A flow regulating and controlling device suitable for the front end of an underground sewage treatment plant

Abstract

The present invention discloses a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant, comprising a front flow control channel, a flow regulating channel, a rear flow control channel and a transcending channel; the front flow control channel is provided with a flow control electric gate, a transcending channel front electric gate and a water inlet pipe; the flow regulating channel is provided with an adjusting weir gate, and the front flow control channel and the flow regulating channel are controlled to be connected through the flow control electric gate; the rear flow control channel is provided with a transcending channel rear electric gate and a water outlet pipe, and the flow regulating channel adjusts the operating water level in the flow regulating channel by adjusting the weir gate; the transcending channel is provided with an overflow electric gate and an overflow pipe, and the front flow control channel and the transcending channel are controlled to be connected through the transcending channel front electric gate, and the rear flow control channel and the transcending channel are controlled to be connected through the transcending channel rear electric gate. The present invention effectively realizes the flow regulation and control of sewage, avoids the risk of flooding of the underground sewage treatment plant, and ensures the safe operation of the underground sewage treatment plant.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant. Background Art

[0002] The development of sewage treatment plants in my country can be simply divided into three stages: from scratch to construction, covering and deodorizing, and starting to "go underground".

[0003] Phase 1: The construction of sewage treatment plants. From 1920 to 2000, my country's sewage treatment plants were built from scratch, and developed from primary treatment to secondary treatment. The sites were generally located in suburbs far away from cities, and the odor problem was not paid attention to for a long time.

[0004] Phase 2: Covering and deodorizing sewage treatment plants. From 2000 to 2010, the sewage treatment industry developed rapidly. Urbanization has turned sewage treatment plants that used to be located in the suburbs into urban centers. In the construction, expansion or renovation of sewage treatment plants, covering and deodorizing the pools has become a basic requirement. The plant environment has improved to a certain extent, but the odor problem has not been fundamentally solved, and the ground landscape environment has not received enough attention. The phenomenon of nuisance to residents caused by the odor problem of sewage treatment plants has become more and more frequent.

[0005] Phase 3: Sewage treatment plants begin to "go underground". After 2010, with the completion and commissioning of Guangzhou Jingxi Underground Water Treatment Plant, the first fully underground MBR sewage treatment plant in my country, underground sewage treatment plants began to develop rapidly in various places. These underground sewage treatment plants overturned the traditional image of sewage treatment plants that people avoided in the past, which were full of odor, noise and sewage pools. Sewage treatment plants began to integrate into the city center, and their ground garden-style environment completely solved the problem of the incompatibility of traditional sewage treatment plants with the urban living environment.

[0006] Under the background of rapid urbanization, increasingly scarce urban land, and people's increasing demands for the environment, underground sewage treatment plants have shown more and more significant advantages in land conservation and environmental friendliness. The main production structures of underground sewage treatment plants are located in underground space, and the treatment structures and auxiliary buildings are set up in whole or in part in the space below the ground. The ground of the plant area is used as buildings (generally plant complex buildings, office buildings), parking lots, sports fields, roads, parks or green landscapes and other purposes. For the pool body, the design is usually called "double-layer cover" form, that is, the pool body cover meets the deodorization requirements, and the pool surface maintenance space cover is isolated from the underground to create a good ground environment. Daily on-site operation and maintenance are mainly carried out in the underground space. Operators can often carry out daily inspections, operations and maintenance and other production activities in the underground space. Its typical vertical section is generally divided into three layers: underground negative second floor (sewage treatment structure pool body layer), underground negative first floor (treatment pool surface layer, production auxiliary building layer, production operation management space layer), ground layer (ground other use layer).

[0007] Because the underground sewage treatment plant is buried deep underground and the operating layer is 8m-10m below the ground, it is at great risk of flooding. The main sources of risk are: 1. Floods break out and the water level is higher than the operating layer; 2. A large amount of rainwater enters the sewage pipe network during the rainy season, causing the sewage volume to double, and the underground sewage treatment plant cannot absorb the sewage in time; 3. Equipment failure in the plant leads to shutdown and failure to prevent sewage from entering the sewage treatment plant in time. At present, in order to prevent the underground sewage treatment plant from being flooded, gates are often installed at the sewage inlet of the underground sewage treatment plant to adjust and control the flow of sewage.

[0008] Existing technology 1: Flow regulation and control technology of ordinary wall-mounted electric gates: An electric gate is installed on the wall at the entrance of the underground sewage treatment plant, and the electric gate is opened and closed by relying on the liquid level control feedback signal to achieve flow regulation and control of the water entering the sewage treatment plant.

[0009] The main disadvantages of prior art 1:

[0010] 1. The time interval from receiving the signal to opening and closing of the ordinary wall-mounted electric gate is relatively long, about 1-3 minutes. The timeliness of sewage flow regulation and control is poor, and the risk of sewage overflow is high.

