Waste filter cotton recycling device and waste filter cotton recycling method

Abstract

The invention relates to a waste filter cotton recycling device which comprises a conveying structure, an adjustable cotton crusher and a winnowing structure. The adjustable cotton crushing machine comprises a driving motor, a crushing roller, a cotton crushing shaft, cutting boards, cotton crushing cutters, scratching teeth and a shell, the driving motor is arranged outside the shell, the cotton crushing shaft is installed in the shell, one end of the cotton crushing shaft is connected with an output shaft of the driving motor, the crushing roller is arranged on the cotton crushing shaft in a sleeving mode, and the cutting boards are evenly arranged on the circumferential face of the crushing roller at equal intervals. The cotton crushing cutter and the scratching teeth are arranged on the cutter plate, a feeding port and a discharging port are formed in the shell, the output end of the conveying structure is connected with the feeding port, and the input end of the winnowing structure is connected with the discharging port. The waste filter cotton is recycled through the waste filter cotton recycling method, the utilization rate of the waste filter cotton is increased, the short fiber filter cotton screened out through detection is crushed and decomposed through the waste filter cotton recycling device, the short fiber filter cotton with the specific specification is prepared and used for composite board production, waste is reduced, and the process is sanitary and environmentally friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of filter cotton, and in particular to a waste filter cotton recycling device and a waste filter cotton utilization method. Background Art

[0002] The scope of filter cotton is relatively broad. Usually referred to as filter cotton, it refers to air filtration. According to the different materials, filter cotton can be divided into four types: synthetic fiber filter cotton, non-woven filter cotton, glass fiber filter cotton, activated carbon filter cotton. Filter cotton can also be divided into primary filter cotton and medium efficiency filter cotton according to the filtration efficiency. In the production process of filter cotton, some waste and scraps are often generated. These wastes are often discarded, resulting in a great waste of resources.

[0003] The Chinese patent with patent number: 202322742353.6 discloses a waste cotton recycling device, including a first conveyor belt, a chopped cotton box is provided on the right side of the first conveyor belt, a first motor is provided inside the chopped cotton box, a second conveyor belt is provided at the bottom of the chopped cotton box, an opener is provided on the right side of the second conveyor belt, and a protective box is provided on the right side of the chopped cotton box. Through the first conveyor belt, the chopped cotton box, the first motor, the licker-in roller, the second conveyor belt and the opener, the waste cotton is spread on the first conveyor belt during use, the first conveyor belt feeds the waste cotton into the chopped cotton box, the first motor inside the chopped cotton box drives the licker-in roller to rotate, and under the action of the licker-in roller, the waste cotton can be crushed and broken into a fiber state and fall onto the second conveyor belt, the second conveyor belt feeds the waste cotton fiber into the opener for opening, and then feeds the waste cotton fiber into the cotton bin after opening, thereby completing the waste cotton recovery, thereby the waste cotton can be recycled, the raw material cost is reduced, and the economic benefit is improved.

[0004] Those skilled in the art hope to propose a waste filter cotton recycling device and a waste filter cotton utilization method based on the existing technology. Summary of the invention

[0005] In view of the above problems existing in the prior art, the main purpose of the present invention is to provide a waste filter cotton recycling device and a waste filter cotton utilization method.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a waste filter cotton recycling device includes a conveying structure, an adjustable cotton shredder, and an air selection structure;

[0007] The adjustable cotton shredder includes a driving motor, a shredding drum, a shredding shaft, a knife plate, a shredding knife, scratching teeth, and a shell. The driving motor is arranged outside the shell, the shredding shaft is installed in the shell through a bearing seat, and one end of the shredding shaft extends out of the shell and is connected to the output shaft of the driving motor. The shredding drum is mounted on the shredding shaft, and the knife plate is evenly and equidistantly arranged on the circumferential surface of the shredding drum. The shredding knife and the scratching teeth are detachably and equidistantly arranged on the knife plate in an interval arrangement. A feed port and a discharge port are provided on the shell, the output end of the conveying structure is connected to the feed port, and the input end of the air selection structure is connected to the discharge port.

[0008] Furthermore, the cotton shredding knife includes a blade, a handle, and an external thread section. The blade is located at one end of the handle, and the width of the blade is less than or equal to the diameter of the handle and the blade as a whole is located within the extension line of the handle projection. The handle is a cylinder, and the external thread section is arranged at the end of the handle away from the blade. An internal screw hole is provided on the knife plate, and the cotton shredding knife is threadedly connected to the knife plate through the external thread section.

