JP4424738B2 - Kneading machine - Google Patents

Description

    The present invention relates to a kneader for kneading and humidifying EP ash, fly ash, and the like.

  Conventionally, as the solidification treatment of fly ash and the like, a solidifying agent is mixed with and added to fly ash and kneaded and then solidified by a hydration reaction. For the solidification treatment of fly ash or the like, a kneader for adding and kneading the raw material mixed with fly ash and a solidifying agent such as cement is used. As this kneading machine, a horizontal rotation axis (a horizontal axis in a trough provided with an inlet for charging a mixture of raw fly ash and cement and a kneaded material on one side, that is, an outlet for taking out the kneaded material, is provided on the other side. A kneading member provided on each of the first rotating shaft and the second rotating shaft is known.

    As the above kneading member, a plate-shaped tree leaf paddle is closely arranged in the axial direction and fixed to two rotating shafts at the same position in the axial direction, and in addition to the tree leaf paddle, it rotates adjacent to the axial direction. The rod paddle provided on the outer periphery of the shaft and the rod paddle provided in the radial direction of the rotating shaft, and the rod panel provided on the first rotating shaft and the lot paddle provided on the second rotating shaft do not overlap in the axial direction. Are arranged in close proximity.

    The leaf paddles and rod paddles of the tree are both arranged in a spiral shape around the rotation axis in the axial direction.

    The leaf paddles of the tree fixed to the first rotating shaft and the leaf paddles of the tree located in the same position in the axial direction fixed to the second rotating shaft are always in contact or close to each other, and the leaf paddles adjacent to each other in the axial direction Since they are stacked, they have a strong kneading action, and are excellent kneading members in that they clean each side of the mating paddle (referred to as self-cleaning).

    However, the kneading resistance is large, and load measures and wear measures are required. When the leaf paddle is worn and replaced, after removing the upper trough of the upper and lower split trough of the kneader, basically remove the rotating shaft with the leaf paddle from the lower trough, and then from the rotating shaft The operation of pulling out the leaf paddle in the axial direction and reattaching the repaired leaf leaf paddle or a new leaf leaf paddle is necessary, which requires maintenance and costs.

    However, minor damage to the leaf paddle can be repaired by banking, grinding, etc. without removing the rotating shaft with the leaf paddle from the trough after the upper trough is removed.

    In the axial direction, a rod paddle provided on the first rotating shaft and a rod paddle provided on the second rotating shaft are arranged at a pitch of the diameter of the rod, and the rod paddles of the first and second rotating shafts are overlapped in the axial direction. It is known that all rod paddles contact or approach in the axial direction so that the rotation speed ratio of the first and second rotating shafts is set slightly shifted from 1: 1. Yes.

    When the rod paddle is worn and replaced, after removing the lid of the trough with the upper lid or the upper trough of the upper and lower troughs, remove the rod paddle from the rotating shaft without removing the rotating shaft with the rod paddle from the trough. Remove and install a new rod paddle.

However, in the self-cleaning of the rod paddle, the axial surface of the rod paddle adjacent in the axial direction on the first and second rotating shafts contacts or approaches the reciprocal of the value obtained by subtracting the rotation ratio from 1. Once. Accordingly, the rotation of Roddopa dollars in until paddle axially adjacent the all rod paddle contacts or approaches at then again axially in contact with or close proximity in the axial direction, each other kneaded material in the direction of rotation Kneading is not effectively performed over a wide range in which the force acting on each other is weak. Further, also in production, the kneading members on the two rotating shafts must be arranged on spiral surfaces with different pitches.
Japanese Utility Model Publication No. 61-7037 JP-A-11-104477 Japanese Patent Application No. 2004-135186 (unpublished) Japanese Patent Laid-Open No. 9-10728

    In these kneaders, materials that cause a hydration reaction, such as cement, are mixed with raw materials such as EP ash, fly ash, etc., and kneaded by adding water. Therefore, without stopping the kneader when the operation of the kneader is finished, the supply of raw materials and cement is stopped, and after the kneaded material is no longer carried out from the outlet of the kneader, the idling operation is further continued. . According to this idling operation, the load at the time of starting can be reduced even if the kneaded material is solidified after a lapse of time after the kneading machine is stopped.

    The problems to be solved by the present invention are as follows.

    An object of the present invention is to provide a kneader capable of reducing the starting load after a long stop by changing the configuration of the kneader.

    Another object of the present invention is to provide a kneader having a smaller rotational force.

    Another object of the present invention is to provide a kneader that can reduce the operation stop time due to the fixation of the kneaded material, and can reduce the recovery time even if the kneaded material is fixed.

    Another object of the present invention is to provide a kneading machine that is well kneaded at various points in the axial direction, easy to manufacture, and easy to maintain.

The first invention according to the present application is the same with an electric motor in a trough having a raw material inlet on the upper surface of one end in the longitudinal direction and a kneaded material outlet kneaded on the bottom of the other end. a kneading machine having a rotor with a first, a number of kneading member in the axial direction of the rotary shaft in a second rotational axes of the two horizontal axes parallel driven at the same rotational speed in a direction,
Each rotating shaft having a journal portion supported by a bearing at both ends and an eccentric portion having a center line eccentric from the rotation center of the rotating shaft between both journal portions;
A large number of kneading members arranged in an axial direction and fixed to the eccentric portion of each rotating shaft;
In kneader having,
The kneading members are substantially the same in the axial direction of the eccentric portion of the first rotating shaft and the eccentric portion of the second rotating shaft on the double spiral surfaces twisted in the same twisting direction around the center of each eccentric portion. A first portion provided at an eccentric portion of the first rotating shaft that is provided at a position and protrudes on both sides across the diameter of the eccentric portion when viewed from the axial direction of the eccentric portion of each rotating shaft. The kneading member and the second kneading member provided at the eccentric portion of the second rotating shaft are 90 degrees out of phase in the circumferential direction of the eccentric portion, and the first rotating shaft of the first kneading member is eccentric. The sum of the length in the radial direction centered on the portion and the length in the radial direction centered on the eccentric portion of the second rotating shaft of the second kneading member is the axis of the first and second rotating shafts The first kneading member is longer than the distance between the first kneading member and the first kneading member so that the first and second kneading members do not interfere with each other during rotation. 2 of the rotary shaft eccentric portion and do not interfere the length of, or the second kneading member a kneader and having a length that does not interfere with the eccentric portion of the first first rotation axis.

Kneading according to the second aspect of the present application is the first invention, wherein a plurality of kneading members are arranged from the inlet side of the raw materials to the exit of the kneaded product towards the outlet side of the kneaded product Machine.

According to a third aspect of the present application, the kneading members arranged below the raw material inlet are screw blades having the same pitch provided on a single spiral surface twisted in the same twist direction around the center of each eccentric portion. The first screw blade provided in the eccentric portion of the first rotating shaft and the second screw blade provided in the eccentric portion of the second rotating shaft are mutually connected to each other at the opposing portion. The valleys face each other, and the sum of the radius from the center of the eccentric portion of the first rotating shaft of the first screw blade and the radius from the center of the eccentric portion of the second rotating shaft of the second screw blade is The distance between the first and second rotating shafts is greater than the distance between the shafts, and the first screw blades do not interfere with the eccentric portion of the second rotating shaft, or the second screw blades are not in the first rotating shaft. The kneader according to the second aspect of the present invention has a size that does not interfere with the eccentric portion.

According to a fourth aspect of the present application, the kneading members arranged below the raw material inlets are eccentric on the first rotating shaft on each single spiral surface twisted in the same torsional direction around the center of each eccentric portion. Are provided at the eccentric part of the first rotating shaft that is provided at substantially the same position in the axial direction of the eccentric part of the second rotating shaft and protrudes from one side of the eccentric part of each rotating shaft and is at the same position in the axial direction. The first kneading member and the second kneading member provided at the eccentric portion of the second rotating shaft have a phase difference of 90 degrees in the circumferential direction of the eccentric portion, and the first kneading member of the first kneading member The length in the radial direction centered on the eccentric portion of the rotating shaft and the length in the radial direction centered on the eccentric portion of the second rotating shaft of the second kneading member are the first and second sums of the lengths. The distance between the rotation shafts is greater than the distance between the rotation shafts, and the first and second kneading members do not interfere with each other during rotation. Kneading member length that does not interfere with the eccentric portion of the second rotation shaft or the second kneading member second invention characterized by having a length that does not interfere with the eccentric portion of the first rotary shaft The kneading machine described.

A fifth invention according to the present application is the kneading machine according to the first, second, or fourth invention, wherein the kneading member has a rod shape and is detachably fixed to the eccentric portion of each rotating shaft. .

According to the present invention, because of the eccentric portion, the whirling of the eccentric portion by rotation around the rotation portion of the eccentric portion, in which the kneaded material is kneaded, in a radial direction of the eccentric portion from the eccentric portion center When kneading members having the same length are provided, the number of kneading members close to the inner wall surface of the trough is smaller than when kneading members having the same length are provided on the rotating shaft having no eccentric portion. Since there are few kneading members near the inner wall surface of the trough, the starting torque when the kneaded material is fixed is small.

    The number of kneading members from the center of the rotating shaft to the inner wall of the trough is one near the eccentric direction of the eccentric portion at the same time for the kneading members at the same position in the axial direction. Other kneading members in the same position in the axial direction are far from the trough inner wall. That is, since one kneading member is close to the trough inner wall at the same position in the axial direction through the first rotating shaft and the second rotating shaft, the amount of kneaded material near the trough inner wall can be reduced during idling. And since it is one kneading member about one place of an axial direction which gives a big torque load at the time of fixation, the starting load of a kneading machine can be made small.

    Since each eccentric part of the first rotating shaft and the second rotating shaft has the same center line with respect to the rotation direction around the respective centers of the first and second rotating shafts, By rotation, the kneaded material is pushed away from the farthest position on the outer periphery of the eccentric part as viewed from the rotation axis for 180 degrees upstream in the rotational direction of the eccentric part. Therefore, the eccentric part also contributes to the kneading action. The density of the kneaded material is sparse for 180 degrees in the circumferential direction on the downstream side in the rotation direction of the eccentric portion. Therefore, the force of adhering to the eccentric part of the kneaded product after stopping the kneader becomes small, which can contribute to the reduction of the starting torque at the time of adhering. The fact that each eccentric part has the same phase means that the distance between the opposing parts of the outer peripheral surface of each eccentric part is constant, so the length of the kneading member is the same as that of a normal rotating shaft without an eccentric part. That is, there are no particular restrictions on making the lengths of the kneading members equal.

    Further, since the kneading members are arranged at the same position in the axial direction of the eccentric portion of the first rotating shaft and the eccentric portion of the second rotating shaft, the kneading members are disposed at different phases, so that the first and second rotations When the shaft rotates in the same direction and with the same degree of rotation, the first and second kneading members at the same position in the axial direction knead the kneaded material twice at different positions at the same position. large. Since the kneading member is on the spiral surface twisted in the same twist direction around the center of the eccentric portion of each rotating shaft, the kneaded material is kneaded from the inlet side toward the outlet side and fed uniformly.

Further, in the production, when the arrangement of the attachment portion for attaching the kneading member to the eccentric portion of the rotating shaft is set at a constant interval in the axial direction, the phase change of the kneading member is uniform, and the production is easy.

If there is a gap between adjacent kneading members in the axial direction, for example, if a solid material having the size of gravel is allowed to pass, the kneaded material mixed with such a solid material is kneaded. However, it is not overloaded and the solid matter is not crushed.

The first and second kneading members at the same position in the axial direction of the eccentric portion of each rotating shaft made an angle of 45 degrees with respect to the line connecting the centers of the eccentric portions of the first and second rotating shafts. and the leading end of the kneading member to approach when, and, kneaded it can be sufficiently kneaded material in one location in the axial direction when the length which is not mutually interfere.

As shown in FIGS. 34 to 36, the motor 3 rotates in the same direction in the trough 2 having a raw material inlet 2a at one end and a kneaded material outlet 2b kneaded at the other end. In a kneading machine having rotors 19 and 21 provided with a large number of kneading members 6 and 7 (see FIG. 1) in the axial direction of two rotating shafts 4 and 5 parallel to each other and driven at a speed,
The rotary shafts 4 and 5 are eccentric portions 4c and 5c having center lines eccentric from the rotation centers of the rotary shafts 4 and 5 between the journal portions 4a, 4b, 5a and 5b supported by bearings at both ends and the journal portions. And
The eccentric portions 4c and 5c of the first rotating shaft 4 and the second rotating shaft 5 have the same phase with respect to the rotation direction in which the center line of the eccentric portion is centered on the rotation centers of the first and second rotating shafts 4 and 5. It has become.

