CN207018599U - A kind of plug valve bottom cover structure - Google Patents

Abstract

It the utility model is related to a kind of plug valve bottom cover structure, including bottom, there is lower valve rod aperture in the bottom, the bottom lower sides have mudhole, the mudhole communicates with lower valve rod aperture, there are the drain outlet being vertically arranged, drain outlet one end insertion bottom upper surface in the bottom, the drain outlet other end connects with mudhole.Bottom in the utility model is provided with mudhole in lower sides, is easy to valve to carry out blowdown, improves the performance of valve, is advantageous to extend the Acceptable life of valve；It uses the simple plug screw formula pollution discharge structure of one logical two vertical connection, protects the effective blowdown of positive valve, and simple to operate.

Description

A kind of plug valve bottom cover structure

Technical field

It the utility model is related to valve technology field, more particularly to a kind of plug valve bottom cover structure.

Background technology

Bracing type plug valve is the rotary valve that closure member is plunger shape, makes valve by being rotated by 90 ° and moving up or down Passway beyond the Great Wall is identical with the passway on valve body or separates, and realizes a kind of valve being turned on and off, and it is mainly by valve Body, bonnet, drift ping, flap, valve rod and rail brackets etc. are formed, and existing bracing type plug valve, its bottom cover structure is mostly close Enclosed screw adjustment structure, for the valve used for a long time on pipeline, is unfavorable for blowdown, easily influence valve performance and Life-span；In addition, its bottom is merely using carrying out sealing cooperation between rubber ring and valve body, and because long-time uses, ageing of rubber, In the presence of the risk of leakage.

Utility model content

The utility model aims to provide plug valve bottom cover structure, can solve the problems, such as that plug valve bottom contamination is difficult to exclude.

To reach above-mentioned purpose, the technical solution adopted in the utility model is as follows：

A kind of plug valve bottom cover structure, including bottom, there is lower valve rod aperture inside the bottom, the bottom lower sides have Mudhole, the mudhole communicate with lower valve rod aperture, there is the drain outlet being vertically arranged, the drain outlet one in the bottom End insertion bottom upper surface, the drain outlet other end connect with mudhole.

Further, the mudhole is horizontally disposed with.

Further, a kind of plug valve bottom cover structure also includes valve body, drift ping and lower valve rod, and the lower valve rod is located at drift ping Lower end, the bottom are located at below valve body and affixed with valve body, and for the drift ping in valve body, the lower valve rod is mounted in lower valve rod Coordinate in hole and with lower valve rod interporal lacuna, the drain outlet connects valve inner.

It is further preferred that the blowdown outer end of hole is provided with plug screw.

Wherein, there is convex neck the bottom upper end, and the convex neck is put in valve body, and rubber is provided between the convex neck and valve body Circle.

Sealing ring is further provided between the lower surface of the valve body and the upper surface of bottom.

Wherein, the lower surface of the valve body is provided with annular groove, and the sealing ring is arranged in annular groove.

Further, axle sleeve is provided between the lower valve rod and bottom.Axle sleeve is set to coordinate drift ping lower valve inside bottom Bar, similar to sliding bearing, the rotation beneficial to drift ping and move up and down to a certain extent, and protect drift ping lower valve rod excessively by Damage.Axle sleeve is enhancing PTFE.

It is further preferred that the axle sleeve upper end is provided with gland, the gland and bottom are affixed, to fix the position of axle sleeve Put.

Wherein, the gland coordinates with bottom seam.

Compared with prior art, the utility model has the advantages that：

1. the bottom in the utility model is provided with mudhole in lower sides, it is easy to valve to carry out blowdown, improves valve The performance of door, be advantageous to extend the Acceptable life of valve；

2. the utility model is protected positive valve and effectively arranged using the simple plug screw formula pollution discharge structure of one logical two vertical connection Dirt, and it is simple to operate；

3. the utility model forms end face seal using sealing ring in valve body end face and bottom end face, it is subject to rubber ring in valve The circumferential seal cooperatively formed on the outside of internal side and bottom, forms double containment form, improves close between valve bottom and valve body Sealing property.

Brief description of the drawings

Fig. 1 is the structural representation of embodiment 1；

Fig. 2 is the structural representation of embodiment 2；

In figure：Under 1- rubber rings, 2- valve bodies, 3- sealing rings, 4- bottoms, 5- bolts, 6- glands, 7- axle sleeves, 8- plug screws, 9- Valve rod, 10- mudholes, 11- drain outlets, 12- seams.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality It is further elaborated with new.

Embodiment 1

As shown in figure 1, plug valve bottom cover structure disclosed in the present embodiment, including bottom 4, have inside bottom 4 and lower valve rod Hole, the lower sides of bottom 4 have mudhole 10, and mudhole 10 communicates with lower valve rod aperture, there is the drain outlet being vertically arranged in bottom 4 11, the one end of drain outlet 11 insertion bottom 4 upper surface, the other end of drain outlet 11 connects with mudhole 10.Mudhole 10 is horizontal Set, mudhole 10 is furnished with sealing-plug.

