Waterborne polyurethane resin filtering device

Abstract

The utility model discloses a waterborne polyurethane resin filtering device, which belongs to the field of waterborne polyurethane resin production and comprises a filtering box, a box cover is clamped at the upper end of the filtering box, a sewage discharging pipe is arranged through an upper filtering sieve, a bent pipe and a sewage discharging pipe are arranged on the lower filtering sieve, and the sewage discharging pipe is connected with the inside of a sewage collecting box. Dirt at the upper end of the upper filter sieve can be conveniently discharged through the lower dirt pipe, dirt at the upper end of the lower filter sieve can be conveniently discharged through the bent pipe, then the dirt is discharged into the dirt collecting box through the dirt discharging pipe, and the dirt is discharged by opening the dirt discharging pipe, so that the dirt collecting, dirt removing and dirt discharging effects are achieved, and the defects caused by dirt accumulation at the upper ends of the upper filter sieve and the lower filter sieve are avoided; meanwhile, the feeding hopper is supported through the support, the lower end of the feeding hopper is provided with the multiple dispersing pipes, the waterborne polyurethane resin can be discharged and conveyed to the upper end of the interior of the filtering box through the dispersing pipes when being put into the feeding hopper, then the waterborne polyurethane resin is dispersed to the upper end of the upper filtering sieve, the filtering area is enlarged, and the filtering effect and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of waterborne polyurethane resin production, and more specifically to a waterborne polyurethane resin filtering device. Background Art

[0002] Waterborne polyurethane resin refers to polyurethane that uses water as a dispersion medium. In the 1990s, with the strengthening of people's environmental awareness and environmental protection laws and regulations, the research and development of environmentally friendly waterborne polyurethane has received increasing attention. Its application has been continuously expanded from leather finishing agents to coatings, adhesives and other fields, and is gradually occupying the market of solvent-based polyurethane, representing the development direction of coatings and adhesives. Surprisingly, among waterborne resins, waterborne polyurethane is still a representative of excellent resins and is one of the hot spots in modern waterborne resin research.

[0003] For example, a filter for the production of waterborne polyurethane resin disclosed in announcement number CN215387884U includes a placement seat, a filter cartridge is provided on one side of the placement seat, a filter screen is provided at the bottom of the filter cartridge, a scraping device is provided on the other side of the placement seat, an inverted L-shaped plate is provided on one side of the placement seat where the filter cartridge and the scraping device are not provided, the upper end of the L-shaped plate faces the center of the placement seat, a movable plate 1 is provided below the upper end of the L-shaped plate through a sliding rail 1, an electric push rod is provided below the movable plate 1, a pressing plate matching the filter cartridge is provided at the lower end of the electric push rod, a silica gel layer is provided on the lower side wall of the pressing plate, the electric push rod is coaxial with the filter cartridge, a driving mechanism 1 for driving the movable plate 1 is provided below the upper end of the L-shaped plate, a material receiving bucket is provided at the bottom of the placement seat, and a discharge pipe is provided below the filter cartridge. Compared with the prior art, the utility model has the advantages of reasonable structure, improved filtering efficiency, and convenient cleaning of impurities.

[0004] It can be seen from the above-mentioned public scheme that after the current filter has filtered the water-based polyurethane resin, the filtered dirt is not easy to be discharged in time, and the dirt accumulates on the filter net, which not only easily blocks the filter mesh, but also affects the continued filtering of the water-based polyurethane resin. At the same time, when the water-based polyurethane resin is discharged into the filter net, it is mostly discharged into the filter net in a concentrated manner, and most of it is discharged into the same position. Long-term use can easily cause the filter net to be damaged by impact, and the concentrated discharge of the water-based polyurethane resin is not easy to filter the water-based polyurethane resin. Utility Model Content

