Online sterile filter

By using the funnel-shaped filter hole design and automated cleaning system of the online aseptic filter, the problem of slowed filtration speed caused by the accumulation of impurities on the filter screen is solved, and efficient, sterile, and continuous production is achieved.

CN223760527UActive Publication Date: 2026-01-06SHANGHAI NANHUA TRANSDUCER MFG CO LTD
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Patent Information

Application Number
CN202520060893.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-10
Publication Date
2026-01-06
Estimated Expiration
2035-01-10

AI Technical Summary

Technical Problem

During use, existing filters accumulate impurities on the filter screen, which slows down the filtration speed, increases the pressure difference, requires frequent shutdowns for cleaning, and the filter screen is prone to clogging, affecting production efficiency and costs.

Method used

An online sterile filter is designed, employing a funnel-shaped filter screen and etching technology. The filter screen has a wall thickness of 0.5 mm, a pore diameter of 0.2 mm, and a pore spacing of 1.5 mm. Combined with a material monitoring component and a controller, it achieves automated cleaning and filtration without dead angles.

Benefits of technology

This extends the online working time of the filter, reduces the frequency of downtime for cleaning and filter element replacement, improves production efficiency and quality, and enables continuous production under aseptic conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an on-line sterile filter, which relates to the field of on-line sterile filtration, and comprises a filter outer pipe, a sterile filtration component is arranged in the filter outer pipe, a feeding and discharging component is arranged on the periphery of the filter outer pipe, and a material monitoring component is arranged on one side of the sterile filtration component. And the processing technology is not complicated. Different specifications of the filter can be increased according to different requirements and the filtering area. Application is convenient, and production efficiency is greatly improved. The utility model is suitable for fluid food sterilization machines.
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Description

Technical Field

[0001] This utility model relates to the field of online aseptic filtration, and more specifically, to an online aseptic filter. Background Technology

[0002] Filters are widely used in metallurgy, chemical industry, petroleum, papermaking, pharmaceutical, food, mining, power, and urban water supply. Applications include industrial wastewater filtration, circulating water filtration, emulsion regeneration, waste oil filtration, continuous casting water systems and blast furnace water systems in the metallurgical industry, and high-pressure water descaling systems for hot rolling. Different types of filters are suitable for different application scenarios.

[0003] Applications of filtration technology in the food industry: Filtration can be used to remove insoluble solid impurities from food. For example, it can remove sugar residue from maltose syrup or filter out activated carbon during the decolorization process of glucose and edible oil. Furthermore, filtration can also be used to treat liquids such as beer, juice, milk, and salad oil to remove small amounts of insoluble solid impurities.

[0004] Filters also play an important role in the fluid food sterilization industry, and their applications are even more widespread.

[0005] A filter works by trapping impurities in a fluid through a filter screen. The fluid to be filtered enters the filter through the inlet. As it flows through the filter screen, impurities are trapped, while clean fluid flows out. As filtration continues, more and more impurities accumulate on the screen, slowing down the filtration speed and creating a pressure difference between the inlet and outlet. When the pressure difference reaches a set value, the control system activates a cleaning mechanism to discharge the accumulated impurities through the drain port, restoring filtration efficiency. However, sometimes this process is insufficient, and debris becomes stuck in the filter screen pores. Utility Model Content

[0006] In view of the problems in related technologies, this utility model proposes an online sterile filter to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] An online sterile filter includes an outer filter tube, an inner sterile filter assembly, an inlet / outlet assembly around the outer filter tube, and a material monitoring assembly on one side of the sterile filter assembly.

[0009] To achieve aseptic filtration, the aseptic filtration assembly includes a filter element installed inside the outer tube of the filter. Inside the filter element is a filter screen with horn-shaped filter holes. An inlet fixing clamp is installed at one end of the outer tube of the filter, and a clamp gasket is installed between the inlet fixing clamp and the outer tube of the filter. A cleaning discharge head is installed at the end of the outer tube of the filter away from the inlet fixing clamp, and a sealing ring is installed between the outer tube of the filter and the cleaning discharge head.

