JP2007268517A - Solid/liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid/liquid separator for rotationally driving a screw extended in a solid/liquid separation part, and for moving a processing object entering from the entrance at one terminal side in the axial direction of the solid/liquid separation part to the solid/liquid separation part toward the exit at the other edge side of the axial direction of the solid/liquid separation part, and for discharging filtrate separated from the processing object through the filtrate discharging part of the solid/liquid separation part to the outside of the solid/liquid separation part, and for discharging the processing object whose liquid content is decreased from the exit to the outside of the solid/liquid separation part, which is provided with a regulating member positioned so as to face the exit of the solid/liquid separation part for regulating the quantity of the processing object to be discharged from the exit, and for increasing a pressure in the solid/liquid separation part, wherein it is possible to prevent the deterioration of a pressure in the solid/liquid separation part, and to prevent the processing object from being made solid and clogging the solid/liquid separation part. <P>SOLUTION: This solid/liquid separator is provided with an energizing means 57 for supporting a regulating member 47 so that it can be moved to a direction approaching or separating from an exit 3B of a solid/liquid separation part 3 on a shaft 41 of a screw 21, and for pressurizing the regulating member 47 toward the exit 3B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, the screw disposed in the solid-liquid separation unit is driven to rotate, and the processing object entering the solid-liquid separation unit is moved toward the outlet of the solid-liquid separation unit, while being separated from the processing object. A solid-liquid separator that discharges the filtrate to the outside of the solid-liquid separation section through the filtrate discharge section of the solid-liquid separation section, and discharges the processing object having a reduced liquid content from the outlet to the outside of the solid-liquid separation section. A regulating member that is positioned opposite to the outlet of the solid-liquid separation unit and that increases the pressure in the solid-liquid separation unit by regulating the amount of the processing object discharged from the outlet. The present invention relates to a solid-liquid separator.

  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 Documents 1 to 5). According to this type of solid-liquid separation device, since the regulating member is arranged facing the outlet of the solid-liquid separation unit, the amount of the processing object discharged from the outlet is regulated, and the inside of the solid-liquid separation unit Thus, the liquid removal efficiency for the object to be processed can be increased.

  However, the conventional regulating member is fixed to the shaft of the screw, and the distance between the regulating member and the outlet of the solid-liquid separation unit is kept constant. It was difficult to maintain the pressure in the solid-liquid separation part at an appropriate level when the liquid content of the processing object entering the solid-liquid separation part changed greatly during operation of the liquid separation apparatus. . This defect will be clarified more concretely by taking an example when the object to be treated is sludge containing a large amount of moisture.

  In general, sludge having a high water content is moving in the solid-liquid separator immediately after the start of the operation of the solid-liquid separator, and the amount of sludge having a low water content is small. For this reason, although the regulating member is provided facing the outlet of the solid-liquid separation unit, the pressure in the solid-liquid separation unit is kept relatively low, and the effect of squeezing moisture against sludge is reduced, and the solid-liquid separation unit A large amount of sludge with a high water content is discharged from the outlet. Thereby, the dewatering efficiency of sludge falls.

  On the other hand, if the moisture content of the sludge sent to the solid-liquid separation unit becomes too high during the operation of the solid-liquid separator, the dewatering efficiency for the sludge is lowered in the same manner as described above.

  Conversely, if the moisture content of the sludge fed into the solid-liquid separation unit becomes too low during the operation of the solid-liquid separation device, the regulating member is provided facing the outlet of the solid-liquid separation unit. A large amount of sludge having a low moisture content exists in the separation part, and the pressure in the solid-liquid separation part becomes excessively high. In this case, the hard sludge having an extremely low moisture content is clogged in the solid-liquid separation part, and there is a possibility that the motor that rotationally drives the screw will eventually stop. If it becomes like this, it will become impossible itself to perform solid-liquid separation.

  The above-described defects also occur when the object to be treated is something other than sludge, such as vegetable waste or fruit peel.

JP 60-19011 A JP-A-5-228695 JP 2003-265908 A Japanese Patent No. 3565841 Japanese Patent No. 3638597

  An object of the present invention is to provide a solid-liquid separation device capable of effectively suppressing the above-described conventional drawbacks.

  In order to achieve the above object, the present invention, in the solid-liquid separation device of the type described at the beginning, supports the regulating member so as to be movable in a direction approaching or separating from the outlet of the solid-liquid separation unit. Also, a solid-liquid separation device is provided, which is provided with an urging means for pressurizing the regulating member toward the outlet of the solid-liquid separation part (claim 1).

  Further, in the solid-liquid separator according to claim 1, it is advantageous that the regulating member is assembled to a shaft of the screw so as to rotate together with the screw (claim 2).

  Furthermore, in the solid-liquid separator according to claim 1 or 2, the urging means is disposed between a spring receiver fixed to the shaft of the screw and between the spring receiver and the regulating member. It is advantageous that a pressure spring is provided that pressurizes the regulating member toward the outlet of the solid-liquid separation part (claim 3).

  In the solid-liquid separation device according to claim 3, it is advantageous that a cylindrical cover that covers the pressure spring is fixed to the regulating member (claim 4).

  Furthermore, the solid-liquid separator according to claim 3 or 4, wherein the spring receiver is detachably fitted to the shaft of the screw and a plurality of spring receivers arranged in the axial direction of the shaft. It is advantageous if it is constituted by a member (claim 5).

  Further, in the solid-liquid separation device according to claim 3 or 4, it is advantageous that the solid-liquid separator is provided with spring force adjusting means for adjusting the spring force of the pressure spring (claim 6).

  Further, in the solid-liquid separation device according to claim 6, the spring force adjusting means includes a connecting bolt that spans between the spring receiver and the regulating member and extends substantially parallel to the axis of the screw, The connecting bolt is screwed to one member of the restricting member and the spring receiver, and the other member is slidably fitted and the head of the connecting bolt or the connecting bolt. The nut screwed to the second member is in contact with the surface of the other member opposite to the one facing the one member, and rotating the connecting bolt causes a gap between the regulating member and the spring receiver. It is advantageous if it is configured to change (Claim 7).

  The solid-liquid separator according to any one of claims 3 to 7, wherein the spring receiver is fixed to the shaft of the screw and, if necessary, the spring receiver is fixed to the shaft of the screw. In addition, it is advantageous to have spring receiving position adjusting means that allows movement in the axial direction (claim 8).

  Furthermore, the solid-liquid separator according to claim 8, wherein the spring receiver position adjusting means fixes the spring receiver to the shaft of the screw or releases the fixed state. It is advantageous if it comprises a member (claim 9).

  The solid-liquid separator according to claim 8, wherein the spring receiving position adjusting means is fitted to the shaft of the screw so as to be rotatable with respect to the screw shaft and movable in the axial direction of the screw. A ring-shaped first toothed member, a fixed member for a toothed member capable of fixing the first toothed member to the shaft of the screw, or releasing the fixed state; A second toothed member fixed to the screw, and the first toothed member is disposed opposite to the outlet of the solid-liquid separation unit with the spring receiver interposed therebetween. In a state in which the tooth tip of the first toothed member fixed to the screw shaft by the toothed member fixing member and the tooth tip of the second toothed member are in contact with each other A first toothed member is fitted to the shaft of the screw; After releasing the fixed state of the first toothed member with respect to the shaft of the screw, the first toothed member is rotated, and the teeth of the first toothed member and the teeth of the second toothed member are moved. By being engaged, the first toothed member is configured to allow the first toothed member to move along with the spring receiver in a direction away from the outlet of the solid-liquid separation unit along the axis of the screw. It is advantageous (claim 10).

  Furthermore, in the solid-liquid separation device according to claim 10, the fixing ring which is fitted to the outer peripheral portion of the second toothed member and is fixed to the second toothed member, and the screw It is advantageous to have a connecting member for connecting the spring receiver and the fixing ring so that the spring receiver rotates together with the fixing ring when the rotation is performed.

  The solid-liquid separation device according to claim 11, wherein the fixing ring and the second toothed member penetrate the fixing ring, the second toothed member, and the shaft of the screw in a diametrical direction. The fixing ring bolt and the nut fastened to the fixing ring bolt are tightened to the shaft of the screw, and the second toothed member is screwed in the axial direction thereof. It is advantageous if the second toothed member is prevented from rattling with respect to the shaft of the screw by the bolt for toothed member, the tip surface of which is pressed against the end surface of the shaft of the screw. ).

  Furthermore, in the solid-liquid separation device according to claim 8, the spring receiving position adjusting means is rotatably fitted to the screw shaft, and a screw member having a male screw formed on the outer peripheral surface; The screw member is fixed so that the screw member does not rotate with respect to the screw shaft, or the fixed state is released, and the screw member is allowed to rotate with respect to the screw shaft. A hole formed in the spring receiver, and a female screw formed on an inner peripheral surface of the hole engages with a male screw of the screw member. It is advantageous that the spring receiver is moved in the axial direction with respect to the shaft of the screw by rotating the screw member after releasing the fixed state of the screw member with respect to the shaft. ( Motomeko 13).

