JP2013188672A - Mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mixer having low rotary resistance of an agitator, causing little biting of a material, and allowing stable kneading processing.SOLUTION: An agitator 13 with an approximately square-shaped frame type is fixed to the lower end of a driven shaft 11 revolving around a drive shaft 8 while rotating, the agitator 13 is formed in such a manner that the outer peripheral edge of the rotation track of the agitator 13 approaches the inner peripheral wall of an agitating tank 4, and a pair of plate-like rake-up blades 15 formed by being tilted by approximately 45° so as to separate gradually from a bottom wall of the agitating tank 4 in relation to the rotation direction are provided at both ends of a horizontal member 14 of the lower end of the agitator 13. Furthermore, when kneading a material by the agitator 13, biting of the material can be suppressed, and a part of the material can be easily made to pass through to rear of the agitator 13, and the rotary resistance of the agitator 13 can be effectively reduced without excessively staying the material in front of the agitator 13.

Description

  The present invention relates to a portable mixer for kneading various materials supplied into a pan-shaped stirring tank with a stirring tool, and particularly configured to revolve along the inner peripheral wall of the stirring tank while rotating the stirring tool. Related to the mixer.

  The plaster used for the outer walls of houses and buildings, for example, is made into paste by adding koji or hemp fibers called “susa” to slaked lime, which is the main component, and kneading with a predetermined amount of water. It is applied by applying a suitable thickness or spraying on the wall surface to be constructed. At this time, the kneading process is a portable mixer that has a relatively simple structure and is easy to handle, can efficiently knead various materials, and can be easily carried to the work site. A mixer generally called a planetary turbine mixer or a planetary mixer as shown in Document 1 (Japanese Patent Laid-Open No. 2009-279475) or Patent Document 2 (Japanese Patent Laid-Open No. 2011-88034) can be suitably employed.

JP 2009-279475 A JP 2011-88034 A

  By the way, in producing the plaster, when slaked lime and “susa” which are raw materials are kneaded and treated with water, etc., it has very high viscosity, and “susa” in the material is mixed between the stirrer and the inner wall of the stirring tank. It is easy to bite into a gap or the like, and sometimes a large load is applied to the drive motor. In addition, in such a conventional mixer, a power supply of 200V specification is generally mainstream, but on the other hand, there is a voice that desires a 100V specification that is relatively easy to secure and easy to handle at many work sites. However, there is a possibility that power may be insufficient due to the above reasons even if it is easily set to 100V specification, and there is a concern that it may be stopped due to overload in some cases. Therefore, in a mixer that manufactures plaster or the like having such a characteristic that it is highly viscous and easy to bite, for example, the rotational resistance of the stirrer is reduced and the biting of the material also occurs. As a difficult structure, it is preferable to suppress the load on the drive motor as much as possible.

  In view of the above-described points, an object of the present invention is to provide a mixer in which the rotational resistance of a stirrer is small and the biting of a material hardly occurs and a stable kneading process is possible.

  In order to solve the above-mentioned problems, in the mixer according to claim 1 according to the present invention, a pan-type stirring tank is mounted on a machine base having a caster at the lower end, and the drive is disposed above the stirring tank. The drive shaft of the motor is suspended to the central portion of the agitation tank, and a concentric fixed gear is loosely fitted to the drive shaft and fixed to the agitation tank, and a support member disposed horizontally is fixed to the lower end of the drive shaft. The driven shaft is rotatably supported at the edge of the support member, and the driven gear fixed to the upper end of the driven shaft is linked to the fixed gear so that the support member is supported by the rotation of the drive shaft. In the mixer in which the driven shaft revolves around the drive shaft while rotating, a substantially square frame-shaped stirrer is fixed to the lower end portion of the driven shaft, and the stirrer has a rotating diameter of the stirrer. The outer peripheral edge of the rotation path of the stirring tool is close to the inner peripheral wall of the stirring tank On the other hand, the horizontal member at the lower end of the stirring tool is positioned at a height close to the bottom wall of the stirring tank, and the both ends of the horizontal member are gradually separated from the bottom wall of the stirring tank with respect to the rotation direction. A pair of plate-like scraping blades that are inclined is provided.

