CN205672619U - A kind of cleaning plant for second pond distributing channel - Google Patents

Abstract

nullThe utility model relates to sewage disposal and environmental engineering technical field，Especially a kind of cleaning plant for second pond distributing channel，Including fixing mobile jib and the water-supply-pipe being fixedly installed on fixing mobile jib，Fixing mobile jib end is provided with skimming plate，Skimming plate is connected with fixing mobile jib by baffle plate，Skimming plate front end is provided with water injector，Water injector connects with water-supply-pipe，Cleaning plant also includes electromagnetic inductor and magnetic valve，Fixing mobile jib is fixedly mounted on second pond scraping and sucking machine scum silica frost scraper plate，Skimming plate is connected by middle high-strength spring by two boards，Skimming plate both sides are equipped with pulley，Simple in construction，Easy to operate，Stable and reliable in work，Processing cost is low，The cooperation of skimming plate and water injector runs without adding driving means，Energy-conserving and environment-protective，And skimming plate size suitably adjusts also dependent on width and the height of outlet canal，Effectively improve cleaning quality and the cleaning efficiency of various outlet canal or second pond.

Description

A cleaning device for the distribution channel of the secondary sedimentation tank

technical field

The utility model relates to the technical field of sewage treatment and environmental protection engineering, in particular to a cleaning device for a distribution channel of a secondary settling tank.

Background technique

The secondary settling tank is the last settling tank in the biochemical treatment section of the sewage treatment plant. It needs to settle the activated sludge in the process of biochemical reaction, and then return it to the biochemical reaction tank through the return sludge pump to maintain the activity of the activated sludge. At the same time, the microorganisms in the activated sludge should release phosphorus in the secondary settling tank as little as possible. Therefore, the working efficiency of the secondary settling tank directly affects the overall benefit of the sewage treatment plant. Compared with the traditional central water-inlet type, the weekly-inlet and weekly-outlet sedimentation tank has the advantages of larger effective volume, high hydraulic load, high overflow rate, best hydraulic stability, and the largest range of water inlet surface. It ensures uniform water distribution. On the premise of stability, a good treatment effect can be obtained, but at present, the technology of week-in and week-out secondary settling tanks is still monopolized by foreign manufacturers, and there is no mature design and manufacturing experience in China, especially for the design of the distribution channel. The engineering design is unique and it is difficult to test the actual effect, which affects the application and standardization process of the sedimentation tank in and out of the week. The water distribution system of the week-in and week-out type secondary settling tank is a water distribution tank and a water distribution hole. The quality of the water distribution is related to the cross-sectional shape of the water distribution tank, the water depth of the water distribution tank and other factors. According to the water flow method, the water flow in the water distribution tank can be designed as There are two ways of unidirectional flow and bidirectional flow. Generally, unidirectional flow should be selected for diameters below 40m, but unidirectional flow distribution tanks may cause unsatisfactory water distribution uniformity, and sludge may accumulate in the tank, which is not conducive to end water distribution. Large cross-sectional area and other defects are required, while pools with a diameter of more than 40m should be considered comprehensively. The advantage of bidirectional flow is that the widening section of the distribution channel can be made narrower. Each road only flows through half a circle, and the head loss of the distribution channel is small. In order to ensure the uniformity of water distribution, the calculation method of changing the width of the distribution channel is adopted in the week-in and week-out secondary settling tank, which leads to the secondary settling tank being an eccentric circle, and at the same time In addition, the construction accuracy of the concrete pool body is not easy to guarantee. Therefore, when the water intake is insufficient, the water flow rate in the narrow place is due to the resistance of the wet circumference, and the water flow is not smooth. The hydraulic characteristics of the uniform flow in the open channel, so there is also an obvious shortcoming in the two-way flow: the scum problem of the distribution channel.

Utility model content

The technical problem to be solved by the utility model is: in order to solve the existing above-mentioned problems, the utility model provides a cleaning device for the distribution channel of the secondary settling tank, which drives the skimming plate and the water spray device through electromagnetic induction to cooperate to realize skimming And automatic operation of slag discharge, saving manpower, energy saving and environmental protection.

