CN87211839U - Pneumatic pipe-line valve - Google Patents

Abstract

The utility model relates to a pneumatic pipe pressure pipe valve. The hidden rod type pressure pipe valve is matched with a pneumatic motor, an overload slipping disc, a hand driving assembly and a cover shell. The purpose-made rubber pipe is used as the passage lining of the valve body. When the valve is closed, a spherical body presses the transverse section of the rubber pipe into the concave shape. The valve body does not contact the medium except the rubber pipe. When the valve is opened and closed to the terminal point, such as the motive power does not have time to stop and the overload occurs, the overload slipping disc slips, and the device is prevented from being damaged. The valve is provided with a window for observing the opening and closing members and watching the opening and the closing situations. The used adaptive temperature performance is not below the diaphragm valve and the clamp pipe valve, and the operating pressure is higher than the diaphragm valve. The utility model has the advantages of high reliability, low cost, light weight, good anti-corrosive property, good passing ability, ore pulp portability, and convenient sweeping.

Description

Pneumatic pipe-line valve

The present invention relates to a kind of Valve for compressing tubular liner, particularly pneumatic Valve for compressing tubular liner.

Along with the development of producing, the oil company in various places, city (ancestral petroleum supply station) wishes valve realization remote control, automatic control very much, thereby needs power-actuated valve.But present motivational drive valve, cost is too high, the electric gate valve that latus rectum is 200 millimeters, more than 3000 yuan of price; A piston direct-acting type hydraulic pressure stop valve, also the wanting about 3000 yuan of 200 millimeters of latus rectums.Some ground, city's one-level oil company want to realize valve remote control, automatic control, because of valve valency height, invest 400,000 yuan more than.Cannot take out for the moment many like this money, remote control, automatic control are unattainable.Seepage also appears in these valves easily, and water power department uses, and some problems of seepage are little, and oil sector uses as seepage, just causes fire easily.Control Failure also takes place in electric gate valve sometimes, closes the valve overtravel, and valve body is broken.

Purpose of the present invention is that a kind of pneumatic Valve for compressing tubular liner will be provided, and adapts to medium and serviceability temperature and is not less than pinch valve and membrane valve, and working pressure is then greater than the former (Pg≤16Kgf/Cm ²).Durable non-leakage, safe in utilization, cost is low, and anticorrosion, and passing ability is good, and convenient cleaning also can be used for the material that transfer ore pulp etc. contains solid particle.

Invention is achieved in that " blind rod type Valve for compressing tubular liner " (number of patent application 86210871) based on my patent applied for, valve rod is prolonged, at epimere dress overload slider disc assembly, mating power is the two-way pneumatic motor, also tennis partner's driven unit and case.When opening valve or close valve to terminal point, in time cut off as power source, then slider disc can be skidded under the overload situation, and valve body is unlikely to be broken to protect.When power source has fault, available hand-drive assembly opening/shutting valve.Case is used for protecting and supports each assembly.

Because the present invention adopts the special sebific duct of " Valve for compressing tubular liner " (application number 86210756) of applying for a patent in person to make the valve channel lining, in passage, the sebific duct transverse section is pressed into concave shape to close valve with spherical surface body, sebific duct is flexible, sealing is easy to leak not reliably, and essential specific pressure is little with essential sealing force, and required moment of torsion is also little.The characteristics of the moving motor of institute's distribution are to be applicable to need safety, stepless speed regulation, often change that sense of rotation, starting are frequent and explosion-proof, load starting, the occasion of overload possibility is arranged.As for cost, because be supporting with " blind rod type Valve for compressing tubular liner ", this valve is less than precision prescribed height, sealing surface that difficulty of processing is big; Valve rod is contact medium not, is not subjected to the corrosion of medium and filler, and is not high to the material and the technological requirement of valve rod; Valve body is a T-shaped threeway tubulose, and structural strength is big, and materials are economized, and simple shape is easily made, and also makes things convenient for to be welded into steel plate or steel pipe, and is in light weight; Under complex conditions, adopt pneumatic motor simpler than other similar devices low price, maintenance; Be general parts as for slider disc, manual component and case, less demanding, also uncomplicated.So whole pneumatic Valve for compressing tubular liner will reduce at double than existing electric gate valve and piston direct-acting type hydraulic pressure stop valve cost with latus rectum.The present invention is owing to use sebific duct to make lining, and whole valve body is contact medium not, avoids dielectric corrosion, and this is more much lower than anti-corrosion of metal valve cost again.

The present invention also has passing ability good, frictional resistance little (only being equivalent to straight-through tube).Because of not having medium in the valve body vertical duct, can establish and observe the window that open-shut device opens and closes the position, existing blind rod type valve, because of the whole valve body inner chamber all has the medium of pressure abrim, so difficulty is established viewing window, the open-shut device position be cannot see, and uses very inconvenient.

The concrete structure of invention is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is section of structure of the present invention (a not complete section);

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1.

This structure comprises blind rod type Valve for compressing tubular liner (1), overload slider disc assembly (4), pneumatic motor (5), hand-drive assembly (2) and case (3).

