CN2177146Y

CN2177146Y - Lift and rotary type hydraulic automatic valve

Info

Publication number: CN2177146Y
Application number: CN 93229674
Authority: CN
Inventors: 张桂芝
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-13
Filing date: 1993-11-13
Publication date: 1994-09-14
Anticipated expiration: 2003-11-13

Abstract

The utility model relates to a lifting and rotary type hydraulic automatic valve used for automatically opening and closing via water pressure in a water supply system, mainly comprising a valve body, a valve core, a hydraulic cylinder, a switch, a rack bar hydraulic cylinder, etc. The utility model is characterized in that the water outlet valve of a water pump is simplified, and the valve is utilized as three valves, namely a water hammer arrestor, a check valve and a gate valve. The automatization of a pump station is realized, energy is saved, electric power is not utilized, resistance is little, and flow rate is high. The lifting and rotary type hydraulic automatic valve can be utilized normally under the harsh environment of the water supply system, and the requirements of modern industries and life are satisfied.

Description

Lift and rotary type hydraulic automatic valve

The utility model relates to and using in a kind of water supply system, rises automatically by hydraulic pressure and opens the screw type hydraulic automatic valve of locking.

In traditional water supply system, need to adorn water-hammer arrester, safety check, gate valve etc. on the water outlet pipeline of water pump.The late nineteen eighties,, the design of Tiny Drag Slow Shut Check Valves, electric valve was arranged once for solving numerous and diverse valve setting in the water supply system.These two kinds of designs, though cancelled water-hammer arrester, played the effect of valve generation two valves, and can recloser, but, under complex environment, very easily go wrong because these former apparatus structure complexity drive by electricity, can't work during power failure, so can't adapt to the needs of present production, life.

The purpose of this utility model is the design that will drive valve opening by a kind of hydrodynamic force automatically, make the utility model not only possess all functions of former water-hammer arrester, safety check, gate valve, and not fragile, without electric power, resistance is little, flow is big, realize the automation of pumping plant, can fully satisfy the needs of modernization industry and life.

The purpose of this utility model is achieved in that in the both sides of spool two branching pipes is housed respectively.When the water pump water outlet flow ipe, be supercharging V in face of flowing to the mouth of pipe ²/ 2g, carry flow to the mouth of pipe be the decompression V ²/ 2g, pressure reduction are 2V ²/ 2g, otherwise, when the pump stall, the current direction water pump of pipeline, former carry to flow to become in face of the flow direction, past reduces pressure and becomes supercharging V ²/ 2g, former becoming in face of the flow direction carried the flow direction, and the supercharging in past becomes decompression V ²/ 2g.No matter flow to and how to change, its pressure reduction all is 2V ²/ 2g.Connecting rod piston in this pressure reduction pushing switch device is lived the water that comes that comes water or pipeline of water pump to a side seal, only allow wherein side water inlet, the press water of pump or pipeline promotes piston and rises or descend, the tooth bar hydraulic piston moves to the left or to the right, above the piston or following water, the water of rack piston opposite side, its pressure are that zero-emission is fallen, finish the spool rise or descend the action of 60 °～hexagonal angle of rotation.

Screw type hydraulic automatic valve is contained on the pump outlet pipeline, and it is opened with starting mode of pump, and water pump stall and closing realizes the process of automation.State of rest: when water supply system remained static, then water pump stopped operating, valve closing.Start the feedwater process: in water supply system, water pump is rotated by static the beginning, and outlet pressure raises, and pump operation is normal, necessarily is higher than ducted pressure near the water pump side pressure.The connecting rod double-piston is shifted pipeline one side onto in the derailing switch, seals pipeline and comes water, also seals the passage that leads to draining.Water pump come water via derailing switch, one enters the piston cylinder bottom, piston rises, and lifts spool and also rises, and breaks away from the contact of valve body, the power of reducing friction.Another burst water flow then slowly marches on towards tooth bar hydraulic piston cylinder promotion piston and moves to opposite side, and gear is fixed on the spool, and spool is slowly rotated, and till the positioning handle on the spool leaned against on the positioning, the full open action was finished.Valve opening state keep the restriction that is not subjected to pipeline length.