The technical solution adopted by the utility model to solve the technical problem is: a cleaning device for the distribution channel of the secondary sedimentation tank, installed in the skimming well, including a fixed main rod and a water delivery pipe fixed on the fixed main rod, fixed The end of the main rod is provided with a scum skimmer, which is connected to the fixed main rod through a baffle, and the front end of the scum skimmer is provided with a water spray device, which communicates with the water delivery pipe.

Further, the cleaning device also includes an electromagnetic sensor arranged on the fixed main pole and an electromagnetic valve arranged at a pool wall 10-15m away from the skimming well, so as to realize automatic operation of slag skimming and slag discharge.

Further, the fixed main rod is fixedly installed on the scum scraper of the secondary sedimentation tank scraping and suction dredger, and the rotation of the scum scraper drives the fixed main rod to rotate and clean.

Further, the baffle is movably connected with the fixed main rod through the rotating shaft, which can be flexibly set.

Further, the scum skimmer is connected by two plates through a high-strength spring in the middle, which is scalable and adaptable to water distribution tanks with different widths, so as to ensure the fit between the scum skimmer and the tank wall.

Further, pulleys are provided on both sides of the scum skimmer to prevent damage to the tank wall by the scum skimmer.

Further, the water spraying device is a duckbill nozzle, and the water spraying direction of the duckbill nozzle faces the water distribution channel.

Further, the water inlet end of the water delivery pipe is located 30-60cm below the water surface of the secondary settling tank, and the water outlet end of the water delivery pipe is located at the lower part of the outlet distribution channel, which can ensure sufficient water supply for the sprinkler device and fully carry out the water in the secondary settling tank. use.

Further, the diameter of the water delivery pipe is greater than DN40.

Further, a water pump is provided at the water inlet end including the water delivery pipe, and the water pump is fixedly arranged on the column in the secondary sedimentation tank, and the power of the water pump is ≥1.5kw.

The beneficial effects of the utility model are that the structure is simple, the operation is convenient, the work is stable and reliable, and the processing cost is low. The coordinated operation of the skimming plate and the water spray device does not need to add a driving device, which is energy-saving and environmentally friendly, and the size of the skimming plate can also be adjusted according to the size of the outlet channel. Properly adjust the width and height of the tank to effectively improve the cleaning quality and cleaning efficiency of various outlet channels or secondary sedimentation tanks.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of the utility model installed in a skimming well.

Fig. 2 is a schematic structural view of the utility model.

Fig. 3 is a schematic diagram of the scum skimmer of the present invention.

Among the figure 1, fixed main pole, 2, water delivery pipe, 3, scum skimmer plate, 4, baffle plate, 5, sprinkler, 6, rotating shaft, 7, high-strength spring, 8, pulley, 10, scum skimming well.

detailed description

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figures 1, 2, and 3, the utility model is a cleaning device for the distribution channel of the secondary sedimentation tank, which is installed in the skimming well 10 and includes a fixed main rod 1 and a conveying device fixed on the fixed main rod 1. The water pipe 2, the end of the fixed main rod 1 is provided with a skimming plate 3, the skimming plate 3 is connected with the fixed main rod 1 through the baffle plate 4, the front end of the skimming plate 3 is provided with a water spray device 5, the water spray device 5 and the water delivery pipe 2 connected, the cleaning device also includes an electromagnetic sensor arranged on the fixed main rod 1 and an electromagnetic valve arranged on the wall of the pool 10-15m away from the skimming well 10, and the fixed main rod 1 is fixedly installed in the secondary sedimentation tank for scraping and sucking mud On the dross scraper of the machine, the baffle plate 4 is movably connected with the fixed main rod 1 through the rotating shaft 6, and the skimming plate 3 is connected by two plates through a high-strength spring 7 in the middle, and there are pulleys 8 on both sides of the skimming plate 3, The water spray device 5 is a duckbill nozzle, and the water spraying direction of the duckbill nozzle faces the water distribution channel. The water inlet end of the water delivery pipe 2 is located 30-60 cm below the water surface of the secondary sedimentation tank, and the water outlet end of the water delivery pipe is located at the lower part of the outlet distribution channel. The diameter of 2 is greater than DN40, and the water inlet end of the water delivery pipe 2 is provided with a water pump, which is fixedly arranged on the column in the secondary settling tank, and the power of the water pump is ≥1.5kw.

