CN110094540A - A kind of adjustable valve body sealing structure of sewage pump pumping hole - Google Patents
A kind of adjustable valve body sealing structure of sewage pump pumping hole Download PDFInfo
- Publication number
- CN110094540A CN110094540A CN201810081032.7A CN201810081032A CN110094540A CN 110094540 A CN110094540 A CN 110094540A CN 201810081032 A CN201810081032 A CN 201810081032A CN 110094540 A CN110094540 A CN 110094540A
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- Prior art keywords
- valve
- valve body
- disk
- barrel
- matching installation
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of adjustable valve body sealing structure of sewage pump pumping hole, the right valve barrel including the installation that matches on the right side of left valve barrel and left valve barrel；The left end of the left valve barrel and the equal Matching installation of the right end of right valve barrel have blow-off connection；Docking between left valve barrel, right valve barrel and blow-off connection is the mode of conical surface socket, and sealing ring I and sealing ring II are equipped in conical surface junction, this structure is while guaranteeing to be coaxial docking, increase sealing area, and immense pressure caused by having dispersed at interface, so that the connection of valve body and sewage pump pumping hole can either guarantee good sealing, and will not be damaged because of high pressure；Circular dashpot is equipped at locating slot on left valve seat, right valve seat, this structure is when the soiling solution temperature that dredge pump is exported is higher, so that the generated pressure of the reason of valve inner is because of rising-heat contracting-cold and deformation are discharged into dashpot, it avoids damaging valve inner part by pressure, extends the service life of valve body.
Description
Technical field
The present invention relates to sewage pump technical field, specially a kind of adjustable valve body sealing structure of sewage pump pumping hole.
Background technique
Now with the enhancing of environmental consciousness, sewage pump using more and more extensive, and the pollution discharge capability of sewage pump with
Technology innovation progress also in enhancing gradually, due to typically contained in sewage a large amount of irregular shape fiber, big
Grain, poisonous metal particle etc., are easy to be wrapped on impeller when the impeller of dredge pump is smaller, so using the biggish blowdown of discharge capacity
Pump is wound to solve the problems, such as that drain outlet is blocked with impeller with this.
The volume of big flow dredge pump in the prior art is generally bigger, the pumping hole of the following dredge pump also compared with
Greatly, and in order to facilitate pipeline docking external on dredge pump, and maintenance is repaired to dredge pump, and to blowdown pump discharge
Adjusting, generally can pacify adjustable valve body in dredge pump pumping hole.
Because the dredge pump pumping hole output pressure of big flow is bigger, and pumping hole docks the close of place with valve body in the prior art
Envelope, which is utilized at docking, clamps this sealing means of gasket, and sphere and ball valve seated connection is usually used in the sealing of valve inner
This sealing means of sealing are touched, this sealing means have the disadvantage in that
1. the seal washer in pumping hole junction rises outward next time in high pressure when blowdown pump output pressure is excessive
It opens, and then loses sealability；
2. when the soiling solution temperature that dredge pump is exported is higher, entire valve body and pumping hole can because the reason of rising-heat contracting-cold to
Junction discharges bigger extruding force, can squeeze gasket when extruding force is excessive broken, and gasket can lose sealing function at this time；
3. the temperature of entire valve inner also increases, in valve body when the soiling solution temperature that dredge pump is exported is higher
Portion squeezes valve seat and sphere, valve seat can be damaged when pressure is larger because of the reason of rising-heat contracting-cold discharges big pressure to valve seat
And sphere, so that entire valve body is failed.
