TWI735381B - Filter - Google Patents

Abstract

A filter screen, which is used for the final filtration of raw materials and impurities. It is mainly equipped with a metal mesh, or a metal mesh covered with a non-woven fabric on and underneath. The mesh system is provided with continuous folds. Section, wherein the corrugated sections are respectively provided with an upper arc portion and a lower arc portion, the upper arc portion and the lower arc portion are connected by an arc-shaped oblique wire, and the upper arc portion and The lower arc is arranged next to each other. By bending with a larger arc angle, the filter area is increased, thereby increasing the filtering effect and the service life of the filter. Among them, the metal mesh can be a stainless steel mesh.

Description

Filter

The present invention relates to a filter screen, in particular to a filter screen that can increase the filtering area, thereby improving the filtering effect and service life.

Press; The metal filter is mainly used in the front side of various types of spinning nozzles for synthetic fiber and man-made fiber textiles in the chemical fiber industry and other similar conditions to filter impurities in the textile stock solution to ensure the smoothness of the spinneret holes and improve spinning Liquid purity guarantees spinning quality. For granulating products with higher standards for filtering melt impurities and dispersing requirements, the fineness of the melt can be filtered according to different mesh filter screens. Among them, the applicable fields of hot melt plastics are: granulation, spinning, sheet, film and other products nylon can be recycled and granulated into plastic products such as various electrical parts, mechanical parts, and even pipes and auto parts. Or put it into the drawing machine to make nylon yarn and make cloth. Among them, PET recycled yarn (environmental friendly yarn) is filled with other materials or used 100% after the broken pieces of PET bottles are cleaned. Because the cleanliness of recycled PET is not as good as new materials, it poses a great burden on the filtration of the polymer end and the spinning end. Therefore, increasing the filter area of the filter can effectively extend the switching time of the CPF at the spinning end.

Taking PET bottle fragments and pellets as an example, if the use of PET bottle fragments for spinning grade or engineering plastics has its limitations, therefore, if the cleaned PET bottle fragments can be melted and all contaminants and impurities can be melted After all the materials are filtered and cut into pellets, there will be fewer restrictions on the application and the quality will be closer to the new material, so that it can be directly sold to the spinning mill for direct use without breaking the filament.

Take the melt-blown non-woven fabric as an example. The melt-blown non-woven fabric is extruded through an extruder to squeeze the molten molecules into the high-speed hot air flow, and then the polymer melt is spun out through the spinneret of the ultra-fine nozzle to form ultra-fine fibers and make them horizontal. Blow onto the drum or vertically onto the screen of the collector, and pile up into a superfine fiber network structure. The ultra-fine fibers of meltblown non-woven fabrics are very suitable for general recycled products (such as recycled plastic bottles) in composite products that require filtration, shielding, heat insulation and oil absorption. Therefore, the process of recycling plastic bottles into plastics , It is necessary to continuously filter the impurities present in the recovered bottle, so different filters are needed, especially the filter for the final filtering of raw material impurities, which requires considerable precision and filtering effect.

The conventional filter used in this program is shown in Figure 1. The mesh body 1 is set as a continuous upper detour section 111 and a lower detour section 112, and a vertical line is formed between the upper detour section 111 and the lower detour section 112. 113 is connected to form a continuous buckling section 11. Although this method can increase the filtering area and filtering effect, the rate of increase is limited, and if the material of the mesh body 1 is stainless steel upper and lower coated non-woven fabrics, the smaller-angle upper and lower detour sections 111 and 112 may cause The damage of the upper and lower non-woven fabrics causes the filtering accuracy to be inaccurate or too large (for example, the original filter unit is 10u changed to 40u), which loses the efficiency of filtering and reduces the service life of the filter.

There is another filter screen in the prior art, as shown in Figure 2. The mesh body 2 is set as a continuous upper bending section 211 and a lower bending section 212, and the upper bending section 211 and the lower bending section 212 are diagonally separated. The shape line 213 is connected to form a continuous wave segment 21. Although this method can also increase the filtering area and filtering effect, the rate of increase is limited. Similarly, if the mesh body 2 is made of stainless steel mesh, the upper and lower parts are covered with non-woven fabrics. The bending section 211 and the lower bending section 212 of the circuitous section 112 with a smaller angle will be more likely to cause damage to the upper and lower non-woven fabrics, resulting in inaccurate or excessive filtration (for example, the original filter unit is 10u changed to 40u) and lost The efficiency of filtration and reduce the service life of the filter.

In view of this, after continuous research and experimentation, the applicant came up with a design of a filter screen that can increase the filtering area, thereby improving the filtering effect and service life.

The main purpose of the present invention is to provide a filter screen that can increase the filtering area, so as to be used in filtration projects that require considerable precision and filtering effect, thereby improving the filtering effect and the service life of the filter screen.

The aforementioned filter screen is provided with a mesh body, and the mesh system is provided with continuous corrugated sections, wherein the corrugated sections are respectively provided with an upper arc part and a lower arc part, the upper arc part and The lower arc part is connected by an arc-shaped oblique wire, and the upper arc part and the lower arc part are arranged in close proximity to each other. By bending with a larger arc angle, the filter area is increased, thereby increasing the filtering effect and the service life of the filter.

In the aforementioned filter mesh, the mesh system is stainless steel mesh material or other metal mesh material suitable for filtering.

In the aforementioned filter mesh, the mesh system can be composed of a non-woven fabric covered with stainless steel mesh material or metal mesh material suitable for filtering.

