Integrated sewage built-in lifting equipment

Abstract

The utility model relates to the technical field of sewage treatment, and one embodiment of the utility model provides integrated sewage built-in lifting equipment, which is used for lifting sewage and then discharging the sewage into a municipal sewage header pipe, and comprises a box body, the box body is used for accommodating sewage entering through a sewage inlet; the lifting pump is arranged in the box body and is provided with a water inlet and a water outlet, and the water inlet is communicated with the interior of the box body; one end of the discharge pipe is communicated with the water outlet, and the other end extends to the outer side of the box body and is communicated with a municipal sewage header pipe; the back-flushing device is arranged in the box body, the back-flushing device is communicated with the discharge pipe, the back-flushing device is provided with a back-flushing spray head, the back-flushing spray head faces one side of the water inlet, and the back-flushing device is used for blowing away impurities located at the water inlet through the back-flushing spray head. And the smashed solid impurities are intertwined and accumulated, so that the pipeline and the lifting pump are blocked.

Description

Technical Field

[0001] The embodiments of this application relate to the field of wastewater treatment technology, and more specifically, to an integrated wastewater built-in lifting device. Background Technology

[0002] In the infrastructure of modern large-scale commercial buildings, the sewage discharge system is crucial to the normal operation of the mall, and the sewage lifting unit undertakes the important task of raising sewage from low-lying areas to the municipal drainage network. The sewage discharge of large shopping malls is characterized by large flow fluctuations and complex composition, and the sewage contains various solid debris such as toilet paper and plastic bags, which can easily cause blockages.

[0003] Currently, most shopping malls use sewage lifting devices that employ agitators to break up solid debris in the sewage. However, the broken-up solid debris can still entangle and accumulate, causing blockages in pipes and lifting pumps. Small impurities can also clog the lifting pumps, while larger impurities can obstruct sewage flow. Blockages in sewage lifting devices not only increase operating costs, leading to frequent manual cleaning and equipment maintenance, and mall shutdowns, but also pose environmental pollution risks, causing sewage overflows, unpleasant odors, and even sewage backflow, damaging the mall's electrical equipment and other infrastructure, and posing serious safety hazards. Utility Model Content

[0004] To overcome the above-mentioned defects, embodiments of this application provide an integrated built-in sewage lifting device, which solves the technical problem in the prior art where crushed solid debris in sewage lifting devices still entangles and accumulates, causing blockages in pipes and lifting pumps.

[0005] According to one aspect, at least one embodiment of this application provides an integrated built-in sewage lifting device for lifting sewage and discharging it into a municipal sewage main, comprising:

[0006] A tank having a sewage inlet, the tank being used to contain sewage entering through the sewage inlet;

[0007] A booster pump is installed inside the tank. The booster pump has an inlet and an outlet, and the inlet is connected to the inside of the tank.

[0008] The discharge pipe has one end connected to the water outlet and the other end extended to the outside of the box and connected to the municipal sewage main pipe.

[0009] A backflush device is disposed inside the housing and is connected to the discharge pipe. The backflush device has a backflush nozzle facing the inlet side. The backflush device is used to blow away impurities located at the inlet through the backflush nozzle.

[0010] Optionally, a level gauge is installed inside the tank, which is electrically connected to the lift pump. The level gauge is used to detect the sewage level inside the tank and transmit a signal to the lift pump to start or stop it.

[0011] Optionally, the level gauge has a high-level detection point and a low-level detection point, wherein the high-level detection point is used to define the highest level after the liquid level rises, and the low-level detection point is used to define the lowest level after the liquid level falls.

[0012] Optionally, a first filter element may be detachably installed inside the housing near the sewage inlet, the first filter element being used to filter out dirt in the sewage.

[0013] Optionally, the first filter element has a receiving cavity for collecting solid waste.

[0014] Optionally, a second filter element is provided inside the tank, located between the first filter element and the lift pump, and the second filter element is used to perform secondary filtration on the sewage flowing to the lift pump.

