CN112066000B

CN112066000B - Manufacturing method of small spring double-end-face mechanical sealing device

Info

Publication number: CN112066000B
Application number: CN202010901999.2A
Authority: CN
Inventors: 赵恒勇
Original assignee: Dongtai Guangming Machinery Seal Co ltd
Current assignee: Dongtai Guangming Machinery Seal Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2022-04-26
Anticipated expiration: 2040-09-01
Also published as: CN112066000A

Abstract

The invention discloses a manufacturing method of a small-spring double-end-face mechanical sealing device, which comprises a spring seat, first springs, second springs, a moving ring, a static ring and a gland, wherein the first springs abut against the static ring, and the second springs abut against the moving ring, so that the static ring and the static ring are tightly attached together; even if the first spring or the second spring completely fails, the movable ring and the fixed ring can be tightly attached under the action of the second spring or the first spring, so that the sealing effect of the mechanical sealing device is ensured, and the problem that the sealing effect of the mechanical sealing device is influenced due to the failure of a single spring is solved.

Description

Manufacturing method of small spring double-end-face mechanical sealing device

Technical Field

The invention relates to the technical field of mechanical sealing devices, in particular to a manufacturing method of a small-spring double-end-face mechanical sealing device.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.

Traditional mechanical seal device supports the rotating ring through single spring mostly and holds on quiet ring, realizes corresponding sealed through the friction fit of quiet ring and rotating ring, and after long-time work, single spring inefficacy easily to lead to the rotating ring can't laminate closely with quiet ring, thereby influence mechanical seal device's sealed effect.

Disclosure of Invention

The invention aims to provide a method for manufacturing a small-spring double-end-face mechanical sealing device, and aims to solve the problem that the sealing effect of the mechanical sealing device is influenced due to the failure of a single spring.

In order to achieve the purpose, the invention provides a method for manufacturing a small-spring double-end-face mechanical sealing device, which comprises a spring seat, a first spring, a second spring, a movable ring, a static ring and a gland, and specifically comprises the following steps:

boring a first mounting cavity of the gland by using a boring machine, then fixedly mounting one end of the first spring inside the first mounting cavity, and then placing the static ring into the mounting cavity and fixing the static ring and the other end of the first spring together, so that the static ring can slide inside the first mounting cavity;

the spring seat is arranged on the rotating shaft in a penetrating mode and is fixed on the rotating shaft;

the rotating ring is arranged on the rotating shaft in a penetrating mode, and then two ends of the second spring are fixed with the spring seat and the rotating ring respectively;

and fixedly mounting the gland on the box body by adopting screws to ensure that the movable ring is attached to the static ring, thereby completing the assembly and manufacture of the small-spring double-end-face mechanical sealing device.

And drilling an accommodating groove in the spring seat by using a drilling machine, and fixedly mounting one end of the second spring in the accommodating groove.

The outer side of the static ring is provided with a convex part, a concave part corresponding to the convex part is bored on the press cover by using a boring machine, and the convex part is arranged in the concave part when the static ring is arranged.

Wherein the spring seat is fixedly mounted on the rotating shaft by a set screw.

Wherein, the rotating ring interval is provided with two laminating portions, two laminating portion respectively with quiet ring is laminated.

The invention has the beneficial effects that: the number of the second springs is multiple, two ends of the second springs are fixedly connected with the spring seat and the movable ring respectively, the number of the first springs is multiple, two ends of the first springs are fixedly connected with the gland and the stationary ring respectively, the first springs support the stationary ring, the second springs support the movable ring, so that the stationary ring and the stationary ring are tightly attached together, and when one of the second springs or the first spring fails, the movable ring and the stationary ring can be tightly attached by the rest of the first springs and the second springs, so that the sealing effect of the mechanical sealing device is ensured; even if the first spring or the second spring completely fails, the movable ring and the fixed ring can be tightly attached under the action of the second spring or the first spring, so that the sealing effect of the mechanical sealing device is ensured, and the problem that the sealing effect of the mechanical sealing device is influenced due to the failure of a single spring is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a small spring double mechanical seal device of the present invention.

Fig. 2 is a sectional view a-a of fig. 1 of the present invention.

Fig. 3 is a flow chart of a method of manufacturing the small spring double mechanical seal of the present invention.

The bearing comprises a spring seat 1, a containing groove 11, a first spring 2, a second spring 3, a movable ring 4, a joint part 41, an outer supporting frame 42, a stationary ring 5, a convex part 51, a gland 6, a first mounting cavity 61, a concave part 62, a positioning support 63 and a rotating shaft 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 3, the present invention provides a technical solution: the manufacturing method of the small spring double-end-face mechanical sealing device comprises a spring seat 1, a first spring 2, a second spring 3, a movable ring 4, a static ring 5 and a gland 6, and specifically comprises the following steps:

s01, boring a first mounting cavity 61 in the gland 6 by using a boring mill, then fixedly mounting one end of the first spring 2 in the first mounting cavity 61, and then placing the static ring 5 in the mounting cavity and fixing the static ring 5 and the other end of the first spring 2 together so that the static ring 5 can slide in the first mounting cavity 61;

s02, the spring seat 1 is arranged on the rotating shaft 7 in a penetrating way, and the spring seat 1 is fixed on the rotating shaft 7;

s03, the movable ring 4 is arranged on the rotating shaft 7 in a penetrating mode, and then two ends of the second spring 3 are fixed with the spring seat 1 and the movable ring 4 respectively;

and S04, fixedly mounting the gland 6 on the box body by adopting screws to ensure that the movable ring 4 is attached to the static ring 5, thereby completing the assembly and manufacture of the small-spring double-end-face mechanical sealing device.

