Filtering device for producing polyurethane coating

Abstract

The utility model relates to the technical field of polyurethane coating production, in particular to a filtering device for producing polyurethane coating, which comprises a tank body, a mounting frame is fixedly mounted on the inner wall of the tank body, a motor is fixedly mounted on the top surface of the mounting frame, a rotating rod is fixedly mounted at the output end of the motor, and a drum screen is fixedly mounted at the bottom end of the rotating rod. A sliding frame is slidably mounted on the inner wall of the tank body, and a scraping ring is fixedly mounted on the outer wall of the sliding frame. Through the arrangement of a rotating rod, a drum screen, a scraping ring and a clamping block, the effect of rapidly filtering polyurethane coating through the drum screen is achieved, the polyurethane coating can pass through the drum screen more rapidly through the action of centrifugal force, the polyurethane coating on the surface of the drum screen can be continuously scraped off through cooperation of the scraping ring and the drum screen, and the phenomenon that after long-time use, the polyurethane coating cannot be scraped off is avoided. And the polyurethane coating blocks the drum screen to influence the filtering effect, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane coating production, in particular to a filtering device used for producing polyurethane coating. Background Art

[0002] Polyurethane coating is polyurethane coating. It has strong film, rich gloss, strong adhesion, water resistance, wear resistance and corrosion resistance. It is widely used in high-grade wooden furniture and can also be used on metal surfaces. In the process of producing polyurethane coating, filtering equipment is needed for filtering.

[0003] The utility model with patent announcement number CN220404943U discloses a filtering device for producing polyurethane coatings, including a filter box, the right side of which is connected to a water tank by bolts, a flushing assembly is installed on the surface of the water tank, and an anti-blocking assembly is installed in the inner cavity of the filter box, the anti-blocking assembly includes a spring, and a filter screen is welded on the top of the spring. The utility model is coordinated by a motor, a threaded rod, a belt pulley, a belt, a moving plate and a feeding net basket, and has the advantage of being able to evenly filter the polyurethane coating. When filtering the polyurethane coating, the polyurethane coating will not pile up together, so that the polyurethane coating is filtered more evenly, and the filtering effect is improved; the cylinder, the connecting plate, the short plate, the spring and the pressure plate are coordinated, and the anti-blocking function is provided, so that the filter screen will not be blocked, and the polyurethane coating can be better filtered, and the filtering speed is improved.

[0004] However, the current filtering device for producing polyurethane coatings has the following problems: during the filtration process, the polyurethane coating is filtered by its own gravity. Since the polyurethane coating has a high viscosity and a slow flow rate, the filtration time is long, which affects the work efficiency. In view of this, we propose a filtering device for producing polyurethane coatings. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a filtering device for producing polyurethane coatings, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical solutions: a filtering device for producing polyurethane coatings, comprising a tank body, a mounting frame fixedly mounted on the inner wall of the tank body, a motor fixedly mounted on the top surface of the mounting frame, a rotating rod fixedly mounted on the output end of the motor, a drum screen fixedly mounted on the bottom end of the rotating rod, a sliding frame slidably mounted on the inner wall of the tank body, and a scraper ring fixedly mounted on the outer wall of the sliding frame.

[0006] Preferably, an annular oblique groove is provided on the outer wall of the rotating rod, and a clamping block is fixedly mounted on the inner wall of the sliding frame.

[0007] Preferably, the inner wall of the sliding frame is slidably connected to the outer wall of the rotating rod, and the outer wall of the clamping block is slidably connected to the annular inclined groove of the rotating rod.

[0008] Preferably, the inner wall of the scraper ring is slidably connected to the outer wall of the drum screen, and a plurality of fine holes are provided on the surface of the drum screen.

[0009] Preferably, a pre-filter device is provided inside the tank body, and the pre-filter device includes a filter box, an upper grille, a lower grille, and a guide tube. The filter box is fixedly mounted on the outer wall of the mounting frame, the upper grille is slidably mounted on the inner wall of the filter box through two round rods, the lower grille is fixedly mounted on the inner wall of the filter box, and the guide tube is fixedly mounted on the bottom of the filter box.

[0010] Preferably, the upper grille is located above the lower grille, the upper grille is slidably connected to the lower grille, the guide tube is located above the drum screen, a plurality of through holes are provided on the surfaces of the upper grille and the lower grille, and the apertures of the plurality of through holes are larger than the pores on the surface of the drum screen.

