Sewage lifting assembly

Abstract

The sewage lifting assembly comprises a water collecting tank, a filter device, a water inlet pipeline and a water outlet pipeline, a sewage lifting pump is arranged in the water collecting tank and connected with the filter device, a detachable filter screen and a backwashing pipeline are arranged on the filter device, the backwashing pipeline is connected with the water collecting tank, and the water inlet pipeline is communicated with the water outlet pipeline and connected with the filter device. And the water inlet pipeline and the water outlet pipeline are also provided with shutoff switches. According to the utility model, the filter device is arranged to filter impurities in sewage, the filter device adopts a detachable filter screen, is simple in structure and convenient to detach for cleaning, and is also provided with an electric valve, so that the intelligent control of backwashing can be realized, and the condition that the sewage is deposited at the bottom of the box is avoided; the sewage treatment performance and efficiency are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage lifting assembly. Background Art

[0002] With the prosperity and development of society, the construction of various underground buildings is increasing day by day. However, the corresponding sewage lifting facilities are relatively lagging behind. The usual practice is to set up a water collection tank underground, collect the sewage together, and then use a water pump to lift it to an outdoor underground sewage pump well, or discharge the sewage into an outdoor underground sewage pump well by gravity, and then use a sewage pump to lift it into a sewage inspection well near the pump well. These common practices have the following disadvantages: the filter device is designed inside the water storage tank, which is inconvenient to install and maintain, and it does not have a backwashing function. After long-term operation, the water storage tank needs to be cleaned regularly to prevent sedimentation. Utility Model Content

[0003] The purpose of the utility model is to provide a sewage lifting assembly in view of the defects and shortcomings of the prior art, which adopts a detachable filter screen, is easy to clean, improves filtration efficiency, reduces maintenance costs, and also adopts a backwashing pipe to backwash the bottom of the tank to prevent debris from accumulating at the bottom of the tank and clogging the water tank.

[0004] Based on this, the utility model provides a sewage lifting assembly, including a water collecting tank, a filtering device, an inlet pipe and an outlet pipe, the filtering device is located outside the water collecting tank, a sewage lifting pump is provided in the water collecting tank, the sewage lifting pump is connected to the filtering device, a removable filter screen and a backwashing pipe are provided on the filtering device, the backwashing pipe is connected to the water collecting tank, the inlet pipe is communicated with the outlet pipe and connected to the filtering device, and a shut-off switch is also provided on the inlet pipe and the outlet pipe.

[0005] As described above, the sewage lifting assembly, the filtering device is also provided with a shell, a cavity is provided inside the shell, the detachable filter is located in the cavity, a locking structure is installed on the shell, and the detachable filter is detachably connected to the outer shell through the locking structure.

[0006] In the sewage lifting assembly as described above, the locking structure is a latch seat, which is relatively arranged on both sides of the cavity, and the detachable filter can be inserted into the latch seat and fixedly locked with the shell.

[0007] As described above, the sewage lifting assembly, the latch seats placed on both sides of the cavity are connected to the outer shell, the upper part of the outer shell is also equipped with a cover plate, the removable filter is embedded in the latch seat, its top is close to the cover plate, and the lower part is in contact with the inner wall of the outer shell.

[0008] In the sewage lifting assembly as described above, the upper end of the detachable filter is designed as a transfer plate, and the transfer plate is perpendicular to the lower part of the detachable filter and is in close contact with the cover plate.

[0009] In the sewage lifting assembly as described above, the backwashing pipeline is also connected to the electric valve arranged on the water collecting tank, and the electric valve is close to the bottom of the water collecting tank. The electric valve is also provided with a backwashing pipeline that penetrates into the water collecting tank.

[0010] As described above, the sewage lifting assembly, the water inlet pipe includes a water inlet, a first water inlet pipe and a second water inlet pipe, the water outlet pipe is divided into a water outlet, a first water outlet pipe and a second water outlet pipe, the first water inlet pipe and the second water inlet pipe are branched from the water inlet to be connected with the first water outlet pipe and the second water outlet pipe respectively, and the first water outlet pipe and the second water outlet pipe are merged and connected at the water outlet.

[0011] In the sewage lifting assembly as described above, the shut-off switch on the water inlet pipe includes a first normally open check valve and a second normally open check valve, and the first normally open check valve and the second normally open check valve are positioned relative to each other, and the shut-off switch on the water outlet pipe includes a first normally closed check valve and a second normally closed check valve, and the first normally closed check valve and the second normally closed check valve are positioned relative to each other.

