CN2033871U - Electric vacuum breaking valve - Google Patents

Abstract

The utility model relates to a water interception device which prevents water on high position from flowing backwards along a hydrocone type flow passage in water supply and sewerage works. The electric vacuum breaking valve is composed of a valve body (12), a closing electric magnet (5), an opening electric magnet (1), a rocking arm (16), a movable valve (11), a fixed valve (13), a guiding axle (21), an energy storage spring (24), and a pressing cover (20). An electric vacuum breaking valve works according to negative logic system. The valve is started or stopped automatically, and original compressors and huge complicated pipe systems of a pump station are reduced. The utility model has the advantages of less investment, convenient operation, high sensitivity, and good safety, which is suitable for water interception of hydro cone type water supply and sewerage works and the hydraulic engineering.

Description

Electric vacuum breaking valve

The utility model relates to a kind of device that prevents that high-order water from flowing backwards along the hydrocone type pipeline in the water supply and sewage work, especially for the Motorized vacuum destructive valve of hydrocone type runner.

Existing hydrocone type runner pumping plant (or hydroelectric power plant or lead big vast plumber's journey) is equipped with mechanical energy storage on the hump of its hydrocone type runner, according to the pneumatic vacuum breaker valve of positive logic mode work.When needing cutout when having formed siphon in the runner, booster air pump, Open valve allows air enter runner rapidly, destroys vacuum and cuts off current.The FDQ type vacuum breaker valve that is generally used for large-scale hydrocone type runner pumping plant is exactly that the pressurized air that air compressor produces is sent into cylinder by pipeline, it is up to promote the cylinder inner carrier, the axis of guide by linking together with piston again, it is up together to drive movable valve, make the spring pressurized energy storage that is enclosed within the piston top simultaneously, behind the valve opening, air enters runner, destroys vacuum to current are cut off.When piston stroking upward to certain height, with the locating stud location, with prevent to die back piston and movable valve under the effect of gravity and spring and throttle down.When runner need form siphon once more, pull out locating stud by manpower, piston and movable valve are resetting rapidly under the effect of gravity and spring, and valve promptly is closed, and starts air exhauster this moment, and runner is pumped into vacuum and is formed siphon.Because the pneumatic vacuum breaker valve of FDQ type is to utilize mechanical energy storage, by the device of positive logic mode work, thereby when cylinder compressed air deficiency, be to start to be subjected to spring action and normally closed movable valve.The air pump working condition is had a power failure, the influence of mechanical failure or air pump etc.As if the air pump cisco unity malfunction, can cause the air pressure deficiency of cylinder compressed air, the negative pressure in the runner can not be eliminated, to valve is not opened, the runner vacuum is not destroyed, and high-order water will flow backwards along siphon piping, will jeopardize unit safety when serious; Resetting of pneumatic vacuum breaker valve must manually be pulled out locating stud, and be dangerous like this, also is not easy to automatic program control.

The purpose of this utility model is improved at above-mentioned deficiency exactly, with the safety reliability and the sensitivity of intensifier.Provide a kind of mechanical energy storage, by the Motorized vacuum destructive valve of negative logic mode work.

