JP3004561U - Screw dehydrator - Google Patents

Abstract

(57) [Summary] [Purpose] In a screw dehydrator for "go" that is heated by adding water to ground soybeans, which is the raw material of tofu, we aim to improve the compression dehydration efficiency of this "go", And prevent the abrasion and damage of the dehydration cylinder. [Structure] Summit land 4a of spiral blade 4 of screw 2
The concave groove 5 is provided over the entire length thereof. This groove 5
A packing 6 having a circular cross section and made of a wire material of polytetrafluoroethylene is fitted therein. A part of the packing 6 is projected from the groove 5, and the packing 6 is elastically contacted with the inner wall surface of the dehydrating cylinder 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screw dehydrator that squeezes various water-containing substances to dehydrate them. Among these, for example, a soybean ground product obtained by adding water to a ground soybean that is a raw material of tofu and heating it, and a so-called "go" dehydrated and filtered, are suitable for use in obtaining soymilk.

[0002]

[Prior art]

 A screw dehydrator of this kind is known, for example, from Japanese Utility Model Publication No. 55-46395, and is formed by a tapered dehydrating cylinder (screen) and a taper inside the dehydrating cylinder toward the front end thereof. And a drive mechanism for driving the screw to rotate. In such a conventional general screw dewatering machine, a considerable gap is actually provided between the mountain top land of the spiral blade of the screw and the inner wall surface of the dewatering cylinder. This gap tends to expand with use, and dehydration efficiency decreases as the gap expands.Therefore, the proximal end side of the screw core shaft is hit with a hammer to push it toward the distal end side. Fine-tuned.

[0003]

[Problems to be solved by the device]

 When a water-containing substance as a material to be dehydrated, for example, the above-mentioned "go" is to be filtered, it is the first time for the applicant of the present invention to improve the compression dehydration efficiency by reducing the gap to zero, and it has been well-received in the field. ing. In that case, the top land of the screw blade of the screw makes direct frictional contact with the inner wall surface of the porous dehydration cylinder between the metal materials, so that the dehydration cylinder is prone to wear and damage in a short period of time. There is. Further, when a gap synergistically occurs between the mountain top land and the dehydration cylinder due to the wear, it is necessary to frequently perform a troublesome work of re-adjusting the gap to zero. In order to ensure the ideal compression dehydration efficiency for the above "go", it is necessary to repeat the work of adjusting the gap to zero every 3 days when fully operated. The reality is that it must be broken and replaced. In addition, when adjusting the clearance, the drive system on the base end side of the screw core shaft must be disassembled and tapped with a hammer. It was In addition, when the "go" is filtered, the "okara" of squeezed waste is discharged from the discharge port at the tip of the dehydration tube, but this "okara" tends to be clogged around the discharge port. You need to clean it often. However, conventionally, a lid (cone) for adjusting the dehydration is provided at the discharge port. This lid is passed through a shaft protruding from the tip of the screw core shaft, and the cone is attached by a compression coil spring mounted on the shaft. Is a mounting form that presses and urges toward the discharge port. Therefore, when cleaning the area around the discharge port, the compression coil spring, cone, etc. had to be disassembled and removed, and this cleaning work was very troublesome.

An object of the present invention is to obtain a screw dehydrator capable of improving the squeezing and dewatering efficiency of the material to be dewatered, especially the “go”. An object of the present invention is to obtain a screw dehydrator capable of preventing wear and damage of a dehydrating cylinder and improving durability. An object of the present invention is to obtain a screw dehydrator that can easily perform the zero adjustment work of the gap. An object of the present invention is to obtain a screw dehydrator having a good workability in assembling means for preventing wear and damage of the dehydration cylinder. An object of the present invention is to obtain a screw dehydrator that can significantly reduce the number of times of zero adjustment work for the clearance between the screw and the dehydration cylinder. An object of the present invention is to obtain a screw dewatering machine that can easily clean around the discharge port where the squeezed residue is discharged.

[0005]

[Means for Solving the Problems]

 The present invention according to claim 1 is, as shown in FIGS. 1 and 2, a dehydrating cylinder 16 having a large number of fine holes 17, a screw 2 provided in the dehydrating cylinder 16, and a drive mechanism for rotationally driving the screw 2. In the screw dehydrator in which the material to be dehydrated is a "go" which is obtained by adding water to a ground soybean product and heating the same, the mountain top land 4a of the spiral root 4 of the screw 2 is recessed over its entire length. A groove 5 is provided, and a packing 6 having a small friction coefficient and wear resistance is fitted in the groove 5 so that a part of the packing 6 protrudes from the groove 5 and contacts the inner wall surface of the dehydration cylinder 16. It is characterized by being. The dehydration cylinder 16 is formed in a tapered taper cylinder shape as shown in FIG. 3, and the screw 2 is formed in a tapered shape corresponding to this, and the pitch of the spiral blade 4 is gradually reduced toward the tip. The dimensions are set.

