JPH03181842A - rotating cell brush device - Google Patents

Abstract

PURPOSE:To efficiently apply wiping treatment to the outer peripheral surface of a rotary cell by providing a stopper member obstructing or permitting the free rotation of a cylindrical brush. CONSTITUTION:When a cell 10 is rotated, the cylindrical brushes 16, 18 whose outer peripheral surfaces are in contact with the cell 10 are ready to rotate with the rotation of the cell 10. When the brushes 16, 18 are present at a specific position, for example, an approach position or a separated position with respect to the axis of the cell 10, stopper members 60, 62 obstruct the free rotation of the cell 10. By this mechanism, the outer peripheral surface of the cell 10 is rubbed with the brushes 16, 18 to be cleaned. When the brushes 16, 18 are moved to a position other than the specific position, the stop of the cell 10 due to the brushes 16, 18 is released to make the brushes 16, 18 freely rotatable. Therefore, the brushes 16, 18 are also rotated with the rotation of the cell 10 and the surfaces of the brushes in contact with the outer peripheral surface of the cell 10 till then are separated from the outer peripheral surface of the cell 10 and the new surfaces of the brushes are slid with the outer peripheral surface of the cell 10 in place of the contact surfaces thereof. As a result, the cell 10 is rubbed with the new surfaces of the brushes.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotating cell brush device for removing adhering substances by wiping the outer peripheral surface of a rotating cell, etc. of an organic pollutant measuring device. Regarding.

Specifically, the present invention relates to a brush device used when the rotation cell is eccentrically rotated.

[Prior Art] As a type of organic pollutant measuring device, a light emitting element and a light receiving element are installed in a pair of eccentrically rotated cells, and by rotating the cell, the light emitting element and the light receiving element are placed on the optical path between the pixel elements. There is a known method in which the amount of liquid (absorption optical path length) is periodically changed, and the contaminant concentration is detected from the accompanying fluctuation in the amount of received light.

[Problems to be Solved by the Invention] Since dirt tends to adhere to the outer circumferential surface of the rotating cell, a brush is provided so as to be in contact with the cell.

However, since only the tip of this brush is always in contact with the outer circumferential surface of the cell, there is a problem in that peeled dirt substances tend to accumulate on the tip of the brush, and the brush wears out relatively quickly. There was also.

[Means for Solving the Problems] A brush device for a rotating cell according to the present invention is a brush device that rubs the outer peripheral surface of a cylindrical cell rotated by a drive device around a rotating shaft located at a non-axial portion of the cylinder. Regarding.

The brush device includes a pair of cylindrical brushes arranged with a cell sandwiched therebetween so that the outer periphery of the brush rubs against the outer periphery of the cell, and supports each cylindrical brush rotatably around its respective axis. A support member that supports each cylindrical brush movably in the direction toward and away from the cells; a connecting member that connects the cylindrical brushes to maintain a constant distance between the cylindrical brushes; A stopper member that prevents free rotation of the cylindrical brush when the brush is at a specific position with respect to the cell rotation axis, and allows free rotation of the cylindrical brush when the cylindrical brush is at any other position. ing.

[Operation] When the cell rotates, the cell is rotated eccentrically, so that the cylindrical brush repeats a reciprocating movement of moving away from the rotation axis of the cell and conversely approaching the rotation axis. By the way, when the cell rotates, the cylindrical brush whose outer peripheral surface is in contact with the cell also tends to rotate. When the cylindrical brush is at a specific position (for example, an approaching position or a separating position) with respect to the axis of the cell, the stopper member prevents the cell from freely rotating. As a result, the outer peripheral surface of the cell is rubbed by the cylindrical brush,
The outer peripheral surface of the cell is cleaned. When the cylindrical brush is moved to a position other than the specific position, the stop by the stopper member is released and the cylindrical brush can freely rotate. Therefore, as the cell rotates, the cylindrical brush also rotates, and the brush surface that was previously in contact with the outer circumferential surface of the cell separates from the outer circumferential surface of the cell, and a new brush surface comes into sliding contact with the outer circumferential surface of the cell instead. This results in cells being rubbed with a new brush surface. Further, the brush surface that had been in contact with the outer circumferential surface of the cell is exposed to the liquid around the cylindrical brush, and dirt substances are peeled off from the brush surface.

