Sand core suction filtration device capable of preventing ultraviolet light and preserving heat

Abstract

The utility model relates to the field of filtration and separation, in particular to a sand core suction filtration device capable of preventing ultraviolet light and preserving heat, which comprises a brown heat-preserving filter cup, a filter membrane, a sand core filter, an interface clamp, a triangular flask, a constant-temperature water tank and a vacuum pump, the brown heat preservation filter cup is provided with the hollow interlayer, the circulating water outlet and the circulating water inlet are respectively connected with the constant-temperature water tank, the constant-temperature water tank provides circulating hot water to provide a heat preservation environment for filtering, and the filtering efficiency of viscous liquid is ensured. The device can effectively prevent ultraviolet light and is good in heat preservation effect, and meanwhile, if raw materials (reagents) need to be cooled in the filtering process to stabilize the characters of the raw materials and reduce volatilization, cooling water of 2-10 DEG C can pass through the device.

Description

Technical Field

[0001] The utility model relates to the field of filtration and separation, and specifically to a sand core filtration device that is applicable to the production of medical device intraocular lenses, and that requires UV protection and heat preservation during the filtration of hydrophobic acrylic raw materials or other viscous raw materials. Background Art

[0002] Currently available sand core filtration devices require the raw materials (reagents) to be filtered to be poured into an open filter cup. The filter cup is then vacuum-filtered through the filter membrane, sand core filter head, and triangular flask. The filter cup is transparent, lacks UV protection, and lacks thermal insulation. Hydrophobic acrylic raw materials readily solidify when exposed to light. Furthermore, as viscous liquids, they must be kept at a constant temperature during the filtration process to ensure fluidity and facilitate optimal filtration. The current method involves wrapping a rubber hose around the filter cup, connecting both ends to the inlet and outlet of a thermostatic water tank. During operation, the thermostatic water tank's circulating pump is turned on, allowing hot water to pass through the hose and transfer its temperature to the outer surface of the filter cup, thereby maintaining the raw materials' temperature. This is not only cumbersome, but also results in poor heat transfer through the hose, resulting in significant temperature differences and high energy consumption. There are also prior art methods for heat preservation of filtration devices, such as CN 219111050 U, which disposes a water bath outside the filtration device. However, the water bath is not integral with the filtration device, and the cover needs to be opened frequently to add filtered liquid, which is inconvenient to operate. Moreover, the refrigerated liquid in the water bath can easily enter the filter cup and contaminate the filtered liquid. Summary of the Invention

[0003] To solve the above problems, the utility model provides a suction filtration device that prevents ultraviolet light, provides an insulated filter cup for precise temperature control, and directly uses circulating water from a constant temperature water tank for heat preservation, ensuring better fluidity of the raw materials. It is simple to operate and safe and reliable. The specific technical solution is as follows:

[0004] A sand core filtration device that can protect against ultraviolet light and keep warm, the device includes a brown thermal insulation filter cup, a filter membrane, a sand core filter, an interface clamp, a triangular flask, a constant temperature water tank and a vacuum pump; the brown thermal insulation filter cup is fixedly connected by the interface clamp, the filter membrane and the sand core filter, the filter membrane is arranged between the brown thermal insulation filter cup and the funnel part of the sand core filter, and is clamped by the interface clamp, the collecting bottle part of the sand core filter is sealed and fixed to the triangular flask, and an air extraction port is provided on the collecting bottle to connect to the vacuum pump; the outer wall of the brown thermal insulation filter cup is a hollow interlayer, and a circulating water outlet and a circulating water inlet are respectively provided on the upper and lower outer sides of the brown thermal insulation filter cup, the circulating water outlet is connected to the return water port of the constant temperature water tank, and the circulating water inlet is connected to the outlet of the constant temperature water tank.

[0005] Furthermore, the brown heat-insulating filter cup is an integrally formed glass piece, the hollow interlayer thickness is 3-10 mm, the outer layer is brown, and the inner layer is transparent or brown.

[0006] Furthermore, the filter membrane is a microporous filter membrane with a pore size of 0.5 μm-2 μm, which is used to filter impurities and relatively large particles in the raw materials.

[0007] Furthermore, the sand core filter includes a funnel and a collecting bottle that are sealed together. The diameter of the open part of the funnel is consistent with the diameter of the brown insulated filter cup. The mouth of the funnel extends into a triangular flask through the collecting bottle. The triangular flask is used to hold the filtered filtrate. An exhaust port is provided on the collecting bottle and is connected to a vacuum pump. The vacuum pump draws out the air in the triangular flask, maintains the vacuum in the bottle, and maintains the filtration speed.

[0008] Furthermore, the bottom of the collecting bottle matches the triangular flask, and both are frosted surfaces, and the two cooperate to seal.

[0009] Furthermore, the interface clip is a clamping part used to fix the brown heat-insulating filter cup, filter membrane and sand core filter.

[0010] Furthermore, the constant temperature water tank is equipped with an adjustable heating device to provide circulating water, and the circulating water temperature is 30℃-85℃, providing hot water of the required temperature to the brown insulated filter cup to maintain the required temperature for filtration; the vacuum pump reduces the pressure in the triangular flask, maintains negative pressure, improves filtration efficiency, and saves filtration time.