    As shown in FIG. 1, the kneading members 6 and 7 are arranged on the spiral surface twisted in the same twisting direction around the centers of the eccentric parts 4c and 5c, and the eccentric part 4c of the first rotating shaft 4 and the second rotation. The shaft 5 is provided at the same or substantially the same position in the axial direction of the eccentric portion 5c.

    The kneading members 6 and 7 are provided with a first group and a second group in the axial direction from the inlet 2a side to the outlet 2b. As shown in FIG. 1 to 9 are the first group. Here, in order to indicate each kneading member, for example, lot no. In the kneading member No. 3, the rotating shaft 4 side is assigned a lot with a hyphen to the reference numeral 6. Add 3 to 6-3. Similarly, on the rotating shaft 5 side, a high phone is added to the reference numeral 7 to indicate the lot number. 3 is added and expressed as 7-3.

    The kneading members 6-1 to 6-9 and 7-1 to 7-9 are provided on spiral surfaces provided in the axial direction of the eccentric portions 4c and 5c, respectively, with the center line of the eccentric portions 4c and 5c as the center line. is there. These kneading members 6-1 to 6-9 and 7-1 to 7-9 are each flat and rectangular, and are implanted in the eccentric portions 4c and 5c.

    Speaking easily, the kneading members 6-1 to 6-9 and 7-1 to 7-9 are the shapes of the portions left by removing the screw blades continuously provided on the spiral surface at regular intervals. It is. The spiral surface on which the kneading members 6-1 to 6-9 are disposed and the spiral surface on which the kneading members 7-1 to 7-9 are disposed have a phase difference of 90 degrees.

    The spiral surface on which the kneading members 6-1 and 7-1 to 6-7 and 7-7 are located is single, but lot no. The spiral surface on which the 8 and 9 kneading members 6-8, 6-9, 7-8, and 7-9 are present is a double spiral surface having a phase difference of 180 degrees, and the kneading member is at the same position in the axial direction. 6-8a and 6-8b, 7-8a and 7-8b, 6-9a and 6-9b, and 7-9a and 7-9b.

    Here, the attached numbers a and b indicate that the respective kneading members are located at the same or substantially the same position in the axial direction and protrude on both sides across the diameter of the eccentric portions 4c and 5c. However, the kneading members 6-1 to 6-7 and 7-1 to 7-7 are arranged in the radial direction at one axial position of each of the eccentric portions 4c and 5c. That is, it is arranged on a single spiral surface on the eccentric parts 4c, 5c. The kneading members 6-8a, 7-8a, 6-9a, and 7-9a are 90 degrees out of phase with respect to the spiral surface on which the kneading members 6-1 to 6-7, 7-1, and 7-7 are disposed. Arranged on different spiral surfaces.

    Kneading members 6-1 to 6-7, 6-8b, 6-9b, kneading members 7-1 to 7-7, and 7-8b, 7-9b are respectively disposed on a single spiral surface. Are 90 degrees out of phase with the same twist direction and the same twist angle.

    The first group of kneading members 6-1 to 6-9 and 7-1 to 7-9 are provided below the inlet 2a.

    In addition, you may make it provide the below-mentioned 2nd group kneading member from the downward direction of the inlet 2a, without providing the 1st group kneading member. The kneading member of the first group may be a screw blade (see other examples described later).

    The kneading member of the second group will be described. As shown in FIG. 1, an overflow plate 22 is provided between the kneading members 6-9, 7-9 and 6-10, 7-10. In the second group kneading members 6-10 to 6-23 and 7-10 to 7-23, the first group kneading members 6-9a, 6-9b, 7-9a, and 7-9b are disposed. It arrange | positions on the extension toward the exit 2b side of a spiral surface.

    The kneading members 6-10 to 6-30 and 7-10 to 7-30 all project outward in the radial direction of the eccentric portions 4c and 5c. The lot numbers of the eccentric portions 4c and 5c are substantially the same in the axial direction. Is i, the kneading members 6-i, 7-i (i: 10, 11,... 29, 30) project from both sides across the diameter of the eccentric parts 4c, 5c when viewed from the axial direction. First kneading members 6-10 to 6-30 provided at the eccentric portion 4c of the first rotating shaft 4 and the second kneading provided at the eccentric portion 5c of the second rotating shaft 5 at substantially the same position. The members 7-10 to 7-30 are 90 degrees out of phase in the circumferential direction of the eccentric portions 4c and 5c, and the eccentric portion 4c of the first rotating shaft 4 of the first kneading members 6-10 to 6-30. Is the sum of the lengths in the radial direction around the center and the length in the radial direction around the eccentric portion 5c of the second rotating shaft 5 of the second kneading members 7-10 to 7-30. The first and second kneading members 6-10 to 6-30 and 7-1 are larger than the distance between the second rotation shafts 4 and 5, and during rotation. To 7-30, and the first kneading members 6-10 to 6-30 do not interfere with the eccentric portion 5c of the second rotating shaft 5, or the second kneading members. 7-10 to 6-30 have a length that does not interfere with the eccentric portion 4c of the first rotating shaft 4. This is the same for the first group of kneading members 6-8, 6-9 and 7-8, 7-9.

    In the above description, the first kneading members 6-10 to 6-30 and the second kneading members 7-10 to 7-30, which are substantially in the same position in the axial direction of the eccentric portions 4c and 5c, are the centers of the eccentric portions 4c and 5c, respectively. The radial length from is equal.

    In the above description, the first and second kneading members 6-10 to 6-30 and 7-10 to 7-30 at substantially the same position in the axial direction of the eccentric portions 4c and 5c are the first and second rotating shafts 4 respectively. , 5 have a length that does not interfere with each other when they form an angle of 45 degrees with respect to a line connecting the centers of the eccentric parts 4c, 5c.

    In the above description, the kneading members 6-10 to 6-30 and 7-10 to 7-30 are each rod-shaped and fixed to the eccentric portions 4c and 5c of the rotary shafts 4 and 5 in a removable manner.

    In each of the above, the kneading members 6-i, 6- (i + 1), 7-i, 7- (i + 1) (i; 1, 2, 3,... 29) adjacent in the axial direction are respectively spaced in the axial direction. I keep it.

    Here, the kneading members 6-i, 7-i and 6-30, 7-30 at the same or substantially the same position in the axial direction of the eccentric parts 4c, 5c are viewed from the axial direction of the eccentric parts 4c, 5c. Projecting on both sides across the diameter of the eccentric parts 4c, 5c. Therefore, the kneading members 6-ia and 7-ia are attached to one of both sides of the eccentric portions 4c and 5c at substantially the same position in the axial direction by adding suffixes a and b, respectively. The kneading members 6-ib and 7-ib are attached to the other one of both sides across the diameters of 4c and 5c with an attached symbol.

    In the above description, the inner wall surface of the trough 2 has a point-symmetric wall surface with the bisection point of the line connecting the rotation centers of the rotation shafts 4 and 5 as the center.

(overall structure)
34 is a longitudinal sectional view of the kneader, and FIG. 35 is a YY sectional view of FIG. However, in FIG. 35, illustration of the water heater S shown in FIG. 34 is omitted. 36 is a plan view of FIG. 34 shown in partial cross section.

    As shown in FIGS. 34 and 36, the kneader 1 has an inlet 2a for raw material at one end and the motor 3 in a trough 2 having an outlet 2b for kneaded material kneaded at the other end. It has two parallel rotating shafts 4 and 5 driven in the direction at the same rotational speed. The journals 4 a and 4 b at both ends of the rotating shaft 4 are supported by the bearing device 14 and the bearing unit 9. Journal portions 5 a and 5 b at both ends of the rotating shaft 5 are supported by a bearing device 15 and a bearing unit 11. The rotating shafts 4 and 5 have eccentric portions 4c and 5c between journal portions 4a and 4b and 5a and 5b at both ends, respectively. Similarly, a number of kneading members 6 and 7 (see FIG. 1) are provided around the eccentric portions 4c and 5c in the axial direction. The rotating shafts 4 and 5 provided with the kneading members 6 and 7 are referred to as rotors 19 and 21.

    The raw material inlet 2a is open on the upper surface of one end of the trough 2 in the longitudinal direction (axial direction of the rotors 19 and 21). The kneaded product outlet 2 b opens at the bottom of the other end of the trough 2.

    When the kneader 1 has an extruding function, the rotating shafts 4 and 5 near the outlet 2b are provided with screw blades (not shown) for feeding the kneaded material to the right in FIG. 34 in the same twisting direction as the kneading member. A forming die (not shown) is provided on the trough 2 at the right end of the head. This embodiment is an embodiment of a kneader only for kneading and does not have a screw blade on the outlet side.

    As shown in FIG. 35, the trough 2 has a trough body 2d having a wall surface so as to surround the kneading members 6 and 7 except for the upper opening 2c, and a trough lid 2e that is closed so that the upper opening 2c can be opened. . The upper opening 2c is widened at the entrance 2a. The upper opening 2c of the trough 2 extends over almost the entire length of the trough body 2d. An inlet 2a for the raw material is provided in a trough lid 2e that closes the upper opening 2c. End plates 2f and 2g are fixed to both ends of the trough body 2d in the longitudinal direction. The end plate 2g is provided with a shaft seal member 8 for sealing one end of the rotary shafts 4 and 5, for example, a gland packing. Further, bearing units 9 and 11 having bearings for supporting the rotating shafts 4 and 5 are fixed to the end plate 2g. The end plate 2f is provided with a shaft seal member 12, for example, a gland packing, for sealing the other end of the rotary shafts 4 and 5.

    The other ends of the rotary shafts 4 and 5 are supported by bearing devices 14 and 15 provided on the bed 13 that supports the trough 2. Gears 16 and 17 shown in FIG. 37 are fixed to the other ends of the rotary shafts 4 and 5 penetrating the bearing devices 14 and 15. The gears 16 and 17 have the same pitch and the same number of teeth. A gear 18 that meshes with the gears 16 and 17 is fixed to the output shaft end of the electric motor 3. The electric motor 3 is fixed to the bed 13.

    As shown in FIG. 34, a water heater S is provided between the inlet 2a and the outlet 2b. The water heater S feeds water or the like into the trough 2 in order to humidify the mixed fly ash or the like and a solidifying agent such as cement.

    When the electric motor 3 is driven, the kneading machine 1 is transmitted with rotation from the gear 18 to the gears 16 and 17, and the rotors 19 and 21 rotate in the same direction at the same rotational speed. The fly ash and the like and the solidifying agent charged from the inlet 2a are mixed by the rotation of the rotors 19 and 21 and sent to the outlet 2b side, and the kneaded material kneaded after humidification by the water heater S reaches the outlet 2b and is discharged. The

(Kneading member arrangement and numbering method)
In FIG. 1, the center lines of the rotors 19 and 21 are on a horizontal plane. The rotors 19 and 21 are kneaded at equal intervals except for one axial direction (kneading members 6-9 and 6-10 straddling both sides of the overflow plate 22 and between 7-9 and 7-10). 7 The kneading member 6 is provided on the rotating shaft 4, and the kneading member 7 is provided on the rotating shaft 5. As shown in FIG. 2, the eccentric portions 4c and 5c of the rotary shafts 4 and 5 are cylindrical with center lines passing through the centers C41 and C51 (rotation centers) eccentric centers C42 and C52 of the journals 4a and 4b. The kneading members 6 and 7 are fixed to the outer periphery of the eccentric portions 4c and 5c. In order to distinguish the kneading members 6 and 7 according to the position in the axial direction, each kneading member 6 and 7 is added with a hyphen and an attached number with an order number from left to right in FIG. The numbers in the accompanying numbers are the lot numbers shown in circles in FIG. Lot NO. It is shown as For example, in FIG. 1, the leftmost kneading member is denoted by reference numerals 6-1 and 7-1, and the nineteenth from the left is denoted by reference numerals 6-19 (6-19a, 6-19b), 7-19 (7-19a 7-19b) (subscripts a and b will be described later). In addition, the lot No. The kneading members 6-ia and 7-ia (i: 10... 30) to which 10A to 30A are attached are the lot numbers. The kneading members 6-ib and 7-ib (i: 10... 30) assigned 10 to 30 are offset to the right in the axial direction by ΔP.

