An outlet sealing structure for a non-explosion-proof shielding pump

Abstract

The utility model discloses a kind of outlet sealing structure for non-explosion-proof shielding pump, including terminal, the terminal inner wall is equipped with labyrinth seal groove, epoxy resin layer is poured at the labyrinth seal groove, and the labyrinth seal groove and epoxy resin layer form labyrinth seal.The utility model is characterized by: the sealing effect is greatly improved using labyrinth seal and composite sealing structure, and color change silica gel hygroscopic agent layer, explosion-proof mortar layer can be overhauled in the routine use maintenance of pump, to realize repairability.

Description

Technical Field

[0001] This utility model relates to the technical field of shielded pumps, specifically to an outlet sealing structure for a non-explosion-proof shielded pump. Background Technology

[0002] Non-explosion-proof shielded pumps, lacking the protective structure of an explosion-proof junction box, offer relatively weak protection against moisture and splashing water in the atmosphere. If moisture or splashing water enters the motor cavity during use, it can cause insulation failure and even motor burnout. Typically, industry-standard wiring protection involves sealing the motor terminals with epoxy resin. However, limitations in epoxy resin injection quality, differences in component thermal expansion due to ambient temperature, external forces, and corrosion of the terminal block's inner surface often lead to seal failure after a period of use. Furthermore, due to the properties of epoxy resin, once it fails, it cannot be repaired. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a non-explosion-proof shielded pump outlet sealing structure.

[0004] The technical solution adopted by this utility model to achieve the above objectives is as follows: A non-explosion-proof shielded pump outlet sealing structure includes a terminal block, the inner wall of which is provided with a labyrinth sealing groove, and an epoxy resin layer is filled into the labyrinth sealing groove, the labyrinth sealing groove and the epoxy resin layer forming a labyrinth seal.

[0005] The epoxy resin layer is provided with a color-changing silicone desiccant layer on the inlet side of the junction box.

[0006] The color-changing silica gel desiccant layer is located on the inlet side of the junction box, and an explosion-proof putty layer is provided.

[0007] The labyrinth sealing groove is an annular groove or a multi-spiral groove.

[0008] The features of this utility model are: the use of a labyrinth seal and a composite seal structure greatly improves the sealing effect, and the color-changing silica gel desiccant layer and the explosion-proof putty layer can be inspected and repaired during the daily use and maintenance of the pump, thus achieving repairability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] The components include: 1. junction box; 11. labyrinth sealing groove; 2. epoxy resin layer; 3. color-changing silica gel desiccant layer; 4. explosion-proof putty layer. Detailed Implementation

[0011] like Figure 1As shown, this utility model is a non-explosion-proof shielded pump outlet sealing structure, including a terminal block 1. A labyrinth sealing groove 11 is formed on the inner wall of the terminal block 1. The labyrinth sealing groove 11 is an annular groove or a multi-spiral groove. An epoxy resin layer 2 is injected into the labyrinth sealing groove 11. The labyrinth sealing groove 11 and the epoxy resin layer 2 form a labyrinth seal, thereby enhancing the adhesion between the epoxy resin layer 2 and the inner wall of the terminal block 1, improving the sealing ability, and preventing seal failure due to thermal expansion and contraction or corrosion. The epoxy resin layer 2 is located on the inlet side of the terminal block 1, where a color-changing silica gel desiccant layer 3 and an explosion-proof putty layer 4 are sequentially arranged. The three form a composite sealing structure, which greatly improves the sealing effect. The color-changing silica gel desiccant layer 3 absorbs moisture and changes color to absorb moisture and indicate the humidity status. The explosion-proof putty layer 4 is explosion-proof, fire-retardant, has good adhesion and strong plasticity, and is used for initial sealing and buffering. The color-changing silica gel desiccant layer 3 and the explosion-proof putty layer 4 can be inspected and repaired during the daily use and maintenance of the pump.

[0012] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-explosion-proof shielded pump outlet sealing structure, characterized in that: The device includes a junction box, the inner wall of which is provided with a labyrinth sealing groove, and an epoxy resin layer is poured into the labyrinth sealing groove, forming a labyrinth seal with the labyrinth sealing groove and the epoxy resin layer.

2. The outlet sealing structure for a non-explosion-proof shielded pump as described in claim 1, characterized in that: The epoxy resin layer is provided with a color-changing silicone desiccant layer on the inlet side of the junction box.

3. The outlet sealing structure for a non-explosion-proof shielded pump as described in claim 2, characterized in that: The color-changing silica gel desiccant layer is located on the inlet side of the junction box, and an explosion-proof putty layer is provided.

4. The outlet sealing structure for a non-explosion-proof shielded pump as described in claim 1, characterized in that: The labyrinth sealing groove is an annular groove or a multi-spiral groove.

Images