Introduction of various control valves

Components used to control fluid pressure, flow and direction in hydraulic drives. Control pressure which is called the pressure control valve, the control flow called flow control valve, control the flow, the flow and the direction is called the directional control valve. Directional control valve is divided into use by one-way valve and the valve. ① check valve: only allow one-way fluid in the pipeline connected, the reverse that cut off. ② reversing valve: to change the different lines between the pass, off relations, according to the spool in the valve body working position number points two, three, etc .; according to the number of channels controlled by two, three, four , Five links, etc .; according to the spool drive sub-manual, motorized, electric, hydraulic and so on. The flow control valve regulates the flow by adjusting the orifice area between the valve core and the valve body and the local resistance it creates to control the speed of movement of the actuator. Flow control valve is divided into 5 uses. ① throttle: adjust the throttle area, can make little change in load pressure and less demanding uniformity of motion of the implementing element's speed of movement remained basically stable. ② governor valve: When the load pressure changes to maintain the throttle valve inlet and outlet differential pressure for the set value. In this way, after adjusting the orifice area, the speed control valve can keep the flow through the throttle valve unchanged, so that the movement speed of the actuator is stable. ③ diverter valve: Regardless of the load size, the same oil source of the two actuators can be equal for equal flow diverter valve or synchronous valve; proportional flow to get the proportion of diverter valve. ④ collector valve: the role of the bypass valve and the opposite, so that the flow into the collection valve in proportion to the distribution. ⑤ shunt manifold valve: both divert valve and current collector valve two functions. Pressure control valve according to the purpose is divided into relief valve, pressure relief valve and sequence valve. ① relief valve: to control the hydraulic system to achieve a constant pressure regulator. The relief valve used for overload protection is called safety valve. When the system fails, the pressure rises to a limit value that may cause damage, the valve will open and overflow to ensure the safety of the system. ② pressure reducing valve: to control the branch circuit to get lower than the main circuit oil pressure stable. Pressure relief valve according to its control of different pressure functions, and can be divided into fixed value pressure relief valve (output pressure is constant value), fixed pressure relief valve (input and output pressure differential for the fixed value) and the proportional pressure relief valve (Input and output pressure to maintain a certain ratio). ③ Sequence valve: can make an actuator (such as hydraulic cylinder, hydraulic motor, etc.) action, and then in order to make the other actuator action. In the late 1960s, electro-hydraulic proportional control valves were developed on the basis of several types of hydraulic control valves. Its output (pressure, flow) can vary continuously with the incoming electrical signal. Electro-hydraulic proportional control valve according to different roles, correspondingly divided into electro-hydraulic proportional pressure control valve, electro-hydraulic proportional flow control valve and electro-hydraulic proportional directional control valve.

Stainless Steel Sliding Door

Characteristics and Advantages

(1) Intelligent control design: adjustable main parameter and secondary parameter automatically according to the weight of door leaves;

(2) Low noise: Special static sound track, integration of motor, worm-gear and retarder.

(3) Anti-clamping function: automatically reverse when meeting barriers;

(4) Unique electronic motor lock: the motor will lock up when the door is forced to open.(controlled by remote or switch)

(5) Tighten force: seal door when closed, power consumption approximately 10W under standby;

(6) Advanced brushless motor(36V,100W) can automatically adopt different heavy door leaves;

(7) Bi-doors inter-locking: one of the door leaves always remains closing;

(8)Safety sensor terminal: sensor stops working when door closed;

(9)Unique coating technology: never rusty;

(10)Easy and convenient to install;

(11)Working Process: when the door leaf closes to the right place, the door leaf will slightly shift to the door frame and the ground. The rubbers on the four sides of the door leaf will completely combine with door frame and ground, which ensures air tightness. When the door is open, the rubbers will separate from door frame and ground, which avoids contraction on the ground.

Technical Specification

Specification	Light Duty		Heavy Duty
Rang of the Door	Single-Leaf	Double-Leaf	Single-Leaf	Double-Leaf
Door leaf max weight	100kg	100kg x 2	200kg	200kg x 2
Mounting Method	Surface mounting or built-in mounting
Open Width	700-2000mm	650-2000mm	750-2000mm	650-2000mm
Power Supply	AC 220v ± 10%, 50-60 Hz
Opening Speed	300-500mm/s (adjustable)
Closing Speed	250-550mm/s (adjustable)
Creep speed	30-100mm/s (adjustable)
Hold-open time	0.5-20s (adjustable)
Airproof Force (Max.)	>70N
Manual Pushing Force	<100N
Electronic Lock Force	>800N
Power consumption	150W
Ambient temperature	-20+50 C

Technical Details:

(1) Rubber lining sealing technology combined with V groove on the guide rail enables the door completely sealed when the door closed;

(2)Special door body location technology. Semicircular surface beam on the ground matches with the V style groove at the bottom of door leaf, which stop the door from swing and make sure it moves stable and smooth;

(3) The door body decorated with matte stainless steel or spray surface, and on the middle and both sides with sealing stripes to ensure the hermetic effect.

(4)Feet sensor switch applied to avoid contagion;

Stainless Steel Sliding Door,Stainless Steel Bypass Sliding Door,Stainless Steel Interior Sliding Door,Stainless Steel Folding Sliding Door

Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffastdoor.com