CN212338173U

CN212338173U - Combined sealing filler

Info

Publication number: CN212338173U
Application number: CN202021045427.0U
Authority: CN
Inventors: 柴立民; 裘静惊
Original assignee: NINGBO IDT SINYUAN SEALING TECHNOLOGY CO LTD
Current assignee: NINGBO IDT SINYUAN SEALING TECHNOLOGY CO LTD
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-01-12
Anticipated expiration: 2030-06-09

Abstract

The utility model relates to a gland packing technical field just discloses a modular gland packing, including upper seal packing and lower gland packing, the bottom of upper seal packing and the equal fixedly connected with wave spring in top of lower gland packing, two the equal fixedly connected with middle gland packing in one side that wave spring is relative, the equal fixedly connected with outside sealing strip in the outside of upper seal packing, lower gland packing and middle gland packing. This combined type sealing filler, through setting up the outside sealing strip, inside sealing strip and sealing filler comprise multilayer structure, the centre is provided with the wave spring who is used for buffering and compensation effect, go up sealing filler, middle sealing filler, lower sealing filler and wave spring are connected and are coincide, promote sealing filler's leakproofness, effectual reduction is leaked, when medium pressure increases, to the whole fine cushioning effect that provides, the leakproofness is better, through setting up lug and recess, can insert inside the recess with the lug.

Description

Combined sealing filler

Technical Field

The utility model relates to a sealing filler technical field specifically is a modular sealing filler.

Background

The stuffing sealing is a dynamic sealing device which generates pressing force between the stuffing and the rotating part and between the stuffing and the fixing part under the action of pre-tightening or self-tightening of medium pressure, is also called stuffing box sealing, has more structural forms, mainly comprises the stuffing, a stuffing box and a stuffing fixing part, and is prefabricated into a ring shape or a strip shape by commonly used stuffing materials such as asbestos fabrics, carbon fibers, rubber, flexible graphite, engineering plastics and the like.

In the application of the valve, the sealing filler is not available, most of the sealing fillers are tightly sealed through bolt force, the sealing fillers on the market are various, but most of the sealing fillers have the defects that after long-time use, the sealing stress is reduced or the sealing effect cannot be achieved, the service life is short, and in order to pursue the sealing performance, a complex structure is arranged for some sealing fillers, so that the cost and the installation difficulty are increased while the sealing performance is improved.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a modular gland packing possesses advantages such as the leakproofness is better, has solved most all to have long-time use back, and sealing force descends, or can not play sealed effect, and life is short, and some gland packings have set up complicated structure for pursuing sealing performance, have increased the problem of the difficulty of cost and installation when improving sealing performance.

(II) technical scheme

For the better purpose of above-mentioned leakproofness of realization, the utility model provides a following technical scheme: the utility model provides a modular gland packing, includes gland packing and lower gland packing, the bottom of gland packing and the equal fixedly connected with wave spring in top of lower gland packing, two the gland packing in the middle of the equal fixedly connected with in one side that wave spring is relative, the equal fixedly connected with outside sealing strip in the outside of gland packing, lower gland packing and middle gland packing, the equal fixedly connected with inside seal strip in inboard of gland packing, lower gland packing and middle gland packing, the inboard fixedly connected with go-between of inside seal strip, the through oil hole has been seted up to go-between inside, the left side fixedly connected with lug of outside sealing strip, the right side of outside sealing strip is seted up flutedly.

Preferably, the bottom of the upper sealing filler and the top of the lower sealing filler are provided with second wave-shaped grooves, and the second wave-shaped grooves are matched with the wave-shaped springs in size.

Preferably, the top and the bottom of the middle sealing filler are provided with first wave-shaped grooves, and the size of each first wave-shaped groove is matched with that of the wave-shaped spring.

Preferably, the outer sides of the upper sealing filler, the lower sealing filler and the middle sealing filler are outer sealing grooves, and the size of each outer sealing groove is matched with that of the outer sealing strip.

Preferably, the inner sides of the upper sealing filler, the lower sealing filler and the middle sealing filler are respectively provided with an inner sealing groove, and the size of each inner sealing groove is matched with that of each inner sealing strip.

Preferably, the convex block consists of a connecting rod and a convex ball, the size of the convex block is matched with that of the groove, and the wave spring is a continuously wound wave crest staggered type wave spring.

(III) advantageous effects

Compared with the prior art, the utility model provides a modular gland packing possesses following beneficial effect:

this combination formula packings, through setting up the outside sealing strip, inside sealing strip and packings comprise multilayer structure, the centre is provided with the wave spring who is used for buffering and compensatory effect, go up packings, middle packings, lower packings and wave spring are connected coincide, promote packings' leakproofness, effectual reduction is leaked, when medium pressure increases, to the whole fine cushioning effect that provides, the leakproofness is better, through setting up lug and recess, can insert inside the recess with the lug, roll up outside sealing strip and put into outside seal groove, novel structure still has simultaneously, advantages such as simple to operate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the upper packing structure of the present invention;

fig. 3 is the structure schematic diagram of the external sealing strip of the present invention.

In the figure: the sealing structure comprises an upper sealing filler 1, a wave spring 2, a middle sealing filler 3, an outer sealing strip 4, an oil penetrating hole 5, an inner sealing strip 6, a convex block 7, a groove 8, a connecting ring 9 and a lower sealing filler 10.

