KR20170118670A - biaxial differential crushing system - Google Patents

Abstract

In a biaxial rotary crusher used in a sewage treatment plant, there is a case where a disk shape cutter is lost, and a missing portion of a disk shape cutter causes a problem in a device at a rear end such as a pump or a dehydrator.
As a result of intensive studies on the above problems, it has been found that a foreign matter trapping portion for trapping a missing portion of the disc shape cutter is provided at the rear end or the front end of the biaxial differential type crusher, It is possible to prevent the particles from being broken and broken.

Description

[0001] The present invention relates to a biaxial differential crushing system,

The present application claims priority based on Japanese Patent Application No. 2014-116689 filed on June 5, 2014. The entire contents of which are incorporated herein by reference.

The present invention relates to a biaxial differential crushing system for crushing contaminants in water.

In a sewage disposal plant or the like, when impurities such as foreign matter are introduced into a device such as a pump or a dehydrator, it becomes a cause of troubles such as clogging of the pump. Therefore, a biaxial differential crusher is provided at the front end of such a device. The biaxial differential type crusher crushes the impurities such as foreign matter contained in the for-treatment water to a size that does not cause troubles even when the impurities are introduced into the device. In addition, a double-shaft differential type crusher is used to improve the cleaning effect even when cleaning foreign objects collected on a screen or the like.

For example, Patent Document 1 discloses a two-shaft rotary type crusher for crushing and cleaning foreign matters in a foreign matter processing system recovered at a sewage treatment plant. This two-shaft rotary type crusher is configured such that two shredding units in which a plurality of disk-shaped cutters are fixed to a rotary shaft, and disk-shaped cutters of the shredding unit are overlapped with each other.

Japanese Patent Application Laid-Open No. 2001-187399

In the biaxial rotary type crusher used in the sewage treatment plant, the disk shape cutter may be lost.

In addition, there is a problem that a missing portion of the disk-shaped cutter causes troubles in the downstream equipment such as a pump and a dehydrator.

The inventor of the present invention has made extensive studies on this problem. As a result, the inventor has found that a foreign matter trapping portion for trapping a missing portion of a disc shape cutter is provided at the rear end or the front end of the biaxial differential type crusher, It is possible to prevent the cutter from causing the breakage of the foreign matter, and the present invention has been accomplished.

Specifically, it is the following biaxial differential crushing system.

According to an aspect of the present invention, there is provided a biaxial differential crusher comprising: a biaxial differential crusher disposed at a front end of a device for crushing contaminants in water; and a biaxial differential crusher disposed between the biaxial differential crusher and the device for picking up foreign matter Side foreign-matter trapping portion which is provided on the downstream side of the discharge side foreign-matter trapping portion.

According to the present invention, the missing portion of the disk-shaped cutter can be caught by the outflow-side foreign material catching portion between the biaxial differential crusher and the device provided at the downstream end thereof. This makes it possible to avoid troubles such as stoppage of foreign objects in the downstream equipment such as a pump, a dehydrator, etc., even if the disc shape cutter is broken.

However, this outflow-side foreign-body trapping part can exhibit the same effect when foreign objects such as bolts pass through the biaxial differential crusher as well as foreign objects due to the loss of the disk-shaped cutter.

The present invention is further characterized in that the outlet-side foreign-body capturing section is provided in an outlet-side connecting pipe connected to the outlet side of the biaxial differential crusher.

Thereby, it is not necessary to perform special processing on the water pipe for untreated water connecting the biaxial differential crusher and the equipment provided at the rear end thereof when installing the outflow-side foreign body capturing part, and only the connection of the outflow- As shown in FIG.

The present invention is further characterized in that the outlet-side foreign-body trapping portion is provided with a valve for removing water.

Thus, when recovering the foreign matter trapped in the foreign-matter trapping portion on the outflow side, the water can be slowly removed from the foreign-matter trapping portion on the outflow-side using the valve for removing water. A large amount of water is filled in the outflow-side foreign matter capturing portion, and when the foreign matter outflow opening is opened, a large amount of water is simultaneously discharged, which poses a problem in the safety of the operation. In the present invention, water is removed from the outflow-side foreign object capturing portion by using the water removal valve, whereby a highly safe operation can be provided.

