CN206112176U - Scour protection loses by, throttle, non return high pressure valve - Google Patents

Abstract

The utility model relates to a high pressure valve that trades such as chemical industry, oil, electric power, metallurgy, light textile, medicine were used, applicable operating pressure be 6.4~32Mpa of PN, specially indicate one kind new for, throttle, the high -pressure valve of non return. There is the sealed face of valve clack in valve on market and suffers easily that the erosion destroys, the short scheduling problem of life at present. The utility model discloses a purpose develop one kind new for, throttle, non return high pressure valve. The structure is in the valve, and valve clack (2) lower extreme distributes has the reposition of redundant personnel throttle body (3), and the reposition of redundant personnel throttle body (3) lower extreme upwards has a blind hole, and it has branch discharge orifice (4) to distribute on the outside peripheral wall of blind hole, passes through locating pin (11) and constant head tank (12) sliding connection from top to bottom with valve rod (6) lower extreme in the blind hole of valve clack (2) upper end simultaneously. Realize improving valve seal performance and life, reduce the consumptive material, reduce the on -the -spot artifical maintenance frequency and the amount of labour, improve the technological level of enterprise and production efficiency's purpose.

Description

Fluid erosion prevention cut-off, throttling, non-return high pressure valve

Technical field

This utility model patent is related to the high pressure valve that the industries such as chemical industry, oil, electric power, metallurgy, light textile, medicine are used, Applicable operating pressure is 6.4～32Mpa of PN, refers exclusively to a kind of new cut-off, throttling, non-return high pressure valve.

Background technology

Valve commercially or used in the pipeline of every profession and trade, such as stop valve, choke valve, check-valves, its structure Mostly it is to be fixed to be connected as a single entity by connector by valve body and support, flap and the valve seal seat of valve rod lower end（Valve pocket）Close Circulation cooperation is opened in sealing, and this traditional structure there are problems that following：

1st, in use, as shown in figure 8, no matter being on or off, valve clack sealing surface is in all the time stop valve In the erosion state of medium.Time one, long particularly in the presence of flow media, the erosion attack that valve clack sealing surface suffers was more Plus it is serious, cause valve closing not tight, premature failure, the serious normal work that can also affect pipeline causes associated Equipment stops and stops production, so as to cause many unnecessary economic losses.

2nd, in about the Technical specifications of choke valve, as shown in figure 9, be substantially above on the basis of stop valve, By the lower end of flap 2（Or referred to as front end）One section of strangling head 5 is lengthened, external diameter is cone, and termination is in spherical, thin before entirety It is thick afterwards, so, when medium enters fashionable from valve inlet, flowed out by the gap between taper strangling head 5 and inlet channel, pass through Valve rod 6 moves up and down the working condition to adjust flap 2 and taper strangling head 5 so as to control rate-of flow.Due in sealing The change of runner at mouthful causes the change of flow velocity, in medium suddenly change flow or flow velocity, the periphery of taper strangling head 5 and phase Medium between adjacent valve seat can produce 〝 flash distillation 〞, and moment bubble occurs and explodes, thus destroys the sealing of flap and valve seat Face, continuously emerges pit, and the service life for making choke valve is greatly shortened.Such as chemical fertilizer production pipeline put ammonia valve L44, BL45, The series high and middle pressure valve such as L41, L61, is exactly this throttle, so the most short service life for typically putting ammonia valve only has one week Many, the most long life is also less than three weeks, needs frequently to stop and changes valve.

3rd, in current technical standard the valve clack sealing surface pattern of check-valves as stop valve, the rising of flap is by medium Unlifting pressure, the decline of flap is the return pressure by medium, and its guiding leaning flap is cylindrical or fairlead, and valve clack sealing surface is not But by the erosion of medium, while medium can also rush the askew direction to outlet flap, it is difficult to return seat sealing, cause improper mistake Effect.

The content of the invention

The purpose of this utility model patent is to be directed to problem present in the conventional design mentioned in technical background, design A kind of new cut-off, throttling, non-return high pressure valve are developed, either stop valve, choke valve or check-valves are all difficult to grow for solution The problem of time normal work, improves valve seal performance and service life, reduces consumptive material, reduce live manual maintenance's number of times and The amount of labour, improves the technological level and production efficiency of enterprise.

The technical solution adopted to realize above-mentioned technical purpose：Coordinate referring to accompanying drawing and shown by reference numeral, label is put In bracket.

