Novel absorption tower for formaldehyde production

Abstract

The utility model discloses a novel absorption tower for formaldehyde production, which comprises a pre-filtering mechanism, an absorption tower body, a stirring mechanism, an activated carbon adsorption layer plate and an air extracting pump, the pre-filtering mechanism is positioned on the outer side of the absorption tower body and is connected with the bottom of the side wall of the absorption tower body through an air inlet pipe, and a liquid adding pipe is arranged in the middle of the side wall of the absorption tower body; a liquid discharging pipe is arranged at the bottom of the side wall of the absorption tower body, control valves are arranged on the liquid adding pipe and the liquid discharging pipe, an annular positioning plate is arranged on the inner wall of the upper part of the absorption tower body, a lower positioning groove is formed in the upper surface of the annular positioning plate, and a positioning bulge is arranged on the lower surface of the activated carbon adsorption layer plate; the activated carbon adsorption layer plate is clamped and mounted in the lower positioning groove through the positioning bulge. The utility model belongs to the technical field of formaldehyde production, and particularly provides a novel absorption tower for formaldehyde production, which is used for pre-filtering particulate matters in formaldehyde by arranging a pre-filtering mechanism and is convenient for conveniently dismounting and replacing a filter screen and an activated carbon adsorption plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of formaldehyde production, in particular to a novel absorption tower for formaldehyde production. Background Art

[0002] As people's living standards continue to improve, the requirements for air quality are getting higher and higher. The quality of air directly affects human health. Therefore, great attention has been paid to air purification. Among them, formaldehyde contained in the air is the most harmful to the human body. Purifying formaldehyde has always been a top priority, especially in formaldehyde production. The production of formaldehyde is also unavoidable. In response to this situation, many purification equipment have emerged, and the absorption tower is one of them.

[0003] Utility model patent application number CN202220756164.7 provides an absorption tower for formaldehyde production. This absorption tower achieves formaldehyde purification through the combination of an absorption liquid and an adsorption layer. However, formaldehyde carries some particulate matter, and the absorption tower does not disclose a filtration structure related to particulate matter. In addition, the formaldehyde gas adsorption layer is directly fixed to the absorption tower, making it difficult to regularly replace the formaldehyde gas adsorption layer. As a result, the absorption and filtration effect of the absorption tower deteriorates over time. Utility Model Content

[0004] In view of the above situation, in order to remedy the above existing defects, the utility model provides a new formaldehyde production absorption tower which pre-filters particulate matter in formaldehyde by setting a pre-filtering mechanism and facilitates the convenient disassembly and replacement of the filter screen and the activated carbon adsorption plate.

[0005] The utility model provides the following technical solutions: The utility model proposes a novel formaldehyde production absorption tower, comprising a pre-filtering mechanism, an absorption tower body, a stirring mechanism, an activated carbon adsorption layer plate and an air pump, wherein the pre-filtering mechanism is located outside the absorption tower body, and the pre-filtering mechanism is connected to the bottom of the side wall of the absorption tower body through an air inlet pipe, a liquid adding pipe is provided in the middle of the side wall of the absorption tower body, a liquid draining pipe is provided at the bottom of the side wall of the absorption tower body, control valves are provided on the liquid adding pipe and the liquid draining pipe, and an annular positioning plate is provided on the upper inner wall of the absorption tower body. A lower positioning groove is provided on the upper surface of the annular positioning plate, and a positioning protrusion is provided on the lower surface of the activated carbon adsorption layer plate. The activated carbon adsorption layer plate is installed in the lower positioning groove by engaging the positioning protrusion. The vacuum pump is fixed on the upper outer wall of the absorption tower body, and the air inlet of the vacuum pump is connected to the side wall of the absorption tower body through a pipe. The pipe of the air inlet of the vacuum pump is located above the activated carbon adsorption layer plate. The upper end of the absorption tower body is provided with a top plate via screws, and the stirring mechanism is arranged in the absorption tower body and close to the bottom wall of the absorption tower body.

[0006] In order to achieve pre-filtration of particulate matter in formaldehyde, the pre-filtration mechanism includes a filter box, a filter screen and a fixing component. A formaldehyde pipe is provided on one side wall of the filter box, and the formaldehyde pipe and the air inlet pipe are respectively arranged on the opposite side walls of the filter box. A T-shaped mounting groove is provided on the top wall of the filter box, and a mounting plate is provided on the upper end of the filter screen. The mounting plate is installed in the mounting groove, and a handle is provided on the upper surface of the mounting plate. The filter screen passes through the mounting groove and is installed in the filter box. A fixing cavity is provided on the top wall of the filter box, and a slide groove is provided on the top wall of the fixing cavity close to the mounting groove. The fixing component is provided in the fixing cavity, and the fixing component is slidably arranged in the slide groove.

