Spiral groove type impeller wear ring sealing structure

Abstract

The utility model relates to the technical field of centrifugal pumps, and aims to provide a spiral groove type impeller wear ring sealing structure which comprises an impeller wear ring and a sealing ring matched with the impeller wear ring, and a spiral groove is formed in the inner surface of the sealing ring. The high-wear-resistant material is adopted, so that the washing of liquid can be effectively resisted, and the service life is prolonged; meanwhile, due to the guiding effect of the spiral groove, a high-pressure area and a low-pressure area are formed at the outlet end and the inlet end, so that liquid cannot leak from the inside of the pump, and the sealing performance is greatly improved; in addition, the spiral groove type wear ring sealing element is suitable for various high-temperature, high-pressure, high-viscosity or corrosive environments and has wide applicability; in addition, only regular inspection and replacement of the spiral groove type wear ring sealing element are needed, maintenance is convenient, and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a spiral groove impeller ring sealing structure. Background Art

[0002] Centrifugal pumps are widely used in various industrial fields, and their high efficiency in conveying liquids has been widely recognized. However, the sealing effect of centrifugal pumps often affects their performance and efficiency. In centrifugal pumps, the impeller ring seal structure has an important influence on the performance and efficiency of the pump. Traditional impeller ring seal structures usually adopt flat or grooved designs, which may fail due to wear or corrosion in long-term use, resulting in reduced pump performance and increased maintenance costs. Therefore, the development of a new impeller ring seal structure is an urgent need for current technological development. Utility Model Content

[0003] The utility model aims to provide a spiral groove impeller mouth ring sealing structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A spiral groove impeller mouth ring sealing structure comprises an impeller mouth ring and a sealing ring matched with the impeller mouth ring, wherein the inner surface of the sealing ring is provided with a spiral groove.

[0006] The outer side wall of the impeller ring is in close contact with the inner side wall of the pump casing at the inlet of the centrifugal pump.

[0007] The inner side wall of the impeller mouth ring is in close contact with the outer surface of the sealing ring.

[0008] The inner side surface of the spiral groove is in close contact with the outer side wall of the impeller.

[0009] The sealing ring is made of stainless steel or wear-resistant alloy steel.

[0010] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] 1) Good wear resistance: The spiral groove mouth ring seal is made of highly wear-resistant materials, which can effectively resist the erosion of liquid and extend the service life;

[0012] 2) Excellent sealing performance: Due to the guiding effect of the spiral groove, high-pressure areas and low-pressure areas are formed at the outlet and inlet ends, making it impossible for liquid to leak from the pump, greatly improving the sealing performance;

[0013] 3) Strong adaptability: Spiral groove ring seals are suitable for various high temperature, high pressure, high viscosity or corrosive environments and have a wide range of applicability;

[0014] 4) Easy maintenance: Only the spiral grooved mouth ring seal needs to be checked and replaced regularly, which is convenient for maintenance and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model.

[0016] Serial numbers and names of the accompanying drawings: impeller mouth ring 1, sealing ring 2, impeller 3. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 As shown, the utility model describes a spiral groove impeller mouth ring sealing structure, comprising an impeller mouth ring 1 and a sealing ring 2 matched with the impeller mouth ring 1, the inner surface of the sealing ring 2 is provided with a spiral groove, the use of the spiral groove can effectively improve the sealing performance and wear resistance and corrosion resistance of the pump.

[0020] A method for manufacturing a spiral groove impeller ring sealing structure comprises the following steps:

[0021] 1) Select materials with excellent wear resistance and corrosion resistance to prepare sealing ring blanks;

[0022] 2) Precision machining the blank to form a spiral groove outer surface;

[0023] 3) Perform surface treatment on the processed sealing ring to enhance its wear resistance and corrosion resistance.

[0024] The working principle of the utility model is:

[0025] First, according to the size of the impeller mouth ring 1 of the centrifugal pump, select the appropriate material to make the spiral groove mouth ring seal. Generally, stainless steel and wear-resistant alloy steel materials are selected. Then, install the spiral groove mouth ring seal at the inlet end of the centrifugal pump to ensure that it fits tightly with the impeller 3 and the inner wall of the pump housing. Next, start the centrifugal pump and let the liquid flow in the spiral groove mouth ring seal. Under the guidance of the spiral groove, the liquid forms a high-pressure area at the outlet end and a low-pressure area at the inlet end. In this way, the liquid cannot leak from the pump, which greatly improves the sealing performance. At the same time, the wear of the spiral groove mouth ring seal should be checked regularly. If severe wear is found, it should be replaced in time. At the same time, the inside of the centrifugal pump should be kept clean to prevent debris from damaging the seal. When the spiral groove mouth ring seal is worn to a certain extent, the operation of the centrifugal pump should be stopped and a new spiral groove mouth ring seal should be replaced.

Claims

1. A spiral groove impeller ring sealing structure, characterized in that: It comprises an impeller mouth ring (1) and a sealing ring (2) matched with the impeller mouth ring (1), wherein the inner surface of the sealing ring (2) is provided with a spiral groove; The outer side wall of the impeller mouth ring (1) is in close contact with the inner side wall of the pump casing at the inlet of the centrifugal pump; The inner side wall of the impeller mouth ring (1) is in close contact with the outer surface of the sealing ring (2); The inner side surface of the spiral groove is in close contact with the outer side wall of the impeller (3).

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