  The solid-liquid separator according to claim 13, wherein the fixing ring fixed to the shaft of the screw and the fixing ring so that the spring receiver rotates together with the fixing ring when the screw rotates. It is advantageous to have a connecting member for connecting the spring receiver (claim 14).

  According to the present invention, the restricting member is supported so as to be movable in a direction approaching or separating from the outlet of the solid-liquid separator, and is pressurized toward the outlet of the solid-liquid separator by the biasing means. Therefore, the regulating member can occupy an appropriate position with respect to the outlet of the solid-liquid separation unit according to the pressure of the solid-liquid separation unit, and always keeps a high liquid removal efficiency for the processing object, In addition, it is possible to effectively suppress the problem that the processing object is hardened and clogged.

  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. This solid-liquid separation device can be used for solid-liquid separation of various processing objects including liquids. Here, a case where a sludge containing a large amount of water is dehydrated will be described.

  The solid-liquid separation device shown here has an inlet member 1, an outlet member 2, and a plurality of fixed plates 28 and a plurality of movable plates 29, which will be described later. The upper opening is formed in a rectangular box shape, and 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 fixed plate 28 and the movable plate 29, and the other side wall 8 facing the side wall 5 of the inlet member 1 has a rectangular cross section. One side wall 10 of the motor support member 9 formed on the motor support member 9 is fixed by bolts and nuts, and a motor 12 with a reduction gear is fixedly supported on 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 is open at the top and bottom and has a horizontal cross section formed in a rectangular shape. The side wall 19 of the outlet member 2 facing the fixed plate 28 and the movable plate 29, and the outlet member facing the side wall 19 are provided. Two side walls 20 are formed with openings 22 and 23, respectively. 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 member 18 is disposed in the opening 23 formed in the side wall 20, and the bearing member 18 is detachably fixed to the side wall 20 by a bolt 24 and a nut 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, between the inlet member 1 and the outlet member 2, a plurality of fixing plates 28 formed of rings arranged at intervals in the axial direction by a plurality of small ring-shaped spacers 38 and fixed adjacent to each other in the axial direction. A movable plate 29 made of a ring disposed between the plates 28 is disposed. 2 is an exploded perspective view showing the appearance of two adjacent fixed plates 28, a movable plate 29 disposed between these fixed plates 28, and a spacer 38. The plurality of fixed plates 28 are shown in FIG. As shown in FIG. 3, four spacers 38 are arranged between fixed plates 28 arranged concentrically and adjacent in the axial direction.

  In the illustrated solid-liquid separator, as shown in FIGS. 2 and 3, each fixing plate 28 is formed with four ears 39 protruding in the radial direction and arranged in the circumferential direction thereof. A mounting hole 32 is formed in each ear 39. The stay bolts 34 extend through the center holes of the spacers 38 disposed between the mounting holes 32 formed in the ears 39 and the fixing plates 28 adjacent in the axial direction. As shown in FIG. 1, the stay bolt 34 penetrates the side wall 5 of the inlet member 1 and the side wall 19 of the outlet member 2, and nuts 36 and 36 </ b> A are respectively attached to male threads formed at respective end portions of the respective stay bolts 34. It is screwed and tightened. 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 plates 28 are integrally fixedly connected to each other by the plurality of stay bolts 34 and the nuts 36 and 36 </ b> A, and are fixed to the inlet member 1 and the outlet member 2. Each stay bolt 34 extends through the plurality of fixing plates 28 and serves to connect the plurality of fixing plates 28. It is also possible to assemble the fixing plates arranged so as to be spaced from each other by spacers so that they can be slightly moved.

  As shown in FIG. 3, the thickness T of each movable plate 29 arranged between each fixed plate 28 is set to be smaller than the gap width G between the fixed plates. A minute gap g of, for example, about 0.1 mm to 1 mm is formed between the end surfaces of the movable plate 29 facing the surface. As will be described later, the minute gap g constitutes a filtrate discharge section that allows moisture separated from sludge, that is, filtrate to pass through. The thickness T of the movable plate 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 fixed plate 28 is set to about 1.5 mm to 3 mm, for example. The sizes of the gap g, the thicknesses T and t, and the gap width G are appropriately set in consideration of the type of processing object.

FIG. 4 is an explanatory view showing the arrangement of the fixed plate 28, the movable plate 29, the spacer 38 arranged between the adjacent fixed plates 28, and the stay bolt 34. In this figure, the movable plate 29 is shown by a broken line. It is shown by. Here, when the interval between the two spacers 38 adjacent to each other in the circumferential direction of the fixed plate 28 is L, the interval L is smaller than the outer diameter D ₄ of the movable plate 29 (L <D ₄ ). Therefore, the movable plate 29 is prevented from coming out between the adjacent fixed plates 28.

Further, as shown in FIG. 2, when considering the circle CC in contact with the fixed plate center side portion of the plurality of spacers 38, the outer diameter D ₄ of the movable plates 29 is smaller than the diameter D ₁ of the circle CC, Moreover, the outer diameter D ₄ of each movable plate 29 is set larger than the inner diameter D ₃ of each fixed plate 28 (D ₁ > D ₄ , D ₄ > D ₃ ). Thus, each movable plate 29 is movable in the radial direction of the movable plate 29 and is rotatably held between the adjacent fixed plates 28 without coming out of the center hole of each fixed plate 28.

Further, in the solid-liquid separator of the present embodiment, as shown in FIG. 4, the outer diameter D ₂ of the fixed plate 28 is set smaller than the diameter D ₁ of the circle CC described above (D _1> D ₂₎ . In FIG. 4, when the adjacent fixed plate 28 and movable plate 29 are viewed in the axial direction, the portions where these plates 28 and 29 overlap each other are hatched. The fixing plate 28 of this example has a plurality of ears 39, and the outer diameter D ₂ of the fixing plate 28 is the outer diameter of an annular portion other than these ears 39.

  As described above, in the solid-liquid separation device of this example, the plurality of fixing plates 28 arranged at intervals in the axial direction by the spacers 38 and fixed to each other by the stay bolts 34, and the adjacent fixing plates 28. The movable plate 29, the side wall 5 of the inlet member 1, and the side wall 19 of the outlet member 2 constitute the solid-liquid separation unit 3 that separates the liquid from the object to be treated (sludge in this example). ing. The solid-liquid separation part 3 is formed hollow inside, and the inlet 6A of the solid-liquid separation part 3 is constituted by the opening 6 of the side wall 5 of the inlet member 1, and the solid-liquid separation is made by the opening 22 of the side wall 19 of the outlet member 2. An outlet 3B of the separation unit 3 is configured. FIG. 3 is a partial longitudinal sectional view of such a solid-liquid separator. Moreover, as shown in FIG. 1, the solid-liquid separation part 3 is inclined and arrange | positioned so that the exit 3B side may become high.

  Further, a screw 21 extending in the axial direction of the solid-liquid separation unit 3 is disposed inside the solid-liquid separation unit 3, and the screw 21 includes a shaft 41 and a blade 42 extending in a spiral shape integrally with the shaft 41. have. As shown in FIG. 1, the screw 21 extends through the plurality of fixed plates 28 and the movable plate 29, and is formed on the side wall 5 of the inlet member 1 and the side walls 19 and 20 of the outlet member 2. Further, one end portion of the shaft 41 of the screw 21 is rotatably supported by the bearing member 18. In addition, illustration of the screw 21 is abbreviate | omitted in FIG.

  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 engaging groove 51 is formed at the other end of the shaft 41 of the screw 21, and the end of the shaft 41 is inserted into the hollow portion 49 of the output shaft 45 as shown in FIG. The engaged groove 51 is engaged with an engagement piece 50 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.

  Next, a basic operation example of the solid-liquid separation device of this example will be described.

  Sludge in a service tank (not shown) located below the solid-liquid separator 3 is supplied to a flocking device (not shown), and the flocculant mixes flocculant with sludge containing a large amount of water. The agitation is performed to flake the sludge. 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 an arrow B, and is fixed to the fixing plate. 28 and the inner space of the movable plate 29. Thus, the sludge flows into the internal space of the solid-liquid separator 3 from the inlet 3A on one end side in the axial direction.

