KR101966770B1

KR101966770B1 - Nonmetal conveyor chain and chain pin with steel tube therefor, and sludge collector

Info

Publication number: KR101966770B1
Application number: KR1020170085677A
Authority: KR
Inventors: 오진환
Original assignee: 주식회사 링콘테크놀로지; 오진환
Priority date: 2017-07-05
Filing date: 2017-07-05
Publication date: 2019-04-19
Also published as: WO2019009608A1; KR20190005090A

Abstract

The present invention relates to a non-metal conveyor chain, a steel tube integral chain pin applied thereto, and a sludge collector including the same. The non-metallic conveyor chain of the present invention comprises a plurality of unit chains connected to each other regularly; And a steel tube integral chain pin coupled to a connection portion to which the plurality of unit chains are connected to connect the plurality of unit chains.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-metal conveyor chain, a steel tube integral chain pin applied thereto, and a sludge collector including the same,

The present invention relates to a non-metal conveyor chain, a steel tube integral chain pin applied thereto, and a sludge collector including the same. More particularly, the present invention relates to a sludge collector having a steel tube integral type Metal chain conveyor chain which can improve the shearing force and increase abrasion resistance from materials having high specific gravity and high abrasion such as sand, sludge and slag, and can provide higher breaking strength and high strength than conventional ones, and a steel tube An integral chain pin, and a sludge collector including the same.

Non-metal conveyor chain made of composite material or high-strength engineering plastic is applied to various industrial fields such as water treatment plant for water and wastewater treatment, oil refinery, or seawater desalination, and is mainly responsible for the transfer of abrasive materials such as sand, sludge and slag. do.

A typical example is water treatment equipment for water and wastewater treatment. Conventional water treatment facilities include a float removing step for removing floating matters in raw water flowing in from a home or an industrial site, and a decomposition and precipitation step using activated sludge.

The supernatant filtered in the decomposition and precipitation step is subjected to an activation step in which oxygen is supplied from the aeration tank to propagate the aerobic bacteria, and then the supernatant is re-separated from the second clarifier. After that, And processes it to discharge it to the river.

In a water treatment plant including such a process flow, sludge (sediment or foam) is generated in the removal of suspended solids in the raw water and decomposition of wastewater using active sludge. A sludge collector is used to remove or collect such sludge.

Although there are various types of sludge collectors, it is known that a sludge collector of a chain flight type is most widely used. A conveyor chain is applied to such a sludge collector.

On the other hand, a conveyor chain applied to a conventional sludge collector was generally used for conveying flights, and was applied with a casting or stainless steel material in addition to a sprocket.

However, when the conveyor chain is applied with the casting or stainless steel material, the power of the conveying operation of the flight due to the self weight of the chain is inevitably excessive, and the manpower is required for maintenance.

In order to overcome these disadvantages, attempts have been made to apply a non-metallic conveyor chain made of composite material or high-strength engineering plastic to a conventional conveyor chain made of cast iron or stainless steel.

However, existing non - metallic conveyor chains are exposed to various problems due to material or structural limitations.

First, since a non-metallic conveyor chain must transfer a heavy material such as sand, sludge, slag, etc., it takes a lot of load. Therefore, a high breaking strength is required for a non-metal conveyor chain. .

Second, since nonmetallic conveyor chains must transport highly abrasive materials such as sand, sludge, and slag, non-metallic conveyor chains are required to have high abrasion resistance and high strength, which is difficult to replace existing ones.

Korea Patent Office Application No. 10-2016-0056355

It is an object of the present invention to improve the shear force by applying the steel tube integral type chain pin to the connecting portion of the unit chain which receives the greatest wear and shear force and to increase the abrasion resistance from the specific gravity such as sand, sludge, The present invention also provides a non-metallic conveyor chain capable of providing higher breaking strength and higher strength than the conventional ones, a steel tube integral chain pin applied thereto, and a sludge collector including the same.

The object is achieved by a system comprising: a plurality of unit chains connected to each other regularly; And a steel tube integral chain pin coupled to the connecting portion to which the plurality of unit chains are connected to connect the plurality of unit chains. [5] The non-metallic conveyor chain and the sludge collector including the same.

