JP7155694B2 - USAGE OF SOLID-LIQUID SEPARATOR AND SOLID-LIQUID SEPARATOR - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method of using a solid-liquid separator and the solid-liquid separator, and more particularly to a method of using a solid-liquid separator provided with a screw and the solid-liquid separator.

Conventionally, a solid-liquid separation device provided with a screw is known (see Patent Document 1, for example).

The above-mentioned Patent Document 1 discloses a screw conveyor (screw) that rotates with the rotation of a rotating shaft and feeds an object to be processed, a driving means that rotates the rotating shaft, a plurality of fixed rings, and between adjacent fixed rings. A solid-liquid separation device is disclosed which includes a layered filter body including a floating ring which is arranged in the outer periphery of the screw conveyor and moves with the rotation of the screw conveyor. A minute gap is formed between the floating ring and the fixed ring, and the stacked filter bodies are arranged so as to surround the screw conveyor.

JP-A-5-228695

However, in Patent Document 1, the floating ring is arranged between the adjacent fixed rings, so the position of the screw conveyor where the screw conveyor and the floating ring are in contact is limited to between the adjacent fixed rings. That is, the screw conveyor at the position facing the fixed ring does not come into contact with either the fixed ring or the floating ring. On the other hand, the screw conveyor located between adjacent fixed rings is always in contact with the floating ring. For this reason, the screw conveyor at the position between the fixed rings always rubs against the floating ring and wears, so the screw conveyor at the position between the fixed rings (the position where the floating ring is arranged) is more difficult than the position facing the fixed ring. ) wear progresses. As the wear of the screw conveyor between the fixed rings progresses, the radial movable range of the floating ring becomes smaller, so the screw conveyor needs to be replaced. As a result, there is a problem that it is difficult to extend the life of the screw conveyor (screw).

The present invention has been made to solve the above problems, and one object of the present invention is to provide a method of using a solid-liquid separator capable of extending the life of a screw caused by wear, and a method of using a solid-liquid separator. Another object is to provide a liquid separation device.

In order to achieve the above object, a method of using a solid-liquid separation apparatus in a first aspect of the present invention comprises a screw that rotates with the rotation of a rotating shaft to feed an object to be processed, a motor that drives the rotating shaft to rotate, A plurality of fixed plates and a movable plate disposed between adjacent fixed plates and in contact with the outer periphery of the screw and moving with the rotation of the screw, wherein a filtering groove is formed between the adjacent fixed plates to surround the screw. A method of using a solid-liquid separation device for separating an object to be processed into a liquid component and a solid component, comprising: a stacked filter body arranged in a layered filter body; The position of the screw is changed in the direction of the axis of rotation by a distance different from the distance between adjacent fixed plates to change the contact position of the movable plate of the screw during operation .

In the method of using the solid-liquid separation device according to the first aspect of the present invention, with the configuration described above, the position of the screw in contact with the movable plate can be changed. can be suppressed. In other words, it is possible to disperse the locations where the screw is worn out over the entire screw, so that it is possible to extend the operating time until the screw is worn out and needs to be replaced. As a result, the life of the screw due to wear can be extended. Further, by changing the contact position of the movable plate of the screw by changing the position by a distance different from the distance between the adjacent fixed plates in the rotation axis direction of the screw with respect to the stacked filter bodies, the screw and the movable plate are brought into contact with each other. Since it is possible to prevent the position of the screw that has been in contact from being moved again to the position of another movable plate, it is possible to effectively prevent the wear of only a portion of the screw from progressing. In addition, only by inserting the position adjusting member after a predetermined operating time has elapsed, the position of the screw with respect to the stacked filter bodies can be accurately changed by the thickness of the position adjusting member. Thereby, the position of the screw in contact with the movable plate can be changed with high accuracy.

