CN201363441Y

CN201363441Y - Novel double-gate valve

Info

Publication number: CN201363441Y
Application number: CNU2009201487936U
Authority: CN
Inventors: 虞瑞鹤; 瞿进
Original assignee: AUXILIARY MACHINERY WORKS ZHENJIANG CITY POWER STATION
Current assignee: AUXILIARY MACHINERY WORKS ZHENJIANG CITY POWER STATION
Priority date: 2009-03-30
Filing date: 2009-03-30
Publication date: 2009-12-16
Anticipated expiration: 2019-03-30

Abstract

The utility model relates to a novel double-gate valve, which comprises a casing 1 and a valve core 2, wherein the valve core 2 is divided into a left valve core 2-1 and a right valve core 2-2; one sides of the left valve core and the right valve core are provided with grooves for installing a connecting piece 3 of the two valve cores; and the connecting piece 3 is of a hollow structure and internally provided with a sliding block 6, as well as a left stop block 5-1and a right stop block 5-2 and a left right spring 7-1and a right spring 7-2 which are arranged at the two sides of the sliding block. The double-gate valve is a hard sealing straight-through valve, is used in an air conveying system as the shutoff valve, and has more reliable sealing and longer service life of the valve due to adopting the double-gate structure for double-layer sealing.

Description

A kind of novel double-gate plate valve

Affiliated technical field

The utility model belongs to coal fired power plant Pneumatic ash conveying system field, is specifically related to a kind of novel double-gate plate valve.

Background technique

Adopt the chock structure between two flashboards that domestic double flap valve has at present, adopt hinging structure between two flashboards that have.The chock structure takes place easily that chock drops, valve can't normally open and close; Hinging structure more complicated, hinge portion rupture and bite easily, thereby influence the normal use of whole system.

The model utility content

The purpose of this utility model provides a kind of novel double-gate plate valve reliable, long service life that seals.

A kind of novel double-gate plate valve, comprise shell 1, spool 2, lifting rod 9, it is characterized in that spool 2 is divided into left spool 2-1, right spool 2-2, have groove 4-1,4-2 in left spool 2-1, the corresponding inboard of right spool 2-2, link 3 inserts in groove 4-1, the 4-2, and lifting rod 9 is fixed on the link 3.

Described link 3 is a hollow-core construction, bench-type post block 5-1, a 5-2 are arranged respectively in link 3, built-in sliding block 6 between bench-type post block 5-1,5-2, seat is on bench-type post block 5-1,5-2 respectively for the end of left and right sides spring 7-1,7-2, and the other end contacts with built-in sliding block 6.

Described link 3 is a Spielpassung in groove 4-1, the 4-2 of left spool 2-1, right spool 2-2, and the end face of link 3 and groove 4-1,4-2 interior edge face form non-contact structure.Slide block 6 and left and right sides spring 7-1,7-2, bench-type post block 5-1,5-2 are contact matching in link 3, bench-type post block 5-1,5-2 and left and right sides spool 2-1,2-2 contact matching.

The utlity model has following advantage:

1, owing to adopt the double spool structure, when a side had pressure in the pipeline, under the effect of spring force, the opposite side spool combined tightr with valve body, sealed tighter.

1, owing to adopt non-contact structure, sealing surface is more wear-resisting, longer service life.

Description of drawings

Fig. 1 is the utility model closed condition valve body structure sectional view;

Fig. 2 is the utility model spool sectional view.

Among the figure:

1, shell 2, spool 2-1, left spool

2-2, right spool 3, link 4-1,4-2, groove

5-1,5-2, bench-type post block 6, built-in sliding block 7-1, left spring

7-2, right spring 8, medium inlet 9, lifting rod

A, sealing surface

Specific embodiment

Can see from Fig. 1 and Fig. 2, two spool 2-1,2-2 about the utility model double flap valve spool 2 is divided into, about the side of two spool 2-1,2-2 have groove so that the link 3 of two spools is installed, link 3 is a hollow-core construction, bench-type post block 5-1,5-2 are arranged respectively in link 3, built-in sliding block 6 between bench-type post block 5-1,5-2, seat is on bench-type post block 5-1,5-2 respectively for the end of left and right sides spring 7-1,7-2, and the other end contacts with built-in sliding block 6.

Medium 8 inflows from the medium inlet are arranged in pipeline, when valve is in closed condition, under pressure, left side spool 2-1 has the trend that moves right, left spool 2-1 compressing left spring 7-1, and the tension force of left spring 7-1 forces slide block 6 to move right, thereby compress right spring 7-2, the reaction force of right spring 7-2 acts on the right spool 2-2 by right block 5-2, causes right spool 2-2 and valve seal tightr, thereby guarantees gate valve tight, the nothing leakage of lower seal in off position.

The sealing surface A of described spool 2-1,2-2 carries out Alloying Treatment and grinds, and makes valve sealing surface smooth surface, hardness higher.

This double-gate plate valve is used for coal fired power plant pneumatic ash handling induction system, as the pipeline switch valve, has operation The advantage such as reliability height, good airproof performance, running resistance are little is desirable regeneration product.

Claims

1, a kind of novel double-gate plate valve, comprise shell (1), spool (2), lifting rod (9), it is characterized in that spool (2) is divided into left spool (2-1), right spool (2-2), have groove (4-1,4-2) in left spool (2-1), the corresponding inboard of right spool (2-2), link (3) inserts in the groove (4-1,4-2), and lifting rod (9) is fixed on the link (3).

2, novel double-gate plate valve according to claim 1, it is characterized in that link (3) is hollow-core construction, a bench-type post block (5-1,5-2) is arranged respectively in link (3), built-in sliding block (6) between bench-type post block (5-1,5-2), seat is on bench-type post block (5-1,5-2) respectively for one end of left and right sides spring (7-1,7-2), and the other end contacts with built-in sliding block (6).

3, novel double-gate plate valve according to claim 1 and 2, it is characterized in that described link (3) is Spielpassung in the groove (4-1,4-2) of left spool (2-1), right spool (2-2), the end face of link (3) and groove (4-1,4-2) interior edge face forms non-contact structure.

4, novel double-gate plate valve according to claim 1 and 2, it is characterized in that slide block (6) and left and right sides spring (7-1,7-2), bench-type post block (5-1,5-2) are contact matching, bench-type post block (5-1,5-2) and left and right sides spool (2-1,2-2) contact matching in link (3).