CN2835655Y

CN2835655Y - Butterfly type hydraulically controlled water pump valve

Info

Publication number: CN2835655Y
Application number: CN 200520060597
Authority: CN
Inventors: 叶剑光
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-23
Filing date: 2005-06-23
Publication date: 2006-11-08
Anticipated expiration: 2015-06-23

Abstract

The utility model relates to a butterfly type hydraulic control water pump valve, which comprises an eccentric butterfly valve [1], an oil hydraulic cylinder [9], an oil hydraulic cylinder support frame [2], a hydraulic control valve [17] and a hydraulic diaphragm box [16]; one end of a valve shaft [3] is extended outside a valve body, and the valve shaft [3] and the rocker arm [4] are connected together via a flat key; the other end of the rocker arm is connected with a piston connecting rod [19] of the oil hydraulic cylinder [9], the oil hydraulic cylinder support frame [2] is arranged on the valve body, and the oil hydraulic cylinder [9] is hung on the support frame [2] via a hinge support shaft [8]; the upper end and the lower end of the oil hydraulic cylinder [9] are externally connected with an oil return pipe [18] which is connected with the hydraulic control valve [17], and the hydraulic diaphragm box [16] is arranged on the hydraulic control valve [17]; one end of the hydraulic diaphragm box [16] is communicated with an inlet of the eccentric butterfly valve [1] via a pipeline [15], and a check valve [10] is arranged on an oil return chute in the oil hydraulic cylinder [9]. When a water pump is started, the closing of the water pump valve can be realized; when starting is finished, the water pump reaches rated pressure; at first, the water pump valve is slowly opened, and then the water pump valve is quickly opened; when the water pump is stopped, the water pump valve is quickly closed to a preset position and slowly closed; the impact of a water hammer is reduced.

Description

Butterfly type hydraulic control water pump valve

Technical field

The utility model relates to the device that a kind of controlling liquid flows, particularly a kind of butterfly type hydraulic control water pump valve that is used to be installed on the exit of pump pipeline.

Background technique

Multiple control valve for water pump is arranged in the market, its basic principle all is the hydraulic pressure of importing and exporting by valve, diaphragm or piston in valve diaphragm control room or the piston control room are moved up and down, drive the valve rod that is fixed on diaphragm or the piston and move up and down, thereby valve plate is opened and closed.This technology can realize that valve automatically slowly opens, and promptly just drives valve and close then fast earlier when closing to close slowly when starting mode of pump.But realize the non-loaded startup of water pump, promptly be in closed condition all the time, still will realize by controlling on the diaphragm control room valve of chamber and valve export connecting tube artificially at starting mode of pump to rated pressure early gate.This kind valve be owing to will arrive on-the-spot switch valve, or realizes telecontrol by the increase solenoid valve, and is all cumbersome.And this valve body is long-pending big, flow resistance is high, acquisition cost and operating cost are all higher.

Summary of the invention

The purpose of this utility model be to overcome the shortcoming of above-mentioned prior art and provide a kind of have close when realizing starting mode of pump, startup finishes, water pump reaches rated pressure and opens, earlier close the precalculated position fast during termination of pumping, and then slowly close, reduce the butterfly type hydraulic control water pump valve of impact of water hammer.

The purpose of this utility model realizes by following technical measures: a kind of butterfly type hydraulic control water pump valve, comprise eccentric dish valve, be laid in the outer oil hydraulic cylinder of eccentric dish valve and the bearing of oil hydraulic cylinder, bearing is fixed on the eccentric dish valve, oil hydraulic cylinder is connected with the bearing hinging supporting shaft, the piston rod of oil hydraulic cylinder is connected with bearing pin with rocking arm; the other end of rocking arm is connected with flat key with valve shaft; have oil-return groove passage and bypass channel in the oil hydraulic cylinder; return tube is housed outside oil hydraulic cylinder; return tube is connected to stop valve and hydraulic control valve; the hydraulic diaphragm box is installed on the hydraulic control valve, and hydraulic diaphragm box one end is communicated with the import of eccentric dish valve by the road.On the oil-return groove passage in the oil hydraulic cylinder safety check is housed, this safety check is adjustable, comprise be installed on the oil hydraulic cylinder lower cover plate, the spool of corresponding spill port passage, there is the screw-internal thread fit of outside thread and lower cover plate the spool outer end, the spool front end has shrinkage pool, and spring, pressure ring, ball sealer are housed in the shrinkage pool successively.

