Silicone oil filtering device

Abstract

The utility model provides a kind of silicone oil filtering device, comprising: filter shell;First conical filter screen;Multiple and detachable connection are sequentially provided in filter shell axial direction, flange is equipped in the connecting portion of each filter shell, the filter shell of top is equipped with first conical hopper, first conical hopper is used to gather silicone oil;Second conical filter screen, second conical filter screen and first conical filter screen concave surface corresponding interval arrangement, first conical filter screen and second conical filter screen are respectively detachable connection in middle filter shell, first conical filter screen and second conical filter screen between being equipped with first filter assembly, second conical filter screen bottom surface detachable connection has second filter assembly.The application has multistage precision filtration;It is convenient to wash, maintain and replace, and use convenience is improved;Effectively reduce silicone oil viscosity, accelerate flow speed, improve filtration efficiency;Ensure that fluid distribution is uniform, reduce impact and jam risk;Sealing is reliable, and operation is stable.

Description

Technical Field

[0001] This utility model relates to the field of silicone oil, and in particular to a silicone oil filtration device. Background Technology

[0002] Silicone oil filtration devices are used to remove impurities such as particles and moisture from silicone oil, ensuring its purity and performance in demanding fields such as medical, electronics, and vacuum pumps. The device typically consists of a filter element, housing, and monitoring components, enabling online or offline purification, extending silicone oil lifespan, and ensuring equipment safety and product quality.

[0003] Currently, a silicone oil filtration device (CN222111049U) is described. During operation, silicone oil is filtered through filter plates and discharged from the outlet pipe. When the filter plates become clogged or the discharge slows down, a lifting assembly raises the filter plates to the feed inlet position. This pushes a U-shaped pusher plate, driven by a cylinder, horizontally through the filter plates, displacing impurities out of the chamber or causing them to fall to the bottom. The pusher plate's movement direction is perpendicular to the filter plate's insertion direction, ensuring filter plate stability. When replacing filter plates, the entire plate can be lifted out of the chamber for quick disassembly and cleaning, improving maintenance efficiency and filtration continuity.

[0004] However, this method has obvious drawbacks. Using a single filter plate makes it difficult to handle impurities of different particle sizes, which may affect filtration accuracy and efficiency. Utility Model Content

[0005] The main purpose of this invention is to provide a silicone oil filtration device to solve the problem of silicone oil filtration.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a silicone oil filtration device, comprising: Filter housing; First conical filter screen; The filter housings are arranged axially in multiple detachable connections. Each filter housing has a flange at the connection point. The top filter housing has a first conical funnel, which is used to collect silicone oil. The second conical filter screen is provided with its concave surfaces corresponding to and spaced apart from the first conical filter screen. The first and second conical filters screens are detachably connected to the middle filter housing. A first filter assembly is provided between the first and second conical filters screens. A second filter assembly is detachably connected to the bottom surface of the second conical filter screen.

[0007] In the preferred embodiment, the filter housing includes a first filter housing and a second filter housing. The top of the first filter housing is provided with an inlet pipe, and a first conical funnel is fixedly provided inside the first filter housing. A first conical filter screen is detachably connected inside the second filter housing, and a plurality of first leakage holes are spaced apart on the first conical filter screen.

[0008] In a preferred embodiment, the filter housing further includes a third filter housing and a fourth filter housing. The third filter housing contains a first filter assembly, the fourth filter housing contains a second conical filter screen, the third filter housing contains a third receiving cavity, and the fourth filter housing contains a fourth receiving cavity.

[0009] In a preferred embodiment, a heating ring is fixedly provided on the outer wall of the first filter housing. The heating ring is used to heat the silicone oil and accelerate its flow. The first filter housing is provided with a first receiving cavity for containing the silicone oil.

[0010] In the preferred embodiment, the second filter housing is provided with a second receiving cavity, and the lower end of the second receiving cavity is provided with two detachably connected first fixing rings, one of which is fixed in the second receiving cavity and the other is fixed to the first conical filter screen.

[0011] In the preferred embodiment, a drain pipe is provided in the middle of the first conical funnel, and a flow limiting plate is fixedly provided in the drain pipe. Multiple through holes are provided at intervals on the flow limiting plate.