[0010] Furthermore, the filter screen has a wall thickness of 0.5 mm, a pore size of 0.2 mm, and a pore spacing of 1.5 mm.

[0011] Furthermore, in order to achieve the function of feeding and discharging materials, the feeding and discharging assembly includes a material inlet pipe, which is installed inside the inlet fixing clamp. A cleaning inlet pipe is connected to one side of the material inlet pipe, a material outlet pipe is connected to the outer periphery of the filter outer pipe, and a cleaning outlet pipe is connected to one side of the cleaning outlet head. Material conveying valves are installed inside the material inlet pipe and the material outlet pipe, and cleaning shut-off valves are installed inside the cleaning inlet pipe and the cleaning outlet pipe, respectively.

[0012] Furthermore, a controller is installed on one side of the filter's outer tube.

[0013] Furthermore, the material conveying valve and the cleaning shut-off valve are electrically connected to the controller.

[0014] Furthermore, in order to achieve the function of material monitoring, the material monitoring component includes a pressure sensor, a flow sensor on one side of the pressure sensor, and a temperature sensor on the other side of the flow sensor.

[0015] Furthermore, the pressure sensor, flow sensor, and temperature sensor are electrically connected to the controller.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention improves upon existing technology. In practical use, during online cleaning, the funnel-shaped filter holes make it easier to flush away deposits on the inner wall of the holes, extending the filter's online operating time. This reduces the number of downtime cleanings and the frequency of filter element replacement, significantly reducing operating costs and improving work efficiency. The etching technology achieves an 800-mesh filter screen, covering the entire screen down to the edges, ensuring thorough filtration and rinsing without any dead angles. The filter remains completely sterile, greatly improving the efficiency and quality of food production and processing. As the core component of the filter, the specially designed filter element creates a jetting effect inside, flushing away any impurities from its smooth inner wall. Throughout the process, material flows continuously, backwashing water consumption is low, and continuous, automated production is achieved when the pressure difference between the filter inlet and outlet returns to normal or the timer expires.

[0018] This filter has a simple structure, can withstand high pressure, and is not complicated to manufacture. Different specifications can be added based on different needs and filtration area. It is easy to use and greatly improves production efficiency. It is suitable for use in liquid food sterilization machines. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of an online sterile filter according to an embodiment of the present utility model;

[0021] Figure 2 This is one of the partial structural schematic diagrams of a sterile filtration component in an online sterile filter according to an embodiment of the present utility model;

[0022] Figure 3 This is an online sterile filter according to an embodiment of the present utility model. Figure 2 A magnified view of part A in the image;

[0023] Figure 4 This is an online sterile filter according to an embodiment of the present utility model. Figure 3 A magnified view of part B in the image;

[0024] Figure 5 This is a second schematic diagram of a portion of the structure of the sterile filtration component in an online sterile filter according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the inlet and outlet components of an aseptic filtration assembly in an online aseptic filter according to an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the material monitoring component in the aseptic filtration assembly of an online aseptic filter according to an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Filter outer tube; 2. Aseptic filter assembly; 201. Filter element; 202. Filter screen; 203. Horn-shaped filter holes; 204. Inlet fixing clamp; 205. Clamp gasket; 206. Sealing ring; 207. Cleaning discharge head; 3. Inlet / outlet assembly; 301. Material inlet pipe; 302. Cleaning inlet pipe; 303. Material discharge pipe; 304. Cleaning discharge pipe; 305. Material conveying valve; 306. Cleaning shut-off valve; 4. Material monitoring assembly; 401. Pressure sensor; 402. Flow sensor; 403. Temperature sensor; 5. Controller. Detailed Implementation

[0029] 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.

[0030] According to an embodiment of the present invention, an online sterile filter is provided, including an outer filter tube 1, a sterile filter component 2 inside the outer filter tube 1, an inlet / outlet component 3 around the outer filter tube 1, and a material monitoring component 4 on one side of the sterile filter component 2.