The steel tube integral chain pin includes a shaft portion having a plurality of through-holes, a jaw portion coupled to one end portion of the shaft portion, and a jaw portion having a larger cross-sectional area than the shaft portion A plastic pin unit having a flange portion and formed of a plastic material; And a steel tube integrally coupled to a shaft portion of the plastic pin unit.

The steel tube integral chain pin is inserted and molded integrally with the shaft portion by inserting the steel tube into the mold when the shaft portion is injection molded so that the shaft portion and the steel tube can be integrally joined without a separate assembly process have.

The steel tube may be an externally assembled steel tube integrally assembled with the outer wall of the shaft portion.

A plurality of assembly holes may be formed in the outer assembly type steel tube, and an assembly protrusion may be formed on an outer wall of the shaft portion.

The steel tube may be press-fitted into the outer wall of the shaft portion to be integrated.

The steel tube may be an inner insertion type steel tube inserted into the shaft portion.

Attachments having a plurality of through holes may be coupled to one side of the unit chains.

The above object can be accomplished by providing an apparatus for connecting a plurality of unit chains connected to a connecting portion to which a plurality of unit chains constituting a non-metal conveyor chain are connected to form a plurality of unit chains, And a plastic pin unit formed on the other end of the shaft portion and having a flange portion having a larger cross sectional area than the shaft portion, the plastic pin unit being formed by injection of plastic; And a steel tube integrally coupled to a shaft portion of the plastic pin unit, and a sludge collector including the same.

According to the present invention, the steel tube integral type chain pin is applied to the connecting portion of the unit chain which receives the greatest wear and shear force, thereby improving the shear force and increasing the abrasion resistance from the material having high specific gravity and abrasion such as sand, sludge and slag , It is possible to provide a higher breaking strength and higher strength than in the prior art.

1 is a structural view of a chain flight type sludge collector to which a non-metal conveyor chain according to an embodiment of the present invention is applied;
Fig. 2 is a main part perspective view of the non-metal conveyor chain applied to Fig. 1,
3 is a perspective view of a unit chain,
Fig. 4 is a rear perspective view of Fig. 3,
Figure 5 is an exploded view of Figure 3,
6 is a perspective view of a steel tube integral chain pin,
Figure 7 is an exploded view of Figure 6,
8 is a partial cross-sectional view of a steel tube integral chain pin applied to a non-metallic conveyor chain according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a structural view of a chain flight type sludge collector to which a non-metal conveyor chain according to an embodiment of the present invention is applied.

The flight type sludge collector includes a chain 140 connected to a plurality of first and second flights 111 and 112 for collecting sludge in the settler C to move the first and second flights 111 and 112, And the first and second driving units 131 and 132 that are disposed outside of the chain 140 and provide power for driving the chain 140.

The chain 140 applied in the settler C of Fig. 1 is a non-metallic conveyor chain 140 according to this embodiment.

Although it is an embodiment, the civil engineering structure of the settler (C) disclosed in this embodiment can form a two-layered multi-layer structure. This may be a form that applies to wastewater treatment plants with a high water treatment capacity instead of a lot of land.

When the sedimentation material C has a two-layer structure, the sludge process can be performed in both the lower one-layer region and the upper two-layer region. For this purpose, a plurality of first and second flights 111 and 112 are arranged .

Of course, the settling paper C does not have to have a two-layered double-layer structure, and therefore the scope of the present invention is not limited to the shapes of the drawings.

When the sedimentation canister C has a two-layered multi-layer structure as in the present embodiment, the first flight 111 is disposed in a lower one-storey area, the second flight 112 is disposed in an upper two- They can move the sludge as they move from that location. At this time, the sludge refers to a material having high specific gravity and high abrasiveness including sand and slag.

Both the first and second flights 111 and 112 have a long rod structure. And both the first and second flights 111 and 112 are connected to the non-metal conveyor chain 140 by a separate attachment (not shown), respectively, so that the non-metal conveyor chain 140 can be moved while operating the sludge .

