JP3904582B2 - Solid-liquid separator - Google Patents

Description

  The present invention includes a plurality of fixed rings that are spaced apart from each other by a spacer, a movable ring that is disposed between adjacent fixed rings, a plurality of connecting members that connect the plurality of fixed rings, The present invention relates to a solid-liquid separation device including a fixed ring and a screw extending inside the movable ring, and a driving device that rotationally drives the screw, wherein an inner diameter of the movable ring is set smaller than an outer diameter of the screw.

  Processing objects containing liquids, for example, waste tofu, food processing wastewater, organic sewage such as wastewater treated or wastewater discharged from pig farms, cutting oil containing cutting waste, plating waste liquid, ink waste liquid, pigment waste liquid, paint In order to separate liquid from inorganic sludge such as waste liquid, or processing objects such as vegetable scraps and fruit peels, food residues, okara, etc., it has been conventionally known to use a solid-liquid separation device of the above type ( For example, see Patent Document 1). According to this type of solid-liquid separation device, the object to be processed that has flowed from the inlet opening on one end side in the axial direction of the cylindrical body formed by the plurality of fixed rings and the plurality of movable rings is formed into a cylindrical shape by a rotating screw. Move toward the outlet opening at the other end in the axial direction of the body, and discharge the liquid separated from the processing object moving in the cylindrical body out of the cylindrical body through a micro gap between the fixed ring and the movable ring, The object to be processed with the reduced liquid content can be discharged from the outlet opening on the other axial end side of the cylindrical body.

  At that time, since the inner diameter of the movable ring is set to be smaller than the outer diameter of the screw, the screw pushes the movable ring in the radial direction by its rotation, and positively moves the movable ring with respect to the fixed ring. Can exercise. For this reason, it is possible to efficiently discharge the solid matter that has entered the minute gap between the fixed ring and the movable ring without providing a dedicated driving device for driving the movable ring, and to prevent clogging of the minute gap. Can do.

  By the way, in this type of solid-liquid separation device, the inner peripheral surface of the movable ring is scraped over time, so that it is necessary to replace the movable ring with a new one as necessary. An example of a conventional movable ring replacement operation is as follows.

  First, the drive device is separated from the shaft portion of the screw, and the drive device is placed on the floor surface. The screw is then extracted from the cylinder and the screw is placed on the floor. Subsequently, the cylindrical body is removed from the support frame, and the cylindrical body is lifted and placed on the floor surface. Further, the connecting member is pulled out in the axial direction to remove the connecting member from the fixing ring. In this way, there is no need to constrain the movable ring, so that each movable ring can be taken out from between the fixed rings. A new movable ring can be assembled by an operation reverse to that described above to assemble a solid-liquid separator.

  After extracting the screw from the cylindrical body, the cylindrical body was removed from the support frame, placed on the floor surface, and then the connecting member was pulled out under the cylindrical body assembled to the support frame. Since, for example, a filtrate receiving member or a service tank containing a processing object is disposed, when the connecting member is pulled out from the cylindrical body that is still attached to the support frame, the spacer becomes the filtrate receiving member. It will fall into the service tank. If the tubular member is placed on the floor surface and then the connecting member is removed, the spacer falls on the floor surface, so that it can be easily picked up.

  However, since the cylindrical body having a large number of movable rings and fixed rings is very heavy, the cylindrical body is removed from the support frame and carried on the floor surface, and conversely, this is carried from the floor surface to the support frame for assembly. Requires a lot of effort. If the cylindrical body becomes large, it becomes difficult to carry it by human power alone, and a hoist such as a hoist must be used.

JP-A-5-228695

  An object of the present invention is to provide a solid-liquid separation device of the type described at the beginning, which allows a movable ring to be replaced more easily than before.

  In order to achieve the above object, according to the present invention, in the solid-liquid separator of the type described at the beginning, the screw is detachably connected to the drive device, and at least one connecting member is adjacent to the drive device. A first position where the movable ring can be prevented from detaching from between the fixed rings, and a state where each movable ring is removed from between the adjacent fixed rings in a state where the screw is extracted from the inside of the fixed ring and the movable ring. The connecting member is arranged so as to be movable between the first position and the second position, and the connecting member moves between the first position and the second position without being extracted in the axial direction. In addition, a solid-liquid separator characterized in that a guide for guiding the connecting member is provided (claim 1).

  Further, in the solid-liquid separation device according to claim 1, at least one connecting member is movable between the first position and the second position together with a spacer attached to the connecting member. (Claim 2).

  Further, in the solid-liquid separation device according to claim 2, the spacer attached to the connecting member movable between the first position and the second position has the connecting member connected to the first position. In addition to being in the second position, when the connecting member is guided by the guide and moves between the first position and the second position, it does not come off between adjacent fixing rings. It is advantageous if it is formed so that it can be maintained.

  In the solid-liquid separator according to any one of claims 1 to 3, it is advantageous that the guide is provided on at least one fixing ring (claim 4).

  Further, in the solid-liquid separation device according to claim 4, the connecting member movable between the first position and the second position is movable in a long hole formed in the at least one fixing ring. It is advantageous that the guide is formed by the long hole.

  Furthermore, in the solid-liquid separator according to claim 4, when the connecting member movable between the first position and the second position occupies the first position, the connecting member is When the fitting member is engaged with the first recess formed in one fixing ring and the connecting member occupies the second position, the connecting member is inserted into the second recess formed in the at least one fixing ring. It is advantageous if the guide is formed by an outer peripheral portion of a fixing ring between the first recess and the second recess (Claim 6).

  Further, in the solid-liquid separation device according to any one of claims 1 to 3, it is advantageous that a support member for supporting the connecting member is provided, and the guide is provided on at least one support member ( Claim 7).

  Furthermore, in the solid-liquid separation device according to claim 7, the connecting member movable between the first position and the second position is movable in a long hole formed in the at least one support member. It is advantageous that the guide is formed by the long hole.

  Further, in the solid-liquid separator according to claim 7, when the connecting member movable between the first position and the second position occupies the first position, the connecting member When the first recess is formed in one support member and the connection member occupies the second position, the connection member is in the second recess formed in the at least one support member. It is advantageous if the guide is formed by a support member outer peripheral portion between the first concave portion and the second concave portion.