[0009] Furthermore, the grabbing tooth includes a tooth tip, a tooth shank, and an external thread section. The tooth tip is located at one end of the tooth shank, the tooth shank is a cylinder, the external thread section is arranged at the end of the tooth shank away from the tooth tip, an internal screw hole is provided on the blade, and the grabbing tooth is threadedly connected to the blade via the external thread section.

[0010] Furthermore, the knife plate is arranged on the circumferential surface of the crushing drum through a distance adjustment structure.

[0011] Furthermore, the distance adjustment structure includes adjustment holes arranged at both ends of the blade plate, distance adjustment screws slidably arranged in the adjustment holes, two locking nuts mounted on the distance adjustment screws and located between the blade plate and the crushing drum, the distance adjustment screws are arranged in the internal threaded holes of the crushing drum to connect the blade plate with the crushing drum, the locking nuts on the distance adjustment screws close to the direction of the crushing drum connect the distance adjustment screws with the crushing drum, and the other locking nuts on the distance adjustment screw connect the distance adjustment screws with the blade plate.

[0012] Furthermore, a cover plate is provided on the knife plate, and through holes are provided on the cover plate corresponding to the cotton shredding knife and the scratching teeth one by one. The cover plate is fixed on the knife plate in the form of the through holes passing through the cotton shredding knife and the scratching teeth.

[0013] Furthermore, the shell includes a bottom supporting shell and a top cover shell. The cotton chopped cotton shaft is arranged on the bottom supporting shell. The top cover shell is installed on the bearing seat of the bottom supporting shell and the cotton chopped cotton shaft. The top cover shell can be opened relative to the bottom supporting shell to expose the components in the shell for easy installation and disassembly.

[0014] Furthermore, an air blowing port is provided inside the shell for blowing the filter cotton off the scratching teeth, and the air blowing port is connected to an external fan through a pipeline.

[0015] The present invention also provides a method for utilizing waste filter cotton, which specifically comprises the following steps:

[0016] S1. Collect waste filter cotton for harmless cleaning and dehydration and drying;

[0017] S2. Conducting integrity testing and screening on the dried waste filter cotton;

[0018] S3. The long-fiber filter cotton with good integrity is fluffed and recycled;

[0019] S4. The short-fiber filter cotton with poor integrity screened out is crushed and decomposed using a waste filter cotton recycling device to prepare short-fiber filter cotton of specific specifications for use in composite board production.

[0020] Furthermore, the harmless cleaning and dehydration refers to: using an environmentally friendly cleaning agent such as environmentally friendly gun washing water, cleaning the waste filter cotton by soaking / showering and drum stirring and centrifugal dehydration, the environmentally friendly cleaning agent is prepared using a variety of environmentally friendly high-ignition point mixed solvents, the cleaning agent can be recycled after filtering, the residue after filtration is treated as paint waste residue, and after the cleaning agent has a low dissolving effect, it is recovered and distilled for purification, and then used again, and new environmentally friendly cleaning agents are regularly added to the circulation system for harmless recycling;

[0021] The drying treatment refers to: using a coating baking line to bake the waste filter cotton after centrifugal desolventization at a high temperature of 80°C to remove the volatile organic solvent remaining in the waste filter cotton, the hot air enters the condensation reflux device, the reflux liquid is collected and flows into the cleaning agent circulation system, and the waste gas enters the RTO treatment.

[0022] The beneficial effects of the present invention are: using the waste filter cotton utilization method of the present invention to recycle and reuse waste filter cotton significantly improves the utilization rate of waste filter cotton and improves economic benefits. By detecting and screening the waste filter cotton, firstly, the long-fiber filter cotton can be recovered for utilization, and then the short-fiber filter cotton detected and screened out is crushed and decomposed using a waste filter cotton recycling device to prepare short-fiber filter cotton of specific specifications, which is applied to the production of composite panels to reduce waste. Moreover, the process of collecting waste filter cotton for cleaning and dehydration and drying is a harmless treatment process, which is hygienic and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the adjustable cotton shredder of the present invention;

[0025] Figure 3 It is a detailed schematic diagram of the knife plate in the present invention;

[0026] Figure 4 It is a detailed schematic diagram of the crushing drum in the present invention;

[0027] Figure 5 It is a side schematic diagram of the distance adjustment structure in the present invention;

[0028] Figure 6 It is a structural schematic diagram of another cotton shredder and scratching teeth of the present invention that adopt a multi-row layout design;

[0029] Figure 7 The present invention is a process flow chart of the method for utilizing waste filter cotton.