    In the case of FIG. 1, the plurality of kneading members arranged in the axial direction are provided on a spiral surface around the eccentric portions 4c and 5c. These spiral surfaces have constant leads but may take variable leads. Since the axial pitch of the kneading members 6 and 7 is constant when the leads on the spiral surface are constant (the following description is all about the case where the leads are constant), the kneading members 6-i, The leads of 7-i and 6- (i + 1), 7 (i + 1) (i: 10... 29) are also constant. In this example, the lead angles of the kneading members 6-i, 7-i and 6- (i + 1), 7- (i + 1) (i: 10... 29) adjacent in the axial direction are 360 degrees / 8 = 45 degrees. It has become. However, as will be described later, the spiral surfaces on which the kneading members around the eccentric portions 4c and 5c are located have different twist directions in the axial positions.

(Overflow plate)
In FIG. 1, the overflow plate 22 is a metal plate orthogonal to the axial direction of the eccentric portions 4c and 5c. The overflow plate 22 is attached to the trough body 2d or the trough lid 2e. The overflow plate 22 limits the cross section of the trough 2, and is suspended from the lower surface of the trough lid 2e as shown in FIG. The position of the lower edge of the overflow plate 22 (please fill in) The overflow plate 22 limits the flow of a large amount of kneaded material from the bottom of the inlet 2a to the outlet 2b through the upper opening 2c side of the trough 2 at once. To do.

    The kneaded material moves under the overflow plate 22 from the inlet 2a side to the outlet 2b side.

    As another embodiment, the overflow plate 22 may have the same position in the longitudinal direction of the trough 2 and may partially block the lower portion of the trough 2.

    If it does in this way, a kneaded material will move over the overflow plate 22 from the inlet 2a side to the outlet 2b side. At that time, the amount of excess is regulated.

    As described above, the overflow plate 22 is provided at the end of the inlet 2a close to the outlet 2b, and the cross-section of the trough 2 is limited so that the kneaded material is directly fed from the inlet 2a to the second group of kneading members 6-10 to 6-6. -30, and 7-10 to prevent going to 7-30. Since there is an overflow plate 22, the raw material charged from the inlet 2a is not kneaded by the first group kneading members 6-1 to 6-9 and 7-1 to 7-9, but to the second group kneading members. It is prevented from being sent. That is, since the overflow plate 22 is present, the first group of kneading members 6-1 to 6-9 and 7-1 to 7-9 perform kneading of the raw materials as much as necessary, and then the second group of kneading members 6 -10 to 6-30 and 7-10 to 7-30. Here, it is described that the raw material is kneaded by the first group of kneading members, but when the raw material is in a dry state, it is mixed.

(Configuration of rotor)
As shown in FIG. 1, many kneading members 6 and 7 are provided at the same position or substantially the same position (described later) in the axial direction of the eccentric portion 4c of the first rotating shaft 4 and the eccentric portion 5c of the second rotating shaft 5. It has been. The kneading members 6 and 7 have the same twist within the same axial range of the eccentric portions 4c and 5c with the eccentric portions 4c and 5c of the first rotating shaft 4 and the second rotating shaft 5 as the center. On the spiral surface twisted in the direction, a large number are provided in the axial direction. The spiral surface has a constant lead, but the lead may be gradually changed in the axial direction. A gap is provided between the kneading members 6 and 7 adjacent in the axial direction of the rotary shafts 4 and 5.

    The kneading members 6-1 to 6-7 and 7-1 to 7-7 are provided to protrude only on one side in the radial direction of the eccentric portions 4c and 5c. The kneading members 6-i and 7-i (i: 1... 7) located at the same position in the axial direction of the eccentric portions 4c and 5c in the kneading members 6-1 to 6-7 and 7-1 to 7-7 are as follows. The phases are different by 90 degrees with respect to the centers of the eccentric portions 4c and 5c.

    In the kneading members 6-8 to 6-30 and 7-8 to 7-30, the kneading members at the same or substantially the same position in the axial direction are provided so as to protrude on both sides across the diameters of the eccentric portions 4c and 5c, respectively. It has been. Then, the first kneading member 6-i provided in the eccentric part 4c of the first rotating shaft 4 and the second part provided in the eccentric part 5c of the second rotating shaft 5 at the substantially same position in the axial direction. The kneading members 7-i (i: 8... 30) are 90 degrees out of phase in the circumferential direction of the eccentric parts 4c, 5c.

    Here, the kneading members 6-ia and 6-ib, 7-ia and 7-ib at the same position or substantially the same position in the axial direction of the eccentric parts 4c and 5c will be described.

    For example, in FIG. 6 (J) showing a view taken along the arrow J in FIG. 1, the kneading members 6-10a and 7-10a are at the same position in the axial direction of the eccentric portions 4c and 5c. Similarly, the kneading members 6-10b and 7-10b are at the same position in the axial direction of the eccentric portions 4c and 5c. The kneading members 6-10a and 6-10b and 7-10a and 7 are located at substantially the same position when viewed from the axial direction of the eccentric portions 4c and 5c and project on both sides across the diameter of the eccentric portions 4c and 5c. -10b. Here, the kneading members 6-10a and 6-10b, and 7-10a and 7-10b at substantially the same position in the axial direction are offset by ΔP in the axial direction of the eccentric portions 4c and 5c (see FIG. 1). . This offset amount ΔP is 5 millimeters in this example. Accordingly, the plane which is drawn when the kneading members 6-10a and 7-10a are rotated about the rotation shafts 4 and 5 and the plane which is drawn when the kneading members 6-10b and 7-10b are rotated about the rotation shafts 4 and 5 are drawn. The plane is separated by an offset amount in the axial direction of the eccentric portions 4c and 5c.

    However, this offset amount ΔP is such a size that the kneading members 6-10a and 6-10b are not overlapped in the axial direction and 7-10a and 7-10b are not overlapped.

    Only the axial pitch of the kneading members 6-9 and 6-10 and the eccentric portions 4c and 5c of 7-9 and 7-10 is larger than the same pitch between the other kneading members. Axial directions of kneading members 6-9 and 6-10 and kneading members 6-i and 6- (i + 1), 7-i and 7- (i + 1) excluding an axial pitch between 7-9 and 7-10 Pitch P = 32 millimeters, and both are equal.

    Similarly including the above, the kneading members 6-ia, 6-ib, and 7-ia that are at the same position or substantially the same position in the axial direction of the eccentric parts 4c, 5c and span the diameter of the eccentric parts 4c, 5c, The kneading members 6-ia and 7-ia or 6-ib and 7-ib projecting in one radial direction of 7-ib (i: 8... 30) are the same in the axial direction of the eccentric portions 4c and 5c. In position. The kneading members 6-ia and 6-ib and 7-ia and 7-ib (i: 10... 30) are offset by ΔP in the axial direction of the eccentric portions 4c and 5c. That is, the lot number with the subscripts a and b in the second group is added. The same kneading member is offset by ΔP in the axial direction of the eccentric portions 4c and 5c.

The amount of the offset ΔP is equal to the kneading members 6-i and 6- (i + 1) and 7-i and 7 (i + 1) (i: 10, 11,... Adjacent to each other with a pitch P in the axial direction of the eccentric portions 4c and 5c. -For 29), if the diameters of the kneading members 6-10 to 6-30 and 7-10 to 7-30 are d
P>d> ΔP
The offset ΔP is selected. Accordingly, the kneading members 6-ia and 6- (i + 1) a and 7-ia and 7- (i + 1) a adjacent in the axial direction of the second group of kneading members do not come into contact with each other. Similarly, the kneading members 6-ib and 6- (i + 1) b and 7-ib and 7- (i + 1) b do not come into contact with each other.

    Here, the drawing of FIG. 1 will be described. FIG. 1 is a plan view showing the rotors 19 and 21. 1 indicate the positions of the kneading members 6 and 7 in the axial direction. The kneading members 6 and 7 are positioned so that the lines passing through the circled numbers 1 to 30 provided at right angles to the rotary shafts 4 and 5 respectively overlap the center lines of the kneading members 6 and 7 except for a part. . The kneading members 6-ia and 7-ia (i: 10... 30) are positioned with an offset of ΔP in the axial direction from the lines passing through the circled numbers. The kneading members 6-ib and 7-ib (i: 10... 30) have their center lines superimposed on a line perpendicular to the rotary shafts 4 and 5 passing through the encircled numbers 10 to 30.

    When it is necessary to indicate the circled numbers, the numbers are enclosed in parentheses. Further, in FIG. 1, the kneading members 6 and 7 are all provided with a lead line, and the kneading members are not labeled, but if necessary, the axial positions of the kneading members 6 and 7 clearly shown in FIG. Lot No. It is shown with a circled number indicated by. For example, lot no. The kneading member at position 12 is provided on the eccentric portion 4c, and a hyphen is attached to the reference numeral 6 and lot no. 12 is added to represent the kneading member 6-12. Similarly, the kneading member provided in the eccentric portion 5c is provided with a hyphen at the reference numeral 7 and lot no. 12 is added to represent the kneading member 7-12. In addition, kneading members positioned substantially at the same position in the axial direction of the eccentric portions 4c and 5c and projecting on both sides across the diameter of the eccentric portions 4c and 5c are denoted by a and b, for example, kneading members 6-12a and 6 -12b, 7-12a, 7-12b, etc.

    Next, the kneading member will be further described.

(First group kneading member)
First, the kneading members 6-1 to 6-9 of the first group will be described. As shown in FIG. 1, the kneading members 6-1 to 6-8b and 6-9b are located on a spiral surface provided in the axial direction around the eccentric portion 4c. In this example, the spiral surface is right-handed. The kneading members 6-8a and 6-9a are on the spiral surface provided around the eccentric portion 4c so as to be 180 degrees out of phase with the aforementioned spiral surface. In this example, the diameter of the eccentric portion 4c is 70 millimeters, and the above-mentioned spiral surface leads are 256 millimeters.

    The pitch in the axial direction of each adjacent kneading member from kneading members 6-1 to 6-9 is 32 millimeters. The kneading members 6-1 to 6-9 and 7-1 to 7-9 each have a flat plate shape. Center lines 6c and 7c (see FIG. 2A) of the plate surface are aligned with the spiral surface, and the plate surface is along the spiral surface. The center lines 6c and 7c coincide with straight lines extending in the radial direction of the eccentric portions 4c and 5c from the centers C42 and C52 of the eccentric portions 4c and 5c, respectively.

    Here, since the plate surface is a flat plate, either the tip, the root, or the middle of the kneading member is set along the spiral surface. In this example, the ends of the kneading members 6-1 to 6-9 and 7-9 to 7-9 are placed along the spiral surface. The kneading members 6-1 to 6-9 and 7-1 to 7-9 may have a configuration in which screw blades that coincide with the spiral surface are cut off.

    FIG. 11 is a view taken in the direction of arrow A in FIG. 12 is a view taken in the direction of arrow B in FIG. As shown in FIGS. 11 and 12, the kneading member 6-1 has the center line 6c intersecting the axial center line C42L of the eccentric portion 4c. And the kneading | mixing member 6-1 is being fixed to the eccentric part 4c. The kneading member 6-1 is fixed to the eccentric part 4c by, for example, adding a male screw passing through the center line 6c to the root of the kneading member 6-1 and providing the male screw on the outer periphery of the eccentric part 4c. It is fixed by screwing into a female screw in the radial direction 4c.

    In FIG. 11, the kneading member 6-11 has a plate shape along the spiral surface on the eccentric portion 4c. However, the screw blades of the first group are not limited to this, and as other kneading members, the plate surface shown in FIG. 11 does not follow the panel surface, but the plate surface intersects the spiral surface, for example, It is good also as a right angle with respect to a spiral surface. Moreover, a round bar, a square bar, etc. are employable as the kneading member 6-1. In short, it depends on how the stirring force and feeding force are applied to the kneader.

