Protective device for rotating part of horizontal multi-stage centrifugal pump

Abstract

The utility model aims to provide a protective device for a rotating part of a horizontal multi-stage centrifugal pump, which belongs to the technical field of coal mine facilities and comprises a transparent protective cover made of high-strength transparent resin materials, the transparent protective cover is spherical, the edge of the transparent protective cover is provided with a through hole, a fixing pin is arranged in the through hole in a penetrating manner, and the fixing pin is fixed on the transparent protective cover. The end, located in the transparent protective cover, of the fixing pin is connected with a clamping plate with a Z-shaped section, one end of the clamping plate is provided with a through hole connected with the fixing pin, the fixing pin and the clamping plate are fixed through a nut, and the other end of the clamping plate is connected with an end shell of the multi-stage horizontal centrifugal pump in a clamped mode. The sealing device is convenient to mount and dismount, the shaft end of the centrifugal pump is protected, and the sealing filler is convenient to replace.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal mine facilities, specifically relating to a protective device for the rotating parts of a horizontal multistage centrifugal pump. Background Technology

[0002] Multistage centrifugal pumps are widely used and consumed in large quantities in coal mines, as they are a primary drainage device. However, currently, all multistage centrifugal pumps manufactured in China have open shafts at both ends to accommodate the need for changing sealing packing, resulting in direct exposure of the rotating shaft. Given the complex working environment in coal mines, the lack of safety protection for exposed rotating parts can easily lead to injuries or even fatalities. Furthermore, according to Article 444 of the "Coal Mine Safety Regulations," easily accessible, exposed live electrical components and exposed rotating and transmission parts of machinery must be equipped with protective covers or barriers. Therefore, based on the above issues and regulations, and considering the actual needs of the site, a dedicated safety protection device has been designed for the horizontal multistage centrifugal pumps used in coal mines to ensure safe operation of the equipment. Utility Model Content

[0003] This invention addresses the problem that existing multistage centrifugal pumps lack shaft end protection measures by providing a protective device for the rotating parts of a horizontal multistage centrifugal pump.

[0004] The present invention adopts the following technical solution:

[0005] A protective device for the rotating parts of a horizontal multistage centrifugal pump includes a transparent cover made of high-strength transparent resin material. The transparent cover is spherical, and its edge has a through hole. A fixing pin passes through the through hole, and one end of the fixing pin inside the transparent cover is connected to a Z-shaped clamping plate. One end of the clamping plate has a through hole that connects to the fixing pin. The fixing pin and the clamping plate are fixed by a nut, and the other end of the clamping plate is engaged with the end housing of the multistage horizontal centrifugal pump.

[0006] Furthermore, the horizontal multistage centrifugal pump has two transparent protective covers at each end, located at both ends of the end housing.

[0007] Furthermore, the center of the transparent shield and the center of the end housing are located at the same position.

[0008] Furthermore, each transparent shield has two sets of through holes, located at the top and bottom ends of the transparent shield, with each set containing two through holes.

[0009] Furthermore, the fixing pin is a U-shaped fixing pin.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model is made of transparent material, which makes it easy to observe.

[0012] 2. This utility model is easy to install and disassemble, which not only protects the centrifugal pump shaft end, but also facilitates the replacement of the sealing packing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is a schematic diagram illustrating the installation and use of this utility model;

[0016] Figure 4 This is a partial schematic diagram showing the installation and use of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of a horizontal multistage centrifugal pump;

[0018] Among them: 1-transparent protective cover; 2-through hole; 3-fixing pin; 4-clamping plate; 5-nut; 6-rotating shaft. Detailed Implementation

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

[0020] As shown in the figure, a protective device for the rotating parts of a horizontal multistage centrifugal pump includes a transparent cover 1 made of high-strength transparent resin material. The transparent cover 1 is spherical, and the edge of the transparent cover 1 is provided with a through hole 2. A fixing pin 3 is inserted through the through hole. One end of the fixing pin 3 located inside the transparent cover 1 is connected to a Z-shaped clamping plate 4. One end of the clamping plate 4 is provided with a through hole connected to the fixing pin 3. The fixing pin 3 and the clamping plate 4 are fixed by a nut 5. The other end of the clamping plate 4 is engaged with the end housing of the multistage horizontal centrifugal pump.

[0021] Furthermore, the horizontal multistage centrifugal pump has two transparent protective covers 1 at each end, located at both ends of the end housing.

[0022] Furthermore, the center of the transparent shield 1 is located at the same position as the center of the end shell.

[0023] Furthermore, each transparent shield 1 has two sets of through holes 2, located at the upper and lower ends of the transparent shield 1 respectively, with each set containing two through holes 2.

[0024] Furthermore, the fixing pin 3 is a U-shaped fixing pin.

[0025] When this utility model is in use, the clamping plate 4 is fixed to the transparent cover 1 by the U-shaped fixing pin 3 and nut 5, and the transparent cover 1 is directly clamped to the two end housings of the multi-stage horizontal centrifugal pump by the other end of the clamping plate 4.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective device for the rotating parts of a horizontal multistage centrifugal pump, characterized in that: The transparent cover (1) is made of high-strength transparent resin material. The transparent cover (1) is spherical. The edge of the transparent cover (1) is provided with a through hole (2). A fixing pin (3) is inserted through the through hole. One end of the fixing pin (3) inside the transparent cover (1) is connected to a Z-shaped clamping plate (4). One end of the clamping plate (4) is provided with a through hole connected to the fixing pin (3). The fixing pin (3) and the clamping plate (4) are fixed by a nut (5). The other end of the clamping plate (4) is clamped to the end housing of the multi-stage horizontal centrifugal pump.

2. A protective device for the rotating parts of a horizontal multistage centrifugal pump according to claim 1, characterized in that: The horizontal multistage centrifugal pump has two transparent protective covers (1) at each end, located at both ends of the end housing.

3. A protective device for the rotating parts of a horizontal multistage centrifugal pump according to claim 1, characterized in that: The center of the transparent shield (1) and the center of the end shell are located at the same position.

4. A protective device for the rotating parts of a horizontal multistage centrifugal pump according to claim 1, characterized in that: Each transparent shield (1) has two sets of through holes (2), located at the top and bottom ends of the transparent shield (1), with two through holes (2) in each set.

5. A protective device for the rotating parts of a horizontal multistage centrifugal pump according to claim 1, characterized in that: The fixing pin (3) is a U-shaped fixing pin.

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