CN201262242Y

CN201262242Y - Wedge-type sluice valve with self-compensation function

Info

Publication number: CN201262242Y
Application number: CNU2008201858626U
Authority: CN
Inventors: 李昌跃; 张甲春; 李海伟; 刘慎良
Original assignee: JIANGSU YANDAIN VALVE CO Ltd
Current assignee: JIANGSU YANDAIN VALVE CO Ltd
Priority date: 2008-09-12
Filing date: 2008-09-12
Publication date: 2009-06-24
Anticipated expiration: 2018-09-12

Abstract

The utility model provides a wedge type gate valve with automatic compensation function, which comprises a valve body, a valve cap, a gate plate, a hand wheel and a valve-stem nut. A communicating medium passage is formed on the valve body; the valve cap is mounted at an upper opening of the valve body; the gate plate arranged in the valve body is mounted at the lower end of a valve stem, and the hand wheel is mounted at the upper end of the valve stem, which passes through the valve cap; the valve-stem nut is sleeved on the valve stem through threads and connected with the hand wheel; the gate plate is a combined type gate plate including left and right gate plates, a top core, a gate plate support as well as upper and lower baffles; the left and the right gate plates are respectively arranged on the two sides of the gate plate support, and the middle parts of the left and the right gate plates pass through a middle hole of the gate plate support and are movably articulated together through the top core with a ball head; and the upper and the lower baffles are respectively mounted at the upper and the lower ends of the gate plate support, and flanges capable of movably buckling the left and the right gate plates are formed on the edges of both the upper and the lower baffles. The utility model effectively reduces processing difficulty of the sealing surface of the gate plate, saves manufacture cost, improves sealing effect, greatly reduces operating torque and facilitates operation.

Description

A kind of Wedge gate valve with automatic compensation function

Technical field

The utility model is a valve, particularly a kind of Wedge gate valve with automatic compensation function.

Background technique

At present, the flashboard of Wedge gate valve often adopts the elastic groove structure to come compensating sealing surface angle of wedge machining error, but because the sealing surface machining accuracy is very high, manufacturing procedure is also a lot, and accumulated error is also just big, and it is limited that elastic groove is subjected to its compensation ability that limits of structure, especially therefore the heavy caliber high pressure valve relies on the elastic groove structure to compensate angle of wedge error and has been difficult to make Wedge gate valve to reach the effect of sealing fully, and, operational torque is big, uses inconvenience.

The model utility content

For overcoming the deficiencies in the prior art part, the utility model provides a kind of rational in infrastructure, easy to use, wearing and tearing are little, the life-span is long hard seal ball valve.

In order to overcome existing Wedge gate valve sealing surface difficult processing, can not full remuneration angle of wedge error, the deficiency of sealing effect difference, the utility model provides a kind of Wedge gate valve with automatic compensation function, this valve is not only processed simply, and the angle of wedge machining error of the complete automatic compensation sealing pair of energy, valve body sealing surface and flashboard sealing surface can be fitted like a glove, reach desirable sealing effect.

The technological scheme that its technical problem that solves the utility model adopts is: it comprises valve body, valve gap, flashboard, valve rod, handwheel, Stem Mut; Offer the medium channel of perforation on the valve body, valve gap is equipped with in the upper shed of valve body; The flashboard that places in the valve body is equipped with in the lower end of valve rod, and the upper end is passed valve gap handwheel is housed; Stem Mut places on the valve rod and with handwheel by thread bush and links to each other; It is characterized in that: described flashboard is the combined type flashboard that comprises left and right flashboard, plunger tip, flashboard support and upper and lower baffle plate, the be placed in both sides of flashboard support of left and right flashboard, the middle part mesopore by the flashboard support is movably hinged with the plunger tip of dribbling head; Upper and lower baffle plate is sub-packed in the upper/lower terminal of flashboard support, and the outer rim activity of being equipped with of upper and lower baffle plate fastens the flange of left and right flashboard, and the upper end of flashboard support links to each other with the lower end of valve rod.The sealing surface of such two shoe brake plates just can change with the angle of wedge of valve body sealing surface when closing, and makes the seal pressure distributed uniform of sealing surface, reaches the purpose of sealing.

For guaranteeing the upper and lower operation of combined type flashboard, be provided with guiding groove in the both sides of flashboard support, and be provided with the guiding rib that snaps in this guiding groove accordingly on the surface of body cavity.

