CN209800725U

CN209800725U - Novel mechanical seal

Info

Publication number: CN209800725U
Application number: CN201920468650.7U
Authority: CN
Inventors: 苏杨; 王洪群; 徐奔驰; 谢明辉; 吴亮; 邹晨; 邹志富; 吴丽娟; 孟绳续; 周国忠; 黄志坚
Original assignee: Zhejiang Great Wall Mixing Equipment Ltd By Share Ltd
Current assignee: Zhejiang Great Wall Mixing Equipment Ltd By Share Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2019-12-17
Anticipated expiration: 2029-04-02

Abstract

The utility model discloses a novel mechanical seal, including upper portion spring holder (2) and floating ring (5) of its lower part, spring holder (2) detachably installs on pivot (1), join in marriage between spring holder (2) and floating ring (5) and be equipped with spring (3), terminal surface and quiet ring (6) up end laminating under floating ring (5), quiet ring (6) sealed dress of joining in marriage is on mounting flange (7), elastic seal circle (4) join in marriage dress and join in marriage boss section (51) that floating ring (5) and pivot (1) are close, boss section (51) intermediate position design has the slot that holds elastic seal circle (4), the utility model discloses a floating ring can enough axial float and can have certain slope degree of freedom again, can seal better, simple structure moreover, and easy to assemble uses.

Description

Novel mechanical seal

Technical Field

The utility model belongs to the technical field of mechanical seal for the pivot is at the sealed of container inserted hole intersection.

Background

At present, the mechanical seal is widely applied to the rotating shaft seal of places such as a transmission pump, a stirring kettle and the like. Fig. 1 is a schematic view of a prior art mechanical seal. When the sealing ring works, the floating ring rotates along with the rotating shaft and is in fit friction with the end face between the static rings to realize radial sealing, and the elastic sealing ring is in axial sealing in the gap between the floating ring and the rotating shaft. Because the equipment vibration in operation can make mechanical seal department pivot play or displacement, at this moment the floating ring can enough axial float and can have certain slope degree of freedom again, just so can seal better. The axial floating performance of the mechanical seal in the prior art can meet the requirement, but the inclination degree of freedom is slightly insufficient, mainly because the floating ring has large integral height, the radial gaps at the upper part and the lower part of the integral height are small, and the degree of freedom is severely limited. When the rotating shaft at the mechanical seal position is jumped or displaced due to the vibration of equipment in work, the lower end face of the floating ring and the upper end face of the static ring can not be kept in fit sealing due to the limited inclination freedom degree of the floating ring.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a novel mechanical seal, its floating ring can enough the axial float can have certain slope degree of freedom again to realize sealing better.

The utility model provides a solve above-mentioned technical problem, the technical means of taking is invent a novel mechanical seal, including upper portion spring holder and the floating ring of its lower part, spring holder detachably installs in the pivot, is furnished with the spring between spring holder and the floating ring, and the laminating of floating ring lower extreme and quiet ring up end, quiet ring seal assembly is on mounting flange, and the dress is joined in marriage at the boss section that floating ring and pivot are close to the elastic sealing ring, and the intermediate position of boss section is designed with the slot that holds the elastic sealing ring. The boss section is close to the lower end face of the floating ring, and the stress of the floating ring when the floating ring bears the pressure in the container is reduced. The height of the boss section is low on the premise of meeting the design strength requirement, and the boss section is small in height, so that the inclination freedom degree of the floating ring is improved. The novel mechanical seal has the advantages that the floating ring is not large in height close to the boss section of the rotating shaft, and the floating ring can axially float and has certain inclination freedom degree as long as a gap is reserved between the floating ring and the rotating shaft.

As a further improvement, chamfers are machined on the upper side and the lower side of the boss section, which are close to the rotating shaft, so that the inclination freedom degree of the floating ring is improved, and the lower end face of the floating ring and the upper end face of the static ring can be kept to be attached and sealed constantly in the working process.

The beneficial effects of the utility model are that when equipment vibration makes mechanical seal department pivot appear beating or displacement in the work, the floating ring can enough the axial float can have certain slope degree of freedom again, can seal better like this, simple structure moreover, and easy to assemble uses.

Drawings

Fig. 1 is a schematic view of a prior art mechanical seal.

Fig. 2 is a schematic view of the novel mechanical seal structure.

Fig. 3 is an enlarged structure schematic diagram of the matching part of the novel mechanical seal floating ring and the elastic sealing ring with the rotating shaft.

In the figure: 1. a rotating shaft; 2. a spring seat; 3. a spring; 4. an elastic sealing ring; 5. a floating ring; 6. a stationary ring; 7. and (7) mounting a flange.

Detailed Description

As a novel mechanical seal's an embodiment, including upper portion spring holder 2 and the floating ring 5 of its lower part, the during operation is installed spring holder 2 on pivot 1, the equipartition is equipped with spring 3 between spring holder 2 and the floating ring 5, the laminating of terminal surface and the quiet ring 6 up end under the floating ring 5, quiet ring 6 seal-installation is on mounting flange 7, elastic seal ring 4 is assembled at the boss section 51 that floating ring 5 and pivot 1 are close, boss section 51 intermediate position design has the slot that holds elastic seal ring 4, boss section 51 is unanimous with the lower terminal surface of floating ring 5, the upper and lower both sides of boss section 51 are close pivot 1 position processing and are had chamfer 511, install the container inserted hole that the pivot needs to seal novel mechanical seal with the help of mounting flange 7.

Claims

1. The utility model provides a novel mechanical seal, floating ring (5) including upper portion spring holder (2) and its lower part, spring holder (2) detachably installs on pivot (1), join in marriage between spring holder (2) and floating ring (5) and be equipped with spring (3), terminal surface and quiet ring (6) up end laminating under floating ring (5), quiet ring (6) are sealed to be adorned on mounting flange (7), its characterized in that elastic seal circle (4) are adorned at boss section (51) that floating ring (5) and pivot (1) are close, boss section (51) intermediate position design has the slot that holds elastic seal circle (4), boss section (51) are close ring (5) down terminal surface, boss section (51) highly take low value under the prerequisite that satisfies the design strength requirement.

2. A novel mechanical seal according to claim 1, characterized in that chamfers (511) are machined on the upper and lower sides of the boss section (51) near the shaft (1).