More specifically, according to the present invention as set forth in claim 3, a dehydrating cylinder 16 having a tapered taper shape having a large number of fine holes 17 and a taper inside the dehydrating cylinder 16 and tapering toward the tip thereof. In a screw dehydrator including a screw 2 that is formed in a circular shape and has a pitch gradually smaller toward the tip of the spiral blade 4, and a drive mechanism 12 that rotationally drives the screw 2. By attaching packing plates 7 and 7 along the spiral direction on both sides in the thickness direction of the mountain top land 4a of the spiral blade 4, the concave groove 5 is provided between the packing plates 7 and 7 on the mountain top land 4a. There is a packing 6 made of synthetic resin having a small friction coefficient and abrasion resistance in the groove 5, and a part of the packing 6 projects from the groove 5 and contacts the inner wall surface of the dehydrating cylinder 16. It is characterized by being fitted. The packing plates 7 and 7 are crimped from the state shown in FIG. 5 at predetermined intervals as shown in FIG. 6 to prevent the packing 6 from coming off from the concave groove 5.

In the present invention according to claim 5, as shown in FIG. 12, the packing plate 7 having the concave groove 5 on the outside is fixed to the peak land 4a of the spiral blade 4 of the screw 2, and other configurations are claimed. It is the same as the content described in Item 3. As the material of the packing 6, a synthetic resin material having excellent heat resistance, particularly having a small friction coefficient and abrasion resistance, in other words, having self-lubricating property, for example, fluorine resin, polyacetal resin, nylon resin, etc. Is mentioned. Fluorocarbon resins include polytetrafluoroethylene, polyfluoroethylene-propylene, polytrifluoroethylene chloride, and vinylidene fluoride. Among them, polytetrafluoroethylene extruded linearly is used. Optimal. Further, it is desirable to impart compressibility so that the packing 6 makes elastic contact with the inner wall surface of the dehydrating cylinder 16.

The present invention as set forth in claim 8 is directed to a dehydrating cylinder 16 having a tapered tapered tube shape having a large number of fine holes 17 as shown in FIGS. The screw 2 and the base 3a of the core shaft 3 of the screw 2 which are formed in a taper shape and whose size is gradually reduced as the pitch of the spiral blade 4 goes to the tip, are placed on the mount 1. In a screw dehydrator equipped with a bearing unit 10 that is supported in a cantilever shape and a drive mechanism 12 that rotationally drives the core shaft 3 of the screw 2, as shown in FIG. 1, on the peak land 4a of the spiral blade 4 of the screw 2, A groove 5 is provided over the entire length thereof, and a packing 6 having a small friction coefficient and wear resistance is partially protruded from the groove 5 on the inner wall surface of the dehydration cylinder 16 in the groove 5. Fit to touch As shown in FIG. 4, the bearing unit 10 is fixed on the pedestal 1 and has a bearing housing 26 having an inner hole 29 formed at one end, and the base 3a of the core shaft 3 of the screw 2 in the inner hole 29. It has a radial bearing 24 mounted on the outer circumference of the radial bearing 24 and a cylindrical slide case 27 arranged between the outer circumference of the radial bearing 24 and the inner hole 29 of the bearing housing 26. A male screw 38 is provided on the outer circumference of the slide case 27. This male screw 38 is screwed into a female screw 39 formed on the inner circumference of the inner hole 29 of the bearing housing 26, and the inner circumference of the slide case 27 is fitted and integrated with the outer circumference of the outer ring 41 of the radial bearing 24. A flange 37 is formed on the outer end of the slide case 27, and a detent member 48 for detenting the slide case 27 is provided on the flange 37 to prevent the detent lock state. Wherein the Tsu comprises on the click state freely switched.

The present invention as set forth in claim 10 is directed to a dehydrating cylinder 16 having a tapered tapered tube shape having a large number of fine holes 17 as shown in FIGS. 2 and 3, and is located in the dehydrating cylinder 16 toward the tip thereof. The screw 2 is formed in a taper shape, and is dimensioned to be gradually smaller as the pitch of the spiral blade 4 goes to the tip, and a drive mechanism 12 for rotationally driving the core shaft 3 of the screw 2. In a screw dehydrator in which the material to be dehydrated is "go", which is obtained by adding water to ground soybeans and heating the same, as shown in Fig. 1, the summit land 4a of the spiral blade 4 of the screw 2 extends over its entire length. A groove 5 is provided, and a packing 6 having a small friction coefficient and wear resistance is fitted in the groove 5 so that a part of the packing 6 projects from the groove 5 and comes into contact with the inner wall surface of the dehydrating cylinder 16. Worn and dehydrated As shown in FIG. 8, a lid 59 for opening and closing the discharge port 22 is provided on the outer end surface of the discharge port 22 provided at the tip end side of the shaft 16 so as to freely open and close about a pivot shaft 62 orthogonal to the screw core shaft 3 and swing. The base of a shaft 64 that is supported and is orthogonal to the pivot 62 is fixed on the outer end surface of the discharge port 22, and the operating lever 65 is moved to the shaft 64 in the axial direction of the shaft and around the shaft axis. The shaft 64 is swingably mounted, and a compression coil spring 67 is provided on the shaft 64. The compression coil spring 67 constantly urges the operation lever 65 toward the base of the shaft 64. A pressing roller 69 that presses the outer surface of the lid 59 is inserted into the shaft portion at the tip of the shaft so as to freely rotate around the lever shaft center. As shown in FIGS. 8 and 9, the lid 59 is formed in a convex arc surface shape in which the entire outer surface is highest near the center and gradually lowers toward the outer circumference, and the depression 59 where the pressing roller 69 falls at the highest position. The groove 72 may be provided. The packing 6 used in the screw dehydrator according to claim 8 or 10 is also made of a compressible polytetrafluoroethylene wire, and the packing 6 is in elastic contact with the inner wall surface of the dehydrating cylinder 16. Is desired.