[0012] In the preferred embodiment, the connection between the third filter housing and the fourth filter housing is provided with a detachable second fixing ring, one of which is fixed to the lower end of the third accommodating cavity, and the other is fixed to the second conical funnel.

[0013] In the preferred embodiment, the first filter assembly includes a first filter element, which is a PTFE membrane filter element, and the first filter element is disposed in the third accommodating cavity.

[0014] In the preferred embodiment, a plurality of second leakage holes are spaced apart on the second conical filter screen, each second leakage hole is fixedly provided with a connecting pipe, and each connecting pipe is threadedly connected to a second filter assembly. The second filter assembly includes a second filter element, which is a silicon carbide ceramic filter element.

[0015] In the preferred embodiment, a second conical funnel is fixedly provided on the bottom surface of the fourth filter housing, and an outlet pipe is provided on the bottom surface of the second conical funnel. The beneficial effects of this utility model of a silicone oil filtration device are as follows: 1. Multi-stage precision filtration: Combining conical filter screen, PTFE membrane filter element and silicon carbide ceramic filter element, it achieves multi-stage high-efficiency purification from coarse filtration to fine filtration; 2. Modular and detachable structure: Each housing and filter element is designed to be detachable, making it easy to clean, maintain and replace, thus improving ease of use; 3. Heating and viscosity reduction function: Integrated heating ring effectively reduces silicone oil viscosity, accelerates flow rate, and improves filtration efficiency; 4. Flow channel optimization design: Through conical funnel, flow restrictor and uniform perforation structure, ensure uniform fluid distribution and reduce the risk of impact and blockage; 5. Reliable sealing and stable operation: The flange connection and fixed ring structure ensure the system's sealing performance, while the support frame enhances the overall mechanical stability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the filter housing of this utility model; Figure 2 This is a structural diagram of the first conical filter screen of this utility model; Figure 3 This is a utility model Figure 2 Structural diagram of A in the middle; Figure 4 This is a structural diagram of the second conical filter screen and the second filter element of this utility model; Figure 5 This is a utility model Figure 4 Structural diagram of B in the middle; Figure 6 This is a structural diagram of the first conical funnel of this utility model; Figure 7 This is a cross-sectional structural diagram of the filter housing of this utility model; Figure 8 This is a structural diagram of the accommodating cavity of this utility model.

[0017] In the diagram: 1. First filter housing; 101. First receiving cavity; 102. Inlet pipe; 2. Second filter housing; 201. Second receiving cavity; 3. Third filter housing; 301. Third receiving cavity; 4. Fourth filter housing; 401. Fourth receiving cavity; 5. Flange; 6. Heating ring; 7. First filter element; 8. Second filter element; 9. First conical filter screen; 901. First leakage hole; 10. Second conical filter screen; 1001. Second leakage hole; 1002. Connecting pipe; 11. First fixing ring; 12. Second fixing ring; 13. First conical funnel; 1301. Leakage pipe; 1302. Flow restrictor; 14. Second conical funnel; 1401. Outlet pipe; 15. Support frame. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0019] This application provides a silicone oil filtration device.

[0020] The filter housing mainly consists of multiple first filter housings 1, second filter housings 2, third filter housings 3, and fourth filter housings 4 arranged sequentially along the axial direction. Flanges 5 are fixedly connected at the joints of the first filter housings 1, second filter housings 2, third filter housings 3, and fourth filter housings 4 to allow for detachable connection. Each joint is sealed to prevent silicone oil leakage during filtration and to facilitate disassembly and maintenance. A first conical funnel 13 is located at the top of the filter housing, guiding and collecting the silicone oil to be treated, allowing it to flow evenly into the filter structure below, thus improving filtration efficiency. Inside the middle section of the filter housing, a first conical filter screen 9 and a second conical filter screen 10 are installed, arranged concavely opposite each other at intervals to form a sandwich space. A first filter assembly is located within this sandwich space for fine filtration of the silicone oil; simultaneously, a second filter assembly is connected to the bottom surface of the second conical filter screen 10, further enhancing filtration accuracy and impurity interception capabilities. All filters and filter components feature a detachable design for easy regular cleaning or replacement, ensuring long-term, efficient operation of the equipment. The overall structure is compact and highly modular, suitable for multi-stage filtration of fine chemical liquids such as high-purity silicone oil.

