CN216742833U - Double-end-face mechanical seal - Google Patents

Abstract

The utility model discloses a double-end-face mechanical seal, which comprises a shaft sleeve, a gland and a water tank, wherein a movable ring seat is sleeved on the shaft sleeve, a spring is arranged in the movable ring seat, an inner movable ring and an outer movable ring are connected on the movable ring seat, an inner static ring and an outer static ring are connected on the gland, the outer movable ring is contacted with the outer static ring, the inner movable ring is contacted with the inner static ring, the inner static ring and the inner movable ring, the rotating ring seat, the outside rotating ring, form annular sealed chamber between quiet ring in the outside and the gland, it has inlet opening and apopore to open on the gland, inlet opening and apopore all communicate with the water tank, be provided with the pump sending ring in the sealed chamber, the pump sending ring is fixed on the rotating ring seat, the position of pump sending ring and apopore corresponds, the pump sending ring provides power and will pass through the apopore from the water that the inlet opening got into sealed chamber and discharge, this device is when cooling mechanical seal, do not need the outside to provide power, avoid the possibility of beating pump fever machine seal.

Description

Double-end-face mechanical seal

Technical Field

The utility model relates to the technical field of mechanical seal, in particular to a double-end-face mechanical seal.

Background

In the fields of fluoroplastic alloy centrifugal pumps, corrosion-resistant mortar pumps and the like, mechanical seals are required. The existing mechanical seals are of two types, one type is K-type seal combined seal, the defects are that pressure resistance and temperature resistance cannot be realized, abrasion is fast, leakage to a certain degree exists, the other type is WB2 type single-end face seal, temperature resistance cannot be realized, and an empty pump cannot be started.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the double-end mechanical seal, and when the device is used for cooling the mechanical seal, external power is not required to be provided, so that the possibility of emptying the pump and burning the mechanical seal is avoided.

The utility model provides a double mechanical seal, including axle sleeve, gland and water tank, the cover is equipped with the rotating ring seat on the axle sleeve, be provided with the spring in the rotating ring seat, connect inboard rotating ring and outside rotating ring on the rotating ring seat, be connected with inboard quiet ring and the quiet ring in the outside on the gland, the quiet ring contact in outside rotating ring and the quiet ring in the outside, inboard rotating ring and the quiet ring contact in inboard rotating ring, inboard quiet ring, inboard rotating ring, the rotating ring seat, the outside rotating ring, form annular seal chamber between the quiet ring in the outside and the gland, it has inlet opening and apopore to open on the gland, inlet opening and apopore all communicate with the water tank, be provided with the pump sending ring in the seal chamber, the pump sending ring is fixed on the rotating ring seat, the pump sending ring corresponds with the position of apopore, the pump sending ring provides power and will pass through the apopore from the liquid that the inlet opening got into the seal chamber and discharge.

Preferably, the water inlet holes and the water outlet holes are distributed along the inner and outer directions.

Preferably, the water inlet is connected with a water inlet pipe joint, and the water outlet is connected with a water outlet pipe joint.

Preferably, the gland comprises an inner gland and an outer gland, the inner gland is connected with the outer gland, the inner static ring is fixed on the inner gland, and the outer static ring is fixed on the outer gland.

Preferably, an annular sealing gasket is adopted for sealing between the outer static ring and the outer pressure cover.

Preferably, an inner static ring sealing ring is adopted for sealing between the inner static ring and the inner gland.

Preferably, the inner gland and the outer gland are sealed by gland sealing rings.

Preferably, an inner side moving ring sealing ring is arranged between the inner side moving ring and the shaft sleeve, and an outer side moving ring sealing ring is arranged between the outer side moving ring and the shaft sleeve.

Preferably, the inner wall of the shaft sleeve is provided with a shaft sleeve sealing ring.