  Furthermore, in the solid-liquid separator according to any one of claims 1 to 9, the connecting member is constituted by a stay bolt, and a nut is screwed onto a male screw formed on the stay bolt to tighten the nut. Fixing the plurality of fixing rings by loosening a nut screwed to a stay bolt movable between the first position and the second position, so that the stay bolt moves along the guide. It is advantageous if configured to allow (claim 10).

  According to the present invention, the movable ring can be taken out from between the adjacent fixed rings by moving the connecting member to the second position, so that the movable ring can be exchanged more easily than before.

  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 showing an example of a solid-liquid separator. Various processing objects can be solid-liquid separated by this solid-liquid separator, but here, a case where a sludge containing a large amount of moisture is dehydrated will be described.

  The solid-liquid separation device shown here has an inlet member 1, an outlet member 2, and a cylindrical body 3 disposed between them, and the inlet member 1 is formed in a rectangular box shape with an open top. And the inflow port 4 into which sludge flows is comprised by the upper opening. Reference numeral 7 denotes a bottom wall of the inlet member 1. An opening 6 is formed in the side wall 5 of the inlet member 1 on the side facing the cylindrical body 3, and a cross section is formed in a rectangular shape on the other side wall 8 facing the side wall 5 of the inlet member 1. One side wall 10 of the motor support member 9 is fixed by bolts and nuts, and a motor 12 with a speed reducer is fixed to the other side wall 11 of the motor support member 9.

  Both side walls 5 and 8 of the inlet member 1 extend downward, and lower ends thereof are detachably fixed to the stays 13 and 14 of the support frame by bolts and nuts (not shown). 11 also extends downward, and its lower end is detachably fixed to the stay 14 of the support frame by bolts and nuts (not shown).

  The outlet member 2 has an opening at the top and bottom and a rectangular horizontal cross section. The side wall 19 of the outlet member 2 on the side facing the cylindrical body 3 and the side wall of the outlet member 2 facing the outlet member 2 20 is formed with openings 22 and 23 each having a diameter larger than the outer diameter of a screw 21 described later. The side walls 19 and 20 extend downward, and their lower ends are detachably fixed to the stays 52 and 53 of the support frame by bolts and nuts (not shown). A bearing plate 18 is disposed in the opening 23 formed in the side wall 20, and the bearing plate 18 is detachably fixed to the side wall 20 by bolts 24 and nuts 25. The lower opening of the outlet member 2 constitutes a discharge port 26 through which the dewatered sludge is discharged.

  On the other hand, the cylindrical body 3 is movable between a plurality of fixed rings 28 spaced apart from each other in the axial direction by small ring spacers 38 and 39 and a fixed ring 28 adjacent in the axial direction. The ring 29 is constituted. FIG. 2 is a perspective view showing the appearance of one fixed ring 28, one movable ring 29, and spacers 38 and 39. The plurality of fixing rings 28 are arranged concentrically as shown in FIGS. 1, 3, and 4, and the above-described spacers 38 and 39 are arranged between the fixing rings 28 adjacent in the axial direction. As shown in FIG. 1, the cylindrical body 3 is disposed so as to be inclined so that the outlet member 2 side becomes higher.

  In the illustrated solid-liquid separation device, as shown in FIGS. 2 to 4, each fixing ring 28 is formed with three mounting holes 32 arranged at predetermined intervals in the circumferential direction, A long hole 33 extending in the circumferential direction of the fixing ring 28 is formed. The three attachment holes 32 formed in the plurality of fixing rings 28 are concentrically positioned, and the long holes 33 formed in the plurality of fixing rings 28 are also aligned in a straight line in the axial direction of the cylindrical body 3. Located in a state.

  As shown in FIGS. 1, 3, and 4, each attachment hole 32 formed in each fixing ring 28 and the center hole of the spacer 39 disposed between the fixing rings 28 adjacent in the axial direction are connected to each other. Stay bolts 34, which are examples of members, extend through each of them, and each stay bolt 34 is formed on the side wall 5 of the inlet member 1 and the side wall 19 of the outlet member 2 as shown in FIG. The nuts 36 and 36A are respectively screwed and tightened to the male screws formed at the respective ends of the mounting holes 56 and 57.

  On the other hand, the elongated holes 33 formed in each fixing ring 28 and the central hole of the spacer 38 disposed between the fixing rings 28 adjacent in the axial direction also have a connecting member as shown in FIGS. An example stay bolt 35 extends therethrough. As shown in FIG. 1, the stay bolt 35 penetrates through attachment holes 54 and 55 formed in the side wall 5 of the inlet member 1 and the side wall 19 of the outlet member 2, and is formed at each end of the stay bolt 35. Nuts 37 and 37A are respectively screwed and tightened to the male threads thus formed. In the solid-liquid separation device of this example, the plurality of stay bolts 34, 35 extend in the axial direction of the fixing ring 28 and are positioned substantially parallel to each other. In FIG. 1, illustration of some of the stay bolts and spacers is omitted for easy understanding of the drawing.

  As described above, the plurality of fixing rings 28 are integrally fixedly connected by the stay bolts 34 and 35 and the nuts 36, 36 </ b> A, 37, and 37 </ b> A, and are fixed to the inlet member 1 and the outlet member 2. It is also possible to assemble the fixing rings, which are spaced from each other by spacers, so that they can be slightly moved. In any case, the stay bolts 34 and 35, which are examples of the connecting members, extend through the plurality of fixing rings 28 and serve to connect the plurality of fixing rings 28. An elongated member other than the stay bolt, for example, a connecting member made of a connecting rod or the like can also be used. A plurality of such connecting members are provided.

  In addition, the inlet member 1 and the outlet member 2 constitute an example of a support member that supports stay bolts 34 and 35 that are examples of connecting members. The inlet member 1 and the outlet member 2 support end portions of the stay bolts 34 and 35 in the longitudinal direction, but support members that support intermediate portions of the stay bolts 34 and 35 in the longitudinal direction may be provided. Various types of support members other than the inlet member 1 and the outlet member 2 may be employed.

  As shown in FIG. 4, the thickness T of each movable ring 29 disposed between each fixed ring 28 is set to be smaller than the gap width G between the fixed rings. A minute gap g of, for example, about 0.1 to 1 mm is formed between the end faces of the movable ring 29 that face each other. As will be described later, the minute gap g allows moisture separated from the sludge, that is, the filtrate to pass therethrough. The thickness T of the movable ring 29 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 ring 28 is set to about 1.5 mm to 3 mm, for example.

