A convenient installation structure for a submersible sewage pump with a water-cooled jacket

Abstract

This utility model designs a convenient installation structure for a submersible sewage pump using a water-cooled jacket, including a submersible motor, a connecting base, a cooling jacket, a first O-ring, and a second O-ring. The cooling jacket is fitted over the submersible motor housing. A fixing ring is fixed to the upper surface of the cooling jacket. The first O-ring is located at the intersection of the inner side of the cooling jacket, the submersible motor housing, and the fixing ring. The bottom of the cooling jacket abuts against the outwardly flared annular surface of the connecting base. A second O-ring is located at the inner corner of the inner side of the cooling jacket and the outwardly flared annular surface of the connecting base. The advantage of this utility model is that the main highlight of this new structure is changing the position of the first O-ring from the housing to the upper ring of the cooling jacket. A fixing ring is added, and a second screw is used to connect the fixing ring and the upper ring, causing the first O-ring to deform. After deformation, the first O-ring fills the gaps between itself, the housing, the upper ring, and the fixing ring.

Description

Technical Field

[0001] This utility model relates to a convenient installation structure for a water-cooled jacket on a submersible sewage pump. Background Technology

[0002] When a submersible sewage pump is pumping at a lower liquid level, the submersible motor needs to be equipped with a water-cooled jacket to provide cooling medium around the motor. The conventional water-cooled jacket is sealed at the upper end to the pump housing and at the lower end to the connecting seat. See the standard structure section for details. Figure 1 21 First O-ring, 22 Housing, 23 Cooling jacket, 24 Second O-ring, 25 Connecting seat, 26 Screw. All sealing points use O-rings for sealing. When the upper end of the cooling jacket seals with the housing, the O-ring provides a radial seal. During the downward pressing of the water cooling jacket, it touches the first O-ring. From contact to installation, the pressing length is 20 to 30 mm. Since the first O-ring has already deformed and filled the gap between the housing and the cooling jacket, the final pressing length of 20 to 30 mm for the water cooling jacket installation is time-consuming and laborious. There is an urgent need to innovate a new structure to solve the problem of difficult water cooling jacket installation. Summary of the Invention

[0003] This utility model addresses the aforementioned problems existing in the installation of water-cooled jackets for submersible motors in submersible sewage pumps, and provides a convenient installation structure for submersible sewage pumps using water-cooled jackets. This utility model designs a convenient installation structure for submersible sewage pumps using water-cooled jackets, including a submersible motor, a connecting base, a cooling jacket, a first O-ring, and a second O-ring. The cooling jacket is fitted over the submersible motor housing; a fixing ring is fixed to the upper end face of the cooling jacket; a first O-ring is provided at the intersection of the inner side of the cooling jacket and the submersible motor housing and fixing ring; the bottom of the cooling jacket abuts against the outwardly flared annular surface of the connecting base; and a second O-ring is provided at the inner corner of the inner side of the cooling jacket and the outwardly flared annular surface of the connecting base. The cooling jacket is a cylindrical body with several through joints on its wall. An upper barrel ring is located at the top of the cylinder, with a first O-ring groove on its inner side. An mounting bracket is located at the upper end of the first O-ring groove, which serves as the placement position for the first O-ring. The bottom side of the first O-ring groove forms the inner ring of the upper barrel ring, which fits into the submersible motor housing. A lower barrel ring is located at the bottom top of the cylinder, with a second O-ring groove on its inner side. The top side of the second O-ring groove forms the inner ring of the lower barrel ring, which also fits into the submersible motor housing. The second O-ring groove serves as the placement position for the second O-ring. A retaining ring is fixedly connected to the top surface of the cooling jacket by a second screw passing through a through hole in the retaining ring. The bottom surface of the cooling jacket is fixedly connected to the outer annular surface of the connecting seat by a first screw passing through a through hole in the connecting seat. The advantages of this invention are as follows: The main highlight of this new structure is the change in the position of the first O-ring, from the housing to the upper barrel ring of the cooling jacket. A fixing ring is added, and a second screw is used to connect the fixing ring and the upper barrel ring, causing the first O-ring to deform. After deformation, the first O-ring fills the gaps between itself, the housing, the upper barrel ring, and the fixing ring. Since the O-ring is inserted after the cooling jacket is installed, the original structure's problem of the upper O-ring obstructing the downward pressing of the cooling jacket is eliminated. Furthermore, because the first O-ring is a radial sealing structure, its pre-deformation size is larger than its radial size. A mounting angle for the first O-ring groove is provided to facilitate axial pressing of the first O-ring. Attached Figure Description

[0004] Figure 1 This is a schematic diagram of the existing technology.

[0005] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0006] Figure 3 for Figure 1 Enlarged schematic diagram of part B.

[0007] Figure 4 This is a schematic diagram of the structure of this utility model.

[0008] Figure 5 for Figure 4Enlarged schematic diagram of part C.

