CN205841788U - A kind of stop valve - Google Patents

Abstract

This utility model provides a kind of stop valve, belongs to valve technology field.It solve existing stop valve and assemble trouble, and the problem that stability reduces.This stop valve, including valve body and valve rod, water inlet and outlet is offered respectively on valve body, valve body inner bottom surface has the gear edge of tubular, the port on this gear edge was the mouth of a river, water inlet and the intracavity inter-connection keeping off edge, outlet and the intracavity inter-connection of valve body, installing hole is offered on valve outer wall, cross the mouth of a river relative with installing hole, valve rod is screwed onto in installing hole, and the inner of valve rod is relative with crossing the mouth of a river, the inner ends thereof connection of valve rod has when valve rod screws can seal the sealing gasket being pressed on edge, the mouth of a river, it is also associated with reducing the anti-attrition sheet of frictional force between sealing gasket and valve rod between valve rod and sealing gasket.This stop valve structure is simple, and can reduce the abrasion of sealing gasket, improves sealing.

Description

A kind of stop valve

Technical field

This utility model belongs to valve technology field, relates to a kind of stop valve.

Background technology

Stop valve, also known as pipe valve valve, belongs to forced seal formula valve, so when valve closing, it is necessary to apply pressure to flap Power, does not leaks with forced seal face, and stop valve is one of most popular a kind of valve, it is the most very popular be due to During opening and closing, between sealing surface, frictional force is little, relatively durable, and Lift is little, easy to manufacture, easy to maintenance, is not only suitable for In mesolow, and it is applicable to high pressure.

As Chinese invention patent application (application number: 201410832968.0) discloses a kind of plastic stop valve, include Valve gap, flap, valve rod and plastics valve body, valve rod passes valve gap, is provided with valve seat in plastic valve body, and described valve seat has valve seat Opening, valve seat opening is relative with the flap being positioned at stem bottom, and the two ends of plastics valve body are respectively provided with and valve seat opening in communication Flow inlet and go out head piece, the top of plastics valve body has the transition connector of plastics valve body, is provided with at this transition connector The plastics with valve gap connection inserting part connect transition piece, and the transition connector of its outer rim and plastics valve body is fixed by hot melt adhesion Being integrated, valve gap is connected with valve gap connection inserting part.The through hole that can also make valve gap connection inserting part on this basis is less than flap, Thus flap is limited in plastic valve body, this stop valve is sealed by flap, and flap has stem, and passes through bar Shape portion is connected with threaded stem, flap can be made to lift by rotary valve rod, it is achieved the keying of stop valve, but due to flap with Valve rod is split type screw connection structure, but the structure member of entirety becomes many, is therefore also required to extra increase sealing member Seal, cause this stop valve to assemble trouble, and stability reduces.

Summary of the invention

The purpose of this utility model is to there are the problems referred to above for existing technology, it is proposed that a kind of stop valve, this cut-off Valve arrangement is simple, and can reduce the abrasion of sealing gasket, improves sealing.

The purpose of this utility model can be realized by following technical proposal: a kind of stop valve, including valve body and valve rod, institute Stating and offer water inlet and outlet on valve body respectively, have the gear edge of tubular on valve body inner bottom surface, the port on this gear edge is Cross the mouth of a river, described water inlet and the intracavity inter-connection keeping off edge, described outlet and the intracavity inter-connection of valve body, it is characterised in that Offering installing hole on described valve outer wall, the above-mentioned mouth of a river excessively is relative with installing hole, and described valve rod is screwed onto in installing hole, and valve The inner of bar is with to cross the mouth of a river relative, and the connection of the inner ends thereof of described valve rod has when valve rod screws to seal and was pressed on the mouth of a river The sealing gasket at edge, is also associated with between described valve rod and sealing gasket reducing the anti-attrition of frictional force between sealing gasket and valve rod Sheet.