[0015] Optionally, a check valve is provided at the bottom of the discharge pipe to prevent sewage in the discharge pipe from flowing back into the lift pump or tank, so that the discharge pipe stores the backwash water of the backwasher.

[0016] Optionally, a branch pipe is connected to the discharge pipe, one end of which is connected to the backflushing device, and the other end of which is connected to a section of the discharge pipe located above the check valve.

[0017] Optionally, a vent is provided on the top of the box, and the vent communicates with the interior of the box.

[0018] Optionally, the top of the box is also provided with a cover plate, and the cover plate is provided with a snap-fit ​​component, and the cover plate is snapped to the box through the snap-fit ​​component.

[0019] The beneficial effects of the embodiments of this application are as follows:

[0020] In this application, during sewage lifting operations, after sewage flows into the tank through the sewage inlet, the lift pump starts, lifting the sewage in the tank to the municipal sewage main through the discharge pipe. During the intervals between lift pump operations, some water in the discharge pipe flows into the backflushing device. When a certain pressure is reached, the backflushing device sprays water towards the inlet through backflushing nozzles, blowing away any potentially accumulated impurities and preventing solid impurities from clogging the inlet. This effectively prevents impurities from accumulating at the inlet, reduces the risk of the lift pump being damaged due to blockage, reduces equipment maintenance frequency, lowers operating costs, and ensures smooth sewage discharge, avoiding environmental pollution caused by sewage overflow. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this application and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the internal structure of the sewage lifting device in one embodiment of this application;

[0023] Figure 2 for Figure 1 A top view of the sewage lifting device in the embodiment.

[0024] In the diagram: 1. Tank body, 101. Sewage inlet, 2. Booster pump, 201. Inlet, 202. Outlet, 3. Discharge pipe, 4. Backflush device, 401. Backflush nozzle, 5. Level gauge, 501. High level detection point, 502. Low level detection point, 6. First filter element, 601. Receiving cavity, 7. Second filter element, 8. Check valve, 9. Branch pipe, 10. Vent hole, 11. Cover plate, 12. Snap-fit ​​component. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the scope of the application.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-2 As shown, an integrated built-in sewage lifting device according to an embodiment of this application is used to lift sewage and discharge it into the municipal sewage main. It includes a rectangular housing 1, which is installed on the ground floor of the second basement level. A sewage inlet 101 is located on one side of the inner wall of the housing, and the housing 1 is used to accommodate sewage entering through the sewage inlet 101. A lifting pump 2 is located in the middle of the housing, and the lifting pump 2 has an inlet 201 and an outlet 202. The inlet of the lifting pump 2 is not higher than the low-level detection of the level gauge 5. Point 502, the inlet 201 is connected to the inside of the tank 1; the tank 1 is also equipped with a vertically arranged discharge pipe 3, one end of the discharge pipe 3 is connected to the outlet 202, and the other end extends to the outside of the tank 1 and is connected to the municipal sewage main pipe; the backflushing device 4 is set in the tank 1 near the discharge pipe 3, and the backflushing device 4 is connected to the discharge pipe 3. The backflushing device 4 has a backflushing nozzle 401, which faces the inlet 201. The backflushing device 4 is used to blow away the impurities located at the inlet 201 through the backflushing nozzle 401.

[0032] For example, such as Figure 1As shown, it's important to note that municipal sewage mains are typically located about one meter below ground level, while shopping mall sewage pipes or tanks are usually located on the second basement level. In this case, a sewage lifting device is needed to raise the sewage to the municipal sewage main. For example, an integrated built-in sewage lifting device can be installed in the sewage collection area on the second basement level of a large shopping mall. The entire tank 1 is installed on the ground. The inlet 201 of tank 1 is connected to the sewage collection area via a pipe, allowing sewage from the collection area to enter tank 1. To extend the service life of tank 1 and prevent leaks, it is made of corrosion-resistant materials, such as stainless steel. The lifting pump 2 is a cutting pump with high head and large flow characteristics. The cutting pump can further cut solid impurities in the sewage before it is drawn in. The discharge pipe 3 can be made of cast iron or PVC pipe, and its top passes through the top of tank 1, connecting to the municipal sewage main. The backflush device 4 is installed at the bottom of the housing 1 near the inlet 201 of the booster pump 2. At least one backflush nozzle 401 is provided. If multiple backflush nozzles 401 are provided, they can be arranged in a fan shape to ensure that the inlet 201 area is fully covered.