[0010]

[Action]

 The top land 4a of the spiral blade 4 of the screw 2 does not directly contact the inner wall surface of the dehydration cylinder 16 but contacts through the packing 6. This means that there is no gap between the spiral blade 4 and the dehydration cylinder 16 due to the packing 6. When the material to be dehydrated is the above-mentioned “go”, it is introduced to the proximal end side of the dehydrating cylinder 16 and then pushed toward the distal end side by the rotation drive of the screw 2, and during this time, the soybean milk receives the squeezing action and soy milk. Is recovered through the porous dehydration cylinder 16. The "okara" of squeezed powder is pushed out from the discharge port 22 by pushing and opening the lid 59 that closes the discharge port 22 at the tip of the dehydration cylinder 16 against the compression coil spring 67.

[0011]

[Effect of device]

 According to the present invention, the peak land 4a of the spiral blade 4 of the screw 2 contacts the inner wall surface of the dehydration cylinder 16 through the packing 6 having a small friction coefficient and wear resistance, so that the spiral blade 4 and the dehydration blade are dehydrated. There is no problem even if the gap between the cylinder 16 and the cylinder 16 is zero, and the compression dehydration efficiency can be dramatically improved. In particular, when the material to be dehydrated is “go”, the recovery efficiency of soymilk is increased, which is significant. Nevertheless, due to the presence of the packing 6, the dehydration cylinder 16 is not worn or damaged and is excellent in durability. If the packing 6 itself has compressive deformability, the packing 6 will come into elastic contact with the inner wall surface of the dehydration cylinder 16. Therefore, the adjustment work for reducing the gap between the spiral blade 4 and the dehydration cylinder 16 to zero can be performed flexibly and easily, and if adjusted at the initial stage of use, the state in which the gap is reduced to zero can be maintained for a long period of time. This has the advantage that no maintenance is required for this purpose. If the packing 6 is a linear extruded product, the packing 6 can be easily attached to the groove 5 provided in the mountain land 4a of the spiral blade 4 by sequentially fitting the groove 5 over the entire length thereof from one end side. Further, the groove 5 can be easily formed on the peak land 4a by attaching the packing plate 7 to the peak land 4a of the spiral blade 4. Further, even when the wire of polytetrafluoroethylene cannot be used as the material of the packing 6, it is possible to effectively prevent the packing 6 from coming off the groove 5 by a simple means of caulking the packing plate 7. .

According to the present invention of claim 8, in addition to the above, the rotation preventing member 48 is switched to the unlocked state to make the slide case 27 rotatable, and the slide case 27 is held by the flange 37. When the screw 27 is rotated around the screw core shaft 3 in the clockwise direction or the counterclockwise direction, the slide case 27 moves forward and backward at the pitch of the male screw 38, and at the same time, the screw core shaft 3 is rotated through the radial bearing 24. Since it moves back and forth in the direction, the gap between the spiral blade 4 and the inner wall surface of the dehydrating cylinder 16 can be constantly adjusted to zero through the packing 6. After the clearance is adjusted, the locking member 48 is switched to the locked state to prevent the slide case 27 from rotating, so that the clearance can be maintained at zero. Therefore, even if there is a gap between the spiral blade 4 and the dehydrating cylinder 16 after the initial use and after a long period of use, the sliding case 27 disposed between the radial bearing 24 and the bearing housing 26 can be simply rotated. Moreover, it is possible to surely adjust the packing 6 of the spiral blade 4 so as to contact the inner wall surface of the dehydration cylinder 16 by an easy operation.