Closing of valve, water pump stops operating in the water supply system, lose pressure and less than pipeline pressure, at this moment the connecting rod double-piston is pushed to water intake one side of water pump by the water that comes of pipeline, seals pump intake, and pipeline comes water to enter derailing switch, divide two strands by water outlet, one promotes piston fast and drives tooth bar to the tooth bar hydraulic piston cylinder, makes 60 °～hexagonal angle of spool revolution.Another strand is by the variable valve, and small flow is to piston top, and piston drives spool and slowly descends, and seals valve body and makes water intake, and valve cuts out.Regulate flow: water supply system finds that the water pump water supply flow is many, need turn flow down, open modulating valve, cut off the water that comes of water pump, and bleed off the water that comes of water pump in the derailing switch, pipeline come water to push the connecting rod double-piston to water pump to come the mouth of a river one side, at this moment the water of pipeline enters derailing switch, to the tooth bar oil hydraulic cylinder, promote spool corner along water outlet.Another strand slowly flow to piston cylinder top, piston slowly descends, valve begins to close, and realizes the location with the length of hand adjustment joint screw mandrel, when closing modulating valve, pipeline is opened Open valve again, till positioning handle pushes up screw mandrel.Promptly regulated flow.The water pump water filling: the antivacuum diversion system in low pond when switching on the pump, needs water filling, at this moment open bypath valve, ducted water is put in suction sleeve and the water pump, so that start pump working, the rotation of spool tooth bar hydraulic piston cylinder: two oil hydraulic cylinders are respectively charged into piston and connect piston rod jointly, tooth bar is arranged on the bar, and tooth bar promotes gear, and gear is fixed by spool, reach press water and promote piston, piston drives tooth bar, rack drives gear, gear driven valve core rotation.Spool the axle on be equipped with a positioning handle can change 60 °～120 ° also can be littler, reach the variation of spool path angle, the adjusting screw mandrel changeable, stop positioning handle.In two seal rings of valve body, one of them leaves the exit or entrance of a clitch, so as spool when descending draining use.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is a plan view of the present utility model, also is that specification digest is with scheming.

Fig. 2 is a left view of the present utility model.

Fig. 3 is a plan view of the present utility model.

Fig. 4 is the sectional view of the utility model derailing switch.

Fig. 5 is the sectional view of the utility model gear hydraulic cylinder.

With reference to Fig. 1～5, number in the figure is respectively: 1 valve body, 2 positioning shafts, 3 holes, 4 pipes, 5 through holes, 6 spools, 7 pressure nozzles, 8 pipes, 9 selector valves, 10 hydraulic cylinders, 11 derailing switches, 12 pipes, 13 lids, 14 tooth bar oil hydraulic cylinders, 15 multidiameter shafts, 16 pipes, 17 dust covers, 18 handles, 19 nuts, 20 gears, 21 handwheels, 22 screw mandrels, 23 bolts, 24 pipes, 25 pipes, 26 variable valves, 27 pipes, 28 variable valves, 29 holes, 30 horn mouths, 31 seal rings, 32 seal rings, 33 nuts, 34 pads, 35 pistons, 36 positioning blocks, 37 nuts, 38 cross the mouth of a river, and 39,40 pipes, 41 bypass valve, 42 cross the mouth of a river, 43 screws, and 44 lids, 45 cross the mouth of a river, 46 screws, 47 screws, 48 cross the mouth of a river, and 49 cross the mouth of a river, 50 screws, 51 lids, 52 cross the mouth of a river, 53 screws, 54 limit daiss, 55 connecting rods, 56 cross the mouth of a river, 57 valve bodies, 58 seal rings, 59 pistons, 60 nuts, 61 screws, 62 lids, 63 cross the mouth of a river, 64 screws, 65 cylinder bodies, 66 pipes, 67 teeth, 68 pistons, 69 nuts, 70 screws, 71 cross the mouth of a river, 72 lids, 73 screws, 74 tooth bar connecting rods, 75 tooth bars, 76 bases, 77 seal rings, 78 cross the mouth of a river, and 79 cross the mouth of a river, 80 pistons, 81 pistons.