  The sludge that has flowed into the solid-liquid separator 3 as described above is conveyed toward the outlet 3B on the other end side in the axial direction of the solid-liquid separator 3 by the screw 21 that is rotationally driven by the motor 12. At this time, the water separated from the sludge, that is, the filtrate, is discharged out of the solid-liquid separation section through the filtrate discharge section formed by the minute gap g (FIG. 3) between each fixed plate 28 and the movable plate 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. 3, the outer diameter D ₆ of the screw 21 is set to be slightly smaller than the inner diameter D ₃ of the fixed plate 28 so that the rotation is not hindered (D ₃ > D ₆ ) is set such that the outer diameter D ₆ of the screw 21 is larger than the inner diameter D ₅ of the movable plate 29. Is the inner diameter _{D 5} of the movable plate 29 is set smaller than the outer diameter _{D 6} of the screw _{21 (D 6> D 5)} . For this reason, each movable plate 29 receives an external force from the screw 21 and is pushed in the radial direction by the rotation of the screw 21, and actively moves with respect to the fixed plate 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 plate 29, and the cleaning efficiency for the gap g can be enhanced.

  As described above, the water content of the sludge in the solid-liquid separator 3 is lowered, and the sludge having a reduced water content is discharged from the other end in the axial direction of the solid-liquid separator 3 as indicated by an arrow D in FIG. It is discharged from 3B. The sludge discharged from the solid-liquid separator 3 falls downward through the lower discharge port 26. The water content of the sludge after the dehydration treatment in this way is, for example, about 80 to 85% by weight.

  As described above, the solid-liquid separation device rotates and drives the screw disposed in the solid-liquid separation unit, and moves the processing object that has entered the solid-liquid separation unit toward the outlet of the solid-liquid separation unit. The filtrate separated from the processing object is discharged out of the solid-liquid separation part through the filtrate discharge part of the solid-liquid separation part, and the processing object having a reduced liquid content is discharged out of the solid-liquid separation part from the outlet. It is configured as follows.

  Incidentally, as shown in FIGS. 1 and 6, a regulating member 47 is provided to face the outlet 3 </ b> B of the solid-liquid separation unit 3. The regulating member 47 shown here is formed in a disc shape, and a cylindrical cover 54 is integrally fixed to the outer peripheral portion of the regulating member 47. Further, a sliding member 56 made of a resin ring is fitted and fixed in the center hole 55 of the regulating member 47, and the sliding member 56 is not rotatable with respect to the shaft 41 of the screw 21. It is slidably fitted in the axial direction. It is also possible to omit the sliding member 56 and directly fit the regulating member 47 to the shaft 41. Further, the cover 54 can be omitted.

  As described above, the sludge having a reduced moisture content is discharged from the outlet 3B of the solid-liquid separation unit 3, but at this time, the regulating member 47 is positioned facing the outlet 3B. The discharged sludge hits the regulating member 47, thereby regulating the amount of sludge discharged from the outlet 3B. In this way, the pressure in the solid-liquid separation unit 3 is increased, and the sludge dewatering efficiency in the solid-liquid separation unit 3 is increased. As described above, the regulating member is positioned opposite to the outlet of the solid-liquid separation unit, and regulates the amount of the processing object discharged from the outlet, thereby increasing the pressure in the solid-liquid separation unit and fixing the solid-liquid separation unit. The purpose is to increase the liquid removal efficiency of the object to be processed in the liquid separation section.

  Here, because the conventional regulating member is fixed to the shaft of the screw and the distance between the regulating member and the outlet of the solid-liquid separation unit is constant, the above-mentioned drawbacks are unavoidable. The regulating member 47 of this example is supported so as to be movable in the direction approaching or separating from the outlet 3B of the solid-liquid separation unit 3, as indicated by an arrow E in FIGS. 47 is pressurized toward the outlet 3B of the solid-liquid separator 3 by the urging means 57 shown in FIG. Moreover, the regulating member 47 is assembled so as to be unable to rotate relative to the shaft 41 of the screw 21 so as to rotate together with the screw 21.

  More specifically, the regulating member 47 is fitted to the shaft 41 of the screw 21 via the sliding member 56 so as to be slidable in the axial direction, and is also a sectional view taken along the line VII-VII in FIG. As shown in FIG. 7, a groove 58 extending in the axial direction is formed on the outer peripheral surface of the shaft 41 of the screw 21, and a protrusion 59 protruding from the sliding member 56 is formed in the groove 58. It is slidably fitted in the direction. As a result, the regulating member 47 can slide in the direction E approaching or separating from the outlet 3B of the solid-liquid separation unit 3 via the sliding member 56, but cannot rotate relative to the shaft 41. Supported by the shaft 41.

  The urging means 57 illustrated in FIG. 6 is disposed between a spring receiver 61 fixed to the shaft 41 of the screw 21 by a bolt 60 and between the spring receiver 61 and the regulating member 47. And a pressure spring 62 that pressurizes the solid-liquid separator 3 toward the outlet 3B of the solid-liquid separator 3. The pressure spring 62 shown here is composed of a compression coil spring, and a plurality of pressure springs 62 are used, but a pressure spring consisting of a leaf spring or the like can also be used. The spring receiver 61 is fitted to the shaft 41 of the screw 21 so that the hole 16 formed in the center thereof is movable in the axial direction, and the spring receiver 61 is fixed to the shaft 41 by tightening the bolt 60. It is done.

  The pressure spring 62 is covered with a cylindrical cover 54 fixed to the regulating member 47, and sludge is prevented from entering the pressure spring 62. Thereby, the malfunction that the pressurization spring 62 is polluted with sludge or the function of the spring is impaired is prevented.

  According to the above-described configuration, immediately after the start of the operation of the solid-liquid separation device, or when the moisture content of the sludge sent into the solid-liquid separation unit 3 increases and the pressure in the solid-liquid separation unit 3 decreases, Since the pressure applied to the regulating member 47 is reduced by the sludge discharged from the outlet 3B of the liquid separating unit 3, the regulating member 47 pressurized by the pressure spring 62 approaches the outlet 3B of the solid-liquid separating unit 3, A gap GA (FIG. 6) between the regulating member 47 and the outlet 3B becomes narrow. For this reason, the quantity of the sludge discharged | emitted from the exit 3B of the solid-liquid separation part 3 reduces, and the pressure in the solid-liquid separation part 3 rises. Thereby, the fall of the dewatering efficiency with respect to sludge is prevented.

  On the contrary, when the moisture content of the sludge sent to the solid-liquid separator 3 decreases and the pressure in the solid-liquid separator 3 increases, the pressure applied to the regulating member 47 by the sludge discharged from the outlet 3B increases. Therefore, the regulating member 47 moves in a direction away from the outlet 3B of the solid-liquid separator 3 against the pressurizing action of the pressure spring 62, and the gap GA between the regulating member 47 and the outlet 3B is enlarged. For this reason, the quantity of the sludge discharged | emitted from the exit 3B increases, and the pressure in the solid-liquid separation part 3 falls. Thereby, the malfunction which the solid sludge which the moisture content became low in the solid-liquid separation part 3 may be blocked. The gap GA between the regulating member 47 and the outlet 3B during the operation of the solid-liquid separator is, for example, about 5 to 30 mm.

  As described above, according to the solid-liquid separation device of this example, the regulating member 47 occupies an appropriate position with respect to the outlet 3B of the solid-liquid separation unit 3 according to the pressure in the solid-liquid separation unit 3, and against sludge While maintaining high dehydration efficiency, it is possible to prevent a problem that sludge is solidified and clogged in the solid-liquid separator 3. Such an effect can be similarly achieved when the object to be treated is an object other than sludge.

  Further, since the regulating member 47 rotates together with the screw 21, sludge having a reduced water content can be efficiently discharged out of the solid-liquid separation unit 3 from the outlet 3 </ b> B of the solid-liquid separation unit 3.

  As described above, according to the solid-liquid separation device of this example, it is possible to prevent clogged solid sludge in the solid-liquid separation unit 3, but the process fed into the solid-liquid separation unit Depending on the characteristics of the object, it is conceivable that the object to be processed hardens and becomes clogged in the solid-liquid separation unit 3.

  Therefore, in the solid-liquid separation device of this example, the spring receiver 61 is fixed to the shaft 41 of the screw 21 by the spring receiver fixing member including the bolt 60 as described above. For this reason, if sludge or the like is solidified and clogged in the solid-liquid separator 3 as described above, the bolts 60 are loosened after the motor 12 is stopped and the shaft 41 is The fixed state of the spring receiver 61 can be released, and the spring receiver 61 can be moved along the shaft 41 in a direction away from the outlet 3B of the solid-liquid separator 3. Thereby, since the regulating member 47 can be greatly separated from the outlet 3B of the solid-liquid separation unit 3 and the gap GA can be greatly enlarged, a bar or the like (not shown) can be easily inserted from the outlet 3B, and the solid-liquid separation unit The sludge stuck in 3 can be scraped out easily. After the clogged sludge scraping operation is finished, the spring receiver 61 is returned to the original position again and the bolt 60 is tightened, so that the spring receiver 61 can be fixed at a predetermined position with respect to the shaft 41.