On the other hand, the outer diameter D ₁ of the respective movable ring 29 is smaller than the diameter D ₂ of the circle CC (FIG. 2) formed by the inner surface of the four spacers 38, 39 located around them, yet the fixing ring It is set larger than the inner diameter D ₃ of 28. With this configuration, each movable ring 29 is movable in the radial direction without detaching from between each fixed ring 28. As described above, the plurality of stay bolts 34 and 35 are provided so that the movable ring 29 located inside the spacers 39 and 38 fitted to the respective stay bolts 34 and 35 does not fall downward, and preferably 3 More than the number of stay bolts are provided. In the solid-liquid separation device of this example, four stay bolts 34 and 35 are used. As can be seen from FIG. 3, these stay bolts 34 and 35 are arranged at equal intervals in the circumferential direction of the fixing ring 28. ing. As described above, the plurality of connecting members are arranged so as to prevent the movable ring 29 from being separated from between the adjacent fixed rings 28.

  A screw 21 extending in the axial direction of the rings 28 and 29 is disposed inside the plurality of fixed rings 28 and the plurality of movable rings 29. The screw 21 has a shaft portion 41 and a spiral integral therewith. The blade portion 42 has a shape. As shown in FIG. 1, the screw 21 extends through the openings 6, 22, and 23 formed in the side wall 5 of the inlet member 1 and the side walls 19 and 20 of the outlet member 2.

  As shown in FIG. 1, the bearing plate 18 has a bearing cup 44 in which a bearing 43 is accommodated, and one end portion of the shaft portion 41 of the screw 21 described above is inserted into the bearing cup 44. The bearing plate 18 is rotatably supported via 43.

  On the other hand, the output shaft 45 of the motor 12 shown in FIG. 1 extends through the side walls 11 and 10 of the motor support member 9 and the side wall 8 of the inlet member 1 and is rotatably supported by the side wall 10 via a bearing. ing. As shown in FIG. 5, the distal end portion of the output shaft 45 is hollow inside, and the engagement piece 50 is fixedly disposed at the center of the hollow portion 49. Further, an engagement groove 51 is formed at the other end of the shaft portion 41 of the screw 21, and the end portion of the shaft portion 41 is inserted into the hollow portion 49 of the output shaft 45 as shown in FIG. An engagement groove 51 formed in 41 is detachably engaged with an engagement piece 51 provided on the output shaft 45.

  When the motor 12 operates and the output shaft 45 rotates, the rotation is transmitted to the screw 21 via the engaging piece 50 and the engaging groove 51 engaged with each other, and the screw 21 rotates around its central axis. To do. Thus, in the solid-liquid separation device of this example, the motor 12 with a speed reducer and the output shaft 45 constitute a drive device that rotationally drives the screw 21, and the engagement piece 50 and the engagement groove described above. 51, the screw 21 is detachably connected to the drive device. The engaging piece 50 and the engaging groove 51 constitute a connecting means for detachably connecting the screw 21 to the drive device, but other appropriate forms of connecting means can also be used. Similarly, an appropriate drive device other than the drive device configured by the motor 12 and the output shaft 45 can be employed.

  Next, the operation of the solid-liquid separator of this example will be described.

  Sludge in a service tank (not shown) located below the cylindrical body 3 is supplied to a flocking device (not shown), and the flocculant is mixed and stirred with sludge containing a large amount of water. As a result, the sludge is flocked. Flocked sludge (not shown in the figure) flows into the inlet member 1 of the solid-liquid separator as indicated by an arrow A in FIG. The moisture content of such sludge is, for example, about 99% by weight. At this time, since the screw 21 is rotationally driven by the motor 12, the sludge that has flowed into the inlet member 1 passes through the opening 6 formed in the side wall 5 of the inlet member 1, as indicated by the arrow B, and the fixing ring. 28 and the movable ring 29, that is, the inner space of the cylindrical body 3 flows from the inlet opening 3 </ b> A on one end side in the axial direction.

  The sludge that has flowed into the cylindrical body 3 as described above is conveyed toward the outlet opening 3B on the other axial end side of the cylindrical body 3 by the screw 21 that is rotationally driven by the driving device. At this time, the water separated from the sludge, that is, the filtrate is discharged out of the cylindrical body through the minute gap g (FIG. 4) between each fixed ring 28 and the movable ring 29. The discharged filtrate is received by the filtrate receiving member 40 fixed to the stays 13 and 52, and then flows down through the filtrate discharge pipe 46. Since this filtrate still contains some solids, the filtrate is treated again with other sludge and then supplied to a solid-liquid separator for dehydration.

Here, as shown in FIG. 4, the outer diameter D ₄ of the screw 21 is set to be slightly smaller than the inner diameter D ₃ of the fixed ring 28 so that its rotation is not hindered. It is set larger than the inner diameter D ₅ of 29. The inner diameter D ₅ of the movable ring 29 is set smaller than the outer diameter D _{4 of the} screw 21. For this reason, by the rotation of the screw 21, each movable ring 29 is pushed by receiving an external force from the screw 21 and positively moves relative to the fixed ring 28. In this manner, the solid matter that has entered the minute gap g can be positively discharged without providing a dedicated driving means for driving the movable ring 29, and the cleaning efficiency for the gap g can be enhanced.

  As described above, the moisture content of the sludge in the cylindrical body 3 is lowered, and the sludge having a reduced water content is discharged from the outlet opening 3B on the other axial end side of the cylindrical body 3. As shown by an arrow D in FIG. 1, the sludge discharged from the cylindrical body 3 moves into the outlet member 2 through the opening 22 of the outlet member 2, and falls downward through the outlet 26 below.

  The water content of the sludge after the dehydration treatment as described above is, for example, about 80 to 85% by weight. As shown in FIG. 1, a back pressure plate 47 is fixed to the shaft portion 41 so as to face the opening 22 formed on one side wall of the outlet member 2, and is thereby added to the sludge in the cylindrical body 3. The pressure can be increased.

