CN200946579Y

CN200946579Y - Butterfly type hydraulic water pump valve

Info

Publication number: CN200946579Y
Application number: CN 200620065265
Authority: CN
Inventors: 叶剑光
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-28
Filing date: 2006-09-28
Publication date: 2007-09-12
Anticipated expiration: 2016-09-28

Abstract

A hydraulic control water pump butterfly valve comprises an eccentric butterfly valve [1], an oil pressure cylinder [9], an oil pressure cylinder frame [2], a hydraulic control valve [16] and a hydraulic diaphragm box [15]. One end of the valve shaft [3] extends out of the valve body and connects via flat keys with a rocker arm [4], the other end of which connects with piston link [18] of the oil pressure cylinder [9]; the oil pressure cylinder frame [2] is mounted on the valve body; the oil pressure cylinder [9] is hung on the frame [2] via a hinge fulcrum [8]; upper and lower ends of the oil pressure cylinder [9] connect externally with an oil return pipe [17], which is provided with the hydraulic control valve [16]; the hydraulic control valve [16] is provided with the hydraulic diaphragm box [15] and a retaining adjusting valve [28], one end of the hydraulic diaphragm box [15] communicating with the eccentric butterfly valve [1] via a pipeline. With the utility model, the hydraulic control water pump butterfly valve is closed when the water pump is being started up; when the pump start is finished and the water pump has gained the set pressure, the hydraulic control water pump butterfly valve may be opened first slowly and then swiftly; when the pump is stopped, the hydraulic control water pump butterfly valve may be closed first swiftly to a set position and then slowly shut, thereby reducing the impact of the water hammer.

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 is to overcome the shortcoming of above-mentioned prior art and provides a kind of and have that valve is in closed condition when realizing starting mode of pump, startup finishes, exit of pump reaches rated pressure and opens, close earlier the precalculated position during termination of pumping fast, 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-butterfly-valve, be laid in the outer oil hydraulic cylinder of eccentric-butterfly-valve and the bearing of oil hydraulic cylinder, bearing is fixed on the eccentric-butterfly-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, and the other end of rocking arm is connected with flat key with valve shaft, and lining is housed in the oil hydraulic cylinder, the height of lining is corresponding with oil hydraulic cylinder inner chamber height, and the epimere stage casing of lining has bypass channel.Return tube is housed outside oil hydraulic cylinder, and return tube is connected to stop valve and hydraulic control valve, and the hydraulic diaphragm box is installed on the hydraulic control valve, and hydraulic diaphragm box one end is communicated with the eccentric-butterfly-valve import by the road.The non-return modulating valve also is installed on the hydraulic control valve, and this valve has non-return and regulatory function.

The utility model is reasonable in design, butterfly type hydraulic control water pump valve is in closed condition in the time of can realizing starting mode of pump, startup end, butterfly type hydraulic control water pump valve slowly are opened to the precalculated position earlier and then open fast, butterfly type 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 the structural drawing of hydraulic control valve of the present utility model and hydraulic diaphragm box;

Fig. 4 is the structural drawing of non-return modulating valve of the present utility model.

Embodiment

With reference to Fig. 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, can rotate along the fulcrum place, and the piston rod [18] 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 [17] that is equipped with of oil hydraulic cylinder [9], return tube [17] is connected to stop valve [6] and hydraulic control valve [16], hydraulic control valve [16] is gone up hydraulic diaphragm box [15] is installed, hydraulic diaphragm box [15] one ends [14] by the road are communicated with eccentric-butterfly-valve [1] import, and pipeline [14] is equipped with filter [12], modulating valve [13] and pressure gauge [11].Return tube [17] two ends are connected on respectively on the upper and lower cover plate [7], [10] of oil hydraulic cylinder [9], oil hydraulic cylinder [9] is gone up lower inner cavity connect.

With reference to Fig. 2, demonstration is the structural drawing of oil hydraulic cylinder.Lining [25] height in the oil hydraulic cylinder is corresponding with the oil hydraulic cylinder inner chamber, promptly is installed in from top to bottom in the inwall of oil hydraulic cylinder, and the appropriate location, bottom of lining [25] is to having four bypass channels [26] between the tip position.

With reference to Fig. 3 demonstration is the structural drawing of hydraulic control valve [16] and hydraulic diaphragm box [15], 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], the epimere of hydraulic control valve is communicated with chamber under the hydraulic diaphragm box, the smaller plunger of the middle part section of having diameter of plunger, when plunger moves down, two hydraulic oil of taking over can be by the circulation of this section small plunger.The upper end of hydraulic control valve [16] is connected with hydraulic diaphragm box [15] with screw thread, there is opening at hydraulic diaphragm box [15] 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-butterfly-valve [1] import by pipeline [14] and pressure gauge [11], modulating valve [13], filter [12], the opening of following chamber [44] is communicated with the epimere of hydraulic control valve [16], and the epimere of following chamber [44] and hydraulic control valve is filled with hydraulic oil.

