KR102410479B1 - Non-woven fabric recycling device and recycling method - Google Patents

Abstract

Disclosed is a nonwoven recycling device. The nonwoven fabric recycling apparatus of the present invention comprises: a mixing tank in which the waste nonwoven fabric pulverized material is dispersed and mixed in water together with a filler to form a waste nonwoven fabric mixture; at least one filtering unit capable of receiving the waste nonwoven mixture from the mixing tank and filtering the waste nonwoven pulverized body of the closed nonwoven mixture based on a set size; at least one fixing agent adding unit for forming a raw material by supplying a fixing agent for agglomeration of the crushed waste non-woven fabric and the filler to the waste non-woven fabric mixture that has passed through the filtering part; And receiving the raw material to form a recycled nonwoven fabric, the filter body, and a raw material injection nozzle provided at the end of the raw material supply pipe to which the raw material is transferred and spraying the raw material into the filtering tank body, into the raw material supply pipe It is characterized in that it includes a strainer having a compressed air supply unit that provides compressed air to enable high-pressure injection of the raw material through the raw material injection nozzle. According to the present invention, since a nonwoven fabric recycled through a drainage process is obtained through a drainage process by adding a fixative to a nonwoven fabric mixture formed by mixing a waste nonwoven fabric pulverized body with a filler in water, and then supplying it to a sieve, the process is simpler than in the prior art and thus can reduce costs and improve productivity.

Description

Non-woven fabric recycling device and recycling method

The present invention relates to a nonwoven fabric recycling apparatus and recycling method capable of producing a recycled nonwoven fabric using a waste nonwoven fabric through a wet process and variably controlling the surface roughness of the recycled nonwoven fabric product.

In general, the types of nonwoven fabrics widely used in various industrial fields are also diverse. In general, such a nonwoven fabric forms a sheet-shaped web by tangling various fiber materials, such as natural or chemical, glass, etc., with each other without a certain direction, and then combines them with a chemical or physical method and stabilizes the paper or cloth. It is manufactured in the same form as For example, such a nonwoven fabric can take a variety of appearance, thickness, strength, weight and feel, and has sufficient elasticity to not cause wrinkles, as well as excellent heat retention, water absorption, water repellency, insulation, conductivity, and breathability. Therefore, it is widely used in various industries.

As a prior patent document related to the technology of producing recycled nonwovens using waste nonwovens, registered patent No. 10-0974173 discloses that the waste nonwovens are cut by a cutting device and cut to a certain size, and then the cut waste nonwovens are temporarily stored in a storage means. After leaving, the waste non-woven fabric is sprayed with air in a certain thickness and in a certain amount using an error-laid. A process for producing a recycled nonwoven fabric by applying pressure with a pressurizing means having a high temperature by using needle punching and pressing is described.

However, this conventional recycled non-woven fabric manufacturing technology tends to be reluctant to work because it not only deteriorates the working environment due to recycled short cut fibers, but also harms the health of workers by entering the respiratory tract.

Accordingly, the present applicant can not only recycle the nonwoven fabric through a wet process to solve this disadvantage, but also variably control the surface roughness of the manufactured recycled nonwoven fabric, so that the recycled nonwoven fabric of various specifications can meet various usage conditions We propose a recycling method of a new structure that can be easily manufactured.

Republic of Korea Patent Publication No. 10-0974173 (Announcement on Aug. 05, 2010)

The present invention has been devised to solve the above-mentioned conventional problems, and by recycling the nonwoven fabric by applying the wet process, it is possible to reduce the pollution of the working environment compared to the dry process, and by variably adjusting the surface roughness of the manufactured recycled nonwoven fabric. An object of the present invention is to provide a nonwoven fabric recycling apparatus and a recycling method that can easily manufacture recycled nonwoven fabrics of various specifications that can meet various usage conditions.

In addition, according to the present invention, a raw material composed of a mixture of a waste nonwoven fabric pulverized body, a filler, a fixing agent, and water is sprayed at high pressure so that a uniform spray can be made into a space where the recycled nonwoven fabric is formed, and eventually uniform in the space. Another object of the present invention is to provide a nonwoven fabric recycling apparatus and a recycling method capable of increasing the manufacturing efficiency of the recycled nonwoven fabric by dispersing the raw material and reducing the occurrence of defects.

According to one aspect of the present invention, the waste non-woven fabric pulverized body is dispersed and mixed in water together with a filler to form a blending tank to form a waste non-woven fabric mixture; at least one filtering unit capable of receiving the waste nonwoven mixture from the mixing tank and filtering the waste nonwoven pulverized body of the closed nonwoven mixture based on a set size; at least one fixing agent adding unit for forming a raw material by supplying a fixing agent for agglomeration of the crushed waste non-woven fabric and the filler to the waste non-woven fabric mixture that has passed through the filtering part; And receiving the raw material to form a recycled nonwoven fabric, the filter body, and a raw material injection nozzle provided at the end of the raw material supply pipe to which the raw material is transferred and spraying the raw material into the filtering tank body, into the raw material supply pipe There is provided a nonwoven recycling apparatus including a sieve having a compressed air supply unit that provides compressed air to enable high-pressure injection of raw materials through a raw material injection nozzle.

a flow meter provided on the raw material supply pipe to measure the flow rate of the raw material; and

The control unit may further include a control unit capable of controlling the operation of the compressed air supply unit according to the measured value of the flow meter to adjust the compressed air supply state to the raw material injection nozzle side.

The sieve includes: a sieve provided in the sieve body to pass water excluding the aggregate of the waste non-woven fabric pulverized body and the filler from the raw material; And it may include an aggregate conveying unit for laterally pressing the aggregate remaining on the upper part of the sieve and discharging to the side with respect to the sieve body.

The strainer body is provided with an outlet so that the aggregate is discharged laterally, and the aggregate transfer unit may include a push plate contactable with the aggregate, and an actuator for reciprocally moving the push plate toward the outlet.