In this case, preferably, a connecting portion between a supporting member that rotatably supports the rotating shaft and the stacked filter bodies, a connecting portion between the stacked filter bodies and the discharge section of the material to be processed, and a speed reducer connected to the rotating shaft and the motor and the connecting portion between the motor-side portion and the screw-side portion of the rotary shaft, to change the position of the screw relative to the stacked filter bodies in the rotation axis direction. According to this configuration, the connecting portion between the support member that rotatably supports the rotating shaft and the stacked filter bodies, the connecting portion between the stacked filter bodies and the discharge section of the material to be processed, the rotating shaft and the speed reducer connected to the motor By inserting the position adjusting member into the connecting portion with the machine or the connecting portion between the motor-side portion and the screw-side portion of the rotating shaft, the movable plate can be easily separated without disassembling the solid-liquid separator as a whole. The position of the contacting screw can be changed.

In the method of using the solid-liquid separation device according to the first aspect , preferably, the screw is movable by changing its position by a distance smaller than the distance between the adjacent fixed plates in the direction of the axis of rotation of the screw with respect to the stacked filter bodies. Change the contact position of the plate. With this configuration, the position of the screw is moved by the minimum necessary amount, so it is possible to suppress an increase in the work load and the size of the position adjusting member.

In the method of using the solid-liquid separation apparatus in the first aspect, preferably, the position of the screw in the rotation axis direction with respect to the stacked filter bodies is changed for each operation time within a predetermined range, and the contact position of the movable plate of the screw is changed. change. According to this structure, the position of the screw in contact with the movable plate can be changed periodically, so that it is possible to effectively suppress wear of only a portion of the screw.

A solid-liquid separation device according to a second aspect of the present invention is a solid-liquid separation device for separating an object to be treated into a liquid component and a solid component, and comprises a screw that rotates as a rotating shaft rotates and feeds the object to be treated. , a motor for rotationally driving a rotating shaft, a plurality of fixed plates, and a movable plate disposed between adjacent fixed plates and in contact with the outer periphery of the screw and moving as the screw rotates, and between the adjacent fixed plates A layered filter body in which a filtration groove is formed and arranged so as to surround the screw, and a position where the screw is inserted to change the position of the screw relative to the layered filter body in the rotation axis direction by a distance different from the distance between the adjacent fixed plates. an adjustment member.

In the solid-liquid separation device according to the second aspect of the present invention, with the configuration described above, it is possible to change the position of the screw in contact with the movable plate. can be done. In other words, it is possible to disperse the locations where the screw is worn out over the entire screw, so that it is possible to extend the operating time until the screw is worn out and needs to be replaced. As a result, it is possible to provide a solid-liquid separator capable of extending the life of the screw due to wear. In addition, by changing the position by a distance different from the distance between the adjacent fixed plates, the position of the screw in contact with the movable plate is suppressed from moving again to the position of another movable plate. Therefore, it is possible to effectively suppress wear of only a portion of the screw.

In the solid-liquid separator according to the second aspect, the position adjusting member is preferably configured to be detachable from the solid-liquid separator main body including the layered filter body and the screw. With this configuration, the position of the screw with respect to the stacked filter bodies can be accurately changed by the thickness of the position adjusting member depending on whether the position adjusting member is inserted or removed. Thereby, the position of the screw in contact with the movable plate can be changed with high accuracy.

According to the present invention, as described above, it is possible to provide a method for using a solid-liquid separator and a solid-liquid separator that can extend the life of a screw caused by wear.

It is the schematic which showed the solid-liquid separation apparatus by one Embodiment of this invention. It is the figure which showed the laminated filter body of the solid-liquid separation apparatus by one Embodiment of this invention. It is the figure which showed the position adjustment member of the solid-liquid separation apparatus by one Embodiment of this invention. FIG. 4 is a diagram for explaining a change in contact position between a screw and a movable plate of the solid-liquid separation device according to one embodiment of the present invention; FIG. 4 is a diagram for explaining insertion of a position adjusting member of the solid-liquid separation device according to one embodiment of the present invention; FIG. 5 is a diagram for explaining an insertion position of a position adjusting member of a solid-liquid separation device according to a modified example of one embodiment of the present invention; FIG. 5 is a diagram of a rotation shaft for explaining an insertion position of a position adjusting member of a solid-liquid separation device according to a modification of one embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