The present invention is further characterized in that the biaxial differential crusher is provided with a ceramic-made cutter.

As a result, the corrosion resistance of the disc-shaped cutter is increased, and the frequency of replacement of the cutter is reduced.

In addition, since the ceramic-made cutter tends to be easily broken, the effect of the foreign-body trapping portion on the outflow side is more remarkably exhibited.

According to the biaxial differential crushing system of the present invention, even if a discontinuity occurs in the disc-shaped cutter of the biaxial differential crusher, the missing portion is captured by the outflow-side foreign material catching portion, So that there is no possibility of causing trouble.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic illustration of a biaxial differential fracture system of an embodiment of the present invention as viewed in plan. Fig.
2 is a schematic explanatory view of a biaxial differential fracturing system according to an embodiment of the present invention when viewed from the front;
3 is a schematic explanatory diagram showing a configuration of a biaxial differential crusher according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a biaxial differential crushing system according to the present invention will be described in detail with reference to the drawings.

1 is a schematic explanatory view of a biaxial differential fracture system 1 according to an embodiment of the present invention when viewed from a plane, and Fig. 2 is a schematic explanatory view of the system 1 when viewed from the front.

[2-Axis Differential Shredding System]

The two-axis differential crushing system 1 of the present invention is used for crushing contaminants such as foreign matter contained in the for-treatment water such as sewage or sewage in a sewage treatment plant. Wastewater, which is water to be treated, includes impurities such as metals, such as aluminum cans, plastics, underwear, mops, and fibers such as cotton fabrics. Such impurities are contained in equipment such as pumps, dehydrators, Winding may cause breakdown. Accordingly, the biaxial differential crushing system 1 of the present invention is installed in the transport pipe of the for-treatment water, and the impurities are crushed before being put into the equipment such as a pump, a dehydrator, and a stirrer, .

As shown in Figs. 1 and 2, the biaxial differential crushing system 1 of the present invention comprises a biaxial differential crusher 2, an inlet connection pipe 3A connected to the front end of the biaxial differential crusher 2, An outflow side connecting pipe 3B connected to the downstream side of the biaxial differential crusher 2 and an outflow side foreign material catching portion 4B. The inflow side connecting pipe 3A is connected to the transfer pipe 16A for transferring the water to be treated including the contaminants and the outflow side connecting pipe 3B is connected to the two- And is connected to a transport pipe 16B for transporting treated water.

2, the inflow-side foreign-body capturing unit 4A and the outflow-side foreign-body capturing unit 4B are provided below the inflow-side connecting pipe 3A and the outflow-side connecting pipe 3B, respectively, Openings 8A, 8B (broken line portions in Fig. 1) are formed in the ceiling portion of each foreign matter capturing portion and the bottom portion of each connecting pipe. Each of the foreign matter capturing portions and the inside of each connecting tube communicates with each other through the openings 8A and 8B so that the foreign matter passing through the connecting pipe is settled to the foreign object catching portion from the openings 8A and 8B.

The inlet-side foreign-body capturing section 4A and the outlet-side foreign-body capturing section 4B seal the foreign matter outlets 5A and 5B and the foreign matter outflow ports 5A and 5B for taking out the foreign matter captured by the respective foreign- And water removing valves 6A and 6B for slowly discharging the water filled in each of the foreign material catching portions.

[2-Axis Differential Shredder]

3 is a schematic explanatory view of a biaxial differential crusher 2 according to an embodiment of the present invention. A two-axis differential type crusher (2) of the present invention comprises a drive motor (9), a cutter portion (13) and a casing (12), wherein the cutter portion (13) (13B).

