CN2324358Y - Anti-leakage energy-saving valve - Google Patents

Abstract

The utility model relates to a valve which is provided with a sealing structure between a valve body or a valve cover of a valve body and a valve rod. The utility model comprises a valve body, a valve core which is matched with a valve port of the valve body, and a valve rod which is connected with the valve core, wherein, the valve rod and the valve body are formed into a movable fit and are extended from the valve body; the valve rod is provided with a shaft shoulder at the part in the valve body; the shaft shoulder is corresponding to an annular plane of the inner side of the valve body; a sealing gasket is arranged between the shaft shoulder and the annular plane. Therefore, the point where the valve rod and the valve body are sheathed is not provided with a stuffing and a packing. The axial end surface of the shaft shoulder of the valve rod is corresponding to the annular plane of the valve rod which is around the inner side of the valve body to press the sealing gasket, and therefore, the purpose of sealing can be achieved, and the fluid in the valve body can be effectively prevented from leaking from the point of the valve stem.

Description

The leakage-proof energy-saving valve

The utility model relates between the valve gap of a kind of valve body or valve body and the valve rod sealing configuration, prevents the valve of fluid from leaking between the valve gap of valve body or valve body and the valve rod in the valve body.

Existing leakproof valve has valve body, the spool that matches with the valve port of valve body, the valve rod that is connected with spool, valve rod and valve body movingly and stretch out valve body, valve body and valve rod locate to have seal groove movingly, are filled with sealing material in the groove.The sealing that valve rod and valve body are located movingly is to contact with all surface elastic extruding of valve rod by sealing material to realize.But sealing material contacts tension with all surface elastic extruding of valve rod, and valve rod is valve body and sealing material rotation work relatively; Sealing material contacts not tight with all surface elastic extruding of valve rod, will be gapped between the side face of sealing material and valve rod, will produce leakage.Time one is long, and the sealing material of extruding will follow the string.After rotating valve rod, will be gapped between the side face of sealing material and valve rod, also to produce leakage.In order to keep all surface elastic extruding contact seal of sealing material and valve rod, will on sealing material, be added with packing, and constantly compress packing, increased the structure of valve, increased labor intensity, and be to can't resolve when being the liquid of elevated pressures in the leakage that may occur at any time, particularly valve body, liquid easily stretches out leakage from valve rod especially.The long-term technical issues that need to address of valve have been become so stretch out leakage from valve rod.

The purpose of this utility model provides a kind of liquid of valve body that prevents and stretches out the valve that leaks from valve rod.Further provide and to prevent the dead valve of rust between valve rod and the valve body.

Leakage-proof energy-saving valve of the present utility model, the spool that valve body is arranged, match with the valve port of valve body, the valve rod that is connected with spool, valve rod and valve body are movingly and stretch out valve body, structural feature of the present utility model is: valve rod is positioned at the shaft shoulder that is partly with of valve body, the shaft shoulder is relative with an anchor ring of valve body inboard, is provided with sealing gasket between the shaft shoulder and the anchor ring.Sealing between valve rod and the valve body so is not at valve rod and valve body enchased part the filler and the packing of extruding side face to be set, but utilizes the shaft shoulder axial end and the inboard relative crush seal pad of planar annular around valve rod of valve body of valve rod, reaches sealing.Because the pressure in the valve body is always greater than the pressure in the external world, and valve rod one end an end is outside valve body in valve body, valve rod totally is that outside pressure is arranged, and makes the shaft shoulder end face of valve rod always push sealing gasket and valve body anchor ring, is keeping sealing state.When the external force Operating valve rod rotates, make the shaft shoulder, sealing gasket, anchor ring relatively rotate, because valve rod has outside pressure, also be difficult between the shaft shoulder, sealing gasket, anchor ring, producing the gap.Especially after stopping operating, under the effect of valve rod outward pressure, can form sealing closely between the shaft shoulder, sealing gasket, the anchor ring.In order further to improve sealing effect, prevent the component rotation valve rod in the oriented valve body and make leakage is arranged between the shaft shoulder, sealing gasket, the anchor ring, prevent that simultaneously dregs bigger in the valve body from entering between the shaft shoulder, sealing gasket, the anchor ring, the anchor ring place of valve body inboard is recessed for circle, and the shaft shoulder side face of valve rod is movingly recessed with circle.The shaft shoulder side face of valve rod preferably has annular groove and is provided with seal ring.Equally, between preventing that the outer bigger dregs of valve body from entering between the shaft shoulder, sealing gasket, the anchor ring and valve rod and valve body locate movingly, the side face that valve rod and valve body are located movingly has annular groove and is provided with seal ring.For existing valve is transformed, form the sealing between valve rod and the valve body, perhaps for the ease of the processing that cooperates between valve rod and the valve body, valve body and valve rod are located movingly and the anchor ring place of valve body is a lining.Just valve body and valve rod cooperation place, valve body has lining, lining and valve body are fixed into one, lining inboard with valve rod movingly, lining has around the planar annular of valve rod relative with the shaft shoulder face of valve rod, and the sealing gasket of mutual extrusion between them.It is recessed that the anchor ring place of same lining can be circle, the shaft shoulder side face of valve rod is movingly recessed with circle, prevent the component rotation valve rod in the oriented valve body and make leakage is arranged between the shaft shoulder, sealing gasket, the anchor ring, prevent that simultaneously dregs bigger in the valve body from entering between the shaft shoulder, sealing gasket, the anchor ring.The shaft shoulder side face of valve rod also preferably has annular groove and is provided with seal ring.Equally, in order to prevent that the outer bigger dregs of valve body from entering between the shaft shoulder, sealing gasket, the anchor ring and valve rod and lining are located movingly, the side face that valve rod and lining are located movingly has annular groove and is provided with seal ring.Enter between the shaft shoulder, sealing gasket, the anchor ring in order to prevent to become rusty dead between valve rod and valve body and the lining and produce anvil cinder, valve rod can be the stainless steel valve rod, and the lining of valve body can be stainless steel or copper bush.

