阅读说明：本技术 一种带吹扫的全密封插板阀 (Full-sealed gate valve with purging function ) 是由 赵荣志 朱晓捷 张秋林 郑建军 周立伟 于 2020-07-09 设计创作，主要内容包括：本发明提供一种带吹扫的全密封插板阀,属于插板阀技术领域。该装置包括阀体、阀板、连接杆、驱动装置及上盖板,在阀体进料口设置有向内收口的密封板,在阀体的下部设置导料溜槽,在导料溜槽内壁贴有聚四氟乙烯板,同时设置吹扫管,阀体内部两侧设置导线滚轮,阀板整体位于阀体内部,阀板放置在阀体内部滚轮上,阀板通过连接杆与驱动装置相连,阀板下部左右两侧各设置一个楔形顶紧条,阀体上盖板设置有检修孔。本发明通过将阀板行程范围整体密封、采用顶紧的方式,实现阀门的密封以避免漏灰,同时减小了阀门动作时,密封条带来的阻力。(The invention provides a full-sealed gate valve with a purging function, and belongs to the technical field of gate valves. The device includes the valve body, the valve plate, the connecting rod, drive arrangement and upper cover plate, be provided with the closing plate of inside binding off at the valve body feed inlet, set up the guide chute in the lower part of valve body, it has the polytetrafluoroethylene board to paste at guide chute inner wall, set up simultaneously and sweep the pipe, the inside both sides of valve body set up the wire gyro wheel, the valve plate wholly is located inside the valve body, the valve plate is placed on the inside gyro wheel of valve body, the valve plate passes through the connecting rod and links to each other with drive arrangement, the valve plate lower part left and right sides respectively sets up a wedge top tight strip, the valve. The valve plate stroke range is integrally sealed, the jacking mode is adopted, the valve is sealed to avoid ash leakage, and meanwhile, the resistance brought by the sealing strips during the valve action is reduced.)

1. The utility model provides a totally enclosed push-pull valve that area was swept which characterized in that: the valve comprises a valve body (1), a valve plate (2), a connecting rod (3), a driving device (4) and an upper cover plate (9), a sealing plate (5) with an inward closing opening is arranged at a feed inlet of the valve body (1), a material guide chute (10) is arranged at the lower part of the valve body (1), a lining plate (11) is pasted on the inner wall of the material guide chute (10), a back flushing pipe (12) is arranged at the middle upper part of the material guide chute (10), wire rollers (6) are arranged at the two sides inside the valve body (1), the valve plate (2) is integrally located inside the valve body (1), the valve plate (2) is placed on the wire rollers (6) inside the valve body (1), the valve plate (2) is connected with the driving device (4) through the connecting rod (3), wedge-shaped jacking strips (7) are respectively arranged at the left side and the right side of the lower part.

2. The purged full-seal gate valve according to claim 1, wherein: the material guide chute (10) is arranged on one side, close to the connecting rod (3), of the lower portion of the valve body (1), the material guide chute (10) is provided with an inclination, and the inclined surface of the material guide chute and the level form an included angle of 20-40 degrees.

3. The purged full-seal gate valve according to claim 1, wherein: the lining plate (11) is a polytetrafluoroethylene plate.

4. The purged full-seal gate valve according to claim 1, wherein: the blowback pipe (12) is arranged at the upper part 1/3 of the side wall of the material guide chute.

5. The purged full-seal gate valve according to claim 1, wherein: when the valve is applied, the valve plate (2) is connected with the driving device (4) through the connecting rod (3), and the driving device (4) provides power to realize the opening and closing of the valve; when the valve is in an open state, conveying materials are normally conveyed through the blanking channel, a gap is formed between the valve plate (2) and the sealing plate (5), a small amount of materials leak into the material guide chute (10) through the gap between the valve plate (2) and the sealing plate (5), and the materials entering the material guide chute (10) converge into a valve body discharge hole; when the valve is closed, the valve plate (2) moves to the leftmost side, the wedge-shaped jacking strip (7) at the lower part of the valve plate (2) and the wire roller (6) on the inner side of the valve body (1) mutually act, the valve plate (1) is integrally jacked upwards, the valve plate and the sealing plate (5) are completely attached, and the materials are completely blocked.