In the present embodiment, a boring machine is used to bore a first mounting cavity 61 into the gland 6, then one end of the first spring 2 is fixedly mounted inside the first mounting cavity 61, and then the stationary ring 5 is placed into the first mounting cavity 61 and fixed together with the other end of the first spring 2, so that the stationary ring 5 can slide inside the first mounting cavity 61; the spring seat 1 is arranged on the rotating shaft 7 in a penetrating mode, and the spring seat 1 is fixed on the rotating shaft 7; the movable ring 4 is arranged on the rotating shaft 7 in a penetrating mode, and then two ends of the second spring 3 are fixed with the spring seat 1 and the movable ring 4 respectively; and fixedly mounting the gland 6 on the box body by adopting screws to ensure that the movable ring 4 is attached to the static ring 5, thereby completing the assembly and manufacture of the small-spring double-end-face mechanical sealing device. The spring seat 1 is fixedly connected with the rotating shaft 7, the spring seat 1 rotates along with the rotating shaft 7, the number of the second springs 3 is multiple, two ends of the second springs 3 are respectively fixedly connected with the spring seat 1 and the movable ring 4, the number of the first springs 2 is multiple, two ends of the first springs 2 are respectively fixedly connected with the gland 6 and the stationary ring 5, the first springs 2 support the stationary ring 5, the second springs 3 support the movable ring 4, so that the stationary ring 5 and the stationary ring 5 are tightly attached together, when one of the second springs 3 or the first springs 2 fails, the movable ring 4 and the fixed ring 5 can be tightly attached by means of the rest of the first springs 2 and the second springs 3, so that the sealing effect of the mechanical sealing device is ensured; even if the first spring 2 or the second spring 3 completely fails, the movable ring 4 and the static ring 5 can be tightly attached under the action of the second spring 3 or the first spring 2, so that the sealing effect of the mechanical sealing device is ensured, and the problem that the sealing effect of the mechanical sealing device is influenced due to the failure of a single spring is solved.

Further, a receiving groove 11 is drilled in the spring seat 1 by a drilling machine, and one end of the second spring 3 is fixedly installed inside the receiving groove 11.

In the present embodiment, the spring bearing 1 has a housing groove 11, and the second spring 3 is fixedly mounted inside the housing groove 11, thereby reducing the axial length of the mechanical seal device during mounting and saving space.

Furthermore, a convex part 51 is arranged on the outer side of the static ring 5, a concave part 62 corresponding to the convex part 51 is bored in the gland 6 by a boring machine, and the convex part 51 is installed in the concave part 62 when the static ring 5 is installed.

In this embodiment, the stationary ring 5 is provided with a convex portion 51, the gland 6 is provided with a concave portion 62 matched with the convex portion 51, and the convex portion 51 is installed inside the concave portion 62, so that the stationary ring 5 is fixed to prevent the stationary ring 5 from rotating under the driving of the moving ring 4.

Further, the spring seat 1 is fixedly mounted on the rotating shaft 7 by a set screw.

In the present embodiment, the spring seat 1 is fixedly mounted on the rotating shaft 7 by a set screw, so that the rotating shaft 7 rotates the spring seat 1.

Furthermore, the rotating ring 4 is provided with two attaching portions 41 at intervals, and the two attaching portions 41 are respectively attached to the stationary ring 5.

In this embodiment, the moving ring 4 is provided with two protrusions 51 at intervals, and the two protrusions 51 are arranged inside and outside, so that two joint end surfaces are formed between the moving ring 4 and the stationary ring 5, thereby providing two-stage protection and improving the sealing performance of the mechanical sealing device.

Further, the movable ring 4 is provided with an outer support frame 42, one end of the second spring 3 is fixedly installed inside the outer support frame 42, and one end of the outer support frame 42, which is far away from the movable ring 4, is located inside the accommodating groove 11.

In this embodiment, the outer support frame 42 and the movable ring 4 are integrally formed, one end of the outer support frame 42, which is far away from the movable ring 4, is located inside the accommodating groove 11, and the second spring 3 is located inside the outer support frame 42, so that the second spring 3 is protected and prevented from being corroded due to direct exposure of the second spring 3 to the liquid in the sealed cavity.

Further, the gland 6 is provided with a positioning support 63, the box body is provided with a positioning groove matched with the positioning support 63, and the positioning support 63 is aligned with the positioning groove and inserted when the gland 6 is installed.

In this embodiment, the positioning bracket 63 is inserted into the positioning groove when the pressing cover 6 is mounted, so as to position the pressing cover 6, thereby facilitating the mounting of the pressing cover 6.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A manufacturing method of a small spring double-end-face mechanical sealing device comprises a spring seat, a first spring, a second spring, a movable ring, a static ring and a gland, and is characterized by comprising the following steps:

boring a first mounting cavity of the gland by using a boring machine, then fixedly mounting one end of the first spring inside the first mounting cavity, and then placing the static ring into the first mounting cavity and fixing the static ring and the other end of the first spring together, so that the static ring can slide inside the first mounting cavity;

2. The method of claim 1, wherein a receiving groove is drilled into the spring seat by a drilling machine, and one end of the second spring is fixedly mounted inside the receiving groove.

3. The method of claim 2, wherein the stationary ring has a protrusion on an outer side thereof, a recess corresponding to the protrusion is bored in the gland by a boring machine, and the stationary ring is mounted with the protrusion inside the recess.

4. A method of manufacturing a small spring double mechanical seal device according to claim 3, wherein the spring seat is fixedly mounted on the rotating shaft by a set screw.

5. The method of claim 4, wherein the rotating ring is spaced apart from the stationary ring by two abutments that engage the stationary ring.