CN204226172U

CN204226172U - Butterfly liquid control water pump valve

Info

Publication number: CN204226172U
Application number: CN201320554222.9U
Authority: CN
Inventors: 叶剑光
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-27
Filing date: 2013-09-03
Publication date: 2015-03-25
Anticipated expiration: 2023-09-03

Abstract

A kind of butterfly liquid control water pump valve, comprise eccentric-butterfly-valve [1], oil hydraulic cylinder [9], oil hydraulic cylinder support [2], hydraulic control valve [17], valve shaft [3] one end is stretched out outside valve body and rocking arm [4] connects together, the rocking arm the other end is ined succession the piston rod [19] of oil hydraulic cylinder [9], oil hydraulic cylinder support [2] is arranged on valve body, oil hydraulic cylinder [9] hangs on support [2] by hinging supporting shaft [8], oil hydraulic cylinder [9] is circumscribed with return tube [18] in two ends up and down, return tube [18] is connected to hydraulic control valve [17], hydraulic control valve [17] one end is [15] and eccentric-butterfly-valve [1] inlet communication by the road, adjustable check valve [10] oil-return groove passage in oil hydraulic cylinder [9] is equipped with.By the control of hydraulic control valve and adjustable check valve, when can realize starting mode of pump, liquid control water pump valve is in closed condition, terminate when starting, water pump close to rated speed time, liquid control water pump valve is first slowly opened and then opens fast; During termination of pumping, liquid control water pump valve first closes precalculated position fast, and then slowly closing, reduces the impact of water hammer; Overall process automatically meets water pump operation requirement.

Description

Butterfly liquid control water pump valve

Technical field

The utility model relates to a kind of device controlling flow of fluid, particularly a kind of butterfly hydraulic control valve for being arranged on exit of pump pipeline.

Background technique

There is multiple control valve for water pump in the market, its basic principle is all the hydraulic pressure imported and exported by valve, diaphragm in valve diaphragm control room or piston control room or piston are moved up and down, drives the valve rod be fixed on diaphragm or piston to move up and down, thus valve plate is opened and closed.This technology can realize valve and automatically slowly open, namely when starting mode of pump with regard to valve opening, and first fast close when closing and then close slowly.But realize the non-loaded startup of water pump, be namely in closed condition at starting mode of pump all the time to rated pressure early gate, still will be realized by the valve controlling room and valve export connecting tube on diaphragm control room artificially.This kind of valve owing to will arrive on-the-spot switch valve, or realizes telecontrol by increasing solenoid valve, all cumbersome, so be all that bringing onto load starts when reality uses.And this valve body is long-pending large, flow resistance is high, acquisition cost and operating cost all higher.

Summary of the invention

The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, and when providing one to realize starting mode of pump, valve is in closed condition, and starting mode of pump terminates, close to opening when reaching rated pressure; During termination of pumping, valve first closes precalculated position fast, and then slowly closing, reduces a kind of butterfly hydraulic control valve of impact of water hammer.

The utility model valve is achieved by the following technical measures: a kind of butterfly liquid control water pump valve, comprise eccentric-butterfly-valve, be laid in the bearing of oil hydraulic cylinder outside eccentric-butterfly-valve and oil hydraulic cylinder, bearing is fixed on eccentric-butterfly-valve, oil hydraulic cylinder is connected with bearing hinging supporting shaft, the piston rod of oil hydraulic cylinder and rocking arm pinned connection, the other end of rocking arm is connected with valve shaft flat key; Have oil-return groove passage and bypass channel in oil hydraulic cylinder, in oil hydraulic cylinder upper and lower covers, return tube is housed, return tube is connected to hydraulic control valve; Hydraulic control valve upper end by the road with eccentric-butterfly-valve inlet communication; The epimere of hydraulic control valve has barrier film, is piston and piston rod under barrier film, is the controllable check valve with pilot valve under piston rod.Drainback passage in oil hydraulic cylinder is equipped with adjustable check valve, by adjusting nut, the gap that adjustable safety check flap is opened, thus the speed controlling butterfly liquid control water pump valve slowly closing.

Have lining in oil hydraulic cylinder, the upper stage casing of lining has bypass channel, and piston can move freely in this section, and the hypomere in oil hydraulic cylinder has the oil-return groove being communicated with bypass channel.

The utility model is reasonable in design, and when can realize starting mode of pump, liquid control water pump valve is in closed condition, and starting mode of pump terminates, liquid control water pump valve is first slowly opened to precalculated position and then opens fast, makes water pump smooth running; During termination of pumping, liquid control water pump valve first fast closes precalculated position, and then slowly closing, eliminates the impact of water hammer to valve and water pump.And volume is little, lightweight, flow resistance is low, effectively can reduce the power consumption of acquisition cost and water pump.

Accompanying drawing explanation

Fig. 1 is the structural drawing of this patent;

Fig. 2 is the structural drawing of the oil hydraulic cylinder of this patent;

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

Fig. 4 is the sectional view after the part B of Fig. 2 is amplified;

Fig. 5 is the structural drawing of the hydraulic control valve of this patent.

