JP2006198593A - Solid-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid-liquid separator capable of easily changing a movable ring, comprising a plurality of fixed rings disposed in the axial direction leaving a space each other by a spacer, the movable rings each disposed between the fixed rings, a plurality of stay bolts fixedly connecting the plurality of fixed rings, a screw extending through inwards of the fixed rings and the movable rings and a driving device which drives the screw, wherein an inner diameter of the movable ring is set so as to be smaller than an outer diameter of the screw. <P>SOLUTION: The screw 21 is connected detachably to the driving device and the stay bolt 35 is detachably inserted into a groove 33 formed on the fixed ring 28 so as to be able to remove toward the orthogonal direction F with respect to the axial direction of the stay bolt 35. <P>COPYRIGHT: (C)2006,JPO&NCIPI

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, A solid-liquid separator comprising: a fixed ring and a screw extending inside the movable ring; and a drive device that rotationally drives the screw, wherein an inner diameter of the movable ring is set smaller than an outer diameter of the screw It is.

  In order to separate the liquid from the treatment object containing a large amount of liquid, for example, organic sludge such as food processing wastewater or treated sewage, or inorganic sludge such as cutting oil containing cutting waste or paint waste liquid containing paint. The use of a solid-liquid separation device of a type has been conventionally known (see, for example, Patent Document 1). According to this type of solid-liquid separation device, the processing object flowing in 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 transferred to the axial direction of the cylindrical body. The liquid separated from the object to be processed that moves toward the outlet opening on the end side and moves through the cylindrical body is discharged outside the cylindrical body through a minute gap between the fixed ring and the movable ring, and the liquid content is reduced. The object to be treated 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 motor of the drive device is separated from the shaft portion of the screw, and the motor 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 this 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, the cylindrical body consisting of a large number of movable rings and stationary rings alternately stacked is very heavy, so the cylindrical body is removed from the support frame and carried on the floor, and conversely, it is carried from the floor to the support frame. A lot of labor is required for the assembly work. 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, the present invention provides a solid-liquid separator of the type described at the beginning, wherein the screw is detachably connected to the drive device, the screw is detached from the drive device, and the screw is removed. At least one connection member is connected to the plurality of fixed rings so that each movable ring can be extracted from between adjacent fixed rings in a state where the fixed ring and the movable ring are extracted from the inside. A solid-liquid separation device is proposed, which is assembled with a spacer in a direction perpendicular to the axial direction so as to be removable (claim 1).

  Further, in the solid-liquid separator according to claim 1, the connecting member that is detachable in a direction perpendicular to the axial direction of the connecting member is detachably fitted in the notch formed in the fixing ring. (Claim 2).

  Furthermore, in the solid-liquid separation device according to claim 2, the notch has an opening through which the connecting member passes when the connecting member is attached and detached, and the connecting member is positioned when the connecting member is assembled. And the fitting member has a diameter that is set larger than the width of the opening, and the cross-section of the connecting member that fits into the notch has a minor axis that is smaller than the width of the opening. It is advantageous if the elongated portion has a long axis that is larger than the width of the opening and smaller than the diameter of the fitting portion.

  Further, in the solid-liquid separation device according to any one of claims 1 to 3, at least a part of the spacer provided on the connecting member that is detachable in a direction orthogonal to the axial direction of the connecting member is It is advantageous if it is integrated with the connecting member (claim 4).

  Furthermore, in the solid-liquid separator according to any one of claims 1 to 4, it is advantageous that at least a part of the fixed ring, the movable ring, and the screw is made of a resin (claim 5). .

  Further, in the solid-liquid separation device according to any one of claims 1 to 5, each spacer fitted to a connecting member that is not detachable in a direction orthogonal to the axial direction of the connecting member is connected to the spacer. It is advantageous if it is formed integrally with one of the two adjacent fixing rings (Claim 6).

  According to the present invention, the movable ring can be taken out from between the adjacent fixed rings in a state where the screw is detached from the driving device and the screw is extracted from the inside of the fixed ring and the movable ring. The movable ring can be replaced.

