Wastewater filtration, recycling and reuse system for cleaning products produced by photocurable 3D printers

Abstract

The utility model provides a sewage filtering, recycling and reuse system for cleaning molded products produced by a light-cured 3D printer. The system comprises a container and a filter module in the container; the container comprises an upper cover and a base box; the upper cover is used to close the container; the filter module comprises a filter bag and a filter rack; the filter rack is used to carry and accommodate the filter bag; the base box is used to carry the filter module; the container is an airtight container, and the filter module is used to filter the cleaning liquid from the cleaning liquid mixture containing impurities.

Description

Technical Field

[0001] The utility model relates to a sewage filtering, recycling and reusing system for cleaning molded products produced by a light-cured 3D printer. Background Art

[0002] Liquid Crystal Display (LCD), Digital Light Processing (DLP), Stereo Lithography Apparatus (SLA) 3D printers use photopolymerization technology to produce light-cured plastic models. Generally speaking, light-cured resins used for 3D printing can be oily resins or water-based resins. Depending on the type, the molded products of these resins need to use 95% or 91% ethanol (Ethanol, i.e. alcohol), water or isopropyl alcohol (Isopropyl Alcohol / IPA) as cleaning liquid. The cleaning liquid is usually a volatile organic solvent. For example, when alcohol is used to clean the molded products of oily resins used for 3D printing, the cleaned alcohol will include some polymers and grease on the oily resin. The polymers and grease cause the cleaned alcohol to be contaminated. As the cleaning process continues, when the cleaned alcohol is contaminated to a certain degree of turbidity, it cannot be reused.

[0003] However, most 3D printer users or businesses can only directly dump the dirty cleaning fluid (or sewage) that cannot be reused. In other words, the cleaning fluid used does not yet have a complete household filtering, recycling, and reuse system. For example, in the case where the recycling rate of most cleaning fluids is 0%, the disposable cleaning fluid is not only a waste of cost, but also discarded by pouring it into the sewage system such as the toilet or household sewage pipe. This waste of cost and the way of discarding cleaning fluid also lead to plastic pollution and affect the environmental ecology.

[0004] Therefore, how to filter, recycle and reuse cleaning fluids and establish relevant systems to improve the environmental ecology and thereby reduce cost waste are issues that practitioners in related fields must further address. Utility Model Content

[0005] The present invention solves the problems mentioned in the prior art by means of the following aspects.

[0006] The first aspect of the utility model provides a sewage filtration, recycling and reuse system for cleaning molded products produced by a light-curable 3D printer, comprising a container and a filter module in the container; the container comprises an upper cover and a base box; the upper cover is used to seal the container; the filter module comprises a filter bag and a filter rack; the filter rack is used to carry and accommodate the filter bag; wherein the base box is used to carry the filter module; wherein the container is an airtight container, and wherein the filter module is used to filter the cleaning liquid out of a cleaning liquid mixture containing impurities.

[0007] A second aspect of the present invention is that the filter module further includes a first airtight frame strip.

[0008] A third aspect of the present invention is that the container further includes a second airtight frame strip.

[0009] A fourth aspect of the present invention is that the filter bag is made of polypropylene (PP) fiber.

[0010] A fifth aspect of the present invention is that the filter bag is made using meltblown technology.

[0011] A sixth aspect of the present invention is that the impurities include polymers or grease.

[0012] A seventh aspect of the present invention is that the cleaning liquid includes alcohol, water or isopropyl alcohol.

[0013] An eighth aspect of the present invention is that the cleaning liquid is volatile.

[0014] The ninth aspect of the utility model is that the filter rack includes a handle, a top convex frame, a first groove and a top outer edge; the upper cover includes a fixing buckle and a second groove; the base box includes a top periphery; the top outer edge supports the upper cover; the upper cover tightly fits the top periphery with the fixing buckle to fix the base box and airtightly seal the filter bag and the filter rack; the first airtight frame strip is resisted by the top periphery in the first groove; and the second airtight frame strip is resisted by the top convex frame in the second groove that adapts to the top convex frame.

[0015] The above-mentioned aspect of the utility model solves the problem of filtering, recycling and reusing the cleaning liquid, and establishes a related system, which has many advantages such as capacity selectivity of all sizes and airtight design, etc. It not only avoids waste of cost, but also improves the environment and reduces plastic pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1An exploded view of a wastewater filtration, recycling and reuse system for cleaning molded products produced by a light-curable 3D printer according to an embodiment of the present invention is shown.

[0018] Figure 2 A cross-sectional view of a wastewater filtration, recovery and reuse system for cleaning molded products produced by a light-curable 3D printer according to an embodiment of the present invention is shown.

