Flower plate type layered filter

Abstract

The utility model discloses a kind of flower board type layered filter, the filter includes body, the body downside is equipped with feed inlet, the body bottom is equipped with slag discharge port;Filtering assembly, including the flower board of being placed in the upper portion of body and the filter core assembly of being vertically and uniformly distributed on the flower board by connecting joint;The filtering assembly is connected with the filtered liquid outlet placed outside the body by pipeline;The filter core assembly includes the first filter core assembly of being placed in the middle of flower board and the second filter core assembly of being surrounded in the first filter core assembly, the upper portion of the first filter core assembly is connected with a non-pressure chamber, the upper portion of the non-pressure chamber is communicated with filtered liquid outlet by pipeline.The filter of the utility model utilizes non-pressure chamber to combine filter core assembly to realize the secondary filtration to material, and cooperate the opening and closing control of valve at different pipeline in filtering process, realize the complete filtration to material, greatly improve the filtration efficiency to material.

Description

Technical Field

[0001] This utility model belongs to the field of filtration technology, and in particular relates to a perforated plate type layered filter. Background Technology

[0002] With the development of the times, our quality of life is also improving rapidly. People have higher requirements for product quality, and producers have higher requirements for equipment. Separation equipment has emerged one after another, and filters are becoming increasingly diverse according to different applications and types of filtered materials. In the preparation process of flammable and explosive catalysts (such as Raney nickel catalysts), it is necessary to filter and recover the catalyst. Filters usually adopt tube sheet filters, which include a filter body and a tube sheet placed on the upper part of the body. Filter elements of equal length are vertically connected to the tube sheet. However, the filtration effect of this type of filter is not good. Utility Model Content

[0003] In view of the defects of the existing technology, the purpose of this utility model is to propose a perforated plate layered filter, which can greatly improve the filtration effect.

[0004] The objective of this utility model will be achieved through the following technical solution: Plate-type stratified filter, including The machine body has a feed inlet on its lower side and a slag discharge outlet at its bottom. The filter assembly includes a perforated plate located in the upper part of the machine body and filter element assemblies vertically and evenly distributed on the perforated plate via connecting joints; the filter assembly is connected to a filtrate outlet located outside the machine body via a pipe; The filter element assembly includes a first filter element assembly placed in the middle of the tube sheet and a second filter element assembly surrounding the first filter element assembly. The upper part of the first filter element assembly is connected to a pressureless chamber, and the upper part of the pressureless chamber is connected to the filtrate outlet through a pipe.

[0005] Preferably, the length of the first filter element assembly is greater than the length of the second filter element assembly, and the lower end of the first filter element assembly extends downwards close to the slag discharge port of the filter.

[0006] Preferably, the filter element assembly includes a filter element body and a hollow tube placed inside the filter element body. A gap is provided between the outer wall of the hollow tube and the inner wall of the filter element body, and a gap is provided between the bottom of the hollow tube and the bottom of the filter element body. The hollow tube is a connecting tube with openings at the top and bottom.

[0007] Preferably, the first filter element assembly is connected to the pressureless chamber through the upper outlet of the hollow tube.

[0008] Preferably, a sealing part is provided between the hollow tube and the filter element body, and the distance from the sealing part to the lower end of the filter element body is less than the distance from the sealing part to the upper end of the filter element body.

[0009] Preferably, one side of the machine body has a front blowing port, an air inlet, a filter liquid port, and a back blowing port through a pipe, and the different ports are connected and controlled by valves.

[0010] Preferably, the upper end of the pressureless chamber is connected to the filter liquid outlet through a first pipe located on the top of the machine body, and a valve is provided between the first pipe and the filter liquid outlet. The other end of the first pipe is connected to the backwash port. A second pipe and a third pipe are provided on the side of the machine body. The second pipe is connected to the filter liquid outlet through a valve. The third pipe is connected to the air inlet through a valve. A valve is connected in parallel between the second pipe and the third pipe.