  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. 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. The upper opening constitutes an inlet 4 through which sludge flows. 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 a main body 17 whose upper and lower portions are open and whose horizontal cross section is formed in a rectangular shape, and a bearing plate 18, and a side wall 19 of the main body 17 on the side facing the cylindrical body 3, Openings 22 and 23 having a diameter larger than the outer diameter of a screw 21 described later are formed in the side wall 20 of the main body 17 facing this. 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). The above-described 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 19 by bolts 24 and nuts 25. The lower opening of the main body 17 constitutes a discharge port 26 through which the dewatered sludge is discharged.

  On the other hand, the cylindrical body 3 includes a plurality of fixed rings 28 that are spaced apart from each other in the axial direction by small ring-shaped spacers 38 and 39, and a movable ring 29 that is disposed between adjacent fixed rings 28. It is constituted by. 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 adjacent fixing rings 28. 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 separator, as shown in FIGS. 2 to 4, attachment holes 32 are respectively formed in the three ears 30 of each fixing ring 28, and one of the other ears 31 located on the upper side is one side. A notch 33 having an opening is formed. The three mounting holes 32 of the plurality of fixing rings 28 located adjacent to each other are concentrically positioned, and the notches 33 of the plurality of fixing rings 28 are also aligned in a straight line in the axial direction of the cylindrical body 3. Is located at.

  A stay bolt 34, which is an example of a connecting member, is inserted into each mounting hole 32 formed in each fixing ring 28 and a spacer 39 arranged between each fixing ring 28. 1, nuts 36 and 36 </ b> A are respectively screwed and tightened to male threads formed at respective ends of the inlet member 1 and through the side wall 5 of the inlet member 1 and the side wall 19 of the outlet member 2. On the other hand, a stay bolt 35, which is an example of a connecting member, is also inserted into a notch 33 formed in each fixing ring 28 and a spacer 38 disposed between each fixing ring 28. As shown, nuts 37 and 37A pass through notches 54 and 55 formed in the side wall 5 of the inlet member 1 and the side wall 19 of the outlet member 2, respectively, and male threads formed at each end of the stay bolt 35. Each is screwed and tightened. As shown in FIGS. 1 and 4, the upper portions of the notches 33, 54, and 55 are opened. In FIG. 1, some stay bolts and spacers are omitted for easy understanding of the drawing.

  As described above, the plurality of fixing rings 28 are integrally fixed 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 either case, the stay bolts 34 and 35, which are examples of the connecting members, serve to connect the plurality of fixing rings 28, and a plurality of spacers 38 and 39 are fitted to each connecting member. A plurality of such connecting members are provided. 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.

On the other hand, as shown in FIG. 4, the thickness T of each movable ring 29 disposed between each fixed ring 28 is set smaller than the gap width G between each fixed ring, and the end face of each fixed ring 28 A minute gap g of, for example, about 0.5 to 1 mm is formed between the end faces of the movable ring 29 facing this. As will be described later, the minute gap g allows moisture separated from the sludge, that is, the filtrate to pass therethrough. The outer diameter D ₁ of the respective movable ring 29 is smaller than the diameter D ₂ of the circle CC formed by the inner surface of the four spacers 38, 39 positioned around the (Figure 2), yet the fixing ring 28 It is set larger than the inner diameter D _3. 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. In FIG. 3, reference numerals 34A and 34B are given to the two stay bolts located in the middle in the height direction, and the center X of one of the stay bolts 34A and the center X of the fixing ring 28 are defined. The angle α formed by the connecting line L1 and the line L2 connecting the center of the other stay bolt 35B and the center X of the fixing ring 28 is approximately 180 °.

  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 member 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 is inserted into the bearing cup 44. The bearing member 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. Therefore, when the motor 12 is operated and the output shaft 45 rotates, the rotation is transmitted to the screw 21 through the engaging piece 50 and the engaging groove 51 engaged with each other, and the screw 21 is rotated around its central axis. Rotate to. 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.

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

  In a flocking device (not shown), the flocculant is mixed and stirred with sludge containing a large amount of water, and thereby 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. Thus, the sludge that has flowed into the cylindrical body 3 moves toward the outlet opening 3B on the other axial end side of the cylindrical body 3 by the rotation of the screw 21. 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 flows down to the service tank (not shown) disposed below the filtrate receiving member 40 through the filtrate discharge pipe 46. Since this filtrate still contains some solid content, the filtrate is again supplied to the solid-liquid separator together with other sludge and dehydrated.