  As shown in FIG. 2A, the position in the circumferential direction of the eccentric portion 4c of the kneading member 6-1 is relative to the line 4d indicating the eccentric direction connecting the rotation center C41 of the rotating shaft 4 and the center C42 of the eccentric portion 4c. Thus, the center line 6c of the kneading member 6-1 is at a position advanced 67.5 degrees in the direction of the rotation direction R1 of the rotary shaft 4. The kneading member 7-1 is at the same position in the axial direction of the kneading member 6-1 and the eccentric portions 4c and 5c. The kneading members 6-1 and 7-1 are 90 degrees out of phase in the circumferential direction of the eccentric portions 4c and 5c.

  As shown in FIG. 2A, the center C52 of the eccentric portion 5c is directly above the rotation center C51 of the rotation shaft 5 of the eccentric portion 5c, and the eccentric direction of the eccentric portion 4c with respect to the rotation center C41 of the rotation shaft 4 The eccentric direction with respect to the rotation center C52 of the rotating shaft 5 of the eccentric part 5c is the same direction. That is, the eccentric portions 4c and 5c are in phase with respect to the rotation direction around the rotation centers C41 and C51 of the first and second rotation shafts 4 and 5. The eccentric amounts of the centers C42 and C52 of the eccentric portions 4c and 5c from the rotation centers C41 and C51 are the same.

  The center line 7c of the kneading member 7-1 is at a position advanced by 90 ° + 67.5 ° in the direction of the rotation direction R2 of the rotary shaft 5 with respect to the line 5d indicating the eccentric direction of the eccentric portion 5c. That is, the phase of the kneading member 7-1 is advanced by 90 degrees with respect to the rotational direction of the kneading member 6-1.

  Each kneading member 6-2 to 6-8b, 6-9b is also on the same one-lead spiral surface where the kneading member 6-1 around the eccentric portion 4c is located. On the eccentric portion 5c, the kneading members 7-1 to 7-8b and 7-9b are located on the spiral surface of the same lead that is 90 degrees out of phase with the spiral surface (FIGS. 1 and 2). A) to FIG. 6 (I)). The spiral surfaces on the eccentric parts 4c and 5c where the kneading members 6-1 to 6-8b and 6-9b and 7-1 to 7-8b and 7-9b exist are respectively twisted in the right-handed direction. The spiral surfaces on the eccentric portions 4c and 5c where 6-8a, 6-9a, and 7-8a and 7-8a exist are kneaded members 6-8b, 6-9b, and 7-8b and 7-8b. The twist direction is the same as that of the existing spiral surface, but the phase is 180 degrees different.

    In the above description, the kneading member 6-1 has been described as the shape of the kneading member. However, the kneading members 6-1 to 6-9 and 7-1 to 7-9 in the first group are the same as the kneading member 6-1. It is a plate shape. Further, adjacent portions of the kneading members 6-1 to 6-9 and 7-1 to 7-9 are arranged at intervals in the axial direction.

    A second group kneading member is disposed near the outlet of the first group kneading member. In this example, the overflow plate 22 is used as a boundary between the first group of kneading members and the second group of kneading members. However, this boundary may be back and forth with respect to the overflow plate in the axial direction of the rotating shaft. However, the range is a range from the side of the entrance closer to the exit to the side of the entrance closer to the exit toward the exit and close to the entrance. Even when the overflow plate 22 is not used, the boundary between the first group of kneading members and the second group of kneading members is the same as described above, and there is a range of selection in the axial direction of the rotating shaft.

(Kneading member of the second group)
Next, the shapes and arrangements of the second group kneading members 6-10 to 6-30 and 7-10 to 7-30 will be described.

  13 is a cross-sectional view of FIG. 6J, and FIG. 14 is a cross-sectional view of FIG. The kneading member 6-10b is rod-shaped. In this example, the kneading member 6-10b has a cylindrical shape with the center line 6e in the radial direction of the eccentric part 4c passing through the center C42 of the eccentric part 4c as the center line, and the tip is chamfered. For example, a male screw is provided on the base side of the kneading member 6-10b. By screwing this male screw into a radial female screw provided on the outer periphery of the eccentric portion 4c, the kneading member 6-10b is moved to the eccentric portion 4c. It is fixed.

  The shapes of the second group kneading members 6-10 to 6-30 and 7-10 to 7-30 are the same, and are similarly fixed to the eccentric portions 4c and 5c.

  The arrangement of the second group of kneading members 6-10 to 6-30 and 7-10 to 7-30 will be described. As already described, the kneading members 6-10 to 6-30 and 7-10 to 7-30 are at substantially the same position in the axial direction on both sides across the diameters of the eccentric portions 4c and 5c. The kneading members 6-ia and 6-ib and 7-ia and 7-ib (i: 10... 30) protrude to both sides across the diameters of the eccentric portions 4c and 5c when viewed in the axial direction. Here, the kneading members 6-ia and 6-ib and 7-ia and 7-ib (i: 10... 30) are in substantially the same position in the axial direction, for example, as shown in FIG. Means that the kneading members 6-10a and 6-10b are offset by ΔP in the axial direction of the eccentric portion 4c. The kneading members 6-10a and 6-10b may be at the same position in the axial direction of the eccentric portion 4c without this offset ΔP.

  Next, the arrangement of the kneading members 6-10 to 6-30 and 7-10 to 7-30 will be described. Here, the kneading members 6-ia and 6-ib and 7-ia and 7-ib (i: 10... 30) are described as being in the same position in the axial direction of the eccentric portions 4c and 5c. The kneading members 6-ia and 6-ib are respectively located on the spiral surface on the eccentric portion 4c. Here, the phase of the spiral surface where the kneading member 6-ia exists and the spiral surface where the kneading member 6-ib exists are 180 degrees different from each other. The same applies to the kneading members 7-ia and 7-ib. When the offset ΔP is between the kneading members 6-ia and 6-ib or 7-ia and 7-ib, the kneading members 6-ia, 7-ia and 6-ib on the eccentric portions 4c and 5c. , 7-ib may be considered to have a different lead ΔP in addition to the lead of the double spiral surface being different by 180 degrees.

    The first kneading members 6-10 to 6-30 provided in the first eccentric portion 4c at the same position in the axial direction and the second kneading members 7-10 to 7 provided in the second eccentric portion 5c. -30 is 90 degrees out of phase in the circumferential direction of the eccentric parts 4c, 5c.

    The length in the radial direction around the first eccentric part 4c of the first kneading members 6-10 to 6-30 and the center of the second eccentric part 5c of the second kneading members 7-10 to 7-30 The sum of the lengths in the radial direction is larger than the inter-axis distance between the first and second rotating shafts 4 and 5, and the first and second kneading members 6 and 7 do not interfere with each other during rotation. In addition, the first kneading member 6 has a length that does not interfere with the eccentric portion 5 c of the second rotating shaft 5, or the second kneading member 7 has a length that does not interfere with the eccentric portion 4 c of the first rotating shaft 4.

    As the shape of the second group of kneading members 6 and 7, various rod-shaped members such as a square bar and a pad with a handle having a flat plate at the tip can be selected in addition to the hollow round bar already described. However, a round bar is inexpensive to manufacture and maintain. In the embodiment, a round bar is adopted, and the lengths of all the first kneading members 6 and the second kneading members 7 are made equal. Here, the lengths of the kneading members 6 and 7 are the kneading members 6-10 to 6-30 and 7-10 to 7-30 in the radial direction from the centers C42 and C52 of the eccentric portions 4c and 5c of the rotary shafts 4 and 5, respectively. It means the length to the tip.

When the lengths of the kneading members 6-10 to 6-30 and 7-10 to 7-30 are equal, the kneading members 6-10 to 6-30 and 7-10 to 7-30 are the first and second The kneading member is closest to the line connecting the centers C42 and C52 of the eccentric parts 4c and 5c on the same side of the line connecting the centers C42 and C52 of the eccentric parts 4c and 5c (described later). 6-10 to 6-30, 7-10 to 7-30, the maximum length that can be selected is the first and second kneading members 6-10 to 6-30, 7-10 to 7-30 at the tip On the plane perpendicular to the axial direction of the eccentric parts 4c, 5c, the widths (diameters in the case of round bars) seen from the axial direction of the first and second eccentric parts 4c, 5c are respectively equal to d, If the distance between the axes of the second rotating shafts 4 and 5 is CD,
The offset ΔP = 0 is (CD / 2) / cos 45 ° −d / 2.

    A large number of kneading members 6 and 7 are provided in the axial direction on spiral surfaces that are twisted in the same torsional direction around the center lines of the eccentric portions 4c and 5c of the first and second rotating shafts 4 and 5 (hereinafter referred to as the axial direction). When simply referred to as a spiral surface, it refers to a spiral surface centered on the center of the eccentric portion 4c or 5c of the rotating shaft). The leads of the double spiral surface on the eccentric portion 4c of the first rotating shaft 4 and the double spiral surface on the eccentric portion 5c of the second rotating shaft 5 are the same lead. As the spiral surface, either an equal lead or a variable lead can be adopted. Also, one of the double spiral surfaces on one eccentric portion 4c or 5c and the other one are different in 180 degrees + α phase. Here, α is a phase difference corresponding to the offset ΔP.

(Shaft seal protection effect)
The opening range of the raw material inlet 2a is in front of the kneading members 6-10 and 7-10 from the right side of the kneading members 6-2 and 7-2 as shown in FIG. is there. The kneading members 6-3 and 7-3 to 6-9 and 7-9 are located in the opening range of the inlet 2a. The kneading members 6-1, 7-1, 6-2, and 7-2 prevent the raw material from being directed to the shaft seal member 12 by the lead due to the kneading members being on the right-twisted spiral surface. The kneading members may be more than two sets in the axial direction.

(Twist direction of spiral surface where second group kneading member is arranged)
The kneading members 6-10 to 6-23 and 7-10 to 7-23 are on the spiral surface of right twist.

    The opening range of the outlet 2b of the kneaded product is substantially from the position of the end plate 2g to the positions of the kneading members 6-25 and 7-25. In the kneading members 6-23 and 7-23 to 6-24 and 7-24, the kneading members are provided with leads in the reverse direction. That is, it exists on the spiral surface of each left twist on the eccentric parts 4c and 5c of the 1st, 2nd rotating shafts 4 and 5. FIG. The lead on the left-handed spiral surface is the same as the lead on the right-handed spiral surface.

    The kneading members 6-24, 7-24 to 6-28, 7-28 on the outlet 2b of the kneaded material are spirals of right-handed twist on the eccentric parts 4c, 5c of the first and second rotating shafts 4, 5, respectively. Is on the surface. The lead on the right-handed spiral surface is the same as the lead on the right-handed spiral surface on which the kneading members 6-10 to 6-23 and 7-10 to 7-23 are arranged.

    The kneading members 6-28, 7-28 to 6-30, 7-30 are on the left-twisted spiral surfaces on the eccentric portions 4c, 5c of the first and second rotating shafts 4, 5, respectively.

    In the above, the kneading members 6-10 to 6-30 and 7-10 to 7-30 have a gap between the kneading members adjacent in the axial direction.

    The phases of the first group kneading members 6-1 to 6-9 and 7-1 to 7-9 are also shown by using the order numbers as in the second group phase display.

    FIGS. 2 (A) to 10 (Q) show the kneading members 6-1 to 6-17 and 7-1 to 7-17 at certain positions of the rotating shafts 4 and 5, respectively. For the kneading members 6-18 to 6-30 and 7-18 to 7-30, the view seen from the axial direction is not shown, but the view seen from the axial direction is the same as the above figure if the phases are the same. It is.

    The operation of the above configuration is described.

(Operation of the first group of kneading members)
When the electric motor 3 is energized, the gear 18 rotates, and the gear 18 transmits the rotation to the gears 16 and 17. Therefore, the rotary shafts 4 and 5 rotate at the same speed in the same direction. That is, the rotors 19 and 21 rotate at a constant speed in the directions of the arrows R1 and R2. Hereinafter, the rotation directions of the rotors 19 and 21 are indicated by the arrows R1 and R2 unless otherwise specified.

