JP2000140704A - Centrifugal separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relax the restriction of an arranging space in a height direction by suppressing the bulkiness in the height direction, to reduce the number of parts to reduce cost and to prevent the adhesion of foreign matter to a take-in pipe of an untreated soln. at a time of cleaning. SOLUTION: When a foreign matter accumulated on the inner wall 37 of a cylindrical body 30 is cleaned, relative rotary means 36, 56, 66 rotate the cylindrical body 30 in the direction opposite to a scraper 50 to prevent the cylindrical body 30 from following the scraper 50 to rotate in the same direction as the scraper 50. The foreign matter passing through the lower opening 33 of the cylindrical body 30 to be discharged downwardly is prevented from adhering to an untreated soln. take-in means 70 arranged above the cylindrical body 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal separator for an untreated liquid taken into a cylinder, moving a scraper along the inner wall of the cylinder to remove the untreated liquid accumulated in the inner wall of the cylinder. The present invention relates to a centrifugal separator configured to remove foreign matter.
Examples of the untreated liquid include rolling oil, alkaline cleaning liquid, coolant oil, water, lubricating oil, and fuel oil.

[0002]

2. Description of the Related Art As a conventional centrifugal separator, for example, there is one as shown in FIG. That is, during operation, the cylinder 1
Is rotated around a cylinder axis by a belt driving means to centrifuge untreated liquid. The coupling shaft 3 and the coupling cylinder 2 are arranged on the upper side of the cylinder 1 in the cylinder axis direction so as to be continuous. A scraper 4 is arranged in the cylindrical body 1 and the scraper 4 is rotatably supported around a scraper shaft 5 having a concentric cylinder axis. During operation, the scraper 4 rotates together with the cylinder 1 due to friction with the cylinder 1. Foreign matter having a large specific gravity of the untreated liquid is forcibly settled and deposited on the inner wall of the cylindrical body and solidified by dehydration and deoiling.

[0003] Cleaning of the inside of the cylinder 1 is performed after confirming that the rotation of the cylinder 1 has stopped. At the same time that the shutter 10 for discharging foreign matter is opened, the coupling cylinder 2 lowers the coupling shaft 3 from the upper position, connects the coupling shaft 3 to the upper end of the scraper shaft 5, and drives the coupling shaft 3. Is rotated, the coupling shaft 3 and the scraper shaft 5 rotate integrally, and the scraper 4 rotates for a predetermined time, moves along the inner wall 1a of the cylinder 1, and accumulates on the inner wall 1a of the cylinder 1. Removed foreign matter.

After the cleaning of the inside of the cylinder 1, the shutter 10
Is closed and the coupling cylinder 2 is the coupling shaft 3
Is lifted up and removed from the rotation shaft 5 of the scraper 4, and then the cylinder 1 rotates around the cylinder axis again.

Further, when the scraper 4 is rotated in the cylindrical body 1 during cleaning of the cylindrical body 1, the cylindrical body 1 slides on the belt and rotates together with the scraper 4, or the cylindrical body 1 and the belt are separated. A stopper means 6 for suppressing the rotation of the cylinder 1 is specially provided so that the cylinder 1 does not rotate when it rotates together.

Further, the coupling shaft 3 and the coupling cylinder 2 are arranged on the upper side of the cylinder 1 in the direction of the cylinder axis, so that the untreated liquid is placed below the cylinder axis of the cylinder 1 in the axial direction. An untreated liquid intake pipe is arranged below the lower opening of the cylinder 1 so as to be introduced into the cylinder 1 from the side along the cylinder axis direction.

Further, the shape of the injection nozzle 7 is changed in accordance with the flow rate of the untreated liquid taken in from below the cylinder 1 so that the introduced untreated liquid is appropriately guided to the inner wall of the cylinder 1. Was.

[0008]

However, in such a conventional centrifuge, the coupling cylinder 2
In addition, since the coupling shaft 3 is arranged so as to be continuous with the upper side of the cylinder in the cylinder axis direction, the centrifuge is bulky in the cylinder axis direction (height direction). This bulkiness cannot be eliminated simply by disposing the coupling cylinder 2 and the like at the lower part of the centrifuge.