[0011] 2. Ordinary wall-mounted electric gates are in reverse force mode, with a high failure rate in long-term operation. There is only one gate for protection, and the risk factor is high.

[0012] 3. Ordinary wall-mounted electric gates have poor sewage flow regulation effects and cannot effectively adjust the operating water level.

[0013] Existing technology 2: Flow control technology of wall-mounted quick-closing gates: Electric or pneumatic quick-closing gates are installed on the wall at the entrance of the underground sewage treatment plant, and the opening and closing of the quick-closing gates are controlled by liquid level feedback to achieve flow control of sewage. The quick-closing gate has a fast reaction time from receiving the signal to executing the opening and closing, about 10-30 seconds, which can effectively avoid the risk of sewage overflow.

[0014] The main disadvantages of prior art 2:

[0015] 1. The wall-attached quick-closing gate is in a reverse force mode, and the failure rate is high in long-term operation.

[0016] 2. The wall-attached quick-closing gate has a poor effect on regulating the flow of sewage and cannot effectively adjust the operating water level.

[0017] 3. There is only one quick-closing gate for protection, and the risk factor is relatively high. Summary of the invention

[0018] The present invention provides a flow regulating and control device suitable for the front end of an underground sewage treatment plant to solve the following problems: 1. Solve the problem that ordinary gates have poor flow regulating effect. Ordinary gates can only rely on the up and down opening and closing of the gates to regulate the flow, and cannot effectively adjust the operating water level; 2. Solve the overflow risk problem of only one protective gate. With only one gate, once the equipment fails, the sewage treatment plant will be overflowed; 3. Solve the problem that the wall-attached gate is subjected to reverse force and is prone to failure; 4. Solve the problem that ordinary gates have poor timeliness in flow regulation and control.

[0019] In order to achieve the above object, the present invention adopts the following technical solutions:

[0020] A flow regulating and controlling device suitable for the front end of an underground sewage treatment plant, comprising:

[0021] The front flow control channel is equipped with a flow control electric gate, an electric gate in front of the overtaking channel and a water inlet pipe;

[0022] A flow regulating channel is provided with a regulating weir gate, and the front flow control channel and the flow regulating channel are controlled to be connected by a flow control electric gate;

[0023] A rear flow control channel is provided with an electric gate and a water outlet pipe after the overtaking channel, the regulating weir gate is located between the flow control channel and the rear flow control channel, and the flow control channel adjusts the operating water level in the flow control channel by adjusting the weir gate;

[0024] The overtaking channel is provided with an overflow electric gate and an overflow pipe. Whether the front control flow channel is connected to the overtaking channel is controlled by the front electric gate of the overtaking channel, and whether the rear control flow channel is connected to the overtaking channel is controlled by the rear electric gate of the overtaking channel.

[0025] As a further description of the above technical solution: the flow regulating channel is provided with a flow regulating channel liquid level meter.

[0026] As a further description of the above technical solution: the outlet pipe is connected to an underground sewage treatment plant.

[0027] As a further description of the above technical solution: a quick-closing gate of an underground sewage plant is provided between the outlet pipe and the underground sewage plant.

[0028] As a further description of the above technical solution: the rear control flow channel is provided with a control flow channel level gauge and a pneumatic quick-closing gate.

[0029] As a further description of the above technical solution: the pneumatic quick-closing gate is arranged at the outlet pipe to control whether the sewage in the rear control flow channel enters the outlet pipe.

[0030] As a further description of the above technical solution: the flow regulating and controlling device also includes an operating platform cavity, and an inspection port is provided at the upper end of the operating platform cavity.

[0031] As a further description of the above technical solution: the overpass channel is provided with an inspection ladder extending into the interior at the inspection opening.

[0032] The present invention has the following beneficial effects:

[0033] Through the scientific combination of adjusting weir gates, ordinary gates and quick-closing gates, the flow regulation and control of sewage can be effectively achieved. The double insurance combination of quick-closing gates can avoid the risk of flooding of underground sewage treatment plants and ensure the safe operation of underground sewage treatment plants. The adjusting weir gates can adjust the operating water level of the pretreatment section of the underground sewage treatment plant to ensure the smooth operation of the underground sewage treatment plant; in addition, when the underground sewage treatment plant needs uniform water distribution in the short and long term, the flow regulation channel of the present invention is equipped with two sets of electric adjusting weir gates, which can also achieve uniform water distribution. The combination of ordinary gates and quick-closing gates can achieve overflow beyond the flow regulation channel and excess sewage, and also ensure the safe operation of the flow regulation and control well itself. In summary, the beneficial effects of the present invention are significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant provided by the present invention;

[0035] Figure 2 A cross-sectional view 1-1 of a low liquid level operation of a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant provided by the present invention;

[0036] Figure 3 A cross-sectional view 1-1 of a high liquid level operation of a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant provided by the present invention;

[0037] Figure 4 A cross-sectional view 1-1 of a flow regulating and controlling device for a front end of an underground sewage treatment plant provided by the present invention, showing the operation of a flow regulating channel beyond the flow regulating channel;

[0038] Figure 5 A cross-sectional view 1-1 of a double-safety quick-closing operation of a flow regulating and controlling device suitable for the front end of an underground sewage treatment plant provided by the present invention. Description of the drawings:

[0040] 1-water inlet pipe, 2-flow control electric gate, 3-flow regulating channel liquid level gauge, 4-adjusting weir gate, 5-flow control channel liquid level gauge, 6-pneumatic quick-closing gate, 7-water outlet pipe, 8-quick-closing gate of underground sewage treatment plant, 9-electric gate before overtaking channel, 10-electric gate after overtaking channel, 11-overflow electric gate, 12-overflow pipe, 13-flow regulating and control device, 14-maintenance ladder, 15-maintenance port, 16-underground sewage treatment plant. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Reference Figure 1-5 The present invention provides an embodiment: a flow regulating and controlling device 13 suitable for the front end of an underground sewage treatment plant, comprising a front flow control channel, a flow regulating channel, a rear flow control channel and a transcending channel.

[0043] The front flow control channel is provided with a flow control electric gate 2 and a front electric gate 9 for the overtaking channel, and a water inlet pipe 1 is provided at the front end thereof, and the water inlet pipe 1 introduces sewage.

[0044] The flow regulating channel is provided with an adjusting weir gate 4 and a flow regulating channel liquid level meter 3, and the front flow control channel and the flow regulating channel are connected or not through a flow control electric gate 2 to control whether they are connected.

[0045] The rear control flow channel is provided with a control flow channel level gauge 5, a pneumatic quick-closing gate 6 and an electric gate 10 behind the overtaking channel, and a water outlet pipe 7 is provided at the rear end thereof, which is connected to the underground sewage treatment plant 16, and the pneumatic quick-closing gate 6 is arranged at the water outlet pipe 7 to control whether the sewage in the rear control flow channel enters the water outlet pipe 7; the regulating weir gate 4 is located between the flow regulating channel and the rear control flow channel, and the flow regulating channel adjusts the operating water level in the flow regulating channel by adjusting the up and down movement of the weir gate 4, thereby affecting the operating water level inside the rear control flow channel and the underground sewage treatment plant 16.

[0046] The overtaking channel is provided with an overflow electric gate 11 and an overflow pipe 12. Whether the front control flow channel and the overtaking channel are connected is controlled by the overtaking channel front electric gate 9, and whether the rear control flow channel and the overtaking channel are connected is controlled by the overtaking channel rear electric gate 10.

[0047] A quick-closing gate 8 for the underground sewage treatment plant is provided between the outlet pipe and the underground sewage treatment plant. The pneumatic quick-closing gate 6 and the quick-closing gate 8 for the underground sewage treatment plant control the connection between the rear control channel and the underground sewage treatment plant, thus playing a double insurance role. During normal operation, both quick-closing gates are in the open state. Only when the sewage volume surges and exceeds the warning water level, the pneumatic quick-closing gate 6 will be closed first, and the quick-closing gate 8 for the underground sewage treatment plant acts as a spare tire.

[0048] The flow regulating and controlling device 13 also includes an operating platform cavity, an inspection port 15 is provided at the upper end of the operating platform cavity, and an inspection ladder 14 extending into the interior of the transcending channel is provided at the inspection port 15 for easy inspection.

[0049] Through the scientific combination of adjusting weir gates and quick-closing gates, the flow of sewage can be effectively regulated and controlled, the risk of flooding of underground sewage treatment plants can be avoided, and the safe operation of underground sewage treatment plants can be ensured.

[0050] Working status:

[0051] Under normal circumstances, the electric gate 9 before the overtaking channel is in a normally closed state, the electric gate 10 after the overtaking channel is in a normally closed state, the pneumatic quick-closing gate 6 is in a normally open state, and the overflow electric gate 11 is in a normally closed state.