[0031] like Figure 1-7 As shown, according to an embodiment of the present invention, the online aseptic filter includes a filter element 201 installed inside the filter outer tube 1. A filter screen 202 is installed inside the filter element 201, and the filter screen 202 has horn-shaped filter holes 203 inside. An inlet fixing clamp 204 is installed at one end of the filter outer tube 1, and a clamp gasket 205 is installed between the inlet fixing clamp 204 and the filter outer tube 1. A cleaning discharge head 207 is installed at the end of the filter outer tube 1 away from the inlet fixing clamp 204, and a sealing ring 206 is installed between the filter outer tube 1 and the cleaning discharge head 207. The filter screen 202 has a wall thickness of 0.5 mm, a pore diameter of 0.2 mm, and a pore spacing of 1.5 mm.

[0032] Through the above technical solution, by setting the filter element 201, the filter screen 202 is made easier to use for filtering impurities. The funnel-shaped filter holes 203 have a wall thickness of 0.5mm and a filter screen pore diameter of... With a pore spacing of 1.5mm, the etched mesh is funnel-shaped, facilitating the smooth discharge of the filtrate, mitigating the risk of a sudden increase in internal pressure, and extending the filter's online operating time. During online cleaning, deposits on the inner wall of the funnel-shaped filter holes 203 are more easily flushed away, further extending the filter's online operating time. This reduces the number of downtime cleanings and the frequency of filter element replacements, significantly reducing operating costs and improving work efficiency. The clamp gasket 205 secures the inlet fixing clamp 204, and the sealing ring 206 seals the cleaning discharge head 207 during installation.

[0033] Utilizing etching technology, the 203-mesh funnel-shaped filter holes achieve a mesh count of 800, covering the entire filter screen down to the edges and corners, ensuring thorough filtration and rinsing without any blind spots. The filter remains completely sterile, significantly improving the efficiency and quality of food production and processing. As the core component of the filter, the filter element features a specially designed mesh that creates a jetting effect inside, flushing away any impurities from its smooth inner wall. Throughout the process, material flows continuously, backwashing water consumption is minimal, and continuous, automated production is achieved, even when the pressure difference between the filter inlet and outlet returns to normal or the timer expires.

[0034] like Figure 1-7 As shown, according to an embodiment of the present invention, the online aseptic filter includes a material inlet pipe 301 installed inside an inlet fixing clamp 204. A cleaning inlet pipe 302 is connected to one side of the material inlet pipe 301. A material outlet pipe 303 is connected to the outer periphery of the filter outer pipe 1. A cleaning outlet pipe 304 is connected to one side of the cleaning outlet head 207. Material conveying valves 305 are installed inside the material inlet pipe 301 and the material outlet pipe 303, respectively. Cleaning shut-off valves 306 are installed inside the cleaning inlet pipe 302 and the cleaning outlet pipe 304, respectively. A controller 5 is installed on one side of the filter outer pipe 1. The material conveying valve 305 and the cleaning shut-off valve 306 are electrically connected to the controller 5, respectively.

[0035] With the above technical solution, when it is necessary to filter materials, the material conveying valve 305 is opened by the controller 5 and the cleaning shut-off valve 306 is closed. The material enters the filter outer pipe 1 through the material inlet pipe 301 and is discharged through the material outlet pipe 303. When cleaning is required, the material conveying valve 305 is closed and the cleaning shut-off valve 306 is opened, so that the cleaning liquid enters the filter outer pipe 1 through the cleaning inlet pipe 302 and is discharged through the material outlet pipe 303.

[0036] like Figure 1-7As shown, in the online sterile filter according to an embodiment of the present invention, the material monitoring component 4 includes a pressure sensor 401, a flow sensor 402 is provided on one side of the pressure sensor 401, and a temperature sensor 403 is provided on one side of the flow sensor 402. The pressure sensor 401, the flow sensor 402 and the temperature sensor 403 are electrically connected to the controller 5.