  Since the inner peripheral surface of the movable plate 29 is worn while the above-described solid-liquid separation operation is repeated, it is necessary to replace the worn movable plate with a new movable plate at an appropriate time. This replacement operation can be performed very simply as illustrated below.

  First, in a state where the operation of the motor 12 is stopped, the bolt 24 and the nut 25 shown in FIG. 1 are removed, the bearing plate 48 is pulled in the direction of arrow E, and the bearing cup 44 is moved to one of the shaft portions 41 of the screw 21. Detach from the edge. As a result, there is no longer any restriction on one end side of the screw 21. Therefore, when the screw 21 is pulled in the direction indicated by the arrow E in FIG. 1, the other end of the shaft portion 41 of the screw 21 as shown in FIG. The end portion is disengaged from the hollow portion 49 of the output shaft 45. Therefore, if the screw 21 is pulled in the direction of arrow E as it is, the screw 21 can be extracted from the inside of the fixed ring 28 and the movable ring 29.

  As described above, after the screw 21 is extracted from the inside of the fixed ring 28 and the movable ring 29, it is screwed to the stay bolt 35 fitted in the long hole 33 among the four stay bolts 34 and 35. The nuts 37 and 37A are loosened, and the stay bolts 35 are moved along the long holes 33 formed in each fixing ring 28 as shown by an arrow F in FIG. When the solid-liquid separator is normally used, the stay bolt 35 occupies the first position in contact with one end 60 of the long hole 33 as can be seen from FIG. The bolt 35 is moved to the second position in contact with the other end 61 of the long hole 33 while being guided by each of the long holes 33.

  As described above, the stay bolt 35 is fitted in the mounting hole 54 formed in the inlet member 1 and the mounting hole 55 formed in the outlet member 2 shown in FIG. 54 and 55 are formed in a form that does not hinder the movement of the stay bolt 35 as described above, for example, a long hole shape.

  FIG. 6 shows a state when the stay bolt 35 occupies the first position, and FIG. 7 shows a state when the stay bolt 35 occupies the second position. In this way, when the stay bolt 35 is moved while being guided by the long hole 33, the nuts 36 and 36A screwed to the other stay bolts 34 so that the stay bolt 35 can be smoothly moved with a small force. It is preferable to loosen a little.

  Here, when the stay bolt 35 is moved from the first position to the second position, the spacer 38 fitted to the stay bolt 35 is also moved together with the stay bolt 35. Moreover, not only when the stay bolt 35 is in the first and second positions, but also when the stay bolt 35 is moved from the first position to the second position while being guided by the elongated hole 33, The spacer 38 does not come off between the fixing rings 28 adjacent in the axial direction.

When the stay bolt 35 is in the first position shown in FIG. 6, the distance L 1 between the spacers 38 and 39 fitted to the stay bolts 34 and 35 adjacent to each other in the circumferential direction of the fixing ring 28. L2, L3, L4 are all smaller than the outer diameter _{D 1} of the movable ring 29. For this reason, as described above, the movable ring 29 is prevented from separating from between the fixed rings 28 adjacent in the axial direction.

In FIG. 6 and FIG. 7, the stay bolt located on the left side of the stay bolt 35 is marked with a reference numeral 34A. However, when the stay bolt 35 moves to the second position shown in FIG. The distance L1 between the spacer 38 fitted to 35 and the spacer 39 fitted to the stay bolt 34A located on the left side thereof is larger than the outer diameter D ₁ (FIG. 6) of the movable ring 29. At this time, since the screw 21 is extracted from the inside of the fixed ring 28 and the movable ring 29 as described above, the movable ring 29 positioned between the fixed rings 28 adjacent in the axial direction is moved to the second position. 7 can be taken out through a gap between the spacer 38 fitted to the stay bolt 35 and the spacer 39 fitted to the stay bolt 34A adjacent to the left as shown by an arrow G in FIG. At this time, since the spacers 38 and 39 remain fitted to the stay bolts 35 and 34, the spacers 38 and 39 do not fall downward.

  After the movable ring 29 is taken out from between the adjacent fixed rings 28, the gap between the spacers 38 and 39 fitted to the stay bolts 35 and 34A, respectively, as shown by the arrow H in FIG. And inserted between the fixing rings 28 adjacent in the axial direction. Next, the stay bolt 35 is moved in the direction indicated by the arrow I in FIG. 7 while being guided by the long hole 33, and is brought to the first position shown in FIG. Also at this time, the spacer 38 moves together with the stay bolt 35. Next, the nuts 37 and 37A screwed to the stay bolt 35 are tightened. When the nuts 36 and 36A are loosened prior to moving the stay bolt 35 from the first position to the second position, the nuts 36 and 36A are also moved after the stay bolt 35 is brought to the first position. tighten. Accordingly, the fixing rings 28 are fixed to each other, and the movable ring 29 inserted between the fixing rings 28 adjacent in the axial direction is prevented from being detached from between the two fixing rings 28. The long hole 33 serves as a guide for guiding the stay bolt when the stay bolt 35 as an example of the connecting member moves between the first position and the second position.

  Subsequently, the screw 21 is inserted into the cylindrical body 3, and the screw 21 and the output shaft 45 are connected by engaging the engaging piece 50 and the engaging groove 51 as shown in FIG. Further, the bearing plate 18 shown in FIG. 1 is fixed to the outlet member 2 by bolts 24 and nuts 25, and one end of the screw 21 is rotatably supported by the bearing 43. In this way, the replacement work of the movable ring 29 is completed.

  As described above, in the solid-liquid separation device of this example, the first position where the stay bolt 35 as an example of the connecting member can prevent the movable ring 29 from being separated from between the adjacent fixed rings 28, and In a state where the screw 21 is extracted from the inside of the fixed ring 28 and the movable ring 29, the movable ring 29 is disposed so as to be movable between the second positions where the movable rings 29 can be extracted from between the adjacent fixed rings 28. In addition, a guide for guiding the stay bolt 35 is provided so that the stay bolt 35 moves between the first position and the second position without being pulled out in the axial direction. In the illustrated example, the guide is constituted by a long hole 33 formed in the plurality of fixing rings 28. With this configuration, when exchanging the movable ring 29, it is not necessary to remove the cylindrical body 3 and the driving device including the motor 12 from the support frame, and the heavy cylindrical body 3 and the driving device are carried to the floor surface or the like. There is no need. For this reason, the movable ring 29 can be exchanged very easily as compared with the prior art.