It may further include a dust collector for removing dust generated in the mixing tank and around the mixing tank during the formation of the waste nonwoven mixture.

At least two or more of the at least one filtering unit are provided between the mixing tank and the fixing agent adding unit, and the set size of the waste nonwoven pulverized body filtered by each filtering unit is different from each other and can be variably adjusted. .

The filtering unit may include: a filtering chamber provided with a waste non-woven mixture supply port thereon; a filter provided to be replaceable in the filtering chamber and filtering the waste non-woven fabric pulverized body according to a set size; And it may include a stirrer for stirring the waste non-woven mixture accommodated in the filtering chamber.

According to another aspect of the present invention, there is provided a method comprising: (a) pulverizing a waste nonwoven fabric to obtain a pulverized waste nonwoven fabric; (b) a material mixing step of dispersing and mixing the pulverized waste nonwoven fabric together with a filler in water in a mixing tank to obtain a waste nonwoven fabric mixture; (c) a material filtering step of filtering the pulverized closed nonwoven fabric of the closed nonwoven fabric mixture based on a set size to separate the pulverized closed nonwoven fabric having a size larger than a set size and a pulverized waste nonwoven fabric smaller than a set size; (d) adding a fixing agent to form a raw material by supplying a fixing agent for agglomeration of the crushed waste nonwoven fabric and the filler to the waste nonwoven mixture of the waste nonwoven fabric having a size smaller than the set size, water, and a filler; and (e) using the raw material to form a recycled nonwoven fabric, but after the raw material is sprayed at high pressure like compressed air into the main body of a sieve equipped with a sieve, the aggregate of the remaining waste non-woven fabric pulverized body and filler except for the water There is provided a non-woven fabric recycling method comprising a recycled non-woven fabric forming step of vacuum dehydration in a state remaining on the sieve to form a recycled non-woven fabric.

In step (e), the flow rate of the raw material in the raw material supply pipe, which is the raw material transport path to the filter body, is measured, and the compressed air supply state for high-pressure injection of the raw material into the filter body is adjusted according to the flow rate measurement value. can

The step (e) comprises the steps of: (e1) pressing the aggregate remaining on the upper part of the sieve to the side and discharging it laterally with respect to the sieve body; (e2) dehydrating by compressing the aggregate discharged from the filter body; and (e3) drying the agglomerate that has undergone the step (e2) at a high temperature.

In step (b), the dust generated in the mixing tank and around the mixing tank in the process of forming the waste non-woven fabric mixture may be removed.

The step (c) includes: (c1) a first material filtering step of filtering and filtering the pulverized waste nonwoven fabric having a size greater than or equal to a first set size among the waste nonwoven fabric mixture of step (b); and (c2) a second material filtering step of filtering and filtering the pulverized waste nonwoven fabric having a size greater than or equal to a second set size among the waste nonwoven fabric mixture that has passed through step (c1), wherein the second set size may be smaller than the first set size. have.

According to the nonwoven fabric recycling apparatus and recycling method of the present invention described above, a fixing agent is added to a nonwoven fabric mixture formed by mixing a waste nonwoven fabric pulverized body with a filler in water, and then supplied to a sieve to produce a nonwoven recycled nonwoven fabric through a drainage process. Therefore, the process is simple compared to the prior art, and thus the cost can be reduced and the productivity can be improved.

In addition, the surface roughness of the recycled nonwoven fabric can be adjusted by filtering the waste nonwoven fabric pulverized body based on the set size before supplying the waste nonwoven fabric mixture to the sieve tank and manufacturing the recycled nonwoven fabric using the waste nonwoven fabric pulverized body having a set particle size.

In addition, the filter for filtering the waste non-woven fabric is installed so that it can be replaced, so when the set surface roughness of the recycled non-woven fabric, which is the final product, is changed, the filter can be replaced and used, so that the surface roughness of the recycled non-woven fabric can be easily and variably adjusted. Also, since the waste non-woven fabric pulverized body filtered by the filter of the filtering unit can be recycled, material waste can be minimized.

In addition, since the process of dispersing and mixing the waste nonwoven fabric pulverized body with the filler in water and removing the dust generated at the same time as the process is made, it is possible to prevent contamination in the workplace and deterioration of the health of the workers due to dust generation as much as possible.

In addition, compressed air is provided to the fuel injection nozzle to inject the fuel into the sieve at high pressure, so that the fuel is uniformly dispersed in the sieve, thereby increasing the manufacturing efficiency of the recycled nonwoven fabric and reducing the occurrence of defects.

In addition, as the flow rate and flow rate of compressed air supplied to the raw material injection nozzle are adjusted based on the detection value of the flow meter, the raw material always has a constant injection pressure through the raw material injection nozzle regardless of the raw material flow rate in the raw material supply pipe. can be sprayed.

1 is a view showing a non-woven fabric recycling apparatus according to an embodiment of the present invention;
2 is a view showing a part of a nonwoven recycling apparatus according to an embodiment of the present invention;
3 is a view showing the state of the filter tank when vacuum dehydration proceeds in the filter tank of the nonwoven fabric recycling apparatus according to an embodiment of the present invention;
4 is a view showing a state of discharging the recycled nonwoven fabric to the side after vacuum dehydration is made in the strainer of the nonwoven fabric recycling apparatus according to an embodiment of the present invention;
5 and 6 are flowcharts sequentially illustrating a nonwoven fabric recycling method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments allow the disclosure of the present invention to be complete, and the scope of the invention to those of ordinary skill in the art completely It is provided to inform you. In the drawings, like reference numerals refer to like elements.

A nonwoven fabric recycling apparatus and a recycling method according to a preferred embodiment of the present invention produce a recycled nonwoven fabric by using a wet recycling process for a waste nonwoven fabric. The surface of a semiconductor device including a semiconductor wafer and a gripper for loading and unloading the semiconductor wafer It is possible to produce a recycled nonwoven fabric as a cleaning member for removing particles, and it is made to variably control the surface roughness of the recycled nonwoven fabric, which is a product, so that it is possible to variously produce a recycled nonwoven fabric having a desired surface roughness according to the object to be cleaned.