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 way, 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 improved.

  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 in this way 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 movable plate 29 is worn during the repeated solid-liquid separation operation described above, it is necessary to replace it with a new movable plate. 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. If the end portion is detached from the hollow portion 49 of the output shaft 45 and 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.

  Next, when the nuts 37 and 37A screwed to the stay bolt 35 located at the top of the four stay bolts 34 and 35 are loosened, there is no longer any thing that restrains the stay bolt 35. Therefore, when the stay bolt 35 is lifted upward as shown by an arrow F in FIGS. 1, 3, 4 and 6, the stay bolt 35 is removed from the notch 33 formed in the fixing ring 28 and the inlet member. 1 and the notches 54 and 55 formed in the side walls 5 and 19 of the outlet member 2 can be directly extracted upward. At this time, as shown in FIG. 6, the spacer 38 fitted to the stay bolt 35 is also extracted from between the fixing rings 28 together with the stay bolt 35. Moreover, since the spacer 38 remains fitted to the stay bolt 35, the spacer 38 does not fall downward. In this state, as described above with reference to FIG. 3, the angles formed by the lines L <b> 1 and L <b> 2 connecting the centers of the stay bolts 34 </ b> A and 34 </ b> B located in the middle of the height direction and the center X of the fixing ring 28. Since α is approximately 180 °, if the movable ring 29 disposed between the fixed rings 28 is grasped by a hand and lifted upward, the movable ring 29 is taken out from between the fixed rings 28. Can do.

  Next, a new movable ring 29 is inserted between each fixed ring 28, and a stay bolt 35 fitted with a large number of spacers 38 is inserted into the notch 33 formed in each fixed ring 28, the inlet member 1 and the outlet member 2. The spacers 38 are arranged between the fixing rings 28 adjacent to each other by fitting into the notches 54 and 55 formed in the side walls 5 and 19, respectively. Subsequently, the nuts 37 and 37A are screwed and tightened to the stay bolt 35, respectively, and then the screw 21 is inserted into the cylindrical body 3 to engage the engaging piece 50 and the engaging groove 51, thereby The output shaft 45 can be connected. Further, the bearing plate 18 of the outlet member 2 is fixed to the main body 17 by bolts 24 and nuts 25, and one end of the screw 21 is rotatably supported by the bearing 43. In this way, the installation work of a new movable ring 29 is completed.

  As described above, when exchanging the movable ring 29, it is not necessary to remove the driving device including the cylindrical body 3 and 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.

  Conventionally, since all the stay bolts are inserted into the mounting holes formed in the fixing ring, after the screw is extracted from the cylindrical body, the bolt corresponding to the stay bolt 35 shown in FIG. 1 is removed from the cylindrical body. To remove it, after loosening the nut, the stay bolt had to be pulled from the fixing ring in the axial direction. However, in this case, the stay bolt is also pulled out from the spacer disposed between the adjacent fixing rings, so that the spacer falls on the filtrate receiving member, and in some cases, is located below the spacer. There was a risk of falling into the sludge of the service tank. For this reason, after removing the cylindrical body from the support frame and placing the cylindrical body on the floor surface, the stay bolt must be removed from the cylindrical body, and the movable ring must be replaced. It required a lot of effort. On the other hand, in the solid-liquid separation device of this example, the stay bolt 35 is moved in a direction orthogonal to the axial direction of the bolt 35 together with the spacer 38 fitted to the stay bolt 35 with respect to the fixing ring 28. The spacer 38 does not fall downward even if the stay bolt 35 is detached from the fixing ring 28 while the fixing ring 28 of the cylindrical body 3 is fixed to the stays 13 and 52 of the support frame. .