(Configuration of solid-liquid separator)
A solid-liquid separator 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

As shown in FIG. 1, a solid-liquid separation device 100 according to one embodiment of the present invention includes a rotating shaft 1, a screw 2, a layered filter body 3, a motor 4, a raw liquid supply port 5, and a discharge port 6. , a support frame 7 and a washing tube 8 . The solid-liquid separation device 100 also includes a position adjusting member 9 . As shown in FIG. 1, the solid-liquid separation device 100 is configured such that a raw liquid (object to be processed) is supplied from a raw liquid supply port 5 . Further, the solid-liquid separation device 100 is configured to separate the material to be processed (undiluted liquid) into a liquid component (filtrate) and a solid component (dehydrated cake). Further, the solid-liquid separation device 100 is configured to discharge the separated liquid component (filtrate) from the bottom. The solid-liquid separation device 100 is also configured to discharge the separated solid component (dehydrated cake) from the discharge port 6 .

A rotating shaft 1 is driven to rotate by driving a motor 4 . Further, the rotary shaft 1 is configured to rotate forward and backward. The rotating shaft 1 is made of a metal material. The rotating shaft 1 is arranged to extend along the X direction. The rotating shaft 1 is arranged so as to extend substantially horizontally. The rotating shaft 1 is formed so as to gradually become thicker from the undiluted solution supply port 5 toward the discharge port 6 . In other words, the rotating shaft 1 is formed such that the diameter gradually increases from the upstream side toward the downstream side (in the X1 direction) in the direction of feeding the object to be processed. As a result, the passage of the object to be processed narrows from the upstream side to the downstream side.

The rotary shaft 1 is rotatably supported by a bearing 11 at its end on the undiluted solution supply port 5 side (X2 direction side). It should be noted that the rotary shaft 1 is not restricted in movement in the rotation axis direction (X direction) with respect to the bearing 11 . That is, by releasing other fixings, the rotating shaft 1 can be moved in the direction of the rotation axis with respect to the bearing 11 . Further, the rotating shaft 1 is connected to the speed reducer 41 at the end on the side of the discharge port 6 (X1 direction side). A motor 4 is connected to the reduction gear 41 . The speed reducer 41 is supported by a support member 42 .

A screw 2 is provided on the rotating shaft 1 . Specifically, the screw 2 is spirally provided along the rotating shaft 1 . Moreover, the screw 2 is formed by one continuous blade. The screw 2 rotates as the rotating shaft 1 rotates. Further, the screw 2 is configured to feed the workpiece by rotating. Specifically, the screw 2 is configured to send the material to be processed from the undiluted solution supply port 5 side toward the discharge port 6 side (in the X1 direction) by forward rotation of the rotating shaft 1 . Further, the screw 2 is configured to send the material to be treated from the discharge port 6 side toward the undiluted solution supply port 5 side (in the X2 direction) by rotating the rotating shaft 1 in the reverse direction. In the dehydration process, the screw 2 is rotated at low speed. For example, the screw 2 is forwardly rotated at a rotational speed of approximately 0.5 rpm to 5 rpm. Further, when performing the concentration process, for example, the screw 2 is forwardly rotated at a rotational speed of about 10 rpm to 25 rpm.

The screw 2 is made of a metal material. The pitch of the screw 2 is configured to gradually decrease from the upstream side to the downstream side (in the X1 direction) in the direction of feeding the material to be processed in the stacked filter bodies 3 . That is, the screw 2 is formed such that the distance in the X direction gradually decreases from the undiluted solution supply port 5 toward the discharge port 6 . The screw 2 is provided inside the laminated filter body 3 .

