KR102249007B1 - Classified combined hitting mill to improve crushing and delamination of crushed fine aggregate - Google Patents

Abstract

The present invention relates to a distribution-combined impact mill to improve delamination and grain forming of a crushed fine aggregate. More specifically, the present invention relates to the distribution-combined impact mill to improve delamination and grain forming of the crushed fine aggregate wherein a cement paste is delaminated on a surface of the fine aggregate manufactured through a pretreatment process such as crushing, the granular shape is improved by removing an angular part and is crushed to a small particle size, and at the same time enables the fine powder to be distributed by a forced centrifugal force and a blowing force, thereby improving an efficiency of distribution by blowing the fine particles upward. The present invention comprises: a frame boss (42); a strike installation part (40); a main axis (20); and a whirlpool fan (60).

Description

Classified combined hitting mill to improve crushing and delamination of crushed fine aggregate}

The present invention relates to a classification combined blow mill for peeling crushed fine aggregates and improving the grain shape, and more particularly, peeling the cement paste from the surface of the fine aggregates produced through pretreatment processes such as crushing, and removing the angular parts to reduce the grain shape. In addition to the improvement, it is pulverized into small grains, and at the same time, it is possible to classify fines by forced centrifugal force and blowing force, and to improve classification efficiency by blowing fine particles upward. About.

High-rises, large facilities and dong dong houses built during the period of high growth since economic development are now aging and are being redeveloped and rebuilt. The demand for new construction work for housing supply, etc. is also steadily increasing, and the rapid increase in the amount of construction waste is inevitable. According to a press release from the Ministry of Environment in 2000, the amount of construction waste generated accounts for 34% of the total industrial waste, and in the case of waste concrete, from 23,577 tons/day in 1996 to 71,063 tons/day in 2000. It is estimated that there will be 99,900 tons/day in 2010 and 289,470 tons/day in 2020.

Construction waste is different from domestic waste or industrial waste. And its characteristics are different depending on the stage in which it occurs. Construction waste is very large in volume and weight, so it requires enormous transportation and landfill costs when transporting or landfilling, the time of occurrence is not constant throughout the year, and it is intensively generated in large quantities during certain periods of reconstruction. Although it is said that more than 80% of the construction waste generated in this way is being recycled through an intermediate treatment company, the recycling rate is actually falling due to the quality problem of the produced aggregate and the user's perception problem.

Accordingly, in December 2003, the "Act on Promotion of Construction Waste Recycling" was enacted, and in 2005, when the law on contracts with the state as a party is applied, necessary ground rules such as obligating the use of recycled aggregates are made for the orderer. In August, the “Recycled Aggregate Quality Standard” was finalized, and the quality certification of recycled aggregates was conducted from January 1, 2007. Recycling technology by reinforcing the quality of recycled aggregates in recycled aggregate producers and promoting recycling of recycled aggregates in construction companies. The institutional foundation for the development of development was formed.

The present invention is intended to improve the quality of fine aggregates having a particle size of 8 to 11 mm or less obtained by grinding, polishing, and sorting through several crushing steps when producing recycled aggregate from masonry and construction waste, so only this will be described.

In order to produce fine aggregates from conventional waste, processes such as crushing are performed.

Conventional techniques for producing fine aggregates have crushing as a main process, and thus, a large amount of cement paste remains on the surface of the fine aggregate, and there are many problems with angled portions.

Accordingly, there is a problem in that a chemical agent is used or a separate process such as grinding is performed in order to produce a fine aggregate of good quality without a cement paste and an angled part.