  The mixer according to claim 2 is characterized in that an inclination angle of the scraping blade is set to 45 ° with respect to a bottom wall of the stirring tank.

  According to the mixer of the first aspect of the present invention, a substantially square frame-shaped stirrer is fixed to the lower end of the driven shaft that revolves around the drive shaft while rotating, and the rotation trajectory of the stirrer A pair of plates that are formed so that the outer peripheral edge is close to the inner peripheral wall of the agitation tank, and the horizontal members at the lower end of the agitation tool are inclined so as to gradually move away from the bottom wall of the agitation tank with respect to the rotation direction. When the stirrer is rotated, a part of the material can easily get over the scooping blade and slide to the back of the stirrer from the opening inside the generally square-shaped frame. The rotation resistance of the stirrer can be reduced without causing the material to stay excessively in front of the stirrer, and the material near the bottom wall of the stirrer that may be bitten is also scraped upward by the lifting blade. To prevent biting and to drive motor Load can be stably kneaded with effectively suppressed.

  According to the mixer of the second aspect, since the inclination angle of the scraping blade is 45 ° with respect to the bottom wall of the stirring tank, the material can be controlled with moderate force while suppressing the rotational resistance of the scraping blade. And kneading can be performed satisfactorily.

It is a partially cutaway front view showing an embodiment of a mixer according to the present invention. It is a partially cutaway top view of FIG. It is an expansion perspective view of a stirring tool.

  In the mixer according to the present invention, a substantially square frame-shaped stirrer is fixed to the lower end portion of the driven shaft that revolves around the drive shaft while rotating as the drive shaft rotates. The tool is formed so that its rotation diameter is approximately the radial length of the stirring tank, and the outer peripheral edge of the rotation track of the stirring tool is close to the inner peripheral wall of the stirring tank. Kneading is possible. In addition, the horizontal member constituting the lower end of the substantially square-shaped stirring tool is positioned at a height close to the bottom wall of the stirring tank, and both ends of the horizontal member are at the bottom of the stirring tank with respect to the rotation direction. A pair of plate-like scraping blades, for example, inclined at about 45 ° so as to be gradually separated from the wall, are provided.

  And when kneading a material such as plaster in the mixer having the above configuration, the stirring tool at the lower end of the driven shaft that revolves along the inner peripheral wall of the stirring tank while rotating at a predetermined speed as the drive shaft rotates. The material in the stirring tank is kneaded efficiently. At this time, for materials such as stucco, the material becomes highly viscous with the kneading process, and "susa" contained in the material bites into the gap between the stirring tool and the inner wall of the stirring tank. Although it is easy, since the scraping blade is inclined obliquely, the occurrence of biting of the material can be reduced, and a part of the material can easily get over the scraping blade, and the stirring tool is formed in a substantially square shape Can be scraped out from the opening inside the frame to the rear side of the stirring tool, thereby suppressing the rotational resistance of the lifting blade without excessive retention of the material in front of the stirring tool. By making the inclination angle of about 45 °, it is possible to stir the material with an appropriate force, and the material can be kneaded well.

  In this way, while maintaining the kneading efficiency of the stirrer, the rotational resistance can be reduced appropriately, so the load on the drive motor can be effectively suppressed, and it has a high viscosity such as stucco and is easy to bite It is possible to perform a kneading process satisfactorily. In addition, since the agitator has a very simple configuration, the apparatus cost is low, the adhesion of material is small, the maintenance is excellent, and it is particularly effective as a general-purpose mixer that is carried to the site and used.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 in the figure is a mixer capable of suitably kneading a material having high viscosity and easily biting, such as plaster, and a machine base having a caster 2 for movement / conveyance at the lower end. 3, a pan-shaped stirring tank 4 is mounted, and a support frame 5 formed so as to straddle the stirring tank 4 is disposed above the stirring tank 4. It is made to detachably latch with respect to the upper edge edge of the stirring tank 4 with the latching piece 6 with which the part was equipped.

