CN103590484B - Automatic hydraulic control leaping weir initial rainwater catch basin and flow closure method - Google Patents

Abstract

The invention discloses an initial stage rainwater interception well and a interception method of a jumping weir with hydraulic automatic control, which is suitable for the transformation of diversion system rainwater pipelines. The interception well includes a well body, an inlet pipe, an interception pipe, an automatic hydraulic control weir, Four limit blocks, buoys, fan-shaped baffle side plates, small discharge holes, partition walls, overflow pipes, manholes, steps, weir plate shafts, etc.; the interception method is implemented by the interception well. The flow of the inlet pipe increases with the increase of rainfall. When it increases to a certain extent, the outer curve of the jet flow crosses the automatic control weir. Due to the buoyancy of the buoy, the weir plate of the automatic control weir opens, and the water flow in the inlet pipe is completely discarded. , until the water volume in the inlet pipe is almost zero, due to the discharge effect of the discharge hole, the buoy is lowered, and the weir plate is reset, so that the later clean rainwater enters the receiving water body. The interception well is completely controlled by hydraulic power, without other control equipment, stable operation, simple maintenance and convenient management.

Description

A jumping weir initial rainwater interception well and interception method with automatic hydraulic control

technical field

The invention relates to rainwater drainage treatment technology, in particular to an interception technology capable of intercepting initial rainwater and completely abandoning later stage rainwater.

Background technique

Due to the development of human civilization, people's attention to the environment has gradually increased, and the urban drainage system has also undergone profound changes. The combined pipeline system is developing towards the intercepting combined system and the diversion system. The rainwater of the diversion system is completely discharged to the nearest water body. However, due to the production and life of human beings, a large amount of pollutants are discharged into the environment and washed into the receiving water body by rainwater, causing serious environmental pollution. If all the rainwater is collected and sent to the sewage plant for treatment, it will affect the stable operation of the sewage plant. Cause huge impact, also can cause the serious waste of sewage plant scale drought period. The initial rainwater washes the atmosphere and washes away the pollutants on the underlying surface, so that the initial rainwater runoff contains a large amount of pollutants such as organic matter, pathogens, grease, and suspended solids. The most serious part, and the rainwater in the later period is relatively clean, and it will not cause serious pollution when discharged into the water body. Therefore, it is a better method to intercept the initial rainwater runoff and enter the sewage plant for treatment and discharge. Due to the function of the weir, the traditional weir type or slot weir interception well will hinder the smooth discharge of water in the rainwater pipe. The slot type, slot weir type, weir type and skip weir type interception wells all have the problem that the clean rainwater in the later stage cannot be discarded, etc. Problems (the first three types still have the problem of unstable interception flow. When there is a large amount of water, the actual interception flow will increase significantly). In addition, the traditional electric control of weir plate lifting to realize interception and abandonment has disadvantages such as unstable operation, complex structure, and difficult maintenance.

For example, my country Patent No. 200910191015.X once disclosed an initial rainwater abandonment device. Weir, diversion diversion chamber, delay automatic emptying mechanism, etc. Although this device can realize initial rainwater abandonment, the structure of the device is complicated and the cost is high. At the same time, due to the existence of the delay control room, some early rainwater will remain in it and then be mixed with the later cleaning rainwater to be discharged. As a result, part of the clean rainwater will always enter the initial rainwater discharge pipe along the drain pipe, so the separation effect is poor and the separation is not complete.

Contents of the invention

Aiming at the deficiencies of the prior art above, the technical problem to be solved by the present invention is: how to provide a jump weir initial rainwater interception well and interception method with simple structure, easy implementation, low cost and good hydraulic automatic control of separation effect.

In order to solve the problems of the technologies described above, the following technical solutions are adopted in the present invention:

An initial rainwater interception well for jumping weirs with hydraulic automatic control, comprising a well body, an inlet pipe and an outlet pipe located on the side wall of the well body, and is characterized in that the lower part of the well body is also provided with an inlet pipe and an outlet pipe. The automatic control weir separated by the flow pipe, the edge of the automatic control weir is vertically arranged in front of the inlet pipe, the lower part of the automatic control weir is installed on the well wall and the same side as the inlet pipe, and the middle of the upper part of the automatic control weir is directly opposite to the There is a notch at the position of the inlet pipe, and a weir plate matching the notch is installed on the side away from the inlet pipe. The lower end of the weir plate is rotatably connected to the lower surface of the notch through a rotating shaft. A downwardly bent connecting rod is fixedly connected to a buoy, which is located in a water accumulation space surrounded by an automatic control weir and a partition wall that is lower than the height of the automatic control weir and has a horizontal connection at the bottom to the outflow The discharge hole in the cavity space of the well body in the direction of the pipe; the outflow tube is located at the bottom of the cavity space in the well body.