Patent Registration No. 1005622 (registered on Dec. 27, 2010), previously filed by the present applicant in order to solve these conventional shortcomings, is a combined classifying hitting mill for peeling and improving grain shape of crushed fine aggregates, the case and; A striking means installed inside the case for pulverizing fine aggregates introduced into the case to remove angled portions and peel off foreign substances; The inside of the case is communicated with each of the upper and lower portions of the striking means, and the hot air forms an involute curve and is supplied to the hood side of the upper portion to dry the fine aggregate injected into the case, causing a vortex effect, and gravity force through the striking means. And first and second wind power supply means for floating the fine powder separated by the centrifugal force to the hood side, and the striking means is arranged in a vertical direction on the drive motor and the case, and rotates using the drive motor as a drive source. It includes a rotating shaft, a rotating rod disposed in multiple stages with a predetermined height on the rotating shaft and formed in a radial shape, and a hammer that is coupled to the free end of the rotating rod and rotates with the rotating rod to crush fine aggregates input into the case.

However, although these conventional hitting mills can enjoy some effect, the bearings are often damaged by high-speed rotation, so the bearings are frequently replaced and the efficiency is lowered, and the fines are classified by allowing them to be discharged as expected in the blowing effect. There were several drawbacks, such as low effectiveness.

[Patent Document 1] Patent Registration No. 1005622 (registered on December 27, 2010) [Patent Document 2] Patent Publication No. 2011-0025421 (registered on March 10, 2011) [Patent Document 3] Patent Registration No. 0894451 (Registered on April 15, 2009) [Patent Document 4] Patent Publication No. 2000-0019127 (registered on April 6, 2000)

Therefore, it was conceived to solve these conventional shortcomings, and the problem of the present invention is that the hemmer peels the cement paste from the surface of the fine aggregate produced through a pretreatment process such as crushing, and removes the angled part. Its purpose is to provide a classifying blow mill for separating and classifying crushed fine aggregates that can sort and classify cement paste and fine powder in a whirlwind pan without going through a separate process.

Another problem of the present invention is to facilitate maintenance by separating and assembling the distribution plate and hammer, extending the service life of the bearing through double installation of the bearing, and convenient management by opening the inside easily. The purpose.

In the present invention, a vortex finder is installed on the upper side of the upper cylindrical body for injecting fine aggregates through the raw material input pipe, and the vertical motor is connected to the central cylindrical body installed on the upper side of the lower cone body, and rotates on the main shaft toward the upper side of the driven pulley. In the classification combined hitting mill comprising a hammer hitting the supplied fine aggregate and a cap fixing the dispersion plate to the main shaft,

Including a frame boss installed in the center of the cross frame formed by a crisscross,

It is installed in a cylindrical shape on the upper side of the center of the cross frame and includes a striking installation made of an anvil wrapped with an anvil support plate,

It is installed inside the anvil and includes a main shaft formed with an octagonal shaft for installing a tornado fan and an upper and lower hammer shafts and a dispersion plate on the upper side,

It is installed on the octagonal shaft and includes a whirlwind fan having fan blades formed on a circular outer diameter,

It characterized in that it comprises a crushing means consisting of upper and lower hammers for hitting fine aggregates with a hammer pin on the outer diameters of the upper and lower hammer shafts installed on the octagonal shaft.

According to the classification and classification hitting mill for the separation and grain shape improvement of crushed fine aggregate according to the present invention, when producing recycled aggregate from seoksan and construction waste that produces forest aggregate, it is obtained by crushing, grinding, and sorting through several crushing steps. It produces high-quality fine aggregates using fine aggregates with a particle size of 8 to 11 mm or less as raw materials, and the upper and lower hammers effectively peel off the cement paste in the fine aggregates by multi-stage collisions, minimizing the content of foreign substances. It is possible to control the particle size by adjusting the number of rotations of the angled corners and multi-stage pulverization, as well as causing an upward tornado through the installation of a tornado fan to effectively classify fines to produce high-quality fine aggregates.

The present invention is to be fixed and separated by a single cap from the upper side, and the coupling is correct by an octagonal shaft, so that the separation and assembly of the dispersion plate and the hamber is easy, so that repair is convenient, and the service life of the bearing is improved through the double installation of the bearing. It extends, and since the central cylindrical body can be opened and closed, the inside is easily opened to provide the effect of quickly and conveniently performing management by repairs, etc.

