JPH0596289A - Sewage purifying tank - Google Patents

Abstract

PURPOSE:To adjust distribution quantity by one operation and to keep the stable distribution quantity of sewage by attaching a partition wall wherein flooding weir pressers are provided to both ends of the notch part of a plate shaped body to a sewage distributor and vertically moving the float flooding weir on the inflow port side of the sewage distributor according to the increase and decrease of inflow sewage. CONSTITUTION:An almost U-shaped notch part is provided to the partition wall 2 of the respective outflow parts 10 of a box-shaped sewage distributor 1 having an inflow part 9 on the side of the inflow port 8 thereof and outflow parts 10 on the side of outflow ports 11 and flooding weir pressers 4 are provided to both end parts of the notch part on the side of the inflow part in opposed relationship. Support rods 12 are horizontally provided to the upper and lower parts of the float flooding weir 5 provided and fixed to the notch part having a V-shaped lower end so as to provide an interval and a screw rod 14 is vertically fixed to the support rods 12. A float 6 freely movable up and down is threaded with the screw rod 14 to be fixed by a nut 13 and the float flooding weir 5 provided with the float 6 is inserted in the space between the flooding weir pressers 4 provided to the partition wall 2 from above by positioning the float on the side of the inflow part 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage purification tank equipped with a sewage distribution device capable of maintaining a constant amount of distribution water.

[0002]

2. Description of the Related Art Conventionally, a sewage purification tank of a flow rate adjusting type having a raw water pump tank, a flow rate adjusting tank provided with a sewage distribution device above, a contact aeration tank, a sedimentation tank, a disinfection tank, a sludge concentrating tank, etc. Has been done. The flow rate adjusting tank temporarily stores the raw water from the raw water pump tank, and transfers the collected raw water to the contact aeration tank by a certain amount by a sewage distribution device provided above the flow adjusting tank. Sixth representative example of sewage distribution system
Referring to FIG. 7 and FIG. 7, 1 is a box-shaped sewage distribution device, and the inside of the device 1 is partitioned by a partition wall 2 provided with overflows 19 and 19 and a partition wall 3 orthogonal to the partition wall. The inflow part 9 having the inflow port 8 and the outflow parts 10, 10 having the outflow ports 11, 11 are formed. Reference numeral 7 is a shielding plate provided in front of the inflow port 8 of the inflow section 9. 8 shows a perspective view of the overflow weir 19. The overflow weir 19 is fixed to the partition wall 2 with a screw 20, and when changing the amount of distributed wastewater, the screw 20 can be loosened and moved up and down to adjust the flow rate.

[0003]

However, in the above-described conventional example, since the overflow weir is fixed by the screw, it is difficult to adjust the amount of distributed water, and the adjustment operation is repeated many times. There is a task that must be done. Further, as shown in the formula in FIG. 9 and FIG. 7, when the sewage water level increased, it was difficult to maintain the same amount of distributed water as before the increase.

An object of the present invention is to provide a sewage purification tank which can adjust the distribution amount by a single operation and can maintain a stable sewage distribution amount even when the amount of water changes. Is.

[0005]

The structure of the present invention for solving the above-mentioned problems is shown in FIGS. 1 to 4 corresponding to the embodiment.
Explaining with reference to the drawings, the present invention relates to a sewage purification tank in which a sewage distribution device having an inflow port and an outflow port and an overflow weir attached to a partition wall at an intermediate portion thereof is installed in an upper part of the tub, and a plate-shaped body is provided. With a notch on the sewage distribution device, a partition wall with overflow suppressors at both ends of the notch is attached to the sewage distribution device, and a float with a vertically adjustable float is provided on the inlet side of the sewage distribution device. It is characterized in that the overflow weir is inserted into the overflow weir, and the overflow overflow weir with floats can be moved up and down by increasing and decreasing the inflowing wastewater.

[0006]

According to the present invention, the above-mentioned means ensures a constant head because the attached overflow head with a float ensures a constant head even if the water level rises and falls due to an increase or decrease in sewage. It becomes possible to distribute the amount of sewage with the distribution ratio of.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 has an inflow port 8 on one side and outflow ports 11 and 11 on the other side, and the inside is divided by a partition wall 2 and a partition wall 3 into an inflow part 9 on the inflow port 8 side and an outflow divided into two on the outflow port 11 and 11 side. It is a box-like sewage distribution device provided with parts 10, 10.
The partition wall 2 of each of the outflow portions 10 and 10 of the device 1 is provided with a substantially U-shaped cutout portion, and the overflow restraint 4 having a substantially U-shaped cross section is provided on the inflow portion side at both ends of the cutout portion. 4 are provided so as to face each other. 5 is an overflow overflow weir having a V-shaped notch at the lower end in the longitudinal center of the plate-like body, and support rods 12, 12 are provided above and below the weir 5 with a gap. It is laterally fixed, and a threaded rod 14 is vertically fixed between the support rods 12, 12. Also, the thread cutting rod 14
A float which can be moved up and down by being rotated is screwed and fixed to the nut 13. And float 6
The float with overflow 5 provided with the float is inserted from above between the overflow dams 4 and 4 provided on the partition wall 2 with the float positioned on the inflow portion 9 side.

