CN111486248A - Slurry ball valve for shield tunneling machine - Google Patents
Slurry ball valve for shield tunneling machine Download PDFInfo
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- CN111486248A CN111486248A CN201911375710.1A CN201911375710A CN111486248A CN 111486248 A CN111486248 A CN 111486248A CN 201911375710 A CN201911375710 A CN 201911375710A CN 111486248 A CN111486248 A CN 111486248A
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- ball
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- 239000002002 slurry Substances 0.000 title claims abstract description 45
- 230000005641 tunneling Effects 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000001050 lubricating effect Effects 0.000 claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims 1
- 239000004927 clay Substances 0.000 description 10
- 239000002893 slag Substances 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000010433 feldspar Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- F16K5/06—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 with plugs having spherical surfaces; Packings therefor
- F16K5/0605—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 with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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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
- F16K5/06—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 with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- 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
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
-
- 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
- F16K5/22—Features relating to lubrication
- F16K5/227—Features relating to lubrication for plugs with spherical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a slurry ball valve for a shield tunneling machine, in particular to a multiphase flow ball valve for slurry and the like. The specific technical scheme is as follows: a slurry ball valve. The sealing device comprises a middle body, a left valve cover, a right valve cover and an inlet and outlet channel arranged on the valve covers, wherein the inner cavity is provided with a ball core, the end part of an O-shaped spherical flow channel is provided with a flow discharge port, the ball core is supported on an upper valve rod and a lower bottom cover, and the inner cavity of the left valve cover is provided with a support ring, an elastic valve seat support ring, a valve seat sealing ring, an elastic loading element and other parts which are matched with the ball core to form a sealing pair for cutting. The rear end of the support ring and the rear end of the inner cavity of the valve cover form a movable V-shaped slurry discharge groove. Meanwhile, a high-pressure flushing valve, a high-pressure glue injection sealing device, a high-pressure lubricating device and the like are arranged at the middle body and the bottom cover. Adopt above-mentioned scheme to provide a can prevent card and hinder, resistant erodeing, the slurry ball valve that the leakproofness is good, the stable performance.
Description
Technical Field
The invention relates to a slurry ball valve for a shield tunneling machine.
Background
Complicated ground texture and tunnel penetration during shield tunnelingThe hardness of the geological layer is usually uneven, the construction of the tunnel face medium cut by the cutterhead at the front end is complex, and the composition of the tunnel face medium is ① layers, namely, miscellaneous filling (Q)4 me): grayish yellow, brick red, slightly dense and saturated, mainly fine sand, about 30 percent of brick scraps and a small amount of hard impurities are contained, the cementation is poor, the soil quality of the layer is uneven, and the engineering property is poor.
② layer-silty clay (Q)4 al): grey black, wet, mainly clay, inferior in powder, moderate in dry strength, uneven in soil quality, rough in section, and partially sandwiched with thin layer of silt.
③ 1 layer-silty clay (Q)4 al): tan or grey brown, plastic, soft local, moderate dry strength. The soil layer is uneven and is filled with thin-layer silt or silt.
③ 2 layer-silt (Q)4 al) Yellow brown, saturated, loose to slightly dense, poor grain composition, and very thin layer of powdery clay, the main mineral components are quartz, feldspar, etc. Is divided into
③ 3 layer-silty clay (Q)4 al): grayish brown, soft plastic, local flow plastic, moderate dry strength.
③ 4 layer-silt (Q)4 al) The clay is dark gray, saturated, slightly dense, poor in particle size distribution, and contains very thin layers of powdery clay, and the main mineral components are quartz, feldspar and the like.
③ 5 layer-silty clay (Q)4 al): grayish brown, soft plastic, local flow plastic and moderate dry strength. The soil layer is uneven and is filled with thin-layer silt or silt.
③ 6 layer-silt (Q)4 al) The clay is dark gray, saturated, medium dense, poor in particle size distribution, and contains very thin layers of powdery clay, and the main mineral components are quartz, feldspar and the like.
The slurry mixed by various geological layers is conveyed to the ground through a pipeline, and a slurry ball valve is particularly critical in controlling the media. The complex slurry can block and scour the slurry ball valve, and the sealing performance and the operation construction efficiency are seriously influenced. Therefore, a slurry ball valve which overcomes working conditions is needed to meet the use requirement.