The utility model has the beneficial effects that: through inboard quiet ring, inboard rotating ring, the rotating ring seat, the outside rotating ring, form annular sealed chamber between quiet ring in the outside and the gland, set up the pumping ring in the sealed chamber, the pumping ring is fixed with the rotating ring seat, when installing on the pump body, the motion of pumping ring follow-up ring seat and motion, the pumping ring provides power for the transport of cooling liquid, so long as cooling liquid has been held in the water tank, when the pump body rotates, the pumping ring just can be with discharging into the outlet port from the liquid that the inlet opening got into, realize the circulation of cooling liquid, take away the heat that the machine sealed produced, thereby realize steady operation, the pumping ring moves along with the rotating ring seat simultaneously, avoid empting the possibility of burning the machine seal when the pump.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a front sectional view of the present invention.

In the drawing, 1-inner static ring seal ring, 2-inner static ring, 3-inner dynamic ring, 4-inner dynamic ring seal ring, 5-shaft sleeve seal ring, 6-shaft sleeve, 7-outer dynamic ring seal ring, 8-outer dynamic ring, 12-outer static ring, 13-annular sealing gasket, 14-pumping ring, 15-gland seal ring, 20-water inlet water pipe joint, 21-water outlet water pipe joint, 22-spring, 23-inner gland, 24-outer gland, 25-dynamic ring seat and 26-water tank.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

Example 1

As shown in fig. 1, the present embodiment provides a double mechanical seal, comprising a shaft housing 6, a gland and a water tank 26, the improved pumping device is characterized in that a movable ring seat 25 is sleeved on the shaft sleeve 6, a spring 22 is arranged in the movable ring seat 25, the movable ring seat 25 is connected with an inner movable ring 3 and an outer movable ring 8, an inner stationary ring 2 and an outer stationary ring 12 are connected to the gland, the outer movable ring 8 is in contact with the outer stationary ring 12, the inner movable ring 3 is in contact with the inner stationary ring 2, the inner movable ring 3, the movable ring seat 25, the outer movable ring 8 and an annular sealing cavity formed between the outer stationary ring 12 and the gland are arranged on the gland, a water inlet hole and a water outlet hole are formed in the gland, the water inlet hole and the water outlet hole are communicated with the water tank 26, a pumping ring 14 is arranged in the sealing cavity, the pumping ring 14 is fixed on the movable ring seat 25, the pumping ring 14 corresponds to the position of the water outlet hole, and the pumping ring 14 provides power to discharge liquid entering the sealing cavity from the water inlet hole through the water outlet hole.

In this embodiment, an annular sealing cavity is formed between the inner static ring 2, the inner dynamic ring 3, the dynamic ring seat 25, the outer dynamic ring 8 and the outer static ring 12 and the gland, the pumping ring 14 is arranged in the sealing cavity, the pumping ring 14 is fixed with the dynamic ring seat 25, when the pump body is installed on the pump body, the pumping ring 14 moves along with the movement of the dynamic ring seat 25, and the pumping ring 14 provides power for conveying cooling liquid, so long as the cooling liquid is contained in the water tank 26, when the pump body rotates, the pumping ring 14 can discharge the liquid entering from the water inlet into the water outlet, circulation of the cooling liquid is realized, and the heat generated by the mechanical seal is taken away, so that stable operation is realized, meanwhile, the pumping ring 14 moves along with the movement of the dynamic ring seat 25, and the possibility of burning the mechanical seal during pump emptying is avoided. In the embodiment, a double-end-face sealing mode is adopted, so that the sealing effect is better.

In this embodiment the inlet openings and outlet openings are distributed along the inner and outer direction. When installing on the pump body, inlet opening and apopore are located the inside and outside both sides of pump case respectively, make the coolant liquid all cool off the machine seals and is located the pump case inside and outside part like this, and the cooling effect is better.

In this embodiment, the water inlet is connected to a water inlet pipe connector 20, and the water outlet is connected to a water outlet pipe connector 21. In this embodiment, the water inlet hole is connected with the water inlet hole water pipe connector 20, the water inlet hole water pipe connector 20 is connected with the water inlet pipe, the water outlet hole is connected with the water outlet hole water pipe connector 21, and the water outlet hole water pipe connector 21 is connected with the water outlet pipe, so that the connection between the water inlet pipe and the water outlet pipe is facilitated.

