JPH075909Y2 - UV irradiation device cleaning mechanism - Google Patents

Description

[Detailed Description of Device] a. Purpose of the Invention <Industrial Field of Application> The present invention relates to a cleaning mechanism for a glass tube having an ultraviolet lamp of an ultraviolet irradiation device used for various liquid treatments.

<Prior Art> In the semiconductor and pharmaceutical manufacturing fields, the water is treated with an ultraviolet irradiation device to sterilize the water and oxidize and decompose organic substances and harmful substances. Further, recently, an ultraviolet irradiation device has been used for the same purpose also in the fields of water / sewage treatment and wastewater treatment. In this ultraviolet irradiation device, it is unavoidable that contaminants such as bacteria, organic substances, and harmful substances in the liquid adhere to the glass tube containing the ultraviolet lamp while the liquid treatment is continued. It is necessary to clean the contaminants adhering to the glass tube because the amount of ultraviolet irradiation to the liquid is reduced and the treatment effect efficiency is reduced.

Conventionally, the glass tube is often washed by disassembling the ultraviolet irradiation device and taking out the glass tube, which is not only troublesome but also costly and time-consuming.

Further, as shown in FIG. 5, when the cleaning portion 5 is provided by contacting the outer surface of the glass tube 1 containing the ultraviolet lamp 2, the cleaning rod 6 is attached to the support 4 of the cleaning portion 5, and the cleaning rod 6 is attached. There is also one in which the contaminants on the glass tube 1 are peeled off and cleaned by moving the above and below and sliding the cleaning section 5 up and down on the outer surface of the glass tube 1. However, in this case, there is a problem that a predetermined space needs to be secured in the ultraviolet irradiation device 3 in order to move the cleaning rod 6 up and down, and in order to solve this problem, the cleaning unit 5 has a multistage structure. It has also been attempted to shorten the moving distance of the cleaning rod 6 by providing
There is a drawback that the pressure loss to the treated water increases with the increase of the cleaning unit 5, and further the cleaning rod 6
There is also a drawback that the O-ring 7 of the liquid-sealed portion 8 tends to be pained because the O is frequently moved up and down.

<Problems to be Solved by the Present Invention> The present invention is to improve the cleaning mechanism of the ultraviolet irradiation device as described above, and is a problem for moving the cleaning rod without disassembling the ultraviolet irradiation device. The purpose is to efficiently clean the glass tube by shortening the moving distance of the cleaning rod without taking up a large space. Another object of the present invention is to clean the glass tube without causing a pressure loss to the treated water and without damaging the O-ring for the liquid seal.

B. Configuration of the Invention <Means for Solving the Problems> The present invention is to clean a contaminant attached to a glass tube containing an ultraviolet lamp of an ultraviolet irradiator by providing a cleaning portion on the outer surface of the glass tube and cleaning the same. The present invention relates to a cleaning mechanism of an ultraviolet irradiation device for cleaning and cleaning contaminants on a glass tube by sliding the outer surface of the glass tube up and down by rotating a screw of a rotating rod.

An example of an embodiment of the present invention will be described below. In the drawings, reference numeral 1 is a quartz glass tube having a built-in ultraviolet lamp 2, and both ends of the glass tube 1 are attached to an ultraviolet irradiation device 3 in a liquid-sealed state.

The glass tube 1 has a cleaning section 5 attached to the support body 4.
Is attached to the outer surface of the glass tube 1 so as to be slidable up and down. As the cleaning unit 5, a brush as shown in FIG. 3 and a ring as shown in FIG. 4 are suitable, but the cleaning unit 5 is not limited to this.

The support 4 of the cleaning unit 5 is rotatably attached to a rotary rod 6, and the rotary rod 6 is rotatably attached by penetrating a liquid sealing unit 8 provided with a sealing material 7 such as an O-ring of the ultraviolet irradiation device 3. However, a screw 10 is provided at a portion of the rotating rod 6 which is in contact with the support 4, and a screw 11 is also provided at a portion of the support 4 which is in contact with the cleaning portion 5. The rotating rod 6 is rotated by the motor 9 to make the screw 10 Is transmitted to the screw 11 so that the cleaning unit 5 can slide up and down along the outer surface of the glass tube 1.

