CN2460810Y - Full-sealed no-leakage multipurpose valve - Google Patents

Abstract

The utility model discloses a fully-sealed no-leakage multi-purpose valve. An inner cavity of a valve body is divided into an upper and a lower cavities through a dividing wall, a valve seat is arranged on the dividing wall, and a stepped flange provided with an inner hole is arranged between an upper port of the valve body and a valve cap. A valve core is sheathed in an inner hole of the flange, wherein, the upper end of the valve core is provided with an elastic threaded pipe, and a valve disc is positioned at the lower end of the valve core. A pressure spring is positioned in an inner cavity of the valve cap, a valve rod is sheathed in an inner cavity of the valve core, wherein, the lower end of the valve rod is positioned on a lower end body of the valve core, and the upper end of the valve rod is provided with a hand wheel. The utility model has the characteristics of simple structure, low manufacture cost, good seal performance, long service life and convenient maintenance.

Description

Hermetically sealed nothing is leaked multipurpose valve

The utility model relates to a kind of valve, and especially a kind of hermetically sealed nothing is leaked multipurpose valve.

At present, making in the society and use in the valve that is used to control fluid many kinds are arranged, as stop valve, safety check, needle-valve etc.Though these valves can be realized task separately to a certain extent, because itself structure institute is to the defective that has complex structure, manufacture cost height, working life weak point, poor sealing performance, easy leakage.

Task of the present utility model is to provide a kind of simple in structure, low cost of manufacture, good seal performance, novel fully-sealed nothing easy to maintenance, long service life to leak multipurpose valve.

Task of the present utility model takes following technological scheme to realize.By be connected under the liquid outlet on the side valve wall and liquid entering hole on partitioning wall on the side valve wall inner chamber of Three way type valve body cut off be upper chamber that is connected with liquid outlet and the lower chambers that is connected with liquid entering hole, be set with the valve seat that chamber is connected about can making in the through hole on being arranged on partitioning wall, add the step type flange that has endoporus between the suitable for reading and valve gap of valve body and by bolt with valve body, flange and valve bonnet seal link together, in the endoporus of flange, be set with its upper end for the elastic thread pipe and be positioned at flange and valve gap between, its lower end is positioned with the spool that can be located in the valve disc on the valve seat by resilient pin, in the inner chamber of valve gap by on lower spring cup be positioned with pressure spring, being set with its lower end in the inner chamber of spool and spring is positioned on the body of spool lower end by screw-thread fit, its upper end by valve gap be placed on the valve gap upside and thereon screw thread be fitted with handwheel and its upper end section be provided with the valve rod of screw thread, be provided with feather key between the upper end of valve gap and valve rod, the vertical length of the keyway on the valve rod is greater than the guiding key length.When using the utility model, the utility model is serially connected in the fluid line, this moment, fluid flowed out from liquid outlet opening after entering in the upper chamber of valve body the back by inlet opening and entering lower chambers by valve seat, when the needs throttle down, handwheel turns clockwise, move down and drive valve disc at the effect lower valve rod of handwheel and move down, it is fallen on the valve seat, thereby realize the task of throttle down; When needs are opened valve, be rotated counterclockwise handwheel, on the effect lower valve rod of handwheel, move and drive on the valve disc and move, make it break away from valve seat, thereby realize opening the task of valve.

Owing to adopted such scheme, the utlity model has following evident characteristic: the one, closing of valve is to the pressure that spool produced valve disc to be pressed on after moving down by valve rod to realize on the valve seat, but because between valve rod and the spool and handwheel, it between the valve rod screw-thread fit, the error of its screw-thread fit or because the gap of the screw-thread fit that causes of fair wear and tear easily makes the leakiness that cooperates between valve disc and the valve seat, cause valve leak, the utility model is owing to the epimere with spool adopts the elastic thread pipe, the elastic force of this elastic thread pipe acts on the valve disc, thereby can effectively overcome the defective that causes valve leak owing to the screw-thread fit leakiness, the task that therefore can effectively realize reducing machining accuracy and improve its practical life-span; The 2nd since adopt between spool described in the utility model and the valve disc resilient pin Placement and up and down the connection between the chamber adopt the form of valve seat, so can easily valve disc and valve seat be taken off; Therefore have characteristics easy to maintenance; The 3rd, because the utility model overall structure is simple, so have low cost of manufacture, be suitable for universal characteristics.