[0005] The utility model aims to provide an aqueous polyurethane resin filtering device to solve the problems of dirt discharge and filter protection.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a water-based polyurethane resin filtering device, comprising a filter box, the upper end of the filter box is clamped with a box cover, the upper end of the interior of the filter box is fixedly provided with an upper filter screen, the upper end of the interior of the filter box is fixedly provided with a lower filter screen, the lower end of the filter box is fixedly provided with a lower sewage pipe on the right side of the lower end of the upper filter screen, a bent pipe is fixedly provided on the right side of the lower end of the lower filter screen, a sewage pipe is fixedly provided on the right lower end of the bent pipe, a sewage collecting box is fixedly provided on the right lower end of the filter box, a rotating shaft is rotatably provided inside the filter box, a plurality of cleaning brushes are fixedly provided on the left side of the upper end of the rotating shaft, a motor is fixedly provided on the upper end of the box cover, a bracket is fixedly provided on the upper end of the box cover, a feed hopper is fixedly provided on the upper end of the bracket, and a plurality of dispersion pipes are fixedly provided on the lower end of the feed hopper, A lower sewage pipe is arranged through the upper filter screen, and a bent pipe and a sewage pipe are arranged on the lower filter screen. The sewage pipe is connected to the interior of the sewage collecting box, so that the dirt on the upper end of the upper filter screen is discharged through the lower sewage pipe. The bent pipe discharges the dirt on the upper end of the lower filter screen, and then discharges it into the interior of the sewage collecting box through the sewage pipe. The sewage is discharged by opening the sewage removal pipe, thereby achieving the effect of collecting, removing and discharging sewage, and avoiding the disadvantages caused by the accumulation of dirt on the upper ends of the upper filter screen and the lower filter screen. At the same time, the feed hopper is supported by a bracket, and a plurality of dispersion pipes are arranged at the lower end of the feed hopper. When the water-based polyurethane resin is put into the interior of the feed hopper, it will be discharged and transported to the upper end of the interior of the filter box through each dispersion pipe, and then dispersed to the upper end of the upper filter screen, thereby increasing the filtering area, increasing the filtering effect and efficiency, reducing the impact damage to the upper filter screen caused by the falling of the water-based polyurethane resin, and strengthening the protection of the upper filter screen.

[0007] Preferably, the upper filter screen is arranged at the upper end of the lower filter screen, and the sewage pipe is fixed through the upper right end of the filter box, and is separated from the filter box and the box cover, so that it is convenient to open the filter box after removing the box cover. Through the arrangement of the upper filter screen and the lower filter screen, a double-layer filtration effect is achieved, and the mesh size of the upper filter screen is larger than the mesh size of the lower filter screen.

[0008] Preferably, a dirt removal pipe is fixedly provided at the lower right end of the dirt collecting box, and the lower right end of the dirt discharge pipe is arranged inside the dirt collecting box. The arrangement of the bent pipe not only plays a role in dirt discharge, but also facilitates filtering of the water-based polyurethane resin, thereby preventing the water-based polyurethane resin from moving to the inside of the bent pipe and then flowing out, and can be filtered through the bent pipe.

[0009] Preferably, the rotating shaft rotates through the interior of the upper filter screen and the lower filter screen, and the cleaning brush rotates tightly against the mesh holes of the upper filter screen and the lower filter screen. The provision of the cleaning brush facilitates cleaning and removing dirt stuck inside the mesh holes of the upper filter screen and the lower filter screen.

[0010] Preferably, the motor shaft of the motor is fixedly provided with a clamping sleeve, and the upper end of the rotating shaft is fixedly provided with a square block. The clamping sleeve is slidably plugged into the square block. Through the setting of the motor, the cleaning brush can be driven to rotate automatically by rotating the motor shaft, thereby achieving the effect of automatic cleaning and decontamination.

[0011] Preferably, a drain pipe is fixedly provided at the lower left end of the filter box, and a filter cover is fixedly provided at the lower left end of the filter box, which is conveniently connected to and disconnected from the motor shaft and the rotating shaft through the sliding engagement of the sleeve and the square block.

[0012] Preferably, a sewage discharge nozzle is fixedly provided at the lower left end of the filter box, the lower end of the dispersion pipe is fixedly passed through the interior of the box cover, and the lower end of the dispersion pipe is arranged at the inner upper end of the filter box. The filter cover is arranged to prevent the discharged water-based polyurethane resin from containing dirt. The sewage discharge nozzle is arranged to facilitate the discharge of precipitated dirt. A certain gap is arranged between the drain pipe and the bottom of the filter box to prevent the discharge of precipitated dirt when discharging the water-based polyurethane resin.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The utility model sets a lower sewage pipe through the upper filter screen, sets a bent pipe and a sewage pipe on the lower filter screen, and the sewage pipe is connected to the interior of the sewage collecting box, so that it is convenient to discharge the dirt on the upper end of the upper filter screen through the lower sewage pipe. The bent pipe discharges the dirt on the upper end of the lower filter screen, and then discharges it into the interior of the sewage collecting box through the sewage pipe. The sewage is discharged by opening the sewage removal pipe, thereby achieving the effect of collecting, removing and discharging sewage, and avoiding the disadvantages caused by the accumulation of dirt on the upper ends of the upper filter screen and the lower filter screen.