  In addition, a drive motor 7 of 100 V specification, for example, is disposed above the support frame 5, and the drive shaft 8 of the drive motor 7 is suspended toward the center of the lower stirring tank 4. A fixed gear 9 concentric with the drive shaft 8 is loosely fitted, and the fixed gear 9 is fixed to the support frame 5 so as to be fixed to the stirring tank 4. A horizontally-supported plate-like support member 10 is fixed to the lower end portion of the drive shaft 8, and a driven shaft 11 suspended parallel to the drive shaft 8 is rotatably attached to the end edge portion of the support member 10. A driven gear 12 having a predetermined diameter fixed to the upper end of the driven shaft 11, for example, a smaller diameter than the fixed gear 9, is engaged with the fixed gear 9 to be interlocked with the driven shaft 8. Accordingly, the driven shaft 11 pivotally supported by the support member 10 is configured to revolve around the drive shaft 8 while rotating at a predetermined speed.

  In the present embodiment, in order to suppress the load on the drive motor 7, one driven shaft 11 that is pivotally supported by the support member 10 is used. However, for example, two or more driven shafts are used depending on the properties of the material. It is advisable to adjust appropriately within the possible range. In the present embodiment, the driven gear 12 has a diameter smaller than that of the fixed gear 9 so that the rotation speed of the driven shaft 11 is higher than the revolution speed. The gear ratio of the fixed gear 9 may be appropriately determined according to the type and properties of the material to be kneaded. Further, as a means for interlocking the driven gear 12 at the upper end portion of the driven shaft 11 and the fixed gear 9 at the lower end portion of the drive shaft 8, each gear is directly meshed with this embodiment. You may make it interlock | link through the transmission means.

  As shown in FIG. 3, a frame-shaped stirring tool 13 that is largely opened in a substantially rectangular shape is fixed to the lower end portion of the driven shaft 11, and the stirring tool 13 has a rotational diameter of the stirring tank 4. The outer circumferential edge of the rotation path of the stirrer 13 is formed so as to be close to the inner peripheral wall of the stirrer 4, and the material in the stirrer 4 is kept all the way when the stirrer 13 rotates. In this way, kneading treatment is possible. Further, the horizontal member 14 constituting the lower end portion of the substantially square-shaped stirring tool 13 is disposed at a height position close to the bottom wall of the stirring tank 4, and both ends of the horizontal member 14 are arranged in the rotational direction. On the other hand, a pair of plate-shaped scrapes formed at a relatively low height, for example, about 3 to 5 cm, so as to be gradually separated from the bottom wall of the stirring vessel 4 Raising blades 15 are provided.

  A scraper 16 scrapes off and peels off the material adhering / remaining on the inner peripheral wall of the stirring tank 4, and has a sliding member 18 fixed to the lower end of the arm 17 fixed to the horizontal member 10, and The outer peripheral edge of the sliding member 18 is brought into contact with the inner peripheral wall of the agitation tank 4, and the sliding member 18 slides along the inner peripheral wall of the agitation tank 4 as the drive shaft 8 rotates. The material adhering / remaining on the inner peripheral wall 4 is scraped off and scraped to the center side of the stirring tank 4. The bottom wall of the agitation tank 4 is provided with a discharge gate 19 for discharging the material that has been kneaded so as to be opened and closed.

