Hydrophobic acrylate filtering device and middle filtering cup thereof

Abstract

The utility model relates to the field of solution filtration, in particular to a hydrophobic acrylate filtering device and a middle filter cup thereof, which are applicable to production of medical instrument intraocular lenses. The middle filter cup comprises an upper flange interface, a sand core filter plate, a funnel, a cup body and a lower flange interface, according to the utility model, the middle filter cup can be matched and clamped between the filter cups and the sand core filter through the joint clamps, so that the formed suction filtration device forms a two-stage or multi-stage filter system, and filter membranes between the filter cups can select different filter diameters or the same filter diameter according to requirements; the suction filtration device can effectively solve the problems of complicated repeated filtration operation, raw material waste and pollution of the suction filtration device in the prior art, and has obvious effect.

Description

Technical Field

[0001] The utility model relates to the field of solution filtration, in particular to a hydrophobic acrylic ester filtration device and an intermediate filter cup thereof which can be applied to the production of medical device intraocular lenses. Background Art

[0002] The suction filtration device currently on the market consists of a filter cup, a filter membrane, a sand core filter, a triangular flask, and a matching clip and vacuum pump. It is simple and convenient to operate for solutions or experimental objects that are easy to flow. However, the device can only filter once. For some hydrophobic acrylic ester raw materials that are viscous and require multiple filtrations, the suction filtration device in the prior art cannot complete the filtration requirements of multiple particle sizes at one time. The prior art usually adopts a method of re-transferring the filtrate after one filtration and assembling suction filtration devices of different particle sizes, which takes longer time and will waste more raw materials. The operation is cumbersome and inefficient, and there is a risk of filtrate contamination. Prior art CN 220310155 U discloses a graded suction filtration device, which can be provided with multiple sub-leak bottles to achieve grading, but the bottle body structure is complex and is provided with structures such as a lifting rod and a filter seat, which can easily lead to problems such as short circuit of filtration and difficulty in cleaning. Summary of the Invention

[0003] To solve the above problems, it is necessary to design an intermediate filter cup that can be used between the filter cup and the sand core filter, which can filter twice or more at a time. This can not only greatly save operation time, but also reduce unnecessary waste of viscous raw materials. The specific technical solution is as follows:

[0004] A middle filter cup of a hydrophobic acrylic ester filter device comprises an upper flange interface, a sand core filter plate, a funnel, a cup body and a lower flange interface; the upper flange interface is a circular interface, used to connect to the lower interface of an upper ordinary filter cup or the lower flange interface of an intermediate filter cup; a sand core filter plate is provided inside the upper flange interface; the lower portion of the upper flange interface is a funnel, which extends into the cup body, and the funnel and the cup body are sealed or integrally formed; a closing end is provided at the bottom of the cup body and a lower flange interface is provided at the end of the closing end, the size of the lower flange interface being larger than the closing end so that a groove is formed at the closing end for fixing and clamping by a clamping joint; the upper flange interface and the lower flange interface are the same size, used to connect to the upper interface of the sand core funnel of the next layer or the upper flange interface of the intermediate filter cup.

[0005] Furthermore, the sand core filter plate is made of sintered quartz sand and has a pore size of 10-50 μm. It is used to support the filter membrane and pass the filtered liquid. The funnel is used to receive the filtered material and concentrate it in the center of the filter cup to prevent it from flowing toward the walls. The cup body is the main structure of the filter cup, used to connect the upper and lower flange interfaces and the glass funnel. The lower flange interface has the same dimensions as the upper flange interface and is used to connect to the sand core funnel assembly.

[0006] Further, the upper flange interface, sand core filter plate, funnel, cup body and lower flange interface are integrally sintered and formed of glass material.

[0007] Meanwhile, the utility model provides a kind of hydrophobic acrylate filtering device with the intermediate filter cup, including ordinary filter cup, intermediate filter cup, filter membrane, joint clamp, sand core filter and triangular bottle, first filter membrane is arranged between ordinary filter cup lower interface and the upper flange interface of intermediate filter cup and is clamped by joint clamp;Second filter membrane is arranged between the lower flange interface of intermediate filter cup and the upper interface of sand core filter and is clamped by joint clamp;The lower interface of sand core filter and triangular bottle mouth are ground surface cooperation sealing fixed, and vacuum extraction port is arranged on the sand core filter and is connected with vacuum pump.

[0008] Further, the first filter membrane and the second filter membrane have the same pore size.

[0009] Further, the first filter membrane has a pore size of 1.5-2 μm, and the second filter membrane has a pore size of 0.5-1 μm.

[0010] Further, the intermediate filter cup is provided as 1-3.

[0011] The utility model has the advantages that: (1) filtering time can be saved, and multiple filtering can be performed simultaneously; (2) filtering raw materials can be saved, and raw material waste in the filtering material transfer process can be avoided; (3) the structure is designed ingeniously, and the characteristics of the filter cup and the sand core filter are combined: the upper half is the same as the sand core filter, and the lower half is the same as the lower part of the filter cup, the connection is simple, and the operation is convenient; (4) after use, the device can be easily disassembled and cleaned. Test verification shows that, for 120ml raw material filtering twice, the time is saved by 31 minutes, and the raw material loss is reduced by 43%, and the effect is obvious. If three or more times of filtering are required, multiple intermediate filter cups can be stacked according to the needs, and auxiliary supports can be added as required to prevent the device from being too high and unstable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The utility model intermediate filter cup structure schematic view;

[0013] Figure 2 The utility model hydrophobic acrylate filtering device structure schematic view with intermediate filter cup.