Disclosure of Invention
The invention aims to provide a slurry ball valve for a shield tunneling machine, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a slurry ball valve for a shield tunneling machine comprises a middle body, a left valve cover, a right valve cover and an inlet and outlet channel, wherein a ball core is arranged in the middle of the inlet and outlet channel, inner holes are arranged at the upper end and the lower end of the ball core and are matched with a connecting shaft hole shaft of an upper valve rod and a connecting shaft hole shaft of a lower cover, an inner hole at the upper end of the ball core is connected with one end of the upper valve rod, an inner hole at the lower end of the ball core is connected with one end of a connecting shaft of;
the bottom of the lower bottom cover is connected with a high-pressure lubricating device, a liquid outlet of the high-pressure lubricating device is communicated with a through hole arranged in the connecting shaft, and the end part of the connecting shaft is provided with a sliding bearing and a plane bearing;
a support ring is arranged in the inner cavity of the left valve cover, a 5-degree inclined plane is processed at the front end part of the support ring, and an elastic element is arranged between the support ring and the left valve cover and is a 15-degree inclined plane plate;
the supporting ring is provided with a rectangular groove, an O-shaped sealing cladding ring and a dustproof ring are arranged in the groove, an annular groove is arranged at the joint of the supporting ring and the ball core, the O-shaped ring is arranged at the bottom of the annular groove, an elastic valve seat supporting ring is arranged in the middle of the annular groove, and the elastic valve seat supporting ring is connected with a valve seat sealing ring; the rear end of the support ring and the rear end of the inner cavity of the left valve cover form a movable V-shaped slurry discharge groove.
Preferably, a high-pressure flushing valve and a high-pressure glue injection sealing device are arranged in the middle body.
Preferably, one end of the upper valve rod is connected with an inner hole at the upper end of the ball core through 4 cylindrical pins.
Preferably, the flushing device is provided with a back-flow-proof swing check valve.
Preferably, a ratchet piece is arranged at the joint of the middle body, the left valve cover and the right valve cover.
Preferably, the upper valve stem is provided with a thrust washer at the step.
Preferably, a sealing spacer ring is arranged at the contact position of the connecting shaft and the inner orifice edge of the ball core, and the sealing spacer ring is provided with an O-shaped sealing ring.
Preferably, the upper part of the upper valve rod and the stepped holes at the upper parts of the front cover and the middle body are sealed by adopting a double-channel O-shaped gasket.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, the slurry ball valve is washed and backwashed by the washing device, and the medium does not flow back, so that the effective construction is guaranteed.
2) The V-shaped slag discharge groove provided by the invention can prevent small clearance deposition of slag in the moving process of the support ring, can ensure the flow of a medium along with a main pipeline, and further prevents blockage of the slag.
3) The slurry ball valve is provided with the one-way single valve seat, so that a medium deposition cavity of the slurry ball valve is avoided, and the slurry ball valve is only arranged at the upstream and the downstream, so that an O-shaped ball core is effectively prevented from being clamped in the double seats, and the service life of the slurry ball valve is prolonged.
4) According to the invention, the elastic element is a 15-degree bevel edge plate, and the front part and the rear part of the elastic element are positioned in the middle of sealing, so that the elastic element is not influenced by medium slag, and primary sealing is ensured.
5) According to the invention, through the upper valve rod and the bottom cover, online sealing and lubrication are realized by using the upper valve rod and the bottom cover, the sealing of a moving part is effectively ensured, and the opening and closing torque is reduced.
6) The wear-resistant layer can bear the scouring of high-flow-rate slurry, further meets the requirements of working conditions and prolongs the service life.
7) The ratchet-shaped gasket can effectively prevent the sealing stability caused by the vibration of tunneling.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view at B in FIG. 1;
FIG. 3 is an enlarged view at C of FIG. 1;
FIG. 4 is an enlarged view at A in FIG. 1;
fig. 5 is an enlarged view at D in fig. 1.
