CN2216611Y

CN2216611Y - Double site type circulating switching valve

Info

Publication number: CN2216611Y
Application number: CN 94246469
Authority: CN
Inventors: 吕学忠; 萧朝兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-09
Filing date: 1994-12-09
Publication date: 1996-01-03
Anticipated expiration: 2004-12-09

Abstract

The utility model relates to a double-position-typed circulating instant switching valve, comprising a valve body, a valve plug, a yaw component, a biasing mechanism, a sliding component, a pushing rod, and a regulating component. The yaw component is provided with two yaw bevels which are connected, and the connecting position is formed with a directional ridge which leans to one side or the other side as subjected to the biasing action of the biasing mechanism; the pushing rod slides into along one yaw surface in one action and pushes the yaw component from one side to the other side, and pushes the yaw component back to the original side along the other yaw surface in the next action. The operator can complete the left and the right circulating switching by operating the yaw component each time, and accordingly, the valve plug can carry out the circulating switching of the opening and the close.

Description

Double site type circulation moment switching valve

The utility model relates to a kind of innovation of pneumatic control valve, refers to a kind of double site type circulation moment switching valve especially.

It is that employing is Pneumatic pressure operated that many manufacturing mechanisms are arranged in the manufacturing firm at present, and these air pressure manufacturing mechanisms mostly are to touch pneumatic control valve by operator with hand, leg or pin, so that control air pressure manufacturing mechanism produces the production action of expection, and above-mentioned pneumatic control valve all is just to begin to connect gas circuit when being touched, make the action of air pressure manufacturing mechanism, but when operator's hand, leg or pin leaves or loosens the pneumatic control valve that is pressed, this pneumatic control valve just utilizes the elastic restoring force of spring to recover turnoff state, and there is following shortcoming in this traditional pneumatic control valve:

1, continue for some time as the access time of desiring to make pneumatic control valve or when more of a specified duration, operator's hand, leg or pin must continue to keep pressing state, this is easy to make operator's fatigue.

2, because operator's hand, leg or pin can't be vacated, therefore can't make full use of hand, leg, pin etc. carries out other operation.

Because the above-mentioned shortcoming of existing pneumatic control valve, main purpose of the present utility model is to provide a kind of double site type circulation moment switching valve, and it has following function:

1, the operator is as long as (moment) touches switching valve, switching valve switches to closed circuit state (or switch to open-circuit condition by closed circuit state) by open-circuit condition immediately, operator's hand, leg or pin can be backed out, switching valve can continue to keep closed circuit state (or open-circuit condition), till be touched next time once again.

No matter 2 to desire to make switching valve to be switched to by open circuit closed circuit, or by the closed circuit open circuit that switches to, the shake-up direction that the operator touches switching valve is " in the same way ".

Detailed structure of the present utility model is illustrated in conjunction with the embodiments.

Plan view when Fig. 1 is open-circuit condition for the utility model switching valve.

Fig. 2 is the sectional drawing at position shown in the cutting surface 2-2 among Fig. 1.

Fig. 3 is the sectional drawing at position shown in the cutting surface 3-3 among Fig. 1.

Fig. 4 is the sectional drawing at position shown in the cutting surface 4-4 among Fig. 2.

Plan view when Fig. 5 is closed circuit state for switching valve of the present utility model.

Sectional view when Fig. 6 is closed circuit state for switching valve of the present utility model.

See also Fig. 1-4, the utility model double site type circulation moment switching valve 10 comprises: main members such as valve body 11, valve plug 2, moving partially member 13, one group of bias mechanism 14, slide member 15, push rod 16 and an adjustment member 48.

Above-mentioned valve body 11 has a valve opening 18 and three

valve ports

19,20,21, wherein these

valve ports

19,20,21 all communicate (as shown in Figure 4) with above-mentioned valve opening 18 separately, and these

valve ports

19,20,21 can be loaded onto the tracheae (not shown) separately, so that join with the pneumatic circuit beyond the valve body 11, above-mentioned valve body 11 also is equipped with a track 22.

Above-mentioned valve plug 12 is provided in a side of valve body, in 1 the valve opening 18, and can move to the primary importance (as shown in Figure 4) or the second place (as shown in Figure 6) along valve opening 18, to change the connected state of 19,20,2 of valve ports; Above-mentioned valve plug 12 is equipped with one and is driven portion 23;

Above-mentioned moving partially member 13 is divided into first position and second position, and wherein first position has drive portion 24, and this drive portion 24 is to be connected with the portion that is driven 23 of valve plug 12; Second position of moving partially member 13 is to borrow pivot 25 to be hubbed on valve body 11 places, second position that should move member 13 partially also has moving partially portion 28 of the first moving partially portion 27 and second, wherein the first moving partially portion 27 and the second moving partially portion 28 link to each other and form at continuous position and divide to mountain range 29, and first moves portion 27 and second partially and move the both sides that portion 28 lays respectively at track 22 lines of centres 30 of above-mentioned pivot 25 and valve body 11 partially.

Above-mentioned bias mechanism 14 is slide member 15 bottoms that are arranged at push rod 16 belows, and it comprises: a bias voltage push rod 32 and a biasing spring 33; Wherein to have beveled tip 44 are the taper holes 45 that contact in above-mentioned moving partially member 13 to bias voltage push rod 32, biasing spring 33 is a helical spring, and be set on bias voltage push rod 32 outer rims, this biasing spring 33 has the first end 33a and the second end 33b, wherein the first end 33a acts on above-mentioned slide member 15, and the second end 33b acts on beveled tip 44 bottoms of above-mentioned bias voltage push rod 32, this bias mechanism 14 can make above-mentioned biasing member 13 perseverances remain on the 3rd position (as shown in Figure 1) or the 4th position (as shown in Figure 5), and the branch that makes partially moving member 13 keeps departing from the above-mentioned line of centres 30 one of them to mountain range 29, and then makes above-mentioned valve plug 12 remain on the primary importance of valve body 11 (as shown in Figure 4) or the second place (as shown in Figure 6).

See also shown in Fig. 1,2, above-mentioned push rod 16 has the first end 16a and the second end 16b, wherein the first end 16a of this push rod 15 borrows pivot 32 to be located on the slide member 15, horizontal pivot joint one pulley 16c in the second end 16b of this push rod 16, outside this pulley 16c edge slidably migration in first 27, the second moving partially portion 28 of moving partially portion, divide to the mountain range 29, and select to move portion 27 or second partially and move portion 28 partially and contact with above-mentioned first of the member 13 that moves partially.

Consult Fig. 1,2,4 again, above-mentioned slide member 15 is located in the track 22 of above-mentioned valve body 11, and this slide member 15 can move back and forth along above-mentioned track 22.

Consult Fig. 3,4, above-mentioned adjustment member 48 recovers springs 50 by an adjustment push rod 49 sheathed to be formed, and this adjustment member 48 is provided in a side of the tail end of valve plug 12, so as to portion that is driven 23 that adjusts valve plug 12 and the flexibility ratio of moving the drive portion 24 of member 13 partially.

See also Fig. 2, when riding the utility model, above valve body 11, borrow pivot 40 pedal 41 that is pivoted, when pedal 41 persons of being operated stepped on, pedal 41 was that rotate at the center with pivot 40, borrows pivot 42 when compressing and is hubbed on the roller 43 of slide member 15, promoting above-mentioned slide member 15 by roller 43 moves to right-hand, then consult Fig. 1 again,, by roller 43 slide member 15 is being prolonged track 22 and moving right when the operator pushes down on the pedal 41 the time.In moving process, because

push rod

16 and 11 of valve bodies have certain friction, add upper push-rod 16 and move, so push rod 16 do not touching when moving member 13 partially as substantially horizontal, be can not be partial to and can remain on the neutral position.Because moving partially member 13 is subjected to the effect of bias mechanism 14, therefore the branch of moving partially member 13 is not the upside of the deflection line of centres 30 to mountain range 29, be partial to the downside of the line of centres 30 exactly, thereby, behind the close moving partially member 13 of the second end 16b of push rod 16, its pulley 16c will inevitably run into the second moving partially portion 28 of moving partially member 13, change to as shown in Figure 5 the second place and will move member 13 partially by primary importance shown in Figure 1, the branch of moving partially member 13 also forwards the below of the line of centres 30 to from the top of the line of centres 30 to mountain range 29 simultaneously, and utilize bias mechanism 14 to make moving partially member 13 remain on the second place shown in Figure 5, after the operator loosens or decontrols pedal 41, push rod 16 is got back to the left position under the elastic restoring force effect of spring 33, pedal 41 also goes back up to original position under the elastic restoring force effect of spring 47 simultaneously, as shown in Figure 5, when the operator pushes down on the pedal after 41 once again, push rod 16 moves and touches the first moving partially portion 27 of partially moving member 13 too along the line of centres 30, become move member 13 partially into as shown in Figure 1 primary importance by the second place shown in Figure 5.