Hereinafter, the present invention will be described in detail with reference to Examples.

As shown in FIG. 1 , the nonwoven fabric recycling apparatus according to an embodiment of the present invention includes a mixing tank 100 , a filtering unit 200 , a fixing agent adding unit 300 and a filtering tank 400 .

First, in the blending tank 100, the waste nonwoven fabric pulverized body is dispersed and mixed in water together with the filler to form the waste nonwoven fabric mixture (A), and a separate blending tank stirrer 110 is provided for uniform mixing.

The waste non-woven fabric pulverized body is obtained by finely pulverizing non-woven fabric scrap or non-woven fabric waste generated during the manufacturing process of the non-woven fabric product using a pulverizer. It is desirable to have a length. As the filler, various functional fillers including a resin material for bonding and controlling the physical properties of the pulverized waste non-woven fabrics are used. In the mixing tank 100 , the waste non-woven fabric pulverized body and the filler are supplied in a state of being filled with water, and the waste non-woven fabric pulverized body and the filler supplied to the water are uniformly dispersed and mixed in the water by the blending tank stirrer 110 .

As shown in FIG. 1 , the mixing tank water supply unit 120 for supplying water into the mixing tank 100 includes a groundwater pump 121 that sucks groundwater, and a groundwater tank 122 that stores groundwater provided from the groundwater pump. ), and a valve 124 provided on the groundwater supply pipe 123 connecting between the groundwater tank 122 and the mixing tank 100 .

The mixing tank 100 is provided with a water level sensor (not shown) for detecting the level of the stored water, and the control unit may control the opening of the valve 124 by receiving the detected value of the water level level sensor.

Meanwhile, in the mixing tank 100 as described above, the waste nonwoven fabric pulverized body having a fine particle size is dispersed and mixed in water together with the filler to generate dust in the process of forming the waste nonwoven fabric mixture (A).

Such dust is generated inside the mixing tank 100 and around the mixing tank, and if the dust is not removed, it adversely affects the health by inhalation by the worker's breathing as well as the generation of contamination in the workplace.

In the present invention, a separate dust collector 130 for removing dust is provided as shown in FIG. 1 to prevent such a problem from occurring.

In the related drawings, the dust collector 130 is shown as being provided to cover the upper opening of the mixing tank 100 as a whole, but is not limited thereto, and the mixing tank 100 itself has a structure in which the upper side is closed. The dust collector 130 may be installed in a structure capable of sucking and removing fine dust generated inside the mixing tank 100 .

Next, at least one filtering unit 200 is provided to receive the waste nonwoven mixture (A) from the mixing tank 100 and filter the waste nonwoven pulverized body among the closed nonwoven mixtures based on a set size. The mixing tank 100 and the filtering unit 200 are connected through a pipe 210, and a separate transfer pump and a valve for flow control are provided in this pipe 210 for supply of the waste nonwoven mixture (A). .

On the other hand, the 'filtering based on the set size' is for adjusting the surface roughness of the recycled nonwoven fabric formed in the sieving tank 400 to be described later, and in the embodiment of the present invention, the recycled nonwoven fabric is the semiconductor device. It is used as a cleaning member for removing surface particles, and only the waste non-woven fabric pulverized body of the size set to correspond to this is filtered to move to the post-process.

The set size of the pulverized waste nonwoven fabric filtered by the filtering unit 200 can be variably adjusted according to the surface roughness of the recycled nonwoven fabric (B) to be finally produced, and thus the desired surface roughness of the recycled nonwoven fabric can be varied and easily adjusted. can be changed A detailed description of this variable regulation will be described later.

In an embodiment of the present invention, at least one filtering unit 200 may be provided between the mixing tank 100 and the fixing agent addition unit 300 to be described later, but it is preferable to provide at least two or more. .

In other words, when the surface roughness of the finally produced recycled nonwoven fabric (B) is smaller than a certain level, the set size for filtering the waste nonwoven fabric is set to be small in response to this, and the waste nonwoven fabric can be efficiently removed by one filtering. There may be a disadvantage in that it is not easy to filter by . That is, although filtering is required, since filtering may be disturbed by the surrounding pulverized non-woven fabric of a relatively large particle size, and thus particles that cannot be filtered may occur, the pulverized waste non-woven fabric of the desired particle size can be quickly produced through at least two filtering processes. It is desirable to enable efficient filtering.

As shown in FIG. 1 , the filtering unit 200 includes at least a first filtering unit 220 and a second filtering unit 230 between the mixing tank 100 and a fixing agent adding unit 300 to be described later. In the case of providing two or more, it is preferable that the set sizes of the pulverized waste non-woven fabrics filtered by each filtering unit are different from each other. For example, the second filtering unit 230 located at the relatively rear side on the supply path of the closed non-woven fabric mixture has a relatively smaller particle size (set size) than the first filtering unit 220 located at the relatively front side. It is preferable that the waste non-woven fabric is made to be able to filter the pulverized body. Hereinafter, for convenience of description and illustration, a case in which two filtering units 200 are provided as an example will be described.

In an embodiment of the present invention, the first filtering unit 220 filters and filters the pulverized waste nonwoven fabric having a size greater than or equal to a first set size among the waste nonwoven fabric mixture supplied from the mixing tank 100, and pulverizes the waste nonwoven fabric smaller than the first set size. As a post-process to provide a waste nonwoven mixture including a sieve, it includes a filtering chamber 221 , a filter 224 , and a stirrer 225 .

First, the filtering chamber 221 has an internal space to receive and accommodate the waste nonwoven mixture supplied from the mixing tank 100 through the pipe, the waste nonwoven mixture supply port 222 is provided at the upper part, and the waste nonwoven fabric mixture outlet port ( 223) is provided.