The present embodiment is provided with mudhole in bottom lower sides, carries out blowdown using the convenience valve of the bottom, utilizes Plug screw is blocked, and during blowdown, blowdown operation can be carried out by unloading plug screw, convenient and simple, and waste removal position can be as needed in bottom Circumference is configured.

Embodiment 2

The present embodiment and the difference of embodiment 1 are：As shown in Fig. 2 plug valve bottom cover structure disclosed in the present embodiment is also Including valve body 2, drift ping and lower valve rod 9, lower valve rod 9 is located at drift ping lower end, and bottom 4 is located at the lower section of valve body 2 and affixed with valve body 2, Drift ping is in valve body 2, and lower valve rod 9 is mounted in lower valve rod aperture and coordinated with lower valve rod interporal lacuna, and drain outlet 11 connects valve body 2 Inside, the outer end of mudhole 10 are provided with plug screw 8.

There is convex neck the upper end of bottom 4, and convex neck is put in valve body 2, and rubber ring 1 is provided between convex neck and valve body 2.To make valve close Sealing property is more perfect, and valve body lower end face opens up annular groove and installs sealing ring 3 additional, with bottom 4 with end face seal is combined into, with rubber ring 1 circumferential seal forms double containment, it is ensured that the sealing property of valve reaches optimal.

Axle sleeve 7 is provided between lower valve rod 9 and bottom 4, sets axle sleeve to coordinate drift ping lower valve rod inside bottom, similar to cunning Dynamic bearing, the rotation beneficial to drift ping and move up and down to a certain extent, and protect drift ping lower valve rod excessively impaired, axle sleeve 7 is Strengthen PTFE.As shown in Figure 1, 2, the upper end of axle sleeve 7 is provided with gland 6, has a seam 12 inside bottom 4, fixed beneficial to gland 6 Position, gland 6 are fastened by bolt 5 and bottom 4, avoid axle sleeve 7 from being moved up and down with drift ping 9.

The space that bottom coordinates with valve inner, bottom and lower valve rod in the present embodiment is communicated in same mudhole, its Positional structure sets compact and ingenious, is blocked using plug screw, and during blowdown, blowdown operation can be carried out simultaneously by unloading plug screw, side Just it is simple.

Because bracing type plug valve is used for blocking medium on pipeline, bottom can precipitate dregs etc. unavoidably during use Accumulation, easily influences valve performance, and the utility model is particularly suitable for use in bracing type plug valve.Use the utility model The bracing type stopcock structure of structure is stable, and sealing property is reliable, operates steadily, flexibly, and installation and debugging are convenient, long lifespan, and Can timely and effective blowdown.

Certainly, the utility model can also have other numerous embodiments, without departing substantially from the utility model spirit and its essence In the case of, those skilled in the art can make various corresponding changes and deformation, but these according to the utility model Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.

Claims (10)

1. a kind of plug valve bottom cover structure, including bottom (4), the bottom (4) is internal lower valve rod aperture, it is characterised in that:Institute Stating bottom (4) lower sides has mudhole (10), and the mudhole (10) communicates with lower valve rod aperture, has in the bottom (4) perpendicular The drain outlet (11) directly set, described drain outlet (11) one end penetrate bottom (4) inside upper surface, the drain outlet (11) other end connects with mudhole (10).

2. plug valve bottom cover structure according to claim 1, it is characterised in that：The mudhole (10) is horizontally disposed.

3. plug valve bottom cover structure according to claim 1, it is characterised in that：Also include valve body (2), drift ping and lower valve rod (9), the lower valve rod (9) is located at drift ping lower end, the bottom (4) be located at it is below valve body (2) and affixed with valve body (2), it is described Drift ping is in valve body (2), and the lower valve rod (9) is mounted in lower valve rod aperture and coordinated with lower valve rod interporal lacuna, and the blowdown is led to Road (11) connection valve body (2) is internal.

4. the plug valve bottom cover structure according to claim 1 or 3, it is characterised in that：Mudhole (10) outer end is provided with Plug screw (8).

5. plug valve bottom cover structure according to claim 3, it is characterised in that：There is convex neck bottom (4) upper end, described Convex neck is put in valve body (2), and rubber ring (1) is provided between the convex neck and valve body (2).

6. the plug valve bottom cover structure according to claim 3 or 5, it is characterised in that：The lower surface and bottom of the valve body (2) Sealing ring (3) is provided between the upper surface of lid (4).

7. plug valve bottom cover structure according to claim 6, it is characterised in that：The lower surface of the valve body (2) is provided with ring Shape groove, the sealing ring (3) are arranged in annular groove.

8. plug valve bottom cover structure according to claim 3, it is characterised in that：Between the lower valve rod (9) and bottom (4) Provided with axle sleeve (7).

9. plug valve bottom cover structure according to claim 8, it is characterised in that：Axle sleeve (7) upper end is provided with gland (6), the gland (6) and bottom (4) are affixed.

10. plug valve bottom cover structure according to claim 9, it is characterised in that：The gland (6) and bottom (4) seam Coordinate.