[0009] Figure 6 for Figure 4 Enlarged schematic diagram of part D.

[0010] Figure 7 This is a schematic diagram of the structure of the fixing ring of this utility model.

[0011] Figure 8 This is a schematic diagram of the cooling jacket of this utility model.

[0012] Figure 9 for Figure 8 Enlarged schematic diagram of part E.

[0013] Figure 10 for Figure 8 Enlarged schematic diagram of part F. Detailed Implementation

[0014] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0015] The figure shows a convenient installation structure for a submersible sewage pump using a water-cooled jacket, including a submersible motor 1, a connecting seat 2, a cooling jacket 3, a first O-ring 4, and a second O-ring 5. The cooling jacket is fitted over the submersible motor housing. A fixing ring 6 is fixed to the upper end face of the cooling jacket. A first O-ring is provided at the intersection of the inner side of the cooling jacket and the submersible motor housing and the fixing ring. The bottom of the cooling jacket abuts against the outwardly flared annular surface 7 of the connecting seat. A second O-ring is provided at the inner corner of the inner side of the cooling jacket and the outwardly flared annular surface of the connecting seat. The cooling jacket is a cylindrical body with several through joints 8 on its wall. An upper barrel ring 9 is located at the top of the cylindrical body. A first O-ring groove 10 is formed on the inner side of the upper barrel ring, and an installation guide 11 is provided at the upper end of the first O-ring groove. The first O-ring groove is the placement position for the first O-ring. The bottom side of the first O-ring groove is the inner ring 12 of the upper barrel ring, which fits into the submersible motor housing. A lower barrel ring 13 is located at the bottom top of the cylindrical body. A second O-ring groove 14 is formed on the inner side of the lower barrel ring, and the top side of the second O-ring groove is the inner ring 15 of the lower barrel ring, which fits into the submersible motor housing. The second O-ring groove is the placement position for the second O-ring. A retaining ring is fixedly connected to the top surface of the cooling jacket by a second screw 16 passing through a through hole 17 on the retaining ring. The bottom surface of the cooling jacket is fixedly connected to the outer annular surface of the connecting seat by a first screw 18 passing through a through hole 19 on the outer annular surface of the connecting seat.

[0016] An installation guide is provided at the upper end of the first O-ring groove of the upper barrel ring to facilitate the axial pressing of the first O-ring into the first O-ring placement position (the first O-ring groove).

[0017] During installation, the second O-ring is fitted onto the inner corner of the outer annular surface of the connecting seat, and the cooling jacket is pressed in. The first screw is used to connect the connecting seat to the lower ring of the cooling jacket, completing the seal at the second O-ring. The first O-ring is inserted into the first O-ring groove of the upper ring of the cooling jacket, and a retaining ring is inserted into the upper ring of the cooling jacket. The second screw is used to connect the retaining ring to the upper ring of the cooling jacket. When the tightening force presses down the retaining ring, the first O-ring is pressed into its insertion position through the first O-ring mounting lead, completing the seal of the housing, retaining ring, and cooling jacket.

Claims

1. A convenient installation structure for a submersible sewage pump using a water-cooled jacket, comprising a submersible motor, a connecting base, a cooling jacket, a first O-ring, and a second O-ring, characterized in that... The cooling jacket is fitted over the submersible motor housing. A retaining ring is fixed to the upper end face of the cooling jacket. A first O-ring is provided at the intersection of the inner side of the cooling jacket, the submersible motor housing, and the retaining ring. The bottom of the cooling jacket abuts against the outwardly flared annular surface of the connecting seat. A second O-ring is provided at the inner corner of the inner side of the cooling jacket and the outwardly flared annular surface of the connecting seat.

2. The convenient installation structure of the water-cooled jacket for the submersible sewage pump according to claim 1, characterized in that, The cooling jacket is a cylindrical body with several through joints on its wall. An upper barrel ring is provided at the top of the cylindrical body, and a first O-ring groove is provided on the inner side of the upper barrel ring. An installation lead is provided at the upper end of the first O-ring groove, which is the placement position for the first O-ring. The bottom side of the first O-ring groove is the inner ring of the upper barrel ring, which fits into the submersible motor housing. A lower barrel ring is provided at the bottom top of the cylindrical body, and a second O-ring groove is provided on the inner side of the lower barrel ring. The top side of the second O-ring groove is the inner ring of the lower barrel ring, which fits into the submersible motor housing. The second O-ring groove is the placement position for the second O-ring.

3. The convenient installation structure of the water-cooled jacket for the submersible sewage pump according to claim 1 or 2, characterized in that, The retaining ring is fixedly connected to the top surface of the cooling jacket by a second screw passing through the through hole on the retaining ring, and the bottom surface of the cooling jacket is fixedly connected to the outer circular surface of the connecting seat by a first screw passing through the through hole on the outer circular surface of the connecting seat.

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