Concentration treatment device for sodium nitrate wastewater in methanol production

Abstract

The utility model discloses a methanol production sodium nitrate wastewater concentration treatment device which comprises a filter box, a cover plate is arranged on the outer surface of the upper end of the filter box, a folding pipe is arranged in the middle of the outer surface of the upper end of the cover plate, a feeding pipe is arranged on the outer surface of the upper end of the folding pipe, and a cleaning mechanism is arranged on the outer surface of one side of the cover plate. A material guiding pipe is arranged on the outer surface of the lower end of the filtering box, and the cleaning mechanism comprises a first fixing plate, a second fixing plate, a first fixing bolt, a filtering net, a connecting frame, a first scraping plate, a second scraping plate, a rotating shaft, a protection frame, a motor, a fixing block and a mounting plate. According to the concentration treatment device for sodium nitrate wastewater in methanol production disclosed by the utility model, the inner wall of the filter screen is scraped by the first scraper and the second scraper, so that the influence of blockage of the filter screen on wastewater falling is reduced, the filtering speed is improved, the filter screen can be conveniently mounted, dismounted, cleaned and replaced, and a better use prospect is brought.

Description

Technical Field

[0001] The utility model relates to the field of methanol production, in particular to a sodium nitrate wastewater concentration treatment device for methanol production. Background Art

[0002] Methanol is an organic compound widely used in the industrial field. Sodium nitrate wastewater is produced during the production of methanol. Although the concentration of sodium nitrate wastewater is low, it will seriously pollute the soil and water environment if dumped directly. The sodium nitrate wastewater needs to be concentrated for recycling. Traditionally, the concentration treatment of sodium nitrate wastewater is mainly carried out by falling film evaporation device, which uses steam as a heat source and concentrates the sodium nitrate wastewater through a multi-stage falling film evaporator. In the prior art, a Chinese patent document with application number CN202120427587.X records a methanol production sodium nitrate wastewater concentration treatment device. The patent first filters the sodium nitrate wastewater through a filter screen and a filter box to remove suspended matter in the wastewater; the sodium nitrate wastewater solution is concentrated multiple times by connecting three-stage electrodialysis concentration mechanisms in series, thereby improving the recovery rate of sodium nitrate in the next step and reducing energy consumption. When the existing methanol production sodium nitrate wastewater concentration treatment device is filtering the waste, suspended matter is easy to clog the filter screen, affecting the passage of wastewater, thereby reducing production efficiency, and it is inconvenient to replace and clean the filter screen, which brings certain adverse effects to people's use process. For this reason, we propose a methanol production sodium nitrate wastewater concentration treatment device. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the shortcomings of the prior art, the utility model provides a methanol production sodium nitrate wastewater concentration treatment device, which has the advantages of scraping the inner wall of the filter screen by a first scraper and a second scraper, reducing the clogging of the filter screen and affecting the falling of wastewater, increasing the filtration speed, and being able to easily install and disassemble the filter screen, and conveniently clean and replace it, etc., which can effectively solve the problems in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a methanol production sodium nitrate wastewater concentration treatment device, including a filter box, the upper outer surface of the filter box is provided with a cover plate, the middle part of the upper outer surface of the cover plate is provided with a folding pipe, the upper outer surface of the folding pipe is provided with a feed pipe, one side outer surface of the cover plate is provided with a cleaning mechanism, the lower outer surface of the filter box is provided with a material guide pipe, the cleaning mechanism includes a first fixed plate, a second fixed plate, a first fixing bolt, a filter screen, a connecting frame, a first scraper, a second scraper, a rotating shaft, a protective frame, a motor, a fixed block and a mounting plate, and two groups of the first fixed plates are respectively fixedly installed in the middle of the outer surfaces on both sides of the cover plate.

[0007] Preferably, the two groups of the second fixing plates are respectively fixedly installed at the upper ends of the middle parts of the outer surfaces on both sides of the filter box, the first fixing bolt is located on the upper outer surface of the first fixing plate, the connecting frame is located at the lower end of the cover plate, the filter screen is located on the lower outer surface of the connecting frame, and the fixing block is located in the middle of the lower outer surface of the filter screen.