Teflon-based synthetic resin or synthetic rubber is suitable as the material of the cleaning unit 5, but other than this, it is a material that does not damage the outer surface of the glass tube 1, is resistant to light such as ultraviolet rays, and does not deteriorate. If you can use it.

If stainless steel is used for the supporting member 4, the rotating rod 6, the liquid sealing unit 8 and the other components of the ultraviolet irradiation device 3 that are in contact with water, the eluate does not flow out into the processing liquid.

<Action> When a stock solution containing bacteria, organic substances, etc. is made to flow into the ultraviolet irradiation device 3 through the water flow pipe 12, the stock solution is an upward flow and while passing through the device 3, the ultraviolet lamp built in the glass tube 1 Two
It is sterilized and oxidatively decomposed by the ultraviolet rays that are irradiated from it to form a treatment liquid that does not contain bacteria, organic substances, etc.
Although it will flow out of the equipment further, if this treatment is continued, contaminants such as bacteria, organic substances, and water stains will adhere to the glass tube 1, and the UV irradiation amount of the treatment liquid will decrease. Then, the glass tube 1 is washed.

In cleaning the glass tube 1, when the rotating rod 6 is rotated by the motor 9, the cleaning section 5 slides upward while rubbing the outer surface of the glass tube 1. At this time, the cleaning section 5 causes the glass tube 1 to slide. The contaminant adhered to the outer surface of 1 is peeled off. When the rotary rod 6 is rotated in the reverse direction, the cleaning unit 5 slides downward while rubbing the outer surface of the glass tube 1, and the cleaning unit 5 removes contaminants on the outer surface of the glass tube 1. When the normal rotation or the reverse rotation of 6 is repeated, the vertical movement of the cleaning unit 5 is repeated accordingly, so that the contaminants adhering to the glass tube 1 are separated and cleaned, and the glass tube 1 is cleaned.

In other words, the amount of UV irradiation to the treatment liquid is recovered, and sufficient UV irradiation treatment can be performed.

C. According to the cleaning mechanism of the ultraviolet irradiation device of the present invention,
It is possible to clean contaminants without dismantling the ultraviolet irradiation device or removing the glass tube.
Since it is a mechanism that rotates the cleaning rod without moving it up and down, it can be made compact as a whole ultraviolet device without taking up an operating space, and the life of sealing materials such as O-rings attached to the liquid sealing part of the rod can be extended. Is possible.

In addition, since a single cleaning unit is sufficient without providing a large number of cleaning units, pressure loss to the processing liquid and reduction in the ultraviolet irradiation amount do not occur. There is also an advantage that the up-and-down movement of the cleaning unit can be easily automated by rotating the motor in the forward and reverse directions.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a cleaning mechanism for cleaning a glass tube by sliding a cleaning part provided in contact with the outer surface of the glass tube up and down by a rotating rod. 2 and FIG. 2 are enlarged vertical sectional views showing a mechanism for moving the cleaning unit up and down by transmitting the rotation of the screw of the rotating rod to the screw of the support of the cleaning unit, and FIG. 3 is a cleaning unit using the brush as the support. Fig. 4 is an enlarged vertical cross-sectional view with the ring attached to the support as a cleaning unit. Fig. 5 is a conventional cleaning in which the cleaning rod is moved up and down to vertically slide the cleaning unit. It is a longitudinal cross-sectional view of the mechanism. DESCRIPTION OF SYMBOLS 1 ... Glass tube, 2 ... Ultraviolet lamp, 3 ... Ultraviolet irradiation device, 4 ... Support body, 5 ... Cleaning part, 6 ... Rotating rod, 7 ... O ring, 8 ... Liquid sealing part.

Claims (1)

[Scope of utility model registration request] 1. An ultraviolet irradiation device for performing liquid treatment,
For cleaning contaminants adhering to the outer surface of the glass tube containing the ultraviolet lamp, a cleaning unit is provided on the outer surface of the glass tube, and the cleaning unit is rotated by rotating the screw of the rotary rod attached to the ultraviolet irradiation device.
A cleaning mechanism for an ultraviolet irradiation device that slides the outer surface of the glass tube up and down to remove and clean contaminants.