Self-cleaning sewage submersible pump

Abstract

The application provides a self-flushing sewage and dirt submersible electric pump, and belongs to the technical field of water pumps. The self-flushing sewage and dirt submersible electric pump solves the problem of unsatisfactory sewage discharge effect of the existing submersible electric pump. The self-flushing sewage and dirt submersible electric pump comprises a motor, a pump body and an impeller. The pump body has a water inlet end and a water outlet end. The impeller is located in the pump body and is driven by the motor to rotate. The water outlet end is connected with a communication pipe. The water inlet end is provided with a spray head. The two ends of the communication pipe are connected with the water outlet end and the spray head respectively. The spray head faces the outside of the water inlet end. The self-flushing sewage and dirt submersible electric pump has the advantages of being capable of flushing the sludge deposited outside the water inlet end and having a good sewage discharge effect.

Description

Technical Field

[0001] This invention belongs to the field of water pump technology, and relates to a sewage pump, particularly a self-flushing submersible sewage and waste pump. Background Technology

[0002] As a power tool for pumping sewage, sewage pumps are essentially centrifugal impurity pumps. Currently, sewage pumps are mainly divided into two types: submersible and dry. The most commonly used submersible type is the QW submersible sewage pump, while the most common dry sewage pumps are the W-type horizontal sewage pump and the WL-type vertical sewage pump.

[0003] For example, a sewage pump disclosed in Chinese patent literature (application number: 201810688188.1) includes a bearing housing, a pump casing on the side of the bearing housing, a sewage pipe at the bottom of the pump casing, a water receiving trough below the outlet of the sewage pipe, a water inlet on the side of the pump casing, and a water outlet at the top of the pump casing. A pair of bearings are installed inside the bearing housing, and a pump shaft is rotatably mounted within the pair of bearings. One end of the pump shaft extends into the pump casing, and the other end of the pump shaft is connected to the motor shaft via a coupling. An impeller is installed at the end of the pump shaft extending into the pump casing. The pump also includes a coupling safety sleeve, with the coupling located inside the coupling safety sleeve. However, this sewage pump lacks a structure for flushing away sediment deposited outside the inlet, resulting in unsatisfactory sewage discharge performance. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a self-flushing submersible sewage pump that can flush away sludge deposited outside the inlet and has a good sewage discharge effect.

[0005] The objective of this invention can be achieved through the following technical solution: a self-flushing submersible sewage pump, comprising a motor, a pump body, and an impeller, wherein the pump body has an inlet end and an outlet end, the impeller is located within the pump body and the motor drives the impeller to rotate, characterized in that the outlet end is connected to a connecting pipe, the inlet end is provided with a nozzle, the two ends of the connecting pipe are respectively connected to the outlet end and the nozzle, and the nozzle faces outward from the inlet end.

[0006] During operation, the impeller is driven by a motor to rotate, transporting water from the inlet to the outlet. One end of the connecting pipe is connected to the outlet, and the other end is connected to a nozzle facing outwards from the inlet. During operation, high-pressure water flows from the outlet through the connecting pipe and nozzle to flush the sludge outside the inlet, effectively transporting the sludge and achieving good sewage discharge.

[0007] In the aforementioned self-flushing submersible sewage pump, a connecting body is fixedly connected to the middle of the inlet end, and the other end of the connecting pipe is connected to the connecting body. The number of nozzles is 3 to 6, and they are evenly distributed on the connecting body. By setting up the connecting body connecting 3 to 6 nozzles, the system has the advantages of simple structure and good sludge spraying effect.

[0008] In the aforementioned self-flushing submersible sewage pump, the inlet end is cylindrical and fixedly connected to the pump body, and the connecting body is annular and coaxially arranged with the outlet end. The annular shape of the connecting body facilitates the flow of water through the inlet end.

[0009] In the aforementioned self-flushing submersible sewage pump, a cylindrical connecting body is fixedly connected to the middle of the inlet end. A rotating body with a hollow center is axially fixedly connected to the middle of the connecting body. The rotating body is connected to the connecting body. The motor shaft is coaxially arranged with and fixedly connected to the rotating body. A nozzle is fixedly connected to the lower side of the rotating body. The rotating body is driven to rotate by the shaft, which in turn drives the nozzle to rotate and spray, flushing the sludge on the outside of the inlet end. This method has the advantages of a large spray area and good sludge removal effect.

