JPH09159591A - Simultaneously measuring device of strength and load directional diameter of object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously and accurately measure an outside diameter and crash strength of an object such as a catalyst and a granulated material in a short time. SOLUTION: An upper indenter 2 driven in the vertical direction by a motor is arranged so as to be vertically freely movable, and a switch 3 to set the origin is arranged in the middle of this upper indenter 2, and a load cell 4 is arranged under the upper indenter 2. In this case, first of all, a sample 8 is not placed on the load cell 4, and the upper indenter 2 is lowered, and the whole strokes between the origin when the upper indenter 2 exists in a position of the switch 3 and a contact point of the upper indenter 2 and the load cell 4 are measured. Next, the sample 8 is placed on the load cell 4, and the upper indenter 2 is similarly lowered as mentioned above, and a lowering stroke between time when the upper indenter 2 is positioned in the origin and the time when it contacts with the sample 8 is found, and an outside diameter of the sample 8 = (the whole strokes - the lowering stroke) is calculated. At the same time, the upper indenter 2 is moved downward further, and the sample 8 is crashed, and crash strength being a maximum load at that time is measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the breaking strength and the diameter in the weighting direction of an object (catalyst) for simultaneously measuring the breaking (crushing) strength and the diameter in the weighting direction of an object, especially a test sample such as a catalyst or a granulated material The present invention relates to a simultaneous measuring device.

[0002]

2. Description of the Related Art Conventionally, the measurement of the outer diameter of an object such as a catalyst or a granulated material has been manually performed by a caliper or a micrometer.

Further, accordingly, the following technology is disclosed in "Granulated Material-Strength Test Method" of Japanese Standards Association Luminescence on April 30, 1993. This technique will be described with reference to FIGS.

FIG. 6 is a schematic view showing the structure of a crushing strength tester, and FIG. 7 is an enlarged view of a load section.

The test method is as follows.

(1) One specimen 33 is placed on the fixed compression surface 32a of the tester at approximately the center thereof.

(2) The fixed compression surface 32a and the movable compression surface 3
The distance between both compression surfaces is measured and recorded at a position where 4a contacts the sample 33, and this is set as the size of the sample 33. However, if the size of the sample in the compression direction is measured in advance, the measurement of this interval may be omitted.

(3) The movable pressing board 34 is moved at a constant speed to apply a load to the sample 33.

Reference: The pressing speed of a general granulated product having a size of 2 to 20 mm is about 0.15 to 0.30 mm / s.

(4) The maximum indicated value of the load until the specimen 33 is completely destroyed is recorded, and this is taken as the crush strength of the specimen 33. However, in the case where the maximum indication value until the destruction is not recorded and the fracture is clearly recognized in the compression process, the load at the time of the fracture is taken as the crush strength and the displacement amount is recorded.

Here, the granulated product is a powder molded product having a relatively constant shape produced by a granulating operation, and is generally called granule, pellet, briquette, tablet or the like.

The crushing strength is a strength that represents resistance to breakage of the granulated material due to compression.

[0013]

As described above, since the diameter and the crushing strength of an object such as a granulated substance have been separately measured in the conventional art, the crushing strength is measured after the diameter is measured. In case the granules are aligned in the same weighting direction, that is, it is difficult to make the measurement direction of the diameter of the granules and the weighting direction the same, and it takes a lot of time and labor to measure both. However, there is a drawback that accurate measurement is difficult.

The present invention has been made in view of the above-mentioned conventional circumstances. Therefore, the object of the present invention is to eliminate the above-mentioned drawbacks inherent in the prior art, and to improve the outer diameter of an object such as a catalyst or a granulated product. An object of the present invention is to provide a simultaneous measurement device for the strength of an object and the diameter in the weighting direction, which enables simultaneous accurate measurement of crushing strength in a short time.