[0019] Figure 3 A schematic diagram of a wastewater filtration, recycling and reuse system for cleaning molded products produced by a light-curable 3D printer according to another embodiment of the present invention is shown.

[0020] Reference numerals:

[0021] 100: Wastewater filtration, recycling and reuse system

[0022] 120:Container

[0023] 122: Upper cover

[0024] 123:Fixed buckle

[0025] 125: Second groove

[0026] 126: Base Box

[0027] 127: Top periphery

[0028] 160: Filter module

[0029] 162:Filter Bag

[0030] 166: Filter rack

[0031] 172:Handle

[0032] 174: Top convex frame

[0033] 176: First groove

[0034] 178: Top outer edge

[0035] 190: First airtight frame strip

[0036] 195: Second airtight frame strip

[0037] 200: Wastewater filtration, recycling and reuse system

[0038] 220:Container

[0039] 226: Base Box DETAILED DESCRIPTION

[0040] The embodiments are described in detail with reference to the accompanying drawings. Note that the following will disclose multiple embodiments of the present invention with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some known conventional structures and elements will be shown in a simple schematic manner in the drawings.

[0041] Figure 1 FIG. 1 is an exploded view of a wastewater filtration, recycling and reuse system 100 for cleaning molded products produced by a light-curable 3D printer according to an embodiment of the present invention. Figure 1 As shown, in one embodiment of the utility model, a sewage filtration, recycling and reuse system 100 for cleaning molded products produced by a light-cured 3D printer is provided, comprising a container 120 and a filter module 160 in the container 120. The container 120 comprises an upper cover 122, a base box 126 and a second airtight frame strip 195. The upper cover 122 is used to seal the container 120. The filter module 160 comprises a filter bag 162, a filter rack 166 and a first airtight frame strip 190. The filter bag 162 and the filter rack 166 each have a filter hole. The filter rack 166 is used to carry and accommodate the filter bag 162. The base box 126 is used to carry the filter module 160.

[0042] Since the cleaning liquid is usually a volatile organic solvent, the container 120 is an airtight container. Generally speaking, the cleaning liquid includes alcohol, water or isopropyl alcohol. As mentioned above, when the user uses the cleaning liquid to clean the molded product of the oily resin for 3D printing, the cleaned cleaning liquid will become a cleaning liquid mixture containing impurities. In one embodiment of the utility model, the impurities are a mixture including some polymers and grease on the oily resin.

[0043] In operation, by using the wastewater filtering, recycling and reuse system 100 for cleaning molded products of a light-curable 3D printer according to an embodiment of the present invention, first, the user opens the upper cover 122. Next, the aforementioned cleaning liquid mixture is passed through the filter module 160, that is, sequentially through the filter holes of the filter bag 162 and the filter holes of the filter rack 166, so that impurities are respectively retained in the filter bag 162 and the filter rack 166 of the filter module 160. Finally, only the cleaning liquid itself is filtered from the cleaning liquid mixture originally containing impurities and reaches the base box 126.

[0044] In one embodiment of the present invention, the filter bag 162 can be a cloth bag that has the ability to absorb approximately 1.4 kg of grease. In other words, the filter bag 162 can be used approximately 1,000 times. In terms of materials, the filter bag 162 is made of polypropylene (POLYPROPYLENE; PP) fiber. The process uses meltblown technology, which allows the filter bag 162 to have excellent grease absorption and polymer filtering performance. However, all the above specifications are only examples and are not intended to limit the present invention. For example, other materials with excellent grease absorption and polymer removal filtering performance can also be used to make the filter bag 162 of other embodiments of the present invention. Those with general knowledge in the technical field to which the present invention belongs should flexibly select the specifications of the filter bag 162 according to the size of the space and the actual needs of the environment.

[0045] In one embodiment of the present invention, the container 120 is a container with a smaller capacity or for household use, such as a storage pot of 500 ml to 1 liter. The advantage of this embodiment is that the container 120 is small in size and does not occupy storage space. However, this specification is only for example and is not intended to limit the present invention. A person with ordinary knowledge in the technical field of the present invention should flexibly select the specification of the container 120 according to the size of the space and the actual needs of the environment.

