Multistage filtering device for coating latex

Abstract

A coating latex multi-stage filtering device comprises a filtering barrel, a heater, a multi-stage impurity removal filtering pipe, a supporting structure, a feeding port, a discharging port and a degassing device, the feeding port and the discharging port are formed in the upper end and the lower end of the filtering barrel respectively, the heater is connected with the inner wall of the filtering barrel, and the multi-stage impurity removal filtering pipe is connected with the interior of the filtering barrel through the supporting structure. The upper end of the multi-stage impurity removal filter pipe is connected with the feed port, the lower end of the multi-stage impurity removal filter pipe is connected with the discharge port, and the degassing device is connected with the discharge port. The multi-stage impurity removal filter pipe comprises a pipeline shell, a filter screen frame, a first filter screen, a second filter screen, filter cloth, a mounting frame, an adsorption pipeline, a sealing cover and a spiral guide plate. Compared with the prior art, the multi-stage impurity removal filter pipe is designed, so that the filtering effect of the paper coating latex is improved. The detachable design facilitates cleaning and replacement of the filter cloth and the activated carbon, and the sealing performance is good. The degasser is mounted at the discharge hole, so that tiny bubbles and impurities in the latex are further removed, and the purity and the quality of the product are improved.

Description

Technical Field

[0001] This utility model relates to a filtration device, specifically a multi-stage filtration device coated with latex. Background Technology

[0002] Paper-coated latex is a latex coating applied to the surface of paper to improve its printability, surface quality, and durability. This latex typically consists of polymer emulsions, fillers, and additives, and can be applied to the paper surface using methods such as coating, blade coating, or spraying.

[0003] In the production process of paper-coated latex, the raw materials need to be thoroughly mixed and then filtered to remove impurities and particles, ensuring coating quality and uniformity. Existing paper-coated latex filters typically employ a flat-plate filter structure. The latex enters from one end of the filter, passes through the filter element, and exits from the other end. This type of filter has a simple structure, is easy to maintain and clean, but lacks sufficient sealing, has a mediocre filtration effect, and is prone to generating air bubbles and foam within the latex, affecting subsequent use.

[0004] To address the aforementioned issues, we have made a series of improvements. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage filtration device for coating latex, so as to overcome the above-mentioned shortcomings and deficiencies of the prior art.

[0006] A multi-stage filtration device for coated latex includes: a filter barrel, a heater, a multi-stage impurity removal filter tube, a support structure, a feed inlet, a discharge outlet, and a degassing device. The filter barrel has a feed inlet and a discharge outlet at its upper and lower ends, respectively. The heater is connected to the inner wall of the filter barrel. The multi-stage impurity removal filter tube is connected to the inside of the filter barrel through the support structure. The upper end of the multi-stage impurity removal filter tube is connected to the feed inlet, and the lower end of the multi-stage impurity removal filter tube is connected to the discharge outlet. The degassing device is connected to the discharge outlet.

[0007] The multi-stage impurity removal filter tube includes: a pipe shell, a filter frame, a first filter, a second filter, a filter cloth, a mounting bracket, an adsorption pipe, a sealing cap, and a spiral guide plate. The filter frame is located inside the pipe shell, and the upper part of the filter frame is connected to the mounting bracket. The upper end of the mounting bracket is fixedly connected to the inlet of the pipe shell by threads. The first filter is connected to the upper part of the filter frame, the second filter is connected to the lower part of the filter frame, the filter cloth is connected to the outer ring of the filter frame, the adsorption pipe is connected to the inner side of the filter frame, the sealing cap is connected to the upper and lower ends of the adsorption pipe, the spiral guide plate is connected to the outer surface of the adsorption pipe, activated carbon is provided inside the adsorption pipe, and there are multiple adsorption pipes. The pore size of the second filter is smaller than that of the first filter.

[0008] Furthermore, the degassing device includes: a degassing chamber, a feed pipe, a discharge pipe, a valve, and a vacuum pump. The upper end of the degassing chamber is connected to the discharge port through the feed pipe, the discharge pipe is connected to the bottom of the degassing chamber, the feed pipe and the discharge pipe are equipped with valves, and the vacuum pump is connected to the degassing chamber.