[0015] (2) The utility model supports the feed hopper by a bracket, and a plurality of dispersion pipes are arranged at the lower end of the feed hopper. When the water-based polyurethane resin is put into the interior of the feed hopper, it is discharged through each dispersion pipe and transported to the inner upper end of the filter box, and then dispersed to the upper end of the upper filter screen, thereby increasing the filtration area, increasing the filtration effect and efficiency, reducing the impact damage to the upper filter screen caused by the water-based polyurethane resin when it falls, and strengthening the protection of the upper filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial cross-sectional view of the overall structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the local structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 4 It is a top view of the connection between the feed hopper and the dispersion pipe of the utility model;

[0020] Figure 5 It is a top view of the connection between the filter box and the upper filter screen of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1 filter box, 2 box cover, 3 upper filter screen, 4 lower filter screen, 5 lower sewage pipe, 6 elbow pipe, 7 sewage pipe, 8 sewage collecting box, 9 sewage removal pipe, 10 rotating shaft, 11 cleaning brush, 12 motor, 13 motor shaft, 14 ferrule, 15 square block, 16 drainage pipe, 17 filter cover, 18 sewage nozzle, 19 bracket, 20 feed hopper, 21 dispersion pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below 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 of 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.

[0024] Example 1

[0025] See also Figure 1-5 , a water-based polyurethane resin filtering device shown in the figure comprises a filter box 1, a box cover 2 is clamped on the upper end of the filter box 1, an upper filter screen 3 is fixedly arranged on the upper end of the interior of the filter box 1, a lower filter screen 4 is fixedly arranged on the upper end of the interior of the filter box 1, a lower sewage pipe 5 is fixedly arranged on the right side of the lower end of the upper filter screen 3, a bent pipe 6 is fixedly arranged on the right side of the lower end of the lower filter screen 4, a sewage pipe 7 is fixedly arranged on the lower right end of the bent pipe 6, a sewage collecting box 8 is fixedly arranged on the lower right end of the filter box 1, a rotating shaft 10 is rotatably arranged inside the filter box 1, a plurality of cleaning brushes 11 are fixedly arranged on the left side of the upper end of the rotating shaft 10, a motor 12 is fixedly arranged on the upper end of the box cover 2, the model of the motor 12 is YE2, and the plug of the motor 12 is plugged into an external power supply, which belongs to the prior art, a bracket 19 is fixedly arranged on the upper end of the box cover 2, a feed hopper 20 is fixedly arranged on the upper end of the bracket 19, and a plurality of dispersion pipes 21 are fixedly arranged on the lower end of the feed hopper 20.

[0026] In order to facilitate the filtering of water-based polyurethane resin, the rotating shaft 10 rotates and passes through the interior of the upper filter screen 3 and the lower filter screen 4, the cleaning brush 11 rotates and is tightly attached to the mesh of the upper filter screen 3 and the lower filter screen 4, the motor shaft 13 of the motor 12 is fixedly provided with a sleeve 14, the upper end of the rotating shaft 10 is fixedly provided with a square block 15, the sleeve 14 and the square block 15 are slidably plugged, the lower end of the left side of the filter box 1 is fixedly provided with a drain pipe 16, the lower end of the left side of the filter box 1 is fixedly provided with a filter cover 17, the lower end of the left side of the filter box 1 is fixedly provided with a sewage discharge nozzle 18, the lower end of the dispersion pipe 21 is fixedly provided through the interior of the box cover 2, and the lower end of the dispersion pipe 21 is arranged at the upper end of the interior of the filter box 1.

