JPS647366Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a novel liquid flow regulator.

Conventionally, in sewage treatment tanks, etc., sewage led to a settling basin is temporarily stored in a flow rate adjustment tank, and this stored sewage is pumped up to a flow rate regulator installed on the upper wall of the adjustment tank. The water is transferred to the next aeration tank while adjusting the flow rate.

By the way, as shown in FIG. 3, in conventional flow rate regulators, an excess water return section 104 for returning excess water to a regulating tank is surrounded on three sides by a surrounding plate 105, and an opening at a lower end opening 106 of the surrounding plate 105 is used. An adjustment plate 107 for adjusting the area is provided so as to be slidable up and down.
Thus, the dirty water introduced into the water tank 101 from either one of the two water inlets 102 and 103 is passed through the partition plate 1.
Pass through the lower or upper side of 08, 109, 110, and
When overflowing the notch 111 and sending water from the water supply section 112 to the aeration tank, the area of the lower end opening 106 is changed using the adjustment plate 107 to increase the flow rate of the excess water return section 10.
By increasing or decreasing the amount of excess water returned from 4, the amount of water sent from the water feeding section 112 can be freely adjusted.

However, in such a flow rate regulator, the amount of excess water returned is manually adjusted by the adjustment plate 107, and even if the amount of water flowing in from the water inlet section 102 or 103 changes, it does not automatically respond to the change. A major drawback is that the amount of returned goods cannot be increased or decreased. That is, in this type of flow regulator, in order to avoid continuous operation of the water pump, each water inlet part 102, 1 is connected from the flow rate regulating tank.
A water pump is installed in each pipe by connecting one pipe to 03, and when one pump is operated, the other pump is stopped, and water is alternately entered from either one of the water inlet parts 102 and 103. However, even if the same model of water pump is used, there is a slight difference in performance, so there will be some difference between the amount of water entering from one water inlet section 102 and the amount of water entering from the other water inlet section 103. In addition, the water level in the flow rate adjustment tank changes depending on the time of day and season, and the head of the wastewater increases or decreases, resulting in considerable changes in the amount of water entering the tank. However, in the conventional flow rate regulator that employs the adjustment plate 107, it is not possible to automatically adjust the return amount of excess water according to changes in the amount of water input, and therefore the amount of water sent from the water supply section 112 is It changed in response to changes in the amount of water, making it impossible to make severe flow adjustments.

The present invention has been developed to solve the above-mentioned drawbacks, and an arm including an elongated rod is mounted inside a water tank equipped with a liquid input section, a liquid supply section, and an excess liquid return section. A float and a weight are attached to the elongated rod of the arm so as to be movable along the longitudinal direction thereof, and the float is attached to one side across the pivot part, and a cylindrical valve is connected to the other side. The present invention relates to a liquid flow rate regulator in which a cylindrical valve is slidably fitted into the upper end opening of an excess liquid return portion so as to be movable up and down.

Hereinafter, the present invention will be described in detail based on the drawings. Fig. 1 is a partially cutaway front view showing an embodiment of the liquid flow rate regulator of the present invention with its liquid tank cut away, and Fig. 2 shows the arm. It is an enlarged partial perspective view of the pivot portion of
Here, 4 is a box-shaped liquid tank placed on a support frame 8, and has a lid 41 divided into three parts that can be opened and closed. On one side wall of this liquid tank 4, a pair of inverted U-shaped tube-shaped liquid inlet parts 1 are arranged side by side, passing through the side wall (however, only the liquid inlet part in the front is shown in the figure). ,
At the end of the bottom wall on the opposite side, an L-tubular liquid feeding section 2 is provided to protrude downward. Part 3 is an excess liquid return section provided on the bottom wall of the liquid tank 4. It consists of an inner cylinder 32 which has a threaded groove corresponding to the threaded groove of the outer cylinder 31 on the outer surface and an adjustment handle 33 which can be raised and lowered at the upper part, and which is screwed into the outer cylinder 31 from above. The upper end opening of the return portion 3 (that is, the upper end opening of the inner cylinder 32) can be adjusted to a position corresponding to the set water supply amount by rotating the inner cylinder 32 with the adjustment handle 33.

Two partition plates 9 and 1 are provided on both sides of the excess liquid return section 3.
0 is suspended in the air, and the arm 5 is attached to the partition plate 9 near the center via a pair of supports 51, 51 so that it can move up and down and adjust its height as necessary. There is. That is, this partition plate 9 has
As shown in FIG. 2, two vertically long bolt insertion holes 92 are provided on each side of a vertically long opening 91 into which the arm 5 is loosely inserted, for a total of four bolt holes 92, and the arm 5 is pivotally supported so as to be able to move up and down. The pair of supports 51, 51 are mounted with bolts and nuts so that their height positions can be adjusted.

The arm 5 has an elongated rod 53 screwed into one end of a prism 52, and a perforated pin 55 rotatably mounted between a pair of protrusions 54, 54 at the other end. It is pivoted so that it can rotate freely.
A slider 56 is fitted onto the elongated rod 53 on one side of the pivot, and the float 6 is attached by screwing the upper mounting bolt of the float 6 into the lower surface of the slider 56. Further, a weight 13 is attached to the elongated rod 53 so as to be movable along its longitudinal direction. This slider 56 is attached to the fixing screw 5
It can be fixed by tightening 61, and can slide freely by loosening it. The float 6 can be fixed at any position with respect to the elongated rod 53 by loosening the fixing screw 561, but this may occur due to changes in the liquid level.
This means that the angle of change around the pivot point of the valve 7 can be varied, and this also means that the width of the vertical movement of the cylindrical valve 7 can be varied, which allows the position of the float 6 to be set in advance. For example, the amount of excess liquid returned from the return unit 3 can be easily adjusted in response to changes in the liquid level. The weight 13 is used to adjust the balance so that even when the position of the float 6 is changed in this way, a moment is always applied in the direction of arrow G as described later. The upper part of a threaded connecting rod 57 whose lower end is fixed to the supporting member 71 of the cylindrical valve 7 is inserted into the perforated pin 55 on the opposite side, and is fastened with double nuts 58 and 59 from above and below. By operating these double nuts 58 and 59, the height position of the cylindrical valve 7 can be freely adjusted.

