JP2010172784A - Solid-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid/liquid separator including a plurality of fixed members, a plurality of movable members each disposed between the neighboring fixed members, and a dehydrating screw penetrating and extending through the plurality of fixed members and the plurality of movable members to transfer sludge by its rotation in an inner space demarcated by the fixed members and the movable members and to cause filtered liquid to flow down through gaps for discharging the filtered liquid each formed between the fixed member and the adjacent movable member, whereby the abrasion of the movable members is eliminated and the maintenance cost therefor is reduced. <P>SOLUTION: The dehydrating screw 24 is disposed in a manner of not contacting the movable members 4. The plurality of the movable members 4 are connected by a connecting rod 52. A pair of driven rollers 40 arranged in specific movable members 4A out of the plurality of the movable members 4 are caused to reciprocate by a rotating cam 43 whereby all of the plurality of the movable members 4 are caused to reciprocate. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a plurality of fixed members, a movable member disposed between adjacent fixed members, and at least one liquid removal screw extending through the fixed member and the movable member. The present invention relates to a solid-liquid separation device that performs a liquid removal process while conveying a processing object including a liquid by rotation.

  Processed objects containing liquids, such as waste tofu, food processing wastewater, sewage treatment products, or organic sludge such as wastewater discharged from pig farms, sludge obtained by decomposing organic sludge by microorganisms, plating wastewater, ink wastewater Solid-liquid separation devices of the above-mentioned type that separate liquids from inorganic sludges such as pigment waste liquids and paint waste liquids, or processing objects such as vegetable scraps and fruit peels, food residues, and okara are well known (patents). References 1 to 3). Conventionally, in this type of solid-liquid separator that has been generally used, the movable member is operated by the rotation of the liquid removal screw to prevent clogging of the solid content in the filtrate discharge gap between the fixed member and the movable member. ing. However, in this type of solid-liquid separator, the movable member is pressurized and operated by the rotating liquid removal screw, so that the movable member is worn relatively early. For this reason, it is necessary to replace the movable member with advanced wear with a new movable member. However, since the movable member is a considerably expensive member, the running cost of the solid-liquid separation device accompanying the replacement of the member increases. I can't escape my shortcomings.

  Therefore, a member to be pressed is detachably attached to each movable member, and each member to be pressed is reciprocated by a rotating drive screw, whereby the movable member is operated with respect to the fixed member. The present applicant has proposed a solid-liquid separator that prevents clogging of the solid content in the filtrate discharge gap with the movable member (Patent Document 4). According to such a solid-liquid separation device, it is not necessary to bring the dewatering screw into contact with the movable member, so that it is possible to prevent a problem that the movable member is worn early. However, in this type of solid-liquid separation device, a member to be pressed is attached to each of a large number of movable members, so that when the member to be pressed is worn, these members to be pressed are newly covered. The work of exchanging with the pressurizing member becomes complicated, and it is inevitable that the work requires a lot of time.

JP-A-5-228695 Japanese Patent No. 3565841 Japanese Patent No. 3638597 Japanese Patent No. 40363383

  An object of the present invention is to provide a solid-liquid separation apparatus that can alleviate the above-mentioned conventional drawbacks.

  The present invention relates to a plurality of fixed members, a movable member disposed between adjacent fixed members, and a drainage screw that extends through the movable member and the fixed member without contacting the movable member and the fixed member. And a pressurized member detachably attached to some of the movable members, and a driving means for driving the pressurized member so that the pressurized member reciprocates. A solid-liquid separation device comprising: a movable member to which the member to be pressurized is attached and a connecting means for connecting the movable members so that the movable member to which the member to be pressurized is not attached reciprocates together. Propose.

  In the solid-liquid separator, the driving means is constituted by a cam, the pressed member is constituted by a driven roller rotatably supported by the movable member, and the cam is in contact with the driven roller. It is advantageous if the driven roller is pressurized so as to reciprocate the driven roller and the movable member.

  Furthermore, in the solid-liquid separator, it is advantageous that the cam is fixed to a shaft that is rotationally driven by a motor and is configured to be rotationally driven together with the shaft by the motor.

  In the solid-liquid separator, it is advantageous that the cam is made of a material having higher wear resistance than the driven roller.