  The solid-liquid separator described above is configured so that only one stay bolt 35 can be attached to and detached from the fixing ring 28 in a direction perpendicular to the axial direction of the stay bolt 35. The stay bolt 34 can also be assembled to the fixing ring 28 so that it can be attached to and detached from the fixing ring 28 in a direction perpendicular to the axial direction of the stay bolt 34. That is, instead of forming the mounting holes 32 in the respective fixing rings 28, notches (not shown) having one opening are formed in the same manner as the notches 33, and the respective stay bolts 34 are removably fitted into these notches. The nuts 36 and 36A are screwed to the end portions of the stay bolts 34 to fix the fixing rings 28 and loosen the nuts 36 and 36A. It is configured so that it can be detached from the fixing ring 28 in a direction perpendicular to the axial direction of the stay bolt 34. At that time, when the movable ring 29 is taken out from between the fixed rings 28, if the stay bolt located at the lowermost position (particularly indicated by reference numeral 34C in FIG. 3) is removed, at that time, all movable Since the ring 29 falls downward, it is necessary not to remove the stay bolt 34C. When five or more stay bolts are arranged at equal intervals in the circumferential direction of the fixed ring, a plurality of stay bolts located on the upper side are arranged in the axial direction so that the movable ring can be taken out from between the fixed rings. It is necessary to configure so that it can be taken out in a direction orthogonal to the direction. In short, with the screw removed from the drive unit and with the screw pulled out from the inside of the fixed ring and the movable ring, the movable ring can be removed from between the adjacent fixed rings and The at least one connecting member is assembled to the plurality of fixing rings so as not to fall together with the spacer in a direction perpendicular to the axial direction of the connecting member.

  By the way, in the solid-liquid separator described above, as can be seen from FIGS. 1, 3, 4, and 6, the stay bolt 35 is fitted into the notch 33 formed in the fixing ring 28. That is, the connecting member that can be detached from the plurality of fixing rings in a direction perpendicular to the axial direction of the connecting member is detachably fitted in a notch formed in the fixing ring. Thereby, the stay bolt 35 can be easily attached to and detached from the fixing ring 28. However, in the state shown in FIG. 1, if the nuts 37, 37 </ b> A are loosened with respect to the stay bolt 35, the stay bolt 35 may come out of the notch 33.

Therefore, as shown in FIGS. 7 and 8, the stay bolt 35 detachable from the fixing ring 28 in a direction orthogonal to the axial direction of the stay bolt is fitted into a notch 33 formed in the fixing ring 28. The notch 33 has an opening 60 through which the stay bolt 35 passes when the stay bolt 35 is attached and detached, and a circular cross-sectional fit where the stay bolt 35 is located when the stay bolt 35 is assembled. It is preferable to configure so as to have the joining portion 61. Moreover, as shown in FIG. 7, the diameter d ₁ of the fitting portion 61 is set to be larger than the width d ₂ of the opening 60, and the cross section of the stay bolt 35 fitted into the notch 33 is represented by the opening 60. a small short axis W1 than the width d ₂ of, greater than the width d ₂ of the opening 60, and than the diameter d ₁ of the fitting portion 61 is formed in an elongated shape having a small major axis W2. When the stay bolt 35 is attached to the notch 33 of the fixing ring 28, the stay bolt 35 is oriented as shown in FIG. 7, passed through the opening 60, and pushed into the fitting portion 61. At this time, since it is W1 _{<d 2,} the stay bolt 35 can pass through without hindrance opening 60. Next, the stay bolt 35 is rotated 90 ° as shown in FIG. Thus, W2> because it is d _2, when the loose tightening the stay bolts 35 and nuts, do not depart from the stay bolt 35 is immediately notches 33.

  In the solid-liquid separator described above, the ring-shaped spacers 38 are fitted to the stay bolts 35 that can be detached from the fixing ring 28 in the direction orthogonal to the axial direction of the stay bolts. May be integrally fixed to the stay bolt 35 by, for example, an adhesive or welding. Alternatively, the integrated stay bolt 35 and spacer 38 can be formed by cutting the material or 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 provided on the stay bolt 35 in various manners, and the spacer 38 can be configured in various forms other than the ring shape.