So it is simple that compared with the prior art the utility model, has a sealing configuration, do not increase more than structural member, and saved the packing structural member; Sealing configuration is more reliable, can be not stressed because of the variation in pressure in the valve body, rotation valve rod or the external world, and produce clearance leakage; Needn't often adjust sealing configuration, significantly reduce maintenance, alleviate labor intensity; Guarantee the loss that do not leak outside of fluid in the valve simultaneously, avoided waste, also saved the energy.

Accompanying drawing represented the valve gap of a kind of water valve valve-body of the utility model and valve rod and between sealed structural representation.

Example below in conjunction with accompanying drawing further specifies the utility model.This leakage-proof energy-saving water valve, the spool that valve body is arranged, match with the valve port of valve body, the valve rod that is connected with spool.Valve body is divided into the valve gap 1 of body and butt joint.Valve rod 7 and valve gap are movingly and stretch out the valve gap of valve body.The outer end of valve rod also is provided with protective hat 6.Have stainless steel lining 4 between valve gap and the valve rod, the valve gap of stainless steel lining and valve body is fixed into one, and lining inner edge and valve rod are movingly.Be provided with the setscrew nut 5 of valve rod above the lining outer end.Lining the inner is a round concave shape, and there is the planar annular around valve rod the recessed the inside of circle.The corresponding part that valve rod is positioned at valve body has the shaft shoulder.The planar annular that circle is recessed and the end face (table top) of the inner peripheral surface and the valve rod shaft shoulder and side face are movingly.Be provided with sealing gasket 3 between the axial plane of the shaft shoulder and the anchor ring.The shaft shoulder side face of valve rod has annular groove and is provided with rubber seal 2.The lining inner peripheral surface that valve rod and lining are located movingly has annular groove and is provided with rubber seal.Sealing between the valve gap of valve rod and valve body is the shaft shoulder axial end and the planar annular relative crush seal pad of the recessed inboard of lining circle around valve rod that utilizes valve rod, reaches sealing effect.Because the pressure in the valve body is always greater than the pressure in the external world, and valve rod one end in valve body with end outside valve body, valve rod totally is that outside pressure is arranged, and makes the shaft shoulder end face of valve rod always push sealing gasket and valve body anchor ring, is keeping sealing state.Simultaneously, the relative rubber seal of pushing of the shaft shoulder side face of valve rod and the lining recessed inside circumference face of circle, the inner peripheral surface mutual extrusion rubber seal that valve rod and lining are located movingly reaches the effect of auxiliary seal.Thereby further improve sealing effect, prevent the component rotation valve rod in the oriented valve body and make leakage is arranged between the shaft shoulder, sealing gasket, the anchor ring, prevent valve body simultaneously inside and outside bigger dregs enter between the shaft shoulder, sealing gasket, the anchor ring.This leakage-proof energy-saving water valve has also prevented to become rusty between valve rod and valve body and the lining dead and has produced anvil cinder and entered between the shaft shoulder, sealing gasket, the anchor ring, has guaranteed the reliability that the long-term use of valve is not leaked.This leakage-proof energy-saving water valve can withstand voltage 250-300Kg/cm ²Do not leak no any leakage after opening and closing 20,000 times repeatedly.

Claims (6)

1, a kind of leakage-proof energy-saving valve, the spool that valve body is arranged, match with the valve port of valve body, the valve rod that is connected with spool, valve rod and valve body are movingly and stretch out valve body, it is characterized in that: valve rod is positioned at the shaft shoulder that is partly with of valve body, the shaft shoulder is relative with an anchor ring of valve body inboard, is provided with sealing gasket between the shaft shoulder and the anchor ring.

2, as the said leakage-proof energy-saving valve of claim 1, it is characterized in that: the anchor ring place of valve body inboard is recessed for circle, and the shaft shoulder side face of valve rod is movingly recessed with circle.

3, as the said leakage-proof energy-saving valve of claim 2, it is characterized in that: the shaft shoulder side face of valve rod has annular groove and is provided with seal ring.

4, as the said leakage-proof energy-saving valve of claim 2, it is characterized in that: the side face that valve rod and valve body are located movingly has annular groove and is provided with seal ring.

5, as claim 1 or 2 or 3 said leakage-proof energy-saving valves, it is characterized in that: valve body and valve rod are located movingly and the anchor ring place of valve body is and the fixing lining of valve body.

6, as the said leakage-proof energy-saving valve of claim 5, it is characterized in that: valve rod is stainless steel or copper valve rod, and the lining of valve body is stainless steel or copper bush.

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