1 is a front cross-sectional view showing an installed state of a preferred embodiment of the present invention
2 is a plan view of the main part of the present invention
3 is a cross-sectional view of a state in which the inside of the central cylindrical body of the present invention is installed
Figure 4 is a plan view of a state in which the inside of the central cylindrical body of the present invention is installed
5 is a front view of the central cylindrical body of the present invention
6 is a plan view of a state in which the central cylindrical body of the present invention is closed
7 is a plan view of the central cylindrical body of the present invention in an open state
8 is an enlarged cross-sectional view of a main part of the hitting installation part of the present invention
9 is a cross-sectional view of an anvil of the present invention
10 is a plan view of the anvil of the present invention
11 is a plan view of a bottom plate installed on an anvil of the present invention
12 is an enlarged cross-sectional view of the main part of the anvil support ring and the bottom plate of the present invention
13 is a cross-sectional view of a state in which the crushing means is installed in the hitting installation part of the present invention
Figure 14 is a cross-sectional view of the installation state of the crushing means of the present invention
15 is a plan view of the installation state of the dispersion plate and the hammer of the present invention
16 is a front view of the main shaft of the present invention
17 is a front cross-sectional view of the whirlwind fan of the present invention
18 is a plan view of the whirlwind fan of the present invention
Figure 19 is a front view of the installation state of the whirlpool finder of the present invention

With respect to the embodiments of the present invention posted in the text, specific structural or functional descriptions are exemplified only for the purpose of describing the embodiments of the present invention, and the embodiments of the present invention may be implemented in various forms. It should not be construed as being limited to the embodiments described in.

In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for components.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

When a component is referred to as being "connected" or "installed" to another component, it is understood that it may be directly connected to or installed with the other component, but other components may exist in the middle. It should be.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "include" or "have" are intended to designate the presence of specified features, numbers, steps, actions, components, parts, or a combination thereof, but one or more other It is to be understood that it does not preclude the presence or addition of features, numbers, steps, actions, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

As shown in Figure 1, the classification and classification of the hitting mill for improving the grain shape and peeling of the crushed fine aggregate according to the present invention, the upper cylindrical body 10 to which the eddy finder 13 is connected, the raw material of the upper cylindrical body 10 The raw material input pipe 14 injected through the inside, the central cylindrical body 19 installed to allow opening and closing, the blow installation part 40 which is crushed and peeled from the inside by a blow, rotates at high speed, and a part is formed in an octagonal shape The main shaft 20, the crushing means 30 coupled to the main shaft 20, and fine powder generated when the upper and lower hammers 32 and 32a and the fine aggregate are hit by the fine aggregate (by the crushing means 30). It is composed of a whirlwind fan 60 that increases the fine powder classification effect by causing a vortex action to discharge the cement paste peeled off from the fine aggregate to the outside of the case 10.

The upper cylindrical body 10 and the central cylindrical body 19 connected from the lower side are formed in a cylindrical shape, and the lower cone body 11 is formed in a tapered shape so as to have a smaller cross-sectional area toward the lower side, and the skid beam frame 11a is formed. It is installed at a certain height from the ground through, and upper and lower fans 18 and 18a are connected to the upper cylindrical body 10 and the lower cone body 11, respectively.

The upper cylindrical body 10 and the central cylindrical body 19 collide with foreign substances such as fine aggregate and fine powder by the crushing means 30, and the outer cylinder of steel and the inner wall of the outer cylinder to minimize damage caused by such collision. It may be composed of a liner that is installed to be replaceable.

In the central cylindrical body 19, the case 10 has a striking means 20 disposed therein, and as shown in Figs. 6 and 7, a feldspar 12a is installed on both sides and an opening body installed to enable opening and closing The inside can be opened and closed through (12), a handle (12b) is installed on the opening body (12), installed to be fastened with bolts and nuts at regular intervals, and an inspection window (19a) is installed inside.

