Novel submersible sewage pump

Abstract

The utility model discloses a novel submersible sewage pump, relates to the technical field of sewage pumps, and aims to solve the problems that the internal sealing effect of the conventional sewage pump is common, so that a sealing ring is easy to damage and leak in the whole use process, the whole sealing effect is reduced, and the whole normal use is influenced. According to the technical scheme, the pump is characterized by comprising a pump body, a chassis is fixedly connected to the lower end of the pump body, an impeller is rotatably connected to the interior of the pump body, a sealing ring used for rotary sealing is fixedly connected to the joint of the impeller and the chassis, a driving motor is fixedly connected to the upper end of the pump body, and a connecting shaft is fixedly connected to the output end of the driving motor; the connecting shaft is fixedly connected with the impeller, an oil chamber is arranged between the pump body and the driving motor, and mechanical seals used for rotary sealing are arranged among the oil chamber, the pump body and the connecting shaft. And the effects of full sealing and stable operation are achieved.

Description

Technical Field

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

[0002] A sewage pump is a type of pump where the pump and motor are integrated and simultaneously submerged in liquid. Compared to general horizontal or vertical sewage pumps, sewage pumps have a compact structure and smaller footprint. They are easy to install and maintain; large sewage pumps are generally equipped with automatic coupling devices for automatic installation, making installation and maintenance quite convenient, and they can operate continuously for extended periods.

[0003] The existing technical solutions mentioned above have the following drawbacks: the internal sealing effect of the existing sewage pumps is generally poor, which makes it easy for the sealing ring to be damaged and leak during use, reducing the overall sealing effect and affecting the normal use of the pump. Utility Model Content

[0004] The purpose of this invention is to provide a new type of submersible sewage pump that is fully sealed to ensure normal overall operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel submersible sewage pump includes a pump body, a chassis fixedly connected to the lower end of the pump body, an impeller rotatably connected inside the pump body, a sealing ring for rotary sealing fixedly connected at the connection between the impeller and the chassis, a drive motor fixedly connected to the upper end of the pump body, a connecting shaft fixedly connected to the output end of the drive motor, the connecting shaft being fixedly connected to the impeller, an oil chamber provided between the pump body and the drive motor, and mechanical seals for rotary sealing provided between the oil chamber, the pump body, and the connecting shaft.

[0007] The drive motor has a junction box fixedly connected inside for placing wires. One end of the drive motor is electrically connected to a motor wire, which extends through the junction box to the upper end of the drive motor.

[0008] The other end of the drive motor is electrically connected to a signal line, which extends through the drive motor to the upper end of the drive motor.

[0009] An oil-water probe is fixedly connected to the upper end of the oil chamber, and the detection end of the oil-water probe extends through the upper end of the oil chamber into the interior of the oil chamber.

[0010] The mechanical seal is made of hard, corrosion-resistant tungsten carbide material and has a double-channel tandem sealing structure.

[0011] The impeller adopts a single-channel or dual-channel structure.

[0012] In summary, the beneficial technical effects of this utility model are as follows:

[0013] 1. The mechanical seal adopts a double-channel tandem sealing structure to ensure a good overall sealing effect and reduce the possibility of overall leakage. It is made of a new type of hard and corrosion-resistant tungsten carbide material, which has the characteristics of reliable sealing, wear resistance and long service life.

[0014] 2. A sealing ring is adopted and installed at the inlet ring of the pump body. When the inlet ring is worn due to the impeller's operation, the sealing ring can be replaced to ensure that the pump operates at the best efficiency, achieves a high degree of sealing as a whole, and facilitates the replacement of the sealing ring, resulting in a full sealing effect.

[0015] 3. The impeller is fully lubricated by an oil chamber, and the impeller adopts a single-channel or double-channel structure, which has a strong throughput capacity, can pass through large materials and fibrous waste, reduces clogging and entanglement failures, and produces a stable operating effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0018] In the diagram, 1 is the pump body; 2 is the chassis; 3 is the impeller; 4 is the sealing ring; 5 is the drive motor; 6 is the connecting shaft; 7 is the oil chamber; 8 is the mechanical seal; 51 is the junction box; 52 is the motor wiring; 53 is the signal line; and 71 is the oil-water probe. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Reference Figure 1 and Figure 2 A novel submersible sewage pump includes a pump body 1, a chassis 2 fixedly connected to the lower end of the pump body 1, an impeller 3 rotatably connected inside the pump body 1, a sealing ring 4 for rotary sealing fixedly connected at the connection between the impeller 3 and the chassis 2, a drive motor 5 fixedly connected to the upper end of the pump body 1, a connecting shaft 6 fixedly connected to the output end of the drive motor 5, the connecting shaft 6 being fixedly connected to the impeller 3, an oil chamber 7 being provided between the pump body 1 and the drive motor 5, and mechanical seals 8 for rotary sealing being provided between the oil chamber 7, the pump cover of the pump body 1, and the connecting shaft 6. The mechanical seals 8 adopt a double-channel series seal, using a new type of hard and corrosion-resistant tungsten carbide material, which has the characteristics of reliable sealing, wear resistance, and long service life.