[0010] In the aforementioned self-flushing submersible sewage pump, the nozzle is flat and includes a body with a cavity in the middle. The inner end of the body is a water inlet chamber, and the outer end of the body has a spray nozzle. The cavity of the body has symmetrically arranged flow dividers. The inner end of the flow divider forms a first flow channel, and the outer end of the flow divider forms a second flow channel with an inlet and an outlet on the corresponding inner sidewall of the body. The cavity of the body has an auxiliary flow divider located between the lower side of the flow divider and the spray nozzle of the body. The auxiliary flow divider is symmetrically arranged about the axis of the first flow channel, and the outlet of the second flow channel faces the corresponding side of the auxiliary flow divider. During operation, the connecting pipe is connected to the water inlet chamber of the main body. The water flow from the connecting pipe enters the water inlet chamber of the main body and flows towards the spray nozzle after passing through two flow channels, namely flow channel one and flow channel two. The auxiliary flow channel splits the water flow through flow channel one to both sides. After splitting, the water flow oscillates with the water flow through the corresponding flow channel two. Then, the water flow flows towards the spray nozzle on the lower side and oscillates again. The oscillated water flow is discharged through the spray nozzle. Through the two oscillations of the water flow, it has a good spraying effect and can effectively flush out sludge, thus improving the sewage discharge efficiency.

[0011] In the aforementioned self-flushing submersible sewage pump, the inner wall of the main body is symmetrically provided with protruding guide protrusions. The upper sidewall of the guide protrusion and the outer sidewall of the corresponding auxiliary fluid divider form the aforementioned flow channel two. The flow channel two formed by the guide protrusion and the auxiliary fluid divider has the advantages of good flow guiding effect and relatively compact structure.

[0012] In the aforementioned self-flushing submersible sewage pump, the auxiliary distributor is T-shaped with its central convex part facing the first fluid channel. The T-shape of the auxiliary distributor allows for a more uniform distribution of the water flow through the first fluid channel, resulting in a more balanced water flow on both sides of the auxiliary distributor.

[0013] In the aforementioned self-flushing submersible sewage pump, a fixed base is provided in the middle of the inlet end, and the nozzle passes through the fixed base and is threadedly connected to it. The nozzle and the fixed base are coaxially arranged, and the nozzle and the fixed base are threadedly connected, which has the advantages of simple structure and good connection effect.

[0014] In the aforementioned self-flushing submersible sewage pump, the other end of the connecting pipe is provided with a spherical groove, and the inner end of the nozzle has a spherical connector that is embedded in the spherical groove. The spherical connector being embedded in the spherical groove facilitates adjustment of the nozzle's water outlet direction, offering the advantage of ease of use.

[0015] In the aforementioned self-flushing submersible sewage pump, a gate valve is installed on the connecting pipe. By installing this gate valve, the connecting pipe can be manually closed, offering the advantage of ease of use.

[0016] In the aforementioned self-flushing submersible sewage pump, the gate valve is an electric gate valve. The electric gate valve is connected to a control system, which controls its opening and closing, offering the advantage of ease of use.

[0017] Compared with existing technologies, this self-flushing submersible sewage pump has the following advantages:

[0018] 1. Since one end of the connecting pipe is connected to the water outlet and the other end of the connecting pipe is connected to a nozzle facing the outside of the water inlet, when working, high-pressure water flows from the water outlet through the connecting pipe and through the nozzle to flush the sludge outside the water inlet, thereby transporting the sludge and achieving a good sewage discharge effect.

[0019] 2. The rotating body is driven by the rotating shaft, which in turn drives the nozzle to rotate and spray, flushing the sludge on the outside of the water inlet. It has the advantages of large spray area and good cleaning effect.

[0020] 3. The water flow through the nozzle is agitated twice, resulting in a better spraying effect. This effectively flushes away sludge and improves the sewage discharge efficiency.

[0021] 4. The spherical connector is embedded in the spherical groove, which makes it easy to adjust the water outlet direction of the nozzle, and has the advantage of being easy to use. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of Embodiment 1 of a self-flushing submersible sewage and waste pump.

[0023] Figure 2 This is a cross-sectional schematic diagram of the connecting pipe and nozzle in Embodiment 1.

[0024] Figure 3 This is a cross-sectional schematic diagram of Embodiment 2 of a self-flushing submersible sewage pump.

[0025] Figure 4 This is a cross-sectional schematic diagram of Embodiment 3 of a self-flushing submersible sewage pump.

[0026] Figure 5 yes Figure 4 A magnified schematic diagram of part A.