[0011] Preferably, the filtration method of any one of the above-described perforated plate layered filters includes the following steps: S1. The material to be filtered enters the filter from the feed inlet of the machine body; S2. The material is filtered through the filter assembly, and the filtrate is discharged through the filtrate outlet; S3. After the filtration in S2 is completed, close the valve on the second pipe and open the positive blow port to introduce gas for the second stage of filtration. At this time, since there is no pressure chamber, a siphon effect will occur when the gas enters the machine body. The second stage of filtration will be carried out in the machine body. The filtrate will enter the first pipe again through the central tube in the first filter element assembly and flow out from the filtrate outlet until the second stage of re-filtration is completed. S4. Close the valve at the filter liquid outlet, perform backwashing and backflushing, and then open the slag discharge outlet to discharge the slag.

[0012] The outstanding effect of this utility model is that the filter of this utility model realizes two-stage filtration of materials by using a pressureless chamber combined with a filter element assembly, and with the opening and closing control of valves at different pipelines during the filtration process, it achieves thorough filtration of materials and greatly improves the filtration efficiency of materials.

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the filter structure of this utility model.

[0015] Figure 2 This is a top view schematic diagram of the perforated plate of this utility model.

[0016] Figure 3This is a schematic diagram of the structure of the first filter element assembly in the filter machine of this utility model. Detailed Implementation

[0017] This utility model discloses a perforated plate type layered filter, combined with Figures 1-3 As shown, the machine includes a body 1 and a filter assembly placed inside the body 1. The filter assembly includes a perforated plate 21 and filter element assemblies vertically and evenly distributed below the perforated plate 21. A feed inlet 11 is provided on the lower side of the body, and a slag discharge outlet 12 is provided at the bottom of the body 1. A first pipe 13 is provided at the top of the body 1, and a second pipe 14 and a third pipe 15 are provided on the upper side of the body. The second pipe 14 and the third pipe 15 are respectively located on the upper and lower sides of the perforated plate 21. One end of the second pipe 14 is connected to a filtrate inlet 141, and a control valve is provided between the second pipe 14 and the filtrate inlet 141. One end of the third pipe 15 is an air inlet 151, and a control valve for controlling the air intake is provided on the third pipe 15. A fourth pipe 16 is connected in parallel between the second pipe 14 and the third pipe 15, and a control valve is provided on the fourth pipe. The first pipe 13 is connected to the backwash port 131 via a control valve, and the first pipe 13 is also connected to the filter liquid port 141 of the second pipe. That is, the first pipe, the second pipe, the third pipe, and the fourth pipe can be connected or disconnected from each other through corresponding control valves.

[0018] The filter element assembly includes a first filter element assembly 22 located in the middle of the tube sheet 21 and a second filter element assembly 23 surrounding the first filter element assembly 22. The length of the first filter element assembly 22 is greater than the length of the second filter element assembly 23. The lower end of the first filter element assembly 22 extends downwards near the slag discharge port of the filter, and the top of the first filter element assembly 22 is connected to a pressureless chamber 24 located above the tube sheet 21. The upper end of the pressureless chamber is connected to a first pipe 14 via a pipe. The upper part of the first filter element assembly 22 is connected to a pressureless chamber 24, and the upper part of the pressureless chamber 24 is connected to the filtrate outlet 141 via a pipe through the first pipe.

[0019] The filter element assembly of this utility model includes a filter element body and a hollow tube placed inside the filter element body. A gap is formed between the outer wall of the hollow tube and the inner wall of the filter element body, and a gap is also formed between the bottom of the hollow tube and the bottom of the filter element body. The hollow tube is a connecting tube with openings at the top and bottom. To improve filtration efficiency, a sealing portion is provided between the hollow tube and the filter element body. The distance from the sealing portion to the lower end of the filter element body is less than the distance from the sealing portion to the upper end of the filter element body. The presence of the sealing portion, during filtration, creates a barrier between the outer wall of the central tube and the inner wall of the filter element body, generating a pressure difference during subsequent airflow to assist in desiccation.

[0020] To better understand the structure of the filter element assembly, the following description uses the first filter element assembly as an example. The first filter element assembly includes a first filter element body 221 and a first hollow tube 222 located at the center of the first filter element body 221. The first hollow tube 222 is a hollow tube with openings at the top and bottom. A gap is provided between the first hollow tube 222 and the first filter element body 221. During filtration, the filtrate can flow inside the first hollow tube 222 and also between the first hollow tube 222 and the first filter element body 221. The upper end of the first hollow tube 222 extends upward beyond the first filter element body 221, and the first filter element assembly 22 is connected to the pressureless chamber 24 through the upper outlet of the first hollow tube 222. The second filter element assembly has the same structure as the first filter element assembly, except that there is no pressureless chamber above the hollow tube in the second filter element assembly.

