A filter for the production of eye wash

Abstract

This product relates to the field of eyewash production technology, providing a filter for eyewash production, including a raw material tank for storing the eyewash concentrate, a coarse filter for filtering large particulate impurities, and a cross-flow filter including a filter tube and a filter membrane. One end of the filter tube is connected to the coarse filter, and the other end passes through the cross-flow filter and connects to the raw material tank. An opening is provided at the bottom of the filter tube located inside the cross-flow filter. The filter membrane is positioned on the opening and parallel to the flow direction of the eyewash through the filter tube, used to filter large molecular impurities in the eyewash. This filter removes large molecules through the opening parallel to the flow direction of the eyewash and the filter membrane, and washes away any remaining large molecules on the filter membrane surface through the flow of the eyewash, preventing large molecules from clogging the filter membrane and improving the utilization rate of the filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of eyewash production technology, and more specifically, to a filter for eyewash production. Background Technology

[0002] Eye wash is a liquid product specifically designed for eye cleaning and care, primarily used to remove foreign objects from the eye, relieve eye discomfort, or assist in the treatment of minor eye inflammation. Its formula must conform to the physiological environment of the ocular surface (such as a pH value and osmotic pressure close to that of tears) to ensure safety and comfort. The production process of eye wash requires filtering out impurities to prevent them from damaging the eyes.

[0003] Most existing filters used in eyewash production employ a filtration method where the liquid flows vertically through the surface of the filter membrane. This method easily causes impurities to accumulate on the filter membrane surface, clogging it and affecting production. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a filter for eyewash production that prevents impurities from clogging the filter membrane.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A filter for producing eye wash includes:

[0007] Raw material tank, used to store the concentrate of eyewash solution;

[0008] A coarse filter tank is located on one side of the raw material tank and connected to the raw material tank, and is used to filter large particulate impurities.

[0009] A cross-flow filter tank is located on one side of the coarse filter tank; it includes a filter tube and a filter membrane; one end of the filter tube is connected to the coarse filter tank, and the other end passes through the cross-flow filter tank and is connected to the raw material tank; the bottom of the filter tube located inside the cross-flow filter tank is provided with an opening; the filter membrane is disposed on the opening and is parallel to the main flow direction of the eye wash solution through the filter tube, and is used to filter large molecular impurities in the eye wash solution.

[0010] A fine filter tank, located on one side of the coarse filter tank and connected to the cross-flow filter tank, is used to filter bacteria and microorganisms in the eyewash solution.

[0011] The technical solutions described in this application have at least the following technical effects:

[0012] In this filter, the cross-flow filter tank has an opening parallel to the flow direction of the eyewash solution. A filter membrane is installed on the opening. When the eyewash solution flows over the filter membrane, the main stream of eyewash solution flows through the filter pores on the membrane. Qualified eyewash solution flows down through the filter pores to the bottom of the cross-flow filter tank, while larger molecular impurities are blocked on the membrane surface and flow back to the original solution tank with the remaining eyewash solution for re-filtration, preventing large molecular impurities from clogging the filter membrane. The filter also includes a fine filter tank to filter out microorganisms from the eyewash solution, improving filtration accuracy.

[0013] In some embodiments, the raw material tank is connected to the coarse filter tank; the fine filter tank is connected to the cross-flow filter tank.

[0014] In some embodiments, the coarse filter tank includes:

[0015] The feed inlet is located at the top of the coarse filter tank and is used to introduce eyewash solution from the raw material tank.

[0016] A filter screen, located inside the coarse filter tank and below the feed inlet, is used to filter large particles in the eyewash solution.

[0017] In some embodiments, the coarse flow filter tank further includes a pressure pump disposed on the filter tube for drawing eyewash solution; and a discharge port disposed at the bottom of the cross-flow filter tank.

[0018] In some embodiments, the discharge port is lower than the filter tube.

[0019] In some embodiments, the fine filtration tank is connected to the discharge port; the fine filtration tank also has a liquid outlet located at the bottom of the tank body.

[0020] In some embodiments, the fine filter canister is provided with a microbial filter screen inside; the microbial filter screen is used to filter microorganisms in the eye wash solution.