The gland in this embodiment includes an inner gland 23 and an outer gland 24, the inner gland 23 is connected to the outer gland 24, the inner stationary ring 2 is fixed to the inner gland 23, and the outer stationary ring 12 is fixed to the outer gland 24.

In the embodiment, the outer static ring 12 and the outer gland 24 are sealed by an annular sealing gasket 13.

In this embodiment, the inner stationary ring 2 and the inner gland 23 are sealed by the inner stationary ring seal ring 1.

In this embodiment, the inner gland 23 and the outer gland 24 are sealed by the gland packing 15.

In this embodiment, an inner moving ring seal ring 4 is arranged between the inner moving ring 3 and the shaft sleeve 6, and an outer moving ring seal ring 7 is arranged between the outer moving ring 8 and the shaft sleeve 6.

In this embodiment, the inner wall of the shaft sleeve 6 is provided with a shaft sleeve sealing ring 5.

In the present embodiment, the inner side of the housing is the inner side and the outer side of the housing is the outer side when the inner and outer movable rings 3 and 8 are mounted on the pump body. The inner side rotating ring 3 is made of stainless steel inlaid with silicon carbide materials, and the outer side rotating ring 8 is made of stainless steel inlaid with graphite materials. The sealing ring adopts a perfluorinated ring or an AFLAS ring.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (9)

1. A double-end-face mechanical seal is characterized by comprising a shaft sleeve (6), a gland and a water tank (26), wherein a movable ring seat (25) is sleeved on the shaft sleeve (6), a spring (22) is arranged in the movable ring seat (25), an inner movable ring (3) and an outer movable ring (8) are connected on the movable ring seat (25), an inner static ring (2) and an outer static ring (12) are connected on the gland, the outer movable ring (8) is in contact with the outer static ring (12), the inner movable ring (3) is in contact with the inner static ring (2), an annular seal cavity is formed between the inner static ring (2), the inner movable ring (3), the movable ring seat (25), the outer movable ring (8) and the outer static ring (12) and the gland, a water inlet hole and a water outlet hole are formed in the gland, the water inlet hole and the water outlet hole are communicated with the water tank (26), a pumping ring (14) is arranged in the seal cavity, and the pumping ring (14) is fixed on the movable ring seat (25), the pumping ring (14) corresponds to the position of the water outlet hole, and the pumping ring (14) provides power to discharge the liquid entering the sealed cavity from the water inlet hole through the water outlet hole.

2. A double mechanical seal according to claim 1 wherein said inlet and outlet apertures are distributed in an inward and outward direction.

3. A double mechanical seal according to claim 1, wherein a water inlet tap (20) is connected to the water inlet and a water outlet tap (21) is connected to the water outlet.

4. A double mechanical seal according to claim 1, wherein the gland comprises an inner gland (23) and an outer gland (24), the inner gland (23) being connected to the outer gland (24), the inner stationary ring (2) being fixed to the inner gland (23) and the outer stationary ring (12) being fixed to the outer gland (24).

5. A double mechanical seal according to claim 4, wherein the outer stationary ring (12) is sealed to the outer gland (24) by an annular gasket (13).

6. A double mechanical seal according to claim 4, wherein the inner stationary ring (2) is sealed to the inner gland (23) by an inner stationary ring seal (1).

7. A double mechanical seal according to claim 4, wherein the inner gland (23) and the outer gland (24) are sealed with gland packing (15).

8. A double mechanical seal according to claim 1, wherein an inner rotating ring seal (4) is arranged between the inner rotating ring (3) and the shaft sleeve (6), and an outer rotating ring seal (7) is arranged between the outer rotating ring (8) and the shaft sleeve (6).

9. A double mechanical seal according to claim 1, wherein the sleeve (6) is provided with a sleeve seal (5) on the inner wall.

Images