According to the present invention as set forth in claim 10, the operating lever 65 is constantly urged by the spring pressure of the compression coil spring 67 toward the base of the shaft 64. Therefore, the pressing roller 69 provided on the operation lever 65 presses the lid 59 toward the discharge port 22 with the spring pressure at the time of use, and holds the lid 59 in the closed state. At this time, when the "Okara" of the pomace pushed out toward the discharge port 22 by the screw core shaft 3 pushes the lid 59 with a force exceeding the above-mentioned pressure, the lid 59 is opened around the pivot 62 and the "Okara" is opened. Is discharged from a gap formed between the lid 59 and the discharge port 22 to the outside. When the operating lever 65 is swung around the shaft 64 against the spring pressure of the compression coil spring 67 and the press roller 69 is rolled outward from the outer surface of the lid 59 in the radial direction, the press roller 69 is moved. The pressing force to the lid 59 is released. If the lid 59 is swung around the pivot 62 after this release, the discharge port 22 can be opened without any resistance. Therefore, the lid 59 can be easily opened in the vicinity of the pivot 62 by a simple operation of swinging the operating lever 65 acting as a lever around the shaft 64 against the spring pressure of the compression coil spring 67, The inside of the outlet 22 can be easily cleaned. In order to squeeze soy milk from the “go”, it is necessary to wash the inside with water from the point of view of food hygiene after each work, and to clean the inside of the outlet 22 where “okara” tends to remain. It is extremely significant that the work can be performed without having to disassemble the compression coil spring 67 and the like once. Since the pressing roller 69 provided at the tip of the operating lever 65 is freely rotatable, the pressing roller 69 rolls smoothly on the outer surface of the lid 59, so that the swinging operation of the operating lever 65 can be performed lightly. The entire outer surface of the lid 59 is formed in the shape of a convex arc surface that is highest near the center and gradually lowers toward the outer circumference, and since the concave groove 72 into which the pressing roller 69 falls is provided at the highest position, it is used. The pressing roller 69 can be stably stopped and held in the concave groove 72, so that the pressing roller 69 can be used with confidence.

[0014]

【Example】

 In the example shown in the figure, an example is shown in which ground soybeans, which are the raw material of tofu, are heated by adding water, and applied to a screw dehydrator used to obtain soybean milk by dehydrating and filtering so-called “go”. 2 and 3, in this screw dehydrator, a screw 2 is horizontally arranged on a pedestal 1. The screw 2 is provided with a spiral blade 4 on the outer circumference of the core shaft 3. The outer diameter of the spiral blade 4 is formed so as to gradually decrease from the base of the core shaft 3 toward the tip (rear end), and the pitches A to I of the spiral blade 4 gradually decrease toward the tip. The dimensions are set so that In FIGS. 1 and 3, a groove 5 is provided over the entire length of the mountain land 4a of the spiral blade 4, and a packing 6 is fitted in the groove 5. Specifically, by attaching packing plates 7 and 7 on both sides in the thickness direction of the mountain top land 4a of the spiral blade 4 along the spiral direction, a groove width of 4 mm is provided between the packing plates 7 and 7 on the mountain top land 4a. The concave groove 5 is formed. Each packing plate 7 is formed by forming a metal plate having a thickness of 1.5 mm in a spiral shape in advance and spot welding it along the spiral blade 4. The packing 6 is formed by extruding polytetrafluoroethylene into a linear shape and has a circular cross section with a diameter of 4 mm. The packing 6 is partially inserted into the recessed groove 5 from one end thereof (inferior arc portion). ) Are sequentially fitted so that they protrude from the groove 5. After fitting the packing 6, by using a caulking tool 9 having a V-shaped groove 8 at the lower end as shown in FIG. 5, and hitting the V-shaped groove 8 of the caulking tool 9 against the projecting edge of the packing plate 7 ・ 7, As shown in FIG. 6, the projecting edges of the packing plates 7 and 7 are firmly caulked so that they approach each other so that the packing 6 does not come off from the groove 5. As a result, the packing 6 has the superior arc portion in the concave groove 5 and the inferior arc portion protruding above the projecting edges of both packing plates 7.

In FIG. 3, a base of a core shaft 3 of the screw 2 is cantilevered on a frame 1 by a bearing unit 10, and is rotationally driven by a drive mechanism 12 having a motor 11 as a drive source. The drive mechanism 12 is constructed by winding a transmission chain 15 around a sprocket 13 fixed to the base end (front end) of the core shaft 3 of the screw 2 and a sprocket 14 on the shaft of the motor 11. 1 and 3, the outer circumference of the screw 2 is covered with a dehydrating cylinder 16 formed in a tapered tapered cylinder shape. As a result, the spiral blade 4 of the screw 2 comes into contact with the inner wall surface of the dehydrating cylinder 16 via the packing 6. Since the packing 6 has elasticity due to its material, it comes into elastic contact with the inner surface of the dehydration cylinder 16. The dehydrating cylinder 16 has fine holes 17 over the entire surface thereof and has a filtering function. The dehydration cylinder 16 is made of a 300 mesh nickel chrome steel plate, and has a plate thickness t of 0.5 to 1.0 mm and fine holes 17 having a diameter of 0.1 to 0.05 mm. In FIG. 3, flanges 19 and 20 are attached to the outer circumferences of the base end and the tip of the dehydration cylinder 16, respectively. The flange 19 on the base end side is superposed and fixed to the flange 21 on the bearing unit 10 side. A discharge flange 23 having a discharge outlet 22 is superposed and fixed on the outer end surface of the flange 20 on the front end side of the dehydration cylinder 16.

