CN201419151Y

CN201419151Y - Foaming gun needle bar sealing structure

Info

Publication number: CN201419151Y
Application number: CN200920163208XU
Authority: CN
Inventors: 郑英
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-06-30
Filing date: 2009-06-30
Publication date: 2010-03-10
Anticipated expiration: 2019-06-30

Abstract

A foaming gun needle bar sealing structure is located between a needle bar and a gun body, and comprises an O-shaped sealing ring, wherein a sealing cavity is arranged in the gun body, a hold-down bolt is connected with the outside of the sealing cavity through screw threads, the O-shaped sealing ring is arranged in the sealing cavity, the needle bar penetrates through the sealing cavity and the hold-down bolt, the O-shaped sealing ring is sleeved on the needle bar, a ring-shaped pad is arranged between the hold-down bolt and the O-shaped sealing ring, and the pad is sleeved on the needle bar.As the inner end of the hold-down bolt does not directly contact with the O-shaped sealing ring in the assembly process of the sealing structure, the rotation of the hold-down bolt can not affect thestable position of the O-shaped sealing ring, the sealing effect of the O-shaped sealing ring is guaranteed, and the needle bar can not greatly abrade the O-shaped sealing ring in the movement process.

Description

Foam gun shank hermetically-sealed construction

Technical field

The utility model relates to a kind of hermetically-sealed construction, relates in particular to a kind of foam gun shank hermetically-sealed construction of being located between shank and the rifle body.

Background technology

The structure of foam gun mainly comprises rifle body and gun barrel, is provided with shank in the gun barrel, also is hinged with spanner on the rifle body, and shank passes the external side of rifle and is connected with spanner, and spanner can drive shank and follow action together when action, so that foam gun ejection expanding foam solution.The rifle body is provided with adapter, and adapter is to be connected with the foamed pot of storing expanding foam solution, and when foam gun was worked, expanding foam solution can enter in the foam chamber set in the rifle body, and foam chamber communicates with gun barrel, and shank passes foam chamber and is connected with spanner.In order to be implemented in the liquid sealing that shank passes place, rifle body position, this position is provided with annular seal space on the rifle body, the outer end of the annular seal space hold-down bolt that has been threaded, be provided with an O RunddichtringO in the annular seal space, the O RunddichtringO is socketed on the shank, and the inner end of hold-down bolt is resisted against on the end side surface of O RunddichtringO.This hermetically-sealed construction inconvenience assembling, when being screwed into hold-down bolt in the annular seal space, hold-down bolt not only has the axial compression active force to the O RunddichtringO, simultaneously when both close-fittings, the rotation of hold-down bolt can make the O RunddichtringO be subjected to circumferential active force, the O RunddichtringO easily is distorted in annular seal space, this both can influence the sealing to expanding foam solution, can have influence on the matching relationship between O RunddichtringO and the shank again, shank can produce bigger wearing and tearing to the O RunddichtringO when action, the service life of O RunddichtringO is short.

The utility model content

The purpose of this utility model is: a kind of foam gun shank hermetically-sealed construction to expanding foam solution good sealing effect, O RunddichtringO long service life is provided.

For reaching described purpose, the technical measures that the utility model is taked: a kind of foam gun shank hermetically-sealed construction, between shank and rifle body, comprise the O RunddichtringO, in the rifle body, be provided with annular seal space, the outside screw of annular seal space is connected with hold-down bolt, the O RunddichtringO is arranged in the annular seal space, and shank passes annular seal space and hold-down bolt, and the O RunddichtringO is socketed on the shank, be provided with annular shim between hold-down bolt and O RunddichtringO, pad is socketed on the shank.Pad generally is by the plastics integrated injection molding, and pad can be a metal material also, requires pad to have the hardness higher than O RunddichtringO.

This hermetically-sealed construction also can be done following improvement:

Described O RunddichtringO is a plurality of, and they are arranged in the annular seal space side by side.

Described O RunddichtringO also is provided with a pad with respect to another of described pad is distolateral.

The external diameter of described pad is slightly less than the external diameter of O RunddichtringO.

The utlity model has following beneficial effect:

The inner of hold-down bolt directly contacts with pad, in the process of hold-down bolt in being screwed into annular seal space, the inner end of hold-down bolt slides on the end side surface of pad, the O RunddichtringO of this moment only is subjected to axial thrust, this helps the assurance of O RunddichtringO position in annular seal space, has good matching relationship between O RunddichtringO and the shank, thereby make the O RunddichtringO give full play to its sealing effectiveness to expanding foam solution, and shank can not produce bigger wearing and tearing, the long service life of O RunddichtringO to the O RunddichtringO when action.

Description of drawings

Fig. 1 is the partial sectional view that has this shank hermetically-sealed construction foam gun.

Fig. 2 is the A portion structure for amplifying schematic diagram among Fig. 1.

The specific embodiment

The specific embodiment of the utility model foam gun shank hermetically-sealed construction is seen Fig. 1, Fig. 2, shown in Figure 3.

This foam gun shank hermetically-sealed construction comprises O RunddichtringO 9, is provided with annular seal space 8 in rifle body 5, and described O RunddichtringO 9 is set in the annular seal space 8.

In rifle body 5, be provided with foam chamber 2, set gun barrel 1 inside of foam chamber 2 and rifle body 5 front communicates, described annular seal space 8 is positioned at the rearward end of foam chamber 2, both communicate, be provided with interior between the two to bulge loop, the shank of being located in the gun barrel 13 passes foam chamber 2, annular seal space 8 successively, and is connected with spanner 4 on being hinged on rifle body 5.

Described O RunddichtringO 9 is two (also can be provided with more a plurality of according to circumstances), and they are arranged in the annular seal space 8 side by side, and shank 3 passes O RunddichtringO 9.

Hold-down bolt 7 has been threaded in the outer end of annular seal space 8, hold-down bolt 7 is socketed on the shank 3, the both end sides that is set up in parallel two O RunddichtringOs 9 together is respectively equipped with pad 6, and O RunddichtringO 9 is between two pads 6, and pad 6 all is set in the annular seal space 8.O RunddichtringO 9 is lived from sandwich by two pads 6, has further ensured the positional stability of O RunddichtringO 9 in annular seal space 8.One of them pad 6 is fitted in described interior on bulge loop, and another pad 6 contacts with the inner end of hold-down bolt 7.Hold-down bolt 7 stably remains on pad 6, O RunddichtringO 9 in the annular seal space 8.

The external diameter outline of pad 6 is convenient to pad 6 is assembled in the annular seal space 8 less than the external diameter of O RunddichtringO 9 like this.

Claims

1, a kind of foam gun shank hermetically-sealed construction, between shank and rifle body, comprise the O RunddichtringO, be provided with annular seal space in the rifle body, the outside screw of annular seal space is connected with hold-down bolt, and the O RunddichtringO is arranged in the annular seal space, shank passes annular seal space and hold-down bolt, the O RunddichtringO is socketed on the shank, it is characterized in that: be provided with annular shim between hold-down bolt and O RunddichtringO, pad is socketed on the shank.

2, foam gun shank hermetically-sealed construction as claimed in claim 1, it is characterized in that: described O RunddichtringO is a plurality of, and they are arranged in the annular seal space side by side.

3, foam gun shank hermetically-sealed construction as claimed in claim 1 or 2 is characterized in that: described O RunddichtringO also is provided with a pad with respect to another of described pad is distolateral.

4, foam gun shank hermetically-sealed construction as claimed in claim 1 or 2, it is characterized in that: the external diameter of described pad is slightly less than the external diameter of O RunddichtringO.