The lining height of oil hydraulic cylinder is corresponding with oil hydraulic cylinder inner chamber height, and lining has the bypass channel that is communicated with oil-return groove from top to bottom.

The utility model is reasonable in design, hydraulic control water pump valve cuts out in the time of can realizing starting mode of pump, startup finishes, water pump reaches rated pressure, hydraulic control water pump valve slowly is opened to the precalculated position earlier and then opens fast, hydraulic control water pump valve closes earlier the precalculated position fast during termination of pumping, and then slowly close, reduce impact of water hammer.And volume is little, in light weight, flow resistance is low, can effectively reduce and purchase and operating cost.

Description of drawings

Fig. 1 is a structural drawing of the present utility model;

Fig. 2 is the structural drawing of oil hydraulic cylinder of the present utility model;

Fig. 3 is that the A-A of Fig. 2 is to sectional view;

Fig. 4 is the sectional view after the B of Fig. 2 partly amplifies;

Fig. 5 is the structural drawing of hydraulic control valve of the present utility model and hydraulic diaphragm box.

Embodiment

With reference to Fig. 1, a kind of butterfly type hydraulic control water pump valve, comprise eccentric dish valve [1], be laid in the outer oil hydraulic cylinder [9] of eccentric dish valve and the bearing [2] of oil hydraulic cylinder, bearing [2] is fixed on the eccentric dish valve [1], oil hydraulic cylinder [9] is connected with bearing [2] hinging supporting shaft, can rotate along the fulcrum place, and the piston rod [19] of oil hydraulic cylinder [9] is connected with bearing pin [5] with rocking arm [4]; the other end of rocking arm is connected with flat key with valve shaft [3], drives rocking arm [4] swing when valve plate opens and closes.Valve plate, valve shaft, rocking arm, piston rod form continuous action relation.

The outer return tube [18] that is equipped with of oil hydraulic cylinder [9], return tube [18] is connected to stop valve [6] and hydraulic control valve [17], hydraulic control valve [17] is gone up hydraulic diaphragm box [16] is installed, hydraulic diaphragm box [16] one ends [15] by the road are communicated with eccentric dish valve [1] import, and pipeline [15] is equipped with filter [13], modulating valve [14] and pressure gauge [12].Return tube [18] two ends of oil hydraulic cylinder [9] are connected on respectively on the upper and lower cover plate [7], [11] of oil hydraulic cylinder [9], oil hydraulic cylinder [9] is gone up lower inner cavity connect.

With reference to Fig. 2, Fig. 3 demonstration is the structural drawing of oil hydraulic cylinder.Lining [25] height of oil hydraulic cylinder [9] is corresponding with oil hydraulic cylinder [9] inner chamber, promptly be installed in the inwall of oil hydraulic cylinder [9] from top to bottom, the appropriate location, bottom of lining [25] is to having four bypass channels [26] between the tip position, wherein two bypass channels [26] are connected two oil-return grooves [24] of opening in lining [25] periphery respectively, oil-return groove [24] is after the circular groove [28] of the inner end, housing [27] bottom of oil hydraulic cylinder [9] compiles, connect oil hydraulic cylinder [9] bottom inner chamber through the spill port [29] of lower cover plate [11] lining again, on lower cover plate [11], the position of corresponding spill port [29] is equipped with safety check [10], by spill port [29], safety check [10], circular groove [28], oil-return groove [24] forms drainback passage.