Technical solution of the present utility model is, keeps original valve body, valve mechanism, promotes piston motion with pressurized air and drives the axis of guide and start movable valve and make to promote gland by energy storage spring into and drive the axis of guide and start movable valve former; To rely on the effect throttle down from gravity and spring of movable valve, piston originally, and made to act on lid into and press and make valve closing, the active force that this applied force promptly forms with electromagnet energising back by the rocking arm of applied force by lever.Basic structure of the present utility model is on valve body (12), and movable valve (11), quiet valve (13) are formed valve; Gland (20), energy storage spring (24), energy storage spring seat (23) axis of guide (21) are formed the valve elevator system; Making electromagnet (5), rocking arm (16) rocking arm supporting base (19) are formed the valve closing system; Transmission arm (9), relief spring (6), dropout rocking arm (4), supporting rollern (15), supporting rollern rocking arm (17) supporting rollern seat (18), Returnning spring (14) are formed insurance system; Trip electromagnet (1), support (2), electrical apparatus release (3) forming control system.Rocking arm bearing plate (22) is equipped with on valve body (12) top.Gland (20) joins with the axis of guide (21).The axis of guide (21) head section is the T font, be enclosed within the gland (20) not deviate from, energy storage spring (24) is enclosed within on the axis of guide (21), under gland (20), in the energy storage spring seat (23), the other end of the axis of guide (21) joins by buffering axle sleeve (27) and movable valve (11).Be quiet valve (13) below the movable valve (11), quiet valve (13) is that screw is connected with valve body (12).Rocking arm (16) is contained on the rocking arm supporting base (19), and the one end contacts with gland (20), and the other end is a free end, thereunder, has making electromagnet (5) to fixedly connected with rocking arm bearing plate (22) by bolt; Roller rock arm (17) and dropout rocking arm (4) by supporting rollern seat (18) supporting are housed on rocking arm bearing plate (22), both connecting shafts, the moving direction of dropout rocking arm (4) control roller rock arm (17) is equipped with the free-ended roller of support arm (16) (15) on roller rock arm (17); Trip electromagnet (1) control electrical apparatus release (3) and dropout rocking arm (4) clutch, they are contained on the rocking arm bearing plate (22), between dropout rocking arm (4) and making electromagnet (5), couple together by connecting rod, relief spring (6), transmission arm (9), between trip electromagnet (1) and dropout rocking arm (4), be connected, to guarantee to move each other matching coordinative by roller Returnning spring (14).Working principle of the present utility model is, start making electromagnet (1), rocking arm (16) free end is moved upward, thereby making the rocking arm the other end withstand gland (20) moves downward, in compressed energy-storage spring (24), make the axis of guide (21) drive movable valve (11) and move downward throttle down, on the other hand, combined floodgate iron core (8) is when moving upward in the making electromagnet (5), by fixing transmission arm (9) drivening rod of its other end, relief spring (6) is up, make dropout rocking arm (4) and electrical apparatus release (3) interlock, to making roller rock arm (17) drive the bottom that supporting rollern (15) moves to rocking arm (16), withstand free end and do not make its whereabouts.Combined floodgate finishes, and making electromagnet (5) quits work.As starting valve, destroy vacuum, disconnect the power supply of trip electromagnet (1) earlier, its iron core back out of hand descends because of deadweight, the electrical apparatus release (3) of its below of percussion, electrical apparatus release (3) is separated with dropout rocking arm (4), out of control combined floodgate iron core this moment (8) descends because of deadweight, an end that drives dropout rocking arm (4) moves downward, force supporting rollern (15) to separate with rocking arm (16) free end, at this moment the energy storage spring of pressurized (24) moves because of external force disappears, heading on gland (20) the drive axis of guide (21) moves upward, mention movable valve (11), atmosphere is by entering runner between movable valve (11) and the quiet valve (13), thereby destroys vacuum, cut off flowing water.

Advantage of the present utility model is, utilizes mechanical energy storage, releases energy by it and Open valve destruction vacuum again, has reduced original air compressor of pumping plant and huge pipe-line system, has improved the reliability of destructive valve; Owing to adopted electromagnet to come the control valve opening and closing, guaranteed sensitivity, the Motorized vacuum destructive valve of this employing negative logic mode work is easy to use, and little investment can adapt to the cutout of various hydrocone type runner water supply and sewage work and hydraulic engineering.

Fig. 1, the signal of FDQ type vacuum breaker valve

Fig. 2, schematic representation of the present utility model

Below in conjunction with accompanying drawing embodiment of the present utility model is described:

Pneumatic vacuum breaker valve---the FDQ type vacuum breaker valve by the work of positive logic mode that Fig. 1, existing hydrocone type runner use, its working principle and basic structure front are described.

Fig. 2, by trip electromagnet (1), support (2), electrical apparatus release (3), dropout rocker (4), making electromagnet (5), relief spring (6), coil (7), combined floodgate iron core (8), transmission arm (9), protecting wire net (10), movable valve (11), valve body (12), quiet valve (13), Returnning spring (14), supporting rollern (15) rocking arm (16), roller rock arm (17), supporting rollern seat (18); rocking arm supporting base (19); gland (20); the axis of guide (21); rocking arm bearing plate (22) energy storage spring seat (23); energy storage spring (24); guideway (25); stiffening rib (26); buffering axle sleeve (27) etc. are formed the utility model.Valve body (12) adopts the cast iron materials casting, there is stiffening rib (26) centre, guideway (25) is arranged in the middle of the stiffening rib (26), quiet valve (13) is contained in valve body (12) bottom, with valve body (12) is that screw is connected, valve body (12) is peripherally equipped with protecting wire net (10), prevent that assorted holding from entering valve body (12) to influence valve closing bad, the energy storage spring seat (23) on valve body (12) top adopts cast iron casting, with valve body (12) is that bolt is connected, energy storage spring (24) is housed in the middle of energy storage spring seat (23), be enclosed within the gland (20), the T-shaped axis of guide (21) of head section passes energy storage spring (24), energy storage spring seat (23), guideway (25), join by buffering axle sleeve (27) and movable valve (11), both are that the spiral shell mosquito connects, nut is fastening, rocking arm bearing plate (22) is equipped with on valve body (12) top, and rocking arm supporting base (19) is arranged on rocking arm bearing plate (22), supporting rollern seat (18), support (2).Rocking arm (16) is on rocking arm supporting base (19), and one end and gland (20) join, and the other end is a free end, and its below has making electromagnet (5) to fixedly connected with rocking arm bearing plate (20) by bolt; Supporting rollern seat (18) is supported with roller rock arm (17) and dropout rocking arm (4) is roller (15) at roller rock arm (17); Support (2) is supporting the clutch of trip electromagnet (1) trip electromagnet (1) control electrical apparatus release (3) and dropout rocking arm (4); Constitute between dropout rocking arm (4) and the making electromagnet (5) by connecting rod, relief spring (6), transmission arm (9) and to be connected; Be connected by Returnning spring (14) between trip electromagnet (1) and the dropout rocking arm (4); Making electromagnet (5) has coil (7) and combined floodgate iron core (8).