Use the water spray device 5 and the skimming plate 3 to cooperate, use the water spraying device 5 to wash away the thicker scum deposited on the inner surface of the tank, and then use the skimming plate 3 to clean the scum into the skimming well 10, which overcomes the The existing technology only uses the skimming plate 3 to clean the defects that are not clean and there are dead spots; the baffle plate 4 can be flexibly set under the drive of the rotating shaft 6, especially for the large-diameter secondary settling tank, which can be installed according to the specific conditions. The change of water load combines the advantages of single and two-way flow, and is used in combination to achieve that the uniformity of water distribution will not be affected by a large amount of scum in the water distribution tank; the skimming plate 3 is connected by two plates through a high-strength spring 7 in the middle to overcome The current situation that the traditional scum skimmer 3 is difficult to use in the variable-width design water distribution tank is eliminated; the rotation of the scum scraper of the secondary sedimentation tank scraper and suction dredger drives the fixed main rod 1, so that the whole device rotates along the distribution channel to complete the alignment of the channel wall Cleaning, so as to realize the cleaning of the distribution channel while scraping the mud in the secondary sedimentation tank, without providing additional power, which greatly improves the energy utilization rate, and avoids the setting of driving equipment, energy saving and environmental protection; the water inlet end of the water pipe 2 Located 30-60cm below the water surface of the secondary settling tank, it can fully ensure that the water spray device has sufficient water supply, and can make full use of the water in the secondary settling tank, avoiding the waste of water resources caused by spraying with clean water; using duckbill nozzles , greatly improve the spraying force and improve the cleaning effect of the canal wall; the use of electromagnetic sensors and solenoid valves can realize the automatic operation of slag skimming and slag discharge, which greatly saves labor costs; the structure is novel, the design is ingenious, the manufacturing cost is low, and the whole device runs There is no need to add a driving device, energy saving and environmental protection, and the size of the device can also be adjusted appropriately according to the width and height of the outlet channel, and can be widely used in cleaning various outlet channels or secondary sedimentation tanks.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (10)

1. A cleaning device for the distribution channel of the secondary settling tank, installed in the skimming well (10), comprising a fixed main rod (1) and a water delivery pipe (2) fixedly arranged on the fixed main rod (1), It is characterized in that a scum skimmer (3) is provided at the end of the fixed main rod (1), and the scum skimmer (3) is connected with the fixed main rod (1) through a baffle (4), and the scum skimmer (3) The front end is provided with a water spray device (5), and the water spray device (5) communicates with the water delivery pipe (2). 2. A cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the cleaning device also includes an electromagnetic inductor arranged on the fixed main rod (1) and an electromagnetic sensor arranged at a distance from The solenoid valve at the 10-15m pool wall of the slag well (10). 3. The cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the fixed main rod (1) is fixedly installed on the scum scraper of the dredge scraper and suction machine of the secondary settling tank. 4. A cleaning device for a secondary settling tank distribution channel according to claim 1, characterized in that the baffle (4) is movably connected with the fixed main rod (1) through a rotating shaft (6). 5. The cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the skimming plate (3) is connected by two plates through a high-strength spring (7) in the middle. 6. The cleaning device for the distribution channel of the secondary settling tank according to claim 5, characterized in that pulleys (8) are provided on both sides of the skimming plate (3). 7. A cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the water spray device (5) is a duckbill nozzle, and the water spraying direction of the duckbill nozzle is towards the distribution channel. 8. A cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the water inlet end of the water delivery pipe (2) is located 30-60 cm below the water surface of the secondary settling tank, and the water delivery pipe's The water outlet is located at the lower part of the distribution channel. 9. A cleaning device for a secondary sedimentation tank distribution channel according to claim 1, characterized in that the diameter of the water delivery pipe (2) is greater than 40mm. 10. The cleaning device for the distribution channel of the secondary settling tank according to claim 1, characterized in that, the water inlet end of the water delivery pipe (2) is provided with a water pump, and the water pump is fixedly arranged in the secondary settling tank On the column, and the pump power ≥ 1.5kw.