[0009] The beneficial effects of this utility model are:

[0010] Compared with traditional technologies, this invention features a multi-stage impurity removal filter tube design, which provides better sealing and improves the filtration effect of paper coated latex. The detachable design of the filter media and filter tubes facilitates cleaning of the tubes, filter screens, and replacement of filter cloths and activated carbon. Furthermore, the installation of a degasser at the outlet of the filter tubes further removes any tiny air bubbles or gaseous impurities that may remain in the latex, thereby improving the purity and quality of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the adsorption pipe of this utility model.

[0013] Figure label:

[0014] Filter cartridge 100, heater 200, multi-stage impurity removal filter tube 300, pipe shell 310, filter screen frame 320, first filter screen 330, second filter screen 340, filter cloth 350, mounting bracket 360, adsorption pipe 370, sealing cover 380 and spiral guide plate 390.

[0015] Support structure 400, feed inlet 500 and discharge outlet 600.

[0016] Degassing device 700, degassing chamber 710, feed pipe 720, discharge pipe 730, valve 740 and vacuum pump 750. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0018] Example 1

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 2 This is a schematic diagram of the adsorption pipe of this utility model.

[0020] like Figure 1 and 2As shown, a multi-stage filtration device for coated latex includes: a filter barrel 100, a heater 200, a multi-stage impurity removal filter tube 300, a support structure 400, a feed inlet 500, a discharge outlet 600, and a degassing device 700. The filter barrel 100 is provided with a feed inlet 500 and a discharge outlet 600 at its upper and lower ends, respectively. The heater 200 is connected to the inner wall of the filter barrel 100. The multi-stage impurity removal filter tube 300 is connected to the inside of the filter barrel 100 through the support structure 400. The upper end of the multi-stage impurity removal filter tube 300 is connected to the feed inlet 500, and the lower end of the multi-stage impurity removal filter tube 300 is connected to the discharge outlet 600. The degassing device 700 is connected to the discharge outlet 600.

[0021] The multi-stage impurity removal filter tube 300 includes: a pipe shell 310, a filter frame 320, a first filter screen 330, a second filter screen 340, a filter cloth 350, a mounting bracket 360, an adsorption pipe 370, a sealing cover 380, and a spiral guide plate 390. The filter frame 320 is located inside the pipe shell 310, and its upper part is connected to the mounting bracket 360. The upper end of the mounting bracket 360 is fixedly connected to the inlet of the pipe shell 310 by threads. The first filter screen 330 and the filter cloth 350 are connected to the filter cloth 360. The upper part of the frame 320 is connected, the second filter screen 340 is connected to the lower part of the filter screen frame 320, the filter cloth 350 is connected to the outer ring of the filter screen frame 320, the adsorption pipe 370 is connected to the inner side of the filter screen frame 320, the sealing cover 380 is connected to the upper and lower ends of the adsorption pipe 370, the spiral guide plate 390 is connected to the outer surface of the adsorption pipe 370, the adsorption pipe 370 is provided with activated carbon inside, there are 6 adsorption pipes 370, and the pore size of the second filter screen 340 is smaller than the pore size of the first filter screen 330.

[0022] The pore size of the first filter 330 is in the range of 100-200 micrometers, and the pore size of the second filter 340 is in the range of 20-50 micrometers. In this embodiment, the pore size of the first filter 330 is 150 micrometers, and the pore size of the second filter 340 is 30 micrometers.

[0023] The degassing device 700 includes: a degassing chamber 710, a feed pipe 720, a discharge pipe 730, a valve 740, and a vacuum pump 750. The upper end of the degassing chamber 710 is connected to the discharge port 600 through the feed pipe 720, and the discharge pipe 730 is connected to the bottom of the degassing chamber 710. The valve 740 is installed inside the feed pipe 720 and the discharge pipe 730, and the vacuum pump 750 is connected to the degassing chamber 710.

[0024] The principle of this invention is as follows: when the coated latex enters the filter tank 100 through the feed inlet 500, the entire filtration and degassing process begins. First, impurities are removed in the multi-stage impurity removal filter tube 300. Upon entering the multi-stage impurity removal filter tube 300, larger particles of impurities are intercepted due to the presence of the first filter screen 330. As the latex continues to flow, it passes through the second filter screen 340, where the pore size is smaller, further filtering out smaller particles of impurities that were not completely intercepted by the first filter screen 330. The filter cloth 350 acts as a finer filtration layer, filtering out extremely fine impurities or colloidal particles, thus ensuring the purity of the latex. Simultaneously, the adsorption pipe 370 plays a crucial role. The activated carbon filled inside adsorbs organic impurities and odor substances in the latex. The spiral guide plate 390 ensures that the latex flows more evenly around the adsorption pipe 370, guaranteeing sufficient contact time and contact area between the latex and the activated carbon, thereby improving adsorption efficiency.