With reference to Fig. 1～3, the utility model is by valve body 1, spool 6, and hydraulic cylinder 10, derailing switch 11, the tooth bar oil hydraulic cylinder, 14 form.Wherein valve body 1 and hydraulic cylinder 10 usefulness bolts 23 rigidity are connected as one, derailing switch 11 is fixed by bolts on the flange plate of hydraulic cylinder 10, the intrinsic lid 13 of the top seal of hydraulic cylinder 10, tooth bar oil hydraulic cylinder 14 usefulness bolt are installed in to be covered on 13, spool is a vertebra platform shape,, there is the lid 13 of through hole in multidiameter shaft 15 hermetically passing hydraulic cylinders 10 on the vertebra deck valve core and generation, dust cover 17 is equipped with in the upper end, gear 20 keys are connected between the dust cover 17 and lid 13 of multidiameter shaft 15, positioning block 36 and seat 39 are arranged on and cover on 13,, there is screw thread in generation in seat 39 holes, screw mandrel 22 is threaded and installs on present 39, handwheel 21 is equipped with in screw mandrel 22 ends, managing 4 one ends is connected with the mistake mouth of a river 45, the other end is arranged on a side of spool 6, on the pipe 4 selector valve 9 is housed, manage 8 one ends and cross the mouth of a river 48 and join, the other end and hydraulic cylinder 10 lower ends join, manage 12 1 ends and cross the mouth of a river 63 and join, the other end is connected with the mistake mouth of a river 48 by variable valve 28, manage 66 1 ends and cross the mouth of a river 79 and join, the other end by variable valve 28 with cross the mouth of a river 48 and join, manage 27 1 ends and cross the mouth of a river 52 and join, the other end is arranged on the opposite side of spool 6, manage 16 1 terminations and cross the mouth of a river 78, the other end is taken over the mouth of a river 49, manages 24 1 pipe nipples 16, and the other end is taken over the mouth of a river 52, manage 25 1 and terminate on 24, the other end is communicated with the top of hydraulic cylinder 10 by variable valve 26.Spool 6 has four arc shaped surfaces, and wherein two non-conterminous arc shaped surfaces are sealing surfaces, and two other arc shaped surface was done water channel.Make horizontal tangent from the arc sealing surface central point of spool 6, two tangent lines are parallel or intersect to form angle θ, 0≤θ≤45 °, and the central point of sealing surface can rise 0.1mm to the utility model valve body nominal bore Dg when opening.Two to cross the central point line of water channels parallel with the horizontal tangent of two sealing surface central points or intersect to form angle θ, 0≤θ≤45 °.

With reference to Fig. 4, derailing switch of the present utility model is by valve body 57, piston 80,81,

lid

44,51 and connecting rod 55 are formed, and its

middle cover

44,51

usefulness screws

43,47,50,53 are packed in the two ends of piston cylinder, piston 80,81 is installed in the two ends of connecting rod 55, limit dais 54 is arranged on the neutral position in the valve body, and lid 44 was provided with the mouth of a river 45, and lid 51 was provided with the mouth of a river 52, be provided with the mouth of a

river

48,49 above the valve body 57, and crossed the mouth of a river 56 and be arranged on the position that valve body 57 and connecting rod 55 horizontal planes intersect.

With reference to Fig. 5, tooth bar oil hydraulic cylinder 14 is by gear 20, tooth bar connecting rod 74, and piston 59,68, cylinder body 65 is formed, and piston 59 and 68 are equipped with in its middle rack connecting rod 74 two ends, and piston cylinder is made up of two-part, and tooth bar 75 places between piston cylinder two-part and with gear 20 and is meshed.

Working principle of the present utility model and process are as follows: spool 6 is equipped with for conical cavity in the centre of the valve body 1 that two ends are connected with pipeline, in the both sides of spool 6 two water pipes 4 are housed respectively, wherein on a pipe selector valve 9 is housed, when the flow of water changes, when producing pressure reduction just the piston rod of the cylinder body of pushing switch device 11 the inside to a side, seal coming water or ductedly coming water of water pump, wherein side water inlet, the piston that the hydraulic pressure that the water of pump or pipeline forms just promotes to be contained in the hydraulic cylinder 10 rises or descends, thereby drive the lifting of whole spool 6, the double-piston connecting rod in the cylinder body of tooth bar oil hydraulic cylinder moves to the left or to the right, above the piston or following water, the water of rack piston opposite side, drain when its pressure is zero, finish spool rise or decline, be fixed on gear 20 and tooth bar 75 engagements on the spool, thereby drive valve core rotation, the action of 60 °～hexagonal angle, handle 18 is corner fixedly, and bypass valve 41 is a common valve, close at ordinary times, the time spent beats and closes overcurrent usefulness.Length by handwheel 21 usefulness hand adjustments joint screw mandrel 22 realizes the location.By regulate on the water pipe 4 (modulating valve) but the water flow switch valve of selector valve 9.A curved wall is arranged on the cylinder cap 13, and the range of movement of restriction handle plays the role of

positioning.Variable valve

26,28 has a slidable cone, and flow diminishes when front slide, and flow becomes big during reverse slide.