    The inner kneading members 6-1 and 7-1 of the first group kneading members 6-1 and 7-1 to 6-9 and 7-9 will be described. 15 to 23 are views of the inner kneading members 6-1 to 6-8 and 7-1 to 7-8 of the first group kneading member as viewed from the right side to the left side in FIG. However, only the kneading members 6-8b and 7-8b are shown for the kneading members 6-8 and 7-8. That is, kneading members 6-1 to 6-8b and 7-1 to 7-8b existing on one spiral surface on each of the eccentric portions 4c and 5c are shown.

    In each of the kneading members 6-1 to 6-8b and 7-1 to 7-8b, the lot No. Is attached. Adjacent kneading members 6-i, 6- (i + 1) and 7-i and 7- (i + 1) (i: 1... 7) are 45 degrees apart in the circumferential direction. Since the action of the kneading members at the same position in the axial direction of the eccentric portions 4c and 5c is the same, the lot number. The operation of one kneading member, that is, the kneading members 6-1 and 7-1 will be described.

    It is assumed that the raw material charged from the inlet 2a covers the rotors 19 and 21 below the inlet 2a.

    The position where the eccentric part centers C42 and C52 are located immediately above the rotation centers C41 and C51 of the rotating shafts 4 and 5 as shown in FIG. 15 will be described. In FIG. 15, when the rotors 19 and 21 rotate in the same direction of the arrows R1 and R2, the eccentric parts centers C42 and C52 of the eccentric parts 4c and 5c rotate around the rotational centers C41 and C51 of the rotary shafts 4 and 5, respectively. . The kneading members 6-1 and 7-1 rotate by the angle at which the eccentric part centers C42 and C52 rotate about the rotation centers C41 and C51, and at the same time, are displaced as the eccentric part centers C42 and C52 move.

    As shown in FIGS. 15 to 16, when the eccentric part center C42 rotates 22.5 around the rotation center C41 of the rotary shaft 4, the kneading member 6-1 turns to the right side. At the same time, the eccentric part center C42 is displaced rightward and downward from the position of FIG. The magnitude of this displacement is exsin 22.5 ° to the right and ex (1-cos 22.5 °) downward when the amount of eccentricity is ex.

    Further, as shown in FIGS. 15 to 16, the kneading member 7-1 rotates 22.5 degrees around the rotation center C51 from the lower right side of the rotation center C51 with the center C52 of the eccentric portion 5c as shown in FIG. It comes directly under the eccentric center C52. The displacement of the kneading member 7-1 at this time is the same in the same direction as the kneading member 6-1. That is, the same amount of displacement as the displacement of the eccentric centers C42 and C52 occurs in the kneading members 6-1 and 7-1.

    As described above, the kneading member of the embodiment of the present invention does not simply rotate around the rotation center of the rotation shaft as in the prior art, but also causes displacement. The tip of the kneading member 7-1 facing the inner wall of the trough 2 approaches the inner wall side of the trough 2 as the kneading member 7-1 moves from FIG. 15 to FIG.

    As shown in FIGS. 16 to 17, when the rotating shafts 4 and 5 further rotate 45 degrees in the R1 and R2 directions, the eccentric centers C42 and C52 rotate 45 degrees around the rotating shaft centers C41 and C51. The center of the kneading member 6-1 is at a position 45 degrees to the lower right through the eccentric center C42 from the lateral direction passing through the eccentric center C42 shown in FIG. The center of the kneading member 7-1 is at a position 45 degrees to the left and below the eccentric center C52 from the direction directly below the eccentric center C52 shown in FIG.

    In the state of FIG. 17, the kneading members 6-1 and 7-1 approach. However, since the rotary shafts 4 and 5 are rotating in the same directions R1 and R2, when the rotary shafts 4 and 5 are rotated from the position shown in FIG.

    When the rotary shafts 4 and 5 are rotated 45 degrees from the position of FIG. 17, the eccentric centers C42 and C52 are rotated 45 degrees around the rotation centers C41 and C51 to become the positions of FIG. The kneading member 6-1 is rotated immediately below the eccentric center C42, and the kneading member 7-1 has a center line passing through the eccentric center C52 and facing rightward toward the eccentric portion 4c. At this time, the kneading members 6-1 and 7-1 are displaced from the top to the bottom, respectively. The left and right direction once moves to the right in FIG. 17, but returns to the same position as in FIG.

    16 to 23 show the kneading members 6-1 to 6-8b and 7-1 to 7-8b at the positions where the rotary shafts 4 and 5 are rotated 45 degrees in the R1 and R2 directions.

    When the rotary shafts 4 and 5 are rotated from FIGS. 15 to 23 and the rotary shafts 4 and 5 are rotated 22.5 degrees from FIGS. 23 to 15, respectively, the rotors 19 and 21 are rotated once from the state of FIG. Become.

    The kneading members 6-2 to 6-8b and 7-2 to 7-8b move similarly to the kneading members 6-1 and 7-1.

    As shown in FIG. 15, the tips of the kneading members 6-2, 6-3, and 7-4, 7-5 are located farthest from the rotation centers C41, C51. The tips of the kneading members 6-6, 6-7 and 7-1, 7-8 are closest to the rotation centers C41, C51 of the rotary shafts 4, 5. The kneading members 6-4, 6-1 are between the kneading members 6-2, 6-3 to 6-6, 6-7, and 7-4, 7-5 to 7-1, 7-8. , 6-5, 6-8, and 7-3, 7-6, 7-7, 7-2, the distances from the rotation centers C41, C51 are kneading members 6-2, 6-3, and 7-4, 7-5, the kneading members 6-6, 6-7 and the rotation centers C41, 7-1, 7-8 at the tips of the kneading members 6-6, 6-7 are gradually closer than the distances from the rotation centers C41, C51 at the tips. It is larger than the distance from C51.

    The kneading members 6-1 and 7-1 located at the same position in the axial direction of the eccentric portions 4c and 5c have an action of mixing the raw materials with each other. That is, in FIG. 17, the kneading member 6-1 rotates around the rotation center C41, and the tip of the kneading member 6-1 draws an arc ab around the rotation center C41 from a to b.

    The raw materials in the arc ab are mixed by the kneading member 6-1. Immediately after the kneading member 6-1 has left the arc ab, the kneading member 7-1 rotates around the rotation center C51, and the tip of the kneading member 7-1 draws an arc ba around the rotation center C51 from b to a. . As a result of this rotation, the kneading member passes through the overlapping portion of the arc ab and the arc ba.

    The above is performed at the respective axial positions where the other kneading members 6-2 to 6-7 and 7-2 to 7-7 are present. As described above, the kneading members 6-1 to 6-7 and 7-1 to 7-7 are plate-like and the tips are located on the spiral surfaces around the eccentric portions 4c and 5c. And between the adjacent kneading members is spaced in the axial direction. Therefore, the raw materials to be mixed are sent from the kneading members 6-1 to 6-8b and 7-1 to 7-8b, but the adjacent kneading members are spaced apart in the axial direction. The mixture which has passed through between the axial directions is fed while being mixed by the kneading member adjacent to the downstream side in the feeding direction. As a whole, when kneading members 6-1 to 6-8b and 7-1 to 7-8b and further kneading members 6-9b and 7-9b are added, the raw materials are stirred and mixed, and overflowed. Send to plate 22 side.

    Each kneading member 6-2 to 6-8b and 7-2 to 7-8b is different from the action of the kneading members 6-1 and 7-1 in that the kneading members are separated from the inner wall surface of the trough 2 at the tip. The distance is different. The kneading members at the same position in the axial direction of the rotating shaft have the same distance from the eccentric centers C42 and C52 to the tip. Therefore, in the kneading members 6-2, 6-3, 7-4, and 7-5 in which the distance from the rotation centers C41 and C51 to the tip is larger than that of the kneading members 6-1 and 7-1, the kneading member The raw material in a place closer to the inner wall surface of the trough 2 is mixed than 6-1 and 7-1. The kneading members 6-5 to 6-8b having the same distance smaller than the kneading member 6-1 have a smaller range of raw materials to be mixed than the kneading member 6-1, and the kneading member 7- having the same distance larger than the kneading member 7-1. From 2 to 7-7, the range of raw materials to be mixed is larger than that of the kneading member 7-1.

    As described in FIG. 1, the radial lengths (rotational radii) r1 and r2 of the rotation centers C41 and C51 at the tips of the kneading members 6-1 to 6-9b and 7-1 to 7-9b vary in the axial direction. . In FIG. 1, r1 represents the radius of rotation of the kneading members 6-1 to 6-9b, and r2 represents the rotation radius of the kneading members 7-1 to 7-9b. For this reason, the kneading members 6-1 to 6-9 and 7-1 to 7-9 of the first group send raw materials from left to right in FIG. Therefore, even if the material is already added to the raw material and kneaded, even if it is solidified, the starting torque can be smaller than that of a kneading member having a constant rotation radius. This also applies to the second group of kneading members described later.

    Since the raw material just under the inlet 2a is not hydrated, it is only mixed. Even if an excessive amount of raw material is supplied from the inlet 2a, since the overflow plate 22 is present, the amount of the raw material mixed by the first group of kneading members is sent to the second group of kneading members is limited.

    The kneading members 6-8, 6-9 and 7-8, 7-9 protrude to both sides across the diameter of the eccentric portion 4c, and the kneading members 6-8 are 6-8a, 6-8b, 6-9. 6-9a and 6-9b, 7-8 7-7a and 7-8b, and 7-9 7-7a and 7-9b. The kneading member 6-9b is on the spiral surface around the eccentric portion 4c where the kneading members 6-1 to 6-8b are located. The kneading members 6-8a and 6-9a are present on the spiral surface around the eccentric portion 4c of the same lead that is 180 degrees out of phase with the spiral surface. The kneading member 7-9b is on the spiral surface where the kneading members 7-1 to 7-8b are located.

    The plate-like kneading members 6-8, 6-9 and 7-8, 7-9 are arranged along the plate surface on the spiral surface twisted in the right direction (double right-handed in this example). Therefore, the kneading members 6-8, 6-9, and 7-8, 7-9 simply knead and feed the raw material in the axial direction of the eccentric portions 4c, 5c. To 6-7 and 7-1 to 7-7, twice as much as each kneading member.

    Ignoring the kneading members 6-8a and 7-8a above, the kneading members 6-1 to 6-8b and 7-1 to 7-8b are on the single spiral surface around the eccentric portions 4c and 5c. What has been described is that the raw material is fed between the kneading members 6-7 to 6-8b or 7-7 to 7-8, and the stirring action is due to the action of the kneading members 6-7 or 7-7. Because.

    The movements of the kneading members 6-8, 6-9 and 7-8, 7-9 are similar to the actions of the second group of kneading members 6-10 to 6-23 and 7-10 to 7-23. Therefore, the explanation of the operation of the second group of kneading members is incorporated.

(Kneading member of the second group)
The locus on which the tip of the kneading member is drawn is a circle. The locus of the kneading member is in a circle. When the rotor rotates, the locus of the kneading member of one rotor overlaps with the locus of the kneading member of the other rotor. At this time, if it is assumed that the kneaded material around the rotor and the kneaded material around the rotor rotate integrally, the tip of the kneading member of the other rotor forms a locus in the kneaded material. As described above, the locus drawn on the kneaded material by the tip of the kneading member when the kneaded material rotates integrally with the rotor will be referred to in the following description.

    It is useful for clarifying the kneading action to clarify the locus drawn on the kneaded material by the tip of the kneading member as the kneaded material rotates with the rotor.

    Next, the second group of kneading members will be described. The state of kneading performed at one location in the inner shaft direction of kneading members 6-10 to 6-30 and 7-10 to 7-30 will be described. 24 to 33 show the state of kneading when the rotors 19 and 21 rotate once. FIG. 24 to FIG. 33 show the state of kneading of one place in the axial direction, for example, the kneading members 6-10 and 7-10. 24 to 33 are drawings (viewed in the direction of arrow J) as seen from the left to the right in FIG.

