JP7071743B2 - Cement kneading device - Google Patents

Description

The present invention relates to a cement kneading device capable of providing cement having a hardness according to a purpose of use by changing the compressive force during cement kneading.

The strength of concrete is determined by the weight ratio of cement and water (water-cement ratio), and the smaller the water-cement ratio (larger cement-water ratio), the greater the strength of concrete. Therefore, the stronger the concrete is obtained by kneading with less water, and it is necessary to sufficiently compact the concrete with as little water as possible in order to make a strong concrete structure.

However, if the amount of water is too small, the fluidity of the concrete will deteriorate, resulting in poor workability and adverse effects such as the concrete not reaching the corners. Therefore, in the actual work, concrete adjusted to an appropriate softness according to the purpose of use is used.

The applicant has proposed a feeding device for transporting granulated cement to be sprayed on a slope or the like using compressed air (Patent Document 1). In this feeding device, the cement or the like to be fed is agitated by the supply mechanism (A), and the stirred cement or the like is pressed while being sent to the tip of the transport / compression casing (10), and the cement or the like is pushed. When it is hardened, the opening / closing mechanism (C) operates to open the tip opening portion of the transport / compression casing (10).

Then, the compacted cement or the like is fed out from the tip of the casing for transporting / compressing (10) into the casing for thawing / air mixing (40), the compacted cement or the like is re-dissolved, and the pressure is appropriately conveyed. It is configured to send air to transport the unraveled cement and the like. This feeding device makes it possible to provide cement and the like having a hardness suitable for spraying.

Japanese Patent No. 4702683

However, in the feeding device of Patent Document 1, in order to adjust the hardness of cement or the like, the cement or the like is compacted in the transport / compression casing (10), and the cement or the like is re-dissolved / air-mixed casing (40). Since the hardness and particle size of cement and the like are adjusted by unraveling within, there is the inconvenience that it takes time to adjust the hardness to the intended use.

Moreover, although this feeding device can be adjusted to a hardness suitable for spraying cement or the like, it is not possible to change the compressive strength of the cement to provide a cement having a hardness suitable for other purposes. It was a configuration that could not be done.

That is, in this feeding device, when the cement or the like is pressed to a predetermined pressure, the opening / closing mechanism (C) operates to open the tip opening portion of the transport / compression casing (10). It is configured in.

Although such an opening / closing mechanism (C) can be preset to a hardness that allows it to be decomposed again, it is difficult to freely change the compressive strength to provide cement having a hardness suitable for the purpose of use. It was a composition.

Therefore, the present invention was created to solve the above-mentioned problems, and can be adjusted to an arbitrary hardness when the cement is kneaded and compressed, and a cement having a hardness suitable for the purpose of use is provided. The purpose is to provide a cement kneading device that can be used.

The first means in the present invention in order to achieve the above object is a cement kneading device that feeds the cement in the compression casing 10 to the tip side while kneading it with the compression rotary blade body 12 and pressurizes it to an arbitrary hardness. A pressing mechanism 20 is provided with a closing plate body 21 for opening and closing the tip opening 13 of the compression casing 10 so as to be openable and closable, and the closing plate body 21 is supported by a pressing force that can be changed from the tip direction of the compression casing 10. And a load measuring instrument 30 mounted on the pressing mechanism 20.
The pressing mechanism 20 is provided with a plurality of support rods 22 having one end connected to the obstruction plate 21, and an insertion hole installed on the other end side of the support rods 22 to slidably insert the support rods 22. Support board 23 having 23A and
A coil spring 24 that is externally fitted to the support rod 22 between the support plate 23 and the closing plate 21 and presses and urges the closing plate 21 at the time of covering.
A compression adjuster 25 for adjusting the pressing force of the coil spring 24 mounted on the support rod 22 is provided.
The load measuring instrument 30 includes a measuring rod 31 connected from the closing plate body 21 to the load measuring instrument 30, and when the closing plate 21 is opened by the pressurized cement in the compression casing 10. It is configured to measure pressure from the moving distance of the measuring rod 31 .
The pressing mechanism 20 supports the lid of the closing plate 21 with a predetermined pressing pressure, and the pressure when the closing plate 21 is opened by the pressurized cement P in the compression casing 10 is the pressure. It is configured to measure with the load measuring instrument 30.