Further, it is necessary to provide the stopper means 6 specially in order to suppress the rotation of the cylindrical body 1 when cleaning the inside of the cylindrical body 1, so that the number of parts is increased by that much and the cost is increased.

Further, since the untreated liquid intake pipe is arranged below the lower opening of the cylindrical body 1, it is discharged downward through the lower opening of the cylindrical body 1 during cleaning. Foreign matter adheres to the untreated liquid intake pipe.

Further, since a plurality of injection nozzles 7 are prepared and are appropriately replaced according to the flow rate of the untreated liquid, the number of parts is increased, the cost is increased, and the shape of the injection nozzle 7 is not improved. If the flow rate of the processing liquid does not match the flow rate of the processing liquid, there is a problem that the unprocessed liquid may not be appropriately guided to the inner wall of the cylindrical body 1 and may cause dripping of the unprocessed liquid.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and is intended to alleviate restrictions on the installation space in the height direction by preventing the centrifuge from becoming bulky in the height direction. A centrifuge that can reduce the number of parts, reduce cost, prevent foreign substances from adhering to the intake pipe of untreated liquid during cleaning, and prevent the occurrence of dripping phenomenon It is intended to provide.

[0013]

The gist of the present invention to achieve the above object lies in the following inventions. [1] The untreated liquid taken into the cylinder (30) is centrifuged, and the scraper (50) is moved along the inner wall (37) of the cylinder (30) to move the inner wall of the cylinder (30). (3
7) a centrifugal separator for removing foreign substances in the untreated liquid deposited on the cylinder, a cylinder support means (22), a scraper support means (52), an untreated liquid intake means, and a relative rotation means ( 36, 56, 66), the cylinder support means (22) supports the cylinder (30) rotatably around a cylinder axis (34), and the scraper support means (52) The scraper (50) is rotatably supported around the cylinder shaft (34), and the untreated liquid take-up means moves the untreated liquid into the cylinder (30) from above the cylinder (30). The cylindrical body (30) along a cylindrical axis (34) direction;
The relative rotation means (36, 56, 66)
Is a centrifugal separator characterized in that the cylinder (30) and the scraper (50) can be relatively rotated.

[2] The untreated liquid taken into the cylinder (30) is centrifuged, and a scraper (50) is moved along the inner wall (37) of the cylinder (30) to move the cylinder (3).
0) is a centrifugal separator for removing foreign substances in the untreated liquid deposited on the inner wall (37),
2) In a device provided with a scraper support means (52), an untreated liquid intake means, and a relative rotation means (36, 56, 66), the cylinder support means (22) is provided with the cylinder (30). Is supported rotatably about a cylinder axis (34), and the scraper support means (52) rotatably supports the scraper (50) about a scraper axis (54), and a cylinder of the cylinder (30) is provided. The shaft (34) has a hollow portion, and the scraper shaft (54) penetrates through the hollow portion (34a) of the cylindrical shaft and has the same hollow portion, and the untreated liquid The intake means comprises an untreated liquid intake pipe (7) extending from above the cylinder (30) through the hollow portion (54a) of the scraper shaft and into the cylinder (30).
4) the relative rotation means (36, 56, 66)
Is a centrifugal separator characterized in that the cylinder (30) and the scraper (50) can be relatively rotated.

[3] The untreated liquid taken into the cylinder (30) is centrifuged, and the scraper (50) is moved along the inner wall (37) of the cylinder (30) to move the liquid.
0) is a centrifugal separator for removing foreign substances in the untreated liquid deposited on the inner wall (37),
2) In a device provided with a scraper support means (52), an untreated liquid intake means, and a relative rotation means (36, 56, 66), the cylinder support means (22) is provided with the cylinder (30). Is rotatably supported around a cylinder axis (34), and the scraper supporting means (52) rotatably supports the scraper (50) about the cylinder axis (34),
The untreated liquid intake means is configured to transfer the untreated liquid to the cylindrical body (30).
Taken into the cylinder (30) from above, along the direction of the cylinder axis (34) of the cylinder (30), and the relative rotation means (3
6, 56, 66) includes a cylinder (30) side interlocking member interlocking with the cylinder shaft (34), a scraper (50) side interlocking member interlocking with the scraper shaft (54), and a transmission member. The transmission member transmits the cylinder (30) -side interlocking member and the scraper (50) -side interlocking member to each other to relatively move the cylinder (30) and the scraper (50). A centrifugal separator, wherein the centrifugal separator moves to a non-transmission position in which the transmission member is not rotatable between the transmission member and the transmission member.

