CN201121585Y

CN201121585Y - Embedded single mechanical sealing device of mechanical sealing pump

Info

Publication number: CN201121585Y
Application number: CNU2007200753745U
Authority: CN
Inventors: 胡涛; 胡侃; 黄姚林; 周游
Original assignee: SHANGHAI HEYNEW PUMP INDUSTRY Co Ltd
Current assignee: SHANGHAI HEYNEW PUMP INDUSTRY Co Ltd
Priority date: 2007-10-10
Filing date: 2007-10-10
Publication date: 2008-09-24
Anticipated expiration: 2017-10-10

Abstract

The utility model relates to the technical field of mechanical sealing pumps, in particular to a built-in single mechanical sealing device of a mechanical sealing pump, which comprises a main drive shaft, mechanical sealing, a gasket, a sealed seat and a sealed gland bush. The built-in single mechanical sealing device is characterized in that: a neck journal part heaves radially at the right side of the sealed seat 3 is embedded into one end of the single-end mechanical sealing; a sealed surface at the right side of the sealed seat 3 is embedded into the cavity body of a front shell 1 of the mechanical sealing pump; the sealed gland bush 2 is fixed on the front shell 1 by a gland bush screw from the left side of the sealed seat 3; the main drive shaft 4 passes through the sealed gland bush 2, the sealed seat 3 and the axle hole of the single-end mechanical sealing 5. Compared with the prior art, the built-in single mechanical sealing device has simple structure, improves the sealing effect and prolongs the service life.

Description

The built-in type single tool seal arrangement of pump with mechanical seal

[technical field]

The utility model relates to the pump with mechanical seal technical field, specifically a kind of built-in type single tool seal arrangement of pump with mechanical seal.

[background technique]

Present pump with mechanical seal, because the entery and delivery port of sparge water is all on gland, the corrosive liquids of leakage can contact with the pressure spring of mechanical seal, causes compressing spring to be corroded and very fast inefficacy, influences sealing effect and working life.

[summary of the invention]

The purpose of this utility model overcomes the deficiencies in the prior art exactly, adopts built-in mechanical seal structure, improves sealing effect.

For achieving the above object, the built-in type single tool seal arrangement of canned pump designs a mechanism, comprise driving shaft, mechanical seal, packing ring, sealing seat, sealing gland, it is characterized in that: the collar of sealing seat right radial projection embeds an end of single mechanical end face seal, the sealing surface on sealing seat right side embeds in the fore shell cavity of pump with mechanical seal, sealing gland is fixed on the fore shell with the gland screw from sealing seat left side sealing surface, and driving shaft passes the axis hole of sealing gland, sealing seat, single mechanical end face seal.The surface of contact of described sealing seat and fore shell and sealing gland is established a packing ring respectively.

The utility model is compared with prior art, and is simple in structure, improved sealing effect, prolonged working life.

[description of drawings]

Fig. 1 is a generalized section of the present utility model.

Appointment Fig. 1 is a Figure of abstract.

Referring to accompanying drawing 1,1 is fore shell; 2 is sealing gland; 3 is sealing seat; 4 is driving shaft; 5 are single mechanical end face seal; 6 is packing ring.

[embodiment]

Be described further below in conjunction with accompanying drawing.

The collar of the sealing seat 3 right radial projectioies of intermediate projections embeds and connects single mechanical end face seal 5, and be enclosed within on the driving shaft 4 at fore shell place, sealing gland 2 is pressed on sealing seat 3 and single mechanical end face seal 5 on the driving shaft 4 in fore shell 1 cavity, one side sealing face of sealing seat 3 embeds in the fore shell 1, the single mechanical end face seal 5 of connection can not moved with flowing of the liquid that turns round in the pump, sealing seat 3 both sides of intermediate projections and sealing gland 2 are respectively installed a packing ring 6 with fore shell 1 connecting part, prevent that sealing seat 3 and sealing gland 2 and fore shell 1 connecting part are out of shape owing to friction produces damage, and single mechanical end face seal can adopt aviation silicon carbide as material, can tolerate 200-300 ℃ high temperature, thereby guarantee the good sealing effect of pump with mechanical seal.

Because sealing gland has been embedded in sealing seat 3 and has prevented from directly to contact with mechanical seal, in addition, element spring in this single mechanical end face seal and rotating ring are mounted in and contact with medium in the sealed case of mechanical seal, can utilize the interior pressure medium of sealed case to seal, the element of mechanical seal all is in the flowing medium, and the stress of seal face and cooling and lubrication circumstances are good.

Claims

1. the built-in type single tool seal arrangement of a pump with mechanical seal, comprise driving shaft, mechanical seal, packing ring, sealing seat, sealing gland, it is characterized in that: the collar of sealing seat (3) right radial projection embeds an end of single mechanical end face seal (5), the sealing surface on sealing seat (3) right side embeds in fore shell (1) cavity of pump with mechanical seal, sealing gland (2) is fixed on the fore shell (1) with the gland screw from sealing seat (3) left side sealing surface, and driving shaft (4) passes the axis hole of sealing gland (2), sealing seat (3), single mechanical end face seal (5).

2. the built-in type single tool seal arrangement of a kind of pump with mechanical seal as claimed in claim 1 is characterized in that: described sealing seat (3) is established a packing ring (6) respectively with the surface of contact of fore shell (1) and sealing gland (2).