[0011] The beneficial effects of the present invention are as follows: (1) it has an anti-ultraviolet function, which can ensure that the raw materials during filtration will not be slowly solidified by ultraviolet light; (2) it has a heat preservation function, which can ensure the smooth filtration of certain raw materials (reagents) that need to be heated to have good fluidity; (3) it can filter raw materials with poor fluidity multiple times, which can increase the filtration speed; (4) it has a good heat preservation effect, and the difference between the interlayer water temperature and the water tank temperature is within 1°C, and the temperature control effect is good; (5) it ensures the absolute isolation of the heat preservation liquid and the filtration liquid, avoiding contamination of the filtration liquid. In addition, if the raw materials (reagents) need to be cooled during filtration to stabilize their properties and reduce volatility, this device can also be used to pass cooling water at 2-10°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the structure of this utility model.

[0013] Reference numerals:

[0014] 1- brown insulated filter cup; 2- filter membrane; 3- interface clip; 4- sand core filter; 41- funnel; 42- collection bottle; 5- Erlenmeyer flask; 6- constant temperature water tank; 7- vacuum pump. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1 As shown, a sand core filtration device that can protect against ultraviolet light and keep warm, the device includes a brown heat-insulating filter cup 1, a filter membrane 2, a sand core filter 4, an interface clamp 3, a triangular flask 5, a constant temperature water tank 6 and a vacuum pump 7; the brown heat-insulating filter cup is fixedly connected by the interface clamp 3, the filter membrane 2, and the sand core filter 4, the filter membrane 2 is arranged between the brown heat-insulating filter cup 1 and the funnel part of the sand core filter 4, and is clamped by the interface clamp 3, the collecting bottle 42 part of the sand core filter 4 is sealed and fixed to the triangular flask 5, and the collecting bottle 42 is provided with an exhaust port connected to the vacuum pump 7; the outer wall of the brown heat-insulating filter cup 1 is a hollow interlayer, and a circulating water outlet and a circulating water inlet are respectively provided on the upper and lower outer sides of the brown heat-insulating filter cup 1, the circulating water outlet is connected to the return water port of the constant temperature water tank 6, and the circulating water inlet is connected to the outlet of the constant temperature water tank 6.

[0017] The filter membrane 2 is a microporous filter membrane with a pore size of 1.0 μm in this embodiment, and is used to filter impurities and relatively large particles in the raw materials.

[0018] The sand core filter 4 includes a funnel 41 and a collecting bottle 42 that are sealed together. The diameter of the open part of the funnel is consistent with the diameter of the brown insulated filter cup. The mouth of the funnel extends into a triangular flask through the collecting bottle. The triangular flask is used to hold the filtered filtrate. The collecting bottle is provided with an exhaust port connected to a vacuum pump. The vacuum pump removes the air in the triangular flask, maintains the vacuum in the bottle, and maintains the filtration speed.

[0019] The bottom of the collecting bottle 42 matches the triangular flask 5 and both are frosted, and the two cooperate to form a seal.

[0020] The interface clip is a clamping part used to fix the brown heat-insulating filter cup, filter membrane and sand core filter.

[0021] The constant temperature water tank is equipped with an adjustable heating device to provide circulating water. The circulating water temperature is 30℃-85℃, providing hot water of the required temperature to the brown insulation filter cup to maintain the required temperature for filtration; the vacuum pump reduces the pressure in the triangular flask, maintains negative pressure, improves filtration efficiency, and saves filtration time.

[0022] 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. A sand core filtration device capable of preventing ultraviolet light and maintaining heat, characterized in that: The device includes a brown thermal insulation filter cup, a filter membrane, a sand core filter, an interface clamp, a triangular flask, a constant temperature water tank and a vacuum pump; the brown thermal insulation filter cup is fixedly connected by the interface clamp, the filter membrane and the sand core filter; the filter membrane is arranged between the brown thermal insulation filter cup and the funnel part of the sand core filter and is clamped by the interface clamp; the collecting bottle part of the sand core filter is sealed and fixed to the triangular flask; the collecting bottle is provided with an air extraction port connected to the vacuum pump; the outer wall of the brown thermal insulation filter cup is a hollow interlayer, and a circulating water outlet and a circulating water inlet are respectively provided on the upper and lower outer sides of the brown thermal insulation filter cup; the circulating water outlet is connected to the return water port of the constant temperature water tank, and the circulating water inlet is connected to the outlet of the constant temperature water tank.

2. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 1, characterized in that: The brown heat-insulating filter cup is an integrally formed glass piece, the hollow interlayer thickness is 3-10 mm, the outer layer is brown, and the inner layer is transparent or brown.

3. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 1, characterized in that: The filter membrane is a microporous filter membrane with a pore size of 0.5 μm-2 μm.

4. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 1, characterized in that: The sand core filter includes a funnel and a collecting bottle that are sealed together. The diameter of the open part of the funnel is consistent with the diameter of the brown insulated filter cup. The mouth of the funnel extends into a triangular flask through the collecting bottle. The triangular flask is used to hold the filtered filtrate. The collecting bottle is provided with an exhaust port connected to a vacuum pump.

5. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 3, characterized in that: The bottom of the collecting bottle matches the triangular flask, and both are frosted surfaces, and the two cooperate to seal.

6. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 1, characterized in that: The interface clip is a clamping portion.

7. The sand core filtration device capable of preventing ultraviolet light and maintaining heat according to claim 1, characterized in that: The constant temperature water tank is provided with an adjustable heating device to provide circulating water, and the circulating water temperature is 30°C-85°C; the vacuum pump reduces the pressure in the triangular flask and maintains negative pressure.

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