Multi-stage filtering device

Abstract

The utility model relates to a multi-stage filtering device and belongs to the technical field of reaction kettles. Comprising a filter body, a first-stage filter screen and a second-stage filter screen are arranged in the filter body, so that an inner cavity of the filter body is divided into a first-stage filter cavity, a second-stage filter cavity and a clean material cavity, and a first-stage filter slag outlet and a second-stage filter slag outlet are formed in the side face of the filter body; the top of the filter body is connected with a material inlet pipe and a cleaning solvent outlet pipe, the material inlet pipe is provided with a material inlet valve, and the cleaning solvent outlet pipe is provided with a cleaning solvent outlet valve; the bottom of the filter body is connected with a common pipe, the common pipe is provided with a clean material outlet pipe and a cleaning solvent inlet pipe, the clean material outlet pipe is provided with a clean material outlet valve, and the cleaning solvent inlet pipe is provided with a cleaning solvent inlet valve. The device is simple in structure and convenient to remove slag, and the filtering efficiency and the slag removal effect are improved; materials attached to filter residues are removed, and the deslagging condition is improved.

Description

Technical Field

[0001] The utility model relates to a multi-stage filtering device, belonging to the technical field of reaction kettles. Background Art

[0002] In chemical production, due to the high temperature of the reactor wall, local overreaction forms scale. These scale blocks fall off, so that the product is often accompanied by solid blocks. These solid blocks are not dissolved in the solvent or the product, causing pipeline blockage, which is a great trouble to chemical production. In addition, chemical products are generally viscous liquids, and the products adhere to the solid blocks, making it difficult to remove the solid blocks.

[0003] In order to solve the above problems, a multi-stage filtering device with simple operation, convenient slag removal and obvious effect is urgently needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a multi-stage filtering device for the above-mentioned prior art, which has a simple structure, convenient slag removal and improves the material slag removal effect.

[0005] The utility model adopts the following technical scheme to solve the above-mentioned problems: a multi-stage filtering device, comprising a filter body, wherein a primary filter screen and a secondary filter screen are arranged up and down in the filter body, so that the inner cavity of the filter body is divided into a primary filter cavity, a secondary filter cavity and a cleaning material cavity, a primary filter outlet and a secondary filter outlet are provided on the side of the filter body, the primary filter outlet corresponds to the primary filter cavity, the secondary filter outlet corresponds to the secondary filter cavity, and outlet covers are provided on the primary filter outlet and the secondary filter outlet respectively; the top of the filter body is connected to a material inlet pipe and a cleaning solvent outlet pipe, the material inlet pipe is provided with a material inlet valve, and the cleaning solvent outlet pipe is provided with a cleaning solvent outlet valve; the bottom of the filter body is connected to a common pipe, the common pipe is provided with a cleaning material outlet pipe and a cleaning solvent inlet pipe, the cleaning material outlet pipe is provided with a cleaning material outlet valve, and the cleaning solvent inlet pipe is provided with a cleaning solvent inlet valve.

[0006] The filter body is provided with a primary filter cavity sight glass and a secondary filter cavity sight glass. The primary filter cavity sight glass is used to observe the amount of filter residue in the primary filter cavity, and the secondary filter cavity sight glass is used to observe the amount of filter residue in the secondary filter cavity.

[0007] The common pipe is also provided with a cleaning solvent drain pipe, and the cleaning solvent drain pipe is provided with a cleaning solvent drain valve.

[0008] The primary filter screen and the secondary filter screen are special-shaped structural parts.

[0009] The bottom of the primary filter screen and the bottom of the secondary filter screen are arranged to be inclined downward.

[0010] The first-stage filtering slag outlet and the second-stage filtering slag outlet are arranged inclined upwards respectively.

[0011] A primary filter chamber pressure gauge is provided in the primary filter chamber, a secondary filter chamber pressure gauge is provided in the secondary filter chamber, and a clean material chamber pressure gauge is provided in the clean material chamber.