The cutter unit 13A is composed of a drive shaft 10 driven by the drive motor 9 and a plurality of cutters 14A and spacers 15A arranged around the drive shaft 10. [

The cutter unit 13B includes a driven shaft 11 driven by the rotation of the drive shaft 10 and driven by a plurality of cutters 14B and spacers 15B disposed around the driven shaft 11, ).

The cutter units 13A and 13B are provided adjacent to each other so that the cutter 14A and the cutter 14B are engaged with each other and the contaminants are sheared by the sliding surfaces generated between the cutters 14A and 14B.

The cutters 14A and 14B used in the biaxial differential crusher 2 of the present invention are not limited as long as they are a cutter usually used in a biaxial differential type crusher, but a cutter made of ceramics or a metal is used. However, since the ceramic-made cutter tends to be easily broken, the effect of the outflow-side foreign body catching portion 4B connected to the rear end of the crusher 2 is remarkable.

The casing 12 accommodates the cutter unit 13 composed of the cutter units 13A and 13B and has an inlet through which the for-treatment water containing contaminants flows and an outlet through which the treated water subjected to the crushing treatment is discharged .

[Inflow side foreign matter capturing part]

The inlet-side foreign-body trapping portion 4A provided at the front end of the biaxial-differential crusher 2 has a structure for removing a high-hardness material such as a metal piece or a small stone, , It is possible to prevent these substances from entering the biaxial differential crusher 2. Thereby, an effect of preventing the cutter from being lost while crushing hard foreign matter is exhibited. When a cutter made of ceramics is used as the cutter, the effect of the inflow-side foreign-body trapping portion 4A is remarkably exhibited from the viewpoint of preventing the cutter from being broken.

The inlet-side foreign-body trapping portion 4A is a hollow vessel fixed to the lower portion of the inlet-side connecting pipe 3A as shown in Fig. An opening 8A is formed in the lower portion of the inlet-side connecting pipe 3A and the upper portion of the cavity container so that the inside thereof communicates with each other.

The action of removing foreign matter such as metal pieces or small stones by the foreign-matter-side foreign-matter capturing portion 4A of the present invention is to separate foreign matter having a high specific gravity by sedimentation. In other words, when the foreign matter passes through the untreated water inlet side connecting pipe 3A before flowing into the cutter portion 13 of the biaxial differential crusher 2, the foreign matter having a high specific gravity flows from the opening 8A formed at the lower portion to the inflow- And is settled in the inside of the portion 4A.

The foreign-body trapping portion 4A is provided with a foreign-body take-out port 5A for taking out the foreign object. The take-out port 5A is sealed by the lid portion 7A. The shape and size of the foreign matter outlet 5A and the lid portion 7A are not particularly limited but may be set so that hands and arms can be inserted so as to scrape foreign objects gathered on the bottom of the foreign object catching portion 4A on the inflow side Is preferable.

As shown in Figs. 1 and 2, the shape of the inflow-side foreign-body capturing portion 4A is preferably a cylindrical shape. In the case of the cylindrical shape, the foreign object collects at the center of the foreign-matter-side trapping part 4A on the inflow side, so that it is easily scratched.

It is preferable that the lid portion 7A is provided with a water removing valve 6A for discharging water from the inflow-side foreign body capturing portion 4A. The water removing valve 6A has a structure for slowly draining the water to be filled in the foreign-matter catching portion 4A on the inflow side and suppresses the flow of a large amount of the water to be treated when the lid portion 7A is opened , And secure work can be secured.

The installation position of the water removing valve 6A may be any position as far as it can drain the water to be treated of the inflowing foreign body capturing portion 4A. For example, the inflowing foreign body capturing portion 4A, As shown in Fig.

In the removal operation of the foreign object, the valve (not shown) provided in the transport pipe 16A is closed to prevent the for-treatment water from flowing into the inlet-side connecting pipe 3A, Slowly drains the treated water. After draining from the water removing valve 6A, the cover 7A is opened to take out the foreign matter from the foreign matter outlet 5A.

