JP2016215195A - mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new type for preventing abrasion by long-term use of a rotary shaft 500 (a shaft) and delicate leakage of moisture from a sliding surface 207 of packing, in a mixer having a frame body 20.SOLUTION: In a mixer for mixing an object stored in a predetermined frame body 20 by rotating a rotary shaft 500 positioned in a substantially horizontal state, an annular fixing member 18 for inserting the rotary shaft 500 is fixed to and installed in a hole part 22 of the frame body 20 instead of a type of sliding the rotary shaft 500 by being installed in a frame body hole part 22 by installing an annular packing. The mixer comprises an annular rotary member 100 including a sliding surface 207 orthogonal to the rotary shaft between the fixing member 18 and the rotary member, and integrally rotating with the rotary shaft 500 and driving means for rotating the rotary shaft 500.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mixer for mixing an object. In particular, the present invention relates to a mixer suitable for kneading dough in which water is added to wheat flour, starch or the like and kneaded.

In various industrial fields including foods, mixers for mixing raw materials are widely used. In particular, in the food field, raw materials such as wheat flour, buckwheat flour, and starch are added and kneaded with water and various salts to produce a so-called dough. Bread. At this time, it is necessary to use a mixer in the kneading operation.

In many cases, the mixer usually has a configuration in which a rotary shaft (shaft) 500 is attached to a predetermined frame 20 as shown in FIG.
In the mixer of this type, a raw material such as flour or water is put into the frame body 20, and the rotating shaft (shaft) 500 positioned in a substantially horizontal direction is rotated to start from the rotating shaft (shaft) 500. The dough is formed by kneading the raw materials with a stirring member such as the protruding stirring rod 24.

In the mixer, the configuration of mounting the rotating shaft 500 to the frame 20 is a problem. Conventionally, as shown in FIG. 5, a fixing member 550 for mounting an annular gland packing 510 is provided in the hole portion 22 of the side surface portion 202 of the frame body 20, and the rotating shaft (shaft) 500 is A configuration is adopted in which the rotary shaft 500 is mounted while being pressed against the inner surface of the annular fixing member 550 via a gland packing 510 that covers a partial region of the rotary shaft 500 around the circumference, and the rotary shaft 500 is rotated by a predetermined driving device. There were many cases.

In this case, when the rotating shaft 500 rotates, the rotating shaft 500 slides with the inner peripheral surface of the gland packing 510. In the case of this form, when the rotary shaft (shaft) 500 is worn out over a long period of time, or when the seal structure is insufficient and the inside of the frame 20 is high in moisture, the rotary shaft (shaft) 500 and the gland packing 510 There may be a problem with airtightness such as a slight leakage of moisture from the sliding surface.
The following is disclosed as a related prior art as a prior art for improving such problems.

JP-A-2010-35505 can improve the sealing efficiency by gland packing under reduced pressure. However, since it is still a sealing method using gland packing, other methods are also conceivable.

Accordingly, the present inventors have proposed a new method for preventing wear due to long-term use of the rotating shaft (shaft) and subtle leakage of moisture from the sliding surface of the packing in the mixer having the frame as described above. The issue was to develop.

As a result of various studies by the present inventors, an annular member that rotates together with the rotation shaft is fixedly mounted around the rotation shaft (shaft) from the above-described packing method so far, and the sliding surface of the annular member is fixed. It has been found that a method of using a plane portion (surrounding surface) that is outside and orthogonal to the rotation axis is effective.
That is, the first invention of the present application is
“A mixer for mixing an object contained in a predetermined frame by rotating a rotating shaft located in a substantially horizontal state,
1) a rotating shaft equipped with a stirring member for mixing the object;
2) a substantially rectangular parallelepiped frame provided with a pair of holes having a diameter larger than the diameter of the rotating shaft, through which the rotating shaft is inserted;
3) An annular fixing member that is fixedly attached to the hole of the frame and through which the rotating shaft is inserted;
4) a pair of annular rotating members that have a sliding surface orthogonal to the fixing member and the rotating shaft, are inserted and fixed through the rotating shaft, and rotate integrally with the rotating shaft;
5) A driving means for rotating the rotating shaft,
Equipped mixer. “It is.

Further, it is preferable that the annular fixing member has a side surface shape that fits in conformity with the shape of the hole of the frame body at one end portion thereof.
That is, the second invention of the present application is
The mixer according to claim 1, wherein the annular fixing member is a fixing member having a side surface shape having a shape that fits into a hole of the frame at an end portion thereof.

