The model utility content
The utility model primary technical problem to be solved is that the present situation to existing technology provides a kind of and can make piston do variable motion, reduces the multifunction valve that piston impacts strength, increases the service life cylinder end caps.
The utility model another technical problem to be solved is that the present situation to existing technology provides a kind of and can make piston do variable motion, reduces piston cylinder end caps is impacted strength, increased the service life, is fit to the combination brake switch and proporting that a plurality of piston/cylinders use.
The technological scheme that the above-mentioned primary technical problem that solves the utility model adopts is: a kind of multifunction valve; It includes valve body; Be arranged on valve pocket and the valve rod that is arranged in the valve pocket in the said valve body; Said valve body simultaneously is provided with middle import that the voltage supply power media gets into and voltage supply power media and selects the left import, the right import that get into, and the valve body another side is provided with left side outlet, the right outlet that the voltage supply power media is discharged, through the cooperation of said valve pocket valve rod; Said left import is communicated with left side outlet, right import and right outlet are optionally corresponding; It is characterized in that: said left import, right import and part the chamber on the left side, part that the chamber is corresponding to be communicated with on the right side, and accordingly, part the chamber on the left side, part on the right side the chamber respectively through throttle valve and left side outlet separately, right outlet is corresponding is communicated with.
The utility model solves the technological scheme that above-mentioned another technical problem adopted: a kind of combination brake switch and proporting is characterized in that:
Comprise a multifunction valve; It includes valve body, is arranged on valve pocket and the valve rod that is arranged in the valve pocket in the said valve body, and said valve body simultaneously is provided with the middle import of voltage supply power media entering and left import, the right import that the selection of voltage supply power media gets into; And the valve body another side is provided with left side outlet, right outlet that the voltage supply power media is discharged; Through the cooperation of said valve pocket valve rod, said left import is communicated with left side outlet, right import and right outlet are optionally corresponding, it is characterized in that: said left import, right import and part the chamber on the left side, part that the chamber is corresponding to be communicated with on the right side; And accordingly, part the chamber on the left side, part on the right side the chamber respectively through throttle valve separately and left side outlet, right outlet is corresponding is communicated with;
At least more than one handles selector valve;
An and collecting plate;
Make the Zuo Kou that handles selector valve one side, right mouth connect the left chamber of piston cylinder, right chamber respectively, and left refluxing opening, middle import and the right refluxing opening of manipulation selector valve another side connect left runner, intermediate flow channel and the right runner of collecting plate respectively;
The left import of multifunction valve, middle import and right import connect left runner, intermediate flow channel and the right runner of collecting plate respectively.
As preferably, described throttle valve is the adjustable restrictive valve of can regulate flow size.
As improvement; Described adjustable restrictive valve is that valve body is provided with the taper valve core valve pocket; Taper valve core valve pocket bottom has through hole and branch chamber to be communicated with; Taper valve core is to be threaded in the said taper valve core valve pocket, and taper valve core and through hole are cooperated, and also is provided with the effluent hole that is communicated with outlet and taper valve core valve pocket on the said valve body.
As improvement, described valve rod is divided into left valve rod, right valve rod, is provided with the elastic component that left and right valve rod moves dorsad between left valve rod, the right valve rod.
As improvement; Be interval with the sealed department that four inner circle walls with said valve pocket are sealed and matched on the described valve rod perisporium; Thereby these four sealed departments change separately with the motion of said valve rod and the described left import of cooperation position selectively changing of said valve pocket, right import and the outlet of a said left side, right outlet between connected relation, and the inner circle wall of two sealed departments in four sealed department neutral positions and said valve pocket be in normally off so that the outlet of a described left side with right export isolated all the time.
At last, described valve rod one end connection solenoid valve or pneumatic valve or hydrovalve or manually operated valve or mechanical valve are as the external force driving source.
