CN221800055U - A device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump - Google Patents

Abstract

The utility model relates to a device for preventing siphon backflow of a water outlet pipe of a sewage treatment lifting pump, comprising a lifting pump arranged in a sewage collection tank, the lifting pump being connected with a filtering mechanism, the filtering mechanism comprising a connecting pipe, a filtering chamber and a filtering net, one end of the connecting pipe being connected with a water pipe of the lifting pump, the other end of the connecting pipe being connected with the filtering chamber, the filtering net being obliquely arranged in the filtering chamber, the filtering chamber being connected with a drainage pipe, the drainage pipe being connected with a check valve, and the sewage backflow is prevented by the check valve; wherein before the sewage flows through the check valve, it first passes through the filtering chamber and the filtering chamber and filters out impurities such as suspended matter in the sewage, thereby avoiding the suspended matter in the sewage causing the check valve to be loosely closed, so the utility model will not cause siphon backflow, avoids the sewage backflowing into the sewage collection tank and causing the sewage collection tank to overflow, and avoids the waste of electric energy.

Description

A device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump

Technical Field

The utility model relates to the technical field of water pipe siphon backflow prevention equipment, in particular to a device for preventing siphon backflow of a water outlet pipe of a sewage treatment lifting pump.

Background Art

The proper treatment of urban domestic water and industrial wastewater depends largely on sewage treatment technology. In recent years, relevant government departments in my country have begun to pay attention to this issue, and have made certain breakthroughs in technology, and the technical level is constantly improving. However, due to the increase in urban water consumption and urban sewage discharge, the difficulty and intensity of sewage treatment are also increasing, which has brought great challenges to sewage treatment. At present, sewage treatment technology is still a major problem in urban development planning.

The device to prevent the siphon backflow of the outlet pipe of the sewage treatment lifting pump is an important equipment in the sewage treatment process; during general sewage treatment, the lifting pump pumps the sewage from the collection tank to the sewage treatment tank, and it is necessary to install the device to prevent the siphon backflow of the outlet pipe of the sewage treatment lifting pump on the outlet pipe of the lifting pump. However, there are many suspended solids in the sewage. When the lifting pump stops working, the suspended solids in the water body will cause the device to prevent the siphon backflow of the outlet pipe of the sewage treatment lifting pump to not be closed tightly. Due to the existence of the siphon phenomenon, the sewage will flow back along the outlet pipe to the sewage collection tank, causing the sewage collection tank to overflow and causing a waste of electric energy.

Utility Model Content

The utility model aims to design a device for preventing siphon backflow of a water outlet pipe of a sewage treatment lifting pump, so as to solve the technical problems raised in the above-mentioned background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for preventing siphon backflow of a sewage treatment lift pump outlet pipe, comprising a lift pump arranged in a sewage collection tank, the lift pump is connected to a filtering mechanism, the filtering mechanism comprises a connecting pipe, a filter bin and a filter screen, one end of the connecting pipe is connected to the water pipe of the lift pump, the other end of the connecting pipe is connected to the filter bin, the filter screen is obliquely arranged in the filter bin, the filter bin is connected to a drain pipe, and the drain pipe is connected to a check valve.

Furthermore, the inner wall of the filter bin is provided with a mounting groove for mounting the filter screen.

Furthermore, a scraper is slidably connected in the filter bin, and the scraper is in contact with the filter screen.

Furthermore, sliding blocks are provided at both ends of the scraper, and the side walls of the filter bin are provided with sliding grooves adapted to the sliding blocks.

Furthermore, a sealing cover is provided on the top of the filter bin.

Furthermore, a sewage pipe is provided at the bottom of the filter bin, and a valve is provided on the sewage pipe.

Furthermore, the connecting pipe is connected to the water pipe of the lifting pump through a flange, and a sealing ring is provided on the flange.

Compared with the prior art, the utility model has the following beneficial effects: a check valve is arranged on the drain pipe to prevent sewage backflow through the check valve; before the sewage flows through the check valve, it first passes through the filter bin and the filter net to filter out impurities such as suspended matter in the sewage, thereby avoiding the suspended matter in the sewage causing the check valve to not close tightly. Therefore, the utility model will not have a siphon backflow phenomenon, avoids the sewage backflow into the sewage collection pool and causes the sewage collection pool to overflow, and avoids the waste of electric energy.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a partial structural schematic diagram of the utility model;

FIG3 is an enlarged schematic diagram of the structure at A in FIG2 ;

Fig. 4 is a cross-sectional view of the utility model;

The names of the components marked in the figure are as follows: 1. Lifting pump; 2. Filter mechanism; 201. Connecting pipe; 202. Filter chamber; 203. Filter net; 3. Drain pipe; 4. Check valve; 5. Mounting groove; 6. Scraper; 7. Slider; 8. Slide; 9. Cover; 10. Drain pipe; 11. Flange; 12. Sewage collection tank.