The radially outer side of the screw 2 is made of a harder metal material than the radially inner side. A radially inner portion of the screw 2 is made of stainless steel. A radially outer portion of the screw 2 is made of a special alloy harder than stainless steel. Thereby, it is possible to suppress wear of the outer portion of the screw 2 .

The laminated filter body 3 includes a plurality of fixed plates 31 and a plurality of movable plates 32, as shown in FIG. The laminated filter body 3 also includes spacers 33 . The laminated filter body 3 is arranged so as to surround the screw 2 . Specifically, in the laminated filter body 3 , the screw 2 is inserted through the through hole 311 of the fixed plate 31 and the through hole 321 of the movable plate 32 . The laminated filter body 3 has a multi-plate structure in which fixed plates 31 and movable plates 32 are alternately laminated in the X direction.

The plurality of fixing plates 31 each have screw holes 312 into which the spacers 33 are screwed, in addition to the through holes 311 through which the screws 2 are inserted. The spacer 33 is configured to be screwed into the screw hole 312 so as to hold the gap D1 in the X direction between the fixing plates 31 adjacent to each other. As a result, a filtration groove S with a gap D<b>1 is formed between adjacent fixing plates 31 . Also, the plurality of fixed plates 31 are fixed to the support frame 7 . The plurality of fixed plates 31 are configured to maintain a stacked state with the movable plate 32 by being fixed to the support frame 7 . The fixed plate 31 is made of a metal material. For example, the fixing plate 31 is made of stainless steel.

The movable plate 32 is arranged between adjacent fixed plates 31 . A thickness D2 of the movable plate 32 in the X direction is smaller than the gap D1. Therefore, filtered water outflow grooves G of gaps (D1-D2) are formed in portions of the filtration grooves S between the adjacent fixed plates 31 excluding the movable plate 32. As shown in FIG. That is, the filtrated water outflow groove G is a gap portion between the two movable plates 32 arranged adjacent to each other in the X direction and the fixed plate 31 . Therefore, the movable plate 32 is configured to be swingable in the axial direction (X direction) of the rotating shaft 1 .

The movable plate 32 is configured such that the inner peripheral surface forming the through hole 321 is in contact with the outer peripheral portion of the screw 2 and constantly moves in the circumferential and radial directions of the rotating shaft 1 as the screw 2 rotates. In this manner, by rotating the screw 2, the movable plate 32 is moved in the Z direction while always swinging in the X direction within the filtration groove S, thereby suppressing clogging of the filtered water outflow groove G. It is possible. That is, the solid-liquid separation device 100 can self-clean the filtered water outflow groove G (filtration groove S). The movable plate 32 is made of a metal material. For example, the movable plate 32 is made of stainless steel. That is, the movable plate 32 is made of a material softer than the outer portion of the screw 2 .

As shown in FIG. 1, the motor 4 is provided at one end (X1 direction side end) of the rotating shaft 1 in the axial direction (X direction). That is, the motor 4 is provided on the outlet 6 side of the rotating shaft 1 . The motor 4 is configured to rotationally drive the rotating shaft 1 . Specifically, the motor 4 is configured to rotate the rotary shaft 1 via a speed reducer 41 . The speed reducer 41 reduces the speed of the output of the motor 4 and transmits it to the rotary shaft 1 at a speed reduction ratio of about 1/720, for example.

The discharge port 6 is provided with a pipe portion 61 and a back pressure plate 62 . The pipe portion 61 is connected to the stacked filter bodies 3 and configured to guide the discharged material to be treated to the discharge port 6 . The tube portion 61 is arranged so as to surround the screw 2 . The back pressure plate 62 is arranged near one end of the screw 2 on the discharge port 6 side of the object to be processed. Further, the back pressure plate 62 is configured to apply pressure to the solid component of the material to be processed by the solid-liquid separation device 100 . Thereby, it is possible to increase the pressure on the downstream side (X1 direction side) of the stacked filter body 3 .