[0021] At the center of the first conical funnel 13, a downward-extending drain pipe 1301 is located. This drain pipe 1301 serves as a crucial channel for the transition of silicone oil from the funnel to the lower filter structure, and a flow-limiting plate 1302 is fixedly installed inside it. The flow-limiting plate 1302 is disc-shaped and tightly embedded in the inner cavity of the drain pipe 1301. It is used to regulate the downward flow velocity of the silicone oil and prevent it from impacting the lower filter screen due to excessive flow. Multiple through holes are evenly spaced on the flow-limiting plate 1302. The diameter and number of these through holes are precisely designed to ensure stable and uniform flow of silicone oil while also providing initial rectification and buffering. The overall structure not only improves the stability of the filtration system but also enhances the controllability of the flow of high-viscosity silicone oil, making it suitable for high-precision filtration applications.

[0022] The first filter housing 1 has an inlet pipe 102 at its top for introducing the silicone oil to be filtered into the housing. Its interface design facilitates a sealed connection with the upstream feeding system, ensuring a stable and leak-free feeding process. A first conical funnel 13 is fixedly installed inside the first filter housing 1. Its structure is a cone shape, wider at the top and narrower at the bottom, used to guide the silicone oil or other liquids to be filtered to flow towards the lower filtration area, improving the uniformity of fluid distribution and filtration efficiency. Immediately below, the second filter housing 2 has a first conical filter screen 9 detachably connected inside. This filter screen also has a conical structure, facilitating matching with the upper funnel and forming a smooth flow channel. The surface of the first conical filter screen 9 has multiple first perforations 901 spaced apart. These perforations are arranged according to a specific pattern, and their diameter is set according to the required filtration precision, effectively intercepting larger particulate impurities while ensuring smooth liquid flow.

[0023] Because of its detachable connection, the first conical filter screen 9 is easy to remove for regular cleaning or replacement, ensuring long-term stable operation of the equipment. The first conical filter screen 9 is a magnetic filter screen, which facilitates the adsorption of iron filings mixed in with the silicone oil when it is transported in the metal pipe. Furthermore, the conical tip of the first conical filter screen 9 is set upwards. When silicone oil drips onto the first conical filter screen 9, because the first leakage hole 901 provided on the first conical filter screen 9 is small, the silicone oil will slowly flow along the top surface of the first conical filter screen 9 with the cone facing upwards, fully adsorbing the iron filings in the silicone oil and coarsely screening out the larger impurities in the silicone oil.

[0024] A heating ring 6 is fixedly installed on the outer wall of the first filter housing 1. This heating ring 6 surrounds the outer circumference of the housing, providing stable and uniform heating to the interior, effectively increasing the temperature of the silicone oil, reducing its viscosity, and thus accelerating the flow rate of the silicone oil during filtration, thereby improving overall filtration efficiency. The first filter housing 1 has a first receiving cavity 101 specifically for temporarily containing the silicone oil to be filtered. The inner wall of the first receiving cavity 101 is polished to reduce adhesion and residue, ensuring smooth silicone oil flow. The heating ring 6 is linked to a temperature control system, allowing for precise adjustment of the heating temperature according to process requirements, making it suitable for high-efficiency filtration scenarios involving temperature-sensitive or high-viscosity silicone oils.

[0025] The second filter housing 2 has a second accommodating cavity 201 for accommodating the silicone oil to be filtered. At the lower end of the second accommodating cavity 201, two detachably connected first fixing rings 11 are provided for securely installing and positioning key filter components. One first fixing ring 11 is fixed to the lower end of the inner wall of the second accommodating cavity 201, while the other first fixing ring 11 is connected to the edge or outer periphery of the first conical filter screen 9. The two are quickly assembled and disassembled using bolts or flanges. This double-ring fixing structure not only enhances the stability of the first conical filter screen 9 during operation, preventing displacement due to fluid impact, but also facilitates regular maintenance, cleaning, or replacement of the filter screen, improving the operability and service life of the equipment. It is suitable for silicone oil filtration systems with high cleanliness requirements.