    The rotor 19 is such that the kneading members 6-10a and 6-10b swing with the eccentric amount ex, which is the distance between the rotation center C41 and the eccentric center C42, as the moving diameter. Each part of 10a, 6-10b is a point on a line in the radial direction from the rotation center C41, and each part draws a circle around the rotation center C1. For example, the tip of the kneading member 6-10b defines a circle C1. The tip of the kneading member 7-10a makes a circle C2. The tip of the kneading member 7-10b makes a circle C3. The tip of the kneading member 6-10a defines a circle C4. The diameter of the circle decreases in order from the circle C1 to the circle C4. The center lines C43, C53 in the radial direction of the kneading members 6-10a, 6-10b and 7-10a, 7-10b pass through the eccentric centers C42, C52. The eccentric portions 4c and 5c are circular with the eccentric centers C42 and C52 as centers. The kneading members 6-10a and 6-10b protrude with equal lengths on both sides across the diameter of the eccentric portion 4c. The kneading members 7-10a and 7-10b protrude with equal lengths on both sides across the diameter of the eccentric portion 5c.

    The other kneading members 6-8, 6-9, 6-11 to 6-30, and 7-8, 7-9, 7-11 to 7-30 are also eccentric parts 4c, It is on the eccentric centers C42 and C52 of 5c, and protrudes with an equal length on both sides across the diameter of the eccentric portions 4c and 5c. All the kneading members 6-1 to 6-30 and 7-1 to 7-30 have the same distance from the eccentric centers C42 and C52 to the tip. Therefore, the length of the kneading member is constant.

    Since the kneading members 6-1 to 6-30 and 7-1 to 7-30 are sequentially out of phase, the kneading members 6-i, 7-i (i: 1... 30 from the rotation centers C41, C51. The distance to the tip of) varies according to the phase difference. For example, regarding the kneading members 6-10a and 6-10b, since the angle formed by the center line C43 of the kneading member and the line L1 connecting the rotation center C41 and the eccentric center C42 is 22.5 °, it is from the rotation center C41. The distance to the tip of the kneading member 6-10b is the longest of the kneading members in the second group. The distance from the rotation center C41 to the tip of the kneading member 6-10a is one of the shortest in the kneading member. Accordingly, in FIG. 1, the tips of kneading members having the same phase, for example, the kneading members 6-10a and 6-18a, draw a circle C4 having the same diameter around the rotation center C41 when the rotor 19 rotates.

    In FIG. 24, the eccentric centers C42 and C52 are directly above the rotation centers C41 and C52. This position is the origin. At this time, the kneading member 6-10b is 22.5 degrees in the direction of the arrow R1 from the vertical line L1 passing through the rotation center C41, and the kneading member 7-10b is 22.5 in the direction of the arrow R2 from the horizontal line L2 passing through the rotation center C51. Tilted.

    As shown in FIGS. 24 to 25, when the rotors 19 and 21 are rotated 22.5 degrees from the origin position in the directions of arrows R1 and R2 around the rotation centers C41 and C51, respectively, the eccentric centers C42 and C52 are rotated about the rotation center C41. , C51 is rotated about the same angle 22.5. The kneading members 6-10a, 6-10b, 7-10a, and 7-10b have rotation centers with the eccentricity ex between the rotation center C41 and the eccentric center C42 and the eccentricity ex between the rotation center C51 and the eccentric center C52 as arms. Swing around C41 and C51 and push the kneaded material on the front in the rocking direction. A space is provided as a locus of movement of each kneading member 6-10a, 6-10b, 7-10a, 7-10b on the rear side in the rotational direction of each kneading member 6-10a, 6-10b, 7-10a, 7-10b. Although it is possible, the kneaded material is fed into this space.

    The feeding to the space as the locus of the movement is due to a part of the kneading members 6-10a, 6-10b, 7-10a, 7-10b from the front in the moving direction and the movement from the axial direction described below. It is infeed. Since the kneading member 6-10b has a larger radius of rotation at the tip (referred to as the distance from the center of rotation to the tip) than 6-10a, the kneading member 6-10b kneads the kneaded material in a wider range than 6-10a.

    The kneading members of the second group are on the double spiral surface of the rotor 19 where the kneading members 6-10a to 6-23a and 6-10b to 6-23b are right-twisted with the eccentric portion 4c of the rotating shaft 4 as the center. It is in. In the rotor 21, the kneading members 7-10 a to 7-23 a and 7-10 b to 7-23 b are respectively on a double spiral surface with a right-hand twist centered on the eccentric portion 5 c of the rotating shaft 5. Therefore, the kneaded material from 6-10a, 6-10b, 7-10a, 7-10b to 6-23a, 6-23b, 7-23a, 7-23b is sent from left to right in FIG. Has an effect. Therefore, lot no. The kneaded material receives an axial feed force from the inlet 2a side to the outlet 2b direction at each of the tenth to twenty-third kneading members.

    As shown in FIG. 25, when the rotors 19 and 21 are rotated 22.5 degrees from the origin position, the kneading members 6-10b and 7-10a approach each other. At this time, both the kneading members 6-10b and 7-10a form an angle of 45 degrees with respect to the line L2 connecting the centers of the rotary shafts 4 and 5. A gap t is provided in the direction of line L2 connecting the centers of the rotary shafts 4 and 5 between the tips of the kneading members 6-10b and 7-10a so that the tips of the kneading members 6-10b and 7-10a do not interfere with each other.

    When the rotors 19 and 21 are rotated from FIG. 25, the kneading member 6-10b is kneaded on the advancing side of the kneading member 6-10b on the locus of movement of the kneading member 7-10a (inside the arcs c21 and c22 of the circle C2). And the kneaded material sent from the axial direction in the outlet 2b side direction enters from the inlet 2a side. Since the kneading members 6-10a and 7-10b are separated from each other, they are kneaded without interacting with each other.

    As shown in FIG. 26, when the rotors 19 and 21 are rotated at an angle of 67.5 degrees from the origin position, the tip of the kneading member 7-10a rotated around the rotation center C51 from before the origin position is drawn on the circle C2. Part of the kneaded material in the locus of the kneading member 7-10a in the arcs c21 and c22 is overlapped and kneaded by the kneading member 6-10b. Then, until the kneading member 6-10b goes outside the arcs c21 and c22, the curve d is kneaded once by the kneading member 7-10a and the region e where the kneaded material is kneaded once by the kneading member 7-10a. A part of the product serves as a boundary of the region f where the material is kneaded twice by the kneading member 6-10b. Specifically, in the region f, the kneaded material that has been moved around from the front to the back in the moving direction of the kneading member 7-10a due to the movement of the kneading member 7-10a undergoes the second kneading and is sent in the axial direction. Receive the first kneading.

    As shown in FIG. 27, when the rotors 19 and 21 are rotated 112.5 degrees from the origin position (45 degrees from the position of FIG. 26), the kneading members 6-10b and 7-10b approach each other. At this time, both the kneading members 6-10b and 7-10b form an angle of 45 degrees with respect to the line L2 connecting the centers of the rotary shafts 4 and 5. The tips of the kneading members 6-10b and 7-10b do not interfere with each other. This is because, with reference to FIG. 25, when the kneading members 6-10b and 7-10a approach each other at an angle of 45 degrees with respect to the line L2, there is a gap t between the kneading members 6-10b and 7-10a. There is. On the other hand, in FIG. 27, when the kneading members 6-10b and 7-10b approach the line L2 at an angle of 45 degrees, the radius of rotation of the kneading member 6-10b is the same in FIGS. This is because the distance from the center C51 to the tip of the kneading member 7-10b (the radius of the circle C3) is smaller than the distance from the rotation center C51 to the kneading member 7-10a (the radius of the circle C2) in FIG.

    When the rotors 19 and 21 are slightly rotated from the position of FIG. 27, the kneading member 7-10b is moved to a point h on the arc C1 around the center C41 of the rotation shaft 4 of the locus of movement of the tip of the kneading member 6-10b. The tip of comes. When the rotors 19 and 21 further rotate, the kneading member 7-10b pushes out the kneaded material on the advance side of the kneading member 7-10b on the locus of movement of the kneading member 6-10b (arc C21, h of the circle C1) and the inlet 2a. The kneaded material sent from the axial direction in the outlet 2b side direction enters from the side. Since the kneading members 6-10a and 7-10a are separated from each other, they are kneaded without interacting with each other.

    As shown in FIG. 28, when the rotors 19 and 21 are rotated 157.5 degrees from the origin position, the kneading member 7-10b enters the locus i where the kneading member 6-10b moves from the point h. −10b A part of the kneaded material wrapping around from the front in the moving direction and the kneaded material sent from the inlet 2a side to the outlet 2b side into the moving path i of the kneading member 6-10b. A part is kneaded by the kneading member 6-10b and then kneaded by the kneading member 7-10b. Since the kneading members 6-10a and 7-10a are separated from each other, the kneading members 6-10a and 7-10a are kneaded without interacting with each other.

    In FIG. 28, the kneading member 7-10b goes deeper into the arc C1 than the arc C1 centering on the rotation shaft 4 which is the locus of the tip of the kneading member 6-10b. In FIG. 28, the kneading member 7-10b is closer to the kneading member 6-10b than the curve j, which is a locus drawn on the kneading material generated by kneading the tip of the kneading member 7-10b starting from the point h. Not. Simply speaking, only the kneading member 6-10b acts between the curve j and the kneading member 6-10b, and the kneading member 7-10b does not enter and does not act on kneading.

    As can be seen from the description of FIG. 24 to FIG. 28, the region of the curve j shown on the right side of the kneading members 6-10a and 6-10b shown in FIG. The region k is kneaded once, and the region k between the curve j and the circle C1 is a region where the kneaded material is overlapped and kneaded by the two kneading members 6-10b and 7-10b. However, what is kneaded in layers is a kneaded material that wraps around from the front in the moving direction of the kneading member 6-10b, and the kneaded material fed in the axial direction is kneaded for the first time.

    29, when the rotors 19 and 21 are rotated 202.5 degrees from the state of FIG. 24 (origin position) and 45 degrees from the state of FIG. 28, the kneading member 7-10b is centered on the rotation shafts 4 and 5. From the connecting line L2, the length of the kneading member 6-10b entering the locus of movement is reduced.

    At this time, the kneading members 6-10a and 7-10b approach each other. At this time, the kneading members 6-10a and 7-10b are both at an angle of 45 degrees with respect to the line L2 connecting the centers of the rotary shafts 4 and 5. The tips of the kneading members 6-10a and 7-10b do not interfere with each other. In any case, the circle on which the tip of the kneading member 6-10a is drawn is C4. Further, the circle drawn by the tip of the kneading member 7-10b is C3. As shown in FIG. 25, the circle drawn by the tip of the kneading member 6-10b that does not hit one end is C1, and the circle drawn by the tip of the kneading member 7-10a is C2. This is because the radii of the circles C1 and C2 are larger than the radii of the circles C3 and C4.

    When the rotors 19 and 21 are slightly rotated from the position shown in FIG. 29, the kneading member 7-10b is kneaded at the intersection o (O) of the circle C3 and the circle C4 centering on the center C51 of the rotation shaft 5 of the movement locus of the tip of the kneading member 7-10b. The tip of the member 6-10a comes.

    Further, when the rotors 19 and 21 are rotated from the position shown in FIG. 29, the kneading member 6-10a enters the locus m of the kneading member 7-10b moved from the intersection o of the circles C3 and C4. A part of the kneaded material that has come back from the front in the moving direction of the kneading member 7-10b into the trajectory m moved and a part of the kneaded material coming from the axial direction from the inlet 2a side to the outlet 2b side are kneading members. 6-10a. Since the kneading members 6-10b and 7-10a are separated from each other, they are kneaded without acting with each other.

    As shown in FIG. 30, when the rotary shafts 4 and 5 are rotated 45 degrees from FIG. 29, when the kneaded material moves together with the kneading member 7-10b at the tip of the kneading member 6-10a, The side closer to the kneading member 7-10b than the curve indicated by p is outside the locus of movement of the kneading member 6-10a. Simply speaking, between the curve p and the kneading member 7-10b, only the kneading member 7-10b acts, and the kneading member 6-10a does not enter and does not act on kneading.

    As shown in FIG. 30, when the rotors 19 and 21 are rotated 247.5 degrees from the origin position, the kneading member 7-10b is also rotated at the same angle, and the kneading member 6-10a is moved to the trajectory m 247 of the kneading member 6-10a. .A part of the trajectory q of 5 degree rotation enters. 29 to 30, the range where the kneading member 6-10a acts and the range where the kneading member 6-10a does not act when the kneading member 6-10a enters the movement path m of the kneading member 7-10b are bordered by the curve p depicted in FIG. It becomes.