[0008] Preferably, the protective frame is located on the outer surface of the lower end of the fixed block, the rotating shaft is located in the middle of the fixed block, the motor is located at the lower end of the rotating shaft, the two groups of the first scrapers are respectively located at the upper ends of both sides of the outer wall of the rotating shaft, the second scraper is located on the outer surface of the upper end of the first scraper, the four groups of the mounting plates are respectively located around the outer wall of the connecting frame, and the second fixing bolt is located on the outer surface of the lower end of the mounting plate.

[0009] Preferably, the first fixing plate and the second fixing plate are fixedly connected by a first fixing bolt, and the mounting plate and the cover plate are fixedly connected by a second fixing bolt.

[0010] Preferably, a sealed bearing is provided between the rotating shaft and the fixed block, and the rotating shaft is rotatably connected to the fixed block via the sealed bearing.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the utility model provides a methanol production sodium nitrate wastewater concentration treatment device, which has the following beneficial effects:

[0013] 1. A methanol production sodium nitrate wastewater concentration treatment device scrapes the inner wall of the filter screen through the first scraper and the second scraper, reduces the blockage of the filter screen and affects the falling of wastewater, and improves the filtering speed.

[0014] 2. This methanol production sodium nitrate wastewater concentration treatment device can facilitate the installation and disassembly of the filter screen, and is convenient for cleaning and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a methanol production sodium nitrate wastewater concentration treatment device.

[0016] Figure 2 This is a front view analysis diagram of a methanol production sodium nitrate wastewater concentration treatment device of the utility model.

[0017] Figure 3 This is a structural diagram of a cover plate in a methanol production sodium nitrate wastewater concentration treatment device of the utility model.

[0018] Figure 4 This is a structural diagram of a connecting frame in a methanol production sodium nitrate wastewater concentration treatment device of the utility model.

[0019] In the figure: 1. filter box; 2. cover plate; 3. folding tube; 4. feed pipe; 5. guide tube; 6. cleaning mechanism; 7. first fixing plate; 8. second fixing plate; 9. first fixing bolt; 10. filter screen; 11. connecting frame; 12. first scraper; 13. second scraper; 14. rotating shaft; 15. protective frame; 16. motor; 17. fixing block; 18. mounting plate; 19. second fixing bolt. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] This embodiment is a device for concentrating and treating sodium nitrate wastewater from methanol production.

[0022] like Figure 1-4 As shown, it includes a filter box 1, a cover plate 2 is provided on the upper outer surface of the filter box 1, a folding tube 3 is provided in the middle of the upper outer surface of the cover plate 2, a feed pipe 4 is provided on the upper outer surface of the folding tube 3, a cleaning mechanism 6 is provided on the outer surface of one side of the cover plate 2, and a material guide pipe 5 is provided on the lower outer surface of the filter box 1. The cleaning mechanism 6 includes a first fixed plate 7, a second fixed plate 8, a first fixing bolt 9, a filter screen 10, a connecting frame 11, a first scraper 12, a second scraper 13, a rotating shaft 14, a protective frame 15, a motor 16, a fixed block 17 and a mounting plate 18. Two groups of first fixed plates 7 are fixedly installed in the middle of the outer surfaces of both sides of the cover plate 2 respectively.

[0023] The two sets of second fixing plates 8 are respectively fixedly installed at the upper ends of the middle parts of the outer surfaces of both sides of the filter box 1, the first fixing bolts 9 are located on the upper outer surface of the first fixing plate 7, the connecting frame 11 is located at the lower end of the cover plate 2, the filter screen 10 is located on the lower outer surface of the connecting frame 11, and the fixing block 17 is located in the middle of the lower outer surface of the filter screen 10; the protective frame 15 is located on the lower outer surface of the fixing block 17, the rotating shaft 14 is located in the middle of the fixing block 17, the motor 16 is located at the lower end of the rotating shaft 14, and the two sets of first scrapers 12 are respectively located on the rotating shaft 14 At the upper ends of both sides of the outer wall, the second scraper 13 is located on the upper outer surface of the first scraper 12, the four groups of mounting plates 18 are respectively located around the outer wall of the connecting frame 11, and the second fixing bolts 19 are located on the lower outer surface of the mounting plate 18; the first fixing plate 7 and the second fixing plate 8 are fixedly connected by the first fixing bolts 9, and the mounting plate 18 and the cover plate 2 are fixedly connected by the second fixing bolts 19; a sealed bearing is arranged between the rotating shaft 14 and the fixed block 17, and the rotating shaft 14 is rotatably connected to the fixed block 17 through the sealed bearing.

