CN201330873Y

CN201330873Y - Swing check valve capable of realizing hermetic sealing

Info

Publication number: CN201330873Y
Application number: CNU2008201243119U
Authority: CN
Inventors: 张清双; 王楠
Original assignee: BEIJING VALVE GENERAL FACTORY GROUP Co Ltd
Current assignee: BEIJING VALVE GENERAL FACTORY GROUP Co Ltd
Priority date: 2008-12-05
Filing date: 2008-12-05
Publication date: 2009-10-21
Anticipated expiration: 2018-12-05

Abstract

A swing check valve capable of realizing hermetic sealing belongs to the technical field of valves, which is mainly a simplified structure and can realize hermetic sealing. A valve clack (2) is provided with a rocker arm (3) which is integrally processed with the valve clack (2); a lug boss (6) which is integrally processed with a valve body (1) is formed therein; and a pin shaft (4) is hinged with the rocker arm (3) and fixed on the lug boss (6) through a fastener. The utility model has the advantages of fewer components, little tolerance accumulation, realization of good hermetic sealing, small inner chamber of the valve body, small spherical cambered surface body, simple structure, less consumptive material, low cost, small resistance to flow medias, and easy assembly and maintenance.

Description

Can realize the Swing check valve of hermetic seal

Technical field

The utility model belongs to valve technology field, relates to a kind of Swing check valve that can realize hermetic seal.

Background technique

The structure of the Swing check valve that adopts is at present, by fastening piece rocking arm is housed on the flap; rocking arm and support are hinged together by bearing pin; and support is contained on the boss of valve inner by fastening piece again; complex structure; again because component are many; cause tolerance stack big; the center line of sealing pair misaligns when causing assembling; can not well realize hermetic seal, and the inner chamber of valve body is big, particularly wherein the ball-type contour body of pars infrasegmentalis is big; not only consumptive material is many, and big to the resistance of flowing medium.

Summary of the invention

The technical problem that solves:

Simplify the structure of Swing check valve, can overcome the deficiencies in the prior art, can well realize hermetic seal, component are few, and are simple in structure, and the inner chamber of valve body is little, and consumptive material is few, and cost is low, and little to the resistance of flowing medium.

The technological scheme that adopts:

Can realize the Swing check valve of hermetic seal, have valve body, be positioned at valve seat on the valve body, be contained in valve body flap, be contained in seal ring and closedtop lid on the flap, it is characterized in that: flap has the rocking arm that processes with its integral body, have the boss that processes with its integral body in the valve body, the bearing pin of articulated rocking arm is fixed on the boss by fastening piece.

Beneficial effect:

Component are few, and tolerance stack is very little, and the center line height centering of sealing pair can well be realized hermetic seal during assembling, the inner chamber of valve body is little, and the ball-type contour body of its underpart is little, and therefore not only simple in structure, consumptive material is few, cost is low, and little to the resistance of flowing medium, easily assembling, easy care.

Description of drawings

Fig. 1, main assembly structural representation;

Fig. 2, by A-A sectional view shown in Figure 1;

Fig. 3, by the local amplification view of B-B shown in Figure 2;

Embodiment

Further explanation in detail in conjunction with the accompanying drawings;

Among the figure: 12-valve seat, 13-seal ring, 14-closedtop lid;

As shown in Figure 1, 2, 3, flap 2 has the rocking arm 3 that processes with its integral body, has in the valve body 1 and its integral body boss 6 that process and that be threaded the hole, and the bearing pin 4 of articulated rocking arm 3 is fixed on the boss 6 by bolt 5; On two flat terminations 7 of exposing of bearing pin 4, have the open-work 8 supporting with bolt 5, bolt 5 passes in the rectilinear tapped hole that is tightened in boss 6 of open-work 8.

As shown in Figure 1, pars infrasegmentalis in the inner chamber of valve body 1 has when opening with flap 2, the ball-type contour body 10 that spherical track that its corresponding cylindrical camber line is walked 9 is supporting, all the other most of column type face bodies 11 that all transition be and the cylinder type adapter is supporting.

Claims

1, can realize the Swing check valve of hermetic seal, have valve body, be positioned at valve seat on the valve body, be contained in valve body flap, be contained in seal ring and closedtop lid on the flap, it is characterized in that: flap has the rocking arm that processes with its integral body, have the boss that processes with its integral body in the valve body, the bearing pin of articulated rocking arm is fixed on the boss by fastening piece.

2, the Swing check valve that can realize hermetic seal according to claim 1, it is characterized in that: pars infrasegmentalis in the inner chamber of valve body (1), have and flap (2) when opening, the supporting ball-type contour body (10) of spherical track (9) that its corresponding cylindrical camber line is walked, all the other equal transition are to take over supporting column type face body (11) with cylinder type.

3, the Swing check valve that can realize hermetic seal according to claim 1 and 2 is characterized in that: the bearing pin (4) of articulated rocking arm (3) is fixed on the boss (6) by bolt (5); On two flat terminations (7) of exposing of bearing pin (4), have and the supporting open-work (8) of bolt (5), bolt (5) passes in the rectilinear tapped hole that is tightened in boss (6) of open-work (8).