Kqz47ppl Zero Friction Expansion Ball Valve

• Customized: Customized
• Certification: ISO, API, CE
• Power: Pneumatic
• Pressure: Medium Pressure
• Brand: Xuan Cheng
• Work Temperature: Normal Temperature
• Model NO.: KQZ47PPL
• Material: Carbon Steel
• Medium: Water, Steam, Gas, etc
• Structure: Through
• Connection Mode: Flange
• Seal: Hard Seal
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: xc
• Origin: China
• HS Code: 8412310090
• Production Capacity: 10000

Product Description

. Ball valve, the opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It can also be used for fluid regulation and control, among which the V-shaped ball valve with hard seal has a strong shear force between the V-shaped ball core and the metal seat of surfacing cemented carbide, especially suitable for the medium containing fiber, small solid particles and so on. The multi-pass ball valve in the pipeline can not only flexibly control the confluence of the medium, shunt and flow direction of the switch, but also can close any channel and make the other two channels connected. This type of valve in the pipeline should generally be installed horizontally. Ball valve according to the driving mode is divided into: pneumatic ball valve, electric ball valve, manual ball valve.
. In the prior art, such as China patent number: The invention of cn110259984a discloses a zero-friction telescopic ball valve, including left, right valve body and middle valve body, the middle valve body cavity is equipped with a shaped ball, the support block in the middle round hole through the connection with a valve stem, the bottom and the middle part of the valve stem in the same direction each drilled through a round hole, the top of the valve body is installed with a bracket, The middle part of the support is provided with an inverted L-shaped slot hole, the support is installed tapered roller bearing and the valve stem nut of the round hole is equipped with a bearing gland, the upper part of the valve stem nut is processed into a hexagonal shape, the upper part of the valve stem nut is equipped with a handwheel, the cotter pin is inserted into the lower valve stem mandrel through the lower valve stem of the head of the round hole to prevent the hexagon nut loose off. When the invention realizes full opening or full closing, the stroke is short, the switching force is light, and it has the function of quickly cutting off or opening in an emergency state. At the same time, the service life is longer because there is no wear.
4 However, in the prior art, the internal valve spool is in direct contact with the outer surface of the valve body, and with the rotation of the valve, greater friction resistance and friction loss will be generated. Over time, the internal valve will have a larger gap, which is easy to leak and affects the sealing effect.


Technical realization elements:

The technical problem to be solved by the invention is that the friction loss of the existing ball valve is large, and then the internal gap affects the sealing. In order to overcome the defects of the prior art, the invention proposes a zero-friction telescopic ball valve, which reduces the internal friction of the valve body and improves the sealing performance of the valve body.
. In order to achieve this purpose, the invention adopts the following technical scheme:
. The invention provides a zero-friction telescopic ball valve, comprising a valve body, the upper surface of the valve body is fixed connected with a controller, the bottom of the controller is provided with a valve core, the bottom of the valve core is provided with a sealing device, the left side of the sealing device is provided with a check device, the right side of the sealing device is provided with a screen, the controller controls the valve core 90 degrees of rotation, Thus to achieve the valve body of water interception and drainage, in this process, the sealing equipment and valve core contact, to ensure that the valve is closed, will not leak, the right side of the filter screen is provided with a sewage pipe, the controller is opened in the wall of the chute, the inner surface of the chute sliding connection limited position screw, the limit screw is arranged outside the clamp rod, The bottom end of the clamping rod is fixed connected with a sealing block, the valve stem rotates, the valve stem slides up and down along the inner surface of the sealing block, the sealing block is controlled by the valve stem, sliding clockwise or counterclockwise along the inner surface of the controller, before use, adjust the limit screw in the inner position of the chute, thereby controlling the sliding range of the clamping rod, the lower surface of the sealing block is fixed connected with a connection ring, The inner surface of the sealing block is connected with a valve stem, the inner surface of the valve stem is connected with a fixed rod, and the outer surface of the fixed rod is connected with a card.
. In the better technical scheme of the invention, the outer surface of the clamp rod is connected with the inner surface of the controller, the valve is closed, and the check device at the same time, the impact force of the return fluid is discharged, reducing the damage of the water hammer effect on the valve, the filter screen intercepts the large particle solid impurities at the inlet end, the impurities are discharged from the sewage pipe, and the water body is preliminically purified. The inner surface of the controller and the outer surface of the sealing block rotation connection, the inner surface of the controller and the outer surface of the valve stem sliding connection, the outer surface of the card strip and the inner surface of the valve stem sliding connection.