KR20170089182A - Sludge dryer - Google Patents

Sludge dryer Download PDF

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Publication number
KR20170089182A
KR20170089182A KR1020160009261A KR20160009261A KR20170089182A KR 20170089182 A KR20170089182 A KR 20170089182A KR 1020160009261 A KR1020160009261 A KR 1020160009261A KR 20160009261 A KR20160009261 A KR 20160009261A KR 20170089182 A KR20170089182 A KR 20170089182A
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KR
South Korea
Prior art keywords
sludge
scraper
shaft
rotating shaft
drying
Prior art date
Application number
KR1020160009261A
Other languages
Korean (ko)
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KR101765117B1 (en
Inventor
박주일
김용운
정중현
Original Assignee
태림인더스트리(주)
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Priority to KR1020160009261A priority Critical patent/KR101765117B1/en
Publication of KR20170089182A publication Critical patent/KR20170089182A/en
Application granted granted Critical
Publication of KR101765117B1 publication Critical patent/KR101765117B1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • B01F7/16—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage
    • B02C18/0092—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage for waste water or for garbage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • F26B9/08—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers including agitating devices, e.g. pneumatic recirculation arrangements
    • B01F2215/0052—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • B02C2201/063—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage for waste water or sewage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The present invention resides in that the sludge is repeatedly agitated and dried through a unit drying device repeatedly arranged in the vertical direction to reduce the water content of the sludge and the sludge is pulverized through the sludge crushing device disposed between the unit drying devices, The sludge drying apparatus according to the present invention comprises a drying chamber for providing a drying space for sludge; A scraper rotating shaft provided inside the drying chamber; A plurality of scraper devices spaced apart from the scraper rotating shaft and rotated together with the rotation of the scraper rotating shaft to stir the sludge; A plurality of heat plates disposed between the scraper devices for heating the sludge while providing a stirring space for the sludge; And a sludge crushing device provided at a lower portion of the specific heat plate for crushing and pulverizing the sludge.

Description

[0001] Sludge dryer [0002]

The present invention relates to a sludge drying apparatus, and more particularly, to a sludge drying apparatus which repeatedly stirs and dries a sludge through a unit drying apparatus repeatedly arranged in a vertical direction to reduce the water content of the sludge, And more particularly, to a sludge drying apparatus capable of doubling the sludge drying efficiency by doubling the sludge through the sludge crushing apparatus.

In recent years, the incidence of domestic sewage or industrial wastewater is increasing. Accordingly, the wastewater treatment plant, which is a basic facility for improving water quality, is also on the rise to prevent water pollution in major rivers and rivers, and the amount of wastewater sludge, which is a by-product secondary wastewater, is gradually increasing.

At present, sewage sludge is mostly disposed of by landfilling and marine dumping. However, in the case of simple landfill, the landfill of sewage treatment plant sludge with a capacity of 10,000 tons / day or more is prohibited in accordance with the revision of the Enforcement Regulations of the Waste Management Act from July 2003. Thus, although the proportion of marine dumping is increasing, there is a concern that the marine ecosystem may be contaminated by eutrophication due to excessive organic matter, algae growth due to the introduction of a large amount of vegetative nutrients, and oxygen depletion, Korea entered into the London Convention on December 21, 1993, and entered into force on January 19, 1994. In particular, since 2004, Korea has been conducting the leaching test and the content test, The law is being revised, for example, to enforce regulations and ban marine emissions from January 1, 2016. Incineration, which is also considered as a sludge disposal method, causes problems of air pollution due to secondary environmental pollutants as well as construction costs and operating costs of high incineration facilities.

Recently, various types of sludge drying devices have been developed for recycling sludge (Korean Patent No. 1100899, Korean Laid-open Patent No. 2014-132462, etc.). However, in the conventional sludge drying apparatus, an overload of the drying apparatus due to the attachment of sludge is caused to cause a sudden stop phenomenon, or there is a problem in that the sludge slip phenomenon due to excessive introduction of sludge and inadequate stirring causes a decrease in drying efficiency . In addition, the conventional sludge dryer has a structure in which it is not easy to access the inside of the dryer when fixed, which is inconvenient for repairing.

Korean Patent No. 1100899 Korean Patent Publication No. 2014-132462

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a sludge drying apparatus which repeatedly stirs and dries a sludge through a unit drying device repeatedly arranged in a vertical direction, And a sludge drying device capable of doubling sludge through the sludge crushing device and doubling the sludge drying efficiency.

Another object of the present invention is to provide a sludge drying apparatus which is easy to maintain and maintain by constituting a scraper device for agitating sludge with a detachable structure.