The interception well of this scheme can be used for initial rainwater interception so that it flows out from the interception pipe, and later clean rainwater flows out through the outlet pipe, realizing the automatic control and separation of rainwater. At the same time, its structure is only composed of simple structures such as overflow weir, weir plate, partition wall and buoy, and has the characteristics of simple structure, easy implementation and low cost.

As an optimization, on both sides of the upper gap of the automatic control weir, there is also a raised flow-connection limit block on the position close to the direction of the inlet pipe, and the flow-connection limit block is used to support the limit weir plate to keep the upper end The water receiving state is inclined in the direction of the inlet pipe; on the two side walls of the upper gap of the automatic control weir near the direction of the outlet pipe, a raised reset limit block is respectively provided, and the reset limit block is used for the reset time limit of the weir plate The bit remains closed vertically upwards.

After such optimization, a fulcrum is provided for the opening and reset of the weir plate, which is beneficial to the accurate opening and closing of the weir plate, and avoids damage to the weir plate due to the impact of water flow.

As an optimization, both sides of the weir plate are fixedly connected with a fan-shaped baffle side plate with an arc-shaped upper part along the direction away from the inlet pipe. This prevents hydraulic flow from the weir plate back into the interception slot.

As an optimization, the barrel of the buoy is placed on the side of the weir plate to avoid the impact damage of the water flow.

The present invention also discloses a hydraulic automatic control jump weir initial rainwater interception method. After the pipe enters the cavity of the well body, due to the small amount of water, it directly falls into the cavity of the well body between the inlet pipe and the automatic control weir, and flows to the sewage treatment plant through the interceptor pipe for treatment. Large, the outer curve of the jet crosses the top of the automatic control weir plate and enters the water accumulation space between the automatic control weir and the partition wall. In the open state, after the weir plate is opened, it leans against the flow limiting block to keep the inclination angle stable so that the later rainwater will pass over the weir plate, so that the later clean rainwater will be discharged through the outlet pipe. When the rain stops or decreases to light rain that is not suitable for direct discharge, and the water volume of the inlet pipe decreases to less than the flow rate of the discharge hole, the accumulated water in the water storage space will be discharged through the discharge hole below the partition wall, so that The rise of the buoy drives the weir plate to reset to complete a working cycle.

In the present invention, the flow rate of the water inlet pipe of the intercepting well increases with the increase of rainfall. When it increases to a certain extent, the outer curve of the jet flow crosses the automatic control weir, and the automatic control weir is opened due to the buoyancy of the buoy. The water flow in the inlet pipe is completely discarded until the water volume in the inlet pipe is almost zero. Due to the discharge effect of the discharge hole, the buoy is lowered and the weir plate is reset, so that clean rainwater enters the receiving water body in the later stage. The interception well adopts hydraulic control completely, without other control equipment, stable operation, simple maintenance and convenient management.

In the present invention, after the water flow of the inlet pipe passes over the weir plate, water accumulates in the area between the weir plate and the partition wall, and the weir plate is rotated and opened toward the direction of the inlet pipe under the buoyancy of the buoy, and the water flow is completely discarded. When the weir plate is fully open, the inner curve of the jet flow of the inlet pipe will also exceed the weir crest, so it can be completely unblocked in the later stage. The invention fully realizes hydraulic control, has simple device and convenient management. What the weir plate provided in the present invention realizes to be opened by rotation, the rotation is flexible. In the present invention, a partition wall is arranged in the well body of the intercepting well, and small discharge holes are arranged in the middle of the wall near the bottom, which creates conditions for the function of the buoy. In the present invention, four limit blocks are arranged on both sides of the weir plate to provide fulcrums for the opening and reset of the weir plate, which is beneficial to the accurate opening and closing of the weir plate, and avoids damage to the weir plate by the impact of water flow. In the present invention, the weir plate is symmetrical about the longitudinal section of the inlet pipe, and the width of both sides is preferably 5-10 cm beyond the inner diameter of the pipe. Side plates are installed on both sides to prevent the water flow from returning from the weir plate to the intercepting groove.

In the present invention, the rotation of the weir plate achieves two functions, one is to reduce the distance between the weir and the inlet pipe, and the other is to reduce the height of the weir mouth. Both functions are beneficial for the water flow to jump over the weir plate and realize the abandonment of the flow .

