CN204692164U - Sand suction pump seal ring - Google Patents

Abstract

The utility model provides a sand suction pump sealing ring, which comprises a sealing ring main body made of rubber material and a cylindrical annular mounting ring made of metal material, the mounting ring is arranged on the inner side of the inner ring opening of the sealing ring main body, It is integrally formed with the main body of the sealing ring, and the inner ring opening of the main body of the sealing ring is wrapped on the outer cylindrical surface of the mounting ring; further, the height of the cylindrical surface of the mounting ring is greater than or equal to the length of the inner ring opening of the main sealing ring body on the pump shaft. Thickness in the direction; further, the metal material of the mounting ring is preferably stainless steel or brass. The rubber sealing ring of the utility model has no direct contact with the pump shaft during work, and will not cause loose connection or wear with the pump shaft due to rubber aging; The deformation of the main body of the sealing ring will affect the sealing and cause sand leakage. The wear of the water seal and the bearing is reduced, thereby reducing the maintenance and use costs of the sand suction pump, and improving the service life and efficiency of the sand suction pump.

Description

Sand suction pump sealing ring

technical field

The utility model relates to a sealing ring, in particular to a sand suction pump sealing ring.

Background technique

The ring-shaped rubber sealing ring used in the anti-sand entering device of the bearing of the existing sand suction pump is sleeved on the pump shaft of the sand suction pump, and is located between the impeller and the pressure plate of the ring-shaped water seal chamber. The structure and installation method have the following two defects: First, in the radial direction of the pump shaft, as the seal ring rubber wears and ages, the radial compression force combined with the pump shaft will gradually lose, making the pump shaft and There is a gap between the rubber seals, causing sand to enter. Second, in the length direction of the pump shaft, when the pressure between the sealing ring and the impeller and the pressure plate of the water seal chamber is too large, it will deform and affect the sealing effect; if the pressure is too small or there is no pressure, the sealing effect will be reduced Or lost, also can cause sand leakage. The sand entering in the above two situations will accelerate the wear of the water seal and the bearing, shorten the service life, increase the maintenance workload and use cost of the sand suction pump, and seriously affect the use efficiency of the sand suction pump.

Utility model content

Technical problem: Aiming at the deficiencies in the prior art mentioned above, provide a sand suction pump sealing ring that is reliable in installation and prevents sand from entering.

Technical solution : The sand suction pump sealing ring provided by the utility model includes an annular sealing ring main body made of rubber material, and the outer ring opening of the sealing ring main body is a sealing lip. The innovation is that it also includes a metal material. Cylindrical annular mounting ring; the mounting ring is arranged on the inner side of the inner ring opening of the main body of the sealing ring, and is integrally manufactured with the main body of the sealing ring, and the inner ring opening of the main body of the sealing ring is wrapped on the outer cylindrical surface of the mounting ring . In this way, the main body of the seal ring made of rubber material does not directly contact the pump shaft during work, but is installed and connected to the pump shaft through a rigid installation ring located inside the inner ring mouth, so that the connection will not be loose or damaged due to rubber aging. Wear with the pump shaft, which will affect the seal and cause sand leakage.

In order to prevent the deformation of the main body of the rubber sealing ring caused by the extrusion of the impeller and the pressure plate of the water seal chamber, the height of the cylindrical surface of the installation ring can be greater than or equal to the thickness of the inner ring opening of the main body of the sealing ring in the direction of the length of the pump shaft . In this way, the extrusion force of the impeller or the pressure plate of the water seal chamber is also fully borne by the rigid mounting ring, and the rubber sealing ring body, except for the lip of the sealing lip, will not receive direct pressure and will not be damaged due to deformation. Affect the sealing effect.

Preferably, the metal material of the mounting ring is stainless steel or brass.

Beneficial effects : the utility model adopts the technical solution of a rigid mounting ring made of metal materials. The main body of the sealing ring made of rubber material does not directly contact the pump shaft when it is working, but passes through the rigid mounting ring located inside the inner ring mouth. Realize the installation and connection with the pump shaft, and there will be no sand leakage due to the aging of the rubber or the wear of the pump shaft. When the cylindrical height of the mounting ring is greater than or equal to the thickness of the inner ring opening of the main body of the seal ring in the length direction of the pump shaft, the extrusion force of the impeller or the pressure plate of the water seal chamber is also borne by the rigid mounting ring, and the rubber seal The main body of the ring will not be subjected to direct pressure except the lip of its sealing lip, and the sealing effect will not be affected by deformation. Due to the effects of the above two aspects, the utility model reduces the wear of the water seal and the bearing, improves the service life of the water seal and the bearing, further reduces the maintenance and use costs of the sand suction pump, and improves the service life and efficiency of the sand suction pump .

Description of drawings

Fig. 1: the front view of the utility model embodiment.

Fig. 2: Radial sectional view of the utility model embodiment.

In the figure there are: seal ring main body 1, installation ring 2.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is further described.

Example:

Referring to Fig. 1 and Fig. 2, in the figure, the sealing ring main body 1 and the mounting ring 2.

The sealing ring of the sand suction pump in this embodiment includes an annular sealing ring main body 1 made of rubber material. The cylindrical mounting ring 2 arranged on the inner side of the inner ring opening of the sealing ring main body 1, when the utility model is used, the mounting ring 2 closely cooperates with the pump shaft and rotates synchronously with the pump shaft. The mounting ring 2 is integrally formed with the sealing ring main body 1, and the inner ring opening of the sealing ring main body 1 of rubber material is wrapped on the outer cylindrical surface of the mounting ring 2, especially, the height of the cylindrical surface of the mounting ring 2 is greater than that of the sealing ring main body 1 The thickness of the inner ring mouth in the pump shaft length direction.

The scope of protection of the utility model patent is not limited to the specific scheme of this embodiment, and any technical scheme using the metal mounting ring provided by the utility model to carry out the production, manufacture, assembly and use of the sealing ring of the sand suction pump shall fall into the within the protection scope of this patent.

Claims (3)

1. a sand suction pump seal ring, comprise the circular seal ring main body (1) that rubber material is made, the outer ring mouth of seal ring main body (1) is sealing lip, it is characterized in that it also comprises the installing ring (2) of the cylinder annular that a metallic material is made; Described installing ring (2) is arranged at the inner side of the inner ring mouth of seal ring main body (1), and integrally manufactured shaping with seal ring main body (1), and the inner ring mouth of seal ring main body (1) is coated in the outer cylinder of installing ring (2).

2. sand suction pump seal ring as claimed in claim 1, it is characterized in that, the cylinder height of described installing ring (2) is greater than or equal to the thickness of inner ring mouth on pump shaft length direction of seal ring main body (1).

3. sand suction pump seal ring as claimed in claim 2, it is characterized in that, the metallic material of described installing ring (2) is stainless steel or brass.