Technical Field

The invention relates to the technical field of gate valves, in particular to a full-sealed gate valve with purging.

Background

The gate valve is the main equipment for controlling the flow in the process of storing and conveying materials such as granular materials, powdery materials, liquid and the like. The valve plate of the gate valve is always in close contact with the valve seat, the valve body is a channel which leads to the same channel, the valve plate is translated under the action of a manual or pneumatic actuator, the size of the channel of the valve body is changed or completely closed through the translation of the valve plate, so that the material flow is controlled or the material is cut off, and the valve plate and the valve body or a sealing material are always in a sliding friction state in the action process of the valve plate. The gate valve is widely applied to a plurality of fields of metallurgy, building materials, environmental protection, grain and the like, and in practical application, the gate valve is often used as important equipment for ash discharge of an ash hopper of a dust remover and plays a key role in a dust remover system.

As in the Chinese patent: CN210050320U "a novel totally enclosed leak protection ash push-pull valve device", the method that the patent described sets up vertical sealed pad in valve plate exit, and sealed pad is provided with clamp bolt, and sealed pad can have wearing and tearing after the long-time operation of valve, compresses tightly vertical sealed pad through rotatory clamp bolt, ensures that the push-pull valve is acted upon one's own power and can not leak ash to guarantee operational environment.

The gate valve is often regarded as the important equipment of dust remover ash bucket ash discharge, and the gate valve that uses at present can appear valve plate wearing and tearing, corrosion, the wearing and tearing of sealing gasket etc. after long-time operation, and the clearance increases between valve plate and the valve body. Because the particle size of the materials trapped by the dust remover is very small, dust leakage can occur in a small gap between the valve plate and the valve body. But adopt secondary compression sealing gasket, the valve plate is in the state of compressing tightly with sealing gasket always, can greatly increased the valve plate open with close required power. The model selection of the valve actuator is increased, and the diameter of the valve rod is also increased.

Disclosure of Invention

The invention aims to provide a full-sealed gate valve with purging. The valve plate stroke area of the gate valve is fully sealed, the valve plate and the sealing plate are tightly pushed through the wedge-shaped pushing strip arranged on the lower portion of the valve plate, and sealing of the valve under the condition of full closing is achieved. The problems of valve closing blockage and leakage caused by the valve plate not being closed in place after the valve runs for a long time in the prior art are solved.

The device includes the valve body, the valve plate, the connecting rod, drive arrangement and upper cover plate, be provided with the closing plate of inside binding off at the valve body feed inlet, set up the guide chute in the lower part of valve body, the interior welt has been pasted at guide chute inner wall, upper portion sets up the blowback pipe in the guide chute simultaneously, the inside both sides of valve body set up the wire gyro wheel, the valve plate is whole to be located inside the valve body, the valve plate is placed on the inside wire gyro wheel of valve body, the valve plate passes through the connecting rod and links to each other with drive arrangement, the valve plate lower part left and right sides respectively sets up a wedge top tight.

The guide chute sets up in the valve body lower part and is close to connecting rod one side, and the guide chute is provided with the inclination, and guide chute inclined plane is 20~40 contained angles with the level.

The lining plate is a polytetrafluoroethylene plate. The blowback pipe is arranged at the upper part 1/3 of the side wall of the material guide chute.

When the gate valve is applied, the valve plate is connected with the driving device through the connecting rod, and the driving device provides power to open and close the valve; when the valve is in an open state, conveying materials are normally conveyed through the blanking channel, a gap exists between the valve plate and the sealing plate, a small amount of materials leak into the material guide chute through the gap between the valve plate and the sealing plate, and the materials entering the material guide chute converge into a discharge hole of the valve body; when the valve is closed, the valve plate moves to the leftmost side, the wedge-shaped jacking strip at the lower part of the valve plate and the guide wire roller on the inner side of the valve body interact with each other to jack the valve plate integrally upwards, so that the valve plate is completely attached to the sealing plate, and the material is completely blocked.

The technical scheme of the invention has the following beneficial effects:

the valve plate stroke range is integrally sealed, the jacking mode is adopted, the valve is sealed to avoid ash leakage, and meanwhile, the resistance brought by the sealing strips during the valve action is reduced.

Drawings

FIG. 1 is a schematic structural view of a fully sealed gate valve with purge of the present invention;

FIG. 2 is a top view of the fully sealed gate valve with purge of the present invention;

fig. 3 is a partially enlarged schematic view of the fully sealed gate valve with purge of the present invention.

Wherein: 1-valve body, 2-valve plate, 3-connecting rod, 4-driving device, 5-sealing plate, 6-wire roller, 7-wedge-shaped jacking strip, 8-inspection hole, 9-upper cover plate, 10-guide chute, 11-lining plate and 12-back-blowing pipe.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides a full-sealed gate valve with purging.

As shown in fig. 1 and fig. 2, the device comprises a valve body 1, a valve plate 2, a connecting rod 3, a driving device 4 and an upper cover plate 9, a sealing plate 5 which is inward closed is arranged at a feed inlet of the valve body 1, a material guide chute 10 is arranged at the lower part of the valve body 1, the material guide chute 10 is provided with an inclination, an inner lining plate 11 is attached to the inner wall of the material guide chute 10, a back-blowing pipe 12 is arranged in the material guide chute 10, wire rollers 6 are arranged on two sides in the valve body 1, the valve plate 2 is integrally positioned in the valve body 1, the valve plate 2 is placed on the wire rollers 6 in the valve body 1, the valve plate 2 is connected with a driving device 4 through a connecting rod 3, the driving device 4 selects manual operation, pneumatic operation or electric operation according to actual conditions, the valve is opened and closed by the power provided by the driving device 4, the left side and the right side of the lower part of the valve plate 2 are respectively provided with a wedge-shaped jacking strip 7, and the upper cover plate 9 of the valve body is provided with an inspection hole 8.

In practical application, the gate valve is arranged at the bottom of a vertical blanking pipeline or an ash bucket, the inlet of the valve is arranged below the upper outlet, and materials pass through a valve body channel from top to bottom under the action of gravity. The driving device 4 can be selected to be manual, electric or pneumatic according to actual conditions, and the driving device 4 provides power to realize the opening and closing of the valve. As shown in fig. 3, when the valve is in an open state, the conveyed material is normally conveyed through the blanking channel, a certain gap exists between the valve plate 2 and the sealing plate 5, a small amount of material can leak into the material guiding chute 10 through the gap between the valve plate 2 and the sealing plate 5, the material guiding chute 10 is provided with a certain inclination, an inclined plane of the material guiding chute forms an included angle of 20-40 degrees with the horizontal plane, in order to prevent the material from being adhered to the inner wall of the material guiding chute 10, a polytetrafluoroethylene lining plate 11 is adhered to the inner wall of the material guiding chute 10, meanwhile, a back-blowing pipe 12 is also arranged in the material guiding chute 10, and the back-blowing pipe 12 is arranged at the upper part 1/3 of the side; the materials entering the material guiding chute 10 are converged into a discharge hole of the valve body 1 and enter the next material conveying device together. When the valve is closed, the valve plate 2 moves to the leftmost side, the wedge-shaped jacking strip 7 on the lower portion of the valve plate interacts with the roller 6 on the inner side of the valve body 1, the valve plate 2 is integrally jacked upwards and completely attached to the sealing plate 5, complete blocking of materials is achieved, and the valve can be cleaned through the blowback pipe 12 in the material guide chute 10 when the valve is closed. The connection between the valve plate and the connecting rod can be checked and maintained by opening the access hole 8 on the upper cover plate 9.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.