[4] The untreated liquid taken into the cylinder (30) is centrifuged, and a scraper (50) is moved along the inner wall (37) of the cylinder (30) to move the cylinder (3).
0) is a centrifugal separator for removing foreign substances in the untreated liquid deposited on the inner wall (37),
2) In a device provided with a scraper support means (52), an untreated liquid intake means, and a relative rotation means (36, 56, 66), the cylinder support means (22) is provided with the cylinder (30). Is supported rotatably about a cylinder axis (34), and the scraper support means (52) rotatably supports the scraper (50) about a scraper axis (54), and a cylinder of the cylinder (30) is provided. The shaft (34) has a hollow portion, and the scraper shaft (54) penetrates through the hollow portion (34a) of the cylindrical shaft and has the same hollow portion, and the untreated liquid The intake means comprises an untreated liquid intake pipe (7) extending from above the cylinder (30) through the hollow portion (54a) of the scraper shaft and into the cylinder (30).
4) the relative rotation means (36, 56, 66)
Is a cylindrical bevel gear (3) interlocking with the cylindrical shaft (34).
6), a scraper-side bevel gear (56) interlocked with the scraper shaft (54), and a drive bevel gear (6).
6), the cylinder-side bevel gear (36) and the scraper-side bevel gear (56) are arranged such that their bevel surfaces face each other, and the drive bevel gear (66) is A meshing position at which the body (30) and the scraper (50) can be relatively rotated by meshing with the body-side bevel gear (36) and the scraper-side bevel gear (56); and the cylinder-side bevel gear (36).
And a non-meshing position disengaged from the scraper-side bevel gear (56).

Next, the operation of the invention described in each of the above items will be described. In one configuration of the invention, during operation,
A cylinder (30) supported by cylinder support means (22)
When is rotated around the cylinder axis (34), the scraper (50) supported by the scraper support means (52) also rotates around the cylinder axis (34) due to friction. The untreated liquid is taken into the cylinder (30) from above the cylinder (30) by the untreated liquid intake means along the direction of the cylinder axis (34) of the cylinder (30).

When the cylinder (30) rotates around the cylinder axis (34) during operation, foreign matter having a large specific gravity in the untreated liquid is forcibly settled and deposited on the inner wall (37) of the cylinder (30). At the same time, it is dehydrated and deoiled and solidified.

At the time of cleaning for removing foreign substances accumulated on the inner wall (37) of the cylinder (30), after the rotation of the cylinder (30) is stopped,
The cylinder (30) and the scraper (50) may be relatively rotatable by the relative rotation means (36, 56, 66).

During cleaning, when the cylinder (30) rotates relative to the scraper (50), the scraper (5) rotates.
0) relatively moves along the inner wall (37) of the cylindrical body (30) to remove foreign matter deposited on the inner wall (37) of the cylindrical body (30). The removed foreign matter is discharged through the lower opening of the cylinder (30).

At this time, since the cylinder (30) relatively rotates in the direction opposite to the scraper (50), the cylinder (30) follows the scraper (50) and rotates in the same direction. There is no need to suppress the cylindrical body (30). At this time, foreign matter discharged through the lower opening of the cylindrical body (30) does not adhere to the untreated liquid intake means disposed on the upper side of the cylindrical body (30).

In another configuration of the present invention, in order to pipe the untreated liquid intake pipe (74) from above the cylindrical body (30),
A shaft having a hollow portion is used for the cylindrical shaft (34) and the scraper shaft (54).