[0007] Furthermore, the fixing assembly includes a sliding rod, a pushing spring, a sliding plate, a supporting plate, a fixed pressure rod, a fixed spring, a fixed pressure plate and a handle, the sliding rod is arranged between two opposite inner walls of the fixed cavity, the sliding plate is slidably arranged on the sliding rod, the pushing spring is sleeved on the sliding rod, the two ends of the pushing spring are respectively connected to the inner wall of the fixed cavity and the sliding plate, the supporting plate is vertically arranged on the upper end of the sliding plate, the fixed pressure rod is slidably arranged on the supporting plate, the fixed pressure plate and the handle are respectively arranged at the lower end and the upper end of the fixed pressure rod, the fixed spring is sleeved on the fixed pressure rod, and the two ends of the fixed spring are respectively connected to the supporting plate and the fixed pressure plate.

[0008] Furthermore, the stirring mechanism includes a stirring motor, a stirring shaft and a stirring blade. The stirring motor is fixed on the outer wall of the absorption tower body, the stirring shaft is rotatably arranged between the two opposite inner walls of the absorption tower body, the stirring shaft is connected to the output shaft of the stirring motor, and the stirring blade is fixed on the stirring shaft.

[0009] Preferably, the air inlet pipe passes through the side wall of the absorption tower body and extends into the absorption tower body. The part of the air inlet pipe located inside the absorption tower body is fixed on the inner bottom wall of the absorption tower body. A plurality of air inlet heads are evenly arranged on the air inlet pipe.

[0010] Furthermore, a vertical plate is provided on the upper surface of the activated carbon adsorption layer plate, an upper positioning groove is provided on the lower surface of the top plate, and the top end of the vertical plate is engaged in the upper positioning groove.

[0011] Preferably, a second handle is fixedly mounted on the upper end of the vertical plate.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows: The utility model proposes a new formaldehyde production absorption tower, which specifically has the following advantages:

[0013] (1) The particulate matter in the formaldehyde can be pre-filtered by setting the pre-filter mechanism, thereby improving the formaldehyde filtering effect and filtering efficiency by combining the absorption filtration of the absorption liquid and the filtration of the activated carbon adsorption layer;

[0014] (2) The setting of the fixing mechanism enables the filter to be conveniently disassembled and assembled, which is convenient for cleaning the filter. In addition, the positioning protrusion on the lower surface of the activated carbon adsorption layer plate cooperates with the lower positioning groove on the upper surface of the annular positioning plate to achieve convenient disassembly and installation of the activated carbon adsorption layer plate, thereby ensuring the formaldehyde filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of part A;

[0018] Figure 3 This is a schematic structural diagram of the pre-filtering mechanism of the present utility model;

[0019] Figure 4 for Figure 2 A partial enlarged view of part B.

[0020] Among them, 1. pre-filtration mechanism, 2. absorption tower body, 3. stirring mechanism, 4. activated carbon adsorption layer plate, 5. vacuum pump, 6. air inlet pipe, 7. liquid adding pipe, 8. discharge pipe, 9. annular positioning plate, 10. lower positioning groove, 11. positioning protrusion, 12. top plate, 13. filter box, 14. filter screen, 15. formaldehyde tube, 16. mounting plate, 17. fixed cavity, 18. slide groove, 19. slide rod, 20. push spring, 21. slide plate, 22. support plate, 23. fixed pressure rod, 24. fixed spring, 25. fixed pressure plate, 26. handle, 27. stirring motor, 28. stirring shaft, 29. stirring blade, 30. air inlet head, 31. vertical plate, 32. upper positioning groove, 33. handle one, 34. handle two. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1 As shown, this embodiment provides a new formaldehyde production absorption tower, including a pre-filtering mechanism 1, an absorption tower body 2, a stirring mechanism 3, an activated carbon adsorption layer plate 4 and an air pump 5. The pre-filtering mechanism 1 is located outside the absorption tower body 2, and the pre-filtering mechanism 1 is connected to the bottom of the side wall of the absorption tower body 2 through an air inlet pipe 6. A liquid adding pipe 7 is provided in the middle of the side wall of the absorption tower body 2, and a liquid discharge pipe 8 is provided at the bottom of the side wall of the absorption tower body 2. Formaldehyde absorption liquid can be injected into the absorption tower body 2 through the setting of the liquid adding pipe 7, and waste liquid can be discharged through the liquid discharge pipe 8. Control valves are provided on the liquid adding pipe 7 and the liquid discharge pipe 8. The closed filtration space inside the absorption tower body 2 is ensured by the setting of the control valve. An annular positioning plate 9 is provided on the upper inner wall of the absorption tower body 2, and a lower positioning groove 10 is provided on the upper surface of the annular positioning plate 9. A positioning protrusion 11 is provided on the lower surface of the activated carbon adsorption layer plate 4. The activated carbon adsorption layer plate 4 is positioned by the positioning protrusion 1 1 is snap-fitted and installed in the lower positioning groove 10, the air pump 5 is fixedly arranged on the upper outer wall of the absorption tower body 2, and the air inlet of the air pump 5 is connected to the side wall of the absorption tower body 2 through a pipe. The pipe of the air inlet of the air pump 5 is located above the activated carbon adsorption layer plate 4. Under the action of the air pump 5, the flow direction of formaldehyde in the absorption tower body 2 can be guided. The upper end of the absorption tower body 2 is connected by screws with a top plate 12. The top plate 12 can be removed by removing the screws, thereby facilitating the removal of the activated carbon adsorption layer plate 4. The stirring mechanism 3 is arranged in the absorption tower body 2 and is arranged near the bottom wall of the absorption tower body 2; the air inlet pipe 6 passes through the side wall of the absorption tower body 2 and extends into the absorption tower body 2. The part of the air inlet pipe 6 located in the absorption tower body 2 is fixedly arranged on the inner bottom wall of the absorption tower body 2. A plurality of groups of air inlet heads 30 are evenly arranged on the air inlet pipe 6. The arrangement of the plurality of groups of air inlet heads 30 can make the formaldehyde gas evenly enter the interior of the absorption tower body 2.