Cylindrical striking installation part 40 is installed inside the central cylindrical body 19, and it is a cylindrical shape that increases crushing efficiency by impacting, rubbing, or hitting again by a rotating hammer or particles with centrifugal force. By enclosing the outer diameter of the anvil support plate 48 to the outside of the anvil 47 of the anvil 47 and the anvil support plate 48 protrude together and fix each other with an anvil fixing piece 49 or bolts to be installed integrally, An anvil bottom plate 47a is installed on the lower side of the anvil support plate 48 so that the anvil support plate 48 and the anvil bottom plate 47a are fastened with fastening bolts 47c to maintain a solid fixed state.

The inside of the circular anvil support plate 48 in which the anvils 47 are arranged and assembled in a circular shape is formed by crushing, polishing, and sorting through several crushing steps when producing recycled aggregates from seoksan and construction wastes that produce forest aggregates. The obtained particle size may be 8 to 11 mm or less.) is introduced to provide a space for pulverization and fine powder classification by the crushing means 30.

The central cylindrical body 19 is provided with a stone finder 13 in the upper cylindrical body 10 on the upper side so that fine aggregates are injected and fine powder can be removed. The eddy finder 13 is connected to a cyclone or a bag filter to suck fine powder existing inside the upper cylindrical body 10 to collect and remove the dust.

In one portion of the upper cylindrical body 10, a raw material input pipe 14 is obliquely connected, so that fine aggregate is injected in a portion not shown, and a raw material input guide pipe 15 is installed below the raw material input pipe 14. It is to put the fine aggregate into the hitting installation unit 40.

The raw material input guide tube 15 is a double connection between the inner guide tube 15a and the external guide tube 15b so that the upper and lower lengths can be adjusted using bolts or wires, and the raw material in the distribution plate 50 It is possible to adjust the distance (height) for efficient dispersion and crushing with the input of.

When the crushing means 30 is pulverized, the fine aggregate is pulverized into a small particle size, the cement paste on the surface of the fine aggregate is peeled off, and the angled portion of the fine aggregate is removed, and the fine powder (W) removed from the fine aggregate is vortexed to classify and transport the fine powder to the dust collector side. A vortex toward the upper side is generated inside the upper cylindrical body 10 below the finder 13.

The eddy finder 13 may be configured to have a narrow cross-sectional area toward the top when discharging the fine powder inside the upper cylindrical body 10 (particles falling under the cyclone dust collector are recovered as fine aggregates according to the particle size and state). Can be used).

The lower cone body 11 is for discharging fine aggregates having improved granularity by pulverizing and pulverizing pastes (W) by the crushing means 30, and may be equipped with a valve to control the discharge of fine aggregates. .

A frame boss 42 is formed in a circular shape in the center at the lower side of the anvil support plate 47a to form a grease injection pit 46 and a bearing boss fixing key insertion hole 45, respectively, and the central cylindrical body 19 of the outer diameter A cross frame 43 is formed and supported in a crisscross direction toward ), and an anvil support plate support 44 is installed between the cross frames 43 to provide a safe and solid support state from the lower side.

The crushing means 30 installed inside the striking installation part 40 is the main shaft 20 on which the driven pulley 17 driven by being connected with the vertical motor 16 and the belt is installed at the lower side is a bearing boss assembled with a bearing. It is assembled in (42a) and the bearing boss (42a) is installed upright in the center of the frame boss (42), so the upper and lower bearings (34, 34a) are installed at regular intervals on the bearing boss (42a), and the upper bearing An octagonal shaft 21 is formed by inserting the whirlwind fan 60 and the upper and lower hampers 32 and 32a into the upper side where 34 is installed, and a square threaded portion 22 is formed on the upper side of the cap 51 ) Is fixed.

A bearing support ring 39 and a lower end cover 38a are installed on the lower side of the lower bale 34a to finish, and an upper end cover 38 is installed on the upper side of the upper bearing 34 to protect the bearing. It is to be installed so that it can be used for a long time.