As shown in FIG. 2, the gantry 1 has a tank 50 for accommodating the “go”, which is the material to be dehydrated, disposed below the dehydration cylinder 16. The bottom opening 51 of the tank 50 and the inlet 52 on the base end side of the dehydration cylinder 16 are connected by a pipe 53, and a “go” is inside the dehydration cylinder 16 by a pump 54 interposed in the middle of the pipe 53. Pumped to. In FIG. 3, the outer circumference of the dehydration cylinder 16 is hermetically covered with a parallel-cylindrical jacket 55 to prevent intrusion of dust and germs. Both ends of the jacket 55 are closed by the flanges 19 and 20 of the dehydrating cylinder 16. In the jacket 55, soy milk obtained by filtering "go" with the dehydrating cylinder 16 is collected. The jacket 55 is provided with an air bleeding valve 56 at the upper part of the peripheral surface thereof, and an outlet 57 is provided at the lower part of the peripheral surface on the tip side, and a soymilk extracting pipe 58 is connected to the outlet 57. In FIG. 8 and FIG. 9, the outlet 22 at the tip of the dehydration cylinder 16 is openably and closably closed by a dehydration rate adjusting lid 59. The lid 59 is formed into a disc shape, and the outer peripheral surface of the lid 59 is formed into a cone that matches the conical inner peripheral surface of the discharge port 22, and the O-ring 60 is fitted into the groove provided on the outer peripheral surface of the cone. Has been. A hinge 61 is attached to the upper portion of the lid 59 by welding or the like, and the hinge 61 is pivotally mounted above the discharge port 22 on the outer end surface of the discharge flange 23 with a pivot shaft 62 orthogonal to the screw axis. Swings to open and close the outlet 22 from the outside.

The lid 59 has an opening / closing adjustment mechanism. This opening / closing adjustment mechanism has a screw hole 63 provided above the hinge 61 on the outer end surface of the discharge flange 23, and a base portion of a shaft 64 orthogonal to the pivot shaft 62 is screwed and fixed in the screw hole 63. An operating lever 65 is provided separately, a tubular boss 65a is provided at an intermediate portion in the longitudinal direction of the operating lever 65, and the tubular boss 65a is inserted into the shaft 64 so as to be movable in the axial direction of the shaft. 65 can be attached to the shaft 64 swingably around the shaft axis. On the shaft 64, the operating lever 65 is constantly urged toward the base of the shaft 64 by a compression coil spring 67 having a rectangular cross section which is arranged adjacent to the cylindrical boss 65a via a washer 66. A screw is provided at the tip of the shaft 64, and a nut 68 for adjusting the spring pressure is screwed into the screw. A pressing roller 69, which rolls on the outer surface of the lid 59 in the radial direction of the outer surface of the lid 59, is supported on the shaft portion at the tip (lower end) of the operating lever 65 so as to be freely rotatable around the lever shaft center and to be retained. The pressing roller 69 receives the spring pressure of the compression coil spring 67 and strongly presses and urges the lid 59 toward the discharge port 22.

When the “go” is squeezed and dehydrated, the discharge port 22 is closed by the lid 59 and the dehydration is adjusted. Dehydration adjustment depends on the tightness of the nut 68. At this time, the lid 59 is pressed by the pressing roller 69 to keep the discharge port 22 in the closed state. “Okara”, which is the remaining squeezed residue after dehydration, is pushed out toward the discharge port 22 at the tip by the screw 2 in the dehydration cylinder 16, and when the lid 59 is pushed with a force exceeding the pressing force of the pressing roller 69. The lid 59 is pushed open around the pivot shaft 62 against the compression coil spring 67, and "okara" is pushed out from the gap between the lid 59 and the discharge port 22. The “okara” drops and is collected on the discharge chute 70 attached to the lower outside of the discharge port 22. After each dehydration operation, water is put into the tank 50 instead of the “go” to clean the inside including the inside of the dehydration cylinder 16. At that time, “karakara” tends to remain inside the discharge port 22 and needs to be cleaned. When cleaning the discharge port 22, the operating lever 65 is rocked around the shaft 64 against the force of the compression coil spring 67. As a result, the pressing roller 69 rolls radially outward on the outer surface of the lid 59, thereby releasing the pressing force of the pressing roller 69 against the lid 59. After this pressing is released, the lid 59 can be freely swung around the pivot 62, so that the discharge port 22 can be easily opened, and the inside of the discharge port 22 is cleaned. As a means for holding the lid 59 at a predetermined opening angle, for example, as shown in FIG. 8, a magnet 71 may be fixed to the lid 59 and the magnet 71 may be attracted to the compression coil spring 67. This is convenient because it is not necessary to support the lid 59 with one hand for cleaning. It should be noted that the outer surface of the lid 59 is formed in a convex arc surface shape in which the whole is the highest near the center and gradually lowers toward the outer circumference, and the concave groove 72 into which the pressing roller 69 falls is formed at the highest position. It is provided. Thus, the pressing roller 69 can be stably stopped and held in the concave groove 72 during operation.

