JP5128516B2 - Air diffuser - Google Patents

Description

  The present invention relates to an air diffuser.

  In general, when water to be treated is treated using aerobic microorganisms, an air diffuser for aeration is installed in a treatment tank. In this air diffuser, cleaning work for eliminating clogging caused by operation for a certain period, replacement work for damaged parts, and periodic inspection work are required. As an apparatus for smoothly performing these operations without draining water from the treatment tank, an elevating apparatus for an air diffuser is known (for example, see Patent Document 1). Here, for reasons such as prevention of odor diffusion of the water to be treated, the upper opening of the treatment tank where the diffuser is taken in and out is often formed narrowly. And, in the lifting device described in Patent Document 1, the one end of the diffuser installed horizontally is pulled up by, for example, a chain, thereby rotating the diffuser 90 degrees around the hinge on the other end as an axis, and further, The upright diffuser was lifted vertically to take it out of the treated water in the treatment tank.

Japanese Patent Laid-Open No. 7-115730

  As described above, in the conventional device described in Patent Document 1, the air diffusing device is shifted from the horizontal state to the vertical state once, and then further lifted (or vice versa when lowered). There was a problem that the lifting work was complicated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an air diffuser that can be taken in and out from the opening at the top of the treatment tank and can be easily taken in and out. To do.

In order to solve the above problems, the air diffuser of the present invention can be moved up and down into the treatment tank by the lifting means, and is an air diffuser for gas diffused into the water to be treated in the treatment tank, Along the inner wall of one of the treatment tanks, a header pipe extending in a substantially horizontal direction and communicating with a gas supply source, a diffuser opening for communicating with the header pipe and for discharging gas from the header pipe An aeration unit connected to the trachea and the elevating means and having a suspended portion for suspending the aeration tube so that it can be raised and lowered, and a guided portion spaced apart from the suspending portion in a direction opposite to the one inner wall; , inclined from the bottom of the treatment tank so as to approach the inner wall toward the upward, in cooperation with the guided portion, and a guide portion for restricting the trajectory of the lift of the air diffuser unit, the hanging element, dusting The air unit is located on the inner wall side of the center of gravity of the air unit. In the working position where the diffuser tube is substantially horizontal and the diffuser unit is raised with respect to the working position, the diffuser tube is inclined so that the end on the one inner wall side is upward with respect to the substantially horizontal direction. It is moved in the state where it was moved .

  When the air diffuser unit of the air diffuser of the present invention is lifted upward from the working position where aeration is performed by the elevating means, the air diffuser unit is guided by the guide portion while the air diffuser pipe is substantially horizontal. It is tilted and pulled up so that the end on the one inner wall side is up, and the diffuser unit can be taken out of the tank through the opening at the top of the processing tank. Further, when the air diffuser unit is lowered by the elevating means, the air diffuser has its end on the inner wall side facing up in the substantially horizontal direction while the guided portion is guided by the guide portion. Thus, the diffuser unit can be put into the tank through the opening at the top of the treatment tank, and the diffuser pipe and the header pipe can be installed at the work position so as to be substantially horizontal. Therefore, the work of putting the diffuser unit into and out of the treatment tank can be easily realized by simply moving the diffuser unit up and down by the lifting means.

The configuration of this, the air diffuser unit, the ascent / descent is inclined so that the end portion of one inner wall side of the diffuser tube is substantially horizontal direction becomes upward.

  In addition, as a specific configuration that effectively exhibits the above-described operation, the structure is provided at the bottom of the processing tank and includes a gantry for installing the aeration unit at the work position. When the header pipe is installed on the gantry, the header The structure by which a pipe | tube and a diffuser pipe are made substantially horizontal is mentioned.

  The guided portion is preferably a roller. In this case, the aeration unit can be smoothly moved up and down.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to take in / out from the opening of a processing tank upper part, taking in / out work can be performed easily.