That is, the untreated liquid intake pipe (74)
The hollow portion (54) of the scraper shaft is positioned from above the cylindrical body (30).
a) and extends into the barrel (30). The scraper shaft (54) passes through the hollow portion (34a) of the cylindrical shaft. Foreign matter discharged through the lower opening of the cylinder (30) during cleaning does not adhere to the untreated liquid intake pipe (74).

Further, since the untreated liquid does not need to be introduced from below the cylindrical body (30), an injection nozzle or the like for introducing the untreated liquid from below is not required, the number of parts is reduced, and the cost is reduced. can do. Further, since the untreated liquid is not introduced from below, when the shape of the injection nozzle does not match the flow rate of the untreated liquid, the untreated liquid is discharged into the cylinder (3).
It is possible to prevent the dripping phenomenon from occurring without being appropriately guided to the inner wall (37) of (0).

Further, in another configuration of the present invention, the relative rotation means (36, 56, 66) is constituted by a cylinder (30) side interlocking member, a scraper (50) side interlocking member, and a transmission member. ing.

During operation, the transmission member is moved to the non-transmission position, and does not mutually transmit the cylinder (30) side interlocking member and the scraper (50) side interlocking member. At this time,
When the cylinder (30) rotates around the cylinder axis (34), the scraper (50) follows the cylinder (30) by friction and becomes rotatable in the same direction as the cylinder (30).

At the time of cleaning, after the rotation of the cylindrical body (30) is stopped,
The transmission member is moved to the transmission position, and transmits the cylinder (30) side interlock member and the scraper (50) side interlock member to each other. At this time, the cylinder (30) and the scraper (50) rotate relatively. Thereby, the cylinder (3
0) follows the scraper (50) and does not rotate in the same direction as the scraper (50).
0) does not need to be suppressed.

The transmission members constituting the relative rotation means (36, 56, 66) include types such as a belt transmission member, a friction transmission member, a chain transmission member, and a gear transmission member. Further, the transmission member may be constituted by one member, or may be constituted by two or more members.

Needless to say, the shape and configuration of the cylinder (30) -side interlocking member and the scraper (50) -side interlocking member differ depending on the type of the transmission member.

Further, in another configuration of the present invention, the relative rotation means (36, 56, 66) includes a cylindrical bevel gear (3).
6), a scraper-side bevel gear (56), and a drive bevel gear (66). The cylinder-side bevel gear (36) and the scraper-side bevel gear (56) are arranged such that their bevel surfaces face each other.

During operation, the drive bevel gear (66) moves to the non-meshing position, and is disengaged from the cylinder-side bevel gear (36) and the scraper-side bevel gear (56), respectively. Therefore, when the cylinder (30) rotates around the cylinder axis (34), the scraper (50) follows the cylinder (30) and can rotate in the same direction as the cylinder (30).

At the time of cleaning, after the rotation of the cylinder (30) is stopped,
The drive bevel gear (66) moves to the meshing position, and the cylinder-side bevel gear (36) and the scraper-side bevel gear (5).
6). At this time, the drive bevel gear (66) rotates the cylinder (30) via the cylinder-side bevel gear, while rotating the scraper (50) relative to the cylinder (30) via the scraper-side bevel gear (56). I do. Thereby, the cylinder (30) does not follow the scraper (50) and rotates in the same direction as the scraper (50), and there is no need to suppress the cylinder (30).

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the present invention. As shown in FIGS. 1 to 3, the centrifuge has a base body 11 and a housing 21 which is a main body standing upright on the base body 11.

The base body 11 has a shutter mechanism housing 1
2, a cylinder 13 is fixed to an outer wall on one end side of the shutter mechanism accommodating section 12, and a shutter 14 is slidably mounted in a horizontal direction.

A cylindrical support means 22 as a bearing member is fixedly provided on the upper surface of the housing 21. A communication port 23 communicating with the shutter mechanism accommodating section 12 is opened at the bottom of the housing 21. The outer peripheral wall of the communication port 23, the bottom of the casing 21, and the inner wall of the casing 21 form a pool 24 for the treated liquid. The reservoir 24 communicates with a collection tank (not shown).

A cylindrical body 30 is provided in the housing 21.
This centrifuge is for centrifuging the untreated liquid taken into the cylinder 30.