In the related drawings, the upper side of the filtering chamber 221 is shown as an open structure, so that the opening functions as the closed nonwoven mixture supply port 222. However, unlike the illustrated shape, the upper opening of the filtering chamber 221 is closed by a cover. In this case, the waste non-woven fabric mixture supply port 222 may be provided in the cover.

Next, the filter 224 is provided in the filtering chamber 221 to filter the pulverized waste nonwoven fabric included in the waste nonwoven fabric mixture substantially based on a set size, and is provided to be replaceable in the filtering chamber 221 .

For example, a seating protrusion (not shown) capable of seating the filter 224 from the upper side may be provided on the inner surface of the filtering chamber 221 , and the filter 224 is moved laterally in the filtering chamber 221 to filter the filter A separate opening (not shown) for inserting/separating the slide laterally may be provided.

The filter 224 is, for example, a stainless mesh mesh, which is provided so as to be replaceable in the filtering chamber as described above, so that the user can variably adjust the set size of the waste non-woven fabric pulverized body to be filtered and finally recycle formed in the sieve 400 . The surface roughness of the nonwoven fabric (B) can be easily adjusted. In other words, a user may select a filter having an appropriate size from among filters having various mesh sizes and replace and install the filter in the filtering chamber 221 to achieve a desired surface roughness.

On the other hand, during the entire process for recycling non-woven fabrics, pulverized waste non-woven fabrics having a particle size larger than the mesh size of the filter are stacked on the upper part of the filter 224, and the entire process cycle (from mixing tank to filter tank) is stacked. After a series of processes) is completed, the user may separate the filter 224 from the filtering chamber 221 and feed back the pulverized waste nonwoven fabric filtered through the filter 224 to the mixing tank 100 for reuse. Therefore, it is possible to maximize the recycling efficiency of the waste nonwoven fabric by minimizing the waste of materials.

In addition, the user separates the filter 224 from the filtering chamber 221, removes the pulverized waste non-woven fabric that has not been filtered by the filter from the filter, stores it in a separate recycling container, and then re-supplys it to the mixing tank 100. In addition, the separated filter may be re-mounted in the filtering chamber 221 to proceed with the next process cycle after the washing process.

Next, the stirrer 225 evenly disperses and mixes the waste non-woven fabric pulverized body accommodated in the filtering chamber 221, the filler, and water, similar to the mixing tank agitator 110, while stirring the waste non-woven fabric pulverized body There is an advantage that the work time required for filtering can be further shortened by filtering according to the set size.

On the other hand, when the waste non-woven fabric mixture is filtered while the agitation of the waste non-woven fabric mixture is performed in the filtering chamber 221 , if the amount of water contained in the filtering chamber 221 is insufficient for a certain amount, not only the stirring is not performed properly but also the filtering Efficiency can also be reduced.

In the present invention, in order to solve this disadvantage, additional water is supplied to the filtering chamber 221 of the first filtering unit 220 . Specifically, as shown in FIG. 1 , a filtering chamber water supply pipe 226 for providing the groundwater stored in the groundwater tank 122 to the filtering chamber 221 is provided, and the filtering chamber water supply pipe 226 is supplied with groundwater. A valve 228 is provided for regulating the

On the other hand, the filtering chamber 221 may be provided with a water level sensor (not shown) for detecting the level of the stored water, the control unit receives the detection value of the water level level sensor to control the opening of the valve 228 have.

In an embodiment of the present invention, the second filtering unit 230 filters and filters the pulverized waste nonwoven fabric of the second set size or more among the waste nonwoven fabric mixture supplied from the first filtering unit 220 and filters the waste less than the second set size. As a post-process to provide the waste non-woven fabric mixture including the non-woven fabric pulverized body, it also includes a filtering chamber 221 , a filter 224 , and a stirrer 225 .

The second filtering unit 230 receives the waste nonwoven mixture discharged from the waste nonwoven mixture outlet 223 of the first filtering unit 220 through a pipe, and in this pipe, a separate transfer pump and a valve for flow control are similarly provided. is prepared

In addition, the waste non-woven fabric mixture discharged through the waste non-woven fabric mixture outlet of the second filtering unit 230 is supplied to a sieving tank 400 to be described later through a pipe, and also in this pipe, a separate transfer pump and a valve for flow control is prepared Here, since the filtering chamber and the stirrer are substantially the same as/similar to the first filtering unit, repeated descriptions below will be omitted.

The filter 224 of the second filtering unit 230 is provided in the filtering chamber and filters the waste non-woven fabric pulverized body included in the waste non-woven fabric mixture based on a set size, and is provided to be replaceable in the filtering chamber 221 . , It is generally similar to the filter of the first filtering unit, except that it is provided to filter the pulverized non-woven fabric having a relatively smaller particle size (set size) than the filter 224 of the first filtering unit 220 .

Similarly, the filter 224 of the second filtering unit 230 is provided to be replaceable in the filtering chamber, so that the user variably adjusts the set size of the crushed waste non-woven fabric to be filtered to be finally formed in the filtering tank 400 . The surface roughness of the recycled nonwoven fabric (B) can be easily adjusted.

That is, the present invention has the advantage of easily implementing the surface roughness of the recycled nonwoven fabric (B), which is the final product, to a certain level or less as the waste nonwoven fabric pulverized body is filtered twice, and as described above, the filtering unit At least one bar 200 may be provided, and an appropriate number may be installed and operated in consideration of the surface roughness and filtering efficiency of the recycled nonwoven fabric.

Next, the fixing agent adding unit 300 supplies a fixing agent that aggregates the waste nonwoven pulverized body and the filler to the waste nonwoven mixture that has passed through the filtering unit 200 to form a raw material.

The fixing agent adding unit 300 supplies the fixing agent to a pipe connecting the filtering unit 200 and the sieving tank 400 to add the fixing agent to the waste nonwoven mixture A flowing in the pipe. The pulverized waste nonwoven fabric included in the waste nonwoven fabric mixture A may be structurally aggregated and fixed to each other by the fixer added to the waste nonwoven fabric mixture A through the fixer adding unit 300 .