    As can be seen from FIGS. 26 and 30, in FIG. 26, the kneading member 6-10 a is on the extension line L <b> 2 connecting the center of the rotating shafts 4, 5 facing the direction opposite to the rotating shaft 5 from the rotating shaft 4. It is in. In FIG. 30, the kneading member 6-10 a is on the line L <b> 2 and faces the rotating shaft 4 from the rotating shaft 4. That is, the kneading members 6-10a and 6-10b are switched to the left and right in FIG. 26 and FIG. 30 on the line L2 and its extension line with the shaft 4 as the center. Similarly, the kneading members 7-10a and 7-10b are switched up and down in FIGS.

    The arrangement of the kneading members 6-10a and 6-10b and 7-10a and 7-10b is offset to the right from the rotation centers C41 and C51. The direction of this offset is the direction of the line connecting the rotation centers C41, C51 and the eccentric centers C42, C52, and is 22.5 degrees from the line L2. In FIG. 26, the offset direction is diagonally upward to the right from the rotation centers C41 and C51. In FIG. 30, the offset is diagonally downward to the left from the rotation centers C41 and C51.

    Therefore, the region f where the kneading member 6-10b kneads the kneaded material enters the movement locus of the kneading member 7-10a shown in FIG. 26 enters the movement locus of the kneading member 7-10b shown in FIG. 6-10a is larger than the area | region r which knead | mixes a kneaded material. As described above, the range in which the kneading member provided in one eccentric portion at the same or substantially the same position in the axial direction enters the kneaded region of the kneading member provided in the other eccentric portion differs depending on the rotational position of the rotary shaft. Therefore, the kneaded product is not uniformly kneaded but kneaded while being changed in the degree of kneading.

    When the rotary shafts 4 and 5 are rotated 45 degrees and 292.5 degrees from the origin position from the state shown in FIG. 30, the kneading members 6-10a and 7-10a approach as shown in FIG.

    When the rotating shafts 4 and 5 are rotated 45 degrees from FIG. 31 and 337.5 degrees from the origin position, the kneading members 6-10 and 7-10 are orthogonal to each other in the vertical and horizontal directions, as shown in FIG.

    32, when the rotary shafts 4 and 5 rotate 22.5 degrees and 360 degrees from the origin position, the kneading members 6-10 and 7-10 become the same as the origin position in FIG. 24 as shown in FIG.

    Thus, as shown in FIG. 33, when the kneading members 6-10a, 6-10b, 7-10a, and 7-10b are rotated 360 degrees from FIG. 24 to FIG. 33, the locus of movement of the kneading members 6-10a and 6-10b is When the center of rotation C41 is viewed, each is within the circles C1 and C4 excluding the rotation axis 4. Similarly, the locus of movement of the kneading members 7-10a and 7-10b is within circles C2 and C3 excluding the rotating shaft 5.

    In the portion where the trajectories in the circles C2 and C3 overlap the trajectories of the kneading members 6-10a and 6-10b in the circles C1 and C4 while the rotors 19 and 21 rotate once, the kneading member 6-10a. 7-10a, 6-10a and 7-10b, 6-10b and 7-10a, and 6-10b and 7-10b are kneaded. Are kneaded by two different kneading members at the same position in the axial direction.

    Kneading members 6-10a, 6-10b, 7-10a, and 7-10b are mixed with two different kneading members during one rotation. The kneading material around the rotation axis rotates together with the rotation shaft. As shown in FIG. 33, the movement is as shown in the outer range of the curved curves v1, v2, w1, and w2 having different phases by 90 degrees. In addition, the code | symbol v1 is equivalent to the code | symbol used as j in FIG. 29, w1 is p in FIG. 30, and was used as d in FIG.

    The amber shape surrounded by the curves v1, v2 and w1, w2 is an irregular shape when viewed from the rotation centers C41 and C51, respectively, but is a point-symmetrical shape when viewed from the eccentric centers C41 and C51.

    The kneaded material inside the curves v1 and v2 and inside the w1 and w2 is kneaded by the rotation of the kneading member and the swinging rotation of the eccentric part. However, once solidified, the kneaded material may rotate while maintaining this shape. obtain.

    Accordingly, the rotor may be configured by stacking plate-shaped paddles surrounded by the curves v1, v2 and w1, w2 in the axial direction of the eccentric portions 4c, 5c.

    The kneaded materials in the curves v1 and v2 are kneaded only by the kneading members 6-10a and 6-10b. Further, the kneaded materials in the curves w1 and w2 are kneaded only by the kneading members 7-10a and 7-10b.

The range in which the kneaded material is kneaded twice by different kneading members in one axial direction is as follows. (1) When the kneading member 6-10b kneads after the kneading member 7-10a is kneaded (see FIGS. 24 to 27) The range in which the circle C1 cuts the circle C2.

    (2) When the kneading member 7-10b kneads after the kneading member 6-10b is kneaded (see FIGS. 27 to 29), the range in which the circle C3 cuts the circle C1.

    (3) When the kneading member 6-10a is kneaded after the kneading member 7-10b is kneaded (see FIGS. 29 to 31), the circle C4 cuts the circle C4.

    (4) When the kneading member 7-10a is kneaded after the kneading member 6-10a is kneaded (see FIGS. 31 to 33, 24, and 25), the circle C2 is cut by the circle C2.

    Kneading members 6-10b and 7-10a, 6-10b and 7-10b, 6-10a and 7-10b, and 6-10a and 7-10a. In this kneading mode, a part of the kneaded material kneaded by the kneading member previously kneaded is first kneaded by the kneading member that enters the locus of the kneaded kneading member.

    The range in which the circle C1 cuts the circle C2, the range in which the circle C3 cuts the circle C1, the range in which the circle C4 cuts in the circle C3, and the circle C4 in the range in which the two kneading members (1) to (4) act. The areas cut by C2 have different areas. Accordingly, kneading with a change during one rotation of the rotors 19 and 21 is performed at the opposing portion of the rotors 19 and 21 at one position in the axial direction.

(Discharge prevention effect)
In FIG. 1, the kneading members 6-24 and 7-24 are on the spiral surface of the left twist centering on the eccentric parts 4c and 5c including the kneading members 6-23 and 7-23. The kneading members 6-24 and 7-24 are directly above the edge of the outlet 2b near the inlet. The kneading members 6-24 and 7-24 generate a force to push back the kneaded material in the opposite direction against the kneaded material sent in the axial direction from the inlet 2a side to the outlet 2b side, so that the kneaded material on the inlet side is densely To do. Therefore, it is possible to prevent the kneading effect sent from the kneading members 6-10, 7-10 to 6-23, 7-23 from becoming sparse and lowering the kneading effect. Accordingly, the dense kneaded material is directed from the inlet 2a side to the outlet 2b side by the action of the kneading members 6-24 and 7-24.

(Rose effect)
From kneading members 6-25, 7-25 to 6-28, 7-28, these kneading members are on the spiral surface of a right-handed twist about the rotation shafts 4 and 5, so that the kneaded material is the right side in FIG. When the outlet 2b is opened at the lower side in response to the force sent to the direction, the outlet 2b is separated and falls from the outlet 2b.

(Outlet side shaft seal protection effect)
Near the shaft seal member 8 on the outlet 2b side, the kneading members 6-28, 7-28 to 6-30, 7-30 are located on the spiral surface of the left-handed twist centered on the eccentric portions 4c, 5c. Therefore, the kneaded material is pushed back, and the kneaded material falls toward the outlet 2b without pressurizing the shaft seal member 8 at least. Accordingly, the durability of the shaft seal member 8 can be increased without the kneading member being pushed toward the shaft seal member 8.

    Looking at the kneading effect, in the example of the present invention, the kneading members at the same position in the axial direction on each of the two rotating shafts rotate in the same direction at the same rotational speed with a 90-degree phase difference. The effect that is mixed is great. Particularly, in order to mix a part of the kneaded material with two kneading members having different lengths from the center of rotation to the tip at one end in the axial direction, and further kneading members at each axial position Since the length from the center of rotation to the tip is varied, the effect of kneading is great.

    In the above description, the kneading members 6 and 7 are provided at intervals in the axial direction. And the rotational speed of the rotating shafts 4 and 5 is the same and rotates in the same direction. And although the length from the rotation center of each kneading member 6 and 7 to the tip is various, each kneading member 6 and 7 can be made the same in length and size as an individual member. It should be noted that the thickness can be different in the axial direction. From the viewpoint of production, the kneading members 6 and 7 have the same length and thickness, thereby reducing the cost. The cross sections of the kneading members 6 and 7 are advantageously round bars, but they may be square bars or other cross sections.

    The kneading members 6-10 to 6-30 and 7-10 to 7-30 are attached to the eccentric portions 4c and 5c by using at least a round bar as a base of the kneading member and providing a screw on the round bar, and the eccentric shaft 4c. , 5c to be screwed into the screw. Alternatively, a flange that contacts the outer surface of the eccentric portions 4c and 5c may be provided at the root of the kneading member, and an attachment hole may be provided in the flange, and a bolt inserted through the attachment hole may be screwed into the eccentric portions 4c and 5c.

    In the embodiment, the trough 2 is a box-shaped trough body 2d, and the rotors 19 and 21 are provided in the trough body 2d so that the rotary shafts 4 and 5 are inserted through the trough 2 and supported outside the trough. Since the trough lid 2e is attached to the trough body 2d so that it can be opened and closed, maintenance of the kneading members 6 and 7 with respect to wear and damage can be performed simply by opening the trough lid 2e, and maintenance is easy.

(Eccentric effect)
Assuming that points a1 and a2 are points where a straight line extending between the rotation center C41 and the eccentric center C42 shown in FIG. 15 intersects the outer periphery of the eccentric portion 4c, the length from the rotation center C41 to the point a1 is from the rotation center c1. It is shorter than the length to the point a2. Therefore, when a circle a3 centering on the rotation center C41 and passing through the point a1 is drawn, the eccentric portion 4c is accommodated in the circle a3. A region that is not occupied by the eccentric portion 4c in the circle a3 is generated. These regions are a4 and a5. Regions a4 and a5 are bordered by an extension of the line connecting points a1 and a2.

    When the rotating shaft 4 rotates, the eccentric portion 4c rotates around the rotation center C41 and the eccentric amount ex as the moving radius. Then, it is pushed by the eccentric part 4c, and the kneaded material in the region a4 goes outward from the region a4 over the circle a3. On the other hand, the region a5 tends to be expanded by the rotation of the rotation center C41 of the eccentric portion 4c, so that the kneaded material tries to fill the region a5. Since the kneaded material is fed in the axial direction, the kneaded material extruded from the region a4 is kneaded by the kneading member. It is mainly the kneaded material sent in the axial direction that fills the region a5.

    The above operation is substantially uniform while the eccentric portion 4c makes one rotation around the rotation center C41. Therefore, since the eccentric portion 4c is present, mixing and kneading by stirring by the eccentric portion 4c itself is often performed over almost the entire length of the kneader. The eccentric portion 5c also has the same effect as the above-described effect of the eccentric portion 4c.

    Before stopping the operation of the kneading machine until, for example, tomorrow morning, normally, the kneading machine is idled without supplying raw materials. By continuing the idling operation, the kneaded material in the trough 2 is discharged from the outlet 2b by the action of sending the kneaded material in the axial direction by the rotors 19 and 21. At this time, when viewed from one kneading member in the axial direction, for example, kneading members 6-10 and 7-10, as shown in FIGS. 24 to 33, the tip of the kneading member 6-10b defines a circle C1. Even in the idling operation, a kneaded material that is not kneaded remains at least below the trough 2 between the circle C1 and the inner wall of the trough 2, and the tip of the kneading member 6-10b may be fixed when the kneaded material is solidified. is there. In particular, when the kneading member 6-10b comes to the lower part in the trough 2, the kneaded material to be solidified adheres and the kneaded material is solidified so that the tip of the kneading member 6-10b is fixed to the solidified kneaded material. Is done. The tip of the kneading member 6-10a defines a circle C4, but the diameter of the kneading member 6-10a is smaller than the circle C1 where the tip of the kneading member 6-10b is drawn, so that the kneading member 6-10a is separated from the kneaded material to be solidified.

