CN2231994Y - Anti-close single direction linkage folding angle stopper door - Google Patents

Abstract

The utility model relates to a switch valve which is especially suitable for a train air-pressure braking device. The utility model comprises a ball valve which is composed of a valve body 3, a main pipe joint 1, a sphere-shaped valve core 9, a hose joint 11, a valve rod 2, an adjusting handle, etc. The internal diameter of a main sealing ring 15 of the utility model is longer than the external diameter of an auxiliary sealing ring 12. Both sides of the sphere-shaped valve core 9 are provided with air leakage grooves 10 through which air can be deflated by the auxiliary sealing ring from an air outlet 14 on the valve body when the valve is closed. The valve rod 2 is connected to the adjusting handle 8 by a ratchet mechanism. The valve body 3 is provided with a front stop block and a back stop block. A poke wheel disc 4 on the ratchet mechanism or the front stop block or the back stop block is provided with spring pins 17. The valve has the advantages of simple structure and reliable anti-close performance.

Description

Anti-shutting one way linking door

The utility model relates to the controlled valve that uses in a kind of pneumatic transmission pipeline, particularly is applicable to the controlled valve in the train air brake equipment.

In railway transportation, braking is well-known to the vital function of guaranteeing traffic safety.The China railways train braking all is an air brake equipment, and brake gas is to rely on the pneumatic circuit of installing ON TRAINS to connect.Angle cock is one of vitals on the car brakeing main line, and it is installed in the two ends of vehicle main brake pipe, in order to open or interdict be responsible for and flexible pipe between vent passage.In case train coupling cock is closed by improper, the driver just loses the control ability to train braking, and it is of common occurrence to cause visitor, lorry to bump against, put the grave accident of raising, overturning thus, and lesson written in blood is attracted attention for national.Cause the improper reason of closing of train coupling cock to mainly contain: the caring for of paulin and rope, student, peasant, wandering personnel, the owner of cargo that escorts goods on a train, truck, etc. play with sabotaging of only a few offender etc. to angle cock.Cause the improper external factor of having closed of angle cock, the reason of angle cock itself is equally also arranged.Therefore to the improvement of angle cock, the key research projects of railway security have been become.For this reason, many scientific and technical personnel improve traditional angle cock, and its improvement project is mainly by following several types: 1, self-locking enclosed angle cock comprises that pull bar prevents pass, locking formula, level pressure self-locking, installs self-locking device, duplex self-locking etc. additional; 2, angle cock is closed the automatic train stop warning device.3, the punching formula angle cock that leaks informaton; 4, train tail wind pressure anti-lock device.For the self-locking enclosed angle cock after the present improvement, have plenty of with air pressure interlocking, have plenty of the employing mechanical interlock, the structure after it improves respectively has shortcoming again, fails really to reach to prevent the improper purpose of closing of angle cock.Close autoalarm and train tail wind pressure anti-lock device for angle cock, they all are to be mounted on the trailer of train, whether it can only be closed angle cock is detected, reports to the police, but can not prevent closing of angle cock in the driving process.Concerning punching gas escape type angle cock, mainly be to utilize the sound that leakage or gas leakage produced that the body of calming the anger is arranged to judge whether break-make of angle cock, it uses the result also undesirable.

The purpose of this utility model is in order to design a kind of anti-closing type angle cock of simple in structure, dependable performance.

The utility model is to realize like this.The spherical valve of being made up of valve body, person in charge's joint, hose coupling, primary seal circle, secondary seal ring, spherical valve core, valve rod, regulating handle that it adopts is a building block, and its technical essential is: the internal diameter of primary seal circle is greater than the external diameter of secondary seal ring.On the sphere of ball-type spool ventilation both sides, be respectively equipped with disappointing groove, when the ball-type spool is in the closed position, disappointing groove on the sphere of a left side is positioned within the primary seal circle, disappointing groove on the right sphere strides across the end face of secondary seal ring, in the time of can realizing closing the door angle cock like this, with the effect of the discharge of the gas in the flexible pipe.Discharge outside the valve body for body that this is calmed the anger, on valve body, be provided with air gate.In order to reach the anti-pass effect of Ben Saimen, a ratchet device is installed between this valve rod and the regulating handle, its valve rod is captiveed joint with ratchet, and regulating handle and thumb wheel dish are connected to form.At this moment on the thumb wheel dish resilient pin is installed, valve body is provided with two blocks that limit thumb wheel disc spins angle, in case the thumb wheel dish is stirred ratchet easily, resilient pin also can be installed in respectively on two blocks.

Because the flexible pipe air-release mechanism that the utility model is taked is that primary seal circle and secondary seal ring are manufactured two kinds of different specifications, and is provided with disappointing groove on the sphere of ball-type spool,, can reach the effect of exitting well again so this plug door is simple, suitable.The valve rod of this angle cock is connected with regulating handle by a ratchet device, and be provided with resilient pin on the thumb wheel dish or on the block and on valve body, be provided with positive stop, so just can prevent that regulating handle from driving valve rod easily and rotating, play the anti-pass effect of angle cock effectively.