As described in claim 1 of the present invention, the pressing mechanism 20 supports the lid of the closing plate 21 with a predetermined pressing pressure, and the closing plate 21 is opened by the pressurized cement in the compression casing 10. By configuring the load measuring instrument 30 to measure the pressure at that time, it is possible to measure the pressure when the cement P having an arbitrary hardness opens the closing plate body 21. Therefore, by adjusting the pressure at which the closing plate body 21 opens, it is possible to adjust the hardness to an arbitrary value suitable for the purpose of use when kneading the cement.

The pressing mechanism 20 includes a coil spring 24 that is externally fitted to a plurality of support rods 22 between the support plate 23 and the closing plate 21 to press and urge the closing plate 21 at the time of covering, and the support plate 23. Since it is equipped with a compression adjuster 25 for adjustablely fixing the length of the other end side of the support rod 22 protruding from the insertion hole 23A, the elastic strength of the coil spring 24 and the number of used coil springs 24 can be changed. , It becomes easy to set any supporting pressure. As a result, the pressure can be adjusted according to the hardness of the intended use.

Since the load measuring instrument 30 is configured to measure the pressure from the moving distance of the measuring rod 31 when the closing plate 21 is opened by the pressurized cement in the compression casing 10, the measuring rod 31 measures the pressure. It is possible to measure the pressure when the cement of the desired hardness is discharged. Therefore, it is possible to reproduce the hardness of the cement adapted for each purpose of use by the measured value of the load measuring instrument 30.

As described above, according to the present invention, when the cement is kneaded and compressed, the original object of being able to adjust the hardness to an arbitrary degree is achieved.

It is a front sectional view which shows one Example of this invention. It is a plan sectional view which shows one Example of this invention. It is a side view which shows one Example of this invention. It is sectional drawing of the main part which shows the covering state of the closed plate body of this invention. It is sectional drawing of the main part which shows the opening state of the closed plate body of this invention.

The present invention is a cement kneading device that pressurizes cement to an arbitrary hardness by feeding the cement P in the compression casing 10 to the tip side while kneading with the compression rotary blade body 12. The basic configuration of the present invention includes a compression casing 10, a pressing mechanism 20, and a load measuring instrument 30 (see FIG. 1).

The compression casing 10 is a tubular member installed under the hopper 1 that supplies materials such as cement P, and the cement P or the like is supplied from the hopper 1 to the input port 11 on the base end side of the compression casing 10. (See Fig. 2). A compression rotary blade 12 is mounted inside the compression casing 10. Then, the charged cement P or the like is sent to the tip end side of the compression casing 10, and the cement P or the like is compressed on the tip end side while kneading (see FIG. 1).

The pressing mechanism 20 includes a closing plate body 21 for opening and closing the tip opening 13 of the compression casing 10 so that the closing plate body 20 can be freely changed from the tip direction of the compression casing 10. It is a supporting mechanism (see FIG. 1). In addition to the closing plate body 21, the pressing mechanism 20 includes a support rod body 22, a support plate body 23, a coil spring 24, and a compression adjuster 25.

The support rod 22 is a plurality of rod-shaped members whose one end is connected to the closing plate 21, and the support plate 23 is installed on the other end side of the support rod 22 (see FIG. 4). The support board 23 is formed with an insertion hole 23A through which the support rod 22 is slidably inserted. Further, the coil spring 24 is externally fitted to the support rod 22 between the support plate 23 and the closing plate 21, and the closing plate 21 at the time of covering is supported by the pressing force of the coil spring 24.

A shaft support rod 26 is fixed to the illustrated block plate 21 together with the support rod body 22, and the shaft support rod 26 is slidably inserted through the center of the support board 23 (see FIG. 3). Further, a plurality of support rods 22 are mounted along the peripheral edge of the support board 23, and these support rods 22 are selected and coil springs 24 of an arbitrary number and thickness are mounted. With such a configuration, the range of pressure adjustment by the coil spring 24 is widened.