[0033] Specifically, during sewage lifting operations, sewage flows into tank 1 through sewage inlet 101. The lift pump 2 then starts, lifting the sewage from tank 1 through discharge pipe 3 to the municipal sewage main. During the downtime of the lift pump 2, some water in discharge pipe 3 flows into backflushing device 4. When a certain pressure is reached, backflushing device 4 sprays water through backflushing nozzle 401 towards inlet 201, dispersing any accumulated impurities and preventing solid impurities from clogging inlet 201. This effectively prevents impurities from accumulating at inlet 201, reducing the risk of damage to lift pump 2 due to blockage, decreasing equipment maintenance frequency, lowering operating costs, and ensuring smooth sewage discharge, thus avoiding environmental pollution caused by sewage overflow.

[0034] In some examples, the level sensor 5 is an ultrasonic level sensor, installed inside the tank 1. The level sensor 5 is connected to the control cabinet of the booster pump 2 via a cable to ensure accurate transmission of the level signal. The level sensor 5 can monitor the sewage level inside the tank 1 in real time.

[0035] For example, such as Figure 1 As shown, the level sensor 5 continuously monitors the sewage level inside the tank 1. When the level rises to the set start-up height, the level sensor 5 sends a signal to the control cabinet of the lift pump 2 to start the lift pump 2; when the level drops to the set stop height, the level sensor 5 sends a signal to stop the lift pump 2. This achieves automatic start and stop of the lift pump 2, improving the automation level of sewage discharge, while preventing the lift pump 2 from running dry and extending the service life of the equipment.

[0036] In some examples, the level sensor 5 has clearly defined high and low level detection points 502, which can control the start and stop of the booster pump 2 to ensure that the sewage level in the tank 1 is always within a reasonable range.

[0037] For example, such as Figure 1 As shown, for example, the high-level detection point 501 is set 50cm from the top of the tank, and the low-level detection point 502 is set 30cm from the bottom of the tank. When the level gauge 5 detects that the liquid level has reached the high-level detection point 501, the lift pump 2 starts; when the liquid level drops to the low-level detection point 502, the lift pump 2 stops. Specifically, as sewage continuously flows into the tank 1, the liquid level gradually rises. When it reaches the high-level detection point 501, the level gauge 5 sends a signal to start the lift pump 2; the lift pump 2 works to lower the liquid level, and when it drops to the low-level detection point 502, the level gauge 5 sends a signal to stop the lift pump 2. This avoids sewage overflow due to excessively high liquid levels or the lift pump 2 running dry due to excessively low liquid levels, improving the stability and reliability of the equipment operation.

[0038] In some examples, a first filter element 6 is detachably installed inside the housing 1 near the sewage inlet 101. The first filter element 6 is used to filter dirt in the sewage. The first filter element 6 is a basket or a frame structure with a holding space. The first filter element 6 can slide along the inner wall of the housing 1. Specifically, a support can be set inside the housing 1 near the sewage inlet 101 to support the first filter element 6, and the first filter element 6 can be placed directly on the support. When the solid impurities inside the first filter element 6 are about to fill up, the operator can open the cover 11 of the housing 1 to remove the first filter element 6, then empty the solid impurities and put it back on the support inside the housing 1.

[0039] For example, such as Figure 1 As shown, the first filter element 6 is detachable for easy cleaning and replacement, effectively filtering larger debris from wastewater and protecting downstream equipment. When wastewater flows into the tank 1, it first passes through the first filter element 6, where larger debris such as plastic bags and toilet paper are intercepted. The filtered wastewater then continues to flow into the tank 1. This initial filtration of larger debris reduces the risk of blockage to the booster pump 2 and the discharge pipe 3 caused by larger solid debris.