[0021] In some embodiments, the pore size of the filter screen, filter membrane, and microbial filter screen gradually decreases. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a filter used in the production of eye wash according to this utility model;

[0023] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0025] The following are the labels in the diagram: 10, raw material tank; 20, coarse filter tank; 21, filter screen; 30, cross-flow filter tank; 31, filter tube; 32, opening; 33, filter membrane; 34, pressure pump; 35, discharge port; 40, fine filter tank; 41, microbial filter screen; 42, liquid outlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 and Figure 3 This utility model provides a filter for the production of eye wash solution, comprising: a raw material tank 10 for storing the original eye wash solution; a coarse filter tank 20 disposed on one side of the raw material tank 10 for filtering large particulate impurities; a cross-flow filter tank 30 disposed on one side of the coarse filter tank 20, including a filter tube 31 and a filter membrane 33. One end of the filter tube 31 is connected to the coarse filter tank 20, and the other end passes through the cross-flow filter tank 30 and connects to the raw material tank 10. An opening 32 is provided at the bottom of the filter tube 31 located inside the cross-flow filter tank 30, and the opening 32 is parallel to the flow direction of the eye wash solution. The filter membrane 33 is disposed on the opening 32 for filtering large molecular impurities in the eye wash solution, and the opening 32 is parallel to the flow direction of the eye wash solution; and a fine filter tank 40 disposed on one side of the coarse filter tank 20 for filtering bacteria and microorganisms in the eye wash solution.

[0028] Understandably, the coarse filter tank 20 has an internal component for filtering large particulate impurities in the eye wash solution. For example, it could be a square tank with a basket filter inside, or a round tank with a bag filter inside, but is not limited to these. The cross-flow filter tank 30 performs secondary filtration of the eye wash solution, filtering out large molecules. For example, it could have a membrane filtration mechanism or a deep filtration mechanism inside, but is not limited to these. The opening 32 is located at the bottom of the filter tube 31 and is used to install the filter membrane 33, with the opening 32 horizontally positioned at the bottom of the filter tube 31. The filter membrane 33 is installed on the opening 32 and is used to filter large molecules in the eye wash solution. For example, it could be a microfiltration membrane or an ultrafiltration membrane, but is not limited to these. The fine filter tank 40 is used to filter microorganisms in the eye wash solution. For example, it could have an activated carbon filter or a diatomaceous earth filter inside, but is not limited to these.

[0029] As described above, in this filter, the cross-flow filter tank 30 has an opening 32 parallel to the flow direction of the eyewash solution. The filter membrane 33 is installed on the opening 32. When the eyewash solution flows through the filter membrane 33, because the flow direction of the eyewash solution is tangential to the pores on the filter membrane 33, the qualified eyewash solution flows down from the filter membrane 33 to the bottom of the cross-flow filter tank 30. Larger molecular impurities are blocked and flow back to the original solution tank with the remaining eyewash solution for re-filtration, preventing large molecular impurities from remaining on the filter membrane 33 and clogging it. The filter also includes a fine filter tank 40, which filters out microorganisms from the eyewash solution, preventing microbial contamination. Finally, through coarse filtration, cross-flow filtration, and fine filtration, the filter greatly improves the filtration accuracy.

[0030] As is known, in some embodiments, please refer to Figure 1 The raw material tank 10 is connected to the coarse filter tank 20. The fine filter tank 40 is connected to the cross-flow filter tank 30.

[0031] Understandably, the eyewash solution in the raw material tank 10 is fed into the coarse filter tank 20 for filtration, and the eyewash solution in the cross-flow filter tank 30, after filtration, is fed into the fine filter tank 40 for three filtrations. For example, the connection between the raw material tank 10 and the coarse filter tank 20, and the connection between the fine filter tank 40 and the cross-flow filter tank 30, can be made using rigid conduits or flexible conduits, etc., but is not limited to these.

[0032] As is known, in some embodiments, please refer to Figure 3 The coarse filter tank 20 includes an inlet located at the top for introducing eyewash solution from the raw material tank 10. A filter screen 21, located inside the coarse filter tank 20 and below the inlet, is used to filter large particles from the eyewash solution.

[0033] Understandably, filter 21 can intercept large particles in the eyewash solution and perform the first filtration of the eyewash solution. For example, it can be a plastic filter or a nylon filter, but it is not limited to these.

[0034] With this setup, the eyewash solution undergoes a first coarse filtration through the filter screen 21, preventing large particles from flowing into the cross-flow filter tank 30 and clogging the filter membrane 33 inside the filter tube 31.