Characteristics of the present utility model have been to simplify the valve setting of pump outlet, have realized valve generation three valves, and energy saving has guaranteed the normal use under the abominable situation of environment in water supply system, has realized the automation of pumping plant.

Claims

1, a kind of screw type hydraulic automatic valve, comprise valve body 1, bypass valve 41, selector valve 9, it is characterized in that: valve body 1 and hydraulic cylinder 10 usefulness bolts 23 are connected as one, derailing switch 11 is fixed by bolts on the flange plate of hydraulic cylinder 10, the top seal of hydraulic cylinder 10 is fixed with and covers 13, tooth bar oil hydraulic cylinder 14 usefulness bolt are installed in to be covered on 13, spool is a vertebra platform shape, in multidiameter shaft 15 hermetically passing hydraulic cylinders 10 on the vertebra deck valve core and generation, have on the lid 13 of through hole, dust cover 17 is equipped with in the upper end, gear 20 keys are connected between the dust cover 17 and lid 13 of multidiameter shaft 15, positioning block 36 and seat 39 are arranged on and cover on 13,, there is screw thread in generation in seat 39 holes, screw mandrel 22 is threaded on the fitting seat 39, in screw mandrel 22 ends handwheel 21 is housed, managing 4 one ends is connected with the mistake mouth of a river 45, the other end is arranged on a side of spool 6, on the pipe 4 selector valve 9 is housed, manage 8 one ends and cross the mouth of a river 48 and join, the other end and hydraulic cylinder 10 lower ends join, and manage 12 1 ends and cross the mouth of a river 63 and join, and the other end is connected with the mistake mouth of a river 48 by variable valve 28, manage 12 1 ends and cross the mouth of a river 79 and join, the other end by variable valve 28 with cross the mouth of a river 48 and join, manage 27 1 ends and cross the mouth of a river 52 and join, the other end is arranged on the opposite side of spool 6, manage 16 1 terminations and cross the mouth of a river 78, the other end is taken over the mouth of a river 49, manages 24 1 pipe nipples 16, and the other end is taken over the mouth of a river 52, manage 25 1 and terminate on the pipe 24, the other end is communicated with hydraulic cylinder top by variable valve 26.

2, lift and rotary type automatic valve according to claim 1, it is characterized in that: derailing switch 11 is by valve body 57, piston 80,81, lid 44,51 and connecting rod 55 are formed, its middle cover 44,51 usefulness screws 43,47,50,53 are packed in the two ends of piston cylinder, piston 80,81 is installed in the two ends of connecting rod 55, limit dais 54 is arranged on the neutral position in the valve body, lid 44 was provided with the mouth of a river 45, lid 51 was provided with the mouth of a river 52, be provided with the mouth of a river 48,49 above the valve body 57, the connecting rod double-piston was arranged in the cylinder body, but move left and right.

3, screw type hydraulic automatic valve according to claim 1, it is characterized in that: tooth bar oil hydraulic cylinder 14 is by gear 20, tooth bar connecting rod 74, piston 59,68, cylinder body 65 is formed, piston 59 and 68 are equipped with in its middle rack connecting rod 74 two ends, and tooth bar 75 places between piston cylinder two-part and with gear 20 and is meshed.

4, hydraulic pressure automatic valve according to claim 1, it is characterized in that: four arc shaped surfaces of spool 6, wherein two non-conterminous arc shaped surfaces are sealing surfaces, two other arc shaped surface was done water channel, make horizontal tangent from the arc sealing surface central point of spool 6, two tangent lines are parallel or intersect to form angle θ, 0≤θ≤45 °, the central point of sealing surface can rise 0.1mm to nominal bore Dg when opening, two to cross the central point line of water channels parallel with the horizontal tangent of two sealing surface central points or intersect to form angle θ.