Cut-off, throttling, non-return high pressure valve, by valve body（1）And support（7）Be connected as a single entity composition valve, can be upper and lower in valve Valve rod（6）Lower end connects flap（2）, up and down flap（2）With valve body（1）Interior valve seat contact is sealed and separated, valve seat Positioned at valve body（1）At interior medium inlet and media outlet, it is characterized in that：In valve, flap（2）Lower end is distributed with shunting section Fluid（3）, shunting throttling body（3）There is upwards blind hole lower end, and tap hole is distributed with the outside peripheral wall of blind hole（4）, while valve Lobe（2）In the blind hole of upper end and valve rod（6）Lower end passes through alignment pin（11）And locating slot（12）Connection is slided up and down, flap is made（2） Realization is slided up and down, upper and lower double positioning, and it is accurate to reset, and prevents flap from rushing crooked by medium.

The technical scheme of this utility model patent also includes：

Described cut-off, throttling, non-return high pressure valve, is characterized in that：Flap（2）There is shunting throttling body lower end（3）, Liang Zhexiang It is linked into one formula structure.

Described cut-off, throttling, non-return high pressure valve, is characterized in that：Flap（2）There is shunting throttling body lower end（3）, Liang Zhexiang Contact becomes split-type structural.

Described cut-off, throttling, non-return high pressure valve, is characterized in that：Flap（2）Upper end has and valve rod（6）The hole of cooperation, hole The alignment pin of middle fixation（11）Insertion valve rod（6）Corresponding upper and lower locating slot（12）In, valve rod（6）Lower end sphere is located at flap （2）Bottom surface in blind hole above, alignment pin（11）Termination be located at locating slot（12）It is interior.

The effect and advantage of this utility model patent：

1st, due to employing the structure of shunting throttling body before flap, therefore shunting, throttling have been carried out to medium, has been reduced Medium directly to flap and the erosion attack of sealing surface of seat, substantially prolongs the service life of valve.In the blind hole of flap upper end Slided up and down by alignment pin and locating slot with valve rod lower end and be connected, make flap realize slide up and down, upper and lower bi-locating function, It is accurate to reset, and prevents flap from rushing crooked by medium.

2nd, due to employing the structure for shunting throttling body before flap, the service life of valve is improve, so as to reduce The amount of labour of manual maintenance.

3rd, it is rational in infrastructure, it is easily installed, the various performances of original cut-off, throttling, check-valves are maintained, valve is run more Plus it is safe and reliable, improve the production efficiency of equipment.

4th, through test of many times, it was demonstrated that rationally, smooth performance reliability, service life can improve 10 to 20 times to compact conformation, It is durable in use.

5th, this innovative technology can according to the actual requirements select individual event to implement or three unifications are implemented（That is multi-purpose valve）.

Description of the drawings

Fig. 1 is typical angie type high-pressure stop, throttling, the structural representation of check-valves；Fig. 2 be general expression high-pressure stop, Throttling, the structural representation of check-valves；Fig. 3 is middle pressure cut-off, throttling, the structural representation of check-valves；Fig. 4 is Y type mesolows Cut-off, throttling, the structural representation of check-valves；Fig. 5 is that the structure when valve that E portions amplify in above-mentioned figure is closed is shown It is intended to, is also the structural representation of stop valve；Fig. 6 is that the structure when valve that E portions amplify in above-mentioned figure is in open mode is shown It is intended to, is also the structural representation of choke valve；Fig. 7 is reflux pressure of the flap 2 in the valve that E portions amplify in above-mentioned figure by medium Structural representation when power is automatically switched off, is also the schematic diagram of check-valves；Fig. 8 is the structure of the stop valve mentioned in technical background Schematic diagram；Fig. 9 is cut-off, the structural representation of choke valve mentioned in technical background.

The component names representated by label in above-mentioned figure are as follows：1--- valve bodies, 2--- flaps, 3--- shunting throttling bodies, 4--- tap holes, 5--- strangling heads, 6--- valve rods, 7--- supports, 8--- valve stem nuts, 9--- handles, 10--- bolt connections Part, 11--- alignment pins, 12--- locating slots.

Specific embodiment

This utility model patent is described further below with reference to accompanying drawing：

Accompanying drawing 1 is this utility model angie type high-pressure stop, throttling, the structural representation of check-valves.Valve body 1 and support 7 by Bolt connection piece 10 is connected as one so as to constitute valve, in valve, the top of support 7 fix valve stem nut 8, valve rod 6 with Valve stem nut 8 coordinates can be moved up and down, the upper end fixed handle 9 of valve rod 6, when rotary handle 9 is rotated in a clockwise direction, valve Bar 6 is moved down, and makes flap 2 come into contact with valve seat, and valve is progressively closed；When rotary handle 9 rotates in the counterclockwise direction, flap 2 Rise with valve rod 6, gradually lift off a seat, valve is progressively opened, medium flows out；When medium stops, flap can decline rapidly again, So as to play a part of to seal non-return.Shown in general expression high-pressure stop, throttle non-return valve, Fig. 3 shown in Fig. 2 middle pressure cut-off, The cut-off of Y types mesolow, the structure of choke valve and operation principle and Fig. 1 basic simlarities shown in choke valve and Fig. 4, here is just no longer Repeat.

