A multi-stage filtration device for solvent production

Abstract

This utility model discloses a multi-stage filtration device for solvent production, relating to the field of solvent production. It includes a filter box with a discharge pipe fixedly connected to its bottom. The filter box has a slot inside, and a primary filter screen is installed inside. An elastic protrusion is fixedly connected to the outer wall of the primary filter screen. A connecting rod is fixedly connected to the bottom of the primary filter screen, and a secondary filter screen and a tertiary filter screen are fixedly connected to the outer wall of the connecting rod. By moving the primary filter screen into the filter box, the elastic protrusion engages and engages with the slot for positioning. By injecting aromatic solvent into the feed pipe, the aromatic solvent flows through the primary, secondary, and tertiary filters, allowing impurities to be filtered out. The filtered aromatic solvent is then discharged through the discharge pipe, achieving the effect of multi-stage filtration of impurities and residues in the aromatic solvent.

Description

Technical Field

[0001] This utility model relates to the field of solvent production, specifically a multi-stage filtration device for solvent production. Background Technology

[0002] Aromatic solvents are clear, colorless, and toxic liquids. They are mainly transported by tankers, railway tank cars, road tank cars, barges, and barrels. They are widely used as solvents for chronic paints and resins, ingredients for high-grade printing oils, and extractants in hydrogen peroxide production. During the production of aromatic solvents, after the various raw materials have undergone chemical reactions, a small amount of residue remains. Current solvent production filtration devices have a relatively simple structure, resulting in poor solvent filtration efficiency. Therefore, a multi-stage filtration device for solvent production is needed.

[0003] Existing filtration devices for solvent production are inconvenient for multi-stage filtration of impurities and residues in aromatic solvents, as well as for disassembling and cleaning the filter screens. They are also inconvenient for filtering harmful gases generated during solvent filtration. Therefore, there is an urgent need for a multi-stage filtration device for solvent production. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a multi-stage filtration device for solvent production, so as to solve the problems that existing filtration devices for solvent production are inconvenient for multi-stage filtration of impurities and residues in aromatic solvents, inconvenient for disassembling and cleaning the filter screen, and inconvenient for filtering harmful gases generated during solvent filtration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage filtration device for solvent production, comprising a filter box, a discharge pipe fixedly connected to the bottom of the filter box, a slot provided inside the filter box, a primary filter screen installed inside the filter box, an elastic protrusion fixedly connected to the outer wall of the primary filter screen, a connecting rod fixedly connected to the bottom of the primary filter screen, a secondary filter screen fixedly connected to the outer wall of the connecting rod, and a tertiary filter screen fixedly connected to the outer wall of the connecting rod.

[0006] A receiving plate is fixedly connected to the outer wall of the filter box. A limiting rod is movably connected inside the receiving plate. A threaded sleeve is movably connected to the outer wall of the limiting rod. A sealing cover is installed on the top of the filter box. A positioning block is fixedly connected to the outer wall of the sealing cover. A feed pipe is fixedly connected to the top of the sealing cover.

[0007] An exhaust pipe is fixedly connected to one side of the filter box, and an exhaust fan is fixedly connected to one end of the exhaust pipe. A connecting pipe is fixedly connected to the outer wall of the exhaust fan, and an exhaust gas treatment box is fixedly connected to one end of the connecting pipe. A first filter element, a second filter element, and a third filter element are installed inside the exhaust gas treatment box.

[0008] Preferably, the elastic protrusion is engaged with the filter box via a slot, and the elastic protrusion is symmetrically arranged with respect to the central axis of the primary filter screen.

[0009] Preferably, the primary filter and the secondary filter are arranged in parallel, and the secondary filter and the tertiary filter are arranged in parallel.

[0010] Preferably, the limiting rod is T-shaped, and the limiting rod and the receiving plate form a rotating structure.

[0011] Preferably, the limiting rod is movably connected to the positioning block, and the limiting rod is threadedly connected to the threaded sleeve.

[0012] Preferably, the first filter element is provided with coconut shell fiber inside, and the second filter element is provided with activated carbon inside.

