Manually clamping a knife-shaped gate valve belongs to the technical field of valves. The problem to be solved is to provide a gas knife gate valve with a short structure length, a small volume, a reliable seal, and a long service life.
The composition includes a valve body, a gate plate, a valve cover, a valve stem, and a transmission mechanism. The feature is that the valve body is a planar plate-like structure and is connected to a pipe clip.
The gate adopts a single gate plate, one side is sealed with the valve body valve seat, and the back face is in wedge-shaped contact with the other side of the valve body, and the sealing surface is opposite to the flow direction of the medium.
In the wedge-shaped contact structure, a wedge-shaped compression block is arranged on the back of the sealing surface, and the adjustment thread is arranged on the other side of the valve body corresponding to the compression block.
The utility model has a short length of the valve body structure, a light weight, the sealing surface of the valve seat can be protected from the medium scouring, the sealing surface is pressed evenly, the sealing is tight, and dust particles, tar, etc. on the sealing surface of the valve seat can be scraped during the closing process. Easy to walk and drain.
Suitable for use in gas pipelines containing dust or tar.
1. Manually clamped knife gate is a new type of gate valve, small in size, light in weight and light in material saving. It is an ideal product in sewage, coal slurry, mud, air, slag water mixture, water supply, papermaking and mine waiting industries.
2. Manually use a metal-to-metal hard seal for the knife gate or a metal-to-rubber soft seal. In the process of opening and closing, the gate and the sealing surface adopt a special design with less friction and durability.
3. The upper seal of the knife-shaped shutter is manually broken through the conventional seal form, and the upper cover structure is adopted, so that the upper seal is changed from a large-area rectangular seal to a small-area circumferential seal, and the sealing performance is greatly improved. On the basis of the circumferential seal, it adopts the current international advanced floating seal structure, so that the upper seal achieves the same degree of life as the pipeline, thereby improving the service life of the valve as a whole.
4. Manually clamping the knife-shaped brake gate After installing the enveloping device on the top of the hand wheel, all the moving parts of the valve can be closed. The screw drive of the gate plate and the valve stem will not be stuck due to the dryness of the lubricant.
Particularly suitable for long-term normal operation in dusty and dry harsh environments.
The composition includes a valve body, a gate plate, a valve cover, a valve stem, and a transmission mechanism. The feature is that the valve body is a planar plate-like structure and is connected to a pipe clip.
The gate adopts a single gate plate, one side is sealed with the valve body valve seat, and the back face is in wedge-shaped contact with the other side of the valve body, and the sealing surface is opposite to the flow direction of the medium.
In the wedge-shaped contact structure, a wedge-shaped compression block is arranged on the back of the sealing surface, and the adjustment thread is arranged on the other side of the valve body corresponding to the compression block.
The utility model has a short length of the valve body structure, a light weight, the sealing surface of the valve seat can be protected from the medium scouring, the sealing surface is pressed evenly, the sealing is tight, and dust particles, tar, etc. on the sealing surface of the valve seat can be scraped during the closing process. Easy to walk and drain.
Suitable for use in gas pipelines containing dust or tar.
1. Manually clamped knife gate is a new type of gate valve, small in size, light in weight and light in material saving. It is an ideal product in sewage, coal slurry, mud, air, slag water mixture, water supply, papermaking and mine waiting industries.
2. Manually use a metal-to-metal hard seal for the knife gate or a metal-to-rubber soft seal. In the process of opening and closing, the gate and the sealing surface adopt a special design with less friction and durability.
3. The upper seal of the knife-shaped shutter is manually broken through the conventional seal form, and the upper cover structure is adopted, so that the upper seal is changed from a large-area rectangular seal to a small-area circumferential seal, and the sealing performance is greatly improved. On the basis of the circumferential seal, it adopts the current international advanced floating seal structure, so that the upper seal achieves the same degree of life as the pipeline, thereby improving the service life of the valve as a whole.
4. Manually clamping the knife-shaped brake gate After installing the enveloping device on the top of the hand wheel, all the moving parts of the valve can be closed. The screw drive of the gate plate and the valve stem will not be stuck due to the dryness of the lubricant.
Particularly suitable for long-term normal operation in dusty and dry harsh environments.
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