CN210715154U

CN210715154U - Submersible sewage pump with auxiliary sand prevention seal

Info

Publication number: CN210715154U
Application number: CN201921081850.3U
Authority: CN
Inventors: 吴永旭; 蔡奎义
Original assignee: Shanghai Oriental Pump Group Nantong Co Ltd
Current assignee: Shanghai Oriental Pump Group Nantong Co Ltd
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-06-09
Anticipated expiration: 2029-07-11

Abstract

A submersible sewage pump with auxiliary sand control seal comprises a pump seat, a pump body, a pump cover, an oil chamber, a cooling water jacket, an upper end cover and a lifting device which are connected in sequence, wherein a motor with a shell is installed in the cooling water jacket; be provided with lip sealing device between motor shaft and the pump cover, lip sealing device includes an organic whole skeleton and a plurality of lips of connecting, the lip slant is connected in the skeleton inboard down, and the lip is held tightly in motor shaft, is encapsulated situation. Compared with the prior art, the utility model discloses a take sealed submersible sewage pump of supplementary sand control can effectually block suspended solid, silt particle, the large granule thing in the sewage through lip sealing device, prevents that they from getting into grease chamber mechanical seal mouth, and water pressure and impact force are big more moreover, and sealed effect is better.

Description

Submersible sewage pump with auxiliary sand prevention seal

Technical Field

The utility model relates to a pump field specifically indicates a take sealed submersible sewage pump of supplementary sand control.

Background

The submersible sewage pump is mainly suitable for the industries of municipal engineering, industry and agriculture, hospitals, buildings, hotels and the like, is used for conveying solid particles and wastewater of various long fibers, urban domestic sewage and rainwater, and also comprises the conveyance of raw water, aquaculture, irrigation and the like; because the submersible sewage pump is mainly applied to sewage occasions, the components in sewage are complex, the content of silt in most of sewage is large, when the pump runs at high speed, because a double-end-face mechanical seal is adopted, solid particles (silt) of media leak into an oil chamber cavity through a gap between a shaft and the pump cover due to the action of centrifugal force (the pressure intensity of a cavity formed by the pump cover and an impeller is larger than that of the oil chamber cavity), thereby damaging the moving ring and the static ring of the mechanical seal, further leading sewage to enter a motor cavity and burning out a motor, therefore, the pump unit with the structure has unstable running, high repair rate and necessary improvement.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and provides a take sealed submersible sewage pump of supplementary sand control.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a submersible sewage pump with auxiliary sand control seal comprises a pump seat, a pump body, a pump cover, an oil chamber, a cooling water jacket, an upper end cover and a lifting device which are connected in sequence, wherein a motor with a shell is installed in the cooling water jacket; the outer side of a motor rotating shaft at the upper end of the pump cover is sleeved with a mechanical seal; be provided with lip sealing device between motor shaft and the pump cover, lip sealing device includes an organic whole skeleton and a plurality of lips of connecting, the lip slant is connected in the skeleton inboard down, and the lip is held tightly in motor shaft, is encapsulated situation.

Furthermore, the lip-shaped sealing device is made of polytetrafluoroethylene.

Furthermore, the upper end of the upper end cover is connected with a junction box cover, and junction boxes are arranged in the upper end cover and the junction box cover.

Furthermore, a second bearing is arranged between the outer side of the middle lower end of the motor rotating shaft and the oil chamber.

Furthermore, an oil-water probe and a leakage floating ball are respectively arranged on the left side and the right side in the oil chamber.

Further, the impeller is arranged in the pump body.