DETAILED DESCRIPTION

In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

Embodiment: Please refer to Figures 1-4, a device for preventing siphon backflow of the outlet pipe of a sewage treatment lift pump includes a lift pump 1 arranged in a sewage collection tank 12, the lift pump 1 is fixedly installed in the sewage collection tank 12, the lift pump 1 is connected to a filter mechanism 2, and the suspended impurities in the sewage are filtered out by the filter mechanism 2. Specifically, the filter mechanism 2 includes a connecting pipe 201, a filter bin 202 and a filter screen 203, one end of the connecting pipe 201 is connected to the water pipe of the lift pump 1, and the other end of the connecting pipe 201 is connected to the filter bin 202. The connecting pipe 201 is connected to the water pipe of the lift pump 1 through a flange 11, and the flange 11 facilitates the connection between the connecting pipe 201 and the lift pump 1. The water pipe of the lifting pump 1 is quickly assembled, and a sealing ring is provided on the flange 11. Specifically, a sealing ring is provided at the connection between the flange 11 and the connecting pipe 201 and at the connection between the flange 11 and the water pipe of the lifting pump 1. The connecting pipe 201 and the water pipe of the lifting pump 1 are sealed and connected through the sealing ring to achieve a sealed connection; the filter screen 203 is tiltedly arranged in the filter bin 202, and the tilted filter screen 203 can make the filtered impurities automatically slide to the bottom of the filter bin 202 to prevent impurities from accumulating on the filter screen 203 and causing the filter screen 203 to be blocked; the inner wall of the filter bin 202 is provided with an installation groove 5 for installing the filter screen 203, and the installation groove 5 is used to realize The filter screen 203 is detachably connected to the filter bin 202, so that the filter screen 203 can be taken out for cleaning or replacement. A scraper 6 is slidably connected in the filter bin 202, and the scraper 6 contacts the filter screen 203. Impurities on the filter screen are scraped off by the scraper 6, so as to further prevent the filter screen 203 from being blocked. A cover 9 is provided on the top of the filter bin 202, and the cover 9 can be opened so that the filter screen 203 can be assembled. Slide blocks 7 are provided at both ends of the scraper 6, and a slide groove 8 adapted to the slide block 7 is provided on the side wall of the filter bin 202. The staff can push the scraper 6 with the help of a clip or a push rod to make the scraper 6 slide along the filter screen, so as to scrape the filter screen. Impurities on the filter screen can be removed, so there is no need to take out the filter screen for cleaning; a sewage pipe 10 is provided at the bottom of the filter chamber 202, and a valve is provided on the sewage pipe 10. The inner wall of the bottom of the filter chamber 202 is funnel-shaped, so pollutants will automatically accumulate in the sewage pipe 10. After opening the valve, the sewage accumulated in the filter chamber 202 will be discharged together with the impurities, so the sewage pipe 10 is convenient for removing impurities in the filter chamber 202; the filter chamber 202 is connected to a drain pipe 3, and the drain pipe 3 is connected to a check valve 4. The drain pipe 3 is connected to a sewage treatment tank, and the check valve 4 is used to prevent sewage from flowing back into the sewage collection tank 12, wherein the check valve 4 is a prior art and will not be repeated here.

The working principle of this embodiment is as follows: when in use, the flange 11 is used to connect the connecting pipe 201 with the water pipe of the lifting pump 1, the filter chamber 202 is fixedly connected to the sewage collection tank 12 through the bracket, the filter screen 203 is inserted into the installation groove 5, and the cover 9 is covered; the lifting pump 1 is started, and the sewage is pumped from the sewage collection tank 12 to the sewage treatment tank through the lifting pump 1. During the pumping process, the check valve 4 on the drain pipe 3 is used to prevent the sewage from flowing back into the sewage collection tank 12, wherein the sewage first flows through the filter chamber 202, and the sewage is filtered by the filter chamber 202 and the filter screen 203. The filtered sewage then flows through the check valve 4 and then flows from the drain pipe 3 into the sewage treatment tank, and the sewage is treated by the sewage treatment tank; therefore, the utility model can avoid the suspended matter in the sewage causing the check valve 4 to be not closed tightly, and there will be no siphon backflow phenomenon, which can prevent the sewage from flowing back into the sewage collection tank 12 and causing the sewage collection tank 12 to overflow, and avoid the waste of electric energy.

The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims (7)

1. A device for preventing siphon backflow of a water outlet pipe of a sewage treatment lift pump, comprising a lift pump (1) arranged in a sewage collection tank (12), characterized in that: the lift pump (1) is connected to a filtering mechanism (2), the filtering mechanism (2) comprises a connecting pipe (201), a filtering chamber (202) and a filtering net (203), one end of the connecting pipe (201) is connected to a water pipe of the lift pump (1), the other end of the connecting pipe (201) is connected to the filtering chamber (202), the filtering net (203) is obliquely arranged in the filtering chamber (202), the filtering chamber (202) is connected to a drain pipe (3), and the drain pipe (3) is connected to a check valve (4). 2. The device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump according to claim 1 is characterized in that an inner wall of the filter chamber (202) is provided with a mounting groove (5) for mounting the filter net (203). 3. The device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump according to claim 1 is characterized in that a scraper (6) is slidably connected in the filter chamber (202), and the scraper (6) is in contact with the filter net (203). 4. The device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump according to claim 3 is characterized in that: sliders (7) are provided at both ends of the scraper (6), and the side wall of the filter chamber (202) is provided with a slide groove (8) adapted to the slider (7). 5. The device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump according to claim 1 is characterized in that a sealing cover (9) is provided on the top of the filter bin (202). 6. The device for preventing siphon backflow of the outlet pipe of a sewage treatment lifting pump according to claim 1 is characterized in that a sewage discharge pipe (10) is provided at the bottom of the filter chamber (202), and a valve is provided on the sewage discharge pipe (10). 7. The device for preventing siphon backflow of the outlet pipe of the sewage treatment lifting pump according to claim 1 is characterized in that the connecting pipe (201) is connected to the water pipe of the lifting pump (1) through a flange (11), and a sealing ring is provided on the flange (11).