[0046] Figure 2 A cross-sectional view of a wastewater filtration, recycling and reuse system 100 for cleaning molded products produced by a light-curable 3D printer according to an embodiment of the present invention is shown, so as to explain the airtight structure of the container 120 in detail. Figure 1 and Figure 2 As shown, the filter rack 166 includes a handle 172, a top convex frame 174, a first groove 176 and a top outer edge 178. The upper cover 122 includes a fixing buckle 123 and a second groove 125. The base box 126 includes a top peripheral edge 127. The top outer edge 178 supports the upper cover 122. The upper cover 122 is tightly matched with the top peripheral edge 127 with the fixing buckle 123 to fix the base box 126 and airtightly close the filter bag 162 and the filter rack 166. The first airtight frame strip 190 is abutted by the top peripheral edge 127 in the first groove 176. The second airtight frame strip 195 is abutted by the top convex frame 174 in the second groove 125 adapted to the top convex frame 174. The advantage of this embodiment is that, in addition to preventing the volatile cleaning liquid from volatilizing as mentioned above, it also avoids transmitting irritating odors or unnecessary reactions with the air.

[0047] Figure 3 FIG. 2 is a schematic diagram of a wastewater filtration, recycling and reuse system 200 for cleaning molded products produced by a light-curable 3D printer according to another embodiment of the present invention. Figure 3As shown, in one embodiment of the present invention, the filter module 160 of the sewage filtration, recycling and reuse system 200 is suspended in a container 220 by a handle 172. The container 220 is an airtight container. Similar to the container 120, the container 220 also includes an upper cover (not shown) and a base box 226. The upper cover (not shown) is also used to close the container 220. The base box 226 can carry the filter module 160 via the handle 172.

[0048] In one embodiment of the present invention, the container 220 is a container with a larger capacity than the container 120 or a container used by merchants, such as a 5-liter to 10-liter household bucket or cement bucket. The advantage of this embodiment is that the container 220 provides a space for filtering and recovering a larger volume of cleaning liquid. However, this specification is only for example and is not intended to limit the present invention. A person with ordinary knowledge in the technical field of the present invention should flexibly select the specification of the container 220 according to the size of the space and the actual needs of the environment.

[0049] The inventor of the utility model uses a two-module (container 120 and filter module 160) or six-piece (filter bag 162, filter rack 166, first airtight frame strip 190, upper cover 122, second airtight frame strip 195 and base box 126) airtight recycling storage and system, so that after the finished product of the light-curable 3D printer is completed, a container 120 with a small volume and no storage space can be placed as a storage box. In addition, whether at home or in the office, the filtered and recycled cleaning liquid can be reused immediately, achieving the possibility of purifying and reusing the cleaning liquid.

[0050] The above-mentioned implementation of the utility model essentially solves the problem of filtering, recycling and reusing the wastewater used to clean the molded products of the light-curable 3D printer, and has many advantages such as capacity selectivity of all sizes and airtight design. In addition to the recycling feature that can avoid cost waste, it also significantly improves the environmental ecology and reduces plastic pollution by establishing a system for filtering, recycling and reusing the wastewater used to clean the molded products of the light-curable 3D printer.

[0051] Although the present invention has been disclosed in the form of implementation modes as described above, it is not intended to limit the present invention. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended claims.

Claims

1. A wastewater filtration, recycling and reuse system for cleaning products produced by a light-cured 3D printer, characterized in that: Include: Container, including; and An upper cover, used for closing the container; and Base box; A filtration module, within the container, comprises: filter bags; and A filter rack, used to carry and accommodate the filter bag; The base box is used to carry the filter module. wherein the container is an airtight container, and The filtering module is used to filter the cleaning liquid from the cleaning liquid mixture containing impurities.

2. The sewage filtration, recovery and reuse system according to claim 1, characterized in that: The filter module further includes a first airtight frame strip.

3. The sewage filtration, recovery and reuse system according to claim 2, characterized in that: The container further includes a second airtight frame strip.

4. The sewage filtration, recovery and reuse system according to claim 1, characterized in that: The filter bag is made of polypropylene (PP) fiber.

5. The sewage filtration, recovery and reuse system according to claim 1, characterized in that: The filter bag is made using meltblown technology.

6. The sewage filtration, recovery and reuse system according to claim 1, characterized in that: The impurities include polymers or grease.

7. The sewage filtration, recycling and reuse system according to claim 1, characterized in that: The cleaning fluid includes alcohol, water or isopropyl alcohol.

8. The sewage filtration, recovery and reuse system according to claim 1, characterized in that: The cleaning liquid is volatile.

9. The sewage filtration, recovery and reuse system according to claim 3, characterized in that: The filter rack comprises a handle, a top convex frame, a first groove and a top outer edge; The upper cover includes a fixing buckle and a second groove; wherein the base box includes a top perimeter; wherein the top outer edge supports the upper cover; wherein the upper cover is tightly fitted with the top periphery by the fixing buckle to fix the base box and hermetically seal the filter bag and the filter rack; wherein the first airtight frame strip is pressed against the top peripheral edge in the first groove; and The second airtight frame strip is pressed against the top convex frame in the second groove adapted to the top convex frame.

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