The water inlet of valve body is connected with water inlet pipe, and outlet is connected with outlet pipe, when sealing gasket departed from limit, the mouth of a river Along time, the water of water inlet pipe through water inlet and cross the mouth of a river flowed out by outlet, when sealing gasket is pressed on edge, the mouth of a river realize Sealing, i.e. cross the mouth of a river and block with outlet, wherein valve rod is monoblock type, and sealing gasket is connected directly between on valve rod, is revolved by valve rod Rotate into row and open and close operation, and valve rod is directly located in valve body, therefore simplifies the structure of overall stop valve so that assembling side Just, further, this stop valve carries out compressing sealing by sealing gasket, has preferable sealing effectiveness, and sealing gasket can phase Rotating valve rod, and arrange anti-attrition sheet between sealing gasket and valve rod, this anti-attrition sheet can reduce between sealing gasket and valve rod Frictional force, therefore sealing gasket was pressed on edge, the mouth of a river when during rotary valve rod, due to sealing gasket with cross edge, the mouth of a river it Between frictional force more than frictional force between sealing gasket and valve rod, therefore valve rod rotates and sealing gasket does not rotates, it is to avoid sealing gasket With cross edge, mouth of a river frictional force bigger time there is sliding friction, when sealing gasket becomes with crossing frictional force when edge, the mouth of a river gradually unclamps Little, when sealing gasket and the frictional force crossed between edge, the mouth of a river are less than the frictional force between sealing gasket and valve rod, sealing gasket is with valve rod Rotate together, but now sealing gasket and the frictional force crossed between edge, the mouth of a river are the least, reduce the abrasion of sealing gasket, thus Improve the sealing of sealing gasket further.

In above-mentioned stop valve, the inner of described valve rod has the sealing of plate-like, the center of described sealing Offer screw, be spirally connected in this screw limited screw, described sealing gasket and anti-attrition sheet the most ringwise, and sealing gasket and anti-attrition sheet All being set on limit sheet screw and between head and the sealing of limit sheet screw, described anti-attrition sheet is positioned at sealing and sealing Between pad, when sealing gasket downside was pressed on edge, the mouth of a river, the upper side of sealing gasket is pressed on the downside of anti-attrition sheet, The upper side of anti-attrition sheet is pressed on the downside of sealing.When valve rod rotates, if sealing gasket rubs with crossing edge, the mouth of a river Power is relatively big, then anti-attrition sheet is motionless with sealing gasket, and Relative friction occurs between sealing and anti-attrition sheet, but owing to anti-attrition sheet is gold Belong to material, there is preferable wearability, and and sealing between frictional force less so that the operation of valve rod is the lightest, When sealing gasket and the frictional force crossed between edge, the mouth of a river are less, anti-attrition sheet and sealing gasket rotate with valve rod.

In above-mentioned stop valve, the lower surface of described sealing offers the anti-attrition groove of at least one annular, described Anti-attrition groove and sealing have identical axial line.Anti-attrition groove can reduce the contact area between sealing and anti-attrition sheet, enters And reduce frictional force between the two, reducing sealing gasket further does not rotate required frictional force, thus reduces sealing gasket Abrasion.

In above-mentioned stop valve, edge, the lower surface circumference of described sealing has the limit convex edge of annular, above-mentioned subtracts Abrasive disc and sealing gasket are respectively positioned on limit convex along interior.Limit convex edge is used for carrying out spacing to sealing gasket, i.e. sealing gasket and limit, the mouth of a river excessively Can expand to surrounding along the edge of sealing gasket when compressing, this limit convex edge can limit sealing gasket and excessively expand and damage occur.

In above-mentioned stop valve, described stop valve also includes the valve gap of tubular, and described valve outer wall has tubular Installation portion, the endoporus of this installation portion is above-mentioned installing hole, and the lower end of described valve gap is screwed onto in installation portion, and described valve rod passes Valve gap, and the periphery wall of valve rod threadeds with the internal perisporium of valve gap.It is provided with rubber ring between capping and installation portion to seal, Valve gap upper end is stretched out for operating in the upper end of valve rod, and capping has certain length so that valve rod has certain shift motion, It is easy to keying and the flow-control of sealing gasket.

In above-mentioned stop valve, described stop valve also includes the bonnet of tubular, and the upper end port of described valve gap offers Screw, the bottom surface of this screw offers seal groove, is provided with some sealing rings in described seal groove, and described bonnet is set in valve rod Go up and be screwed onto in the screw of valve gap, and the lower end of bonnet is pressed on sealing ring.Bonnet matches with sealing ring, to valve rod with Movable sealing is carried out between valve gap.