Next, the annular fixing member preferably has a substantially tapered inner surface shape whose diameter decreases inward.
That is, the third invention of the present application is
"The mixer according to claim 1 or 2, wherein the annular fixing member has a substantially tapered inner surface shape whose diameter decreases outward from the inside of the mixer."

  By using the mixer of the present invention, it is possible to prevent wear due to long-term use of the rotating shaft (shaft) and subtle leakage of moisture from the sliding surface of the packing.

It is the perspective view which showed the main structures in 1st embodiment of this invention. It is the perspective view which showed the structure of the cyclic | annular rotation member, the cyclic | annular fixing member, and frame which were seen from the outer side of the frame in the 1st embodiment of this invention. It is the perspective view which expanded the main structure in the 1st embodiment of this invention. It is sectional drawing of the main structures in the 1st embodiment of this invention. It is the perspective view shown about the structure which mounts a rotating shaft with respect to the conventional frame.

1 mixer
18 Ring fixing member
20 frame
22 Frame hole
24 Stir bar
26 Bolt hole
28 Screw hole
100 Annular rotating member
106 Spring
114 drive pins
116 drive core
118 First spring specified screw
119 Second spring specified screw
120 pressure plate
202 Side of frame
207 Sliding surface
208 Sliding member
500 Rotating shaft (shaft)
510 gland packing
550 Packing fixing member
1001 First seal member
1002 Second seal member

The first embodiment of the present invention will be described below with reference to the drawings. However, the present invention is not limited to these embodiments.
The mixer of the present invention is
“A mixer for mixing an object contained in a predetermined frame by rotating a rotating shaft located in a substantially horizontal state,
1) a rotating shaft equipped with a stirring member for mixing the object;
2) a substantially rectangular parallelepiped frame provided with a pair of holes having a diameter larger than the diameter of the rotating shaft, through which the rotating shaft is inserted;
3) An annular fixing member that is fixedly attached to the hole of the frame and through which the rotating shaft is inserted;
4) a pair of annular rotating members that have a sliding surface orthogonal to the fixing member and the rotating shaft, are inserted and fixed through the rotating shaft, and rotate integrally with the rotating shaft;
5) A mixer provided with drive means for rotating the rotating shaft. “It is.

The first embodiment of the present invention will be described below. However, the present invention is not limited to the following first embodiment. FIG. 1 is an enlarged schematic view of the main configuration of the mixer according to the first embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the annular rotating member 100, the annular fixing member 18 and the frame body 20 as seen from the outside of the frame body 20 in the first embodiment of the present invention. FIG. 3 is a perspective view showing a main configuration in the first embodiment of the present invention. FIG. 4 is a cross-sectional view of the main configuration in the first embodiment of the present invention. Further, FIG. 5 is a perspective view showing a conventional mounting structure of the rotary shaft 500. FIG. Each figure is a perspective view in which the inside of the frame 20 is appropriately exposed in order to show the internal structure of the mixer.
The mixer of the present invention has a substantially rectangular parallelepiped frame body 20 that accommodates an object, and the hole portions 22 of the frame body 20 are provided in side surfaces 202 at both ends in the longitudinal direction of the frame body 20. The rotary shaft 500 is inserted through the frame hole portion 22.

Further, the rotary shaft 500 is inserted with an annular fixing member 18 to be described later outside the frame body 20, and the end of the annular fixing member 18 is fitted into the frame body hole portion 22, and is attached to the frame body 20 by screws. Fixed. On the outer side of the annular fixing member 18, an annular fixing member 100 that is also inserted through the rotation shaft 500 is located, and is fixed in urging contact with the rotation fixing member. Further, the annular fixing member 100 is fixed to the rotating shaft 500 and rotates together with the rotating shaft 500.
Although not shown, the rotary shaft 500 is provided with a driving device for applying a rotational force separately. Each configuration will be further described below.

─Mixer─
The mixer 1 of the present invention can target various objects, but is particularly suitable for food. Moreover, the case where the flour and water and other additives are added and kneaded among foods is assumed.
Specifically, dough as a raw material for noodles and bread as a raw material for bread that is added and kneaded with wheat flour, starch, salt, brine, and the like as necessary is specifically assumed.