A plurality of fan blades 61 are installed on the upper side of the upper end cover 38 so that the tornado fan 60 is inclined along the outer diameter of the cylindrical shape, so that crushing between the anvil 47 and the lower side of the crushing means 30 is possible. It rises and generates wind in the direction of the upper cylindrical body 10 to perform the function of blowing fine light particles upward.

While being blown away by the suction turbo fan of the bag filter, the somewhat heavy particles are classified by the cyclone and fall down, and the light particles are collected by the bag filter. This is to further increase the classification efficiency.

In addition, the upper and lower wind turbine fans 18 and 18a are assembled with the upper and lower blades to generate a eddy current with wind power to increase the classification power.

The crushing means 30 pulverizes the fine aggregate introduced into the upper cylindrical body 10 to remove foreign substances such as cement paste on the surface of the fine aggregate, and removes the angled portion of the fine aggregate to improve the grain shape of the fine aggregate. It is arranged in the vertical direction vertically inside the upper cylindrical body 10 and rotates with the vertical motor 16 as a driving source, and the upper hammer 32 and the lower hammer ( 32a) is coupled to the free ends of the upper and lower hammer shafts 31 and 31a to form a crisscross shape, and is configured to pulverize the fine aggregate that is injected while rotating together.

The driving motor 21 may be installed outside the case 10, for example, on the frame 1 or the rotation shaft 22.

The main shaft 20 may be made of special steel or the like, or only the surface may be heat treated.

The whirlwind fan 60, the upper and lower hammer shafts 31 and 31a, and the dispersion plate 50 are assembled on the octagonal shaft 21 of the main jujuk 20, and can be installed in multiple stages such as 1st and 2nd stages. , Rubber gaskets are inserted between each other to absorb vibration, prevent foreign matter intrusion, and facilitate disassembly and assembly.

The upper and lower hammers 32 and 32a are assembled at the ends of the upper and lower hammer shafts 31 and 31a with respective hammer pins 33 and 33a so that they rotate freely, and the lower end is fixed with a snap ring.

A dispersion plate 50 is installed on the upper side of the upper hammer shaft 31 so that it is uniformly distributed with the supplied fine aggregate to be supplied to the lower side, and is installed to be fixed and separated through the cap 51 on the upper side.

The upper and lower hammers 32 and 32a rotate through the main shaft 20 and apply a physical impact to the fine aggregate input to the anvil 47 to pulverize the fine aggregate, and through this pulverization, foreign substances such as cement paste on the surface of the fine aggregate It is to improve the grain shape of the fine aggregate by removing the angled portions of the fine aggregate while peeling the fine aggregate.Since the strength should be greater than that of the fine aggregate, it is made of a high-strength material such as tungsten or high manganese, or only the surface can be treated with tungsten or high manganese.

Upper and lower hammers (32, 32a) are cement paste from fine aggregates through crushing means (30) installed to have different heights with hammer pins (33, 33a) at the free ends of the upper and lower hammer shafts (31, 31a) Foreign matter such as the back is removed in a finely divided state, and the fan blade 61 of the tornado fan 60 that rotates with the rotational force of the main shaft 20 is installed to be inclined in one direction, so it is formed so that it can float upwards. .

The upper and lower hammers 32 and 32a strike the fine aggregate falling while rotating together with the main shaft 20 and float the fine powder inside the anvil 47 to the upper eddy finder 13 side.

The action of the blow mill classifier for peeling and improving grain shape of the crushed fine aggregate according to the present invention having such a configuration is as follows.

The fine aggregate produced through a pretreatment process such as crushing is introduced into the raw material input pipe 14 through a supply means such as a conveyor or a screw feeder, and then freely falls through the raw material input guide pipe 15 to be input.