The upper opening 31 of the cylindrical body 30 is closed by an upper lid member 32. The lower opening 33 of the cylindrical body 30 is open and faces the communication port 23. The cylindrical body 30 is formed so that the diameter gradually decreases from the center in the vertical direction to the lower opening 33.

The cylindrical body 30 has a cylindrical shaft 34 serving as a center of rotation. The cylindrical shaft 34 extends upward from the upper lid member 32 and is rotatably supported by the cylindrical body supporting means 22. A pulley 35 and a cylinder-side bevel gear 36 as a cylinder-side interlocking member are fixedly connected to the upper end of the cylinder shaft 34. An operation motor 40 is fixed to the outer wall of the housing 21, and an endless belt 42 is wound around the output pulley 41 and the pulley 35 of the operation motor 40. The cylindrical shaft 34 is a hollow shaft and has a hollow portion 34a.

A scraper 50 is housed in the cylinder 30. The scraper 50 is provided on the inner wall 37 of the cylindrical body 30.
This removes foreign matter in the untreated liquid deposited on the substrate. A plurality of scrapers 50 are arranged at equal intervals around the cylinder shaft 34. The outer edge of each scraper 50 is formed along the inner wall 37 of the cylinder 30.

On the inner edge of each scraper 50, a rectangular projection 51 having a predetermined width in the vertical direction is formed, and a disc-shaped connecting member 53 fixed to the lower end of the scraper shaft 54 is connected to each scraper 50. The projection 50 is fixed to the upper edge of the projection 51.

A disk-shaped shaking plate 55 is disposed below the connecting member 53. The outer peripheral edge of the shaking plate 55 is fixed to the lower edge of the protrusion 51 of each scraper 50. That is, between the connecting member 53 and the shaking plate 55, the introduction passage 58 having the predetermined width for guiding the untreated liquid to the scraper 50 and the inner wall 37 of the cylindrical body 30 is formed. The introduction path 58 rotates integrally with the cylinder 30.

The upper lid member 32 is provided with a scraper supporting means 52 as a bearing member for rotatably supporting the scraper shaft 54 of the scraper 50. The scraper shaft 54 is also a hollow shaft and has a hollow portion 54a.

The scraper shaft 54 extends through the hollow portion 34a of the cylindrical shaft 34 and extends upward. A scraper-side bevel gear 56, which is a scraper-side interlocking member, is fixed to the upper end of the scraper shaft 54.

As shown in FIGS. 1 and 4, the cylinder-side bevel gear 36 and the scraper-side bevel gear 56
Are arranged such that each bevel surface faces each other. A planetary bevel gear 57 having the same number of teeth as the drive bevel gear 66 is disposed between the opposing cylindrical bevel gear 36 and scraper-side bevel gear 56. A drive shaft 61, which is an output shaft of a drive motor 62, extends horizontally in a vertical gap between the bevel surface of the cylindrical bevel gear 36 and the bevel surface of the scraper-side bevel gear 56. A drive bevel gear 66 is supported by the drive shaft 61 so as to be movable between a meshing position and a non-meshing position. A link mechanism 68 for driving the drive bevel gear 66 between the meshing position and the non-meshing position is provided.

When the driving bevel gear 66 is in the meshing position, the planetary bevel gear 57 does not shift the positions of the opposing teeth of the cylinder-side bevel gear 36 and the scraper-side bevel gear 56. In the non-meshed position, it is disengaged from the cylinder-side bevel gear 36 and the scraper-side bevel gear 56.

The cylinder-side bevel gear 36, the scraper-side bevel gear 56, and the drive bevel gear 66 constitute a relative rotating means.

As shown in FIG. 1, the untreated liquid intake means 70
Has an untreated liquid intake pipe 74. Intake pipe 74
Extends from the upper end of the scraper shaft 54 above the cylindrical body 30 to the lower end of the scraper shaft 54 through the hollow portion 54a of the scraper shaft 54.
Leads to 8.