  As described above, the solid-liquid separator of the present example fixes the spring receiver to the screw shaft, and the spring receiver moves in the axial direction with respect to the screw shaft as necessary. In the solid-liquid separator shown in FIGS. 1 to 7, the spring receiver position adjusting means fixes the spring receiver 61 to the shaft 41 of the screw 21. Or a spring receiver fixing member made of a bolt 60 capable of releasing the fixed state. Of course, a spring receiver fixing member other than the bolt 60, for example, a pin inserted into the spring receiver 61 and the shaft 41 can be used.

  Further, in order to adjust the spring force of the pressure spring 62, the bolt 60 is loosened and the spring receiver 61 is moved along the shaft 41 of the screw 21, and then the bolt 60 is tightened to fix the spring receiver 61 in its position. You can also. Thus, the solid-liquid separation device of this example has a spring force adjusting means for adjusting the spring force of the pressure spring. The spring force of the pressure spring 62 is changed by the spring force adjusting means in accordance with the characteristics of the object to be processed or for the purpose of changing the moisture content of the dewatered sludge discharged from the outlet 3A of the solid-liquid separation unit 3. It can be done. In the solid-liquid separator shown in FIG. 6, the spring force adjusting means is a spring receiver comprising a bolt 60 which can fix the spring receiver 61 to the shaft 41 of the screw 21 or release the fixed state. It is comprised by the fixing member. The bolt 60 constitutes the spring force adjusting means and also the above-described spring receiving position adjusting means.

  FIG. 17 is a cross-sectional view similar to FIG. 6, showing another example of the regulating member 47 and a configuration related thereto. The regulating member 47 shown here is also arranged to face the outlet 3B of the solid-liquid separation unit 3, and the resin sliding member 56 fitted and fixed in the center hole 55 of the regulating member 47 is a shaft 41 of the screw 21. However, it is slidably fitted in the axial direction. As described above, the regulating member 47 shown in FIG. 17 is also non-rotatable relative to the shaft 41 of the screw 21 via the sliding member 56, but is slidably fitted in the axial direction thereof. . Moreover, the regulating member 47 is also pressurized toward the outlet 3 </ b> B of the solid-liquid separation unit 3 by the biasing means 57 including the spring receiver 61 and the pressure spring 62. The pressure spring 62 shown here is composed of a compression coil wound around the shaft 41 of the screw 21, one end of which is pressed against the sliding member 56 for the regulating member 47 and the other end is pressed against the spring receiver 61. is doing. One end of the pressure spring 62 may be brought into pressure contact with the regulating member 47. Here, one pressure spring 62 is provided. A cover 54 covering the pressure spring 62 is also fixed to the regulating member 47 of this example.

  The spring receiver 61 of the urging means 57 shown in FIG. 17 is composed of a plurality of spring receiver members 61A that are detachably fitted to the shaft 41 of the screw 21, and these spring receiver members 61A are They are arranged so as to overlap in the axial direction of the shaft 41. In the illustrated example, each spring receiving member 61A is constituted by a ring, and the hole 16 formed at the center of each spring receiving member 61A is not rotatable with respect to the shaft 41 of the screw 21. The shaft 41 is slidably fitted to the shaft 41 in the axial direction. For example, a groove (not shown) extending in the axial direction is formed on the shaft 41 similarly to the groove 58 shown in FIG. 7, and the inner peripheral surface of the center hole 16 of each spring receiving member 61 is formed in the groove. By fitting a protrusion (not shown) formed on the screw 21 so as to be slidable, the spring receiving member 61A is non-rotatable with respect to the shaft 41 of the screw 21 and is slidable in the axial direction. Can do.

  A stopper made of a fixing ring 114 is fitted to the shaft 41 of the screw 21, and the fixing ring 114 is screwed to a bolt 115 extending through the fixing ring and the shaft 41 and a male screw of the bolt 115. The nut 41 is detachably fixed to the shaft 41 by a tightened nut (not shown). A plurality of spring receiving portions 61 </ b> A are arranged between the fixing ring 114 and the pressure spring 62. Thereby, the plurality of spring receiving members 61A are pressed against the fixing ring 114 by the pressing springs 62, and the spring receiving member 61A located on the rightmost side in FIG. In this way, the spring receiver 61 is fixed to the shaft 41 of the screw 21, and in this state, the regulating member 47 of the solid-liquid separator 3 is moved by the cooperative action of the spring receiver 61 and the pressure spring 62. Pressurize toward the outlet 3B. With this configuration, the amount of sludge discharged from the outlet 3B of the solid-liquid separation unit 3 is regulated to increase the pressure in the solid-liquid separation unit 3 and the solid-liquid separation unit 3 in the same manner as the regulation member described above. The dewatering efficiency for the sludge inside can be increased.

  Here, in order to adjust the spring force of the pressure spring 62, the nut 25 is removed from the bolt 24, the bolt 24 is removed from the bearing member 18 and the outlet member 2, and the bearing member 18 is removed from the shaft 41 of the screw 21. At the same time, the bolt 115 is removed from the fixing ring 114, and the fixing ring 114 is extracted from the shaft 41. Accordingly, a part of the spring receiving member 61A can be extracted from the shaft 41, or another spring receiving member can be fitted to the shaft 41, and the other spring receiving member can be added. After adjusting the number of the spring receiving members 61A in this way, the fixing ring 114 is fixed to the shaft 41 again by the bolts 115 and nuts, and the bearing member 18 is fitted to the shaft 41 of the screw 21 so that the outlet member 2 is fixed. It fixes to the side wall 20 of.

  By adjusting the thickness H of the spring receiver 61 as described above, the spring force of the pressure spring 62 can be set to a desired magnitude. Further, as described above, by removing the bearing member 18 from the outlet member 2 and extracting the fixing ring 114 from the shaft 41, the entire spring receiver 61 is largely separated from the outlet 3B of the solid-liquid separator 3, or all By removing the spring receiver 61 from the shaft 41, the regulating member 47 can be greatly separated from the solid-liquid separation part 3 side, and the gap GA can be greatly enlarged. In this state, it is possible to clean the inside of the solid-liquid separation unit 3 by inserting a rod from the outlet 3B, scraping out the sludge clogged in the solid-liquid separation unit 3. In this way, the position of the spring receiver 61 can be easily adjusted. The other configuration of the solid-liquid separation device illustrated in FIG. 17 is not different from the configuration illustrated in FIGS. 1 to 5.

  FIGS. 8 to 16 are diagrams showing still another example of the regulating member 47 and a configuration related thereto. The regulating member 47 shown in FIG. 8 is also located opposite to the outlet 3B of the solid-liquid separation unit 3 and regulates the amount of sludge discharged from the outlet 3B, similarly to the regulating member shown above. Thus, the pressure in the solid-liquid separation unit 3 is increased, and the dewatering efficiency for the sludge in the solid-liquid separation unit 3 is increased.

  Further, as shown in FIGS. 8 and 11, the restricting member 47 is also formed in a disk shape positioned opposite to the outlet 3 </ b> B of the solid-liquid separation unit 3, and a tubular cover 54 is provided on the restricting member 47. It is fixed to one piece. A sliding member 56 is fitted and fixed to the center hole 55 of the restricting member 47 by bolts and nuts (not shown). The sliding member 56 is also formed of a resin ring. The shaft 41 is slidably fitted in the axial direction. As a result, the regulating member 47 is supported by the shaft 41 so as to be movable in a direction approaching or separating from the outlet 3B of the solid-liquid separation unit 3 as indicated by an arrow E in FIG.

  Further, as will be described later, the regulating member 47 is also assembled so as not to rotate relative to the shaft 41 of the screw 21 so as to rotate together with the screw 21.

  Furthermore, as shown in FIGS. 8 and 11, the solid-liquid separation device of this example is also provided with a biasing means 57 that pressurizes the regulating member 47 toward the outlet 3 </ b> B of the solid-liquid separation unit 3. The biasing means 57 is disposed between a spring receiver 61 fixed to the shaft 41 of the screw 21 in a manner to be described later, and between the spring receiver 61 and the regulating member 47, so that the regulating member 47 is moved to the solid-liquid separation unit 3. And a pressure spring 62 that pressurizes toward the outlet 3B. In the spring receiver 61, the hole 16 formed in the center thereof is fitted to the shaft 41 of the screw 21 so as to be movable in the axial direction. On the other hand, it is fixed in the axial direction and cannot rotate with respect to the shaft 41. Also in this case, the pressure spring 62 is constituted by a compression coil spring, and a plurality of pressure springs 62 are used, but a pressure spring made of a plate spring or the like can also be used. The pressure spring 62 is covered with a cylindrical cover 54 fixed to the regulating member 47, and sludge enters the pressure spring 62, thereby preventing a problem that the function of the spring 62 is impaired.