[Example] Examples will be described below with reference to the drawings.

FIG. 1 is a front view of a rotating cell brush device according to an embodiment of the present invention, FIG. 2 is a plan view, and FIG.
FIG. 4 is a perspective view of a portion taken along line m, and FIG. 4 is a schematic perspective view of the upper part of the embodiment device.

The cylindrical cell 10 can be eccentrically rotated by a rotating shaft 12 provided eccentrically from its axial center position.
It is rotationally driven around the rotating shaft 12 by a driving device 14 . A first cylindrical brush 16 and a cylindrical brush 's2 are installed so that their outer peripheral surfaces are in sliding contact with the outer peripheral surface of this cell 10. These cylindrical brushes 16.18 are
As shown in the figure, a rubber pipe 2 is attached to the outer periphery of the rotating shaft 20.
4.26 is attached, and a soft brush body 28.30 made of a porous material such as a sponge or a hair-like material is attached to the outer periphery of this rubber vibrator 24.26, and the rotating shaft 20.22 is a cylinder. The brushes 16 and 18 are provided through the axial center position of the brushes 16 and 18.

Bearings 32.3 are provided at the upper and lower ends of the rotating shafts 20 and 22, respectively.
4.36.38 is provided and the upper bearing 32.3
6 are connected by a tie rod 40, and the lower bearing 3
The cylindrical brushes 16 and 18 are connected by a tie rod 42, and the spacing between the cylindrical brushes 16 and 18 is always constant.

The upper parts of the rotating shafts 20 and 22 are each provided with guide bars 44.4.
6, and is slidable in the left-right direction in FIG. Further, the lower portion of the rotating shaft 20.22 is inserted into a guide groove 50 provided in the base 48, and is similarly slidable in the left-right direction in FIG. The guide bars 44, 46 are provided in pairs, and each guide bar 44, 46 is connected to the frame 5.
It is connected to the base 48 by 2.54.

A gear 56.58 is fixed to the lower part of the rotating shaft 20.22, and a stopper body 60.62 that can engage with the teeth of the gear 56.58 is fixed to the base 48.

In the rotary cell brush device configured in this way,
When the drive device 14 is rotated, the cell 10 rotates eccentrically about the rotating shaft 12. Since the cylindrical brushes 1B, 1B are in contact with this cell 10, they slide in the left-right direction in FIG. 1 as the cell 10 eccentrically rotates. Further, the cylindrical brushes 16 and 18 receive frictional force from the outer peripheral surface of the cell 10,
It tries to rotate in the opposite direction to the cell 10. by the way,
Figure 53 and '! As shown in figure J6, the cylindrical brush 16.1
8 is shifted to the right in the figure, the stopper bodies 60, 62 are not engaged with the gears 56, 58, and the cylindrical brushes 16, 18 can freely rotate. Therefore,
As the cell 10 rotates, the cylindrical brushes 16,18 rotate freely.

From this state, when the cell 10 is rotated by 180 degrees, the cylindrical brush 16.1 is rotated as shown in FIG.
8 shifts to the left in the figure. And gear 5-6.5
8 engages with the stopper bodies 60 and 62, and the cylindrical brush 16
．． 18 is placed in a rotation-blocking state. In this rotation-blocking state, only the cell 1° rotates, and the outer peripheral surface of the cell 10 is rubbed by the brush body 28, 30, removing deposits on the outer peripheral surface of the cell 10. is removed.

When the cell 10 further rotates 180 degrees from this wiping state and returns to the state shown in FIG. 3, the cylindrical brush 16
．． 18 rotates together with the cell 10, the brush surface that was previously in contact with the cell 10 separates from the outer peripheral surface of the cell 10, and the brush surface that was not in contact with the cell 10 until then is now connected to the cell 1.
Comes into contact with 0.