Fig. 1 is a structure principle chart of the present utility model;

Fig. 2 is the birds-eye view of Fig. 1 and the constructional drawing of ratchet device;

Fig. 3 is ball-type spool and a major and minor ring structure graph of a relation in A among Fig. 1-A section.

Below in conjunction with accompanying drawing the utility model is elaborated.

What main body of the present utility model adopted is: the ball valve of being made up of major joint 1, primary seal circle 15, ball-type spool 9, secondary sealing 12, valve body 3, hose coupling 11, valve rod 2 and regulating handle 8.It is responsible for joint 1, valve body 3 can be captiveed joint with hose coupling 11 threes, also valve body 3 and hose coupling 11 can be manufactured one.Be installed in the external diameter of the internal diameter of the primary seal circle 15 on person in charge's joint 1 inner end surface greater than the secondary seal ring 12 that is installed in hose coupling 11 inner end surfaces, so that on ball-type spool 9, establish the groove 10 that loses heart, when making ball-type spool 9 in off position, the inner chamber of hose coupling 11 is communicated with the inner chamber of valve body 3, pressure gas in hose coupling 11 and the flexible pipe inner chamber is emitted by the air gate on the valve body 3 14, at this moment, the disappointing groove 10 of ball-type spool 9 offsides is arranged in the internal diameter of primary seal circle 15, in case the gas leak in being responsible for.In order to prevent to have ponding or oil in the valve body 3, air gate 14 preferably is located at the lower end of valve body 3.Valve rod 2 is installed in the circular hole on the valve body 3, and its lower end is installed in the groove of ball-type spool 9 upper ends; Captive joint with ratchet device in the upper end of valve rod 2.Ratchet device is made up of ratchet 6, elastic pawl 5 and thumb wheel dish 4.Valve rod 2 is captiveed joint with ratchet 6.Elastic pawl 5 can be installed on the ratchet 6, also can be installed on the thumb wheel dish 4.If elastic pawl 5 is installed on the ratchet 6, the endoporus of its thumb wheel dish 4 is processed with allocating slot; If elastic pawl 5 is installed on the thumb wheel dish 4, be processed with allocating slot on its ratchet 6.In order to prevent to stir valve rod 2 easily, when the processing allocating slot, though processing on the ratchet 6 or processing on thumb wheel dish 4, its quantity can be four or eight etc.Regulating handle 8 is installed on the thumb wheel dish 4, and both can be captive joints, also can be hinged.In order to control the anglec of rotation of thumb wheel dish 4, on valve body 3, be provided with positive stop 16 and backstop 18.The resilient pin 17 that matches with forward and backward block also is installed on thumb wheel dish 4, and resilient pin 17 also can be installed in respectively on positive stop 16 and the backstop 18, mainly is the effect of playing stop gear.Like this, after this angle cock is opened, only understand that the people of this valve operating instruction could close the plug door, play the effect of anti-pass.In order clearly to represent this angle cock on off mode, at display panel 7 of the upper end of valve rod 2 fixed installation.Display panel 7 is an oblong, on two planes of its maximum, scribble reflex-reflective material, or installation reflecting element, it no matter is the on off mode of the demonstration angle cock that daytime or night all can be eye-catching, make things convenient for train crews and station staff that the break-make of angle cock is monitored, to prevent the generation of accident.For misoperation or improper artificially the closing that prevents the knuckle plug, be preferably in siren 13 of air gate place fixed installation of valve body 3.Because this angle cock all has pressure gas to discharge from air gate 14 in the process that opens or closes, and when it passes through siren 13, will sound.When closing angle cock as if generation is improper, this angle cock will be sounded, and reminds staff's attention, so that in time take measures, and trouble-saving generation.To the trasher, also play deterrent effect, to guarantee the safety of train.

Claims (3)

1, anti-shutting one way linking door, it comprises valve body (3), is responsible for joint (1), primary seal circle (15), ball-type spool (9), secondary seal ring (12), hose coupling (11), valve rod (2), regulating handle (8), and it is characterized in that: the internal diameter of primary seal circle (15) is greater than the external diameter of secondary seal ring (12); Be provided with disappointing groove (10) in the both sides of ball-type spool (9), the ball-type spool is positioned at closed condition, and the disappointing groove (10) in ball-type spool (9) left side is positioned within primary seal circle (15) internal diameter, and the disappointing groove (10) on right side strides across the end face of secondary seal ring (12); Captive joint with the ratchet (6) of ratchet device in the upper end of valve rod (2), the thumb wheel dish (4) of ratchet device is connected with regulating handle (8); The spacing positive stop (16) that is provided with thumb wheel dish (4) on the valve body (3) and backstop (18), thumb wheel dish (4) go up or forward and backward block on resilient pin (17) is being installed; Valve body (3) is provided with air gate (14).

2, anti-shutting one way linking door according to claim 1 is characterized in that: also be installed with display panel (7) in the upper end of valve rod (2).

3, anti-shutting one way linking door according to claim 1 and 2 is characterized in that: be installed with siren (13) on the air gate (14) of valve body (3).

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