[0027] In the diagram, 1. Motor; 2. Pump body; 2a. Inlet; 2b. Outlet; 3. Impeller; 4. Connecting pipe; 4a. Spherical groove; 5. Connecting body; 6. Rotating body; 7. Nozzle; 7a. Main body; 7b. Spray nozzle; 7c. Diverter; 7d. Flow channel one; 7e. Flow channel two; 7f. Auxiliary diverter; 7g. Guide protrusion; 7h. Spherical connector; 8. Fixed base; 9. Electric gate valve. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] Example 1

[0030] like Figure 1 As shown, a self-flushing submersible sewage pump includes a motor 1, a pump body 2, and an impeller 3. The pump body 2 has an inlet end 2a and an outlet end 2b. The impeller 3 is located inside the pump body 2 and the motor 1 drives the impeller 3 to rotate. The outlet end 2b is connected to a connecting pipe 4, and an electric gate valve 9 is provided on the connecting pipe 4.

[0031] A nozzle 7 is installed inside the inlet end 2a. The inlet end 2a is cylindrical and fixedly connected to the pump body 2. A fixed seat 8 is located in the middle of the inlet end 2a, and the nozzle 7 passes through the fixed seat 8 and is threadedly connected to it. The two ends of the connecting pipe 4 are connected to the outlet end 2b and the nozzle 7, respectively. The nozzle 7 faces the outside of the inlet end 2a. During operation, the impeller 3 is driven by the motor 1 to rotate, transporting water from the inlet end 2a to the outlet end 2b. Since one end of the connecting pipe 4 is connected to the outlet end 2b, and the other end of the connecting pipe 4 is connected to the nozzle 7, which faces the outside of the inlet end 2a, during operation, high-pressure water flows from the outlet end 2b through the connecting pipe 4 and the nozzle 7 to flush the sludge outside the inlet end 2a, achieving sludge transportation and providing a good sewage discharge effect. The electric gate valve 9 is controlled by a switch or control system to open or close, which has the advantage of being easy to use.

[0032] As another way, such as Figure 2 As shown, the other end of the connecting pipe 4 is provided with a spherical groove 4a, and the inner end of the nozzle 7 has a spherical connector 7h and the spherical connector 7h is embedded in the spherical groove 4a, which makes it easy to adjust the water outlet direction of the nozzle 7 and has the advantage of being more convenient to use.

[0033] Example 2

[0034] This embodiment is largely the same in structure and principle as Embodiment 1, except that: Figure 3 As shown, a self-flushing submersible sewage pump includes a motor 1, a pump body 2, and an impeller 3. The pump body 2 has an inlet end 2a and an outlet end 2b. The impeller 3 is located inside the pump body 2 and is driven to rotate by the motor 1. A connecting pipe 4 is connected to the outlet end 2b. A connecting body 5 is fixedly connected to the middle of the inlet end 2a. The connecting body 5 is annular and coaxially arranged with the outlet end 2b. The other end of the connecting pipe 4 is connected to the connecting body 5. The number of nozzles 7 is 3 to 6 and they are evenly arranged on the connecting body 5, with the nozzles 7 facing outwards from the inlet end 2a. The annular shape of the connecting body 5 facilitates the flow of water through the inlet end 2a. By setting the connecting body 5 connecting 3 to 6 nozzles 7, it has the advantages of simple structure and good sludge spraying effect.

[0035] Example 3

[0036] This embodiment is largely the same in structure and principle as Embodiment 1, except that: Figure 4 and 5As shown, a self-flushing submersible sewage pump includes a motor 1, a pump body 2, and an impeller 3. The pump body 2 has an inlet end 2a and an outlet end 2b. The impeller 3 is located inside the pump body 2 and is driven to rotate by the motor 1. A connecting pipe 4 is connected to the outlet end 2b. A connecting body 5 is fixedly connected to the middle of the inlet end 2a. The connecting body 5 is annular and coaxially arranged with the outlet end 2b. A cylindrical connecting body 5 is fixedly connected to the middle of the inlet end 2a. A rotating body 6 with a hollow center is axially fixedly connected to the middle of the connecting body 5. The rotating body 6 is connected to the connecting body 5. The shaft of the motor 1 is coaxially arranged with the rotating body 6 and the two are fixedly connected. A nozzle 7 is fixedly connected to the lower side of the rotating body 6.

[0037] The nozzle 7 is flat and includes a body 7a with a cavity in the middle. The inner end of the body 7a is a water inlet cavity, and the outer end of the body 7a has a water nozzle 7b. The cavity of the body 7a has symmetrically arranged flow dividers 7c. The inner end of the flow divider 7c forms a flow channel 7d. The outer end of the flow divider 7c and the inner sidewall corresponding to the body 7a form a flow channel 7e with an inlet and an outlet. The cavity of the body 7a has an auxiliary flow divider 7f. The auxiliary flow divider 7f is located between the lower side of the flow divider 7c and the water nozzle 7b of the body 7a. The auxiliary flow divider 7f is symmetrically arranged with the axis of the flow channel 7d as the center. The outlet of the flow channel 7e faces the corresponding side of the auxiliary flow divider 7f.

[0038] The inner wall of the main body 7a is symmetrically provided with protruding guide protrusions 7g. The upper sidewall of the guide protrusion 7g and the outer sidewall of the corresponding auxiliary distributor 7f form the aforementioned flow channel 2 7e, which has the advantages of good flow guiding effect and relatively compact structure. The auxiliary distributor 7f is T-shaped and the central protrusion of the auxiliary distributor 7f faces the first fluid channel, which can distribute the water flowing through the first fluid channel more evenly, so that the water flow on both sides of the auxiliary distributor 7f is more balanced.

[0039] The rotating body 6 is driven by a rotating shaft to rotate, which in turn drives the nozzle 7 to rotate and spray, flushing the sludge outside the inlet end 2a. It has the advantages of large spray area and good cleaning effect. During operation, the connecting pipe 4 is connected to the inlet chamber of the main body 7a. The water flow from the connecting pipe 4 enters the inlet chamber of the main body 7a and flows towards the nozzle 7b after passing through the flow channel 7d and flow channel 7e separated by two flow dividers 7c. The auxiliary flow divider 7f splits the water flow through flow channel 7d to both sides. After splitting, the water flow oscillates with the water flow through the corresponding flow channel 7e. Then the water flow flows towards the nozzle 7b on the lower side and oscillates again. The oscillated water flow is discharged through the nozzle 7b. Through the two oscillations of the water flow, it has a good spraying effect and can effectively flush the sludge, thus improving the sewage discharge effect.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0041] Although this document frequently uses terms such as motor 1, pump body 2, inlet end 2a, outlet end 2b, impeller 3, connecting pipe 4, spherical groove 4a, connecting body 5, rotating body 6, nozzle 7, main body 7a, spray nozzle 7b, fluid distributor 7c, flow channel one 7d, flow channel two 7e, auxiliary fluid distributor 7f, guide protrusion 7g, spherical connector 7h, fixed seat 8, and electric gate valve 9, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A self-flushing submersible sewage pump, comprising a motor (1), a pump body (2), and an impeller (3), wherein the pump body (2) has an inlet end (2a) and an outlet end (2b), the impeller (3) is located inside the pump body (2), and the motor (1) drives the impeller (3) to rotate, characterized in that, The water outlet end (2b) is communicated with a communicating pipe (4), the water inlet end (2a) is provided with a shower head (7), the two ends of the communicating pipe (4) are communicated with the water outlet end (2b) and the shower head (7) respectively, and the shower head (7) faces the outside of the water inlet end (2a); The middle part of the water inlet end (2a) is fixedly connected with a communicating body (5) in a barrel shape, the middle part of the communicating body (5) is fixedly connected with a rotating body (6) with a cavity, the rotating body (6) is communicated with the communicating body (5), the rotating shaft of the motor (1) is coaxially arranged with the rotating body (6) and is fixedly connected with the rotating body (6), and the lower side of the rotating body (6) is fixedly connected with the shower head (7); The shower head (7) is flat, the shower head (7) comprises a body (7a) with a cavity in the middle part, the inner end of the body (7a) is a water inlet cavity, the outer end of the body (7a) has a water outlet (7b), the cavity of the body (7a) is provided with a symmetrically arranged flow dividing body (7c), the inner end of the flow dividing body (7c) forms a flow passage one (7d), the outer end of the flow dividing body (7c) and the corresponding inner side wall of the body (7a) form a flow passage two (7e) with an inlet and an outlet, the cavity of the body (7a) is provided with an auxiliary flow dividing body (7f), the auxiliary flow dividing body (7f) is located between the lower side of the flow dividing body (7c) and the water outlet (7b) of the body (7a), the auxiliary flow dividing body (7f) is symmetrically arranged with the axis of the flow passage one (7d) as the center, and the outlet of the flow passage two (7e) faces the corresponding side of the auxiliary flow dividing body (7f); The inner side wall of the body (7a) is symmetrically provided with a protruding flow guiding convex body (7g), and the upper side wall of the flow guiding convex body (7g) and the outer side wall corresponding to the auxiliary flow dividing body (7f) form the flow passage two (7e); The auxiliary flow dividing body (7f) is T-shaped, and the middle convex body of the auxiliary flow dividing body (7f) faces the flow passage one (7d); The cross section of the flow passage one (7d) and the cross section of the flow passage two (7e) are smaller than the cross section of the water inlet cavity; and the cross section of the region between the end of the water inlet cavity close to the water outlet (7b) and the auxiliary flow dividing body (7f) is larger than the cross section of the water outlet (7b); The communicating pipe (4) is provided with an electric gate valve (9).

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