Sewage lifter

Abstract

The sewage lifter comprises a hollow box body, a sewage pump and a check valve, the sewage pump and the check valve are arranged in the box body, the box body is provided with a water inlet, a water outlet, a water drainage port and a liquid level meter, a volute is arranged in the water outlet, a suction hole communicated with the interior of the box body is formed in the volute, and the check valve is arranged in the box body. An impeller of the sewage pump is rotationally arranged in the volute, the check valve is arranged at the top end of the water outlet, the side face of the volute is communicated with the water outlet through a pipeline, and the volute, the pipeline and the box body are integrally formed. The water purifier is simple in structure, the volute, the pipeline and the box body are integrally formed, connection is reduced, the overall sealing performance is good, sewage leakage is avoided, and the family environment of a user is protected.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a wastewater lifting station. Background Technology

[0002] Sewage lifting stations are mainly used in locations such as basements, ships, and villas where sewage cannot be discharged by gravity, such as far from drainage risers or in areas with poor drainage conditions. They collect and treat domestic wastewater from bathrooms, especially when the toilet or sink is lower than the city's drainage pipes. The sewage lifting station is needed to raise the sewage to a certain height before discharging it into the city's drainage system. A check valve is installed between the sewage lifting station and the external drainage pipe to prevent backflow. However, a separate connecting pipe is required between the check valve and the sewage pump. The limited space inside the housing makes assembly inconvenient, and the connection between the pipe and the housing poses a risk of leakage, potentially causing insufficient pressure in the sewage lifting station. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to provide a sewage lifting device to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This application discloses a sewage lifting device, including a hollow housing, a sewage pump and a check valve disposed within the housing. The housing has an inlet, an outlet, a drain outlet and a level gauge. A volute is disposed inside the outlet, and a suction hole communicating with the interior of the housing is disposed within the volute. The impeller of the sewage pump is rotatably disposed within the volute. The check valve is disposed at the top of the drain outlet. The side of the volute is connected to the drain outlet via a pipe. The volute and the pipe are integrally formed with the housing.

[0006] Furthermore, in the aforementioned sewage lifting device, the inner wall of the tank body has a protruding support column connected to the pipeline.

[0007] Furthermore, in the aforementioned sewage lifting device, the bottom surface of the tank is an inclined or curved surface, and tilts or bends directly below the volute.

[0008] Furthermore, in the aforementioned sewage lifting device, the bottom of the tank is provided with several supporting feet, and the bottom of the inclined or curved surface does not protrude beyond the bottom surface of the supporting feet.

[0009] Furthermore, in the aforementioned sewage lifting device, the inlet is located on the top and / or side and / or rear of the tank body.

[0010] Furthermore, in the aforementioned sewage lifting device, the level gauge includes an air pipe, a mounting cover, and a level pipe connected in sequence. The mounting cover is threaded onto the top surface of the housing, and the level pipe is disposed inside the housing and connected to the air pipe.

[0011] Furthermore, in the aforementioned sewage lifting device, the outlet is equipped with a backflush pipe connected to the tank body.

[0012] Furthermore, the aforementioned sewage lifting station also includes a float device.

[0013] Furthermore, in the aforementioned sewage lifting device, the check valve includes a valve body detached from the housing, a valve disc hinged to the valve body, and a valve cover detached from the valve body. The valve body includes a first flange, an axial pipe, and a second flange arranged sequentially. The first flange is detached from the housing. A radial pipe is provided on the side of the axial pipe. The valve cover is detached from the open end of the radial pipe. The first flange, the axial pipe, the second flange, and the radial pipe are integrally formed.

[0014] Furthermore, in the aforementioned sewage lifting device, a support surface for supporting the valve disc is provided inside the radial pipe, the support surface is inclined, and the central hole of the axial pipe penetrates the support surface.

