CN201764089U

CN201764089U - Small-diameter fully welded ball valve

Info

Publication number: CN201764089U
Application number: CN2010205287062U
Authority: CN
Inventors: 蔡毅; 刘庆国; 陈广兵; 刘汉钦
Original assignee: SHANGHAI WEILUN VALVE CO LTD
Current assignee: SHANGHAI WEILUN VALVE CO LTD
Priority date: 2010-09-14
Filing date: 2010-09-14
Publication date: 2011-03-16
Anticipated expiration: 2020-09-14

Abstract

The utility model discloses a small-diameter fully welded ball valve comprising a valve pipe. Two connection pipes are inserted in the two ends of the valve pipe and welded with the valve pipe. The internal top ends of the two connection pipes are provided with two valve seat component, between which are disposed a ball. A pipe cap is welded on the side surface of the valve pipe use to prevent a valve rod from flying off. The valve rod connected with the ball is disposed on the axle center of the pipe cap. Sealing fillers are disposed between the inside of the pipe cap and the valve rod, besides, a filler pressing cover and a pipe cover cap. The inside and the outside of the filler pressing cover are provided with the O-shaped sealing ring, and the top of the valve rod is provided with a hexagonal wrench connection groove. The utility model adopts the inner hexagonal wrench, has a stable, reasonable structure, non leakage and strong universality. The utility model has the antistatic function after the further improvement. In addition, the utility model has advantages of convenient raw material drawing, low costs, beautiful appearance, strong operation interchangeability, and small installation room.

Description

A kind of small-bore all-welded ball valve

Technical field

The utility model relates to a kind of ball valve, relates in particular to a kind of small-bore all-welded ball valve.

Background technique

Because China urban construction and development is quick, its auxiliary facility gas distributing system construction is also greatly developed at present.Because rock gas has rock gas and has extremely strong combustibility, there is not any possibility extremely to external leakage so must guarantee the gas in the pipeline; For the generation that prevents to explode, require the valve on the pipeline must have strict electrostatic-proof function.In order to reduce installing space, require valve to take up room and dwindle as far as possible; For easy to operate, require the handle generalization of trying one's best.Existing ordinary construction ball valve is bulky, and it is many to take up room, and seal point is many, and the hidden danger of leakage is big; Existing common all-welded ball valve, simple in structure, it is little to take up room, but operating grip is emblem mark, and each factory's product can't exchange, and versatility is poor.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of full welding, antistatic, the general small-bore all-welded ball valve of handle.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of small-bore all-welded ball valve, it comprises the valve pipe, insert and welding connecting tube at two ends at the valve pipe, the top of the inside of two connecting tubes all is provided with valve component, between two valve components, be provided with spheroid, prevent the pipe lid that valve rod flies out in the welding of the side of valve pipe, on the Guan Gai axle center, be provided with the valve rod that is connected with spheroid, it is characterized in that: between described pipe lid inside and the valve rod stuffing box packing is arranged, the top filler clamping sleeve and the pipe block of being provided with successively of stuffing box packing, the inboard and the outside of filler clamping sleeve all is provided with " O " shape seal ring, the top of the valve rod hexagon wrench connecting groove that sets up standard.

The static that produces in time with valve event the time is derived, and has avoided the generation of fire, has spring eye below spheroid, and spring and antistatic pin are housed in the hole.

In order to make ball valve be accurately positioned in standard-sized sheet or complete shut-down state, the utility model also comprises the ball valve position structure, it is between filler clamping sleeve and pipe block a positioning ring to be set, fixedly connected with the pipe lid in the outside of positioning ring, there is one section annular groove the inboard of positioning ring, installing and locating pin on the valve rod of annular groove corresponding position.

Fixedlying connected with the pipe lid in the outside of described positioning ring, is to realize by the fixedly pin that is installed between positioning ring and the pipe lid.