-Frame-
The frame 20 has a role as a container for storing a raw material that is an object to be mixed. In the first embodiment of the present invention, the bottom of the frame body 20 has a substantially rectangular parallelepiped shape as a whole, and the bottom portion of the frame body 20 is substantially arranged so that the movement of the stirring rod 24 described later reaches the entire storage portion of the frame body 20. It is formed in a circular shape.
However, the shape of the frame 20 is not particularly limited to the first embodiment of the present invention, and various forms are of course possible.
In the first embodiment of the present invention, holes 22 are provided in the left and right side surface portions 202 of the frame body 20, and a rotating shaft 500 described later is inserted through the frame body hole portion 22 in a substantially horizontal direction. Is done.
The frame body 20 is preferably configured so that the frame body 20 itself can be turned up and down in order to discharge the kneaded contents. The structure of these frame bodies 20 can be appropriately selected by a known method.
Of course, a support member for supporting the frame body 20, a guide for transmitting power from the driving means, a belt, a chain, and the like can be appropriately arranged and used for the frame body 20. .
In addition, it is possible to use a so-called vacuum mixer in which the inside of the frame 20 is decompressed by increasing the confidentiality of the frame 20 with the outside and reducing the internal pressure.

─Rotation axis─
The rotating shaft 500 is a shaft for stirring the raw materials such as flour stored in the frame body 20. In the first embodiment of the present invention, a stirring rod 24 is mounted around the rotating shaft 500 as a stirring member for stirring the object. A plurality of the stirring rods 24 are mounted perpendicularly to the extending direction of the rotating shaft 500 at a predetermined interval. The number, length, and arrangement of these stirring bars 24 can be appropriately set according to the object.
In the first embodiment of the present invention, a straight bar-shaped member is shown as the stirring bar 24, but the present invention is not limited to this. For example, it is not a bar but a spoon or a curved bar-shaped member. Forms are possible.

Various sizes can be selected as the diameter of the rotating shaft 500, and it is only necessary that the hole 22 provided in the frame body 20 can be inserted through the rotating shaft 500. Therefore, rotating rods of various diameters can be used by making the hole 22 of the frame 20 large.
In other words, in this case, various sizes of the hole 22 of the frame body 20 can be obtained without processing by manufacturing one having the diameters (sizes) of the annular fixing member 18 and the annular rotating member 100 described later adjusted. It becomes possible to mount the rotating shaft 500 having a diameter of.
In particular, when a mixer using the conventional gland packing 510 as shown in FIG. 5 already exists, while using the hole 22 of the frame 20 of the mixer as it is, By adjusting the size of the annular rotating member 100, the structure of the mixer of the present invention can be modified. As a result, moisture leakage and the like can be prevented and a mixer having excellent airtightness can be obtained.

The relationship between the diameter of the rotating shaft 500 and the diameter of the hole portion 22 of the frame body 20 is not particularly limited, but the hole portion 22 of the frame body 20 is not connected to the rotating shaft 500 although it depends on the size of the diameter of the rotating shaft 500. It is sufficient to have a diameter approximately 1.2 to 3 times the diameter.
In the first embodiment of the present invention, as shown in FIG. 1, a single-shaft type mixer having a single rotating shaft 500 in the frame 20 is disclosed, but the present invention is not limited to this. Of course, it may be a shaft type. In this case, two rotation shafts 500 are mounted in the frame body 20.

--Annular fixing member--
The annular fixing member 18 is inserted into the rotation shaft 500 and fixedly attached to the hole portion 22 of the side surface portion 202 of the frame body 20 from the outside of the frame body 20.
The present annular fixing member 18 has a role of maintaining airtightness with the outside via the rotation shaft 500 inside the frame 20 together with the annular rotation member 100 described later. Further, when selecting the rotating shaft 500 having various diameters, the rotating shaft 500 can be rotated by adjusting the sizes of the annular fixing member 18 and the annular rotating member 100 described later, regardless of the shape of the hole 22 provided in the frame body 20. The shaft 500 can also be mounted.

  As shown in FIGS. 3 and 4, the annular fixing member 18 of the first embodiment has a circular shape in which one surface on the side attached to the side surface portion 202 of the frame body 20 matches the shape of the hole portion 22. The side surface portion 202 of the frame body 20 has a shape of a convex portion, and is fixed by a fixing bolt inserted through the provided bolt hole portion 26 in a state where the circular convex portion is fitted in the hole portion 22 of the frame body 20. Attached and fixed to.

Further, as shown in FIG. 4, an annular first seal member 1001 that is an elastic body is provided on a close contact surface with the frame body 20, and when the annular fixing member 18 is fixed to the frame body 20 with fixing bolts. It is comprised so that airtightness with the frame 20 exterior may be maintained.
Further, as described above, the annular fixing member 18 of the first embodiment has a circular convex portion having an outer diameter corresponding to the size of the frame body hole portion 22 in the cross section as shown in FIG. The circular convex portion is configured to be fitted into the body hole portion 22, and the inner surface portion of the circular convex portion is opened in a substantially tapered shape from the inside of the mixer (inside the frame body 20) toward the outside. It has a shape that reduces the diameter of the part.
Further, the outer surface of the annular fixing member 18 with respect to the frame 20 has a sliding surface 207 perpendicular to the rotation axis between the annular fixing member 100 and the annular fixing member 100 described below.