It is the upper side figure and side view which show the air diffusion unit of the air diffusion apparatus which concerns on this embodiment. It is the side view and top view which show the state by which the diffuser was installed in the processing tank. It is the side view seen from the side orthogonal to the side view of FIG. 2 which shows the state by which the diffuser was installed in the processing tank. It is operation | movement explanatory drawing which shows a mode that an aeration unit is raised / lowered with respect to a processing tank. It is a side view which expands and shows the state in which the diffuser was installed in the processing tank. It is the side view which shows the roller which concerns on this embodiment, and its vicinity, and the II arrow directional view of the said side view. It is the side view which shows the roller which concerns on other embodiment, and its vicinity, and the II-II arrow line view of the said side view. It is a top view which shows the air diffusion unit of the air diffusion apparatus which concerns on other embodiment. It is a top view which expands and shows the roller and guide rail vicinity of the air diffusion unit shown in FIG. It is the III-III arrow line view of FIG. It is an IV-IV arrow line view of FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an air diffusion device of the invention will be described with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1A is a top view of an air diffuser unit of an air diffuser according to this embodiment, FIG. 1B is a side view thereof, and FIG. 2A is an air diffuser installed in a treatment tank. 2B is a top view, FIG. 3 is a side view seen from a side perpendicular to the side view shown in FIG. 2A, and FIG. Operation explanatory drawing which shows a mode that it raises / lowers with respect to the inside of a processing tank, FIG. 5 is a side view which expands and shows the state in which the diffuser was installed in the processing tank.

  The aeration apparatus 1 of this embodiment is installed in the bottom part of the processing tank 20, as shown to FIG. 2 (a) and (b), and aerobic processing is performed by aeration of the to-be-processed water in the processing tank 20. This is to purify the water to be treated, and includes an air diffusion unit 2, a guide rail (guide unit) 10, and a mount 13. The air diffuser 1 is called a swirl type, and as shown in FIG. 2A, the air diffuser unit 2 for performing air diffuser is opposed to the side walls (the left and right side walls in the drawing). The header pipe 3 constituting the air diffusion unit 2 is installed so as to extend along the inner wall 21 and to extend horizontally in the depth direction in the figure, closer to the inner wall 21 on the one side (right side in the drawing) than the center between them. Is done.

  As shown in FIGS. 1A and 1B, the air diffusion unit 2 includes the header pipe 3, the air diffusion pipe 4, the roller (guided part) 6, the suspension part 5, and the frame members 8 and 9 described above. ing.

  As shown in FIGS. 1 and 2, the air diffusion unit 2 has a hanging part 5 suspended by a metal chain 11c. 11 can move up and down with respect to the inside of the processing tank 20. In the present embodiment, the air diffusion unit 2 is suspended by the metal chain 11c. However, the present invention is not limited to this. For example, the air diffusion unit 2 may be suspended by a wire rope or the like.

  As shown in FIG. 2, the aeration unit 2 is installed on a gantry 13 provided at the bottom of the processing tank 20, so that the aeration unit 2 is located at a working position where aeration is performed. Thus, the header pipe 3 and the aeration pipe are arranged. 4 is substantially horizontal. Further, as shown in FIG. 5, the gantry 13 may be provided with, for example, a V-shaped header pipe fixing portion 13a. In this case, since the position of the header pipe 3 is fixed by the header pipe fixing portion 13a, it is possible to prevent vibration of the air diffusion unit 2 due to air supply and water flow.

  As described above, the header pipe 3 extends along the inner wall 21 of the processing tank 20 and in a substantially horizontal direction. The header pipe 3 is provided with a hose connection portion 7 (see FIG. 1A) for connection to an air supply hose (gas supply source) 14, whereby the air supply hose 14 and the header pipe are connected. 3 is communicated. The air supply hose 14 is for supplying gas (here, air) to the header pipe 3 and is made of a flexible material.

  The diffuser tube 4 is for diffusing the gas supplied from the header tube 3 to the water to be treated, and communicates with the header tube 3, and has a plurality of diffuser ports for discharging the gas. There are many along the four axial directions. As shown in FIGS. 1 and 2, the diffuser tube 4 extends in a substantially horizontal direction substantially orthogonal to the header tube 3, and a plurality of (8 in the example shown in FIG. 1, 8) along the axial direction of the header tube 3. Book) is arranged.

  In addition, as particularly preferable, the diffuser tube 4 is arranged so as to extend in a substantially horizontal direction substantially orthogonal to the header tube 3, but is not limited to a substantially horizontal direction substantially orthogonal to the header tube 3. 3 may be a substantially horizontal direction that is inclined with respect to 3.