Compared with prior art, the utility model is through the design of adjustable restrictive valve, makes piston motion when soon touching the end of piston cylinder, reduces the capacity of reflux of pressure medium; Increase the resistance of piston motion, thereby slow down the movement rate of piston, make piston slowly touch the end of piston cylinder; To the gouging abrasion of piston rod, effectively prolong the working life of piston cylinder when having avoided piston to move rapidly, guaranteed the safety in operation and the stability of piston cylinder simultaneously; The combination brake switch and proporting design is adopted in practicality rational in infrastructure, realizes modular construction; Integrated with multifunction valve, be fit to use on a plurality of cylinder bodies, easy to use wide more and make things convenient for.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 1; This multifunction valve 10 includes valve body 1, has valve pocket 2 in the valve body, and a valve rod 3 is installed in the valve pocket 2; Wherein state valve body 1 one side and be provided with left import 1.1a, the right import 1.3a that middle import 1.2a that the voltage supply power media gets into and voltage supply power media are selected entering; Valve body 1 another side is provided with left side outlet 1.1b, the right outlet 1.3b that the voltage supply power media is discharged: the chamber 1.4 that parts on the left side in said left import 1.1a and the valve pocket 2 is communicated with, and the chamber 1.5 that parts on the right side in right import 1.3a and the valve pocket 2 is communicated with; Part chamber 1.4 on the left side and be communicated with left side outlet 1.1b, part chamber 1.5 on the right side and be communicated with right outlet 1.3b through throttle valve 1.7 through throttle valve 1.6.
Throttle valve 1.6 is adjustable restrictive valves of can regulate flow size; Be respectively equipped with taper valve core valve pocket 1.61 on the valve body 1; There is through hole taper valve core valve pocket 1.61 bottoms and parts chamber 1.4 connections on the left side; Taper valve core 1.62 is to be threaded in the said taper valve core valve pocket 1.61, taper valve core 1.62 is cooperated with through hole 1.63 realize Flow-rate adjustment, also is provided with the effluent hole 1.64 that is communicated with left side outlet 1.1b and taper valve core valve pocket 1.61 on the said valve body.Equally, throttle valve 1.7 also adopts a spline structure.
Present embodiment adopts whole valve rod 3; Be interval with the sealed department 3.1,3.2,3.3,3.4 that four inner circle walls with said valve pocket 2 are sealed and matched on valve rod 3 perisporiums; Each sealed department is provided with seal ring; Thereby these four sealed departments, 3.1,3.2,3.3,3.4 motions with said valve rod 3 change separately and the described left import of cooperation position selectively changing of said valve pocket 2, right import and the outlet of a said left side, right outlet between connected relation, and the inner circle wall of two sealed departments 3.2,3.3 in four sealed department neutral positions and said valve pocket 2 is in normally off so that described left side outlet 1.1b and the right 1.3b of outlet are isolated all the time, like this; Import 1.1a in a left side directly is communicated with left side outlet 1.1b through valve pocket 2; Perhaps, left import 1.1a also need pass through throttle valve 1.6 and be communicated with left side outlet 1.1b through valve pocket 2; And right import 1.3a directly is communicated with right outlet 1.3b through valve pocket 2, and perhaps, right import 1.3a also need pass through throttle valve 1.7 and be communicated with right outlet 1.3b through valve pocket 2.
Valve rod 3 one ends connect solenoid valve 4, and solenoid valve 4 promotes valve rod about 3 actions, through the cooperation of said valve pocket 2 and valve rod 3, said left import are communicated with left side outlet, right import and right outlet are optionally corresponding.
Embodiment 2
As shown in Figure 2, in present embodiment, valve rod 3 is divided into left valve rod 3.a, right valve rod 3.b, is provided with the elastic component 5 that left and right valve rod moves dorsad between left valve rod 3.a, the right valve rod 3.b, and other are similar the same with examples of implementation.
Embodiment 3
As shown in Figure 3, a kind of combination brake switch and proporting or valve island, it comprises the multifunction valve 10 in embodiment 1 or 2, concrete structure is seen description among the embodiment 1, no longer repeats here to describe;
Three manipulation selector valves 20;
An and collecting plate 30;
The left chamber 40.1, the right chamber 40.2 that make a left side mouthful 20.1b of manipulation selector valve 20 1 sides, right mouthful 20.3b connect piston cylinder 40 respectively, and left refluxing opening 20.1a, middle import 20.2a and the right refluxing opening 20.3a of manipulation selector valve 20 another sides connect left runner 30.1, intermediate flow channel 30.2 and the right runner 30.3 of collecting plate 30 respectively;
The left import 1.1a of multifunction valve 10, middle import 1.2a and right import 1.3a connect left runner 30.1, intermediate flow channel 30.2 and the right runner 30.3 of collecting plate 30 respectively;
Collecting plate 30 intermediate flow channel 30.2 connect the working medium source, and other runner holes of its both ends of the surface are blocked with sealing cover;
Three manipulation selector valves 20 can connect three piston cylinders respectively, control each piston cylinder and carry out work, see Fig. 4.
