CN202032092U

CN202032092U - Balance type double-end face mechanical seal with multiple external springs

Info

Publication number: CN202032092U
Application number: CN2010205958090U
Authority: CN
Inventors: 张永安; 张宝; 张兵; 袁郑
Original assignee: Tianchang City Sanyi Electric Motor & Pump Mechanical Seal Co Ltd; Anhui Sanyi Electric Motor & Pump Co Ltd
Current assignee: Tianchang City Sanyi Electric Motor & Pump Mechanical Seal Co Ltd; Anhui Sanyi Electric Motor & Pump Co Ltd
Priority date: 2010-11-08
Filing date: 2010-11-08
Publication date: 2011-11-09
Anticipated expiration: 2020-11-08

Abstract

A balance type double-end face mechanical seal with multiple external springs is composed of springs, a restrictor ring, two dynamic rings and two static rings. A number of springs as required are uniformly distributed inside a spring clamping seat outside a pump chamber. The spring clamping seat is fixed on a pump body. In this way, the springs are prevented from being worn and corroded by materials. The multiple uniformly distributed small springs which perform no rotation along with a pump are prevented from degrading performances due to influences of rotating centrifugal force. Furthermore, by adopting a double-end face sealing way and respectively equipping a dynamic ring and a static ring on the inner seal end face and the outer seal end face, the mechanical seal is enabled to significantly lower the pressure borne by a sealing member through the balance sealing way and reduce the heat generated on the sealing member. The sealing performance of the mechanical seal is greatly improved. The improved sealing performance makes the running of equipments more stable and reinforces the pressure-resistant and shock-resistant performances of equipments. The service lifetime of the sealing member is prolonged. The overall sealing effects are significantly improved.

Description

The mechanical seal of the external many springs Double End of a kind of balance type formula

Technical field

The utility model relates to the mechanical seal of the external many springs Double End of a kind of balance type formula.

Background technique

The outlet port of product pump is design of Sealing Structure all usually, traditional sealing means adopts single face more, the sealing of big spring formula, it is bigger that this kind sealing means makes sealing part bear pressure, the generation heat is more, influence Sealing performance and working life, and the spring multidigit is in pump chamber, therefore make spring be subject to the wearing and tearing and the corrosion of material, and spring rotates with pump shaft, be subjected to the influence of centrifugal force easily, and then elastic performance weakens, influence sealability, the single face sealing also makes whole structure reduce, and causes the damage of Sealing and the leakage of the pump housing easily.

The model utility content

The utility model provides the mechanical seal of the external many springs Double End of a kind of balance type formula, can well solve the spring performance that the conventional seals mode causes easily reduces, be subject to the shortcoming of material burn into wearing and tearing, and balance the pressure of sealing part, make sealing part produce heat and reduce the performance and the working life of having improved Sealing.

For achieving the above object, by the following technical solutions:

The mechanical seal of the external many springs Double End of a kind of balance type formula, its composition comprises snap ring, spring seat, spring, restrictor ring, rotating seat, two rotating rings and two stationary rings, described rotating seat is sleeved on the pump shaft, spring is distributed on pump chamber and is sleeved on outward in the spring seat on the rotating seat, spring seat is fastened on the snap ring by screw, snap ring is clamped on the pump housing, avoided spring to suffer the wearing and tearing and the corrosion of material like this, and uniform a plurality of little spring, and spring seat does not rotate with pump shaft, avoid spring to be subjected to the influence of rotary centrifugal force and reduced performance, make equipment operation more steady, withstand voltage and shock resistance strengthens, improve the life-span of Sealing, made integral sealing effect promote greatly.

Further, sealing mode employing double seals, at the sealing interior edge face, rotating seat is sleeved on the pump shaft, rotate with pump shaft, first rotating ring is clamped on the rotating seat, servo-actuated ring seat and pump shaft rotate together, and one first stationary ring is installed thereafter, between the inside and outside seal face restrictor ring are arranged, at the sealed outer end face, spring evenly arranges and is installed in the spring seat have second rotating ring chucking to be sleeved on outside the rotating seat in it, and there have one second stationary ring to be sleeved on rotating seat on the pump shaft to be outer and be clamped on the pump housing, the external many springs Double End of this kind balance type formula mechanical seal two end faces inside and outside pump shaft all are provided with sealing configuration, balance in, pressure outside has greatly reduced the pressure that Sealing need bear, and has reduced the heat that the Sealing place produces, improve the working life of Sealing, make sealability promote greatly.

Description of drawings

According to embodiment and accompanying drawing the utility model is described in further detail below.

Fig. 1 is the concrete application sectional view of the external many springs Double End of a kind of balance type described in the utility model formula mechanical seal;

Among the figure:

1, spring; 2, first rotating ring; 3, first stationary ring; 4, restrictor ring; 5, second stationary ring; 6, second rotating ring; 7, pump shaft; 8, rotating seat; 9, spring deck; 10, snap ring; 11, screw; 12, the pump housing.

Embodiment

As shown in Figure 1, provided a specific embodiment of the external many springs Double End of a kind of balance type described in the utility model formula mechanical seal, among the figure, screw 11 tightens together snap ring 10 and spring seat 9, snap ring 10 is clamped on the pump housing 12, at the sealing interior edge face, described rotating seat 8 is sleeved on the pump shaft 7, second rotating ring 6 is clamped on the rotating seat 8, second stationary ring 5 is installed thereafter, between the inside and outside seal face restrictor ring 4 is arranged, at the sealed outer end face, described spring 1 evenly arranges and is installed in the spring seat 9 have first rotating ring, 2 chuckings to be sleeved on outside the rotating seat 8 in it successively, first stationary ring 3 is sleeved on outside the rotating seat 8 and is clamped on the pump housing 12, has realized the balance type double seals like this.

Claims

1. the external many springs Double End of balance type formula mechanical seal, its composition comprises spring (1), first rotating ring (2), first stationary ring (3), restrictor ring (4), second stationary ring (5), second rotating ring (6), pump shaft (7), rotating seat (8), spring seat (9), snap ring (10), screw (11), the pump housing (12), it is characterized in that, be set with rotating seat (8) on the described pump shaft (7), described first stationary ring (3) and second stationary ring (5) and first rotating ring (2) second rotating rings (6) are sleeved on outside the rotating seat (8), and are clamped on the pump housing (12); Snap ring (10) is housed on the pump housing, and the spring seat (9) in the snap ring (10) is sleeved on the rotating seat (8) on the pump shaft (7).

2. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that, is equipped with sealing configuration in the inside and outside both ends of the surface of pump shaft (7).

3. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that described spring seat (9) is positioned at outside the pump chamber, and spring (1) evenly is installed on the spring seat (9).

4. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that described screw (11) tightens together snap ring (10) and spring seat (9), and snap ring (10) is clamped on (12) on the pump housing.

5. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that described rotating seat (8) is sleeved on the pump shaft (7), rotates with pump shaft (7).

6. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that described first rotating ring (2) and second rotating ring (6) all are clamped on the rotating seat (8), and servo-actuated ring seat (8) and pump shaft (7) rotate together.

7. the mechanical seal of the external many springs Double End of a kind of balance type according to claim 1 formula is characterized in that, described first stationary ring (3) and second stationary ring (5) all are sleeved on outside the rotating seat (8) on the pump shaft (7), and are fastened on the pump housing (12).