Existing technical literature:
[Chinese invention] CN201510966718.0
[Chinese invention] CN201410771330.0
[Chinese invention] CN201410025465.2
[Chinese invention] CN201510189230.1
Summary of the invention
The purpose of the present invention is to provide a kind of adjustable valve body sealing structures of sewage pump pumping hole, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme: a kind of adjustable valve seal knot of sewage pump pumping hole
Structure, the right valve barrel including the installation that matches on the right side of left valve barrel and left valve barrel；
The left end of the left valve barrel and the equal Matching installation of the right end of right valve barrel have blow-off connection；
The left valve barrel by left side meet disk I, the connecting tube I for connecing disk II and centre of right end is constituted, connecting tube I pipe
Interior left end is drawn to the end face for meeting disk I inner conical surface I, and the right side for meeting disk II is equipped with the male cone (strobilus masculinus) I of protrusion, and connects
Right end in pipe I pipe draws the locating slot for having annular to the end face for meeting disk II, and Matching installation has left valve seat in the locating slot；
The main body of the right valve barrel is the main valve body of shell structure, and the left end of the main valve body, which is equipped with, connects disk III, the right side
The right end of valve body is equipped with and meets disk IV, and connects and be connected between disk IV and main valve body by connecting tube II；
There is inner conical surface II in the left end of the main valve body inner wall to meeting disk III and draw, and the inner conical surface II and male cone (strobilus masculinus) I are to matching
Installation, the inner conical surface II are equipped with seal groove I, and Matching installation has sealing ring I in the seal groove I；
Left side in the connecting tube II pipe and it is located on the right side wall body of main valve body and is again provided with locating slot, and this is fixed
Matching installation has right valve seat in the slot of position；
The centre of the main valve body is equipped with the sphere for the installation that matches with left valve seat, right valve seat, and the upper end of the sphere is set
There is T-slot, Matching installation has valve rod in the T-slot, and the upper end Matching installation of the valve rod has handle；
The blow-off connection by left end connecting tube III with meet disk V set by connecting tube III right end and form, it is described to meet disk V
Right end be equipped with male cone (strobilus masculinus) II, the male cone (strobilus masculinus) II and inner conical surface I and match installation, the male cone (strobilus masculinus) II is equipped with seal groove
Matching installation has sealing ring II in II, the seal groove II.
Preferably, the sealing ring II is the cone structure of annular, and the sealing ring II is by being located at external housing and setting
It is formed in internal inner core, and sealing ring I is identical as the structure of sealing ring II.
Preferably, the main body of the housing is coniform toroidal shell structure, and the main body of the inner core is coniform
Ring structure.
Preferably, the slot bottom of the locating slot of the left valve seat and right valve seat institute Matching installation is equipped with circular dashpot.
Preferably, the left valve seat and right valve seat are the elastic structure of annular.
Compared with prior art, the beneficial effects of the present invention are:
1. docking between left valve barrel, right valve barrel and blow-off connection is the mode of conical surface socket, guarantee concentric same
When, sealing area is increased, keeps the sealing at valve body both ends more stable；
2. sealing ring I and sealing ring II are circular cone structure, this make left valve barrel, right valve barrel and blow-off connection it
Between sealing area increase, and the immense pressure generated on tube wall can be dispersed when blowdown pipe pressure is higher, so that valve body
Connection with sewage pump pumping hole can either guarantee good sealing, and will not damage because of high pressure；
3. left valve seat, right valve seat match with left valve barrel, right valve barrel respectively, the slot bottom angle of the locating slot of installation is equipped with
Circular dashpot, this structure is when the soiling solution temperature that dredge pump is exported is higher, so that valve inner is because of rising-heat contracting-cold
The reason of generated pressure and deformation discharged into dashpot, avoid squeezing valve seat and sphere, effectively protect valve seat and
Sphere extends the service life of valve body.
Detailed description of the invention
Fig. 1 is structure of the invention main view；
Fig. 2 is structure of the invention axis side view；
Fig. 3 is cross-section structure view of the present invention；
Fig. 4 is part-structure enlarged diagram at A in Fig. 3；
Fig. 5 is part-structure enlarged diagram at B in Fig. 3.