[0012] Compared with the prior art, the utility model has the following advantages: a multi-stage filtering device, using a primary filter screen and a secondary filter screen to grade and filter the material, has a simple structure, is convenient for slag removal, and improves the filtering efficiency and slag removal effect. The filter residue is cleaned by a cleaning solvent for a long time to remove the material attached to the filter residue, thereby improving the slag discharge conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a multi-stage filtering device according to an embodiment of the utility model;

[0014] Figure 2 for Figure 1 Middle BB view;

[0015] Figure 3 for Figure 2 Medium AA view;

[0016] Figure 4 This is the pipeline connection diagram;

[0017] In the figure, 1 is the filter body, 2 is the primary filter screen, 2.1 is the primary filter cavity, 3 is the primary filter cavity sight glass, 4 is the primary filter outlet, 5 is the secondary filter screen, 5.1 is the secondary filter cavity, 6 is the secondary filter cavity sight glass, 7 is the secondary filter outlet, 8 is the cleaning solvent outlet, 9 is the material inlet, 10 is the common port, 11 is the primary filter cavity pressure gauge, 12 is the secondary filter cavity pressure gauge, 13 is the cleaning material cavity pressure gauge, 14 is the material inlet valve, 15 is the material inlet pipe, 16 is the cleaning solvent outlet valve, 17 is the cleaning solvent outlet pipe, 18 is the common pipe, 19 is the cleaning material outlet valve, 20 is the cleaning material outlet pipe, 21 is the cleaning solvent inlet valve, 22 is the cleaning solvent inlet pipe, 23 is the cleaning solvent drain valve, 24 is the cleaning solvent drain pipe, and 25 is the sight glass. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] like Figure 1 , 2As shown in Figures 3 and 4, a multi-stage filtering device in this embodiment includes a filter body 1, in which a primary filter screen 2 and a secondary filter screen 5 are arranged up and down, so that the inner cavity of the filter body 1 is divided into a primary filter cavity 2.1, a secondary filter cavity 5.1 and a cleaning material cavity. A square primary filter slag outlet 4 and a square secondary filter slag outlet 7 are provided on the side of the filter body 1. The primary filter slag outlet 4 corresponds to the primary filter cavity 2.1, and the secondary filter slag outlet 7 corresponds to the secondary filter cavity 5.1. Slag outlet covers are respectively provided on the primary filter slag outlet 4 and the secondary filter slag outlet 7. When the slag outlet covers are opened, the primary filter slag outlet and the secondary filter slag outlet are opened, which is convenient for slag discharge; when the slag outlet covers are closed, the primary filter slag outlet and the secondary filter slag outlet are closed, which is convenient for material filtering. A material inlet 9 and a cleaning solvent outlet 8 are provided on the top of the filter body 1. The material inlet 9 is connected to a material inlet pipe 15, and a material inlet valve 19 is provided on the material inlet pipe 15. The cleaning solvent outlet 8 is connected to the cleaning solvent outlet pipe 17, and the cleaning solvent outlet pipe 17 is provided with a cleaning solvent outlet valve 16. A common port 10 is provided at the bottom of the filter body 1, and the common port 10 is connected to a common pipe 18. The common pipe 18 has branch pipes: a cleaning material outlet pipe 20, a cleaning solvent inlet pipe 22, and a cleaning solvent drain pipe 24. A cleaning material outlet valve 19 is provided on the cleaning material outlet pipe 20, a cleaning solvent inlet valve 21 is provided on the cleaning solvent inlet pipe 22, and a cleaning solvent drain pipe 24 is provided with a cleaning solvent drain valve 23. During filtering, the material inlet valve 19 and the cleaning material outlet valve 19 are opened, and the cleaning solvent outlet valve 16, the cleaning solvent drain valve 23, and the cleaning solvent inlet valve 21 are closed. The material flows into the primary filter chamber 2.1, and the primary filter screen 2 performs primary filtration on the material. The primary filtrate is filtered from the primary filter screen 2 to the secondary filter chamber 5.1, and large scale is retained on the primary filter screen 2. The secondary filter screen 5 performs secondary filtration on the primary filtrate, and the clean material flows into the clean material cavity from the secondary filter screen, and the clean material is transported to the next working section through the clean material outlet pipe, and smaller scale blocks are retained on the secondary filter screen.

[0020] A viewing mirror 25 can be provided on the common pipe to observe whether the cleaning material in the common pipe is clean.

[0021] The primary filter and the secondary filter are special-shaped structural parts, which increase the effective filtering area.

[0022] The primary filtration and the secondary filtration are arranged in sections and are detachable, so that the primary filter and the secondary filter can be cleaned thoroughly.

[0023] The side of the filter body 1 is provided with a primary filter cavity sight glass 3 and a secondary filter cavity sight glass 6. Both the primary filter cavity sight glass 3 and the secondary filter cavity sight glass 6 are long plate structures. The primary filter cavity sight glass is used to observe the amount of filter residue in the primary filter cavity, and the secondary filter cavity sight glass is used to observe the amount of filter residue in the secondary filter cavity.