Next, the operation of the present embodiment will be described. When the operation motor 40 is started during the operation of the centrifuge, the torque of the output pulley 41 is transmitted to the pulley 35 via the endless belt 42, and the cylinder 30 rotates around the cylinder axis 34. At this time, the drive bevel gear 66 is in the non-meshing position, and the scraper side bevel gear 56 of the scraper 50 is
And the scraper shaft 54 is in a free state, so that the scraper 50
Following the rotation of 0, the cylinder 30 rotates in the same direction as the cylinder 30.

During operation, the untreated liquid is introduced into the cylinder 30 from above the cylinder 30 through the intake pipe 74 of the untreated liquid intake means 70. The untreated liquid that has passed through the intake pipe 74 flows down onto the shaking plate 55. The untreated liquid on the shaking plate 55 is radially shaken off on the shaking plate 55 by the rotation of the scraper 50, and
8, the scraper 50 and the inner wall 3 of the cylindrical body 30.
It is led to 7 side.

During operation, foreign matter having a large specific gravity in the untreated liquid taken into the cylindrical body 30 is settled and deposited on the inner wall of the cylindrical body 30 and solidified by dehydration and deoiling. FIG. 1 conceptually shows a state where the foreign matter and the treated liquid are separated.
The treated liquid (clean liquid) from which the foreign matter has been separated is the cylinder 3
It flows down to the lower opening 33 of the cylindrical body 30 along the inner wall 37 of the cylinder 30, and is released tangentially from the periphery of the lower opening 33 of the cylindrical body 30 because the cylindrical body 30 is rotating. The released treated liquid is temporarily stored in the storage part 24 and collected in a collection tank (not shown).

In the operation of the centrifuge, when the set time has elapsed, the operation motor 40 is stopped, and the rotation of the cylinder 30 is automatically stopped. Cleaning inside the cylinder 30 of the centrifuge is
This is performed based on the time chart shown in FIG.

That is, the scraper 50 is rotated in one cycle from normal rotation to stop, reverse rotation and stop. In each cycle, except for the stop time, the normal rotation time and the reverse rotation time are set to be gradually longer.

At the time of cleaning the inside of the cylinder 30, the driving motor 4
Although 0 is stopped, a clutch (not shown) is disengaged to bring the pulley 35 into a freely rotatable state (free state).

Next, the drive bevel gear 66 moves to the meshing position, and meshes with the cylinder-side bevel gear 36 and the scraper-side bevel gear 56, respectively. At this time, the driving bevel gear 66 is connected to the cylindrical body 30 via the cylindrical bevel gear 36.
While rotating the scraper 50 relative to the cylinder 30 via the scraper-side bevel gear 56.
That is, when the scraper 50 rotates in the forward direction, the cylinder 30 rotates in the reverse direction, and the scraper 5 rotates.
The outer edge of “0” relatively moves along the inner wall 37 of the cylindrical body 30.

As a result, the cylinder 30 is moved to the scraper 50.
Does not rotate in the same direction as the scraper 50, and there is no need to suppress the cylindrical body 30.

When the outer edge of the scraper 50 relatively moves along the inner wall 37 of the cylindrical body 30, foreign matter deposited on the inner wall 37 of the cylindrical body 30 is scraped off by the scraper 50. The foreign matter scraped off by the scraper 50 passes through the communication port 23 from the lower opening 33 of the cylindrical body 30 and is housed in the foreign matter housing through the shutter 14 opened in advance.

The untreated liquid intake pipe 74 passes through the hollow portion 54a of the scraper shaft 54 from above the cylinder 30 and passes through the cylinder 3
0, the lower opening 3 of the cylinder 30 during cleaning.
The foreign matter discharged to the foreign matter container through 3 does not adhere to the intake pipe 74 for the untreated liquid.

In the above embodiment, the relative rotating means is the cylindrical bevel gear 36, the scraper bevel gear 56, the drive bevel gear 66 and the planetary bevel gear 5
However, the present invention is not limited to this. For example, the drive bevel gear 66 may be omitted, and instead, the drive shaft 61 may be slidable, and the drive bevel gear 66 may be configured by a fitting mechanism fitted to the planetary bevel gear 57. Also, the planet bevel gear 57
, The bevel gear 36 on the cylinder side, the bevel gear 56 on the scraper side, and the drive bevel gear 66 may be used. Further, for example, a gear transmission mechanism including a cylinder-side bear interlocking with the cylinder and a scraper-side gear interlocking with the scraper may be provided to cause the cylinder 30 and the scraper 50 to relatively rotate.