Cell like this! The brush surfaces that come into contact with the cells 10 are updated one after another, so dirt on the cells 10 is efficiently removed by being rubbed by the new brush surfaces. Further, there is no local wear of the brush body 28, 30, resulting in a long life. Furthermore, when the brush surface that had been in contact with the outer peripheral surface of the cell 10 is no longer in contact with the outer peripheral surface of the cell 10, the peeling substance adhering to the brush body 28, 30 is dispersed in the liquid and removed. The brush body 28.
When the brush 30 comes into contact with the cell 10 again, the brush surface has been returned to a very clean condition.

As is clear from the above description, in this embodiment the tie rods 40 and 42 are used as connecting members for keeping the cylindrical brushes 16 and 18 at a constant distance. Further, the base 48 having the guide bars 44, 46 and the guide groove 50 is used as a support member that supports the cylindrical brush 16, 18 so as to be movable toward and away from the cell 10.

Furthermore, the stopper body 62 and the gears 56 and 58 constitute a stopper member for free rotation and rotation prevention of the cylindrical brush.

FIG. 7 is a front view of a pollutant measuring device equipped with the device of the above embodiment, and FIG. 8 is '! It is an enlarged sectional view taken along the line ■-■ in Figure J7.

In FIG. 7, a pair of eccentrically rotated cells IOA and IOB are installed in a truncated cone-shaped measurement a70, a light emitting element is installed in the cell IOA, and a light receiving element is installed in the cell 10B. ing. An analysis section main body 72 is installed above the measurement tank 70, and includes a rotation drive device for the cells IOA and IOB, as well as a drive circuit for the light emitting element in the cell IOA,
A signal processing circuit for processing the output signal of the light receiving element in the cell 10B to calculate the concentration is installed.

The measurement tank 70 is installed on a pedestal 74.
A sample liquid is introduced into the chamber from a pipe 78 equipped with a flow rate adjustment valve 76, and a sample waste liquid is discharged from a pipe 80. 82
is the drain pipe. Other symbols in FIG. 8 indicate the same parts as in the above embodiment.

When the cells IOA and IOB are rotated in this measuring device, the distance between the outer peripheral surfaces of the cells IOA and IOB changes periodically, and the light absorption optical path length by the liquid between the light emitting element and the light receiving element changes periodically. The signal processing circuit of the analyzer main body 72 calculates the contaminant concentration in the sample liquid from this change in luminous intensity, and calculates the concentration of contaminants in the sample liquid from this change in luminous intensity, and the detected luminous intensity of the light receiving element also changes periodically. Output the signal to etc.

In this pollutant measuring device, cell 10A, IOB
Since the outer circumferential surface of the sensor is clean, extremely accurate measurements can be made and maintenance is easy.

[Effects] As described above, according to the brush device of the present invention, the outer peripheral surface of the rotating cell can be efficiently wiped. Furthermore, the life of the cylindrical brush is extremely long.

[Brief explanation of drawings]

Fig. 1 is a front view of an embodiment of the device of the present invention, Fig. 2 is a plan view, Fig. 3 is a cross-sectional perspective view of main parts, Fig. 4 is a perspective view of the upper part, and Figs. 5 and 6 are operation. It is an explanatory diagram. FIG. 7 is a front view of the pollutant measuring device, and FIG. 8 is an enlarged sectional view taken along the line ■-■ in FIG. 10, IOA, IOB... Cell, 14... Drive device, 16.18... Cylindrical brush, 20.22... Rotating shaft, 44.46... Guide bar 48... Base, 50... Guy 56.58
...Gear, 60.62...Stopper body. Do Qing,

Claims (1)

[Claims] A brush device that rubs the outer circumferential surface of a cylindrical cell rotated by a drive device around a rotation axis located at a non-axial portion of the cylinder, the brush device having an outer circumferential surface that touches the outer circumference of the cell. A pair of cylindrical brushes are arranged with the cell in between so as to rub against the surface, each cylindrical brush is supported rotatably around its respective axis, and each cylindrical brush is moved toward and away from the cell. a supporting member that supports the cylindrical brushes so as to be movable; a connecting member that connects the cylindrical brushes to maintain a constant distance between the cylindrical brushes; A rotary cell brush comprising a stopper member that sometimes prevents free rotation of the cylindrical brush and allows free rotation of the cylindrical brush when the cylindrical brush is in other positions. Device.