[0040] In some examples, the first filter element 6 has a receiving cavity 601 for collecting solid waste.

[0041] For example, such as Figure 1 As shown, this facilitates the collection and cleaning of solid waste, preventing it from floating around inside the housing 1. Solid waste intercepted by the first filter element 6 falls directly into the lower receiving cavity 601. When the receiving cavity 601 is full, the first filter element 6 can be removed for cleaning. This facilitates centralized cleaning of solid waste, improves cleaning efficiency, reduces manual cleaning workload, and keeps the inside of the housing 1 clean.

[0042] In some examples, a second filter element 7 is vertically installed inside the housing 1. The second filter element 7 is a grid plate. The second filter element 7 is located between the first filter element 6 and the lift pump 2. The second filter element 7 is used to perform secondary filtration on the sewage flowing to the lift pump 2.

[0043] For example, such as Figure 1 As shown, it should be noted that even with the initial filtration by the first filter element 6, a significant amount of solid impurities will still enter the housing 1. Therefore, a second filter element 7 is needed to perform secondary filtration on the wastewater flowing towards the lift pump 2. Working in conjunction with the first filter element 6, this forms a multi-stage filtration system, improving the filtration efficiency. The wastewater, after being filtered by the first filter element 6, passes through the second filter element 7 again as it flows towards the lift pump 2, intercepting any remaining medium or fine impurities. This effectively filters impurities from the wastewater, preventing them from entering the lift pump 2, reducing the risk of damage to the lift pump 2 due to clogging, and improving the stability of equipment operation.

[0044] In some examples, a check valve 8 is provided at the bottom of the discharge pipe 3. The check valve 8 is used to prevent sewage in the discharge pipe 3 from flowing back into the lift pump 2 or the tank 1, so that the discharge pipe 3 stores the backwash water of the backwasher 4.

[0045] For example, such as Figure 1 As shown, the check valve 8 is an electromagnetically controlled swing check valve, installed at the bottom of the discharge pipe 3, ensuring that a certain amount of backflushing water is stored in the discharge pipe 3. The check valve 8 prevents sewage backflow and simultaneously stores backflushing water in the discharge pipe 3, providing a water source for the backflushing device 4. When the lift pump 2 is working, sewage is discharged through the discharge pipe 3, and the check valve 8 opens; when the lift pump 2 stops working, the check valve 8 closes, preventing sewage in the discharge pipe 3 from flowing back into the lift pump 2 or the housing 1, thus storing a certain amount of water in the discharge pipe 3 for the backflushing operation of the backflushing device 4. This prevents sewage backflow from damaging the lift pump 2 and provides a stable water source for the backflushing device 4, ensuring its normal operation and improving the reliability of the device.

[0046] In some examples, a branch pipe 9 is connected to the discharge pipe 3. The branch pipe 9 is made of PVC or cast iron. One end of the branch pipe 9 is connected to the backflushing device 4, and the other end is connected to the discharge pipe 3 section located above the check valve 8. The connection is made with a sealed fitting to ensure no leakage.

[0047] For example, such as Figure 1As shown, when the booster pump 2 stops working and the check valve 8 closes, the water stored in the discharge pipe 3 flows into the backflushing device 4 through the branch pipe 9. When the water pressure in the backflushing device 4 reaches the set value, the backflushing nozzle 401 starts working. This ensures that the backflushing device 4 can obtain backflushing water in a timely manner, improves the backflushing effect, effectively prevents the accumulation of impurities at the inlet 201, and ensures smooth sewage discharge.

[0048] In some examples, a vent 10 is provided on the top of the housing 1, and the vent 10 is connected to the interior of the housing 1.

[0049] For example, such as Figure 1 As shown, the vent 10 ensures the internal air pressure balance of the tank 1, preventing air pressure issues from affecting sewage discharge. During sewage discharge, the air inside the tank 1 exchanges with the outside through the vent 10, maintaining stable internal air pressure in the tank 1.