[0021] Reference Figure 2The drive motor 5 has a junction box 51 fixedly connected inside for placing wires. One end of the drive motor 5 is electrically connected to a motor wire 52, which extends through the junction box 51 to the upper end of the drive motor 5, facilitating wiring connections and overall assembly. The other end of the drive motor 5 is electrically connected to a signal wire 53, which extends through the drive motor 5 to the upper end, facilitating overall docking and control of the drive motor 5. An oil-water probe 71 is fixedly connected to the upper end of the oil chamber 7, with its detection end extending through the upper end of the oil chamber 7 into the interior. The oil-water probe 71 can detect oil and water, ensuring good overall monitoring performance. The mechanical seal 8 is made of hard, corrosion-resistant tungsten carbide material and has a double-channel series sealing structure, featuring reliable sealing, wear resistance, and long service life. The impeller 3 adopts a single-channel or double-channel structure, which has a strong throughput capacity, enabling the passage of large materials and fibrous debris, reducing clogging and entanglement.

[0022] The implementation principle of this embodiment is as follows: First, the drive motor 5 drives the connecting shaft 6 and the impeller 3 to rotate. During the rotation of the impeller 3, the sealing ring 4 is also rotated to ensure a good overall rotational sealing effect. The sealing ring 4 is installed at the inlet ring of the pump body 1. When the inlet ring of the impeller 3 is worn due to operation, the sealing ring 4 can be replaced to ensure that the pump operates at the best efficiency. At the same time, the oil chamber 7 provides sufficient rotational lubrication for the rotating connecting shaft 6. The mechanical seal 8 is set at the connecting shaft 6 and adopts a double-stage series seal. It is made of a new type of hard and corrosion-resistant tungsten carbide material, which has the characteristics of reliable sealing, wear resistance, and long service life, ensuring the normal operation of the whole system.

[0023] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel submersible sewage pump, comprising a pump body (1), characterized in that: The pump body (1) is fixedly connected to a chassis (2) at its lower end. An impeller (3) is rotatably connected inside the pump body (1). A sealing ring (4) for rotary sealing is fixedly connected at the connection between the impeller (3) and the chassis (2). A drive motor (5) is fixedly connected to the upper end of the pump body (1). A connecting shaft (6) is fixedly connected to the output end of the drive motor (5). The connecting shaft (6) is fixedly connected to the impeller (3). An oil chamber (7) is provided between the pump body (1) and the drive motor (5). Mechanical seals (8) for rotary sealing are provided between the oil chamber (7), the pump body (1), and the connecting shaft (6).

2. The novel submersible sewage pump according to claim 1, characterized in that: The drive motor (5) has a junction box (51) for placing wires fixedly connected inside. One end of the drive motor (5) is electrically connected to a motor wire (52). The motor wire (52) passes through the junction box (51) and extends to the upper end of the drive motor (5).

3. The novel submersible sewage pump according to claim 2, characterized in that: The other end of the drive motor (5) is electrically connected to a signal line (53), which extends through the drive motor (5) to the upper end of the drive motor (5).

4. The novel submersible sewage pump according to claim 1, characterized in that: An oil-water probe (71) is fixedly connected to the upper end of the oil chamber (7), and the detection end of the oil-water probe (71) extends through the upper end of the oil chamber (7) into the interior of the oil chamber (7).

5. The novel submersible sewage pump according to claim 1, characterized in that: The mechanical seal (8) is made of hard, corrosion-resistant tungsten carbide material, and the mechanical seal (8) is a double-channel series sealing structure.

6. The novel submersible sewage pump according to claim 1, characterized in that: The impeller (3) adopts a single-channel or double-channel structure.

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