[0012] The sewage lifting assembly as described above, wherein the upper portion of the water collecting tank is provided with an air vent, and the air vent is also connected to the water inlet;

[0013] As described above, the sewage lifting assembly, the water collecting tank is provided with an emptying port along one side of the bottom.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The sewage lifting assembly of the utility model adopts a detachable filter screen, which is convenient for cleaning and maintenance. The dirt, impurities and particulate matter on the filter screen can be completely removed to keep the filter screen in good working condition. A backwashing pipe is also provided to effectively clean the dirt, sediment and blockages at the bottom of the water collecting tank by reverse flushing, thereby improving the operating efficiency. In addition, a shut-off switch is provided on the inlet and outlet water pipes to prevent the liquid from flowing back into the water inlet pipe by switching the valve, and the flow rate and flow of the fluid in the pipe can also be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of a sewage lifting assembly provided by an embodiment of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of a sewage lifting assembly provided by an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal side structure of the sewage lifting assembly provided by the embodiment of the utility model;

[0020] Figure 4 It is a side sectional view of a filtering device in a sewage lifting assembly provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0023] like Figures 1 to 4 As shown, the sewage lifting assembly of the utility model embodiment includes a water collecting tank 1, a filtering device 2, an inlet pipe 3 and an outlet pipe 4, the filtering device 2 is located outside the water collecting tank 1, a sewage lifting pump 5 is provided in the water collecting tank 1, the sewage lifting pump 5 is connected to the filtering device 2, a detachable filter screen 21 and a backwashing pipe 22 are provided on the filtering device 2, the backwashing pipe 22 is connected to the water collecting tank 1, the inlet pipe 3 is communicated with the outlet pipe 4 and connected to the filtering device 2, and a shut-off switch 6 is also provided on the inlet pipe 3 and the outlet pipe 4. In this embodiment, the filtering device 2 is arranged outside the water collecting tank 1, and can actually be arranged inside the water collecting tank 1. In comparison, it is visible to the naked eye and more intuitive when it is arranged outside. The above-mentioned components are connected to each other and can also be arranged in an integrated manner, but the integrated manner is not convenient for disassembly, maintenance and cleaning, and the service life of the equipment is short.

[0024] In the example of the utility model, the filtering device 2 is also provided with a shell 23, a cavity 24 is provided inside the shell 23, the detachable filter screen 21 is located in the cavity 24, a locking structure 25 is installed on the shell 23, and the detachable filter screen 21 is detachably connected to the shell 23 through the locking structure 25. The removable filter 21 can be easily removed from the filtering device 2 for convenient cleaning and maintenance. By removing the filter, the dirt, impurities and particulate matter on the filter can be thoroughly removed to keep the filter in good working condition. Since the removable filter is easy to clean, the frequency of replacing the filter and the time and labor required for maintenance can be reduced. Compared with a fixed filter, the removable filter can save maintenance costs and extend the service life of the filter. A clean filter can provide a better filtering effect. By regularly cleaning the removable filter 21, it can be ensured that the filter always remains unobstructed, the filtering efficiency is improved, and suspended matter, particulate matter and other pollutants are effectively removed. Moreover, the design structure of the removable filter 21 is simple and flexible. This flexibility makes the removable filter 21 suitable for a variety of different filtering equipment and systems, and can meet the filtering requirements of different fields.

[0025] In the example of the utility model, the locking structure 25 is a latch seat, which is relatively arranged on both sides of the cavity 24, and the removable filter 21 can be inserted into the latch seat and fixedly locked with the shell 23. The latch seat is simple to use, compact in structure, and easy to install. The removable filter 21 can be easily inserted into and removed from the latch seat, thereby achieving the fixation and connection of mechanical parts. When it is necessary to disassemble or replace parts, the disassembly operation can be completed by simply removing the latch, which is convenient and quick; the stability and safety of mechanical parts can be ensured. The latch seat is usually designed as a close-fitting structure. After the removable filter is inserted, the parts can be effectively fixed to prevent them from loosening or falling off. The latch seat is a relatively low-cost connection method, suitable for many application scenarios. It does not require complex equipment or tools, and has low maintenance costs, so it is economical and practical in practical applications.

[0026] In the example of the utility model, the latch seats placed on both sides of the cavity 24 are connected to the housing 23, and a cover plate 26 is also installed on the upper part of the housing 23. The detachable filter 21 is embedded in the latch seat, with its top close to the cover plate 26 and its bottom in contact with the inner wall of the housing 23. The detachable filter 21 is fixed by the force of its top, latch seat and bottom, and the three forces are combined to make it more stable and reduce the possibility of loosening; the cover plate 26 used in this embodiment uses fasteners such as screws to firmly fix it on the housing 23, ensuring its stable position, no loosening or shaking, and also ensuring safety and sealing.