The support frame 7 is configured to fix a plurality of fixing plates 31 to each other. Specifically, the support frame 7 is arranged in contact with the outer peripheral end portions of the plurality of fixing plates 31 . Further, the support frame 7 extends along the axial direction (X direction) of the rotating shaft 1 . A plurality (for example, three) of contact portions of the support frame 7 with the fixed plate 31 are provided in the circumferential direction of the fixed plate 31 . Further, the support frame 7 is provided with a plurality of reinforcing plates 71 . The reinforcing plate 71 reinforces the laminated filter body 3 . The reinforcing plate 71 is inserted in the middle of the laminated filter body 3 in which the fixed plate 31 and the movable plate 32 are laminated. The reinforcing plate 71 has an annular shape. The reinforcing plate 71 is made of a metal material. Further, the reinforcing plate 71 is formed to be thicker (length in the X direction) than the fixed plate 31 and the movable plate 32 . Also, the reinforcing plate 71 is fixed to the support frame 7 .

The washing pipe 8 is configured to pass water for washing the layered filter body 3 . Further, the washing pipe 8 is connected to an external water source, and is configured to jet water for washing from the washing pipe 8 toward the laminated filter body 3 . As a result, the solid component of the material to be treated that has leaked out of the stacked filter bodies 3 through the filtered water outflow grooves G can be removed from the stacked filter bodies 3 .

The position adjusting member 9 is inserted to change the position of the screw 2 in the rotation axis direction (X direction) with respect to the stacked filter bodies 3 . Specifically, the position adjusting member 9 is inserted into the connecting portion between the support member 42 that rotatably supports the rotating shaft 1 and the stacked filter bodies 3 to adjust the position of the screw 2 in the rotation axis direction with respect to the stacked filter bodies 3 . change. Further, the position adjusting member 9 is configured to be detachable from the solid-liquid separator main body 101 including the stacked filter bodies 3 and the screw 2 . Further, as shown in FIG. 4, the position of the screw 2 is changed by a distance different from the distance D3 <center-to-center distance> between the adjacent fixing plates 31 in the rotation axis direction of the screw 2 with respect to the stacked filter bodies 3. The contact position of the movable plate 32 is changed. For example, the contact position of the movable plate 32 of the screw 2 is changed by a distance D4 smaller than the distance D3 (center-to-center distance) between the adjacent fixed plates 31 in the rotation axis direction of the screw 2 with respect to the laminated filter body 3. change.

In addition, the contact position of the screw 2 with the movable plate 32 is changed by changing the position of the screw 2 relative to the stacked filter bodies 3 in the rotation axis direction for each operation time within a predetermined range. For example, when organic sludge is treated as the object to be treated, the position of the screw 2 in the rotation axis direction with respect to the stacked filter bodies 3 is changed every time the apparatus is operated for about 2500 hours.

As shown in FIG. 9, the position adjusting members 9 are arranged on both sides of the stacked filter body 3 in the Y direction. Further, the position adjusting member 9 has a predetermined thickness in the rotation axis direction (X direction) of the screw 2 . For example, the positioning member 9 has a thickness of approximately 3 mm. That is, when the position adjusting member 9 is inserted, the position of the screw 2 in the rotation axis direction (X direction) with respect to the stacked filter bodies 3 changes by about 3 mm compared to when the position adjusting member 9 is not inserted. Further, the position adjusting member 9 is provided with a concave portion 91 that avoids the hole 63 into which the fastening member is inserted, in order to insert and arrange it from the Y direction.

(Position adjustment method)
Next, a method for adjusting the position of the screw 2 with respect to the stacked filter bodies 3 will be described with reference to FIG. In this position adjustment method, the position of the screw 2 in the rotational axis direction (X direction) with respect to the filter stack 3 is changed to change the contact position of the screw 2 with the movable plate 32 during operation.

First, the fixation of the rotating shaft 1 and the screw 2 to the stacked filter bodies 3 is released. Specifically, the fixation of the support member 42 to the stacked filter bodies 3 is released. This makes it possible to move the rotating shaft 1 and the screw 2 in the X direction with respect to the stacked filter bodies 3 .