The beneficial effects of the utility model are: reduce the difficulty of processing of flashboard sealing surface effectively, saved fabricating cost, improved sealing effect, reduced operational torque widely, and easy to use.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation;

Fig. 2 is the A-A sectional view of Fig. 1.

Among the figure: 1 is valve body, and 2 is screw, and 3 is lower pedal, 4 is the flashboard support, and 5 is left flashboard, and 6 is plunger tip, 7 is right flashboard, and 8 is pin, and 9 is overhead gage, 10 is locking nut, and 11 is valve rod, and 12 is bolt, 13 is nut, and 14 is valve gap, and 15 is bearing pin, 16 is swing bolt, and 17 is nut, and 18 is handwheel, 19 is round nut, and 20 is gland, and 21 is Stem Mut, 22 is Gland, and 23 is the filler gland, and 24 is filler, 25 is upper seal support, and 26 is pad, and 27 is medium channel, 28 is guiding groove, and 29 is guiding rib.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further specified:

The utility model comprises valve body 1, valve gap 14, flashboard, valve rod 11, handwheel 18 and Stem Mut 21; Offer the medium channel 27 of perforation on the valve body 1, valve gap 14 is loaded in the upper shed of valve body 1 by bolt 12 and nut 13,, and with pad 26 sealing.Described flashboard is the combined type flashboard that comprises left and

right flashboard

5,7, plunger tip 6, flashboard support 4 and upper and

lower baffle plate

9,3, the be placed in both sides of flashboard support 4 of left and

right flashboard

5,7, the mesopore of middle part by flashboard support 4 is movably hinged with the plunger tip 6 of dribbling, the dual-side of flashboard support 4 is provided with guiding groove 28, matches with guiding rib 29 on valve body 1 inner chamber; The combined type flashboard can be slided freely on the valve body guiding rib, upper and

lower baffle plate

9,3 is loaded on the upper/lower terminal of flashboard support 4 respectively by locking nut 10 and screw 2, the outer rim activity of being equipped with of upper and

lower baffle plate

9,3 fastens the flange of left and

right flashboard

5,7, left and right like this

flashboard

5,7 just can be in interstice coverage activity freely, with the angle of wedge error of automatic compensation valve body 1 sealing surface.The upper end of flashboard support 4 adopts screw thread to link to each other with the lower end of valve rod 11, and close-fitting pin 8 is locking; The upper end of valve rod 11 is passed valve gap 14 handwheel 18 is housed; With filler 24 sealing, at the upper and lower filler gland 23 and the upper seal support 25 of being respectively equipped with of filler 24, filler gland 23 compresses by Gland 22 and bearing pin, swing bolt 16, nut 17 between valve rod 11 and the valve gap 14.Stem Mut 21 places on the valve rod 11 by thread bush, and spacing by 20 on the gland that is loaded on valve gap 14 upper ends; Stem Mut 21 is connected with handwheel 18 with round nut 19.

During work, rotate handwheel 18, driving Stem Mut 21 rotates, because Stem Mut 21 is a screw-thread fit with valve rod 11, and Stem Mut 21 is subjected to spacing can only the rotation of gland 20 and can not moves, and institute is so that valve rod 11 moves up and down, because flashboard support 4 is subjected to the leading role of guiding groove 28 and guiding rib 29, move up and down thereby drive the combined type flashboard, realize the keying of gate valve.

Claims

1, a kind of Wedge gate valve with automatic compensation function comprises valve body, valve gap, flashboard, valve rod, handwheel, Stem Mut; Offer the medium channel of perforation on the valve body, valve gap is equipped with in the upper shed of valve body; The flashboard that places in the valve body is equipped with in the lower end of valve rod, and the upper end is passed valve gap handwheel is housed; Stem Mut places on the valve rod and with handwheel by thread bush and links to each other; It is characterized in that: described flashboard is the combined type flashboard that comprises left and right flashboard, plunger tip, flashboard support and upper and lower baffle plate, the be placed in both sides of flashboard support of left and right flashboard, the middle part mesopore by the flashboard support is movably hinged with the plunger tip of dribbling head; Upper and lower baffle plate is sub-packed in the upper/lower terminal of flashboard support, and the Zhou Lian activity of being equipped with of upper and lower baffle plate fastens the flange of left and right flashboard, and the upper end of flashboard support links to each other with the lower end of valve rod.

2, a kind of Wedge gate valve with automatic compensation function according to claim 1, it is characterized in that: the both sides at the flashboard support are provided with guiding groove, and are provided with the guiding rib that snaps in this guiding groove accordingly on the surface of body cavity.