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Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve

A technology of pneumatic pistons and actuators, which is applied in the direction of valve operation/release devices, valve devices, engine components, etc., and can solve the problems of poor control accuracy of quarter-stroke regulating valves, larger volumes of actuators, and large accumulated errors. Achieve the effect of improving precision, compact structure and convenient operation

Active Publication Date: 2015-04-29
SHANGHAI DACHENG INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of a manual operating mechanism and a valve position indicating device, not only the volume of the actuator becomes larger, the operation is inconvenient, the total price is expensive, and the appearance is not beautiful, but also because the manual operating mechanism and the valve position indicating device are connected to the pneumatic piston actuator. In this case, more connecting parts are required, and the accumulated error is larger, resulting in poor control accuracy of the quarter-stroke control valve.

Method used

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  • Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve
  • Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve
  • Transverse-mounting type pneumatic piston executing mechanism of angular travel adjusting valve

Examples

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Effect test

Embodiment 1

[0074] Such as figure 1 and figure 2 As shown, the horizontal-mounted pneumatic piston actuator of the angular stroke regulating valve in this embodiment includes: a box body 100, a first cylinder 200, a second cylinder 300, a piston rod 400, a shift fork 500, and two slider bodies 610, slider pin 620 and clutch type manual operating mechanism 800;

[0075] The first cylinder 200 is connected to the second cylinder 300 through the box 100; the inside of the first cylinder 200 and the second cylinder 300 are respectively provided with a first piston body 210 and a second piston body 310;

[0076] Piston rod 400, the two ends of the piston rod 400 penetrate into the inside of the first cylinder 200 and the second cylinder 300 respectively, the two ends of the piston rod 400 are respectively connected with the first piston body 210 and the second piston body 310, the piston rod 400 A slider pin connecting hole 410 is provided on the top, and the central axis of the slider pin ...

Embodiment 2

[0092] Such as image 3 and Figure 4As shown, the difference between this embodiment and the embodiment is that when the horizontal-mounted pneumatic piston actuator of the quarter-stroke regulating valve adopts a single-acting structure, the first cylinder 200 also includes a first Spring member 250, the first spring member 250 is between the first guide cover 230 and the first end cover 240, the first spring member 250 is set on the piston rod 400, the first spring member 250 is connected with the first guide cover 230; The second cylinder 300 further includes a second spring component 350 disposed inside the second cylinder body 320 , and the second spring component 350 is located between the second piston body 310 and the second end cover 340 .

[0093] When the pneumatic piston actuator of the angular stroke control valve adopts a single-acting structure, when the piston rod 400 needs to move to the right, the air pressure is input into the first operating air source in...

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Abstract

The invention relates to the technical field of adjusting valves, and provides a transverse-mounting type pneumatic piston executing mechanism of an angular travel adjusting valve. The transverse-mounting type pneumatic piston executing mechanism comprises a box body, wherein a first air cylinder is connected with a second air cylinder through the box body, the two ends of a piston rod respectively penetrate into the first air cylinder and the second air cylinder, and are connected with a first piston body and a second piston body, a first fork part and a second fork part which are arranged opposite to each other are arranged at one end of a shift fork body, the other end of the shift fork body is connected with a rotary shaft, the piston rod is positioned between the first fork part and the second fork part, two slide block bodies are respectively embedded into the corresponding fork openings, a slide block pin penetrates through a block spin connecting hole and a slide block pin connecting hole to connect the slide block bodies and the piston rod, and a clutch manual operation mechanism comprises a worm gear, an eccentric sleeve, a worm, a worm shaft and a hand wheel. The transverse-mounting type pneumatic piston executing mechanism has the advantages that the operation can be switched to the manual operation when the automatic control of the executing mechanism fails, and the operation is switched to the automatic control after the failure is eliminated; the opening degree position of the adjusting valve can be monitored, and the accuracy is high.

Description

technical field [0001] The invention relates to the technical field of regulating valves, in particular to a horizontal-mounted pneumatic piston actuator for a quarter-stroke regulating valve. Background technique [0002] Pneumatic angular stroke regulating valves, such as O-type ball valves, V-type ball valves, butterfly valves, eccentric valves, and check valves, are widely used in the automatic control of industrial processes such as chemical industry, petroleum, natural gas, metallurgy, power stations, food, and papermaking. Wide, large amount of use. At present, if the quarter-stroke pneumatic piston actuator equipped with the pneumatic quarter-turn control valve needs to have manual operation function, it must be equipped with a manual operation mechanism product. When the user observes the control position of the control valve, it must also be equipped with a valve position indicating device. Due to the addition of a manual operating mechanism and a valve position i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/143F16K37/00
CPCF16K31/143F16K37/0016
Inventor 赵汉章
Owner SHANGHAI DACHENG INSTR
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