[0024] Specifically, see Figure 3 and Figure 4In this embodiment, the pre-filter mechanism 1 includes a filter box 13, a filter screen 14 and a fixing assembly. A formaldehyde pipe 15 is provided on one side wall of the filter box 13. The formaldehyde pipe 15 and the air inlet pipe 6 are respectively arranged on the opposite two side walls of the filter box 13. A T-shaped mounting groove is provided on the top wall of the filter box 13. A mounting plate 16 is provided on the upper end of the filter screen 14. The mounting plate 16 is installed in the mounting groove. A handle 33 is provided on the upper surface of the mounting plate 16. The filter screen 14 passes through the mounting groove and is installed in the filter box 13. A fixing cavity 17 is provided on the top wall of the filter box 13. A slide groove 18 is provided on the top wall of the fixing cavity 17 close to the side of the mounting groove. The fixing assembly is arranged in the fixing cavity 17. The fixing assembly is slidably arranged in the slide groove 18. When one end of the fixing assembly moves along the slide groove 18 to the top of the mounting plate 16, the mounting plate 16 can be fixed under the action of the fixing assembly; the fixing assembly includes a slide rod 19, a push spring The two ends of the fixing spring 24 are respectively connected to the support plate 22 and the fixing pressure plate 25. Under the action of the fixing spring 24, the fixing pressure plate 25 can be driven to press the mounting plate 16 downward, thereby stably installing the filter screen 14 in the filter box 13 to pre-filter the particulate matter in the formaldehyde.

[0025] Specifically, see Figure 1 In this embodiment, the stirring mechanism 3 includes a stirring motor 27, a stirring shaft 28 and a stirring blade 29. The stirring motor 27 is fixed on the outer wall of the absorption tower body 2, and the stirring shaft 28 is rotatably arranged between the two opposite inner walls of the absorption tower body 2. The stirring shaft 28 is connected to the output shaft of the stirring motor 27, and the stirring blade 29 is fixed on the stirring shaft 28. Under the action of the stirring blade 29, the formaldehyde absorption liquid can be stirred to prevent the formaldehyde absorption liquid from precipitating.

[0026] Specifically, see Figure 1 and Figure 2 In this embodiment, a vertical plate 31 is provided on the upper surface of the activated carbon adsorption layer plate 4, and an upper positioning groove 32 is provided on the lower surface of the top plate 12. The top end of the vertical plate 31 is engaged in the upper positioning groove 32; a handle 2 34 is fixedly installed on the upper end of the vertical plate 31 to facilitate applying force to the activated carbon filter layer plate and removing it from the absorption tower body 2.