[0015] Compared with the prior art, the advantages of this utility model are as follows: the sewage lifting device is simple and practical, the volute and pipe are integrally formed with the tank body, reducing connections, ensuring the pressure of sewage lifting, and providing good overall sealing to prevent sewage leakage and protect the user's home environment; the bottom surface of the tank body is a slope or curved surface, and tilts or bends directly below the volute, that is, the lowest point of the tank body bottom surface is located directly below the volute, and sewage automatically collects after entering the tank body; the check valve body is integrally formed, reducing the risk of leakage; the backflushing pipe reduces the formation of sediment, improves the pump's operating environment, and extends its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 The diagram shown is a structural schematic of the sewage lifting device in a specific embodiment of this utility model.

[0018] Figure 2 The diagram shown is a structural schematic of the pipe in a specific embodiment of this utility model.

[0019] Figure 3 The diagram shown is a schematic representation of the installation of the level gauge in a specific embodiment of this utility model.

[0020] Figure 4 The diagram shown is a structural schematic of the sewage pump in a specific embodiment of this utility model.

[0021] Figure 5 The diagram shown is a structural schematic of the sewage pump housing in a specific embodiment of this utility model.

[0022] Figure 6 The diagram shown is a structural schematic of the check valve in a specific embodiment of this utility model.

[0023] Figure 7 The diagram shown is a cross-sectional view of the check valve in a specific embodiment of this utility model.

[0024] Figure 8 The diagram shown is a schematic representation of the valve disc installation in a specific embodiment of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

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

[0028] Reference Figures 1 to 8 As shown in the figure, a sewage lift pump includes a hollow box body 1, a sewage pump 2 and a check valve 3 arranged on the box body 1. The box body 1 is provided with a water inlet 11, a water outlet, a drainage port and a liquid level gauge 4. A volute 12 is arranged in the water outlet. A suction hole communicating with the inside of the box body 1 is arranged at the bottom of the volute 12. The impeller of the sewage pump 2 is rotatably arranged in the volute 12. The check valve 3 is arranged at the top end of the drainage port. The side surface of the volute 12 is communicated with the drainage port through a pipeline 13. The volute 12 and the pipeline 13 are integrally formed with the box body 1.

[0029] In this technical solution, the volute and the pipeline are integrally formed with the box body, reducing connections, ensuring the pressure for sewage lifting, having good overall sealing performance, avoiding sewage leakage, and protecting the user's home environment.

[0030] Exemplarily, referring to Figure 2 as shown in the figure, a support column 14 connecting to the pipeline protrudes from the inner wall of the box body 1.

[0031] In this technical solution, the support column is integrally formed with the box body and the pipeline, improving the stability of pipeline fixation.

[0032] Exemplarily, referring to Figure 2 and Figure 3 as shown in the figure, the bottom surface of the box body 1 is an inclined surface or a curved surface and slopes or curves downward directly below the volute 12.

[0033] In this technical solution, when the sewage lift pump is in use, the box body is placed horizontally, and the lowest point of the bottom surface of the box body is directly below the volute. Sewage automatically converges after entering the box body.

[0034] Exemplarily, referring to Figure 2 and Figure 3 as shown in the figure, several support feet are arranged at the bottom of the box body 1, and the bottom of the inclined surface or the curved surface does not protrude beyond the bottom surface of the support feet.

[0035] In this technical solution, the bottom of the inclined surface or the curved surface is flush with the bottom surface of the support feet, without interfering with the placement of the box body, and can also provide support for the bottom wall of the box body.

[0036] Exemplarily, referring to Figure 1 as shown in the figure, the water inlet 11 is arranged on the top surface and / or side surface and / or rear surface of the box body 1.

[0037] In this technical solution, the water inlet is in the form of a water inlet pipe, which facilitates connection with external sewage pipes. The water inlet pipe can be integrally formed with the shell or welded afterward. That is, multiple water inlet pipes are respectively set on the left and right sides and the rear of the box (the side away from the sewage pump). Multiple water inlet pipes can be used individually or multiple pipes can be used simultaneously, which can be adjusted on-site according to the actual working conditions. In the actual production process, the outer end of the water inlet pipe is sealed with a cap, which is detachable or integrally formed with the water inlet pipe. The cap of the required water inlet pipe can be removed or punctured on-site according to the actual working conditions.

[0038] For example, see Figure 3 As shown, the level gauge 4 includes an air pipe 41, a mounting cover 42, and a level pipe 43 connected in sequence. The mounting cover 42 is threaded onto the top surface of the housing 1, and the level pipe 43 is located inside the housing 1 and connected to the air pipe 41.

[0039] In this technical solution, the air pipe is connected to a pressure sensor of an external controller. The controller is a conventional microcontroller or PLC, and the pressure sensor is a conventional micro pressure sensor. As more sewage enters the tank from the inlet, the sewage level inside the tank gradually rises, compressing the air in the level tube. This causes the pressure sensor to detect an increase in the gas pressure inside the tank. The micro pressure sensor then collects this pressure signal and transmits it to the controller. When the pressure signal exceeds a set value, the controller activates the sewage pump to discharge the sewage from the tank. After the sewage is discharged, the gas volume inside the tank increases, and the pressure signal value changes accordingly. The micro-pressure sensor transmits this signal value to the controller, which then controls the sewage pump to stop working. This cycle continues, ensuring that the sewage lift station can operate stably and normally. A standard sealing ring is installed between the mounting cover and the tank body. The top of the mounting cover has a standard pipe connector for connecting the gas pipe, and the top of the liquid level pipe is embedded in the bottom of the mounting cover. The top of the tank body also has an inspection port with a screw cap, which can also be used as a mounting cover for a level gauge to prevent errors.

[0040] For example, see Figures 1 to 5 As shown, the outlet is equipped with a backflush pipe 5 connected to the tank 1.

[0041] In this technical solution, a through hole 211 is machined on the motor housing 21 of the sewage pump. The through hole is connected to the inside of the volute. The outer end of the through hole is connected to a backflushing pipe through a conventional pipe joint. The other end of the backflushing pipe is connected to the tank. When the sewage pump is working, high-pressure water enters the tank through the backflushing pipe to flush the inner wall of the tank, reduce the formation of sediment, improve the pump's operating environment, and extend its service life. In addition, the backflushing pipe can also discharge the gas inside the sewage pump to avoid the occurrence of air binding.

[0042] For example, see Figure 1 and Figure 3 As shown, it also includes a float device 6.

[0043] In this technical solution, the float device has a conventional structure and is connected to an external controller as a fault-prevention device for the level gauge. When the pressure sensor fails, the float device monitors the liquid level and the controller starts the sewage pump in time to prevent sewage from overflowing.

[0044] For example, see Figure 1 and Figures 6 to 8 As shown, the check valve 3 includes a valve body 31 that is disassembled and installed in the housing 1, a valve disc 32 that is hinged in the valve body 31, and a valve cover 33 that is disassembled and installed in the valve body 31. The valve body 31 includes a first flange, an axial tube, and a second flange arranged in sequence. The first flange is disassembled and installed in the housing 1. A radial tube is provided on the side of the axial tube. The valve cover 33 is disassembled and installed at the open end of the radial tube. The first flange, the axial tube, the second flange, and the radial tube are integrally formed.

[0045] In this technical solution, nuts are pre-installed inside the housing. The sewage pump and check valve are fixed to the housing by bolts and corresponding nuts, and sealing rings are installed between the sewage pump and check valve and the housing. The first flange, axial pipe, second flange and radial pipe of the valve body are integrally formed, reducing connections, improving assembly efficiency and reducing leakage risk. The open end of the radial pipe is integrally formed with a third flange. The valve cover is installed and removed from the third flange by bolts. Conventional sealing rings are installed between the valve cover and the third flange to ensure sealing. The axial pipe and radial pipe are arranged perpendicular to each other, and the open end of the radial pipe serves as the installation port and maintenance port of the valve disc.

[0046] For example, see Figure 7 and Figure 8 As shown, a support surface for supporting the valve disc 32 is provided inside the radial tube. The support surface is inclined, and the central hole of the axial tube passes through the support surface.

[0047] In this technical solution, the inner wall of the axial pipe is stepped, and the top of the step is inclined to the side where the valve cover is located, forming a support surface for supporting the valve disc. The support surface extends to the opening end of the radial pipe. The valve disc includes a disc-shaped disc body, a connecting part connected to its side radially along the disc body, and a hinge shaft connected to the end of the connecting part away from the disc body. A disc-shaped or annular metal ring is embedded in the disc body to improve the strength of the disc body. The length of the hinge shaft is greater than the width of the connecting part. A hinge groove is recessed on the side of the support surface near the opening end of the radial pipe. The hinge shaft is embedded in the hinge groove. A connecting groove corresponding to the connecting part is opened at the top of the hinge groove. The valve disc is inclined, making it easier for sewage to flush open the valve disc.

[0048] In summary, this sewage lifting station is simple and practical. The volute and pipes are integrally molded with the tank body, reducing connections, ensuring the pressure for sewage lifting, and providing good overall sealing to prevent sewage leakage and protect the user's home environment. The bottom surface of the tank body is sloping or curved, tilting or bending directly below the volute, meaning the lowest point of the tank body's bottom surface is directly below the volute, allowing sewage to automatically collect after entering the tank. The check valve body is integrally molded, reducing the risk of leakage. The backflush pipe reduces sediment formation, improves the pump's operating environment, and extends its service life.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A sewage lifting station, characterized in that, The device includes a hollow housing, a sewage pump, and a check valve housed within the housing. The housing has an inlet, an outlet, a drain outlet, and a level gauge. A volute is housed inside the outlet, and the volute has a suction hole that connects to the interior of the housing. The impeller of the sewage pump is rotatably mounted inside the volute. The check valve is located at the top of the drain outlet. The side of the volute is connected to the drain outlet via a pipe. The volute and the pipe are integrally formed with the housing.

2. A sewage ejector as claimed in claim 1, characterised in that: The inner wall of the box has protruding support columns that are connected to the pipe.

3. The sewage ejector of claim 1, wherein: The bottom surface of the box is a slope or curved surface, and it tilts or bends directly below the volute.

4. A sewage ejector as claimed in claim 3, characterised in that: The bottom of the box is provided with several support feet, and the bottom of the inclined or curved surface does not protrude from the bottom surface of the support feet.

5. The sewage ejector of claim 1, wherein: The water inlet is located on the top and / or side and / or rear of the tank.

6. The sewage ejector of claim 1, wherein: The level gauge includes an air pipe, a mounting cover, and a level pipe connected in sequence. The mounting cover is threaded onto the top surface of the housing, and the level pipe is disposed inside the housing and connected to the air pipe.

7. The sewage ejector of claim 1, wherein: The outlet is equipped with a backflush pipe that connects to the tank body.

8. The sewage ejector of claim 1, wherein: It also includes a float device.

9. The sewage ejector of claim 1, wherein: The check valve includes a valve body that is disassembled and installed in the housing, a valve disc that is hinged to the valve body, and a valve cover that is disassembled and installed in the valve body. The valve body includes a first flange, an axial tube, and a second flange arranged in sequence. The first flange is disassembled and installed in the housing. A radial tube is provided on the side of the axial tube. The valve cover is disassembled and installed at the open end of the radial tube. The first flange, the axial tube, the second flange, and the radial tube are integrally formed.

10. A sewage ejector as claimed in claim 9, characterised in that: The radial tube is provided with a support surface for supporting the valve disc. The support surface is inclined, and the central hole of the axial tube passes through the support surface.

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