CN206802325U

CN206802325U - Safety type stop valve

Info

Publication number: CN206802325U
Application number: CN201720621873.3U
Authority: CN
Inventors: 高永祥
Original assignee: TIANJIN HUALIDA VALVE Co Ltd
Current assignee: TIANJIN HUALIDA VALVE Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2017-12-26
Anticipated expiration: 2027-05-31

Abstract

The utility model discloses a kind of safety type stop valve, including valve body, bonnet, pressure cap, valve rod, trim ring, flap, clutch plate is socketed with the valve rod, clutch plate is synchronized with the movement with valve rod, manual disk upper end is connected with pressure connecting disk by stage clip, the compression degree of stage clip is adjusted by adjusting the pressure connecting disk, and then adjust the stage clip elastic force suffered by manual disk, the manual disk upper surface is provided with the lower engagement fluted disc of ring-type, manual disk lower surface is provided with engagement fluted disc, the lower engagement fluted disc and upper engagement fluted disc are used in combination, engagement connection.Manually the upper engaging tooth of disk drives the lower engaging tooth of clutch plate so as to which rotary valve rod realizes the opening and closing of stop valve, by the pressure size for adjusting stage clip, the torque size being applied on valve rod can be adjusted, when operational torque is more than the frictional force between upper engaging tooth and lower engaging tooth, upper engaging tooth slides from lower engaging tooth, depart from, avoid and damage valve because torque is excessive.

Description

Safety type stop valve

Technical field

Valve mechanism technical field is the utility model is related to, more particularly to a kind of safety type stop valve.

Background technology

Stop valve, also known as pipe valve valve, belong to forced seal formula valve, be a kind of one of most popular valve.Cut-off Valve relies on valve stem pressure, valve clack sealing surface is brought into close contact with sealing surface of seat, prevents flow of media, is unidirectionally flowed because only being permitted medium It is dynamic, so directional during installation.Stop valve can be divided into Oblique Stop Valves, angle stop valves, plunger stop valve, upper screw thread Valve rod stop valve, lower threaded stem stop valve etc., they have, and durable, Lift is little, easy to manufacture, easy to maintenance, no The characteristics of being only applicable to mesolow, and being applied to high pressure.

In the prior art, stop valve is typically manually opened, and is rigidly connected between handwheel and power transmission shaft, right before dispatching from the factory Valve carries out operational torque measure, and design load is less than typically under the premise of sealing property is ensured and thinks qualified.But at the scene During installing and using, because the factors such as valve mass deviation, operating mode difference, instrument improper use, personnel's sense of responsibility can cause Operating physical force is excessive, so as to cause valve to damage or fail.

Utility model content

In view of the above-mentioned problems, the invention provides a kind of safety type stop valve.

To realize the purpose of this utility model, the utility model provides a kind of safety type stop valve, including valve body, valve Lid, pressure cap, valve rod, trim ring, flap, clutch plate are socketed with the valve rod, clutch plate is synchronized with the movement with valve rod, clutch plate upper end Lug boss is provided with, lug boss is socketed with manual disk, and the manual disk is slidably connected with lug boss, and manual disk upper end passes through stage clip Pressure connecting disk is connected with, the pressure connecting disk is threadedly coupled with the lug boss of clutch plate, and stage clip is adjusted by adjusting the pressure connecting disk Compression degree, and then the stage clip elastic force suffered by manual disk is adjusted, the manual disk upper surface is provided with the lower engagement of ring-type Fluted disc, manual disk lower surface are provided with engagement fluted disc, and the lower engagement fluted disc and upper engagement fluted disc are used in combination, and engagement connects Connect.

Compared with prior art, the beneficial effects of the utility model are that manually the upper engaging tooth of disk drives clutch plate Lower engaging tooth realize the opening and closing of stop valve so as to rotary valve rod, by adjusting the pressure size of stage clip, can adjust The torque size being applied on valve rod, when operational torque is more than the frictional force between upper engaging tooth and lower engaging tooth, upper engagement Tooth slides from lower engaging tooth, departs from, and manual disk can not drive driven disc spins, avoids and damages valve because torque is excessive Door.

Brief description of the drawings

Fig. 1 show the structural representation of the application；

Fig. 2 show the upper engaging tooth of the application and the attachment structure schematic diagram of lower engaging tooth；

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place The specific embodiment of description only to explain the utility model, is not used to limit the utility model.

It should be noted that " connection " described herein and the word for expressing " connection ", such as " being connected ", " connected " etc., both it was directly connected to including a certain part and another part, and also passed through miscellaneous part and another portion including a certain part Part is connected.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.

