CN217602980U

CN217602980U - High gas tightness mechanical seal device of water pump

Info

Publication number: CN217602980U
Application number: CN202221426334.1U
Authority: CN
Inventors: 叶金巍
Original assignee: Zhejiang Zhonghang Water Pump Co ltd
Current assignee: Zhejiang Zhonghang Water Pump Co ltd
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-18
Anticipated expiration: 2032-06-08

Abstract

The utility model discloses a high gas tightness mechanical seal device of water pump relates to immersible pump sealing technique field, including keeping off ring, rotating ring and quiet ring, keep off and install the spring between ring and the rotating ring, one side of rotating ring and quiet ring contact is opened there is the U-shaped groove, be provided with the bulge loop that matches with the U-shaped groove on the quiet ring, and the through-hole that communicates with the U-shaped groove is seted up to the lateral wall of rotating ring. The utility model discloses a set up U-shaped groove and bulge loop for form the sealed department of U-shaped between rotating ring and the quiet ring, can improve the leakproofness between rotating ring and the quiet ring, can be making the sealed department of liquid U-shaped form the oil film through setting up the through-hole moreover, reduce the frictional force of sealed department, can make the relatively sensitive following pivot of rotating ring rotate together through setting up spacing and spacing groove moreover, thereby reduce the influence of rotating ring inertia to the spring.

Description

High gas tightness mechanical seal device of water pump

Technical Field

The utility model relates to a immersible pump seals technical field, specifically is a high gas tightness mechanical seal device of water pump.

Background

The mechanical seal is a sealing device formed by two sealing elements (a static ring and a dynamic ring) which are mutually attached by being vertical to smooth and straight surfaces of a shaft and rotate relatively. The contact surface between the moving ring and the static ring of the existing water pump mechanical sealing device is a plane, the sealing effect of the contact surface is poor, the leakage condition is easy to occur,

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high gas tightness mechanical seal device of water pump to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a high gas tightness mechanical seal device of water pump, is including keeping off ring, rotating ring and quiet ring, keep off and install the spring between ring and the rotating ring, one side of rotating ring and quiet ring contact is opened there is the U-shaped groove, be provided with the bulge loop that matches with the U-shaped groove on the quiet ring, and the through-hole that communicates with the U-shaped groove is seted up to the lateral wall of rotating ring.

Preferably, an end cover is installed on the outer side of the static ring.

Preferably, one side that fender ring and rotating ring are close to is provided with the bellying, the outside fixed mounting of bellying has spacing, the spacing groove that matches with spacing is seted up to the rotating ring inside wall.

Preferably, the length of the limiting strip is smaller than that of the protruding portion, and a sealing ring is mounted on the side wall of the movable ring on the inner side of the limiting groove.

Preferably, one end of the spring is in contact with the outer side of the retaining ring, and the other end of the spring is in contact with the outer side of the movable ring.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up U-shaped groove and bulge loop for form the sealed department of U-shaped between rotating ring and the quiet ring, can improve the leakproofness between rotating ring and the quiet ring, can be making the sealed department of liquid U-shaped form the oil film through setting up the through-hole moreover, reduce the frictional force of sealed department, can make the relatively sensitive following pivot of rotating ring rotate together through setting up spacing and spacing groove moreover, thereby reduce the influence of rotating ring inertia to the spring.

Drawings

Fig. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the movable ring and the stationary ring of the present invention;

FIG. 3 is a schematic view of the movable ring structure of the present invention;

fig. 4 is a cross-sectional view of another embodiment of the present invention;

fig. 5 is a schematic structural view of the baffle ring of the present invention.