The fixing agent may be a commonly used one, such as polyvinyl acetate resin or sodium thiosulfate. The fixer adding unit 300 connects the fixing agent storage tank 310 and the fixing agent storage tank 310 and the pipe in which the fixing agent is stored, and a fixing agent supply pipe 320 for supplying the fixing agent stored in the fixing agent storage tank to the pipe. be prepared

The fixing agent supply pipe 320 is further provided with a transfer pump for supplying the fixing agent stored in the fixing agent storage tank 310 to the pipe and an opening/closing valve for opening and closing the fixing agent supply pipe 320 . In the practice of the present invention, for convenience of description below, a material in which a fixing agent is added to the waste non-woven fabric mixture (A) is referred to as a 'raw material'.

In an embodiment of the present invention, at least one fixing agent adding unit 300 may be provided, and FIG. 1 shows a case in which three are provided as an example.

In each fixer storage tank 310, different fixers (fixing agents A, B, and C) are stored, and a separate fixer agitator 330 is provided to minimize the aggregation of the stored fixer over a certain level. have.

Next, as shown in FIG. 1 , the sieving tank 400 forms a recycled nonwoven fabric (B) by receiving a waste nonwoven mixture containing a fixer, that is, a raw material, and a raw material supply pipe 410 through which the raw material is transported. It receives raw materials through the process and manufactures recycled non-woven fabrics. Although the related drawings show a structure in which the raw material supply pipe 410 and one strainer 400 are connected, it is not limited thereto, and after branching at least two raw material supply pipes, a plurality of manure through each branch pipe It is also possible to supply raw materials in crude oil.

The filter tank 400 manufactures a recycled nonwoven fabric using a raw material formed by adding a fixative to the waste nonwoven fabric mixture. The filter tank 400 is a compressed air supply unit 440 for providing compressed air into the filtering tank body 420, the raw material injection nozzle 430 provided at the end of the raw material supply pipe 410, and the raw material supply pipe 410, It includes a sieve 461 installed inside the sieve body 420, and a sieve 462 that is installed inside the sieve body 420 to support the sieve 461.

First, the strainer body 420 includes a bottom 422 provided with a drain 421 and a side wall 423 extending upward from the bottom 422 . The side wall 423 includes an upper side wall 424 that is vertically separably coupled and a lower side wall 425 integrally formed with the bottom 422 . A strainer 461 and a mesh support 462 are installed between the upper sidewall 424 and the lower sidewall 425 . That is, the internal space of the sieve body 420 is divided into an upper space 427 and a lower space 428 by the sieve 461 and the net support 462 .

Next, as shown in FIGS. 1 and 2 , the raw material injection nozzle 430 is provided at the end of the raw material supply pipe 410 to which the raw material is transferred and injects the raw material into the strainer body 420 .

The raw material injection nozzle 430 has an inner space and is convexly rounded toward the strainer body 420 , and a plurality of raw material injection holes 431 are formed on the outer surface. The plurality of raw material injection holes 431 may be uniformly provided on the convexly rounded raw material discharge surface 432 to uniformly spray the raw material. As the raw material is uniformly sprayed toward the sieve body 420 through the plurality of raw material injection holes 431 , a uniform dispersion state of the raw material may be achieved in the sieve body 420 .

Next, as shown in FIG. 2 , the compressed air supply unit 440 provides compressed air into the raw material supply pipe 410 so that the raw material can be injected at high pressure through the raw material injection nozzle 430 , and accordingly As shown, the raw material injected into the strainer body can be more uniformly dispersed.

The compressed air supply unit 440 communicates between the air compressor 441 for generating compressed air, the air compressor 441 and the raw material supply pipe 410 so that the compressed air flows into the raw material supply pipe 410. It includes a compressed air pipe 442 to form, and an air valve 443 provided in the compressed air pipe 442 .

Here, the compressed air pipe 442 is preferably connected to be inclined to have a predetermined or more inclination angle between the raw material supply pipe 410 and the raw material supply pipe 410. It can be efficiently supplied in a pressurized state, and as a result, it provides help in realizing uniform injection through the raw material injection nozzle 430 and uniform dispersion in the sieve body 420 as described above.

That is, according to the present invention, a raw material composed of a mixture of a waste nonwoven fabric pulverized body, a filler, a fixer, and water is sprayed at high pressure so that the recycled nonwoven fabric is formed uniformly into the sieve 400, which eventually sieves. It is possible to increase the manufacturing efficiency of the recycled nonwoven fabric by making it uniformly dispersed in the tank 400 .

As shown in Figure 2, the nonwoven fabric recycling apparatus according to the embodiment of the present invention is provided on the raw material supply pipe 410 and compressed according to the measured value of the flow meter 450 for measuring the flow rate of the raw material, and the flow meter 450 and a control unit 451 for controlling the operation of the air supply unit 440 to adjust the compressed air supply state to the raw material injection nozzle 430 side.

For example, when the detected flow rate value of the flow meter 450 is greater than or equal to a set reference value, the control unit 451 may appropriately reduce the opening degree of the air valve 443 or control the operation of the air compressor 441 to supply compressed air. pressure can be reduced. On the other hand, when the detected flow rate value of the flow meter 450 is less than the set reference value, the controller 451 appropriately increases the opening degree of the air valve 443 or controls the operation of the air compressor 441 of the supplied compressed air. pressure can be increased.

That is, in the present invention, the flow rate and flow rate of the compressed air supplied to the raw material injection nozzle 430 can be adjusted based on the detected value of the flow meter 450 , and accordingly, the raw material regardless of the raw material flow rate in the raw material supply pipe 410 . Through the injection nozzle 430, the raw material can be always injected in a state having a constant injection pressure.