Next, the motor 4 is rotated in the opposite direction to that during operation, and the rotating shaft 1 and the screw 2 are rotated in the opposite direction. As a result, the helical structure of the screw 2 moves (pulls out) the rotating shaft 1 and the screw 2 relative to the stacked filter bodies 3 in the X1 direction. At this time, the rotating shaft 1 and the screw 2 are moved by the thickness of the position adjusting member 9 or more.

With the rotating shaft 1 and the screw 2 pulled out, the position adjusting member 9 is inserted between the supporting member 42 and the stacked filter bodies 3 . Then, the motor 4 is rotated forward to rotate the rotating shaft 1 and the screw 2 forward. As a result, the rotating shaft 1 and the screw 2 are moved (pulled in) in the X2 direction with respect to the stacked filter bodies 3 . At this time, the rotating shaft 1 and the screw 2 are arranged on the X1 direction side as compared with the original state by the position adjustment member 9 inserted.

After that, the rotating shaft 1 and the screw 2 are fixed to the stacked filter bodies 3 . Specifically, the support member 42 is fixed to the laminated filter body 3 . After the position of the screw 2 is adjusted, it is operated again for a predetermined period of time (for example, 2500 hours), then the position adjusting member 9 is removed and the screw 2 is rotated forward to return to its original position. Further, after that, if the machine is operated for a predetermined period of time (for example, 2500 hours), the screw 2 is reversely rotated again and moved. Similarly, this process is repeated. Although the process of alternately repeating movement in the reverse rotation direction→movement in the forward rotation direction has been described, if there is a margin in the shaft length on the motor 4 side (discharge port 6 side), movement in the reverse rotation direction is possible. may be repeated. Further, the length (distance) of movement may be appropriately changed based on the distance D3 of the fixing plate 31, the length of the shaft of the screw 2, and the like.

(Effect of Embodiment)
The following effects can be obtained in this embodiment.

In this embodiment, as described above, the contact position of the screw 2 with the movable plate 32 during operation is changed by changing the position of the screw 2 relative to the stacked filter bodies 3 in the rotation axis direction. As a result, it is possible to change the position of the screw 2 in contact with the movable plate 32, so that it is possible to suppress the wear of only a portion of the screw 2. In other words, since the locations where the screw 2 is worn can be distributed over the entire screw 2, the operation time until the screw 2 is worn out and needs to be replaced can be extended. As a result, the life of the screw 2 due to wear can be extended.

Further, in this embodiment, as described above, the position adjusting member 9 is inserted to change the position of the screw 2 relative to the stacked filter bodies 3 in the rotation axis direction. As a result, the position of the screw 2 with respect to the stacked filter bodies 3 can be accurately changed by the thickness of the position adjusting member 9 only by inserting the position adjusting member 9 after a predetermined operating time has elapsed. As a result, the position of the screw 2 in contact with the movable plate 32 can be changed with high accuracy.

Further, in this embodiment, as described above, the position of the movable plate 32 of the screw 2 is changed by a distance different from the distance between the adjacent fixed plates 31 in the rotation axis direction of the screw 2 with respect to the stacked filter bodies 3 . change the contact position of As a result, it is possible to prevent the position of the screw 2 where the screw 2 and the movable plate 32 are in contact with each other from moving again to the position of the other movable plate 32, so that only a portion of the screw 2 wears. can be effectively suppressed.

Further, in this embodiment, as described above, the position of the movable plate 32 of the screw 2 is changed by a distance smaller than the distance between the adjacent fixed plates 31 in the rotation axis direction of the screw 2 with respect to the stacked filter bodies 3 . change the contact position of As a result, the position of the screw 2 is moved by the minimum necessary amount, so that it is possible to suppress an increase in the work load and the size of the position adjusting member 9 .