  Furthermore, in the solid-liquid separator, the driving means is constituted by a driving screw that is rotationally driven, and the pressurized member is constituted by a pressurized plate detachably fitted to the movable member, and the driving The screw extends through a hole formed in the pressed plate, reciprocates the pressed plate with the movable member by rotation of the drive screw, and contacts at least the pressed plate of the drive screw. It is advantageous that the portion to be formed is made of a material having higher wear resistance than the pressed member.

  According to the present invention, since each movable member is not in contact with the liquid removal screw, a problem that the movable member is worn early can be prevented. When wear of the member to be pressed progresses, it is necessary to replace it with a new member to be pressed. However, the member to be pressed is attached only to some movable members. Is less than before. Therefore, the member to be pressed can be replaced easily and in a short time. In addition, since the movable member to which the member to be pressurized is attached and the movable member to which the member to be pressurized is not attached are connected by the connecting means, these movable members can reciprocate together. Thus, it is possible to prevent the trouble that the solid content is clogged in the filtrate discharge gap between the movable member and the fixed member without any trouble.

It is a partial cross section front view of a solid-liquid separator. It is a perspective view which shows two movable members adjacent and the movable member arrange | positioned between the two fixed members. It is a longitudinal cross-sectional view of a part of the solid-liquid separator. It is the IV-IV line expanded sectional view of FIG. It is the VV line expanded sectional view of FIG. It is sectional drawing similar to FIG. 4 of the solid-liquid separator which has two liquid removal screws. FIG. 5 is a cross-sectional view similar to FIG. 4 of a solid-liquid separator having three liquid removal screws. It is sectional drawing similar to FIG. 4 of the solid-liquid separation apparatus which has a fixed member and movable member of another form. It is a figure which shows a part of solid-liquid separator which reciprocates a to-be-pressurized plate with a drive screw.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a partial cross-sectional front view of a solid-liquid separator. Various processing objects including liquid can be solid-liquid separated by this solid-liquid separation device. Here, a case where a sludge containing a large amount of water is dehydrated will be described.

  The solid-liquid separation device shown in FIG. 1 includes an inlet member 1 formed in a box shape with an upper part opened, an outlet member 2 having a rectangular cross-sectional shape with an upper part and a lower part opened, and the inlet member 1 and the outlet. A plurality of fixed members 3 and a movable member 4 disposed between the members 2 are provided. The upper opening of the inlet member 1 is an inlet 5 through which sludge flows, and the lower portion of the inlet member 1 is closed by the bottom wall 6. An opening 8 is formed in the side wall 7 of the inlet member 1 on the side facing the fixed member 3 and the movable member 4. Similarly, an opening 10 is also formed in the side wall 9 of the outlet member 2 facing the fixed member 3 and the movable member 4, and the dehydrated cake-like sludge is discharged from the lower opening of the outlet member 2. It is a discharge port 11. Lower portions of the outlet member 2 and the inlet member 1 are fixedly supported by the stays 12 and 13 of the support frame.

  2 is a perspective view showing two adjacent fixed members 3 and one movable member 4 disposed between the two fixed members 3. FIG. 3 is an enlarged view of the plurality of fixed members 3 and the movable members 4. FIG. It is a longitudinal cross-sectional view. 4 is an enlarged sectional view taken along line IV-IV in FIG. As shown in FIGS. 1 to 4, a plurality of small ring-shaped spacers 14 are arranged between adjacent fixing members 3, and the plurality of fixing members 3 are spaced apart from each other in the axial direction by the spacers 14. The movable members 4 are arranged concentrically with a gap between the adjacent fixed members 3. In the illustrated example, four spacers 14 are arranged between the adjacent fixing members 3. Further, the fixed member 3 and the movable member 4 of this example are both constituted by a plate material in which circular holes 15 and 16 are formed.

  As shown in FIGS. 1 to 4, four fixing holes 17 are formed in each fixing member 3, and a stay is formed in the central hole of the spacer 14 arranged between each mounting hole 17 and each fixing member 3. Bolts 18 extend through each. As shown in FIG. 1, each stay bolt 18 penetrates the side wall 7 of the inlet member 1 and the side wall 9 of the outlet member 2, and a nut is attached to a male screw formed at each longitudinal end of each stay bolt 18. 19 and 20 are respectively screwed and tightened. As a result, the plurality of fixing members 3 are fixedly connected integrally to each other, and the fixing members 3 are fixed to the inlet member 1 and the outlet member 2.

