JP7230714B2 - Multiple disc dehydrator and dehydration system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a multi-disc dehydrator and dehydration system, and more particularly to a multi-disc dehydrator and dehydration system having a plurality of laminated rotating filter bodies.

BACKGROUND ART Conventionally, a multi-disc dehydrator and a dehydration system provided with laminated rotary filter bodies are known (see Patent Document 1, for example).

In Patent Document 1, a plurality of rotating filter elements including a rotating shaft and stacked discs (laminated rotating filter bodies), and a pair of side plates provided so as to sandwich the rotating filter elements in the axial direction of the rotating shaft. Disclosed is a filter body rotary dehydrator comprising a treatment chamber containing a. The plurality of stacked discs are arranged side by side in each of upper and lower rows within the processing chamber. In this filter body rotary dehydrator, sludge (object to be treated) is conveyed and dewatered between the upper row of stacked discs and the lower row of stacked discs, and the discharge port It is configured to discharge dehydrated sludge (dehydrated cake) from which moisture has been removed from the

JP-A-10-137795

Here, in the conventional filter body rotary dehydrator (hereinafter referred to as "dehydrator") as described in Patent Document 1, it is desirable to discharge dehydrated sludge (dehydrated cake) having a lower water content. It is rare. However, in the dehydrator described in Patent Document 1, when treating dewatered sludge (object to be treated) having a relatively low water content, the object to be treated having a low water content separates the stacked discs in the upper row from the lower row. It is thought that the discs stacked in rows are pressed from the inside with a relatively large force. In this case, the axis of rotation of the stacked discs in the upper row and the axis of rotation of the stacked discs in the lower row are away from each other. It is conceivable that the rotating shaft of the circular plate and the rotating shaft may bend outward from the transport path of the sludge (object to be treated). For this reason, in the dehydrator described in Patent Document 1, in order to obtain an object having a relatively low moisture content, the object to be treated having a low moisture content is laminated with discs (laminated rotary filter bodies). It is thought that there is a problem that the rotating shaft may bend outward from the conveying path.

The present invention has been made to solve the above problems, and one object of the present invention is to obtain an object to be treated (dehydrated cake) with a relatively low moisture content and to To provide a multi-disc type dehydrator and a dehydration system capable of suppressing bending of the rotary shaft of a laminated rotary filter body toward the outside from a conveying path due to an object to be processed having a relatively low volatility.

In order to achieve the above object, the multi-disc dehydrator according to the first aspect of the present invention comprises a housing, a rotating shaft rotatably arranged in the housing, and along the axial direction of the rotating shaft A plurality of rotating bodies arranged side by side in an upper row and a lower row, including a laminated rotating filter body having a plurality of stacked filter pieces and having filter grooves formed between the plurality of filter pieces. and, formed separately from the housing, connecting at least one of the plurality of rotating bodies in the upper row and at least one of the plurality of rotating bodies in the lower row, and connecting the upper row of rotating bodies to the lower row of rotating bodies. a deflection regulating portion for regulating outward deflection of the rotating shaft from a conveying path formed between the row of rotating bodies and conveying the object to be processed; is provided to the inside of the housing, and a discharge port is provided for discharging the processed material to the outside of the housing. and a second rotating body arranged closer to the supply port side of the housing than the first rotating body. The rotating body and the lower row of rotating bodies face each other, and the most upstream rotating body of the second rotating bodies does not face the upper row of rotating bodies and the lower row of rotating bodies in the vertical direction. Each of the rotating bodies includes a plurality of laminated rotating filter bodies, and the second rotating body is provided with an intermediate plate member provided between the plurality of laminated rotating filter bodies, and a deflection regulation is arranged in place of the intermediate plate member at a position corresponding to the intermediate plate member of the first rotating body in a state of not being fixed to the housing, and rotates the upper row corresponding to the first rotating body; It is configured to connect the body with the lower row of rotors corresponding to the first rotor .

In the multiple disc dehydrator according to the first aspect of the present invention, as described above, at least one of the plurality of rotating bodies in the upper row and at least one of the plurality of rotating bodies in the lower row are connected. Provide a deflection restricting part that As a result, even if the moisture content is lowered and the object to be treated, which has a relatively low moisture content, presses against the rotating body, and the rotating shaft tends to deflect outward from the conveying path, the deflection is regulated. It is possible to restrict a change in relative position between the upper row of rotors and the lower row of rotors that are connected to each other by the portion. For this reason, it is possible to prevent the upper row of rotating bodies and the lower row of rotating bodies that are connected to each other from being deformed so as to move away from each other. As a result, an object to be treated (dehydrated cake) having a relatively low moisture content can be obtained, and the rotating shaft of the laminated rotary filter body is deflected outward from the conveying path by the object to be treated having a relatively low moisture content. can be suppressed. Here, it is conceivable that the upper row of rotors and the lower row of rotors tend to move downward together with respect to the housing due to the gravity of the object to be processed. In this case, when the deflection restricting portion and the housing are integrally formed, the stress for restricting the downward movement of the rotating body is applied to the deflection restricting portion integrally formed with the housing. is thought to occur. For this reason, it is considered that the deflection regulating portion needs mechanical strength to withstand this stress in addition to the mechanical strength to suppress the bending of the rotary shaft outward from the conveying path. As a result, it is considered that the deflection restricting portion is enlarged. In contrast, according to the present invention, the deflection restricting portion is formed separately from the housing, so that no stress for restricting the downward movement of the rotating body is generated in the deflection restricting portion. As a result, the deflection restricting portion does not require mechanical strength to withstand this stress, so that it is possible to suppress the enlargement of the deflection restricting portion. Here, since the water content of the object to be treated becomes lower as it is closer to the discharge port, the object to be treated closer to the discharge port side is relatively hard. As a result, the pressing force from the object to be processed against the first rotating body, which is generated against the force that squeezes the object to be processed, is greater than the pressing force from the object to be processed against the second rotating body. As a result, it is considered that the first rotating body is more likely to bend outward from the conveying path than the second rotating body. Focusing on this point, in the present invention, as described above, the deflection that connects the upper row of rotors and the lower row of rotors corresponding to the first rotor disposed on the discharge port side of the housing is provided. A regulating portion is provided in the multi-disk type dehydrator. Accordingly, the deflection restricting portion can effectively suppress the deflection of the rotating shaft of the first rotating body, which is arranged on the discharge port side of the housing and has a relatively high possibility of deflection. In addition, when replacing a portion of a plurality of laminated rotary filter bodies having a function of filtering the material to be treated as a deflection restricting section, it is considered that the filtering function may deteriorate in the region configured as the deflection restricting section. be done. On the other hand, in the present invention, instead of the intermediate plate member, the deflection restricting portion is arranged at a position corresponding to the intermediate plate member in the first rotating body. Thereby, unlike the case where a part of the plurality of laminated rotary filter bodies is replaced as the deflection restricting portion, it is possible to suppress deterioration of the filtering function of the plurality of laminated rotary filter bodies.

In the multi-disc dehydrator according to the first aspect, preferably, the deflection restricting portion is arranged so that the upper rotating shaft, which is the rotating shaft of at least one of the rotating bodies in the upper row, penetrates therethrough. It includes a single deflection restricting member provided with an upper hole and a lower hole through which a lower rotary shaft, which is the rotary shaft of at least one of the rotary bodies in the lower row, is arranged. With this configuration, the upper rotating shaft and the lower rotating shaft can be connected by a single deflection restricting member. It is possible to improve the strength of the restricting portion and improve the ease of assembly.

In this case, preferably, the deflection restricting portions are arranged in the first bearing member holding the upper rotating shaft arranged in the upper hole of the single deflection restricting member, and in the lower hole of the single deflection restricting member. and a second bearing member holding the lower rotating shaft. With this configuration, the upper rotating shaft can be easily rotatably held by the first bearing member, and the lower rotating shaft can be easily rotatably held by the second bearing member.

In the multi-disc dehydrator according to the first aspect, preferably, the deflection restricting part is formed separately from the first deflection restricting part and the first deflection restricting part, and the first deflection restricting part is and a second deflection restricting portion that connects a rotating body that is different from the rotating body to be connected. With this configuration, the force applied to each deflection restricting portion can be dispersed, so deformation of the deflection restricting portion can be suppressed. Here, when assembling the laminated rotary filter body, each filter piece is laminated on the rotary shaft in a cantilevered state in which only one side of the rotary shaft is held. In this case, since the other side of the rotating shaft is a free end, the other side of the rotating shaft will move in the radial direction unless fixed by a jig or the like. Since the amount of movement in the radial direction increases in proportion to the length of the rotating shaft, the amount of movement of the other side of the rotating shaft in the radial direction increases particularly in a large-sized multi-disk type dehydrator. When combining multiple rotating shafts and one deflection restricting portion, the other sides of the multiple rotating shafts move in the radial direction relative to each other. It won't be easy. On the other hand, in the present invention, the deflection restricting part is formed separately from the first deflection restricting part and the first deflection restricting part, and has a different rotational speed from the rotating body to which the first deflection restricting part is connected. By including the second deflection restricting portion that connects the body, the number of rotating shafts combined with one deflection restricting portion can be reduced. As a result, it is possible to improve the ease of assembly of the deflection restricting portion and the rotating shaft.

