CN207514311U - A kind of check-valves for being easily changed valve seat - Google Patents
A kind of check-valves for being easily changed valve seat Download PDFInfo
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- CN207514311U CN207514311U CN201721585604.2U CN201721585604U CN207514311U CN 207514311 U CN207514311 U CN 207514311U CN 201721585604 U CN201721585604 U CN 201721585604U CN 207514311 U CN207514311 U CN 207514311U
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- valve seat
- valve body
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- check
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Abstract
The utility model provides a kind of check-valves for being easily changed valve seat, and including valve seat, valve body, valve body has inlet segment, and inlet segment is equipped with the valve body seat slot being connected with valve seat, it is characterised in that：Valve body seat slot includes valve body limiting slot and straight slot, which is connected with valve body limiting slot, and wherein the diameter of valve body limiting slot is more than the diameter of straight slot；Mating surface of the side wall of straight slot for valve body and valve seat；A cricoid groove is offered on the side contacted on valve seat and with mating surface, sealing ring is equipped in groove；Screw hole is radially offered on valve seat, cylinder end clamping fixed screw is placed in screw hole, and the top contact of cylinder end clamping fixed screw opens up screw baffle ring annular groove on the side wall of valve body limiting slot, along screw hole side wall, and baffle ring is equipped in baffle ring annular groove.The check-valves can overcome prior art defect, easy to disassemble.
Description
Technical field
The utility model is related to a kind of swing type ball check valve more particularly to a kind of anti-dropout detachable valve seats.
Background technology
Swing type ball check valve be it is a kind of be applied to heavy caliber long range crude oil or product transportation pipeline, as can be with
Allow wiper by the check-valves that unidirectionally blocks of circuit, effect be on the basis of realization prevents medium from flowing backwards function,
Wiper can be passed through when medium conveys.
Swing type ball check valve is typically designed as roof-mounted structure, and the valve deck of body top is arranged on by opening, can
Online to remove the parts such as flap, the valve seat in valve body so that flap valve seat etc. is safeguarded or replaced, this is other classes
The technical advantage that type check-valves does not have.Generally, flap is suspended on valve rod, it is easy to disassemble, and conventional swing type leads to
Ball check valve valve seat is mounted in valve body and is unanimously arranged with the flow direction of pipeline, in order to prevent valve seat by by wiper pull it is de-
It falls, while keeps the removable unloading functions of valve seat again, valve seat is generally connected with valve body threadably.It needs to dismantle valve seat
When, it is only necessary to valve seat back-out can be realized to the replacement to valve seat.
In fact, this also fairly obvious using the valve seat construction shortcoming being threadedly coupled, in practical applications detachable
Property is also had a greatly reduced quality：
1st, due to using being threadedly coupled, working as valve valve body or valve seat caused by the reasons such as corrosion between valve seat and valve body
After certain one side is corroded, the dismounting of valve seat just becomes extremely difficult；
2nd, valve seat, due to the presence in gap between screw thread, needs to obtain seat design longer with drop using valve body is threaded into
Low valve seat and the appearance of valve body decentraction situation, increase processing and manufacturing difficulty, directly increase material cost；
3rd, since valve body screw thread is corroded, the valve seat of replacement is difficult to reload valve body；Due to the presence of thread pitch, more
The valve seat changed is even completed to cannot guarantee that sealing surface of seat and valve clack sealing surface compactness, therefore will influence valve seat after replacing
Sealing.
Invention content
The utility model provides a kind of check-valves for being easily changed valve seat, it is therefore an objective to solve prior art problem, provide one
The check-valves of kind installation easy to disassemble.
The utility model solve the problems, such as the technical solution adopted is that：
A kind of check-valves for being easily changed valve seat, including valve seat, valve body, valve body has inlet segment, the inner end of inlet segment
Equipped with the valve body seat slot being connected with valve seat, valve body seat slot includes limiting along the cricoid valve body that inlet segment inner wall opens up for one week
Slot and from the inside top of inlet segment to the cricoid straight slot opened up between valve body limiting slot along inlet segment inner wall, the straight slot with
Valve body limiting slot is connected, and wherein the diameter of valve body limiting slot is more than the diameter of straight slot；The side wall of straight slot is contacted with valve seat, is valve
The mating surface of body and valve seat.
A cricoid groove is offered on the side contacted on valve seat and with mating surface, sealing ring is equipped in groove.It adopts
With valve body and the mode of the direct clearance fit of valve base chamber, it is therefore an objective to ensure that valve seat is detachable.
