JPH029885Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention relates to a kneading device for mortar, concrete, etc., and in particular to a kneading device that has a rotating shaft inside a casing equipped with a stirring blade that stirs and feeds raw materials. .

BACKGROUND OF THE INVENTION Generally, kneading equipment for mortar, concrete, etc. uses a rotating shaft in a metal casing, which is equipped with stirring blades that feed raw materials while stirring them. Conventionally, stirring blades attached to this type of rotating shaft are made of metal material.

By the way, the raw materials put into the casing of the kneading device in operation are sent forward while being stirred by the stirring action of the stirring blades as the rotating shaft rotates, but the casing and stirring blades are made of metal, Since it directly collides with the raw material being delivered, there is a problem that not only is it prone to wear, but also the collision noise is loud. In addition, it is desirable that the clearance between the stirring blade and the casing be small in order to reduce the amount of raw material remaining in the casing after the operation is stopped and eliminate waste. Crushed stones and the like become easily eaten, and frictional contact with the raw materials not only accelerates the wear of both the stirring blades and the casing, but also sometimes creates a high load during operation, causing the drive motor to stop unexpectedly. It was hot.

Purpose This invention was devised in view of the above-mentioned problems, and its purpose is to buffer the contact between the stirring blade and the raw material to reduce the occurrence of wear, reduce the collision noise between the stirring blade and the raw material, and , the clearance with the casing can be made small to reduce the amount of raw material remaining in the casing after the operation is stopped, and the rate of wear of the casing and stirring blades can be slowed down, and furthermore, it is possible to reduce the amount of raw material remaining in the casing after the operation is stopped. To provide a stirring device for mortar, concrete, etc., which does not generate a high load inside and does not cause a drive motor to stop.

Configuration In order to achieve the above object, the present invention is configured as described below.

That is, the kneading device has a rotating shaft in a casing equipped with stirring blades that feed the raw materials while stirring them, and the side and bottom portions of the casing are integrally formed into a U-shape with rubber plates, and The stirring blade is provided with a replaceable covering member made of an elastic member that covers at least the delivery direction surface and the tip end surface of the rubber plate facing the casing surface. This configuration reduces wear on the casing and stirring blades,
It is characterized by reducing the collision noise between the raw material and the stirring blade, reducing the amount of raw material remaining in the casing after the operation is stopped, and preventing the drive motor from stopping due to high loads during movement. It is.

Example This invention will be explained below based on the drawings.

1 to 5 show an embodiment of this invention. Reference numeral 1 shown in the figure is a continuous kneading mixer, and 2 is a casing of the continuous kneading mixer 1. The side and bottom parts of the casing 2 are integrally formed with an elastic member such as a rubber plate into a gutter shape with a U-shaped cross section. The upper lid 2a is provided so as to be openable and closable. Reference numeral 3 denotes a rotating shaft mounted in the casing 2, and the rotating shaft 3 is connected to a rotating shaft main body 5 on which a stirring blade 4 is attached, and to both ends of the rotating shaft main body 5,
It is comprised of a bearing member 7 which is supported by both bearing parts 6, 6 attached to both sides of the casing 2. FIGS. 2 and 3 are views showing the rotating shaft 3 equipped with the stirring blades 4, in which FIG. 2 shows a spiral blade 4a that mainly feeds the raw material and a rod-shaped blade that mainly stirs the raw material. 4b is attached, and in FIG. 3 only the spiral blade 4a is attached.

Reference numeral 8 denotes a covering member made of an elastic material such as rubber, and as shown in FIGS. 2 and 3 above, it has a fan shape, a fan shape, and a fan shape in accordance with the respective shapes of the spiral blade 4a and the rod-shaped blade 4b of the stirring blade 4, as shown in FIGS. Hook-shaped etc. 8a, 8b, 8
c, 8d, . . . and are designed to cover at least the delivery direction surface and the tip surface facing the casing surface of the rubber plate. Especially spiral blades 4
A is divided into a plurality of parts and attached to the stirring blade 4, covering at least the delivery direction surface 4a and protruding from the tip. That is, in the case of FIG. 4, the covering member 8 covers from the delivery direction surface 4A of the stirring blade 4 through the tip surface facing the casing surface of the rubber plate to the delivery opposite surface 4B, and in the case of FIG. covers the delivery direction surface 4A, protrudes somewhat from its tip, and covers the tip surface facing the casing surface of the rubber plate, and is attached via a bolt 9 and a nut 9a, respectively. The gap between the tip of the stirring blade 4 and the casing 2 is kept the same as in the past, or slightly larger, and the tip of the covering member 8 covering these is provided closer to the casing 2 to reduce the gap. In addition, in the above, the stirring blade 4 of the coating member 8 is attached with bolts 9, so that it can be easily replaced when worn.
Although this is done using a nut 9a, adhesive or the like may also be used.