  The fixing members 3 that are spaced from each other by the spacers 14 can be assembled so that they can slightly move. Further, a spacer is integrally formed on one of the two adjacent fixing members, and a gap is formed between the two adjacent fixing members by the spacer, and the movable member 4 is disposed here. You can also. Furthermore, in the solid-liquid separator shown in FIGS. 1 to 4, one movable member 4 is disposed between two adjacent fixed members 3, but a plurality of movable members are disposed between adjacent fixed members 3. The member 4 can also be arranged. At least one movable member 4 is arranged between the adjacent fixed members 3.

  As shown in FIG. 3, the thickness T of each movable member 4 disposed between the fixed members 3 is set smaller than the gap width G between the fixed members, and the end surfaces of the fixed members 3 A minute filtrate discharge gap g of about 0.1 mm to 1 mm, for example, is formed between the end surfaces of the movable member 4 facing the surface. The microfiltrate discharge gap g is a gap for allowing water separated from sludge, that is, a filtrate to pass through, as will be described later. The thickness T of the movable member 4 is set to about 1.0 mm to 2 mm, for example, and the gap width G is set to about 2 mm to 3 mm, for example. The thickness t of the fixing member 3 is set to, for example, about 1.5 mm to 3 mm. The sizes of the filtrate discharge gap g, the thicknesses T and t, and the gap width G are appropriately set in consideration of the type of processing object.

  Each movable member 4 disposed between adjacent fixed members 3 can reciprocate in the directions indicated by arrows E and F in FIG. 4 as will be described later. At that time, each movable member 4 is guided by two spacers 14 located on each side thereof.

  As can be seen from FIGS. 1 to 4, the opening 8 formed in the side wall 7 of the inlet member 1, circular holes 15 and 16 formed in the fixed member 3 and the movable member 4, respectively, and the side wall 9 of the outlet member 2. A substantially continuous through-hole-shaped internal space S (FIGS. 3 and 4) is formed by the opening 10 formed in. Thus, in the solid-liquid separation device of this example, the spacers 14 are arranged at intervals in the axial direction and fixed to each other by the stay bolts 18, and the adjacent fixing members 3. The movable member 4, the side wall 7 of the inlet member 1, and the side wall 9 of the outlet member 2 constitute a solid-liquid separation unit 21 that separates the liquid from the object to be treated (sludge in this example). Thus, the interior of the solid-liquid separation part 21 is formed hollow, and the opening 8 of the side wall 7 of the inlet member 1 constitutes the inlet 22 of the internal space S of the solid-liquid separation part 21, and the side wall 9 of the outlet member 2 The opening 10 constitutes an outlet 23 of the internal space S of the solid-liquid separator 21.

  In the internal space S of the solid-liquid separation part 21 described above, a liquid removal screw 24 extending in the axial direction is arranged. The drainage screw 24 includes a shaft portion 25 and a spiral blade portion 26 formed integrally with the shaft portion 25, and the end portion of the shaft portion 25 on the inlet member 1 side is the inlet member 1. The other end side of the shaft member 25 on the outlet member 2 side is connected to the other side wall 29 of the outlet member 2 via a bearing. And is supported rotatably.

  In FIG. 4, only the outer shape of the drainage screw 24 is simplified and shown by a two-dot chain line. As can be seen from this figure, the outer diameter of the blade portion 26 of the drainage screw 24 is movable with the fixed member 3. The diameter is set smaller than the diameter of each of the circular holes 15 and 16 formed in the member 4. Moreover, the outer diameter of the blade portion 26 is set to be smaller than the diameter of the openings 8 and 10 formed in the side walls 7 and 9, and even when each movable member 4 reciprocates as will be described later, the liquid is removed. The screw 24 does not contact the movable member 4 and the fixed member 3. Thus, since the solid-liquid separation device of this example is provided with the drainage screw 24 that extends through the movable member 4 and the fixed member 3 without contacting the movable member 4 and the fixed member 3. is there.