Therefore, when the operator whenever tramples pedal 41 one time, move member 13 partially and just change the position one time, operator's pin is done trampling of " in the same way ", and is the action of finishing switching in " moment ".Therefore moving partially member 13 is just done the action that circulation is switched.

When inclined to one side actuation mechanism 13 is about the center when moving partially with pivot 25, to make valve plug 12 be moved to the left to the 3rd position by the portion that is driven 23 that its drive portion 24 drives valve plug 12, or the 4th position that moves right, when valve plug 12 moves right (as shown in Figure 4),

valve port

19,20 is connected; And when valve plug 12 is moved to the left (as shown in Figure 6),

valve port

20,21 is connected, therefore can finish the action of switching, also because moving partially member 13 is subjected to the bias voltage of bias mechanism 14 as shown in Figure 1, no matter this can make valve plug 12 is on the left side position or location right, all can stably remain on this position.

When the portion that is driven 23 of valve plug 12 and the action of the drive portion 24 of actuation mechanism 13 partially, in the time of can occurring driving inflexible situation for a long time unavoidably, need this moment to utilize the adjustment push rod 49 of adjusting member 48 to promote valve plug 12, make the state of 24 of portion of being driven 23 and drive portions become mitigation and flexibly, utilize the elastic restoring force of recovering springs 50 to return on the original position and adjust push rod 49.

Compared with prior art, the utlity model has following advantage:

1, the operator is as long as " moment " touches transfer valve of the present utility model, transfer valve Switch to closed circuit state by open-circuit condition immediately, operator's hand, leg or pin can be backed out, Transfer valve can continue to keep closed circuit state, until again be touched, easy to operate, Flexibly, indefatigability. The operator keeps closing such as need when using traditional pneumatic control valve Line state just must be pressed constantly and be touched the Air Valve Control valve, and is not only easily tired, and presses and touch In hand, leg or pin can't vacate, the operation on easily in a rush.

No matter 2 to want to make transfer valve of the present utility model to be switched to by open circuit closed circuit, or by The closed circuit open circuit that switches to, the shake-up direction that the operator touches transfer valve all is " in the same way ".

Claims

1, a kind of double site type circulation moment switching valve is characterized in that it comprises a valve body, and this valve body has:

A valve opening;

At least two valve ports, these valve ports communicate with described valve opening, and join with described valve body pneumatic circuit in addition separately;

, a track;

One valve plug, this valve plug is located in the valve opening of described valve body, and can move to the primary importance or the second place along described valve opening, to change the connected state between described valve port;

Described valve plug has one and is driven portion;

A moving partially member, should have first position and second position by moving partially member, wherein first position is provided with drive portion, this drive portion is connected with the portion of being driven of described valve plug, second position that wherein should move member partially is hubbed on the valve body place, and formation is pivoted a little, second position that should move member partially also is provided with moving partially portion of the first moving partially portion and second, wherein the first moving partially portion and the second moving partially portion link to each other and form branch to the mountain range at continuous position, and first moves portion and second partially and move portion partially and be positioned at the described both sides of setting up an office with the track center line of valve body of driving respectively;

A slide member, this slide member is located in the track of described valve body, and this slide member can move back and forth along this track;

A push rod, this push rod have first end and second end, and wherein first end is to be hubbed on described slide member, and second end can be selected to contact with the moving partially portion of the first moving partially portion or second of described moving partially member;

One group of bias mechanism, system is arranged at the slide member bottom of push rod below, make described moving partially member perseverance remain on the 3rd position or the 4th position, and the branch that makes described moving partially member keeps departing from a wherein side at the described line of centres to the mountain range, and then make valve plug remain on the primary importance or the second place of this valve body, when described push rod does not touch partially moving member, second end of this push rod is remained on be pivoted a little on the line with track center;

One adjusts member, and this adjustments member is located at described valve plug tail end, is to adjust pushing rod sleeve unification recovery spring with one, is used to adjust drive portion and is driven flexibility ratio between portion.

2, double site type circulation moment switching valve according to claim 1, it is characterized in that described bias mechanism comprises: a bias voltage push rod, this bias voltage push rod has first end and second end, wherein first end is to contact described moving partially member, second end then touches described valve body slidably, and making first end of this bias voltage push rod is the deflection of the deflection center left and right sides with its second end; A biasing spring, this biasing spring is a helical spring, and is set on the outer rim of described bias voltage push rod, and this biasing spring has first end and second end, and wherein first end acts on the described valve body, and second end then acts on first end of described bias voltage push rod.