Although the material and shape of the cylindrical valve 7 are not particularly limited, in this embodiment it is made of polyethylene, and the upper opening edge has a small thickness and is rounded to prevent liquid from flowing inside. It has become easier to overflow. This cylindrical valve 7 is fixed to a support member 71 and slidably fitted into the upper end opening of the inner cylinder 32 of the excess liquid return section 3 so as to be vertically movable.

As described above, it is necessary to constantly apply a rotational moment in the direction of arrow G to the arm 5 to which the float 6 and the cylindrical valve 7 are attached so that it moves up and down via the float 6 in response to changes in the liquid level. However, this can be easily done by appropriately adjusting the position of the slider 56 and the weight 13 with respect to the elongated rod 53.

In Fig. 1, numeral 11 is a V-notch with a flow rate scale marked on it, and the U-shaped partition plate 1 is similar to the conventional regulator.
2 is attached so that its vertical position can be adjusted freely.

The flow rate regulator of the present invention configured as described above adjusts the amount of liquid returned from the excess liquid return section 3 beyond the upper end of the cylindrical valve 7, so that the liquid level reaches the desired flow rate scale of the V notch 11. The amount of liquid sent from the liquid sending part 2 beyond the V-notch 11 can be adjusted to the desired amount. Specifically, with the float 6 floating on the liquid surface, The height of the support 51 is adjusted so that the arm 5 is almost horizontal, and the height of the cylindrical valve 7 is adjusted by operating the double nuts 58 and 59 of the connecting rod 57.
6 and the weight 13 are moved and fixed along the longitudinal direction of the elongated rod 53 to adjust the width of the vertical movement of the cylindrical valve 7 as appropriate, and the amount of excess liquid obtained by subtracting the desired amount of liquid sent from the amount of liquid injected is removed from the tube. It is sufficient that the liquid is returned from the return section 3 beyond the upper end of the shaped valve 7. In this case, the amount of excess liquid returned increases as the water pressure applied to the upper end of the cylindrical valve 7 increases, so when increasing the amount of excess liquid returned to lower the liquid level and reduce the amount of liquid sent, it is necessary to The height of the cylindrical valve 7 is adjusted so that the depth to the upper end of the cylindrical valve 7 is increased, and the slider 56 is
The width of the vertical movement of the cylindrical valve 7 may be adjusted by moving the weight 13 and the weight 13. Conversely, if the amount of excess liquid returned is decreased to raise the liquid level and increase the amount of liquid sent, The height of the cylindrical valve 7 may be adjusted so that the depth from the liquid level to the upper end of the cylindrical valve 7 is reduced, and the width of the vertical movement of the cylindrical valve 7 may be reduced, contrary to the above. In particular, the width of the vertical movement of the cylindrical valve 7 is related to the degree of change in the vertical movement of the cylindrical valve 7, so the amount of excess liquid returned can be increased or decreased according to changes in the liquid level to maintain an appropriate liquid level. extremely important.

Once the desired flow rate is adjusted as described above, arm 5,
The float 6 and the cylindrical valve 7 remain stationary,
A fixed amount of liquid is continuously sent from the liquid sending section 2.

On the other hand, when the amount of liquid entering increases midway through, the liquid level rises at the beginning, but as the liquid level rises, the float 6 rises, and the arm 5 rotates in the direction of arrow F to push down the cylindrical valve 7. Therefore, the amount of excess liquid returned increases, and as a result, the liquid level quickly drops to almost its original level, so there is almost no change in the amount of liquid sent. Conversely, when the amount of liquid entering decreases, the liquid level initially drops, but as the liquid level falls, the arm 5 rotates in the direction of arrow G and pulls up the cylindrical valve 7, so the amount of excess liquid returned decreases. Otherwise, it becomes zero, and as a result, the liquid level quickly rises to almost its original level, so there is also almost no change in the amount of liquid fed.

As mentioned above, even if the amount of liquid input increases or decreases, the flow rate regulator of the present invention sensitively catches changes in the liquid level and automatically increases or decreases the amount of excess liquid returned. It can be maintained constant, and is useful because it can satisfactorily overcome the drawbacks of conventional flow regulators.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing an embodiment of the liquid flow rate regulator of the present invention with its liquid tank cut away, Fig. 2 is an enlarged partial perspective view of the pivot portion of the arm, and Fig. 3 is a conventional one. FIG. 2 is a perspective view showing the liquid flow rate regulator with its liquid tank cut away. Explanation of main symbols in the drawings, 1...Liquid input part, 2...
Liquid sending part, 3... Excess water returning part, 4... Liquid tank, 5...
... Arm, 6 ... Float, 7 ... Cylindrical valve, 11 ...
V notsuchi.

Claims (1)

[Scope of utility model registration request] An arm 5 including an elongated rod 53 is installed inside a liquid tank 4 that includes a liquid input section 1, a liquid supply section 2, and an excess liquid return section 3.
The elongated rod 5 of the arm 5 is pivotably supported to be vertically movable.
A float 6 and a weight 13 are attached to the return part 3 so as to be movable along the longitudinal direction, and a cylindrical valve 7 is connected to the other part across the pivot part, and the cylindrical valve 7 is attached to the return part 3
A liquid flow rate regulator that is slidably fitted into the upper end opening of the device so as to be able to move up and down.