scotch yoke hydraulic pump in stock

In real life scenarios with critical service valves, there are situations such as the loss of air or loss of power where a valve must be forced into a position other than its current position. In those critical times, the right accessories on an actuator will allow an operator to move a valve from closed to open or open to closed, regardless of the position it was designed to “fail” to. Max Air’s HD line of scotch yoke actuators offers this capability. Shown here is our hydraulic manual override system. A self-contained hydraulic reservoir and hand pump are utilized to power an auxiliary hydraulic cylinder and drive the actuator to the required position. The Double Acting actuator will stroke the valve, manually, either clockwise or counter clockwise as required. The Spring Return unit compresses the spring and drives the actuator to the opposite of it’s fail position. i.e. Opens a valve with a fail closed actuator or closes a valve with a fail open configuration.

The aim of the paper is to design and develop a water pumping system using scotch yoke mechanism. The reciprocating motion of the plunger is utilized for the pumping action. The plunger is reciprocated with the help of a cam plate. By this action the water is pumped with very high pressure and to various heads. This can be utilized for various applications like lubrication in machines and water pumping in agriculture field. The cam plate gets the drive from the motor for its rotation and converts that rotary motion to useful dual side reciprocating motion. The motor is powered with the aid of electric power. Thus the water is pumped from source to various heads.

Every one of us will need of some kind of water source for drinking, bathing, washing clothes, preparing food and for irrigation. We may get the water from various sources like, lake, river, ponds, open well, bore well. So we have to pump the water from the source and use the water for the various purposes. Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work by moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power which usually come in many sizes that vary from microscopic for use in medical applications to large industrial pumps.

Generally, these mechanical pumps have numerous applications such as pumping water from wells, filtering of dust in the aquarium, filtering the ponds and aeration, also used in car industry for water-cooling and fuel injection, and finally in the energy industry for pumping oil and natural gas or for operating cooling towers. This Scotch yoke mechanism could be used for conversion between rotational motion and linear reciprocating motion. In general, this linear motion can take place in various forms depending on the shape of the slot, but mostly the basic yoke with a constant rotation speed produces a linear motion that is simple harmonic in nature.

The experimental setup consists of water pump whose pumping shaft is connected to the yoke plate of the scotch yoke mechanism the rotating disk consists of the yoke supporting pin is inserted into the yoke plate for controlling the translation motion.

The rotation of the plate is carried out with the help of motor. When the motor is turned on then it rotates the plate attached with it and this rotation is converted into translation by means of yoke plate, this translation motion activates the piston of the pump to take to and fro motion, the water is sucked and transmitted to the required designation.

An actuator helps to generate physical movements by converting energy, often electrical, air, or hydraulic, into mechanical power. The following are the usual power sources that are part of the actuator"s functionality:

Manual actuators provide a mechanical advantage to users, multiplying their effort utilizing screws, gears, or hydraulic hand pumps. The use of handwheels, chain wheels, or levers can control Manual actuators.

Hydraulic actuators use hydraulic energy to operate the valve. Depending on the configuration, the hydraulic fluid may open and close the valve or open the valve. A coil spring is typically fitted inside the actuator to return it (and the valve) to the closed position.

Gas over oil actuators uses pneumatic pressure (from a pipeline, for example) to create hydraulic pressure in attached oil tanks. The oil barrier between the actuator components and any contaminants found in the gas is essential for reliable actuator performance.

The ATI Quarter-Turn Hi-Pressure Direct Gas valve actuator is designed to operate using direct pipeline gas with pressures up to 1500 psi, providing torque outputs over 1 million inch-pounds. The unique design utilizes the best features of the traditional gas-over-oil actuator while solving some of the problem areas associated with traditional designs. The design is based on separate gas and hydraulic cylinders to provide a simple, reliable, low-maintenance actuation for pipeline valves.

The ATI Quarter-Turn Gas-Over-Oil valve actuator is designed to operate using direct pipeline gas with pressures up to 1500 psi, providing torque outputs over 1 million inch-pounds. The design utilizes a proven canted scotch yoke actuator with dual oil tanks. With the cylinder always immersed in oil, the Gas-Over-Oil actuator provides maintenance free, long cycle-life actuation. The control modules can be used with the actuator to implement various valve control strategies.

ATI H & HDH series are piston operated valve actuators that use hydraulic pressure or high-pressure gas to provide the force required to open, close and control rising stem valves

The ATI Local Auto-Manual Control module is based on proven, hi-pressure pilot-type poppet technology. ATI has utilized this technology for many years in our Dual 3-way Poppet Control Valve to provide the selective directional control of the power media for any Direct Gas, Gas-Over-Oil, or Hydraulic valve actuator. The local Auto-Manual function is integrated with the poppet valve assembly utilizing a commercially available 3-way stainless steel ball valve with a stainless steel lockable handle, eliminating large levers.

The sure action control of the Poppet Valve is achieved utilizing a pilot pressure on a piston to pop the nylon seals into the seat. This provides quick response and zero-leak control of the power gas directly to the actuator or to the hydraulic tanks. The poppet design allows for a full 3/8” flow port, providing high flow rates while handling contamination, and preventing atmospheric contaminants.

The ATI Hydraulic Hand Pump provides an efficient back-up system for opening and closing valves when power gas for pneumatic actuators or power hydraulic fluid for hydraulic actuators is not available. Utilizing a balanced piston design eliminates the possibility of cavitation or creating a vacuum because the pressure on either side of the piston is always equal and both cavities are always full of oil. The high flow capacity provides easy and efficient manual opening and closing of even the largest valves.

Typically hand pumps on pneumatic actuators will have a self-contained reservoir while hand pumps on hydraulic actuators will share the same reservoir as the power unit.

The Hydraulic Hand Pump includes an automatic reset function on the open/close selectors to prevent inadvertent movement of the pump handle when power gas or power hydraulic fluid is re-introduced. This feature automatically resets the pump to the neutral position when gas pressure or hydraulic pressure is detected.

A pressure relief button is provided to relieve any internal pressure after pumping is complete. This allows the pump ram to be retracted into the pump, out of any hostile atmosphere.