In the multi-disc dehydrator according to the first aspect, preferably, the deflection regulating part has one of the upper row of rotors and the lower row of rotors in a portion above the upper row of rotors. A holding member arranging portion is provided in which a holding member for hanging the deflection restricting portion from above when maintenance work is performed on at least one of them is arranged. According to this configuration, the deflection restricting portion and the rotating body can be suspended by arranging the holding member in the holding member arranging portion during maintenance work. As a result, even if a part of the housing that holds the rotating body is removed during maintenance work, the rotating body can be suspended via the deflection restricting portion, so maintenance work can be performed while maintaining the position of the rotating body. It can be carried out. That is, the member that functions as the deflection restricting portion during operation of the multi-disc dehydrator can be used as a jig for suspending the rotating body during maintenance work of the multi-disc dehydrator.

In the multi-disk dehydrator according to the first aspect, preferably, the laminated rotary filter body includes a plurality of small-diameter disk filter pieces and a plurality of medium-diameter disk pieces having a larger diameter than the small-diameter disk filter pieces. It has a filter piece and a plurality of large-diameter disk pieces having a diameter larger than that of the medium-diameter disk piece, and the medium-diameter disk piece is composed of a small-diameter disk piece and a large-diameter disk piece. The laminated rotary filter body has a convex portion that fits in and abuts on the adjacent medium-diameter disc filter pieces, and the laminated rotary filter body has a small-diameter disc filter piece and a large-diameter disc filter piece between the adjacent medium-diameter disc filter pieces. The disk filter pieces are alternately laminated so as to be swingable, and the deflection restricting portion is arranged so as to be laminated on the rotating shaft together with the laminated rotary filter body. According to this configuration, while maintaining the interval between the medium-diameter disc filter pieces adjacent to each other by the projections, the large-diameter disc filter pieces and the small-diameter disc filter pieces oscillate, clogging the filtration grooves. can be suppressed. As a result, the deflection of the rotating shaft can be restricted by the deflection restricting portion laminated on the rotating shaft together with the layered rotary filter body, while suppressing clogging of the filter grooves.

A dehydration system according to a second aspect of the present invention includes a concentrator for concentrating a material to be processed, and a dehydrator including a housing having a supply port to which the concentrated material to be processed is supplied from the concentrator, The dehydrator has a rotating shaft rotatably arranged in a housing, and a plurality of filter pieces stacked along the axial direction of the rotating shaft, and a layered structure in which filter grooves are formed between the plurality of filter pieces. a plurality of rotating bodies including rotating filter bodies arranged side by side in an upper row and a lower row; and at least one of the plurality of rotating bodies in the upper row formed separately from the housing , at least one of the plurality of rotating bodies in the lower row, and the rotating shaft is outside from a conveying path for conveying the workpiece formed between the rotating bodies in the upper row and the rotating bodies in the lower row. and a deflection restricting portion that restricts bending toward the housing, the housing is provided with a discharge port for discharging the object to be processed to the outside of the housing, and the plurality of rotating bodies are , a first rotating body disposed on the discharge port side, and a second rotating body disposed on the supply port side of the housing rather than the first rotating body, and the first rotating body is , the upper row of rotors and the lower row of rotors face each other in the vertical direction, and the most upstream rotor of the second rotors is vertically vertically aligned with the upper row of rotors and the lower row of rotors. The plurality of rotating bodies do not face each other and each includes a plurality of laminated rotating filter bodies, and the second rotating body includes an intermediate plate member provided between the plurality of laminated rotating filter bodies. The deflection restricting portion is arranged in place of the intermediate plate member at a position of the first rotating body corresponding to the intermediate plate member in a state in which it is not fixed to the housing. and the lower row of rotors corresponding to the first rotor are connected to each other.

In the dehydration system according to the second aspect of the present invention, as described above, by providing the deflection regulating portion, it is possible to obtain an object to be treated (dehydrated cake) having a relatively low moisture content, and the moisture content is lowered. It is possible to provide a dehydration system capable of suppressing bending of the rotating shaft of the laminated rotary filter body toward the outside from the conveying path due to the object to be processed (dehydrated cake).

According to the present invention, as described above, it is possible to obtain an object to be treated (dehydrated cake) having a relatively low moisture content, and the rotating shaft of the layered rotary filter is rotated by the object to be treated having a relatively low moisture content. It is possible to suppress bending outward from the conveying path.

1 is a diagram schematically showing a dehydration system according to a first embodiment of the present invention; FIG. 1 is a cross-sectional view along the front-rear direction of a multi-disc dehydrator according to a first embodiment of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the configuration of a multi-disc dehydrator according to a first embodiment of the present invention; 1 is a lateral cross-sectional view of a multi-disc dehydrator according to a first embodiment of the present invention; FIG. 1 is a side view of a multiple disc dehydrator according to a first embodiment of the present invention; FIG. FIG. 4 is a diagram schematically showing regulation of bending deformation of the rotating shaft of the upper row rotating body and the rotating shaft of the lower row rotating body according to the first embodiment of the present invention; FIG. 4 is a diagram for explaining the positional relationship between the deflection restricting portion and the intermediate plate member according to the first embodiment of the present invention; It is a figure which shows the structure of the bending control part by 1st Embodiment of this invention. FIG. 4 is a diagram for explaining a state during maintenance work of the multi-disc dehydrator according to the first embodiment of the present invention; 1 is a perspective view showing the configuration of a laminated rotary filter body according to a first embodiment of the present invention; FIG. It is a figure for demonstrating the structure of the convex part by 1st Embodiment of this invention. It is a figure for demonstrating the structure of the filtration groove by 1st Embodiment of this invention. FIG. 5 is a longitudinal cross-sectional view of a multi-disc dehydrator according to a second embodiment of the present invention; FIG. 10 is a longitudinal cross-sectional view of a multi-disc dehydrator according to a third embodiment of the present invention; FIG. 5 is a cross-sectional view along the left-right direction of a multi-disc dehydrator according to a first modification of the first to third embodiments of the present invention; FIG. 5 is a diagram for explaining the configuration of a dehydration system according to a second modification of the first to third embodiments of the present invention; FIG. 11 is a diagram for explaining the configuration of a deflection restricting portion according to a third modified example of the first to third embodiments of the present invention; FIG. 10 is a diagram for explaining the configuration of a multi-disc dehydrator according to a fourth modification of the first to third embodiments of the present invention; FIG. 11 is a cross-sectional view along the left-right direction of a multi-disc dehydrator according to a fourth modification of the first to third embodiments 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.

[First embodiment]
(Configuration of dehydration system)
The configuration of a dehydration system 100 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 12. FIG.

As shown in FIG. 1, the dehydration system 100 is configured as a system (apparatus) that reduces the moisture content of the material P to be processed (for example, sludge) by concentrating and dehydrating the material P to be processed. The dehydration system 100 includes a multi-disc dehydrator 101 (hereinafter referred to as “dehydrator 101 ”), a screw thickener 102 , a tank 103 , and an agglomeration mixing tank 104 . The screw type concentrator 102 (hereinafter referred to as "concentrator 102") is an example of the "concentrator" in the claims.

The concentrator 102 is provided integrally with the dehydrator 101 . A dehydrator 101 provided with a concentrator 102 is installed on the upper side of a tank 103 . That is, the tank 103 is configured as a separate body from the dehydrator 101 (casing part 1). The tank 103 is provided with a filtrate receiving portion 103a for receiving the filtrate PL discharged from the concentrator 102 and a storage portion 103b for storing the filtrate PL discharged from the dehydrator 101 .

The tank 103 is configured so that the filtrate PL discharged from the concentrator 102 and the filtrate PL discharged from the dehydrator 101 can be discharged separately by the filtrate receiver 103a. In addition, the filtrate receiving part 103 a is configured to be movable from below the concentrator 102 to below the dehydrator 101 . Filtrate receiving part 103a moves to the lower side of lower row rotating body 4 of dehydrator 101, whereby the filtrate discharged from filtration groove S of upper row rotating body 3 and lower row rotating body 4 of dehydrator 101 is removed. It is configured to be able to receive the liquid PL as well.

That is, the filtrate receiving part 103a is moved to the lower side of the upper row rotating body 3 and the lower row rotating body 4 of the dehydrator 101, thereby filtering the upper row rotating body 3 and the lower row rotating body 4 of the dehydrating machine 101. It is configured to receive part of the filtrate PL discharged from the groove S so as not to be discharged to the reservoir 103b.