According to an aspect of the present invention, there is provided a sludge drying apparatus comprising: a drying chamber for providing a drying space for sludge; A scraper rotating shaft provided inside the drying chamber; A plurality of scraper devices spaced apart from the scraper rotating shaft and rotated together with the rotation of the scraper rotating shaft to stir the sludge; A plurality of heat plates disposed between the scraper devices for heating the sludge while providing a stirring space for the sludge; And a sludge crusher provided at a lower portion of the specific heat plate to crush the sludge to decompose the sludge.

Wherein the sludge crusher comprises a crushing chamber for providing a crushing space for the sludge and a crusher for crushing sludge contained in the crushing chamber, the crusher being composed of a pair of blades arranged in parallel, And the blades of the blades may be arranged so as to be alternately overlapped with each other.

The scraper device is composed of a plurality of scrapers arranged on the same plane, and the plurality of scrapers are disposed at a certain angle apart from each other in the rotating direction of the scraper rotating shaft.

Each of the scrapers is made of a shaft and a stirrer, the shaft is fixed on the scraper rotating shaft, and a plurality of stirrers are spaced apart from each other on the shaft, and the stirrer has a shape in which two plates are orthogonally coupled A sludge receiver for stirring the sludge in contact with the sludge, and a fixing member mounted on the periphery of the shaft in a cylindrical shape to fix the sludge receiver to the shaft.

The cylindrical fixing member has a shape in which a cross section has a circular opening area (hereinafter referred to as an opening area), and on the upper shaft, a fixing pin is provided in a direction perpendicular to the shaft, And the fixing member can be rotated at a predetermined angle by the width of the opening region.

A steam supply pipe is provided inside each of the heat plates, and steam is supplied through one side of the steam supply pipe and steam is discharged through the other side. A sludge transfer hole is provided in the heat plate, a sludge transfer hole is provided in the center of the heat plate in the case of the hot plate of the hole means, and a sludge transfer hole is provided in the periphery of the heat plate in the case of the heat plate of the even number means.

The sludge drying apparatus according to the present invention has the following effects.

It is possible to dry the sludge through a plurality of unit drying devices composed of a scraper and a hot plate and to improve the drying efficiency of the sludge as the sludge is undifferentiated by the sludge crushing device during the drying of the sludge through the plurality of unit drying devices .

1 is a front view of a sludge drying apparatus according to an embodiment of the present invention;
2 is a plan view of a scraper device;
3 is a plan view of a heating plate;
Fig. 4 and Fig. 5 are schematic diagrams of a scraper. Fig.
6 is a plan view of the sludge crusher;

The present invention proposes a technique for repeatedly performing the drying and drying of the sludge through a plurality of unit drying devices by repeatedly arranging the unit drying device composed of the heat plate and the scraper device in the vertical direction and drying the sludge. In addition, a technique for disposing a sludge crushing device between unit drying devices and improving the drying efficiency of the sludge by pulverizing the sludge through the sludge crushing device is proposed. In addition, the present invention proposes a sludge drying device that can be easily separated and maintained by selectively separating each device constituting the scraper.

Hereinafter, a sludge drying apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a sludge drying apparatus 100 according to an embodiment of the present invention includes a cylindrical drying chamber 110. The drying chamber 110 provides a mounting space for a plurality of unit drying apparatuses to be described later, and the drying process of the sludge by the plurality of unit drying apparatuses proceeds in the drying chamber 110.

A scraper rotating shaft 120 is provided in a central portion of the drying chamber 110 in a direction perpendicular to the drying chamber 110. A scraper device is provided on the scraper rotating shaft 120 at regular intervals, and the scraper device 120 and the scraper rotating shaft 120 are at right angles. That is, a plurality of scraper devices are arranged at regular intervals along the vertical direction of the scraper rotating shaft 120. A plurality of scraper devices may be provided along the vertical direction of the scraper rotating shaft 120. Each of the scraper devices may include a plurality of scrapers 130. [

The plurality of scrapers 130 are disposed at a predetermined angle on the plane of each stage, that is, on the plane of each stage along the direction of rotation of the scraper rotating shaft 120 (see FIG. 2). The scraper apparatus of each stage may be composed of 3 to 6 scrapers (130).

The scraper apparatus of each stage rotates together with the rotation of the scraper rotating shaft 120 to stir the sludge. The detailed structure of the scraper apparatus will be described later in detail.

A heat plate 140 is provided between the neighboring scraper devices. That is, a scraper device is provided on each of the heat plates 140. The heat plate 140 serves to provide a space in which the sludge can be stirred by the scraper device and to heat the sludge.

A steam supply pipe (not shown) is provided inside each of the heat plates 140 for heating the sludge. The steam is supplied through one side of the steam supply pipe to heat the heat plate, and the steam used for heating the heat plate is discharged through the other side of the steam supply pipe.