The structure of the intercepting well adopted by the invention is simple, and the process of realizing the function is simple, which overcomes the problem that the traditional vertical lifting weir plate is prone to failure

In the present invention, the discharge small hole is preferably arranged in the middle of the partition wall near the bottom, and its diameter is calculated by taking the height of the partition wall as the acting water head and the minimum control flow rate in the later stage. At the same time, due to the impact of the water flow, the small hole is difficult to be blocked.

In summary, the present invention can intercept the more seriously polluted initial rainwater in the rainwater runoff and enter the sewage plant, while the later relatively clean rainwater can be completely discarded, effectively reducing the construction scale of the sewage plant and environmental protection, and the operation is incompetent Low consumption and easy maintenance. At the same time, it has the advantages of simple structure of the interception well, easy implementation, low cost and good separation effect.

Description of drawings

Fig. 1 is a schematic plan view of an interception well of the present invention.

Fig. 2 is a schematic diagram of the B-B section structure in Fig. 1 .

Fig. 3 is a schematic diagram of the C-C section structure in Fig. 1 .

Fig. 4 is a schematic diagram of the section A-A in Fig. 1 .

Fig. 5 is the small water volume situation of A-A sectional structural schematic diagram in Fig. 1.

Fig. 6 is the water volume situation in the early stage of the schematic diagram of the A-A section structure in Fig. 1 .

Fig. 7 is a schematic diagram of the A-A cross-section structure in Fig. 1, the large amount of water in the early stage, that is, the flow rate to be controlled, and the situation before the action of the buoy.

Fig. 8 is a large amount of water in the schematic diagram of the A-A section structure in Fig. 1, and the situation after the action of the buoy.

Fig. 9 is a later stage smaller flow rate of the schematic diagram of the A-A section structure in Fig. 1 .

Detailed ways

The structure of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

During specific implementation, as shown in Fig. 1-Fig. 9, a jumping weir initial stage rainwater interception well controlled by hydraulic power automatically includes a well body, an inlet pipe 1 and an outflow pipe 9 (i.e. overflow pipe) positioned on the side wall of the well body. pipe), the lower part of the well body is also provided with an automatic control weir that separates the inlet pipe 1 and the outlet pipe 9, the automatic control weir is vertically arranged on the front and lower side of the inlet pipe 1, and the bottom of the automatic control weir is on the well wall An intercepting pipe 2 is arranged on the same side as the inlet pipe, and a gap is provided in the middle of the upper part of the automatic control weir facing the inlet pipe, and a weir plate 3 matching the gap is installed on the side of the gap away from the inlet pipe, and the weir plate 3 The lower end is rotatably connected to the lower surface of the gap through the rotating shaft 13, and the side of the weir plate 3 away from the inlet pipe 1 is also fixedly connected with a buoy 5 through a downwardly bent connecting rod. In the water accumulation space surrounded by the partition wall 8, the partition wall 8 is lower than the height of the automatic control weir and the bottom has a discharge hole 7 that is horizontally connected to the inner cavity space of the well in the direction of the outlet pipe 9; the outlet pipe 9 It is located at the bottom of the inner cavity of the well. On the two side walls of the gap in the upper part of the automatic control weir, a raised flow limiting block 4 is also provided on the position close to the direction of the inlet pipe, and the flow limiting block 4 is used to support the limiting weir plate 3 to keep the upper end facing The water receiving state is inclined in the direction of the inlet pipe; the two side walls of the upper gap of the automatic control weir are also provided with a raised reset limit block 12 at the position close to the direction of the outlet pipe, and the reset limit block 12 is used for the weir plate 3. When resetting, the limit position remains in a vertically upward closed state. Both sides of the weir plate are fixedly connected with a fan-shaped baffle side plate 6 with an arc-shaped upper part along the direction away from the inlet pipe. Number 10 is a manhole among the figure, and number 11 is a step ladder, to make things convenient for personnel to go up and down the well.

A hydraulic automatic control jumping weir initial rainwater interception method adopts the above-mentioned hydraulic automatic control jumping weir initial rainwater interception well, and makes the initial rainwater that needs to be intercepted enter the inner cavity of the well from the inlet pipe. The small particles directly fall into the well body cavity between the inlet pipe and the automatic control weir, and flow to the sewage treatment plant through the interceptor pipe for treatment. As the flow rate of the inlet pipe increases, the outer curve of the jet crosses the automatic control weir plate The top enters into the water accumulation space between the automatic control weir and the partition wall. The water level in the water accumulation space rises and drives the buoy to float up, and then drives the upper end of the weir plate to rotate towards the direction of the inflow pipe to open. After the weir plate is opened, it is connected to the flow The limit block keeps the inclination angle stable so that the rainwater in the later stage can pass over the weir plate, so that the clean rainwater in the later stage can be discharged through the outlet pipe.

