CN206770618U - A kind of liquid-operated corner type anti-friction valve - Google Patents
A kind of liquid-operated corner type anti-friction valve Download PDFInfo
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- CN206770618U CN206770618U CN201720404390.8U CN201720404390U CN206770618U CN 206770618 U CN206770618 U CN 206770618U CN 201720404390 U CN201720404390 U CN 201720404390U CN 206770618 U CN206770618 U CN 206770618U
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- valve
- sealing
- valve seat
- liquid
- flap
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Abstract
A kind of liquid-operated corner type anti-friction valve, using the structure type of runner low in and high out, medium is entered by lower section, is flowed out from right.This structure design can be effectively prevented from the depositional phenomenon occurred when coal water slurry medium is static or circulation is not smooth, and then avoid the adverse consequences for making valve seal fail because medium coking occurs, tungsten carbide thermal spraying treatment is used to runner, the advantages of thermal spraying is that coating consistency is big, the ability combined with matrix is strong, coating deposition efficiency is high, and the sealing of valve element and valve seat uses double sealing structure.That is first of face of cylinder is sealed into time sealing, and second conical surface seal is primary seal.During closing, the valve element face of cylinder is introduced into valve seat endoporus, realizes time sealing, and then valve element continues to decline, and the valve element conical surface and valve seat taper-face contact, completes primary seal, by the design of primary and secondary double sealing structure, makes valve be easier to close, and sealing property is more reliable.
Description
Technical field
The utility model is specifically related to mechanical equipment technical field, and in particular to a kind of liquid-operated corner type anti-friction valve.
Background technology
Currently available technology be used for medium be high-temperature particle thing anti-friction valve in use, coal water slurry medium is easy
It is deposited in runner, so as to cause depositional phenomenon, so as to occur making valve seal failure not because medium coking occurs
Good consequence, and the anti-wear performance of existing anti-friction valve is bad, and Wear-resistant Treatment and difficulty of processing are high, it is not easy to operate.
Utility model content
It is of the present utility model to provide a kind of liquid-operated corner type anti-friction valve in order to solve the deficiencies in the prior art.
The utility model use technical solution be：A kind of liquid-operated corner type anti-friction valve, including valve body and valve rod, it is described
Valve body be provided with bonnet, the front end of described valve rod is provided with flap, is provided with valve seat in described valve body, is set in described valve body
There is medium runner, the inlet of described medium runner is located at the bottom of valve body.
The liquid outlet of described medium runner is located at the right side of valve body.
Described flap includes the secondary sealing and the primary seal portion on time sealing, described secondary sealing of bottom
It is integrally formed with primary seal portion, the sealing surface of described secondary sealing is column sealed face, described secondary sealing and valve base chamber
The face of cylinder seals, and the junction of described primary seal portion and time sealing is provided with the conical surface, and described primary seal portion bores with valve base chamber
Face seals, and described flap includes open position, flap last time sealing and the sealing of the valve base chamber face of cylinder separated with valve seat
Primary seal portion and the major seal of valve base chamber conical surface seal on secondary sealing station and flap.
Described flap is made with valve seat of overall stellite.
Described flap is with valve rod head using being threadedly coupled, and the screw connection point on described flap and valve rod head is also
It is coated with high temperature resistant glue.
The inlet of described medium runner is provided with inlet cannula, and the liquid outlet of described medium runner is provided with outlet
The inner chamber sprayed wc processing of sleeve pipe, described inlet cannula and outlet sleeve.
It is interference fitted between described valve seat and inlet cannula.
