CN202140677U

CN202140677U - Combination valve cover type stop valve

Info

Publication number: CN202140677U
Application number: CN201120209530U
Authority: CN
Inventors: 陈雨民
Original assignee: ZHENJIANG CITY HUAYANG ELECTROMECHANICAL MANUFACTURE CO Ltd
Current assignee: ZHENJIANG CITY HUAYANG ELECTROMECHANICAL MANUFACTURE CO Ltd
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2012-02-08
Anticipated expiration: 2021-06-21

Abstract

The utility model discloses a combination valve cover type stop valve, which comprises a valve body, a valve rod and a valve core. The valve core is connected to the valve rod, the valve core is disposed inside the valve body through a valve cover, a thread connection port protruding outwards is disposed in the middle of the valve body, and the valve cover is connected to the thread connection port through a union nut. The valve rod is arranged axially in the center of the valve cover, and the lower end of the valve rod is connected to the valve core disposed inside the valve body. A packing pad, a packing support, packing and an upper packing pad are arranged sequentially from bottom to top between the valve cover and the valve rod, and a locking nut is used for fixed connection with the valve cover above the upper packing pad. Due to the fact that the valve core and the valve are connected in riveting mode, the combination valve cover type stop valve avoids scratches caused by friction between a valve core sealing face and the valve body when the valve core sealing face is in rotation, accordingly, rate of possible leakage is reduced, sealing property is greatly improved, and service life of the valve is prolonged.

Description

Combined valve cover type break valve

Technical field

The utility model relates to a kind of stop valve, and a kind of specifically combined valve cover type break valve belongs to the technical field that valve is made.

Background technique

Because valve is of many uses; Be in great demand; The producer of domestic production valve has carried out a series of improvement and raising with different techniques and innovation means to the technology of valve: mainly contain through changing the structure and the close joint form of valve, improve mechanical sealing performance; On the flap and valve seat construction of the novel stop valve that dams, changed the shortcoming that flap comes off easily, regulated flow, and made it have sensitivity; Installation, maintenance, the convenient disassembly of adopting new technology and making valve; The valve products that uses is under special circumstances passed through its manufacturing structure of change, make it possess difference in functionality and have automatic on-off rate-of flow is controlled; The product that uses to different industries adopts different production methodes, possesses different performance requirements is arranged; The Sealing or the filler that adopt special material to process reach purpose that high temperature resistant, high pressure, working life prolong etc.

Above all technological innovations have had certain impetus to the performance raising of stop valve; But it is not strong still to exist reliability in the manufacturing process of valve and structure aspects; Sealability can not get ensureing that working life is not long that threaded stem receives the corrosion of medium to be prone to get rusty for a long time; The valve latus rectum has hindered the MEDIA FLOW flux of pipeline to a certain extent less than the size of pipeline.

The model utility content

The utility model technical problem to be solved is, overcomes the shortcoming of existing technology, proposes a kind of combined valve cover type break valve, has safe and reliablely, and practicability is good, the big and strong characteristics of corrosion resistance of amount of flow.

In order to solve above technical problem; The utility model provides a kind of combined valve cover type break valve; Comprise valve body, valve rod and spool, spool is connected with valve rod, and through valve gap spool is arranged on valve inner; Be provided with the mouth that is threaded to outer lug at the valve body middle part, valve gap is connected on the mouth that is threaded through the associating nut; Center at valve gap is axially arranged with valve rod, and the valve rod lower end links to each other with the spool that places valve inner; Be provided with Packing seat, filler support, filler and last Packing seat between valve gap and the valve rod from bottom to top successively, and above last Packing seat, be connected fixing with valve gap by locking nut.

The technological scheme that the utility model further limits is: aforesaid combined valve cover type break valve, valve rod and spool constitute integral body by the activity clencher riveted joint.

Aforesaid combined valve cover type break valve, the middle part of valve gap is provided with the thin slice nut, and the panel installation function of valve is provided, and is convenient under the working environment of harshness, use.

Further, above-mentioned combined valve cover type break valve, spool is made up of the cobalt base alloy ball, improves the corrosion resistance and the wear-resisting property of spool, prolongs the working life of spool.