Specifically, after a rainfall event occurs, the rainwater on the underlying surface is collected into the rainwater pipe network system of the diversion system, and is transported to the interception well through the pipeline. According to the change of the water volume, when the water volume is large, the weir plate automatically opens and discards the flow, and the rainfall After the end and the runoff in the pipe disappears, the weir plate is reset and enters the standby state for the next rainfall event.

As shown in Figure 5 and Figure 6, the flow rate of the inlet pipe is less than the flow rate that needs to be intercepted, and the outer curve of the jet flow is within the interception range of the weir plate, the weir plate will be in a vertical state, and the water will completely enter the interception pipe and be transported to the downstream treatment plant or adjustment in the reservoir.

As shown in Figure 7, the flow rate of the inlet pipe is relatively large, and the part of the jet curve crosses the top of the weir plate and falls to the area between the weir plate and the partition wall. Water accumulates in the middle area, and the water level rises, pushing the buoy to act on the weir plate, and the weir plate is opened (as shown in Figure 8), and all the flow of the inlet pipe passes over the weir plate and is discarded. Since the opened weir plate can make the inner curve of the jet flow over the weir plate, so as long as there is flow in the later stage (as shown in Figure 9), the buoy will have an effect, and the weir plate will be in the open state, and the result is that all the clean rainwater in the later stage overflow.

After the runoff generated by a rainfall stops, the discharge hole will slowly drain the water in the middle part of the weir plate and the partition wall, the buoy will descend, and the weir plate will return to the state shown in Figure 4 along with the buoy reset, and a working cycle is completed. Enter the standby state for the next cycle.

Claims (4)

1. what a hydraulic automatism controlled jumps over weir primary rainwater closure well, comprise well body, be positioned at influent stream pipe and the outflow tube of well body sidewall, it is characterized in that, described well body bottom is also provided with automatic control weir influent stream pipe and outflow tube separated, automatic control weir is along being vertically installed in influent stream pipe front lower place, the borehole wall of bottom, automatic control weir is provided with intercepting sewer with influent stream pipe homonymy, just breach is provided with to influent stream pipe position in the middle of top, described automatic control weir, breach is provided with the weir plate with breach coupling away from influent stream pipe side, weir plate lower end is rotatably connected to breach soffit by rotating shaft, side weir plate deviating from influent stream pipe is also fixedly connected with a floating drum by the connecting rod of a bending downwards, floating drum is positioned at one by the ponding space automatically controlling weir and compartment wall and surround, described compartment wall is lower than automatic control height of weir degree and bottom has the discharge orifice that level is communicated to the well intracoelomic cavity space in outflow tube direction, described outflow tube is positioned at well intracoelomic cavity space bottom position, weir plate is symmetrical about influent stream pipe vertical section, and both sides width is for exceeding internal diameter of the pipeline 5-10 centimetre.

2. what hydraulic automatism as claimed in claim 1 controlled jumps over weir primary rainwater closure well, it is characterized in that, upper notch two side, described automatic control weir is also respectively provided with one near position, influent stream pipe direction and protruding connects stream limited block, connect stream limited block and remain for support limit weir plate the water receiving state that upper end tilts to influent stream pipe direction; Upper notch two side, described automatic control weir is also respectively provided with a protruding reset limited block near position, outflow tube direction, and reset limited block is used for the spacing closure state remained straight up when weir plate resets.

3. what hydraulic automatism as claimed in claim 1 or 2 controlled jumps over weir primary rainwater closure well, it is characterized in that, weir plate both sides are respectively fixedly connected with along the direction away from influent stream pipe the fan-shaped baffle side plate that a top is arc-shaped side.

4. what a hydraulic automatism controlled jumps over weir primary rainwater closure method, it is characterized in that, what have employed hydraulic automatism as claimed in claim 3 control jumps over weir primary rainwater closure well, and after making the early-stage rainwater needing to dam enter well intracoelomic cavity from influent stream pipe, directly drop into influent stream pipe because the water yield is less and automatically to control in the well body cavity between weir and flow to Wastewater Treatment Plant through intercepting sewer to process, along with the flow of influent stream pipe increases, jet external curve is crossed control weir plate top automatically and is entered in the ponding space automatically between control weir and compartment wall, in ponding space, water level goes up and drives floating drum to float, and then drive weir plate upper end to rotate to be open mode toward influent stream pipe direction, weir plate is abutted against stream limited block and keeps that angle of inclination is stable makes later stage rainwater cross weir plate after opening, the rainwater making the later stage clean is all arranged outward by outflow tube.