In addition, the filtrate receiving part 103a moves directly below all the upper row rotating bodies 3 and the lower row rotating bodies 4 of the dehydrator 101 so that the upper row rotating bodies 3 and the lower row rotating bodies 4 of the dehydrating machine 101 It is also configured to be able to receive all of the filtrate PL discharged from the filtration groove S. At this time, almost no filtrate PL is discharged into the reservoir 103b.

In the storage part 103b of the tank 103, the undiluted solution of the material to be processed P is supplied from the material to be processed storage tank T1, and the inorganic coagulant is supplied from the inorganic coagulant supply part T2. Aggregation processing of the to-be-processed object P is performed by aggregating with a flocculant.

The material to be processed P in the storage section 103b is supplied to the aggregation and mixing tank 104 by the supply pump T4.

The aggregation and mixing tank 104 is provided with a polymer flocculant supply unit 104a that supplies the polymer flocculant to the object P to be processed, and a stirring unit 104b that agitates the object P to be processed and the polymer flocculant. . In the aggregation and mixing tank 104, the material to be processed P is further aggregated. The stirring section 104b is composed of a motor and a stirring blade driven by the motor. The aggregation and mixing tank 104 is configured to discharge the material to be processed P by overflow and supply it to the concentrator 102 .

The concentrator 102 is arranged upstream of the dehydrator 101 . The concentrator 102 is configured to concentrate (concentrate) the material P to be processed. The concentrator 102 is configured to supply the concentrated material P to the stock solution supply port 11 of the casing 1 of the dehydrator 101 . In addition, the "concentration treatment" means that the moisture content of the aggregated material P is adjusted to a predetermined moisture content (for example, about 94 to about 98%, more preferably, while maintaining the fluidity of the material P). 96%).

Specifically, the concentrator 102 includes a screw 120 , a layered filter body 121 and a motor 122 . The concentrator 102 is arranged with an oblique upward slant toward the downstream side (X2 direction side). In other words, the concentrator 102 is configured to be positioned higher in the X2 direction.

The screw 120 includes a rod-shaped rotary shaft 120a extending linearly and blades 120b provided on the rotary shaft 120a. The rotating shaft 120 a is connected to a motor 122 at one end and is configured to be driven by the motor 122 . The screw 120 is configured to feed the workpiece P in the axial direction of the rotating shaft 120a as the rotating shaft 120a rotates. Thereby, the screw 120 is configured to feed the supplied workpiece P in the X2 direction.

The blade portion 120b is provided on the outer peripheral surface of the rotating shaft 120a. Further, the blade portion 120b spirally extends in the axial direction of the rotating shaft 120a. Further, the blade portion 120b is formed by one continuous blade, and is formed so that the pitch in the axial direction of the rotating shaft 120a is substantially equal.

As shown in FIG. 1, the laminated filter body 121 has a cylindrical shape as a whole. The laminated filter body 121 has the screw 120 arranged inside so as to surround the screw 120 . Moreover, the laminated filter body 121 has a laminated structure in which fixed plates and movable plates are alternately laminated. In the layered filter body 121, a plurality of filtering grooves are formed at regular intervals along the axial direction of the rotating shaft 120a. The concentrator 102 is configured such that the filtrate PL drops downward from the filtration groove when the material to be processed P is conveyed. The concentrator 102 rotates the screw 120 to rotate the vane portion 120b, thereby conveying the material P to the dehydrator 101 side while concentrating the material P to be processed.

(Configuration of dehydrator)
As shown in FIG. 2, the dehydrator 101 is configured as a device that reduces the moisture content of the material to be processed P by dehydrating the material to be processed P (for example, sludge). Specifically, the dehydrator 101 according to the first embodiment is configured to dehydrate the material P so that the water content of the material P is 80% or less. For example, the dehydrator 101 dehydrates the material to be processed P that has been concentrated in advance by the concentrator 102, thereby forming a solid component (dehydrated cake PC) having a low water content (for example, 80% or less) and a liquid It is configured as a solid-liquid separation device for separating a component (filtrate PL).

As shown in FIGS. 2 and 3, the dehydrator 101 includes a housing 1, a plurality of motors 2, an upper row rotating body 3, a lower row rotating body 4, a deflection restricting section 5, and a control section 6. and

<Configuration of housing>
As shown in FIG. 2 , the casing 1 is provided with an undiluted solution supply port 11 , a solid discharge port 12 and a liquid discharge port 13 . Further, the housing portion 1 includes a front side plate portion 14, a rear side plate portion 15, a top plate portion 16, a left side plate portion 17 (see FIG. 4), and a right side plate portion 18 (see FIG. 4). The front side plate portion 14 is arranged on the front side (X2 direction side, discharge port side) of the upper row rotating body 3 and the lower row rotating body 4 . Further, the rear side plate portion 15 is arranged on the rear side (X1 direction side, supply port side) of the upper row rotating body 3 and the lower row rotating body 4 . In addition, the top plate portion 16 is arranged on the upper side (Z1 direction side) of the upper row rotating body 3 . The undiluted solution supply port 11 is an example of the "supply port" in the scope of claims. Also, the solid discharge port 12 is an example of the "discharge port" in the claims. Further, in the following description, the "supply port side" means the X1 direction side in FIG. 1, and the "discharge port side" means the X2 direction side in FIG.

As shown in FIG. 4 , the left side plate portion 17 and the right side plate portion 18 sandwich the upper row rotor 3 and the lower row rotor 4 in the left-right direction (Y-direction). It supports the rotating body 4 .

As shown in FIG. 2 , the undiluted solution supply port 11 is provided in the upper portion of the rear side plate portion 15 and configured so that the material to be processed P is supplied from the concentrator 102 . The solid discharge port 12 is provided in the upper portion of the front side plate portion 14 and is configured to discharge the dehydrated cake PC separated from the object P to the outside of the dehydrator 101 . Further, the liquid discharge port 13 is provided in the lower part of the housing part 1 and is configured to discharge the filtrate PL separated from the object to be processed P from the dehydrator 101 to the outside.

<Motor configuration>
As shown in FIGS. 4 and 5, the motor 2 is arranged outside the housing 1 . For example, the motor 2 is provided at one end (Y1 direction side end) in the axial direction (Y direction) of each of the rotation shafts 30 of the upper row rotor 3 and the lower row rotor 4 . Specifically, the motor 2 is arranged outside the right side plate portion 18 (Y1 direction side). Further, the rotating shaft 30 is rotatably supported by bearings 30 a provided on each of the left side plate portion 17 and the right side plate portion 18 .

The motor 2 is configured to rotationally drive the rotating shaft 30 . Specifically, the motor 2 is configured to rotate the rotating shafts 30 of the upper row rotating body 3 and the lower row rotating body 4 via the speed reducer 21 . The speed reducer 21 reduces the output of the motor 2 at a speed reduction ratio of about 1/1200, for example, and transmits the reduced output to each rotating shaft 30 .

As shown in FIG. 3, motor 2 is connected to inverter 22 . Also, the motor 2 is configured to be rotationally driven by electric power supplied via the inverter 22 . The inverter 22 is configured to convert the frequency, current value, and voltage value of power supplied from the power supply section 24 . Further, the control unit 6 is configured to control the frequency of the AC power supplied to the motor 2 by the inverter 22 .

For example, as shown in FIG. 4, one motor 2 is provided for each of first rotating bodies 31, 32, 33, 34, 41 and 42, which are arranged on the side of the solid discharge port 12 and are described later. there is In addition, one motor 2 is provided for each of the first rotating body 43 and the second rotating bodies 35, 36 and 44 to 48, which are arranged on the side of the undiluted solution supply port 11 and will be described later. there is Specifically, two upper row rotors 3 and lower row rotors 4 adjacent in the X direction are interlocked and rotationally driven by the chain 23 .

In addition, one inverter 22 is provided for each motor 2 that rotates the first rotors 31 to 34, 41 and 42 arranged on the solid discharge port 12 side. In addition, a common inverter 22 is provided for each motor 2 that rotates the first rotating body 43 and the second rotating bodies 35, 36, and 44 to 48 arranged on the side of the undiluted solution supply port 11. It is

<Structure of Upper Row Rotating Body and Lower Row Rotating Body>
As shown in FIG. 2, a transport path R for transporting the workpiece P is formed between the upper row rotating body 3 and the lower row rotating body 4 in the housing portion 1 . Specifically, the upper row of rotors 3 includes first rotors 31, 32, 33, and 34 and a second rotor, which are arranged in order from the solid discharge port 12 side toward the undiluted solution supply port 11 side. rotators 35 and 36 are included. The lower row of rotors 4 includes first rotors 41, 42 and 43 and second rotors 44 and 45 which are arranged in order from the solid discharge port 12 side toward the concentrate supply port 11 side. , 46, 47 and 48. That is, the first rotors 31 to 34 are arranged closer to the solid discharge port 12 than the second rotors 35 and 36 are. The first rotating bodies 41-43 are arranged closer to the solid discharge port 12 than the second rotating bodies 44-48.