With reference to Fig. 4, this safety check [10] for adjustable, be installed on the oil hydraulic cylinder lower cover plate [11], the spool [30] that corresponding spill port [29] flows to, there is the screw-internal thread fit on outside thread and the lower cover plate [11] spool [30] outer end, spool [30] front end is provided with shrinkage pool, there is seal ring [31] at the middle part of spool [30], and spring [32], pressure ring [33], ball sealer [34] are housed in the shrinkage pool successively, and ball sealer [34] aligns spill port [29] position.There is circular hole [35] to be communicated with inside and outside the shrinkage pool on the shrinkage pool outer wall.Like this, the hydraulic oil of oil hydraulic cylinder can only be through spill port [29], safety check [10], circular groove [28], oil-return groove [24] circulation when drainback passage flows, on the contrary but can not, play the non-return effect.

With reference to Fig. 5 demonstration is the structural drawing of hydraulic control valve [17] and hydraulic diaphragm box [16], the epimere of hydraulic control valve is hydraulic chamber [43], the stage casing is plunger [41], hypomere is spring seat [37], spring [38] is equipped with in spring seat [37] lining, spring seat is to be threaded with valve body, and gland nut [39] arranged, by Regulation spring seat screw thread is the elastic force of adjustable springs, multiple tracks O RunddichtringO [40] is arranged on the plunger of hydraulic control valve [41], there is one section plunger [42] that diameter is smaller on the epimere top of plunger, the O RunddichtringO is arranged one on the small plunger [42], the smaller plunger of the middle part section of having diameter of plunger, when plunger moves down, two liquid of taking over can be by the circulation of this section small plunger.The upper end of hydraulic control valve [17] is connected with hydraulic diaphragm box [16] with screw thread, there is opening at hydraulic diaphragm box [16] two ends, diaphragm of rubber [45] periphery is compressed by barrier film box cover [47], diaphragm of rubber is divided into chamber [46] and following chamber [44] with the hydraulic diaphragm box, the opening of last chamber is communicated with eccentric dish valve [1] import by pipeline [15] and pressure gauge [12], modulating valve [14], filter [13], the opening of following chamber [44] is communicated with the hydraulic chamber [43] of hydraulic control valve [17], and hydraulic oil is filled with hydraulic chamber [43] in following chamber [44].

The utility model valve control procedure is as follows:

Control during starting mode of pump: eccentric dish valve this moment [1] is in closed condition.Starting mode of pump increases the fluid pressure of eccentric dish valve [1] import, fluid pressure through chamber [44], hydraulic control valve hydraulic chamber [43] under chamber [46], diaphragm of rubber [45], the hydraulic diaphragm box on the filter [13], modulating valve [14], hydraulic diaphragm box, act on the small plunger [42] of hydraulic control valve, when hydraulic pressure during less than spring [38] elastic force of hydraulic control valve [17], hydraulic control valve is in closed condition, oil in the oil hydraulic cylinder can not flow, thereby piston rod [19] can't move, valve plate is lockable, and eccentric dish valve [1] can not be opened.When hydraulic pressure during greater than spring [38] elastic force of hydraulic control valve [17], hydraulic control valve plunger [41] is to the spring side shifting, hydraulic control valve is opened, the oil of oil hydraulic cylinder epicoele is along connecting stop valve [6] at this moment, the pipeline [18] of hydraulic control valve [17] flows back to the oil hydraulic cylinder cavity of resorption, piston rod [19] moves up under the drive of rocking arm [4], valve plate is unlocked, the valve plate of eccentric dish valve [1] is under the promotion of import fluid pressure, rotate up and open, eccentric dish valve [1] is opened, and moves to bypass channel [26] position on piston rod [19], hydraulic oil refluxes by 4 bypass channels, damping function reduces, and piston rod [19] moves on can be fast, opens soon after valve is opened earlier slowly.The delay cracking pressure that can realize regulating the utility model valve by spring [38] elastic force of regulating hydraulic control valve [17], can realize regulating the speed of opening slowly of the utility model valve by regulating stop valve [6], open earlier the purpose of quick opening valve afterwards slowly after starting mode of pump reaches predetermined pressure thereby reach.

