Residual liquid recovery device for DMAC (dimethylacetamide) production

Abstract

The utility model discloses a DMAC (dimethylacetamide) production residual liquid recovery device which comprises a bottom plate, supporting rods are symmetrically connected to the middle of the upper surface of the bottom plate, a waste liquid recovery box is fixedly connected to the tops of the supporting rods, a cleaning module is arranged on one side of the upper surface of the bottom plate, and the cleaning module comprises a cleaning liquid storage box fixedly connected to one side of the upper surface of the bottom plate. According to the cleaning device, the cleaning module is arranged, the inner wall of the waste liquid recycling box can be directly cleaned without disassembly, the high-pressure pump conveys cleaning liquid in the cleaning liquid storage box into the annular pipe through the high-pressure hose, the cleaning liquid in the cleaning liquid storage box is conveyed into the annular pipe through the cleaning liquid storage box, and the cleaning liquid in the cleaning liquid storage box is conveyed into the annular pipe through the high-pressure hose. The cleaning liquid circularly flows in the annular pipe and sprays and cleans the inner wall of the waste liquid recycling box through the spraying head, after cleaning is completed, the electromagnetic valve is opened, the cleaning liquid is discharged through the liquid outlet pipe, pollution caused by splashing of the dimethylacetamide waste liquid due to manual cleaning is avoided, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of residual liquid recovery devices for DMAC production, in particular to a residual liquid recovery device for DMAC production. Background Art

[0002] Dimethylacetamide, referred to as DMAC, is a commonly used non-protonic polar solvent. It is colorless, transparent and flammable. It can be mixed with organic solvents such as water, alcohol, ether, ester, benzene, chloroform and aromatic compounds. Dimethylacetamide is widely used, especially its strong solubility for polymers, which makes it widely used in the production of polymer spinning, fiber forming or hollow fiber membrane preparation processes. For example, in the production process of polyurethane and polyimide, the large-scale use of dimethylacetamide will bring some environmental problems, especially in the polymer spinning, pharmaceutical pesticide and coating industries, which will produce a large amount of dimethylacetamide wastewater solution.

[0003] At present, after the use of the residual liquid recovery device of the traditional DMAC production is completed, a large amount of dimethylacetamide waste liquid will adhere to the inner wall of the waste liquid recovery box, and the inside of the waste liquid recovery box needs to be cleaned regularly. The current existing cleaning method is to design the waste liquid recovery box to be detachable to facilitate the cleaning of the inside of the waste liquid recovery box. However, since the dimethylacetamide waste liquid contains harmful substances, the manual disassembly and cleaning method will splash and cause environmental pollution, thereby resulting in a certain degree of limitation in the practicability of the device. Utility Model Content

[0004] The utility model aims to provide a residual liquid recovery device for DMAC production, so as to solve the problem that the dimethylacetamide waste liquid in the above-mentioned background technology contains harmful substances, and the manual disassembly and cleaning method will splash and cause environmental pollution, and the practicality is limited.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a residual liquid recovery device produced by DMAC, comprising a bottom plate, a support rod symmetrically connected to the middle of the upper surface of the bottom plate, a waste liquid recovery box fixedly connected to the top of the support rod, a cleaning module arranged on one side of the upper surface of the bottom plate, the cleaning module comprising a cleaning liquid storage box fixedly connected to one side of the upper surface of the bottom plate, a high-pressure pump arranged on the upper surface of the cleaning liquid storage box, a high-pressure hose arranged at the water outlet position of the high-pressure pump, an annular tube fixedly connected to the top of the high-pressure hose, the inner wall of the annular tube fixedly connected to the outer wall of the waste liquid recovery box through a connecting rod, a spray head arranged between the inner side wall of the annular tube and the outer side wall of the waste liquid recovery box, a liquid outlet pipe fixedly connected to the lower surface of the waste liquid recovery box, and a solenoid valve arranged in the middle of the liquid outlet pipe.

[0006] Preferably, universal wheels are provided at the four corners of the bottom of the base plate, and a push rod is symmetrically connected to the other side of the upper surface of the base plate.

[0007] Preferably, a liquid inlet pipe is fixedly connected to one side of the upper surface of the waste liquid recovery box, and a filter box is fixedly connected to the top of the liquid inlet pipe.

[0008] Preferably, a box door is hinged on the front of the filter box, and three groups of filter plates are arranged in the inner cavity of the filter box.

[0009] Preferably, bolts are provided on one side of the front face of the box door, a mounting plate is fixedly connected to one side of the outer wall of the filter box, and the box door and the mounting plate are assembled by the bolts.

[0010] Preferably, a through-hole pipe is fixedly connected between the inner top wall and the inner bottom wall of the waste liquid recovery box, and a mounting block is fixedly connected to the top of the through-hole pipe.

