CN201363478Y

CN201363478Y - Valve operating mechanism

Info

Publication number: CN201363478Y
Application number: CNU2009201131156U
Authority: CN
Inventors: 卓曙光; 李建忠; 叶展磊
Original assignee: ZHEJIANG OUSITE VAVLE CO Ltd
Current assignee: ZHEJIANG OUSITE VAVLE CO Ltd
Priority date: 2009-01-19
Filing date: 2009-01-19
Publication date: 2009-12-16
Anticipated expiration: 2019-01-19

Abstract

The utility model relates to a valve operating mechanism, which comprises a bracket, a hand wheel, a guide rod and a guide sleeve. The guide sleeve is arranged in the bracket, an axle centre of the guide sleeve is provided with screw holes and upper end of the guide sleeve is coaxially provided with sinkholes, and outer diameter under the sinkholes of the guide sleeve is also provided with an L-shaped guide groove, the bracket is correspondingly provided with a guide pin which is matched with guide rail of the L-shaped guide groove, and a pass groove is arranged on side wall of sinkholes of the guide sleeve, a position-controlling guide column is arranged in the pass groove; a straight groove is arranged on inner hole wall of the bracket, and the width of the straight groove is matched with diameter of the guide column. The straight groove is communicated with upper end of the bracket; the upper end of the guide rod and the hand wheel form a linkage connection, lower end of the guide rod is a step column, small-diameter end is provided with screw threads and a screw rod which are matched with the screw holes and a spiral of the guide sleeve; the side wall of the large-diameter end is provided with a groove, the length and width of the groove are matched with the length and diameter of the guide column; and sum of the depth of the groove and wall thickness of the sinkholes of the guide sleeve is equal to or slightly lager than the diameter of the guide column; sum of the depth of the straight groove and wall thickness of the sinkholes of the guide sleeve is equal to or slightly lager than the diameter of the guide column. The operating mechanism has fast open-close speed and large switch torque.

Description

Valve operating mechanism

Technical field

The utility model relates to a kind of valve, particularly a kind of valve operating mechanism.

Background technique

In some valve, valve is when opening and closing, its spool need be done translation and two actions of rotation, this also just makes valve rod need do axial translation and two actions that rotate in a circumferential direction, drive in the present valve that valve rod is done axial translation and two actions that rotate in a circumferential direction are had plenty of and adopt two cover operating devices to realize, as stopcock as shown in Figure 1, the lifting of its valve rod is that the armrest wheel is realized by screw rod, nut, the rotation of valve rod then is to realize by handle, this structure is its troublesome poeration obviously, effort when lever operated; Adopt a cover operating device to realize and also have at present, as ball valve as shown in Figure 1, this ball valve is described two actions that realize valve rod in the following way: establish a rail slot on valve rod, usually this rail slot is made up of a vertical slots and a spiralling spiral chute, the corresponding pilot pin that is provided with on valve gap, the upper end of valve rod is set as screw shaped and correspondingly cooperates with a nut, this nut is by the handwheel driven rotary, make valve rod displacement vertically during the nut rotation, when pilot pin is arranged in the vertical slots of rail slot, valve rod is rectilinear translation vertically, thereby the cammed surface that makes valve rod promotes the spheroid translation, and when pilot pin is arranged in the spiral chute of rail slot, can make valve rod along this spiral fluted direction action (not only do rotate in a circumferential direction the while but also axial displacement is arranged), thereby drive spheroid and do 90 degree rotations, realize the purpose of commutation.This ball valve speed when carrying out switching motion is slow, need the handwheel a lot of circles of rotation (number of turns of its rotation is the pitch of the axial distance of rail slot divided by screw rod) to realize, efficient is very low, can not reach the purpose that quick closing valve is opened soon, in addition, when pilot pin is in the spiral chute of rail slot, because there is the component that rotating in a circumferential direction is promptly arranged and axial displacement is arranged, according to the component principle of mechanics, the required dynamics of handwheel rotation is bigger.

The model utility content

The purpose of this utility model is to solve the deficiency of above-mentioned valve operating mechanism, and a kind of valve operating mechanism that speed is fast, switch moment is big that opens and closes is provided.