A gap adjusting mechanism is provided to freely adjust the gap between the spiral blade 4 of the screw 2 and the inner wall surface of the dehydrating cylinder 16. The gap adjusting mechanism will be described with reference to FIGS. 4 and 7. The bearing unit 10 encloses the radial bearing 24 and the thrust bearing 25 mounted on the base portion 3a of the core shaft 3 of the screw 2 and these bearings 24, 25. A bearing housing 26 fixed on the gantry 1 and a slide case 27 disposed between the outer circumference of the radial bearing 24 and the bearing housing 26 are provided. The bearing housing 26 includes a cylindrical portion 30 having an inner hole 29 into which the slide case 27 fits from the front, and flanges 31 and 21 attached to the front and rear ends of the cylindrical portion 30. The bearing housing 26 is fixed on the pedestal 1 in a state of being inserted into the base portion of the screw 2 via the thrust bearing 25. In the radial bearing 24, the inner ring 33 is fitted to the step portion 34 of the base portion 3a of the screw core shaft 3, the sprocket 13 is fitted to the front end of the base portion 3a of the core shaft 3 and tightened with the bolt 35, and the boss 13a of the sprocket 13 is fixed. By pressing against the outer end surface of the inner ring 33, the radial bearing 24 is fixed to the base portion 3a of the screw core shaft 3 in the inner hole 29 of the bearing housing 26.

The slide case 27 comprises a cylindrical portion 36 and a flange 37 formed at the front end of the cylindrical portion 36, and a male screw 38 is formed on the outer periphery of the cylindrical portion 36. The male screw 38 is inside the bearing housing 26. It is screwed into a female screw 39 formed in the hole 29. Further, the outer ring 41 of the radial bearing 24 is fitted to the step portion 40 on the inner periphery of the slide case 27, and the retaining ring 42 for the hole is inserted from the front to the inner periphery of the slide case 27 to stop the slide ring. By bringing the wheel 42 into contact with the outer end surface of the outer wheel 41, the outer circumference of the outer wheel 41 is fitted and integrated with the inner circumference of the sliding case 27. A grease nipple 43 is attached to the bearing housing 26 so that oil can be supplied to the thrust bearing 25 through the inner hole 29. Accordingly, an oil seal 44 is further provided between the inner circumference of the slide case 27 and the base 3a of the core shaft 3 of the screw 2, and an O-ring 45 is further provided between the bearing housing 26 and the base 3a of the screw core shaft 3. Further, an oil ring 46 is interposed between the inner hole 29 of the bearing housing 26 and the outer periphery of the slide case 27 to prevent oil leakage. The front flange 37 of the slide case 27 is arranged opposite to the front outside of the flange 31 of the bearing housing 26. A screw hole 47 is provided at one location of the flange 31 of the bearing housing 26, and a rotation stopping member 48 such as an eye bolt is screwed into the screw hole 47 and inserted. As shown in FIG. 7, the tip of the rotation preventing member 48 is removably inserted into one of a large number of holes 49 provided at a predetermined pitch on the concentric circle of the flange 37 of the slide case 27. This prevents the slide case 27 from rotating.

At this time, if a gap is formed between the packing 6 on the mountain top land 4 a of the spiral blade 4 of the screw 2 and the inner wall surface of the dehydration cylinder 16, especially after the initial test operation, the “go” is squeezed. Dewatering efficiency decreases. This situation occurs even after long-term use. In such a case, first, the anti-rotation member 48 is rotated so that the insertion tip is pulled out from the hole 49 of the flange 37 of the slide case 27, and the slide case 27 can be rotated. Then, when the slide case 27 is rotated in one direction by holding the flange 37, the slide case 27 advances at the pitch of the male screw 38, and at the same time, the screw 2 advances toward the tip side via the radial bearing 24, and the peak of the spiral blade 4 is reached. The packing 6 on the land 4a is again in elastic contact with the inner wall surface of the dehydrating cylinder 16 in a state where a part of the packing 6 is compressed and deformed. Specifically, the screw 2 is set to move about 2 mm toward the tip (rear end) side by one rotation of the slide case 27. After this clearance adjustment, the rotation preventing member 48 is rotated to pass the tip of the member 48 through the other hole 49 on the flange 37. As a result, the slide case 27 can be prevented from rotating, and the zero state of the gap can be maintained. The rotation operation of the slide case 27 is extremely easy as compared with the conventional work in which the end of the screw 2 is directly hit with a hammer or the like, and moreover, the screw 2 is still attached with the sprocket 13 and the radial bearing 24, and the discharge port. It is convenient that the 22 can be performed with the lid 59 closed.

