Microporous filter and filtering method thereof

Abstract

The invention discloses a microporous filter which comprises a filter body, a filter assembly and a stirring assembly, the filter assembly and the stirring assembly are arranged in the filter body, the bottom of the filter body is connected with a bottom cover, the upper portion of the filter assembly is connected with an air cylinder outside the filter body, a filter residue cleaning assembly is arranged in the filter body, and the stirring assembly is connected with a motor arranged outside the filter body. And the air cylinder works to drive the filtering assembly to reciprocate up and down in the direction of the filter residue cleaning assembly, so that the reciprocating action of the filtering assembly above or below the filter residue cleaning assembly is realized. The device has the outstanding effects that the filter element assembly is controllably reciprocated up and down and is combined with the residue removal assembly, so that the purpose of matched auxiliary filtration is achieved, a large amount of solvent / water is prevented from being adopted for cleaning filter residues on the surface of a filter element, the filtering efficiency of a high-residue-content material is greatly improved, post-treatment on the solvent / water flowing out after washing is also avoided, and the service life of the filter element assembly is prolonged. The process is simpler, and the method is more environment-friendly.

Description

Technical Field

[0001] The invention belongs to the technical field of microporous filtration, and in particular relates to a microporous filter and a filtration method thereof. Background Art

[0002] Microporous filters can filter out particles and bacteria above 0.1um in liquids and gases. They have the advantages of high filtration accuracy, fast transition speed, less adsorption, no medium shedding, acid and alkali corrosion resistance, and easy operation. Therefore, in the industrial production process, microporous filters have a wide range of applications, and are used to filter various solvents or materials. In practical applications, it is found that when washing and filtering materials with a high slag content, the slag in the material often adheres to the surface of the filter element, affecting the filtration efficiency, making the filtration not thorough enough, and the final dryness of the filter residue cannot meet the requirements. This material is usually some chemical reagents. If a large amount of solvent is used for flushing in the later stage, the flushing solvent discharge will increase the subsequent post-processing process, and at the same time, it will also cause hardness to the environment. Therefore, when filtering this material, in order to filter thoroughly, the current common practice is to add a stirring rod in the filter body to stir frequently during the filtration period, but if the stirring rod is not properly controlled during stirring, it is easy to break the filter element. Therefore, how to effectively improve the filtration efficiency is a technical problem that needs to be solved at present. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide a microporous filter that can effectively improve the filtration efficiency of materials with high slag content.

[0004] The purpose of the present invention is achieved through the following technical solutions: A microporous filter comprises a body and a filter assembly and a stirring assembly placed in the body, wherein a bottom cover is connected to the bottom of the body, the top of the filter assembly is connected to a cylinder outside the body, a filter residue cleaning assembly is arranged in the body, the stirring assembly is connected to a motor placed outside the body, and the cylinder drives the filter assembly to reciprocate up and down along the direction of the filter residue cleaning assembly to realize the reciprocating movement of the filter assembly above or below the filter residue cleaning assembly.

[0005] Preferably, the filter assembly comprises a filter element group and a collecting pipe arranged above the filter element group, a filtered liquid channel is arranged above the collecting pipe, and an outlet of the filtered liquid channel is placed outside the fuselage.

[0006] Preferably, the filter element group is composed of filter elements evenly distributed on the collecting pipe, and a siphon tube is arranged in the filter element.

[0007] Preferably, the filter residue cleaning assembly comprises a filter residue cleaning grid plate, and the filter residue cleaning grid plate is evenly distributed with through holes for the filter element to pass through.

[0008] Preferably, a second filter assembly is arranged in the fuselage, the second filter assembly comprises a filter plate and a perforated plate arranged below the filter plate, and a second filtered liquid outlet is arranged at the bottom of the bottom cover.

[0009] Preferably, the second filter assembly is arranged on the bottom cover, and one side of the bottom cover is connected to an opening and closing cylinder.

[0010] Preferably, the second filter assembly is placed at the lower end of the fuselage, and a slag discharge port is provided on one side of the fuselage.

[0011] Preferably, the stirring component is a stirring rod arranged in the body, a stirring blade is arranged at the bottom of the stirring rod, and the stirring blade is arranged above the second filter component.

[0012] Preferably, a feed inlet is provided on the top of the fuselage.