[0035] As is known, in some embodiments, please refer to Figure 3 The coarse flow filter tank also includes a pressure pump 34 mounted on the filter tube 31 for drawing eyewash solution; and a discharge port 35 located at the bottom of the cross-flow filter tank 30. The discharge port 35 is lower than the filter tube 31. The fine flow filter tank 40 also has a liquid outlet located at the bottom of the tank body. 42

[0036] Understandably, pressure is a power component that provides the suction and attraction of hydraulic force, such as a hydraulic pump or a pneumatic pump, but is not limited to these. The liquid filtered by the filter membrane 33 is discharged into the fine filter tank 40 through the bottom outlet 35 of the cross-flow filter tank 30. Since the filter tube 31 is open, in order to prevent the filtered eyewash solution from re-entering the filter tube 31, the outlet 35 of the liquid discharge is lower than the filter tube 31.

[0037] This design prevents the already filtered eyewash solution from clogging the filter membrane 33.

[0038] As is known, in some embodiments, please refer to Figure 2 and Figure 3 The fine filtration tank 40 is connected to the discharge port 35. The fine filtration tank 40 is equipped with a microbial filter 4121; the microbial filter 4121 is used to filter microorganisms in the eye wash solution.

[0039] Understandably, the microbial filter 4121 is a component that filters out bacteria and other microorganisms in the eye wash solution. For example, it can be a diatomaceous earth filter 21 or an activated carbon filter 21, but it is not limited to these.

[0040] As is known, in some embodiments, please refer to Figure 3 The pore sizes on filter screen 21, filter membrane 33, and microbial filter screen 4121 gradually decrease.

[0041] Understandably, the filtration precision of filter screen 21, filter membrane 33, and microbial filter screen 4121 gradually increases. For example, the pore size of filter screen 21 can be 10μm, the pore size of filter membrane 33 can be 0.1μm, and the pore size of microbial filter screen 4121 can be 0.01μm, or the pore size of filter screen 21 can be 8μm, the pore size of filter membrane 33 can be 0.08μm, and the pore size of microbial filter screen 4121 can be 0.02μm, etc., but is not limited to these.

[0042] This setting gradually improves filtration accuracy and prevents filter clogging.

[0043] As described above, the eyewash solution in the raw material tank 10 is drawn into the coarse filter tank 20 for the first coarse filtration. Then, it is drawn into the filter tube 31 of the cross-flow filter tank 30. As the eyewash solution passes through the filter membrane 33 inside the cross-flow filter tank 30, the large molecules in the solution are filtered out and fall to the bottom of the cross-flow filter tank 30. The remaining liquid, carrying the filtered-out large molecules, flows back to the raw material tank 10 for further filtration. This cycle repeats until all the liquid is filtered. The eyewash solution after the second filtration is then sent to the fine filter tank 40 for a third filtration, removing microorganisms. The resulting clean eyewash solution is then discharged through the outlet 42.

[0044] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A filter for producing eyewash solution, characterized in that, include: Raw material tank, used to store the concentrate of eyewash solution; A coarse filter tank is located on one side of the raw material tank and connected to the raw material tank, and is used to filter large particulate impurities. A cross-flow filter tank is located on one side of the coarse filter tank; it includes a filter tube and a filter membrane; one end of the filter tube is connected to the coarse filter tank, and the other end passes through the cross-flow filter tank and is connected to the raw material tank; the bottom of the filter tube located inside the cross-flow filter tank is provided with an opening; the filter membrane is disposed on the opening and is parallel to the main flow direction of the eye wash solution through the filter tube, and is used to filter large molecular impurities in the eye wash solution. A fine filter tank, located on one side of the coarse filter tank and connected to the cross-flow filter tank, is used to filter bacteria and microorganisms in the eyewash solution.

2. A filter for producing eyewash solution as described in claim 1, characterized in that, The coarse filter tank includes: The feed inlet is located at the top of the coarse filter tank and is used to introduce eyewash solution from the raw material tank. A filter screen, located inside the coarse filter tank and below the feed inlet, is used to filter large particles in the eyewash solution.

3. A filter for producing eyewash solution as described in claim 1, characterized in that, The cross-flow filter tank also includes a pressure pump installed on the filter tube for drawing eyewash solution; and a discharge port installed at the bottom of the cross-flow filter tank.

4. A filter for producing eyewash solution as described in claim 3, characterized in that, The discharge port is lower than the filter tube.

5. A filter for producing eyewash solution as described in claim 3, characterized in that, The fine filtration tank is connected to the discharge port; the fine filtration tank also has a liquid outlet located at the bottom of the tank.

6. A filter for producing eyewash solution as described in claim 1, characterized in that, The fine filtration tank is equipped with a microbial filter screen inside; the microbial filter screen is used to filter microorganisms in the eye wash solution.

7. A filter for producing eyewash solution as described in claim 2 or 6, characterized in that, The pore size of the filter screen, filter membrane, and microbial filter screen gradually decreases.

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