The packing 6 may be formed to have a hollow cross section as shown in FIG. 10 so as to more positively secure its elasticity, or as shown in FIG. 11, a quadrangular shape. can do. As shown in FIG. 12, the packing plate 7 is formed into an H-shaped cross section having concave grooves 72.5 inside and outside thereof as means for forming the concave groove 5 in the mountain top land 4a of the spiral blade 4 of the screw 2. It is also possible to fit the recessed groove 72 on the inner side of the crest land 4a and perform spot welding, and fit the packing 6 in the recessed groove 5 on the outer side in a retaining manner as described above. In each of the above-mentioned embodiments, the dehydration cylinder 16 is a single type, but it may be a double type in which two or more dehydration cylinders are arranged in parallel. As described above, the proposed screw dehydrator can be similarly applied to dehydration treatment of fruits such as apples instead of dehydration of “go”. In this case, the gap between the screw 2 and the inner wall surface of the dehydration cylinder 16 can be adjusted according to the physical properties of the fruit by a simple operation of rotating the slide case 27 as described above.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main part.

FIG. 2 is an overall side view.

FIG. 3 is a vertical sectional side view of a screw portion.

FIG. 4 is a vertical sectional side view of a screw bearing portion.

FIG. 5 is a vertical cross-sectional side view of the spiral blade before the packing is caulked.

FIG. 6 is a vertical sectional side view of the spiral blade after the packing is caulked.

7 is a cross-sectional view taken along line XX in FIG.

FIG. 8 is a vertical sectional side view around a discharge port.

FIG. 9 is a rear view around the discharge port.

FIG. 10 is a vertical sectional side view of a spiral blade showing another embodiment.

FIG. 11 is a vertical sectional side view of a spiral blade showing still another embodiment.

FIG. 12 is a vertical sectional side view of a spiral blade showing still another embodiment.

[Explanation of symbols]

 1 Stand 2 Screw 3 Core Shaft 4 Spiral Blade 4a Spiral Blade Mountain Top Land 5 Recessed Groove 6 Packing 7 Packing Plate 10 Bearing Unit 12 Drive Mechanism 16 Dehydration Cylinder 17 Micro Hole 22 Discharge Port 24 Radial Bearing 26 Bearing Housing 27 Slide Case 29 Bearing Inner hole of housing 38 Male screw 39 Female screw 41 Outer ring of radial bearing 48 Anti-rotation member 59 Lid 62 Axis 64 Shaft 65 Operation lever 67 Compression coil spring 69 Press roller 72 Recessed groove

Claims (12)

