CN2872042Y

CN2872042Y - Concavo-convex bonded sealed flange disk

Info

Publication number: CN2872042Y
Application number: CN 200520029536
Authority: CN
Inventors: 王洪才
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-12
Filing date: 2005-12-12
Publication date: 2007-02-21
Anticipated expiration: 2015-12-12

Abstract

The utility model relates to a concave-convex slot key type sealing flange, belonging to the technical field of flange connection, in particular to a flange using concave-convex slot key to seal, which comprises a flange with annular convex keys and a flange with annular concave slots, the flange with annular convex keys is through-hole in the center and is provided with annular convex keys on the surface and is provided with a plurality of connection holes at the edge; The flange with annular concave slots is through-hole in the center and is provided with annular concave slots matching with annular convex keys on the surface, and is provided with a plurality of connection holes at the edge to improve the sealing performance, when in connection, the sealing ring also can be arranged at the bottom of annular concave slots. The utility model has the advantages of simple structure, good sealing effect, reliable performance and low cost.

Description

Tongue and groove of bonding sealing flange

Technical field

The utility model belongs to flange interconnection technique field, is specifically related to a kind of flange plate that utilizes the sealing of convex-concave keyway, and international Patent classificating number is: F16L 23/032.

Background technique

At present, the flange plate of employing butt joint all is to adopt plane cushioning Butt sealing method, the disadvantage of this technology be 1. misalignment, to injustice, the run, drip, leak phenomenon will appear; 2. be that fastening screw all must be flat, neat, deviation can not appear in pad, otherwise will the run, drip, leak phenomenon; 3. pad also can occur filling up first damage with dish material difference, the run, drip, leak phenomenon occurs, directly causes serious consequence; The physical change of dish also can produce the run, drip, leak phenomenon; The plane butt joint can't be eliminated the physics minor variations of above-mentioned disk body.

Summary of the invention

Goal of the invention of the present utility model provides a kind of emboss pit butt joint, does not produce the tongue and groove of bonding sealing flange of run, drip, leak phenomenon.

The utility model is formed by having two flange plate of protruding key of ring-type and annular recess, and the described flange plate center that has the protruding key of ring-type is a through hole, and card is provided with the protruding key of ring-type, and the edge of dish has a plurality of attachment holes; The described flange plate center that has annular recess is a through hole, and card is provided with the annular recess that cooperates with the protruding key of ring-type, and the edge of dish has a plurality of corresponding attachment holes of a plurality of attachment holes that have with the flange plate edge that has the protruding key of ring-type;

The utility model has the protruding key of ring-type and two flange plate of annular recess must use in pairs;

Working procedure of the present utility model is: the flange plate that will have the flange plate of the protruding key of ring-type and have an annular recess is welded on the end of connected tube respectively, during connection that above-mentioned two flange plate are relative, the protruding key of ring-type is inserted in the annular recess, fastening with screw rod then by attachment hole, the purpose that reaches sealing of end and the surface of contact by protruding key of ring-type and annular recess like this;

In order to improve sealability, also can add seal ring during connection in the bottom of annular recess.

The utlity model has simple in structure, good sealing effect, reliable performance, the good effect that cost is low.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 has the cross-sectional configuration schematic representation of the protruding key flange plate of ring-type for the utility model;

Fig. 3 is the structural representation of looking up of Fig. 2;

Fig. 4 has the structural representation of annular recess flange plate for the utility model;

Fig. 5 is the plan structure schematic representation of Fig. 4.

Embodiment

As Figure 1-3, the utility model is by having the protruding key 4 of ring-type and 5 two flange plate of

annular recess

2 and 6 are formed, and described flange plate 2 centers that have the protruding key of ring-type are through hole 7, and card is provided with the protruding key 4 of ring-type, and the edge of dish has a plurality of attachment holes 1; Described flange plate 6 centers that have annular recess are through hole 8, and card is provided with the annular recess 5 that cooperates with the protruding key 4 of ring-type, and the edge of dish has a plurality of a plurality of attachment holes 1 corresponding attachment holes 3 that have with flange plate 2 edges that have the protruding key of ring-type;

Protruding key 4 of ring-type of the present utility model and the annular recess 5 that cooperates with it should be greater than 1.5-2 centimetres, tolerance fit can not be greater than 0.1 millimeter (being commonly called as 10 roads), sealing is by original plane, a place like this, be increased to the multiple spot sealing, simultaneously, the small physical change that occurs in the material also can disappear in the cooperation of concavo-convex sunk key, the run, drip, leak phenomenon can not occur.

When car system flange plate, can be different according to the degree of depth and the width of the different concavo-convex sunk keies of purposes, demanding connecting tube, for example oily, gas, poisonous, harmful liquid, the degree of depth of concavo-convex like this sunk key, wide, tolerance fit is little, the precision height; No matter be that the sort of purposes pipeline connects, concavo-convex sunk key add accomplish man-hour to put down, light and do not have burr, tolerance fit can not be excessive, otherwise lose the effect of sealing.

Claims

1, tongue and groove of bonding sealing flange is formed by having (5) two flange plate of protruding key of ring-type (4) and annular recess (2 and 6), it is characterized in that:

Described flange plate (2) center that has the protruding key of ring-type is through hole (7), and card is provided with the protruding key of ring-type (4), and the edge of dish has a plurality of attachment holes (1);

Described flange plate (6) center that has annular recess is through hole (8), and card is provided with the annular recess (5) that cooperates with the protruding key of ring-type (4), and the edge of dish has a plurality of attachment holes (3).