The utility model is able to bear more high pressure through changing the structure of valve gap, and can prevent effectively that the accident of valve is loosening; This is designed with and is beneficial to the structure that lock bolt can be adjusted filler when valve opening, makes valve in use for some time, can be under the situation of not dismantling valve; Filler is adjusted fastening, continue to be kept the function of use of valve, meanwhile change the screw position of valve rod; The helical thread portion that is valve rod breaks away from fed sheet of a media, protect it from corrosion.

The beneficial effect of the utility model is: the utility model uses the combined type valve gap, makes valve in the process of circulation, can bear higher pressure, and can prevent that the accident of valve from unclamping; Can the adjusting lock nut, make valve close in use or open all need not to dismantle valve and can both adjust filler; Owing to changed the screw thread of stem structure, having avoided screw thread is that corrosion is out of shape owing to receiving medium; Spool adopts the cobalt base alloy spherical structure, makes the sealability of valve obtain further raising, can adapt to harsh working environment; And have multiple installation form, can adapt to that stage is fixed, panel is installed and with being connected of actuator etc., thus this product have design creativeness, to use be the advance and the favorable social and economic benefits of adaptability, performance.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: 1. Packing seat 10. fillers 11. fillers support 18. welded pipes of 12. Packing seats, 13. associating nuts, 14. spools, 15. valve bodies, 16. pads, 17. nuts on the handle 2. handle thimbles 3. Cock screws 4. valve rods 5. filler bolts 6. locking nuts 7. valve gaps 8. thin slice nuts 9..

Embodiment

Embodiment 1

A kind of combined valve cover type break valve that present embodiment provides, structure is as shown in Figure 1, comprises valve body 15, valve rod 4 and spool 14; Spool 14 is made up of the cobalt base alloy ball; Spool 14 is connected with valve rod 4, and through valve gap 7 spool 14 is positioned at valve body 15 inside, and the middle part of valve gap 7 is provided with thin slice nut 8; Be provided with the mouth that is threaded to outer lug at valve body 15 middle parts, valve gap 7 is connected on the mouth that is threaded through associating nut 13; Be axially arranged with valve rod 14 at the center of valve gap 7, valve rod 4 lower ends link to each other with placing valve body 15 inner spools 14; Be provided with Packing seat 12, filler support 11, filler 10 and last Packing seat 9 between valve gap 7 and the valve rod 4 from bottom to top successively, and above last Packing seat 9, be connected fixing with valve gap 7 by locking nut 6; Valve rod 4 constitutes integral body with spool 14 by the activity clencher riveted joint.

In the present embodiment; The screw thread of valve rod 4 is arranged on the top of stuffing box packing 10; Avoided medium to the erosion of threaded stem and washing away of double thread oiling agent, the design of locking nut 6 and filler bolt 5 makes valve can both regulate filler in the position of closing and opening; Through optimization and improvement to valve flowing channel; Make it to become all-pass footpath runner; Improve the negotiability of valve; The Placement of additional valves is various, and modes such as two cutting ferrule connections, loose joint butt welding, internal thread, outside thread, butt welding, SOCKETWELDING connection are arranged, and present embodiment just adopts the outside thread Placement to be connected with other pipelines.

Except that the foregoing description, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. combined valve cover type break valve; Comprise valve body, valve rod and spool; Said spool is connected with valve rod; And said spool is arranged on said valve inner through valve gap, it is characterized in that: be provided with the mouth that is threaded to outer lug at said valve body middle part, said valve gap is connected on the said mouth that is threaded through the associating nut; Be axially arranged with said valve rod at the center of said valve gap, said valve rod lower end links to each other with the spool that places said valve inner; Be provided with Packing seat, filler support, filler and last Packing seat between said valve gap and the said valve rod from bottom to top successively, and on said Packing seat above be connected with said valve gap by locking nut fixing.

2. combined valve cover type break valve according to claim 1 is characterized in that: said valve rod and spool constitute integral body by the activity clencher riveted joint.

3. combined valve cover type break valve according to claim 1 is characterized in that: the middle part of said valve gap is provided with the thin slice nut.

4. combined valve cover type break valve according to claim 1 is characterized in that: said spool is made up of the cobalt base alloy ball.