─Annular rotating member─
The annular rotating member 100 in the first embodiment is a member that is inserted through the rotating shaft 500, is fixedly mounted on the rotating shaft 500, and rotates together with the rotating shaft 500. As shown in FIGS. 2 and 4, in the first embodiment, the annular fixing member 100 includes the portion of the drive core 116 that is attached and fixed to the rotating shaft 500, the annular sliding member 208, and the same. A pressing plate 120 having a shape is provided.
In the first embodiment, the drive core 116 is mounted on the rotary shaft 500 and employs a configuration in which the drive core 116 is completely fixed by being bitten into the shaft by fixing with a screw. As a result, when the rotating shaft 500 rotates, the drive core 116 also rotates simultaneously.

Further, two drive pins 114 project from the drive core 116 around the circumference, and extend through the pressing plate 120 to the inside of the sliding member 208. As a result, the sliding member 208 is also rotated in synchronization with the rotation of the drive core.
Further, four first spring defining screws 118 for defining the position of the spring 106 are fitted from the drive core 116 into the screw holes 28 penetrating the drive core surface. Further, a second spring defining screw 119 is also provided on the pressing plate 120 side so as to be paired with the first spring defining screw 118 with a space therebetween. In this way, the positions of the four springs 106 are defined by both.
When the annular rotating member 100 is fixed to the rotating shaft 500, the sliding member 208 urges the outer surface of the annular fixing member 18 by the spring 106 when the rotating shaft 500 is attached to the frame body 20. Thus, the fixed position of the rotating shaft 500 is adjusted and attached. Accordingly, the sliding member 208 of the annular rotating member 100 can be configured to be urged and pressed against the sliding surface 207 with the annular fixing member 18. Of course, a smaller friction coefficient of the sliding member 208 on the sliding surface 207 is preferable. The sliding surface 207 is preferably present in a plane perpendicular to the rotation axis 500.
Further, as shown in FIG. 4, an annular second seal member 1002 is mounted on the inner surface of the annular sliding member 208 and promotes close contact with the rotating shaft 500 to maintain airtightness with the outside of the frame body 20. It is configured as follows.

As the material of the sliding member 208, a member such as carbon, silicon carbide (SiC), cemented carbide, or chromium oxide coating can be suitably used. The sliding surface 207 of the annular fixing member 18 that slides with the sliding member 208 is preferably a member such as stainless steel SUS316 or titanium.
By adopting the structure of the present invention in this way, even when producing dough by applying moisture to powder raw materials such as wheat flour and the powder raw materials, moisture leakage etc. compared to conventional packing methods Can be suppressed.
When the sliding surface 207 is cleaned, the sliding member 208 is pressed by the spring 106 by removing the first spring defining screw 118 and removing the spring 106 without removing the drive core from the rotating shaft 500. The force can be released, and the sliding surface 207 can be easily exposed and cleaned.

─Drive device─
About the drive device by this invention, although not shown in figure, various types can be selected. For example, various forms are possible in which power is transmitted to the drive motor via gears, chains, and belts.
Of course, various conditions such as the rotational speed of the drive of the rotary shaft 500 can be set. Furthermore, as described above, both the biaxial type and the uniaxial type can be applied.

Claims (3)

A mixer for mixing an object contained in a predetermined frame by rotating a rotating shaft located in a substantially horizontal state,
1) a rotating shaft equipped with a stirring member for mixing the object;
2) a substantially rectangular parallelepiped frame provided with a pair of holes having a diameter larger than the diameter of the rotating shaft, through which the rotating shaft is inserted;
3) An annular fixing member that is fixedly attached to the hole of the frame and through which the rotating shaft is inserted;
4) a pair of annular rotating members that have a sliding surface orthogonal to the fixing member and the rotating shaft, are inserted and fixed through the rotating shaft, and rotate integrally with the rotating shaft;
5) A driving means for rotating the rotating shaft,
Equipped mixer.
The mixer according to claim 1, wherein the annular fixing member is a fixing member having a side shape having a shape that fits into a hole of the frame body at an end portion thereof.
The mixer according to claim 1 or 2, wherein the annular fixing member has a substantially tapered inner surface shape whose diameter decreases from the inside of the mixer toward the outside.

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