As shown in Figure 1 and Figure 2, a kind of safety type stop valve, including valve body 1, bonnet 2, pressure cap 3, valve rod 6, trim ring 4, flap 7, clutch plate 15 is socketed with the valve rod 6, clutch plate 15 is synchronized with the movement with valve rod 6, and the upper end of clutch plate 15 is provided with lug boss, Lug boss is socketed with manual disk 9, and the manual disk 9 is slidably connected with lug boss, and the manual upper end of disk 9 is connected with pressure by stage clip 12 Disk 10 is connect, the pressure connecting disk 10 is threadedly coupled with the lug boss of clutch plate 15, and stage clip 12 is adjusted by adjusting the pressure connecting disk 10 Compression degree, and then adjust the elastic force of stage clip 12 suffered by manual disk 9, the manual upper surface of disk 9 is provided with ring-type Lower engagement fluted disc 14, the manual lower surface of disk 9 are provided with engagement fluted disc 13, the lower engagement fluted disc 14 and the upper engagement phase of fluted disc 13 It is used cooperatively, engagement connection.

Position of the pressure connecting disk 10 on valve rod is regulated, so as to adjust the pressure size of stage clip 12, rotary manual disk 9 drives Clutch plate is moved, and clutch plate is fixedly connected with valve rod, so as to be rotated with ovable valve stem, realizes the opening and closing of flap.

Specifically, the pressure cap 3 is connected with the threaded upper ends of bonnet 2, and the lower end of bonnet 2 is threadedly coupled with valve body 1, the bonnet 2 positions being connected with valve body 1 are provided with the pad 8 for sealing.The pad is quality of rubber materials, can be added using the pad The effect sealed by force.The pad is the o type circles of quality of rubber materials.

Specifically, trim ring 4 and filler 5 are provided with the region surrounded of the pressure cap 3 and bonnet 2, the filler 5 is stone Ink stick, the graphite block are sandwich construction, and graphite block is arranged into sandwich construction, the structure of more piece mounted on top.Original stone For ink stick to be overall, its stress surface is upper and lower ends face, after being changed to the structure that more piece stacks, the increase of its stress surface, and crushing resistance enhancing, Meanwhile sealing property also strengthens, it is easy to industrially promotion and application.

Specifically, the lower end of valve rod 6 is connected with flap 7, and the flap 7 is spheroid, and spheroid is embedded in the valve rod lower end, And can be rotated freely in valve rod 6, the contact surface on valve body 1 with the lower end of flap 7 is arcwall face, to strengthen sealing effectiveness.

When flap is opened because steel ball can freely rotate inside flap, it can effectively prevent medium flow at high speed from bringing Wash away, valve close when sphere can be realized with valve body arcwall face face seal.

The specific mounting structure of flap, can be as follows：Valve rod lower end is provided with arc groove, spheroid is arranged at groove It is interior, self falling and it can not rotate freely.

Although each conception of species has been described in detail, it will be appreciated by a person skilled in the art that for the various of those concepts It can be achieved under the spirit that modifications and substitutions are integrally instructed disclosed in the utility model.Those skilled in the art are with general Logical technology can just realize the utility model illustrated in detail in the claims in the case of without undue experimentation.Can be with Understand, disclosed specific concept is merely illustrative, is not intended to limit the scope of the utility model, and this practicality is new The scope of type is determined by the four corner of appended claims and its equivalent.

Claims

A kind of 1. safety type stop valve, it is characterised in that including valve body, bonnet, pressure cap, valve rod, trim ring, flap, the valve rod On be socketed with clutch plate, clutch plate is synchronized with the movement with valve rod, and clutch plate upper end is provided with lug boss, and lug boss is socketed with manually Disk, the manual disk are slidably connected with lug boss, and manual disk upper end is connected with pressure connecting disk by stage clip, the pressure connecting disk with it is driven The lug boss threaded connection of disk, the compression degree of stage clip is adjusted by adjusting the pressure connecting disk, and then is adjusted suffered by manual disk Stage clip elastic force, the manual disk upper surface are provided with the lower engagement fluted disc of ring-type, and manual disk lower surface is provided with engagement Fluted disc, the lower engagement fluted disc and upper engagement fluted disc are used in combination, engagement connection.
2. a kind of safety type stop valve according to claim 1, it is characterised in that the pressure cap connects with bonnet threaded upper ends Connect, bonnet lower end is connected with valve body screw thread, and the position that the bonnet is connected with valve body is provided with the pad for sealing.
3. a kind of safety type stop valve according to claim 2, it is characterised in that the pad is the o types of quality of rubber materials Circle.
A kind of 4. safety type stop valve according to claim 1, it is characterised in that the area surrounded of the pressure cap and bonnet Filler is provided with domain, the filler is graphite block, and the graphite block is sandwich construction.
A kind of 5. safety type stop valve according to claim 1, it is characterised in that the valve rod lower end is connected with flap, The flap is spheroid, and spheroid is embedded in the valve rod, and can be rotated freely in valve rod, on valve body with the flap lower end Contact surface is arcwall face, to strengthen sealing effectiveness.