A kind of wear resistant processing method of liquid-operated corner type anti-friction valve, it is characterised in that comprise the following steps：
（1）The processing of spray gun thermal spraying tungsten carbide is carried out to the lumen runner of valve；
（2）The inner chamber of inlet cannula and outlet sleeve carries out sprayed wc processing：When outlet sleeve sprays, first to outlet
The left-half runner of sleeve pipe is sprayed, and is then put into outlet sleeve in valve body, and welded in right side binding site
Connect, the right side of outlet sleeve is finished again after the completion of welding, to ensure the sealing property of end face, finally again to outlet
The right half part runner of sleeve pipe is sprayed, and when inlet cannula sprays, point top half and the latter half spray twice, first to entering
The top half runner of muzzle pipe is sprayed, and is then put into inlet cannula in valve body, finally again to the lower half of inlet cannula
Portion of runner is sprayed；
（3）The Wear-resistant Treatment and installation of valve element and valve rod：Valve element is made with valve seat of overall stellite, first valve
Bar is integrally nitrogenized, then the nitration case at valve rod spraying position is removed with grinding machine, then is sprayed, finally carry out again finishing so as to
Obtain higher case hardness, valve element and valve rod head are using being threadedly coupled, in screw thread position smearing high temperature resistant glue during assembling
Valve element is set to be permanently fixed with valve rod；
（4）The installation of valve seat and inlet cannula：Using heating assembling method assembling valve seat and inlet cannula, inlet cannula is put
Enter in firing equipment and heat, then valve seat is pressed into inlet cannula with forcing press, make valve seat and inlet cannula whole as one
Body.
The beneficial effects of the utility model are：The utility model provides a kind of liquid-operated corner type anti-friction valve, low using runner
Enter the structure type being higher by, medium is entered by lower section, is flowed out from right.This structure design can be effectively prevented from coal water slurry Jie
The depositional phenomenon occurred when matter is static or circulates not smooth, and then avoid making the bad of valve seal failure because medium coking occurs
Consequence, uses tungsten carbide thermal spraying treatment to runner, is that coating consistency is big the advantages of thermal spraying, the ability combined with matrix
By force, coating deposition efficiency is high, and the sealing of valve element and valve seat uses double sealing structure.That is first of face of cylinder is sealed into secondary close
Envelope, second conical surface seal is primary seal.During closing, the valve element face of cylinder is introduced into valve seat endoporus, realizes time sealing, then valve element
Continue to decline, the valve element conical surface and valve seat taper-face contact, complete primary seal, by the design of primary and secondary double sealing structure, make valve
Easily close, and sealing property is more reliable.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model flap closed mode structural representation.
Fig. 3 is the utility model valve flap structure schematic diagram.
1- valve bodies in figure, 2- valve rods, 3- bonnets, 4- flaps, 5- valve seats, 6- inlets, 7- liquid outlets, 41- sealing,
42- primary seals portion, the 43- conical surfaces, 61- inlet cannulas, 71- outlet sleeves.
Embodiment
The utility model is further described in conjunction with Fig. 1, Fig. 2, Fig. 3, a kind of liquid-operated corner type anti-friction valve, including valve
Body 1 and valve rod 2, described valve body 1 are provided with bonnet 3, and the front end of described valve rod 2 is provided with flap 4, set in described valve body 1
There is valve seat 5, be provided with medium runner in described valve body 1, the inlet 6 of described medium runner is located at the bottom of valve body 1.It is described
The liquid outlet 7 of medium runner be located at the right side of valve body 1, using the structure type of low in and high out, medium is entered by lower section, from the right side
Side's outflow.This structure design can be effectively prevented from the depositional phenomenon occurred when coal water slurry medium is static or circulation is not smooth, enter
And avoid the adverse consequences for making valve seal fail because medium coking occurs.
Described flap 4 includes the secondary sealing 41 of bottom and the primary seal portion 42 on time sealing 41, described
Secondary sealing 41 is integrally formed with primary seal portion 42, and the sealing surface of described secondary sealing 41 is column sealed face, described time
The face of cylinder seals between sealing 41 and valve seat 5, and described primary seal portion 42 and the junction of time sealing 41 are provided with the conical surface 43, institute
Conical surface seal between the primary seal portion 42 stated and valve seat 5, open position that described flap 4 includes separating with valve seat 5, on flap 4
The conical surface 43 between primary seal portion 42 and valve seat 5 on the secondary sealing station and flap 4 that the face of cylinder seals between secondary sealing 41 and valve seat 5
Seal the major seal of envelope.Using double sealing structure.That is first of face of cylinder is sealed into time sealing, second conical surface seal
For primary seal.During closing, the flap face of cylinder is introduced into valve seat endoporus, realizes time sealing, then flap continues to decline, the flap conical surface
With valve seat taper-face contact, primary seal is completed, by the design of primary and secondary double sealing structure, makes valve be easier to close, and seal
More reliable performance.
