CN106082431A - A kind of floatation type small-sized electric drainage arrangement - Google Patents

Abstract

A floating small electric drainage device, which is installed outside the side wall of the sewage treatment pool, and consists of a vacuum diaphragm pump, a suction conduit, a drainage conduit, a floating plate, a filter screen, a fixed frame and a fixed ring, and the filter screen is a cylindrical cup structure; the floating plate covers the filter net and is fixedly connected to form a closed space capable of filtering scum; the buoy is connected to the fixed frame in the sewage treatment tank with a fixed ring to suspend the buoy on the liquid surface of the sewage treatment tank; pump water One end of the conduit is connected to the inlet of the vacuum diaphragm pump, the other end is fixed in the buoy, and the drain conduit is connected to the outlet of the vacuum diaphragm pump. The advantages of the present invention are: the filter device is simple in structure, easy to maintain, and not easy to block; the filter screen of the filter device can be disassembled and replaced at any time, and the floating plate and filter grid are made of low-density polyethylene materials, which will not be corroded by sewage. Moreover, the cost is low; the density of the floating plate is similar to that of sewage, and it can float stably in the upper clear night.

Description

A floating small electric drainage device

technical field

The invention relates to the technical field of sewage treatment, in particular to a floating small electric drainage device.

Background technique

Aiming at the characteristics of small volume and simple operation of small-scale circulating activated sludge (CAST) integrated sewage treatment equipment, a floating small-scale electric drainage device is designed. The small-scale CAST integrated sewage treatment process is improved based on the Sequencing Batch Reactor (SBR) process and the traditional CAST process. A simple drainage device is needed to discharge the upper clear water. This floating small electric drainage device has a decanter that does not stir the sewage. It has the characteristics of discharging the upper layer and clearing the night due to the mud, and it is cheap and easy to repair and replace.

When using small-scale CAST integrated equipment to treat rural decentralized sewage, due to the small amount of water to be treated, the volume of the corresponding CAST integrated equipment is relatively small. The rotary decanter can filter the scum, but the small CAST integrated sewage treatment equipment is small in size, it is difficult to make a decanter of the corresponding specification, and the cost and maintenance cost are high, so there is a need for a decanter that can replace the decanter and A low-cost drainage device, which mainly uses a vacuum pump to drain water. The surface of the main reaction tank of CAST integrated equipment often has solid scum such as sludge debris, which is easy to cause blockage when ordinary vacuum pumps are used to drain water.

The principle of this device is similar to that of the buoy type decanter. The general buoy type decanter is mainly composed of buoys, decanter pipes, hoses, connectors and brackets. The working principle is based on gravity, buoyancy and flow pressure. The buoy type decanter designed by Lin Yuangen et al., see: non-powered decanter, application number 201320126422.4, authorized announcement number CN203128293U, the opening of the water guide is facing downward, and the exhaust pipe is connected above the water guide. There is an exhaust solenoid valve, and the water guide is always below the liquid surface to avoid inhaling scum on the liquid surface, but the sludge debris below the liquid surface may enter the water guide and cause blockage.

Contents of the invention

The object of the present invention is to solve the above existing problems and provide a floating small electric drainage device capable of filtering scum and low in price.

Technical scheme of the present invention:

A floating small electric drainage device, which is arranged outside the side wall of the sewage treatment tank, is composed of a vacuum diaphragm pump, a suction conduit, a drainage conduit, a floating plate, a filter screen, a fixing frame and a fixed ring, and the floating plate and the filter screen are composed of Made of low-density polyethylene material, the filter screen is a cylindrical cup-shaped structure; the floating plate is covered on the filter screen and fixedly connected to form a closed space that can filter scum - the buoy, and the buoy is connected to the fixed ring in the sewage treatment tank with a fixed ring. The buoy is suspended on the liquid surface of the sewage treatment tank on the frame to ensure that the buoy does not move horizontally while floating up and down with the liquid surface; one end of the suction conduit is connected to the inlet of the vacuum diaphragm pump, and the other end is fixed in the buoy. Connect to the outlet of the vacuum diaphragm pump.

Advantage and positive effect of the present invention are:

The filter device has simple structure, convenient maintenance, and is not easy to be blocked; the filter screen of the filter device can be disassembled and replaced at any time, and the floating plate and filter mesh are made of low-density polyethylene materials, which will not be corroded by sewage and are low in cost; The density is similar to that of sewage, and it can float stably in the upper clear night.

Description of drawings

Figure 1 is a schematic diagram of the front view of the drainage device.

Fig. 2 is a top structural schematic view of the drainage device.

In the figure: 1. Side wall of sewage treatment tank 2. Vacuum diaphragm pump 3. Suction conduit 4. Drainage conduit 5. Floating plate 6. Filter net 7. Fixing frame 8. Fixing ring.

detailed description

A floating small electric drainage device, as shown in Figure 1-2, is installed outside the side wall 1 of the sewage treatment tank, and is fixed by a vacuum diaphragm pump 2, a suction conduit 3, a drainage conduit 4, a floating plate 5, and a filter screen 6. frame 7 and a fixed ring 8, the floating plate 5 and the filter screen 6 are made of low-density polyethylene material, the filter screen 6 is a cylindrical cup-shaped structure; the floating plate 5 is covered on the filter screen 6 and fixedly connected to form an energy The closed space for filtering scum-the buoy, the buoy is connected to the fixed frame 7 in the sewage treatment tank with a fixed ring 8 to suspend the buoy on the liquid level of the sewage treatment tank, so as to ensure that the buoy floats up and down with the liquid surface and will not be leveled Move; one end of the suction conduit 3 is connected to the inlet of the vacuum diaphragm pump 2, the other end is fixed in the buoy, and the drain conduit 4 is connected to the outlet of the vacuum diaphragm pump 2.

In this embodiment, the model of the vacuum diaphragm pump is KLP02-EKG2.

The floating plate 5 and the filter screen 6 are all made of 0.915-0.940g/ ^cm3 low-density polyethylene material, the filter screen 6 is designed as a cylindrical cup-shaped structure, the bottom surface radius is 6cm, the height is 10cm, and the thickness of the polyethylene plate is 1mm. Small size, easy to disassemble and replace.

When the drainage device is in operation, when the supernatant liquid entrained with scum passes through the filter screen 6, the scum is intercepted by the filter screen, and the clarified liquid is discharged outside, so that the water quality is greatly improved. When cleaning the scum of the filter screen 6, the vacuum diaphragm pump 2 is closed, and the filter screen of the buoy can be directly and conveniently removed. Due to the low cost, several filter screens can be prepared at the same time and replaced at any time.

Based on this embodiment, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this patent.

Claims (1)

1. a floatation type small-sized electric drainage arrangement, it is characterised in that: be arranged at treatment tank side-wall outer side, by vacuum every Membrane pump, the conduit that draws water, drainage duct, kickboard, drainage screen, fixed mount and clamping rings composition, kickboard and drainage screen are by low close Prepared by degree polythene material, drainage screen is cylindrical cup structure；Kickboard covers on drainage screen and fixing connecting and composing can mistake Closing space-the floating drum of filter scum silica frost, floating drum clamping rings is removably attached on the fixed mount in treatment tank make floating drum be suspended in The liquid level for the treatment of tank, it is ensured that floating drum will not move horizontally while fluctuating with liquid level；Draw water one end of conduit Being connected with the import of vacuum diaphragm pump, the other end is fixed among floating drum, and drainage duct is connected with vacuum diaphragm delivery side of pump.