    Similarly, since the circle C2 where the tip of the kneading member 7-10a is drawn is larger than the circle C3 where the tip of the kneading member 7-10b is drawn, the tip of the kneading member 7-10a is easily fixed to the kneaded material at the lower inner wall of the trough 2. However, the tip of the kneading member 7-10b is less likely to stick to the kneaded material on the lower inner wall of the trough 2.

    Conventionally, a plurality of kneading members protruding in the radial direction from the rotating shaft at the same position in the axial direction have the same radial length from the center of the rotating shaft to the tip in the case of a rod shape. Therefore, when the kneaded material remaining on the inner wall of the trough is solidified, the tip of a larger number of kneading members is more likely to stick to the kneaded material than in the case of this example. Therefore, it is necessary to make the starting torque for rotating the rotor significantly larger than the operating torque.

    According to this embodiment, since the number of kneading members to which the tip is fixed as the residual kneaded material is solidified after the idling operation of the kneading machine is reduced, the kneading machine is fixed near the dominant trough inner wall against the starting torque. Since the number of kneading members is small, it is easy to apply a large force to the fixed kneading members and the kneaded material. Therefore, the starting torque after fixing can be reduced.

(Other examples)
38 and 39 are side views of another embodiment of the rotor, FIG. 40 is a view as seen from an arrow R in FIG. 38, and FIG. 41 is a view as seen from an arrow S in FIG. FIG. 38 shows the rotor 21, and FIG. 39 shows the rotor 19. In this embodiment, the kneading members 6 and 7 of the first group are screw blades 6A and 7A. Other configurations are the same as those in the above-described embodiment.

    The screw blades 6A and 7A exist from the end plate 2f of the trough 2 to the vicinity of the kneading members 6-13 and 7-13 beyond the overflow plate 22 (see FIG. 1) (not shown). When there is no overflow plate 22, it exists up to the position where the second group of kneading members starts.

    The eccentric parts 4c and 5c are displaced from the rotation center of the rotary shafts 4 and 5 in the same direction (same phase) as in the previous embodiment. The screw blades 6A and 7A have a right-twisted spiral surface centering on the centers of the eccentric portions 4c and 5c of the rotary shafts 4 and 5, respectively. The pitches of the screw blades 6A and 7A are equal pitches, and both have the same lead.

The members arranged below the raw material inlet 2a are screw blades 6A and 7A having the same pitch, each having a single spiral surface that is twisted in the same twisting direction around the center of each eccentric portion, and the first rotating shaft. The first screw blades 6A provided on the four eccentric portions 4c and the second screw blades 7A provided on the eccentric portions 5c of the second rotating shaft 5 are in the same position in the axial direction. The screw threads of the first screw blade 6A are opposed to the thread valleys of the second screw blade 7A at the facing portions of these screw blades. Naturally, the thread valley of the first screw blade 6A is opposite to the screw thread of the second screw blade 7A at the opposing portion of these screw blades. The eccentric portion of the first rotating shaft 4 of the first screw blade 6A. The sum of the radius from the center of 4c and the radius from the center of the eccentric portion 5c of the second rotating shaft 5 of the second screw blade 7A is larger than the inter-axis distance between the first and second rotating shafts 4 and 5. The size is such that the first screw blade 6A does not interfere with the eccentric portion 5c of the second rotating shaft 5, or the second screw blade 7A does not interfere with the eccentric portion 4c of the first rotating shaft 4. Have.

    In the above, the outer diameters of the screw blades 6A and 7A are the same. However, the outer diameter of the screw blade 6A may be different from the outer diameter of the screw blade 7A.

    In the above, the pitch of the screw blades 6A and 7A may be variable. However, the pitches of the screw blades 6A and 7A must be equal at the same position in the axial direction. As an example in which the pitch of the screw blades 6A and 7A is variable, the pitch is gradually reduced toward the outlet side. Alternatively, the pitch can be gradually increased toward the exit side. When the pitch of the screw blades 6A and 7A is gradually decreased toward the outlet side, the raw material fed by the screw blades 6A and 7A is compressed. When the pitch of the screw blades 6A, 7A is gradually increased toward the outlet side, the raw material sent by the screw blades 6A, 7A is dispersed.

    When this screw blade is employed, the action of stirring or mixing the raw materials is more intermittent than when plate-like kneading members 6-1 to 6-9 and 7-1 to 7-9 are provided. However, the force to feed the raw material in the axial direction increases. Therefore, screw blades are suitable for raw materials that are difficult to feed, such as raw materials close to powder.

(Phase of eccentric part)
In the above-described embodiments, the phases of the eccentric portion 4c of the first rotating shaft 4 and the eccentric portion 5c of the second rotating shaft 5 are the same phase. This phase can also be different. For example, it is possible to select the phase difference between the eccentric parts 4c and 5c to be an angle other than 90 degrees. Thus, when there are the eccentric portions 4c and 5c, the kneading members 6 and 7 around the eccentric portions 4c and 5c are swung as in the embodiment, so that the kneaded material is well kneaded regardless of the phase difference. The starting torque when the kneaded product is fixed to the kneading member can be reduced.

    The kneading machine according to the embodiment having the kneading member at substantially the same position in the axial direction of the two lateral axis eccentric portions as described above is the rotation provided on the different shafts in the kneaded material fed in the axial direction at the same axial position. Since the kneading twice agitated by the kneading members having different radii is sequentially performed in the axial direction, there is an effect that they are well kneaded. Moreover, even if the internal kneaded material is solidified after the kneading machine is stopped, the number of kneading members having a large torque against the solidified kneaded material is small, so the starting torque after solidification is small.

    In the embodiment, an eccentric part is provided on the rotating shaft, and a kneading member having a fixed length is attached to the eccentric part so that each kneading member has a constant trough cross section in the axial direction. Nevertheless, since the length from the rotation center to the tip of the kneading member varies, the kneaded material is kneaded in various places in the axial direction, so that the kneading effect is great.

    By providing a gap between the kneading members in the axial direction as in the embodiment, even if there is a lump such as gravel in the kneaded material, the gravel is not crushed, so that it can be kneaded without causing an excessive load. Therefore, there is no fear of damaging the kneading member even if lump is mixed in EP ash and fly ash. Therefore, this kneader can also be used to mix gravel, sand and cement.

It is a top view of the rotor which attached the diagram which shows the rotation radius of a kneading | mixing member. (A) is an A arrow view of FIG. (B) is a B arrow view of FIG. (C) is a C arrow view of FIG. (D) is a D arrow view of FIG. (E) is an E arrow view of FIG. (F) is a F arrow view of FIG. (G) is a G arrow view of FIG. (H) is a H arrow view of FIG. (I) is an I arrow view of FIG. (J) is a view on arrow J in FIG. (K) is a K arrow view of FIG. (L) is a view on arrow L in FIG. (M) is a view on arrow M in FIG. (N) is a view on arrow N in FIG. (O) is an O arrow view of FIG. (P) is a P arrow view of FIG. It is Q arrow view of FIG. FIG. 3 is a view taken in the direction of arrow A in FIG. FIG. 12 is a view taken in the direction of arrow B in FIG. 11. FIG. 7 is a cross-sectional view of FIG. FIG. 14 is a view taken in the direction of arrow D in FIG. 13. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. It is a H arrow line view of FIG. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. FIG. 2 is a view taken in the direction of arrow J in FIG. 1. It is a side view of a kneading machine. It is YY sectional drawing of FIG. It is a top view of a kneading machine. It is Y1-Y1 sectional drawing of FIG. It is a side view of the other Example of a rotor. It is a side view of the other Example of a rotor. FIG. 39 is a view on arrow R in FIG. 38. FIG. 40 is a view on arrow S in FIG. 39.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Kneading machine 2 ... Trough 2a ... Inlet 2b ... Outlet 2c ... Upper opening 2d ... Trough main body 2e ... Trough lid 2f, 2g ... End plate
DESCRIPTION OF SYMBOLS 3 ... Electric motor 4, 5 ... Rotary shaft 6 ... Kneading member 6-1a, 6-30b ... Kneading member 6-1a-6-30a ... Kneading member 6-1b-6-30b ... Kneading member 6-i (in; 1 , 2, 3 ... 30) ... kneading member
7 ... kneading member 7-1, 7-30 ... kneading member 7-1a-7-30a ... kneading member 7-1b-7-30b ... kneading member 7-i (i; 1, 2, 3 ... 30) ... kneading member 8 ... shaft seal member 9, 11 ... bearing unit 12 ... shaft seal member 13 ... bed 14, 15 ... bearing device 16, 17, 18 ... gear 19, 21 ... rotor 22 ... overflow plate

Claims (5)

A parallel drive driven at the same rotational speed in the same direction by an electric motor in a trough having a raw material inlet on the upper surface of one end in the longitudinal direction and an outlet of a kneaded material kneaded with the raw material at the bottom of the other end. first two horizontal axis, a kneading machine having a rotor with a number of kneading member in the axial direction of the rotary shaft to the second rotary shaft,
Each rotating shaft having a journal portion supported by a bearing at both ends and an eccentric portion having a center line eccentric from the rotation center of the rotating shaft between both journal portions;
A large number of kneading members arranged in an axial direction and fixed to the eccentric portion of each rotating shaft;
In kneader having,
The kneading members are substantially the same in the axial direction of the eccentric portion of the first rotating shaft and the eccentric portion of the second rotating shaft on the double spiral surfaces twisted in the same twisting direction around the center of each eccentric portion. A first portion provided at an eccentric portion of the first rotating shaft that is provided at a position and protrudes on both sides across the diameter of the eccentric portion when viewed from the axial direction of the eccentric portion of each rotating shaft. The kneading member and the second kneading member provided at the eccentric portion of the second rotating shaft are 90 degrees out of phase in the circumferential direction of the eccentric portion, and the first rotating shaft of the first kneading member is eccentric. The sum of the length in the radial direction centered on the portion and the length in the radial direction centered on the eccentric portion of the second rotating shaft of the second kneading member is the axis of the first and second rotating shafts The first kneading member is longer than the distance between the first kneading member and the first kneading member so that the first and second kneading members do not interfere with each other during rotation. It does not interfere with the eccentric portion of the second rotary shaft length, or kneader which the second kneading member and having a length that does not interfere with the eccentric portion of the first first rotation axis. Kneading machine according to claim 1, a number of the kneading member is characterized in that it is arranged from the inlet side of the raw materials to the exit of the kneaded product towards the outlet side of the kneaded product. The kneading members arranged below the raw material inlets are screw blades of the same pitch provided on a single spiral surface twisted in the same twisting direction around the center of each eccentric part, and the first rotating shaft The first screw blade provided in the eccentric portion of the second screw blade and the second screw blade provided in the eccentric portion of the second rotating shaft are opposed to each other in the thread portion and the thread valley of the first screw blade. The sum of the radius from the center of the eccentric portion of the first rotating shaft of the screw blade and the radius from the center of the eccentric portion of the second rotating shaft of the second screw blade is the sum of the first and second rotating shafts. More than the distance between the shafts, the first screw blade has a size that does not interfere with the eccentric portion of the second rotating shaft, or the second screw blade has a size that does not interfere with the eccentric portion of the first rotating shaft. The kneading machine according to claim 2 characterized by things. The kneading members arranged below the raw material inlets are respectively arranged on a single spiral surface twisted in the same twisting direction around the center of each eccentric part, and the eccentric part of the first rotating shaft and the eccentricity of the second rotating shaft. The first kneading member and the first kneading member provided at the eccentric portion of the first rotating shaft that are provided at substantially the same position in the axial direction of the portion, protrude from one side of the eccentric portion of each rotating shaft, and are at the same position in the axial direction. The second kneading member provided at the eccentric portion of the second rotating shaft has a phase difference of 90 degrees in the circumferential direction of the eccentric portion, and the eccentric portion of the first rotating shaft of the first kneading member is the center. The sum of the length in the radial direction and the length in the radial direction around the eccentric portion of the second rotating shaft of the second kneading member is greater than the distance between the first and second rotating shafts. In the rotation, the first and second kneading members have a length that does not interfere with each other, and the first kneading member is in the second rotation. Eccentric portion and do not interfere the length of, or kneading machine according to claim 2 in which the second kneading member and having a length that does not interfere with the eccentric portion of the first rotary shaft. 5. The kneading machine according to claim 1, wherein the kneading member has a rod shape and is detachably fixed to an eccentric portion of each rotating shaft .

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