However, instead of closing the valve of the pipeline 16A, a valve for closing the opening 8A may be provided to prevent the for-treatment water from entering the inflow-side foreign-matter capturing portion 4A. By closing the opening 8A, it is possible to take out the foreign object without stopping the crushing process of the biaxial differential crushing system 1 of the present invention.

In the embodiment of the present invention, the inflow-side foreign matter capturing portion 4A is provided at the lower portion of the inflow-side connecting pipe 3A, but may be provided at any position on the front end of the biaxial differential crusher 2, An opening 8A may be formed in the lower portion of the transport pipe 16A and the inflow-side foreign-matter capturing portion 4A may be welded under the opening 8A. It is not necessary to process the transfer pipe 16A and the foreign matter is removed just before the biaxial differential crusher 2, so that the foreign-matter trapping portion 4A on the inflow side, The probability that the foreign matter will be mixed is small, and the inflow of the foreign matter can be suppressed more reliably.

[Inflow side connection pipe]

The inlet-side connecting pipe 3A of the present invention has a connecting pipe 16A for transporting the water to be treated to the biaxial differential crusher 2 and an inlet of the casing 12 of the biaxial differential crusher 2 And one of the tubes has the same diameter as that of the transport pipe 16A and the other tube has the same diameter as the inlet of the casing 12 of the biaxial differential type crusher 2.

[Outflow side foreign matter capturing part]

The outflow side foreign material catching portion 4B provided at the rear end of the biaxial differential type crusher 2 is a cutter piece in the case where the cutter of the biaxial differential type crusher 2 is missing or a metal piece passed through the crusher 2, A material having a high specific gravity such as a stone is removed from the treated water as a foreign matter and these substances can be prevented from flowing into a device such as a pump, a dehydrator, and an agitator provided at the downstream end.

The structure of the outflow-side foreign body capturing portion 4B of the embodiment of the present invention is a hollow vessel fixed to the lower portion of the outflow-side connection pipe 3B as in the inflowing-side foreign body capturing portion 4A, An opening 8B is formed in the lower portion of the connecting pipe 3B and the upper portion of the cavity container so that the inside thereof communicates with each other.

Further, a foreign matter outlet 5B for taking out the foreign object is formed, and the foreign matter outlet 5B is sealed by the lid portion 7B. A water removing valve 6B is provided in the lid portion 7B.

The structure and operation of this configuration are the same as those of the inflow-side foreign-body capturing unit 4A.

That is, the shape and size of the foreign matter outlet 5B and the lid portion 7B are not particularly limited and may be set so that the hand and the arm can be put in order to scrape foreign objects gathered on the bottom of the foreign object catching portion 4B on the outflow side And the shape of the outflow-side foreign body capturing portion 4B is preferably a cylindrical shape.

As another aspect of the water removing valve 6B, as in the case of the inflowing foreign body capturing portion 4A, the water removing valve 6B may be disposed anywhere that the untreated water in the outflow-side foreign body capturing portion 4B can be drained, For example, it may be provided at the bottom of the outflow-side foreign body capturing portion 4B.

Similarly, as for the foreign matter taking-out work, the valve (not shown) provided in the transfer pipe 16A is closed to prevent the treated water from flowing into the outlet connection pipe 3B, while the water removing valve 6B to slowly drain the water to be treated. After the drainage from the water removing valve 6B is completed, the lid part 7B is opened and the foreign object is taken out from the foreign matter outlet 5B.

The two-axis differential crushing system 1 of the present invention is provided with a valve for closing the opening 8B in the same manner as the inflowing-side foreign-body capturing unit 4A to prevent inflow of the treated water into the outflow- The foreign object may be taken out without stopping the crushing process of the object.

However, the shape of the outflow-side foreign body capturing portion 4B is not particularly limited as long as it is provided between the biaxial differential type crusher 2 and a device such as a pump and a dehydrator. An opening may be provided in the lower portion of the transport pipe 16B at the rear end of the biaxial differential type crusher 2 in the same manner as the inflow side foreign material catching portion 4A and may be provided below the opening pipe 16B, Or a connection pipe (not shown) for connecting the pipe 16B.