Next, the sieve 461 is installed to be horizontally disposed inside the sieve body 420 , and specifically, is detachably coupled between the upper sidewall 424 and the lower sidewall 425 . The sieve 461 passes water, which is a component other than the aggregate of the waste non-woven fabric pulverized bodies and the filler, from the raw material. 1 and 3, water is drained down by the sieve 461, leaving a recycled nonwoven fabric (B) consisting of a pulverized waste nonwoven fabric and agglomerates of the filler thereon.

Next, the net support 462 is installed inside the sieve body 420 to support the sieve 461 . Specifically, the mesh support 462 is detachably coupled between the upper sidewall 424 and the lower sidewall 425 and is located under the strainer 461 to structurally support the strainer.

Next, the drain pipe 470 extends from the drain hole 421 formed in the bottom 422 of the strainer body 420 . Water is discharged from the inner space of the strainer body 420 to the outside through the drain pipe 470 . A drain valve 472 for opening and closing the drain pipe is installed in the drain pipe 470 . A drain pump may be installed in the drain pipe 470 to quickly discharge water.

In addition, a vacuum forming unit 480 is connected to the drain pipe 470 . The vacuum forming unit 480 forms a vacuum in the lower space 428 of the filtering tank 400 by discharging the air inside the filtering tank 400 to the outside through the drain pipe 470, a vacuum pump 481, It includes a connection pipe 482 connecting the vacuum pump 481 and the drain pipe 470 . A portion where the connection pipe 482 and the drain pipe 470 are connected may be located upstream of the drain valve 472 . By driving the vacuum pump 481 to form a vacuum state in the lower space 428 of the sieve 400 , moisture is reduced in the recycled nonwoven fabric B formed on the sieve 461 .

Specifically, the dehydration process by vacuum formation is performed by operating the vacuum pump 481 while the drain valve 472 is closed. The lower space 428 of the sieve 400 is sealed by the recycled non-woven fabric B laminated on the sieve 461 , and the air in the lower space 428 is discharged by the vacuum pump 481 through the drain pipe 470 . By being discharged to the outside, the lower space 428 forms a vacuum state.

Accordingly, moisture contained in the recycled nonwoven fabric (B) is additionally removed, so that approximately the moisture content of the recycled nonwoven fabric (B) can be lowered to about 70% compared to the recycled nonwoven fabric.

As described above, the recycled nonwoven fabric (B), which has undergone the vacuum dehydration process in the sieve 400, is discharged from the sieve 400, and then undergoes post-processes such as compression dehydration and drying to additionally remove moisture. The present invention proposes an additional structure for efficiently discharging the vacuum dewatered recycled nonwoven fabric (B) from the filter tank (400) in the filter tank (400).

As shown in FIG. 4, the nonwoven fabric recycling apparatus according to the embodiment of the present invention presses the aggregate remaining on the upper part of the sieve 461, that is, the recycled nonwoven fabric (B) laterally, to the side with respect to the sieve body 420. It includes an aggregate conveying unit 490 for discharging.

Specifically, the sieve body 420 is provided with an outlet 429 open to the outside so that the aggregate (recycled nonwoven fabric) is discharged laterally.

In addition, the aggregate transfer unit 490 includes a push plate 491 that can come into contact with the aggregate, and an actuator 492 for reciprocating the push plate 491 in the direction of the outlet 429 . The actuator 492 may be applied as a cylinder, a ball screw, or the like.

A separate door (not shown) for opening or closing the outlet 429 to the outside may be provided in the strainer body 420, and the control unit operates a door driving unit (not shown) connected to the door to open the outlet. After that, the actuator 492 may be operated to discharge the recycled nonwoven fabric.

In this way, the recycled nonwoven fabric (B) discharged to the side of the sieve body 420 can be transferred to the work place for post-processes such as compression dehydration and drying after being seated on a separate support 495 .

Hereinafter, a nonwoven fabric recycling method according to an embodiment of the present invention will be described.

5 and 6, the nonwoven recycling method according to an embodiment of the present invention includes a waste non-woven fabric pulverization step (S100), a material mixing step (S200), a material filtering step (S300), and a fixing agent addition step (S400). ) and a recycled nonwoven fabric forming step (S500).

First, the waste nonwoven fabric is pulverized to obtain a pulverized waste nonwoven fabric, and specifically, nonwoven scrap or nonwoven waste generated in the process of manufacturing a nonwoven product is pulverized in a pulverizer to form pulverized waste nonwoven fabrics (S100). Here, the pulverized waste nonwoven fabric pulverized body preferably has a length of 10 mm or less.

Next, the waste nonwoven fabric pulverized body obtained through the waste nonwoven milling step (S100) is dispersed and mixed with a filler in water in a mixing tank to obtain a waste nonwoven fabric mixture (S200). This material blending step is performed in the blending tank 100, in which the waste non-woven fabric pulverized bodies are dispersed and mixed with water together with the filler to form the waste non-woven fabric mixture (A).

In step S200, dust generated in the mixing tank 100 and around the mixing tank 100 in the process of forming the waste non-woven fabric mixture may be removed at the same time, and this dust removal completely covers the upper opening of the mixing tank 100 Or made through the dust collector 130 of the structure that can suck the dust in the mixing tank (100).

Next, the pulverized waste nonwoven fabric among the waste nonwoven fabric mixture obtained through the material mixing step (S200) is filtered based on a set size to separate the pulverized waste nonwoven fabric larger than the set size and the pulverized waste nonwoven fabric smaller than the set size (S300).

Step S300 includes a first material filtering step (S310) of filtering and filtering the pulverized waste nonwoven fabric of the first set size or more among the waste nonwoven fabric mixture of step S200, and the pulverized waste nonwoven fabric of the second set size or more among the waste nonwoven fabric mixture that has undergone step S310 and a second material filtering step (S320) of filtering and filtering.

Here, it is preferable that the second set size is smaller than the first set size, and accordingly, the waste nonwoven fabric pulverized body having a smaller particle size can be efficiently separated and obtained by sequentially passing steps S310 and S320.