The non-metal conveyor chain 140 is connected to and rotated by the first and second driving units 131 and 132 to move the first and second flights 111 and 112, respectively. One side of the non-metal conveyor chain 140 is connected to the first driving unit 131 disposed on one side of the settling paper C to move the first flight 111 while rotating the non-metal conveyor chain 140, Is connected to the second driving unit 132 disposed on the other side of the sedimentation paper C and is rotated to move the second flight 112.

Although the settling medium C as shown in FIG. 1 varies depending on the treatment capacity, the width of the settling medium C is 8 to 10 m and the length of the settling medium C is 20 to 120 m. Desirably, however, excessive power is required.

Therefore, in order to reduce the power, it is preferable to apply the chain 140 to the base metal as in the present embodiment to reduce the weight. However, the limit of the simple nonmetal such as the high strength engineering plastic is about 3.8 tons.

This is very low compared to 19 tons of metal chain, but it is not easy to apply because the required safety factor is 3-5 times that of actual use. Therefore, the same non-metal conveyor chain 140 as the present embodiment is required.

Fig. 2 is a perspective view of a non-metal conveyor chain applied to Fig. 1, Fig. 3 is a perspective view of a unit chain, Fig. 4 is a rear perspective view of Fig. 3, Fig. 5 is an exploded view of Fig. And FIG. 7 is an exploded view of FIG.

Referring to these drawings, the non-metal conveyor chain 140 according to the present embodiment improves the shearing force by applying the steel tube-integrated pin 160 to the connecting portion of the unit chain 150 which receives the greatest wear and shear force On the other hand, abrasion resistance can be increased from materials having high specific gravity and high abrasion such as sand, sludge, and slag, and it is possible to provide higher breaking strength and higher strength than in the prior art.

The unit chain 150 is a chain connected to each other regularly. One end of the unit chain 150 is open and the other end is narrowed. The unit chain 150 is connected regularly.

The unit chains 150 are regularly connected to each other so that the unit chains 150 are connected to each other to form a single line.

Referring to FIG. 5, one unit chain 150 includes a pair of chain plates 150a and 150b, and a pin hole 150c formed at both ends of the pair of chain plates 150a and 150b, The unit chain pin 160 is coupled to form one unit chain 150.

The steel tube integral chain pin 160 may include a plastic pin unit 170 formed of a plastic material and a steel tube 180 coupled to the plastic pin unit 170.

The plastic pin unit 170 may be made of, for example, an engineering plastic material. The plastic pin unit 170 includes a shaft 171 and a jaw part 172 coupled to one end of the shaft 171. The plastic pin unit 170 is larger than the shaft 171 at the other end of the shaft 171, And a flange portion 173 having a cross-sectional area.

The shaft portion 171 is formed with a plurality of through-holes 171a. Since the plastic pin unit 170 itself is made of plastic, its weight is much smaller than that of the metal. The number of the through holes 171a formed in the shaft portion 171 is advantageous in that the overall weight can be further reduced. Therefore, power loss can be prevented. However, in the case of the plastic pin unit 170, the strength and abrasion may be weak, and this disadvantage can be compensated by the steel tube 180.

The jaw portion (172) constitutes one end of the shaft portion (171). After the steel tube 180 is assembled to the shaft portion 171, the jaw portion 172 can be coupled to one end of the shaft portion 171. At this time, the steel tube 180 is first pressed into the shaft portion 171 The jaw portion 172 can be engaged. However, the scope of the present invention is not limited to these matters. That is, when the shaft portion 171 is injection molded, the steel tube 180 is inserted into the mold and insert injection molding is integrally performed with the shaft portion 171, so that a separate assembling process of pushing the steel tube 180 into the shaft portion 171 is performed The jaw portion 172 may be injection molded at one end of the shaft portion 171 at the same time of injection molding of the shaft portion 171. [

The jaw portion 172 may include a jaw pocket 172a and a plurality of jaw blades 172b projecting obliquely from the circumferential surface of the jaw pocket 172a. The plurality of jaw wings 172b are caught by one side edge of the fin hole 150c formed in the unit chain 150 so that the steel tube integral chain pin 160 can be assembled. A fix pin 172c is provided at the center of the plurality of jaw wings 172b.