[0030] Legend:

[0031] 1. Conveying structure; 2. Adjustable cotton shredder; 21. Driving motor; 22. Shredding drum; 23. Cotton shredding shaft; 24. Knife plate; 25. Cotton shredding knife; 251. Blade; 252. Knife handle; 26. Scratching teeth; 261. Tooth tip; 262. Tooth handle; 27. Shell; 271. Bottom support shell; 272. Top cover shell; 273. Air outlet; 3. Air selection structure; 4. Adjustable pitch structure; 41. Adjustment hole; 42. Adjustable pitch screw; 43. Locking nut; 5. Cover plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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, not all of the embodiments.

[0033] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0034] In the invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the invention.

[0035] like Figures 1 to 6 As shown, a waste filter cotton recycling device includes a conveying structure 1, an adjustable cotton shredder 2, and an air separation structure 3; the adjustable cotton shredder 2 includes a driving motor 21, a shredding drum 22, a shredding shaft 23, a knife plate 24, a shredding knife 25, a grabbing tooth 26, and a shell 27. The driving motor 21 is arranged outside the shell 27, and the shredding shaft 23 is installed in the shell 27 through a bearing seat, and one end thereof extends out of the shell 27 and is connected to the output shaft of the driving motor 21. The shredding drum 22 is sleeved on the shredding shaft 23, and the knife plate 24 is evenly and equidistantly arranged on the circumferential surface of the shredding drum 22. A plurality of shredding knives 25 and grabbing teeth 26 are detachably and equidistantly arranged on the knife plate 24 in an interval arrangement manner. A feed port and a discharge port are provided on the shell 27, and the output end of the conveying structure 1 is connected to the feed port, and the input end of the air separation structure 3 is connected to the discharge port.

[0036] like Figure 6 As shown, the cotton shredder 25 and the scratching teeth 26 can be arranged in one row or multiple rows at intervals.

[0037] The conveying structure 1 is used to collect the short-fiber filter cotton with poor integrity screened out by the waste filter cotton utilization method and deliver it into the shell 27 through the feed port of the adjustable cotton shredder 2.

[0038] The wind selection structure 3 is used to transport the short-fiber filter cotton that has been crushed and processed by the adjustable cotton shredder 2 to a storage place through wind suction for use in the production of composite panels at the rear end.

[0039] The feed inlet of the adjustable cotton shredder 2 can be provided with a downward pressure device to improve the inlet smoothness of the material.

[0040] like Figure 2 , 3As shown in , 4, the cotton shredding knife 25 includes a blade 251, a handle 252, and an external thread section. The blade 251 is located at one end of the handle 252, and the width of the blade 251 is less than or equal to the diameter of the handle 252, and the blade 251 is located as a whole within the extended line of the projection of the handle 252. The handle 252 is a cylinder, and the external thread section is arranged at one end of the handle 252 away from the blade 251. An internal screw hole is provided on the knife plate 24, and the cotton shredding knife 25 is threadedly connected to the knife plate 24 through the external thread section.

[0041] The cotton shredding knife 25 can change the extension length of the blade 251 by adjusting the depth of the inner screw hole screwed into the knife plate 24, thereby changing the length of the fiber to be shredded.

[0042] like Figure 2 , 3 As shown in Figures 4 and 5, the grabbing tooth 26 includes a tooth tip 261, a tooth shank 262, and an external thread section. The tooth tip 261 is located at one end of the tooth shank 262. The tooth shank 262 is a cylinder. The external thread section is arranged at the end of the tooth shank 262 away from the tooth tip 261. An internal screw hole is provided on the knife plate 24, and the grabbing tooth 26 is threadedly connected to the knife plate 24 through the external thread section.

[0043] The protruding length of the tooth tip 261 of the grabbing tooth 26 can be changed by adjusting the depth of the inner screw hole on the blade 24 into which the grabbing tooth 26 is screwed.

[0044] The knife plate 24 is arranged on the circumferential surface of the crushing drum 22 through the distance adjustment structure 4 .