[0015]

In order to achieve the above object, the apparatus for simultaneously measuring the strength and diameter in the weighting direction of an object according to the present invention comprises an upper indenter which moves up and down, and a motor which drives the upper indenter up and down. , A switch for detecting the measurement origin when the upper indenter is descending, and counting the number of rotations of the motor when the upper indenter passes through the switch, and counting when the load cell or the sample to be measured is contacted. A counter that stops, and a load cell that is arranged immediately below the upper indenter, detects the contact of the upper indenter, and detects the maximum load received when the sample to be measured placed on the upper side is crushed by the upper indenter, , A micro controller for inputting the output signal of the load cell and the output signal of the switch, performing various arithmetic processing based on these signals, and controlling the motor. Constituted by a computer.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a preferred embodiment of the present invention.

FIG. 1 is a block diagram showing an embodiment of the present invention.

Referring to FIG. 1, reference numeral 1 indicates a motor for driving an upper indenter 2 in a vertical direction, and a conversion unit for converting a rotational motion of the motor into a reciprocating (vertical) motion is included in the motor 1. It is assumed that Reference numeral 3 denotes a switch that detects the descending origin of the upper indenter 2, and is composed of, for example, a photoelectric switch. Reference numeral 4 is a load cell for detecting the contact of the upper indenter 2. Reference numeral 5 denotes a microcomputer that receives detection signals from the motor 1, the switch 3, and the load cell 4, performs various calculations based on these signals, and controls the motor 1. Reference numeral 6 denotes a display for displaying the output result of the microcomputer 5, and reference numeral 7 denotes other equipment to which the output result of the microcomputer 5 is transmitted.

Next, the operation of the present invention will be described with reference to FIGS. 1, 2 and 3.

First, to explain the setting operation of all strokes, the motor 1 is driven, the upper indenter 2 is lowered from the upper part, and the number of revolutions of the motor 1 is counted at the time when the photoelectric 3 is passed (origin). start. When the upper indenter 2 comes into contact with the lower load cell 4, the number of rotations of the motor 1 is stopped. At this time, a signal is output from the load cell 4 and supplied to the microcomputer 5. The count number at this time is the total stroke of the upper indenter 2. This operation is the operation of determining the origin of the lowering operation of the upper indenter 2 and setting the entire stroke. As shown in FIG. 2, the total stroke is the length from the origin of the upper indenter 2 to the surface of the load cell 4.

Next, the simultaneous measurement operation of the crushing strength and the diameter in the weighting direction of an object such as a catalyst or a granulated material will be described. First, the sample 8 as the object to be measured is placed on the load cell 4. Next, the motor 1 is driven again, the upper indenter 2 is lowered from the upper part, and counting of the number of rotations of the motor 1 is started at the time when the upper indenter 2 passes the photoelectric switch 3 (origin).

When the upper indenter 2 comes into contact with the lower sample 8, counting of the number of revolutions of the motor 1 is stopped, but the motor 1 continues to operate without stopping.

The contact of the upper indenter 2 on the sample 8 causes the load applied to the load cell 4 to start increasing. The maximum load applied when the load applied to the load cell 4 by crushing the sample 8 is reduced is the breaking strength. The signal corresponding to the weight applied to the load cell 4 is always transmitted to the microcomputer 5, processed by the microcomputer 5, further displayed on the display 6, and transmitted to other devices 7.

Since the number of revolutions of the motor 1 measured earlier is shorter than the total stroke by the diameter of the sample 8, the upper indenter 2 is moved from the entire stroke set as described above. The value obtained by subtracting the descending stroke when contacting the sample 8 is the sample 8 such as the catalyst.
Is the diameter in the weighting direction (see FIG. 3).

The microcomputer 5 inputs the output of the photoelectric switch 3 and the signal generated from the load cell 4,
The arithmetic processing and the like are executed based on these signals, and the breaking (crushing) strength and the diameter in the weighting direction of the sample 8 are output to the display 6 and other devices 7.

FIG. 4 shows the operation flow of the setting operation of all strokes described above, and FIG. 5 shows the operation flow of the operation of measuring the crushing strength of the object such as the catalyst and the diameter in the weighting direction.

That is, referring to FIG. 4, in the case of origin derivation and full stroke setting operation, first, step S
At 1, the microcomputer 5 issues a descending output command to the motor 1, and the motor 1 executes the descending operation of the upper indenter 2. Next, in step S2, it is determined whether or not the upper indenter 2 has passed the origin, which is the position of the photoelectric switch 3. If YES after passing the origin, step S3
The origin is recorded with.

Next, in step S4, it is determined whether or not a weight is applied to the load cell 4, and YES is given if there is a weight.
In this case, the stroke from the origin is calculated in step S5, all strokes are set in step S6, and the process ends.

Next, referring to FIG. 5, in the case of measurement,
Steps S1 to S6 are executed in the same manner as in FIG. 4,
However, since the sample 8 to be measured is placed on the load cell 4, the sample 8 is calculated from all the strokes determined in FIG. 4 in the stroke calculation from the origin in step S5.
Strokes are subtracted from the diameter.

Next, in step S6, the microcomputer 5 calculates a sample length obtained by subtracting the calculated stroke from the total stroke. Next, step S
In 7, it is judged whether or not the maximum weight is applied, and the maximum weight of YE
In the case of S, the crushing strength is measured in step S8, and the process ends.

[0031]

As described above, according to the present invention,
Compared to the conventional device that individually measures the diameter and crushing strength, the work procedure is further simplified, and the diameter and crushing strength in the direction where the load is actually applied are simultaneously and accurately,
It is possible to measure in a short time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram for explaining a setting operation of all strokes according to the present invention.

FIG. 3 is a diagram for explaining the operation of measuring the crush strength and the diameter in the weighting direction of an object such as a catalyst according to the present invention.

FIG. 4 is a flowchart for explaining a setting operation of all strokes according to the present invention.

FIG. 5 is a flow chart for explaining a crushing strength and an operation of measuring a diameter in a weight direction of an object such as a catalyst according to the present invention.

FIG. 6 is a diagram for explaining a conventional technique.

FIG. 7 is an enlarged view of the load unit shown in FIG.

[Explanation of symbols]

 1 ... Motor 2 ... Upper indenter 3 ... Photoelectric switch 4 ... Load cell 5 ... Microcomputer 6 ... Display 7 ... Other equipment

Claims (5)

[Claims] 1. An upper indenter that moves up and down, a motor that drives the upper indenter up and down, a switch that detects a measurement origin when the upper indenter descends, and the motor when the upper indenter passes through the switch. A counter that starts counting the number of rotations of the counter and stops counting when it comes into contact with a load cell or a sample to be measured, and a counter that is placed immediately below the upper indenter and detects contact of the upper indenter and is placed on the upper part. A load cell for detecting the maximum load received when the measurement sample is crushed by the upper indenter, an output signal of the load cell and an output signal of the switch are input, and various arithmetic processing is performed based on those signals and the motor is operated. A simultaneous measuring device for measuring the strength and the diameter in the weighting direction of an object, which comprises a controlling microcomputer. 2. The motor further comprises a conversion mechanism for converting a rotary motion into a reciprocating motion.
Simultaneously measuring the strength and the diameter in the weighting direction of the object described in. 3. The apparatus for simultaneously measuring the strength and the diameter in the weighting direction of an object according to claim 1, further comprising a counter function built in the microcomputer instead of the counter. 4. The display device according to claim 1, further comprising a display device for displaying data output from the microcomputer, and another device for transmitting the data.
Simultaneously measuring the strength and the diameter in the weighting direction of the object described in. 5. When the sample to be measured is not placed on the load cell, the motor is stopped when the upper indenter comes into contact with the load cell, and the sample to be measured is placed on the load cell. 2. The strength and weight of the object according to claim 1, further comprising: controlling the motor so as to continue driving even if the upper indenter comes into contact with the sample to be measured without stopping the motor. Simultaneous measurement device for directional diameter.