[0013] Preferably, the third filter element is provided with filter cotton inside, and the third filter element is arranged in parallel with the second filter element.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of a filter box, discharge pipe, slot, primary filter screen, elastic protrusion, secondary filter screen, tertiary filter screen and feed pipe, moves the primary filter screen into the filter box, causing the elastic protrusion to engage and lock into the slot for limiting. By injecting aromatic solvent into the feed pipe, the aromatic solvent can flow through the primary, secondary and tertiary filter screens, allowing impurities to be filtered out. The filtered aromatic solvent is then discharged through the discharge pipe, achieving the effect of multi-stage filtration of impurities and residues in the aromatic solvent, thereby improving the quality of solvent filtration.

[0016] 2. This utility model, through the setting of a filter box, receiving plate, limiting rod, threaded sleeve, sealing cover plate and positioning block, allows the threaded sleeve to be disassembled from the limiting rod and the compression on the positioning block to be released by rotating the threaded sleeve. Pulling the limiting rod outward causes it to flip along the receiving plate, and pulling the sealing cover plate upward for disassembly, thereby disassembling the filter screen, which facilitates the disassembly and cleaning of the filter screen inside the filter box.

[0017] 3. This utility model, through the setting of a filter box, exhaust pipe, exhaust fan, connecting pipe, waste gas treatment box, first filter element, second filter element and third filter element, can extract harmful gases from the filter box by starting the exhaust fan, and discharge them into the waste gas treatment box through the connecting pipe. Under the multiple filtration of the first filter element, second filter element and third filter element, it can achieve the effect of filtering and adsorbing harmful gases in aromatic solvents. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram showing the structural breakdown of this utility model;

[0020] Figure 3 This is a three-dimensional view of the primary filter screen of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 5 This is a three-dimensional sectional view of the waste gas treatment box of this utility model.

[0023] In the diagram: 1. Filter box; 2. Discharge pipe; 3. Slot; 4. Primary filter screen; 5. Elastic protrusion; 6. Connecting rod; 7. Secondary filter screen; 8. Tertiary filter screen; 9. Receiving plate; 10. Limiting rod; 11. Threaded sleeve; 12. Sealing cover plate; 13. Positioning block; 14. Feed pipe; 15. Exhaust pipe; 16. Exhaust fan; 17. Connecting pipe; 18. Waste gas treatment box; 19. First filter element; 20. Second filter element; 21. Third filter element. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The embodiments of this utility model will be described below based on its overall structure.

[0026] Please see Figure 1-5A multi-stage filtration device for solvent production includes a filter box 1, a discharge pipe 2 fixedly connected to the bottom of the filter box 1, a slot 3 inside the filter box 1, a primary filter screen 4 installed inside the filter box 1, an elastic protrusion 5 fixedly connected to the outer wall of the primary filter screen 4, a connecting rod 6 fixedly connected to the bottom of the primary filter screen 4, a secondary filter screen 7 fixedly connected to the outer wall of the connecting rod 6, and a tertiary filter screen 8 fixedly connected to the outer wall of the connecting rod 6. The elastic protrusion 5 is engaged with the filter box 1 through the slot 3, and the elastic protrusion 5 is symmetrically arranged with the central axis of the primary filter screen 4. The primary filter screen 4 and the secondary filter screen 7 are arranged in parallel, and the secondary filter screen 7 and the tertiary filter screen 8 are arranged in parallel, which facilitates multi-stage filtration of impurities and residues in aromatic solvents.

[0027] Please see Figure 1-5 A multi-stage filtration device for solvent production is disclosed. A receiving plate 9 is fixedly connected to the outer wall of a filter box 1. A limiting rod 10 is movably connected inside the receiving plate 9. A threaded sleeve 11 is movably connected to the outer wall of the limiting rod 10. A sealing cover 12 is installed on the top of the filter box 1. A positioning block 13 is fixedly connected to the outer wall of the sealing cover 12. A feed pipe 14 is fixedly connected to the top of the sealing cover 12. The limiting rod 10 is T-shaped and forms a rotating structure with the receiving plate 9. The limiting rod 10 is movably connected to the positioning block 13 and threadedly connected to the threaded sleeve 11, which facilitates the disassembly and cleaning of the filter screen inside the filter box 1.