Its working principle and process are following:
1) goes journey working state (valve rod of multifunction valve is the whole example that is)
See Fig. 4; The valve rod of handling selector valve 20 moves right (valve rod 3 of solenoid valve 4 promotion multifunction valves moves simultaneously) to the right; The middle import 20.2a that handles selector valve 20 is communicated with a left side mouthful 20.1b, and right mouthful 20.3b and right refluxing opening 20.3a are communicated with, the fluid in working medium source is through the intermediate flow channel 30.2 of collecting plate 30 like this; Get into the left chamber 40.1 of piston cylinder 40 more successively through middle import 20.2a, a left side mouthful 20.1b; The working medium fluid passes through right refluxing opening 20.3a again through right mouthful 20.3b in the right chamber 40.2 of piston cylinder 40, enters into the right runner 30.3 of collecting plate 30;
Move to the right because solenoid valve 4 promotes valve rod 3, the right import 1.3a of multifunction valve and right outlet 1.3b are communicated with, left import 1.1a and left side outlet 1.1b are communicated with; Like this; The working medium fluid is discharged with right outlet 1.3b through the right import 1.3a of multifunction valve successively in the right runner 30.3 of collecting plate 30, because the bore of these several passages is all bigger, flow is big relatively; Therefore the fluid of pressure medium enters into the piston cylinder chamber with fast speeds, the piston rapid movement;
See Fig. 5-6, when piston motion to position shown in Figure 5 during promptly near the top of piston cylinder, the valve rod 3 that solenoid valve 4 promotes multifunction valves move left (generally be through time control perhaps Stroke Control start); Make the right import 1.3a and right its direct connection of outlet 1.3b blocking-up of multifunction valve, left import 1.1a and its direct connection of left side outlet 1.1b blocking-up, right import 1.3a is through valve pocket 2; Also need pass through throttle valve 1.7 is communicated with right outlet 1.3b; Because the bore of throttle valve 1.7 is little, resistance is big, so the fluid of pressure medium can not be discharged from the piston cylinder chamber through multifunction valve with fast speeds; Increased the resistance to motion of piston; Thereby slow down the movement rate of piston, make piston touch the top of piston cylinder lentamente, when having avoided piston to move rapidly to the gouging abrasion of piston; Effectively prolong the working life of piston cylinder, guaranteed the safety in operation and the stability of piston cylinder simultaneously;
2) backhaul working state (valve rod of multifunction valve is that non-integral is an example)
See that Fig. 7 (has omitted collecting plate; It is provided with the front is the same), the valve rod of handling selector valve 20 makes the middle import 20.2a and right mouthful of 20.3b connection that handle selector valve 20 to left movement (the left and right valve rod 3 of solenoid valve 4 promotion multifunction valves is respectively to left and right action simultaneously); And a left side mouthful 20.1b and left refluxing opening 20.1a are communicated with; The fluid in working medium source gets into the right chamber 40.2 of piston cylinder 40 more successively through the intermediate flow channel 30.2 of collecting plate 30 through middle import 20.2a, right mouthful 20.3b like this, and the working medium fluid is through a left side mouthful 20.1b in the left chamber 40.1 of piston cylinder 40; Pass through left refluxing opening 20.1a again, enter into the left runner 30.1 of collecting plate 30;
Because promoting left valve rod 3.a, solenoid valve 4 moves left; Right valve rod 3.b moves to the right, and the right import 1.3a of multifunction valve and right outlet 1.3b are communicated with, and left import 1.1a and left side outlet 1.1b are communicated with; Like this; The working medium fluid is discharged with left side outlet 1.1b through the left import 1.1a of multifunction valve successively in the left runner 30.1 of collecting plate 30, because the bore of these several passages is all bigger, flow is big relatively; Therefore the fluid of pressure medium enters into the piston cylinder chamber with fast speeds, the piston rapid movement;
See Fig. 8-9, when piston motion to position shown in Figure 8 during promptly near the top of piston cylinder, the left valve rod 3.a that solenoid valve 4 promotes multifunction valves moves (generally being to control through time control or Stroke Control or other to start) to the right; Make the left import 1.1a and its direct connection of left side outlet 1.1b blocking-up of multifunction valve; Import 1.1a in a left side also need pass through throttle valve 1.6 and be communicated with left side outlet 1.1b, because the bore of throttle valve 1.6 is little through valve pocket 2; Resistance is big; Therefore the fluid of pressure medium can not be discharged from the piston cylinder chamber through multifunction valve with fast speeds, has increased the resistance to motion of piston, thereby has slowed down the movement rate of piston; Make piston touch the top of piston cylinder lentamente; To the gouging abrasion of piston, effectively prolong the working life of piston cylinder when having avoided piston to move rapidly, guaranteed the safety in operation and the stability of piston cylinder simultaneously.