Embodiment

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

Return tube [18] is housed outside oil hydraulic cylinder [9], return tube [18] is connected to stop valve [6] and hydraulic control valve [17], hydraulic control valve [17] upper end is [15] and eccentric-butterfly-valve [1] inlet communication by the road, 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 the upper and lower cover plate [7] of oil hydraulic cylinder [9], [11] respectively, are connected by upper for oil hydraulic cylinder [9] lower inner cavity by hydraulic control valve [17].

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

With reference to Fig. 4, adjustable check valve [10] is arranged on 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 lower cover plate [11] spool [30] outer end, spool [30] front end is provided with shrinkage pool [33], there is seal ring [31] at the middle part of spool [30], shrinkage pool [33] is inner is equipped with spring [32], ball sealer [34] successively, and ball sealer [34] aligns spill port [29] position.Shrinkage pool [33] has breach [35], the hydraulic oil of such oil hydraulic cylinder is when drainback passage flows, can only through spill port [29], adjustable check valve [10], circular groove [28], oil-return groove [24] circulation, otherwise but can not, play non-return effect.By regulating spool [30] adjustable oil return speed, the speed regulating valve plate slow closure can be realized,

With reference to Fig. 5 display be hydraulic control valve [17] and structural drawing, the epimere of hydraulic control valve is piston chamber and piston [41], there is diaphragm of rubber [45] between piston chamber and piston cap, stage casing is the band safety check [42] of pilot valve, hypomere is spring [38].The piston of hydraulic control valve epimere is under the effect of fluid pressure, and piston rod can move downward the spool backing down safety check.

The utility model Valve controlling process is as follows:

Control during starting mode of pump: now eccentric-butterfly-valve [1] is in closed condition.Starting mode of pump makes the fluid pressure of eccentric-butterfly-valve [1] import increase, fluid pressure through filter [13], modulating valve [14], diaphragm of rubber [45], act on the piston [41] of hydraulic control valve, when the pressure that piston is subject to is less than the fluid pressure in spring [38] elastic force of hydraulic control valve [17] and safety check, hydraulic control valve is in closed condition, piston rod [19] cannot move, valve plate is lockable, and eccentric-butterfly-valve [1] can not be opened.When starting mode of pump terminates, close to when reaching rated pressure, when the piston force of hydraulic control valve is greater than the hydraulic pressure in spring [38] elastic force of [17] and safety check, safety check is opened, now on oil hydraulic cylinder room oil along connection stop valve [6], the pipeline [18] of hydraulic control valve [17] flows back to room under oil hydraulic cylinder, piston rod [19] 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 valve inlet fluid pressure, rotate up and open, eccentric-butterfly-valve [1] is opened, when piston rod [19] moving to bypass channel [26] position, hydraulic oil is by 4 bypass channel backflows, damping function reduces, piston rod [19] can fast on move, valve is first opened slowly to open soon afterwards.

Control when water pump cuts out: now eccentric-butterfly-valve [1] is in opening state.When water pump cuts out, under the fluid pressure effect of pipe network, liquid starts backflow, the pressure that now eccentric-butterfly-valve [1] exports is greater than the pressure of import, valve plate starts rotary closure under the effect of self gravitation and fluid pressure, lining [25] position, middle and upper part due to oil hydraulic cylinder [19] has four bypass channels [26], so damping function is very little, and eccentric-butterfly-valve [1] quick closedown.When piston moves to the position of oil hydraulic cylinder [19] hypomere without bypass channel, oil hydraulic cylinder [19] damping function strengthens, eccentric-butterfly-valve [1] slowly closing.Because water pump closedown, valve inlet hydraulic pressure decline rapidly, the piston force in hydraulic control valve also declines rapidly, and the spool of the safety check in hydraulic control valve moves up under spring force, makes closure of check ring, and namely hydraulic control valve [17] cuts out.The butterfly liquid control water pump valve slowly closing time is controlled by the adjustable check valve [10] in hydraulic cylinder completely.By regulating adjustable check valve [10] can the speed of hydraulic control oil backflow, thus controlling the time of butterfly liquid control water pump valve slowly closing, eliminating the impact of water hammer to valve and water pump.

Claims

1. a butterfly liquid control water pump valve, comprise eccentric-butterfly-valve [1], be laid in the bearing [2] of oil hydraulic cylinder [9] outside eccentric-butterfly-valve and oil hydraulic cylinder, bearing [2] is fixed on eccentric-butterfly-valve [1], oil hydraulic cylinder [9] is connected with bearing [2] hinging supporting shaft, piston rod [19] and rocking arm [4] pinned connection of oil hydraulic cylinder, oil hydraulic cylinder has oil-return groove passage and bypass channel in [9], in oil hydraulic cylinder [9] upper and lower covers, return tube [18] is housed, return tube [18] is connected to hydraulic control valve [17], hydraulic control valve [17] upper end is [15] and eccentric-butterfly-valve [1] inlet communication by the road, adjustable check valve [10] oil-return groove passage in oil hydraulic cylinder [9] is equipped with, pass through adjusting nut, the gap that adjustable safety check flap is opened, the epimere of hydraulic control valve [17] has barrier film, piston and piston rod under barrier film, it is the controllable check valve [42] with pilot valve under piston rod.