Also, during operation of the dehydrator 101, the first rotating bodies 31, 32, 41, and 42 are rotated at a low speed by the motor 2. As shown in FIG. For example, the first rotors 31, 32, 41, and 42 are rotated at a rotational speed of approximately 0.25 rpm to 1 rpm. During operation of the dehydrator 101, the first rotating bodies 33, 34 and 43 and the second rotating bodies 35, 36 and 44-48 are rotated at high speed. For example, the first rotating bodies 33, 34 and 43 and the second rotating bodies 35, 36 and 44-48 are rotated at a rotational speed of approximately 0.75 rpm to 1.5 rpm. As a result, the compressive force applied to the material to be processed P gradually increases from the upstream side to the downstream side.

In addition, the vertical (Z-direction) interval between the upper row rotor 3 and the lower row rotor 4 (vertical width of the transport path R) is from the raw liquid supply port 11 side to the solid discharge port 12 side. It is configured to be narrower according to In the conveying route R, the volume of the object P to be dehydrated is gradually decreased from the raw liquid supply port 11 side toward the solid discharge port 12 side. With this configuration as well, the compressing force applied to the material to be processed P gradually increases from the upstream side to the downstream side of the transport path R.

As shown in FIG. 6, when the object to be processed P resists the pressing force applied to the object to be processed P, a pressing force F1 is generated from the object to be processed P to the upper row rotating body 3 and the lower row rotating body 4. . When this pressing force F1 is large, the rotating shafts 30 of the upper row rotating bodies 3 and the lower row rotating bodies 4 each try to deform outward from the transport path R, but the deflection regulation described later is applied. This bending deformation is restricted by the portion 5 .

As shown in FIG. 2, by pressing the solid component (dehydrated cake PC) of the material to be processed P toward the solid discharge port 12 by means of a flapper 12a and a pressure control unit 12b provided at the solid discharge port 12, It is configured to be able to discharge the solid component (dehydrated cake PC) of the material to be processed P having a low moisture content.

In addition, the first rotating bodies 41 to 43 and the second rotating bodies 44 to 48 of the lower row rotating bodies 4 are arranged at predetermined intervals from each other in at least one of the longitudinal direction and the vertical direction, By rotating in the same direction of rotation (clockwise in FIG. 2), the object to be processed P is conveyed. In addition, the first rotating bodies 31 to 34 and the second rotating bodies 35 and 36 of the upper row rotating body 3 are arranged at predetermined intervals from each other in at least one of the longitudinal direction and the vertical direction, By rotating in the same direction of rotation (counterclockwise in FIG. 2), the object to be processed P is conveyed.

In addition, the upper row rotating body 3 and the lower row rotating body 4 filter the liquid component (filtrate PL) of the object P to be processed. Specifically, the filtrate PL is filtered by gravity from the filtration grooves S (see FIG. 12) of the lower row rotor 4 . As a result, the water content of the material to be processed P is reduced. In addition, the first rotating bodies 31, 32, 41 and 42 arranged on the side of the solid discharge port 12 press (squeeze) the material to be treated P from above and below to dewater it. As a result, the water content of the material to be processed P is further reduced, for example, the water content of the material to be processed P is less than 80%. In addition, in the present embodiment, by providing the deflection regulating portion 5, even if the processing is performed so that the water content of the material to be processed P becomes less than 80%, the rotating shaft 30 of the laminated rotary filter body 300 does not move along the conveying path. It is possible to suppress outward bending from R.

<Structure of Deflection Regulating Part>
As shown in FIG. 2, the deflection regulating part 5 connects at least one of the upper row rotating bodies 3 and at least one of the lower row rotating bodies 4, and the rotating shaft 30 is positioned outside the transport path R. It is configured to restrict bending toward. In the first embodiment, the deflection restricting portion 5 connects the first rotating bodies 31 to 34 and 41 to 43, and the rotating shafts 30 of the first rotating bodies 31 to 34 and 41 to 43 are deflected. is configured to regulate the

Specifically, the deflection restricting portion 5 is formed separately from the housing portion 1 . Further, the deflection restricting portion 5 is arranged away from the housing portion 1 . That is, as shown in FIG. 4 , the deflection restricting portion 5 is arranged apart from the front side plate portion 14 , the rear side plate portion 15 , the top plate portion 16 , the left side plate portion 17 and the right side plate portion 18 .

In addition, the deflection restricting portion 5 separates the first rotating bodies 31 to 34 of the upper row rotating bodies 3 and the first rotating bodies 41 to 43 of the lower row rotating bodies 4 from the housing part 1. configured to connect in a state. In other words, the deflection restricting portion 5 is arranged so as to vertically connect the first rotors 31 to 34 and the first rotors 41 to 43 in a state separated from the housing portion 1 .

As shown in FIG. 7, the deflection regulating portion 5 is arranged to be stacked on the first rotating bodies 31 to 34 and 41 to 43 together with a plurality of (for example, two) stacked rotating filter bodies 300. there is Further, the second rotating bodies 35, 36 and 44 to 48 are provided with a plurality (for example, two) of laminated rotating filter bodies 300 and an intermediate plate member 300a. The intermediate plate member 300a is arranged between the plurality of laminated rotary filter bodies 300 . Here, in the first embodiment, in each of the first rotating bodies 31 to 34 and 41 to 43, the deflection restricting portion 5 is arranged at a position corresponding to the intermediate plate member 300a instead of the intermediate plate member 300a. there is For example, when the intermediate plate member 300a is arranged at the center in the left-right direction, the deflection restricting portion 5 is arranged at the center in the left-right direction.

As shown in FIG. 8 , the deflection restricting portion 5 includes a single plate member 51 . The plate member 51 is formed in a flat plate shape having a thickness t1 (see FIG. 7). The plate member 51 is made of, for example, a metal member. In the first embodiment, the plate member 51 includes an upper hole portion 52a through which the rotating shafts 30 of the first rotating bodies 31 to 34 of the upper row rotating bodies 3 pass, and a lower row rotating body. 4 are provided with lower holes 52b through which the rotating shafts 30 of the first rotating bodies 41 to 43 of 4 are respectively passed. That is, the deflection restricting portion 5 is provided with four upper hole portions 52a and three lower hole portions 52b. The plate member 51 is an example of a "single deflection regulating member" in the scope of claims. Further, the rotating shaft 30 of the first rotating bodies 31 to 34 is an example of the "upper rotating shaft" in the scope of claims. Further, the rotating shaft 30 of the first rotating bodies 41 to 43 is an example of the "lower rotating shaft" in the scope of claims.

The deflection restricting portion 5 includes a plurality of bearing members 53 . The bearing member 53 is arranged in each of an upper hole portion 52 a and a lower hole portion 52 b provided in the plate-like member 51 . And the bearing member 53 is configured as, for example, a slide bearing. Thus, the bearing member 53 arranged in the upper hole portion 52a is configured to rotatably hold the rotating shaft 30 arranged in the upper hole portion 52a. The bearing member 53 arranged in the lower hole portion 52b is configured to rotatably hold the rotating shaft 30 arranged in the lower hole portion 52b. The bearing member 53 arranged in the upper hole portion 52a is an example of the "first bearing member" in the claims. Moreover, the bearing member 53 arranged in the lower hole portion 52b is an example of the "second bearing member" in the claims.

Further, the deflection restricting portion 5 is provided with a holding member placement hole portion 54 (hereinafter referred to as “hole portion 54”). The hole portion 54 is provided in a portion of the deflection restricting portion 5 above the upper row rotating body 3 . As shown in FIG. 9, the hole 54 is configured so that a holding member 55 for suspending the deflection restricting portion 5 from above when maintenance work is performed on the upper row rotating body 3 and the lower row rotating body 4 is arranged. It is For example, a plurality of holes 54 are provided at approximately equal intervals in the front-rear direction. In addition, the hole 54 is an example of the "holding member placement portion" in the scope of claims.

The holding member 55 is arranged so as to pass through the hole portion 54 during maintenance work (during maintenance), and is configured to be attached to the top plate portion 16 of the housing portion 1, for example. That is, the holding member 55 is removed from the deflection restricting portion 5 while the dehydration system 100 (dehydrator 101) is in operation. When one of the left side plate portion 17 and the right side plate portion 18 is removed from the housing portion 1 during maintenance work, the upper row rotator 3 and the lower row rotator 4 are connected to the left side plate portion 17 and the right side plate portion. 18 and the holding member 55 .

Here, as shown in FIG. 6, when the object P resists the pressing force applied to the object P, the pressing force from the object P to the upper row rotating member 3 and the lower row rotating member 4 F1 occurs. When the pressing force F1 is large, the rotating shafts 30 of the upper row rotating bodies 3 and the lower row rotating bodies 4 each try to deform outward from the transport path R, but the deflection restricting portion 5 is configured to restrict this bending deformation.