In figure: 1 left valve barrel, 2 right valve barrels, 3 blow-off connections, 101 meet disk I, 102 connecting tube I, 103 meet disk II, in 104
Conical surface I, 105 male cone (strobilus masculinus) I, 106 dashpots, 201 main valve bodies, 202 meet disk III, 203 connecting tube II, 204 meet disk IV, 205 balls
Body, 206 left valve seats, 207 right valve seats, 208 valve rods, 209 handles, 210 inner conical surface II, 211 seal groove I, 212 sealing ring I, 301
Connect disk V, 302 connecting tube III, 303 male cone (strobilus masculinus) II, 304 sealing ring II, 305 seal groove II, 30401 housings, 30402 inner cores.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5 is please referred to, the present invention provides a kind of technical solution: a kind of adjustable valve body sealing structure of sewage pump pumping hole,
Right valve barrel 2 including the installation that matches on the right side of left valve barrel 1 and left valve barrel 1；
The left end of left valve barrel 1 and the equal Matching installation of right end of right valve barrel 2 have blow-off connection 3；
Left valve barrel 1 by left side connect disk I 101, right end connect disk II 103 and centre connecting tube I 102 constitute, connect
Left end in 102 pipe of pipe I is drawn to the end face for meeting disk I 101 inner conical surface I 104, connects the right side of disk II 103 equipped with convex
The male cone (strobilus masculinus) I 105 risen, and the right end in 102 pipe of connecting tube I draws the locating slot for having annular to the end face for meeting disk II 103, it is fixed
Matching installation has left valve seat 206 in the slot of position；
The main body of right valve barrel 2 is the main valve body 201 of shell structure, and the left end of main valve body 201, which is equipped with, meets disk III 202, right
The right end of valve body 2 is equipped with and meets disk IV 204, and connects and be connected between disk IV 204 and main valve body 201 by connecting tube II 203；
There is inner conical surface II 210 in the left end of 201 inner wall of main valve body to meeting disk III 202 and draw, inner conical surface II 210 and male cone (strobilus masculinus)
I 105 is equipped with seal groove I 211 to Matching installation, inner conical surface II 210, and Matching installation has sealing ring I in seal groove I 211
212；
Left side in 203 pipe of connecting tube II and it is located on the right side wall body of main valve body 201 and is again provided with locating slot, and
Matching installation has right valve seat 207 in this locating slot；
The centre of main valve body 201 is equipped with the sphere 205 for the installation that matches with left valve seat 206, right valve seat 207, sphere 205
Upper end is equipped with T-slot, and Matching installation has valve rod 208 in T-slot, and the upper end Matching installation of valve rod 208 has handle 209；
Blow-off connection 3 meets disk V301 set by 302 right end of left end connecting tube III 302 and connecting tube III and forms,
The right end for meeting disk V 301 is equipped with male cone (strobilus masculinus) II 303, male cone (strobilus masculinus) II 303 and inner conical surface I 104 and matches installation, male cone (strobilus masculinus) II
303 are equipped with seal groove II 305, and Matching installation has sealing ring II 304 in seal groove II 305, wherein left valve barrel 1, right valve
Docking mode between 3 three of body 2 and blow-off connection is that the conical surface is located by connecting, and this structure both ensure that between delivery pipe
Be coaxial docking, in turn ensure at interface have bigger sealing area, and at the conical surface be equipped with sealing ring I 212 with it is close
Seal II 304, sealing structure of this set on the conical surface, when the output pressure ratio of pumping hole is larger, the conical surface can drop
Pressure between low pumping hole and valve body joint face, to protect entire sealing structure, and left valve barrel 1, right valve barrel 2 respectively with a left side
The slot bottom for the locating slot that valve seat 206, right valve seat 207 match is equipped with dashpot 106, the soiling solution that kind structure is exported in dredge pump
When temperature is higher, so that the generated pressure of the reason of valve inner is because of rising-heat contracting-cold and deformation are discharged into dashpot 106,
It avoids squeezing left valve seat 206, right valve seat 207 and sphere 205, effectively protects left valve seat 206, right valve seat 207 and sphere
205, extend the service life of valve body.
Further, sealing ring II 304 is the cone structure of annular, and this structure can obtain ratio in conical surface connection
Biggish sealing surface, sealing ring II 304 are formed by being located at external housing 30401 with internal inner core 30402 is located at, and close
Seal I 212 is identical as the structure of sealing ring II 304.
Further, the main body of housing 30401 is coniform toroidal shell structure, and the material of housing is chosen as fluorine herein
Rubber, the main body of inner core 30402 are coniform ring structure, and the material of inner core is chosen as 20 steel or stainless for 304 herein
Steel, this structure had both made sealing ring I 212 and sealing ring II 304 that can either obtain good leakproofness because of flexible deformation
Again good rigid can be obtained because of the rigidity of core.