[0027] Furthermore, the upper end of the detachable filter 21 is designed as a transfer piece 21a, and the transfer piece 21a is perpendicular to the lower part of the detachable filter 21 and is close to the cover plate 26. The upper end of the detachable filter 21 may not need the transfer piece 21a. The use of the transfer piece 21a can increase the flexibility of the mechanical structure and realize multiple combinations; the use of the transfer piece 21a can reduce the manufacturing cost of the mechanical structure. When it is necessary to connect components of different specifications, the use of the transfer piece 21a can avoid the situation of replacing the entire component, thereby saving costs; the use of the transfer piece 21a can facilitate the maintenance of the mechanical structure. When it is necessary to replace a damaged component, only the transfer piece 21a needs to be replaced, and there is no need to replace the entire device, thereby reducing maintenance costs; the use of the transfer piece 21a can save space inside the mechanical structure. When it is necessary to connect multiple components, the use of the transfer piece can connect them together, thereby reducing the size of the occupied space.

[0028] Specifically, the backwash pipe 22 is also connected to the electric valve 27 provided on the water collecting tank 1, and the electric valve 27 is close to the bottom of the water collecting tank 1, and the electric valve 27 is also provided with a backwash pipeline that penetrates into the water collecting tank 1. The backwash pipe 22 is connected to the electric valve 27 on the water collecting tank 1, and then connected to the backwash pipeline provided on the electric valve 27. When the water pump is started, a part of the sewage reversely flushes the bottom of the water collecting tank 1 through the pipeline, which can effectively clean the dirt, sediment and blockage at the bottom, improve the operation efficiency, and the electric valve 27 can be set to adjust the valve for backwashing according to the pressure in the pipeline to achieve intelligent control.

[0029] like Figure 1 As shown, in the example of the utility model, the water inlet pipe 3 includes a water inlet 31, a first water inlet pipe 32 and a second water inlet pipe 33, and the water outlet pipe 4 is divided into a water outlet 41, a first water outlet pipe 42 and a second water outlet pipe 43. The first water inlet pipe 32 and the second water inlet pipe 33 are branched from the water inlet 31 to be connected with the first water outlet pipe 42 and the second water outlet pipe 43 respectively, and the first water outlet pipe 42 and the second water outlet pipe 43 are connected at the water outlet 41. That is, the water inlet pipe and the water outlet pipe of the sewage lifting assembly are set as two independent systems, and are arranged in parallel during design. In this way, in normal operation, the two systems can run simultaneously, one of which is the main system and the other is the backup system. When the main system fails or needs maintenance, the backup system will automatically take over and maintain the normal operation of the sewage lifting pump.

[0030] In the example of the utility model, the shutoff switch 6 on the water inlet pipe 3 includes a first normally open check valve 61 and a second normally open check valve 62, and the first normally open check valve 61 and the second normally open check valve 62 are located opposite to each other. The shutoff switch 6 on the water outlet pipe 4 includes a first normally closed check valve 63 and a second normally closed check valve 64, and the first normally closed check valve 63 and the second normally closed check valve 64 are located opposite to each other. By controlling the check valve to switch the connection between the water inlet pipe and the water outlet pipe, when the main pipe fails or needs maintenance, the spare pipe can be connected to the sewage lifting pump by switching the check valve to realize the standby start. This design ensures the reliability and stability of the entire sewage lifting assembly.

[0031] In addition, in the example of the utility model, the upper part of the water collecting tank 1 is provided with an air vent 7, and the air vent 7 is also connected to the water inlet 31. The air vent 7 can keep the air pressure inside and outside the water collecting tank balanced. When sewage enters or is discharged from the water collecting tank 1, the volume change will cause the change of the internal pressure. The air vent 7 can allow air to freely enter and exit the water collecting tank 1 to balance the pressure and avoid negative pressure or excessive positive pressure, thereby ensuring that the liquid in the water collecting tank 1 can flow normally; when sewage enters the water collecting tank 1, since the air cannot be discharged smoothly, a closed state is formed, resulting in the situation that the sewage cannot flow in. The air vent 7 can provide a way for air to enter and avoid the occurrence of water sealing.

[0032] In the example of the utility model, the water collecting tank 1 is provided with an emptying port 8 along one side of the bottom. The water collecting tank 1 is usually used to collect sewage. If it is not cleaned and maintained for a long time, a large amount of impurities will accumulate. The emptying port 8 can discharge the sewage in the water collecting tank 1, and at the same time, it can also remove impurities to ensure the cleanliness and hygiene of the water collecting tank; when maintaining or replacing the equipment, the sewage in the water collecting tank 1 needs to be emptied first to avoid the splashing of sewage and damage to the equipment; if these sewage are not discharged for a long time, it is easy to produce unpleasant odors and spread to the surrounding environment. The emptying port 8 can discharge the liquid in time to prevent the spread of odors from affecting the surrounding environment and human health.