Specifically, the distance between the upper row rotating bodies 3 and the lower row rotating bodies 4, which are connected to each other by the deflection restricting portion 5, does not substantially change. is regulated. That is, the upper row rotating body 3 and the lower row rotating body 4, which are connected to each other, pull each other through the deflection restricting portion 5, thereby bending deformation of the upper row rotating body 3 and bending of the lower row rotating body 4. deformation is regulated. Specifically, the deflection restricting portion 5 applies a pressing force F2 to the upper row rotating body 3 via the upper hole portion 52a and the bearing member 53 so as to cancel the pressing force F1 to the upper row rotating body 3 . In addition, the deflection restricting portion 5 causes the lower row rotating body 4 to generate a pressing force F2 through the lower hole portion 52b and the bearing member 53 so as to cancel the pressing force F1 to the lower row rotating body 4 .

<Structure of layered rotary filter body>
Also, as shown in FIG. 10, the laminated rotary filter body 300 includes three discs, a plurality of medium-diameter disc filter pieces 301 , a plurality of small-diameter disc filter pieces 302 , and a plurality of large-diameter disc filter pieces 303 . Contains seed filter pieces. The intermediate plate member 300a has a function of absorbing slight differences in thickness due to manufacturing errors among the medium-diameter disc filter pieces 301, the small-diameter disc filter pieces 302, and the large-diameter disc filter pieces 303, and the like.

Specifically, the medium-diameter disc filter piece 301 is made of, for example, a resin material. The small-diameter disc filter piece 302 and the large-diameter disc filter piece 303 are made of, for example, a metal material.

The medium-diameter disc filter piece 301, the small-diameter disc filter piece 302, and the large-diameter disc filter piece 303 all have an annular shape. That is, each of the medium-diameter disk filter piece 301, the small-diameter disk filter piece 302, and the large-diameter disk filter piece 303 has a through hole 304 through which the rotating shaft 30 is inserted. The medium-diameter disc filter piece 301 , the small-diameter disc filter piece 302 , and the large-diameter disc filter piece 303 are all fitted to the rotating shaft 30 via a through hole 304 . For this reason, the medium-diameter disc filter piece 301, the small-diameter disc filter piece 302, and the large-diameter disc filter piece 303 are prevented from substantially moving in a direction intersecting the axial direction (Y direction) of the rotating shaft 30. It is configured.

The upper row rotating body 3 and the lower row rotating body 4 have a middle diameter disk filter piece 301, a small diameter disk filter piece 302 and a large diameter disk filter piece 301 in a state in which the rotating shaft 30 is inserted through the through hole 304 so as to surround the rotating shaft 30. It has a multi-plate structure in which radial disc filter pieces 303 are alternately stacked in the Y direction.

A plurality of medium-diameter disc filter pieces 301 are provided so as to line up at predetermined intervals in the Y direction. In the upper row rotating body 3 and the lower row rotating body 4, large-diameter disk filter pieces 303 and small-diameter disk filter pieces 302 are alternately arranged (stacked) between a plurality of medium-diameter disk filter pieces 301 arranged in the Y direction. It is configured by In short, the upper row rotating body 3 and the lower row rotating body 4 are arranged in the Y direction with medium-diameter disk filter pieces 301, large-diameter disk filter pieces 303, medium-diameter disk filter pieces 301, and small-diameter disk filter pieces 302. It is constructed by repeatedly arranging (laminating) each filter piece in order. Alternatively, the medium-diameter disc filter piece 301, the small-diameter disc filter piece 302, the medium-diameter disc filter piece 301, and the large-diameter disc filter piece 303 may be repeatedly arranged (stacked) in this order.

The medium-diameter disc filter piece 301 includes a disc-shaped plate-like portion 301a, a plurality of (four) convex portions 301b provided on one surface of the plate-like portion 301a, and the other surface of the plate-like portion 301a. It has a plurality (four) of convex portions 301c.

The plurality of convex portions 301b are arranged at positions spaced apart from the center of the medium-diameter disc filter piece 301 by a predetermined distance, and are arranged at regular intervals in the circumferential direction of the medium-diameter disc filter piece 301 . The plurality of protrusions 301c are provided at positions overlapping the protrusions 301b when viewed in the Y direction. A projection amount d1 from one surface of the convex portion 301b is larger than the thickness d3 of the small-diameter disc filter piece 302 and the thickness d4 of the large-diameter disc filter piece 303 (d1>d3, d1>d4).

As shown in FIG. 11, the convex portion 301c only slightly protrudes from the other surface of the plate-like portion 301a, and is actually positioned substantially on the same plane as the other surface of the plate-like portion 301a. (It is almost flush). Also, the amount d2 of projection from the other surface of the projection 301c is much smaller than the amount d1 of projection from the one surface of the projection 301b (d1>>d2). In addition, in each figure, for convenience of explanation, the projection amount d2 of the convex portion 301c is illustrated larger than the actual projection amount.

The medium-diameter disc filter piece 301 has the convex portion 301b brought into contact with the convex portion 301c of the other medium-diameter disc filter piece 301 adjacent to one side in the Y direction, and the convex portion 301c is brought into contact with the other side in the Y direction. It is stacked in contact with the convex portion 301b of another medium-diameter disk filter piece 301 adjacent to the side. Therefore, the plate-like portion 301a of the medium-diameter disc filter piece 301 is separated from the plate-like portion 301a of the other adjacent medium-diameter disc filter piece 301 by a gap (d1+d2). That is, the plate-like portion 301a of the medium-diameter disc filter piece 301 is separated from the plate-like portion 301a of the other adjacent medium-diameter disc filter piece 301 by the total amount of projection of the protrusions 301b and 301c. ing.

In addition, as shown in FIG. 12, between two adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a), a filtration groove S with a gap (d1+d2) is formed by convex portions 301b and 301c. ing.

The small-diameter disc filter piece 302 generally has a disc shape, as shown in FIG. In addition, the small-diameter disc filter piece 302 has a plurality of (four) notch portions 302a that are arranged at equal pitch intervals in the circumferential direction and are notched from the outer edge toward the center of the small-diameter disc filter piece 302. ing. The plurality of cutouts 302a are provided at positions overlapping the projections 301b and 301c of the medium-diameter disc filter piece 301 when viewed in the Y direction. In addition, the notch portion 302a is configured to engage with the convex portion 301b. The small-diameter disc filter piece 302 has a notch portion 302a engaged with the convex portion 301b of the medium-diameter disc filter piece 301, and the two adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a) are placed in

As shown in FIG. 8, the thickness d3 of the small-diameter disc filter piece 302 is smaller than the gap (d1+d2) between two adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a). Therefore, between two adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a) and small-diameter disc filter pieces 302, a filtered water outflow groove G1 with a gap (d1+d2-d3) is formed. .

That is, a filtered water outflow groove G1 with a gap (d1+d2-d3) is formed in a portion of the filter groove S between two adjacent medium-diameter disc filter pieces 301 excluding the small-diameter disc filter piece 302. FIG. Therefore, the small-diameter disc filter piece 302 is configured to be able to swing within a swinging range α in the Y direction where the filtering groove S is formed. The dehydrator 101 rotates while the small-diameter disk filter pieces 302 swing along with the rotation of the rotating shaft 30, and rubs the side surfaces of the medium-diameter disk filter pieces 301, so that the filtered water outflow groove G1 (filtration groove S) is Clogging can be suppressed. That is, the dehydrator 101 can self-clean the filtered water outflow groove G1 (filtration groove S). Further, the filtered water outflow groove G1 is configured to filter the material P to be processed by passing the liquid component contained in the material P to be processed.

As shown in FIG. 10, the large-diameter disc filter piece 303 has a disc shape. In addition, the large-diameter disc filter piece 303 is arranged at a position separated by a predetermined distance from the center of the large-diameter disc filter piece 303, and has a plurality of (four) through-holes arranged at equal pitch intervals in the circumferential direction. It has a hole 303a. The plurality of through-holes 303a are provided at positions overlapping the projections 301b and 301c of the medium-diameter disc filter piece 301 when viewed in the Y direction. The through hole 303 a is configured to fit the protrusions 301 b and 301 c of the medium-diameter disc filter piece 301 . In addition, the large-diameter disk filter piece 303 is formed by two adjacent medium-diameter disk filter pieces 301 (plate-like portions 301a).

As shown in FIG. 12, the thickness d4 of the large-diameter disc filter piece 303 is smaller than the gap (d1+d2) between the adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a). Therefore, between two adjacent medium-diameter disc filter pieces 301 (plate-like portions 301a) and the large-diameter disc filter piece 303, a filtered water outflow groove G2 with a gap (d1+d2-d4) is formed. there is

Therefore, the large-diameter disc filter piece 303 is configured to be able to swing within a swing range β in the Y direction where the filter groove S is formed. In the dehydrator 101, the large-diameter disc filter piece 303 swings as the rotating shaft 30 rotates, and the medium-diameter disc filter piece 301 is rotated while rubbing the side surface thereof. clogging can be suppressed. That is, the dehydrator 101 can self-clean the filtered water outflow groove G2 (filtration groove S). The filtered water outflow groove G2 is configured to filter the material P to be processed by allowing liquid components contained in the material P to pass through.

