CN2466078Y

CN2466078Y - Inflated rubber tape

Info

Publication number: CN2466078Y
Application number: CN 01209861
Authority: CN
Inventors: 井朝纲
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-19
Filing date: 2001-02-19
Publication date: 2001-12-19
Anticipated expiration: 2011-02-19

Abstract

The utility model belongs to the technical field of rubber products and discloses a sealing end plug for the end surface of a faucet, which is an inflated rubber tape used in the process of coating linings on the inner walls of iron pipes. The utility model is mainly characterized in that the inflated rubber tape comprises a sealing surface with a bevel circular ring and a step circular ring, and an inflating bag ring with an inflating nozzle, wherein the inner lateral surface of the inflating bag ring is concave, and an annular groove is formed between the inflating bag ring and the sealing surface. The inflated rubber tape overcomes the defects of small axial extension rate, poor sealing effect on the end surfaces of the inner wall of the same iron pipe, and short service life after inflation.

Description

A kind of Inflated rubber tape

The utility model belongs to the rubber technical field, relates to a kind of seal plug that the iron pipe internal face adds female end face in man-hour that is used for specifically.

When the internal face processing to the cast iron pipe blank is coated with lining, is fixed with an Inflated rubber tape on the end face of its bellmouth and is used for side seal.Present employed end face Inflated rubber tape, because the medial surface of its inflatable pneumatic bag ring is the plane, axially percentage elongation is little in its inflation back, and sealing surface is garden, a plane ring, the sealing surface of desiring to make this Inflated rubber tape make flush type reaches desirable sealing effectiveness with the iron pipe end face, the inner gas pressure that must add air vesicle makes its over pressure load running.Therefore, this Inflated rubber tape exist in use use dangerous, sealing effectiveness difference and service life short defective (Inflated rubber tape generally can only be handled 200 cast iron pipes).

The purpose of this utility model just provides that a kind of longitudinal stretch ratio is big, good sealing effect and Inflated rubber tape safe in utilization, that the life-span is long.

The technical scheme that realizes the utility model purpose is: a kind of Inflated rubber tape, include garden ring type sealing surface, and the one side is connected with an annular inflatable capsule that has charging connector, and the interior sidewall surface of inflatable pneumatic bag is the groove face of indent.

Its additional technical feature is: the groove face of described indent is a U type groove; The groove face of described indent is a V-shaped groove; The groove face of described indent is the garden deep-slotted chip breaker; Described at the inflatable pneumatic bag ring medial surface and sealing surface between an annular groove is arranged; The edge of described sealing surface is an inclined plane ring; The inclined-plane of described inclined plane ring with the angle between the sealing surface between 5-10 °; The inclined-plane of described inclined plane ring with the angle between the sealing surface between 25-40 °; The outer edge of described inclined plane ring has a step ring;

The Inflated rubber tape that the utility model proposed is compared with prior art and is had the following advantages: because the madial wall of the inflatable pneumatic bag ring of Inflated rubber tape is arc or (V, U-shaped) face of indent, so improved the resistance to pressure of inflatable pneumatic bag ring medial surface, reached purpose safe in utilization, and improved longitudinal stretch ratio during inflation, make sealing surface better, also prolonged service life (generally can handle 600 cast iron pipes) simultaneously with the sealing effectiveness between the iron pipe bellmouth end face; Owing between the inflatable pneumatic bag ring is with sealing surface, form the area that an annular groove has reduced inflatable pneumatic bag ring inwall, after the inflation its longitudinal stretch ratio is improved greatly; Owing on the edge of sealing surface, form its width that certain angle is arranged,, improved sealing effectiveness so make the two more closely subsides mutually during inflation more than or equal to garden, iron pipe female end face width degree inclined-plane ring; In addition, form the ring-shaped step of a width, be used in the female end face sealing of heavy caliber iron pipe, its better effects if less than iron pipe female end face width degree at the edge of the sealing surface that has garden, inclined-plane ring.

Be described in further detail below in conjunction with structure and the use of accompanying drawing and example the Inflated rubber tape that the utility model proposes:

Fig. 1 is: the Inflated rubber tape cross section structure scheme drawing that inserts iron pipe bellmouth end face;

Fig. 2 is: the Inflated rubber tape cross section structure scheme drawing that is used in the heavy caliber iron pipe.

Be illustrated in figure 1 as the cross section structure that is used in small-bore cast iron pipe bellmouth end face Inflated rubber tape that the utility model proposes, comprise: it is 5-10 ° of sealing surface 7 that is preferably 5 °-7 ° garden, inclined-plane ring 5 that the edge has angle, on sealing surface, be fixed with the inflatable pneumatic bag ring 1 of the gas nozzle 2 that connects as one, the interior sidewall surface 3 of this inflatable pneumatic bag ring is the cambered surface of indent (also can be U-shaped or V-arrangement face), forms an annular groove 4 between the inner concave arc surface of inflatable pneumatic bag ring and sealing surface 7.During use this Inflated rubber tape is pushed iron pipe bellmouth 9, make garden, the inclined-plane ring 5 of sealing surface be adjacent to inflation with bellmouth end face 6, inflatable pneumatic bag endless belt dynamic seal over glaze is to expansion, thereby reaches the two leak free effect.Because the madial wall 3 of inflatable pneumatic bag ring is inner concave arc surface (or V-arrangement, U-shaped face), and have annular groove 4, so reduced the area of inflatable pneumatic bag ring-side wall (also being sealing surface), and this sidewall thickness is lower than the thickness of other sidewall, so its axial expansion amount increases during inflation, sealing surface has the ring 5 end face bellmouth wall angles 6 with iron pipe, garden, inclined-plane again and is adjacent to, so improved sealing effectiveness.

Be illustrated in figure 2 as the schematic cross-section that is used in heavy caliber iron pipe bellmouth leak free Inflated rubber tape, promptly it is the angle that has increased garden, sealing surface inclined-plane ring on the basis of Fig. 1, and promptly this angle (is preferably 30 °) between 25-40 °.There is a ring-shaped step 8 at the edge, and the width of this ring-shaped step is less than the width of iron pipe end face 6, its garden, inclined-plane ring 5 is just in time pasted mutually with iron pipe inwall bellmouth wall angle 6 reach the leak free effect after inflating.

Claims

1. an Inflated rubber tape includes garden ring type sealing surface, and the one side is connected with an annular inflatable capsule that has charging connector, and the interior sidewall surface that it is characterized by described inflatable pneumatic bag is the groove face of indent.

2. a kind of Inflated rubber tape as claimed in claim 1, the groove face that it is characterized by described indent are U type groove.

3. a kind of Inflated rubber tape as claimed in claim 1, the groove face that it is characterized by described indent is a V-shaped groove.

4. a kind of Inflated rubber tape as claimed in claim 1, the groove face that it is characterized by described indent is the garden arc groove.

5. a kind of Inflated rubber tape as claimed in claim 1, it is characterized by between the medial surface of described inflatable pneumatic bag ring and sealing surface has an annular groove.

6. a kind of Inflated rubber tape as claimed in claim 1, the edge that it is characterized by described sealing surface is an inclined plane ring.

7. a kind of Inflated rubber tape as claimed in claim 6, the inclined-plane that it is characterized by described inclined plane ring with the angle between the sealing surface between 5-10 °.

8. a kind of Inflated rubber tape as claimed in claim 6, the inclined-plane that it is characterized by described inclined plane ring with the angle between the sealing surface between 25-40 °.

9. a kind of Inflated rubber tape as claimed in claim 8, the outer edge that it is characterized by described inclined plane ring has a step ring.