In the figure: 1 left valve cover, 2 flushing device, 11 middle body, 5V-shaped slurry discharge groove, 6 connecting shaft, 7 elastic element, 10 through hole, 13O-shaped sealing coating ring, 14O-shaped gasket, 17 lower bottom cover, 21 ball core, 24 elastic valve seat supporting ring, 26 dustproof ring, 33 inlet and outlet channel, 36 driving device, 45 thrust gasket, 53 ratchet sheet, 56 high-pressure lubricating device, 61 parallel key, 66 upper valve rod, 70 cylindrical pin, 73 front cover, 74 supporting ring, 85 sealing spacer ring, 113 right valve cover, 163O-shaped ring, 185 backflow-proof rotary-opening check valve, 191O-shaped sealing ring, 313 valve seat sealing ring, 351 high-pressure glue injection sealing device, 432 plane bearing and 438 sliding bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a slurry ball valve for a shield tunneling machine comprises a middle body 11, a left valve cover 1, a right valve cover 113 and an inlet and outlet channel 33, wherein a ball core 21 is arranged in the middle of the inlet and outlet channel 33, inner holes arranged at the upper end and the lower end of the ball core 21 are matched with holes of an upper valve rod 66 and a connecting shaft 6 of a lower bottom cover 17 in a shaft mode, an inner hole at the upper end of the ball core 21 is connected with one end of the upper valve rod 66, an inner hole at the lower end of the ball core is connected with one end of the connecting shaft 6 of the lower bottom cover 17, and the;
the bottom of the lower bottom cover 17 is connected with a high-pressure lubricating device 56, a liquid outlet of the high-pressure lubricating device 56 is communicated with a through hole 10 arranged in the connecting shaft 6, and the end part of the connecting shaft 6 is provided with a sliding bearing 438 and a plane bearing 432;
a support ring 74 is arranged in the inner cavity of the left valve cover 1, a 5-degree inclined plane is processed at the front end of the support ring, an elastic element 7 is arranged between the support ring 74 and the left valve cover 1, and the elastic element 7 is a 15-degree inclined-edge plate;
a rectangular groove is formed in the support ring 74, an O-shaped sealing coating ring 13 and a dustproof ring 26 are arranged in the groove, an annular groove is formed in the joint of the support ring 74 and the ball core 21, an O-shaped ring 163 is arranged at the bottom of the annular groove, an elastic valve seat support ring 24 is arranged in the middle of the annular groove, and the elastic valve seat support ring 24 is connected with a valve seat sealing ring 313; the rear end of the support ring 74 and the rear end of the inner cavity of the left valve cover 1 form a movable V-shaped slurry discharge groove 5.
When the shield tunneling machine normally works and tunnels, the slurry ball valve can be in a fully-open state and a fully-closed state at different valve positions. The slurry may be delivered forward or backward through a slurry ball valve. The event sets up the thick liquid ball valve in the valve position of difference, because the demand of operating mode, the thick liquid ball valve can carry out valve opening, valve closing and valve regulation according to the demand.
The ball core 21 is placed in the middle of the middle body 11, the left valve cover 1 and the right valve cover 113, the upper and lower ends of the ball core 21 are provided with inner holes to be matched with the upper valve rod 66 and the end hole of the bottom cover 17, the end of the upper valve rod 66 is provided with 4 cylindrical pins 70 to be matched with the round corners of the ball core 21 in a positioning way, the end of the bottom cover 17 is provided with a sliding bearing 438 and a plane bearing 432, the sliding bearing 438 and the plane bearing 432 are placed in a totally closed space, the sealing spacer ring 85 at the lower bottom cover 17 is provided with an O-shaped sealing ring 191 to prevent external slurry from entering and grease from being easily discharged from the high-pressure lubricating grease injecting device 56, the bottom of the lower bottom cover 17 is connected with the high-pressure lubricating device 56, the liquid outlet of the high-pressure lubricating device 56 is communicated with the through hole 10 arranged in the connecting shaft 6, the end of the connecting shaft, thereby ensuring that the bottom cap 17 and the core 21 rotate relatively in a high liquid state, which greatly reduces the torque of the slurry ball valve. In order to prevent damage under the condition of instantaneous high pressure difference, the runner and the outer surface of the ball core 21 are covered with a wear-resistant layer, and the wear-resistant layer is formed by compounding multiple alloys and has high compactness and high bonding strength. In addition, three V-shaped slurry discharge grooves 5 are arranged at the end part of the flow passage of the ball core 21, and when the ball core 21 is opened instantly, high pressure difference at the upstream can be discharged instantly.
The upper end and the lower end of the upper valve rod 66 are connected to the driving device 36 and the ball core 21, respectively. The upper end of the upper valve rod 66 is provided with a 180-degree parallel key 61, and the lower end of the upper valve rod 66 is driven by adopting 4 positioning pins 70 in a matching way. The middle part of the upper valve rod 66 is provided with dustproof O-shaped gaskets 14 and 27 to ensure that slurry cannot enter the upper part of the upper valve rod 66 to influence sealing and bring blockage. The upper part of the whole upper valve rod 66 and the stepped holes on the front cover 73 and the upper part of the middle body 11 are sealed by a double-channel O-shaped gasket 14 and strengthened by an online high-pressure sealing glue injection device 351. In addition, the step of the upper valve rod 66 is provided with a thrust gasket 45 for bearing the thrust of the pipeline medium and reducing friction. In order to prevent the looseness of the connecting disc at the upper part of the middle body 11 and the driving device 36 caused by large torque, the connecting disc on the middle body 11 is integrated, and a crack-preventing pin is clamped for locking.