Further, in FIGS. 1 and 2, the cylinder support means is located above the cylinder 30. However, the invention is not limited to this, and the cylinder support means may be provided as in the conventional example shown in FIG. Cylinder 3
By burying in the space 0, bulkiness in the height direction is further reduced. In this case, since the position of the shaking plate 55 and the introduction path 58 is located below the cylindrical body 30, it is more efficient to provide a discharge hole in the upper lid and guide the flow of the treated liquid to the collection tank through the discharge hole. It is a target.

[0060]

As described above, in one configuration of the present invention, when cleaning foreign matter deposited on the inner wall of the cylinder, the relative rotating means rotates the cylinder in the opposite direction to the scraper. Since the cylinder does not rotate in the same direction following the scraper, there is no need to hold down the cylinder,
For example, a stopper means or the like can be eliminated.
Further, at this time, foreign matter discharged downward through the lower opening of the cylinder does not adhere to the untreated liquid intake means disposed above the cylinder.

In another configuration of the present invention, the untreated liquid intake pipe extends from above the cylindrical body through the hollow portion of the scraper shaft into the cylindrical body. Foreign matter discharged through the lower opening of the untreated liquid does not adhere to the intake pipe for the untreated liquid. In addition, since the untreated liquid is not taken in from below the cylinder, the injection nozzle is not required, the number of parts is reduced, and the cost is reduced. It is possible to prevent a so-called dripping phenomenon that occurs when the flow rate of the untreated liquid does not match.

Further, in another configuration of the present invention, at the time of cleaning the inside of the cylinder, the transmission member moves to the transmission position to mutually transmit the cylinder-side interlocking member and the scraper-side interlocking member, and the cylinder and the scraper are moved. Are relatively rotated, the cylinder does not follow the scraper and rotates in the same direction as the scraper, and there is no need to suppress the cylinder, for example, the need for a stopper means.

Further, in another configuration of the present invention, when cleaning the inside of the cylinder, the drive bevel gear moves to the meshing position, meshes with the cylinder-side bevel gear and the scraper-side bevel gear, and the drive bevel gear is connected via the cylinder-side bevel gear. While rotating the cylinder, the scraper rotates relative to the cylinder via the scraper-side bevel gear, so the cylinder does not follow the scraper and rotate in the same direction as the scraper, and it is necessary to suppress the cylinder. Therefore, for example, a stopper means or the like can be eliminated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a centrifuge according to an embodiment of the present invention.

FIG. 2 is a front view of the centrifuge according to one embodiment of the present invention.

FIG. 3 is a perspective view of a main part of a relative rotation unit according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of a relative rotation unit according to one embodiment of the present invention.

FIG. 5 is a time chart at the time of cleaning the inside of the cylinder of the centrifuge according to one embodiment of the present invention.

FIG. 6 is a front view of a conventional centrifuge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Base body 12 ... Shutter mechanism accommodating part 13 ... Cylinder 14 ... Shutter 15 ... Foreign object container 21 ... Housing 22 ... Cylindrical body support means 23 ... Communication port 24 ... Accumulation part 30 ... Cylindrical body 31 ... Upper opening 32 ... Top lid Member 33 ... Lower opening 34 ... Cylindrical shaft 34a ... Hollow portion 35 ... Pulley 36 ... Cylindrical bevel gear 37 ... Inner wall 40 ... Operating motor 41 ... Output pulley 42 ... Endless belt 50 ... Scraper 51 ... Projection 52 ... Scraper support means 53 ... connecting member 54 ... scraper shaft 54a ... hollow portion 55 ... shaking plate 56 ... scraper side bevel gear 57 ... planetary bevel gear 58 ... introduction path 61 ... drive shaft 62 ... drive motor 66 ... drive bevel gear 68 ... link mechanism 70 ... not yet Processing liquid intake means 74 ... intake pipe