  In addition, in the solid-liquid separation device of this example, the spacer 38 is attached by being fitted to a connecting member made of the stay bolt 35 movable between the first position and the second position, and the stay bolt 35 is configured to move between a first position and a second position together with a spacer 38 attached to the stay bolt 35. Furthermore, the spacer 38 attached to the connecting member made up of the stay bolt 35 that can move between the first position and the second position is used when the connecting member is in the first position and the second position. In addition, even when the connecting member is guided by the guide made of the long hole 33 and moves between the first position and the second position, it can maintain a state in which it does not come off between the adjacent fixing rings 28. Is formed. When the stay bolt 35 is moved between the first position and the second position, the spacer 38 does not come off between the fixing rings 28 adjacent to each other. Thereby, after inserting the new movable ring 29 between the fixed rings, the work of inserting the spacer 38 attached to the stay bolt 35 between the fixed rings 28 adjacent to each other in the axial direction is unnecessary, and it is easily movable. The replacement work of the ring 29 can be performed.

  In the solid-liquid separation apparatus described above, the one stay bolt 35 is formed in the fixing ring 28 so that only one stay bolt 35 can move between the first position and the second position. Although it fits in 33, it can also be constituted so that a plurality of stay bolts can move between the 1st and 2nd positions.

  In the solid-liquid separator shown in FIGS. 8 and 9, six stay bolts 35A, 35B, 34A, 34B, 34C, 34D are used as connecting members for fixedly connecting the plurality of fixing rings 28. Spacers 38A, 38B, 39A, 39B, 39C, and 39D are fitted to the stay bolts 35A, 35B, 34A, 34B, 34C, and 34D, respectively, and the fixing rings 28 that are adjacent in the axial direction are spaced apart from each other by these spacers. Are arranged. Moreover, two stay bolts 35A and 35B among the plurality of stay bolts are formed in the long holes 33A and 33B formed in each fixing ring 28 and the inlet member and the outlet member not shown in FIG. The fitting hole is slidably fitted.

Normally, the two stay bolts 35A and 35B occupy the first position shown in FIG. 8, and nuts (not shown) screwed to the stay bolts 35A and 35B and the other stay bolts 34A to 34A to 34A. Each fixing ring 28 is fixedly connected by tightening a nut (not shown) screwed to 34D. At this time, the outer diameter _{D 1} of the movable ring 29 disposed between the fixed ring 28 adjacent in the axial direction, the stay bolts 35A adjacent to each other in the circumferential direction of the fixing ring 28, 35B, 34A, 34B, 34C, the 34D Since the distances L1, L2, L3, L4, L5, and L6 between the fitted spacers 38A, 38B, 39A, 39B, 39C, and 39D are larger than each other, the movable ring 29 is a fixed ring adjacent in the axial direction. There is no separation from 28.

In order to replace the movable ring 29, a screw not shown in FIGS. 8 and 9 is extracted from the inside of the cylindrical body 3 composed of the fixed ring 28 and the movable ring 29 in the same manner as described above. The nuts screwed to the stay bolts 35A and 35B are loosened, and the nuts screwed to the other stay bolts 34A to 34D are also loosened as necessary. Next, the stay bolts 35A and 35B are moved in the direction of arrow F while being guided by the elongated holes 33A and 33B, and brought to the second position shown in FIG. Thus, both the stay bolts 35A, spacer 38A fitted to 35B, the distance L1 between the 38B is larger than the outer diameter _{D 1} of the movable ring 29 (FIG. 8), an arrow that movable ring 29 in FIG. 9 As indicated by G, it can be taken out from between adjacent fixing rings 28.

  After the movable ring 29 is taken out between the adjacent fixed rings 28, a new movable ring 29 is inserted between the adjacent fixed rings 28 in the axial direction as indicated by an arrow H in FIG. 9. Next, as indicated by an arrow I in FIG. 9, the stay bolts 35A and 35B are returned to the first position shown in FIG. 8, and the nuts screwed to the stay bolts 35A and 35B and the other stay bolts 34A to 34D. Each fixing ring 28 is fixed by tightening a nut screwed to the fixing ring 28. Subsequently, as in the case of the solid-liquid separator shown in FIGS. 1 to 7, the screw is inserted into the cylindrical body 3, the other end of the screw is connected to the drive device, and then one end of the screw is connected. The part is supported rotatably on the bearing of the bearing plate. The other configurations and operations of the solid-liquid separator shown in FIGS. 8 and 9 are substantially the same as those of the solid-liquid separator shown in FIGS.

  Also in the solid-liquid separator shown in FIGS. 8 and 9, when the stay bolts 35A and 35B are moved between the first position and the second position, the spacers attached to these stay bolts 35A and 35B. 38A and 38B move together with the stay bolts 35A and 35B, and these spacers 38A and 38B do not always come off between the fixed rings adjacent in the axial direction, so that the movable ring can be easily replaced. It can be performed.

  As described above, there may be a plurality of stay bolts that can move between the first position and the second position. In short, at least one connecting member is moved between the first position and the second position. What is necessary is just to comprise so that it can do. However, when the stay bolt is moved from the first position to the second position, the movable ring may be configured not to fall downward through the gap between the stay bolt and the adjacent stay bolt. desirable. The at least one connecting member is moved between the first and second positions so that the movable ring does not fall downward.

  In the specific example described above, the connecting members formed of the stay bolts 35, 35A, 35B that are movable between the first position and the second position are formed in the long holes 33, 33A, A guide is formed by the long holes 33, 33A, 33B. The stay bolts 35, 35A, and 35B that move between the first and second positions are guided by a guide composed of the long holes 33, 33A, and 33B. However, guides other than the long holes may be employed. .

