Flange and sealing gasket connecting structure of submersible sewage pump coupler

Abstract

The utility model relates to a submersible sewage pump coupler flange and sealing gasket connecting structure, a sealing surface boss of a coupler flange (1) is provided with a sealing groove (3), the sealing groove (3) is divided into two parts with different inner diameters, and the diameter of the inner part is larger than that of the outer part; the sealing gasket (2) is composed of two parts with different diameters, the small-diameter end of the sealing gasket (2) is equal to the outer diameter of the sealing groove (3), and the large-diameter end of the sealing gasket (2) is smaller than the inner diameter of the sealing groove (3). The large-diameter end of the sealing gasket (2) is placed in the sealing groove (3), and the small-diameter end of the sealing gasket (2) is higher than the sealing surface of the coupler flange (1); due to the structural design of the sealing groove (3), the sealing gasket (2) can be better limited and fixed, and the sealing gasket (2) is prevented from being disengaged. The small-diameter end of the sealing gasket (2) is in contact extrusion with the end face of the water inlet of the coupler base (4), and the sealing effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flange and sealing gasket connecting structure, in particular to a flange and sealing gasket for a submersible sewage pump coupler, belonging to the field of water pump sewage. BACKGROUND

[0002] The submersible sewage pump is placed in water and used for conveying liquid containing hard solid and fiber and particularly dirty, sticky and slippery liquid sewage. The most commonly used installation mode of the submersible sewage pump is coupling type installation, the pump is connected with a pipeline through a coupler, the pump is convenient to separate from a water outlet pipeline, and the water pump can be hoisted through a hoisting device during maintenance, thereby being convenient to maintain.

[0003] The existing submersible sewage pump coupling device mostly sets a self-coupling inclined surface on the coupler flange and the coupler base, vibration and leakage problems are prone to occur during operation, meanwhile, the inclined surface is difficult to process and has high precision, when the inclined surface is processed with deviation, the two inclined surfaces cannot be completely matched, and the sealing effect is affected. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a submersible sewage pump coupler flange and sealing gasket connecting structure.

[0005] The utility model adopts the technical scheme that the sealing surface boss of the coupler flange is provided with a sealing groove, the sealing groove is divided into two parts with different inner diameters, the inner diameter is larger than the outer diameter; the sealing gasket is composed of two parts with different diameters, the small-diameter end of the sealing gasket is equal to the outer diameter of the sealing groove, and the large-diameter end of the sealing gasket is smaller than the inner diameter of the sealing groove.

[0006] The large-diameter end of the sealing gasket is placed in the inner part of the sealing groove, and the small-diameter end of the sealing gasket is higher than the sealing surface of the coupler flange. The structural design of the sealing groove can better limit and fix the sealing gasket and prevent the sealing gasket from falling out. The small-diameter end of the sealing gasket is in contact with and extruded by the water inlet end surface of the coupler base, so that the sealing effect is ensured.

[0007] The utility model has the advantages that the sealing gasket is fixed in the sealing groove of the coupler flange and is not easy to fall off, and the sealing effect is good. DRAWINGS

[0008] Figure 1 It is a sectional view of the flange and sealing gasket assembly drawing of the utility model.

[0009] Figure 2 It is a perspective view of the flange and sealing gasket assembly drawing of the utility model.

[0010] Figure 3 It is a sectional view of the flange and sealing gasket assembly drawing of the utility model.

[0011] Figure 4 is the assembly drawing of the submersible sewage pump and the coupling device.

[0012] In the drawing, 1, coupling flange, 2, sealing gasket, 3, sealing groove, 4, coupling base, 5, submersible sewage pump. DETAILED DESCRIPTION

[0013] The utility model submersible sewage pump coupling flange and sealing gasket connecting structure are described in detail as follows with the drawings.

[0014] As shown in the drawings, the utility model is a kind of submersible sewage pump coupling flange and sealing gasket connecting structure, and the sealing surface boss of coupling flange 1 is provided with a sealing groove 3, and the sealing groove 3 is divided into two parts with different inside diameters, and the inside diameter is greater than the outside diameter;Sealing gasket 2 is composed of two parts with different diameters, and the diameter of the small end of sealing gasket 2 is equal to the diameter of the outside of sealing groove 3, and the diameter of the large end of sealing gasket 2 is less than the diameter of the inside of sealing groove 3.The large end of sealing gasket 2 is placed in the inside of sealing groove 3, and the small end of sealing gasket 2 is higher than the sealing surface of coupling flange 1.The structure design of sealing groove 3 can better limit and fix sealing gasket 2, to prevent sealing gasket 2 from coming out.

[0015] Coupling flange 1 and the water outlet of submersible sewage pump 5 are connected together by bolts, and are automatically coupled and connected along guide rail and fixed coupling base 4 at the bottom, the small end of sealing gasket 2 is in contact with the water inlet end surface of coupling base 4 and is extruded, to ensure sealing effect.Sealing gasket 2 of the utility model is fixed in the sealing groove 3 of coupling flange 1, and is not easy to fall off, and has good sealing effect.

[0016] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coupling flange and gasket connection structure for a submersible sewage pump, characterized by: The sealing surface boss of the coupling flange (1) is provided with a sealing groove (3), the sealing groove (3) is divided into two parts with different inner diameters, the inner diameter is larger than the outer diameter; the sealing gasket (2) is composed of two parts with different diameters, the diameter of the small end of the sealing gasket (2) is equal to the outer diameter of the sealing groove (3), the diameter of the large end of the sealing gasket (2) is smaller than the inner diameter of the sealing groove (3); the large end of the sealing gasket (2) is placed in the inner part of the sealing groove (3).

2. The submersible waste pump coupling flange and gasket connection of claim 1, wherein: The small end of the sealing gasket (2) is in contact with the water inlet end surface of the coupling base (4) and is extruded.

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