Described flap 4 and valve seat 5 are made of overall stellite, are hardness height the advantages of stellite,
Wearability is good, and the thermal coefficient of expansion of stellite is low, be less prone under worst hot case spool jam, operating difficulties,
Phenomena such as sealing face leakage.
Described flap 4 is used with the head of valve rod 2 and is threadedly coupled, described flap 4 and the threaded joints on the head of valve rod 2
Position is also coated with high temperature resistant glue, valve element is permanently fixed with valve rod.Interference is matched somebody with somebody between described valve seat 5 and inlet cannula 61
Close, the magnitude of interference is about 0.3mm, using heating assembling method assembling.Inlet cannula is put into certain temperature is heated in firing equipment,
Then valve seat is pressed into inlet cannula with forcing press, then valve seat turns into an entirety with inlet cannula, and binding site does not have
There is gap, disclosure satisfy that the requirement under worst hot case.
The inlet 6 of described medium runner is provided with inlet cannula 61, and the liquid outlet 7 of described medium runner is provided with
The inner chamber sprayed wc processing of outlet sleeve 71, described inlet cannula 61 and outlet sleeve 71.In order to improve valve flowing channel
Wearability, it is necessary to use tungsten carbide thermal spraying treatment to runner, be that coating consistency is big the advantages of thermal spraying, combined with matrix
Ability it is strong, coating deposition efficiency is high.But because the nominal dimension of valve is DN50, lumen runner can be direct with spray gun
Spraying, and the size of entrance and outlet flow is too small, in general spray gun can not put in runner and be sprayed completely.Then in valve
The entrance and outlet flow of body use 304 stainless steel sleeve tubular constructions, and the inner chamber of inlet cannula and outlet sleeve is sprayed
Tungsten carbide processing, improves the wearability of valve flowing channel by this method.
A kind of wear resistant processing method of liquid-operated corner type anti-friction valve, comprises the following steps：
（1）The processing of spray gun thermal spraying tungsten carbide is carried out to the lumen runner of valve；
（2）The inner chamber of inlet cannula and outlet sleeve carries out sprayed wc processing：When outlet sleeve sprays, first to outlet
The left-half runner of sleeve pipe is sprayed, and is then put into outlet sleeve in valve body, and welded in right side binding site
Connect, the right side of outlet sleeve is finished again after the completion of welding, to ensure the sealing property of end face, finally again to outlet
The right half part runner of sleeve pipe is sprayed, pay attention to can not before outlet sleeve puts into valve body disposably by left-half runner and
Right half part runner all sprays, because tungsten carbide hardness is very high, so right side will be made not finish, inlet cannula spray
Tu Shi, point top half and the latter half are sprayed twice, and first the top half runner of inlet cannula is sprayed, then will be entered
Muzzle pipe is put into valve body, and finally the latter half runner of inlet cannula is sprayed again, pays attention to spraying exit and entrance set
Valve seat is protected with special tooling during pipe, in order to avoid be damaged during spraying；
（3）The Wear-resistant Treatment and installation of valve element and valve rod：Valve element is made with valve seat of overall stellite, first valve
Bar is integrally nitrogenized, and the nitration case at valve rod spraying position is being removed with grinding machine（Because hardness is higher after nitridation, it is impossible to directly spray
Apply, first remove nitration case with grinding machine, then sprayed, so as to obtain higher case hardness）, then sprayed, finally enter again
So as to obtain higher case hardness, valve element and valve rod head apply using being threadedly coupled, during assembling in screw thread position for row finishing
Smearing high temperature resistant glue makes valve element be permanently fixed with valve rod；
（4）The installation of valve seat and inlet cannula：Using heating assembling method assembling valve seat and inlet cannula, inlet cannula is put
Enter in firing equipment and heat, then valve seat is pressed into inlet cannula with forcing press, make valve seat and inlet cannula whole as one
Body.