Control when water pump cuts out: eccentric dish valve this moment [1] is in opening state.When water pump cuts out, under the fluid pressure effect of pipe network, liquid begins to reflux, the pressure of eccentric dish valve this moment [1] outlet is greater than the pressure of import, valve plate begins rotary closure under the effect of self gravitation and fluid pressure, because lining [25] position, middle and upper part of oil hydraulic cylinder [9] has four bypass channels [26], so damping function is very little, eccentric dish valve [1] quick closedown.When piston moved to oil hydraulic cylinder [9] hypomere and do not have the position of bypass channel, the damping function of oil hydraulic cylinder strengthened, and eccentric dish valve [1] slowly cuts out.Because water pump cuts out, valve inlet hydraulic pressure descends rapidly, hydraulic control valve plunger [41] resets rapidly under the effect of spring force, and hydraulic control valve [17] cuts out, and the butterfly type hydraulic control water pump slow shut-in time of valve is controlled by safety check [10] fully.By regulating safety check [10] is the speed that may command hydraulic oil refluxes, thereby the time that control butterfly type hydraulic control water pump valve slowly cuts out reduces impact of water hammer.

Claims

1, a kind of butterfly type hydraulic control water pump valve, comprise eccentric-butterfly-valve [1], be laid in the outer oil hydraulic cylinder [9] of eccentric-butterfly-valve and the bearing [2] of oil hydraulic cylinder, bearing [2] is fixed on the eccentric-butterfly-valve [1], oil hydraulic cylinder [9] is connected with bearing [2] hinging supporting shaft, the piston rod of oil hydraulic cylinder [19] is connected with rocking arm [4] bearing pin, oil hydraulic cylinder has oil-return groove in [9], it is characterized in that outside oil hydraulic cylinder [9], being equipped with return tube [18], return tube [18] is connected to hydraulic control valve [17], hydraulic control valve [17] is gone up hydraulic diaphragm box [16] is installed, hydraulic diaphragm box [16] one ends [15] by the road are communicated with eccentric-butterfly-valve [1] import, on the oil-return groove passage in the oil hydraulic cylinder [9] safety check [10] are housed.

2, butterfly hydraulic control water pump valve according to claim 1, the epimere that it is characterized in that hydraulic control valve [17] is that hydraulic chamber [43], stage casing are that plunger [41], hypomere are spring seat [37], spring seat is to be threaded with valve body, and gland nut [39] arranged, multiple tracks O RunddichtringO [40] is arranged on the plunger of hydraulic control valve, there is one section plunger [42] that diameter is smaller on the epimere top of plunger, and the O RunddichtringO is arranged one on the small plunger [42].

3, butterfly type hydraulic control water pump valve according to claim 1, it is characterized in that: the epimere of hydraulic control valve [17] is connected with hydraulic diaphragm box [16], diaphragm of rubber [45] periphery in the hydraulic diaphragm box is compressed by barrier film box cover [47], diaphragm of rubber is divided into chamber [46] and following chamber [44] with the hydraulic diaphragm box, the opening of last chamber is communicated with pipeline [15], and the opening of following chamber is communicated with the hydraulic chamber of hydraulic control valve [43].

4, butterfly hydraulic control water pump valve according to claim 1, it is characterized in that safety check [10] is for adjustable, comprise and be installed in that oil hydraulic cylinder lower cover plate [11] is gone up, the spool [30] of corresponding spill port passage, there is the screw-internal thread fit of outside thread and lower cover plate [11] spool [30] outer end, spool [30] front end has shrinkage pool, and spring [32], pressure ring [33], ball sealer [34] are housed in the shrinkage pool successively.