The blind rod type Valve for compressing tubular liner comprises a T-shaped valve body, and valve channel serves as a contrast with sebific duct, and the sebific duct two ends compress sealing when chimb is arranged for adapter; Valve body vertical duct inner chamber is equipped with the sphere depression bar, and the depression bar upper semisection has internal thread and valve rod to cooperate; The feature on valve rod top is overload slider disc assembly (4) to be housed (Fig. 1), is followed successively by packing ring, downslide Moving plate, bevel gear wheel from bottom to top, goes up slider disc, packing ring, pressure spring, packing ring, nut and force jack panel.The center vertical duct of downslide Moving plate is fixed on the valve rod with lateral pin; The square shaft section that the perpendicular interior tube cavity in the center of last slider disc is square hole and valve rod can fluctuate movingly; The center hole of large bevel gear just is enclosed within on the vertical duct external diameter of downslide Moving plate, cooperation; Bevel gear wheel is subjected to bevel pinion on the pneumatic motor output shaft when promoting, be by the slide down Moving plate to the clamping of bevel gear wheel and transmitting torque in valve rod; The size of transmitting torque is regulated the compression degree of spring by nut, is as the criterion to satisfy the moment of torsion needs of closing.

Hand-drive assembly (2) is (Fig. 1) from being followed successively by nut, handwheel, gear shaft (becoming whole with bevel pinion), bearing, slide rail plate (see figure 2), cushion block outside to inside.The gear shaft clutch lever also is equipped with in the top of bearing.This bar is a L shaped axle, and the corner, below is welded with eccentric wheel.The pressure spring cover is being fixed in the bearing below, and spring is housed in the cover.When power source broke down, available hand-drive replaced, and the hand-driven bevel pinion breaks away from bevel gear wheel at ordinary times, was to prop up by the bearing of the spring handle gear shaft below the bearing.In the time of hand-driven, upwards cocked the gears to engage and disengage operating handle of bearing top, the eccentric wheel on the operating handle just bearing toward pressing down, bevel pinion just meshes with bevel gear wheel.When recovering motivational drive, the gears to engage and disengage operating handle of bearing top should turn back horizontal position to counterclockwise direction, eccentric wheel on the bar just separates with bearing, and the spring of bearing below is just up raised bearing, thereby makes bevel pinion and bevel gear wheel separately.The bearing periphery is a rectangular, and there is chute both sides.

Case (3) is a tubbiness, lower hollow, and the uniform bolt hole in border is fixed on together together with valve gap on the chimb of valve body vertical duct.The case top is opened wide, and is covering bung.The both sides of case respectively are welded with an angle bar (see figure 1), a packaged pneumatic motor wherein, another packaged hand-drive assembly.The Placement of dress angle bar of motor and motor or use internal thread, or use bolt, or add angle bar again on angle bar determines according to the Placement of motor.The angle bar of dress hand-drive assembly, having can be by the hole of bevel pinion, the vertical riveting in the outside, both sides in hole has two cushion blocks, with screw the slide rail plate is installed on the cushion block, slide rail plate shape such as doorframe, insert respectively in the chute of bearing both sides both sides in the frame, and movingly, bearing can slide up and down at slide rail plate inside casing.The angle bar below aligns the bearing hole place, is welded with a little block plate, is used for supporting little spring and presses to bearing.The top of bearing, the axis hole direct puncture that has the cogged clutch lever on the slide rail plate is crossed the angle bar on the case.

Claims (3)

1, pneumatic Valve for compressing tubular liner is characterized in that adorning a pneumatic motor on the blind rod type Valve for compressing tubular liner, the axle head dress bevel pinion of motor output shaft; Bevel pinion engagement on valve rod top dress bevel gear wheel and the motor output shaft.The bevel gear wheel upper and lower has the slide down Moving plate, and the vertical duct of lower slider disk center is fixed with lateral pin and valve rod.Last slider disc center vertical duct endoporus is square, entangles the square shaft section of valve rod, movingly.The bevel gear wheel center hole is to be enclosed within on the downslide Moving plate vertical duct, movingly.There is pressure spring the top of last slider disc, and packing ring and two nuts of regulating pressure are arranged on the spring.

2, pneumatic Valve for compressing tubular liner according to claim 1, it is characterized in that on the blind rod type Valve for compressing tubular liner, also being equipped with the hand-drive assembly, certainly outside to inside set screw nut, handwheel, small coning gear shaft, bearing and gears to engage and disengage operating handle, bearing periphery being arranged successively in the assembly is rectangular, and there is chute both sides.The below of bearing is the sleeve pipe of dressing pressure spring fixedly.The gears to engage and disengage operating handle is a L shaped axle, and the corner, below is welded with eccentric wheel.The shaft part of L shaped axle is contained in the slide rail plate hole of bearing top, and passes the angle bar of case.

3, according to the pneumatic Valve for compressing tubular liner of claim 1～2, case is housed on the valve gap, lower hollow, the plane has a circle bolt hole uniform, together is fixed on together with valve gap on the flange of valve body vertical duct, and the case top is opened wide, and has housing to live.The both sides of cover respectively are welded with an angle bar by the below, wherein a packaged pneumatic motor; Another packaged hand-drive assembly, having on it can be by the hole of bevel pinion; The vertical riveting in the outside, both sides in hole has two cushion blocks, by screw the slide rail plate is installed on the cushion block, slide rail plate shape such as doorframe, and there is an axis hole that the gear clutch lever is installed the center of frame, and direct puncture is crossed the angle bar of case; Insert respectively in the chute of bevel pinion bearing both sides, movingly the vertical inboard of frame.The angle bar below aligns the steel plate that the bearing hole place is welded with a support spring.

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