RU71711U1 - CENTRIFUGAL VERTICAL PUMP - Google Patents

Abstract

The proposed utility model relates to pumping technology and can be used to create installations used outdoors and exposed to precipitation.

The problem of creating pumps operating outdoors in the presence of precipitation is to protect the bearing assembly from moisture.

The purpose of the proposed technical solution is to eliminate these disadvantages, i.e. increase the reliability of the device.

To achieve this goal, the following technical solution is proposed:

In a centrifugal pump, comprising: an engine, a shaft line formed by two or more suspensions; flow part; bend, the upper bearing is located above the level of the base plate, which increases the reliability of the device, because the place through which moisture can enter the internal cavity of the shaft shaft, while being above the possible level of liquid that accumulates on the top of the plate and has a labyrinth seal. In the support below the level of the overflow of the labyrinth seal, a drainage hole is made., 1 pf; 1 ill.

Description

The proposed utility model relates to pumping technology and can be used to create installations used outdoors and exposed to precipitation.

The problem of creating pumps operating outdoors in the presence of precipitation is to protect the bearing assembly from moisture.

Known semi-submersible vertical centrifugal pump NV-M manufactured by JSC "Dimitrovgradhimmash" (http: //www.himmash-net), the disadvantage of which is the low reliability of the bearing units due to the fact that the upper bearing is located below the level of the base plate, which leads to accumulation of rainwater in its cavities and subsequent leakage into the shaft line.

Known semi-submersible centrifugal pump NV-D produced by JSC "Hydrogas" (see the catalog of products of JSC "Hydrogas" 2005, page 23, http://www.hydrogas.ru - prototype).

The pump includes an electric motor, a shaft line formed by two or more suspensions, a flow part. The flow part of the pump is a centrifugal type, with a spiral housing.

Torque is transmitted from the electric motor to the impeller through a shaft line. The shafts are interconnected by elastic couplings.

The upper bearing is located below the level of the base plate.

The disadvantage of this solution is the lack of reliability of the pump. This is due to the fact that the upper part of the suspension, the plate and the engine mount form a cavity in which atmospheric moisture can accumulate, which leads to its gradual penetration into the water supply and leaching of grease from the bearings (as a result, overheating and destruction).

The purpose of the proposed technical solution is to eliminate these disadvantages, i.e. increase the reliability of the device.

To achieve this goal, the following technical solution is proposed:

In a centrifugal pump, comprising: an engine, a shaft line formed by two or more suspensions; flow part; bend, the upper bearing is located above the level of the base plate, which increases the reliability of the device, because a place through which moisture can enter the internal cavity of the shaft shaft, while being above the possible level of liquid that accumulates on the upper part

slabs and has a labyrinth seal. In the support below the overflow of the labyrinth seal, a drainage hole is made.

The proposed utility model is shown in the drawing of figure 1, where:

1. Electric motor

2. Prop

3. Labyrinth seal,

4. The elastic coupling

5. Top suspension

6. Bearing

7. Val

8. Cooker

9. Shafting,

10. Suspension,

11. The challenge

12. Flowing part,

13. The drainage hole.

Semi-submersible vertical centrifugal pump, designed for pumping water-oil mixture from containers with the presence of abrasive solids. Main structural elements: electric motor (1), support (2), labyrinth

seal (3), elastic couplings (4), upper suspension (5), bearings (6), shafts (7), plate (8), shafting (9), suspension (10), bend (11). The transmission of torque from the electric motor to the impeller is carried out using shafts (7), elastic couplings (4). Shafts in suspensions are mounted on bearings (6).

The operation of the device is as follows.

Before starting work, the pump is immersed in a container with liquid and the plate is fixed (3). In this case, fluid fills the pump casing (8).

When starting the engine (1), the torque is transmitted by the shafts (7) to the impeller (14), which creates a pressure of the liquid and lifts it through the outlet (11) to the outlet pipe.

If moisture gets on top of the pump, it will accumulate on the surface of the plate (8) and inside the support (2). The liquid level in the area of the seal assembly will be determined by the level of the location of the drainage hole (13). The raised upper part of the upper suspension will be above the liquid level, which will not lead to its leakage into the shaft line (9).

Thus, the use of the proposed utility model will improve the reliability of the pump.

Claims (1)

A centrifugal pump with a flowing part immersed in the pumped medium containing an engine, a shaft line formed by one or more suspensions, a flowing part formed by an impeller located in the pump housing and a branch, characterized in that the upper part of the upper suspension is located above the level of the plate.