[0037] Through the above technical solution, by setting pressure sensor 401, the material pressure can be detected; flow sensor 402 can be used to detect material flow; and temperature sensor 403 can be used to detect material temperature.

[0038] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0039] In summary, by utilizing the above-described technical solution of this utility model, the filter element 201 is provided to facilitate the use of the filter screen 202 to filter impurities. The funnel-shaped filter holes 203 have a wall thickness of 0.5 mm and a filter screen pore diameter of... With a pore spacing of 1.5mm, the etched mesh is funnel-shaped, facilitating the smooth discharge of filtrate, mitigating the risk of a sudden increase in internal pressure, and extending the filter's online operating time. During online cleaning, deposits on the inner wall of the funnel-shaped filter holes 203 are more easily flushed away, further extending the filter's online operating time. This reduces the number of downtime cleanings and the frequency of filter element replacements, significantly reducing operating costs and improving work efficiency. The clamp gasket 205 secures the inlet fixing clamp 204, and the sealing ring 206 seals the cleaning discharge head 207 during installation.

[0040] When material needs to be filtered, the material conveying valve 305 is opened and the cleaning shut-off valve 306 is closed by the controller 5. The material enters the filter outer pipe 1 through the material inlet pipe 301 and is discharged through the material outlet pipe 303. When cleaning is required, the material conveying valve 305 is closed and the cleaning shut-off valve 306 is opened, so that the cleaning liquid enters the filter outer pipe 1 through the cleaning inlet pipe 302 and is discharged through the material outlet pipe 303.

[0041] By setting pressure sensor 401, the material pressure can be detected; flow sensor 402 can be used to detect material flow; and temperature sensor 403 can be used to detect material temperature.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An in-line sterile filter, characterized in that, The utility model provides a filter outer tube (1) is equipped with sterile filter assembly (2) inside, the filter outer tube (1) is equipped with inlet and outlet assembly (3) periphery, sterile filter assembly (2) one side is equipped with material monitoring assembly (4); The sterile filter assembly (2) includes a filter cartridge (201) installed inside the filter outer tube (1), a filter screen (202) installed inside the filter cartridge (201), a horn-shaped filter hole (203) inside the filter screen (202), an inlet fixed clamp (204) installed at one end of the filter outer tube (1), a clamp pad (205) installed between the inlet fixed clamp (204) and the filter outer tube (1), a cleaning discharge head (207) installed at the end of the filter outer tube (1) away from the inlet fixed clamp (204), and a sealing ring (206) installed between the filter outer tube (1) and the cleaning discharge head (207).

2. An in-line sterile filter according to claim 1, wherein, The filter screen (202) has a wall thickness of 0.5 mm, a pore size of 0.2 mm, and a hole distance of 1.5 mm.

3. An in-line sterile filter according to claim 2, wherein, The inlet and outlet assembly (3) includes a material inlet pipe (301) installed inside the inlet fixed clamp (204), a cleaning inlet pipe (302) connected to one side of the material inlet pipe (301), a material discharge pipe (303) connected to the periphery of the filter outer tube (1), a cleaning discharge pipe (304) connected to one side of the cleaning discharge head (207), and a material conveying valve (305) installed inside the material inlet pipe (301) and the material discharge pipe (303), respectively, and a cleaning stop valve (306) installed inside the cleaning inlet pipe (302) and the cleaning discharge pipe (304), respectively.

4. An in-line sterile filter according to claim 3, wherein, The filter outer tube (1) is installed on one side of a controller (5).

5. An in-line sterile filter according to claim 4, wherein, The material conveying valve (305) and the cleaning stop valve (306) are electrically connected to the controller (5), respectively.

6. An in-line sterile filter according to claim 5, wherein, The material monitoring assembly (4) includes a pressure sensor (401), a flow sensor (402) on one side of the pressure sensor (401), and a temperature sensor (403) on one side of the flow sensor (402).

7. An in-line sterile filter according to claim 6, wherein, The pressure sensor (401), the flow sensor (402), and the temperature sensor (403) are electrically connected to the controller (5).