Please refer to FIG. 3, which is a structural diagram of the present invention. As shown in the figure, the present invention is provided with a net body 3 on which a continuous fold section 31 is provided, wherein the fold sections 31 are respectively provided with an upper arc portion 311 and a lower arc The upper arc part 311 and the lower arc part 312 are connected by an arc-shaped oblique wire 313, and the upper arc part 311 and the lower arc part 312 are arranged in close proximity.

The aforementioned mesh 3, in this embodiment, is a stainless steel mesh or other metal mesh that can be used to filter impurities.

The filter screen composed of the aforementioned components and manufacturing methods can be used in filtering, especially in the process of filtering raw material impurities before spinning synthetic fibers and rayon fibers in the chemical fiber industry. 311 and the lower arc part 312 are bent with a larger arc angle to increase the filtering area, thereby increasing the filtering effect and the service life of the filter, so that it can be applied to the filtering project that requires considerable precision and filtering effect according to different needs. .

Please refer to FIG. 4 and FIG. 5 at the same time, which are the process diagrams of the present invention. As shown in the figure, the aforementioned manufacturing process of the present invention is mainly as follows: 1. First, make the metal material (stainless steel) into a basic net body 3. 2. Shape the net body 3 into upper and lower continuous bending, and form an appropriate distance between each bending end. 3. Set the upper and lower continuously bent net body 3 to upper and lower limit. 4. After squeezing on both sides, make the upper and lower continuous bending sections close to each other. 5. After proper extrusion, the upper arc part 311 and the lower arc part 312 of the net body 3 are connected by an arc-shaped oblique wire 313, and the upper arc part 311 and the lower arc part 312 are separated from each other. Immediately arranged.

Please refer to FIG. 6, which is a structural diagram of another embodiment of the present invention. As shown in the figure, the mesh body 3 of the present invention can be a non-woven fabric 4, which is covered with stainless steel mesh material or other metal mesh materials that can be used to filter impurities on the top and bottom of the non-woven fabric 4, respectively. Body 3 is provided with continuous corrugated sections 31. The corrugated sections 31 are respectively provided with an upper arc portion 311 and a lower arc portion 312. The upper arc portion 311 and the lower arc portion 312 are The arc-shaped oblique wire 313 is connected, and the upper arc part 311 and the lower arc part 312 are arranged in close proximity. In order to form another type of filter, it is used for filtering, especially for filtering projects that require considerable precision and filtering effect (for example, the final filtering of raw materials and impurities in the process of recycling PET bottles into plastics) Process), the upper arc part 311 and the lower arc part 312 can be bent with larger arc angles to increase the filtering area, thereby improving the filtering effect, and can indeed prevent the middle non-woven fabric 4 from being damaged during bending. Thereby improving the service life of the filter.

Please refer to FIG. 7, which is a three-dimensional view of the filter screen made by the present invention. Please cooperate with Figures 3 and 6, as shown in the figure, the present invention can be used to fix the frame portion 5 on the periphery of the mesh body 1 after the aforementioned mesh body 1 is formed into a continuous fold section 31 to form a filter mesh A The finished product is used for the filtration of impurities, especially for filtration projects that require considerable precision and filtration effects (such as: the terminal filtering of raw material impurities for regenerated products). In this embodiment, the filter screen A is set in a circular shape, of course, it can also be set in other different shapes.

The foregoing embodiments are merely illustrative of the preferred embodiments of the present invention, rather than limiting the scope of the present invention. Any minor modifications and changes will still not lose the spirit of the present invention, nor deviate from the spirit of the present invention.

In summary, the present invention uses a metal mesh material, or a metal material covered non-woven mesh body, and the mesh body is provided with a continuous crease section formed by the adjacent upper arc part and the lower arc part , To form a filter. The filter screen can increase the filtering area to be used in filtration projects that require considerable precision and filtering effect, thereby increasing the filtering effect and the service life of the filter screen. For a practical design, it is truly a creation of novelty. I file an application for a patent according to the law. I pray that the Bureau will review it and grant the patent as soon as possible, which is very convenient.

1: net body 11: Bend section 111: Upper Detour Section 112: Lower roundabout section 113: vertical line 2: net body 21: wave segment 211: Upper fold section 212: Lower fold section 213: diagonal line 3: net body 31: crease section 311: upper arc 312: Lower arc 313: oblique wire 4: Non-woven fabric 5: Frame A: Filter

Figure 1 is a structural diagram of a conventional filter. Figure 2 is a structural diagram of another conventional filter. Figure 3 is a structural diagram of the present invention. Figures 4 and 5 are process diagrams of the present invention. Fig. 6 is a structural diagram of another embodiment of the present invention. Figure 7 is a three-dimensional view of the filter screen made by the present invention.

3: net body

31: crease section

311: upper arc

312: Lower arc

313: oblique wire

Claims (3)

A filter screen is provided with a mesh body with continuous corrugated sections, wherein the corrugated sections are respectively provided with an upper arc part and a lower arc part, the upper arc part and the The lower arc part is connected by an arc-shaped oblique wire, and the separated upper arc part and the lower arc part are arranged in close proximity; when applied to filtering, the upper arc part and the The lower arc part is bent with a larger arc angle to increase the filtering area, thereby improving the filtering effect and the service life of the filter. The filter net according to claim 1, wherein the net system is a stainless steel net material or a metal net material suitable for filtering. The filter net according to claim 1, wherein the net system may be composed of a stainless steel net material covered above and below the non-woven fabric or a metal net material suitable for filtering.

Images