The middle body 11 is provided with 3 flushing devices 2 to ensure the cleanness of the ball core 21 and the inner cavity of the middle body 11, and the flushing devices 2 are provided with a back-flow-proof swing check valve 185 to prevent slurry from flowing into a clear water pipeline. The left valve cover 1, the right valve cover 113 and the middle body 11 are sealed in a double-sealing mode of two O-shaped rings 8, and particularly the radial and axial sealing of the left valve cover 1 and the right valve cover 113 is realized. In order to ensure that the medium does not flow outwards, the ratchet piece 53 is arranged at the joint of the middle body 11, the left valve cover 1 and the right valve cover 113, and when the stud and the nut apply torque, the ratchet piece 53 can ensure the looseness and creep of the bolt and the nut caused by the pulling force of the pipeline and the vibration of the machine in the tunneling process. In order to prevent blockage, V-shaped slag discharge grooves are formed in the rear end part of the left valve cover 1 and the rear end part of the support ring 74, and deposited slurry slag is driven to flow away along with a pipeline medium when the support ring 74 is pushed by the medium pressure. In order to prevent jamming, the elastic element 7 on the support ring 74 is placed in the middle of the front and rear seals, and the elastic element 7 can efficiently maintain an elastic state and ensure initial specific sealing pressure by utilizing a 5-degree inclined surface of the head part of the support ring 74. In order to prevent jamming, the support ring 74 is provided with a rectangular groove which is matched with the O-shaped sealing coating ring 13 and the dustproof ring 26, so that the damage caused by slurry slag is further prevented. In order to ensure the safety and reliability of the sealing, the front end of the support ring 74 is axially provided with an annular groove, the bottom of the annular groove is provided with an O-shaped ring 163 for blocking the flowing of the medium, and the annular groove opened on the support ring 74 is matched with the valve seat sealing ring 313 and the elastic valve seat support ring 24. The elastic valve seat supporting ring 24 and the annular groove of the supporting ring 74 clamp the valve seat sealing ring 313, interference fit is adopted, the outer part of the valve seat sealing ring 313 is processed by rolling and wrapping, and the use safety of the valve seat sealing ring 313 is greatly improved. In order to further improve the performance of the slurry ball valve, the elastic valve seat support ring 24 is made of alloy, the elastic valve seat support ring 24 clamps the valve seat ring 313 to ensure that the valve seat ring is not easy to flush, and the hard elastic support ring 24 scrapes off slurry and attachments on the surface of the ball core 21.
The thick liquid ball valve sets up a one-way single disk seat, guarantees that the thick liquid ball valve does not have medium deposit cavity, and the thick liquid ball valve only exists upper and lower reaches simultaneously, effectively guarantees that ball core 21 can not die in the card of double seat, has prolonged the life cycle of thick liquid ball valve.
The driving device 36 is provided with a stroke controller which can control at each angle, so that the pressure and flow of the ball core 21 can be regulated at multiple positions.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a shield constructs thick liquid ball valve for entry driving machine, includes midbody (11), left valve gap (1), right valve gap (113) and import and export passageway (33), characterized by: the middle part of the inlet and outlet channel (33) is provided with a ball core (21), the upper end part and the lower end part of the ball core (21) are provided with inner holes which are matched with the hole shafts of the upper valve rod (66) and the connecting shaft (6) of the lower bottom cover (17), the inner hole at the upper end of the ball core (21) is connected with one end of the upper valve rod (66), the inner hole at the lower end is connected with one end of the connecting shaft (6) of the lower bottom cover (17), and the other end of the upper valve rod (66) penetrates through the middle body (11;
the bottom of the lower bottom cover (17) is connected with a high-pressure lubricating device (56), a liquid outlet of the high-pressure lubricating device (56) is communicated with a through hole (10) arranged in the connecting shaft (6), and a sliding bearing (438) and a plane bearing (432) are arranged at the end part of the connecting shaft (6);
a support ring (74) is arranged in the inner cavity of the left valve cover (1), a 5-degree inclined plane is processed at the front end of the support ring, an elastic element (7) is arranged between the support ring (74) and the left valve cover (1), and the elastic element (7) is a 15-degree inclined-edge plate;
the supporting ring (74) is provided with a rectangular groove, an O-shaped sealing coating ring (13) and a dustproof ring (26) are arranged in the groove, an annular groove is formed at the joint of the supporting ring (74) and the ball core (21), an O-shaped ring (163) is arranged at the bottom of the annular groove, an elastic valve seat supporting ring (24) is arranged in the middle of the annular groove, and the elastic valve seat supporting ring (24) is connected with a valve seat sealing ring (313); the rear end part of the support ring (74) and the rear end part of the inner cavity of the left valve cover (1) form a movable V-shaped slurry discharge groove (5).
2. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: and a high-pressure flushing valve (2) and a high-pressure glue injection sealing device (351) are arranged in the middle body (11).
3. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: one end of the upper valve rod (66) is connected with an inner hole at the upper end of the ball core (21) through 4 cylindrical pins (70).
4. The slurry ball valve for the shield tunneling machine according to claim 2, wherein: the flushing device (2) is provided with a swing check valve (185) for preventing backflow.
5. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: ratchet plates (53) are arranged at the joints of the middle body (11), the left valve cover (1) and the right valve cover (113).
6. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: and a thrust washer (45) is arranged at the step of the upper valve rod (66).
7. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: and a sealing spacer ring (85) is arranged at the contact position of the connecting shaft (6) and the inner orifice edge of the ball core (21), and the sealing spacer ring (85) is provided with an O-shaped sealing ring (191).
8. The slurry ball valve for the shield tunneling machine according to claim 1, which is characterized in that: the upper part of the upper valve rod (66) and the stepped holes on the front cover (73) and the upper part of the middle body (11) are sealed by adopting a double-channel O-shaped gasket (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375710.1A CN111486248A (en) | 2019-12-27 | 2019-12-27 | Slurry ball valve for shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911375710.1A CN111486248A (en) | 2019-12-27 | 2019-12-27 | Slurry ball valve for shield tunneling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111486248A true CN111486248A (en) | 2020-08-04 |
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ID=71794303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911375710.1A Pending CN111486248A (en) | 2019-12-27 | 2019-12-27 | Slurry ball valve for shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111486248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231774A (en) * | 2023-11-07 | 2023-12-15 | 成都成高阀门股份有限公司 | Metal seal ball valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752178A (en) * | 1972-05-15 | 1973-08-14 | M & J Valve Co | Valve construction |
| CN203718093U (en) * | 2014-02-28 | 2014-07-16 | 陕西航天泵阀科技集团有限公司 | Special hard sealing spherical valve for large-diameter coal slurry transportation |
| CN204239784U (en) * | 2014-10-08 | 2015-04-01 | 浙江天信仪表科技有限公司 | A kind of emery wheel modulating valve with emery wheel lubricating structure |
| JP2015113946A (en) * | 2013-12-13 | 2015-06-22 | 株式会社キッツ | Ball valve with slurry discharging function and method for discharging slurry from valve cavity |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
| CN207178761U (en) * | 2017-08-30 | 2018-04-03 | 自贡自高阀门有限公司 | A kind of valve base sealing structure of water-carriage system ball-valve dedicated |
| CN207213233U (en) * | 2017-09-14 | 2018-04-10 | 四川凯茨阀门制造有限公司 | A kind of multi-sealed valve seat of ball valve |
| CN110030397A (en) * | 2019-05-07 | 2019-07-19 | 中铁华隧联合重型装备有限公司 | A kind of mud ball valve for shield machine |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3752178A (en) * | 1972-05-15 | 1973-08-14 | M & J Valve Co | Valve construction |
| JP2015113946A (en) * | 2013-12-13 | 2015-06-22 | 株式会社キッツ | Ball valve with slurry discharging function and method for discharging slurry from valve cavity |
| CN203718093U (en) * | 2014-02-28 | 2014-07-16 | 陕西航天泵阀科技集团有限公司 | Special hard sealing spherical valve for large-diameter coal slurry transportation |
| CN204239784U (en) * | 2014-10-08 | 2015-04-01 | 浙江天信仪表科技有限公司 | A kind of emery wheel modulating valve with emery wheel lubricating structure |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
| CN207178761U (en) * | 2017-08-30 | 2018-04-03 | 自贡自高阀门有限公司 | A kind of valve base sealing structure of water-carriage system ball-valve dedicated |
| CN207213233U (en) * | 2017-09-14 | 2018-04-10 | 四川凯茨阀门制造有限公司 | A kind of multi-sealed valve seat of ball valve |
| CN110030397A (en) * | 2019-05-07 | 2019-07-19 | 中铁华隧联合重型装备有限公司 | A kind of mud ball valve for shield machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231774A (en) * | 2023-11-07 | 2023-12-15 | 成都成高阀门股份有限公司 | Metal seal ball valve |
| CN117231774B (en) * | 2023-11-07 | 2024-01-23 | 成都成高阀门股份有限公司 | Metal seal ball valve |
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