Angle control valve production technology applications

In the process of automatic adjustment of production process, the control valve is an important and indispensable part, which is called the "hands and feet" of the production process automation and is one of the terminal control elements of the automatic control system. It is composed of two parts of the implementing agencies and the valve. From the hydraulic point of view, the control valve is a local resistance can vary the throttle element, the control valve is in accordance with the input signal by changing the stroke to change the drag coefficient, so as to achieve the purpose of regulating the flow. Angle control valve flow path is simple, small resistance, under normal circumstances apply to the positive use (installation). However, it is recommended that the angle control valve be used reversely at high pressure drop to improve the unbalanced force and reduce the damage to the valve core. At the same time, it is also beneficial to the flow of the medium and avoids the coking and clogging of the control valve. Angle valve in the reverse use, in particular, should be avoided for a long time a small opening to open the case, to prevent strong oscillations caused damage to the spool. Especially in the trial production stage of chemical plant, due to the low load at trial production, the design process conditions can not meet the requirements very quickly. The reverse angle valve should be avoided as long as possible to prevent the opening of small opening, Angle control valve is damaged. Angle control valve reverse use analysis At present, in addition to the butterfly valve and diaphragm valve is completely symmetrical in structure, all other structure of the control valve are asymmetric. When the regulating valve changes the flow direction, the value changes due to the change of the flow path. The normal flow of all types of control valves are to open the spool in the direction (forward use), the manufacturer also provides the ability to flow when the normal flow) value and flow characteristics. When the control valve is used in the reverse direction, the flow capacity of the control valve will increase when the fluid flows in the direction of closing the valve spool. Water linkage test, the simulation process conditions can not be quickly reached the normal state, the control valve in a long time at a small opening state use, due to the role of unbalanced force, there will be serious instability. Therefore, the control valve will produce a strong shock and harsh noise, resulting in the valve core quickly broken. In the normal process conditions, the opening of the control valve is moderate, even if the small opening is also short, so the control valve can be used normally and safely. Angle control valve is used in reverse, the reverse In general, the angle control valve are used to install the forward, that is, into the side. Only in the case of high pressure and high viscosity, easy to coke, containing suspended particulate matter case, it is recommended reverse installation, the material side into the bottom. The purpose of the reverse angle control valve is to improve unbalance force and reduce the wear on the valve core, but also conducive to high viscosity, coking and suspended particulate matter containing the flow, to avoid coking and plugging. Under normal circumstances, the angle control valve are not recommended for reverse use, only in the high pressure, high viscosity, easy to coke and suspended media containing particles is recommended reverse use. Reverse use, should avoid long-term small opening operation, especially in the test should pay more attention.

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.hfrollershutterdoor.com