[0013] Preferably, any one of the above-mentioned filtering methods of a microporous filter comprises the following steps: S1, the material to be filtered enters through the feed port on the top of the machine body, at this time, the filter component is above the filter residue cleaning component; S2, the motor drives the stirring component to stir and mix the materials; S3, when the stirring component in S2 stirs for a period of time, the cylinder works, driving the filter component to enter the bottom of the filter residue cleaning component for filtering, and ventilating through the positive blowing port; the filter component filters, and the filtrate is collected from the filtrate outlet; the filtrate below the second filter component is collected by the second filtrate outlet; the filter element with a siphon can accelerate the filtration of the filtrate; S3. After the filtration is completed, the cylinder works to drive the filter assembly to move upward from the bottom of the filter residue cleaning assembly, and the filter residue on the surface of the filter element is scraped off by the filter residue cleaning assembly; S4, finally discharge the filter residue to complete the whole process.

[0014] The outstanding effect of the present invention is that by controlling the filter element assembly to reciprocate up and down in a controllable manner and combining it with a slag removal assembly, the purpose of auxiliary filtration is achieved, avoiding the use of a large amount of solvent / water to clean the filter residue on the surface of the filter element, greatly improving the filtration efficiency of materials with high slag content, and avoiding post-treatment of the solvent / water flowing out of the flushing, the process is simpler and more environmentally friendly.

[0015] The specific implementation modes of the present invention are further described below in combination with the accompanying drawings of the embodiments, so that the technical solutions of the present invention are easier to understand and grasp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the filter structure of the present invention.

[0018] Figure 2 The present invention Figure 1 Schematic diagram of the structure in which the middle filter element assembly is placed in the filter residue cleaning assembly.

[0019] Figure 3 It is a top view of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of a filter according to another structure of the present invention, in which the second filter element assembly is placed at the lower end of the filter body. DETAILED DESCRIPTION

[0021] The present invention discloses a microporous filter, combined with Figure 1-Figure 4 As shown, the microporous filter comprises a body 1 and a filtering assembly and a stirring assembly placed in the body 1, and the bottom of the body is connected to a bottom cover 6. The stirring assembly 15 is connected to a motor 7 placed outside the body 1, and a feed port 12, a positive blowing port 13 and a venting port 14 are provided on the top of the body.

[0022] The top of the filter assembly is connected to the cylinder 4 outside the fuselage 1. When the cylinder 4 is working, it will drive the filter assembly to reciprocate up and down in the fuselage. The filter assembly includes a filter element group and a collection pipe 3 arranged above the filter element group. The filter element group is composed of multiple filter elements 31. The filter elements 31 are all arranged on the collection pipe 3. In order to facilitate filtering, a siphon tube 311 is arranged in the filter element 31. The setting of the siphon tube 311 can improve the filtering efficiency during filtering. A filter liquid channel is arranged above the collection pipe 3, and the filter liquid channel outlet 32 ​​is placed outside the fuselage 1.

[0023] The body 1 is provided with a filter residue cleaning assembly 2. In this embodiment, the filter residue cleaning assembly 2 includes a filter residue cleaning grid plate, and the filter residue cleaning grid plate is evenly distributed with through holes for the filter element to pass through. The cylinder 4 works to drive the filter assembly to reciprocate up and down along the filter residue cleaning assembly 2 to achieve the reciprocating movement of the filter element above or below the filter residue cleaning grid plate through the through hole. The through hole matches the diameter of the filter element.

[0024] The second filter assembly is arranged in the body 1, and the second filter assembly includes a filter plate 62 and a perforated plate 61 arranged below the filter plate 62. The bottom of the bottom cover 1 is provided with a second filtrate outlet 11. The second filter assembly has two different position settings, and can be applied to filters with two bottom cover settings. The stirring assembly is a stirring rod arranged in the body 1, and a stirring blade is arranged at the bottom of the stirring rod, and the stirring blade is arranged above the second filter assembly.

[0025] Combination Figure 1 As shown, the second filter assembly is arranged on the bottom cover 6, and one side of the bottom cover 6 is connected with an opening and closing cylinder 5. That is, the bottom cover is an opening and closing type, and the bottom cover is opened by the action of the opening and closing cylinder 5, and the opening of the bottom cover can discharge the filter residue.

[0026] Another way, combining Figure 4 As shown, the second filter assembly is placed at the lower end of the body 1, and a slag discharge port 16 is provided on one side of the body 1. At this time, the bottom cover is closed. The slag discharge port 16 will not be higher than the body position where the second filter assembly is located.