  When the spacer 38 is integrated with the stay bolt 35, the spacer 38 can be easily inserted or removed between the fixing rings 28 when the stay bolt 35 is attached to or detached from the plurality of fixing rings 28. it can. On the other hand, when the gap between the adjacent fixing rings 28 is extremely narrow, if the spacer 38 and the stay bolt 35 are integrated, the spacer 38 is inserted into the gap between the fixing rings 28. It may be difficult to remove. In addition, the gap between the fixing rings 28 may be different in the axial direction of the cylindrical body 3. Accordingly, in consideration of the size of the gaps between the fixing rings 28, the connecting members that can be detached in the direction perpendicular to the axial direction of the connecting members so that the spacers can be easily inserted into and removed from the gaps ( In the illustrated example, it is preferable that at least a part of the spacers provided on the stay bolt 35) is integrated with the connecting member.

  In the illustrated example, one movable ring 29 is disposed between the adjacent fixed rings 28, but it is natural that a plurality of movable rings 29 may be disposed between the adjacent fixed rings 28. is there. Similarly, in the illustrated screw 21 of the solid-liquid separator, the blade portion 42 is configured by one blade extending in a spiral shape, but the blade portion may be configured by a plurality of blades extending in a spiral shape. Of course.

  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 them 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.

  The spacer 39 fitted to the stay bolt 34 that is not detachable in the direction perpendicular to the axial direction of the stay bolt does not need to be attached to and detached from the fixing ring 28. Therefore, as shown in FIG. Can be formed integrally with one of the two fixing rings adjacent to the spacer 39, and the fixing ring 28 and the spacer 39 can be configured as one component. For example, when the fixing ring 28 and the spacer 39 are both made of metal, they can be integrated by welding, and when both the fixing ring 28 and the spacer 39 are made of resin, they are integrated by a mold. It can be manufactured as a molded product.

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 perspective view which shows a mode when a stay bolt is removed from a fixing ring with a spacer. It is a fragmentary sectional view which shows the notch formed in the fixing ring, and another example of a stay bolt. It is a fragmentary sectional view which shows a mode when the stay bolt shown in FIG. 7 is fitted to a notch. It is a figure which shows the fixing ring and the spacer integrated with the fixing ring.

Explanation of symbols

21 Screw 28 Fixed ring 29 Movable ring 33 Notch 38, 39 Spacer 60 Opening 61 Fitting part D ₄ Outer diameter D ₅ Inner diameter d ₁ Diameter d ₂ Width W1 Short axis W2 Long axis

Claims (6)

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; A solid-liquid separation device comprising a screw extending inside the movable ring and a drive device for rotating the screw, wherein the inner diameter of the movable ring is set smaller than the outer diameter of the screw. It is detachably connected to the drive device, the screw is detached from the drive device, and each movable ring can be taken out between adjacent fixed rings in a state where the screw is extracted from the inside of the fixed ring and the movable ring. The at least one connecting member can be directly connected to the plurality of fixing rings with respect to the axial direction of the connecting member. Solid-liquid separation apparatus characterized by being assembled detachably with spacers in the direction of. The solid-liquid separator according to claim 1, wherein the connecting member that can be detached in a direction perpendicular to the axial direction of the connecting member is detachably fitted in a notch formed in the fixing ring. The notch has an opening through which the connecting member passes when the connecting member is attached and detached, and a fitting portion where the connecting member is located when the connecting member is assembled, and the diameter of the fitting portion is The cross-section of the connecting member that is set larger than the width of the opening and that fits into the notch is shorter than the width of the opening, larger than the width of the opening, and the fitting The solid-liquid separation device according to claim 2, wherein the solid-liquid separation device is formed in an elongated shape having a long axis smaller than the diameter of the portion. The fixed member according to any one of claims 1 to 3, wherein at least a part of the spacers provided on the connecting member that is detachable in a direction orthogonal to the axial direction of the connecting member is integrated with the connecting member. Liquid separation device. The solid-liquid separator according to any one of claims 1 to 4, wherein at least a part of the fixed ring, the movable ring, and the screw is made of resin. Each spacer fitted to a connecting member that is not detachable in a direction perpendicular to the axial direction of the connecting member is formed integrally with one of the two fixing rings adjacent to the spacer. The solid-liquid separator according to any one of claims 1 to 5.

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