Further, the pressing mechanism 20 is provided with a compression adjuster 25 for adjusting the pressing force of the coil spring 24 and a load measuring instrument 30 for measuring the pressing force (see FIG. 1).

The illustrated compression adjuster 25 uses a nut screwed to the end of the bolt-shaped support rod 22 (see FIG. 4). Then, the compression force of the coil spring 24 is adjusted by adjusting the distance between the support plate 23 and the closing plate 21 with the compression adjuster 25.

In the present invention, the pressing mechanism 20 supports the cover of the closed plate body 21, and the pressure when the closed plate body 21 is opened is measured by the load measuring instrument 30 (see FIG. 5). .. The load measuring instrument 30 is configured to measure the compression force of the coil spring 24 when the position of the coil spring 24 is adjusted in advance by the compression adjusting tool 25.

The illustrated load measuring instrument 30 is connected to the load measuring instrument 30 from the block plate body 21 and includes a measuring rod 31 that penetrates the support plate body 23 (see FIG. 4). Further, the load measuring instrument 30 is slidably mounted on the mounting table 27 and includes a slide rod 32 penetrating the support board 23. Then, as the closing plate body 21 moves, the measuring rod 31 moves and presses the load measuring instrument 30, so that the pressing force is measured while the load measuring instrument 30 moves. Although the load cell is used as the load measuring instrument 30, another pressure measuring instrument can be used as the load measuring instrument 30.

In the present invention, the cement P is compressed to a predetermined hardness by adjusting the pressing force for compressing the cement P. That is, the pressing force of the cement P when the closed plate body 21 in the covered state is opened becomes the maximum pressure at which the kneaded cement P is compressed. By measuring the pressure at the time when the cement P having a desired hardness is extruded from the tip opening 13, the load measuring instrument 30 can provide the cement P having a hardness suitable for various uses.

As the cement P of the present invention, in addition to Portland cement, mixed cement, eco-cement, granulated cement obtained by adding a special absorbent material to cement, or the like can be selected. It is also possible to mix any mixed material such as greening soil dressing and compost with this cement P.

In the present invention, the configuration is not limited to the illustrated configuration, and the configuration of the compression casing 10, the pressing mechanism 20, the load measuring instrument 30, and the like can be freely changed in design without changing the gist of the present invention. You can.

P Cement 1 Hopper 10 Compression casing 11 Input port 12 Compression rotary blade 13 Tip opening 20 Pressing mechanism 21 Closing plate 22 Support rod 23 Support plate 23A Insertion hole 24 Coil spring 25 Compression adjuster 26 Shaft support rod 27 Mounting table 30 Load measuring instrument 31 Measuring rod 32 Slide rod

Claims (1)

It is a cement kneading device that pressurizes the cement in the compression casing to an arbitrary hardness by feeding it to the tip side while kneading it with a rotating blade for compression.
A pressing mechanism that is provided with a closing plate body that can open and close the tip opening of the compression casing and supports the closing plate body with a pressing force that can be changed from the tip direction of the compression casing, and is attached to the pressing mechanism. With a load measuring instrument,
The pressing mechanism is a support board having a plurality of support rods having one end connected to the block plate body and an insertion hole installed on the other end side of the support rod body and slidably inserting the support rod body. When,
A coil spring that is externally fitted to a support rod between the support plate body and the block plate body and presses and urges the block plate body at the time of covering.
Equipped with a compression adjuster that adjusts the pressing force of the coil spring attached to the support rod,
The load measuring instrument includes a measuring rod connected from the closing plate body to the load measuring instrument, and from the moving distance of the measuring rod when the closing plate body is opened by the pressurized cement in the compression casing. Configured to measure pressure ,
The pressing mechanism supports the lid of the closing plate with a predetermined pressing pressure, and the pressure when the closing plate is opened by the pressurized cement in the compression casing is measured by the load measuring instrument. A cement kneading device characterized by being configured to do so.

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