[Outflow side connecting pipe]

The outflow side connecting pipe 3B is a pipe for connecting the biaxial differential type crusher 2 to the downstream side transport pipe 16B. In other words, the outlet-side connecting pipe 3B has the same diameter as one of the outlet ports of the casing 12 of the biaxial differential crusher 2 and the other pipe diameter is the same as the rear-end feeding pipe 16B Diameter tube.

[device]

The device of the present invention is a device such as a pump, a dehydrator, a stirrer, etc. used in the entire water treatment field, and may be actually damaged if the device is possibly damaged due to the incorporation of unbranched particles.

The two-axis differential crushing system 1 of the present invention is provided with the outflow-side foreign body catching portion 4B between the two-axis differential crusher 2 and the various water treatment devices at the downstream, , It is possible to recover the fragment of the cutter of the biaxial differential crusher which is not intended to be recovered. This makes it possible to prevent the broken pieces of the cutter from flowing into other water treatment equipment and damaging the equipment even if a ceramic-made cutter which is excellent in corrosion resistance but somewhat liable to be lost is installed in the biaxial differential crushing system.

In the case where the cutter is missing, these fragments are accumulated in the outflow-side foreign body capturing portion 4B, so that the degree of damage of the cutter can be confirmed by confirming the accumulated foreign matter. Therefore, the biaxial differential crushing system of the present invention can provide a new management method of identifying the time of exchanging the cutter by viewing the fragment of the cutter accumulated in the outflow-side foreign body capturing portion 4B.

However, the configuration of the outflow-side foreign body capturing portion 4B of the present invention is advantageous in that it is possible to prevent damage to the downstream equipment due to fragments of the cutter and to detect the degree of damage of the cutter by retrieving the fragments of the cutter The present invention is not limited to a biaxial differential type crusher and can be applied to any crushing device such as a one-shaft type crusher.

The water removing valves 6A and 6B provided in the inflow-side foreign-body capturing portion 4A and the outflow-side foreign-body capturing portion 4B of the present invention are designed so that in the operation of taking out the foreign matter, It is possible to provide a safe working method.

From this point of view, however, the constitution of the water removing valve of the present invention is not limited to the biaxial differential type crusher but may be applied to any crushing device such as a single-shaft type crusher.

1 2-axis Differential Shredding System
2 2-Axis Differential Shredder
3A Inlet connection pipe
3B outlet connection pipe
4A inlet-
4B Outlet-side Foreign Body Capture Unit
5A, 5B Foreign matter outlet
6A, 6B Water removal valve
7A and 7B,
8A and 8B openings
9 drive motor
10 drive shaft
11 species coaxial
12 casing
13 cutter part
13A, 13B cutter unit
14A, 14B cutter
15A, 15B spacer
16A, 16B transport pipe

Claims (5)

A biaxial differential crusher disposed at the front end of the device for crushing the contaminants in the water,
Wherein the bifurcation type differential crusher is provided between the bifurcation differential crusher and the device,
Wherein the biaxial differential crushing system comprises: The method according to claim 1,
The foreign-body trapping portion is provided on the outflow-side connecting pipe connected to the outflow side of the biaxial differential crusher
Wherein the biaxial differential shredding system is a biaxial differential shredding system. The method according to claim 1 or 2,
The foreign-body trapping portion is provided with a water removing valve
Wherein the biaxial differential shredding system is a biaxial differential shredding system. The method according to claim 1 or 2,
The biaxial differential type crusher includes a ceramic cutter
Wherein the biaxial differential shredding system is a biaxial differential shredding system. A two-axis differential crusher for crushing the contaminants in the water,
Wherein the bifurcation type differential crusher includes a bifurcation differential crusher, and the bifurcation differential crusher is provided at a front end of the bifurcation differential crusher,
And,
The foreign-body trapping portion is provided with a water removing valve
Wherein the biaxial differential shredding system is a biaxial differential shredding system.

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