CN203335859U

CN203335859U - Novel graphite packing ring

Info

Publication number: CN203335859U
Application number: CN2013203745106U
Authority: CN
Inventors: 黄申海
Original assignee: CIXI BAISHA JINGGONG SEALED MATERIAL PLANT
Current assignee: CIXI BAISHA JINGGONG SEALED MATERIAL PLANT
Priority date: 2013-06-27
Filing date: 2013-06-27
Publication date: 2013-12-11
Anticipated expiration: 2023-06-27

Abstract

The utility model relates to the technical field of sealing packing, in particular to a novel graphite packing ring. The novel graphite packing ring comprises an annular packing ring body, transition chamfers are adopted at the joint position between the outer edge of the body and the upper end face of the body and at the joint position between the outer edge of the body and the lower end face of the body, the transition chamfers of the body are coated with abrasion-resistant aramid fiber layers, and chamfers are arranged between an inner hole of the body and the upper end face of the body and between the inner hole of the body and the lower end face of the body for transition. In comparison with the prior art, the tolerance intensity of the outer edges is improved through the transition chamfers in the pressing process, edge and corner breakage caused by bumping is avoided, and thus the percent of pass of products is improved. Moreover, the transition chamfers are coated with the abrasion-resistant layers made of aramid fibers so that the abrasion resistance can be improved, and thus the novel graphite packing ring is suitable for a working environment with a high pressure and a large line number of lines, effectively protects the mechanical usage safety of equipment and thus ensures the service life of the equipment.

Description

A kind of novel graphite packing ring

Technical field

The utility model relates to the stuffing box packing technical field, particularly a kind of novel graphite packing ring.

Background technique

Carbon packing ring is a kind ofly to be applicable to oil, chemical industry and some have the environment of the strong corrosive medias such as soda acid, is installed on the mechanical seal product of various rotating equipments, reciprocating pump, valve etc.Common carbon packing ring is structure in the form of a ring, be Expanded graphite after shearing by mould be wound around the compacting form.Because the material behavior of graphite has the characteristics such as self lubricity is good, corrosion-resistant, produce and install relative conveniently, be one of environmental protection row stuffing box packing that current cost performance is higher.

But the material of graphite is more crisp, cause the damage percentage of packing ring in production, circulation and installation process high all the time; The wearing and tearing of the corner of carbon packing ring during use are also quite serious, cause sealing to reduce and then cause leakage, particularly still not enough to some extent under high environment at working condition requirements such as high strength, high line numbers; Often find that carbon packing ring damages in advance while changing packing ring, the corrosion phenomena that weight differs also occurs in the sealed member surface of its contact, causes the valve rod distortion of corroding, and causes larger economic loss.

The model utility content

The purpose of this utility model is for the defect of prior art and deficiency, and a kind of rational in infrastructure, novel graphite packing ring of using safety, structural stability, wear resistant corrosion resistant is provided.

For achieving the above object, the utility model is by the following technical solutions:

A kind of novel graphite packing ring described in the utility model, the packing ring body that comprises ring-type, outer rim and the seam crossing between upper and lower end face of described body all adopt knuckle, the knuckle place of body is coated with the wearing layer of aramid fibre, is equipped with the chamfering transition between the endoporus of described body and upper and lower end face.

Further, the 5%-10% that the radius span of the knuckle on described body is body thickness.

Further, the chamfering transition position of described body is coated with the friction layer that falls of molybdenum disulfide.

The utility model beneficial effect is: compared with prior art; the utility model increases the tolerance intensity of exterior rim when compacting by knuckle; avoid producing because colliding with the situation that collapses quick-fried angle, limit; improved the up-to-standard rate of product; and apply the wearing layer of aramid fibre system to improve wear resistance on knuckle; make it to be applicable to the working environment of the high line number of High Voltage, effectively protect the machinery of equipment to use safety and life-span.

The accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model.

In figure:

1, body; 2, wearing layer; 3, friction layer falls.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

A kind of novel graphite packing ring described in the utility model, the packing ring body 1 that comprises ring-type, outer rim and the seam crossing between upper and lower end face of described body 1 all adopt knuckle, the 5%-10% that the radius span of the knuckle on body 1 is body 1 thickness, the knuckle place of body 1 is coated with the wearing layer 2 of aramid fibre; Body 1 increases the tolerance intensity of exterior rim when compacting by knuckle, avoid body 1 to produce the situation that collapses quick-fried angle, limit because colliding with, and has improved the up-to-standard rate of product; And improve the wear resistance of bodies 1 by apply wearing layer 2 that aramid fibre makes on knuckle, avoid the corner inordinate wear of packing ring and cause the reduction of life of product.

Be equipped with the chamfering transition between the endoporus of described body 1 and upper and lower end face, what the chamfering transition position of body 1 was coated with molybdenum disulfide falls friction layer 3; The inner bore chamfering of body 1 contributes to the installation of packing ring, and reserve the infiltration that certain space contributes to oiling agent between the inner bore chamfering of body 1 and sealed member, and inner bore chamfering has reduced the surface of contact between packing ring and movable valve rod and then has reduced friction factor, the working life that can effectively improve packing ring.

The above is only better embodiment of the present utility model, and the equivalence of doing according to the described structure of the utility model patent claim, feature and principle therefore all changes or modifies, and is included in the utility model patent claim.

Claims

1. a novel graphite packing ring, the packing ring body (1) that comprises ring-type, it is characterized in that: outer rim and the seam crossing between upper and lower end face of described body (1) all adopt knuckle, the knuckle place of body (1) is coated with the wearing layer (2) of aramid fibre, between the endoporus of described body (1) and upper and lower end face, is equipped with the chamfering transition.

2. novel graphite packing ring according to claim 1, is characterized in that: the 5%-10% that the radius span of the knuckle on described body (1) is body (1) thickness.

3. novel graphite packing ring according to claim 1 is characterized in that: what the chamfering transition position of described body (1) was coated with molybdenum disulfide falls friction layer (3).