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, a combined type packing seal comprises an upper packing seal 1 and a lower packing seal 10, wherein the bottom of the upper packing seal 1 and the top of the lower packing seal 10 are provided with second corrugated grooves, the second corrugated grooves are matched with the size of a corrugated spring 2, the bottom of the upper packing seal 1 and the top of the lower packing seal 10 are both fixedly connected with the corrugated spring 2, the corrugated spring 2 is a continuously wound wave crest staggered corrugated spring, the top and the bottom of a middle packing seal 3 are both provided with first corrugated grooves, the size of the first corrugated grooves is matched with the size of the corrugated spring 2, one opposite sides of the two corrugated springs 2 are both fixedly connected with the middle packing seal 3, the upper packing seal 1, the lower packing seal 10 and the middle packing seal 3 are pure graphite packing rings or weaving reinforced packing, the weaving method is that one or more of graphite and metal, graphite and polytetrafluoroethylene are combined, the outer sides of the upper sealing filler 1, the lower sealing filler 10 and the middle sealing filler 3 are fixedly connected with an outer sealing strip 4, the outer sides of the upper sealing filler 1, the lower sealing filler 10 and the middle sealing filler 3 are respectively provided with an outer sealing groove, the size of the outer sealing groove is matched with that of the outer sealing strip 4, the inner sides of the upper sealing filler 1, the lower sealing filler 10 and the middle sealing filler 3 are respectively fixedly connected with an inner sealing strip 6, the inner sides of the upper sealing filler 1, the lower sealing filler 10 and the middle sealing filler 3 are respectively provided with an inner sealing groove, the size of the inner sealing groove is matched with that of the inner sealing strip 6, the inner side of the inner sealing strip 6 is fixedly connected with a connecting ring 9, the connecting ring 9 is internally provided with an oil through hole 5, the left side of the outer sealing strip 4 is fixedly connected with a lug 7, the, the size of the bump 7 is matched with that of the groove 8, and the internal structures of the upper sealing filler 1, the lower sealing filler 10 and the middle sealing filler 3 are the same.

In conclusion, the combined sealing filler is characterized in that the outer sealing strip 4, the inner sealing strip 6 and the sealing filler are arranged to be of a multilayer structure, the middle of the combined sealing filler is provided with the wave spring 2 for buffering and compensating, the upper sealing filler 1, the middle sealing filler 3, the lower sealing filler 10 and the wave spring 2 are connected and matched, the sealing performance of the sealing filler is improved, leakage is effectively reduced, when the pressure of a medium is increased, a good buffering effect is provided for the whole body, the sealing performance is better, the convex block 7 can be inserted into the groove 8 by arranging the convex block 7 and the groove 8, the outer sealing strip 4 is rolled up and placed into an outer sealing groove, the combined sealing filler also has the advantages of being novel in structure, convenient to install and the like, the problems that after most of the combined sealing filler is used for a long time, the sealing force is reduced or the sealing effect cannot be achieved, the, the complicated structure is arranged, the sealing performance is improved, and meanwhile, the cost and the mounting difficulty are increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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. A combined sealing packing comprising an upper sealing packing (1) and a lower sealing packing (10), characterized in that: the bottom of the upper sealing filler (1) and the top of the lower sealing filler (10) are both fixedly connected with a wave spring (2), one side of the two wave springs (2) opposite to each other is both fixedly connected with a middle sealing filler (3), the outer sides of the upper sealing filler (1), the lower sealing filler (10) and the middle sealing filler (3) are fixedly connected with outer sealing strips (4), the inner sides of the upper sealing filler (1), the lower sealing filler (10) and the middle sealing filler (3) are fixedly connected with inner sealing strips (6), the inner side of the inner sealing strip (6) is fixedly connected with a connecting ring (9), an oil penetrating hole (5) is formed in the connecting ring (9), a convex block (7) is fixedly connected to the left side of the external sealing strip (4), and a groove (8) is formed in the right side of the external sealing strip (4).

2. The composite packing seal of claim 1, wherein: and second wave-shaped grooves are formed in the bottom of the upper sealing filler (1) and the top of the lower sealing filler (10), and are matched with the wave springs (2) in size.

3. The composite packing seal of claim 1, wherein: first wave-shaped grooves are formed in the top and the bottom of the middle sealing filler (3), and the size of each first wave-shaped groove is matched with that of the wave-shaped spring (2).

4. The composite packing seal of claim 1, wherein: the outer side of the upper sealing filler (1), the outer side of the lower sealing filler (10) and the outer side of the middle sealing filler (3) are provided with outer sealing grooves, and the size of each outer sealing groove is matched with that of each outer sealing strip (4).

5. The composite packing seal of claim 1, wherein: the inner side of the upper sealing filler (1), the inner side of the lower sealing filler (10) and the inner side of the middle sealing filler (3) are provided with inner sealing grooves, and the size of each inner sealing groove is matched with that of each inner sealing strip (6).

6. The composite packing seal of claim 1, wherein: the convex block (7) is composed of a connecting rod and a convex ball, the size of the convex block (7) is matched with that of the groove (8), and the wave spring (2) is a continuous winding wave crest staggered type wave spring.