Moreover, the large-diameter disc filter piece 303 of the upper row rotor 3 (lower row rotor 4) and the large-diameter disc filter piece 303 of the other adjacent upper row rotor 3 (lower row rotor 4) are , are alternately arranged so as to overlap each other in the Y direction. That is, the large-diameter disc filter piece 303 of the upper row rotor 3 (lower row rotor 4) sandwiches the small-diameter disc filter piece 302 of the other adjacent upper row rotor 3 (lower row rotor 4). It is arranged so as to bite between the two medium-diameter disc filter pieces 301 . In addition, the medium-diameter disc filter piece 301 of the upper row rotor 3 (lower row rotor 4) and the medium-diameter disc filter piece 301 of the other adjacent upper row rotor 3 (lower row rotor 4) , are provided in substantially the same range (position) in the Y direction.

As shown in FIG. 10 , the thickness d5 of the medium-diameter disc filter piece 301 is greater than the thickness d3 of the small-diameter disc filter piece 302 and greater than the thickness d4 of the large-diameter disc filter piece 303 . Also, the diameter d6 of the medium-diameter disc filter piece 301 is larger than the diameter of the small-diameter disc filter piece 302 and smaller than the diameter of the large-diameter disc filter piece 303 .

The intermediate plate member 300a has an annular shape. That is, the intermediate plate member 300a is formed in a disc shape with a through hole 304 through which the rotating shaft 30 is inserted. Also, the intermediate plate member 300 a is fitted to the rotary shaft 30 via a through hole 304 . Further, the thickness d7 of the intermediate plate member 300a is larger than the thickness d3 of the small-diameter disc filter piece 302 and larger than the thickness d4 of the large-diameter disc filter piece 303. As shown in FIG. The diameter of the intermediate plate member 300a is substantially the same as the diameter d6 of the medium-diameter disc filter piece 301. As shown in FIG. Further, the intermediate plate member 300a is made of a metal material. Here, the thickness t1 of the plate member 51 of the deflection restricting portion 5 is equal to or less than the thickness d7.

[Effect of the first embodiment]
The following effects can be obtained in the first embodiment.

In the first embodiment, as described above, the deflection restricting portion 5 that connects at least one of the upper row rotating bodies 3 and at least one of the lower row rotating bodies 4 is provided. As a result, the water content is lowered, and a pressing force F1 is applied from the workpiece P, which has a relatively low water content, to the upper row rotating bodies 3 and the lower row rotating bodies 4. Even in the case of bending outward, the deflection restricting portion 5 can restrict the change in relative position between the upper row rotating body 3 and the lower row rotating body 4 which are connected to each other. Therefore, it is possible to suppress deformation of the upper row rotating body 3 and the lower row rotating body 4 that are connected to each other so as to move away from each other. As a result, an object P (dehydrated cake PC) having a relatively low water content can be obtained, and the rotating shaft 30 of the laminated rotary filter body 300 is moved along the conveying path R by the object P having a relatively low water content. It is possible to suppress the bending toward the outside from. In addition, in the first embodiment, the deflection restricting portion 5 does not generate stress for restricting the downward movement of the upper row rotating body 3 and the lower row rotating body 4 . As a result, the deflection restricting portion 5 does not require mechanical strength to withstand this stress, so that the deflection restricting portion 5 can be prevented from increasing in size.

In addition, in the first embodiment, as described above, the deflection restricting portion 5 is configured such that at least one of the upper row rotating bodies 3 and at least one of the lower row rotating bodies 4 are separated from the housing portion 1 . It is configured to be connected in a state where As a result, the deflection restricting portion 5 is connected to at least one of the upper row rotating bodies 3 and at least one of the lower row rotating bodies 4, and the upper row rotating bodies 3 and the lower row rotating bodies 4 are connected to each other. is attached to the housing portion 1, the work of fixing the deflection restricting portion 5 to the housing portion 1 becomes unnecessary. As a result, it is possible to suppress an increase in the number of assembling operations of the dehydrator 101 .

Further, in the first embodiment, as described above, the deflection restricting portion 5 includes the upper hole portion 52a through which the rotating shaft 30 of the upper row rotating body 3 extends, and the rotating shaft 30 of the lower row rotating body 4. A single plate-like member 51 provided with a lower hole portion 52b arranged therethrough is provided. As a result, the rotating shafts 30 can be connected to each other by the single plate-like member 51. Therefore, unlike the case where the rotating shafts 30 are connected to each other by a plurality of members, the strength of the deflection restricting portion 5 can be improved and the assembly can be performed. It is possible to improve the quality.

Further, in the first embodiment, as described above, the deflection restricting portion 5 includes the bearing member 53 that holds the rotating shaft 30 arranged in the upper hole portion 52a of the single plate-like member 51, and the single plate-like member 51. and a bearing member 53 for holding the rotating shaft 30 disposed in the lower hole portion 52b of the shaped member 51 is provided. Thereby, the rotating shafts 30 can be easily rotatably held by the bearing members 53 .

Further, in the first embodiment, as described above, the housing portion 1 includes the undiluted solution supply port 11 for supplying the processing object P to the inside of the housing portion 1, and the processing object P through the housing. A solids outlet 12 is provided for discharging to the outside of the part 1 . The dehydrator 101 includes first rotating bodies 31 to 34 and 41 to 43 arranged on the discharge port side of the casing 1 and second rotating bodies 31 to 43 arranged on the supply port side of the casing 1. Bodies 35, 36 and 44-48 are provided. The deflection restricting portion 5 is configured to connect the first rotating bodies 31 to 34 and the first rotating bodies 41 to 43 . As a result, the deflection restricting section 5 prevents the rotation shafts 30 of the first rotors 31 to 34 and 41 to 43, which are arranged on the discharge port side of the housing section 1 and have a relatively high possibility of deflection, from bending. , can be effectively suppressed.

Further, in the first embodiment, as described above, the upper row rotating body 3 and the lower row rotating body 4 are each provided with a plurality of laminated rotating filter bodies 300 . An intermediate plate member 300a provided between a plurality of laminated rotating filter bodies 300 is provided on the second rotating bodies 35, 36 and 44-48. The deflection restricting portion 5 is arranged at a position corresponding to the intermediate plate member 300a among the first rotors 31 to 34 and 41 to 43 instead of the intermediate plate member 300a. Thereby, unlike the case where a part of the plurality of laminated rotary filter bodies 300 is replaced as the deflection regulating portion 5, deterioration of the filtration function of the plurality of laminated rotary filter bodies 300 can be suppressed.

Further, in the first embodiment, as described above, the dehydration system 100 is provided with the filtrate receiver 103a that receives the filtrate PL discharged from the concentrator 102 . The filtrate receiver 103a is configured to be able to separately discharge the filtrate PL discharged from the concentrator 102 and the filtrate discharged from the first rotating body. As a result, the filtrate receiving part 103a can prevent the relatively clear filtrate PL and the relatively dirty filtrate PL from being mixed. Therefore, relatively clear filtrate can be quickly discharged.

In the first embodiment, as described above, at least one of the upper row rotating body 3 and the lower row rotating body 4 is provided in the deflection restricting portion 5 above the upper row rotating body 3 . A holding member arranging hole 54 is provided in which a holding member 55 for hanging the deflection restricting portion 5 from above during work is arranged. Thus, during maintenance work, by arranging the holding member 55 in the holding member arranging hole 54, the deflection restricting portion 5, the upper row rotating body 3, and the lower row rotating body 4 can be hung. . As a result, even if a part of the housing 1 that holds the upper row rotating body 3 and the lower row rotating body 4 is removed during maintenance work, the upper row rotating body 3 and the lower row rotating body 4 can be rotated through the deflection restricting portion 5 . Since the body 4 can be hung, maintenance work can be performed while maintaining the arrangement positions of the upper row rotating body 3 and the lower row rotating body 4 . That is, the member that functions as the deflection restricting portion 5 during operation of the dehydrator 101 can be used as a jig for suspending the upper row rotating body 3 and the lower row rotating body 4 during maintenance work of the dehydrator 101. can.

Further, in the first embodiment, as described above, the laminated rotary filter body 300 includes a plurality of small-diameter disc filter pieces 302 and a plurality of medium-diameter disc filter pieces having a larger diameter than the small-diameter disc filter pieces 302. A piece 301 and a plurality of large-diameter disc filter pieces 303 having a diameter larger than that of the medium-diameter disc filter piece 301 are provided. A medium-diameter disc filter piece 301 is fitted with a small-diameter disc filter piece 302 and a large-diameter disc filter piece 303, and is provided with protrusions 301b and 301c that contact the adjacent medium-diameter disc filter piece 301. FIG. The laminated rotary filter body 300 is configured by alternately laminating the small-diameter disc filter pieces 302 and the large-diameter disc filter pieces 303 between the adjacent medium-diameter disc filter pieces 301 so as to be able to swing. do. Then, the deflection regulating portion 5 is arranged so as to be laminated on the rotary shaft 30 together with the laminated rotary filter body 300 . As a result, the protrusions 301b and 301c maintain the interval between the medium-diameter disc filter pieces 301 adjacent to each other, and the large-diameter disc filter pieces 303 and the small-diameter disc filter pieces 302 swing to move the filtration grooves S. clogging can be suppressed. As a result, the deflection of the rotating shaft 30 can be restricted by the deflection restricting portion 5 laminated on the rotating shaft 30 together with the layered rotary filter body 300 while suppressing clogging of the filter grooves S.

[Second embodiment]
Next, the configuration of a dehydration system 200 according to a second embodiment of the present invention will be described with reference to FIG. The dehydrator 201 of the dehydration system 200 of the second embodiment is provided with a first deflection restricting portion 205a and a second deflection restricting portion 205b formed separately from the first deflection restricting portion 205a. In addition, the same code|symbol is attached|subjected about the structure similar to the said 1st Embodiment, and description is abbreviate|omitted.

As shown in FIG. 13 , a dehydration system 200 according to the second embodiment includes a dehydrator 201 . The dehydrator 201 includes a first deflection restricting portion 205a and a second deflection restricting portion 205b. The second deflection restricting portion 205b is formed separately from the first deflection restricting portion 205a, and is a first rotor 33 different from the first rotating bodies 31, 32 and 41 to which the first deflection restricting portion 205a is connected. It is configured to connect 34, 42 and 43.

For example, the first deflection restricting portion 205a and the second deflection restricting portion 205b are arranged adjacent to each other in the front-rear direction. In addition, the first deflection restricting portion 205a and the second deflection restricting portion 205b are not fixed to each other, and are arranged to independently restrict the bending deformation of the first rotors 31 to 34 and 41 to 43, respectively. It is configured. Other configurations of the second embodiment are the same as those of the first embodiment.

[Effect of Second Embodiment]
The following effects can be obtained in the second embodiment.

In the second embodiment, as described above, the first deflection restricting portion 205a and the first deflection restricting portion 205a are separately formed in the dehydrator 201, and the first rotation restricting portion 205a is connected to the first deflection restricting portion 205a. and a second deflection restricting portion 205b connecting the first rotating bodies 33, 34, 42 and 43 different from the bodies 31, 32 and 41, respectively. As a result, the force applied to each of the deflection restricting portions 205a and 205b can be dispersed by the first deflection restricting portion 205a and the second deflection restricting portion 205b. Deformation can be suppressed. Further, the number of rotating shafts 30 combined with each first deflection restricting portion 205a (second deflection restricting portion 205b) can be reduced. As a result, it is possible to improve the assembling property between the first deflection restricting portion 205a (the second deflection restricting portion 205b) and the rotary shaft 30. As shown in FIG.

[Third embodiment]
Next, with reference to FIG. 14, the configuration of a dehydration system 400 according to a third embodiment of the present invention will be described. The dehydrator 401 of the dehydration system 400 of the third embodiment includes, in addition to the first rotating bodies 31 to 34 and 41 to 43, second rotating bodies 35 and 36 for vertically squeezing the object to be processed P and A deflection regulating portion 405 connecting 44 to 46 is provided. In addition, the same code|symbol is attached|subjected about the structure similar to the said 1st Embodiment, and description is abbreviate|omitted.

As shown in FIG. 14, a dehydration system 400 according to the third embodiment includes a dehydrator 401 and a concentrator 102 (see FIG. 1). The dehydrator 401 includes a deflection restricting portion 405 .

Here, the second rotating bodies 35, 36 and 44 to 46 out of the second rotating bodies 35, 36 and 44 to 48 squeeze the material to be processed P in the vertical direction, and from the undiluted solution supply port 11 side. It is configured as a squeezing rotating body that conveys the material to be processed P toward the solid discharge port 12 side. Further, the second rotating bodies 47 and 48 out of the second rotating bodies 35, 36 and 44 to 48 are rotated from the undiluted solution supply port 11 side to the solid discharge port 12 side with the object P placed thereon. It is configured as a conveying rotating body for conveying the object P to be processed.

The deflection restricting portion 405 is configured to connect the second rotating bodies 35, 36 and 44 to 46 configured as pressing rotating bodies in addition to the first rotating bodies 31 to 34 and 41 to 43. ing. Other configurations of the third embodiment are the same as those of the first embodiment.

[Effect of the third embodiment]
The following effects can be obtained in the third embodiment.

In the third embodiment, as described above, the dehydration system 400 is provided with the concentrator 102 arranged upstream of the undiluted solution supply port 11 . Then, while the rotating bodies 35, 36 and 44 to 46 out of the second rotating bodies 35, 36 and 44 to 48 are vertically squeezing the material to be processed P, the solid discharge port 12 is discharged from the undiluted solution supply port 11 side. It is configured as a pressing rotating body that conveys the material to be processed P toward the side. Further, the second rotating bodies 47 and 48 out of the second rotating bodies 35, 36 and 44 to 48 are moved from the undiluted solution supply port 11 side to the solid discharge port 12 side with the object P placed thereon. is configured as a conveying rotator for conveying the object P to be processed. Then, the deflection restricting portion 405 is configured to connect the upper row rotating body 3 corresponding to the pressing rotating body and the lower row rotating body 4 corresponding to the pressing rotating body. As a result, after the moisture content of the material P to be processed is reduced to some extent by the concentrator 102, the moisture content of the material to be processed P can be decreased by the dehydrator 401, and the processing time in the dehydrator 401 can be shortened by using the dehydrator 401 alone. can be shorter than when operated with Then, the deflection restricting portion 405 is configured to connect the upper row rotating body 3 corresponding to the pressing rotating body and the lower row rotating body 4 corresponding to the pressing rotating body. As a result, in addition to the first rotating bodies 31 to 34 and 41 to 43, the second rotating bodies 35, 36 and 44 to 46 are more likely to be bent. can be suppressed. Other effects of the third embodiment are the same as those of the first embodiment.

[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.

(First modification)
For example, in the above-described first to third embodiments, an example in which the deflection restricting portion is provided at the central portion in the left-right direction has been shown, but the present invention is not limited to this. For example, as in the multi-disk type dehydrator 501 according to the first modified example shown in FIG. 504), two deflection restricting portions 505 may be provided at intervals in the left-right direction. Also, the number of deflection restricting portions is not limited to one or two, and may be three or more.

(Second modification)
Further, in the above-described first to third embodiments, an example in which the concentrator is configured as a screw type concentrator is shown, but the present invention is not limited to this. That is, the concentrator may be configured by a concentrator other than the screw type concentrator. For example, a dehydration system 600 according to the second modification shown in FIG. The multiple disk type concentrator 602 includes a plurality of rotating bodies 623 and is configured to condense the material to be processed P while conveying the material to be processed P to the dehydrator 101 side.

(Third modification)
Further, in the first to third embodiments, an example is shown in which the holding member arrangement hole is configured as a hole for fixing the holding member to the housing during maintenance work. is not limited to For example, a deflection regulating portion 705 of a dewatering system 700 according to the third modified example shown in FIG. 17 is provided with a hole portion 754 in which a shackle 755 is arranged. During maintenance work, the shackle 755 is hung by a crane (not shown) to hold the upper row rotor 3 connected by the deflection restricting portion 705 .

(Fourth modification)
Further, in the above-described first to third embodiments, all of the plurality of motors are provided at one end of the rotating shaft, but the present invention is not limited to this. For example, as in a multi-disk type dehydrator 801 according to a fourth modification shown in FIGS. The other part of the plurality of motors 2 may be provided at the other end (Y2 direction side end).

Specifically, as shown in FIG. 18, in a multi-disc dehydrator 801 according to the fourth modification, the rotating shafts 30 of the first rotating bodies 32 and 34 out of the first rotating bodies 31 to 34 , the motor 2 is connected to one end (Y1 direction side end), and the motor 2 is connected to the other end (Y2 direction side end) of the rotating shaft 30 of the first rotating bodies 31 and 33. 2 is connected. In addition, the motor 2 is connected to one end (Y1 direction side end) of the rotating shaft 30 of the first rotating body 41 of the first rotating bodies 41 and 42. The motor 2 is connected to the other end (Y2 direction side end) of the rotating shaft 30 of the rotating body 42 .

Specifically, as shown in FIG. 19 , the motor 2 connected to one end of the rotating shaft 30 rotates the rotating shaft 30 via the speed reducer 21 outside the right side plate portion 18 (Y1 direction side). It is connected to one end. Also, the motor 2 connected to the other end of the rotating shaft 30 is connected to the other end of the rotating shaft 30 via a speed reducer 21 on the outside (Y2 direction side) of the left side plate portion 17 . As a result, the force for conveying the object P to be processed can be distributed in a well-balanced manner in one direction (Y1 direction) and the other direction (Y2 direction) in the axial direction. Therefore, even on the side of the solid discharge port 12 where the solid component of the material to be processed P becomes hard, it is possible to prevent a large torsional force from acting on the rotary shaft 30 . As a result, it is possible to suppress an increase in the possibility that a torsional force acts on the rotating shaft 30 and causes bending deformation. This effect is obtained when the rotating shaft 30 is configured to be elongated in the axial direction in order to increase the throughput, and when applied to a large multi-disc type dewatering machine 801 in which the torsional force acting on the rotating shaft 30 tends to be relatively large. Especially effective.

Alternatively, motors may be provided at both one end (Y1 direction end) and the other end of the rotating shaft. In this case, for example, the motors are arranged on both sides of the rotation shaft of the first to third or first to fourth upper row rotors from the solid discharge port side among the six upper row rotors. In addition, motors are arranged on both sides of the rotation shaft of the first to third lower row rotors from the solid discharge port side among the eight lower row rotors. As a result, the rotating shaft is driven by the motor from both sides of the rotating shaft, so even if the rotating shaft is configured to be relatively long in the axial direction, it is possible to suppress an increase in torsional force on the rotating shaft.

(Other modifications)
Further, in the above-described first to third embodiments, an example is shown in which the dehydrator is configured as a dehydration system in combination with a concentrator or the like, but the present invention is not limited to this. In other words, the dehydrator may be used alone without being used in combination with a concentrator or the like.

In addition, in the above-described first to third embodiments, the medium-diameter disc filter pieces are arranged such that the projection amount of the convex portion on one surface of the medium-diameter disc filter piece and the projection amount of the convex portion on the other surface of the medium-diameter disc filter piece are different from each other. is shown, the present invention is not limited to this. In the present invention, the medium-diameter disk filter piece may be formed so that the projection amount of the convex portion on one surface of the medium-diameter disk filter piece and the projection amount of the projection portion on the other surface of the medium-diameter disk filter piece are the same. .

In addition, in the first to third embodiments, an example in which convex portions are formed on one surface and the other surface of the medium-diameter disc filter piece has been described, but the present invention is not limited to this. In the present invention, convex portions may be formed on only one of the one surface and the other surface of the medium-diameter disc filter piece.

1 housing part (housing)
3, 503 upper row rotator (rotator)
4, 504 lower row rotator (rotator)
5, 405, 505, 705 Deflection regulating portion 11 Undiluted solution supply port (supply port)
12 solids discharge port (discharge port)
30 Rotating shafts 31 to 34, 41 to 43 First rotating bodies 35, 36, 44 to 48 Second rotating body 51 Plate-like member (deflection restricting member)
52a upper hole 52b lower hole 53 bearing member (first bearing member, second bearing member)
54, 754 holding member placement hole (holding member placement portion)
55 holding member 100, 200, 400, 600, 700 dehydration system 101, 201, 401, 801 multiple disk type dehydrator (dehydrator)
102 screw type concentrator (concentrator)
103a Liquid receiving portion 205a First deflection regulating portion 205b Second deflection regulating portion 300 Laminated rotary filter body 300a Intermediate plate member 301 Medium diameter disc filter pieces 301b, 301c Convex portion 302 Small diameter disc filter piece 303 Large diameter disc filter Piece 602 Multiple disc concentrator (concentrator)
755 shackle (holding member)
801 Multiple disk type dehydrator

Claims (7)

a housing;
A rotating shaft rotatably arranged in the housing, and a layered rotation having a plurality of filter pieces stacked along the axial direction of the rotating shaft and having filter grooves formed between the plurality of filter pieces. a plurality of rotating bodies arranged side by side in an upper row and a lower row, each including a filter body;
formed separately from the housing, connecting at least one of the plurality of rotating bodies in the upper row and at least one of the plurality of rotating bodies in the lower row; and a deflection restricting portion that restricts outward deflection of the rotating shaft from a conveying path for conveying an object to be processed formed between the rotating body of the lower row ,
The housing is provided with a supply port through which the object to be processed is supplied to the inside of the housing, and a discharge port through which the object to be processed is discharged to the outside of the housing. ,
The plurality of rotating bodies are composed of a first rotating body arranged on the discharge port side and a second rotating body arranged on the supply port side of the housing rather than the first rotating body. and
the first rotating body, wherein the rotating body in the upper row and the rotating body in the lower row face each other in the vertical direction;
Among the second rotating bodies, the most upstream rotating body is not opposed to the upper row of rotating bodies and the lower row of rotating bodies in the vertical direction,
The plurality of rotating bodies each include a plurality of the laminated rotating filter bodies,
The second rotating body is provided with an intermediate plate member provided between the plurality of laminated rotating filter bodies,
The deflection restricting portion is arranged in place of the intermediate plate member at a position of the first rotating body corresponding to the intermediate plate member in a state in which it is not fixed to the housing, and is configured to perform the first rotation. A multi-disc dehydrator configured to connect said upper row of rotors corresponding to a body and said lower row of rotors corresponding to said first rotor. The deflection restricting portion includes an upper hole through which an upper rotating shaft, which is the rotating shaft of at least one of the rotating bodies in the upper row, passes through; 2. The multiple disc mold according to claim 1 , comprising a single deflection restricting member provided with a lower hole through which the lower rotating shaft, which is the rotating shaft of at least one of the rotating bodies, is arranged. Dehydrator. The deflection restricting part includes a first bearing member that holds the upper rotating shaft arranged in the upper hole of the single deflection restricting member, and arranged in the lower hole of the single deflection restricting member. and a second bearing member for holding said lower rotating shaft. The deflection restricting part is formed separately from a first deflection restricting part and the first deflection restricting part, and connects a rotating body different from the rotating body to which the first deflection restricting part connects. 4. The multiple disk type dehydrator according to any one of claims 1 to 3 , further comprising a second deflection restricting portion. The deflection restricting portion is provided at a portion above the upper row of rotors so as to allow the deflection from above when maintenance work is performed on at least one of the upper row of rotors and the lower row of rotors. 5. The multi-disk type dehydrator according to any one of claims 1 to 4 , further comprising a holding member arrangement portion in which a holding member for suspending the restricting portion is arranged. The laminated rotary filter body includes a plurality of small-diameter disc filter pieces, a plurality of medium-diameter disc filter pieces having a diameter larger than that of the small-diameter disc filter pieces, and a diameter larger than that of the medium-diameter disc filter pieces. and a plurality of large-diameter disc filter pieces having
The medium-diameter disc filter pieces are fitted with the small-diameter disc filter pieces and the large-diameter disc filter pieces, and have a convex portion that abuts on the adjacent medium-diameter disc filter pieces,
The laminated rotary filter body is configured by alternately laminating the small-diameter disc filter pieces and the large-diameter disc filter pieces between the adjacent medium-diameter disc filter pieces so as to be rockable. cage,
The multi-disc dehydrator according to any one of claims 1 to 5 , wherein the deflection regulating part is arranged so as to be laminated on the rotating shaft together with the laminated rotary filter body. a concentrator for concentrating the object to be processed;
a dehydrator including a housing having a supply port to which the concentrated material to be processed is supplied from the concentrator;
The dehydrator is
A rotating shaft rotatably arranged in the housing, and a layered rotation having a plurality of filter pieces stacked along the axial direction of the rotating shaft and having filter grooves formed between the plurality of filter pieces. a plurality of rotating bodies arranged side by side in an upper row and a lower row, each including a filter body;
formed separately from the housing, connecting at least one of the plurality of rotating bodies in the upper row and at least one of the plurality of rotating bodies in the lower row; and a deflection restricting portion that restricts outward deflection of the rotating shaft from a conveying path for conveying the object to be processed formed between the rotating body of the lower row ,
The housing is provided with a discharge port for discharging the object to be processed to the outside of the housing,
The plurality of rotating bodies are composed of a first rotating body arranged on the discharge port side and a second rotating body arranged on the supply port side of the housing rather than the first rotating body. and
the first rotating body, wherein the rotating body in the upper row and the rotating body in the lower row face each other in the vertical direction;
Among the second rotating bodies, the most upstream rotating body is not opposed to the upper row of rotating bodies and the lower row of rotating bodies in the vertical direction,
The plurality of rotating bodies each include a plurality of the laminated rotating filter bodies,
The second rotating body is provided with an intermediate plate member provided between the plurality of laminated rotating filter bodies,
The deflection restricting portion is arranged in place of the intermediate plate member at a position of the first rotating body corresponding to the intermediate plate member in a state in which it is not fixed to the housing, and is configured to perform the first rotation. A dehydration system configured to couple the upper row of rotators corresponding to a body and the lower row of rotators corresponding to the first rotator.

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