Pipeline sewage pump with mechanical seal oil chamber

Abstract

The utility model discloses a pipeline sewage pump with a mechanical seal oil chamber. The pipeline sewage pump comprises a base; the pump body is arranged on the base, an impeller is arranged in the pump body, and a pump cover is arranged at one end of the pump body; the motor is installed on the base, the pump cover is located between the pump body and the motor, a driving shaft of the motor penetrates through the pump cover to enter the pump body, and the impeller is connected to the driving shaft; the oil chamber is filled with oil, the oil chamber is located between the impeller and the pump cover, a mechanical seal is arranged in the oil chamber, and the driving shaft is sleeved with the mechanical seal and the oil chamber. Due to the fact that the oil chamber is additionally arranged on the mechanical seal, the problem that the mechanical seal is damaged due to media is solved, and the failure rate of the mechanical seal is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of sewage pumps, in particular to a pipeline sewage pump with a mechanical sealing oil chamber. Background Art

[0002] Currently, in the field of pipeline pumps, mechanical seals are protected and lubricated without protective measures, using self-lubrication or installing a flushing system. Furthermore, installing a flushing system requires consideration not only of pipe connections but also of the characteristics of the medium being transported. If the medium being transported has high viscosity and large amounts of particulate matter, it is not suitable for a backwash system. When pipeline pumps transport media containing a large amount of impurities, such as domestic sewage or rainwater, mechanical seals can be damaged. When a mechanical seal develops a problem and requires replacement or repair, prolonged contact with the medium can cause dirt to form on its surface. When replacing mechanical seal components, impurities invisible to the naked eye may fall onto the friction pair surface. This can cause the pump to stop operating after a period of operation due to mechanical seal failure.

[0003] In recent years, with the continuous improvement of pump product configuration, there have been higher requirements for pump safety, efficiency, and stable operation. In the pipeline pump sewage transportation industry, the long-term stable operation of the pump is an issue that needs to be urgently solved. Utility Model Content

[0004] The utility model provides a pipeline sewage pump with a mechanical seal oil chamber. By adding the oil chamber to the mechanical seal, the problem of mechanical seal damage caused by the medium is solved, thereby reducing the failure rate of the mechanical seal.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a pipeline sewage pump with a mechanical seal oil chamber, comprising:

[0006] base;

[0007] A pump body, wherein the pump body is arranged on the base, an impeller is arranged in the pump body, and a pump cover is arranged at one end of the pump body;

[0008] a motor, the motor being mounted on the base, the pump cover being located between the pump body and the motor, the drive shaft of the motor passing through the pump cover and entering the pump body, and the impeller being connected to the drive shaft;

[0009] An oil chamber is filled with oil, the oil chamber is located between the impeller and the pump cover, a mechanical seal is provided in the oil chamber, and both the mechanical seal and the oil chamber are sleeved on the drive shaft.

[0010] As a further description of the above technical solution:

[0011] The oil in the oil chamber is 4 mm to 8 mm higher than the mechanical sealing surface.

[0012] As a further description of the above technical solution:

[0013] The oil chamber is provided with an oil filling hole.

[0014] As a further description of the above technical solution:

[0015] A first sealing ring is provided between the oil chamber and the pump cover.

[0016] As a further description of the above technical solution:

[0017] The oil chamber is connected to the pump cover by screws.

[0018] As a further description of the above technical solution:

[0019] A second sealing ring is provided at both ends of the mechanical seal.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. This utility model solves the problem of mechanical seal damage caused by media by adding an oil chamber to the mechanical seal, thereby reducing the failure rate of the mechanical seal. It is easy to maintain and friendly to maintenance personnel, and can also effectively extend the service life of the mechanical seal. At the same time, the pump will not have a significant impact on the mechanical seal when idling for a certain period of time.

[0022] 2. In the utility model, the oil chamber is filled with oil, which is lubricating oil. The lubricating oil not only plays a lubricating role, but also takes away the heat generated by the mechanical seal. When the fluid enters the pump body, the heat generated by the mechanical seal during operation will also be taken away by the medium, achieving a cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of a pipeline sewage pump with a mechanical seal oil chamber.

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0026] Figure 3 This is a structural schematic diagram of the middle oil chamber of a pipeline sewage pump with a mechanical seal oil chamber.

