Pump body and submersible pump

Abstract

This utility model discloses a pump body and a submersible sewage pump. The pump body includes a pump housing, an impeller, and a baffle. A mounting base is provided on the outer side of the pump housing, and a through hole is formed within the mounting base. One end of the through hole extends into the interior of the pump housing, and the other end extends into the outer side of the mounting base. The impeller is disposed within the pump housing, and the baffle is installed within the through hole. The front end of the baffle extends into the pump housing, and a gap exists between the front end of the baffle and the impeller. The baffle is a hollow air bladder. This utility model's pump body can prevent sewage from getting stuck between the impeller and the baffle, ensuring stable pump operation.

Description

Technical Field

[0001] This utility model relates to the field of submersible sewage pump technology, and in particular to a pump body and a submersible sewage pump. Background Technology

[0002] Submersible sewage pumps, as electromechanical devices that integrate a motor and a pump and can operate continuously submerged in liquid, are widely used in municipal drainage, industrial wastewater, and domestic sewage treatment. These pumps typically employ a volute-type pump body structure with an internal baffle to guide the high-velocity liquid flow at the impeller outlet into the volute channel, thereby converting the liquid's kinetic energy into pressure energy. The baffle structure is a crucial component affecting the submersible sewage pump's efficiency, head stability, and anti-clogging performance.

[0003] In existing technologies, the baffle of a submersible sewage pump is mostly a fixed structure cast integrally with the pump body. The geometry of this fixed baffle and its clearance with the impeller outlet are determined during the design phase and cannot be adjusted according to operating conditions. When dirt accumulates between the baffle and the impeller, the submersible sewage pump will malfunction. Utility Model Content

[0004] The primary objective of this invention is to provide a pump body that ensures that the space between the tongue and the impeller is not easily clogged with dirt.

[0005] Another objective of this invention is to provide a submersible sewage pump using the aforementioned pump body to ensure stable operation of the submersible sewage pump.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A pump body includes a pump housing, an impeller, and a tongue. A mounting base is provided on the outer side of the pump housing, and a through hole is provided in the mounting base. One end of the through hole extends into the interior of the pump housing, and the other end extends into the outer side of the mounting base. The impeller is disposed inside the pump housing, and the tongue is installed in the through hole. The front end of the tongue extends into the pump housing, and there is a gap between the front end of the tongue and the impeller. The tongue is a hollow air bladder.

[0007] Preferably, the pump body further includes a sealing plate and a fixing member. The sealing plate is fixed to the end face of the mounting base away from the pump housing by the fixing member to close the through hole. The rear end of the tongue is clamped between the mounting base and the sealing plate.

[0008] Preferably, the fastener is an internal hexagon screw, the threaded end of which passes through the sealing plate and is threaded onto the mounting base to lock the sealing plate onto the end face of the mounting base.

[0009] Preferably, the rear end of the tongue is provided with a gas filling valve, which extends through the sealing plate.

[0010] Preferably, the outer periphery of the sealing plate is flush with the outer periphery of the mounting base.

[0011] Preferably, the tongue is made of rubber material.

[0012] Preferably, the pump housing and the mounting base are integrally formed.

[0013] This utility model also relates to a submersible sewage pump, including the aforementioned pump body.

[0014] Compared with the prior art, the pump body of this utility model embodiment has the following advantages: In this invention, the tongue is a hollow air bladder. Under pressure, the tongue can be compressed and deformed. Thus, when dirt is blocked between the impeller and the front end of the tongue, the tongue can be deformed under pressure, thereby increasing the gap between the impeller and the tongue to allow the dirt to pass through. Then the tongue returns to its original position. Therefore, dirt can be prevented from getting stuck between the impeller and the tongue, ensuring stable operation of the pump. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pump body according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a submersible sewage pump according to an embodiment of the present invention.

[0016] In the figure, 1 is the pump housing; 2 is the impeller; 3 is the tongue; 4 is the mounting base; 41 is the through hole; 5 is the sealing plate; 6 is the fixing component; 7 is the air filling valve; 8 is the drive mechanism; 81 is the drive motor; and 82 is the motor housing. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] In the description of this utility model, it should be understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, parts, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components, and / or groups thereof. It should be understood that when we say a part is "connected" to another part, it can be directly connected to the other part, or there may be intermediate parts. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0019] like Figure 1 As shown, this utility model relates to a pump body, including a pump housing 1, an impeller 2, and a tongue 3. A mounting base 4 is provided on the outer side of the pump housing 1. A through hole 41 is provided in the mounting base 4. One end of the through hole 41 extends into the interior of the pump housing 1, and the other end of the through hole 41 extends into the outer side of the mounting base 4. The impeller 2 is disposed inside the pump housing 1. The tongue 3 is installed in the through hole 41. The front end of the tongue 3 extends into the pump housing 1, and there is a gap between the front end of the tongue 3 and the impeller 2. The tongue 3 is a hollow air bladder.

