JPH03121815A - Kneading-force feeding apparatus for mortar or the like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a kneading and pressure feeding device for mortar and the like.

More specifically, for example, when fixing rock bolts on the walls of new or existing tunnels with grouting materials such as mortar or cement milk, or when filling the back side of tunnel walls with mortar, premixed dry mortar, cement, etc. This invention relates to a device that continuously mixes and stirs powdered material with water and pumps it.

[Conventional technology]

Conventionally, in this type of device, a mixing mechanism for mixing powder material and water, a pumping mechanism for pumping the kneaded material, and a drive source for driving both mechanisms are arranged on the same axis to achieve the above-mentioned method. It is known that the kneading operation and the pumping operation are performed continuously (for example, see Japanese Patent Laid-Open No. 1-193610).

[Problem to be solved by the invention]

However, in the conventional device, the kneading mechanism and the discharge pressure mechanism are arranged in the vertical direction, that is, approximately perpendicular to the horizontal plane. Near the exit, the kneaded mortar is densely compressed by its own weight, causing an excessive load on the power source, resulting in problems such as a decrease in the amount of pumping or a stoppage.

Further, it is preferable that the means for supplying powder material such as Preminox dry mortar to the kneading mechanism be placed as low as possible so that powder material can be easily supplied to the supply means. As the above-mentioned supply means, a storage tank is provided on the side of the kneading mechanism, and the powder material stored in the tank is moved upward by a transfer wheel provided in the tank to be supplied to the kneading mechanism. However, there are problems in that a power source such as a motor for rotationally driving the transfer wheel must be provided separately from a power source for driving the kneading mechanism and the like.

The present invention aims to solve the above problems.

[Means to solve the problem]

The present invention provides a kneading and pumping device for mortar, etc., which continuously kneads powder materials such as premix dry mortar and cement with water, and pumps the mixture. A pumping mechanism that pumps the material and a power source that drives both mechanisms are arranged approximately on the same axis, with the axis inclined at an angle of 45 degrees or less with respect to the horizontal plane, and the powder is placed above the kneading mechanism. It is characterized by providing a material supply means.

[Function] As described above, by arranging the kneading mechanism, the pumping mechanism, and the power source for driving both mechanisms on substantially the same axis, and with the axis inclined at an angle of 45 degrees or less with respect to the horizontal plane, When kneading and force-feeding mortar, etc., it is less likely to be densely compressed due to its own weight.

Further, by arranging the powder material supply means at the upper part of the kneading mechanism, it becomes possible to drop and supply the powder material from the hopper to the kneading mechanism by its own weight without separately providing a power source such as a motor.

〔Example〕

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is an enlarged longitudinal sectional view thereof.

In the figure, reference numeral 1 denotes a mixer as a kneading mechanism, a screw pump (snake pump) 2 as a pressure feeding mechanism is provided on one end thereof, and a motor M as a power source for the mixer is provided on the opposite side.

The mixer 1 is mounted and supported on a pedestal 3, and the screw pump 2 and motor M are each attached to the mixer 1 by hinges 4, buckles 5, etc. so as to be openable and closable.

In addition, the motor M, mixer 1 and screw pump 2 are
They are arranged substantially on the same axis, with the axis inclined at an angle of 45° or less with respect to the horizontal plane H. The inclination angle θ is preferably within the range of 10 to 30 degrees, and in the case of the figure, it is set to about 15 degrees.

As shown in FIG. 2, the mixer 1 is configured such that a mixing screw 1a and a mixing blade 1b are continuously rotated within a cylinder 1c by a bearing member not shown in the figure, on an extension line of an output shaft M1 of a motor M. The rotor 2a of the screw pump 2 is provided as an extension of the mixing screw 1b.

The above output shaft M1, mixing screw 1a, mixing blade 1b and rotor 2a are squarely fitted in order,
It is rotated by a motor M at a predetermined speed.

A pyramid-shaped hopper 6 is provided above the mixing screw 1a as a means for supplying powder materials such as premix dry mortar and cement. communicated within. A shutter 8 opens and closes the communication path, and is provided movably along a guide 9.

At the top of the hopper 6, there is a cutter 10 for opening a bag (not shown) containing a powder material such as premix dry mortar, and a cutter 10 that prevents the opened bag or foreign matter from entering the hopper 6 or the operator. A mesh screen 11 is provided to prevent the operator from inadvertently inserting his/her hand into the hopper.

Further, a water supply port 12 is provided in the upper part of the cylindrical body 1c above the mixing blade 1b, and a predetermined amount of water is continuously supplied via a hose 14 from a control box 13 that controls water volume and water pressure. In FIG. 1, 15 is a water intake device for the control box 13, and 16 is a water flow control valve.

In the above configuration, with the shutter 8 closed as shown by the solid line in FIG. 2, a bag (not shown) containing powder material such as premix dry mortar or cement is opened with the cutter 10 to release the powder. Materials are put into the hopper 6.

Next, when the motor M is driven and the opening/closing shutter 8 is opened as shown by the chain line 8 in FIG.
While being stirred at step a, it is continuously conveyed downward in a fixed amount. Then, when the mixture moves to the mixing blade 1b, it is sequentially mixed with water that is continuously supplied in a fixed amount from the water supply port 12, kneaded, and guided to the screw pump 2, where it is kneaded in order from the discharge port 2C by the pump 2. Mortar, cement milk, etc. are continuously pumped out.

It should be noted that the mortar etc. which are sequentially ejected from the above-mentioned discharge port 2C are fed to the locations where they are used, such as the lock bolt mounting hole, through a hose etc. which are omitted in the figure.

〔Effect of the invention〕

As explained above, the present invention provides for a kneading mechanism such as the mixer 1, a pressure feeding mechanism such as the screw pump 2, and a power source such as the motor M that drives both mechanisms to be arranged on substantially the same axis, and the axis Because it is arranged at an angle of 45 degrees or less with respect to the horizontal plane, even when kneading mortar with a relatively low water content as in the conventional method, it is possible to prevent the mortar from being tightly compressed by its own weight. This prevents the power source from being overloaded.

In addition, since the powder material supply means such as the hopper 6 is provided on the upper part of the kneading mechanism, it is possible to drop and supply the powder material from the supply means to the kneading mechanism by its own weight, and the power of the kneading mechanism etc. Since there is no need to provide a motor for supplying powder material separately from the source, the structure is simple and can be manufactured at low cost. In this case, the kneading mechanism etc. are arranged at a low angle as mentioned above, so even if a powder material supply means such as the hopper 6 is provided above it, the height position thereof will not be too high. Since there is no powder material, there are advantages such as easy replenishment of powder materials.

[Brief explanation of drawings]

FIG. 1 is a front view of a kneading and pressure-feeding device for mortar, etc., showing an embodiment of the present invention, and FIG. 2 is an enlarged longitudinal sectional view thereof. 1 is a kneading mechanism (mixer), 2 is a pressure feeding mechanism (screw pump), 6 is a powder material supply means (hopper), and M is a power source (motor).

Claims (1)

[Claims] (1) In a kneading and pumping device for mortar, etc., which continuously kneads powder materials such as premix dry mortar and cement with water and pumps the mixture, the kneading mechanism for the above powder material and water, and the kneaded product. The pumping mechanism that pumps out the water and the power source that drives both mechanisms are located approximately on the same axis, and the axis is set at 45 degrees with respect to the horizontal plane.
A kneading and pressure-feeding device for mortar or the like, characterized in that the kneading mechanism is arranged to be inclined at an angle of less than .degree. and has a powder material supply means above the kneading mechanism.