Customized pneumatic actuator with bevel gear
Single acting pneumatic actuator Single acting normally open and normally closed German VATTEN
1. The cylinder block and its internal surface are finely ground and finely machined. Advanced anti-corrosion technology is used inside and outside. The cylinder has small friction coefficient, long service life and strong corrosion resistance.
2. Double piston gear rack design, compact structure, symmetrical installation position, convenient output, long service life and fast action.
3. The composite boom and guide ring are installed on the back of the piston rack, with accurate action, small friction coefficient and long service life.
4. The combined preloaded coated spring has a long working life.
5. Gear and rack have small mesh clearance, high accuracy and large output power.
6. Rust free steel fasteners are safe and beautiful with strong corrosion resistance.
7. International standard size: output slot and screw hole; Size of top mounting hole and NAMUR standard; The size of air supply interface shall conform to NAMUR standard; Bottom safety
The size of mounting hole conforms to ISO5211 standard, which is convenient for installing solenoid valve limit switch and other accessories.
8. Rack and pinion pneumatic actuator. The products are used in various fields and are high-quality driving devices such as ball valves and butterfly valves. Product complies with
NAMUR, ISO5211 standards, the company and its products have passed ISO9001: 2000 and CE certification.
The cylinder is simple in principle and structure, and easy to install and maintain. The cylinder can work normally under high temperature and low temperature, with dust-proof and waterproof capabilities, and can adapt to various evils
Pneumatic actuator model selection:
When selecting a single air control actuator, according to the above calculated torque value and air supply pressure, find the end point torque (the torque is greater than the above calculated torque) SR model in the spring return column. For example, the air supply pressure is 0. 4Mpa, the above calculation requires to control a torque of 1655N. M valve, first find the similar torque 171N at the end point of spring return according to the table m. Then check to the left that the actuator model is SR160 (10 sets of springs are installed in total). Note: In the single pneumatic control output torque table of SR, the spring return "end point" torque is the torque to close the valve, and the spring return "start" torque is the torque to open the valve. The starting torque of the corresponding air supply pressure is the torque when the valve is closed, and the ending torque of the air supply pressure is the torque when the valve is opened.
13 different cylinder models
Gear rack structure
Integrated design, double acting/spring return type common cylinder end cap
Namur interface, convenient for solenoid valve installation
Cylinder block ISO5211 standard, convenient for valve installation
Hard anodized cylinder body, plastic sprayed end cap, stainless steel fastener, safe and corrosion resistant
Double stroke adjustment,+/- 4 ° adjustment at switch position
All sliding parts adopt plastic bearing bushes to keep small friction and effectively reduce wear
Origin pressure: 2.5Bar ～ 8Bar
Standard temperature: - 20 ℃~+80 ℃
Low temperature application: - 40 ℃+80 ℃ (HNBR)
High temperature application: - 20 ℃~+150 ℃ (Viton)
Grease is required for high and low temperatures
Operating medium: dry or lubricated air
Stroke adjustment: the standard structure rotates at 90 ℃, with an adjustment range of+/- 4 ° at both ends
Lubrication: the parts have been treated before delivery, and no additional lubrication is required during operation
Structural features of pneumatic actuator:
1) Extruded aluminum alloy cylinder body, after hard oxidation treatment, has a hard surface and strong performance.
2) , double piston gear, rack structure, stable meshing and transmission, symmetrical installation position, constant output torque.
3) Install the piston, rack and guide ring F of the moving part of the output boom to achieve low friction, long life and avoid metal to metal contact.
4) The cylinder block, end cover, output boom, spring, fastener, etc. are all subject to anti-corrosion treatment.
5) The spring of single pneumatic actuator is installed after pre pressing, which can be safely and conveniently disassembled and assembled.
6) The pneumatic actuator can perform two-way travel adjustment of 0 °, 90 ° plus or minus 5 ° in the fully open and fully closed positions.
7) The installation and connection dimensions shall comply with ISO5211, DIN3337, VD1/VDE3845 and NUMAR standards to ensure AT160
Interchangeability between pneumatic actuators and convenient installation of solenoid valves, limit switches and other accessories.
8) , mounting connection hole, key hole and flat hole for output boom)
9) The appearance is beautiful and exquisite, with weight of wheel and waterproof sealing structure.
10) , normal temperature type, high temperature type, low temperature type. Nitrile butadiene rubber is used for normal temperature work, and fluororubber silicone rubber is used for high temperature ring and low temperature ring
For reference only, please provide specific parameters when ordering:
1: Valve type (ball valve, butterfly valve)
2: Valve sealing type (soft seal, 204 hard seal)
3、 The ball valve is a several way ball valve (two-way, L-type three-way, T-way, four-way ball valve)
4: Core shape of ball valve (V type, O type)
5: Medium pressure
6: Whether it is equipped with accessories (solenoid valve, air filter, and annunciator).
1. When the pneumatic piston actuator is double acting:
The air source signal pressure output by the double acting positioner is respectively input to the pistons of the left and right air chambers. Due to the different air supply pressures of the left and right air chambers of the input piston, the shapes are different
The differential pressure promotes the piston to move in a straight line. The linear motion of the piston is converted into the main rotary motion of the actuator through gear and rack transmission until the left and right air chambers
The pressure is balanced and the movement stops. While the actuator rotates, it drives the valve stem and valve core to rotate, so as to change the circulating area between the valve core and the valve seat and realize adjustment
Of the program.
2. When the pneumatic piston actuator is single acting:
The gas signal pressure output by the single acting positioner is input to the air chamber at the side of the actuator without spring, and the gas signal pressure between the thrust formed on the piston and the spring force
Under the action of the difference value, the cylinder piston moves in a straight line through the gear and rack. The movement stops until the thrust formed by the gas signal pressure is unbalanced with the spring force. On
While rotating, the mechanism mainly bombards the valve stem, and the valve core rotates, thus changing the circulating area between the valve core and the valve seat, so as to achieve the purpose of adjustment.
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