[0011] Preferably, the pre-filter device also includes a spring telescopic rod, a ramp block, and a resistance rod, wherein the spring telescopic rod is fixedly mounted on the inner wall of the filter box, the ramp block is fixedly mounted on one end of the spring telescopic rod close to the drum screen, and the resistance rod is fixedly mounted on the outer wall of the sliding frame.

[0012] Preferably, one end of the spring telescopic rod away from the inclined plane block is fixedly connected to the upper grille, and the inclined plane block is located on the movement track of the interference rod.

[0013] It can be seen from the above technical solutions that the filtering device for producing polyurethane coatings provided in the embodiments of this specification has at least the following beneficial effects:

[0014] (1) The utility model realizes the effect of rapid filtration of polyurethane coating by the drum screen through the arrangement of the tank body, the mounting frame, the motor, the rotating rod, the drum screen, the sliding frame, the scraper ring and the clamping block. The polyurethane coating can pass through the drum screen more quickly through the action of centrifugal force, and the cooperation of the scraper ring and the drum screen can continuously scrape off the polyurethane coating on the surface of the drum screen, which can prevent the polyurethane coating from clogging the drum screen after long-term use and affecting the filtration effect, thereby accelerating the filtration process and improving work efficiency.

[0015] (2) The utility model can make the polyurethane coating in the filter box quickly pass through the through holes of the upper grille and the lower grille by arranging the pre-filter device, the filter box, the upper grille, the lower grille, the guide tube, the spring telescopic rod, the inclined block and the resistance rod. Since the aperture of the through holes is larger than the pores of the drum screen, the upper grille can filter out foreign matter with larger particle sizes, prevent foreign matter with larger particle sizes from entering the drum screen, and avoid that the foreign matter inside the drum screen will continuously hit the inner wall of the drum screen when the drum screen rotates, causing damage to the device, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure inside the tank body of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the transfer rod of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pre-filter device in the utility model;

[0021] Figure 5 For the utility model Figure 4 An enlarged schematic diagram of point A.

[0022] In the figure: 1, tank body; 2, mounting frame; 3, motor; 4, pre-filter device; 41, filter box; 42, upper grille; 43, lower grille; 44, guide tube; 45, spring telescopic rod; 46, inclined block; 47, resistance rod; 5, rotating rod; 6, drum screen; 7, sliding frame; 8, scraper ring; 9, clamping block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0024] See also Figure 1-Figure 3As shown, a filtering device for producing polyurethane coating comprises a tank body 1, a mounting frame 2 is fixedly mounted on the inner wall of the tank body 1, a motor 3 is fixedly mounted on the top surface of the mounting frame 2, a rotating rod 5 is fixedly mounted on the output end of the motor 3, a drum screen 6 is fixedly mounted on the bottom end of the rotating rod 5, an annular inclined groove is provided on the outer wall of the rotating rod 5, and a plurality of fine holes are provided on the surface of the drum screen 6. After the polyurethane coating enters the drum screen 6, the rotation of the drum screen 6 causes the polyurethane coating to pass through the fine holes of the drum screen 6 by centrifugal force, thereby completing the filtration, a sliding frame 7 is slidably mounted on the inner wall of the tank body 1, and a scraper ring 8 is fixedly mounted on the outer wall of the sliding frame 7. The inner wall of the scraper ring 8 is slidably connected to the outer wall of the drum screen 6, the inner wall of the sliding frame 7 is slidably connected to the outer wall of the rotating rod 5, the outer wall of the sliding frame 7 is fixedly installed with a clamping block 9, the outer wall of the clamping block 9 is slidably connected to the annular inclined groove of the rotating rod 5, when the rotating rod 5 rotates, the rotating rod 5 will drive the sliding frame 7 to perform vertical reciprocating motion, and the sliding frame 7 drives the scraper ring 8 to perform vertical reciprocating motion, so that the scraper ring 8 can continuously scrape off the polyurethane coating attached to the surface of the drum screen 6 to prevent the drum screen 6 from being blocked.