[Scope of utility model registration request] 1. A dehydrating cylinder 16 having a large number of fine holes 17.
And a screw 2 provided in the dehydrating cylinder 16 and a drive mechanism 12 for rotationally driving the screw 2, and the material to be dehydrated is a "go" that is heated by adding water to a ground soybean product. In the dehydrator, a groove 5 is provided over the entire length of the mountain land 4a of the spiral blade 4 of the screw 2, and a packing 6 having a small friction coefficient and wear resistance is provided in the groove 5. Is fitted so as to project from the concave groove 5 and come into contact with the inner wall surface of the dehydrating cylinder 16. 2. The dehydration cylinder 16 is formed in a tapered taper cylinder shape, the screw 2 is formed in the dehydration cylinder 16 and is tapered toward the tip thereof, and the pitch of the spiral blades 4 is the tip. The screw dehydrator according to claim 1, wherein the screw dehydrator is sized gradually smaller as it goes to. 3. A dehydrating cylinder 16 in the form of a tapered taper having a large number of fine holes 17, a dehydrating cylinder 16 which is formed in the dehydrating cylinder 16 and is tapered toward the tip thereof, and the pitch of the spiral blades 4 is In a screw dehydrator including a screw 2 whose size is gradually reduced toward the tip, and a drive mechanism 12 for rotationally driving the screw 2, a packing is provided on both sides in the thickness direction of the peak land 4a of the spiral blade 4 of the screw 2. A groove 5 is provided between the packing plates 7 and 7 on the mountain land 4a by attaching the plates 7 and 7 along the spiral direction. The groove 5 has a small friction coefficient and wear resistance. A screw dehydrator, wherein a packing 6 made of synthetic resin having a property is fitted so that a part of the packing 6 protrudes from the concave groove 5 and contacts the inner wall surface of the dehydrating cylinder 16. 4. The screw dehydrator according to claim 3, wherein the packing plates 7 are caulked at predetermined intervals so that the packing 6 is prevented from falling out of the groove 5. 5. A dehydrating cylinder 16 in the form of a tapered taper having a large number of fine holes 17, a dehydrating cylinder 16 formed in the dehydrating cylinder 16 and tapering toward the tip thereof, and the pitch of the spiral blades 4 is In a screw dehydrator including a screw 2 whose size is gradually reduced toward the tip, and a drive mechanism 12 for rotationally driving the screw 2, a groove 5 is formed on a mountain land 4a of a spiral blade 4 of the screw 2 and has an outer groove 5 The packing plate 7 having the above is fixed, and the packing 6 made of synthetic resin having a small friction coefficient and wear resistance is partially protruded from the recessed groove 5 in the recessed groove 5 of the packing plate 7 for dehydration. A screw dehydrator, which is fitted so as to come into contact with the inner wall surface of the cylinder 16. 6. The screw dehydrator according to claim 1, 4 or 5, wherein the packing 6 is made of a fluorine-based resin wire. 7. The fluororesin that constitutes the packing 6,
7. The screw dehydrator according to claim 6, which is a polytetrafluoroethylene that is extruded into a linear shape and has compressibility, and the packing 6 makes elastic contact with the inner wall surface of the dehydrating cylinder 16. 8. A dehydrating cylinder 16 in the form of a tapered taper having a large number of fine holes 17, a dehydrating cylinder 16 which is formed in the dehydrating cylinder 16 and is tapered toward the tip thereof, and the pitch of the spiral blades 4 is A bearing unit 10 that cantilevers the screw 2 and the base portion 3a of the core shaft 3 of the screw 2 on the pedestal 1 in a cantilevered manner.
And a drive mechanism 12 for rotationally driving the core shaft 3 of the screw 2.
In the screw dehydrator equipped with, a groove 5 is provided on the mountain land 4a of the spiral blade 4 of the screw 2 over the entire length thereof, and the groove 5 has a small friction coefficient and wear resistance. A part of the packing 6 projects from the recessed groove 5 and the dehydration cylinder 16
The bearing unit 10 is fitted so as to come into contact with the inner wall surface of the bearing housing 26. The bearing unit 10 is fixed on the pedestal 1 and has an inner hole 29 at one end, and the core shaft 3 of the screw 2 in the inner hole 29. Has a radial bearing 24 attached to the base portion 3a of the above, and a cylindrical slide case 27 arranged between the outer circumference of the radial bearing 24 and the inner hole 29 of the bearing housing 26. A male screw 38 is formed, and this male screw 38 is screwed into a female screw 39 formed on the inner circumference of the inner hole 29 of the bearing housing 26. The inner circumference of the slide case 27 is attached to the outer ring 4 of the radial bearing 24.
1, a flange 37 is formed on the outer end of the slide case 27, and a detent member 48 for detenting the slide case 27 is provided on the flange 37 in a detent locked state and an unlocked state. A screw dehydrator characterized by being switchable to. 9. The screw dehydrator according to claim 3, 5 or 8, wherein the material to be dehydrated is a "go" prepared by adding water to a ground material of soybeans and heating. 10. A dehydrating cylinder 16 in the form of a tapered taper having a large number of fine holes 17, a dehydrating cylinder 16 formed in the dehydrating cylinder 16 and tapering toward the tip thereof, and the pitch of the spiral blades 4 is It is equipped with a screw 2 whose size is gradually reduced toward the tip, and a drive mechanism 12 for rotationally driving a core shaft 3 of the screw 2. The material to be dehydrated is heated by adding water to a soybean ground product. In the screw dehydrator which is a "go", a groove 5 is provided on the mountain land 4a of the spiral blade 4 of the screw 2 over the entire length thereof, and the groove 5 has a small friction coefficient and wear resistance. A part of the packing 6 projects from the recessed groove 5 and the dehydration cylinder 16
Is fitted so as to come into contact with the inner wall surface of the
A lid 59 that opens and closes the discharge port 22 is pivotally supported around a pivot shaft 62 that is orthogonal to the screw core shaft 3 so as to be openable and closable. Is fixed, and the operating lever 65 is attached to the shaft 64.
Is mounted so as to be movable in the axial direction of the shaft and swingable around the shaft axis, and a compression coil spring 67 is provided on the shaft 64. It is urged to move in the direction of the base, and a pressing roller 69 for pressing the outer surface of the lid 59 is inserted through the shaft of the tip of the operating lever 65 so as to freely rotate around the lever axis. A screw dehydrator. 11. The entire outer surface of the lid 59 is formed in the shape of a convex arc that is highest near the center and gradually lowers toward the outer periphery, and a concave groove 72 into which the pressing roller 69 is depressed is provided at the highest position. The screw dehydrator according to claim 10. 12. The screw dehydrator according to claim 8, wherein the packing 6 is made of a polytetrafluoroethylene wire having compressibility, and the packing 6 elastically contacts the inner wall surface of the dehydrating cylinder 16.