  For example, when a connecting member made up of a stay bolt 35 movable between a first position and a second position occupies the first position as shown in FIG. 10, the stay bolt 35 is fixed to the fixing ring. When the stay bolt 35 occupies the second position as shown in FIG. 11, the stay bolt 35 is fitted into the first recess 160 formed on the fixing ring 28. It is also possible to configure the guide to guide the stay bolt 35 by the outer peripheral portion 133 of the fixing ring 28 between the first concave portion 160 and the second concave portion 161. . When this configuration is adopted and the mounting holes 54 and 55 formed in the inlet member 1 and the outlet member 2 shown in FIG. 1 are also configured like the guides shown in FIGS. 35, together with the spacer 38 attached thereto, can be detached from the fixing ring 28 in the radial direction, but when the stay bolt 35 is moved between the first position and the second position, the stay By keeping the bolt 35 in contact with the outer peripheral portion 133 of the fixing ring 28, the spacer 38 can be prevented from coming off between the adjacent fixing rings 28. 10 and FIG. 11 is the same as the solid-liquid separator shown in FIG. 1 to FIG. 7, and FIG. 10 and FIG. The same reference numerals as those shown in FIGS. 6 and 7 are attached to the same or corresponding parts.

  According to the above-described configuration, there is an advantage that the material cost when manufacturing the fixing ring 28 can be reduced, compared to the case where the guide is configured by the long hole. On the other hand, when the guide is constituted by a long hole, there is an advantage that when the stay bolt moves between the first position and the second position, the stay bolt can be prevented from being separated from the guide made of the long hole.

  In the specific example described above, a guide for guiding at least one connecting member that moves between the first position and the second position is provided in the plurality of fixing rings 28. Even if only the fixing ring 28 is provided, the connecting member that moves between the first position and the second position can be guided by the guide. The guide is provided on at least one fixing ring 28. A connecting member movable between the first position and the second position is movably fitted into an elongated hole formed in at least one fixing ring, and the guide is formed by the elongated hole, When the connecting member movable between the first position and the second position occupies the first position, the connecting member is fitted in a first recess formed in at least one fixing ring, When the connecting member occupies the second position, the connecting member is fitted into the second recess formed in the at least one fixing ring, and the guide is interposed between the first recess and the second recess. It is formed by the outer periphery of the fixing ring.

  In addition, a guide for guiding the connecting member that moves between the first position and the second position can be provided on a member other than the fixing ring. For example, the inlet member 1 and the outlet member 2 shown in FIG. 1 constitute an example of a support member that supports a connecting member made of a stay bolt, and the solid-liquid separator has such a support member. In some cases, the at least one support member can be provided with the aforementioned guide.

  12 to 17 are views corresponding to partial cross-sectional views when the inlet member 1 shown in FIG. 1 is viewed from the right side in FIG. First, as shown in FIGS. 12 and 13, the attachment holes 54 formed in the side wall 5 of the inlet member 1 which is an example of a support member that supports the connecting member are replaced with the elongated holes 33 shown in FIGS. 6 and 7. A connecting member formed of a stay bolt 35 formed as a similar long hole and fitted in the mounting hole 54 is movable between the first position shown in FIG. 12 and the second position shown in FIG. To support. The stay bolt 34 that is not movable between the first position and the second position passes through a mounting hole 56 formed in the side wall 5. As described above, the plurality of fixing rings are fixed as shown in FIG. 1 by tightening the nuts 37 and 36 screwed to the stay bolts 35 and 34.

  On the other hand, as shown in FIGS. 14 and 15, a long hole similar to the long holes 33 </ b> A and 33 </ b> B shown in FIGS. Mounting holes 54A and 54B are formed, and stay bolts 35A and 35B are fitted into the mounting holes 54A and 54B, respectively. In the case of this example, the four stay bolts 34A, 34B, 34C, 34D that are not movable between the first position and the second position pass through the attachment holes 56 formed in the side wall 5, respectively. Nuts 37 and 36 are screwed and tightened to the respective stay bolts 35A, 35B and 34A to 34D, whereby the fixing ring is fixed as shown in FIG.

  In the solid-liquid separator shown in FIGS. 12 to 15, the stay bolts 35; 35A, 35B normally occupy the first position shown in FIGS. In order to replace the movable ring, the screw not shown in FIGS. 12 to 15 is extracted from the opening 6 formed in the side wall 5 and the cylindrical body, as in the example shown in FIGS. The nut screwed to each stay bolt is loosened, and then the stay bolt 35; 35A, 35B is brought to the second position shown in FIGS. Thereby, a movable ring can be taken out from between adjacent fixed rings. Subsequently, a new movable ring is inserted between the adjacent fixed rings, and then the stay bolts 35; 35A, 35B are returned to the first position shown in FIGS. 12 and 14, and the nut is tightened. Thus, when the stay bolts 35; 35A, 35B move between the first position and the second position, the stay bolts are guided by the mounting holes 54, 54A, 54B made of long holes.

  Each structure mentioned above is applicable also to the outlet member 2 which is a support member which supports a connection member. In FIG. 12 to FIG. 15, reference numerals in parentheses are assigned to the configurations shown in these drawings when applied to the outlet member 2. The guide for guiding the stay bolt 35 may be provided on both the inlet member 1 and the outlet member 2, or may be provided on only one support member. The guide is provided on at least one support member that supports the connecting member. What is necessary is just to provide. A connecting member movable between the first position and the second position is movably fitted in a long hole formed in at least one supporting member that supports the connecting member, and a guide is formed by the long hole. It is done.

  Also, as shown in FIGS. 16 and 17, the first recess 160 and the second recess 161 shown in FIGS. 10 and 11 are formed on the side wall 5 of the inlet member 1 which is an example of a support member that supports the connecting member. The first and second recesses 54A and 54B formed in the same manner as described above are formed, and the outer peripheral portion 233 of the side wall 5 between these recesses moves between the first recess 154A and the second recess 154B. A guide for guiding the stay bolt 35 can also be configured. Other configurations are the same as those of the solid-liquid separator shown in FIGS. Also, in FIGS. 16 and 17, reference numerals in the case where the configuration shown here is applied to the outlet member 2 are given in parentheses. The guides shown in FIGS. 16 and 17 may be formed on at least one support member.

  According to the above configuration, when the connecting member movable between the first position and the second position occupies the first position, the connecting member is formed on at least one support member that supports the connecting member. When the connecting member occupies the second position, the connecting member occupies the second recessed portion 154B (155B) formed in the at least one support member. To fit. Moreover, the guide is formed by the support member outer peripheral portion 233 between the first concave portion 154A (155A) and the second concave portion 154B (155B).

  Other configurations of the solid-liquid separator shown in FIGS. 12 to 17 are the same as the configurations of the solid-liquid separator described above. In each example shown in FIGS. 12 to 17, the guide is provided on the support member composed of the inlet member 1 and the outlet member 2, but the guide may be provided on another type of support member.