The type of drive of valve is hydraulic-driven, easy when driving force is larger because the fragility of hard alloy material is big
Damage sealing surface.So valve uses spring buffer structure in design, in addition, the design of hydraulic cylinder also uses buffer structure,
When valve element nearly closed position, valve rod（Or piston rod）It can be acted on by cushion effect, driving force during so as to reduce closing.
By the design of double buffering function, make valve more steady in operation, there is longer service life.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of liquid-operated corner type anti-friction valve, including valve body（1）And valve rod（2）, described valve body（1）It is provided with bonnet（3）, it is described
Valve rod（2）Front end be provided with flap（4）, described valve body（1）It is interior to be provided with valve seat（5）, it is characterised in that described valve body
（1）It is interior to be provided with medium runner, the inlet of described medium runner（6）Positioned at valve body（1）Bottom, described flap（4）Bag
Include the secondary sealing of bottom（41）With positioned at secondary sealing（41）On primary seal portion（42）, described secondary sealing（41）With master
Sealing（42）It is integrally formed, described secondary sealing（41）Sealing surface be column sealed face, described secondary sealing（41）
With valve seat（5）Between the face of cylinder seal, described primary seal portion（42）With secondary sealing（41）Junction be provided with the conical surface（43）, institute
The primary seal portion stated（42）With valve seat（5）Between conical surface seal, described flap（4）Including with valve seat（5）The open position of separation,
Flap（4）Last time sealing（41）With valve seat（5）Between the face of cylinder seal secondary sealing station and flap（4）Upper primary seal portion
（42）With valve seat（5）Between the conical surface（43）The major seal of sealing.
A kind of 2. liquid-operated corner type anti-friction valve according to claim 1, it is characterised in that the liquid outlet of described medium runner
（7）Positioned at valve body（1）Right side.
A kind of 3. liquid-operated corner type anti-friction valve according to claim 1, it is characterised in that described flap（4）With valve seat（5）
It is made of overall stellite.
A kind of 4. liquid-operated corner type anti-friction valve according to claim 1, it is characterised in that described flap（4）With valve rod（2）
Head is using threaded connection, described flap（4）With valve rod（2）The screw connection point on head is also coated with high temperature resistant glue.
A kind of 5. liquid-operated corner type anti-friction valve according to claim 2, it is characterised in that the inlet of described medium runner
（6）It is provided with inlet cannula（61）, the liquid outlet of described medium runner（7）It is provided with outlet sleeve（71）, described entrance
Sleeve pipe（61）And outlet sleeve（71）The processing of inner chamber sprayed wc.
A kind of 6. liquid-operated corner type anti-friction valve according to claim 5, it is characterised in that described valve seat（5）With entering muzzle
Pipe（61）Between be interference fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404390.8U CN206770618U (en) | 2017-04-18 | 2017-04-18 | A kind of liquid-operated corner type anti-friction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404390.8U CN206770618U (en) | 2017-04-18 | 2017-04-18 | A kind of liquid-operated corner type anti-friction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206770618U true CN206770618U (en) | 2017-12-19 |
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ID=60630771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720404390.8U Expired - Fee Related CN206770618U (en) | 2017-04-18 | 2017-04-18 | A kind of liquid-operated corner type anti-friction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206770618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013685A (en) * | 2017-04-18 | 2017-08-04 | 浙江石化阀门有限公司 | A kind of liquid-operated corner type anti-friction valve and its wear resistant processing method |
-
2017
- 2017-04-18 CN CN201720404390.8U patent/CN206770618U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013685A (en) * | 2017-04-18 | 2017-08-04 | 浙江石化阀门有限公司 | A kind of liquid-operated corner type anti-friction valve and its wear resistant processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20200418 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |