Novel buffer type slurry pump coupling pin structure

Abstract

The novel buffer type slurry pump coupler pin structure comprises a pin, a rubber lining layer is arranged on the surface of the pin, and the pin is located in a pin mounting hole of a slurry pump coupler; a middle hole is formed in the middle of the pin. The impact force at the starting moment of the slurry pump is buffered, and the pin breakage frequency is reduced.

Description

Technical Field

[0001] The invention relates to the field of column pins, and in particular to a novel column pin structure of a buffer type slurry pump coupling. Background Art

[0002] Slurry pumps are important equipment in sewage treatment systems. As the operating medium of slurry pumps is mud, they are frequently started and stopped and have heavy loads. To protect the bearing components and motor equipment of slurry pumps from running safely under rated loads, the couplings use nylon pin-type protective connections (when the pin breaks in overload operation, the pump and motor separation protection starts). As the mud concentration is difficult to control, the pin breaks frequently, the pin spare parts are consumed frequently, and the maintenance frequency is high.

[0003] Therefore, it is necessary to develop a new type of slurry pump coupling pin structure to reduce the frequency of pin breakage. Summary of the invention

[0004] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a novel buffer type slurry pump coupling pin structure, which can buffer the instantaneous impact force when the slurry pump is started and reduce the frequency of pin breakage.

[0005] Technical solution: A novel buffer type slurry pump coupling pin structure of the present invention is characterized in that it includes a pin, a rubber lining layer is provided on the surface of the pin, and the pin is located in the pin mounting hole of the slurry pump coupling; and an intermediate hole is provided in the middle of the pin.

[0006] Wherein, the pin is a frustum structure.

[0007] Wherein, the rubber lining layer is a rubber buffer layer.

[0008] Wherein, the thickness of the rubber lining layer is 1mm-3mm.

[0009] Wherein, the thickness of the rubber lining layer is 2 mm.

[0010] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention improves the existing nylon pins and uses rubber lining treatment on the nylon pins (the surface of the nylon pins is lined with 2mm rubber to buffer the instantaneous impact force of the slurry pump starting and reduce the frequency of pin breakage). BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] In the figure, 1 is the coupling of the slurry pump; 2 is the column pin installation hole; 3 is the column pin; 4 is the rubber lining layer; and 5 is the middle hole. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0014] The novel buffer type slurry pump coupling pin structure of the present invention comprises a pin 3, a rubber lining layer 4 is provided on the surface of the pin 3, the pin 3 is located in the pin mounting hole 2 of the slurry pump coupling 1; and a middle hole 5 is provided in the middle of the pin 3. The pin 3 is a truncated cone structure. The rubber lining layer 4 is a rubber buffer layer. The thickness of the rubber lining layer 4 is 1 mm-3 mm. Preferably, the thickness of the rubber lining layer 4 is 2 mm.

[0015] Example:

[0016] About 50 slurry pumps in the water plant of Nangang Group are important equipment in the sewage treatment system. Since the medium is mud, the operation starts and stops frequently and the load is large, nylon pins are used to protect the coupling of the equipment (when the pin breaks in the overload operation state, the pump and motor separation protection starts). Since the mud concentration is not easy to control, the pin breaks frequently (each set of 8 pins costs 200 yuan), and the spare parts consumption is large. According to statistics, about 100 sets of pins are consumed per month for water supply and drainage, and the spare parts loss is large. It is planned to improve the existing pins and use rubber lining treatment for the pins (the surface of the pin is lined with 2mm rubber to buffer the impact force of the slurry pump at the start and reduce the frequency of pin breakage).

[0017] The present invention treats the surface of the original slurry pump nylon pin with 2mm rubber lining to reduce the instantaneous impact force when the slurry pump is started and stopped, and reduces the wear of the coupling pin hole on the nylon pin when the shaft system is poorly aligned during operation, while ensuring the protection function of the nylon pin automatically breaking due to overload. At present, the frequency of cancellation of the breakage has dropped from 8 times / month per unit to 2 times / month.

Claims

1. A new type of buffer slurry pump coupling pin structure, characterized by: It comprises a pin (3), a rubber lining layer (4) is provided on the surface of the pin (3), the pin (3) is located in a pin mounting hole (2) of a slurry pump coupling (1), and a middle hole (5) is provided in the middle of the pin (3).

2. The novel buffer type slurry pump coupling pin structure according to claim 1 is characterized in that: The pin (3) is a truncated cone structure.

3. The novel buffer type slurry pump coupling pin structure according to claim 1 is characterized in that: The rubber lining layer (4) is a rubber buffer layer.

4. The novel buffer type slurry pump coupling pin structure according to claim 1 is characterized in that: The thickness of the rubber lining layer (4) is 1 mm-3 mm.

5. The novel buffer type slurry pump coupling pin structure according to claim 1 is characterized in that: The thickness of the rubber lining layer (4) is 2 mm.

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