CN201425098Y

CN201425098Y - Stop valve

Info

Publication number: CN201425098Y
Application number: CN2009201461565U
Authority: CN
Inventors: 徐海涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-27
Filing date: 2009-03-27
Publication date: 2010-03-17
Anticipated expiration: 2019-03-27

Abstract

Disclosed is a stop valve which belongs to valve gates and comprises a hand wheel, a valve rod nut cover, a valve rod nut, a gland, bearings, a valve rod guide, a valve body, a packing gland, a splitring, a packing pressing sleeve, fillers, a packing pressure pad and a valve rod. The valve body is formed integrally by a support and a lower valve body; T-shaped screw threads and splines are respectively arranged at the upper end and on the upper portion of the valve rod; a valve clack is arranged at the lower end of the valve rod, and the valve rod and the valve clack are integrated; the valveclack corresponds to an inner passage of the valve rod; the splines on the valve rod are slidably connected with the valve rod guide after the upper end of the valve rod sequentially passes through the valve body, the packing pressure pad, the fillers, the packing pressing sleeve, the split ring and the packing gland; the T-shaped screw threads are in screw connection with an inner cavity of thevalve rod nut; the gland is mounted at the upper end of the valve body; the upper portion of the valve rod nut is in screw connection with the valve rod nut cover after passing through a central holeof the gland and the hand wheel; the bearings are arranged between the valve rod guide and the valve rod nut and also between the valve rod nut and the gland; the packing gland and the upper portion of the lower valve body are screwed via fastening screw bolts. The stop valve has the advantages of simple structure, convenient installation, high precision and long service life.

Description

Stop valve

Technical field

The utility model relates to a kind of valve, refers to a kind of stop valve especially.

Background technique

Existing stop valve as shown in Figure 1, comprise valve body 1 ', valve rod 2 ', flap 3 ', upper bracket 4 ', lower support frame 5 ', bearing 6 ', bearing gland 7 ', Stem Mut 8 ', handwheel 9 ', Gland 10 ', filler 11 ' and Packing seat 19 ', valve body 1 ' is provided with the passage 12 ' that connects its valve pocket, the lower end that flap 3 ' is loaded on valve rod 2 ' places in the valve pocket, and corresponding with passage 12 ', be provided with filler 11 ' and Packing seat 19 ' between valve body 1 ' cavity inner wall and the valve rod 2 '.The outer surface of upper of valve body 1 ' is by ending a screw 13 ' and splitting annulus 14 ' and be connected with lower support frame 5 ', upper bracket 4 ' bottom and lower support frame 5 ' top are threaded togather, the top of valve body 1 ' is by straight pin 15 ', bolt 16 ' and nut 17 ' are connected with Gland 10 ', the cavity that Gland 10 ' places upper bracket 4 ' is passed in valve rod 2 ' upper end, the boss of the lower end of handwheel 9 ' is loaded in the groove on Stem Mut 8 ' top, Stem Mut 8 ' places upper bracket 4 ' top inner chamber, between Stem Mut 8 ' and upper bracket 4 ' inwall, be provided with bearing 6 ' between the outside of upper bracket 4 ' inwall and valve rod 2 ', upper bracket 4 ' the top bearing gland 7 ' that has been threaded, Stem Mut 8 ' inner chamber is threaded with valve rod 2 ' upper end, between the inwall of the valve rod 2 ' outside and upper bracket 4 ', be provided with flat key 18 ', the shortcoming that this stop valve exists is: component are too many, complexity is installed, and the validity of this stop valve descends along with the wearing and tearing of valve rod use, reduce working life.

The model utility content

The purpose of this utility model provides a kind of stop valve, and it is simple in structure, easy for installation, validity is high and long service life.

In order to realize such scheme, technical solution of the present utility model is: a kind of stop valve, comprising handwheel, the Stem Mut lid, Stem Mut, gland, bearing, stem guiding, valve body, Gland, divided ring, the filler gland, filler, filler pressure pad and valve rod, described valve body is integrally formed by the support and the following valve body on top, described valve rod upper end and top are respectively arranged with T shape screw thread and spline, it is one that described valve rod lower end is provided with flap and valve rod and flap, described flap is corresponding with the passage in the valve body, described valve rod upper end is passed body cavity successively, the filler pressure pad, filler, the filler gland, divided ring, behind the Gland, the spline and the stem guiding on described valve rod top are slidingly connected, the T shape screw thread and the Stem Mut thread in inner cavity of described valve rod upper end are spirally connected, gland is installed on the valve body upper end, the gland center hole is passed on described Stem Mut top, be spirally connected fixing with the Stem Mut lid behind the handwheel, between described stem guiding and the Stem Mut, be provided with bearing between described Stem Mut and the gland, it is fixing to be spirally connected by clamping bolt between described Gland and the following valve body top.

The utility model stop valve, wherein said gland and valve body upper end are spirally connected fixing by screw.

The utility model stop valve, wherein said bearing are needle bearing.