Further, the slot bottom of the locating slot of 207 Matching installations of left valve seat 206 and right valve seat is equipped with circular dashpot
106, this circular dashpot 106 makes entire valve body in applied at elevated temperature, and valve body produces the thermal deformation stress risen can be to
It is collapsed in dashpot 106, avoid causes left valve seat 206 and right valve seat 207 to be opened because oppressing left valve seat 206 and right valve seat 207
It splits, and then valve seal is caused to fail.
Further, left valve seat 206 and right valve seat 207 are the elastic structure of annular, so that entire valve inner exists
While obtaining sealing, the friction with sphere 205 is reduced, the service life of valve body is extended.
Working condition: the docking mode between 3 three of left valve barrel 1, right valve barrel 2 and blow-off connection is that conical surface positioning connects
It connecing, this structure both ensure that being coaxial docking between delivery pipe, in turn ensure that there is bigger sealing area at interface, and
And sealing ring I 212 and sealing ring II 304, sealing structure of this set on the conical surface, in the defeated of pumping hole are equipped at the conical surface
When pressure ratio is larger out, the conical surface can reduce the pressure between pumping hole and valve body joint face, to protect entire sealing
Structure, and the slot bottom for the locating slot that left valve barrel 1, right valve barrel 2 match with left valve seat 206, right valve seat 207 respectively is equipped with dashpot
106, this structure is when the soiling solution temperature that dredge pump is exported is higher, so that valve inner is produced because of the reason of rising-heat contracting-cold
Raw pressure and deformation is discharged into dashpot 106, avoids squeezing left valve seat 206, right valve seat 207 and sphere 205, effective to protect
Left valve seat 206, right valve seat 207 and sphere 205 have been protected, the service life of valve body is extended.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of adjustable valve body sealing structure of sewage pump pumping hole, it is characterised in that: right including left valve barrel (1) and left valve barrel (1)
Side matches the right valve barrel (2) of installation；
The left end of the left valve barrel (1) and the equal Matching installation of right end of right valve barrel (2) have blow-off connection (3)；
The left valve barrel (1) connects disk I (101), the connecing of right end disk II (103) and intermediate connecting tube I (102) structure by left side
At the left end in connecting tube I (102) pipe is drawn to the end face for meeting disk I (101) to be had inner conical surface I (104), described to meet disk II
(103) right side is equipped with the male cone (strobilus masculinus) I (105) of protrusion, and the right end in connecting tube I (102) pipe is to connecing disk II's (103)
The locating slot for having annular is drawn in end face, and Matching installation has left valve seat (206) in the locating slot；
The main body of the right valve barrel (2) is the main valve body (201) of shell structure, and the left end of the main valve body (201), which is equipped with, connects disk
III (202), the right end of the right valve barrel (2), which is equipped with, connects disk IV (204), and connects and lead between disk IV (204) and main valve body (201)
Connecting tube II (203) is crossed to be connected；
The left end of main valve body (201) inner wall has inner conical surface II (210) to meeting disk III (202) and draw, the inner conical surface II
(210) with male cone (strobilus masculinus) I (105) to Matching installation, the inner conical surface II (210) is equipped with seal groove I (211), the seal groove I
(211) interior Matching installation has sealing ring I (212)；
Left side in connecting tube II (203) pipe and it is located on the right side wall body of main valve body (201) and is again provided with locating slot,
And Matching installation has right valve seat (207) in this locating slot；
The centre of the main valve body (201) is equipped with the sphere (205) for the installation that matches with left valve seat (206), right valve seat (207),
The upper end of the sphere (205) is equipped with T-slot, and Matching installation has valve rod (208) in the T-slot, the valve rod (208) it is upper
End Matching installation has handle (209)；
The blow-off connection (3) connects disk V (301) as set by left end connecting tube III (302) and connecting tube III (302) right end
Composition, the right end for meeting disk V (301) are equipped with male cone (strobilus masculinus) II (303), the male cone (strobilus masculinus) II (303) and inner conical surface I (104) phase
Matching installation, the male cone (strobilus masculinus) II (303) are equipped with seal groove II (305), and the interior Matching installation of the seal groove II (305) has close
Seal II (304).
2. a kind of adjustable valve body sealing structure of sewage pump pumping hole according to claim 1, it is characterised in that: the sealing
The cone structure that II (304) are annular is enclosed, the sealing ring II (304) is by being located at external housing (30401) and being located inside
Inner core (30402) composition, and sealing ring I (212) is identical as the structure of sealing ring II (304).
