JP3159086U - Mixer - Google Patents

Abstract

[Problem] To provide a highly versatile mixer that can stably and uniformly disperse a mixed material having poor dispersibility and can be satisfactorily processed. SOLUTION: Mixing shafts 8a and 8b are respectively passed through left and right side walls 7 of a mixing tank 4 so as to be rotatably supported, and at their free ends, substantially L-shaped mixing blades are provided along the inner wall of the mixing tank 4. 11a and 11b are attached, and drive motors 14a and 14b are individually provided on the mixing shafts 8a and 8b, respectively, and the mixing shafts 8a and 8b are configured at arbitrary speeds and freely forward and reverse, respectively. 4 Chopper blades 17 for material crushing are exposed near the center. Then, when stirring and mixing the mixed material with poor dispersibility, the left and right mixing blades 11a and 11b are appropriately sized according to the mixed material while being effectively crushed and uniformly dispersed by the chopper blade 17. It can be processed with a mixed pattern and can be a highly versatile mixer that can handle a wide variety of mixed materials. [Selection] Figure 1

Description

  The present invention relates to a general-purpose mixer capable of stirring and mixing various mixed materials.

  Conventionally, a mixing tank having a substantially U-shaped side cross-section with a material inlet at the upper end is provided, and a single mixing shaft is passed between the opposing left and right side walls of the mixing tank so as to be rotatably supported. In addition, there is a mixer for stirring and mixing the mixed material in the mixing tank by attaching a plurality of mixing blades radially around the mixing shaft and rotating the mixing shaft by a drive motor. Such a mixer is widely used because it can effectively stir and mix the mixed material even though the structure is relatively simple.

  By the way, the mixer having the above-described configuration normally stabilizes a processed material having a certain property by stirring and mixing a specific mixed material for a predetermined time with a mixing blade of a mixing shaft rotating in a predetermined direction and speed. In many cases, it is used as a dedicated mixer to be obtained. However, if all mixers are dedicated according to the type and properties of the mixed material, it is disadvantageous in terms of cost and maintenance. Therefore, the present applicant has conducted extensive research and has versatility that can flexibly cope with agitation / mixing processing of various mixed materials as shown in Patent Document 1 (Japanese Patent Laid-Open No. 2009-11952). A high mixer is proposed.

  The mixer shown in the above-mentioned patent document 1 is rotatably supported with one mixing shaft passing through each of the left and right side walls of the mixing tank facing each other, while the free play of each mixing shaft protruding into the mixing tank. The end is provided with mixing blades formed in a substantially L shape along the inner wall of the mixing tank, and the mixing blades are slightly separated so that the tip portions of the mixing blades provided on the left and right mixing shafts do not interfere with each other. It is equipped with a drive motor that rotates and drives the mixing shaft separately for each mixing shaft, and a control device that individually controls the rotation operation of each driving motor, and the rotation direction and rotation of each mixing shaft Rotation operations such as speed and rotation time can be controlled individually and freely, and stirring and mixing processing can be performed with an appropriate mixing pattern according to the type and properties of the mixed material. Further, since the mixer does not have a large-diameter mixing shaft that spans the central portion of the mixing tank as in the conventional mixer, it is excellent in maintainability with less adhesion of the mixed material.

JP 2009-11952 A

  As described above, the mixer disclosed in Patent Document 1 is a versatile one that can be used for mixed materials of various types and properties. For example, a fiber material that is entangled with each other and easily causes aggregation, When mixing materials with poor dispersibility, such as highly viscous mud and sludge, which are prone to be mixed, simply change the mixing pattern such as the rotation direction and rotation speed of each mixing blade, and disperse sufficiently uniformly. It is envisaged that it may be difficult to process well.

  In view of the above points, the present invention provides a highly versatile mixer that can stably and uniformly disperse mixed materials with poor dispersibility even when they are stirred and mixed. The task is to do.

  In order to solve the above-mentioned problems, in the mixer according to claim 1 according to the present invention, a mixing tank having a material charging port at an upper end portion and having a substantially U-shaped side section is provided, and the mixing tank is opposed to the mixing tank. The left and right side walls are rotatably supported by passing through the mixing shafts so as to pass through the substantially central part of the mixing tank, and the free end parts of the mixing shafts protruding into the mixing tank are along the mixing tank side walls. And a blade portion that is bent in the axial direction from the tip of the arm portion so as to extend along the bottom wall of the mixing vessel and to the vicinity of the central portion in the axial direction of the mixing vessel. Along with L-shaped mixing blades, each mixing shaft is equipped with a drive motor for rotating the mixing shaft, and each mixing shaft is driven at an arbitrary speed and forward / reverse by drive operation of the drive motor. While being configured to be freely rotatable, it is substantially the center in the axial direction of the bottom wall of the mixing vessel Is supported so as not to interfere with the mixing blades of the respective mixing shafts, and is rotatably supported by passing through a rotation shaft disposed substantially perpendicular to the axis of the mixing shaft so as to project toward the substantially central portion of the mixing tank. A chopper blade for material crushing is attached to the free end portion of the rotating shaft, and a drive motor for rotating the rotating shaft is provided.