In above-mentioned stop valve, described valve body internal perisporium and form annular between keeping off circumferentially wall cross water space, institute There is in stating valve body the carrier of tubular, this carrier passed water space, and one end of carrier is connected with water inlet, The other end and gear are along intracavity inter-connection, and described outlet is connected with crossing water space.The water that water inlet enters is through carrier also Enter gear along interior, then by upward cross the mouth of a river to around gear edge cross water space overflow, then by cross water space gather to outlet Holding together, this structure makes water be overflowed the diffusion of backward surrounding by crossing the mouth of a river, therefore has the preferably property passed through.

In above-mentioned stop valve, the described discharge area crossing water space was more than or equal to the discharge area at the mouth of a river. The discharge area of water inlet is identical with the discharge area crossing the mouth of a river, and the water that therefore water inlet pipe enters can be simultaneously by crossing water space Enter outlet pipe so that cross water efficiency high.

In above-mentioned stop valve, described stop valve also includes that the joint of two tubuloses, described valve body are offered water inlet and go out The two ends at the mouth of a river are all bolted with nut, and on the port inner wall of described nut, circumference has connection convex edge one, one end of described joint On outer wall, circumference has connection convex edge two, and described joint is plugged in nut, and connect convex edge two be connected to connect convex edge one with Between valve body end face.Joint is used for connecting water inlet pipe and outlet pipe, and joint is then connected on valve body by nut, by rotation Tight nut, connects convex edge two and can be pressed between connection convex edge one and valve body end face, it is achieved removably connect.

In above-mentioned stop valve, described joint is for moulding joint or the joint that is spirally connected.Mould the joint side by welding Formula is connected with water inlet pipe or outlet pipe, and has female thread in the inner nosepiece wall that is spirally connected, the mode being threaded connection with enter Water pipe or outlet pipe are connected.

Compared with prior art, this stop valve has the advantage that

1, being monoblock type due to valve rod, sealing gasket is connected directly between on valve rod, is rotated by valve rod and carries out opening and closing operation, and Valve rod is directly located in valve body, therefore simplifies the structure of overall stop valve so that easy to assembly.

2, can rotate relative to valve rod due to sealing gasket, and anti-attrition sheet is set between sealing gasket and valve rod, this anti-attrition sheet The frictional force between sealing gasket and valve rod can be reduced, therefore sealing gasket was pressed on edge, the mouth of a river when during rotary valve rod Sealing gasket does not rotates, and reduces the abrasion of sealing gasket, thus improves the sealing of sealing gasket further.

3, overflowed to the water space of crossing around gear edge by the mouth of a river of crossing upward due to water, cross the discharge area of water space simultaneously Being more than or equal to the discharge area at the mouth of a river, the water that therefore water inlet pipe enters can be simultaneously by crossing water space entrance water outlet Pipe so that cross water efficiency high.

Accompanying drawing explanation

Fig. 1 is off the structure sectional view of valve.

Fig. 2 is the schematic enlarged-scale view in Fig. 1 at A.

Fig. 3 is the schematic enlarged-scale view in Fig. 1 at B.

Fig. 4 is the structure top view of valve body.

In figure, 1, valve body；11, water inlet；12, outlet；13, gear edge；14, the mouth of a river is crossed；15, installation portion；16, install Hole；17, water space is crossed；18, carrier；2, valve rod；21, sealing；22, limit sheet screw；23, anti-attrition groove；24, limit convex edge； 3, sealing gasket；4, anti-attrition sheet；5, valve gap；51, seal groove；52, sealing ring；6, bonnet；7, nut；71, convex edge one is connected；8, connect Head；81, convex edge two is connected.

Detailed description of the invention

The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further Description, but this utility model is not limited to these embodiments.