In the figure: 1. a baffle ring; 2. a spring; 3. a through hole; 4. a moving ring; 5. an end cap; 6. a U-shaped groove; 7. a stationary ring; 71. a convex ring; 8. a boss portion; 9. a limiting strip; 10. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the embodiment provides a high-airtightness mechanical sealing device for a water pump, which includes a baffle ring 1, a moving ring 4 and a stationary ring 7, wherein the baffle ring 1, the moving ring 4 and the stationary ring 7 are installed inside a sealing shell, cooling liquid is installed in the sealing shell, the baffle ring 1 is connected with a rotating shaft through a bolt, so that the baffle ring 1 can rotate along with the rotating shaft, a spring 2 is installed between the baffle ring 1 and the moving ring 4, one end of the spring 2 is in contact with the outer side of the baffle ring 1, the other end of the spring is in contact with the outer side of the moving ring 4, the spring 2 provides elasticity for the moving ring 4, so that the moving ring 4 is in close contact with the stationary ring 7, a U-shaped groove 6 is formed in one side of the moving ring 4 in contact with the stationary ring 7, a convex ring 71 matched with the U-shaped groove 6 is arranged on the stationary ring 7, the U-shaped groove 6 is clamped with the convex ring 7, a U-shaped sealing position is formed, and a sealing effect between the moving ring 4 and the stationary ring 7 is better. And compared with the surface contact between the movable ring 4 and the static ring 7, the contact area is increased, so that the sealing effect can be improved.

Because the sealing effect of the U-shaped sealing part is good, when the sealing part works in cooling liquid, an oil film is hardly formed at the air sealing part to reduce friction, the side wall of the movable ring 4 is provided with the through hole 3 communicated with the U-shaped groove 6, and the cooling liquid can enter the U-shaped groove 6 through the through hole, so that the oil film can be formed at the U-shaped sealing part by the cooling liquid, and the friction force between the movable ring 4 and the static ring 7 is reduced.

The outer side of the static ring 7 is provided with an end cover 5 through a fixing pin and is fixedly connected with the end cover.

Since the rotating ring 4 rotates along with the rotating shaft when the rotating shaft rotates, the rotating ring 4 has inertia at the beginning of the rotating shaft, so that the spring 2 is deformed during the rotation, and the spring 2 or the rotating ring 4 is damaged.

Therefore, in a further embodiment, as shown in fig. 4-5, a protruding portion 8 is disposed on a side of the baffle ring 1 close to the moving ring 4, a limiting strip 9 is fixedly mounted on an outer side of the protruding portion 8, a limiting groove 10 matched with the limiting strip 9 is formed in an inner side wall of the moving ring 4, the limiting strip 9 and the limiting groove 10 can slide relatively, and contact with the stationary ring 7 can still be maintained under the elastic force of the spring 2.

And when the pivot rotated, under spacing groove 10 and spacing 9's effect, spacing 9 can take the rotating ring 4 to rotate for the rotating ring 4 then rotates together, thereby can reduce because the inertia of rotating ring 4 is to the influence of spring or rotating ring, improves life.

The length of spacing 9 is less than the length of bellying 8, and the sealing washer is installed to the lateral wall of the rotating ring 4 of spacing groove 10 inboard, and the sealing washer is located the tip of bellying, plays sealed effect between bellying 8 and rotating ring 4.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high gas tightness mechanical seal device of water pump, includes fender ring (1), rotating ring (4) and quiet ring (7), install spring (2), its characterized in that between fender ring (1) and rotating ring (4): one side that rotating ring (4) and quiet ring (7) contact is opened there is U-shaped groove (6), be provided with bulge loop (71) with U-shaped groove (6) matching on quiet ring (7), and through-hole (3) with U-shaped groove (6) intercommunication are seted up to the lateral wall of rotating ring (4).

2. The high-airtightness mechanical sealing device for the water pump according to claim 1, wherein: and an end cover (5) is arranged on the outer side of the static ring (7).

3. The high-airtightness mechanical sealing device for the water pump as claimed in claim 2, wherein: one side that fender ring (1) and rotating ring (4) are close to is provided with bellying (8), the outside fixed mounting of bellying (8) has spacing (9), spacing groove (10) that match with spacing (9) are seted up to rotating ring (4) inside wall.

4. The high-airtightness mechanical sealing device for the water pump according to claim 3, wherein: the length of spacing strip (9) is less than the length of bellying (8), the sealing washer is installed to the lateral wall of the rotating ring (4) of spacing groove (10) inboard.

5. The high-airtightness mechanical sealing device for the water pump according to claim 1, wherein: one end of the spring (2) is in contact with the outer side of the baffle ring (1), and the other end of the spring is in contact with the outer side of the movable ring (4).