[0027] Legend:

[0028] 1. Base; 2. Pump body; 3. Impeller; 4. Pump cover; 5. Motor; 6. Drive shaft; 7. Oil chamber; 8. Mechanical seal; 9. First sealing ring; 10. Second sealing ring. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-3 The utility model provides a technical solution: a pipeline sewage pump with a mechanical seal oil chamber, which includes:

[0031] Base 1;

[0032] A pump body 2 is provided on the base 1 , an impeller 3 is provided in the pump body 2 , and a pump cover 4 is provided at one end of the pump body 2 ;

[0033] a motor 5 , wherein the motor 5 is mounted on the base 1 , the pump cover 4 is located between the pump body 2 and the motor 5 , a drive shaft 6 of the motor 5 passes through the pump cover 4 and enters the pump body 2 , and the impeller 3 is connected to the drive shaft 6 ;

[0034] The oil chamber 7 is filled with oil and is located between the impeller 3 and the pump cover 4. A mechanical seal 8 is provided in the oil chamber 7. The mechanical seal 8 is a double-end mechanical seal. The mechanical seal 8 and the oil chamber 7 are both sleeved on the drive shaft 6.

[0035] The oil in the oil chamber 7 is 4 mm to 8 mm higher than the surface of the mechanical seal 8. Specifically, it is 5 mm, which can completely cover the mechanical seal and reduce the use of oil.

[0036] The oil chamber 7 is provided with an oil filling hole. For the convenience of refueling, when the bedroom pipeline pump is used, the position of the oil filling hole should be installed on the top to avoid lubricating oil leakage.

[0037] A first sealing ring 9 is provided between the oil chamber 7 and the pump cover 4. This can improve the sealing effect and prevent oil leakage. The first sealing ring is an O-type rubber sealing ring.

[0038] The oil chamber 7 is connected to the pump cover 4 by screws, which makes it easy to install and remove the pump cover and to repair the pump.

[0039] A second sealing ring 10 is provided at each end of the mechanical seal 8. This can improve the sealing effect and prevent fluid from entering the motor. The second sealing ring is an O-type rubber sealing ring.

[0040] Working Principle: The impeller is secured to the drive shaft via nuts and keyed connections. The motor drives the impeller, which is bolted to the pump body and pump cover, and the pump cover is also bolted to the motor. A mechanical seal is installed in the oil chamber, which is compressed to the required operating length by steps in the pump cover and the oil chamber. The oil chamber has openings for easy refueling and oil level monitoring. The oil chamber is screwed to the pump cover and compresses an O-ring. During operation, the impeller rotates, simultaneously rotating the mechanical seal installed in the oil chamber. Lubricating oil in the lower portion of the oil chamber draws in the lubricant, lubricating the mechanical seal itself. During operation, the friction between the mechanical seal and the friction surface generates heat. If this heat is not removed promptly, it can damage the seal. The lubricating oil not only lubricates the seal but also dissipates the heat generated by the mechanical seal. When the fluid enters the pump body, the heat generated by the mechanical seal during operation is also dissipated by the fluid, achieving a cooling effect.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipeline sewage pump with a mechanical seal oil chamber, characterized in that: include: base; A pump body, wherein the pump body is arranged on the base, an impeller is arranged in the pump body, and a pump cover is arranged at one end of the pump body; a motor, the motor being mounted on the base, the pump cover being located between the pump body and the motor, the drive shaft of the motor passing through the pump cover and entering the pump body, and the impeller being connected to the drive shaft; An oil chamber is filled with oil, the oil chamber is located between the impeller and the pump cover, a mechanical seal is provided in the oil chamber, the mechanical seal and the oil chamber are both sleeved on the drive shaft, and a second sealing ring is provided at each end of the mechanical seal.

2. A pipeline sewage pump with a mechanical seal oil chamber according to claim 1, characterized in that: The oil in the oil chamber is 4 mm to 8 mm higher than the mechanical sealing surface.

3. A pipeline sewage pump with a mechanical seal oil chamber according to claim 1, characterized in that: The oil chamber is provided with an oil filling hole.

4. A pipeline sewage pump with a mechanical seal oil chamber according to claim 1, characterized in that: A first sealing ring is provided between the oil chamber and the pump cover.

5. A pipeline sewage pump with a mechanical seal oil chamber according to claim 1, characterized in that: The oil chamber is connected to the pump cover by screws.

Images