[0026] The third filter housing 3 has a third receiving cavity 301 inside to accommodate the first filter assembly. Its structure is rationally designed with smooth inner walls, which helps reduce fluid resistance and prevent impurity deposition. The fourth filter housing 4 has a corresponding fourth receiving cavity 401 inside, which is axially connected to the third receiving cavity 301, together forming a key link in the multi-stage filtration channel. Both receiving cavities employ a well-sealed structure to ensure no liquid leakage during filtration. The overall layout is compact, facilitating quick connection with other housing modules via flanges or other means, improving the convenience of equipment assembly and maintenance.

[0027] The third filter housing 3 and the fourth filter housing 4 are each equipped with a detachable second fixing ring 12 at the connection point, used to securely support and seal the interface between adjacent housings. One second fixing ring 12 is fixedly installed on the lower inner wall of the third accommodating cavity 301, while the other second fixing ring 12 is fixed to the upper end or outer edge of the second conical funnel 14. The two are reliably connected by bolts or flanges. This design not only ensures the sealing and structural strength of the connection between the housings but also facilitates disassembly, maintenance, or replacement of internal filter components. The second fixing ring 12 is made of corrosion-resistant and high-temperature-resistant materials, adapting to the heat load and chemical environment that may exist during silicone oil filtration, effectively ensuring the stable operation and long service life of the entire multi-stage filtration system.

[0028] The first filtration assembly includes a first filter element 7, which is made of high-performance polytetrafluoroethylene (PTFE) membrane material. PTFE membranes possess excellent chemical stability, high-temperature resistance, and hydrophobic and oleophobic properties, making them particularly suitable for the precision filtration of high-purity silicone oil. The first filter element 7 is precisely installed in the third receiving cavity 301 within the third filter housing 3. Its structural design ensures a tight fit between the filter element and the inner wall of the cavity, preventing unfiltered liquid from bypassing. The microporous structure of the PTFE membrane efficiently intercepts micron-sized particulate impurities while maintaining low flow resistance, ensuring filtration efficiency and throughput. Furthermore, the first filter element 7 is detachably fixed, facilitating periodic replacement or cleaning and meeting the process requirements for long-term stable operation. The lower end of the first filter element 7 rests on a second fixing ring 12 fixed in the third filter housing 3, and the upper end of the first filter element 7 is supported by a first fixing ring 12 fixed in the second filter housing 2. The arrangement of the first fixing ring 11 and the second fixing ring 12 prevents the first filter element 7 from shifting.

[0029] The surface of the second conical filter screen 10 is provided with multiple second perforations 1001 spaced apart. The diameter of the second perforation 1001 is larger than the diameter of the first perforation 901. Each perforation is fixedly connected to a connecting pipe 1002. The connecting pipe 1002 is detachably threadedly connected to the second filter assembly through an internal thread structure, facilitating maintenance and replacement. The second filter assembly includes a second filter element 8, which is made of high-hardness, corrosion-resistant, and high-temperature-resistant silicon carbide ceramic material. It has excellent mechanical strength and chemical stability, making it suitable for high-precision filtration under harsh operating conditions. The silicon carbide ceramic filter element has a uniform microporous structure, which can effectively trap fine particulate impurities in silicone oil while maintaining good flow performance. This modular design not only improves the flexibility and reliability of the filtration system but also significantly extends the service life of the equipment.

[0030] A second conical funnel 14 is fixedly installed on the bottom surface of the fourth filter housing 4. Its structure is a cone shape, wider at the top and narrower at the bottom, used to efficiently collect and guide the silicone oil after multi-stage filtration to the outlet. An outlet pipe 1401 is located at the center of the bottom of the second conical funnel 14, serving as a discharge channel for the filtered clean silicone oil. The interface can be connected to subsequent delivery pipelines or collection devices. To enhance the stability of the overall structure, a support frame 15 is also fixedly installed on the outside of the second conical funnel 14. This support frame 15 is typically made of stainless steel or high-strength alloy, serving as a load-bearing and reinforcing element to ensure stable operation over long periods. The entire design balances functionality, sealing, and mechanical reliability, making it suitable for high-precision industrial filtration systems.

