CN201461525U

CN201461525U - Mechanical seal device of adjustable water pump

Info

Publication number: CN201461525U
Application number: CN2009200877925U
Authority: CN
Inventors: 段轶; 蒋震西; 田兹双; 葛小军
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2009-08-04
Filing date: 2009-08-04
Publication date: 2010-05-12
Anticipated expiration: 2019-08-04

Abstract

The utility model discloses a mechanical seal device of an adjustable water pump, which mainly solves the problems that the mechanical seal of an existing mini single-suction water pump is leaked. The mechanical seal device comprises a shaft sleeve, a static ring component and a dynamic ring component, wherein a connecting piece is mounted between a dynamic ring and a push ring of the dynamic ring component through a screw, one end of the connecting piece is a round hole, and the other end is an elliptical hole, a screw on the push ring can move in the elliptical hole with the tension force of the spring, thereby regulating the distance between the dynamic ring and the push ring. In addition, the push ring comprises an outer ring and an inner ring, the reduced tension force of the spring can be compensated after a graphite seal ring is abraded through rotating to change the positions of the inner ring and the outer ring. The mechanical seal device can totally avoid the problems that the push ring is released from the shaft sleeve, and the graphite seal ring is abraded and leaked because the tension force of the spring can not be regulated, reduces equipment failures, and saves repairing cost.

Description

The adjustable pump mechanical seal device

Technical field

The utility model relates to the mechanical water pump seal arrangement, refers in particular to a kind of adjustable pump mechanical seal device that is applicable to small-sized single suction water pump.

Background technique

The sealing of water pump can be divided into packing seal and mechanical seal.Packing seal relies on the filler that is contained in the Stuffing box to realize sealing, between filler and the pump shaft relative movement is arranged, and can produce friction and wear and cause appearance to reveal poor reliability.Characteristics such as the relative packing seal of mechanical seal has good seal performance, and surface friction drag is little.At present, the packing seal of existing water pump is repacked into mechanical seal and become a kind of approach that improves pump efficiency and performance.For small-sized single suction water pump, its stuffing box volume is less, substituting in the gland sealed process with mechanical seal, because the tension force of spring, be prone to throw-out collar and break away from axle sleeve, cause spring to put on the impacting force deficiency of rotating ring O type ring and two carbon seal rings, make the surface of contact place of small-sized single entry pump driven torus O type ring place and two graphite-seal rings produce leakage, produce leakage owing to impeller also can't be in place this moment, directly has influence on the normal operation of water pump.Simultaneously, after the carbon seal ring of the mechanical seal device wearing and tearing, because that the tension force of spring can't be adjusted again is additional, spring can not be given the suitable impacting force of carbon seal ring, also can cause the surface of contact place between the carbon seal ring to produce leakage.

Summary of the invention

The purpose of this utility model is exactly the existing leakage problem of mechanical seal that will solve existing small-sized single suction water pump, and a kind of adjustable pump mechanical seal device of favorable sealing property is provided.

For achieving the above object, the adjustable pump mechanical seal device that the utility model is designed comprises being installed in the axle sleeve on the pump shaft and being installed in static components and moving ring assembly on the axle sleeve, wherein:

The stationary ring outer wall of described static components be equipped with and end cap between the stationary ring O type ring that seals, the stationary ring inwall is equipped with the stationary ring carbon seal ring; Described static components is installed in the end cap, and with the end cap integral assembling on axle sleeve.

The rotating ring inwall of described moving ring assembly be equipped with and axle sleeve between the rotating ring O type ring that seals, an end relative with stationary ring at rotating ring is equipped with the rotating ring carbon seal ring, the other end is equipped with gland, spring and throw-out collar successively, corresponding position on rotating ring and throw-out collar cylindrical wall is provided with screw hole, by the screw that screws in screw hole connecting sheet is installed between rotating ring and the throw-out collar.

The two ends perforate of described connecting sheet, an end are circular hole, as the rotating ring positioning hole; The other end is an elliptical aperture, and as the throw-out collar positioning hole, the screw on the throw-out collar can move in elliptical aperture along with the tension force of spring, thereby adjusts the distance between rotating ring and the throw-out collar.The minimum range of positioning hole is the location dimension of carbon seal ring under no state of wear on quiet, the moving ring assembly on the connecting sheet, and the ultimate range of positioning hole is that carbon seal ring on quiet, the moving ring assembly allows the location dimension under the greatest wear state on the connecting sheet.

The stationary ring carbon seal ring of described static components closely contacts with the rotating ring carbon seal ring of described moving ring assembly, and the throw-out collar of described moving ring assembly compresses by water pump vane.

Further, the radian of described connecting sheet is consistent with the cylindrical radian of rotating ring and throw-out collar, and it is simple and compact for structure.

Further, described throw-out collar is made of outer shroud and interior ring, is adjustable screw connection structure between the two.The position of ring and outer shroud can compensate the tension force that carbon seal ring wearing and tearing rear spring reduces in rotation changed.

Advantage of the present utility model is: designed adjustable pump mechanical seal device couples together throw-out collar and rotating ring with connecting sheet, makes the throw-out collar axially locating determine, can avoid throw-out collar to break away from axle sleeve fully.Connecting sheet throw-out collar positioning end screw can move in elliptical aperture and the adjustable screw connection structure of throw-out collar along with the tension force of spring, can solve the leakage problem that to adjust the carbon seal ring wearing and tearing back generation that causes because of the tension force of spring, reduce equipment failure simultaneously, save recondition expense.