Further, 10 is an inlet for raw materials opened at the upper left of the casing 2, 11 is an outlet for the product after stirring opened at the lower right of the casing 2, and 12 is an inlet for the raw material opened at the lower right of the casing 2.
A U-shaped rubber plate 13 integrally constitutes the side and bottom parts extending in the longitudinal direction of the rubber plate 13, which is interlocked and connected to the protruding end of the bearing part 6 of the bearing member 7 on the side of the outlet 11. It is a drive motor.

Next, the effect will be explained.

This kneading device is installed with its tip slightly raised so that the raw materials can be fed against gravity and sufficiently kneaded. When the raw material is introduced from the input port 10 into the casing 2 where the rotary shaft 3 is rotated by the drive motor 13, the raw material is agitated by the stirring blade 4 attached to the rotary shaft 3. , is sent out in the direction of the delivery port 11. During this stirring and feeding process, the raw material collides with the stirring blade 4, but since the stirring blade 4 is covered with the covering member 8,
It is buffered and the impact is reduced. On the other hand, since the covering member 8, which is made of a soft elastic material rather than a hard material, comes into contact with a hard material such as aggregate, there is less wear.
Even if it wears out, the covering member 8 will wear out and can be replaced, and costs can be reduced, especially if old tires are used. Moreover, since the raw material is stirred while receiving soft elasticity from the covering member 8, a kind of omni effect is exhibited in conjunction with the rubber plate 12 of the casing 2, improving the stirring effect and producing excellent mortar and concrete. and other products are manufactured.

Further, since the clearance between the tip of the covering member 8 and the rubber plate 12 of the casing 2 is small, the operation is performed so that the raw material does not adhere to the inner surface of the casing 2. Therefore, the amount of raw material remaining in the casing 2 after the operation is stopped can be reduced, eliminating waste and making cleaning easier.

Moreover, the covering member 8 and the rubber plate 1 of the casing 2
Even if a raw material enters between the stirring blade 4 and the casing 2, since both are made of the elastic member 8, they will only deform and retract by the amount of raw material, and no large force will be applied to the stirring blade 4 and the casing 2, so the degree of wear will be reduced. As the becomes smaller,
A large load is not applied to the drive motor 13, and an unexpected situation such as stopping during operation is not caused.

Effects As explained above, according to this invention, the structure is such that the sides and bottom of the casing are integrally made of rubber.
In addition to the shape, the stirring blade attached to the rotating shaft is provided with a replaceable covering member made of an elastic member that covers at least the surface in the sending direction and the tip surface facing the casing surface of the rubber plate. ,
Various effects as described below can be obtained.

(1) Collision of the raw material against the stirring blade during stirring and delivery is buffered by the covering member, which is an elastic member.
Abrasion of the stirring blades can be reduced, collision noise can also be reduced, and the driver can be made smaller.

(2) The raw material is stirred while receiving soft elasticity from the covering member, especially at the periphery, so together with the rubber plate of the casing, it produces an omni effect and improves the stirring effect, making it possible to manufacture excellent products. can.

(3) The clearance between the tip of the covering member and the rubber plate of the casing is small, and the operation is performed so that the raw material does not adhere to the inner surface of the casing, so the amount of raw material remaining in the casing after the operation is stopped can be reduced. Waste is eliminated, cleaning becomes easier, and moreover, the feeding capacity is improved.

(4) Even if raw materials enter between the coating member and the rubber plate of the casing, both will deform and retract by the amount of raw material, and no large force will be applied to the stirring blades or the casing, so the degree of wear will be reduced. This reduces the amount of power required, and eliminates unexpected situations such as a large load on the drive motor causing it to stop.

[Brief explanation of the drawing]

The drawings show an embodiment of the kneading device according to the present invention, in which Fig. 1 is a front view showing a cross section of the casing and bearing part, and Figs. A perspective view showing the relationship, and FIGS. 4 and 5 are front views showing, in cross section, a part of the stirring blade equipped with the elastic member. 1... Continuous kneading mixer (kneading device), 4...
Stirring blade, 4A...Sending direction surface, 4a...Spiral blade, 4b...Bar-shaped blade, 8...Coating member.

Claims (1)

[Scope of Claim for Utility Model Registration] A kneading device having a rotating shaft in a casing equipped with stirring blades for stirring and feeding raw materials, the side and bottom of the casing being integrally formed with rubber plates in a U-shape. In addition, the stirring blade is provided with a replaceable covering member made of an elastic member that covers at least a surface in the feeding direction and a tip surface facing the casing surface of the rubber plate. Kneading equipment.