  As described above, each of the at least one connecting member has a first position where the movable ring can be prevented from being separated from between the adjacent fixed rings, and the screw is extracted from the fixed ring and the movable ring. A guide for guiding the connecting member may be provided on at least one supporting member for supporting the connecting member so that the movable ring can be moved between the second positions where the movable ring can be taken out from between the adjacent fixed rings. It can be done. Even in the case of adopting this configuration, at least one connecting member is configured to move between the first position and the second position together with the spacer attached to the connecting member, and the first position The spacer attached to the connecting member movable between the second positions is not only when the connecting member is in the first position and the second position, but also when the connecting member is guided by the guide, Even when moving between the first position and the second position, it is preferable to be formed so as to maintain a state where it does not come off between adjacent fixing rings.

  Also, when a guide is provided on the support member that supports the connecting member, the guide shown in FIGS. 1 to 11 is formed on the fixing ring 28, and the stay bolt that moves between the first position and the second position is provided. You may comprise so that it may guide also with the guide provided in the fixing ring 28 side. Alternatively, when the guide is provided on the support member, as shown in FIGS. 18 and 19, when the stay bolt 35 is in the first position, only the recess 160 into which the stay bolt 35 is fitted is fixed. You may form in the ring 28. FIG. Similarly, when the plurality of stay bolts are configured to be movable between the first position and the second position, the recesses that fit when the respective stay bolts are in the first position are similarly formed in the fixing ring 28. Can be formed. Moreover, since the other structure of the cylindrical part 3 of the solid-liquid separator shown in FIG.18 and FIG.19 is not different from what was shown in FIG.10 and FIG.11, it respond | corresponds to each part of FIG.10 and FIG.11. The same reference numerals as those in FIGS. 10 and 11 are given to the portions.

  Further, as shown in FIGS. 20 and 21, none of the stay bolts 34, 35 penetrates the fixing ring 28, and a part of the spacers 39, 38 attached to the stay bolts 34, 35 are adjacent to each other. Each fixing ring 28 can also be fixed by being configured so as to be sandwiched between the fixing rings 28, screwing nuts to the respective stay bolts 34, 35, and tightening the nuts. Also in this case, by loosening the nut, the stay bolt 35 can be moved between the first position shown in FIG. 20 and the second position shown in FIG. 21, and the stay bolt 35 is moved to the second position. The movable ring 29 can be taken out between the adjacent fixed rings 28 and then a new movable ring can be inserted. This configuration can be applied not only when the guide for guiding the stay bolt 35 is provided on the support member, but also when the stay bolt 35 is configured to be guided by the outer peripheral portion 133 of the fixing ring 28.

  In the specific example described above, a stay bolt is used as a connecting member for connecting the fixing ring 28, and a nut is screwed onto a male screw formed at each end of the stay bolt, but a head is attached to one end. It is also possible to use a stay bolt in which a male screw is formed at the other end and a nut is screwed onto the male screw so that the plurality of fixing rings 28 are fixedly connected. As described above, when the connecting member is constituted by the stay bolt, the plurality of fixing rings are fixed by screwing the nut onto the male screw formed on the stay bolt and tightening the nut, The stay bolt is configured to be allowed to move along the guide by loosening a nut screwed to a stay bolt movable between the second positions. According to this configuration, the fixing ring can be connected or the stay bolt can be moved between the first and second positions with a simple operation.

  Further, in each of the specific examples described above, a spacer is fitted to each stay bolt, and the spacer is attached to the stay bolt so as to be movable in the axial direction. However, as shown in FIGS. When the stay bolt 35 is configured to be detachable from the fixing ring 28 in the radial direction, the spacer 38 is, for example, an adhesive with respect to the stay bolt 35 movable between the first and second positions. Alternatively, the stay bolt 35 and the spacer 38 can be configured to be integrally fixed by welding or the like, or by cutting the material, or by casting. Furthermore, when the stay bolt 35 and the spacer 38 are made of resin, they can be manufactured as an integral molded product by a molding die. When the stay bolt 35 and all the spacers 38 are integrally formed, the stay bolt 35 and the spacer 38 are configured as one part. Thus, the spacer 38 can be attached to the stay bolt 35 in various manners. Moreover, the spacers 38 and 39 can be configured in various forms other than the ring shape.

  In addition, since the spacer fitted to the stay bolt that is not movable between the first position and the second position does not need to move together with the stay bolt, as shown in FIG. The fixing ring 28 and the spacer 39 may be formed as one part by integrally forming the fixing ring 28 on one of the two fixing rings adjacent to the spacer 39.

  In order to integrally form the fixing ring and the spacer, for example, when the fixing ring 28 and the spacer are both made of metal, they can be integrated by welding or can be integrally formed by casting. Alternatively, the fixing ring 28 and the spacer integrated with each other can be manufactured by cutting the material. Further, when both the fixing ring 28 and the spacer are made of resin, they can be manufactured as an integral molded product by a molding die.

  Further, as shown in FIGS. 23 and 24, without the spacer being attached to the stay bolt 35 that can move between the first position and the second position, the stay bolt 35 has the first position shown in FIG. The spacer can be configured not to move together with the stay bolt 35 when moving the second position shown in FIG. The other stay bolts 34 can also be fixed to one of the adjacent fixing rings without passing through the spacer 39.

In the solid-liquid separator shown in FIGS. 23 and 24, when the stay bolt 35 occupies the first position shown in FIG. 23, the stay bolt 35 is fitted to the adjacent stay bolt 34A. distance L1 between the spacers 39 is set smaller than the outer diameter D ₁ of the movable ring 29. As a result, the movable ring 29 is not detached from between the adjacent fixed rings 28. Further, when the stay bolt 35 occupies the second position shown in FIG. 24, the distance L1 between the stay bolt 35 and the spacer 39 fitted to the adjacent stay bolt 34A is the distance of the movable ring 29. It becomes larger than the outer diameter D ₁ (FIG. 23), and thus the movable ring 29 can be taken out between the adjacent fixed rings 28.

  Other configurations of the solid-liquid separation device shown in FIGS. 23 and 24 are the same as those shown in FIGS. 6 and 7, and therefore, portions corresponding to the respective portions shown in FIGS. 6 and the same reference numerals as those in FIG.