[0025] In this embodiment, the polyurethane coating enters the rotating drum screen 6 through the provided drum screen 6 and the scraper ring 8. The centrifugal force allows the polyurethane coating to pass through the drum screen 6 more quickly. In addition, the cooperation of the scraper ring 8 and the drum screen 6 can continuously scrape off the polyurethane coating on the surface of the drum screen 6. This can prevent the polyurethane coating from clogging the drum screen 6 and affecting the filtering effect after long-term use, thereby speeding up the filtering process and improving work efficiency. Example 2

[0026] See also Figure 4-Figure 5As shown, on the basis of Embodiment 1, the utility model provides a technical solution: preferably, a pre-filter device 4 is provided inside the tank body 1, and the pre-filter device 4 includes a filter box 41, an upper grille 42, a lower grille 43, and a guide tube 44. The filter box 41 is fixedly mounted on the outer wall of the mounting frame 2, the upper grille 42 is slidably mounted on the inner wall of the filter box 41 through two round rods, the lower grille 43 is fixedly mounted on the inner wall of the filter box 41, the guide tube 44 is fixedly mounted on the bottom of the filter box 41, the upper grille 42 is located above the lower grille 43, the upper grille 42 is slidably connected to the lower grille 43, the guide tube 44 is located above the drum screen 6, and a plurality of through holes are provided on the surfaces of the upper grille 42 and the lower grille 43, and the apertures of the plurality of through holes are larger than the pores on the surface of the drum screen 6. The upper grille 42 cooperates with the lower grille 43 to filter out foreign matter with larger particle sizes and prevent foreign matter from entering the drum screen 6 and damaging the drum screen 6. The pre-filter device 4 also includes a spring telescopic rod 45, a ramp block 46, and a resistance rod 47. The spring telescopic rod 45 is fixedly mounted on the inner wall of the filter box 41, the ramp block 46 is fixedly mounted on the end of the spring telescopic rod 45 close to the drum screen 6, and the resistance rod 47 is fixedly mounted on the outer wall of the sliding frame 7. The end of the spring telescopic rod 45 away from the ramp block 46 is fixedly connected to the upper grille 42, and the ramp block 46 is located on the movement trajectory of the resistance rod 47. Through the cooperation of the resistance rod 47 and the ramp block 46, the spring telescopic rod 45 continuously drives the upper grille 42 to move, thereby accelerating the falling process of the polyurethane coating and avoiding the accumulation of polyurethane coating inside the filter box 41.

[0027] In this embodiment, by setting the upper grille 42 and the lower grille 43, through the cooperation of the upper grille 42 and the lower grille 43 in reciprocating motion, the polyurethane coating in the filter box 41 can quickly pass through the through holes of the upper grille 42 and the lower grille 43. Since the aperture of the through holes is larger than the pores of the drum screen 6, the upper grille 42 can filter out foreign matter with larger particle sizes, preventing foreign matter with larger particle sizes from entering the interior of the drum screen 6, and preventing the internal foreign matter from constantly hitting the inner wall of the drum screen 6 when the drum screen 6 rotates, causing damage to the device, thereby extending the service life of the device.

[0028] Working principle: pour the polyurethane coating into the filter box 41, the polyurethane coating in the filter box 41 flows into the drum screen 6 through the guide tube 44, start the motor 3, the motor 3 drives the rotating rod 5 to rotate, the rotating rod 5 drives the drum screen 6 to rotate, the drum screen 6 rotates so that the polyurethane coating inside it passes through the fine holes on the surface of the drum screen 6 with the help of centrifugal force, and the polyurethane coating passing through the fine holes falls into the tank body 1, and then is transported to the next process, and the impurities that cannot pass through the fine holes are temporarily retained in the drum screen 6. When the rotating rod 5 rotates, the annular inclined groove on the surface of the rotating rod 5 and the block 9 cooperate to enable the rotating rod 5 to carry the impurities while rotating. The movable sliding frame 7 performs vertical reciprocating motion, and the sliding frame 7 drives the scraper ring 8 to perform vertical reciprocating motion. The scraper ring 8 continuously scrapes off the polyurethane coating attached to the outer wall of the drum screen 6 during the vertical reciprocating motion, thereby achieving the effect of the drum screen 6 to quickly filter the polyurethane coating. Through the action of centrifugal force, the polyurethane coating can pass through the drum screen 6 more quickly, and through the cooperation of the scraper ring 8 and the drum screen 6, the polyurethane coating on the surface of the drum screen 6 can be continuously scraped off, which can avoid the polyurethane coating clogging the drum screen 6 after long-term use and affecting the filtering effect, thereby accelerating the filtering process and improving work efficiency.