[0024] It should be noted that the utility model is a sodium nitrate wastewater concentration treatment device for methanol production. The wastewater is introduced into the connecting frame 11 through the feed pipe 4, and filtered under the action of the filter screen 10. The filtered wastewater falls into the concentration equipment under the action of the guide pipe 5 for treatment. The starter motor 16 drives the rotating shaft 14 to rotate and drives the first scraper 12 and the second scraper 13 to rotate. The inner wall of the filter screen 10 is scraped by the first scraper 12 and the second scraper 13 to reduce the blockage of the filter screen 10 and the influence of the wastewater falling. To improve the filtering speed, when the filter 10 needs to be taken out for cleaning after being used for a period of time, after closing the valve at one end of the feed pipe 4, turn the first fixing bolt 9, separate the first fixing plate 7 from the second fixing plate 8, lift the cover plate 2, compress the folding tube 3, and after raising the cover plate 2, separate the mounting plate 18 from the cover plate 2 at the lower end of the cover plate 2 through the second fixing bolt 19, then remove the connecting frame 11, and clean the inside of the filter 10, which can facilitate the installation and disassembly of the filter 10 and facilitate cleaning and replacement.

[0025] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A methanol production sodium nitrate wastewater concentration treatment device, comprising a filter box (1), characterized in that: The upper outer surface of the filter box (1) is provided with a cover plate (2), the middle part of the upper outer surface of the cover plate (2) is provided with a folding tube (3), the upper outer surface of the folding tube (3) is provided with a feed tube (4), the outer surface of one side of the cover plate (2) is provided with a cleaning mechanism (6), the lower outer surface of the filter box (1) is provided with a material guide tube (5), the cleaning mechanism (6) comprises a first fixing plate (7), a second fixing plate (8), a first fixing bolt (9), a filter screen (10), a connecting frame (11), a first scraper (12), a second scraper (13), a rotating shaft (14), a protective frame (15), a motor (16), a fixing block (17) and a mounting plate (18), and two groups of the first fixing plates (7) are respectively fixedly mounted on the middle parts of the outer surfaces of both sides of the cover plate (2).

2. A methanol production sodium nitrate wastewater concentration treatment device according to claim 1, characterized in that: The two groups of the second fixing plates (8) are respectively fixedly mounted on the upper ends of the middle parts of the outer surfaces of both sides of the filter box (1); the first fixing bolts (9) are located on the upper outer surface of the first fixing plate (7); the connecting frame (11) is located on the lower end of the cover plate (2); the filter screen (10) is located on the lower outer surface of the connecting frame (11); and the fixing block (17) is located in the middle part of the lower outer surface of the filter screen (10).

3. A methanol production sodium nitrate wastewater concentration treatment device according to claim 2, characterized in that: The protective frame (15) is located on the outer surface of the lower end of the fixed block (17), the rotating shaft (14) is located in the middle of the fixed block (17), the motor (16) is located at the lower end of the rotating shaft (14), the two groups of the first scrapers (12) are respectively located at the upper ends of the two sides of the outer wall of the rotating shaft (14), the second scraper (13) is located on the outer surface of the upper end of the first scraper (12), the four groups of the mounting plates (18) are respectively located around the outer wall of the connecting frame (11), and the second fixing bolt (19) is located on the outer surface of the lower end of the mounting plate (18).

4. A methanol production sodium nitrate wastewater concentration treatment device according to claim 3, characterized in that: The first fixing plate (7) and the second fixing plate (8) are fixedly connected via a first fixing bolt (9), and the mounting plate (18) and the cover plate (2) are fixedly connected via a second fixing bolt (19).

5. A methanol production sodium nitrate wastewater concentration treatment device according to claim 4, characterized in that: A sealed bearing is provided between the rotating shaft (14) and the fixed block (17), and the rotating shaft (14) is rotatably connected to the fixed block (17) via the sealed bearing.

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