  As indicated by an arrow A in FIG. 1, sludge containing a large amount of moisture is fed into the inlet member 1 from the inlet 5. In that case, the moisture content of the sludge before a process is about 99 weight%, for example, the flocculant is previously mixed in this sludge, and the sludge is flocked. When such sludge flows into the inlet member 1, the drainage screw 24 is driven to rotate by the operation of the motor 28, so that the sludge enters the side wall 7 of the inlet member 1 as shown by arrow B in FIG. 1. It flows into the internal space S of the fixed member 3 and the movable member 4 through the formed opening 8. Thus, the sludge flows into the internal space S of the solid-liquid separator 21 from the inlet 22 on one end side in the axial direction. In addition, illustration of sludge is abbreviate | omitted in each figure.

  The sludge that has flowed into the solid-liquid separator 21 as described above is removed by the liquid removal screw 24 that is rotationally driven by the motor 28 as shown by the broken line arrow C in FIGS. 21 is conveyed toward the outlet 23 on the other axial end side. At this time, the water separated from the sludge, that is, the filtrate is discharged out of the solid-liquid separator through the filtrate discharge gap g (FIG. 3) between each fixed member 3 and the movable member 4. As shown in FIG. 1, the discharged filtrate is received by the filtrate receiving member 30 fixed to the stays 12 and 13, and then flows down through the filtrate discharge pipe 31. Since this filtrate still contains some solids, the filtrate is again water-treated with other sludge and then supplied again to the solid-liquid separator for dehydration.

  As described above, the moisture content of the sludge in the solid-liquid separator 3 is lowered, and the cake-like sludge having a reduced water content is reduced in the axial direction of the solid-liquid separator 21 as indicated by the arrow D in FIG. It is discharged from the outlet 23 on the end side. The sludge discharged from the solid-liquid separator 21 falls downward through the outlet 11 at the bottom of the outlet member 2. The water content of the dewatered cake sludge is, for example, about 80% by weight.

  As described above, the solid-liquid separation device rotationally drives the screw disposed in the solid-liquid separation unit, and moves the processing object that has entered the solid-liquid separation unit toward the outlet of the solid-liquid separation unit. The filtrate separated from the treatment object is discharged out of the solid-liquid separation part through the filtrate discharge gap of the solid-liquid separation part, and the treatment object having a reduced liquid content is solidified from the outlet of the solid-liquid separation part. It is comprised so that it may discharge outside a liquid separation part.

  When the sludge is dehydrated as described above, the solid-liquid separation device of the present example has the following configuration in order to prevent clogging of the filtrate in the filtrate discharge gap g between the fixed member 3 and the movable member 4. is doing.

  The solid-liquid separation device has a large number of movable members 4, but in FIG. 1, two of the movable members 4 are indicated by 4 </ b> A. As shown in FIGS. 1 and 4, these movable members 4 </ b> A include a main body portion 32 that is formed in the same manner as the other movable members 4, a bolt 34 on the main body portion 32, and a nut that is screwed to the bolt 34. And an arm portion 33 made of a plate material fixed by the. The main body portion 32 and the arm portion 33 can also be configured by a single piece that is integrally molded in advance.

  As shown in FIGS. 5 and 4, which are enlarged views of line VV in FIG. 4, a through hole 36 is formed in the arm portion 33 of the movable member 4 </ b> A, and a shaft 37 extends through the through hole 36. ing. In addition, roller units 38 are attached to portions of the arm portion 33 near the through hole 36 at positions facing each other with the shaft 37 interposed therebetween. As shown in FIG. 5, the roller unit 38 includes a bolt 39 and a driven roller 40 that is rotatably fitted to the bolt 39, and tightens a nut 41 screwed to the bolt 39 to tighten the bolt 41. 39 is fixed to the arm portion 33. Further, the roller unit 38 can be detached from the movable member 4A by loosening the nut 41 and removing it from the bolt 39. Thus, the driven roller 40 is rotatably supported by the movable member 4A via the bolt 39 and is detachably attached to the movable member 4A.