As shown in Figure 1 and Figure 2, a kind of stop valve, including valve body 1 and valve rod 2, valve body 1 offers water inlet 11 He respectively Outlet 12, the water inlet 11 of valve body 1 is connected with water inlet pipe, and outlet 12 is connected with outlet pipe, on valve body 1 inner bottom surface Having the gear of tubular along 13, this gear was the mouth of a river 14 along the port of 13, water inlet 11 and the gear intracavity inter-connection along 13, outlet 12 with the intracavity inter-connection of valve body 1, valve body 1 outer wall offers installing hole 16, crosses the mouth of a river 14 relative with installing hole 16, valve rod 2 Being screwed onto in installing hole 16, and the inner of valve rod 2 is relative with crossing the mouth of a river 14, the inner ends thereof of valve rod 2 connects to be had when valve rod 2 screws Time can seal the sealing gasket 3 being pressed on edge, the mouth of a river 14, be also associated with between valve rod 2 and sealing gasket 3 reducing sealing The anti-attrition sheet 4 of frictional force between pad 3 and valve rod 2.When sealing gasket 3 departed from 14 edge, the mouth of a river, the water of water inlet pipe is through water inlet Mouthfuls 11 and cross the mouth of a river 14 and flowed out by outlet 12, realize when sealing gasket 3 is pressed on 14 edge, the mouth of a river sealing, i.e. cross the mouth of a river 14 Blocking with outlet 12, wherein valve rod 2 is monoblock type, and sealing gasket 3 is connected directly between on valve rod 2, is rotated by valve rod 2 and opens Closed operation, and valve rod 2 is directly located in valve body 1, therefore simplifies the structure of overall stop valve so that easy to assembly, enter one Step, this stop valve carries out compressing sealing by sealing gasket 3, has a preferable sealing effectiveness, and sealing gasket 3 can valve rod relatively 2 rotate, and arrange anti-attrition sheet 4 between sealing gasket 3 and valve rod 2, and this anti-attrition sheet 4 can reduce between sealing gasket 3 and valve rod 2 Frictional force, therefore sealing gasket 3 was pressed on 14 edge, the mouth of a river when during rotary valve rod 2, due to sealing gasket 3 and the mouth of a river 14 excessively Frictional force between edge is more than frictional force between sealing gasket 3 and valve rod 2, and therefore valve rod 2 rotates and sealing gasket 3 does not rotates, Avoid sealing gasket 3 with cross edge, the mouth of a river 14 frictional force bigger time there is sliding friction, when sealing gasket 3 with cross edge, the mouth of a river 14 gradually When unclamping, frictional force diminishes, when sealing gasket 3 and the frictional force crossed between edge, the mouth of a river 14 are less than between sealing gasket 3 and valve rod 2 During frictional force, sealing gasket 3 rotates with valve rod 2, but the frictional force now between sealing gasket 3 and mistake edge, the mouth of a river 14 is The least, reduce the abrasion of sealing gasket 3, thus improve the sealing of sealing gasket 3 further.

Specifically, the inner of valve rod 2 has the sealing 21 of plate-like, and the center of sealing 21 offers screw, Be spirally connected in screw limited screw 22, sealing gasket 3 and anti-attrition sheet 4 the most ringwise, and sealing gasket 3 is all set in limit with anti-attrition sheet 4 On sheet screw 22 and between head and the sealing 21 of limit sheet screw 22, anti-attrition sheet 4 be positioned at sealing 21 and sealing gasket 3 it Between, when sealing gasket 3 downside was pressed on 14 edge, the mouth of a river, the upper side of sealing gasket 3 is pressed on the downside of anti-attrition sheet 4 Go up, the upper side of anti-attrition sheet 4 is pressed on the downside of sealing 21, when valve rod 2 rotates, if sealing gasket 3 and the mouth of a river excessively 14 edge frictional force are relatively big, then anti-attrition sheet 4 is motionless with sealing gasket 3, and Relative friction occurs between sealing 21 and anti-attrition sheet 4, but Be owing to anti-attrition sheet 4 is metal material, there is preferable wearability, and and sealing 21 between frictional force less so that valve The operation of bar 2 is the lightest, anti-attrition sheet 4 and sealing gasket 3 when sealing gasket 3 and the frictional force crossed between edge, the mouth of a river 14 are less Rotate with valve rod 2.An annular anti-attrition groove 23, anti-attrition groove 23 and sealing 21 is offered on the lower surface of sealing 21 Having identical axial line, anti-attrition groove 23 can reduce the contact area between sealing 21 and anti-attrition sheet 4, and then reduces both Between frictional force, reduce further sealing gasket 3 and do not rotate required frictional force, thus reduce the abrasion of sealing gasket 3.Seal Edge, the lower surface circumference in portion 21 has the limit convex of annular along 24, and anti-attrition sheet 4 and sealing gasket 3 are respectively positioned on limit convex along 24, Limit convex is used for carrying out spacing to sealing gasket 3 along 24, i.e. sealing gasket 3 and the edge meeting of sealing gasket 3 when crossing edge, the mouth of a river 14 compression To surrounding expand, this limit convex along 24 can limit sealing gasket 3 excessively expand and occur damage.