[0027] In this embodiment, a lower sewage pipe 5 is set through the upper filter screen 3, and a bent pipe 6 and a sewage pipe 7 are set on the lower filter screen 4. The sewage pipe 7 is connected to the interior of the sewage collecting box 8, so that the dirt on the upper end of the upper filter screen 3 is discharged through the lower sewage pipe 5, and the bent pipe 6 discharges the dirt on the upper end of the lower filter screen 4, and then discharges it into the interior of the sewage collecting box 8 through the sewage pipe 7, and discharges it by opening the sewage removal pipe 9, thereby achieving the effect of collecting, removing and discharging sewage, avoiding the disadvantages caused by the accumulation of dirt on the upper ends of the upper filter screen 3 and the lower filter screen 4. At the same time, the feed hopper 20 is supported by the bracket 19, and a plurality of dispersion pipes 21 are set at the lower end of the feed hopper 20. When the water-based polyurethane resin is put into the interior of the feed hopper 20, it will be discharged and transported to the upper end of the interior of the filter box 1 through each dispersion pipe 21, and then dispersed to the upper end of the upper filter screen 2, thereby increasing the filtering area, increasing the filtering effect and efficiency, reducing the impact damage to the upper filter screen 2 caused by the water-based polyurethane resin when falling, and strengthening the protection of the upper filter screen 2.

[0028] The water-based polyurethane resin is put into the interior of the feed hopper 20, and then dispersed through each dispersion pipe 21 and transported to the upper end of the upper filter screen 3, and then filtered and screened through the upper filter screen 3, and then the filtered water-based polyurethane resin falls to the upper end of the lower filter screen 4, and then filtered and screened through the lower filter screen 4, and then falls to the lower end of the interior of the filter box 1 for sedimentation. At the same time, the filtered dirt passes through the lower sewage pipe 5 and the curved pipe 6, and is finally discharged and collected into the interior of the sewage collecting box 8 through the sewage pipe 7, thereby achieving the effect of filtering and collecting dirt. By starting the motor 12, the motor 12 works, the motor shaft 13 rotates, and then the rotating shaft 10 drives the cleaning brush 11 to rotate, and then the cleaning brush 11 rotates and is close to the upper filter screen 3 and the lower filter screen, and the cleaning brush 11 rotates to clean and remove dirt from the upper filter screen 3 and the lower filter screen 4.

[0029] 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 waterborne polyurethane resin filtering device, comprising a filter box (1), characterized in that: The upper end of the filter box (1) is clamped with a box cover (2), an upper filter screen (3) is fixedly arranged at the upper end of the interior of the filter box (1), a lower filter screen (4) is fixedly arranged at the upper end of the interior of the filter box (1), a lower sewage pipe (5) is fixedly arranged on the right side of the lower end of the upper filter screen (3), a bent pipe (6) is fixedly arranged on the right side of the lower end of the lower filter screen (4), a sewage pipe (7) is fixedly arranged on the lower right end of the bent pipe (6), and the lower right end of the filter box (1) is fixedly arranged on the lower right end of the lower filter screen (4). A dirt collecting box (8) is fixedly arranged at the end, a rotating shaft (10) is rotatably arranged inside the filter box (1), a plurality of cleaning brushes (11) are fixedly arranged on the left side of the upper end of the rotating shaft (10), a motor (12) is fixedly arranged at the upper end of the box cover (2), a bracket (19) is fixedly arranged at the upper end of the box cover (2), a feed hopper (20) is fixedly arranged at the upper end of the bracket (19), and a plurality of dispersion pipes (21) are fixedly arranged at the lower end of the feed hopper (20).

2. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: The upper filter screen (3) is arranged at the upper end of the lower filter screen (4), and the sewage discharge pipe (7) is fixedly passed through the upper right end of the filter box (1).

3. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: A dirt removal pipe (9) is fixedly arranged at the lower right end of the dirt collecting box (8), and the lower right end of the dirt discharge pipe (7) is arranged inside the dirt collecting box (8).

4. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: The rotating shaft (10) rotates and passes through the interior of the upper filter screen (3) and the lower filter screen (4), and the cleaning brush (11) rotates and is closely attached to the meshes of the upper filter screen (3) and the lower filter screen (4).

5. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: A clamping sleeve (14) is fixedly provided on the motor shaft (13) of the motor (12), a square block (15) is fixedly provided on the upper end of the rotating shaft (10), and the clamping sleeve (14) is slidably plugged into the square block (15).

6. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: A liquid discharge pipe (16) is fixedly provided at the lower left end of the filter box (1), and a filter cover (17) is fixedly provided at the lower left end of the filter box (1).

7. The aqueous polyurethane resin filtering device according to claim 1, characterized in that: A sewage discharge nozzle (18) is fixedly provided at the lower left end of the filter box (1), the lower end of the dispersion pipe (21) is fixedly passed through the interior of the box cover (2), and the lower end of the dispersion pipe (21) is arranged at the upper end of the interior of the filter box (1).

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