Compared with the prior art, the submersible sewage pump with the auxiliary sand control seal can effectively block suspended matters, silt and large particles in sewage through the lip-shaped sealing device, prevent the suspended matters, the silt and the large particles from entering a mechanical sealing port of an oil chamber and damaging a movable ring and a static ring of the mechanical seal, so that a motor is burnt out, and the larger the water pressure and the impact force are, the better the sealing effect is; the lip-shaped sealing device reduces the repair rate of the submersible pump, improves the operation efficiency of the unit, reduces the cost and prolongs the service life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the lip seal attachment of the present invention;

the oil-water leakage pump comprises a pump base 1, a pump body 2, a pump body 3, a pump cover 4, an oil chamber 5, a cooling water jacket 6, an upper end cover 7, a hoisting device 8, a motor 9, a bearing I, a bearing II, a bearing 10, an impeller 11, a mechanical seal 12, a lip seal device 121, a framework 122, a lip opening 13, a junction box cover 14, a junction box 15, a bearing II, a bearing 16, an oil-water probe 17 and a leakage floating ball.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 and 2, the submersible sewage pump with the auxiliary sand control seal comprises a pump base 1, a pump body 2, a pump cover 3, an oil chamber 4, a cooling water jacket 5, an upper end cover 6 and a hoisting device 7 which are connected in sequence, wherein a motor 8 with a shell is installed in the cooling water jacket 5, the upper end of a rotating shaft of the motor 8 is rotatably connected to the lower end of the upper end cover 6 through a bearing I9, and in the embodiment, the bearing I9 is a deep groove ball bearing; the lower end of a rotating shaft of the motor 8 sequentially penetrates through the oil chamber 4 and the pump cover 3 to be connected with an impeller 10; and the outer side of a rotating shaft of a motor 8 at the upper end of the pump cover 3 is sleeved with a mechanical seal 11.

A lip-shaped sealing device 12 is arranged between the rotating shaft of the motor 8 and the pump cover 3, the lip-shaped sealing device 12 comprises a framework 121 and a plurality of lips 122 which are integrally connected, the lips 122 are obliquely and downwards connected to the inner side of the framework 121, and the lips 122 are tightly held on the rotating shaft of the motor 8 and are in a sealing state; through lip sealing device 12 can effectually keep off suspended solid, silt particle, the large granule thing of blocking in the sewage, prevent that they from getting into grease chamber mechanical seal mouth, damage mechanical seal 11 move, quiet ring to burn out motor 8, and water pressure and impact force are big more moreover, and sealed effect is better.

The lip-shaped sealing device 12 is made of polytetrafluoroethylene, and the material is wear-resistant and corrosion-resistant, so that the service life of the lip-shaped sealing device 12 is prolonged.

The upper end of the upper end cover 6 is connected with a junction box cover 13, and a junction box 14 is arranged in the upper end cover 6 and the junction box cover 13.

A second bearing 15 is arranged between the outer side of the middle lower end of the rotating shaft of the motor 8 and the oil chamber 4, and in the embodiment, the second bearing 15 adopts an angular contact ball bearing.

An oil-water probe 16 and a leakage floating ball 17 are respectively arranged at the left side and the right side in the oil chamber 4.

The impeller 10 is disposed in the pump body 2.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.

Claims

1. A submersible sewage pump with auxiliary sand control seal comprises a pump seat, a pump body, a pump cover, an oil chamber, a cooling water jacket, an upper end cover and a lifting device which are connected in sequence, wherein a motor with a shell is installed in the cooling water jacket; mechanical seal, its characterized in that have been cup jointed in the motor shaft outside of pump cover upper end: be provided with lip sealing device between motor shaft and the pump cover, lip sealing device includes an organic whole skeleton and a plurality of lips of connecting, the lip slant is connected in the skeleton inboard down, and the lip is held tightly in motor shaft, is encapsulated situation.

2. The submersible sewage pump with the auxiliary sand control seal according to claim 1, wherein: the lip-shaped sealing device is made of polytetrafluoroethylene.

3. The submersible sewage pump with the auxiliary sand control seal according to claim 1, wherein: the upper end of the upper end cover is connected with a junction box cover, and junction boxes are arranged in the upper end cover and the junction box cover.

4. The submersible sewage pump with the auxiliary sand control seal according to claim 1, wherein: and a second bearing is arranged between the outer side of the middle lower end of the motor rotating shaft and the oil chamber.

5. The submersible sewage pump with the auxiliary sand control seal according to claim 1, wherein: and an oil-water probe and a leakage floating ball are respectively arranged on the left side and the right side in the oil chamber.

6. The submersible sewage pump with the auxiliary sand control seal according to claim 1, wherein: the impeller is arranged in the pump body.