  In each of the specific examples described above, one movable ring 29 is disposed between the fixed rings 28 adjacent in the axial direction, but a plurality of movable rings 29 are provided between the fixed rings 28 adjacent in the axial direction. Of course, it may be arranged. At least one movable ring is disposed between two adjacent fixed rings. Similarly, the screw 21 of the illustrated solid-liquid separator has one blade portion 42 extending in a spiral shape, but it is natural that a screw having a plurality of blade portions extending in a spiral shape may be used. is there. The screw has at least one blade.

  Furthermore, the fixed ring 28, the movable ring 29, and the screw 21 can be made of metal such as stainless steel. However, if at least a part of these is made of resin, the cost can be reduced and each of the components can be reduced. The weight of the element can be reduced. In particular, if the screw 21 is made of resin to reduce the weight, the operation for extracting or inserting the screw 21 from the cylindrical body 3 becomes extremely easy.

It is a partial cross section front view of a solid-liquid separator. It is a perspective view which shows one fixed ring, one movable ring, and a spacer. It is a disassembled perspective view of a cylindrical body and a screw. It is a longitudinal cross-sectional view of a cylindrical body. It is a perspective view which shows the structure regarding the connection of the output shaft and the axial part of a screw. It is a fragmentary sectional view which shows a cylindrical body when the movable stay bolt occupies the 1st position. It is a fragmentary sectional view which shows a cylindrical body when the movable stay bolt shown in FIG. 6 occupied the 2nd position. It is a fragmentary sectional view of the solid-liquid separation device constituted so that a plurality of stay bolts could be moved between the 1st position and the 2nd position. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 8 occupied the 2nd position. It is a fragmentary sectional view similar to FIG. 6 which shows the other example of a guide. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 10 occupied the 2nd position. It is a fragmentary sectional view which shows the example which formed the guide which consists of a long hole in the support member for stay bolts. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 12 moved to the 2nd position. It is a fragmentary sectional view which shows the example which formed the two guides which consist of a long hole in the support member for stay bolts. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 14 moved to the 2nd position. It is a fragmentary sectional view which shows the other example of the guide formed in the supporting member for stay bolts. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 16 moved to the 2nd position. It is a figure similar to FIG. 10 which shows an example of a structure of a cylindrical part when a guide is provided in a supporting member. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 18 occupied the 2nd position. It is a fragmentary sectional view which shows the example in which a stay bolt has not penetrated the fixing ring. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 20 occupied the 2nd position. It is a figure which shows the fixing ring and the spacer integrated with the fixing ring. It is a fragmentary sectional view showing the example where the spacer is not attached to the stay bolt which can move the 1st position and the 2nd position. It is a fragmentary sectional view which shows a mode when the movable stay bolt shown in FIG. 23 occupied the 2nd position.

Explanation of symbols

21 Screw 28 Fixed ring 29 Movable ring 33, 33A, 33B Long hole 34, 34A, 34B, 34C, 34D, 35, 35A, 35B Stay bolt 36, 36A, 37, 37A Nut 38, 38A, 38B, 39, 39A, 39B, 39C, 39D Spacer 154A, 154B, 155A, 155B, 160, 161 Recess 133, 233 Outer peripheral part D ₄ Outer diameter D ₅ Inner diameter

Claims (10)

A plurality of fixing rings arranged at intervals from each other by a spacer; a movable ring arranged between adjacent fixing rings; a plurality of connecting members for connecting the plurality of fixing rings; the plurality of fixing rings; In the solid-liquid separation device comprising a screw extending inside the movable ring, and a drive device that rotationally drives the screw, wherein the inner diameter of the movable ring is set smaller than the outer diameter of the screw,
The screw is detachably connected to the drive device, and at least one connecting member can prevent the movable ring from being detached from between the adjacent fixed rings, and the screw. In a state where the movable ring is extracted from the inside of the fixed ring and the movable ring, the movable ring is arranged to be movable between a second position where the movable ring can be extracted from between the adjacent fixed rings. A solid-liquid separation device comprising a guide for guiding the connecting member so as to move between the first position and the second position without being extracted in the axial direction. The solid-liquid separator according to claim 1, wherein at least one connecting member is movable between the first position and the second position together with a spacer attached to the connecting member. The spacer attached to the connecting member movable between the first position and the second position is not limited to the case where the connecting member is in the first position and the second position. 3. The device according to claim 2, wherein the guide member is formed so as not to be disengaged from between adjacent fixing rings even when moving between the first position and the second position while being guided by the guide. Solid-liquid separator. The solid-liquid separator according to claim 1, wherein the guide is provided on at least one fixing ring. The connecting member movable between the first position and the second position is movably fitted in a long hole formed in the at least one fixing ring, and the guide is formed by the long hole. The solid-liquid separator according to claim 4. When the connecting member movable between the first position and the second position occupies the first position, the connecting member is fitted in a first recess formed in the at least one fixing ring. When the connecting member occupies the second position, the connecting member is fitted into a second recess formed in the at least one fixing ring, and the guide is connected to the first recess. The solid-liquid separator according to claim 4, wherein the solid-liquid separator is formed by an outer peripheral portion of a fixing ring between the two concave portions. The solid-liquid separation device according to claim 1, further comprising a support member that supports the connecting member, wherein the guide is provided on at least one support member. The connecting member movable between the first position and the second position is movably fitted in a long hole formed in the at least one support member, and the guide is formed by the long hole. The solid-liquid separator according to claim 7. When the connecting member movable between the first position and the second position occupies the first position, the connecting member fits into a first recess formed in the at least one support member. When the connecting member occupies the second position, the connecting member is fitted into a second recess formed in the at least one support member, and the guide is connected with the first recess. The solid-liquid separator according to claim 7, wherein the solid-liquid separator is formed by an outer peripheral portion of the support member between the two recesses. The connecting member is constituted by a stay bolt, and a plurality of fixing rings are fixed by screwing a nut onto a male screw formed on the stay bolt and tightening the nut, and the first and second positions are fixed. The solid bolt according to any one of claims 1 to 9, wherein the stay bolt is allowed to move along the guide by loosening a nut screwed to a stay bolt movable between the stay bolts. Liquid separation device.

Images