Accompanying drawing 5 is the enlarged drawing in E portions in above-mentioned several stop valves, there is what is can moved up and down in the lower channel in valve body Valve rod 6, flap 2 and the valve seat of the connection of the lower end of valve rod 6 can seal and open cooperation, and shunting throttling body 3 is fixed in the lower end of flap 2, It is from bottom to top blind hole, blind hole has from inside to outside tap hole 4, so when valve rod 6 is lifted, shunting throttling body 3 therewith upwards, is situated between Matter is flowed outwardly from shunting throttling body 3 by blind hole and the shunting throttle orifice 4 around it, then flow direction outlet, so as to change The flow direction of original medium, it is to avoid medium, particularly flow media directly to flap 2 and the erosion attack of sealing surface of seat, this The characteristics of being exactly this utility model.Simultaneously the lower end sphere of valve rod 6 is located in flap 2, the alignment pin 11 that above both sides are fixed of flap 2 In corresponding two locating slot 12 of insertion valve rod 6, the length of locating slot 12 is highly come really according to the relative movement of flap open position It is fixed.

Flap 2 is capable of achieving to slide up and down with valve rod 6 by alignment pin 11 and locating slot 12, realizes flap 2 double fixed up and down Position, it is accurate to reset, and prevents flap from rushing crooked by medium.Also, it should be noted that shunting throttling body 3 is fixed in the lower end of flap 2 two Kind of form or structure, are respectively integral types and split type.Integral type is main integral by processing using directly fixed, or Person its attachment structure such as pass through screw thread, bonding, inlay and be fixed as one；It is split type be its pass through surface contact with each other or size in The footpath form touch such as be nested, inlay is connected as one, and can be in a word fixed and detached two individual parts.

Fig. 6 is the enlarged drawing in choke valve E portions in above-mentioned figure, and basic structure is similar with Fig. 5, simply in choke valve, together Should valve rod 6 when being rotated clockwise with handle 9, therewith upwards, valve opening is throttled for flap 2 and shunting throttling body 3, From tap hole 4 or referred to as, throttle orifice 4 flows out medium, and as valve is progressively opened, rate-of flow also gradually increases, otherwise also So, when valve is progressively closed, rate-of flow is gradually reduced, until thoroughly closing.

Fig. 7 is the enlarged drawing in check-valves E portions in above-mentioned figure, and basic structure is similar to stop valve, except for the difference that when valve is opened Qi Hou, such as need to stop rapid-closure damper when, the return pressure of medium promotes flap 2, progressively closes off flap 2, and its flap 2 is just It is to realize being automatically switched off by the pressure for flowing backwards medium, without the need for rotary valve rod 6 again flap is closed.

Fig. 8 and Fig. 9 has done related introduction as original technology in technical background, and here is just repeated no more.

Claims (4)

1. cut-off, throttling, non-return high pressure valve, by valve body（1）And support（7）Be connected as a single entity composition valve, up and down in valve Valve rod（6）Lower end connects flap（2）, up and down flap（2）With valve body（1）Interior valve seat contact is sealed and separated, valve seat position In valve body（1）At interior medium inlet and media outlet, it is characterized in that：In valve, flap（2）Lower end is distributed with shunting throttling Body（3）, shunting throttling body（3）There is upwards blind hole lower end, and tap hole is distributed with the outside peripheral wall of blind hole（4）, while flap （2）In the blind hole of upper end and valve rod（6）Lower end passes through alignment pin（11）And locating slot（12）Slide up and down connection.

2. cut-off according to claim 1, throttling, non-return high pressure valve, is characterized in that：Flap（2）There is shunting throttling lower end Body（3）, both are connected and are integrally formed formula structure.

3. cut-off according to claim 1, throttling, non-return high pressure valve, is characterized in that：Flap（2）There is shunting throttling lower end Body（3）, both contact becomes split-type structural.

4. cut-off according to claim 1, throttling, non-return high pressure valve, is characterized in that：Flap（2）Upper end both sides have and valve Bar（6）Alignment pin fixed in two side holes above the hole of cooperation, flap 2（11）Insertion valve rod（6）Corresponding upper and lower locating slot （12）In, valve rod（6）Lower end sphere is located at flap（2）Bottom surface in blind hole above, is capable of achieving to slide up and down, double positioning up and down Alignment pin（11）Termination is located at locating slot（12）It is interior.