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Domestic sewage pretreatment device

A pretreatment device and domestic sewage technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, centrifugal separation water/sewage treatment, etc., can solve the problem of slow water flow, reduced sewage treatment speed, grille , screen floating debris blockage and other problems, to achieve the effect of improving the treatment efficiency

Inactive Publication Date: 2019-09-20
王玉玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the efficiency of the existing sewage pretreatment equipment for separating solid waste is relatively slow, and cannot adapt to the increasing amount of domestic sewage, especially during the peak period of water consumption or after rain, a large amount of sewage carries sand or floating objects into the sewage treatment plant. Traditional The grids and screens are easy to be blocked by floating objects, and it is troublesome to clean; and the grit chamber or sand-water separator requires a slow water flow rate to allow the sand to settle. If the flow rate of the sewage is reduced, the treatment speed of the sewage will be greatly reduced

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1 to Figure 5 As shown, the domestic sewage pretreatment device in this embodiment includes a float fishing mechanism 1100, a sand-water preliminary separation mechanism 1200, and a sand-water separator 1300; among them:

[0037] The floating object fishing mechanism 1100 is connected to the end of the water delivery channel 2000 and includes a fixed frame 1110, a conveyor belt 1120 and a driving mechanism (not shown in the figure). The front end of the fixed frame 1110 is fixed to the water delivery channel 2000. The rear end of the fixing frame 1110 is connected to the water inlet of the sand-water preliminary separation mechanism 1200; the conveyor belt 1120 is arranged obliquely, and its bottom extends into the sewage in the water delivery channel 2000 and has a certain distance from the bottom of the water delivery channel 2000. The bottom of the conveyor belt 1120 is inserted into the sewage to catch the floating objects in the sewage. The bottom of th...

Embodiment 2

[0052] Such as Figure 6 to Figure 8 As shown, in the domestic sewage pretreatment device in this embodiment, on the basis of the technical solution in the above embodiment, the conveyor belt 1120, the driving mechanism, and the squeeze roller 1130 are all mounted on the movable frame 1150. The movable frame 1150 is arranged in the fixed frame 1110, one end of the movable frame 1150 is hinged to the fixed frame 1110, the other end of the movable frame 1150 is provided with a float 1151, and the bottom of the conveyor belt 1120 is lower than The float 1150 height.

[0053] The movable frame 1150 includes mounting plates on both sides and fixing rods connecting the mounting plates on both sides. The conveyor belt and the squeeze roller are mounted on the mounting plates, and the floating ball 1151 is mounted on the bottom fixing rod.

[0054] Through the solution of this embodiment, the buoyancy of the floating ball 1151 causes the movable frame 1150 to rotate along its hinged end, ...

Embodiment 3

[0056] Such as Picture 9 As shown, the domestic sewage pretreatment device in this embodiment is based on the technical solutions in the above two embodiments, respectively. The separation barrel 1210 is also provided with filter cotton 1240, and the filter cotton 1240 is filled with 述Separation barrel 1210. The sewage flowing out of the outlet hole 1221 is further filtered to prevent the sand and gravel from leaking out of the outlet hole 1221 due to too small flow and insufficient centrifugal force. After the filter cotton 1240 is full of sewage, since the outlet hole 1221 always separates the sewage, the sewage is discharged through the sewage outlet 1212 under the action of the pressure in the barrel and its own gravity.

[0057] In this embodiment or other embodiments, a pumping device 1250 is provided at the sewage outlet 1212, the pumping device is, for example, a water pump, etc., for pumping out the sewage flowing into the separation bucket 1210 to improve treatment effi...

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Abstract

The invention discloses a domestic sewage pretreatment device, which comprises a floater fishing mechanism, the floater fishing mechanism is connected to the tail end of a water conveying channel and comprises a fixing frame, a conveying belt and a driving mechanism; the front end of the fixing frame is fixed on the water conveying channel; and the rear end of the fixing frame is communicated with the water inlet of a sand water preliminary separation mechanism. The conveying belt is obliquely arranged, the bottom of the conveying belt extends into the conveying channel and has a certain distance from the bottom of the conveying channel, and the low end of the top of the conveying belt is provided with a receiving groove. The sand water preliminary separation mechanism comprises a separation barrel and a separation pipe, the separation pipe is arranged in the separation barrel, the central axis of the separation pipe is in an inverted conical spiral line shape, the top of the separation pipe is communicated with the water inlet, and the bottom of the separation pipe is communicated with a sand water outlet of the separation barrel. The lower part of the separation pipe is provided with a plurality of liquid outlet holes, the liquid outlet holes are arranged to the inner side of the separation pipe, and the lower part of the separation barrel is also provided with a sewage liquid outlet. A sand water separator is connected to the sand water outlet. The device can improve the sewage treatment efficiency.

Description

Technical field [0001] The present invention relates to sewage treatment equipment, and more specifically, to a domestic sewage pretreatment device. Background technique [0002] The pretreatment of sewage is a pretreatment process set up according to the water quality requirements of the subsequent treatment process before the sewage enters the traditional sedimentation and biological treatment. It is a long throat for sewage treatment. For urban sewage treatment plants and dispersed sewage treatment plants within pollution sources, pretreatment mainly includes treatment equipment such as grilles, screens, grit tanks, sand water separators, etc., and mainly removes solid waste (such as sand, gravel, Food residues, etc.) are separated. [0003] However, the existing sewage pretreatment equipment is slow in separating solid waste and cannot adapt to more and more domestic sewage. Especially during the peak period of water use or after the rain, a large amount of sewage carries grav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02E02B15/10
CPCC02F1/001C02F1/38C02F1/40C02F9/00E02B15/104
Inventor 段利秀
Owner 王玉玲