A seal ring structure capable of destroying the inlet vortex of a double-suction pump impeller

Abstract

A kind of sealing ring structure that can destroy the inlet vortex of double-suction pump impeller, including positioning outer circle, the half side of positioning outer circle is processed with a section of flow guide circular arc, and the circular arc flanging for destroying vortex extending to the outside of positioning outer circle is processed on flow guide circular arc.Compared with prior art, the sealing ring structure that can destroy the inlet vortex of double-suction pump impeller of the utility model, the circular arc flanging on flow guide circular arc destroys the inlet vortex of double-suction pump impeller, improves the flow state of medium in impeller, improves the performance of water pump, and its simple structure, easy to install.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically to a sealing ring structure that can disrupt the inlet vortex of a double-suction pump impeller. Background Technology

[0002] Double-suction pumps, with their large flow rate and high efficiency, are widely used in industrial circulating water systems. The pumps transport the medium within the process unit to cool various equipment. The medium is ultimately delivered to the top of the cooling tower and then sprayed back to the pump's inlet pool (the pump is installed below the cooling tower), thus continuously circulating and cooling the system. Due to heat exchange and the backflow spraying effect, the medium returning to the pump's inlet pool has a high air content and many vortices. These vortices can be drawn into the pump chamber, severely affecting pump performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a sealing ring structure that can destroy the inlet vortex of the impeller of a double-suction pump, in order to address the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A sealing ring structure capable of destroying the inlet vortex of a double-suction pump impeller includes a positioning outer circle, half of which is machined with a guide arc, and the guide arc is machined with an arc flange extending outward from the positioning outer circle for destroying the vortex.

[0005] Furthermore, a positioning boss is machined on the same side of the positioning outer circle and the guide arc, and a hollow groove is machined on the other half of the positioning outer circle corresponding to the position of the positioning boss.

[0006] Furthermore, the two ends of the arc-shaped flange are lower than the horizontal plane of the center axis of the positioning outer circle, and the angle between the two ends of the arc-shaped flange and the horizontal plane of the center axis of the positioning outer circle is 10°~20°.

[0007] Furthermore, the two ends of the positioning boss are 5-10mm lower than the horizontal plane of the center axis of the positioning outer circle.

[0008] Compared with the prior art, the sealing ring structure of this utility model can destroy the inlet vortex of the double-suction pump impeller. By destroying the inlet vortex of the double-suction pump impeller through the arc flange on the guide arc, the flow state of the medium inside the impeller is improved, the pump performance is enhanced, and its structure is simple and easy to install. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the sealing ring installation structure of this utility model; Figure 3 This is a diagram showing the working state of the sealing ring of this utility model; Among them, 1. positioning outer circle, 2. flow guide arc, 3. arc flange, 4. positioning boss, 5. hollow knife groove, 6. pump casing, 7. pump cover, 8. positioning groove, 9. sealing surface, 10. impeller, 11. mouth ring, 12. vortex. Detailed Implementation

[0010] The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0011] like Figure 1 As shown, a sealing ring structure capable of destroying the inlet vortex of a double-suction pump impeller includes a positioning outer circle 1. The lower half of the positioning outer circle 1 is machined with a flow guiding arc 2. The flow guiding arc 2 is machined with an arc flange 3 extending outward from the positioning outer circle 1 for destroying the vortex. In this embodiment, in order to prevent the arc flange 3 from interfering with the pump cover during installation, the two ends of the arc flange 3 are lower than the horizontal plane of the central axis of the positioning outer circle 1, and the angle b between the two ends of the arc flange 3 and the horizontal plane of the central axis of the positioning outer circle 1 is 10°~20°.

[0012] A positioning boss 4 is machined on one half of the positioning outer circle 1 and the same side as the guide arc 2. A hollow groove 5 is machined on the other half of the positioning outer circle 1 corresponding to the position of the positioning boss 4. In this embodiment, in order to prevent the positioning boss 4 from interfering with the pump cover during installation, the two ends of the positioning boss 4 are lower than the horizontal plane of the central axis of the positioning outer circle 1, and the distance H between the two ends of the positioning boss 4 and the horizontal plane of the central axis of the positioning outer circle 1 is 5~10mm.

[0013] like Figure 2 As shown, the sealing ring is installed inside the pump casing 6 and the pump cover 7. The positioning boss 4 of the sealing ring cooperates with the positioning groove 8 on the pump casing 6 to position the sealing ring. The sealing surface 9 of the inner ring of the sealing ring cooperates with the mouth ring 11 of the impeller 10 to seal. The outer diameter of the positioning outer circle 1 of the sealing ring is matched with the inner diameter of the pump casing 6.

[0014] like Figure 3 As shown, when the water pump is running, the medium enters the impeller 7 along the arc flange 3, which can effectively destroy the vortex 12 in the medium, make the pressure distribution at the inlet of the impeller 10 more uniform, make the medium flow more smoothly, improve the water inlet conditions of the impeller 10, and improve the performance of the water pump.

[0015] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.

Claims

1. A sealing ring structure capable of disrupting the inlet vortex of a double-suction pump impeller, characterized in that: This includes a positioning outer circle, half of which is machined with a guide arc, and the guide arc is machined with an arc flange extending outward from the positioning outer circle to break the vortex.

2. The sealing ring structure capable of disrupting the inlet vortex of a double-suction pump impeller according to claim 1, characterized in that: A positioning boss is machined on the same side of the positioning outer circle and the guide arc, and a hollow groove is machined on the other half of the positioning outer circle corresponding to the position of the positioning boss.

3. The sealing ring structure capable of disrupting the inlet vortex of a double-suction pump impeller according to claim 1, characterized in that: The two ends of the arc flange are lower than the horizontal plane of the center axis of the positioning outer circle, and the angle between the two ends of the arc flange and the horizontal plane of the center axis of the positioning outer circle is 10°~20°.

4. The sealing ring structure capable of disrupting the inlet vortex of a double-suction pump impeller according to claim 2, characterized in that: The two ends of the positioning boss are 5-10mm below the horizontal plane of the center axis of the positioning outer circle.

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