Shown in Fig. 3, stop valve also includes the most tubular valve gap 5 and bonnet 6, and valve body 1 outer wall has tubular Installation portion 15, the endoporus of this installation portion 15 is above-mentioned installing hole 16, and the lower end of valve gap 5 is screwed onto in installation portion 15, described valve Bar 2 is through valve gap 5, and the periphery wall of valve rod 2 is threadeded with the internal perisporium of valve gap 5, is provided with rubber between capping and installation portion 15 Cushion rubber seals, and valve gap 5 upper end is stretched out for operating in the upper end of valve rod 2, and capping has certain length so that valve rod 2 has There is certain shift motion, it is simple to the keying of sealing gasket 3 and flow-control.The upper end port of valve gap 5 offers screw, this spiral shell Offering seal groove 51 on the bottom surface in hole, be provided with some sealing rings 52 in seal groove 51, bonnet 6 is set on valve rod 2 and is spirally connected In the screw of valve gap 5, and the lower end of bonnet 6 is pressed on sealing ring 52, and bonnet 6 matches with sealing ring 52, to valve rod 2 with Movable sealing is carried out between valve gap 5.Stop valve also includes the joint 8 of two tubuloses, and valve body 1 offers water inlet 11 and the two of outlet 12 End is all bolted with nut 7, and on the port inner wall of nut 7, circumference has connection convex edge 1, circumference tool on one end outer wall of joint 8 Having connection convex edge 2 81, joint 8 is plugged in nut 7, and connection convex edge 2 81 is connected to connect convex edge 1 and valve body 1 end face Between, joint 8 is used for connecting water inlet pipe and outlet pipe, and joint 8 is then connected on valve body 1, by screwing spiral shell by nut 7 Cap 7, connects convex edge 2 81 and can be pressed between connection convex edge 1 and valve body 1 end face, it is achieved removably connect.Joint 8 For moulding joint, mould joint and be connected with water inlet pipe or outlet pipe by the way of welding, certainly in the actual course of processing Center tap 8 can also have female thread for the joint that is spirally connected in the inner nosepiece wall that is spirally connected, the mode being threaded connection and water inlet pipe or Person's outlet pipe is connected.

Shown in Fig. 4, valve body 1 internal perisporium and gear form annular water space 17 excessively, in valve body 1 between 13 periphery walls There is the carrier 18 of tubular, this carrier 18 passed water space 17, and one end of carrier 18 is connected with water inlet 11 Logical, the other end and gear are along 13 intracavity inter-connections, and described outlet 12 is connected with crossing water space 17, and the water that water inlet 11 enters is worn Cross carrier 18 and enter gear along 13, then by upward cross the mouth of a river 14 to around gear along 13 cross water space 17 overflow, then Being gathered to outlet 12 by crossing water space 17, this structure makes water be overflowed the diffusion of backward surrounding by crossing the mouth of a river 14, therefore has relatively The good property passed through.The discharge area crossing water space 17 was more than or equal to the discharge area at the mouth of a river 14, the water excessively of water inlet 11 Area is identical with the discharge area at the mouth of a river 14 excessively, and the water that therefore water inlet pipe enters can enter water outlet by water space 17 excessively simultaneously Pipe so that cross water efficiency high.

Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.

Although the most more employing the terms such as valve body 1, water inlet 11, outlet 12, but it is not precluded from using other The probability of term.Use these terms to be only used to more easily and describe and explain essence of the present utility model；Them It is all contrary with this utility model spirit for being construed to any additional restriction.