  As shown in FIGS. 8 and 11, connection bolts 63 extending through the pressure springs 62 are provided, and the connection bolts 63 can slide through the through holes 64 formed in the spring receiver 61. The head 63 </ b> A of the connecting bolt 63 is in contact with the surface 15 of the spring receiver 61. Moreover, the male screw of each connecting bolt 63 is screwed into a screw hole 65 formed in the restricting member 47, and a nut 66 is screwed into each male screw and is tightened. As described above, the restricting member 47 is connected to the spring receiver 61 fixed to the shaft 41 of the screw 21 by the connecting bolt 63 and the nut 66 which are an example of connecting means. Thereby, when the screw 21 rotates during the operation of the solid-liquid separator, the regulating member 47 rotates together with the screw 21, and the sludge having a reduced moisture content passes through the outlet 3 </ b> B of the solid-liquid separator 3. It can be efficiently discharged outside.

  Even with the above-described configuration, as described below, the same operation as that of the regulating member shown in FIGS. 1, 6, and 17 can be achieved.

  That is, immediately after the start of the operation of the solid-liquid separator, or when the moisture content of the sludge sent into the solid-liquid separator 3 becomes high and the pressure in the solid-liquid separator 3 becomes low, the solid-liquid separator 3 Since the pressure applied to the regulating member 47 by the sludge discharged from the outlet 3B as shown by the arrow D in FIG. 8 is reduced, the regulating member 47 pressurized by the pressure spring 62 is separated from the solid-liquid separator 3. The gap GA (FIG. 8) between the regulating member 47 and the outlet 3B becomes narrower. For this reason, the quantity of the sludge discharged | emitted from the exit 3B reduces, and the pressure in the solid-liquid separation part 3 rises. Thereby, the fall of the dewatering efficiency with respect to sludge is prevented.

  Conversely, when the moisture content of the sludge sent to the solid-liquid separation unit 3 decreases and the pressure in the solid-liquid separation unit 3 increases, the pressure applied to the regulating member 47 by the sludge discharged from the outlet 3B increases. Therefore, the regulating member 47 moves in a direction away from the outlet 3B of the solid-liquid separator 3 against the pressurizing action of the pressure spring 62, and the gap GA between the regulating member 47 and the outlet 3B is enlarged. For this reason, the quantity of the sludge discharged | emitted from the exit 3B increases, and the pressure in the solid-liquid separation part 3 falls. Thereby, the malfunction that the solid sludge which became low in moisture content becomes clogged in the solid-liquid separation part 3 can be prevented.

  When the regulating member 47 moves in the direction approaching or separating from the outlet 3 </ b> B, each connecting bolt 63 fixed to the regulating member 47 moves together with the regulating member 47, and the through hole 64 formed in the spring receiver 61. Slide inside. In FIG. 8, the state when the connecting bolt 63 is farthest from the outlet 3B is indicated by a virtual line.

  As described above, also in the solid-liquid separation device of this example, the regulating member 47 occupies an appropriate position with respect to the outlet 3B of the solid-liquid separation unit 3 according to the pressure in the solid-liquid separation unit 3, and is high against sludge. It is possible to prevent a problem that sludge is solidified and clogged in the solid-liquid separation unit 3 while maintaining the dehydration efficiency. The same applies to the case of subjecting a processing object other than sludge to a liquid removal process.

  Incidentally, the solid-liquid separator shown in FIGS. 8 to 16 also includes a spring force adjusting means for adjusting the spring force of the pressure spring 62. The configuration will be clarified below.

  This spring force adjusting means includes the above-described connecting bolt 63 that extends over the spring receiver 61 and the regulating member 47 and extends substantially parallel to the shaft 41 of the screw 21. As described above, the connecting bolt 63 is screwed to one member (the restricting member 47 in the illustrated example) of the restricting member 47 and the spring receiver 61, and the other member (the spring receiver 61 in the illustrated example). ) Is slidably fitted. Moreover, the head 63A of the connecting bolt 63 is in contact with the surface 15 of the other member (spring receiver 61) opposite to the side facing the one member (regulating member 47). Instead of bringing the head 63A of the connecting bolt 63 into contact with the surface 15, a nut (not shown) screwed to the connecting bolt 63 may be brought into contact with the surface 15. Here, when the connecting bolt 63 is rotated after loosening the nut 66, one member screwed to the male screw of the connecting bolt 63, that is, the regulating member 47 moves in the axial direction with respect to the connecting bolt 63. Thereby, the space | interval between the control member 47 and the spring receiver 61 is changed, and the spring force of the pressurization spring 62 is adjusted. In this way, the spring force of the pressure spring 62 can be easily adjusted to match the characteristics of the object to be treated or to change the moisture content of the sludge after dehydration.

  The solid-liquid separation device of this example also fixes the spring receiver 61 to the shaft 41 of the screw 21 and moves the spring receiver 61 in the axial direction with respect to the shaft 41 of the screw 21 as necessary. Spring receiving position adjusting means is provided to allow this to be done. As a result, in the unlikely event that the processing object is solidified and clogged in the solid-liquid separation unit 3, the processing object can be easily scraped out from the outlet 3B of the solid-liquid separation unit 3. Hereinafter, a specific configuration of the spring receiving position adjusting means will be clarified.

  As shown in FIGS. 8 to 11, a ring-shaped first toothed member 87 located adjacent to the spring receiver 61 is fitted to the shaft 41 of the screw 21, and the first toothed member 87 is connected to the first toothed member 87. A second toothed member 88 located adjacent to the shaft 41 is fitted. The first toothed member 87 is disposed opposite to the outlet 3B of the solid-liquid separation unit 3 with the spring receiver 61 interposed therebetween, and the second toothed member 88 is sandwiched with the first toothed member 87 interposed therebetween. It is disposed opposite to the outlet 3B of the solid-liquid separation unit 3. The second toothed member 88 is fixed to the shaft 41 of the screw 21 as will be described later. As shown in FIGS. 8 to 10, the shaft 41 of the screw 21 is composed of a hollow pipe 95 and an end member 96 welded to the end of the pipe 95, and the second toothed member 88 is a shaft 41. The end member 96 is fitted. The first and second toothed members 87 and 88 have teeth formed on opposite sides thereof, which will be described later.

  As shown in FIGS. 8 to 10, the second toothed member 88 fixed to the shaft 41 of the screw 21 is attached to the bearing member 18 fixed to the side wall 20 of the outlet member 2 by bolts 24 and nuts 25. It is supported rotatably. Thus, in the solid-liquid separator of this example, the shaft 41 of the screw 21 is rotatably supported by the bearing member 18 via the second toothed member 88.

  The first toothed member 87 is fitted to the shaft 41 of the screw 21 so as to be rotatable with respect to the shaft 41 of the screw 21 and movable in the axial direction of the screw 21. As shown in FIG. 9 and FIG. 9, the plurality of fixing bolts 89 screwed to the first toothed member 87 are tightened, and the tip surfaces of the fixing bolts 89 are brought into pressure contact with the surface of the shaft 41, thereby A tooth member 87 is fixed to the shaft 41. By loosening the fixing bolt 89, the fixed state of the first toothed member 87 with respect to the shaft 41 can be released. Thus, the fixing bolt 89 constitutes an example of a toothed member fixing member that fixes the first toothed member 87 to the shaft 41 of the screw 21 or releases the fixed state.

  Further, as shown in FIGS. 8 to 11, a fixing ring 90 is fitted to the outer peripheral portion of the second toothed member 88. As shown in FIGS. A fixed ring bolt 91 passes through the toothed member 88 and the shaft 41 of the screw 21 in the diameter direction, and a nut 92 is screwed onto a male screw of the fixed ring bolt 91 to be tightened. Thereby, the second toothed member 88 is fixed to the shaft 41 of the screw 21, and the fixing ring 90 is also fixed to the second toothed member 88. The fixing ring 90 and the second toothed member 88 include a fixing ring bolt 91 passing through the fixing ring 90, the second toothed member 88, and the shaft 41 of the screw 21 in the diametrical direction, and the fixing ring bolt. The nut 92 is fixed to the shaft 41 of the screw 21 by a nut 92 that is screwed and fastened to the shaft 91.

  At this time, if the second toothed member 88 is fixed to the shaft 41 of the screw 21 with only the fixing ring bolt 91 and the nut 92, the second toothed member 88 may slightly rattle with respect to the shaft 41. There is. Therefore, in the solid-liquid separation device of this example, as shown in FIGS. 8 to 10, the second toothed member 88 is formed with a screw hole 93 extending in the axial direction of the shaft 41, and this screw hole 93. The toothed member bolt 94 is screwed and tightened, and the tip surface of the toothed member bolt 94 is in pressure contact with the end surface of the shaft 41. Further, a nut 97 for preventing the loosening is screwed onto the toothed member bolt 94. Thereby, the malfunction which the 2nd toothed member 88 rattles with respect to the axis | shaft 41 can be prevented. Thus, the shaft 41 of the screw 21 is screwed by the bolt 94 for the toothed member that is screwed in the axial direction with respect to the second toothed member 88 and whose tip surface is in pressure contact with the end surface of the shaft 41 of the screw 21. The rattling of the second toothed member 88 is prevented.

