JPH03240505A - Mortar mixer - Google Patents

Abstract

PURPOSE:To reduce the build up of hardened deposit on the inner wall of a vessel by a structure wherein high speed agitating blades, which rotate in the predetermined direction of rotation, and low speed agitating blades, which are provided coaxially with the high speed agitating blades and rotate at low speed in the direction opposite to the direction of rotation of the high speed agitating blades. CONSTITUTION:By rotating motors respectively after the charging of kneading material through a charging port 15 in a mixer vessel 1, high speed agitating blades 3 and low speed agitating blades 4 are rotated through a driving pulley 7 and through a sprocket wheel 8 at speeds different from each other in the directions of rotation opposite to each other. In this case, since the low speed agitating blades 4 rotate under the condition that small gap is held between the blade 4 and the inner peripheral surface of the mixer vessel 1, the kneading material is kneaded favorably and, at the same time, adhered material is scratched off from the inner peripheral surface of the mixer vessel 1, resulting in preventing said material from adhering to the inner peripheral surface of the mixer vessel 1. By opening a discharge valve 14 after kneading, kneaded material of mortar or the like is discharged outside the mixer vessel 1 through a discharge port 16. Thus, since the hardened kneading material becomes hard to adhere to the inner peripheral surface of the mixer vessel, the labor-saving is realized and, at the same time, the productivity of the mortar concerned is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mortar mixer equipped with stirring blades that rotate at different speeds in opposite directions.

[Conventional technology]

Conventional mortar and cement mixers are equipped with stirring blades in a vertical mixer container, and a suitable mixture of cement, sand, and water is poured into the mixer container through the input port provided at the top of the mixer container. Mortar was created by rotating the mortar in a certain direction and mixing it uniformly.

[Problem to be solved by the invention]

However, in such conventional mortar mixers, the stirring blades provided inside the mixer container were rotated uniformly in a fixed direction to perform kneading, so mortar, cement milk, etc. were deposited on the inner wall of the mixer container. It often hardens and adheres, and the mortar mixer has to be stopped several times a day to manually remove the chips from the 4Nj kimono.

The present invention was made to solve this problem, and includes stirring blades that rotate in opposite directions at different speeds in the mixer container, so that hardened materials such as mortar and cement milk adhere to the inner wall of the container. The purpose of the present invention is to provide a mortar mixer that reduces this as much as possible.

[Means to solve the problem]

In order to achieve the above object, the mortar mixer of the present invention includes a high-speed stirring blade that rotates in a predetermined direction, and a high-speed stirring blade that rotates in the opposite direction and at a low speed. It is equipped with a rotating low-speed stirring blade.

[For production]

In the mortar mixer configured as described above, by rotating the high-speed stirring blade and the low-speed stirring blade in the opposite direction and at a low speed, the mixed wire material is well kneaded and the deposits are scraped from the inner wall of the mixer container. The mixed wire material that is removed will not adhere to the inner periphery of the mortar mixer and will not harden.

〔Example〕

An embodiment of the mortar mixer of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the mortar mixer of the present invention includes a mixer container 1 placed on a frame 2 into which mortar, cement milk, etc. are charged and kneaded, and a high-speed container rotatably installed in the mixer container 1. It consists of a stirring blade 3 and a low-speed stirring blade 4 that rotates at a slower speed than the stirring blade 3 and in the opposite direction. Mortar, cement milk, etc. are input manually through an input port 15 provided at the top of the mixer container 1, and after kneading, a discharge port 01 provided at the bottom of the mixer container is introduced.
By opening the discharge valve 7 from 6, the mixture is discharged to the outside of the mixer container 1. The high-speed stirring blade 3 is rotatably supported via a bearing 12 in a bearing case 11 attached to the upper part of a gnome 4 having a U-shaped cross section and fixed to the center of the top 4J of the mixer container 1. A plurality of blades (for example,
(4 pieces each) are extended and installed. High speed stirring blade 3
is fixed to the boss portion 3A by welding or the like, and the boss portion 3A is pivotally supported on the rotary vane shaft 5 by one stage such as a key. In addition, a high-speed stirring blade drive pulley 7 is fixed to the upper end of the rotating blade shaft 5, and is connected to a separately provided electric motor (not shown) via a belt to transmit the driving force of the electric motor. The high-speed stirring blade 3 is configured to rotate at high speed in a predetermined direction.

Further, a bearing case 9 is fixedly installed at the center of the top of the mixer container 1 and at the bottom of a frame 14 having a U-shaped cross section. The shafts 5 and the like are rotatably supported on the same axis. In addition, low-speed stirring blades 4 having a U-shaped cross section are attached to the bearing portion 8A extending from the sprocket wheel 8 at the inner peripheral portions IA and IB of the mixer container 1.
.

One boss part 4B with a slight gap from 1C
The ratio shaft 6 is fixed to the bottom of the mixer container 1 via the other boss portion 4A of the stirring blade 4.
It is rotatably slidably fitted to the

Further, the sprocket wheel 8 is connected to another electric motor (not shown) via a roller chain (not shown) that meshes with the sprocket wheel 8, and upon receiving the driving force thereof, the low-speed stirring blade 4 is connected to the high-speed stirring blade 3. It is designed to rotate in the opposite direction to the direction of rotation. The bearing portion 8A of the sprocket wheel 8 is rotatably fitted loosely into the rotary vane shaft 5, and an elastic sealing ring such as an O-ring is provided between the rotary vane shaft 5 and the inner hole of the sprocket wheel 8. 13 is fitted to prevent leakage of crosstalk material from inside the mixer container 1.

When kneading mortar using the mortar mixer configured in this way, the input port 1 of the mixer container 1 is
When the mixed pure material is mixed from 5 and the respective electric motors are rotated, the high-speed stirring blade 3 and the low-speed stirring blade 4 rotate at different speeds and in opposite directions through the drive pulley 7 and sprocket wheel 8. At this time, especially the low speed stirring blade 4
As shown in FIG. 2, since it rotates while maintaining a small gap from the inner circumferential surface of the mixer container 1, the mixing material is well kneaded and the material adhering from the inner circumferential surface of the mixer container 1 is removed. Since these materials are scraped off, adhesion of these materials to the inner peripheral surface of the mixer container 1 is prevented. Discharge valve after kneading]
7 is opened to discharge kneaded materials such as mortar to the outside of the mixer container 1 from the discharge port 16.

[Effects of the Invention] Since the mortar mixer of the present invention is configured as described above, it becomes difficult for the hardened crosstalk material to adhere to the inner circumferential surface of the mixer container. There is no need to hack away one kimono. As a result, it is possible to save labor and improve the productivity of mixing mortar and the like. Furthermore, since the kneading effect is improved, it is possible to obtain mortar of good quality.

[Brief explanation of drawings]

FIG. 1 is a partially longitudinal side view of an embodiment of the mortar mixer of the present invention, and FIG. 2 is a perspective view of a low-speed stirring blade. 1... Mixer container, 2... Underframe, 3... High speed stirring blade, 4... Low speed stirring blade, 5... Quadruple blade, 6
...Support shaft, 7...High-speed stirring blade drive pulley, 8...
・Low speed stirring blade drive sprocket wheel, 9...bearing case, 10...bearing, 11...bearing case, 12
...bearing, 13.. skin ring, 14.. frame, 15.. inlet, 16.. outlet, 17.
...Discharge valve.

Claims (1)

[Claims] a high-speed stirring blade rotating in a predetermined direction; disposed on the same axis as the high-speed stirring blade, and in a direction opposite to the high-speed stirring blade;
A mortar mixer equipped with a low-speed stirring blade that rotates at a low speed.