[0024] A primary filter chamber pressure gauge 11 is provided in the primary filter chamber 2.1, a secondary filter chamber pressure gauge 12 is provided in the secondary filter chamber 5.1, and a clean material chamber pressure gauge 13 is provided in the clean material chamber. When it is observed from the primary filter chamber sight glass and the secondary filter chamber sight glass that there is a lot of filter residue in the primary filter chamber and the secondary filter chamber, or when the clean material outlet flow is small, or when the pressure difference analysis is performed through the primary filter chamber pressure gauge, the secondary filter chamber pressure gauge, and the clean material chamber pressure gauge to determine that there is a lot of filter residue, the filter residue is cleaned.

[0025] When cleaning the filter residue, open the cleaning solvent inlet valve and the cleaning solvent outlet valve, and close the material inlet valve, the cleaning material outlet valve, and the cleaning solvent drain valve. The cleaning solvent enters the inner cavity of the filter body through the cleaning solvent inlet pipe and the common pipe, and circulates and cleans the filter residue until the material attached to the filter residue is cleaned. The cleaning solvent circulates and cleans the filter residue for a long time to remove the material attached to the filter residue, which is greatly beneficial to the slag discharge and improves the working conditions.

[0026] Drain the cleaning solvent: open the cleaning solvent drain valve and the cleaning solvent outlet valve, close the cleaning solvent inlet valve, the material inlet valve and the material outlet valve, and drain the residual solvent in the inner cavity of the filter body through the cleaning solvent outlet pipe and the cleaning solvent drain pipe.

[0027] When discharging the residue, open the primary filter residue outlet and the secondary filter residue outlet on the filter body, and use a wooden rake to rake the residue on the primary filter screen and the secondary filter screen out and bag them.

[0028] The bottom of the first-stage filter and the bottom of the second-stage filter are arranged to be inclined downward, and the angle between the bottom of the first-stage filter and the bottom of the second-stage filter and the horizontal plane is 4°, which is convenient for slag discharge.

[0029] The first-stage filter slag outlet and the second-stage filter slag outlet are arranged to be inclined upwards, respectively, and the angle between the two and the horizontal plane is 6°, thereby preventing the material and solvent from dripping onto the ground.

[0030] The present invention adopts a primary filter and a secondary filter for graded filtration, which has a simple structure, convenient slag removal, and improves the filtration efficiency and slag removal effect. The filter residue is cleaned by a cleaning solvent for a long time to remove the material attached to the filter residue, thereby improving the slag removal conditions.

[0031] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A multi-stage filtering device, characterized in that: The filter body comprises a primary filter screen and a secondary filter screen which are arranged up and down, so that the inner cavity of the filter body is divided into a primary filter cavity, a secondary filter cavity and a cleaning material cavity, and a primary filter outlet and a secondary filter outlet are provided on the side of the filter body, the primary filter outlet corresponds to the primary filter cavity, the secondary filter outlet corresponds to the secondary filter cavity, and outlet covers are provided on the primary filter outlet and the secondary filter outlet respectively; the top of the filter body is connected to a material inlet pipe and a cleaning solvent outlet pipe, the material inlet pipe is provided with a material inlet valve, and the cleaning solvent outlet pipe is provided with a cleaning solvent outlet valve; the bottom of the filter body is connected to a common pipe, the common pipe is provided with a cleaning material outlet pipe and a cleaning solvent inlet pipe, the cleaning material outlet pipe is provided with a cleaning material outlet valve, and the cleaning solvent inlet pipe is provided with a cleaning solvent inlet valve.

2. A multi-stage filtering device according to claim 1, characterized in that: The filter body is provided with a primary filter cavity sight glass and a secondary filter cavity sight glass. The primary filter cavity sight glass is used to observe the amount of filter residue in the primary filter cavity, and the secondary filter cavity sight glass is used to observe the amount of filter residue in the secondary filter cavity.

3. A multi-stage filtering device according to claim 1, characterized in that: The common pipe is also provided with a cleaning solvent drain pipe, and the cleaning solvent drain pipe is provided with a cleaning solvent drain valve.

4. A multi-stage filtering device according to claim 1, characterized in that: The primary filter screen and the secondary filter screen are special-shaped structural parts.

5. A multi-stage filtering device according to claim 1, characterized in that: The bottom of the primary filter screen and the bottom of the secondary filter screen are arranged to be inclined downward.

6. A multi-stage filtering device according to claim 1, characterized in that: The first-stage filtering slag outlet and the second-stage filtering slag outlet are arranged inclined upwards respectively.

7. A multi-stage filtering device according to claim 1, characterized in that: A primary filter chamber pressure gauge is provided in the primary filter chamber, a secondary filter chamber pressure gauge is provided in the secondary filter chamber, and a clean material chamber pressure gauge is provided in the clean material chamber.

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