With reference to Fig. 4 demonstration is the structural drawing of non-return modulating valve [28].The import and export passage of non-return modulating valve is imported and exported channel connection with the hydraulic oil of hydraulic control valve [16] respectively, non-return modulating valve [28] front end has shrinkage pool, there is seal ring [29] at the middle part of valve, spring [31], pressure ring [32], ball sealer [33] are housed in the shrinkage pool successively, ball sealer [33] aligns the oil inlet passage position, ball sealer [33] can move forward and backward in shrinkage pool, and equalizing orifice [30] is arranged on the shrinkage pool.Like this, when hydraulic control valve [16] when closing, the hydraulic oil of oil hydraulic cylinder can only pass through return tube [17] and non-return modulating valve [28] flows to the upper end of oil hydraulic cylinder [9], on the contrary but can not, play the non-return effect.And,, valve is moved forward and backward, i.e. the speed of can regulate oil return, thereby slow shut-in time of control valve by the screw thread of adjusting non-return modulating valve and the nut [34] at rear portion.

The utility model valve control procedure is as follows:

Control during starting mode of pump: eccentric-butterfly-valve this moment [1] is in closed condition.Starting mode of pump increases the fluid pressure of eccentric-butterfly-valve [1] import, fluid pressure through chamber [44] under chamber [46], diaphragm of rubber [45], the hydraulic diaphragm box on the filter [12], modulating valve [13], hydraulic diaphragm box, act on the plunger [41] of hydraulic control valve, when hydraulic pressure during less than spring [38] elastic force of hydraulic control valve [16], hydraulic control valve is in closed condition, piston rod [18] can't move, valve plate is lockable, and eccentric-butterfly-valve [1] can not be opened.When hydraulic pressure during greater than spring [38] elastic force of hydraulic control valve [16], plunger [41] is to the spring side shifting, hydraulic control valve is opened, the oil of chamber is along connecting stop valve [6] on this moment oil hydraulic cylinder, the return tube [17] of hydraulic control valve [16] flows back to chamber under the oil hydraulic cylinder, piston rod [18] moves up under the drive of rocking arm [4], valve plate is unlocked, the valve plate of eccentric-butterfly-valve [1] is under the promotion of import fluid pressure, rotate up, eccentric-butterfly-valve [1] is opened, and moves to bypass channel [26] position on piston rod [18], hydraulic oil refluxes by 4 bypass channels, damping function reduces, and piston rod [18] moves on can be fast, opens soon after valve is opened earlier slowly.

Control when water pump cuts out: eccentric-butterfly-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-butterfly-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-butterfly-valve [1] quick closedown.When piston moved to oil hydraulic cylinder [9] hypomere and do not have the position of bypass channel, oil hydraulic cylinder [9] damping function strengthened, and eccentric-butterfly-valve [1] is slowly closed.Because water pump cuts out, valve inlet hydraulic pressure descends rapidly, hydraulic control valve plunger [41] moves up under the effect of spring force, plunger [41] resets, hydraulic control valve [16] cuts out, at this moment, the hydraulic oil of oil hydraulic cylinder [9] hypomere flows back to the oil hydraulic cylinder epimere through return tube [17] and non-return modulating valve [28], and the butterfly type hydraulic control water pump slow shut-in time of valve is controlled by non-return modulating valve [28] fully.By regulating non-return modulating valve [28] 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 hinged with bearing [2], the piston rod of oil hydraulic cylinder [18] is connected with bearing pin with rocking arm [4], oil hydraulic cylinder has bypass channel in [9], it is characterized in that on oil hydraulic cylinder [9], being equipped with return tube [17], return tube [17] is connected to hydraulic control valve [16], and hydraulic control valve [16] one ends are communicated with eccentric-butterfly-valve [1] import through hydraulic diaphragm box and pipeline [14].

2, butterfly hydraulic control water pump valve according to claim 1, it is characterized in that also being equipped with on the hydraulic control valve [16] non-return modulating valve [28], the import and export passage of non-return modulating valve is imported and exported channel connection with the hydraulic oil of hydraulic control valve [16] respectively, non-return modulating valve [28] front end has shrinkage pool, there is seal ring [29] at the middle part of valve, spring [31], pressure ring [32], ball sealer [33] are housed in the shrinkage pool successively, ball sealer [33] aligns the oil inlet passage position, equalizing orifice [30] is arranged on the shrinkage pool, and locking nut [34] is arranged.