  As shown in FIGS. 4 and 5, a boss 42 is fixed to the shaft 37. The boss 42 cannot rotate relative to the shaft 37 and cannot slide in the axial direction. It is assembled to. A cam 43 is fixed to the boss 42 by a bolt 44. The cam 43 shown here is an eccentric cam that is eccentric with respect to the shaft 37.

  As shown in FIG. 1, the end of the shaft 37 on the outlet member side is drivingly connected to a motor 47 supported by a support bracket 45 fixed to the outlet member 2, and the end of the shaft 37 on the inlet member side Is supported rotatably on a support bracket 46 fixed to the inlet member 1 via a bearing.

  Further, as shown in FIGS. 1 and 4, the longitudinal end portions of the pair of support bars 49 are fixed to the support brackets 45 and 46 described above, and the guide roller 50 rotates on the support bars 49. These guide rollers 50 are supported freely, and are in contact with opposing surfaces of the arm portion 33, respectively. In FIG. 5, the support rod 49 is not shown.

  On the other hand, as shown in FIGS. 1, 3 and 4, holes 51 are formed in all the movable members 4 of the movable member 4A provided with the driven roller 40 and the movable member 4 not provided with the driven roller 40. The connecting rods 52 pass through these holes 51, and all the movable members 4 are connected by the connecting rods 52. Locking rings 53 and 54 are fitted and fixed to the respective longitudinal ends of the connecting rod 52, and the connecting rings 52 are prevented from coming out of the movable member 4 by the locking rings 53 and 54. The connecting rod 52 may be fitted in the hole 51 formed in the movable member 4 with some play, or may be tightly fitted in the hole 51 without play.

  As described above, when the sludge is dehydrated while moving in the internal space S of the solid-liquid separator 21, not only the motor 28 but also the other motor 47 is operated, whereby the shaft 37 is connected to the cam 43. At the same time, it rotates around the central axis of the shaft 37. Therefore, the driven roller 40 in contact with the cam 43 reciprocates in the directions indicated by arrows E and F in FIG. 4 together with the movable member 4A while being rotated by being pressed by the cam 43. At this time, each movable member 4A can reciprocate in a straight line while being regulated by the guide rollers 50 arranged on both sides thereof. Further, since the movable member 4A provided with the driven roller 40 is connected to the movable member 4 not provided with the driven roller 40 via the connecting rod 52, all the movable members 4 are moved in the directions of arrows E and F. Reciprocates.

  On the other hand, since the fixed member 3 does not move, the movable member 4 operates relative to the fixed member 3, and thereby the filtrate discharge gap g between the movable member 4 and the fixed member 3 (FIG. 3). The solid content that has entered is efficiently discharged from the gap g, and the solid content is prevented from remaining stuck here. In addition, as described above, since the blade portion 26 of the rotating liquid removal screw 24 does not contact the movable member 4, the movable member 4 is not worn early.

  However, since the driven roller 40 is pressurized while being in contact with the cam 43, it is inevitable that the driven roller 40 is worn over time. Accordingly, at the stage where the wear of the driven roller 40 has progressed, the nut 41 shown in FIG. 5 is removed from the bolt 39, the entire roller unit 38 is detached from the movable member 4A, and the new roller unit 38 is moved by the nut 41. Attach to member 4A. As described above, the driven roller 40 needs to be replaced. However, the driven roller 40 or the roller unit 38 is a member having a small size and low cost as compared with the movable member 4, so that the running cost of the solid-liquid separation device is reduced. Can be kept low. Moreover, since the driven roller 40 is attached only to some of the movable members 4A among the many movable members 4, the replacement operation can be performed easily and in a short time.

  In the solid-liquid separation apparatus described above, the driven rollers 40 of the two movable members 4A among the plurality of movable members 4 are provided. However, the driven rollers 40 of some of the movable members 4 are provided. Then, the intended object of the present invention can be achieved. For some movable members, one or three or more movable members can be attached to the driven roller.