The fine aggregate input through the raw material input guide tube 15 is guided to the top of the crushing means 30 and discharged, and then scattered through the dispersion plate 50 to facilitate classification and the circumference of the crushing means 30, that is, It falls on the upper and lower hammers 32, 32a and is crushed,

The free-falling fine aggregate collides with the upper and lower hammers 32 and 32a of the rotating chain, and in this process, the angled portion of the fine aggregate is removed by the strength of the upper and lower hammers 32 and 32a and the force by rotation. The cement paste adhered to the surface of is peeled off.

Since the upper and lower hammers 32 and 32a are angle-adjusted through the upper and lower hammer shafts 31 and 31a, when fine aggregate collides with the upper and lower hammers 32 and 32a, they rotate in the opposite direction to the rotation direction. As it is pushed back, it absorbs the collision energy applied when it collides with the fine aggregate.

Since a large impact is not applied to the upper and lower hammers 32 and 32a through the absorption of the collision energy, abrasion and damage of the upper and lower hammers 32 and 32a can be reduced. Of course, even if the angle of the lower hammers 32 and 32a is adjusted, there will be no problem in peeling the cement paste and removing the angled part.

The upper and lower hampers 32 and 32a are arranged in a crisscross shape when viewed in a plan view in a first stage, and may be arranged in two stages and in multiple stages, and thus, in the upper hammer 32 disposed in a relatively upper portion. The fine aggregate hit by the impact collides with the lower hammer 32a of the lower end, and the cement paste is peeled off and the angled portion of the fine aggregate is removed again. Therefore, it is possible to produce a fine aggregate of good quality by peeling the paste from the fine aggregate through multiple steps and removing the angular portion.

On the other hand, among the aggregates hit by the upper and lower hammers 32 and 32a, the lighter fine aggregates are scattered in the direction of the anvil 47, which is the inner wall surface, and are crushed again by colliding, thereby reducing the particle size and improving the grain shape.

As described above, the cement paste is peeled by striking the fine aggregate through the crushing means 30, and the angled portion is removed to improve the shape of the grain, whereby the fine aggregate and fine powder are present in the central portion of the upper cylindrical body 10. .

In this process, the fine powder generated when the crushing means 30 strikes is collected by the dust collector through the vortex finder 13. At this time, the fine aggregate of a small particle size may be directed toward the eddy finder 13 by wind power and suction power, but may be recovered from the cyclone dust collector and used as fine aggregate.

And the central cylindrical body 19 can open and close the opening body 12 through the feldspar 12a, and can be conveniently opened using the handle 12b, and the inside can be easily checked with the naked eye at any time through the inspection window 19a. Therefore, it can be easily opened for internal failure or inspection, and the frame boss 42 can be used for a long time by injecting grease into the upper and lower bearings 34 and 34a through the grease injection pit 46. The cross frame 43 and the anvil bottom support 44 can be securely and firmly fixed from the lower side to be used.

The present invention supplies fine aggregate produced through a pretreatment process such as crushing, and the crushing means of the hitting installation part exerts an impact, peeling the cement paste from the surface and removing the angled part to improve the grain shape and crush into small grains and at the same time whirlwind fan It is to provide a very useful invention that can classify fines and fine aggregates by forming a forced tornado through rotation of

10: upper cylindrical body 11: lower cone body
12: open body 12a: feldspar
12b: handle 13: vortex finder
14: raw material input pipe 15: raw material input induction pipe
16: vertical motor 17: driven pulley
18: upper wind fan 18a: lower wind fan
19: central cylindrical body 20: main shaft
21: octagonal shaft 22: square threaded portion
30: crushing means 31: upper hammer shaft
31a: lower hammer shaft 32: upper hammer
32a: lower hammer 33, 33a: ham muffin
34: upper bearing 34a: lower bearing
35: upper bearing cover 35a: lower bearing cover
40: hitting installation part 42: frame boss
32a: bearing boss 43: cross frame
44: anvil bottom support 45: bearing boss fixing key insertion hole
46: grease injection pit 57: anvil
47a: anvil bottom plate 47c: fastening bolt
48: anvil support plate 49: anvil fixing pin
50: dispersion plate 51: cap
60: whirlwind fan 61: fan wing