[0031] The implementation principle of this embodiment is as follows: The silicone oil filtration device adopts a multi-stage modular structure, consisting of first to fourth filter housings connected sequentially from top to bottom. Silicone oil flows into the first filter housing 1 through the top inlet pipe 102, where it is heated and its viscosity reduced under the action of the heating ring 6, and is uniformly guided through the first conical funnel 13 and the leakage pipe 1301 with a flow-limiting plate 1302. It then enters the second filter housing 2, where it undergoes preliminary filtration through the first conical filter screen 9 with the first leakage hole 901. The silicone oil continues to flow down to the third filter housing 3, where it undergoes fine filtration by the first filter element 7 made of PTFE material; then it enters the fourth filter housing 4, where it undergoes deep filtration through the second silicon carbide ceramic filter element 8 on the second conical filter screen 10. Finally, the clean silicone oil collects in the second conical funnel 14 and is discharged through the outlet pipe 1401. All components are designed to be detachable for easy maintenance and replacement, and the overall system has good sealing performance, high filtration accuracy, and stable operation.

[0032] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A silicone oil filtration device, characterized in that, include: Filter housing; First conical filter (9); The filter housing is provided with multiple detachable connections in axial sequence. Each filter housing is provided with a flange (5) at the connection point. The top filter housing is provided with a first conical funnel (13), which is used to collect silicone oil. The second conical filter (10) and the first conical filter (9) are arranged with their concave surfaces corresponding to each other at intervals. The first conical filter (9) and the second conical filter (10) are detachably connected to the middle filter housing. A first filter assembly is provided between the first conical filter (9) and the second conical filter (10). A second filter assembly is detachably connected to the bottom surface of the second conical filter (10).

2. The silicone oil filtration device according to claim 1, characterized in that, The filter housing includes a first filter housing (1) and a second filter housing (2). The top of the first filter housing (1) is provided with an inlet pipe (102). A first conical funnel (13) is fixedly provided inside the first filter housing (1). A first conical filter screen (9) is detachably connected inside the second filter housing (2). A plurality of first leak holes (901) are spaced apart on the first conical filter screen (9).

3. The silicone oil filtration device according to claim 1, characterized in that, The filter housing also includes a third filter housing (3) and a fourth filter housing (4). The third filter housing (3) is provided with a first filter assembly, and the fourth filter housing (4) is provided with a second conical filter screen (10). The third filter housing (3) is provided with a third accommodating cavity (301), and the fourth filter housing (4) is provided with a fourth accommodating cavity (401).

4. A silicone oil filtration device according to claim 2, characterized in that, A heating ring (6) is fixedly provided on the outer wall of the first filter housing (1). The heating ring (6) is used to heat the silicone oil and accelerate the flow of the silicone oil. A first accommodating cavity (101) is provided in the first filter housing (1). The first accommodating cavity (101) is used to contain the silicone oil.

5. A silicone oil filtration device according to claim 2, characterized in that, The second filter housing (2) is provided with a second accommodating cavity (201), and the lower end of the second accommodating cavity (201) is provided with two detachably connected first fixing rings (11), one of which is fixed in the second accommodating cavity (201) and the other is fixed to the first conical filter screen (9).

6. A silicone oil filtration device according to claim 2, characterized in that, The first conical funnel (13) has a drain pipe (1301) in the middle, and a flow limiting plate (1302) is fixedly installed in the drain pipe (1301). Multiple through holes are provided on the flow limiting plate (1302) at intervals.

7. A silicone oil filtration device according to claim 3, characterized in that, The third filter housing (3) and the fourth filter housing (4) are respectively provided with a detachable second fixing ring (12) at the connection point. One of the second fixing rings (12) is fixed to the lower end of the third accommodating cavity (301), and the other second fixing ring (12) is fixed to the second conical funnel (14).

8. A silicone oil filtration device according to claim 3, characterized in that, The first filter assembly includes a first filter element (7), which is a PTFE membrane filter element, and is located in the third accommodating cavity (301).

9. A silicone oil filtration device according to claim 3, characterized in that, The second conical filter screen (10) is provided with a plurality of second leakage holes (1001) spaced apart. Each second leakage hole (1001) is fixedly provided with a connecting pipe (1002), and each connecting pipe (1002) is threadedly connected to a second filter assembly. The second filter assembly includes a second filter element (8), and the second filter element (8) is selected as a silicon carbide ceramic filter element.

10. A silicone oil filtration device according to claim 3, characterized in that, The bottom surface of the fourth filter housing (4) is fixedly provided with a second conical funnel (14), and the bottom surface of the second conical funnel (14) is provided with an outlet pipe (1401).

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