CN2356188Y

CN2356188Y - Fully sealed ceramic flashboard valve

Info

Publication number: CN2356188Y
Application number: CN 99200151
Authority: CN
Inventors: 王列昭; 马俊峰; 王鸿波; 刘玉华
Original assignee: HUIFENG NEW-TECHNOLOGY Co Ltd ZHENGZHOU CITY
Current assignee: HUIFENG NEW-TECHNOLOGY Co Ltd ZHENGZHOU CITY
Priority date: 1999-01-07
Filing date: 1999-01-07
Publication date: 1999-12-29
Anticipated expiration: 2009-01-07

Abstract

The utility model relates to a fully sealed ceramic flashboard valve used for the pneumatic conveyance of granule medium. The flashboard valve comprises a left board type valve seat, a right board type valve seat and a flashboard matched with the two valve seats by sliding and swinging. The utility model is characterized in that the inner end openings of the valve seats matched with the flashboard are inlaid with ceramic rings. When the flashboard valve is in the closing state, the position of the flashboard corresponding to the ceramic rings is inlaid with a ceramic board. The inner part of the area in the valve seats from the ceramic rings to the position of the flashboard moving to the closed position is provided with an extended sealing plane which is matched with the flashboard by sliding. The utility model prolongs the service life of the valve and solves the sealing problem of the pipeline and the inner chamber of the valve to enable the operation of the pipeline system to be economic and reliable.

Description

Hermetically sealed ceramic gate valve

The utility model relates to a kind of valve, relates in particular to sliding pendulum ceramic gate valve movingly between flashboard that a kind of strength that is used for granule carries and the valve seat.

It is a very important field that the strength of granule is carried.For example the heat power plant boiler flying dust is after capturing, and the method that generally adopts negative pressure or malleation strength to carry is delivered to grey storehouse.Strength is carried and is gone up the metal valve that uses, its valve flashboard and valve seat are steel structure, and because of the impact and the valve opening and closing motion friction of the media particle that is subjected to high-speed motion, sealing station will soon wear and tear and lose efficacy in conveying, therefore life of valve is very short, and waste and loss are serious.In addition, existing gate valve is in opening-closing process, and conveyance conduit and valve pocket are communicated with, and causes valve pocket inside especially easily to be stopped up by the media particle deposition bottom, makes valve be difficult to close or be difficult to and closes fully, influences the normal switching of system and the reliability of operation.

At above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of hermetically sealed ceramic gate valve, with working life of prolonging valve and make valve cavity and pipeline between sealing mutually.

In order to achieve the above object, the technical solution of the utility model is to have adopted a kind of hermetically sealed ceramic gate valve, comprise left and right sides two boards formula valve seat and the flashboard that can between the board-like valve seat in the left and right sides, swing, on a side ports internal diameter of the close flashboard of the board-like valve seat in the left and right sides, respectively be embedded with a ceramic ring, the disc position corresponding with ceramic ring studs with a ceramic plate on the flashboard when valve cuts out, the one extension sealing plane that is slidingly matched with flashboard is respectively arranged on the board-like valve seat in the left and right sides, and the sealing plane is concordant with ceramic ring and begin to extend to the final plant closure position to flashboard closing movement direction from the ceramic ring of board-like valve seat.

The ceramic plate of inlaying on the described flashboard is a plectane, and the external diameter of this plectane is greater than the internal diameter of described ceramic ring.

The internal diameter of described ceramic ring equates with valve seat inner tube surface internal diameter.