Claims (7)

A vortex finder 13 is installed above the upper cylindrical body 10 for injecting fine aggregates through the raw material input pipe 14, and a vertical motor in the central cylindrical body 19 installed on the upper side of the lower cone body 11 In the classification combined hitting mill consisting of a hammer that strikes the supplied fine aggregate by rotating on the main shaft to the upper side of the driven pulley to which 16 is connected, and a cap 51 that fixes the dispersion plate 50 to the main shaft,
Including a frame boss 42 installed in the center of the cross frame 43 formed in a crisscross,
It is installed in a cylindrical shape on the upper side of the center of the cross frame 43 and includes a hitting installation portion 40 consisting of an anvil 47 wrapped with an anvil support plate 48,
The main shaft 20 and bearing installed inside the anvil 47 and formed with an octagonal shaft 31 for installing the whirlwind fan 60, the upper and lower hammer shafts 31 and 31a, and the distribution plate 50 on the upper side. Including the boss 42a,
It is installed on the octagonal shaft 31 and includes a whirlwind fan 60 having fan blades 61 formed in a circular outer diameter,
Crushing means 30 consisting of upper and lower hammers 32a for hitting fine aggregates with hammer pins 33 and 33a on the outer diameters of the upper and lower hammer shafts 31 and 31a installed on the octagonal shaft 31 Classification combined blow mill for improving the peeling and grain shape of the crushed fine aggregate, characterized in that consisting of.
The method of claim 1,
The central cylindrical body 19 is connected so that the open body 12 can be opened and closed with feldspar 12a on both sides, a handle 12b is formed at the tip, and the open body 12 is fastened with bolts and nuts, and Classification combined hitting mill for separation and grain shape improvement of crushed fine aggregates, characterized in that forming an inspection window 19a.
The method of claim 1,
The striking installation part 40 is connected to a crisscross frame 43 from the central frame boss 42, an anvil bottom support 44 is installed between the frame bosses 42, and the cross frame (43) A cylindrical anvil (47) is installed on the upper side of the anvil support plate (48) to protect the outer diameter, characterized in that the separation of crushed fine aggregates and classification combined hitting mill for improving the grain shape.
The method of claim 1,
The anvil 47 is formed in a cylindrical shape and is peeled off by colliding with fine aggregates, wrapped with an anvil support plate 48 on the outer diameter, and fixed with an anvil fixing pin 49 at a portion where the anvil 47 and the anvil support plate 48 meet. , The anvil support plate (47a) protrudes from the lower side of the anvil support plate (48) and is fastened with a fixing bolt and a nut.
The method of claim 1,
The crushing means 30 has upper and lower hammer shafts 31 and 31a installed on the upper and lower sides of the octagonal shaft 21 in a crisscross shape, and the upper and lower hammer shafts 31 and 31a are mounted on the front ends of the upper and lower hammer shafts 31 and 31a. , The lower hammer (32, 32a) is connected to the hammer pins (33, 33a) to hit the fine aggregate, characterized in that the separation of the crushed fine aggregates and classification for improving the grain size combined hitting mill.
The method of claim 1,
The whirlwind fan 60 is installed between the upper end cover 38 and the lower hammer shaft 31a on the octagonal shaft 21, and the fan blades 61 protrude at regular intervals so as to be inclined in one direction at the outer tip of the circle. It is installed so as to generate a tornado upward, and install the upper and lower wind fans (18, 18a) in an inclined direction to increase the classification power by causing a vortex. Classification and hitting mill for improvement.
The method of claim 1,
The bearing boss (42a) is assembled on the main shaft (20), is upright in the center of the frame boss (42), and the bearings (34, 34a) are installed at the upper and lower portions at regular intervals. Classification and hitting mill to improve grain shape.

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