Below will further describe as follows with reference to the accompanying drawings to the utility model.

Accompanying drawing has provided structural representation of the present utility model.

In the accompanying drawings, 1 is that valve body, 2 is that partitioning wall, 3 is that lower chambers, 4 is that valve seat, 5 is that upper chamber, 6 is that valve disc, 7 is that spool, 8 is that sealing gasket, 9 is that flange, 10 is that lower spring cup, 11 is that pressure spring, 12 is that upper spring seat, 13 is that keyway, 14 is that valve rod, 15 is that handwheel, 16 is that feather key, 17 is that elastic thread pipe, 18 is that sealing gasket, 19 is that bolt, 20 is that resilient pin, 21 is that liquid outlet, 22 is that liquid entering hole, 23 is a valve gap.

With reference to the accompanying drawings, by on the following side valve wall that is connected liquid outlet 21 places and the partitioning wall 2 on the last side valve wall at liquid entering hole 22 places the inner chamber of Three way type valve body 1 is cut off is upper chamber 5 that is connected with liquid outlet 21 and the lower chambers 3 that is connected with liquid entering hole 22, be set with in the through hole on being arranged on partitioning wall 2 center portions and can make chamber 5 up and down, 3 valve seats that are connected 4, add the step type flange 9 that has endoporus between the suitable for reading and valve gap 23 of Three way type valve body 1 and pass through bolt 19 valve body 1, flange 9 is tightly connected with valve gap 23 and is in the same place, in the endoporus of flange 9, be set with its upper end for elastic thread pipe 17 and be positioned at flange 9 and valve gap 23 between, its lower end is positioned with the spool 7 of the valve disc 6 that can be located on the valve seat 4 by resilient pin 20, in the inner chamber of valve gap 23, be positioned with pressure spring 11 by upper spring seat 12 and lower spring cup 10, being set with its lower end in the inner chamber of spool 7 and pressure spring 11 is positioned at by screw-thread fit on the spool 7 lower end bodies, its upper end by valve gap 23 be placed on the valve gap upside and thereon screw thread be fitted with handwheel 15 and its upper end section be provided with the valve rod 14 of screw thread, be provided with feather key 16 between the upper end of valve gap 23 and valve rod 14, the vertical length of the keyway 13 on the valve rod 14 is greater than the length of feather key 16.

Claims (2)

1, a kind of hermetically sealed nothing is leaked multipurpose valve, mainly by the Three way type valve body, valve gap, flange, spool, valve rod is formed, it is characterized in that by be connected under the liquid outlet on the side valve wall and liquid entering hole on partitioning wall on the side valve wall inner chamber of Three way type valve body cut off be upper chamber that is connected with liquid outlet and the lower chambers that is connected with liquid entering hole, be set with the valve seat that chamber is connected about can making in the through hole on being arranged on partitioning wall, add the step type flange that has endoporus between the suitable for reading and valve gap of valve body and by bolt with valve body, flange and valve bonnet seal link together, in the endoporus of flange, be set with its upper end for the elastic thread pipe and be positioned at flange and valve gap between, its lower end is positioned with the spool that can be located in the valve disc on the valve seat by resilient pin, in the inner chamber of valve gap by on lower spring cup be positioned with pressure spring, being set with its lower end in the inner chamber of spool and spring is positioned on the body of spool lower end by screw-thread fit, its upper end by valve gap be placed on the valve gap upside and thereon screw thread be fitted with handwheel and its upper end section be provided with the valve rod of screw thread, between the upper end of valve gap and valve rod, be provided with feather key.

2, hermetically sealed nothing according to claim 1 is leaked multipurpose valve, and the vertical length that it is characterized in that the keyway on the said valve rod is greater than the guiding key length.