In the above, it has been described that step S300 includes two filtering steps, but the number of filtering steps can be increased or decreased according to the particle size of the waste nonwoven fabric pulverized to be finally obtained, that is, to be put into the sieve 400, Ultimately, it is possible to easily control the surface roughness of the recycled nonwoven fabric (B) through the increase or decrease of the number of filtering steps.

Steps S310 and S320 are made through the filter 224 installed so as to be replaceable in the filtering chamber 221 as described above, and in the embodiment of the present invention, after the recycled nonwoven fabric forming step (S500) is completed, the filter 224 The method further includes a feedback step (S600) of separating the pulverized waste non-woven fabric from the filtering chamber 221 and then feeding back the pulverized waste non-woven fabric filtered through the filter to step S200.

In addition, as shown in FIG. 6 , the user separates the filter 224 from the filtering chamber 221 , removes the waste nonwoven pulverized material filtered by the filter and removes it from the filter, and stores it in a separate recycling container. It may be re-supplied to the mixing tank 100 (S600).

In addition, as shown in FIG. 6 , in the present invention, the waste non-woven fabric pulverized body filtered by the filter is removed through step S600 and the filter 224 that has undergone a washing process is placed in the filtering chamber 221 for the next process cycle to proceed. It further includes the step of mounting (S700).

Returning back to step S300, a fixing agent for agglomeration of the crushed waste nonwoven fabric and the filler is supplied to the waste nonwoven mixture of the waste nonwoven fabric having a size smaller than the set size, water, and a filler to form a raw material (S400).

In an embodiment of the present invention, the pulverized waste nonwoven fabric included in the waste nonwoven fabric mixture may be structurally aggregated and fixed to each other by the fixer added to the waste nonwoven fabric mixture A through the fixer adding unit 300 . The fixing agent may be a commonly used one, such as polyvinyl acetate resin or sodium thiosulfate.

Next, as shown in FIG. 5, the recycled nonwoven fabric forming step (S500) is to form the recycled nonwoven fabric (B) using the waste nonwoven fabric mixture to which the fixer is added, and the raw material input step (S510), the drainage step (S520) , a vacuum dehydration step (S530), a recycled nonwoven fabric (aggregate) side discharge step (S540), a compression dewatering step (S550), and a drying step (S560).

First, in the raw material input step (S510), the raw material prepared through the fixing agent addition step (S400) is put into the strainer. Specifically, the raw material is discharged from the raw material injection nozzle 430 in a state in which water is filled in the sieve 400 higher than the sieve 461 , and an appropriate amount is supplied to the upper space 427 of the sieve 400 . The raw material input to the sieve 400 exists only in the upper space 427 by the sieve 461 .

In other words, in step S510, the raw material may be uniformly sprayed into the strainer body 420 through the raw material injection nozzle 430, and compressed into the raw material supply pipe 410 to more reliably perform this uniform injection. The air supply takes place at the same time. Accordingly, in step S510, the raw material may be injected at high pressure through the raw material injection nozzle 430, and the raw material inside the strainer body 420 may be more uniformly dispersed.

In addition, in step S510, as described above, the raw material flow rate in the raw material supply pipe 410, which is the raw material transfer path to the sieve tank body 420, is measured, and the raw material is injected at high pressure into the sieve tank body 420 according to the flow rate measurement value. Adjust the supply pressure of compressed air for

That is, it is possible to adjust the flow rate and flow rate of the compressed air supplied to the raw material injection nozzle 430 side based on the detection of the flow rate value of the raw material, and accordingly, the raw material injection nozzle 430 regardless of the raw material flow rate in the raw material supply pipe 410 . Through this, it is possible to ensure that the raw material is always sprayed with a constant spray pressure.

Next, in the drainage step ( S520 ), water is drained from the strainer 400 through the drain hole ( 421 ). Specifically, the drain valve 472 installed in the drain pipe 470 is opened to perform drainage, and after the water in the strainer 400 is completely drained, the strainer is placed on the strainer 461 as shown in FIG. 3 . Only the agglomerates remain to form the recycled nonwoven fabric (B). The recycled nonwoven fabric (B), which has undergone such a drainage step, contains a significant amount of moisture, and contains approximately 120% of moisture compared to the recycled nonwoven fabric (B).

Next, in the vacuum dehydration step (S530), a vacuum is formed in the strainer 400 to further reduce the moisture in the recycled nonwoven fabric (B), and specifically, the vacuum pump ( 481) works. The lower space 428 of the sieve 400 is sealed by the recycled non-woven fabric B laminated on the sieve 461 , and the air in the lower space 428 is discharged through the drain pipe 470 by the vacuum pump 481 . By being discharged to the outside, the lower space 428 forms a vacuum state, and accordingly, moisture contained in the recycled nonwoven fabric B is further removed. By the vacuum dehydration step (S530), the moisture content of the recycled nonwoven fabric (B) is lowered to about 70% compared to the recycled nonwoven fabric.

Next, in the side discharge step (S540) of the recycled nonwoven fabric (aggregate), the recycled nonwoven fabric (aggregate) remaining on the upper part of the sieve 461 is pressed laterally and discharged to the side with respect to the sieve body 420 .

Specifically, as shown in FIG. 4, after opening the outlet 429 of the strainer body 420 to the outside, the actuator 492 is operated to discharge the recycled nonwoven fabric (B) to the outside through the outlet 429. can do it

Next, in the compression dewatering step (S550), the recycled nonwoven fabric (B), which has undergone the step S540, is compressed by using a separate press machine (not shown), whereby dehydration is additionally performed.

Next, in the drying step (S560), the recycled nonwoven fabric (B), which has undergone the compression dehydration step (S560), is dried by heat treatment at a high temperature. By the drying step (S560), the moisture content of the recycled nonwoven fabric (B) is lowered to about 3% compared to the recycled nonwoven fabric. Meanwhile, between the compression dewatering step and the drying step, a blanking step of punching the recycled nonwoven fabric into a desired shape may be further performed.