[0011] Preferably, two groups of sponge cleaning blocks are arranged on the inner wall of the mounting block, a scale rod is slidably connected to the middle of the mounting block, and a floating ball is arranged at the bottom of the scale rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting up a cleaning module, the inner wall of the waste liquid recovery tank can be cleaned directly without disassembly. The high-pressure pump transports the cleaning liquid in the cleaning liquid storage tank to the annular pipe through a high-pressure hose. The cleaning liquid circulates in the annular pipe and sprays and cleans the inner wall of the waste liquid recovery tank through a spray head. After cleaning, the solenoid valve is opened to discharge the cleaning liquid through the liquid outlet pipe, avoiding the pollution caused by splashing of dimethylacetamide waste liquid due to manual cleaning, thereby improving the practicability of the device.

[0014] 2. A sponge cleaning block is provided to clean the dimethylacetamide waste liquid attached to the surface of the scale rod. The dimethylacetamide waste liquid is collected in the inner cavity of the bottom plate and flows into the through-hole tube. As the liquid level rises, the floating ball floats up to drive the scale rod up, so that the capacity of the waste liquid can be observed in real time. Since a certain amount of dimethylacetamide waste liquid will not adhere to the scale rod when it floats up, two sponge cleaning blocks are provided in the inner cavity of the mounting block. When the scale rod floats up, the sponge cleaning block can clean and absorb the dimethylacetamide waste liquid attached to the surface of the scale rod, thereby avoiding secondary pollution and further improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front schematic diagram of a three-dimensional structure provided by the utility model;

[0016] Figure 2 A side schematic diagram of a three-dimensional structure provided by the utility model;

[0017] Figure 3 A schematic diagram of the interior of the three-dimensional structure provided by the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the filter box provided by the utility model;

[0019] Figure 5 The utility model provides Figure 3 A schematic diagram of the structure enlargement in the middle;

[0020] In the figure: 1. bottom plate; 2. support rod; 3. waste liquid recovery box; 4. cleaning liquid storage box; 5. high-pressure pump; 6. high-pressure hose; 7. annular pipe; 8. connecting rod; 9. sprinkler head; 10. liquid outlet pipe; 11. solenoid valve; 12. universal wheel; 13. liquid inlet pipe; 14. filter box; 15. box door; 16. mounting block; 17. scale rod; 18. push rod; 19. filter plate; 20. through-hole pipe; 21. sponge cleaning block; 22. bolt; 23. mounting plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Please refer to Figures 1 to 3A residual liquid recovery device produced by DMAC can directly clean the inner wall of a waste liquid recovery box without disassembly, including a bottom plate 1, a support rod 2 is symmetrically connected to the middle of the upper surface of the bottom plate 1, a waste liquid recovery box 3 is fixedly connected to the top of the support rod 2, a cleaning module is arranged on one side of the upper surface of the bottom plate 1, and the cleaning module includes a cleaning liquid storage box 4 fixedly connected to one side of the upper surface of the bottom plate 1, a high-pressure pump 5 is arranged on the upper surface of the cleaning liquid storage box 4, a high-pressure hose 6 is arranged at the water outlet position of the high-pressure pump 5, a ring pipe 7 is fixedly connected to the top of the high-pressure hose 6, and the inner wall of the ring pipe 7 is fixedly connected to the outer wall of the waste liquid recovery box 3 through a connecting rod 8. The waste liquid recovery tank 3 is fixedly connected, a spray head 9 is arranged between the inner wall of the annular tube 7 and the outer wall of the waste liquid recovery tank 3, a liquid outlet pipe 10 is fixedly connected to the lower surface of the waste liquid recovery tank 3, and a solenoid valve 11 is arranged in the middle of the liquid outlet pipe 10. The high-pressure pump 5 transports the cleaning liquid in the cleaning liquid storage tank 4 to the annular tube 7 via the high-pressure hose 6. The cleaning liquid circulates in the annular tube 7 and sprays and cleans the inner wall of the waste liquid recovery tank through the spray head 9. After cleaning, the solenoid valve 11 is opened to discharge the cleaning liquid through the liquid outlet pipe 10, thereby avoiding the pollution caused by splashing of dimethylacetamide waste liquid due to manual cleaning, and the practicability of the device is improved.

[0023] Please refer to Figures 1 to 5 , universal wheels 12 are provided at the four corners of the bottom of the bottom plate 1, and a push rod 18 is symmetrically connected to the other side of the upper surface of the bottom plate 1, a liquid inlet pipe 13 is fixedly connected to one side of the upper surface of the waste liquid recovery box 3, and a filter box 14 is fixedly connected to the top of the liquid inlet pipe 13, and a box door 15 is hinged on the front of the filter box 14. The inner cavity of the filter box 14 is provided with three groups of filter plates 19, and a bolt 22 is provided on one side of the front of the box door 15. A mounting plate 23 is fixedly connected to one side of the outer wall of the filter box 14, and the bolt 22 assembles the box door 15 and the mounting plate 23. A through-hole pipe 20 is fixedly connected between the inner top wall and the inner bottom wall of the waste liquid recovery box 3, and a mounting block 16 is fixedly connected to the top of the through-hole pipe 20. The inner wall of the mounting block 16 is provided with two groups of sea The scale rod 17 is slidably connected to the middle of the mounting block 16, and a floating ball is arranged at the bottom of the scale rod 17. The dimethylacetamide waste liquid is collected in the inner cavity of the bottom plate 1, and the dimethylacetamide waste liquid will flow into the through-hole tube 20. As the liquid level rises, the floating ball floats up and drives the scale rod 17 to rise, so that the capacity of the waste liquid can be observed in real time. Since a certain amount of dimethylacetamide waste liquid will not adhere to the scale rod 17 when it floats up, two sponge cleaning blocks 21 are arranged in the inner cavity of the mounting block 16. When the scale rod 17 floats up, the sponge cleaning block 21 can clean and absorb the dimethylacetamide waste liquid attached to the surface of the scale rod 17 to avoid secondary pollution, and the practicability of the device is further improved.