[0045] like Figure 4 , 5 As shown, the distance adjustment structure 4 includes adjustment holes 41 arranged at both ends of the knife plate 24, a distance adjustment screw 42 slidably arranged in the adjustment hole 41, and two locking nuts 43 which are sleeved on the distance adjustment screw 42 and located between the knife plate 24 and the crushing drum 22. The distance adjustment screw 42 is arranged in the internal threaded hole of the crushing drum 22 to connect the knife plate 24 with the crushing drum 22. The locking nut 43 on the distance adjustment screw 42 close to the crushing drum 22 connects the distance adjustment screw 42 with the crushing drum 22, and the other locking nut 43 on the distance adjustment screw 42 connects the distance adjustment screw 42 with the knife plate 24.

[0046] The adjustment hole 41 may be a through hole provided at both ends of the blade plate 24 or a U-shaped notch groove.

[0047] The distance adjusting screw 42 can be a hexagon socket screw, a slotted screw or a cross head screw.

[0048] like Figure 3 , 5As shown, a cover plate 5 is provided on the knife plate 24, and through holes are provided on the cover plate 5 corresponding to the cotton shredding knife 25 and the scratching teeth 26. The cover plate 5 is fixed on the knife plate 24 in the form of the through holes passing through the cotton shredding knife 25 and the scratching teeth 26. The cover plate 5 is provided with mounting holes, and the knife plate 24 is correspondingly provided with mounting screw holes. The cover plate 5 is fixed to the knife plate 24 by screwing screws with the mounting screw holes.

[0049] like Figure 1 , 2 As shown, the shell 27 includes a bottom supporting shell 271 and a top cover shell 272. The cotton chopped cotton shaft 23 is arranged on the bottom supporting shell 271. The top cover shell 272 is covered on the bottom supporting shell 271 and the bearing seat of the cotton chopped cotton shaft 23. The top cover shell 272 can be opened relative to the bottom supporting shell 271 to expose the components in the shell 27 for easy installation and disassembly.

[0050] The shell 27 is provided with a blowing port 273 for blowing the filter cotton off the scratching teeth 26, and the blowing port 273 is connected to an external fan through a pipeline.

[0051] The air outlet 273 blows air downward to blow down the short fibers hanging on the scratching teeth 26, and the short fibers are collected and transferred to the air selection structure 3 through the circulating air to screen out the short fiber filter cotton. The circulating air is filtered through the filter bag and then recirculated into the shell 27.

[0052] like Figure 7 As shown, the present invention also discloses a method for utilizing waste filter cotton based on the waste filter cotton recycling device, comprising the following steps:

[0053] S1. Collect waste filter cotton for harmless cleaning and dehydration and drying;

[0054] S2. Conducting integrity testing and screening on the dried waste filter cotton;

[0055] S3. The long-fiber filter cotton with good integrity is fluffed and recycled;

[0056] S4. The short-fiber filter cotton with poor integrity screened out is crushed and decomposed using a waste filter cotton recycling device to prepare short-fiber filter cotton of specific specifications for use in composite board production.

[0057] Among them, the harmless cleaning and dehydration described in step S1 refers to: using an environmentally friendly cleaning agent such as environmentally friendly gun washing water, cleaning the waste filter cotton by soaking / showering and drum stirring and centrifugal dehydration, the environmentally friendly cleaning agent is prepared using a variety of environmentally friendly high-ignition point mixed solvents, the cleaning agent can be recycled after filtering, the residue after filtration is treated as paint waste residue, and after the cleaning agent has a low dissolving effect, it is recovered and distilled and purified, and continued to be used, and new environmentally friendly cleaning agents are regularly added to the circulation system for harmless recycling;

[0058] The drying treatment refers to: using a coating baking line to bake the waste filter cotton after centrifugal desolventization at a high temperature of 80°C to remove the volatile organic solvent remaining in the waste filter cotton, the hot air enters the condensation reflux device, the reflux liquid is collected and flows into the cleaning agent circulation system, and the waste gas enters the RTO treatment.

[0059] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waste filter cotton recycling device, characterized in that: It includes a conveying structure, an adjustable cotton shredder, and an air separation structure; the adjustable cotton shredder includes a driving motor, a shredding drum, a cotton shredding shaft, a knife plate, a cotton shredding knife, scratching teeth, and a shell. The driving motor is arranged outside the shell, and the cotton shredding shaft is installed in the shell through a bearing seat, and one end of the cotton shredding shaft extends out of the shell and is connected to the output shaft of the driving motor. The shredding drum is sleeved on the cotton shredding shaft, and the knife plate is evenly and equidistantly arranged on the circumferential surface of the shredding drum. The cotton shredding knife and the scratching teeth are detachably and equidistantly arranged on the knife plate in an interval arrangement. A feed port and a discharge port are provided on the shell, and the output end of the conveying structure is connected to the feed port, and the input end of the air separation structure is connected to the discharge port.

