★ liquid flow rate automatic balancing control valve (Bulletin No .: CN2883835) The liquid flow rate automatic balancing control valve includes a control valve jacket, the improvement is that it also has a regulating valve housing connected to the regulating valve body, the valve body inside the regulator A regulating valve spool, regulating valve sleeve is equipped with a pressure spring. The valve is designed with an automatic balancing flow device that automatically balances the flow according to the interaction of the liquid with the regulating valve without manual adjustment. Regulating valve core front and rear ends are designed to adjust the guide column, the adjustment process is fast, accurate and reliable, the system can be more balanced flow distribution of the pipeline to avoid excessive flow of some of the pipe and lead to other pipe flow reduction, Thus improving the efficiency of the entire system. The valve structure is simple, easy to manufacture, more easily applied to a variety of high-rise building water supply system, ground source heat pump system, central air conditioning system, heating system. ★ Soot exhaust pipe fire automatic cut-off valve (Announcement No .: cn2883836) The soot exhaust pipe fire automatic cut-off valve aims to solve the current oil soot exhaust pipe grease can not be automatically extinguished in time to cause fire problems. The valve comprises a connecting flange, a valve seat and a valve body. The valve body is provided with a valve which is provided with a closing spring and an automatic closing control component. Once the fume exhaust duct fires, the valve can act immediately to cut off the air flow in the fume exhaust duct so that the ignition point is extinguished automatically without replenishment of new air. The valve is easy to manufacture, low cost, reliable operation, suitable for newly installed or modified soot exhaust pipe. ★ valve opening and closing state display device (Bulletin No: cn2883843) The valve digital display device, which in turn mounted on the dial seat stem, the media wheel, dial, the display attached to the dial dial, Friction sleeve, the stem is processed with straight knurled knurled, mounted on the stem of the dial seat through the 3 sets of uniform wheel and dial mediator connected to form a friction transmission system, the dial seat on a small window , Rotating the valve stem to change the valve opening and closing state, through the small window you can see the display disk shows the valve opening and closing figures, the device is friction drive, there is no engagement dead zone, will not be due to over, or not In place of the transmission error, improve the adjustment sensitivity and display accuracy. ★ control valve (notice number: cn2890518) The control valve, which has a sleeve body, the top seat and the control valve body, the control valve body is set in the sleeve flow hole and the top of the water hole between the control valve Can be set at the outlet of the water pipe, when the control valve group is pushed up from below, the control valve group closes the flow hole of the cover body and the water hole of the top seat sequentially from top to bottom, so the water flow does not flow out from the water outlet end , On the contrary, when the control valve group is pushed and moved from top to bottom, the flow hole of the cover body and the water hole of the top seat will be opened, so that the water flow can flow out from the water end to reduce the time when the water flow stops Produced positive and negative pressure waves, thereby avoiding the vibration of the dry pipe and produce jarring noise. ★ constant pressure type high temperature slag discharge valve (announcement number: cn2890522) The constant pressure high temperature slag discharge valve, the valve body inlet part is set to seal the seal ring, the corresponding set disc-shaped spool, solid in the valve The rear end of the valve stem on the core is a screw rod, and is characterized in that an elastic valve core is arranged, a nut which is matched with the screw thread of the screw rod is arranged as an axially movable component, and the nut is arranged on the tail end surface of the nut to form a fixed sealing An axially positive pressure spring on one side of the ring. The utility model automatically adjusts the gap formed between the sealing surfaces due to different degrees of expansion during use, so as to realize the constant pressure between the sealing surfaces without man-made operation, and on the one hand, the degree of sealing is improved and leakage is not caused; on the other hand, the utility model is simplified Operation, reduce labor intensity. ★ a unloading gray bell valve (announcement number: cn2890523) The unloading gray bell valve, including valve cover, valve body, bell body, ring, swing arm, valve seat, valve cover bolted to the body, the swing arm Connecting the bell body and the valve body, the sealing ring is mounted on the bell body through the pressure plate, the diameter of the valve cover channel gradually decreases from both ends to the middle, and is x-shaped, and the valve seat is under the minimum diameter of the valve cover. The utility model has the beneficial effects that the sealing ring is convenient for maintenance and replacement, the cone-shaped diversion structure is adopted, the erosion of the sealing surface by the medium is avoided, and the service life is long. ★ A pneumatic hard sealing butterfly