  As shown in FIG. 2A, the roller 6 is guided by the guide rail 10 to limit the ascending and descending path of the air diffusion unit 2, and is opposite to the inner wall 21 from the header pipe 3. A pair is provided so as to be spaced apart in the direction (left side of FIG. 2A) and spaced in the direction in which the header pipe 3 extends. Specifically, as shown in FIG. 1, the frame members 9 extending from the end portions of the diffuser tubes 4 to the outer positions are respectively connected to both end portions of the header tube 3, and the end portions of the frame members 9 are A frame member 8 extending substantially parallel to the header pipe 3 is connected, and rollers 6 are provided at both ends of the frame member 8 respectively.

  6A is an enlarged view showing the roller 6 shown in FIG. 2A and its vicinity, and FIG. 6B is a view taken along the line II in FIG. 6A. One roller 6 is provided at each end of the frame member 8 so as to be rotatable about the extending direction of the frame member 8 as an axis.

  Moreover, Fig.7 (a) is the figure which shows the roller 6 which concerns on other embodiment, and its vicinity, FIG.7 (b) is a II-II arrow line view of Fig.7 (a). In the example shown in FIG. 7, two rollers 6 a and 6 a are provided at each end of the frame member 8 so as to be rotatable about the extending direction of the frame member 8 through the roller support member 6 b. Yes. The roller support member 6b is provided at an end portion of the frame member 8 so that a substantially central portion thereof is rotatable about the extending direction of the frame member 8 as an axis.

  As shown in FIG. 1 (a), the suspending portion 5 is connected to a metal chain 11c for suspending the air diffusion unit 2 so as to be movable up and down, and is constituted by, for example, an annular member. 2 is provided closer to the inner wall 21 than the center of gravity position (upper side in FIG. 1A). In this way, by offsetting the position of the suspending portion 5 and the position of the center of gravity, the air diffuser unit 2 is such that the end portion of the air diffuser 4 on the inner wall 21 side is upward with respect to the substantially horizontal direction when ascending / descending. (See FIG. 4). The operation at the time of rising / lowering will be described later.

  The guide rail 10 is for restricting the ascending / descending path of the air diffusion unit 2 by guiding the roller 6, and as shown in FIGS. 2 and 3, as it goes upward from the bottom of the processing tank 20. A pair is provided so as to be inclined so as to approach the inner wall 21 and to be separated from the extending direction of the header pipe 3 (FIG. 2A, the depth direction of the paper surface, and the left-right direction of FIG. 3) to correspond to the roller 6. Yes. Each guide rail 10 is configured in a channel shape, the open sides face each other, and when the number of rollers 6 is one, the rollers 6 are accommodated in the guide rail 10 (see FIG. 6), and when the number of rollers 6a is two In the guide rail 10, rollers 6a, 6a are accommodated in series (see FIG. 7), and the end of the channel has a folded portion 10c to prevent the roller 6 from being detached. Further, the channel width of the upper end portion 10b of the guide rail 10 is widened to facilitate introduction into the channel from above the roller 6. The guide rail 10 is provided with a stopper 10 a that determines the lower limit of the movement of the roller 6 at a position substantially equal to the height of the gantry 13.

  Next, the operation when the air diffusion unit 2 is lowered from the outside of the processing tank 20 and installed at the work position at the bottom of the processing tank 20 will be described with reference to FIG. In FIG. 4, the air supply hose 14 shown in FIG. 2A and the like is omitted in order to avoid the drawing from becoming complicated.

  As shown in FIG. 4A, in this state, the air diffusion unit 2 is suspended via the suspension unit 5 with the roller 6 facing downward due to the offset between the position of the suspension unit 5 and the position of the center of gravity. The air diffusing tube 4 is inclined from a substantially horizontal state and is substantially vertical.