The beneficial effects of the utility model are that the valve motif material can all adopt the tubing welding fabrication of molecular arrangement densification, has firm structure, the hidden danger of having avoided valve body to leak; Pipe covers between inside and the valve rod stuffing box packing, and the inboard and the outside that are provided with filler clamping sleeve clamping sleeve above the stuffing box packing all are provided with " O " shape seal ring, good sealing effect; The top of the valve rod hexagon wrench connecting groove that sets up standard, as long as the standard inner hexagon spanner of buying same size just can be realized exchange on market, versatility is stronger.Further, design has a spring eye under the utility model spheroid, and the static that spring that is equipped with in the hole and antistatic pin produce during with valve event is derived, and has avoided the generation of fire.Between filler clamping sleeve and pipe block, a positioning ring is set, there is one section annular groove the inboard of positioning ring, installing and locating pin on the valve rod of annular groove corresponding position, locating stud can only rotate in the scope of 0～90 degree at annular groove, accurately the closing of position-sensing switch, semi-closed and full-gear.In addition, it is convenient that it also has raw material drawing, and cost is low, beautiful shape, and operation interchangeability is strong, and installing space is little, compares with ball valve of the same type, and stronger competitive ability is arranged.

Description of drawings

Fig. 1 is the outside schematic representation of a kind of small-bore all-welded ball valve of the utility model;

Fig. 2 is the sectional view of a kind of small-bore all-welded ball valve of the utility model;

Fig. 3 is Fig. 2 AA sectional view;

Among the figure: 1, connecting tube, 2, the valve pipe, 3, valve component, 4, spheroid, 5, the antistatic pin, 6, spring, 7, Guan Gai, 8, positioning ring, 9, the pipe block, 10, standard inner hexagon spanner, 11, the filler gland, 12, valve rod, 13, stuffing box packing, 14, " O " shape seal ring, 15, the location pin, 16, fixing pin, 17, annular groove, 18, the hexagon wrench connecting groove.

Embodiment

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

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of small-bore all-welded ball valve, it comprises valve pipe 2, insert and welding connecting tube 1 at two ends at valve pipe 2, the top of the inside of two connecting tubes 1 all is provided with valve component 3, between two valve components 3, be provided with spheroid 4, prevent the pipe lid 7 that valve rod 12 flies out in the welding of the side of valve pipe 2, cover and be provided with the valve rod 12 that is connected with spheroid 4 on 7 axle center at pipe, between described pipe lid 7 inside and the valve rod 12 stuffing box packing 13 is arranged, stuffing box packing 13 top is provided with filler clamping sleeve 11 and pipe block 9 successively, and the inboard and the outside of filler clamping sleeve 11 all is provided with " O " shape seal ring 14, the top of valve rod 12 hexagon wrench 10 connecting grooves 18 that set up standard.Below spheroid 4, have spring eye, spring 6 and antistatic pin 5 are housed in the hole.Be between filler clamping sleeve 11 and pipe block 9, a positioning ring 8 to be set, the outside of positioning ring 8 with the pipe cover 7 between fixedly pin 16 fixedly connected, there is one section annular groove 17 inboard of positioning ring 8, installing and locating pin 15 on the valve rod 12 of annular groove 17 corresponding positions.

Claims

1. small-bore all-welded ball valve, it comprises valve pipe (2), insert and welding connecting tube (1) at two ends at valve pipe (2), the top of the inside of two connecting tubes (1) all is provided with valve component (3), between two valve components (3), be provided with spheroid (4), prevent the pipe lid (7) that valve rod (12) flies out in the welding of the side of valve pipe (2), on Guan Gai (7) axle center, be provided with the valve rod (12) that is connected with spheroid (4), it is characterized in that: between described pipe lid (7) inside and the valve rod (12) stuffing box packing (13) is arranged, the top filler clamping sleeve (11) and the pipe block (9) of being provided with successively of stuffing box packing (13), the inboard and the outside of filler clamping sleeve (11) all is provided with " O " shape seal ring (14), the top of valve rod (12) hexagon wrench (10) connecting groove (18) that sets up standard.

2. according to the described small-bore all-welded ball valve of claim 1, it is characterized in that: have spring eye in spheroid (4) below, spring (6) and antistatic pin (5) are housed in the hole.

3. according to claim 1 or 2 described small-bore all-welded ball valves, it is characterized in that: between filler clamping sleeve (11) and pipe block (9), a positioning ring (8) is set, fixedly connected with pipe lid (7) in the outside of positioning ring (8), there is one section annular groove (17) inboard of positioning ring (8), and the valve rod (12) of annular groove (17) corresponding position is gone up installing and locating pin (15).

4. according to the described small-bore all-welded ball valve of claim 3, it is characterized in that: fixedlying connected with pipe lid (7) in the outside of described positioning ring (8) is to realize by the fixedly pin (16) that is installed in positioning ring (8) and manage between the lid (7).