Further, in this embodiment, as described above, the contact position of the screw 2 with the movable plate 32 is changed by changing the position of the screw 2 relative to the stacked filter bodies 3 in the rotation axis direction for each operation time within a predetermined range. Let As a result, the position of the screw 2 in contact with the movable plate 32 can be changed periodically, so that it is possible to effectively suppress wear of only a portion of the screw 2 .

Further, in the present embodiment, as described above, the position adjusting member 9 is configured to be detachable from the solid-liquid separation device main body 101 including the stacked filter bodies 3 and the screws 2 . As a result, the position of the screw 2 with respect to the stacked filter bodies 3 can be accurately changed by the thickness of the position adjusting member 9 depending on whether the position adjusting member 9 is inserted or removed. Thereby, the position of the screw 2 in contact with the movable plate 32 can be changed with high accuracy.

(Modification)
It should be noted that the embodiments disclosed this time should be considered as examples and not restrictive in all respects. The scope of the present invention is indicated by the scope of the claims rather than the description of the above-described embodiments, and includes all modifications (modifications) within the meaning and scope equivalent to the scope of the claims.

For example, in the above-described embodiment, the position adjustment member 9 is inserted into the connecting portion between the support member 42 and the stacked filter bodies 3, but the present invention is not limited to this. In the present invention, as shown in FIG. 6, the position adjusting member 9 may be inserted into the connecting portion (position 1) between the speed reducer 41 and the support member 42 . Further, the position adjusting member 9 may be inserted into the connecting portion (position 2) between the stacked filter body 3 and the discharge portion 64 of the material to be treated. Further, as shown in FIG. 7, the position adjusting member 9 may be inserted into the connecting portion (position 3) between the rotary shaft 1 and the speed reducer 41 connected to the motor 4. FIG. Alternatively, the position adjusting member 9 may be inserted into the connecting portion (portion 4) between the motor-side portion 12 and the screw-side portion 13 of the rotating shaft 1. FIG. The motor-side portion 12 and the screw-side portion 13 are connected by fixing flanges 121 and 131 .

Further, in the above embodiment, an example in which two position adjustment members are arranged in the horizontal direction (Y direction) was shown, but the present invention is not limited to this. In the present invention, one position adjusting member may be provided, or three or more may be provided. Also, a plurality of position adjusting members having different thicknesses may be prepared. Also, the position adjusting members may be inserted overlapping in the thickness direction. This makes it possible to vary the amount of change in the position of the screw relative to the stacked filter bodies in the rotation axis direction.

Further, in the above embodiment, an example in which two position adjustment members are arranged in the horizontal direction (Y direction) was shown, but the present invention is not limited to this. In the present invention, the position adjustment members may be arranged in the vertical direction (Z direction).

Further, in the above-described embodiment, an example of a configuration in which the position of the screw in the rotation axis direction with respect to the stacked filter bodies is changed by attaching and detaching the position adjusting member has been shown, but the present invention is not limited to this. In the present invention, the position of the screw in the rotation axis direction with respect to the stacked filter bodies may be changed by changing the thickness of the position adjusting member. For example, the positioning member may be made of a material that shrinks over time with the application of pressure. For example, the alignment member may compress and shrink over time, or melt and shrink due to a change in state (solid to gas or solid to liquid). As a result, the position of the screw in the rotational axis direction with respect to the stacked filter bodies is changed as the position adjusting member shrinks. That is, since the screw rotates forward during operation, a force acts in the direction of entering the stacked filter bodies in the direction of the rotation axis. As the thickness of the position adjusting member gradually decreases, the screw is moved accordingly.

Also, the position adjusting member may be formed of a member that easily expands and contracts due to a temperature difference. In other words, the position adjusting member may be made of a material having a larger coefficient of thermal expansion than other members such as the stacked filter bodies and screws. As a result, the thickness of the position adjusting member changes due to the influence of heat generated during operation and seasonal temperature changes, so the position of the screw relative to the stacked filter bodies in the rotation axis direction changes.