  Subsequently, the air diffuser unit 2 is lowered into the treatment tank 20 by the lifting device 11 as shown in FIG. Then, since the roller 6 enters the guide rail 10, the diffuser tube 4 is tilted so that the end on the inner wall 21 side is up with respect to the substantially horizontal direction, and the roller 6 guides the guide rail 10. While being done, the air diffusion unit 2 moves downward. When the air diffusion unit 2 is further lowered as shown in FIG. 4 (c), the roller 6 reaches the stopper 10a of the guide rail 10, and the metal chain 11c is further moved as shown in FIG. 4 (d). As the air is fed, the air diffuser unit 2 is rotated by the dead weight of the air diffuser unit 2 so that the frame member 8 to which the roller 6 is attached is tilted in the direction of the inner wall 21 of the processing tank 20 (the roller 6 is rotated). The air diffuser unit 2 rotates clockwise as an axis), and the air diffuser unit 2 is installed on the gantry 13 so that the air diffuser tube 4 and the header tube 3 are substantially horizontal.

  Next, operation | movement when raising in order to take out the aeration unit 2 out of the processing tank 20 is demonstrated using FIG. As shown in FIG. 4D, in the working position where aeration is performed, the aeration unit 2 is installed such that the aeration tube 4 and the header tube 3 are substantially horizontal. As shown in FIG. 4C, when the air diffuser unit 2 is raised by the lifting device 11, the air diffuser unit 4 is substantially horizontal in the horizontal direction due to the offset between the position of the hanging portion 5 and the center of gravity position. The inner wall 21 is inclined so that the end on the inner wall 21 side is up.

  As shown in FIG. 4B, when the air diffuser unit 2 is further raised, the air diffuser unit 2 moves upward while the roller 6 is guided by the guide rail 10 while being tilted. As shown in a), when the roller 6 comes off from the guide rail 10, the air diffusion unit 2 is made substantially vertical from the state in which the air diffusion tube 4 is tilted with the roller 6 suspended downward. And taken out of the treatment tank 20.

  In the present embodiment, the suspending portion 5 is provided closer to the inner wall 21 than the center of gravity of the air diffusing unit 2 so that the air diffusing pipe 4 is located on the inner side with respect to the substantially horizontal direction when the air diffusing unit 2 is raised / lowered. Although the wall 21 side end portion is inclined so as to be on the upper side, a similar inclination of the air diffusion unit 2 can be realized by increasing the friction between the roller 6 and the guide rail 10. Is possible. For example, a material that increases the coefficient of friction between the roller 6 and the guide rail 10 is selected, or the roller 6 is brought into strong contact with the guide rail 10. It is possible to increase the friction.

  As described above, in the present embodiment, when the aeration unit 2 of the aeration apparatus 1 is pulled upward from the working position where the aeration apparatus 11 performs aeration, the aeration unit 2 is guided by the guide rail 10 with the rollers 6. However, the air diffuser 4 is tilted and pulled up so that the end on the inner wall 21 side is upward with respect to the substantially horizontal direction, and the air diffuser unit 2 is taken out of the tank through the opening at the top of the processing tank 20. Can do. When the air diffuser unit 2 is lowered by the elevating device 11, the air diffuser unit has an end on the inner wall 21 side where the air diffuser pipe 4 is substantially horizontal with the roller 6 guided by the guide rail 10. The air diffuser unit 2 can be put into the tank through the opening at the top of the processing tank 20, and the diffuser pipe 4 and the header pipe 3 are installed at the work position so as to be substantially horizontal. it can. Therefore, the work of putting the air diffuser unit 2 in and out of the treatment tank 20 can be easily realized only by moving the air diffuser unit 2 in the vertical direction by the lifting device 11.

  As described with reference to FIG. 4, the air diffusion unit 2 is tilted when being lowered from the outside of the processing tank 20 into the tank and when being taken out from the inside of the processing tank 20. Therefore, even if the opening of the treatment tank 20 is formed narrow for reasons such as prevention of odor diffusion of the water to be treated, the air diffusion unit 2 can be easily passed through the opening of the treatment tank 20. Further, even if the upper side wall of the processing tank 20 protrudes to the inside of the tank, the air diffusion unit 2 can be installed close to the side wall 21. Particularly preferred for the air diffuser 1.

  In particular, in this embodiment, since the air diffusion unit 2 becomes substantially vertical when the air diffusion unit 2 is put in and out through the opening, a narrower opening can be passed.