The flange portion 173 forms the other end of the shaft portion 171. Since the flange portion 173 has a cross sectional area larger than that of the shaft portion 171, the plastic pin unit 170 is prevented from being detached from the pin hole 150c formed in the unit chain 150. [

On the other hand, the steel tube 180 is molded when integrally injected into the shaft portion 171 of the plastic pin unit 170. In this embodiment, the steel tube 180 is insert-injected into the outer wall of the shaft portion 171 integrally with the inside of the mold, and is applied to the steel tube integral chain pin 160 of the integral molding insert injection method.

A plurality of assembly holes 181 are formed in the outer assembly type steel tube 180 and an assembly projection 174 is formed in the outer wall of the shaft portion 171 to be assembled into the assembly hole 181. Therefore, the pin unit 170 and the steel tube 180 are not loosened at the steel tube integral chain pin 160 of the insert injection type.

The steel tube integral chain pin 160 of the insert injection type serves to prevent peeling by the repeated buckling load applied to the non-metal conveyor chain 140 according to the present embodiment.

Of course, it is also possible to push the external prefabricated steel tube 180 into the shaft portion 171 of the plastic pin unit 170 integrally by press-fitting. In this case, the assembling protrusion 181 and the assembling protrusion 174 need not be formed.

According to this embodiment having the structure and function as described above, the shear force is improved by applying the steel tube integral type pin 160 to the connecting portion of the unit chain 150 which receives the most wear and shearing force most, Sludge, slag, and other materials having high specific gravity and high abrasion resistance, and it is possible to provide higher breaking strength and higher strength than in the prior art.

In particular, when such a non-metal conveyor chain 140 is applied to the settling paper C as shown in FIG. 1, it is possible to solve problems such as over-pitch due to stretching of chains, meandering of flights, short-circuiting of chains, and the like.

8 is a partial cross-sectional view of a steel tube integral chain pin applied to a non-metallic conveyor chain according to another embodiment of the present invention.

Referring to this figure, the steel tube integral chain pin 260 according to the present embodiment also includes a plastic pin unit 270 formed by injection of plastic, and a steel tube 280 coupled to the plastic pin unit 270 ).

Meanwhile, in the present embodiment, the steel tube 280 may be applied as an inner insertion type steel tube 280 inserted into the shaft portion 271.

Since the inner insertion type steel tube 280 exists inside the shaft portion 271, the improvement of the shearing strength can be expected, but the wear of the plastic pin unit 270 is likely to occur.

Of course, although not perfect, the effect of the present invention can be provided by applying the inner insertion type steel tube 280 as in the present embodiment.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. It is therefore intended that such modifications or alterations be within the scope of the claims appended hereto.

140: Non-metal conveyor chain 150: Unit chain
155: Attachment 160: Steel tube integral chain pin
170: plastic pin unit 171:
171a: through hole 172: jaw portion
173: flange portion 174: assembling projection
180: Steel tube 181: Assembly

Claims

A plurality of unit chains connected to each other regularly; And
And a steel tube integral chain pin coupled to a connection portion to which the plurality of unit chains are connected to connect the plurality of unit chains,
The unit chain is formed at one side of the unit chain with the pin holes into which the pins of the steel tube integral type are inserted so as to face each other. At one end of the pin holes, a boundary protrusion protruding radially inward is formed.
Wherein the steel tube integral chain pin comprises:
A jaw part coupled to one end of the shaft part and a flange part formed at the other end of the shaft part and having a larger cross sectional area than the shaft part, A plastic pin unit formed; And
And a steel tube integrally coupled to a shaft portion of the plastic pin unit,
The steel tube is insert-molded into the mold when the shaft portion is injection-molded, and is integrated with the shaft portion so that the shaft portion and the steel tube are integrally joined without a separate assembly process,
A plurality of assembly holes are formed in the steel tube, an assembly protrusion is formed on an outer wall of the shaft portion,
Wherein the jaw portion includes a jaw pocket and a plurality of jaw blades protruding obliquely from the circumferential surface of the jaw pocket, the jaw portion is inserted to cover the pin hole formed in the unit chain so that the plurality of jaw blades are inserted into the jaw Wherein the steel tube integral chain pin is assembled so as not to come off from the pin hole.

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The method according to claim 1,
Wherein a plurality of attachment holes are formed on one side of the unit chains.

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