On valve seat and along one week screw hole for radially offering no less than one of valve seat, cylinder end clamping fixed screw is placed in spiral shell
In nail hole, the top contact of cylinder end clamping fixed screw is on the side wall of valve body limiting slot.
Further, screw hole is uniformly distributed along valve seat annular.
It is connected between valve seat and valve body using cylinder end clamping fixed screw, and annular is uniformly distributed in the side of valve body and valve base chamber
Formula achievees the purpose that be axially moved with cylinder end clamping fixed screw limitation valve seat, and realization prevents the function that valve seat comes off.
Screw baffle ring annular groove is opened up within one week along screw hole side wall, baffle ring is equipped in screw baffle ring annular groove, which is used to limit
To valve seat radial displacement occurs for cylinder end clamping fixed screw processed, prevents cylinder end clamping fixed screw from coming off due to vibration, ensure that cylinder
Hold reliability of the holding screw to the limitation of valve seat axial displacement.
Further, mating surface and the valve seat side contacted are equipped with wear-and corrosion-resistant layer.
Further, built-up welding austenitic stainless steel in the mating surface.
Further, the valve seat side is equipped with HCr layers.
Valve body and the valve body cooperation surface build-up welding austenitic stainless steel of valve seat cooperation, valve seat outer diameter face plate hard HCr, improve two and match
Conjunction face abrasive resistance increases the difference of hardness of two mating surfaces, prevents two mating surfaces from can not dismantle when killing.
Further, offer sealing ring dovetail groove on valve seat and the corresponding side of flap, sealing ring dovetail groove with
There is gap, valve seat insert is placed in sealing ring dovetail groove, and is pushed down by valve seat insert dovetail pressure ring, is passed through between flap
Valve seat insert dovetail pressure ring is fixed on valve seat by soket head cap screw and spring washer.
Further, valve seat metallic sealing section, valve seat metal sealing are equipped on the side being in contact in valve seat with flap
Face is in contact with flap.
Further, valve seat metallic sealing section surface overlaying hard alloy.Valve seat metallic sealing section pile-up welding hard alloy,
And by milled processed, surface smoothness is improved simultaneously while surface abrasion resistance ability is improved, it is ensured that bubble grade seals.
Valve seat realizes that valve seat setting metallic sealing section and rubber seal, metallic sealing section are held using compound seal mode
Seal pressure is formed by the active force of medium on flap is acted on, ensures high pressure seal result, rubber sealing ensures low pressure
Sealing effect, while the microcosmic leakage under high pressure conditions is prevented, it prevents metal sealing from forming jet stream and destroys.
The beneficial effects of the utility model：
1st, by the way of valve body and the direct clearance fit of valve base chamber, ensure that valve seat is detachable；Valve body coordinates with valve seat
Valve body cooperation surface build-up welding austenitic stainless steel, valve seat outer diameter face plates hard HCr, improves two mating surface abrasive resistances, increase by two and match
The difference of hardness in conjunction face prevents two mating surfaces from can not dismantle when killing.
2nd, it is connected between valve seat and valve body using cylinder end clamping fixed screw, and annular is uniformly distributed in valve body and valve base chamber
Mode achievees the purpose that be axially moved with cylinder end clamping fixed screw limitation valve seat, and realization prevents the function that valve seat comes off；Cylindrical end
Holding screw tail portion uses stainless steel retainer ring spacing, prevents cylinder end clamping fixed screw from coming off due to vibration, ensure that cylindrical end is tight
Determine the reliability of limitation of the screw to valve seat axial displacement.
3rd, valve seat is realized using compound seal mode, and valve seat setting metallic sealing section and rubber seal, metal sealing are held
Seal pressure is formed by the active force of medium on flap is acted on, ensures high pressure seal result, rubber sealing ensures low pressure
Sealing effect, while the microcosmic leakage under high pressure conditions is prevented, it prevents metal sealing from forming jet stream and destroys.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is A portions enlarged drawing in Fig. 1；
Fig. 3 is body portion structure diagram in Fig. 2.
In figure：1. valve seat, 2. valve bodies, 21. inlet segments, 3. valve body seat slots, 31. valve body limiting slots, 311. side walls, 32. lead to
Slot, 321. mating surfaces, 322. stainless steels, 4. grooves, 41. sealing rings, 5. screw holes, 6. cylinder end clamping fixed screws, 61. tops,
7. screw baffle ring annular groove, 71. baffle rings, 8. sealing ring dovetail grooves, 81. valve seat inserts, 82. valve seat insert dovetail pressure rings, 9.