[0027] When in use, formaldehyde enters the filter box 13 through the formaldehyde pipe 15, and the particulate matter in the formaldehyde is filtered out under the action of the filter screen 14. Under the action of the vacuum pump 5, the formaldehyde enters the absorption tower body 2 through the air inlet pipe 6. Under the action of multiple groups of air inlet heads 30, the formaldehyde enters the lower part of the absorption tower body 2 evenly, and after being filtered by the formaldehyde absorption liquid, it moves up and is filtered and discharged through the activated carbon adsorption layer plate 4; when the filter screen 14 needs to be replaced and cleaned, it is only necessary to pull the upper handle 26, the fixed spring 24 is compressed, and the fixed pressure rod 23 is brought into contact with the filter screen 14. The movable fixed pressure plate 25 is moved away from the upper surface of the mounting plate 16, and the slide plate 21 is pushed in the direction away from the upper surface of the mounting plate 16. The slide plate 21 moves along the slide rod 19, pushing the spring 20 to be compressed, and the mounting plate 16 can be lifted up by handle 1 33 to remove the filter screen 14 from the filter box 13; when the activated carbon adsorption layer plate 4 needs to be replaced, it is only necessary to unscrew the screws, remove the lower top plate 12, and lift the vertical plate 31 by handle 2 34. The vertical plate 31 can drive the activated carbon adsorption layer plate 4 to be removed from the annular positioning plate 9.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, material, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel formaldehyde absorption tower for production, comprising a pre-filtration mechanism, an absorption tower body, a stirring mechanism, an activated carbon adsorption layer plate, and an air pump, characterized in that: The pre-filter mechanism is located outside the absorption tower body, and the pre-filter mechanism is connected to the bottom of the side wall of the absorption tower body through an air inlet pipe. A liquid adding pipe is provided in the middle of the side wall of the absorption tower body, and a liquid discharge pipe is provided at the bottom of the side wall of the absorption tower body. A control valve is provided on both the liquid adding pipe and the liquid discharge pipe. An annular positioning plate is provided on the upper inner wall of the absorption tower body, and a lower positioning groove is provided on the upper surface of the annular positioning plate. A positioning protrusion is provided on the lower surface of the activated carbon adsorption layer plate, and the activated carbon adsorption layer plate is installed in the lower positioning groove by engaging with the positioning protrusion. The vacuum pump is fixed on the upper outer wall of the absorption tower body, and the air inlet of the vacuum pump is connected to the side wall of the absorption tower body through a pipe. The pipe of the air inlet of the vacuum pump is located above the activated carbon adsorption layer plate. The upper end of the absorption tower body is provided with a top plate by screw connection, and the stirring mechanism is arranged in the absorption tower body and close to the bottom wall of the absorption tower body.

2. A novel formaldehyde production absorption tower according to claim 1, characterized in that: The pre-filter mechanism includes a filter box, a filter screen and a fixing assembly. A formaldehyde pipe is provided on one side wall of the filter box. The formaldehyde pipe and the air inlet pipe are respectively arranged on the opposite side walls of the filter box. A T-shaped mounting groove is provided on the top wall of the filter box. A mounting plate is provided on the upper end of the filter screen. The mounting plate is installed in the mounting groove. A handle is provided on the upper surface of the mounting plate. The filter screen passes through the mounting groove and is installed in the filter box. A fixing cavity is provided on the top wall of the filter box. A sliding groove is provided on the top wall of the fixing cavity close to the mounting groove. The fixing assembly is provided in the fixing cavity, and the fixing assembly is slidably arranged in the sliding groove.

3. A novel formaldehyde production absorption tower according to claim 2, characterized in that: The fixing assembly includes a sliding rod, a pushing spring, a sliding plate, a supporting plate, a fixed pressure rod, a fixing spring, a fixed pressure plate and a handle. The sliding rod is arranged between two opposite inner walls of the fixed cavity, the sliding plate is slidably arranged on the sliding rod, the pushing spring is sleeved on the sliding rod, the two ends of the pushing spring are respectively connected to the inner wall of the fixed cavity and the sliding plate, the supporting plate is vertically arranged on the upper end of the sliding plate, the fixed pressure rod is slidably arranged on the supporting plate, the fixed pressure plate and the handle are respectively arranged at the lower end and the upper end of the fixed pressure rod, the fixing spring is sleeved on the fixed pressure rod, and the two ends of the fixing spring are respectively connected to the supporting plate and the fixed pressure plate.

4. A novel formaldehyde production absorption tower according to claim 1, characterized in that: The stirring mechanism includes a stirring motor, a stirring shaft and a stirring blade. The stirring motor is fixed on the outer wall of the absorption tower body, the stirring shaft is rotatably arranged between the two opposite inner walls of the absorption tower body, the stirring shaft is connected to the output shaft of the stirring motor, and the stirring blade is fixed on the stirring shaft.

5. A novel formaldehyde production absorption tower according to claim 1, characterized in that: The air inlet pipe passes through the side wall of the absorption tower body and extends into the absorption tower body. The portion of the air inlet pipe located inside the absorption tower body is fixed on the inner bottom wall of the absorption tower body. A plurality of air inlet heads are evenly arranged on the air inlet pipe.

6. A novel formaldehyde production absorption tower according to claim 1, characterized in that: A vertical plate is provided on the upper surface of the activated carbon adsorption layer plate, an upper positioning groove is provided on the lower surface of the top plate, and the top end of the vertical plate is engaged in the upper positioning groove.

7. A novel formaldehyde production absorption tower according to claim 6, characterized in that: A second handle is fixedly mounted on the upper end of the vertical plate.

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