In addition, the heat plate 140 is provided with a sludge transfer hole 141 for transferring the sludge to the lower heat plate (see FIGS. 1 to 3). The sludge transfer hole 141 is provided at the central portion or the periphery of the heat plate 140. In the case of the heat plate 140 of the hole means, the sludge transfer hole 141 is provided at the center of the heat plate 140, In the case of the heat plate 140, a sludge transfer hole 141 is provided at the periphery of the heat plate 140. The sludge transporting holes 141 are formed in a perforated shape so that the sludge on each of the heating plates 140 can be transferred onto the lower heating plate 140 through the sludge transporting holes 141.

The sludge on the heat plate 140 is stirred by the scraper device and a part of the sludge is transferred onto the lower heat plate 140 through the slurry transfer hole of the heat plate 140 in the process of stirring, The transfer is repeatedly performed through the heat plate 140 at each stage. The scraper device and the heat plate 140 are repeatedly arranged and the scraper device and the heat plate 140 are repeatedly operated so that the scraper device and the heat plate 140 can be referred to as one unit drying device, The sludge drying process of the present invention can be said to be a progress of a repeated sludge drying process by a plurality of unit drying devices.

On the other hand, in order to increase the drying efficiency of the sludge, it is necessary that the sludge is pulverized. If the sludge is undifferentiated, the heat transfer surface area is increased and the drying efficiency of the sludge is improved. To this end, a sludge crushing device 150 is provided at a lower portion of the specific heat plate 140.

The sludge crushing apparatus 150 includes a crushing chamber 151 for providing a crushing space for the sludge and a crusher for crushing the sludge in the crushing chamber 151 (see FIG. 5). When the sludge is supplied into the crushing chamber 151 through the sludge supply port (not shown) provided at one side of the sludge crusher 150, crushing of the sludge proceeds by the crusher, and the crushed sludge is broken by sludge crushing And is discharged to the upper portion of the heat plate 140 through the sludge outlet provided at one side of the apparatus 150. When the sludge crushing device 150 is installed in the lower part of the heat plate 140, the sludge transfer hole 141 is omitted from the heat plate 140 provided with the sludge crushing device 150, The sludge is supplied to the sludge crusher 150 through the sludge supply port.

The crusher may be composed of a pair of blades 152 arranged in parallel and each blade 152 is composed of a rotary shaft 152a and a blade 152b disposed on the rotary shaft 152a, The blades 152b of the respective blades 152 may be arranged in an alternate manner.

Next, the detailed structure of the scraper device will be described.

Each of the scrapers 130 constituting the scraper apparatus of each stage is made up of a shaft 131 and a stirrer 132 in detail (see FIG. 4). The shaft 131 is fixed on the scraper rotating shaft 120 and a plurality of stirrers 132 are disposed on the shaft 131 so as to be spaced apart from each other.

The stirrer 132 is rotated together with the shaft 131 according to the rotation of the scraper rotating shaft 120 to substantially stir the sludge and is composed of a sludge receiver 132a and a fixing member 132b. The fixing member 132b is for fixing the sludge receiver 132a to the shaft 131. The fixing member 132b is for fixing the sludge receiver 132a to the shaft 131. The sludge receiver 132a is a member for stirring the sludge in contact with the sludge, And is provided on the circumference of the shaft 131 in the shape of a shaft. Since the fixing member 132b has a cylindrical shape and is coupled to the shaft 131, the fixing member 132b can be selectively attached and detached. In addition, the sludge receiver 132a is preferably disposed at an angle of 45 degrees with respect to the shaft 131.

5, the cylindrical fixing member 132b, which is coupled to the periphery of the shaft 131, has a circular section (hereinafter referred to as an opening section 132c) Thereby forming an opening shape. A fixing pin 131a is provided on the shaft 131 in a direction orthogonal to the shaft 131. [ The fixing pin 131a is located in the opening region 132c of the fixing member 132b so that the fixing member 132b can rotate at a predetermined angle with respect to the width of the opening region 132c. The reason why the fixing member 132b can rotate at a predetermined angle is that the sludge receiver 132a is operated in a fluid manner according to the size of the sludge when the sludge agitates.

The structure of the sludge drying apparatus 100 according to an embodiment of the present invention has been described above. The operation of the sludge drying apparatus 100 according to an embodiment of the present invention will be described below.

When the sludge is supplied onto the uppermost heat plate 140 through the upper part of the drying chamber 110, the scraper rotating shaft 120 is rotated and the uppermost stage 140, which is provided on the uppermost heat plate 140 according to the rotation of the scraper rotating shaft 120, A plurality of scrapers 130 of the scrapers 130 are also rotated by the rotation of the plurality of scrapers 130. The sludge is stirred by the sludge receiver 132a of the scrapers 130. [ At this time, the heat plate 140 is kept heated by the steam supply pipe provided therein, and moisture contained in the sludge is evaporated by the heated heat plate 140.