Trip electromagnet (1) is used and is exchanged the 380V power supply, and making electromagnet (5) uses the 220V DC electrical source.Logical earlier the interchange makes trip electromagnet (1) action before closing a floodgate, electrical apparatus release (3) resets, send direct current to make making electromagnet (5) action again, combined floodgate iron core (8) is up, it is descending to make rocking arm (16) one ends push down gland (20), thereby compressed energy-storage spring (24) also drives the axis of guide (21) and makes movable valve (11) and quiet valve (13) closure, meanwhile, combined floodgate iron core (8) is being with the transmission back of the body (9), relief spring (6), connecting rod, dropout rocking arm (4) rises, make dropout rocking arm (4) and electrical apparatus release (3) interlock, at this moment, roller rocker (17) is being with roller (15) toward rocking arm (16) motion down under the effect of dropout rocking arm (4), the free end of support arm (16), combined floodgate finishes, the DC electrical source outage, combined floodgate magnetic core (8) stops to rise, because deadweight rocking arm (16) free end disengages, because roller (15) supporting, the free end of rocking arm (1) can not fall.Then start air exhauster and vacuumize, form the runner siphon.When tripping operation, need only cut off the 380V ac power supply, the iron core of trip electromagnet is out of hand, because of weighing, percussion electrical apparatus release (3), make electrical apparatus release (3) and dropout rocking arm (4) from, cause that losing combined floodgate iron core (5) whereabouts drive dropout rocking arm (4) action of hitting control makes supporting rollern (15) separate with rocking arm (16), thereby remove the pressure of rocking arm (16) gland (20), energy storage spring (24) disappears because of external force, releases energy and does, and mentions movable valve (11), atmosphere enters runner between movable valve of opening (11) and quiet valve (13) like this, has destroyed vacuum and cuts off current.

The utility model cooperates reliably with supporting rollern (15) for guaranteeing rocker (16), can also set up controlling device and damping device.

Claims (5)

1, a kind of Motorized vacuum destructive valve, valve body [12], movable valve [11], quiet valve [13], protecting wire net [10], the axis of guide [21], energy storage spring [24] are arranged, stiffening rib [26] is arranged in the middle of the valve body [12], guideway [25] is arranged in the middle of the stiffening rib [26], it is characterized in that having making electromagnet [5], rocking arm [16], rocking arm supporting base [19] to form the valve closing system; Transmission arm [9], relief spring [6], dropout rocking arm [4], supporting rollern rocking arm [17], supporting rollern [15], supporting rollern seat [18], Returnning spring [14] are formed insurance system; Trip electromagnet [1], support [2], electrical apparatus release [3] forming control system; Valve body [12] top is equipped with on rocking arm bearing plate [22], the axis of guide [21] and is with gland [20], and its other end joins by buffering axle sleeve [27] and movable valve [11], and energy storage spring seat [23] is fixedlyed connected with rocking arm bearing plate [22] by bolt.

2, Motorized vacuum destructive valve according to claim 1 is characterized in that, making electromagnet (5) has coil (7) and combined floodgate iron core (8), links to each other with dropout rocking arm (4) by transmission arm (9), relief spring (6), connecting rod.

3, Motorized vacuum destructive valve according to claim 1 is characterized in that, the axis of guide (21) head section is the T font.

4, Motorized vacuum destructive valve according to claim 1 is characterized in that, making electromagnet (5) uses the 220V DC electrical source.

5, Motorized vacuum destructive valve according to claim 1 is characterized in that, trip electromagnet (1) is used the 380V ac power supply.

Images