valve (announcement number: cn2890524) The pneumatic hard sealing butterfly valve, including the valve body, disc, seal ring, pressure ring, valve shaft, butterfly valve plate installed in the body through the valve body A piston rod with a cylinder and a cylinder passes through the valve body. When the butterfly valve is in the off position, the piston rod just reaches the back of the butterfly plate in the extended position; the cylinder is composed of a cylinder, a piston, a piston rod and a spring, Mounted on the back of the piston, there is an air inlet near the valve body on the cylinder body, an o-ring is also arranged between the piston rod and the valve body. The utility model has the beneficial effects that the air cylinder is not pressurized until the valve is closed and the sealing is reliable. ★ Metal o-ring sealed butterfly valve (Announcement No .: cn2890525) The metal o-ring sealed butterfly valve, including the valve body, disc, valve seat, metal o-ring, pressure ring, metal o-ring mounted by pressure ring Disc, the metal o-ring and the valve seat to form a seal vice, disc and metal o-ring contact surface is flat, pressing ring and the metal o-ring contact surface is plane, disc and metal o-ring contact The vertical surface is equipped with adjusting washers. The disc has a guide angle of 5 to 10 degrees on the horizontal surface that contacts the metal o-ring. The utility model has the beneficial effects that the processing is simple, the symmetrical equilibrium of the metal o-ring is force-balanced and the interference is adjustable and the installation is convenient. ★ limit telescopic butterfly valve (announcement number: cn2890526) telescopic butterfly valve limit, there is a valve body, valve body installed on the valve stem and the lower stem, the valve stem connected to the lower stem, between the valve plate and the body A sealing valve seat, a telescopic pipe is connected on one side of the valve body, a telescopic flange is arranged on the outer end of the telescopic pipe, a gland and a sealing ring are arranged outside the telescopic pipe, the gland is connected with the auxiliary flange of the valve body by a fastener, Is in the telescopic tube gland, valve flange, telescopic flange or telescopic tube flange connection limit screw, limit screw one end of the mounting nut. In the technical scheme, the valve body and the telescopic pipe are connected by a screw and a nut (multiple screws), and the telescopic range l or h is left under normal use. However, if there are thermal expansion and contraction and various stresses due to temperature difference and the like Of the changes so that the telescopic tube in the scope of the maximum expansion will not be due to axial displacement changes continue to increase the telescopic tube from the valve sealing surface, resulting in valve failure. ★ wedge gate valve with relief valve (announcement number: cn2890527) The wedge gate valve with relief valve inside, including valve body, valve seat, gate, valve stem, valve cover, bracket, transmission mechanism, seal And mounting parts, respectively, the lower end of the valve stem and the gate are respectively manufactured with the mutual sealing surface, forming a relief valve device, the valve opens, the first valve lift to open the relief valve to reduce the import and export of the gate two Side pressure difference, and then lift the gate, with a small opening torque, sealing surface wear less, good sealing performance, and the simple structure, low cost and so on. For high pressure medium pipe use. ★ self-sealing double flat gate valve (Bulletin No .: cn2890528) The self-sealing double flat gate valve, including the valve body, valve cover, located above the valve cover is provided with an operating screw and operating hand wheel, the valve body is provided with the operating screw linkage The gate body is provided with a sealing face matched with the shutter in the shutter mechanism, the shutter mechanism comprises two shutters separated from each other and a central push rod, the two shutters are arranged oppositely, and the outer sealing faces of the shutters each other In parallel, a plurality of compression springs are uniformly distributed on the side surfaces of the two shutters. The center push rod is buckled between the two shutters by the lower end of the center push rod and the clamping groove arranged on the back side of the two shutters. , The upper end of the center push rod is connected with the operating screw rod through the connecting head thereof, driven by the operating screw rod, the central push rod can drive the two shutters to move up and down along the sealing surface on the valve body through the lower end head thereof, The sealing surface on the outer side of the plate always presses on the sealing surface of the valve body to ensure good sealing effect and prolong the service life. ★ A multi-purpose two-way air bag valve (Announcement No .: cn2890530) The multi-purpose two-way air bag valve, including the bladder, lower body, left screw, the valve body, the gate, right screw, The upper and lower valve bodies are fixedly connected by bolts, the bladder is arranged on the upper valve body and the lower valve body, the upper and the lower gate plates are arranged outside the upper and lower valve bodies and the upper and the lower sides of the bladder through the left and right screws, The upper end are provided with a gear, gear through the tooth