CN2463619Y

CN2463619Y - Horizontal blind plate valve

Info

Publication number: CN2463619Y
Application number: CN 01214125
Authority: CN
Inventors: 刘连城; 陶信孚
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-09
Filing date: 2001-02-09
Publication date: 2001-12-05
Anticipated expiration: 2011-02-09

Abstract

The utility model provides a horizontal blind plate valve which is composed of a valve body, an on-off screw rod arranged on the valve body, and a movable valve core arranged in the valve body, wherein a pipe opening of an inlet pipe and a pipe opening of an outlet pipe are symmetrically arranged on the valve body, and valve plates are symmetrically arranged on the valve core. The utility model is characterized in that the valve core is also provided with a central frame which is composed of a driving connecting rod group, a power rod which drives the connecting rod group to move, and a frame which fixedly supports the driving connecting rod group and the power rod. The connecting rod group which is driven through three stages leads the on-off of the valve plates to be flexible, convenient and quick. The force which is applied on the valve plates is balanced, and the sealing effect of the valve is greatly enhanced. The utility model can conveniently use inert gas, etc. for detection, simultaneously, the utility model is used as a remedial method for secondary seal to ensure safe production and safe operation, and the utility model is a novel ideal valve.

Description

A kind of horizontal blank-plate valve

The utility model relates to a kind of valve, relates in particular to a kind of double-flashboard gas valve that is applicable to the blocking-up gas medium.

Conventional valves such as present widely used gate valve, ball valve, butterfly valve, stop valve, glasses valve all have the function of cutting off medium, but these valves more or less can not cut off medium fully, for this reason, during producing, reality is everlasting behind the Shuttoff Valve, adopt the method for taking out, blocking up blind plate to remedy above-mentioned deficiency again on pipeline, this method is complicated operation, difficulty not only, and needs certain activity duration, and must be by operator in band gas operation, its safety, reliability are relatively poor.In addition when valve leak, there are not the quite good detecting means that it is detected, therefore, need be with disconnected certain a part of pipe-line system of crush-cutting to make troubles aborning to those, even and for important production link, have to because certain a part of pipe-line system fault can't be cut off and whole huge work system is shut down.Chinese patent discloses a kind of name and has been called " double-flashboard valve ", the patent No. is 99245207.4 utility model patent, it is hinged two connecting rods in underpart that open and close screw mandrel at flashboard, the other end of this two connecting rod is respectively arranged with and the corresponding valve plate of connecting tube orifice configuration, and valve plate moves chute and is arranged on the valve interior wall.Since in this patent the force bearing point of valve plate only be the middle part a bit, and the unlatching of valve plate and moving by power lever realization, therefore, it can only be used on the pipeline less than 800 millimeters bores, can not use as the large diameter pipeline valve.

The purpose of this utility model is to overcome the deficiency of prior art, and a kind of be easy to detect leakage and good sealing effect, horizontal blank-plate valve swift to operate are provided.

The utility model is realized by following technical proposal: it is by valve body, be located at the keying screw mandrel on the valve body, be located in the valve body and drive its spool that in valve body, moves and constitute by the keying screw mandrel, wherein be arranged with on the valve body be communicated with body cavity into and out of the pipe mouth of pipe, be arranged with on the spool with each into and out of pipe orifice configuration corresponding valve plate, it is characterized in that also being provided with by the kinematic link group on the spool, drive the power lever and their center rest that framework constituted of fixed bearing of this connection rod set motion.

Power lever on the described center rest is the screw rod that a positive and negative direction rotates, one end of screw rod is located at the middle part of framework vertical pole by bearing and bearing support, the other end passes another vertical pole middle part of framework and links to each other with the coupling that activity connects, link to each other with power source by this coupling again, so that under power source drives, make screw rod forward or counterrotating.

Kinematic link group on the described center rest is made up of three groups of symmetrical at least connecting rods, and wherein, first group of connecting rod is hinged by an end, and the other end constitutes with two connecting rods that the nut that is located on the screw rod is hinged respectively; Second group of connecting rod is hinged by an end, and two connecting rods that the other end links to each other with link respectively constitute, and first group, second a group end that is hinged is all hinged by same hinge; The 3rd group of connecting rod is hinged and continuous with the link that is connected second group of connecting rod by an end respectively, two pairs of connecting rods that the other end is hinged on the valve plate constitute, transmission by three groups of connecting rods, make power become pulling force or the thrust that acts on four symmetric angle of valve plate, thereby realize the unlatching of two valve plates or close through three grades of amplifications from screw rod.

Framework on the described center rest is made of the left and right vertical pole of both sides and the cross bar on top, and the cross bar on top is a hollow tube, and the two ends of pipe are respectively equipped with adpting flange, is used for linking to each other with the screw mandrel cover, and screw mandrel is moved in hollow tube.The top of center rest is provided with scroll wheel, and this scroll wheel places in the guide rail at valve body top; The bottom of center rest is provided with upper saw pulley, and this upper saw pulley places in the guide groove of valve body bottom, so that under screw mandrel drives, makes center rest left and right moving in valve body.

The utility model compared with prior art has following advantage and effect: can drive the screw mandrel and connected element thereof that spool moves except that being provided with on the spool, also be provided with the screw rod of open and close valve plate and through the connection rod set of three utmost point transmissions, make the open and close of valve plate flexible, convenient, fast, the power that acts on simultaneously on four symmetric angle of each valve plate is comparatively balanced, and the valve plate two way sealed is tight, therefore, greatly improved the sealing effect of this valve.Setting of the present utility model can use inert gas or harmless liquid that valve is detected easily in addition, while is as the means of remedying of secondary seal, to ensure safety in production and safety operation, real is comparatively desirable inflammable or poisonous, harmful gas valve of a new generation, is specially adapted to the bigbore pipeline valve of low pressure.