Continued on the front page (72) Inventor ▲ Taka ▼ Bridge ▲ Jin ▼ F-term (reference) 4D057 AA00 AB01 AC01 AC06 AD01 AE02 AF05 BA00 BC15 in Komaki City, Aichi Prefecture

Claims (4)

[Claims] An untreated liquid taken into a cylinder is centrifuged, and a scraper is moved along an inner wall of the cylinder to remove foreign substances in the untreated liquid deposited on the inner wall of the cylinder. A centrifugal separator provided with a cylinder support means, a scraper support means, an untreated liquid intake means, and a relative rotation means, wherein the cylinder support means is capable of rotating the cylinder about a cylinder axis. The scraper supporting means supports the scraper rotatably around the cylinder axis, and the untreated liquid intake means, the untreated liquid taking up the untreated liquid from above the cylinder in the cylinder axis direction of the cylinder. The centrifugal separator, wherein the relative rotation means is configured to be able to relatively rotate the cylinder and the scraper. 2. An untreated liquid taken into a cylinder is centrifuged, and a scraper is moved along an inner wall of the cylinder to remove foreign matter in the untreated liquid deposited on the inner wall of the cylinder. A centrifugal separator provided with a cylinder support means, a scraper support means, an untreated liquid intake means, and a relative rotation means, wherein the cylinder support means is capable of rotating the cylinder about a cylinder axis. The scraper supporting means supports the scraper rotatably around a scraper axis, the cylinder axis of the cylinder has a hollow portion, and the scraper axis is a hollow portion of the cylinder shaft. And has a hollow portion. The untreated liquid intake means is configured to take in an untreated liquid extending from above the cylinder through the hollow portion of the scraper shaft into the cylinder. Having a tube, said relative rotating hand The centrifuge, characterized in that is composed of said said cylinder scraper so as to be relatively rotated. 3. An untreated liquid taken into the cylinder is centrifuged, and a scraper is moved along the inner wall of the cylinder to remove foreign matter in the untreated liquid deposited on the inner wall of the cylinder. A centrifugal separator provided with a cylinder support means, a scraper support means, an untreated liquid intake means, and a relative rotation means, wherein the cylinder support means is capable of rotating the cylinder about a cylinder axis. The scraper supporting means supports the scraper rotatably around the cylinder axis, and the untreated liquid intake means, the untreated liquid taking up the untreated liquid from above the cylinder in the cylinder axis direction of the cylinder. The relative rotation means has a cylinder-side interlocking member that interlocks with the cylinder shaft, a scraper-side interlocking member that interlocks with the scraper shaft, and a transmission member. The member is the cylindrical body An interlocking member and the scraper-side interlocking member are mutually transmitted, and a transmission position at which the cylinder and the scraper can be relatively rotated, and the cylinder-side interlocking member and the scraper-side interlocking member are mutually transmitted. Centrifuge characterized by moving to a non-transmission position and not. 4. An untreated liquid taken into the cylinder is centrifuged, and a scraper is moved along the inner wall of the cylinder to remove foreign matter in the untreated liquid deposited on the inner wall of the cylinder. A centrifugal separator provided with a cylinder support means, a scraper support means, an untreated liquid intake means, and a relative rotation means, wherein the cylinder support means is capable of rotating the cylinder about a cylinder axis. The scraper supporting means supports the scraper rotatably around a scraper axis, the cylinder axis of the cylinder has a hollow portion, and the scraper axis is a hollow portion of the cylinder shaft. And has a hollow portion. The untreated liquid intake means is configured to take in an untreated liquid extending from above the cylinder through the hollow portion of the scraper shaft into the cylinder. Having a tube, said relative rotating hand Has a cylinder-side bevel gear linked to the cylinder axis, a scraper-side bevel gear linked to the scraper axis, and a drive bevel gear, and the cylinder-side bevel gear and the scraper-side bevel gear have respective bevel faces facing each other. The drive bevel gear meshes with the cylinder-side bevel gear and the scraper-side bevel gear, and a meshing position at which the cylinder and the scraper can relatively rotate, and the cylinder-side bevel gear And a non-meshing position disengaged from the scraper-side bevel gear.