  According to the mixer of the first aspect of the present invention, the mixing tank having the material inlet at the upper end portion and having a substantially U-shaped side cross-sectional shape is provided, and the mixing tank is disposed on the opposite left and right side walls of the mixing tank. The mixing shaft penetrates the mixing shaft so as to pass through the substantially central portion, and is rotatably supported. The free end portion of each mixing shaft projected into the mixing vessel extends in the radial direction along the mixing vessel side wall. A substantially L-shaped mixing blade comprising an arm part and a blade part bent in the axial direction from the tip of the arm part and extending along the bottom wall of the mixing tank and near the central part in the axial direction of the mixing tank In addition to mounting, each mixing shaft is provided with a drive motor for rotating the mixing shaft, and each mixing shaft can be rotated at an arbitrary speed and freely forward and reverse by the drive operation of the drive motor. On the other hand, the mixing blades of the mixing shafts are disposed in the substantially central portion of the mixing tank bottom wall in the axial direction. So that the rotating shaft arranged in a direction substantially orthogonal to the axis of the mixing shaft passes through the rotating shaft so as to be freely rotatable and protrudes toward the substantially central portion of the mixing tank. Is equipped with a chopper blade for material crushing, and equipped with a drive motor that rotates the rotating shaft, so that various mixing patterns can be selected freely, and flexibly supports agitation and mixing processing of various mixed materials In addition, even when processing a mixed material with poor dispersibility, the material can be effectively crushed and uniformly dispersed with a chopper blade facing the center of the mixing tank. The mixer can be highly versatile.

It is a partially cutaway front view which shows one Example of the mixer based on this invention. It is a partially cutaway side view of FIG. It is a top view of FIG.

  In the mixer according to the present invention, a mixing tank having a substantially U-shaped side cross-sectional shape having a material inlet at the upper end portion is mounted on a gantry, and the mixing tank is disposed on the opposite left and right side walls of the mixing tank. One mixing shaft passes through each of the mixing shafts so as to pass through the substantially central portion, and is rotatably supported. At the free end of each mixing shaft protruding into the mixing tank, there is an arm part extending in the radial direction along the mixing tank side wall, and the mixing tank bottom wall is bent in the axial direction from the tip of the arm part. Is attached with a substantially L-shaped mixing blade consisting of a blade portion extending to the vicinity of the central portion in the axial direction of the mixing tank, and suitably stirred while scraping off the material adhering to the inner wall of the mixing tank during rotation. -It can be mixed and has excellent maintainability. In addition, a drive motor for rotating the mixing shaft is individually provided for each mixing shaft, and each of the mixing shafts is independently controlled at an arbitrary speed and forward by individually controlling these driving motors. It is configured so that it can rotate freely.

  On the other hand, in the substantially central portion of the mixing tank bottom wall in the axial direction, a rotation shaft arranged so as not to interfere with the mixing blades attached to the mixing shafts and in a direction substantially orthogonal to the mixing shaft axis is passed through. A chopper blade for material crushing is attached to the free end of the rotating shaft that is freely supported and protruded toward the center of the mixing tank, and this rotating shaft is driven to rotate at a relatively high speed. A drive motor is provided separately from that for the mixing shaft. In the mixer having the above-described configuration, there is no large-diameter mixing shaft in the vicinity of the central portion of the mixing tank, unlike the conventional mixer, so that the chopper blades for material crushing can be arranged without hindrance.

  And in the mixer having the above configuration, for example, when stirring and mixing a mixed material having poor dispersibility, such as fiber material, high-viscosity sludge, sludge, etc., first, depending on the type and properties of the mixed material, An appropriate mixing pattern is determined by adjusting the rotation speed, rotation direction, rotation time, and the like for each mixing shaft to which the mixing blades are attached, and set and registered in advance on, for example, an operation panel for mixer operation. In addition, during rotation of the mixing shaft, the rotation shaft to which the chopper blades are attached is set to rotate simultaneously.