The utility model stop valve, wherein said filler are graphite packing.

The utility model stop valve, wherein said filler pressure pad is a metal material.

The utility model stop valve, wherein said valve body adopts Martensitic Stain Less Steel 17-4P.

After adopting such scheme, the valve body of the utility model stop valve is integrally formed with following valve body by the support on top, valve rod and flap one, therefore greatly reduce the wearing and tearing between valve rod and the valve body, spline on stem guiding and the valve rod is slidingly connected in addition, therefore valve rod is not easy to produce off-centre after long-time the use, and it uses the working life of the high stop valve simultaneously of validity elongated relatively, and these stop valve parts are installed simple and convenient less.

Below in conjunction with drawings and Examples the utility model is further specified.

Description of drawings

Fig. 1 is the structural representation of existing stop valve;

Fig. 2 is the structural representation of the utility model stop valve.

Embodiment

The structural representation of the utility model stop valve as shown in Figure 2, this stop valve comprise valve body 7, Gland 8, divided ring 9, filler gland 10, the graphite packing 11 of handwheel 1, Stem Mut lid 2, Stem Mut 3, gland 4, needle bearing 5, stem guiding 6, Martensitic Stain Less Steel 17-4P material, the filler pressure pad 12 and the valve rod 13 of metal material.

Valve body 7 is by the support 71 on top and valve body 72 is integrally formed down.Following valve body 72 inner chambers are provided with passage 721, valve rod 13 upper ends and top are respectively arranged with T shape screw thread 131 and spline 133, valve rod 13 lower ends are provided with flap 132 and valve rod 13 is one with flap 132, flap 132 is corresponding with the passage 721 in the valve body 7, valve rod 13 upper ends are passed valve body 7 inner chambers successively, filler pressure pad 12, graphite packing 11, filler gland 10, divided ring 9, behind the Gland 8, the spline 133 and the stem guiding 6 on valve rod 13 tops are slidingly connected, the T shape screw thread 131 and Stem Mut 3 thread in inner cavity 31 of valve rod 13 upper ends are spirally connected, and gland 4 is spirally connected fixing with valve body 7 upper ends by screw 15.Stem Mut 3 tops are passed behind gland 4 center holes, handwheel 1 center to be spirally connected with Stem Mut lid 2 and are fixed together, between stem guiding 6 and the Stem Mut 3, be provided with needle bearing 5 between Stem Mut 3 and the gland 4, be spirally connected fixing by clamping bolt 14 between Gland 10 and following valve body 72 tops.

The valve body 7 of the utility model stop valve is integrally formed by the support 71 and the following valve body 72 on top, valve rod 13 is integrally formed with flap 132, and the spline 133 on stem guiding 6 and the valve rod 13 is slidingly connected, it greatly reduces the wearing and tearing between valve rod 13 and the valve body 7, valve rod 13 is not easy to produce eccentric after long-time the use, it uses the working life of the high stop valve simultaneously of validity elongated relatively, and these stop valve parts are installed simple and convenient less.

The above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in related domain make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.

Claims

1, a kind of stop valve, it is characterized in that: comprise handwheel (1), Stem Mut lid (2), Stem Mut (3), gland (4), bearing (5), stem guiding (6), valve body (7), Gland (8), divided ring (9), filler gland (10), filler (11), filler pressure pad (12) and valve rod (13), described valve body (7) is integrally formed by the support (71) and the following valve body (72) on top, described valve rod (13) upper end and top are respectively arranged with T shape screw thread (131) and spline (133), described valve rod (13) lower end is provided with flap (132) and valve rod (13) is an one with flap (132), described flap (132) is corresponding with the passage (721) in the valve body, described valve rod (13) upper end is passed valve body (7) inner chamber successively, filler pressure pad (12), filler (11), filler gland (10), divided ring (9), behind the Gland (8), the spline (133) on described valve rod (13) top is slidingly connected with stem guiding (6), the T shape screw thread (131) of described valve rod (13) upper end is spirally connected with Stem Mut (3) thread in inner cavity, gland (4) is installed on valve body (7) upper end, gland (4) center hole is passed on described Stem Mut (3) top, handwheel (1) back is spirally connected fixing with Stem Mut lid (2), between described stem guiding (6) and the Stem Mut (3), be provided with bearing (5) between described Stem Mut (3) and the gland (4), be spirally connected fixing by clamping bolt (14) between described Gland (10) and following valve body (72) top.

2, stop valve as claimed in claim 1 is characterized in that: described gland (4) is spirally connected fixing with valve body (7) upper end by screw (15).

3, stop valve as claimed in claim 2 is characterized in that: described bearing (5) is a needle bearing.

4, stop valve as claimed in claim 3 is characterized in that: described filler (11) is graphite packing.

5, stop valve as claimed in claim 4 is characterized in that: described filler pressure pad (12) is a metal material.

6, stop valve as claimed in claim 5 is characterized in that: described valve body (7) adopts Martensitic Stain Less Steel 17-4P.