  As can be understood from the above description, the driven roller 40 rotatably supported by the movable member 4A is a member to be pressed that is detachably attached to some of the movable members 4A among the plurality of movable members 4. The cam 43 constitutes an example of a driving unit that drives the pressurized member so that the pressurized member reciprocates. While the cam 43 is in contact with the driven roller 40, the driven roller 40 is pressurized to reciprocate the driven roller 40 and the movable member 4. Further, the connecting rod 52 constitutes an example of connecting means for connecting these movable members so that the movable member to which the member to be pressurized is attached and the movable member to which the member to be pressurized is not attached reciprocate together. is doing.

  In addition, as a cam which is an example of a driving unit, a cam having an appropriate form including a straight cam can be used. However, in the solid-liquid separator of this example, the cam 43 is driven to rotate by a motor 47. Since it is fixed to the shaft 37 and is rotationally driven by the motor 47, the configuration of the driving means can be simplified.

  At that time, it is preferable that the cam 43 is made of a material having higher wear resistance than the driven roller 40. With this configuration, the cam 43 can be used for a long period of time simply by replacing the driven roller 40 or the roller unit 38. For example, the cam 43 is made of hardened iron, and the driven roller 40 is made of stainless steel.

  The solid-liquid separation apparatus described above has one drainage screw 24. However, as is known per se, two or more drainage screws can be provided. In FIG. 6, two drainage screws 24 and 124 extend through the hole 15 formed in the fixed member 3 and the hole 16 formed in the movable member 4, and both the drainage screws 24 and 124. FIG. 7 is a cross-sectional view showing a solid-liquid separator having three liquid removal screws 24, 124, and 224. The other configuration of the solid-liquid separator shown in FIGS. 6 and 7 is not substantially different from the solid-liquid separator shown in FIGS. That is, also in the case of the solid-liquid separator shown in FIGS. 6 and 7, the liquid removal screws 24, 124, and 224 do not contact the fixed member 3 and the movable member 4, and the movable member 4 is the above-described solid-liquid separator. It is reciprocated in exactly the same way as in.

  The fixed member 3 and the movable member 4 of the solid-liquid separation apparatus described above are configured by plate members having holes 15 and 16, respectively. However, the fixed member and the movable member can be formed in other appropriate forms. FIG. 8 shows an example in which the present invention is applied to a solid-liquid separator of the type described in Japanese Patent Nos. 3638597 and 4036383. In the solid-liquid separation apparatus shown here, a plurality of fixing members 103 having recesses 55 formed in the upper portion are arranged at intervals in the axial direction by spacers 114, and at least one movable member is disposed between adjacent fixing members 103. A member 104 is disposed, and a concave portion 56 is also formed on the movable member 104. The plurality of fixed members 103 are fixedly connected by stay bolts 118, and two liquid removal screws 24 and 124 are connected to the movable member 104 and the fixed member 103 in the concave portions 55 and 56 of the fixed member 103 and the movable member 104. It extends through without contact. Upper portions of the drainage screws 24 and 124 are covered with a cover 57. Due to the rotation of the drainage screws 24 and 124, sludge is conveyed through the internal space S between the cover 57 and the recesses 55 and 56 of the fixed member 103 and the movable member 104. At this time, the fixed member 103 and the movable member 104 The filtrate flows down through the filtrate discharge gap therebetween, and cake sludge having a reduced water content is discharged from the outlet of the internal space S. The other basic configuration of this solid-liquid separator is described in detail in Japanese Patent Nos. 3638597 and 4036383.

  Here, the plurality of movable members 104 shown in FIG. 8 are connected by a connecting rod 152, and the arm portion 133 is formed on the main body portion 132 of some of the movable members 104A among the plurality of movable members 104. As in the case of the solid-liquid separator of the previous embodiment, a driven roller 140, which is an example of a member to be pressed, is detachably attached to the arm portion 133. Further, a cam 143 is fixed to a shaft 137 that is rotationally driven by a motor (not shown in FIG. 8), and the driven roller 140 and the movable member 104A are moved to an arrow by rotating the shaft 137 and the cam 143 by the motor. It reciprocates in the E and F directions, whereby all the movable members 104 reciprocate. As a result, a problem that the solid content of sludge is clogged in the filtrate discharge gap between the fixed member 103 and the movable member 104 is prevented. Also in this case, the driven roller 140 can be easily replaced.