[0029] The polyurethane coating that enters the filter box 41 will first contact the upper grille 42. When the sliding frame 7 is performing vertical reciprocating motion, the sliding frame 7 drives the abutment rod 47 to perform vertical reciprocating motion. The abutment rod 47 will repeatedly contact the inclined surface block 46 during the vertical reciprocating motion. When the abutment rod 47 contacts the inclined surface block 46, the abutment rod 47 will push the inclined surface block 46 away from the drum screen 6. The inclined surface block 46 drives the spring telescopic rod 45 to move away from the drum screen 6. When the abutment rod 47 does not contact the inclined surface block 46, the spring telescopic rod 45 drives the inclined surface block 46 to reset due to its own elastic force, so that the spring telescopic rod 45 continuously performs horizontal reciprocating motion, and the spring telescopic rod 45 drives the upper grille 42 to perform horizontal reciprocating motion while performing horizontal reciprocating motion. Through the cooperation of the upper grille 42 and the lower grille 43 in the reciprocating motion, the polyurethane coating in the filter box 41 can quickly pass through the through holes of the upper grille 42 and the lower grille 43. Since the aperture of the through hole is larger than the pores of the drum screen 6, the upper grille 42 can filter out foreign matter with larger particle sizes, prevent foreign matter with larger particle sizes from entering the drum screen 6, and avoid that the internal foreign matter will continuously hit the inner wall of the drum screen 6 when the drum screen 6 rotates, causing damage to the device, thereby extending the service life of the device.

[0030] The above implementation methods are only used to illustrate the embodiments of the present utility model, and are not limitations of the embodiments of the present utility model. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present utility model. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present utility model. The patent protection scope of the embodiments of the present utility model should be limited by the claims.

Claims

1. A filtering device for producing polyurethane coatings, comprising a tank body (1), a mounting frame (2) fixedly mounted on the inner wall of the tank body (1), a motor (3) fixedly mounted on the top surface of the mounting frame (2), a rotating rod (5) fixedly mounted on the output end of the motor (3), a drum screen (6) fixedly mounted on the bottom end of the rotating rod (5), a sliding frame (7) slidably mounted on the inner wall of the tank body (1), and a scraper ring (8) fixedly mounted on the outer wall of the sliding frame (7).

2. A filtering device for producing polyurethane coatings according to claim 1, characterized in that: An annular oblique groove is provided on the outer wall of the rotating rod (5), and a clamping block (9) is fixedly mounted on the inner wall of the sliding frame (7).

3. A filtering device for producing polyurethane coating according to claim 2, characterized in that: The inner wall of the sliding frame (7) is slidably connected to the outer wall of the rotating rod (5), and the outer wall of the clamping block (9) is slidably connected to the annular inclined groove of the rotating rod (5).

4. A filtering device for producing polyurethane coating according to claim 3, characterized in that: The inner wall of the scraper ring (8) is slidably connected to the outer wall of the drum screen (6), and a plurality of fine holes are formed on the surface of the drum screen (6).

5. A filtering device for producing polyurethane coatings according to claim 4, characterized in that: A pre-filter device (4) is arranged inside the tank body (1), and the pre-filter device (4) comprises a filter box (41), an upper grille (42), a lower grille (43), and a guide tube (44); the filter box (41) is fixedly mounted on the outer wall of the mounting frame (2); the upper grille (42) is slidably mounted on the inner wall of the filter box (41) via two round rods; the lower grille (43) is fixedly mounted on the inner wall of the filter box (41); and the guide tube (44) is fixedly mounted on the bottom of the filter box (41).

6. A filtering device for producing polyurethane coating according to claim 5, characterized in that: The upper grille (42) is located above the lower grille (43), the upper grille (42) and the lower grille (43) are slidably connected, the guide tube (44) is located above the drum screen (6), and a plurality of through holes are provided on the surfaces of the upper grille (42) and the lower grille (43), and the apertures of the plurality of through holes are larger than the pores on the surface of the drum screen (6).

7. A filtering device for producing polyurethane coating according to claim 6, characterized in that: The pre-filter device (4) further comprises a spring telescopic rod (45), a sloped block (46), and a resisting rod (47); the spring telescopic rod (45) is fixedly mounted on the inner wall of the filter box (41); the sloped block (46) is fixedly mounted on one end of the spring telescopic rod (45) close to the drum screen (6); and the resisting rod (47) is fixedly mounted on the outer wall of the sliding frame (7).

8. A filtering device for producing polyurethane coating according to claim 7, characterized in that: One end of the spring telescopic rod (45) away from the inclined surface block (46) is fixedly connected to the upper grille (42), and the inclined surface block (46) is located on the movement track of the abutment rod (47).

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