The wastewater pumped up by a pump (not shown) of the flow rate adjusting tank flows into the inflow section 9 from the inflow port 8 of the wastewater distribution device 1, and the wastewater is cut into a V-shaped cutoff of the overflow overflow weir 5 with a float. When it is between the bottom of the notch and the float 6, the sewage for that interval flows to the outflow portion 10 side. When the sewage reaches the water level of the float, the overflow overflow weir 5 with float floats together with the float, but the space between the bottom of the V-shaped notch of the overflow overflow dam 5 with float and the float 6 is constant. Therefore, the sewage flowing to the outflow portion 10 side is constant. That is, it is possible to always keep the amount of sewage distributed even when the amount of water changes. To adjust the float to adjust the amount of distributed water, it is sufficient to remove the overflow overflow weir 5 with the float from the overflow overflow retainer 4 of the partition wall 2, loosen the nut, and rotate the float 6 to shift the position. It is possible to easily determine an arbitrary amount of distributed water.

FIG. 5 shows another embodiment of the present invention, in which the inflow portion 9 of the sewage distribution apparatus 1 is provided with an overflow weir 16 having an outlet 18 of an appropriate height, and the inflow portion 9 has a rapid flow rate. Even if the amount of sewage increases and the amount of sewage exceeds the water amount range of the floating overflow weir 5, the increased amount of sewage is returned from the overflow spill 16 to the original flow control tank. Therefore, the distance between the overflow overflow weir 5 with a float and the surface of the sewage is always kept constant, and a certain amount of sewage is distributed.

[0010]

INDUSTRIAL APPLICABILITY The present invention is a sewage purification tank having an inflow port, an outflow port, and an overflow spillway attached to a partition wall at an intermediate portion between the sewage water purification device and the sewage purification tank. A partition wall, which is provided with a section and is provided with overflow suppressors at both ends of the notch, is attached to the sewage distribution device, and a float with adjustable vertical position is provided on the inlet side of the sewage distribution device. Since the weir is inserted into the overflow weir and the overflow weir with float is configured to be movable up and down by increasing or decreasing the inflowing wastewater, the amount of water distributed can be adjusted easily with one operation, and the amount of water can be adjusted easily. Even if it fluctuates, it is possible to maintain a stable amount of wastewater distributed.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial perspective view showing an embodiment of the present invention.

FIG. 4 is a front view showing an overflow weir with a float according to the present invention.

FIG. 5 is a plan view showing another embodiment of the present invention.

FIG. 6 is a plan view showing a conventional example.

7 is a sectional view taken along line BB of FIG.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is an explanatory diagram showing the relationship between the water head and the flow rate associated with the rise in the water level of the triangular weir.

[Explanation of symbols]

 1. Sewage distribution device 2. Partition wall 3. Partition wall 4. Overflow weir control 5. Overflow weir with float 6. Float 7. Shield plate 8. Inlet port 9. Inflow section 10. Outflow section 11. Outlet 12. Support bar 13. Nut 14. Threading rod 16. Overflow cough 18. Outlet 19. Overflow cough 20. Screw

Claims (4)

[Claims] 1. A sewage purification tank in which a sewage distribution device having an inflow port and an outflow port and having an overflow weir attached to a partition wall in the middle thereof is installed in the upper part of the sewage tank, and a notch is provided in a plate-like body. At the same time, a partition wall provided with overflow suppressors at both ends of the notch is attached to the sewage distribution device, and a spillway overflow with an adjustable float is installed on the inlet side of the sewage distribution device. A sewage purification tank characterized by being inserted into a weir and allowing an overflow spillway with a float to move up and down as the inflow sewage increases and decreases. 2. The sewage purification tank according to claim 1, wherein the float whose vertical position is adjustable is screwed into a threaded rod and is vertically movable by rotation. 3. The wastewater purification tank according to claim 1, wherein the thread cutting rod is supported by support rods provided above and below the overflow overflow with float. 4. The sewage purification tank according to claim 1, wherein the notch is formed to have a substantially U-shaped vertical cross section, a rectangular shape, and a square shape.