  As shown in FIG. 10, the fixing ring 90 and the spring receiver 61 are connected by a plurality of bolts 98 which are an example of a connecting member. These bolts 98 extend parallel to the axis 41 of the screw 21, and the male threads thereof are screwed into the female threads of the screw holes 99 formed in the fixing ring 90. Further, these bolts 98 are A spring 105 is slidably fitted in a hole 105 formed in the spring receiver 61. Further, a nut 100 for preventing loosening of the bolt 98 is screwed onto the male screw of these bolts 98 and tightened. In this way, the connecting member made of the bolt 98 firmly connects the spring receiver 61 and the fixing ring 90 so that the spring receiver 61 rotates together with the fixing ring 90 when the screw 21 rotates. The spring receiver 61 is prevented from rotating with respect to the shaft 41. In addition, during operation of the solid-liquid separator, the pressure due to sludge in the solid-liquid separator 3 acts on the spring receiver 61 via the regulating member 47 and the pressurizing spring 62, so that the spring receiver 61 is fixed to the shaft 41. The first toothed member 87 is in strong pressure contact with the end face 102. In this way, the spring receiver 61 is fixed with respect to the shaft 41 of the screw 21.

  After the nut 100 is loosened and the bolt 98 is rotated, a spacer (not shown) formed in a ring shape, for example, is interposed between the end face 102 of the first toothed member 87 and the spring receiver 61. The spring force of the pressure spring 62 can be adjusted.

  On the other hand, FIGS. 13 and 14 are perspective views showing the arrangement state of the first and second toothed members 87 and 88, and FIGS. 15 and 16 show the arrangement state of these toothed members 87 and 88. FIG. In these drawings, illustration of the fixing bolt 89, the bolt 91, the nut 92, and the hole through which these bolts are screwed or inserted is omitted.

  As shown in FIGS. 13 to 16, a plurality of teeth 103 and 104 are formed on opposite sides of the first toothed member 87 and the second toothed member 88, respectively. Normally, as shown in FIGS. 13 and 15, the tip of the tooth 103 of the first toothed member 87 fixed to the shaft 41 of the screw 21 by the fixing bolt 89 shown in FIG. The first and second toothed members 87 and 88 are fitted to the shaft 41 of the screw 21 in a state where the tips of the teeth 104 of the fixed second toothed member 88 are in contact with each other. In this state, as described above with reference to FIG. 1, the screw 21 is rotationally driven by the motor, the sludge is supplied to the solid-liquid separator 3, and the solid-liquid separation operation of the sludge is performed.

  On the other hand, in the unlikely event that the sludge is solidified and clogged in the solid-liquid separator 3, the motor shown in FIG. 1 is stopped and the fixing bolt 89 shown in FIG. This is turned to loosen, and the fixed state of the first toothed member 87 with respect to the shaft 41 of the screw 21 is released. The first toothed member 87 can be rotated and slidable with respect to the shaft 41.

  Next, as shown by an arrow F in FIGS. 13 and 15, the first toothed member 87 is rotated around the shaft 41. At this time, since the pressure in the solid-liquid separation unit 3 shown in FIG. 8 is increased, the regulating member 47 is pressed toward the spring receiver 61 by the internal pressure, and accordingly, the spring receiver 61 is also applied. The pressure is applied via the pressure spring 62 and is pressed toward the first toothed member 87. As a result, the first toothed member 87 is pressed by the spring receiver 61, and the teeth 103 of the first toothed member 87 are moved to the second toothed member 88 as shown in FIGS. The first toothed member 87 meshes with the teeth 104 and moves along the shaft 41 of the screw 21 in a direction away from the outlet 3 </ b> B of the solid-liquid separation unit 3. Along with this movement, the spring receiver 61 and the regulating member 47 also move away from the outlet 3B, so that the gap GA between the outlet 3B and the regulating member 47 is greatly enlarged. Thereby, the stick | rod etc. which are not shown in figure from the exit 3B can be plunged, and the sludge clogged in the solid-liquid separation part 3 can be scraped out.

  After the scraping operation is finished, the first toothed member 87 is rotated again in the direction opposite to the arrow F, and the tip of the tooth 103 of the first toothed member 87 and the second toothed member 88 are rotated. The first toothed member 87 is fixed to the shaft 41 with the fixing bolt 89, and the regulating member 47 and the spring receiver 61 are returned to a predetermined position.

  In the solid-liquid separator shown in FIG. 8, as described above, the nut 66 screwed to the connecting bolt 63 is loosened with a tool, and then the connecting bolt 63 is rotated, whereby the regulating member 47 and the spring receiver are rotated. The spring force of the pressure spring 62 is adjusted by changing the space between the pressure member 61 and the tool 61 in the state where the regulating member 47 is close to the outlet 3B of the solid-liquid separator 3 as can be seen from FIG. It cannot be brought close to the nut 66. Therefore, as described above, the regulating member 47 is greatly separated from the outlet 3B of the solid-liquid separation unit 3 by meshing the teeth 103 of the first toothed member 87 and the teeth 104 of the second toothed member 88. By removing the sludge adhering around the nut 66, the tool is engaged with the nut 66, the nut 66 is loosened without any trouble, and then the tool is engaged with the head 63A of the connecting bolt 63. The connecting bolt 63 can be rotated.

  As described above, the spring receiving position adjusting means of this example is a ring shape that is rotatable with respect to the shaft 41 of the screw 21 and is fitted to the shaft 41 of the screw 21 so as to be movable in the axial direction of the screw 21. The first toothed member 87 and the first toothed member 87 fixed to the shaft 41 of the screw 21 or fixed for a toothed member comprising a fixing bolt 89 capable of releasing the fixed state. A member and a second toothed member 88 fixed to the screw 21, and the first toothed member 88 sandwiches the spring receiver 61 with respect to the outlet 3 </ b> B of the solid-liquid separation unit 3. The tips of the teeth 103 of the first toothed member 87 and the tips of the teeth 104 of the second toothed member 88, which are opposed to each other and are usually fixed to the shaft 41 of the screw 21 by a fixing member for toothed members The first toothed part in contact with each other 87 is fitted to the shaft 41 of the screw 21, and after releasing the fixed state of the first toothed member 87 with respect to the shaft 41 of the screw 21, the first toothed member 87 is rotated, and the first toothed member 87 is rotated. By meshing the tooth 103 of the toothed member 87 with the tooth 104 of the second toothed member 88, the first toothed member 87 is solid-liquid along the shaft 41 of the screw 21 together with the spring receiver 61. It is configured to allow movement in a direction away from the outlet 3 </ b> B of the separation unit 3.

  Other configurations of the solid-liquid separation device shown in FIGS. 8 to 16 are the same as the configurations of the solid-liquid separation device shown in FIGS.

  18 and 19 are sectional views showing still another example of the regulating member 47 and a configuration related thereto. The regulating member 47 shown here is also located opposite to the outlet 3B of the solid-liquid separation unit 3, regulates the amount of sludge discharged from the outlet 3B, increases the pressure in the solid-liquid separation unit 3, It functions to increase the dewatering efficiency of the sludge in the liquid separation unit 3. The basic configuration of the regulating member 47 is the same as that of the regulating member 47 shown in FIG. That is, the sliding member 56 fitted and fixed in the center hole 55 of the regulating member 47 shown in FIG. 18 is fitted to the shaft 41 of the screw 21 so as to be slidable in the axial direction, and thereby the regulating member 47 is moved to the arrow. As shown by E, it is supported on the shaft 41 so as to be movable in a direction approaching or separating from the outlet 3B of the solid-liquid separator 3. Also in the solid-liquid separator shown here, a spring receiver 61 fixed to the shaft 41 of the screw 21 and a plurality of pressure springs 62 pressure-fitted between the spring receiver 61 and the regulating member 47. The urging means 57 is provided, and the regulating member 47 is urged toward the outlet 3 </ b> B of the solid-liquid separation unit 3 by the pressure spring 62. As a result, the regulating member 47 occupies an appropriate position with respect to the outlet 3B of the solid-liquid separation unit 3 according to the pressure in the solid-liquid separation unit 3 in the same manner as the regulation members of the respective types described above, and against sludge While maintaining high dehydration efficiency, it is possible to prevent a problem that sludge is solidified and clogged in the solid-liquid separator 3. A cylindrical cover 54 is also integrally fixed to the regulating member 47 shown in FIG.

