent filtration and extraction technology device, by setting a number of filter plates 260, on the one hand, forms a multi-layer sieve layout in the box body 210, improves the filtration quality, and enhances the filtration efficiency. At the same time, since the filter plates 260 are distributed along the inclined direction, it helps the solid particles and impurities that do not pass through the filter plates 260 to accumulate towards one side, reduces the blockage of the filtration medium, and reduces the filtration resistance of the filter plates 260. In addition, by setting the slag discharge pipeline 270, it helps to efficiently clean the solid particles and impurities accumulated on the filter plates 260.

[0032] Further, the slag discharge pipeline 270 includes a first flushing water pipe 2710 and a first slag discharge pipe 2720 that are respectively connected and assembled on the two side walls of the box body 210. The first flushing water pipe 2710 and the first slag discharge pipe 2720 are coaxially distributed and both are equipped with first solenoid valves 2730. Among them, the slag discharge pipeline 270 is mainly used to flush and output the solid particles and impurities accumulated on one side of the filter plates 260. The flushing water is pumped into the box body 210 through the first flushing water pipe 2710 to push and scour the accumulation on the filter plates 260, so as to discharge the accumulation through the first slag discharge pipe 2720. The two first solenoid valves 2730 are respectively used to control the on-off of the first flushing water pipe 2710 and the first slag discharge pipe 2720.

[0033] Further, it also includes a number of flushing pipelines 280 that are respectively parallel to and erected above a number of filter plates 260 along the inclined direction of the filter plates 260. The flushing pipelines 280 include a second flushing water pipe 2810 and a second slag discharge pipe 2820 that are respectively connected and assembled on the two side walls of the box body 210. The second flushing water pipe 2810 and the second slag discharge pipe 2820 are coaxially distributed and both are equipped with second solenoid valves 2830. Among them, the flushing pipelines 280 are used for flushing the entire surface of the filter plates 260. The flushing water is pumped into the box body 210 through the second flushing water pipe 2810 to scour the impurities on the surface of the filter plates 260 from top to bottom, so as to discharge the small impurities adhered to the filter plates 260 through the second slag discharge pipe 2820. The two second solenoid valves 2830 are respectively used to control the on-off of the second flushing water pipe 2810 and the second slag discharge pipe 2820.

[0034] Further, the sieve hole specifications of several filter plates 260 gradually decrease from top to bottom. Among them, the sieve hole precision specifications of the filter plates 260 gradually increase from top to bottom, the sieve hole size gradually decreases, and compared with the single-layer filter net, it has higher filtering efficiency and lower filtering resistance.

[0035] Further, several clamping structures 290 for limiting the filter plates 260 are provided in the box body 210. The clamping structure 290 includes two card seats 2910 that are symmetrically distributed and fixedly connected to the two inner side walls of the box body 210. The top and bottom of the two card seats 2910 are provided with slopes 2920 that incline inward. Among them, a receiving space for inserting the filter plate 260 is formed between the two card seats 2910, and the slopes 2920 incline inward to form a diversion structure, which can prevent impurities from accumulating on the top of the card seats 2910.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-based paint waste solvent filtering and storage technology device, characterized in that: It comprises a frame (100) and a filter box (200) mounted on the frame (100); The filter box (200) comprises a box body (210) and a sealing plate (220) with a flange mounted on the top of the box body (210); a lower hopper (230) with a pyramidal structure is provided at the bottom of the box body (210); a recovery pipe (240) distributed in a vertical direction is provided at the bottom of the lower hopper (230); a butterfly valve (250) is mounted on the recovery pipe (240); a liquid inlet pipe (2210) and a feeding pipe (2220) both distributed in a vertical direction are provided at the top of the sealing plate (220); a plurality of filter plates (260) distributed in an inclined direction are inserted on one side of the box body (210); and a slag discharge pipeline (270) mounted on the box body (210) is provided above the inner sides of the plurality of filter plates (260).

2. A water-based paint waste solvent filtering and storage technology device according to claim 1, characterized in that: The slag discharge pipeline (270) comprises a first water flushing pipe (2710) and a first slag discharge pipe (2720) which are respectively connected and mounted on two side walls of the box body (210); the first water flushing pipe (2710) and the first slag discharge pipe (2720) are coaxially distributed and both are equipped with a first solenoid valve (2730).

3. A water-based paint waste solvent filtering and storage technology device according to claim 1, characterized in that: It also includes a plurality of flushing pipes (280) which are respectively and parallelly erected above the plurality of filter plates (260) along the inclination direction of the filter plates (260), the flushing pipes (280) comprising a second flushing pipe (2810) and a second slag discharge pipe (2820) which are respectively connected and mounted on the two side walls of the box body (210), the second flushing pipe (2810) and the second slag discharge pipe (2820) being coaxially distributed and both being equipped with a second solenoid valve (2830).

4. A water-based paint waste solvent filtering and storage technology device according to claim 1, characterized in that: The mesh sizes of the plurality of filter plates (260) decrease sequentially from top to bottom.

5. The device for filtering and storing waste solvent of water-based paint according to claim 1 is characterized in that: A plurality of clamping structures (290) for limiting the position of the filter plate (260) are provided in the box body (210), and the clamping structures (290) include two symmetrically distributed clamping seats (2910) respectively fixedly connected to two inner side walls of the box body (210), and the tops and bottoms of the two clamping seats (2910) are both provided with slopes (2920) inclined inwards.

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