[0024] Working principle: When in use, first push the push rod 18 to drive the universal wheel 12 to move, so as to move the device to the designated area, and assemble the hose, the filter box 14 and the waste liquid outlet, so that the waste liquid flows into the filter box 14 through the hose, and the impurities in the dimethylacetamide waste liquid are filtered through the three sets of filter plates 19. The filtered dimethylacetamide waste liquid flows into the bottom plate 1 through the liquid inlet pipe 13 for storage. With the increase of the liquid level, the floating ball floats up and drives the scale rod 17 to rise, so that the capacity of the waste liquid can be observed in real time. Since a certain amount of dimethylacetamide waste liquid will not be attached when the scale rod 17 floats up, two sponge cleaning blocks 21 are set in the inner cavity of the mounting block 16, and the scale rod 17 is used to measure the volume of the waste liquid. When the scale rod 17 floats up, the sponge cleaning block 21 can clean and absorb the dimethylacetamide waste liquid attached to the surface of the scale rod 17 to avoid secondary pollution. The high-pressure pump 5 transports the cleaning liquid in the cleaning liquid storage tank 4 to the annular tube 7 via the high-pressure hose 6. The cleaning liquid circulates in the annular tube 7 and sprays and cleans the inner wall of the waste liquid recovery tank through the spray head 9. After cleaning, the solenoid valve 11 is opened to discharge the cleaning liquid through the liquid outlet pipe 10, avoiding the splashing of dimethylacetamide waste liquid and causing pollution caused by manual cleaning. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A residual liquid recovery device for DMAC production, comprising a bottom plate (1), characterized in that: A support rod (2) is symmetrically connected to the middle of the upper surface of the base plate (1), and a waste liquid recovery box (3) is fixedly connected to the top of the support rod (2). A cleaning module is arranged on one side of the upper surface of the base plate (1), and the cleaning module comprises a cleaning liquid storage box (4) fixedly connected to one side of the upper surface of the base plate (1). A high-pressure pump (5) is arranged on the upper surface of the cleaning liquid storage box (4), and a high-pressure hose (6) is arranged at the water outlet position of the high-pressure pump (5). An annular tube (7) is fixedly connected to the top of the high-pressure hose (6), and the inner wall of the annular tube (7) is fixedly connected to the outer wall of the waste liquid recovery box (3) through a connecting rod (8). A spray head (9) is arranged between the inner side wall of the annular tube (7) and the outer side wall of the waste liquid recovery box (3). A liquid outlet pipe (10) is fixedly connected to the lower surface of the waste liquid recovery box (3), and a solenoid valve (11) is arranged in the middle of the liquid outlet pipe (10).

2. A residual liquid recovery device for DMAC production according to claim 1, characterized in that: Universal wheels (12) are arranged at the four corners of the bottom of the base plate (1), and a push rod (18) is symmetrically connected to the other side of the upper surface of the base plate (1).

3. A residual liquid recovery device for DMAC production according to claim 1, characterized in that: A liquid inlet pipe (13) is fixedly connected to one side of the upper surface of the waste liquid recovery box (3), and a filter box (14) is fixedly connected to the top of the liquid inlet pipe (13).

4. A residual liquid recovery device for DMAC production according to claim 3, characterized in that: A box door (15) is hinged on the front of the filter box (14), and the inner cavity of the filter box (14) is provided with three groups of filter plates (19).

5. A residual liquid recovery device for DMAC production according to claim 4, characterized in that: A bolt (22) is provided on one side of the front face of the box door (15), a mounting plate (23) is fixedly connected to one side of the outer wall of the filter box (14), and the bolt (22) assembles the box door (15) and the mounting plate (23).

6. A residual liquid recovery device for DMAC production according to claim 1, characterized in that: A through-hole pipe (20) is fixedly connected between the inner top wall and the inner bottom wall of the waste liquid recovery box (3), and a mounting block (16) is fixedly connected to the top of the through-hole pipe (20).

7. A residual liquid recovery device for DMAC production according to claim 6, characterized in that: The inner wall of the installation block (16) is provided with two groups of sponge cleaning blocks (21), the middle part of the installation block (16) is slidably connected with a scale rod (17), and the bottom of the scale rod (17) is provided with a floating ball.

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