The purpose of this utility model is achieved by the following technical solution: a kind of valve operating mechanism, include support and handwheel, it is characterized in that: also include guide rod, guide pin bushing, described guide pin bushing is placed in the support, the axle center of guide pin bushing is provided with the also coaxial counterbore that is provided with in upper end of screw and guide pin bushing, on the external diameter below the counterbore of guide pin bushing, also be provided with a L shaped guide groove, the corresponding pilot pin that cooperates with this L shaped guide groove guide rail that is provided with on support, on the sidewall of the counterbore of guide pin bushing, also be provided with a groove, be provided with control position guide pillar in the groove, on the inner hole wall of support, also be provided with the suitable straight trough of diameter of a width and guide pillar, this straight trough communicates with the upper end of support, the upper end and the handwheel of described guide rod are connected, the lower end of described guide rod is the step post, its miner diameter end is provided with screw thread formation screw rod and cooperates with the screw spiral of guide pin bushing, its bigger diameter end sidewall is provided with groove, the length of this groove, wide with lead the length of pearl, diameter is suitable, and the wall thickness sum of the degree of depth of this groove and the counterbore of guide pin bushing equals or is slightly larger than the diameter of guide pillar, and the wall thickness sum of the degree of depth of straight trough and the counterbore of guide pin bushing equals or be slightly larger than the diameter of guide pillar.

Preferred version of the present utility model is: the upper/lower terminal of described guide pillar is a sphere.

The utility model is by the handwheel of rotation minority circle, just can realize the axial displacement of valve rod and two actions that rotate in a circumferential direction, thereby the keying speed of valve obtains accelerating, the moment of torsion of its switch of the utility model is also bigger in addition, and operating device of the present utility model can be used for various valves such as ball valve, stopcock, butterfly valve.

Description of drawings

Fig. 1 is the structural representation of existing stopcock

Fig. 2 is the structural representation of existing ball valve

Fig. 3 is the embodiment's of the utility model valve operating mechanism a structural representation

Fig. 4 is the H-H sectional view of Fig. 3

Fig. 5 is another working state schematic representation (being that spheroid is in the rotation shape) of the control position guide pillar among Fig. 4

Fig. 6 is the Q-Q sectional view of Fig. 3

Fig. 7 is that the P place launches schematic representation among Fig. 3

Fig. 8 is the structural representation that is equiped with the stopcock of operating device of the present utility model

Fig. 9 is the structural representation that is equiped with the ball valve of operating device of the present utility model

Embodiment

Now in conjunction with the accompanying drawings mode of execution of the present utility model is further described:

Be illustrated in figure 3 as a kind of embodiment of valve operating mechanism, include support 1, handwheel 4, guide rod 3, guide pin bushing 2, described guide pin bushing 2 is placed in the support 1, fixedly connected with valve rod 7 in the lower end of guide pin bushing 2, the axle center of guide pin bushing 2 is provided with the also coaxial counterbore 23 that is provided with in upper end of screw 21 and guide pin bushing 2, on the external diameter of counterbore below 23 of guide pin bushing 2, also be provided with a L shaped guide groove 22 (by as can be known shown in Figure 7, this L shaped guide groove 22 is meant that having a vertical slots 222 that parallels with the axis of guide pin bushing and horizontal projection expand into a horizontal slot on guide pin bushing transverse groove 221 constitutes), the corresponding pilot pin 5 that cooperates with these L shaped guide groove 22 guide rails that is provided with on support 1, on the sidewall of the counterbore 23 of guide pin bushing 2, also be provided with a groove 24, be provided with control position guide pillar 6 in the groove 24, on the inner hole wall of support 1, also be provided with the suitable straight trough 11 of diameter of a width and guide pillar 6, this straight trough 11 communicates with the upper end of support 1, the upper end of described guide rod 3 and handwheel 4 are connected, the lower end of described guide rod 3 is the step post, its miner diameter end 31 is provided with screw thread formation screw rod and cooperates with screw 21 spirals of guide pin bushing 2, its bigger diameter end 32 sidewalls are provided with groove 33, the length of this groove 33, the length of wide and guide pillar 6, diameter is suitable, and the wall thickness sum of the counterbore 23 of the degree of depth of this groove 33 and guide pin bushing 2 equals or is slightly larger than the diameter of guide pillar 6, and the wall thickness sum of the counterbore 23 of the degree of depth of straight trough 11 and guide pin bushing 2 equals or be slightly larger than the diameter of guide pillar 6.

The upper/lower terminal of the guide pillar 6 in the illustrated embodiment is a sphere, and end face is that sphere can make the more flexible slippage in groove of this guide pillar, and obvious, as a special case of guide pillar, and this guide pillar even can be a ball.