  When an appropriate mixing pattern according to the processing material is determined, a predetermined amount of the mixing material is put into the mixing tank, and the mixing blades of the left and right mixing shafts are respectively set to a desired speed and direction based on the determined mixing pattern. At the same time, the chopper blades that face the vicinity of the center of the mixing tank are rotated at high speed. At this time, even if the mixed material is poorly dispersible, such as a fiber material, high-viscosity sludge, sludge, etc., while being effectively finely crushed and uniformly dispersed by the chopper blade, Stirring and mixing can be satisfactorily performed with an appropriate mixing pattern by the left and right mixing blades, and a high-quality mixture free from material aggregation and lumps can be obtained efficiently.

  In this way, the mixing blades formed so as not to interfere with each other are attached to the free ends of the mixing shafts respectively provided on the left and right side walls facing each other of the mixing tank, and each mixing shaft is individually provided with a drive motor, Since the chopper blade for material crushing is faced near the center of the mixing tank, various mixing patterns can be selected freely, and it can be used flexibly when stirring and mixing various mixed materials. Even when processing a mixed material with poor dispersibility, the material can be effectively crushed and dispersed by the chopper blades facing the vicinity of the center of the mixing tank. The agglomeration and the occurrence of lumps are suppressed, and the treatment can be performed satisfactorily.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the figure, reference numeral 1 denotes a general-purpose mixer according to the present invention, in which a material input port 2 is provided at the upper end portion and a damper type discharge gate 3 is provided at the lower end portion so as to be openable and closable. The mixing tank 4 is mounted on a gantry 6 with casters 5, and mixing shafts 8 a and 8 b are passed through the left and right side walls 7 of the mixing tank 4 so as to pass substantially the center of the mixing tank 4. And a pair of blade fixed arms 10 extending in the radial direction at the free ends of the mixing shafts 8a and 8b slightly protruded into the mixing tank 4 while being rotatably supported by the bearing 9. Are fixed at symmetrical positions with respect to the axis.

  11a and 11b in the drawing are mixing blades, and an arm portion 12 extending in the radial direction from the free end position of the mixing shafts 8a and 8b along the side wall 7 of the mixing tank 4, and the tip of the arm portion 12 The mixing blade 4 is formed in a substantially L shape that is bent in the axial direction along the bottom wall of the mixing tank 4 and extends to the vicinity of the central part of the mixing tank 4 in the axial direction. The arm portions 12 of 11a and 11b are detachably attached to the blade fixing arm 10 fixed to the mixing shafts 8a and 8b with bolts or the like. The rotation trajectory of the mixing blades 11a and 11b generated when the mixing shafts 8a and 8b are rotated cleans the material adhering to the inner wall along the inner wall of the mixing tank 4 having a substantially U-shaped side section. The agitating / mixing process can be suitably performed while scraping, and the rotation trajectories do not cross each other and do not cause interference.

  The mixing blades attached to the mixing shafts 8a and 8b are not necessarily limited to the shapes shown in the drawings. For example, several shapes suitable for grinding or granulation processing are prepared. The blades may be appropriately replaced depending on the purpose of processing, but as described above, a blade having a shape such that at least the rotation trajectories at the time of blade rotation do not cross each other is adopted. In the above embodiment, the blade fixing arm 10 is fixed to the free ends of the mixing shafts 8a and 8b, and the mixing blades 11a and 11b are attached to the mixing shafts 8a and 8b via the blade fixing arm 10. However, the base ends of the arm portions 12 of the mixing blades 11a and 11b may be directly attached to the free ends of the mixing shafts 8a and 8b.

  Further, drive motors 14a, 14b for driving the mixing shaft are individually provided for the mixing shafts 8a, 8b, and each mixing shaft 8a is connected via a chain 15 in accordance with the driving operation of each driving motor 14a, 14b. , 8b are configured to be rotatable at arbitrary speeds (for example, about 30 to 80 rpm) and forward and backward. In addition, an operation panel (not shown) for operating and controlling the mixer 1 has an appropriate mixing pattern (for example, each mixing shaft 8a, 8b is rotated at an arbitrary speed depending on the type and properties of the mixed material). And one or both of them can be accelerated or decelerated at appropriate timing, or both can be rotated in the same direction, or one or both can be rotated in reverse at appropriate timing, etc.) By selecting and operating an arbitrary mixing pattern from the registered mixing patterns, the mixing blades 11a and 11b of the mixing shafts 8a and 8b can be rotated by a desired rotation operation.