3. a kind of adjustable valve body sealing structure of sewage pump pumping hole according to claim 2, it is characterised in that: the housing
(30401) main body is coniform toroidal shell structure, and the main body of the inner core (30402) is coniform ring structure.
4. a kind of adjustable valve body sealing structure of sewage pump pumping hole according to claim 1, it is characterised in that: the left valve
The slot bottom of the locating slot of seat (206) and right valve seat (207) institute Matching installation is equipped with circular dashpot (106).
5. a kind of adjustable valve body sealing structure of sewage pump pumping hole according to claim 1, it is characterised in that: the left valve
Seat (206) and right valve seat (207) are the elastic structure of annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081032.7A CN110094540A (en) | 2018-01-28 | 2018-01-28 | A kind of adjustable valve body sealing structure of sewage pump pumping hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810081032.7A CN110094540A (en) | 2018-01-28 | 2018-01-28 | A kind of adjustable valve body sealing structure of sewage pump pumping hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110094540A true CN110094540A (en) | 2019-08-06 |
Family
ID=67442570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810081032.7A Pending CN110094540A (en) | 2018-01-28 | 2018-01-28 | A kind of adjustable valve body sealing structure of sewage pump pumping hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110094540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398473A (en) * | 2023-06-08 | 2023-07-07 | 合肥化机装备制造有限公司 | Spherical sealing joint for engine turbopump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3915640A1 (en) * | 1989-05-12 | 1990-11-15 | Reinz Dichtungs Gmbh | Metal enclosure in hole in flat seal - consists of outer and inner ring with outer and inner cone |
| JPH07113469A (en) * | 1993-10-18 | 1995-05-02 | Nippon Pillar Packing Co Ltd | Gasket for insertion flange |
| CN201116634Y (en) * | 2007-10-24 | 2008-09-17 | 华中科技大学郑州研究院 | Conical surface O-shaped ring sealing type pipeline mobile joint |
| CN203082212U (en) * | 2012-11-23 | 2013-07-24 | 杭州麦克密封材料有限公司 | Sealing ring for exhaust pipe of motorcycle |
| CN204004546U (en) * | 2014-08-11 | 2014-12-10 | 苏州纽威阀门股份有限公司 | A kind of valve seat of upper dress ball valve and the ball valve of this valve seat is installed |
| CN106247045A (en) * | 2016-08-28 | 2016-12-21 | 石延宾 | A kind of oil connection |
| CN206904283U (en) * | 2017-06-16 | 2018-01-19 | 研苛（上海）阀门工业有限公司 | Ball valve |
-
2018
- 2018-01-28 CN CN201810081032.7A patent/CN110094540A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3915640A1 (en) * | 1989-05-12 | 1990-11-15 | Reinz Dichtungs Gmbh | Metal enclosure in hole in flat seal - consists of outer and inner ring with outer and inner cone |
| JPH07113469A (en) * | 1993-10-18 | 1995-05-02 | Nippon Pillar Packing Co Ltd | Gasket for insertion flange |
| CN201116634Y (en) * | 2007-10-24 | 2008-09-17 | 华中科技大学郑州研究院 | Conical surface O-shaped ring sealing type pipeline mobile joint |
| CN203082212U (en) * | 2012-11-23 | 2013-07-24 | 杭州麦克密封材料有限公司 | Sealing ring for exhaust pipe of motorcycle |
| CN204004546U (en) * | 2014-08-11 | 2014-12-10 | 苏州纽威阀门股份有限公司 | A kind of valve seat of upper dress ball valve and the ball valve of this valve seat is installed |
| CN106247045A (en) * | 2016-08-28 | 2016-12-21 | 石延宾 | A kind of oil connection |
| CN206904283U (en) * | 2017-06-16 | 2018-01-19 | 研苛（上海）阀门工业有限公司 | Ball valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398473A (en) * | 2023-06-08 | 2023-07-07 | 合肥化机装备制造有限公司 | Spherical sealing joint for engine turbopump |
| CN116398473B (en) * | 2023-06-08 | 2023-08-18 | 合肥化机装备制造有限公司 | Spherical sealing joint for engine turbopump |
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Application publication date: 20190806 |