The utlity model has following beneficial effect as can be seen from technique scheme: 1, the corresponding position of closed position and valve seat inner port is inlaid with ceramic plate and ceramic ring on the flashboard, make valve lean on the cooperation between the ceramic flat surface to form sealing, because of ceramic hardness is higher than steel hardness and is much higher than media particle hardness, so the speed that sealing part is worn significantly reduces, is much higher than the working life of steel valve working life of the present utility model, this has not only significantly reduced the amount of expending and the amount of maintenance of applying unit, and having improved the degree of reliability of pipe-line system greatly, only this item just can bring very high economic benefit to the user; 2, be provided with the sealing plane of extension on the valve seat after, make flashboard in the process that swing opens and closes, all the time the extension sealing plane of being close on the valve seat slides, make interior other space of pipeline and valve pocket be in isolation all the time, thereby realized the overall process sealing of pipeline and valve pocket having solved the deposition problems of medium in valve pocket effectively, improved the reliability of valve operation, reduce the sedimental frequency of cleaning cavity, guaranteed the normal operation of pipeline.

The utility model is further explained and explanation below in conjunction with accompanying drawing:

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

Fig. 2 is the structural representation of board-like valve seat among Fig. 1;

Fig. 3 is the structural representation of flashboard among Fig. 1;

Fig. 4 is an opening-closing process schematic representation of the present utility model.

Among Fig. 1 to Fig. 4, the utility model mainly is made of left and right sides two boards formula valve seat 1,4 and flashboard 7.Flashboard is assemblied in swingably by rotating shaft 6 between the rotation hole 13 of valve seat 1,4, and the external end head of rotating shaft 6 is fixed with operation connecting lever 5.Two boards formula valve seat 1,4 bilateral symmetry make-ups are fixed together.As shown in Figure 4, when the utility model swings to the rightmost side at flashboard, spacing by spacing point 16, the through hole 17 of flashboard 7 makes the complete conducting of pipeline, valve is in opening state, and when flashboard was rocked to the leftmost side, spacing point 18 was spacing, the ceramic plate 9 of flashboard 7 is closed pipeline fully, and valve is in closed condition.The outer rim of left and right sides valve seat is smooth continuous outer convex globoidal, be distributed with six fixed holes 15 near the edge, the rotation hole 13 of one rotating shaft 6 is arranged at top, one port that is connected with pipeline is arranged below rotation hole 13, be adjacent to mutually on the inboard port of cooperation with flashboard and be embedded with a ceramic ring 8, begin the one extension sealing plane 14 that is sealed and matched mutually with flashboard 7 is arranged from ceramic ring to the end positions of flashboard 7 when opening state moves to closed condition with the ceramic ring end face is concordant.Extend between sealing plane 14 makes through hole 17 on the flashboard and pipeline that is connected with through hole 17 and valve in opening-closing process the inner chamber and be in isolation all the time, avoid the media particle inner chamber that bleeds to cause flashboard swing to be obstructed, guaranteed the pipeline reliability of operation.Left and right sides two boards formula valve seat is fastening by 12 nuts 11 by six screw rods 12, is coated with in the centre of each screw rod to regulate pad 10.With fastening hoop 3 rubber strip 2 is pressed between valve cavity and the external environment and reaches sealing on the peripheral clearance.Fastening hoop 3 relies on snap close 19 lockings of jointing.

Claims

1, a kind of hermetically sealed ceramic gate valve, comprise left and right sides two boards formula valve seat and the flashboard that can between the board-like valve seat in the left and right sides, swing, it is characterized in that on a side ports internal diameter of the close flashboard of the board-like valve seat in the left and right sides, respectively being embedded with a ceramic ring, the disc position corresponding with ceramic ring studs with a ceramic plate on the flashboard when valve cuts out, the one extension sealing plane that is slidingly matched with flashboard is respectively arranged on the board-like valve seat in the left and right sides, and the sealing plane is concordant with ceramic ring and begin to extend to the final plant closure position to flashboard closing movement direction from the ceramic ring of board-like valve seat.

2, ceramic gate valve according to claim 1 is characterized in that the ceramic plate of inlaying on the described flashboard is a plectane, and the external diameter of this plectane is greater than the internal diameter of described ceramic ring.

3, ceramic plate valve according to claim 1 and 2 is characterized in that the internal diameter of described ceramic ring equates with valve seat inner tube surface internal diameter.