Claims (10)

1. a stop valve, including valve body (1) and valve rod (2), described valve body (1) offers water inlet (11) and water outlet respectively Mouth (12), has the gear of tubular along (13) on valve body (1) inner bottom surface, and this gear was the mouth of a river (14) along the port of (13), described Water inlet (11) and the intracavity inter-connection keeping off the intracavity inter-connection along (13), described outlet (12) and valve body (1), its feature exists In, described valve body (1) outer wall offers installing hole (16), above-mentioned the mouth of a river (14) excessively are relative with installing hole (16), described valve rod (2) being screwed onto in installing hole (16), and the inner of valve rod (2) is relative with crossing the mouth of a river (14), the inner ends thereof of described valve rod (2) is even It is connected to when valve rod (2) screws to seal the sealing gasket (3) being pressed on the mouth of a river (14) edge, described valve rod (2) and sealing It is also associated with reducing the anti-attrition sheet (4) of frictional force between sealing gasket (3) and valve rod (2) between pad (3).

Stop valve the most according to claim 1, it is characterised in that the inner of described valve rod (2) has the sealing of plate-like (21), the center of described sealing (21) offers screw, and be spirally connected in this screw limited screw (22), described sealing gasket (3) and anti-attrition sheet (4) the most ringwise, and sealing gasket (3) and anti-attrition sheet (4) to be all set in limit sheet screw (22) upper and be positioned at limit sheet Between head and the sealing (21) of screw (22), described anti-attrition sheet (4) is positioned between sealing (21) and sealing gasket (3), when When sealing gasket (3) downside was pressed on the mouth of a river (14) edge, the upper side of sealing gasket (3) is pressed on the downside of anti-attrition sheet (4) On face, the upper side of anti-attrition sheet (4) is pressed on the downside of sealing (21).

Stop valve the most according to claim 2, it is characterised in that offer at least on the lower surface of described sealing (21) One annular anti-attrition groove (23), described anti-attrition groove (23) and sealing (21) have identical axial line.

Stop valve the most according to claim 3, it is characterised in that edge, the lower surface circumference of described sealing (21) has The limit convex of annular is along (24), and above-mentioned anti-attrition sheet (4) and sealing gasket (3) are respectively positioned on limit convex along (24).

5. according to the stop valve described in Claims 2 or 3 or 4, it is characterised in that described stop valve also includes the valve gap of tubular (5), described valve body (1) outer wall having the installation portion (15) of tubular, the endoporus of this installation portion (15) is above-mentioned installing hole (16), the lower end of described valve gap (5) is screwed onto in installation portion (15), and described valve rod (2) passes outside valve gap (5), and valve rod (2) Perisporium is threadeded with the internal perisporium of valve gap (5).

Stop valve the most according to claim 5, it is characterised in that described stop valve also includes the bonnet (6) of tubular, described The upper end port of valve gap (5) offers screw, and the bottom surface of this screw offers seal groove (51), and described seal groove sets in (51) There are some sealing rings (52), described bonnet (6) to be set on valve rod (2) and are screwed onto in the screw of valve gap (5), and bonnet (6) Lower end be pressed on sealing ring (52).

7. according to the stop valve described in Claims 2 or 3 or 4, it is characterised in that described valve body (1) internal perisporium and gear edge (13) Form annular between periphery wall crosses water space (17), has the carrier (18) of tubular, this carrier in described valve body (1) (18) passed water space (17), and one end of carrier (18) is connected with water inlet (11), and the other end and gear are along (13) Intracavity inter-connection, described outlet (12) is connected with crossing water space (17).

Stop valve the most according to claim 7, it is characterised in that described cross water space (17) discharge area more than or It was equal to the discharge area of the mouth of a river (14).

9. according to the stop valve described in Claims 2 or 3 or 4, it is characterised in that described stop valve also includes the joint of two tubuloses (8), described valve body (1) is offered the two ends of water inlet (11) and outlet (12) and is all bolted with nut (7), described nut (7) On port inner wall, circumference has connection convex edge one (71), and on one end outer wall of described joint (8), circumference has connection convex edge two (81), described joint (8) is plugged in nut (7), and connection convex edge two (81) is connected to connect convex edge one (71) and valve body (1) Between end face.

Stop valve the most according to claim 9, it is characterised in that described joint (8) connects for moulding joint or be spirally connected Head.