Description of drawings

Fig. 1 is a kind of mounting structure schematic representation of adjustable pump mechanical seal device;

Fig. 2 is the decomposition texture schematic representation of mechanical water pump seal arrangement shown in Figure 1;

Fig. 3 is the main TV structure schematic representation of connecting sheet shown in Figure 2;

Fig. 4 is the left TV structure schematic representation of Fig. 3;

Fig. 5 is the main TV structure schematic representation of throw-out collar shown in Figure 2;

Fig. 6 is the left TV structure schematic representation of Fig. 5.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

The mounting structure of adjustable pump mechanical seal device of the present utility model in water pump seen Fig. 1.Its axle sleeve 2 is installed on the pump shaft 1, and static components 3 is installed on the end cap 4, and with end cap 4 integral assemblings on axle sleeve 2.End cap 4 is screwed on stuffing box 6, seals with sealing gasket 5 between end cap 4 and the stuffing box 6.Moving ring assembly 7 is sleeved on the axle sleeve 2, and the one end closely contacts with static components 3, and the other end compresses by water pump vane 8.

Concrete structure of the present utility model is seen Fig. 2.Stationary ring 9 outer walls of static components 3 be equipped with and end cap 4 between the sealing stationary ring O type ring 10, stationary ring 9 inwalls are equipped with stationary ring carbon seal ring 11.Rotating ring 15 inwalls of moving ring assembly 7 be equipped with and axle sleeve 2 between the sealing rotating ring O type ring 13, at rotating ring 15 and stationary ring 9 relative ends rotating ring carbon seal ring 12 is installed, the other end is equipped with gland 14, spring 18 and throw-out collar 17 successively, corresponding position on rotating ring 15 and throw-out collar 17 cylindrical walls is provided with screw hole 19, by the screw 20 that screws in screw hole 19 connecting sheet 16 is installed between rotating ring 15 and the throw-out collar 17.Stationary ring carbon seal ring 11 closely contacts with rotating ring carbon seal ring 12, and throw-out collar 17 compresses by water pump vane 8.

The structure of connecting sheet 16 is seen Fig. 3 and Fig. 4.The radian of connecting sheet 16 is consistent with the cylindrical radian of rotating ring 15 and throw-out collar 17.The hole 16a of connecting sheet 16 is a circular hole, as with the attachment hole of rotating ring 15; Another stomidium 16b is an elliptical aperture, as with the attachment hole of throw-out collar 17.Screw 20 on the throw-out collar 17 can move in elliptical aperture along with the tension force of spring 18, thereby adjusts the distance between rotating ring 15 and the throw-out collar 17.

The structure of throw-out collar 17 is seen Fig. 5 and Fig. 6.Throw-out collar 17 is made of outer shroud 21 and interior ring 22, is adjustable screw connection structure between the two.On the interior ring 22 of throw-out collar 17, have two tooling holes 23.After the contact surface abrasion of stationary ring carbon seal ring 11 and rotating ring carbon seal ring 12, instrument can be inserted in two tooling holes 23, ring 22 in the rotation, ring 22 moves to spring 18 directions in making, the tension force that reduces in order to compensation carbon seal ring wearing and tearing rear spring.

Claims

1. adjustable pump mechanical seal device comprises the axle sleeve (2) that is installed on the pump shaft (1) and is installed in static components (3) and moving ring assembly (7) on the axle sleeve (2), it is characterized in that:

Stationary ring (9) outer wall of described static components (3) be equipped with and end cap (4) between the sealing stationary ring O type ring (10), stationary ring (9) inwall is equipped with stationary ring carbon seal ring (11); Described static components (3) is installed in the end cap (4), and with end cap (4) integral assembling on axle sleeve (2);

Rotating ring (15) inwall of described moving ring assembly (7) be equipped with and axle sleeve (2) between the sealing rotating ring O type ring (13), an end relative with stationary ring (9) at rotating ring (15) is equipped with rotating ring carbon seal ring (12), the other end is equipped with gland (14), spring (18) and throw-out collar (17) successively, corresponding position on rotating ring (15) and throw-out collar (17) cylindrical wall is provided with screw hole (19), by the screw (20) that screws in screw hole (19) connecting sheet (16) is installed between rotating ring (15) and the throw-out collar (17); The screw hole (16a) of described connecting sheet (16) one ends is a circular hole, and the other end screw hole (16b) is an elliptical aperture;

The stationary ring carbon seal ring (11) of described static components (3) closely contacts with the rotating ring carbon seal ring (12) of described moving ring assembly (7), and the throw-out collar (17) of described moving ring assembly (7) compresses by water pump vane (8).

2. adjustable pump mechanical seal device according to claim 1 is characterized in that: the radian of described connecting sheet (16) is consistent with the cylindrical radian of rotating ring (15) and throw-out collar (17).

3. adjustable pump mechanical seal device according to claim 1 and 2 is characterized in that: described throw-out collar (17) is made of outer shroud (21) and interior ring (22), is adjustable screw connection structure between the two.

4. adjustable pump mechanical seal device according to claim 3 is characterized in that: have two tooling holes (23) on the interior ring (22) of described throw-out collar (17).