Fig. 1 is the plan view of the utility model;

Fig. 2 is the left view of the utility model;

Fig. 3 is the partial enlarged drawing of Fig. 2;

Fig. 4, Fig. 5 are valve board structure figure;

Fig. 6 is the center rest structural drawing of spool;

Fig. 7 is the center rest left view;

Fig. 8 is that A among Fig. 6 is to figure;

Fig. 9 is the partial structurtes figure of Fig. 1.

Below in conjunction with accompanying drawing the utility model is described further.

Among the figure, 1 is the valve body of cross setting, before the valve body left side, back plate is arranged with advancing of communicating with body cavity, go out the mouth of pipe 2,3 is motor, 4 is handle, by electronic or manually drive screw rod and open, close valve plate, 5 is handle, 6 is motor, by electronic or manually drive screw mandrel spool is laterally moved in valve body, 7 are inert gas detection mouth, 8 is water filling hole, in valve body, feed gas or liquid by them, so that detect the sealing situation of valve plate, 9 is drain opening, also can detect the sealing situation of valve in addition by the pressure gauge on the valve body, 10 is spool, its top is provided with scroll wheel 11, scroll wheel 11 places in the guide rail 12 at valve body top, the bottom is provided with upper saw pulley 16, this upper saw pulley places in the guide groove 17 of valve body bottom, so that spool 10 laterally moves in valve body 1,13 for being located at the center rest on the spool 10, the bilateral symmetry of center rest is provided with and passes in and out the corresponding valve plate 14 of pipe orifice configuration, the face that contacts with the mouth of pipe on the valve plate is provided with sealing gasket 18, be respectively equipped with four pulleys 19 on four symmetric angle of valve plate another side, each pulley all is arranged in the short-range missile groove 20 at corresponding four angles on the center rest, when being used to support valve plate, being convenient to valve plate moves in short distance, thereby realize the unlatching of valve plate or close, center rest 13 is by a left side, the vertical pole 21 of right both sides and the cross bar on top 22 constitute, cross bar 22 is a hollow tube, the two ends of pipe are provided with adpting flange 23, be used for linking to each other with screw mandrel screw pair 39, screw mandrel 40 1 ends place in the hollow tube 22 by adpting flange, the other end is by black box 41, coupling 42 links to each other with motor 6 or handle 5, on a left side, the middle part of right vertical pole 21 is provided with screw rod 24, the right-hand member of screw rod 24 places in the bearing 25, the left end of screw rod 24 passes bearing 26 and links to each other with coupling 27, this coupling links to each other with the main shaft of motor 3 again, be arranged with two nuts 28 on the screw rod 24, be arranged with first group of connecting rod 30 by pin 29 on the nut, the other end of connecting rod 30 and second group of connecting rod 32 1 end all are hinged together by pin 31, the other end of connecting rod 32 is articulated on the knuckle 34 by pin 33, the 3rd group of connecting rod 36 1 ends are hinged on the knuckle 34 jointly by pin 35, and connecting rod 36 the other ends are installed on respectively in four symmetrical axis holes 38 of valve plate 14 by pin 37.When throttle down, elder generation's starting electrical machinery 6, spool 10 moves to left in valve body under screw mandrel 40 drives, after putting in place, and starting electrical machinery 3, screw rod 24 is rotated, simultaneously two axle sleeves 28 on it all move to the screw rod middle part, and each moves up and down thereby promote first group of connecting rod 30, promote again second group of connecting rod 32 each left, move right, respectively two valve plates are pushed to seal by the 3rd group of connecting rod 36, otherwise got final product Open valve into and out of the pipe mouth of pipe.

Claims

1, a kind of horizontal blank-plate valve, it is by valve body, be located at the keying screw mandrel on the valve body, be located in the valve body and drive its spool that in valve body, moves and constitute by opening and closing screw mandrel, wherein be arranged with on the valve body is communicated with body cavity into and out of the pipe mouth of pipe, be arranged with on the spool with each into and out of managing the corresponding valve plate of orifice configuration, it is characterized in that also being provided with by the kinematic link group on the spool, drive the power lever and their center rest that framework constituted of fixed bearing of this connection rod set motion.

2, blank-plate valve according to claim 1, it is characterized in that the power lever on the described center rest is the screw rod that a positive and negative direction rotates, one end of screw rod is located at the middle part of framework vertical pole by bearing and bearing support, the other end passes another vertical pole middle part of framework and links to each other with the coupling that activity connects, and links to each other with power source by this coupling again.

3, blank-plate valve according to claim 1 is characterized in that the kinematic link group on the described center rest is made up of three groups of symmetrical at least connecting rods, wherein, first group of connecting rod is hinged by an end, and the other end constitutes with two connecting rods that the nut that is located on the screw rod is hinged respectively; Second group of connecting rod is hinged by an end, and two connecting rods that the other end links to each other with link respectively constitute, and first group, second a group end that is hinged is all hinged by same hinge; The 3rd group of connecting rod is hinged and continuous with the link that is connected second group of connecting rod by an end respectively, and two pairs of connecting rods that the other end is hinged on the valve plate constitute.

4, blank-plate valve according to claim 1 is characterized in that the framework on the described center rest is made of the left and right vertical pole of both sides and the cross bar on top, and the cross bar on top is a hollow tube, and the two ends of pipe are respectively equipped with adpting flange.

5, blank-plate valve according to claim 1 is characterized in that the top of center rest is provided with scroll wheel, and this scroll wheel places in the guide rail at valve body top; The bottom of center rest is provided with upper saw pulley, and this upper saw pulley places in the guide groove of valve body bottom.