Flap, 10. valve seat metallic sealing sections.
Specific embodiment
The utility model is described in further details below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, Figure 2, shown in Fig. 3, a kind of check-valves for being easily changed valve seat, including valve seat 1, valve body 2, valve body 2 has
There is inlet segment 21, the inner end of inlet segment is equipped with the valve body seat slot 3 being connected with valve seat, and valve body seat slot 3 is included along inlet segment
Cricoid valve body limiting slot 31 that inner wall opens up for one week and from the inside top of inlet segment between valve body limiting slot along inlet segment
The cricoid straight slot 32 that inner wall opens up, the straight slot 32 are connected with valve body limiting slot 31, and the diameter of wherein valve body limiting slot 31 is big
In the diameter of straight slot 32；The side wall of straight slot is contacted with valve seat 1, is the mating surface 321 of valve body and valve seat.
A cricoid groove 4 is offered on the side contacted on valve seat and with mating surface 321, sealing is equipped in groove 4
Circle 41.By the way of valve body and the direct clearance fit of valve base chamber, it is therefore an objective to ensure that valve seat is detachable.In order to enhance mating surface
With the corrosion resistance and wearability of the contact surface of valve seat, increase the difference of hardness of two mating surfaces, prevent two mating surfaces can not when killing
Dismounting.Wear-and corrosion-resistant layer is equipped in mating surface 321 and the valve seat side contacted, heap in mating surface 321 in the present embodiment
Austenitic stainless steel 322 is welded, and passes through attrition process to the surface roughness of higher level, valve seat side is equipped with HCr layers.
Several screw holes 5 are radially offered within one week on valve seat and along valve seat, screw hole 5 is annular along valve seat in the present embodiment
It is uniformly distributed.Cylinder end clamping fixed screw 6 is placed in screw hole 5, and 61 contact of top of cylinder end clamping fixed screw is limited in valve body
On the side wall 311 of slot.Screw baffle ring annular groove 7 is opened up within one week along screw hole side wall, baffle ring 71 is equipped in screw baffle ring annular groove 7, it should
For limiting cylinder end clamping fixed screw 6 to valve seat radial displacement occurs for baffle ring.
Further, sealing ring dovetail groove 8, sealing ring dovetail groove 8 are offered on valve seat and 9 corresponding side of flap
There is gap between flap 9, valve seat insert 81 is placed in sealing ring dovetail groove 8, and by valve seat insert dovetail pressure ring 82
It pushes down, valve seat insert dovetail pressure ring is fixed on valve seat by soket head cap screw and spring washer.
Valve seat metallic sealing section 10, valve seat metallic sealing section and flap phase are equipped on the side being in contact in valve seat with flap
Contact.And 10 pile-up welding hard alloy of valve seat metallic sealing section, and by milled processed, carried while surface abrasion resistance ability is improved
High surface finish is simultaneously, it is also ensured that bubble grade seals.
During flap valve base sealing, flap 9 is contacted with valve seat metallic sealing section 10 generates seal pressure formation primary seal, real
Existing bubble grade sealing；Under lower pressure, due to high, metal using the necessary seal pressure of requirement during valve seat metal sealing
Sealing surface cannot ensure to reach zero leakage sealing, the presence of valve seat insert 81, it is ensured that real in lower pressure lower Disc and valve seat
Now reliable sealing；Under high pressure, the high-pressure medium active force acted on flap 9 makes flap be close to valve seat metallic sealing section
10, and generate seal pressure and form sealing, after flap 9 is bonded stabilization with valve seat 1,81 block media of valve seat insert is golden to valve seat
Belong to 10 direction of sealing surface to move on, medium is avoided to penetrate valve seat metallic sealing section 10, prevents medium in valve seat metallic sealing section
Jet stream is formed on 10 to destroy.
When dismantling valve seat 1, embodiments thereof is：It dismantles first baffle ring 71, the cylindrical end tightening being circumferentially laid out of then dismantling
Then valve seat 1 is realized the dismounting to valve seat by screw 6 from axial taking-up.