  In the solid-liquid separation apparatus described above, the member to be pressed is constituted by the driven rollers 40 and 140, and the driving means is constituted by the cams 43 and 143 fixed to the shafts 37 and 137. It is also possible to employ the pressurized member and the driving means in the form. For example, a driving means described in Japanese Patent No. 4036383 and a pressed member including a pressed plate can be used. In this case, for example, a plurality of movable members 4 and 104 arranged as shown in FIG. 1 or FIG. 8 are connected by connecting means including connecting rods 52 and 152, and the plurality of movable members 4 and 104 are connected. As shown in FIG. 9, the arm portion 233 is integrally connected to the main body portions 32 and 132 of some of the movable members 4 </ b> A and 104 </ b> A, and the rectangular hole 58 formed in the arm portion 233 has a small size. A member to be pressed including a pressed plate 240 is detachably fitted. A drive screw 60 extends through a hole 59 made of a long hole formed in the pressed plate 240, and the drive screw 60 is rotationally driven by a motor (not shown). As a result, the plate to be pressurized 240 is pressurized, and all the movable members reciprocate in the directions of arrows E and F, thereby preventing a problem that the sludge solids are clogged in the filtrate discharge gap between the movable member and the fixed member. . When the wear of the pressurized plate 240 has progressed, the pressurized plate 240 is removed from the rectangular hole 58 and a new pressurized plate is fitted into the rectangular hole 58. Also in this case, since the number of pressed plates 240 is small, the replacement work can be easily performed. The basic configuration of the solid-liquid separator shown in FIG. 9 is the same as that of the solid-liquid separator shown in FIGS. That is, at least one drainage screw is connected to the plurality of fixed members 3, 103 and the movable members 4, 104 arranged between the adjacent fixed members 3, 103. The filtrate passes through the filtrate without being in contact therewith, and the filtrate is discharged through the filtrate discharge gap while conveying the object to be processed by the rotation of the liquid removal screw.

  As described above, in the solid-liquid separation apparatus shown in FIG. 9, the driving means is constituted by the drive screw 60 that is rotationally driven, and the member to be pressed can be attached to and detached from some of the movable members 4A and 104A. The drive plate 60 is constituted by the pressurized plate 240 fitted thereto, and extends through a hole 59 formed in the pressurize plate 240, and the pressurized plate 240 is moved by the rotation of the drive screw 60. It is comprised so that it may reciprocate with. Also in this case, if at least a portion of the drive screw 60 that contacts the pressed plate 240 is made of a material that has higher wear resistance than the pressed member 240, the pressed plate 240 is replaced. Only the drive screw 60 can be used for a long time.

3,103 fixed member 4,104, movable member 24,124,224 draining screw 37 shaft 40,140 driven roller 43,143 cam 47 motor 59 hole 60 drive screw 240 pressure plate

Claims (5)

A plurality of fixed members, a movable member disposed between adjacent fixed members, a liquid removal screw that extends through the movable member and the fixed member without contacting the movable member and the fixed member, and a plurality of A pressurized member detachably attached to a part of the movable members, a driving means for driving the pressurized member so that the pressurized member reciprocates, and the applied member A solid-liquid separator comprising a movable member to which a pressure member is attached and a connecting means for connecting the movable member so that the movable member to which the member to be pressed is not attached reciprocates together. The driving means is constituted by a cam, the pressurized member is constituted by a driven roller rotatably supported by the movable member, and the cam pressurizes the driven roller while being in contact with the driven roller, and the driven member is driven. The solid-liquid separator according to claim 1, wherein the roller and the movable member are reciprocated. The solid-liquid separator according to claim 2, wherein the cam is fixed to a shaft that is rotationally driven by a motor, and is rotationally driven together with the shaft by the motor. 4. The solid-liquid separator according to claim 2, wherein the cam is made of a material having higher wear resistance than the driven roller. The drive means is constituted by a rotationally driven drive screw, the pressurized member is constituted by a pressurized plate detachably fitted to the movable member, and the driven screw is formed on the pressurized plate. A portion of the drive screw that contacts the plate to be pressurized is configured to reciprocate together with the movable member by rotation of the drive screw. The solid-liquid separation device according to claim 1, wherein the solid-liquid separation device is made of a material having higher wear resistance.

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