[0028] Please see Figure 1-5 A multi-stage filtration device for solvent production is disclosed. An exhaust pipe 15 is fixedly connected to one side of a filter box 1. An exhaust fan 16 is fixedly connected to one end of the exhaust pipe 15. A connecting pipe 17 is fixedly connected to the outer wall of the exhaust fan 16. An exhaust gas treatment box 18 is fixedly connected to one end of the connecting pipe 17. A first filter element 19, a second filter element 20, and a third filter element 21 are installed inside the exhaust gas treatment box 18. The first filter element 19 contains coconut fiber, the second filter element 20 contains activated carbon, and the third filter element 21 contains filter cotton. The third filter element 21 is arranged parallel to the second filter element 20, which facilitates the filtration and adsorption of harmful gases in aromatic solvents.

[0029] Working principle: In use, by moving the primary filter screen 4 into the filter box 1, the elastic protrusion 5 engages with the slot 3 for positioning. The sealing cover 12 is then closed. Aromatic solvent is injected into the feed pipe 14, allowing it to flow through the primary filter screen 4, secondary filter screen 7, and tertiary filter screen 8, filtering out impurities. The filtered aromatic solvent is then discharged through the discharge pipe 2, facilitating multi-stage filtration of impurities and residues in the aromatic solvent. By rotating the threaded sleeve 11, which is threadedly connected to the limiting rod 10, the threaded sleeve 11 can be disassembled from the limiting rod 10, releasing the pressure on the positioning block 13, and the limiting rod 10 can be pulled outwards. The limiting rod 10 is flipped along the receiving plate 9, and the sealing cover 12 is pulled upwards to disassemble it, thereby disassembling the filter screen. This facilitates the disassembly and cleaning of the filter screen inside the filter box 1. By starting the exhaust fan 16, the exhaust pipe 15 can extract the harmful gases from the filter box 1 and discharge them into the waste gas treatment box 18 through the connecting pipe 17. Under the multiple filtration of the first filter element 19, the second filter element 20, and the third filter element 21, the harmful gases in the aromatic solvent are effectively filtered and adsorbed. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage filtering device for solvent production, comprising a filtering tank (1), characterized in that: The bottom of the filter box (1) is fixedly connected to a discharge pipe (2), the inside of the filter box (1) is provided with a slot (3), a primary filter screen (4) is installed inside the filter box (1), an elastic protrusion (5) is fixedly connected to the outer wall of the primary filter screen (4), a connecting rod (6) is fixedly connected to the bottom of the primary filter screen (4), a secondary filter screen (7) is fixedly connected to the outer wall of the connecting rod (6), and a tertiary filter screen (8) is fixedly connected to the outer wall of the connecting rod (6). The outer wall of the filter box (1) is fixedly connected to a receiving plate (9), the inside of the receiving plate (9) is movably connected to a limiting rod (10), the outer wall of the limiting rod (10) is movably connected to a threaded sleeve (11), the top of the filter box (1) is installed with a sealing cover plate (12), the outer wall of the sealing cover plate (12) is fixedly connected to a positioning block (13), and the top of the sealing cover plate (12) is fixedly connected to a feed pipe (14). An exhaust pipe (15) is fixedly connected to one side of the filter box (1), and an exhaust fan (16) is fixedly connected to one end of the exhaust pipe (15). A connecting pipe (17) is fixedly connected to the outer wall of the exhaust fan (16), and an exhaust gas treatment box (18) is fixedly connected to one end of the connecting pipe (17). A first filter element (19) is installed inside the exhaust gas treatment box (18), a second filter element (20) is installed inside the exhaust gas treatment box (18), and a third filter element (21) is installed inside the exhaust gas treatment box (18).

2. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The elastic protrusion (5) is engaged with the filter box (1) through the slot (3), and the elastic protrusion (5) is symmetrically arranged with the central axis of the primary filter screen (4).

3. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The primary filter (4) is arranged in parallel with the secondary filter (7), and the secondary filter (7) is arranged in parallel with the tertiary filter (8).

4. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The limiting rod (10) is T-shaped, and the limiting rod (10) and the receiving plate (9) form a rotating structure.

5. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The limiting rod (10) is movably connected to the positioning block (13), and the limiting rod (10) is threadedly connected to the threaded sleeve (11).

6. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The first filter element (19) is provided with coconut shell fiber inside, and the second filter element (20) is provided with activated carbon inside.

7. A multi-stage filtration device for solvent production according to claim 1, characterized in that: The third filter element (21) is provided with filter cotton inside, and the third filter element (21) is arranged in parallel with the second filter element (20).

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