[0025] During the filtration process, heater 200 continuously heats the latex inside filter cartridge 100. Heating reduces the viscosity of the latex, improves its flowability, and allows it to flow more smoothly through the multi-stage impurity removal filter tube 300, thus increasing filtration speed and efficiency. It also helps to more easily separate some impurities from the latex and promotes the movement of some dissolved gases to the surface, preparing for subsequent degassing processes.

[0026] The latex, after being filtered through the multi-stage impurity removal filter tube 300, flows from its lower end to the outlet 600, and then enters the degassing device 700. The degassing chamber 710 in the degassing device 700 is connected to the outlet 600 via the feed pipe 720. When the latex enters the degassing chamber 710, the vacuum pump 750 starts operating. The vacuum pump 750 extracts the air from the degassing chamber 710, reducing the air pressure inside. Gas begins to escape from the latex. The escaped gas is extracted from the degassing chamber 710 by the vacuum pump 750, and the degassed latex flows out through the outlet pipe 730.

[0027] Compared with traditional technologies, this invention features a multi-stage impurity removal filter tube design, which provides better sealing and improves the filtration effect of paper coated latex. The detachable design of the filter media and filter tubes facilitates cleaning of the tubes, filter screens, and replacement of filter cloths and activated carbon. Furthermore, the installation of a degasser at the outlet of the filter tubes further removes any tiny air bubbles or gaseous impurities that may remain in the latex, thereby improving the purity and quality of the product.

[0028] The specific embodiments of this utility model have been described above, but this utility model is not limited thereto. Various changes can be made to this utility model as long as they do not depart from its spirit.

Claims

1. A multi-stage filtration device coated with latex, characterized in that, include: The filter barrel (100), heater (200), multi-stage impurity removal filter tube (300), support structure (400), feed inlet (500), discharge outlet (600), and degassing device (700) are provided. The upper and lower ends of the filter barrel (100) are respectively provided with feed inlet (500) and discharge outlet (600). The heater (200) is connected to the inner wall of the filter barrel (100). The multi-stage impurity removal filter tube (300) is connected to the inside of the filter barrel (100) through the support structure (400). The upper end of the multi-stage impurity removal filter tube (300) is connected to the feed inlet (500). The lower end of the multi-stage impurity removal filter tube (300) is connected to the discharge outlet (600). The degassing device (700) is connected to the discharge outlet (600). The multi-stage impurity removal filter tube (300) includes: a pipe shell (310), a filter frame (320), a first filter screen (330), a second filter screen (340), a filter cloth (350), a mounting bracket (360), an adsorption pipe (370), a sealing cap (380), and a spiral guide plate (390). The filter frame (320) is located inside the pipe shell (310), and the upper part of the filter frame (320) is connected to the mounting bracket (360). The upper end of the mounting bracket (360) is fixedly connected to the inlet of the pipe shell (310) by threads. The first filter screen (330) and the filter frame... The upper part of the frame (320) is connected, the second filter screen (340) is connected to the lower part of the filter screen frame (320), the filter cloth (350) is connected to the outer ring of the filter screen frame (320), the adsorption pipe (370) is connected to the inner side of the filter screen frame (320), the sealing cover (380) is connected to the upper and lower ends of the adsorption pipe (370), the spiral guide plate (390) is connected to the outer surface of the adsorption pipe (370), the adsorption pipe (370) is provided with activated carbon inside, there are multiple adsorption pipes (370), and the pore size of the second filter screen (340) is smaller than the pore size of the first filter screen (330).

2. The latex-coated multi-stage filtration device according to claim 1, characterized in that: The degassing device (700) includes: a degassing chamber (710), a feed pipe (720), a discharge pipe (730), a valve (740), and a vacuum pump (750). The upper end of the degassing chamber (710) is connected to the discharge port (600) through the feed pipe (720), and the discharge pipe (730) is connected to the bottom of the degassing chamber (710). The feed pipe (720) and the discharge pipe (730) are equipped with valves (740), and the vacuum pump (750) is connected to the degassing chamber (710).

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