2. The waste filter cotton recycling device according to claim 1, characterized in that: The cotton shredding knife comprises a blade, a handle, and an external thread section. The blade is located at one end of the handle, and the width of the blade is less than or equal to the diameter of the handle and the blade as a whole is located within the range of the extended line of the handle projection. The handle is a cylinder, and the external thread section is arranged at the end of the handle away from the blade. An internal screw hole is arranged on the knife plate, and the cotton shredding knife is threadedly connected to the knife plate through the external thread section.

3. The waste filter cotton recycling device according to claim 1, characterized in that: The grabbing tooth includes a tooth tip, a tooth shank, and an external thread section. The tooth tip is located at one end of the tooth shank, the tooth shank is a cylinder, the external thread section is arranged at the end of the tooth shank away from the tooth tip, an internal screw hole is arranged on the knife plate, and the grabbing tooth is threadedly connected to the knife plate through the external thread section.

4. The waste filter cotton recycling device according to claim 1, characterized in that: The knife plate is arranged on the circumferential surface of the crushing drum through a distance adjustment structure.

5. The waste filter cotton recycling device according to claim 4, characterized in that: The distance adjustment structure includes adjustment holes arranged at both ends of the blade plate, distance adjustment screws slidably arranged in the adjustment holes, and two locking nuts mounted on the distance adjustment screws and located between the blade plate and the crushing drum. The distance adjustment screws are arranged in the internal threaded holes of the crushing drum to connect the blade plate with the crushing drum. The locking nuts on the distance adjustment screws close to the crushing drum direction connect the distance adjustment screws with the crushing drum and are fastened. The other locking nuts on the distance adjustment screws connect the distance adjustment screws with the blade plate and are fastened.

6. The waste filter cotton recycling device according to claim 1, characterized in that: The shell comprises a bottom supporting shell and a top covering shell. The chopped cotton shaft is arranged on the bottom supporting shell. The top covering shell cover is mounted on the bottom supporting shell and the bearing seat of the chopped cotton shaft. The top covering shell can be opened relative to the bottom supporting shell to expose the components in the shell for easy installation and disassembly.

7. The waste filter cotton recycling device according to claim 1, characterized in that: An air blowing port for blowing the filter cotton off the scratching teeth is arranged inside the shell, and the air blowing port is connected to an external fan through a pipeline.

8. The waste filter cotton recycling device according to any one of claims 1 to 7, characterized in that: The knife plate is provided with a cover plate, and through holes are provided on the cover plate corresponding to the cotton shredding knife and the scratching teeth one by one. The cover plate is fixedly arranged on the knife plate in the form of the through holes passing through the cotton shredding knife and the scratching teeth.

9. A method for utilizing waste filter cotton, characterized in that: The following steps are involved: S1. Collect waste filter cotton for harmless cleaning and dehydration and drying; S2. Conducting integrity testing and screening on the dried waste filter cotton; S3. The long-fiber filter cotton with good integrity is fluffed and recycled; S4. The short-fiber filter cotton with poor integrity screened out is crushed and decomposed using a waste filter cotton recycling device to prepare short-fiber filter cotton of specific specifications for use in composite board production.

10. The method for utilizing waste filter cotton according to claim 9, characterized in that: The harmless cleaning and dehydration refers to: using an environmentally friendly cleaning agent such as environmentally friendly gun washing water, cleaning the waste filter cotton by soaking / showering and drum stirring and centrifugal dehydration, the environmentally friendly cleaning agent is prepared using a variety of environmentally friendly high-ignition point mixed solvents, the cleaning agent can be recycled after filtering, the residue after filtration is treated as paint waste residue, and after the cleaning agent has a low dissolving effect, it is recovered and distilled for purification, and then used again, and new environmentally friendly cleaning agents are regularly added to the circulation system for harmless recycling; The drying treatment refers to: using a coating baking line to bake the waste filter cotton after centrifugal desolventization at a high temperature of 80°C to remove the volatile organic solvent remaining in the waste filter cotton, the hot air enters the condensation reflux device, the reflux liquid is collected and flows into the cleaning agent circulation system, and the waste gas enters the RTO treatment.

Images