Further, in the above-described embodiment, an example in which the rotating shaft is formed so as to gradually become thicker from the undiluted solution supply port toward the discharge port has been shown, but the present invention is not limited to this. In the present invention, the rotating shaft may be formed with a substantially uniform thickness from the undiluted solution supply port toward the discharge port.

Further, in the above-described embodiment, an example in which the motor is arranged on the outlet side of the rotating shaft has been shown, but the present invention is not limited to this. In the present invention, the motor may be arranged on the undiluted solution supply port side of the rotating shaft.

Further, in the above embodiment, an example in which the rotating shaft is arranged substantially horizontally has been shown, but the present invention is not limited to this. In the present invention, the axis of rotation may be inclined. In this case, it is desirable to incline the undiluted solution supply port side downward and the discharge port side upward. Alternatively, the rotating shaft may be arranged vertically.

Moreover, in the above-described embodiment, an example of a configuration in which a spacer is provided between adjacent fixed plates to form a filtering groove between the fixed plates, but the present invention is not limited to this. In the present invention, filtering grooves may be formed between fixed plates without providing spacers. For example, the fixed plates may be provided with projections to position adjacent fixed plates, or all the fixed plates may be fixed by passing through bolts.

REFERENCE SIGNS LIST 1 rotary shaft 2 screw 3 laminated filter body 4 motor 31 fixed plate 32 movable plate 41 speed reducer 42 support member 64 discharge section 100 solid-liquid separator S filtration groove

Claims (6)

A screw that rotates along with the rotation of the rotating shaft and feeds the workpiece, a motor that rotates the rotating shaft, a plurality of fixed plates, and is arranged between the adjacent fixed plates and is in contact with the outer circumference of the screw. a movable plate that moves along with the rotation of the screw; a filter groove formed between the adjacent fixed plates; A method of using a solid-liquid separation device for separating into solid components,
A position adjusting member is inserted to change the position of the screw in the direction of the axis of rotation of the screw with respect to the stacked filter bodies by a distance different from the distance between the adjacent fixed plates, thereby adjusting the position of the screw during operation. A method of using a solid-liquid separator that changes the contact position of a movable plate. a connecting portion between a supporting member that rotatably supports the rotating shaft and the stacked filter bodies, a connecting portion between the stacked filter bodies and a discharging portion of the material to be processed, and a speed reducer connected to the rotating shaft and the motor; and a connection portion between the motor-side portion and the screw-side portion of the rotating shaft, and the position adjusting member is inserted into at least one of the connecting portion of the rotary shaft in the direction of the rotation axis of the screw with respect to the stacked filter bodies. The method of using the solid-liquid separator according to claim 1, wherein the position is changed. 3. The contact position of the movable plate of the screw is changed by changing the position by a distance smaller than the distance between the adjacent fixed plates in the rotational axis direction of the screw with respect to the stacked filter bodies. A method of using the solid-liquid separation device according to . 4. The contact position of the screw with the movable plate is changed by changing the position of the screw in the rotation axis direction with respect to the stacked filter bodies every operation time within a predetermined range. A method of using the solid-liquid separation device according to . A solid-liquid separation device for separating an object to be processed into a liquid component and a solid component,
a screw that rotates with the rotation of the rotary shaft and feeds the workpiece;
a motor that rotationally drives the rotating shaft;
a plurality of fixed plates; and a movable plate disposed between the adjacent fixed plates and in contact with the outer periphery of the screw and moving with the rotation of the screw, wherein filtering grooves are formed between the adjacent fixed plates; a laminated filter body arranged to surround the screw;
a position adjusting member inserted to change the position of the screw relative to the stacked filter bodies in the rotation axis direction by a distance different from the distance between the adjacent fixed plates. 6. The solid-liquid separator according to claim 5 , wherein said position adjusting member is configured to be attachable to and detachable from a solid-liquid separator main body including said layered filter body and said screw.

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