[0033] The working principle of the sewage lifting assembly of the utility model embodiment is roughly as follows:

[0034] The mixed sewage flows into the filter device through the water inlet. A shut-off switch is provided on the water inlet pipe to prevent sewage backflow. The filter device adopts a detachable filter screen, which has a super separation effect and is easy to disassemble and clean. After separation, the sewage flows into the water collecting tank. When the sewage reaches the starting liquid level, the sewage lifting pump in the water collecting tank starts processing, and then the pressure of the outlet water is used to backwash the debris and discharge it through the outlet pipe. At the same time, the backwash pipe on the filter device can backwash the debris in the water collecting tank to prevent the debris from accumulating at the bottom of the tank.

[0035] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made by ordinary technicians in the field to the technical solution of the present invention should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A sewage lifting assembly, comprising a water collecting tank (1), a filtering device (2), a water inlet pipe (3) and a water outlet pipe (4), characterized in that: The filtering device (2) is located outside the water collecting tank (1), a sewage lifting pump (5) is provided in the water collecting tank (1), the sewage lifting pump (5) is connected to the filtering device (2), a detachable filter screen (21) and a backwashing pipe (22) are provided on the filtering device (2), the backwashing pipe (22) is connected to the water collecting tank (1), the water inlet pipe (3) is communicated with the water outlet pipe (4) and is connected to the filtering device (2), and a cut-off switch (6) is also provided on the water inlet pipe (3) and the water outlet pipe (4).

2. The sewage lifting assembly according to claim 1, characterized in that: The filtering device (2) comprises a housing (23), a cavity (24) is provided inside the housing (23), the detachable filter screen (21) is located in the cavity (24), a locking structure (25) is provided on the housing (23), and the detachable filter screen (21) is detachably connected to the housing (23) via the locking structure (25).

3. The sewage lifting assembly according to claim 2 is characterized in that: The locking structure (25) is a latch seat, which is arranged on two sides of the cavity (24) opposite to each other, and the detachable filter (21) can be inserted into the latch seat and fixedly locked with the housing (23).

4. The sewage lifting assembly according to claim 3 is characterized in that: The latch seats disposed on both sides of the cavity (24) are connected to the housing (23), and a cover plate (26) is also provided on the upper portion of the housing (23). The detachable filter screen (21) is embedded in the latch seats, with its top abutting against the cover plate (26) and its lower portion abutting against the inner wall of the housing (23).

5. The sewage lifting assembly according to claim 4 is characterized in that: The upper end of the detachable filter screen (21) is designed as an adapter plate (21a), and the adapter plate (21a) is perpendicular to the lower part of the detachable filter screen (21) and is in close contact with the cover plate (26).

6. The sewage lifting assembly according to claim 1, characterized in that: The backwash pipeline (22) is also connected to an electric valve (27) provided on the water collecting tank (1), and the electric valve (27) is close to the bottom of the water collecting tank (1). The electric valve (27) is also provided with a backwash pipeline extending deep into the water collecting tank (1).

7. The sewage lifting assembly according to claim 1, characterized in that: The water inlet pipe (3) comprises a water inlet (31), a first water inlet pipe (32) and a second water inlet pipe (33); the water outlet pipe (4) is divided into a water outlet (41), a first water outlet pipe (42) and a second water outlet pipe (43); the first water inlet pipe (32) and the second water inlet pipe (33) are branched from the water inlet (31) to communicate with the first water outlet pipe (42) and the second water outlet pipe (43) respectively; the first water outlet pipe (42) and the second water outlet pipe (43) are joined and communicated with each other at the water outlet (41).

8. The sewage lifting assembly according to claim 1, characterized in that: The shut-off switch (6) on the water inlet pipe (3) comprises a first normally open check valve (61) and a second normally open check valve (62), wherein the first normally open check valve (61) and the second normally open check valve (62) are positioned opposite to each other, and the shut-off switch (6) on the water outlet pipe (4) comprises a first normally closed check valve (63) and a second normally closed check valve (64), wherein the first normally closed check valve (63) and the second normally closed check valve (64) are positioned opposite to each other.

9. The sewage lifting assembly according to claim 7, characterized in that: The water collecting box (1) is provided with a vent hole (7) at the top, and the vent hole (7) is also connected to the water inlet (31).

10. The sewage lifting assembly according to claim 1, characterized in that: The water collecting tank (1) is provided with a drain port (8) along one side of the bottom.

Images