[0021] This utility model also discloses a filtration method for any of the above-described perforated plate layered filters, comprising the following steps: S1. The material to be filtered enters the filter from the feed inlet 11 of the machine body 1; S2. The material is filtered through the filter assembly and the filtrate is discharged through the filtrate outlet. At this time, the filtrate will be filtered out from the filter element body, the gap between the filter element body and the hollow tube and the inside of the hollow tube, and will flow out from the filtrate outlet 141 after passing through the first pipe 13 and the second pipe 14.

[0022] S3. After filtration in S2 is completed, close the valve on the second pipe 14 and open the positive air inlet 151 to allow gas to enter for the second stage of filtration. At this time, since there is no pressure chamber, a siphon effect will occur when the gas enters the machine body, and the second stage of filtration will take place inside the machine body. The filtrate will then re-enter the first pipe 14 through the first central tube in the first filter element assembly 22 and flow out from the filtrate outlet until the second stage of re-filtration is completed. After repeated verification, after the material in the machine body 1 undergoes the second stage of filtration, the liquid in the machine body can be kept below the second filter element assembly and at the lower tail section of the first filter element assembly, greatly improving the filtration effect.

[0023] S4. After the S3 operation is completed, close the valve at the filter liquid port, perform backwashing and backflushing operations as usual, and then open the slag discharge port to discharge slag 12.

[0024] In the structure of this utility model, during the initial stage of filtration, both the first and second pipes are in the state of filtrate outflow. After filtration, when ventilation is initiated, the second stage begins. At this time, due to the absence of a pressure chamber in the first pipe path, a pressure difference is generated, and the filtrate inside the machine body flows through the first central pipe in the first filter element assembly, through the pressure chamber, and finally out through the first pipe.

[0025] The terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" used in this document to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the purpose of facilitating and simplifying the description of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A perforated plate type stratified filter, characterized in that: include The machine body has a feed inlet on its lower side and a slag discharge outlet at its bottom. The filter assembly includes a perforated plate located in the upper part of the machine body and filter element assemblies vertically and evenly distributed on the perforated plate via connecting joints; the filter assembly is connected to a filtrate outlet located outside the machine body via a pipe; The filter element assembly includes a first filter element assembly placed in the middle of the tube sheet and a second filter element assembly surrounding the first filter element assembly. The upper part of the first filter element assembly is connected to a pressureless chamber, and the upper part of the pressureless chamber is connected to the filtrate outlet through a pipe.

2. The perforated plate layered filter as described in claim 1, characterized in that: The length of the first filter element assembly is greater than the length of the second filter element assembly, and the lower end of the first filter element assembly extends downwards close to the slag discharge port of the filter.

3. The perforated plate layered filter as described in claim 1, characterized in that: The filter element assembly includes a filter element body and a hollow tube placed inside the filter element body. A gap is provided between the outer wall of the hollow tube and the inner wall of the filter element body, and a gap is provided between the bottom of the hollow tube and the bottom of the filter element body. The hollow tube is a connecting tube with openings at the top and bottom.

4. The perforated plate layered filter as described in claim 3, characterized in that: The first filter element assembly is connected to the pressureless chamber through the upper outlet of the hollow tube.

5. The perforated plate layered filter as described in claim 4, characterized in that: A sealing part is provided between the hollow tube and the filter element body, and the distance from the sealing part to the lower end of the filter element body is less than the distance from the sealing part to the upper end of the filter element body.

6. The perforated plate layered filter as described in claim 5, characterized in that: The machine body has a front blowing port, an air inlet, a filter liquid port, and a back blowing port on one side through a pipe. The different ports are connected and controlled by valves.

7. The perforated plate layered filter as described in claim 6, characterized in that: The upper end of the pressureless chamber is connected to the filter liquid outlet through a first pipe located on the top of the machine body. A valve is provided between the first pipe and the filter liquid outlet. The other end of the first pipe is connected to the backwash port. A second pipe and a third pipe are provided on the side of the machine body. The second pipe is connected to the filter liquid outlet through a valve. The third pipe is connected to the air inlet through a valve. A valve is connected in parallel between the second pipe and the third pipe.

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