[0050] In some examples, the top of the housing 1 is also provided with a cover plate 11, and a snap-fit ​​member 12 is provided on the cover plate 11. The cover plate 11 is snapped to the housing 1 by the snap-fit ​​member 12.

[0051] For example, such as Figure 1 and Figure 2 As shown, the cover plate 11 is made of stainless steel, and the snap-fit ​​element 12 is a stainless steel buckle installed on the edge of the cover plate 11. It engages with the slot on the top of the enclosure 1 via the snap-fit ​​element, facilitating easy opening and closing. When it is necessary to inspect or clean the equipment inside the enclosure 1, simply open the snap-fit ​​element 12 to lift the cover plate 11; after inspection or cleaning, lower the cover plate 11 and fasten the snap-fit ​​element 12. This facilitates the inspection and maintenance of the equipment inside the enclosure 1, improves work efficiency, and ensures the airtightness of the enclosure 1 to prevent odors from escaping.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the claims of this application.

Claims

1. An integrated sewage in-built lifting device for lifting and discharging the sewage into the municipal sewage main, characterized in that, The utility model relates to a sewage lifting device, comprising: a box (1) having a sewage inlet (101), the box (1) is used for containing sewage that enters through the sewage inlet (101); a lifting pump (2) arranged in the box (1), the lifting pump (2) has a water inlet (201) and a water outlet (202), the water inlet (201) is communicated with the inside of the box (1); a discharge pipe (3) having one end communicated with the water outlet (202) and the other end extended to the outside of the box (1) and communicated with a municipal sewage main pipe; a backflusher (4) arranged in the box (1) and communicated with the discharge pipe (3), the backflusher (4) has a backflushing nozzle (401) directed to the side of the water inlet (201), and the backflusher (4) is used for blowing away impurities located at the water inlet (201) through the backflushing nozzle (401).

2. The integrated wastewater insert lift device of claim 1, wherein, The box (1) is provided with a liquid level detector (5) electrically connected with the lifting pump (2), and the liquid level detector (5) is used for detecting the sewage liquid level height in the box (1) to transmit a signal for starting or stopping the lifting pump (2).

3. The integrated wastewater insert lift device of claim 2, wherein, The liquid level detector (5) has a high position detection point (501) and a low position detection point (502), the high position detection point (501) is used for limiting the highest position after the liquid level rises, and the low position detection point (502) is used for limiting the lowest position after the liquid level falls.

4. The integrated wastewater insert lift device of claim 1, wherein, The box (1) is detachably provided with a first filter (6) near the sewage inlet (101), and the first filter (6) is used for filtering dirt in sewage.

5. An integrated sewage built-in lifting device according to claim 4, characterized in that, The first filter (6) has a containing cavity (601) used for collecting solid dirt.

6. An integrated sewage built-in lifting device according to claim 4, characterized in that, The box (1) is provided with a second filter (7) between the first filter (6) and the lifting pump (2), and the second filter (7) is used for filtering sewage flowing to the lifting pump (2) again.

7. The integrated wastewater insert lift device of claim 1, wherein, The discharge pipe (3) is provided with a check valve (8) at the bottom, the check valve (8) is used for preventing sewage in the discharge pipe (3) from flowing back to the lifting pump (2) or the box (1) to store backflushing water for the backflusher (4) in the discharge pipe (3).

8. An integrated sewage built-in lifting device according to claim 7, characterized in that, The discharge pipe (3) is communicated with a branch pipeline (9), one end of the branch pipeline (9) is communicated with the backflusher (4), and the other end of the branch pipeline (9) is communicated with a pipe section of the discharge pipe (3) located at the upper part of the check valve (8).

9. The integrated wastewater insert lift device of claim 1, wherein, The box (1) is provided with a vent hole (10) communicated with the inside of the box (1).

10. The integrated wastewater insert lift device of claim 1, wherein, The box (1) is further provided with a cover plate (11), the cover plate (11) is provided with a clamping piece (12), and the cover plate (11) is clamped with the box (1) through the clamping piece (12).

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