When the utility model embodiment's guide pillar 6 is positioned at the groove 24 of guide pin bushing 2 and the straight trough 11 (as shown in Figure 4) of

support

1,5 of pilot pins are positioned at the vertical slots 222 (as shown in Figure 6) of L shaped guide groove 22, at this moment handwheel 4 ought turn clockwise, handwheel 4 drives guide rod 3 and turns clockwise, guide rod 3 rotations make the screw rod 31 of its lower end cooperate with screw 21 spirals of guide pin bushing 2, because the restriction of the vertical slots 222 of pilot pin 5 and L shaped guide groove 22, make that guide pin bushing 2 can only be along moving on the axis straight line, so guide pin bushing 2 drives valve rods 7 and moves on axially, move on the valve rod 7 and make the spool translation, move on the valve rod 7 to a certain degree is that guide pin bushing 2 is when rising to a certain degree, when the groove 33 of guide rod 3 just faces toward guide pillar 6, guide pillar 6 is deviate from the straight trough 11 of support 1 and is fallen into the groove 33 of guide rod 3 (guide pillar 6 parts are positioned at the groove 24 of guide pin bushing 2, a part is positioned at the groove 33 of guide rod 3, as shown in Figure 5), and at this moment, the lower end that pilot pin 5 also just is positioned at the vertical slots 222 of L shaped guide groove 22 is the transverse groove 221 of L shaped guide groove 22, when so handwheel 4 drives guide rod 3 rotations, guide rod 3 just drives guide pin bushing 2 rotations simultaneously, guide pin bushing 2 rotations then make valve rod 7 rotations, thereby can drive the spool rotation.

Be illustrated in figure 8 as a kind of stopcock that is equiped with the utility model valve operating mechanism, when stopcock is in closed condition and desires to open, and by the mode operating operation mechanism as epimere, can make spool 8 promote to revolve then earlier and turn 90 degrees, realize the unlatching of valve, and when desiring throttle down, by being rotated counterclockwise handwheel, just can make valve rod 7 drive spool 90 degree that circle round earlier, and then drive spool 8 and move down, thereby realize closing of valve along valve rod 7 axis.

Be illustrated in figure 9 as a kind of ball valve that is equiped with the utility model valve operating mechanism, when ball valve is in closed condition and desires to open, and by the mode operating operation mechanism as epimere, valve rod 7 is promoted earlier, cammed surface 71 by valve rod 7 lower ends makes spheroid 8 ' elder generation to left, valve rod 7 is revolved turn 90 degrees and promptly drive spheroid 8 ' revolve and turn 90 degrees, realize the unlatching of valve, and when desiring throttle down, by being rotated counterclockwise handwheel 4, just can make valve rod 7 drive spheroid 8 ' 90 degree that circle round earlier, utilize cammed surface 71 to drive spheroids 8 ' with moving down of valve rod 7 then, thereby realize closing of valve to right translation.

The utility model valve operating mechanism is not only applicable to stopcock, and is applicable to various valves such as ball valve, butterfly valve.

Claims

1. valve operating mechanism, include support and handwheel, it is characterized in that: also include guide rod, guide pin bushing, described guide pin bushing is placed in the support, the axle center of guide pin bushing is provided with the also coaxial counterbore that is provided with in upper end of screw and guide pin bushing, on the external diameter below the counterbore of guide pin bushing, also be provided with a L shaped guide groove, the corresponding pilot pin that cooperates with this L shaped guide groove guide rail that is provided with on support, on the sidewall of the counterbore of guide pin bushing, also be provided with a groove, be provided with control position guide pillar in the groove, on the inner hole wall of support, also be provided with the suitable straight trough of diameter of a width and guide pillar, this straight trough communicates with the upper end of support, the upper end and the handwheel of described guide rod are connected, the lower end of described guide rod is the step post, its miner diameter end is provided with screw thread formation screw rod and cooperates with the screw spiral of guide pin bushing, its bigger diameter end sidewall is provided with groove, the length of this groove, wide with lead the length of pearl, diameter is suitable, and the wall thickness sum of the degree of depth of this groove and the counterbore of guide pin bushing equals or is slightly larger than the diameter of guide pillar, and the wall thickness sum of the degree of depth of straight trough and the counterbore of guide pin bushing equals or be slightly larger than the diameter of guide pillar.

2. valve operating mechanism according to claim 1 is characterized in that: the upper/lower terminal of described guide pillar is a sphere.