  On the other hand, in the substantially central part of the bottom wall of the mixing tank 4, as can be seen from FIG. 1, the mixing shafts 8a and 8b are arranged so as not to interfere with the mixing blades 11a and 11b attached to the mixing shafts 8a and 8b. A rotary shaft 16 arranged substantially perpendicular to the axis is passed through and rotatably supported, and the free end portion of the rotary shaft 16 protruding toward the center of the mixing tank 4 is used for material crushing. A chopper blade 17 having a substantially propeller shape is attached, and a drive motor 19 for rotating the rotating shaft 16 through a chain 18 at a relatively high speed (for example, about 1800 to 3600 rpm) is provided. In the mixer 1 of this configuration, the large diameter mixing shaft does not exist near the center of the mixing tank 4 unlike the conventional mixer, and therefore the chopper blades 17 for material crushing are arranged without any trouble as described above. It is possible.

  When the mixer 1 having the above-described configuration is used to stir and mix a mixed material having poor dispersibility, such as fiber material, high-viscosity sludge, sludge, and the like, first, depending on the type and properties of the mixed material Select an appropriate one from several mixing patterns consisting of combinations of rotation speed, rotation direction, rotation time, etc. of the left and right mixing blades 11a, 11b and the chopper blade 17 that have been set and registered in advance on the operation panel, etc. decide. When an appropriate mixing pattern is determined, a predetermined amount of mixed material is introduced into the mixing tank 4, and the mixing blades 11a and 11b of the left and right mixing shafts 8a and 8b are moved to desired speeds based on the determined mixing pattern. -While rotating in the direction, the chopper blade 17 facing the central portion of the mixing tank 4 is simultaneously rotated at a relatively high speed.

  At this time, even if the mixed material has poor dispersibility, the chopper blades 17 are effectively finely crushed and uniformly dispersed while rotating in a mixed pattern according to the type and properties of the material. The left and right mixing blades 11a and 11b can be favorably stirred and mixed, and a high-quality mixture free from material aggregation and lumps can be obtained efficiently. Thus, when the stirring / mixing process is completed according to the mixing pattern, the discharge gate 3 is opened and the mixture is discharged from the mixing tank 4 to prepare for the stirring / mixing process of the next batch as necessary.

  As described above, the mixing shafts 8a and 8b are provided on the left and right side walls 7 facing each other of the mixing tank 4, and the mixing blades 11a and 11b formed so as not to interfere with each other are attached to the mixing shafts 8a and 8b. Since the drive motors 14a and 14b are individually provided for the 8a and 8b, the mixing blades 11a and 11b can be freely rotated at any rotation speed, rotation direction, and rotation time, respectively. An appropriate mixing pattern can be selected according to the material, and a highly versatile mixer can be obtained. Further, the chopper blades 17 for material crushing are faced near the center of the mixing tank 4, for example, dispersion. Even when a mixed material having poor properties is processed, the material can be effectively crushed and dispersed, and the material can be satisfactorily processed by suppressing the occurrence of aggregation and lumps.

DESCRIPTION OF SYMBOLS 1 ... Mixer 2 ... Material injection port 3 ... Discharge gate 4 ... Mixing tank 6 ... Base 7 ... Side wall 8a, 8b ... Mixing shaft 11a, 11b ... Mixing blade 12 ... Arm part 13 ... Blade part 14a, 14b ... Drive motor 16 ... Rotating shaft 17 ... Chopper blade 19 ... Drive motor

Claims (1)

  A mixing tank having a material inlet at the upper end and a substantially U-shaped side cross-section is provided, and the mixing shaft is passed through the left and right side walls of the mixing tank so as to pass the substantially central part of the mixing tank. A free-end portion of each mixing shaft that is rotatably supported and protruded into the mixing tank has an arm portion that extends radially along the side wall of the mixing tank, and is folded in the axial direction from the tip of the arm portion. A substantially L-shaped mixing blade consisting of a blade portion that is bent and extends along the bottom wall of the mixing tank and extending to the vicinity of the central portion in the axial direction of the mixing tank is attached, and a driving motor for rotating the mixing shaft is mixed. Each mixing shaft is individually provided on the shaft, and each mixing shaft can be rotated at an arbitrary speed and freely rotating in the forward and reverse directions by the driving operation of the drive motor, while at the substantially central portion of the mixing tank bottom wall in the axial direction. Does not interfere with the mixing blades of the mixing shafts and is almost straight with the mixing shaft axis. A chopper blade for material crushing is attached to the free end portion of the rotating shaft that passes through the rotating shaft arranged in the direction and is rotatably supported and protrudes toward the substantially central portion of the mixing tank. A mixer comprising a drive motor for rotationally driving the mixer.

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