In the foregoing, the present invention has been shown and described in connection with preferred embodiments for illustrating the principles of the present invention, but the present invention is not limited to the construction and operation as shown and described as such. Rather, it will be apparent to those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.

A: Waste non-woven fabric mixture B: Recycled non-woven fabric
100: mixing tank 110: mixing tank stirrer
120: mixing tank water supply unit 130: dust collector
200: filtering unit 220: first filtering unit
221: filtering chamber 224: filter
225: agitator 226: filtering chamber water supply pipe
230: second filtering unit 300: fixing agent addition unit
400: strainer 429: outlet
430: raw material injection nozzle 431: raw material injection port
440: compressed air supply 450: flow meter
451: control unit 461: strainer
462: mesh support 470: drain pipe
480: vacuum forming unit 481: vacuum pump
490: aggregate transfer unit 491: push plate
492: actuator

Claims (12)

a mixing tank in which the waste non-woven fabric pulverized body is dispersed and mixed in water together with a filler to form a waste non-woven fabric mixture;
at least one filtering unit capable of receiving the waste nonwoven mixture from the mixing tank and filtering the waste nonwoven pulverized body of the closed nonwoven mixture based on a set size;
at least one fixing agent adding unit for forming a raw material by supplying a fixing agent for agglomeration of the crushed waste non-woven fabric and the filler to the waste non-woven fabric mixture that has passed through the filtering part; and
A recycled nonwoven fabric is formed by receiving the raw material, a filter body, a raw material injection nozzle provided at an end of a raw material supply pipe to which the raw material is transferred, and spraying the raw material into the filter body body, and compressed into the raw material supply pipe Including a filter tank having a compressed air supply unit that provides air to enable high-pressure injection of the raw material through the raw material injection nozzle,
The manure tank,
a sieve provided in the sieve body to pass water excluding the aggregate of the waste non-woven fabric pulverized body and the filler from the raw material; and
Non-woven fabric recycling apparatus, characterized in that it comprises an aggregate conveying unit for laterally pressing the aggregate remaining on the upper part of the sieve with respect to the sieve body to the side of the sieve. According to claim 1,
a flow meter provided on the raw material supply pipe to measure the flow rate of the raw material; and
Non-woven fabric recycling apparatus, characterized in that it further comprises a controller capable of controlling the operation of the compressed air supply unit according to the measured value of the flow meter to adjust the compressed air supply state to the raw material injection nozzle side. delete According to claim 1,
The strainer body is provided with an outlet so that the aggregate is discharged laterally,
The agglomerate transfer unit, a nonwoven recycling apparatus comprising a push plate contactable with the agglomerate, and an actuator for reciprocating the push plate toward the outlet direction. According to claim 1,
Non-woven fabric recycling apparatus, characterized in that it further comprises a dust collector for removing the dust generated inside the mixing tank and around the mixing tank in the process of forming the waste non-woven fabric mixture. According to claim 1,
At least two or more of the at least one filtering unit are provided between the mixing tank and the fixing agent adding unit,
The set size of the pulverized waste non-woven fabric filtered by each filtering unit is different from each other as well as variably adjustable. 7. The method of claim 6,
The filtering unit,
a filtering chamber provided with a waste non-woven mixture supply port on the upper portion;
a filter provided to be replaceable in the filtering chamber and filtering the waste non-woven fabric pulverized body according to a set size; and
Non-woven fabric recycling apparatus comprising a stirrer for stirring the waste non-woven mixture accommodated in the filtering chamber. (a) pulverizing the waste nonwoven fabric to obtain a pulverized waste nonwoven fabric;
(b) a material mixing step of dispersing and mixing the pulverized waste nonwoven fabric together with a filler in water in a mixing tank to obtain a waste nonwoven fabric mixture;
(c) a material filtering step of filtering the pulverized closed nonwoven fabric of the closed nonwoven fabric mixture based on a set size to separate the pulverized closed nonwoven fabric having a size larger than a set size and a pulverized waste nonwoven fabric smaller than a set size;
(d) adding a fixing agent to form a raw material by supplying a fixing agent for agglomeration of the crushed waste nonwoven fabric and the filler to the waste nonwoven mixture of the waste nonwoven fabric having a size smaller than the set size, water, and a filler; and
(e) a recycled nonwoven fabric is formed using the raw material, but after the raw material is sprayed at high pressure like compressed air into the main body of a sieve equipped with a sieve, the aggregate of the remaining waste non-woven fabric pulverized body and the filler excluding the water is A recycled nonwoven fabric forming step of forming a recycled nonwoven fabric by vacuum dehydration in a state remaining on the sieve,
Step (e) is,
(e1) sidewardly pressing the aggregate remaining on the upper part of the sieve and discharging it laterally with respect to the sieve body;
(e2) dehydrating by compressing the aggregate discharged from the filter body; and
(e3) Nonwoven recycling method comprising the step of drying the agglomerate that has undergone the step (e2) at a high temperature. 9. The method of claim 8,
In step (e),
Non-woven fabric recycling, characterized in that the flow rate of the raw material in the raw material supply pipe, which is the raw material transport path to the filter body, is measured, and the compressed air supply state for high-pressure injection of the raw material into the filter body is adjusted according to the flow rate measurement value. Way. delete 9. The method of claim 8,
In the step (b), the nonwoven recycling method, characterized in that the removal of dust generated in the mixing tank and around the mixing tank in the process of forming the waste nonwoven fabric mixture. 9. The method of claim 8,
Step (c) is,
(c1) a first material filtering step of filtering the pulverized closed nonwoven fabric having a size greater than or equal to a first set size among the waste nonwoven fabric mixture of step (b); and
(c2) a second material filtering step of filtering and filtering the pulverized waste nonwoven fabric having a size greater than or equal to a second set size among the waste nonwoven fabric mixture that has undergone step (c1),
The second set size is a nonwoven recycling method, characterized in that smaller than the first set size.

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