[0020] In this invention, the tongue 3 is a hollow air bladder. Under pressure, the tongue 3 can be compressed and deformed. Thus, when dirt is blocked between the impeller 2 and the front end of the tongue 3, the tongue 3 can be deformed under pressure, thereby increasing the gap between the impeller 2 and the tongue 3 to allow the dirt to pass through. Then the tongue 3 returns to its original position. Therefore, dirt can be prevented from getting stuck between the impeller 2 and the tongue 3, ensuring stable operation of the pump body.

[0021] In this embodiment, the pump body further includes a sealing plate 5 and a fixing member 6. The sealing plate 5 is fixed to the end face of the mounting base 4 away from the pump housing 1 by the fixing member 6 to close the through hole 41. The rear end of the tongue 3 is sandwiched between the mounting base 4 and the sealing plate 5.

[0022] That is, by setting the sealing plate 5 and the fixing member 6, the through hole 41 can be closed, the tongue 3 can be fixed, and the tongue 3 can be detached, so that the tongue 3 can be easily maintained and replaced.

[0023] Preferably, the fixing member 6 is an internal hexagon screw, the threaded end of which passes through the sealing plate 5 and is threaded onto the mounting base 4, so as to lock the sealing plate 5 on the end face of the mounting base 4, thereby facilitating disassembly and assembly.

[0024] In this embodiment, the rear end of the tongue 3 is provided with an air filling valve 7, which extends through the sealing plate 5, so that an external air source can fill the tongue 3 with air through the air filling valve 7.

[0025] In this embodiment, the outer periphery of the sealing plate 5 is flush with the outer periphery of the mounting base 4 to ensure a flat shape, reduce external interference, reduce the risk of fluid or debris getting stuck, and avoid the accumulation of dirt, which would affect the reliability and durability of the equipment.

[0026] In this embodiment, the tongue 3 is made of rubber material, specifically wear-resistant rubber material, to ensure that the tongue 3 has good elastic deformation ability and has corrosion resistance and wear resistance, which can extend the service life of the tongue 3. At the same time, the tongue 3 also has good impact resistance, which can effectively absorb the impact of large particles of dirt and prevent the tongue 3 from breaking or being damaged.

[0027] In this embodiment, the pump housing 1 and the mounting base 4 are integrally formed. The pump housing 1 and the mounting base 4 are cast in one piece, which reduces splicing, improves the overall sealing performance and structural stability, simplifies manufacturing, and improves reliability.

[0028] like Figure 2 As shown, this utility model also relates to a submersible sewage pump, including the pump body and a drive mechanism 8. The drive mechanism 8 includes a drive motor 81 and a motor housing 82. The drive motor 81 is disposed inside the motor housing 82. The motor housing 82 is connected to the pump body. The output shaft of the drive motor 81 passes through the pump housing 1 of the pump body and is connected to the impeller 2.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A pump body, characterized by, The pump includes a pump housing, an impeller, and a tongue. A mounting base is provided on the outer side of the pump housing, and a through hole is provided in the mounting base. One end of the through hole extends into the interior of the pump housing, and the other end extends into the outer side of the mounting base. The impeller is located inside the pump housing, and the tongue is installed in the through hole. The front end of the tongue extends into the pump housing, and there is a gap between the front end of the tongue and the impeller. The tongue is a hollow air bladder.

2. The pump body of claim 1, wherein It also includes a sealing plate and a fixing member. The sealing plate is fixed to the end face of the mounting base away from the pump housing by the fixing member to close the through hole. The rear end of the tongue is clamped between the mounting base and the sealing plate.

3. The pump body of claim 2, wherein, The fastener is an internal hexagon screw, the threaded end of which passes through the sealing plate and is threaded onto the mounting base to lock the sealing plate onto the end face of the mounting base.

4. The pump body of claim 2, wherein, The rear end of the tongue is provided with a gas filling valve, which extends through the sealing plate.

5. The pump body of claim 2, wherein, The outer periphery of the sealing plate is flush with the outer periphery of the mounting base.

6. The pump body of claim 1, wherein, The tongue is made of rubber.

7. The pump body of claim 1, wherein The pump housing and the mounting base are integrally formed.

8. A submersible sewage pump characterized in that Includes the pump body as described in any one of claims 1-7.

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