The spirit and principle created according to the present invention can also make many variations and modifications, described in above example
Only it is that the present invention illustrates the invention thought of the structure, the one of which of principle and embodiment, the content of the present specification should not be into
For a kind of limitation to the present invention.For those skilled in the art, do not changing basic functional principle and the present invention's
The a variety of variations and modifications made in the case of design are regarded as protection scope of the present invention.
Claims (8)
1. a kind of check-valves for being easily changed valve seat, including valve seat, valve body, valve body has inlet segment, and the inner end of inlet segment is set
There is the valve body seat slot being connected with valve seat, it is characterised in that：Valve body seat slot is included along one week ring-type opened up of inlet segment inner wall
Valve body limiting slot and cricoid logical from the inside top of inlet segment to being opened up between valve body limiting slot along inlet segment inner wall
Slot, the straight slot are connected with valve body limiting slot, and wherein the diameter of valve body limiting slot is more than the diameter of straight slot；The side wall and valve of straight slot
Seated connection touches, and is the mating surface of valve body and valve seat；
A cricoid groove is offered on the side contacted on valve seat and with mating surface, sealing ring is equipped in groove；
On valve seat and along one week screw hole for radially offering no less than one of valve seat, cylinder end clamping fixed screw is placed in screw hole
Interior, the top contact of cylinder end clamping fixed screw is on the side wall of valve body limiting slot；
Screw baffle ring annular groove is opened up within one week along screw hole side wall, baffle ring is equipped in screw baffle ring annular groove, which is used to limit circle
To valve seat radial displacement occurs for styletable holding screw.
2. a kind of check-valves for being easily changed valve seat as described in claim 1, it is characterised in that：It mating surface and contacts
Valve seat side be equipped with wear-and corrosion-resistant layer.
3. a kind of check-valves for being easily changed valve seat as described in claim 2, it is characterised in that：Built-up welding in the mating surface
Austenitic stainless steel.
4. a kind of check-valves for being easily changed valve seat as described in claim 2, it is characterised in that：The valve seat side is equipped with
HCr layers.
5. a kind of check-valves for being easily changed valve seat as described in claim 1, it is characterised in that：It is opposite with flap in valve seat
Sealing ring dovetail groove is offered on the side answered, there is gap, valve seat insert is placed in close between sealing ring dovetail groove and flap
It in seal dovetail groove, and is pushed down by valve seat insert dovetail pressure ring, by soket head cap screw and spring washer by valve seat insert
Dovetail pressure ring is fixed on valve seat.
6. a kind of check-valves for being easily changed valve seat as described in claim 5, it is characterised in that：Connect in valve seat with flap
Tactile side is equipped with valve seat metallic sealing section, and valve seat metallic sealing section is in contact with flap.
7. a kind of check-valves for being easily changed valve seat as described in claim 1, it is characterised in that：Valve seat metallic sealing section table
Surface build-up welding hard alloy.
8. a kind of check-valves for being easily changed valve seat as described in claim 1, it is characterised in that：Screw hole is annular along valve seat
It is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585604.2U CN207514311U (en) | 2017-11-23 | 2017-11-23 | A kind of check-valves for being easily changed valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585604.2U CN207514311U (en) | 2017-11-23 | 2017-11-23 | A kind of check-valves for being easily changed valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514311U true CN207514311U (en) | 2018-06-19 |
Family
ID=62540166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721585604.2U Active CN207514311U (en) | 2017-11-23 | 2017-11-23 | A kind of check-valves for being easily changed valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207514311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253280A (en) * | 2018-11-01 | 2019-01-22 | 温州燧人智能科技有限公司 | A kind of concrete pump control valve and the feeding unit applied to the control valve |
| CN116201931A (en) * | 2023-05-05 | 2023-06-02 | 四川赛尔阀门制造有限公司 | Ball-shaped swing check valve with soft and hard composite sealing device and damping device |
-
2017
- 2017-11-23 CN CN201721585604.2U patent/CN207514311U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253280A (en) * | 2018-11-01 | 2019-01-22 | 温州燧人智能科技有限公司 | A kind of concrete pump control valve and the feeding unit applied to the control valve |
| CN109253280B (en) * | 2018-11-01 | 2024-02-23 | 温州燧人智能科技有限公司 | Concrete pump control valve and material conveying mechanism applied to same |
| CN116201931A (en) * | 2023-05-05 | 2023-06-02 | 四川赛尔阀门制造有限公司 | Ball-shaped swing check valve with soft and hard composite sealing device and damping device |
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