JPH089637Y2 - measuring device - Google Patents

Description

[Detailed Description of the Invention] {Industrial application field} The present invention relates to a measuring device for measuring pH, ORP and the like of a liquid.

{Prior Art} When measuring the pH, ORP, etc. of a test liquid such as an aqueous solution, the components of the test liquid are dispersed almost uniformly, so for other purposes, stirring of the test liquid before measurement is performed. A known agitator for agitating the test liquid when, for example, the one shown in FIG. 2 is known.

In FIG. 2, 31 is a beaker on which the liquid to be tested 32
Has been injected. 33 is a magnetic stirrer, on which the beaker 31 is placed. 34 is a stirrer placed in the beaker 31, and 35 is a liquid sensor such as a pH meter.

Stirring of the test liquid 32 by this agitator operates the magnet stirrer 33 and moves the stirrer 34 by magnetic force to stir the test liquid 32.

 The agitator shown in FIG. 3 is also known.

In FIG. 3, reference numeral 36 is a motor, and a blade 38 for stirring is attached to an end of a shaft 37 of the motor. And
The blade 38 is inserted into the test liquid 32 of the beaker 31. Reference numeral 35 is a liquid sensor unit.

In this agitator, the blades 38 inserted into the test liquid 32 are rotated by the motor 36 to stir the test liquid 32.

{Problems to be solved by the invention} In the conventional stirrer, the one shown in FIG. 2 requires the agitator 34, and the one shown in FIG. 3 requires the trouble of inserting the blades 38 into the beaker 31. However, when the amount of the test liquid 32 is large, the time required for the measurement becomes long.

In addition, as described above, since the agitator 34 or the blades 38 are respectively put into the test liquid 32, there is a possibility that the test liquid 32 is contaminated by the substances attached to these, and particularly, the test liquid 32 is many. That is, when the number of beakers 31 is large, there is a problem that it is necessary to wash the agitator 34, the blades 38, and the like, and the test liquid 32 is likely to be contaminated by the substances attached to these.

The present invention solves the above problems, and provides a measuring device capable of efficiently and highly accurately measuring a plurality of test liquids by agitating a plurality of test liquids without putting anything other than a sensor unit in the test liquid. It is intended for the purpose of hearing.

{Means for Solving the Problems} The measuring apparatus of the present invention has the following means for achieving the above objects.

That is, according to the invention described in claim (1), the liquid sensor in which the tip portion is immersed in the test liquid in the Z direction, the mounting member fixed to the base portion of the liquid sensor, and the mounting member Z-direction support rod that guides in the direction and its Z
A movable member that supports the directional support rod, a Z-direction endless belt that is fixed to the movable member and is supported by the movable member so as to be freely rotatable in the Z direction, and a Z-direction endless belt for driving the Z-direction endless belt. A Z motor, an X-direction support rod for guiding the movable member in the X-direction, an X-direction endless belt fixed to the movable member so as to be freely rotatable in the X-direction, and the X-direction endless belt. An X motor for driving is provided, and the measurement is performed after the test liquid is stirred by the liquid sensor.

Further, in the invention described in claim (2), the invention defined in claim (1)
The X-direction support rod, the X-direction endless belt, and a slide member that supports the X motor; a Y-direction support rod that guides the slide member in the Y direction; and a Y-direction support rod that is fixed to the slide member. It is characterized by comprising a Y-direction endless belt supported so as to be freely rotatable and a Y motor for driving the Y-direction endless belt.

{Action} In the invention according to claim (1), by driving the X motor, the liquid sensor is made to correspond to the liquid to be inspected, and then the Z motor is driven to inspect the tip portion of the liquid sensor. After stirring the test liquid by immersing it in the liquid and moving it in the Z direction, the measurement can be performed. When the measurement of one test liquid is completed, the X motor is driven to drive another test liquid. Move the liquid sensor to
Similarly, a plurality of test liquids can be continuously and efficiently measured.

Further, in the invention according to claim (2), by driving the Y motor, the liquid sensor can be moved in the Y direction, and it is possible to efficiently measure a larger number of test liquids.

{Example} An example of the measuring apparatus of the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 is a horizontally arranged support rod (Y direction), both ends of which are supported by supports 2a and 2b.
Also, the pulleys 3a, 3b are supported by the support members 2a, 2 via the shafts 4a, 4b.
It is attached to b. Reference numeral 5 denotes a slide member slidably attached to the support rod 1, to which a pulley 3 is attached.
A part of a timing belt (Y-direction endless belt) 6 stretched over a and 3b is fixed. A stepping motor 7 drives the pulley 3a.

Reference numeral 8 denotes a horizontal support rod (X direction) whose end is fixed to the slide member 5 in the direction orthogonal to the axis of the support rod 1, and the support member 9 provided at the other end of the support rod 8 and A timing belt (X-direction endless belt) 12 is stretched around pulleys 11a and 11b attached to the slide member 5 via support shafts 10a and 10b. A movable member 13 is slidably attached to the support rod 8, and a part of the timing belt 12 is fixed to the movable member. 14 is pulley 11a
Is a stepping motor that drives the.

Reference numeral 15 is a support rod (Z direction) provided with its end fixed to the movable member 13 and provided in the vertical direction. The support member 16 fixed to the other end of the support rod 15 and the movable member 13 have shafts 17a, 17b
A timing belt (Z-direction endless belt) 19 is stretched around pulleys 18a, 18b attached via the. Reference numeral 20 denotes a movable body slidably attached to the support rod 15, to which a part of the timing belt 12 is fixed, and the movable body 20
The mounting member 21 of the liquid sensor unit is fixed to the. Reference numeral 22 is a stepping motor that drives the pulley 18a, and 23 is a liquid sensor unit such as a pH meter. The tip portion of the liquid sensor unit is immersed in the test liquid to measure the pH and the like. Reference numeral 24 is a control device for controlling the stepping motors 7, 14, 22 and 25 is a container into which a liquid to be tested (not shown) is injected.

In addition, the support rod 1, the support rod 8, the support rod 15
Shows one each, but these may be configured so that each of the slide member 5, the movable member 13, and the movable body 20 can be slidably supported while maintaining a predetermined state, It is arbitrary such as making a plurality of each.

In this measuring device, when the stepping motor 7 is actuated, the timing belt 6 rotates to slide the slide member 5 along the support rod 1 in the Y-axis direction. Therefore, at the same time, the support rod 8, the movable member 13, and the support rod are moved. 15. Everything else reciprocates in the Y-axis direction, causing the liquid sensor unit 23 to reciprocate in the same direction.

When the stepping motor 14 is operated, the timing belt 12 rotates to move the movable member 13 along the support rod 8 in the X direction.
Since it is slid in the axial direction, at the same time, the support rod 15 and the like slide in the X-axis direction to reciprocate the liquid sensor unit 23 in the same direction.

When the stepping motor 22 is operated, the timing belt 19 rotates, the movable body 20 slides along the support rod 15 in the Z-axis direction, and the liquid sensor unit 23 moves up and down.

Then, for the measurement of pH and the like of the test liquid injected into the container 25, the pH meter and other liquid sensor units 23 are attached to the mounting member 21. Then, the stepping motor 7 or 14 is actuated by the control device 24, and the timing sensor 6 or 12 is rotated to move the liquid sensor unit 23 in the X-axis direction or the Y-axis direction. The sample liquid is placed on the container 25 containing the liquid. Next, stepping motor 22
Is operated to lower the liquid sensor unit 23 by the rotation of the timing belt 19 to insert it into the liquid to be measured in the container 25, and at the same time, reciprocally rotate the timing belt 19 in the Z-axis direction for the liquid. The sensor part (23) is moved up and down in the container (25) to stir the test liquid.

In this way, the test liquid is agitated by the vertical movement of the liquid sensor unit 23, and then the pH of the test liquid is measured by the liquid sensor unit 23.
Others are measured.

The movement of the liquid sensor unit 23 for stirring the test liquid is performed by inserting the liquid sensor unit 23 into the container 25 and then alternately actuating the stepping motors 7 and 14 by the control device 24 to operate the timing belts 6 and 12. It is also possible to alternately and reciprocally move to form a circular shape or a rectangular shape.

Further, the timing belt 6 or 12 is reciprocated by either one of the stepping motors 7 and 14, and the liquid sensor unit 23 is reciprocated in only one of the X-axis direction and the Y-axis direction, and It is also possible to stir the test liquid.

Therefore, by selecting the moving state of the liquid sensor unit 23 in accordance with the shape and size of the container 25 or the type of the test liquid, the test liquid can be stirred in a more uniform state.

Then, the timing belt 6, which rotates in the X-axis direction, Y
Since the timing belt 12 that rotates in the axial direction and the timing belt 19 that rotates in the Z-axis direction are combined, when the test liquids in a large number of containers 25 are sequentially measured, each container
The liquid sensor unit 23 is sequentially moved to the position of 25, the liquid sensor unit 23 is inserted into the container 25, and the test liquid can be stirred to measure it, and a large number of test liquids can be measured. The stirring and the measurement can be performed efficiently.

However, when the number of containers 25 is small, for example,
The number of movement directions of the liquid sensor unit 23 is determined by, for example, attaching the timing belt 19 that rotates in the Z-axis direction to the slide member 5 that slides in the X-axis direction or using only the timing belt 19 that rotates in the Z-axis direction. Is optional.

{Advantages of the Invention} As described above, the measuring device of the present invention is configured to move the liquid sensor unit in two directions or three directions, so that the tip portion of the liquid sensor is sequentially attached to a plurality of test liquids. It is possible to insert and reciprocate to stir the test liquid, and to measure each test liquid efficiently and with high accuracy. Since it is only necessary to insert the liquid sensor part into the test liquid and it is completely unnecessary to put other things, it is possible to perform the measurement efficiently even when the number of test liquids is large. In addition to being possible, contamination of the test liquid can be minimized, and the measurement accuracy of the test liquid can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIGS. 2 and 3 are perspective views of different conventional examples. 6,12,19: Timing belt, 7,14,22: Stepping motor, 21 mounting member, 23: Liquid sensor part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tasuke Yonezawa, 2nd Higashimachi, Kichijoin Miya, Minami-ku, Kyoto-shi, Kyoto Prefecture Horiba Manufacturing Co., Ltd. (72) Hiromi Okawa 2 Higashi-cho, Kichijoin Miya, Minami-ku, Kyoto, Kyoto Address Horiba Seisakusho Co., Ltd. (72) Ken Mori, 2 Higashimachi, Kichijoin Miya, Minami-ku, Kyoto City, Kyoto Prefecture (56) Reference Horiba Seisakusho Co., Ltd. (56) Reference Japanese Unexamined Patent Publication No. 1-232248 (JP, A) -122833 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A liquid sensor having a tip portion immersed in a liquid to be tested in the Z direction, a mounting member fixed to a base portion of the liquid sensor, and a Z direction support rod for guiding the mounting member in the Z direction. A movable member that supports the Z-direction support rod, a Z-direction endless belt that is fixed to the movable member and is supported by the movable member so as to be freely rotatable in the Z-direction, and the Z-direction endless belt. A Z-motor for driving, an X-direction support rod for guiding the movable member in the X-direction, an X-direction endless belt fixed to the movable member so as to be freely rotatable in the X-direction, and its X An X motor for driving a direction endless belt, and the measurement is performed after the test liquid is stirred by the liquid sensor. 2. A slide member that supports the X-direction support rod, the X-direction endless belt, and an X motor, a Y-direction support rod that guides the slide member in the Y direction, and a fixed member to the slide member. The Y-direction endless belt rotatably supported in the Y-direction and a Y motor for driving the Y-direction endless belt are provided. measuring device.