  Further, the solid-liquid separation device shown in FIG. 18 also has connection bolts 63 extending through the pressure springs 62, and one end of each connection bolt 63 passes through the spring receiver 61, The head 63 </ b> A contacts the surface 15 of the spring receiver 61, and a male screw formed at the other end of the connecting bolt 63 is screwed into a screw hole 65 formed in the restricting member 47. Thereby, when the screw 21 rotates during operation of the solid-liquid separator, the regulating member 47 rotates together with the screw 21. The shaft 41 of the screw 21 of the solid-liquid separator shown in FIG. 18 is directly supported by the bearing member 18 fixed to the outlet member 2 so as to be freely rotatable.

  When adjusting the spring force of the pressurizing spring 62, the nut 66 is loosened and the connecting bolt 63 is rotated, just like the solid-liquid separator shown in FIG. , The spring force of each pressure spring 62 is adjusted. As described above, the solid-liquid separation device shown in FIG. 18 has spring force adjusting means configured in the same manner as the spring force adjusting means shown in FIG.

  Further, the solid-liquid separation device shown in FIG. 18 is also provided with spring receiving position adjusting means, and the configuration and action thereof are as follows.

  As shown in FIG. 18, a screw member 110 formed in a cylindrical shape is fitted to the shaft 41 of the screw 21 so as to be rotatable and movable in the axial direction of the shaft 41. A male screw 111 is formed on the outer peripheral surface of the screw member 110. The hole 16 formed at the center of the spring receiver 61 is fitted to the outer peripheral surface of the screw member 110, and the female screw 112 formed on the inner peripheral surface of the hole 16 is screwed to the male screw 111 of the screw member 110. Is engaged. Although the screw member 110 is rotatable with respect to the shaft 41 of the screw 21, the screw member 110 can be fitted so as not to move in the axial direction of the shaft 41.

  Further, a fixing bolt 113 is screwed onto the screw member 110. Normally, the fixing bolt 113 is tightened and the tip end surface of the bolt 113 is brought into pressure contact with the surface of the shaft 41. The shaft 41 can be fixed so as not to rotate with respect to the shaft 41. By loosening the fixing bolt 113, the fixing state of the screw member 110 with respect to the shaft 41 is released, and the screw member 110 can rotate with respect to the shaft 41. Thus, the fixing bolt 113 fixes the screw member 110 with respect to the shaft 41 of the screw 21 or releases the fixed state so that the screw member 110 does not rotate with respect to the shaft 41 of the screw 21. The screw member 110 is an example of a screw member fixing member that allows the screw member 110 to rotate with respect to the shaft 41 of the screw 21.

  As described above, since the screw member 110 is normally fixed to the shaft 41, the spring receiver 61 that is screw-engaged with the male screw 111 of the screw member 113 is also fixed to the shaft 41 in the axial direction. Is done.

  Further, in the solid-liquid separator shown in FIG. 18, as in the solid-liquid separator shown in FIG. 17, the fixing ring 114 is fitted to the shaft 41 of the screw 21, and the fixing ring 114 is connected to the fixing ring 114. 114 and a bolt 115 extending through the shaft 41 and a nut (not shown) that is screwed and tightened to a male screw of the bolt 115 and is fixed to the shaft 41. As shown in FIG. 19, the fixing ring 114 and the spring receiver 61 are connected by a bolt 116 that is an example of a connecting member. The bolt 116 extends parallel to the shaft 41 of the screw 21, a male screw formed at one end thereof is screwed into a screw hole 117 formed in the fixing ring 114, and the other end side of the bolt 116 is a spring receiver 61. Is slidably fitted in the hole 118 formed in Further, a nut 119 for locking the bolt 116 is screwed onto the male screw of the bolt 116 and tightened. The bolt 116 connects the fixing ring 114 and the spring receiver 61 so that the spring receiver 61 rotates together with the fixing ring 114 fixed to the shaft 41 when the screw 21 rotates. The spring receiver 61 is prevented from rotating with respect to the shaft 41. In the state shown in FIGS. 18 and 19, the screw member 110 fixed to the shaft 41 is in contact with a fixing ring 114 that is also fixed to the shaft 41. As shown in FIG. 18, a plurality of tool engagement holes 120 arranged in the circumferential direction are formed on the outer peripheral surface of the screw member 110.

  Here, if sludge is solidified and clogged in the solid-liquid separator 3, the motor shown in FIG. 1 is stopped and the fixing bolt 113 shown in FIG. After releasing the fixed state of the screw member 110 with respect to the shaft 41 of 21, a tool (not shown) is engaged with any of the tool engagement holes 120 formed in the screw member 110 to rotate the screw member 130. . As a result, the spring receiver 61 moves away from the outlet 3B of the solid-liquid separator 3, and the regulating member 47 also moves along the shaft 41 in the same direction. If the spring receiver 61 moves to a position where it comes into contact with the surface 121 of the screw member 110 in this way, the gap GA between the outlet 3B and the regulating member 47 is greatly enlarged. As a result, a rod (not shown) can be inserted from the outlet 3B to scrape out the sludge clogged in the solid-liquid separation unit 3, thereby cleaning the inside of the solid-liquid separation unit 3. After this cleaning operation is completed, the screw member 110 is rotated in the opposite direction to that described above, whereby the regulating member 47 and the screw receiver 61 are moved to the outlet 3B side of the solid-liquid separation unit 3, and the outlet 3B and the regulating member. 47, the gap GA between them can be set to an appropriate size. Next, the fixing bolt 113 is rotated to fix the screw member 110 to the shaft 41.

  As described above, the spring receiving position adjusting means of the present example includes the screw member 110 that is rotatably fitted to the shaft 41 of the screw 21 and has the male screw 111 formed on the outer peripheral surface, and the screw member 110 includes A fixing bolt that allows the screw member 110 to rotate with respect to the shaft 41 of the screw 21 by fixing the screw member 110 so as not to rotate with respect to the shaft 41 of the screw 21 or releasing the fixed state. The screw member 110 includes a screw member fixing member 113. The screw member 110 is fitted with the hole 16 formed in the spring receiver 61, and the female screw 112 formed on the inner peripheral surface of the hole 16 is screwed. After engaging the male screw 111 of the member 110 and releasing the fixed state of the screw member 110 with respect to the shaft 41 of the screw 21, the spring receiver 61 is rotated by rotating the screw member 110. With respect to the axis 41 of the clew 21, and it is configured to move in the axial direction. The spring receiver 61 can be fixed to the shaft 41 of the screw 21 by the spring receiver position adjusting means, and the spring receiver 61 moves in the axial direction with respect to the shaft 41 of the screw 21 as necessary. Can be tolerated.

  18 also includes a fixing ring 114 fixed to the shaft 41 of the screw 21 and the fixing ring 114 so that the spring receiver 61 rotates together with the fixing ring 114 when the screw 21 rotates. And the connecting member for connecting the spring receiver 61, the spring receiver 61 can be rotated integrally with the screw 21 without any trouble.

  In the solid-liquid separator shown in FIG. 18, as described above, the nut 66 screwed to the connecting bolt 63 is loosened with a tool, and then the connecting bolt 63 is rotated to thereby adjust the regulating member 47. The spring force of the pressure spring 62 can be adjusted by changing the distance between the spring receiver 61, but as can be seen from FIG. 18, when the regulating member 47 is close to the outlet 3B of the solid-liquid separator 3, the tool is moved. It cannot be brought close to the nut 66. Therefore, as described above, by rotating the screw member 110, the regulating member 47 is largely separated from the outlet 3 </ b> B of the solid-liquid separator 3, and the sludge adhered around the nut 66 is removed. If the tool is engaged, the nut 66 can be loosened without hindrance, and then the connecting bolt 63 can be rotated.

  The above-mentioned point is the same in the solid-liquid separator shown in FIG. 8, but in the configuration shown in FIG. 8, in order to adjust the spring force of the pressure spring 62, the regulating member 47, the spring receiver 61, When the regulating member 47 is brought near the outlet 3B of the solid-liquid separator 3 as shown in FIG. 8, the size of the gap GA between the outlet 3B and the regulating member 47 is changed. It will change with respect to the magnitude | size of the clearance gap GA before spring force adjustment. For this reason, the size of the gap GA after adjusting the spring force becomes too large, or conversely becomes too narrow, and the dewatering efficiency with respect to the sludge is reduced, or the sludge is solidified and clogged in the solid-liquid separation unit 3. There is a risk that.

  On the other hand, in the solid-liquid separator shown in FIG. 18, the screw member 110 is rotated so that the regulating member 47 is largely separated from the outlet 3 </ b> B of the solid-liquid separator 3, and then the connecting bolt 63 is rotated. Then, the spring force of the pressure spring 62 is adjusted, and then the screw member 110 is rotated in the reverse direction to move the regulating member 47 to the vicinity of the outlet 3B. Therefore, by adjusting the amount of rotation of the screw member 110 The size of the gap GA between the regulating member 47 and the outlet 3B can be set to an appropriate size before adjusting the spring force. As described above, according to the solid-liquid separator shown in FIG. 18, the spring force can be adjusted appropriately, and the gap between the regulating member 47 and the outlet 3 </ b> B can be set to an appropriate size. In this way, the most efficient solid-liquid separation operation can be performed in accordance with the characteristics of the object to be processed. Other configurations of the solid-liquid separator shown in FIGS. 18 and 19 are the same as those shown in FIGS.

  As described above, the solid-liquid separation apparatus including the solid-liquid separation unit 3 having the many fixed plates 28 and the many movable plates 29 and operating the movable plate 29 by the rotation of the screw 21 has been described. The present invention can be widely applied to a solid-liquid separation apparatus provided with another appropriate type of solid-liquid separation unit. For example, it has a solid-liquid separation device in which the movable plate is driven not by a screw but by an independent drive device, a solid-liquid separation device in which a plurality of movable plates are provided between adjacent fixed plates, and a large number of movable plates. However, the present invention can also be applied to a solid-liquid separation device that does not have a fixed plate, a solid-liquid separation device in which a large number of filtrate discharge holes are formed as filtrate discharge portions on the peripheral wall of the cylindrical body, and the like. . Further, the present invention can be applied to a solid-liquid separation device provided with a plurality of screws.

It is a partial cross section front view of a solid-liquid separator. It is a disassembled perspective view of the solid-liquid separator which shows an adjacent fixed plate and the movable plate etc. which were arrange | positioned between the both fixed plates. It is a longitudinal cross-sectional view of a solid-liquid separation part. It is explanatory drawing which shows the arrangement | positioning state of a fixed plate, a movable plate, a spacer, and a stay bolt. It is a perspective view which shows the structure regarding the connection of the shaft of an output shaft and a screw. FIG. 2 is an enlarged cross-sectional view of a regulating member shown in FIG. 1 and members related thereto. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. 11 which shows the control member of another solid-liquid separator, and the member relevant to this. It is the IX-IX sectional view taken on the line of FIG. It is the XX sectional view taken on the line of FIG. It is the XI-XI sectional view taken on the line of FIG. It is the figure seen in the arrow XII direction of FIG. It is a perspective view which shows the arrangement | positioning state of a 1st and 2nd toothed member. It is a perspective view which shows a state when the teeth of the 1st and 2nd toothed member mutually meshed | engaged. FIG. 14 is a development view of the first and second toothed members when the first and second toothed members are in the state shown in FIG. 13. FIG. 15 is a development view of the first and second toothed members when the first and second toothed members are in the state shown in FIG. 14. It is sectional drawing similar to FIG. 8 which shows the control member of another solid-liquid separator, and the member relevant to this. Furthermore, it is sectional drawing similar to FIG. 8 which shows the control member of another solid-liquid separator, and the member relevant to this. It is sectional drawing which shows the connection bolt which connects the fixing ring and spring receiver of the solid-liquid separator shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Solid-liquid separation part 3B Outlet 15 Surface 16 Hole 21 Screw 47 Restriction member 54 Cover 57 Energizing means 61 Spring receiving 61A Spring receiving member 62 Pressure spring 63 Connection bolt 63A Head 87 First 1st toothed member 88 2nd Toothed member 90 Fixing ring 91 Bolt for fixing ring 92 Nut 94 Bolt for toothed member 103,104 Tooth 110 Screw member 111 Male screw 112 Female screw 114 Fixing ring

Claims (14)

While rotating the screw arranged in the solid-liquid separation unit to move the processing object entering the solid-liquid separation unit toward the outlet of the solid-liquid separation unit, the filtrate separated from the processing object is removed. A solid-liquid separation device for discharging the processing object having a reduced liquid content from the outlet to the outside of the solid-liquid separation unit through the filtrate discharge unit of the solid-liquid separation unit, Solid-liquid separation having a regulating member that is positioned opposite to the outlet of the solid-liquid separation unit and increases the pressure in the solid-liquid separation unit by regulating the amount of the processing object discharged from the outlet In the device
The regulating member is movably supported in a direction approaching or separating from the outlet of the solid-liquid separation unit, and an urging unit that pressurizes the regulating member toward the outlet of the solid-liquid separation unit is provided. A solid-liquid separator characterized by that. The solid-liquid separator according to claim 1, wherein the regulating member is assembled to a shaft of the screw so as to rotate together with the screw. The biasing means is disposed between a spring receiver fixed to the screw shaft and between the spring receiver and the restricting member, and pressurizes the restricting member toward the outlet of the solid-liquid separator. The solid-liquid separator according to claim 1, further comprising a pressure spring. The solid-liquid separator according to claim 3, wherein a cylindrical cover that covers the pressure spring is fixed to the regulating member. 5. The solid-liquid separation according to claim 3, wherein the spring receiver is detachably fitted to the shaft of the screw and includes a plurality of spring receiving members arranged in the axial direction of the shaft. apparatus. The solid-liquid separator according to claim 3, further comprising a spring force adjusting unit that adjusts a spring force of the pressure spring. The spring force adjusting means includes a connecting bolt that spans between the spring receiver and the restricting member and extends substantially parallel to the axis of the screw, and the connecting bolt is one of the restricting member and the spring receiver. The other member is slidably fitted to the other member, and the head of the connecting bolt or the nut screwed to the connecting bolt faces the one member. The fixed member according to claim 6, which is in contact with a surface of the other member opposite to the side, and is configured to change a distance between the restricting member and the spring receiver by rotating the connecting bolt. Liquid separation device. The spring receiver is fixed to the shaft of the screw and, if necessary, spring receiving position adjusting means for allowing the spring receiver to move in the axial direction with respect to the shaft of the screw. The solid-liquid separator according to any one of claims 3 to 7. The solid-liquid separator according to claim 8, wherein the spring receiver position adjusting means includes a spring receiver fixing member that can fix the spring receiver to the shaft of the screw or release the fixed state. The spring receiving position adjusting means includes a ring-shaped first toothed member that is rotatable with respect to the shaft of the screw and is fitted to the screw shaft so as to be movable in the axial direction of the screw; A fixed member for a toothed member capable of fixing one toothed member to the shaft of the screw or releasing the fixed state; and a second toothed member fixed to the screw. And the first toothed member is disposed opposite to the outlet of the solid-liquid separation unit with the spring receiver interposed therebetween, and is normally arranged with respect to the screw shaft by the toothed member fixing member. The first toothed member is fitted to the shaft of the screw in a state where the tooth tip of the fixed first toothed member and the tooth tip of the second toothed member are in contact with each other. And a fixed shape of the first toothed member with respect to the shaft of the screw The first toothed member is rotated by rotating the first toothed member and meshing the teeth of the first toothed member with the teeth of the second toothed member. The solid-liquid separator according to claim 8, wherein the solid-liquid separator is configured to allow movement along the axis of the screw in a direction away from the outlet of the solid-liquid separator along with the spring receiver. A fixing ring that fits to the outer peripheral portion of the second toothed member and is fixed to the second toothed member, and the spring receiver rotates with the fixing ring when the screw rotates. The solid-liquid separator according to claim 10, further comprising a connecting member that connects the spring receiver and the fixing ring. The fixing ring and the second toothed member are screwed to the fixing ring bolt and the fixing ring bolt that diametrically penetrates the fixing ring, the second toothed member, and the screw shaft. And is fixed to the shaft of the screw by a tightened nut, and is screwed to the second toothed member in the axial direction so that the tip surface is pressed against the end surface of the screw shaft. The solid-liquid separation device according to claim 11, wherein rattling of the second toothed member with respect to the shaft of the screw is prevented by the bolt for toothed member. The spring receiving position adjusting means includes a screw member that is rotatably fitted to the shaft of the screw and has an external thread formed on an outer peripheral surface thereof, and prevents the screw member from rotating with respect to the shaft of the screw. A fixing member for a screw member that fixes the screw member or releases the fixing state and allows the screw member to rotate with respect to the shaft of the screw. And the internal thread formed on the inner peripheral surface of the hole engages with the external thread of the screw member to release the fixed state of the screw member with respect to the shaft of the screw. The solid-liquid separator according to claim 8, wherein the spring receiver is configured to move in the axial direction with respect to a shaft of the screw by rotating a member. A fixing ring fixed to the shaft of the screw, and a connecting member for connecting the fixing ring and the spring receiver so that the spring receiver rotates together with the fixing ring when the screw rotates. 14. The solid-liquid separation device according to 13.

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