A part of the sludge on the heat plate 140 is transferred to the upper part of the lower part of the heat plate 140 through the sludge transfer hole 141 of the heat plate 140 while the sludge agitating by the scraper 130 proceeds, 140 are again agitated by a plurality of scrapers (130) located above the heat plate (140). The heating of the sludge by the heat plate 140, the stirring of the sludge by the scraper 130 and the transfer of the sludge through the sludge transfer hole 141 of the heat plate 140 are repeatedly carried out to dry the sludge .

Meanwhile, in the process of moving the sludge to the heating plate 140 at each stage and drying the sludge, the sludge is undifferentiated by the sludge crushing device 150 provided under the specific heating plate 140. As the sludge is crushed and undifferentiated, Drying is accelerated.

100: sludge drying apparatus 110: drying chamber
120: scraper rotating shaft 130: scraper
131: shaft 131a:
132a: sludge receiver 132b: fixing member
132c: opening area 140:
141: sludge transfer hole 150: sludge crushing device
151: crushing chamber 152a: rotating shaft
152b: blade

Claims (7)

A drying chamber for providing a drying space for the sludge;
A scraper rotating shaft provided inside the drying chamber;
A plurality of scraper devices spaced apart from the scraper rotating shaft and rotated together with the rotation of the scraper rotating shaft to stir the sludge;
A plurality of heat plates disposed between the scraper devices for heating the sludge while providing a stirring space for the sludge; And
And a sludge crusher provided at a lower portion of the specific heat plate for crushing the sludge to decompose the sludge.
The sludge crusher according to claim 1,
A crushing chamber providing a crushing space for the sludge,
And a crusher provided in the crushing chamber for crushing the sludge,
The crusher is composed of a pair of blades arranged in parallel,
Wherein each of the blades includes a rotating shaft and a blade spaced apart from the rotating shaft, and the blades of the blades are arranged in an alternating manner.
2. The sludge drying apparatus according to claim 1, wherein the scraper device is composed of a plurality of scrapers arranged on the same plane, and the plurality of scrapers are spaced apart from each other by a predetermined angle in the rotating direction of the scraper rotating shaft.
4. The method of claim 3, wherein each of the scrapers comprises a shaft and a stirrer,
Wherein the shaft is fixed on the scraper rotating shaft, a plurality of stirrers are spaced apart from the shaft,
The stirrer may include:
A sludge receiver for stirring the sludge in contact with the sludge,
And a fixing member mounted on the periphery of the shaft in a cylindrical shape to fix the sludge receiver to the shaft.
The apparatus according to claim 4, wherein the cylindrical fixing member has a sectional shape of a circular opening (hereinafter referred to as an opening region)
The upper shaft is provided with a fixing pin in a direction orthogonal to the shaft, the fixing pin is located in the opening region of the fixing member,
Wherein the fixing member is rotatable at a predetermined angle by a width of the opening region.
The steam generator according to claim 1, wherein a steam supply pipe is provided in each of the heat plates,
Wherein steam is supplied through one side of the steam supply pipe and steam is discharged through the other side of the steam supply pipe.
2. The apparatus of claim 1, wherein the heat plate is provided with a sludge transfer hole,
Wherein the sludge transferring hole is provided at the central portion of the heat plate in the case of the hot plate of the hole means and the sludge transfer hole is provided at the periphery of the heat plate in the case of the heat plate of the even number means.
KR1020160009261A 2016-01-26 2016-01-26 Sludge dryer KR101765117B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160009261A KR101765117B1 (en) 2016-01-26 2016-01-26 Sludge dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160009261A KR101765117B1 (en) 2016-01-26 2016-01-26 Sludge dryer

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KR20170089182A true KR20170089182A (en) 2017-08-03
KR101765117B1 KR101765117B1 (en) 2017-08-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108996874A (en) * 2018-08-31 2018-12-14 江苏星鑫分离设备制造有限公司 A kind of high-efficient sludge reaction tank
CN112325598A (en) * 2020-11-06 2021-02-05 江西若水新材料科技有限公司 Nanometer calcium carbonate drying device
CN112460917A (en) * 2020-11-24 2021-03-09 浙江德清蓝雅晶体纤维有限公司 Ceramic fiber production equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4139372B2 (en) * 2004-10-01 2008-08-27 大阪瓦斯株式会社 Vacuum drying equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108996874A (en) * 2018-08-31 2018-12-14 江苏星鑫分离设备制造有限公司 A kind of high-efficient sludge reaction tank
CN112325598A (en) * 2020-11-06 2021-02-05 江西若水新材料科技有限公司 Nanometer calcium carbonate drying device
CN112325598B (en) * 2020-11-06 2022-03-04 江西若水新材料科技有限公司 Nanometer calcium carbonate drying device
CN112460917A (en) * 2020-11-24 2021-03-09 浙江德清蓝雅晶体纤维有限公司 Ceramic fiber production equipment

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