  Further, as shown in FIG. 6, since the guided portion is configured by the roller 6, the air diffusion unit 2 can be smoothly moved up and down. In addition, as shown in FIG. 7, when the guided portion is constituted by the two rollers 6a, 6a, the air diffusion unit 2 can be moved up and down more smoothly.

  Next, still another embodiment of the air diffuser 1 will be described. FIG. 8 is a top view showing an air diffuser unit of an air diffuser according to still another embodiment. FIG. 9 is an enlarged top view showing the vicinity of the rollers and guide rails of the air diffusion unit shown in FIG. 10 is a view taken in the direction of arrows III-III in FIG. 11 is a view taken in the direction of arrows IV-IV in FIG.

  This embodiment is different from the embodiment shown in FIG. 1 to FIG. 7 in that one guard rail as a guide portion is used. Specifically, the air diffusion unit 2A shown in FIG. 8 has a pair of four rollers 6d, 6e, 6e, 6d as shown in FIGS. 9 to 11, and the frame member described above. Each pair is provided in series in the vertical direction at approximately the center of 8 via roller support members 6c, 6f, 6g. The roller 6d is provided on the roller support member 6c so as to be rotatable about a direction (vertical direction in FIG. 8) orthogonal to the extending direction of the frame member 8 (left and right direction in FIG. 8). The roller support members 6c, 6f, and 6g are rotatably provided with the extending direction of the member 8 as an axis. The roller support member 6c is rotatably provided at a substantially central portion of the frame member 8 with the extending direction of the frame member 8 as an axis.

  Moreover, in this embodiment, it replaces with the air diffuser 1 shown in FIG.2 and FIG.3 etc. being provided with the pair of guide rails 10 at both ends, and in the air diffuser 1 in other embodiment, One guide rail 10A is provided in the center. The guide rail 10A has an H steel shape. The pairs of rollers 6d, 6e, 6e, 6d are accommodated in the channel of the guide rail 10A.

  In such an air diffuser, the roller 6d is guided while being in contact with the guide rail 10A, so that the roller 6d is prevented from shaking in the extending direction of the frame member 8 of the air diffuser unit 2A. By guiding 6e to the guide rail 10A, the air diffusion unit 2A can be smoothly raised and lowered.

  DESCRIPTION OF SYMBOLS 1 ... Air diffuser, 2, 2A ... Air diffuser unit, 3 ... Header pipe, 4 ... Air diffuser pipe, 6, 6a ... Roller (guided part) 10, 10A ... Guide rail (guide part), 10a ... Stopper, DESCRIPTION OF SYMBOLS 11 ... Elevating device (elevating means), 13 ... Mounting stand, 20 ... Processing tank, 21 ... Inner side wall.

Claims (3)

It is possible to move up and down into the treatment tank by the raising and lowering means, and an aeration device for aerating gas to the water to be treated in the treatment tank,
A header pipe extending along the inner wall of one of the treatment tanks and extending in a substantially horizontal direction and communicating with the gas supply source,
Communicating with the header tubes, diffusing pipe having a diffuser ports for discharging the gas from the header pipe,
A suspension unit connected to the elevating means for suspending the air diffuser so as to be able to be elevated;
An air diffusion unit having a guided portion that is spaced apart from the hanging portion in a direction opposite to the one inner wall;
Inclining so as to approach the inner wall as it goes upward from the bottom of the treatment tank, and in cooperation with the guided portion , comprising a guide portion that restricts the ascending and descending trajectory of the aeration unit ,
The hanging portion is provided on the inner wall side from the center of gravity of the air diffusion unit,
In the working position where the aeration unit performs aeration, the aeration tube is substantially horizontal,
When the aeration unit is raised with respect to the working position, the aeration tube is moved in a state where the end on the one inner wall side is inclined with respect to the substantially horizontal direction.
A diffuser characterized by that. Provided at the bottom of the treatment tank, comprising a gantry for installing the air diffusion unit at the work position,
The air diffuser according to claim 1, wherein when the header pipe is installed on the mount, the header pipe and the air diffuser are substantially horizontal. The guided portion is an air diffuser according to claim 1 or 2, characterized in that a roller.

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