[0014] REFERENCE SIGNS

[0015] 1-filter cup;2-intermediate filter cup;3-filter membrane;4-joint clamp;5-sand core filter;6-triangular bottle;2.1-sand core filter plate;2.2-upper flange interface;2.3-funnel;2.4-cup body;2.5-lower flange interface. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, a schematic diagram of the structure of the intermediate filter cup of the present invention includes an upper flange interface 2.2, a sand core filter plate 2.1, a funnel 2.3, a cup body 2.4 and a lower flange interface 2.5; the upper flange interface 2.2 is a circular interface, which is used to connect with the lower interface of the upper ordinary filter cup or the lower flange interface of the intermediate filter cup; a sand core filter plate 2.1 is provided inside the upper flange interface; the lower part of the upper flange interface 2.5 is a funnel, which extends into the cup body, and the funnel and the cup body are sealed or integrally formed; a closing end is provided at the bottom of the cup body and a lower flange interface is provided at the end of the closing end, and the size of the lower flange interface is larger than the closing end so that a groove is formed at the closing end for fixing and clamping by a clamping joint; the upper flange interface and the lower flange interface are the same size, which are used to connect with the upper interface of the sand core funnel of the next layer or the upper flange interface of the intermediate filter cup.

[0018] The sand core filter plate is sintered from quartz sand, with a 10μm pore size in this embodiment. It supports the filter membrane and allows the filtered liquid to pass through. The funnel collects the filtered material and concentrates it in the center of the filter cup to prevent it from flowing toward the walls. The cup body is the main structure of the filter cup, connecting the upper and lower flanges and the glass funnel. The lower flange, the same size as the upper flange, connects to the sand core funnel assembly. The upper flange, sand core filter plate, funnel, cup, and lower flange are sintered and molded from glass.

[0019] like Figure 2 As shown, a schematic structural diagram of the hydrophobic acrylic ester filtering device of the present invention comprises an ordinary filter cup 1, an intermediate filter cup 2, a filter membrane 3, a joint clamp 4, a sand core filter 5 and a triangular flask 6. A first filter membrane is arranged between the lower interface of the ordinary filter cup and the upper flange interface of the intermediate filter cup and is clamped by the joint clamp; a second filter membrane is arranged between the lower flange interface of the intermediate filter cup and the upper interface of the sand core filter and is clamped by the joint clamp; the lower interface of the sand core filter and the mouth of the triangular flask are frosted surfaces that cooperate to seal and fix, and a vacuum port is provided on the sand core filter to be connected to a vacuum pump.

[0020] The first and second filter membranes have the same pore size. They can also have different pore sizes, with gradually decreasing pore sizes. For example, in this embodiment, the first filter membrane has a pore size of 1.5 μm, while the second filter membrane has a pore size of 1 μm. One to three intermediate filter cups are provided, such as one in the illustrated embodiment, to achieve secondary filtration.

[0021] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An intermediate filter cup of a hydrophobic acrylic filter device, characterized in that: The intermediate filter cup includes an upper flange interface, a sand core filter plate, a funnel, a cup body and a lower flange interface; the upper flange interface is a circular interface, which is used to connect with the lower interface of the upper ordinary filter cup or the lower flange interface of the intermediate filter cup; a sand core filter plate is arranged inside the upper flange interface; the lower part of the upper flange interface is a funnel, which extends into the cup body, and the funnel and the cup body are sealed or integrally formed; a closing end is provided at the bottom of the cup body and a lower flange interface is provided at the end of the closing end, and the size of the lower flange interface is larger than the closing end so that a groove is formed at the closing end for fixing and clamping by a clamping joint; the upper flange interface and the lower flange interface are the same size, which are used to connect with the upper interface of the sand core funnel of the next layer or the upper flange interface of the intermediate filter cup.

2. The intermediate filter cup of the hydrophobic acrylic filtration device according to claim 1, characterized in that: The sand core filter plate is made of sintered quartz sand and has a filter pore size of 10-50 μm.

3. The intermediate filter cup of the hydrophobic acrylic filtration device according to claim 1, characterized in that: The upper flange interface, sand core filter plate, funnel, cup body and lower flange interface are made of glass and sintered into an integral body.

4. A hydrophobic acrylic ester filter device having the intermediate filter cup according to any one of claims 1 to 3, characterized in that: It includes an ordinary filter cup, an intermediate filter cup, a filter membrane, a joint clamp, a sand core filter and a triangular flask. A first filter membrane is arranged between the lower interface of the ordinary filter cup and the upper flange interface of the intermediate filter cup and is clamped by the joint clamp; a second filter membrane is arranged between the lower flange interface of the intermediate filter cup and the upper interface of the sand core filter and is clamped by the joint clamp; the lower interface of the sand core filter and the mouth of the triangular flask are frosted surfaces that are matched and sealed, and a vacuum port is arranged on the sand core filter to be connected to a vacuum pump.

5. The hydrophobic acrylate filtration device according to claim 4, characterized in that: The first filter membrane and the second filter membrane have the same pore size.

6. The hydrophobic acrylate filtration device according to claim 4, characterized in that: The pore size of the first filter membrane is 1.5-2 μm, and the pore size of the second filter membrane is 0.5-1 μm.

7. The hydrophobic acrylate filtration device according to claim 4, characterized in that: The number of the intermediate filter cups is 1-3.

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