[0027] In order to better understand the filtering method of the present invention, the present invention also discloses a filtering method of the microporous filter, comprising the following steps: S1. The material to be filtered and washed enters through the feed port 12 at the top of the body 1. At this time, the filter assembly is above the filter residue cleaning assembly; usually, the material to be filtered will be located below the filter residue cleaning assembly 2 for better and more complete filtering.

[0028] S2. The stirring component is driven by the motor to work and fully stir the materials to be filtered and washed.

[0029] S3. After a period of stirring, the motor stops stirring, and the cylinder 4 starts working, driving the filter assembly to move below the filter residue cleaning assembly to filter the material, and ventilates and filters through the positive blowing port. The entry of gas can quickly press the filtered liquid into the filter element.

[0030] The filtrate is filtered through the filter assembly and collected from the filtrate outlet; the filtrate below the second filter assembly is collected from the second filtrate outlet; that is, when the filter is filtering, the filtrate is collected both above and below.

[0031] After filtering for a period of time, the cylinder 4 works again to drive the filter assembly to move upward from the bottom of the filter residue cleaning assembly, and the filter residue on the surface of the filter element is scraped off by the filter residue cleaning assembly; S4. Keep the filter element away from the filter residue cleaning component. After filtering, open the bottom cover to discharge the filter residue. Figure 4The bottom cover is closed. At this time, it is necessary to start the stirring component again to stir the filter residue, and the filter residue is discharged from the slag discharge port during stirring.

[0032] Finally, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A microporous filter, characterized in that: It includes a body and a filter assembly and a stirring assembly placed in the body. The bottom of the body is connected to a bottom cover. The top of the filter assembly is connected to a cylinder outside the body. A filter residue cleaning assembly is provided in the body. The stirring assembly is connected to a motor placed outside the body. The cylinder drives the filter assembly to reciprocate up and down along the direction of the filter residue cleaning assembly to realize the reciprocating movement of the filter assembly above or below the filter residue cleaning assembly.

2. A microporous filter according to claim 1, characterized in that: The filter assembly comprises a filter element group and a collecting pipe arranged above the filter element group. A filter liquid channel is arranged above the collecting pipe, and an outlet of the filter liquid channel is placed outside the machine body.

3. A microporous filter according to claim 2, characterized in that: The filter element group is composed of filter elements evenly distributed on the collecting pipe, and a siphon tube is arranged in the filter element.

4. A microporous filter according to claim 3, characterized in that: The filter residue cleaning assembly comprises a filter residue cleaning grid plate, and the filter residue cleaning grid plate is evenly distributed with through holes for the filter element to pass through.

5. A microporous filter according to claim 1, characterized in that: A second filter assembly is arranged in the fuselage, and the second filter assembly includes a filter plate and a perforated plate arranged below the filter plate. A second filtered liquid outlet is arranged at the bottom of the bottom cover.

6. A microporous filter according to claim 5, characterized in that: The second filter assembly is arranged on the bottom cover, and one side of the bottom cover is connected with an opening and closing cylinder.

7. A microporous filter according to claim 5, characterized in that: The second filter assembly is disposed at the lower end of the machine body, and a slag discharge port is provided on one side of the machine body.

8. A microporous filter according to claim 5, characterized in that: The stirring component is a stirring rod arranged in the body, and a stirring blade is arranged at the bottom of the stirring rod, and the stirring blade is arranged above the second filtering component.

9. A microporous filter according to claim 1, characterized in that: A feed inlet is provided on the top of the fuselage.

10. A filtering method for a microporous filter according to any one of claims 1 to 9, characterized in that: The steps include: S1, the material to be filtered enters through the feed port on the top of the machine body, at this time, the filter component is above the filter residue cleaning component; S2, the motor drives the stirring component to stir and mix the materials; S3, when the stirring component in S2 stirs for a period of time, the cylinder works, driving the filter component to enter the bottom of the filter residue cleaning component for filtering, and ventilating through the positive blowing port; the filter component filters, and the filtrate is collected from the filtrate outlet; the filtrate below the second filter component is collected by the second filtrate outlet; the filter element with a siphon can accelerate the filtration of the filtrate; S3. After the filtration is completed, the cylinder works to drive the filter assembly to move upward from the bottom of the filter residue cleaning assembly, and the filter residue on the surface of the filter element is scraped off by the filter residue cleaning assembly; S4, finally discharge the filter residue to complete the whole process.

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