  Then, when kneading a material such as plaster supplied into the stirring tank 4 in the mixer 1 having the above-described configuration, the drive shaft 8 is rotated at a predetermined speed by the drive motor 7 and is rotated accordingly. The follower which revolves the stirring tool 13 along the inner peripheral wall of the stirring tank 4 together with the support member 10 (in the direction of arrow A in FIGS. 2 and 3) and meshes with the fixed gear 9 as the stirring tool 13 revolves. The driven gear 12 at the upper end of the shaft 11 rotates to rotate the stirring tool 13 at a predetermined speed, for example, about 1.5 to 3 times the revolution speed based on the gear ratio between the fixed gear 9 and the driven gear 12. (Arrow B direction in FIGS. 2 and 3). Thus, the material supplied into the stirring tank 4 is effectively repeatedly kneaded by the stirring tool 13 that revolves along the inner peripheral wall of the stirring tank 4 while rotating at high speed.

  At this time, in the case of materials such as plaster, although it has a high viscosity accompanying the kneading process, “susa” contained in the material is likely to bite, but the scraping blade at the lower end of the stirring tool 13 15 is inclined obliquely with respect to the rotation direction so that the material in the vicinity of the bottom wall of the stirring tank 4 can easily flow upward, and the height width thereof is also relatively low. The occurrence of biting of the material inside can be reduced, and a part of the material can easily pass over the scraping blade 15 and be scraped out to the rear side of the agitator 13 as shown by an arrow C in FIG. As a result, the rotational resistance of the scraping blade 15 can be suppressed without excessively retaining material on the front side of the scraping blade 15 of the stirrer 13, while the inclination angle of the scraping blade 15 is about 45 °. As a result, moderate force In the material can be performed satisfactorily possible with it and kneading treatment of the material to be stirred.

  As described above, the mixer 1 employs the stirrer 13 having the structure as described above, so that the rotational resistance is small and the load on the drive motor 7 can be reduced. For example, a highly viscous material such as plaster is kneaded. Even when the drive motor 7 is 100V specification, it is possible to avoid a situation where the drive motor 7 is overloaded and stopped as much as possible, and it is easy to handle as a general-purpose mixer brought to the site. Is preferred. Moreover, since the structure of the stirring tool 13 is very simple, it is difficult for material to adhere to it, and even if it adheres, it can be easily removed and is excellent in maintainability.

DESCRIPTION OF SYMBOLS 1 ... Mixer 3 ... Caster 3 ... Machine stand 4 ... Stirring tank 7 ... Drive motor 8 ... Drive shaft 9 ... Fixed gear 10 ... Supporting member 11 ... Driven shaft 12 ... Driven gear 13 ... Stirrer 14 ... Horizontal member 15 ... Scooping up Feather

Claims (2)

  A pan-shaped stirring tank is mounted on a machine base having a caster at the lower end, and the drive shaft of a drive motor disposed above the stirring tank is suspended to the central portion of the stirring tank. The drive shaft is concentric with the drive shaft. A fixed gear is loosely fitted and fixed to the agitation tank, and a support member disposed horizontally is fixed to the lower end portion of the drive shaft, and a driven shaft is rotatably supported on an end edge portion of the support member. In the mixer, the driven gear fixed to the upper end of the driven shaft is interlocked with the fixed gear, and the driven shaft supported by the support member rotates along with the rotation of the drive shaft so that the driven shaft revolves around the drive shaft. A substantially square frame-shaped stirrer is fixed to the lower end of the shaft, the stirrer has a rotation diameter approximately equal to the radial length of the stirrer, and the outer peripheral edge of the rotation path of the stirrer is the inner peripheral wall of the stirrer While forming so as to be close, the horizontal member at the lower end of the stirring tool is close to the bottom wall of the stirring tank Is positioned to the mixer in the horizontal member end portions, characterized in that a pair of plate-like scooping blade comprising tilted so as gradually away from the bottom wall of the agitating tank with respect to the rotation direction.   The mixer according to claim 1, wherein an inclination angle of the scraping blade is 45 ° with respect to a bottom wall of the stirring tank.

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