[0052] After passing through the water inlet pipe 1, the sewage enters the front flow control channel. Here, the flow control electric gate 2 can control the size of the sewage flow by opening and closing and the size of the opening. After the sewage enters the flow regulating channel through the front flow control channel, the flow regulating channel feeds back the liquid level signal to the control system through the flow regulating channel liquid level meter 3. The control system then combines the liquid level operation signal of the underground sewage treatment plant to control the electric regulating weir gate 4 to adjust the operating water level within a certain range, thereby achieving the purpose of flow regulation, which is more conducive to the good operation of the underground sewage treatment plant. After the sewage enters the rear flow control channel through the flow regulating channel, the flow control channel liquid level meter 5 controls the opening and closing of the pneumatic quick-closing gate 6 according to the liquid level of the rear flow control channel. When the warning liquid level is exceeded, the pneumatic quick-closing gate 6 is completely closed to prevent sewage from entering the underground sewage treatment plant and ensure that the underground sewage treatment plant is not submerged. At the same time, the overflow electric gate 11 of the overflow channel is opened to allow excess sewage to overflow. Sewage enters the front end of the underground sewage treatment plant through the outlet pipe 7 of the flow regulating and control well. Under normal circumstances, the quick closing gate 8 of the underground sewage treatment plant is in a normally open state. When the pneumatic quick closing gate 6 fails, the quick closing gate 8 in the underground sewage treatment plant can be activated to play a double insurance role. When the flow regulating channel equipment fails, the flow control electric gate 2 can be closed, and the electric gate 9 in front of the surpassing channel and the electric gate 10 behind the surpassing channel can be opened at the same time. The sewage enters the rear flow control channel through the surpassing channel and then enters the underground sewage treatment plant. At this time, the flow regulating channel can be inspected and repaired.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow regulating and controlling device suitable for the front end of an underground sewage treatment plant, characterized in that: include: A front flow control channel, which is provided with a flow control electric gate (2), an electric gate (9) in front of the overtaking channel, and a water inlet pipe (1); A flow regulating channel, which is provided with a regulating weir gate (4), wherein the front flow control channel and the flow regulating channel are controlled to be connected via a flow control electric gate (2); A rear flow control channel is provided with an electric gate (10) behind the channel and a water outlet pipe (7), the regulating weir gate (4) is located between the flow control channel and the rear flow control channel, and the flow control channel adjusts the operating water level in the flow control channel by adjusting the weir gate (4); An overrunning channel is provided with an overflow electric gate (11) and an overflow pipe (12); the front flow control channel and the overrunning channel are controlled to be connected by the overrunning channel front electric gate (9); and the rear flow control channel and the overrunning channel are controlled to be connected by the overrunning channel rear electric gate (10); The flow regulating channel is provided with a flow regulating channel liquid level meter (3); The outlet pipe (7) is connected to an underground sewage treatment plant; An underground sewage treatment plant quick-closing gate (8) is provided between the outlet pipe and the underground sewage treatment plant (16); The rear control flow channel is provided with a control flow channel liquid level meter (5) and a pneumatic quick-closing gate (6); The pneumatic quick-closing gate (6) is arranged at the outlet pipe (7) to control whether the sewage in the rear control flow channel enters the outlet pipe (7); The flow regulating and controlling device further comprises an operating platform cavity, wherein an inspection port (15) is provided at the upper end of the operating platform cavity; The overpass channel is provided with an inspection ladder (14) extending into the interior at the inspection opening (15); Under normal circumstances, the electric gate 9 before the overtaking channel is in a normally closed state, the electric gate 10 after the overtaking channel is in a normally closed state, the pneumatic quick-closing gate 6 is in a normally open state, and the overflow electric gate 11 is in a normally closed state; After passing through the water inlet pipe (1), the sewage enters the front flow control channel. Here, the flow control electric gate (2) can control the sewage flow rate by opening and closing and the size of the opening. After the sewage enters the flow control channel through the front flow control channel, the flow control channel feeds back the liquid level signal to the control system through the flow control channel liquid level meter (3). The control system then controls the electric regulating weir gate (4) to adjust the operating water level within a certain range in combination with the liquid level operation signal of the underground sewage treatment plant, thereby achieving the purpose of flow regulation, which is more conducive to the good operation of the underground sewage treatment plant. After the sewage enters the rear flow control channel through the flow control channel, the flow control channel liquid level meter (5) controls the opening and closing of the pneumatic quick-closing gate (6) according to the liquid level of the rear flow control channel. When the warning liquid level is exceeded, the pneumatic quick-closing gate (6) is completely closed to prevent sewage from entering the underground sewage treatment plant, thereby ensuring that the underground sewage treatment plant is not flooded. At the same time, the overflow electric gate (11) of the overflow channel is opened to allow the excess sewage to overflow. The sewage enters the front end of the underground sewage treatment plant after passing through the outlet pipe (7) of the flow control well. Under normal circumstances, the quick-closing gate (8) of the underground sewage treatment plant is in a normally open state. When the pneumatic quick-closing gate (6) fails, the quick-closing gate (8) in the underground sewage treatment plant can be activated to play a double insurance role. When the flow control channel equipment fails, the flow control electric gate (2) can be closed, and the electric gate (9) before the overtaking channel and the electric gate (10) after the overtaking channel can be opened at the same time. The sewage enters the rear flow control channel through the overtaking channel and then enters the underground sewage treatment plant. At this time, the flow control channel can be inspected and repaired.

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